Patent Application
20250025979
A tool receiving device has already been proposed for an arrangement of at least one tool means, in particular of at least one tool disc, on a portable machine tool, in particular on an angle grinder, having at least one receiving unit to which the at least one tool means can be fixed, and having at least one retaining unit in particular rotatably supported on the receiving unit for at least axially fixing the receiving unit, in particular the tool means, on an output unit.
The invention relates to a tool receiving device for an arrangement of at least one tool means, in particular of at least one tool disc, on a portable machine tool, in particular on an angle grinder, having at least one receiving unit to which the at least one tool means can be fixed, and having at least one retaining unit in particular rotatably supported on the receiving unit for at least axially fixing the receiving unit, in particular the tool means, on an output unit.
It is proposed that the receiving unit comprises at least one driver element and at least one mounting element, which can be rotatably connected to one another by the retaining unit, wherein the retaining unit comprises at least one retaining element configured to be connected to the output unit by means of a screw.
A “tool receiving device” is understood to be in particular at least one part, preferably a sub-assembly, of a machine tool, which is preferably provided for directly receiving, in particular attaching, a tool means, particularly a tool, to the machine tool. In particular, the tool receiving device is a part of a toolholder for the machine tool, preferably an output gearbox, in particular an output train, of the machine tool having the toolholder, in particular as a combination for the machine tool. In particular, the tool receiving device may also include the entire output gear train, in particular the output train, and/or the entire toolholder. In particular, the tool receiving device may also comprise the entire machine tool, in particular including the tool means. Preferably, the tool receiving device is provided, in particular as a part, preferably as a sub-assembly, of the machine tool for coupling a tool means, in particular tool means, to a motor of the machine tool by means of the output gearbox, in particular the output train. The expression “an object being provided for a specific function” is preferably intended to mean that the object fulfils and/or performs said specific function in at least one application and/or operating state. An “operating state” is preferably to be understood as a state in which the tool receiving device is ready for operation for a turning operation of the tool means and/or a turning operation, and/or is coupled at least to the motor and/or the machine tool, and/or is in a turning operation in which the retaining unit of the tool receiving device, in particular the output train, is set in rotation, preferably by the motor of the machine tool.
Preferably, the tool receiver is provided for an arrangement of at least one tool means, in particular of at least one cutting disc and/or grinding disc, on a portable machine tool, in particular on an angle grinder.
Preferably, the at least one tool means is fixable between the at least one driver element and the at least one mounting element by a twist of the mounting element relative to the driver element. Preferably, the at least one driver element can be connected, in particular is connected, to the machine tool in a fixed manner, preferably at least non-rotationally, in particular non-displaceably along an axis of rotation of the retaining unit, in particular of the tool means and/or the output unit. Preferably, the at least one mounting element is rotatably connected to the machine tool about the axis of rotation, in particular at least by a limited angle, in particular on the driver element. Preferably, the at least one driver element is configured as a hollow cylinder disc. Preferably, the at least one driver element extends materially from an inner driver radius, particularly other than zero, radially up to an outer driver radius, wherein the at least one driver element has a maximum extent, in particular along the axis of rotation, which is preferably shorter than a maximum extent of the at least one driver element perpendicular to the axis of rotation, and wherein the at least one driver element may comprise recesses in particular between the inner driver radius and the outer driver radius, which are at least partially, preferably completely, bounded in a plane perpendicular to the axis of rotation due to the material extents of the at least one driver element.
Preferably, the inner driver radius of the at least one driver element bounds a central recess, preferably symmetrically about the axis of rotation, in particular to a circular shape in a cross section perpendicular to the axis of rotation. Preferably, the at least one driver element comprises at least two, preferably at least three, particularly preferably at least four, protrusion stop elements between the inner driver radius and the outer driver radius. Preferably, the at least two protrusion stop elements extend partially along the axis of rotation. Preferably, the protrusion stop elements are all identical. Preferably, the protrusion stop elements are all disposed equally spaced from the nearest adjacent protrusion stop elements. Preferably, the projection stop elements are disposed together in a rotationally symmetrical manner about the axis of rotation. Preferably, all protrusion stop elements are disposed on a same base side of the at least one driver element. Preferably, a base side of the at least one driver element is a largest outer side, disposed in particular facing hypothetical ends of the axis of rotation. Preferably, the base side of the at least one driver element oriented facing away from the projection stop elements is at least substantially planar in design, in particular planar up to an edge projecting from a plane of the base side along the axis of rotation. Preferably, the at least one mounting element is configured as a hollow cylinder disc. Preferably, the at least one mounting element extends materially from an inner mounting radius, particularly other than zero, radially up to an outer mounting radius, wherein the at least one mounting element has a maximum extent, in particular along the axis of rotation, which is preferably shorter than a maximum extent of the at least one mounting element perpendicular to the axis of rotation, and wherein the at least one mounting element may comprise recesses in particular between the inner mounting radius and the outer mounting radius, which are at least partially, preferably completely, bounded in a plane perpendicular to the axis of rotation due to the material extents of the at least one mounting element. Preferably, the inner retaining radius is the same size as the inner driver radius. Preferably, the at least one driver element and the at least one mounting element are connected to each other by the retaining unit for relative rotation, preferably at least partially, in particular about the axis of rotation. Preferably, the at least one mounting element is configured as a hollow cylinder disc having wing elements. Preferably, the at least one mounting element is configured as a circular and symmetric hollow cylinder disc from the inner mounting radius to an intermediate mounting radius and as wing elements adjacent to the circular and symmetric hollow cylinder disc between the intermediate mounting radius and the outer mounting radius. Preferably, the wing elements define the outer mounting radius for the mounting element. Preferably, the outer driver radius is configured to be greater than the outer mounting radius, particularly by at least 10%, preferably at least 15%, particularly preferably at least 20%, and more particularly preferably at least 25% of the outer mounting radius. Preferably, the at least one mounting element is formed in part of at least two, preferably at least three, particularly preferably of at least four, and more particularly preferably at least six wing elements. Preferably, the at least two wing elements form protrusions in the radial direction with respect to the axis of rotation. Preferably, when viewed along the axis of rotation, the at least two wing elements have a boot shape, particularly without a heel. Preferably, the at least one mounting element is configured as a star knob. Preferably, the at least one mounting element is made of the same material as the at least one driver element. Preferably, the at least one mounting element is made of a metal material. Preferably, the at least one driver element is made of a metal material. Preferably, the at least one mounting element and the at least one driver element are configured to clamp the at least one tool means by way of an axial displacement of the at least one mounting element with respect to the at least one driver element directed particularly along the axis of rotation, preferably for fixing the tool means to the tool receiving device, in particular to the machine tool. Preferably, the at least one mounting element is displaceably supported relative to the driver element at a maximum of 1.4 mm, in particular a maximum of 0.8 mm, or a maximum of 0.5 mm, or a maximum of 0.3 mm, and/or a maximum of 0.12 mm, in particular along the axis of rotation. Preferably, the wing elements of the at least one retaining element and the protrusion stop elements of the at least one driver element are configured to clamp the at least one tool means, preferably to fix the tool means to the tool receiving device, in particular to the machine tool. Preferably, the wing elements of the at least one mounting element and the projection stop elements of the at least one driver element each have at least substantially equal clamping surfaces, which are configured to clamp the at least one tool means in a plane, preferably for fixing the tool means to the tool receiving device, in particular to the machine tool. Preferably, the clamping surfaces are configured as surfaces of the at least one mounting element and the at least one driver