Patent Application
20190039405
The invention relates to a pen for writing and/or drawing purposes having a shaft and a core which is arranged within the shaft and which is axially adjustable in the longitudinal direction of the shaft between an active position and an inoperative position.
Pens in which the core is adjusted mechanically between an active position and an inoperative position are known in multiple embodiments and are used for example as ballpoint pens. In the case of so-called twist pens or twist ballpoint pens, a rear portion of the shaft is twisted with respect to a front portion in order to axially adjust the core. A further possibility is provided by push-type pens, for example push-type ballpoint pens, which have at their rear end an actuating button or pushbutton by the actuation of which the core is moved between the active position and the inoperative position. Here, the forward travel of the core is achieved, for example, by means of a spindle drive or a thread, with the result that a rotary movement of the shaft or a movement of the actuating button in the longitudinal direction of the shaft is transmitted to the core and the latter is thus axially adjusted. However, such a design is often technically complicated since a high number of additional components is required.
It is therefore the object of the invention to propose a pen for writing and/or drawing purposes in which the core is adjustable in a simple and reliable manner.
The object is achieved by a pen for writing and/or drawing purposes having the features as claimed in claim 1. The pen comprises a shaft and a core which is arranged within the shaft and is axially adjustable in the longitudinal direction of the shaft between an active position and an inoperative position. In the inoperative position, the core is arranged completely within the shaft and, in the active position, the core protrudes with an overhang from a front end of the shaft. The pen further comprises an actuating element which is movable perpendicularly to the longitudinal direction of the shaft between an active position and an inoperative position and which is operatively connected to the core via a connecting element in such a way that, during a movement of the actuating element perpendicularly to the longitudinal direction of the shaft between the inoperative position and the active position, the core is axially adjustable in the longitudinal direction of the shaft.
In other words: the actuating element is—with respect to a horizontally held pen—movable vertically upward and downward, that is to say in the radial direction with respect to a central longitudinal axis of the pen, with the core being movable horizontally forward and backward. The movement of the actuating element and the movement of the core thus occur in directions which extend perpendicularly to one another. The actuating element and the core are thus coupled in movement via the connecting element, with the result that, during an actuation of the actuating element, the core is displaced or adjusted axially, that is to say along or parallel to a central longitudinal axis of the shaft. Here, the actuating element is arranged in a rear portion or end of the shaft, and therefore it is operatively connected to a rear end of the core and displaces said core toward a front end of the shaft for movement into the active position.
The term “active position” is to be understood here as meaning that position of the core or of the actuating element when the pen is being used, that is to say is in the writing position or in a use state, i.e. the core is extended. In the inoperative position of the core or of the actuating element, the pen is situated in the nonuse state, i.e. the core is retracted.
The idea of the present invention thus consists in providing a mechanical pen in which the core is movable from its inoperative position into the active position reliably and repeatedly and in a manner which is simple for a user. In other words: during its actuation, a movement of the actuating element that has occurred perpendicularly to the longitudinal direction is converted into a movement of the core that occurs in the longitudinal direction. The connecting element affords the advantage that the path of the actuating element which the latter covers during a movement from the inoperative position into the active position can be shorter than the movement path of the core in the longitudinal direction that is required to reach the active position of the core. In addition, the movement of the actuating element perpendicularly to the longitudinal direction, by comparison with known pens in which the actuating element is moved just like the core in the longitudinal direction, means that less space is required within the shaft, with the result that the latter can be more compact overall, that is to say for example shorter or, for the same size, a longer core can be used in order to form a longer-life pen.
The connecting element is preferably rotatably mounted on the shaft in a central portion, a first end portion of the connecting element is preferably mounted on the actuating element, and a second end portion of the connecting element is preferably mounted directly or indirectly on the core. The connecting element is thus fastened to the shaft in a positionally fixed manner so as to be rotatable about an axis of rotation extending both perpendicularly to the longitudinal direction of the shaft and perpendicularly to the movement direction of the actuating element, in other words about an axis of rotation extending in the transverse direction. A central portion of the connecting element thus forms a rotation point or fixed point about which the connecting element or both the first and the second end portion of the connecting element can be rotated, with the position of this fixed point with respect to the shaft thus not changing relative to the shaft, that is to say no movement in the longitudinal direction taking place with respect to the shaft. The first and the second end portion of the connecting element are also fastened to the actuating element or to the core in a positionally fixed manner, with the result that the relative position of the first end portion with respect to the actuating element and the relative position of the second end portion with respect to the core likewise do not change during a movement from the inoperative position into the active position, and vice versa. If the actuating element is moved perpendicularly to the longitudinal direction of the shaft, a force is thus exerted on the first end portion of the connecting element. As a result, the first end portion of the connecting element is also moved perpendicularly to the longitudinal direction of the shaft, that is to say carried along by the actuating element, with the result that this brings about a rotation of the connecting element about the fixed point and thus also a movement of the second end portion and the core is moved from the inoperative position into the active position. In other words: the movement of the actuating element perpendicularly to the longitudinal direction of the shaft is converted by the connecting element into a movement of the core in the longitudinal direction of the shaft. The connecting element thus has the function of a lever.