element, which have a surface normal aligned parallel to the axis of rotation, in particular to align the at least one tool means having a diameter of the at least one tool means perpendicular to the axis of rotation, in particular free of any imbalance with respect to rotation about the axis of rotation. Preferably, the at least one retaining element is made of a metal material. Preferably, the at least one retaining element is made of the same material as the at least one driver element. Preferably, the at least one retaining element is configured as a clamping screw. Preferably, the retaining element is configured to fix the tool means to the receiving unit axially, in particular with respect to the axis of rotation, by means of the mounting element, in particular to the tool receiving device, in particular to the machine tool. Preferably, the retaining element is configured to fix the at least one mounting element to the receiving unit, in particular to the tool receiving device, in particular to the machine tool axially, in particular with respect to the axis of rotation. Preferably, the at least one retaining element is configured as a preferably elongated cylinder element. Preferably, the at least one retaining element is configured as a preferably elongate screw cylinder element. Alternatively, the at least one retaining element may be configured as a bolt element or a pin element. Preferably, the at least one retaining element comprises a longitudinal axis aligned at least substantially parallel to the axis of rotation. The term “longitudinal axis” of an object is in particular intended to mean an axis which extends parallel to a longest edge of a smallest geometric cuboid which just completely encloses the object and preferably extends through a geometric center of the object, in particular the cuboid. The term “substantially parallel” is in particular intended here to be understood to mean an orientation of a direction relative to a reference direction, in particular in a plane, wherein the direction has a deviation from the reference direction of in particular less than 8°, advantageously less than 5°, and in particular advantageously less than 2°. Preferably, the at least one retaining element comprises a thread. Preferably, the thread on the retaining element is disposed in a half region, in particular an end region, of a longitudinal extent of the retaining element. In particular, a “longitudinal extent” is to be understood to mean an extent of an object along a longitudinal axis of the object. A “half region” of an extent of an object is preferably to be understood as a region of the object extending from one end of the corresponding extent of the object to a maximum of 50%, preferably a maximum of 45%, of the extent of the object. An “end region” of an extent of an object is preferably to be understood as a region of the object extending from one end of the corresponding extent of the object to a maximum of 30%, preferably a maximum of 20%, of the extent of the object. Preferably, the thread on the retaining element is disposed in a half region, in particular the end region, of a longitudinal extent of the retaining element facing toward the output unit, in particular the machine tool. Preferably, the at least one retaining element has an outer contour at least substantially T-shaped in a cross-section along the axis of rotation through the axis of rotation, wherein a T cross-beam in particular has unequal extents away from a longitudinal beam of the T. Preferably, the at least one retaining element has an outer contour at least substantially L-shaped in a cross-section along the axis of rotation through the axis of rotation, wherein an L cross-beam in particular has an extent beyond a longitudinal beam of the L, wherein the extent of the L cross-beam beyond the longitudinal beam of the L is in particular a maximum of 25%, preferably a maximum of 10%, of an extent of the L cross-beam. Preferably, the at least one retaining element is rotatably mounted to the receiving unit opposite the at least one driver element. Preferably, the at least one retaining element is partially rotatably supported, in particular at certain rotary angles, against the at least one retaining element on the receiving unit. Preferably, the at least one retaining element is captively connected to the output unit. Preferably, the receiving unit is captively connected to the output unit by the at least one retaining element. In particular, it should be understood that when two objects are “captively” connected to one another, separation of the objects would lead to destruction of at least one of the objects, in particular with respect to a particular intended use. Preferably, the at least one retaining element is configured as a screw connection to the output unit by the thread. Preferably, the screw connection between the at least one retaining element and the output unit is configured to enable a controllable, reduced axial displacement of the at least one retaining element relative to the output unit, in particular by rotating the at least one retaining element, preferably measured by an amount rotated at an outer retaining radius of the at least one retaining element, by at least a factor of ten, preferably by at least a factor of fifty, particularly preferably by at least a factor of one hundred, and more particularly preferably by at least a factor of two hundred. Preferably, an axial displacement of the at least one retaining element is configured to be limited by a rotation of the at least one retaining element about the axis of rotation. Preferably, the at least one retaining element is axially displaceably connected to the output unit by the screw connection by a maximum of 1.7 mm, preferably a maximum of 1.65 mm, preferably a maximum of a 1.6 mm. Preferably, the at least one retaining element is connected to the output unit by the screw connection by a maximum of 1.5 mm, preferably by a maximum of 0.33 mm, particularly preferably by a maximum of 1.45 mm, and more particularly preferably by a maximum of 1.4 mm, in particular by a maximum of 1.35 mm, in an axially displaceable manner. Preferably, the at least one retaining element is axially displaceably connected to the output unit by the screw connection by at least 0.9 mm, preferably by at least 1.0 mm, particularly preferably by at least 1.1 mm, and more particularly preferably by at least 1.2 mm, in particular by at least 1.3 mm. Preferably, the receiving unit comprises at least one spring element, which is preferably configured as a spiral spring element. Preferably, the at least one spring element is disposed between the at least one driver element and the at least one retaining element. Preferably, the at least one spring element is configured to apply a force to the at least one mounting element in the direction towards the at least one driver element. Preferably, the at least one spring element is disposed, in particular centered, about the axis of rotation. Preferably, the at least one retaining element is not removable from the output unit by rotation about the axis of rotation, in particular by the screw connection. For example, the at least one retaining element is axially displaceably connected to the output unit by rotating the at least one retaining element by 58° by a maximum of 0.22 mm, preferably by a maximum of 0.20 mm, particularly preferably by a maximum of 0.18 mm, and more particularly preferably by a maximum of 0.17 mm. For example, the at least one retaining element is axially displaceably connected to the output unit by rotating the at least one retaining element by 504° by a maximum of 1.7 mm, preferably by a maximum of 1.6 mm, particularly preferably by a maximum of 1.5 mm, and more particularly preferably by a maximum of 1.4 mm. Preferably, the at least one retaining element comprises an axial stop surface for limiting axial displacement in the direction towards the output unit, in particular the machine tool. Preferably, the axial stop surface is disposed in a half region, in particular the end region, of a longitudinal extent of the retaining element, in particular a half region, particularly an end region, facing away from the output unit, in particular the machine tool. The at least one retaining element may have a tip, in particular a tapered tip, in the half region, particularly the end region, of a longitudinal extent of the retaining element facing toward the output unit, in particular the machine tool, preferably on the end facing the output unit, in particular the machine tool. Preferably, the particularly tapered tip has a maximum tip diameter of less than a maximum thread diameter of the at least one retaining element, in particular a diameter of the at least one retaining element at the thread, by at least 10%, preferably at least 20%. Preferably, the particularly tapered tip has a maximum tip diameter of less than a smallest outer diameter of the at least one retaining element between the thread and the actuating element by at least 10%, preferably at least 20%. Preferably, the particularly tapered tip has a maximum tip diameter of less than double the inner driver radius and/or double the inner mounting radius by at least 10%, preferably at least 20%. Preferably, the particularly tapered tip has a maximum extent along the axis of rotation of less than, in particular at most half as great as, the maximum tip diameter of the particularly tapered tip. Preferably, the at least one retaining element has a taper, in particular with respect to a diameter of the at least one retaining element, in the half region, particularly the end region, of the longitudinal extent of the retaining element facing toward the output unit, in particular the machine tool. Preferably, the taper is disposed directly adjacent to the thread. Preferably, the taper is disposed at a geometrical center of the at least one retaining element, in particular with respect to a longitudinal extent of the at least one retaining element. Preferably, the taper is disposed between the thread and the geometrical center of the at least one retaining element, in particular with respect to a longitudinal extent of the at least one retaining element.
An advantageous, compact tool receiving device can be achieved by the embodiment of the tool receiving device according to the invention. In particular, the advantageously simple tool receiving function, in particular an X-lock principle, in particular a tool-free quick-release system, preferably for angle grinders, can be advantageously compactly integrated in machine tools. In particular, an advantageously small design height, in particular less than 45 mm as measured along the axis of rotation can be achieved. In particular, an advantageously smaller construction diameter, in particular less than 20 mm perpendicular to the axis of rotation, can be achieved. A tool receiving device advantageously suitable for flat angle grinders can be achieved. An advantageously cost-effective tool receiving device, in particular using the X-lock principle, can be achieved. In particular, an advantageously cost-effective production of a tool receiving device, in particular using the X-lock principle, can be achieved. An advantageously straightforward tool receiving device, in particular using the X-lock principle, can be achieved. A tool receiving device having an advantageously low number of components, in particular using the X-lock principle, can be achieved. An advantageously positive-locking tool means receiver can be achieved. In particular, it can be achieved that the tool means cannot wear down during a braking operation, in particular without an additional wear prevention.
Furthermore, it is proposed that the tool receiving device comprises the output unit configured to be connected to the machine tool and which is captively connected to the receiving unit and to the retaining unit. Preferably, the tool receiving device is intended for use on the machine tool. Preferably, the tool receiving device is provided to be captively connected to the machine tool, in particular at least partially integrated into the machine tool. Preferably, the receiving unit is provided for an arrangement at least mostly outside the machine tool, in particular outside a housing of the machine tool. Preferably, the receiving unit is provided to clamp the at least one tool means outside of the machine tool, preferably completely outside of the housing of the machine tool, preferably by rotating components of the receiving unit against each other. Preferably, the receiving unit is provided for an arrangement at least mostly outside of a smallest imaginary cuboid about the machine tool. Preferably, the output unit is formed at least mostly, in particular entirely, from at least one metal material. Preferably, the at least one output unit has a symmetrical outer contour in at least one cross section along the axis of rotation through the axis of rotation. Preferably, the output unit has an output coupling opening. Preferably, the output coupling opening is configured to at least partially receive the at least one retaining element. Preferably, the output coupling opening is configured as a connection, in particular a screw connection, with the at least one retaining element. Preferably, the output unit has a longitudinal axis that is oriented parallel to the axis of rotation, in particular which defines the axis of rotation. Preferably, the longitudinal axis of the output unit is an axis of symmetry of the output unit about which the output unit, in particular the outer contour of the output unit, is configured rotationally symmetrically. Preferably, the output unit is configured to be captively connected to the machine tool. Preferably, the output unit comprises a tool end configured to be connected to the machine tool. Preferably, the tool end is one end of an extent of the output unit along the longitudinal axis of the output unit, which is disposed on a side facing away from the output coupling opening. Preferably, the output unit is configured to be disposed at least substantially entirely inside of the machine tool, in particular inside of the housing of the machine tool, preferably in the smallest imaginary cuboid around the machine tool. Preferably, the output unit is configured to be disposed on the machine tool with the output coupling opening facing outward, particularly with respect to the housing of the machine tool. Preferably, the output unit is configured to be coupled to the motor of the machine tool, in particular to transfer a torque from the motor to the tool means. Preferably, the at least one retaining element comprises at least one groove, which preferably extends circumferentially at least once entirely around the at least one retaining element. Preferably, the output unit comprises an internal thread corresponding to the thread of the at least one retaining element as a screw connection to the at least one retaining element. Preferably, the internal thread is disposed in the output coupling opening. An advantageous capsule unit, in particular sales unit, can be achieved from the receiving unit, the retaining unit, and the output unit. In particular, advantageously, and preferably as standard, machine tools may be designed as a combination having the capsule unit. Preferably, the depth of the output coupling opening bounds an axial mobility, particularly displaceability, preferably relative to the axis of rotation, of the at least one retaining element in a direction toward the output unit. Preferably, the tool receiving device, in particular the output unit, the receiving unit, and the retaining unit together in a connected state, has a maximum extent along the axis of rotation, which is a maximum of 50 mm, in particular a maximum of 45 mm, preferably a maximum of 42 mm, and in more particularly preferably a maximum of 40 mm. An advantageous transfer of the X-lock principle to any arbitrary machine tool may be achieved.
It is further proposed that the output unit be captively connected to the receiving unit and to the retaining unit by at least one connecting element different from the at least one driver element. Preferably, the output unit comprises at least one connecting element, in particular at least one connecting ring. Preferably, the at least one connecting element, in particular the at least one connecting ring, is disposed at least partially in the at least one groove of the at least one retaining element. Preferably, the at least one connecting element extends in the circumferential direction, in particular with respect to the axis of rotation, once completely around the axis of rotation, in particular around the at least one retaining element. Preferably, the at least one connecting element has a maximum extent along the axis of rotation that is shorter than a maximum extent to which the at least one groove is limited along the axis of rotation. Preferably, the at least one connecting element is connected to the output unit in a fixed manner, in particular with respect to the output unit. The output unit may be configured entirely as an output shaft, which is in particular configured for rotatably supporting on the machine tool, preferably completely rotatably. The output unit may have at least two parts, of which at least one part is configured to be rotatably supported on the machine tool and at least one part is configured to be rigidly connected to the machine tool. The at least one connecting element may be fixedly connected to at least one part of the output unit, in particular a part configured to be fixedly connected to the machine tool. Alternatively, the at least one connecting element may be formed as part of the at least one driver element. In particular, the at least one connecting element may be fixedly connected to the at least one driver element. In particular, the at least one connecting element may be formed integrally with the at least one driver element. “Integrally” is in particular intended to be understood to mean formed in one piece, wherein the one piece is preferably produced from a single blank, a mass, and/or a casting, particularly preferably in an injection molding process, in particular a single and/or multi-component injection molding process. Alternatively, the at least one connecting element may be formed as part of the output unit, for example the part of the output unit, which is configured to be fixedly connected to the machine tool. In particular, the at least one connecting element may be fixedly connected to the output unit, for example the part of the output unit, which is configured to be fixedly connected to the machine tool. In particular, the at least one connecting element may be formed integrally with the output unit, for example the part of the output unit, which is configured to be fixedly connected to the machine tool. Preferably, the at least one connecting element, in particular by means of the at least one groove of the at least one retaining element, bounds an axial mobility, preferably with respect to the axis of rotation, in particular displaceability, of the at least one retaining element in a direction away from the output unit. An advantageously limited axially displaceable captive connection of the receiving unit and/or the retaining unit to the output unit can be achieved.
Furthermore, it is proposed that the output unit is formed integrally with the at least one driver element. Preferably, the part, which in particular is configured to be a rigid connection to the machine tool, is at least partially integral with the at least one driver element. Alternatively, the at least one driver element may be bolted, riveted, welded, glued, and/or latched to the output unit, in particular to the part of the output unit configured to be fixedly connected to the machine tool, as a preferably captive connection of the at least one driver element to the output unit. A particularly advantageously compact tool receiving device can be provided.