The connecting element is preferably a single connecting element or a connecting element of one-part design which thus comprises only one connecting member which is rotatably mounted on the shaft in a central portion, is mounted on the actuating element by a first end portion, and is mounted on the core directly or indirectly by a second end portion of the connecting element. In order to make possible a reliable rectilinear adjustment of the core, in a further preferred embodiment the connecting element comprises at least two connecting members, that is to say in particular a first connecting member and a second connecting member, which are each connected to one another in an articulated manner. In each case adjacent connecting members are thus each connected to one another so as to be pivotable about a pivot axis in their mutually facing end portions. The pivot axes about which in each case two connecting members, for example the first and the second connecting member, are arranged pivotably with respect to one another likewise extend perpendicularly to the longitudinal direction of the shaft and also perpendicularly to the movement direction of the actuating element. In addition, the pivot axes are displaceable translationally in the longitudinal direction and perpendicularly to the longitudinal direction, with the movement occurring along a curved line which follows the rotation about the axis of rotation of the central portion of one of the connecting members that is fixed on the shaft. Here, a first connecting member which is connected to the actuating element is fixed on the shaft so as to be rotatable about the axis of rotation in a positionally fixed manner. The first end portion of the connecting element that is arranged on the actuating element is thus formed by the first connecting member, and the second end portion which is fixed on the core is formed by the second or, depending on the design form, a third or further connecting member. A plurality of connecting members have the advantage that, with the movement path of the actuating element perpendicularly to the longitudinal direction of the shaft remaining the same, a longer movement path of the core in the longitudinal direction can be achieved.
It would be conceivable for example to arrange a third or further connecting member in the form of a link chain between the actuating element and the core, with in each case adjacent connecting members being connected to one another in an articulated manner, that is to say pivotably about a pivot axis.
Preferably, in the inoperative position, the actuating element protrudes at least partially from a first lateral surface of the shaft and, in the active position, protrudes at least partially from a second lateral surface of the shaft that is opposite to the first. In the inoperative position, the actuating element in particular terminates level with the second lateral surface of the shaft and, in the active position, the actuating element in particular terminates level with the first lateral surface of the shaft. As a result, a disturbing overhang of the actuating element is largely avoided. In order to axially adjust the core, the respectively protruding part of the actuating element can be reached, with the result that the actuating element can be moved by pressing the respectively protruding portion from the active position into the inoperative position, and vice versa.
In a further preferred embodiment, the actuating element has a first longitudinal portion which extends in the longitudinal direction of the shaft and a second longitudinal portion which extends perpendicularly to the longitudinal direction and which is arranged at least partially within the shaft, wherein, in the inoperative position, at least the first longitudinal portion protrudes from the first lateral surface of the shaft and, in the active position, the second longitudinal portion protrudes by way of a free end at least partially from the second lateral surface of the shaft that is opposite to the first. In this case, the first longitudinal portion forms a retaining clip, for example, in order to make it possible to store the pen in the nonuse state in a pen compartment of a briefcase or in a breast pocket, for example. For this purpose, retaining or clamping means for captively inserting the pen can be integrally formed on the free end of the first longitudinal portion. By virtue of the fact that the first longitudinal portion protrudes from the lateral surface of the shaft only when the core is situated in the inoperative position, soiling, for example of the breast pocket or briefcase, is reliably avoided. The second longitudinal portion is at least partially held or guided in a rear region of the shaft and interacts with an inner peripheral surface of the shaft, for example in the sense of a sliding pair.