It is further proposed that the retaining unit comprises at least one actuating element pivotally connected to the at least one retaining element opposite the retaining element. Preferably, the at least one actuating element is configured to form the at least one retaining element to be rotatable manually, in particular without tools. Preferably, the at least one actuating element is connected to the at least one retaining element pivotably relative to the at least one retaining element about a pivot axis aligned at least substantially perpendicular to the axis of rotation. In this context, the expression “substantially perpendicular” is in particular intended to mean an orientation of a direction relative to a reference direction, whereby, in particular viewed in a projection plane, the direction and the reference direction enclose an angle of 90° and the angle has a maximum deviation of in particular less than 8°, advantageously less than 5° and particularly advantageously less than 2°. Preferably, the at least one actuating element is configured to be pivotable relative to the at least one retaining element by a maximum of 110°, preferably a maximum of 100°, and particularly preferably a maximum of 90°. Preferably, the at least one actuating element is configured as a semicircular arc element. Preferably, the at least one actuating element defines a maximum diameter of the retaining unit about the axis of rotation. A advantageously straightforward change of the at least one tool means can be achieved. In particular, an advantageously quick change of the at least one tool means can be achieved. An advantageous transfer of force from one hand to the tool receiving device for clamping tool means can be achieved.
Furthermore, it is proposed that the at least one retaining element forms a rotating driver surface for the at least one mounting element for rotating the mounting element when the retaining element is rotated. Preferably, the at least one retaining element and the at least one mounting element lie in a half region, particularly in an end region, of the longitudinal extent of the retaining element, preferably in a half region, particularly the end region, facing away from the output unit directly adjacent to one another to form a frictional connection to the rotary driver surface. Preferably, the rotary driver surface is limited to an at least substantially mushroom-shaped outer contour, in particular at least in a cross section perpendicular to the axis of rotation. The term “substantially fungal” is intended to comprise one of almost two semi-ellipses, in particular with different sizes, and/or semi-circles, especially with different radii, a built-up shape wherein the semicircles are particularly adjacent to a respective rectilinear outer contour, preferably in the center, wherein, in particular, the semi-ellipse and/or the semi-circle having the smaller radius, the smaller size in particular, may be replaced by a rectangle. The rotary driver surface of the at least one retaining element may comprise a structuring, for example a knurling. A rotary driver surface of the at least one mounting element facing away from the output unit may comprise a structuring, for example a knurling. Preferably, the rotary driver surface is an outer surface of the at least one retaining element aligned perpendicular to the axis of rotation. Preferably, the rotary driver surface of the at least one retaining element is aligned perpendicular to the axis of rotation. Preferably, the rotary driver surface of the at least one retaining element is at least partially configured, in particular disposed, to directly contact the mounting element. The at least one rotary driver surface may be specially hardened, in particular coated. An advantageous transfer of force from a manual rotary motion to an axial motion of the mounting element for clamping the tool means can be achieved.
It is further proposed that the at least one retaining element and the at least one actuating element be pivotally connected to each other by a pivot axis, in particular the pivot axis already mentioned, which is disposed outside of an axis of rotation of the retaining element. Preferably, the at least one actuating element is pivotally connected to the at least one retaining element by at least one bolt element, in particular at least one pin element or at least one dowel element. Preferably, the at least one actuating element is connected to the at least one retaining element at ends along the longitudinal extent of the at least one actuating element. The pivot axis is preferably aligned perpendicular to the axis of rotation. Preferably, the pivot axis and the axis of rotation are disposed skew to each other, in particular non-parallel and free of an intersection point with each other. An advantageous folding caused by a rotary motion of the actuating element can be achieved, in particular for contacting the mounting element.
Furthermore, it is proposed that the at least one driver element forms at least two stops for the at least one mounting element, limiting a rotatability of the retaining element relative to the driver element to a maximum angle of 45°, preferably a maximum of 42°. Preferably, the projection stop elements of the at least one driver element form the at least two stops for the at least one retaining element, which limit a rotatability of the mounting element relative to the driver element to a maximum angle of 45°, preferably a maximum of 42°. Preferably, respective front faces and rear faces, relative to the circumferential direction about the axis of rotation, of the projection stop elements of the at least one driver element form the at least two stops for the at least one mounting element, which limit a rotatability of the mounting element relative to the driver element to a maximum angle of 45°, preferably a maximum 42°. Preferably, the projection stop elements have a plateau surface having surface normal parallel to the axis of rotation. Preferably, respective front faces of the projection stop elements of the at least one driver element, facing toward the plateau surfaces in relation to the circumferential direction about the axis of rotation, form the at least two stops for the at least one mounting element, which limit a rotatability of the mounting element counterclockwise relative to the driver element to an angle of a maximum of 45°, preferably a maximum of 42°. Preferably, respective rear faces of the projection stop elements of the at least one driver element facing away from plateau surface relative to the circumferential direction about the axis of rotation form the at least two stops for the at least one mounting element, which limit a rotatability of the mounting element clockwise relative to the driver element to an angle of a maximum of 45°, preferably a maximum of 42°. The at least one driver element may alternatively form at least two stops for the at least one mounting element, which limit a rotatability of the mounting element relative to the driver element to a maximum angle of 40°, preferably a maximum of 35°. Preferably, the at least one driver element forms at least two intermediate spaces, in particular in the circumferential direction, between at least two stops for the at least one mounting element, which permit a rotatability of the mounting element with respect to the driver element by an angle of at least 25°, preferably at least 30°. Preferably, the rotatability of the mounting element counterclockwise relative to the driver element is limited to a rotation of the wing elements, each from an intermediate space between at least two projection stop elements, in particular in the circumferential direction, over the plateau surfaces. Preferably, the rotatability of the mounting element in the clockwise direction relative to the driver element is limited to a rotation of the wing elements, respectively, from above the plateau surfaces into an intermediate space between two projection stop elements, in particular in the circumferential direction, in particular entirely adjacent the plateau surfaces. An advantageous, quick clamping of a tool means on the receiving unit can be achieved, in particular by slightly rotating the mounting element.
It is further proposed that a rotatability of the at least one retaining element is limited to an angle of a maximum of 520°, preferably a maximum of 504°. Preferably, the rotatability of the at least one retaining element is limited to a maximum angle of 520°, preferably 504°, by an axial displaceability of the at least one retaining element. Preferably, the rotatability of the at least one retaining element is limited in the clockwise direction by axial displaceability towards the output unit of the at least one retaining element by the output unit and by the groove in cooperation with the connecting element, in particular to an angle of a maximum of 520°, preferably a maximum of 504°. Preferably, the rotatability of the at least one retaining element is limited in the counterclockwise direction by an axial displaceability of the at least one retaining element away from the output unit by the groove in cooperation with the connecting element, in particular to an angle of a maximum of 520°, preferably a maximum of 504°. Alternatively, the rotatability of the at least one retaining element may be limited to a maximum angle of 300°, preferably a maximum of 150°. Preferably, the rotatability of the at least one retaining element is limited to an angle that is at least as great, preferably at least twice as great as a maximum angle of a rotatability of the at least one mounting element relative to the at least one driver element. Preferably, the rotatability of the at least one retaining element is limited to an angle, which is at least 42°, preferably at least 45°, particularly at least 85°, particularly preferably at least 90°. Advantageously fast, manually achievable fixation of the tool means to the machine tool can be achieved. Tool means having different thicknesses can advantageously be clamped.
Furthermore, it is proposed that the retaining unit forms a screw head end having a maximum diameter about an axis of rotation of the retaining element, which is less than a maximum diameter of the at least one mounting element about the axis of rotation. Preferably, the at least one actuating element and the at least one retaining element at an end of the retaining unit facing away from the output unit form a screw head end having an at least substantially circular outer contour in a cross section perpendicular to the axis of rotation, in particular at least in a non-pivoted state of the at least one actuating element, in particular in a state in which the actuating element lies flat against the retaining element. Preferably, the screw head end has a maximum diameter about an axis of rotation of the retaining element, which is greater than double the intermediate mounting radius, in particular of the at least one mounting element about the axis of rotation. An advantageous retaining of the receiving unit to the output unit can be achieved. In particular, an advantageously secure connection of the tool means to the machine tool, in particular to the tool receiving device, can be achieved.