In a further preferred embodiment, the free end of the second longitudinal portion has a smaller width than an adjoining central portion of the second longitudinal portion, wherein the free end is at least partially arranged within a clearance of the shaft in the inoperative position and/or in the active position. Here, the clearance is formed in a portion of the shaft that adjoins the second lateral surface. Particularly both during the movement of the actuating element perpendicularly to the longitudinal direction of the shaft and in the inoperative position and in the active position, the second longitudinal portion or its free end thus prevents a movement of the actuating element in the longitudinal direction of the shaft, since said second longitudinal portion or its free end is held in the clearance with the formation of a form fit acting in the longitudinal direction.
Furthermore, the actuating element preferably has at least one stop surface which interacts with an inner peripheral surface of the shaft in the active position and/or inoperative position. This stop surface is arranged for example on the free end of the longitudinal portion and interacts with an inner peripheral surface delimiting the clearance of the shaft in order to prevent the movement of the actuating element in the longitudinal direction. In addition, the central portion of the second longitudinal portion that adjoins the free end can form a stop surface which bears against an inner peripheral surface of the shaft in the active position. As a result, it is made clear to the user for example that the active position of the core as end position has been reached, and excessively strong pressing of the actuating element is avoided. A further stop surface is formed for example by a rear end side of the actuating element, i.e. the end side facing the rear end of the shaft, which bears against an inner peripheral surface of the rear end of the shaft and is pressed against it during the movement of the actuating element from the inoperative position into the active position in order for the force resulting from the movement of the actuating element to be completely converted into a rotation of the connecting element. Furthermore, this ensures that the core is held in the active position and an independent movement of the core back into the inoperative position is prevented.
In order to be able to fix the connecting element or its first end portion on the actuating element, in an advantageous embodiment the actuating element, in particular the second longitudinal portion of the actuating element, has a clearance in which the first end portion of the connecting element is directly or indirectly mounted. The clearance extends both perpendicularly to the longitudinal direction of the shaft and perpendicularly to the movement direction of the actuating element. If the connecting element comprises a plurality of connecting members, the first end portion of the first connecting member is mounted in the clearance. Here, the connecting element is fixed in the clearance in such a way that a movement in the longitudinal direction of the shaft is prevented, with the result that it is not possible for the connecting element to slide out. The clearance can be designed in the form of a hole, for example, with the result that the connecting element can be fixed within the clearance by means of a pin or bolt.
In an advantageous embodiment, starting from a front end side of the actuating element, in particular from a front end side of the second longitudinal portion of the actuating element, the clearance at least partially extends into the actuating element in the longitudinal direction of the shaft, wherein the first end portion of the connecting element is movably mounted in the clearance. Here, the term “front end side” is to be understood as meaning the end side of the actuating element that faces the core and the front end of the shaft, the clearance thus extending perpendicularly to the longitudinal direction of the shaft and perpendicularly to the movement direction of the actuating element, that is to say in the transverse direction and in the direction of a rear end of the shaft. As a result, the connecting element and the actuating element can be mounted in a simple manner in that, for example, a pin or bolt fixed on the connecting element is movably held in the clearance. During a movement of the actuating element, the first end portion of the connecting element is carried along by it, and thus likewise moves perpendicularly to the longitudinal direction.
The pen has in particular a locking and/or latching device by means of which the core can be axially fixed in the active position and/or in the inoperative position, with the result that said core reliably remains in the active position during the writing operation and reliably within the shaft in the inoperative position. For example, the locking and/or latching device comprises locking and/or latching elements arranged on the connecting element, such as, for example, latching lugs which engage in a clearance of the shaft, for example a correspondingly formed groove, in the active position and/or in the inoperative position, that is to say in a respective end position of the core and of the actuating element. A further possibility consists in the connecting element being rotated during an actuation of the actuating element to such an extent that a force exerted on the core by a resetting element which prestresses the core in the active position in the axial or longitudinal direction prevents a back-rotation of the connecting element. Such a locking and/or latching device is particularly appropriate if the connecting element comprises only one connecting member.
In a preferred embodiment, the locking and/or latching device is formed by a joint which connects a first and a second connecting member, which joint connects the first and the second connecting member so as to be pivotable about a pivot axis. Here, for locking, the joint can be moved beyond a dead center if the actuating element is moved from the inoperative position into the active position. In other words: a joint connecting the two connecting members is moved beyond a plane formed by the axis of rotation and the bearing position of the connecting element or of a second connecting element on the core. This results in a self-locking system which prevents an independent movement of the core from the active position into the inoperative position.