It is further proposed that the at least one retaining element comprises a thread having a thread pitch of at least 0.6 mm. Preferably, the thread of the at least one retaining element has a thread pitch of between 0.6 mm and 2 mm. Preferably, the thread of the at least one retaining element has a thread pitch of at least 0.7 mm, in particular of at least 0.8 mm, preferably of at least 0.9 mm, particularly preferably of at least 1.1 mm, and more particularly preferably of at least 1.0 mm. Preferably, the thread of the at least one retaining element has a thread pitch of a maximum of 2.0 mm, preferably a maximum of 1.75 mm, particularly preferably a maximum of 1.5 mm, and more particularly preferably a maximum of 1.25 mm. An advantageous limitation of an axial displacement of the retaining element when clamping tool means can be achieved. In particular, a screw connection can be advantageously used to guide a transfer of force by a user to a clamping of the tool means and to transfer said force gradually and evenly to the tool means.
Furthermore, it is proposed that the at least one retaining element comprises a thread having a maximum thread diameter of at least 5.8 mm. Preferably, the thread has a maximum thread diameter of between 5.8 mm and 16 mm. Preferably, the thread has a maximum thread diameter of at least 6 mm, in particular of at least 7 mm, preferably of at least 8 mm, particularly preferably of at least 9 mm, and more particularly preferably of at least 10 mm. Preferably, the thread has a maximum thread diameter of a maximum of 15 mm, particularly a maximum of 14 mm, preferably a maximum of 13 mm, particularly preferably a maximum of 12 mm, and more particularly preferably a maximum of 11 mm. An advantageously great amount of force can be achieved when rotating the retaining element to advantageously securely clamp the at least one tool means.
Further, it is proposed that the at least one actuating element is at least partially made of plastic. In particular, the at least one plastic actuating element may be integrally formed with the at least one retaining element. In particular, the at least one retaining element may be at least partially made of plastic, in particular at the screw head end. In particular, the at least one retaining element can be made of plastic in a half region, in particular the end region, of a longitudinal extent of the retaining element, in particular a half region, in particular the end region, facing away from the output unit, in particular the machine tool, and in particular integrally formed with the actuating element. In particular, the actuating element made of plastic is fixedly connected to the at least one retaining element, in particular relative to the at least one retaining element. An actuating element advantageously insensitive to temperature may be achieved. In particular, pivoting of the actuating element may be avoided when releasing and clamping tool means.
Furthermore, a machine tool having a tool receiver according to the invention is proposed. Preferably, the machine tool is configured as an angle grinder, cutter, hand circular saw, polishing machine, or the like. Preferably, the machine tool comprises the housing.
Preferably, the machine tool comprises a guard for tool means, which is preferably to be considered an optional additional component separate from the housing. Preferably, the guard is configured to partially enclose the at least one tool means on the machine tool, in a state coupled to the machine tool. Preferably, the machine tool includes an output receiving opening for receiving the output unit. Preferably, the output receiving opening is configured to connect to the output unit. Advantageous provision of a combination of X-Lock toolholder with output train may be achieved and may be advantageously integrated in a variety of machine tools. A provision of X-lock toolholders for further processing, in particular installing, integrating, and/or installing in machine tools, may be achieved by a variety of manufacturers of machine tools. In particular, an X-lock tool receiving principle may be advantageously sold to machine tool manufacturers.
Moreover, a machine tool system having a machine tool is proposed, having at least one tool means and having a tool receiving device according to the present invention.
It is proposed that the retaining unit forms a screw head end having a maximum diameter about an axis of rotation of the retaining element of less than a minimum diameter of a connection opening of the at least one tool means about the axis of rotation.
Furthermore, a tool means for a machine tool system according to the invention is proposed. Preferably, the tool means comprises the connection opening having a minimum diameter of greater than a maximum diameter of the screw head end of the retaining unit. Preferably, the connection opening is configured as a circular opening, in particular a fully circular opening within a radius, having wing openings, in particular openings disposed only in segments in the peripheral direction and extending radially away from the maximum radius of the circular opening. Preferably, the connection opening is limited to an outer contour minimally larger at the wing openings than a largest outer contour of the at least one retaining element, in particular in the cross section perpendicular to the axis of rotation, and is minimally larger at the annular opening than a largest outer contour of the retaining unit, in particular in the cross section perpendicular to the axis of rotation. An advantageous, cost-effective retaining of the at least one tool means in the axial direction away from the output unit can be achieved by the retaining unit.
The tool receiving device according to the invention, the machine tool according to the invention, the machine tool system according to the invention, and/or the tool means according to the invention and/or the method according to the invention shall/should not be limited here to the application and embodiment described above. In particular, the tool receiving device according to the invention, the machine tool according to the invention, the machine tool system, and/or the tool means according to the invention may have a number of individual elements, components, and units, as well as process steps, that deviates from a number of individual elements, components, and units, as well as method steps, described herein. Moreover, regarding the ranges of values indicated in this disclosure, values lying within the limits specified hereinabove are also intended to be considered as disclosed and usable as desired.
Further advantages follow from the description of the drawings hereinafter. The drawings illustrate two exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. The person skilled in the art will appropriately also consider the features individually and combine them into additional advantageous combinations.
The figures show:
The machine tool 500a is implemented as an angle grinder. The machine tool 500a comprises a housing 502a . . . . The machine tool system 700a comprises a guard 702a for tool means 400a, which is configured as an optional add-on part for the machine tool 500a separate from the housing 502a. The guard 702a is configured to partially enclose the tool means 400a on the machine tool 500a, particularly in a state of the guard 702a coupled to the machine tool 500a. The machine tool 500a comprises an output receiving opening 506a for receiving an output unit 16a. The output receiving opening 506a is configured to connect to the output unit 16a. The machine tool 500a has a longitudinal axis 504a.
The tool receptacle 10a is configured as an arrangement of a tool means 400a, in particular a tool disc, for example a cutting disc, on the portable machine tool 500a, in particular on the angular grinder.
The tool receiving device 10a comprises a receiving unit 12a. The tool receiving device 10a comprises a retaining unit 14a. The tool means 400a can be fixed to the receiving unit 12a. The retaining unit 14a is rotatably supported on the receiving unit 12a. The retaining unit 14a is configured to axially fix the receiving unit 12a and the tool means 400a to the output unit 16a.
The tool receiving device 10a is partially a sub-assembly of an output gear box 508a of the machine tool 500a, and partially a tool receiving device of the machine tool 500a, in particular as a combined unit for the machine tool 500a. The tool receiving device 10a is provided for use on the machine tool 500a. The tool receiving device 10a is provided to be captively connected to the machine tool 500a, in particular to be partially integrated into the machine tool 500a. The tool receiving device 10a is captively connected to machine tool 500a, in particular partially integrated in the machine tool 500a.
The tool receiving device 10a is provided, particularly as a sub-assembly of the machine tool 500a, for coupling the tool means 400a, particularly a plurality of different tool means, in particular tool means 400a, to a motor (not shown) of the machine tool 500a via the output gear box 508a. The tool receiving device 10a is provided for disposing tool means 400a on the portable machine tool 500a.
The receiving unit 12a comprises a driver element 18a (cf.
The receiving unit 12a is provided for an arrangement mostly outside of the machine tool 500a, particularly outside of the housing 502a of the machine tool 500a. The receiving unit 12a is provided to clamp the tool means 400a outside of the machine tool 500a, particularly by rotating components of the receiving unit 12a relative to each other. The receptacle 12a is provided for an arrangement at least mostly outside of a smallest imaginary cuboid 510a about the machine tool 500a.
The tool means 400a can be fixed between the driver element 18a and the retaining element 20a by rotating the mounting element 20a relative to the driver element 18a.
The driver element 18a can be connected, in particular is connected, to the tool machine 500a, in particular in a non-displaceable manner along an axis of rotation 24a of the retaining unit 14a, in particular of the tool means 400a and/or the output unit 16a.
The retaining element 20a is rotatably connected to the machine tool 500a about the axis of rotation 24a, in particular by a limited angle, in particular on the driver element 18a. The driver element 18a is implemented as a hollow cylinder disc. The driver element 18a materially extends radially from an inner driver radius 26a, particularly other than zero, to an outer driver radius 28a, wherein the driver element 18a has a maximum extent, in particular along the axis of rotation 24a, which is in particular shorter than a maximum extent of the driver element 18a perpendicular to the axis of rotation 24a, and wherein the driver element 18a comprises recesses in particular between the inner driver radius 26a and the outer driver radius 28a, which are completely bounded in a plane perpendicular to the axis of rotation 24a by the material extents of the driver element 18a.
The driver element 18a mounds a central recess 30a on the inner driver radius 26a, preferably symmetrical about the axis of rotation 24a, in particular to a circular shape in a cross section perpendicular to the axis of rotation 24a (cf.
The protrusion stop elements 32a, 32a′, 32a″, 32a′″ extend partially along the axis of rotation 24a. The protrusion stop elements 32a, 32a′, 32a″, 32a′″ are all identical. The protrusion stop elements 32a, 32a′, 32a″, 32a″ are all equally spaced apart from the nearest adjacent protrusion stop elements 32a, 32a′, 32a″, 32a″. The protrusion stop elements 32a, 32a′, 32a″, 32a′″ are collectively disposed rotationally symmetrically about the axis of rotation 24a.
All protrusion stop elements 32a, 32a′, 32a″, 32a′″ are disposed on a same base side 34a of the driver element 18a. A base side 34a, 34a′ of the driver element 18a is a largest outer side disposed in particular facing hypothetical ends of the axis of rotation 24a. The base side 34a′ of the driver element 18a facing away from the projection stop elements 32a, 32a′, 32a″, 32a″, is at least substantially flat in design, particularly except for a rim 36a projecting along the axis of rotation 24a out of a plane of the base side 34a′. The mounting element 20a is implemented as a hollow cylinder disc. The mounting element 20a extends materially radially from an inner mounting radius 38a, in particular other than zero, to an outer mounting radius 40a, wherein the mounting element 20a has a maximum extent, in particular along the axis of rotation 24a, which is in particular shorter than a maximum extent of the mounting element 20a perpendicular to the axis of rotation 24a, and wherein the mounting element 20a comprises recesses in particular between the inner mounting radius 38a and the outer mounting radius 40a, which are at least partially bounded in a plane perpendicular to the axis of rotation 24a by the material extents of the mounting element 20a.
The inner mounting radius 38a is the same size as the inner driver radius 26a. The driver element 18a and the mounting element 20a are connected to each other by the retaining unit 14a partially rotatably about the axis of rotation 24a.
The mounting element 20a is configured as a hollow cylinder disc having wing elements 42a, 42a′, 42a″, 42a″ (cf.
The mounting element 20a is formed in part by four wing elements 42a, 42a′, 42a″, 42a″. The wing elements 42a, 42a′, 42a″, 42a′″ form protrusions in the radial direction with respect to the axis of rotation 24a. The wing elements 42a, 42a′, 42a″, 42a″″, when viewed along the axis of rotation 24a, have a boot shape, in particular without a heel. The mounting element 20a is configured as a star knob. The mounting element 20a is made of the same material as the driver element 18a. The mounting element 20a is made of a metal material. The driver element 18a is made of a metal material.
The mounting element 20a and the driver element 18a are configured to clamp the tool means 400a by way of an axial displacement, particularly along the axis of rotation 24a, of the mounting element 20a relative to driver element 18a, particularly to fix the tool means 400a to the tool receiving device 10a, particularly to the machine tool 500a. In the present example, the mounting element 20a is supported relative to the driver element 18a axially displaceably by a maximum of 0.12 mm, in particular along the axis of rotation 24a.
The wing elements 42a, 42a′, 42a″, 42a″ of the mounting element 20a and the protrusion stop elements 32a′, 32a″, 32a″, 32a″″ of the driver element 18a are configured to clamp the tool means 400a, in particular to fix the tool means 400a to the tool receiving device 10a, in particular to the machine tool 500a.
The wing elements 42a, 42a′, 42a″, 42a′″ of the mounting element 20a and the projection stop elements 32a, 32a′, 32a″, 32a′″ of the driver element 18a each have approximately equally sized clamping surfaces, which are configured to flatly clamp the tool means 400a, preferably to fix the tool means 400a to the tool holder 10, in particular to the machine tool 500a
The clamping surfaces are configured as surfaces of the mounting element 20a and the driver element 18a, which have a surface normal aligned parallel to the axis of rotation 24a, in particular for aligning the tool means 400a with a diameter of the tool means 400a perpendicular to the axis of rotation 24a, in particular free of any imbalance with respect to rotating about the axis of rotation 24a.
The retaining element 22a is made of a metal material. The retaining element 22a is made of the same material as the driver element 18a and/or the mounting element 20a. The retaining element 22a is configured as a clamping screw.
The retaining element 22a is configured to axially fix the tool means 400a by means of the mounting element 20a to the receiving unit 12a, in particular to the tool receiving device 10a, in particular to the machine tool 500a, in particular with respect to the axis of rotation 24a.
The retaining element 22a is configured to axially fix the mounting element 20a to the receiving unit 12a, in particular to the tool receiving device 10a, in particular to the machine tool 500a, in particular with respect to the axis of rotation 24a. The retaining element 22a is configured as a, preferably elongate, cylindrical element. The retaining element 22a is configured as a, preferably elongate, screw cylinder element. The retaining element 22a has a longitudinal axis 46a aligned parallel to the axis of rotation 24a.
The retaining element 22a has a thread 48a. The thread 48a is disposed on the retaining element 22a in a half region, in particular the end region, of a longitudinal extent of the retaining element 22a. The thread 48a is disposed on the retaining element 22a in a half region, in particular the end region, of a longitudinal extent of the retaining element 22a facing toward the output unit 16a, in particular the machine tool 500a.
The retaining element 22a has an approximately T-shaped outer contour in a cross-section along the axis of rotation 24a through the axis of rotation 24a, wherein a T cross-beam has in particular unequal extents away from a T longitudinal beam. The retaining element 22a has an at least substantially L-shaped outer contour in a cross-section along the axis of rotation 24a through the axis of rotation 24a, wherein an L cross-beam in particular has an extent beyond an L longitudinal beam, wherein in particular the extent of the L-cross-beam beyond the L longitudinal beam is at most 25% of an extent of the L cross-beam.
The retaining element 22a is rotatably supported on the receiving unit 12a relative to the driver element 18a. The retaining element 22a is partially, in particular at certain angles of rotation, rotatably mounted to the receiving unit 12a relative to the mounting element 20a. The retaining element 22a is captively connected to the output unit 16a. The receiving unit 12a is captively connected to the output unit 16a by the retaining element 22a, among other things. The receiving unit 12a is captively connected to the output unit 16a by screw elements, among other things.