In order to support the movement of the core from the active position into the inoperative position after the use of the pen, the pen can comprise, as already mentioned, a resetting element, in particular a spring, which prestresses the core in the active position in the axial or longitudinal direction. As soon as the actuating element is moved from the active position into the inoperative position and the locking or latching position is released, the core is as it were automatically moved back from the active position into the inoperative position. For this purpose, the spring is arranged in a front region of the shaft and presses the core axially in the longitudinal direction toward a rear region of the shaft. The resetting element additionally ensures that the connecting element is held securely on the actuating element, in particular in the clearance.
In a further preferred embodiment, the pen comprises a guide element for guiding the core that is arranged within the shaft between the core and the connecting element and is axially adjustable in the longitudinal direction. The guide element has a receptacle for receiving a rear end of the core. Here, the connecting element or a connecting member or a second, front end portion of the connecting element or of the connecting member is mounted on the guide element and is thus indirectly operatively connected to the core. The guide element is also always pressed against the connecting element by the resetting element, with the result that a reliable retention of the connecting element in the guide element is ensured. Such core guidance has the advantage that tilting or migration of the core during the axial adjustment is prevented. In a structurally simple variant, the guide element has a sleeve-shaped receiving portion for receiving the core and an adjoining guide portion which interacts with an inner peripheral surface of the shaft and slides along it during the axial adjustment and on which the connecting element or the connecting member is mounted or fastened. Here, the outer peripheral surface of the guide element is formed in a corresponding manner to the inner peripheral surface of the shaft, thus having for example a square or triangular cross section.
In an advantageous embodiment, the pen comprises at least one guide means for guiding the connecting element or a connecting member, in particular a front, first end portion of the connecting element or of a connecting member, and/or for guiding the actuating element in the shaft during a movement of the actuating element and of the core. This reliably avoids a transverse movement or jamming of the connecting element and/or of the actuating element during the actuation. For example, the pen comprises at least one first guide means for guiding the connecting element in the shaft during a movement of the actuating element, which guide means comprises a clearance which is formed in the shaft and in which the connecting element is directly or indirectly guided. In other words, the connecting element is at least partially guided or displaceably mounted within a clearance formed on the inner peripheral surface of the shaft. For example, the connecting element is displaceably guided in the axial direction by means of a pin in a clearance designed as a slot, with the result that tilting of the connecting element and migration of the core are avoided. As an alternative to this, the connecting element can be mounted only within the guide element, which is in turn supported by an outer peripheral surface on an inner side of the shaft or on the actuating element, to be more precise on its first longitudinal portion.
To guide the actuating element in the shaft during a movement, in a further preferred embodiment the pen has at least one second guide means for guiding the actuating element in the shaft during a movement of the actuating element, which guide means comprises at least one projection which protrudes from an inner peripheral surface of the shaft, extends perpendicularly to the longitudinal direction of the shaft and interacts in the sense of a sliding pair with at least one receptacle which is formed on a lateral surface of the actuating element, in particular on a lateral surface of the second longitudinal portion, and extends perpendicularly to the longitudinal direction. During an actuation of the actuating element perpendicularly to the longitudinal direction, the latter is thus guided within the shaft. A movement direction of the actuating element that is other than perpendicular to the longitudinal direction is not possible, with the result that jamming or tilting is reliably prevented.
The receptacle is preferably formed by a projection which protrudes from a lateral surface of the actuating element, in particular of the second longitudinal portion, and which extends perpendicularly to the longitudinal direction starting from the first longitudinal portion and at least partially along the lateral surface, and by an end portion of the actuating element, in particular of the second longitudinal portion, that projects with an overhang beyond the lateral surface. The rear end portion of the actuating element bears at least partially level against a rear inner peripheral surface of the shaft and thus prevents a movement of the actuating element in the direction of the rear end of the shaft.
The invention will be explained in more detail with reference to the exemplary embodiments illustrated in the appended drawings, in which:
The core 6, for example a ballpoint pen core in the present case, having a reservoir 6a for storing the ink paste and a writing tip 6c bearing a writing ball 6b is arranged within the shaft 4, to be more precise within its inner part, namely within the second shaft part 4b, and is axially adjustable in the longitudinal direction L of the shaft 4 between an active position and an inoperative position. In the inoperative position (
The pen 2 has, on a rear end, an actuating element 10 which is movable between an inoperative position and an active position in a movement direction B extending perpendicularly to the longitudinal direction L and which, for axial adjustment of the core 6, is operatively connected thereto via a connecting element 12, with the result that, during a movement of the actuating element perpendicularly to the longitudinal direction of the shaft between the inoperative position and the active position, the core is axially adjustable in the longitudinal direction of the shaft. The actuating element 10 has a first longitudinal portion 10a which extends in the longitudinal direction L of the shaft 4 and an adjoining base body or second longitudinal portion 10b which extends perpendicularly to the longitudinal direction L starting from the first longitudinal portion 10a.
A guide element 14 for guiding the core 6 is arranged within the shaft 4 between the core 6 and the connecting element 12 and is axially adjustable in the longitudinal direction L, with the result that the connecting element 12 is indirectly connected to the core 6 via the guide element 14. Here, in the mounted state, the connecting element 12 can be fastened to the guide element 14. The guide element 14 has a receptacle 14a for receiving a rear end of the core 6. A part of an outer peripheral surface 14b of the guide element 14 is formed in a complementary manner to an inner peripheral surface of the shaft 4 or of the shaft part 4b in order to allow problem-free sliding.
The pen 2 has, on a front end, a resetting element, in the present case a spring 16, which surrounds the writing tip 6c in the mounted state and prestresses the core 6 in the active position in a longitudinal direction L of the shaft 4. In the mounted state, the spring 16 is supported by a first end 16a on a front end side 18 of the core 6 or of the reservoir 6a and by a second end 16b on an inner peripheral surface of the conical shaft part 4c, in particular on a stop surface formed on the inner peripheral surface. In the active position, the spring 16 is prestressed, that is to say compressed, and, in the inoperative position, the spring 16 is relaxed. The spring 16 always presses the guide element 14 in the direction of the rear end of the pen 2 and thus against the connecting element 12, with the result that a fastening of the connecting element 12 in or on the guide element 14 is not absolutely necessary.
According to the exemplary embodiment, the connecting element 12 comprises a first connecting member 12a and a second connecting member 12b which are connected to one another so as to be pivotable about a pivot axis S. The first connecting member 12a comprises two plate-shaped elements which are arranged parallel to one another and which are connected at two opposite end portions via a respective web 20. In the exemplary embodiment, the joint 22 connecting the first connecting member 12a to the second connecting member 12b is formed by one of these webs 20 and a clearance 24 in the second connecting member 12b.
The connecting element 12, the first connecting member 12a according to the exemplary embodiment, is rotatably mounted in a central portion 26a about an axis of rotation D on the shaft 4, to be more precise on the inner part of the shaft 4, namely the shaft part 4b. For this purpose, the plate-shaped elements of the first connecting member 12a each have a through-hole 34 through which there is plugged a connecting element 30, in the present case a cylindrical pin, which is in turn is mounted in a clearance 32 of the shaft 4 or of the second shaft part 4b. A first end portion 26b of the connecting element 12 or of the first connecting member 12a is fastened to the actuating element 10, namely to its second longitudinal portion 10b, and a second end portion 28a of the connecting element 12 or of the second connecting member 12b is fastened to the guide element 14, that is to say indirectly mounted on the core 6. The mutually facing end portions 26c, 28b of the first connecting member 12a and of the second connecting member 12b are pivotably connected via the joint 22.
The pen 2 has guide means 36 for guiding the connecting element 12 in the shaft 4 or the second shaft part 4b during a movement of the actuating element 10 and of the core 6. According to the present exemplary embodiment, the guide means 36 comprises a clearance 38 which is formed in the shaft 4 or the second shaft part 4b and in which the connecting element 12 is indirectly guided. Furthermore, the guide means 36 comprises a connecting element 40, for example likewise a cylindrical pin, which is plugged through a through-hole 42 incorporated in the second connecting member 12b and through a through-hole 44 incorporated in the guide element 14. The connecting element 40 is mounted in the clearance 38, which is designed as a slot in the present case, in order to guide the connecting element 12 or the second connecting member 12b during a movement of the core 6 from the inoperative position into the active position, and vice versa.
The pen 2 has guide means 46 for guiding the actuating element 10 in the shaft 4 or the second shaft part 4b during a movement of the actuating element 10 and of the core 6. The guide means 46 comprises a projection 50 which projects from an inner peripheral surface 48 of the shaft 4 or of the second shaft part 4b and which extends perpendicularly to the longitudinal direction L of the shaft 4. Furthermore, the guide means 46 comprises a receptacle 54 which is formed on a lateral surface 52 of the actuating element 10 or its second longitudinal portion 10b and which extends perpendicularly to the longitudinal direction L and, in the mounted state, parallel to the projection 50. During a movement of the actuating element in the movement direction B, the receptacle 54 and the projection 50 interact in the sense of a sliding pair.