The retaining element 22a is implemented by thread 48a as a screw connection to the output unit 16a. The screw connection between the retaining element 22a and the output unit 16a is to enable a controllable axial displacement of the retaining element 22a relative to the output unit 16a, in particular by rotation of the retaining element 22a, in particular measured by a rotational distance at an outer retaining radius 50a of the retaining element 22a, reduced by a factor of at least one hundred. An axial displacement of the retaining element 22a is limited in design by a rotation of the retaining element 22a about the axis of rotation 24a.
In the present example, the retaining element 22a is connected to the output unit 16a by the screw connection axially displaceably by a maximum of 0.31 mm. In the present example, the retaining element 22a is connected to the output unit 16a by the screw connection axially displaceably by at least 0.24 mm.
The receiving unit 12a comprises a spring element 52a configured as a spiral spring element. The spring element 52a is disposed between driver element 18a and mounting element 20a. The spring element 52a is configured to apply a force to the mounting element 20a toward the driver element 18a. The spring element 52a is connected to the mounting element 20a. The spring element 52a is connected to the driver element 18a.
The spring element 52a is disposed about the axis of rotation 24a, in particular centered. The retaining element 22a is not removable from the output unit 16a by rotation about the axis of rotation 24a, in particular by the screw connection. In the present example, the retaining element 22a is connected to the output unit 16a axially displaceably by a maximum of 0.17 mm, by a rotation of the retaining element 22a by 58°.
The retaining element 22a has an axial stop surface 54a to limit axial displacement towards the output unit 16a, in particular the machine tool 500a. The axial stop surface 54a is disposed in a half region, in particular the end region, of a longitudinal extent of the retaining element 22a, in particular a half region, in particular the end region, facing away from the output unit 16a, in particular the machine tool 500a.
The retaining element 22a has a taper 64a, in particular with respect to a diameter of the retaining element 22a, in the half region, in particular the end region, of a longitudinal extent of the retaining element 22a facing toward the output unit 16a, in particular the machine tool 500a. The taper 64a is disposed directly adjacent to the thread 48a, particularly on a side facing toward the mounting element 20a. The taper 64a is disposed at a geometrical center of the retaining element 22a, particularly with respect to a longitudinal extent of the retaining element 22a. The taper 64a is disposed between the thread 48a and the geometrical center of the retaining element 22a, particularly with respect to a longitudinal extent of the retaining element 22a.
The tool receiving device 10a comprises the output unit 16a. The output unit 16a is configured to connect to the machine tool 500a. The output unit 16a is captively connected to the receiving unit 12a and to the retaining unit 14a. The output unit 16a is made at least mostly, in particular entirely of a metal material. The output unit 16a has a symmetrical outer contour in a cross section along the axis of rotation 24a through the axis of rotation 24a. The output unit 16a comprises a tool end 70a configured to connect to the machine tool 500a. The tool end 70a is an end of an extent of the output unit 16a along the longitudinal axis 68a of the output unit 16a, which is disposed on a side facing away from an output coupling opening 66a.
The output unit 16a comprises the output coupling opening 66a. The output coupling opening 66a is configured to at least partially receive the retaining element 22a. The output coupling opening 66a is configured to form a connection, in particular a screw connection, with the retaining element 22a. The output unit 16a has a longitudinal axis 68a oriented parallel to the axis of rotation 24a, in particular defining the axis of rotation 24a.
The output coupling opening 66a has a tip 56a, in particular a tapered tip 56a, at the end of the tool end 70a, particularly in a half region facing the machine tool 500a, particularly the end region, of the longitudinal extent of the output coupling opening 66a. The particularly tapered tip 56a has a maximum tip diameter 58a, which is at least 20% less than a maximum thread diameter 60a, in particular a diameter of the retaining element 22a at the thread 48a of the retaining element 22a. The particularly tapered tip 56a has a maximum tip diameter 58a, which is at least 20% less than a least outer diameter of the retaining element 22a between the thread 48a and an actuating element 62a. The particularly tapered tip 56a has a maximum tip diameter 58a, which is at least 20% less than double the inner driver radius 26a and/or double the inner mounting radius 38a. The particularly tapered tip 56a has a maximum extent along the axis of rotation 24a, which is less than, in particular at most half as great as, the maximum tip diameter 58a of the particularly tapered tip 56a.
The longitudinal axis 68a of the output unit 16a is an axis of symmetry of the output unit 16a about which the output unit 16a, in particular the outer contour of the output unit 16a, is formed rotationally symmetrically. The output unit 16a is configured to captively connect to the machine tool 500a.
The output unit 16a is disposed at least substantially entirely in the machine tool 500a, particularly in the housing 502a of the machine tool 500a, preferably in the smallest imaginary cuboid 510a about the machine tool 500a.
The output unit 16a is configured to be disposed on the machine tool 500a having the output coupling opening 66a facing outward, particularly with respect to the housing 502a of the machine tool 500a. The output unit 16a is configured to couple with the motor of the machine tool 500a, in particular to transfer a torque from the motor to the tool means 400a. The output unit 16a is configured entirely as an output shaft, which is configured in particular to be preferably fully rotatably supported on the machine tool 500a.
The retaining element 22a comprises a groove 72a, which preferably extends circumferentially around the retaining element 22a at least once. The output unit 16a has an internal thread 74a corresponding to the thread 48a of the retaining element 22a for a screw connection with the retaining element 22a. The internal thread 74a is disposed in the output coupling opening 66a. A depth 96a of the output coupling opening 66a limits an axial mobility, particularly displaceability, of the retaining element 22a, preferably relative to the axis of rotation 24a, in a direction towards the output unit 16a.
The tool receiving device 10a, in particular the output unit 16a, the receiving unit 12a, and the retaining unit 14a together have a maximum extent 76a along the axis of rotation 24a, which is a maximum of 45 mm (cf.
The output unit 16a comprises at least one connecting element 78a, in particular the connecting ring. The output unit 16a is captively connected to the receiving unit 12a and to the retaining unit 14a by the connecting element 78a, which is in particular different from the driver element 18a. The connecting element 78a, particularly the connecting ring, is disposed at least partially in the groove 72a of the retaining element 22a, particularly on an inner side of the connecting element 78a relative to the axis of rotation 24a. The connecting element 78a extends circumferentially, particularly with respect to the axis of rotation 24a, once entirely about the axis of rotation 24a, particularly about the retaining element 22a. The coupler 78a has a maximum extent along the axis of rotation 24a, which is shorter than a maximum extent to which the groove 72a is limited along the axis of rotation 24a. The connecting element 78a is non-displaceably connected to the output unit 16a, particularly relative to the output unit 16a. The connecting element 78a is fixedly connected to the driver element 18a. The connecting element 78a limits an axial mobility, in particular displaceability, particularly with respect to the axis of rotation 24a, of the retaining element 22a in a direction away from the output unit 16a, particularly by means of the groove 72a of the retaining element 22a.
The retaining unit 14a comprises the actuating element 62a. The actuating element 62a is pivotally connected to retaining element 22a relative to the retaining element 22a. The actuating element 62a is configured to form the retaining element 22a to be manually rotatable, in particular without any tools. The actuating element 62a is pivotally connected to the retaining element 22a about a pivot axis 80a relative to the retaining element 22a, which is aligned perpendicular to the axis of rotation 24a. The actuating element 62a is configured to be pivotable by a maximum of 100° with respect to the retaining element 22a. The actuating element 62a is configured as a semicircular arc element (cf.
The retaining element 22a and the actuating element 62a are pivotally connected to each other about the pivot axis 80a, which is disposed outside of an axis of rotation 24a of the retaining element 22a. The actuating element 62a is pivotally connected to retaining element 22a by two bolt elements, in particular pin elements or dowel elements. The actuating element 62a is connected to the retaining element 22a at ends along the longitudinal extent of the actuating element 62a. The pivot axis 80a is oriented perpendicular to the axis of rotation 24a. The pivot axis 80a and the axis of rotation 24a are disposed skew to each other, in particular non-parallel and without any intersection point.
The retaining element 22a forms a rotary driving surface 82a for the mounting element 20a to rotate the mounting element 20a upon rotating of the retaining element 22a. The retaining element 22a and the mounting element 20a lie directly adjacent to one another in a half region, in particular in an end region, in particular in a half region facing away from the output unit 16a, in particular the end region, of the longitudinal extent of the retaining element 22a, to form a friction fit at the rotary driving surface 82a. The rotary driving surface 82a is limited to a mushroom-shaped outer contour, in particular a compound shape made of wide stem and a rounded hat shape, in particular at least in a cross section perpendicular to the axis of rotation 24a (cf.
The rotary driving surface 82a is an outer surface of the retaining element 22a oriented perpendicular to the axis of rotation 24a in the direction of the retaining element 20a. The rotary driving surface 82a of the retaining element 22a is oriented perpendicular to the axis of rotation 24a. The rotary driving surface 82a of the retaining element 22a is configured, in particular disposed, to directly contact the mounting element 20a at certain angles of rotation of the retaining element 22a. The rotary driving surface 82a is identical to the axial stop surface 54a of retaining element 22a.
The driver element 18a forms eight stops for the mounting element 20a (cf.
Preferably, respective front faces 84a, 84a′, 84a″, 84a′″ and rear faces 86a, 86a′, 86a″, 86a′″ of the projection stop elements 32a, 32a′, 32a″, 32a′″ of the driver element 18a form the eight stops for the mounting element 20a, in particular limiting a rotatability of the mounting element 20a relative to the driver element 18a to a maximum angle of 42° into the circumferential direction about the axis of rotation 24a.
The protrusion stop elements 32a, 32a′, 32a″, 32a′″ each have a plateau surface 88a, 88a′, 88a″, 88a′″, which have surface normals parallel to the axis of rotation 24a.
Respective front faces 84a, 84a′, 84a″, 84a′″ of the projection stop elements 32a, 32a′, 32a″, 32a′″ of the driver element 18a′ facing plateau surfaces 88a, 88a′, 88a″, 88a′″ relative to the circumferential direction about the axis of rotation 24a form four stops for the retaining element 20a for limiting a rotatability of the mounting element 20a counterclockwise relative to the driver 18a to a maximum angle of 42°.
Respective rear faces 86a, 86a′, 86a″, 86a′″ of the projection stop elements 32a, 32a′, 32a″, 32a′″ of the driver element 18a facing away from the plateau surfaces 88a, 88a′, 88a″, 88a′″ relative to the circumferential direction about the axis of rotation 24a form four stops for the mounting element 20a, limiting a rotatability of the mounting element 20a counterclockwise relative to the driver element 18a to a maximum angle of 42°.
The driver element 18a forms four intermediate spaces 90a, 90a′, 90a″, 90a′″ particularly in the circumferential direction, between eight stops, particularly between the projection stop elements 32a, 32a′, 32a″, 32a′″, for the mounting element 20a, which allow the mounting element 20a to be rotated relative to the driver element 18a by an angle of at least 30°.
The rotatability of the mounting element 20a counterclockwise relative to the driver element 18a is limited to a rotation of the wing elements 42a, 42a′, 42a″, 42a′″ from one intermediate space 90a, 90a′, 90a″, 90a′″ between two protrusion stop elements 32a, 32a′, 32a″, 32a′″, particularly in the circumferential direction, over the plateau surfaces 88a, 88a′, 88a″, 88a′″.
The rotatability of the retaining element 20a clockwise relative to the driver element 18a is limited to a rotation of the wing elements 42a, 42a′, 42a″, 42a′″ from over each of the plateau surfaces 88a, 88a′, 88a″, 88a′″ into the intermediate spaces 90a, 90a′, 90a″, 90a′″ between four protrusion stop elements 32a, 32a′, 32a″, 32a′″, particularly in the circumferential direction, in particular entirely adjacent to the plateau surface 88a, 88a′, 88a″, 88a′″.
The rotatability of the retaining element 22a is limited to a maximum angle of 100°. The rotatability of the retaining element 22a is limited by an axial displaceability of the retaining element 22a to a maximum angle of 100°, in particular in the present example.
The rotatability of the retaining element 22a is limited clockwise by an axial displaceability towards the output unit 16a of the retaining element 22a by the output unit 16a and by the groove 72a interacting with the connecting element 78a, in particular to a maximum angle of 100°.
The rotatability of the retaining element 22a is limited counterclockwise by an axial displaceability away from the output unit 16a of the retaining element 22a by the groove 72a interacting with the connecting element 78a, in particular to a maximum angle of 100°.
The rotatability of the retaining element 22a is limited to an angle which is at least as great, preferably at least twice as great as a maximum angle of a rotatability of the mounting element 20a compared to the at least one driver element 18a.
The rotatability of the retaining element 22a is limited to an angle of at least 85°.
The retaining unit 14a forms a screw head end 92a. The screw head end 92a has a maximum diameter 94a about an axis of rotation 24a of the retaining element 22a, which is less than a maximum diameter of the mounting element 20a, in particular as the double outer mounting radius 40a, about the axis of rotation 24a (cf.
The actuating element 62a and the retaining element 22a form the screw head end 92a on an end of the retaining unit 14a facing away from the output unit 16a having a circular outer contour apart from two smaller gaps in a cross section perpendicular to the axis of rotation 24a, in particular in a non-pivoted state of the actuating element 62a (cf.
The screw head end 92a has a maximum diameter 94a about the axis of rotation 24a of the retaining element 22a, which is greater than double the intermediate mounting radius 44a, in particular of the mounting element 20a about the axis of rotation 24a.
The retaining element 22a comprises a thread 48a, which has a thread pitch of at least 0.6 mm. The thread 48a of the retaining element 22a has a thread pitch of between 0.6 mm and 2 mm. The thread 48a of the retaining element 22a has a thread pitch of 1.0 mm.
The thread 48a has a maximum thread diameter 60a of at least 5.8 mm. The thread 48a has a maximum thread diameter 60a of at least 10 mm.
The screw head end 92a has a maximum diameter 94a about the axis of rotation 24a of the retaining element 22a, which is less than a minimum diameter 402a of a connecting opening 404a of the tool means 400a about the axis of rotation 24a (cf.
The tool means 400a has the connection opening 404a which has a minimum diameter 402a which is greater than a maximum diameter 94a of the screw head end 92a of the retaining unit 14a.
An output unit 16b is formed integrally with a driver element 18b. The tool receiving device 10b, in particular the output unit 16b, a receiving unit 12b and a retaining unit 14b together, in a state connected to each other, have a maximum extent 76b along a axis of rotation 24b of a maximum of 40 mm.
An actuating element 62b is made of plastic. The actuating element 62b is integrally formed with a retaining element 22b. The retaining element 22b is made at least partially of plastic on a screw head end 92b. The actuating element 62b is fixedly connected to the retaining element 22b, in particular relative to the retaining element 22b.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2021 213 514.5 | Nov 2021 | DE | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2022/079868 | 10/26/2022 | WO |