Here, the receptacle 54 is formed by a projection 56 which protrudes from the lateral surface 52 of the actuating element 10 or its second longitudinal portion 10b, is perpendicular to the longitudinal direction L starting from the first longitudinal portion 10a and extends up to a free end 49 of the second longitudinal portion 10b, and by an end portion 58 of the actuating element 10 or its second longitudinal portion 10b that projects with an overhang beyond the lateral surface 52 in the direction of a rear end of the shaft.
The free end 49 of the second longitudinal portion 10b of the actuating element 10 has a smaller width B1 than a width B2 of an adjoining central portion 66 of the second longitudinal portion 10b. The free end 49 is also partially arranged in a clearance 68 of the shaft 4 in the inoperative position in order to avoid jamming or blocking of the actuating element 10 at the start of the movement.
In the active position, the core can be fixed by a locking device which is here realized by the joint 22 connecting the first and the second connecting member 12a, 12b of the connecting element 12. By rotating the first connecting member 12a about the rotation point, the joint 22 is moved beyond the dead center and an uncontrolled backward movement of the core 6 from the active position into the inoperative position during the writing operation is thus prevented.
The free end 49 of the second longitudinal portion 10b of the actuating element 10 has a smaller width B1 than an adjoining central portion 66 of the second longitudinal portion 10b. The free end 49 is arranged completely in a clearance 68 of the shaft 4 and additionally protrudes beyond the second lateral surface 60b. In order to move the core 6 from the active position back into the inoperative position again, the locking device can be released by pressing on the free end 49 of the actuating element and the core 6 is moved back into the inoperative position by rotation of the connecting element 12 or of the connecting member 12a by means of the spring 16 which is prestressed in the active position.
As can be seen in particular in the detail view in
The pen 2 once again has, on a rear end, an actuating element 10 which can be moved between an inoperative position and an active position in a movement direction B extending perpendicularly to the longitudinal direction L, said actuating element having a first longitudinal portion 10a and a second longitudinal portion 10b and, for axial adjustment of the core 6, being operatively connected thereto via a connecting element 12, with the result that, during a movement of the actuating element 10 perpendicularly to the longitudinal direction of the shaft between the inoperative position and the active position, the core is axially adjustable in the longitudinal direction of the shaft.
The difference over the pen described in
The connecting element 112 comprises for example a first connecting member 112a and a second connecting member 112b which are connected to one another so as to be pivotable about a pivot axis S. The first connecting member 112a comprises two plate-shaped elements which are arranged parallel to one another and which are connected at two opposite end portions via a respective web 120. The joint 122 which connects the first connecting member 112a to the second connecting member 112b is once again formed by one of these webs 120 and a clearance 124 in the second connecting member 112b.
The connecting element 112, the first connecting member 112a according to the exemplary embodiment, is rotatably mounted in a central portion 126a about an axis of rotation D on the shaft 4, to be more precise on the inner part of the shaft 4, namely the shaft part 4b. For this purpose, the plate-shaped elements of the first connecting member 112a each have a clearance 134 through which there is plugged a connecting element 130, in the present case a cylindrical pin, which once again is mounted in a clearance 132 of the shaft 4 or of the second shaft part 4b. A first end portion 126b of the connecting element 112 or of the first connecting member 112a is fastened to the actuating element 10, namely to its second longitudinal portion 10b, and a second end portion 128a of the connecting element 12 or of the second connecting member 112b is fastened to the guide element 14, that is to say indirectly mounted on the core 6. The mutually facing end portions 126c, 128b of the first connecting member 112a and of the second connecting member 112b are pivotably connected via the joint 122.
To guide the connecting element 112, the pen 2 has guide means 136 according to an alternative variant. According to the present exemplary embodiment, the guide means 136 comprises a connecting element 140 (shown in dotted line), for example likewise a cylindrical pin, which is mounted within or fastened to the guide element 114. In this case, instead of the through-hole, a clearance 142 is provided on the second end portion 128a of the connecting element 112 or of the connecting member 112b and engages around the connecting element 140 fixed within the guide element 114 in such a way that the connecting element 112 is held within the guide element 114 during a movement in the axial direction.
The connecting element 212 is mounted on the shaft 4 so as to be rotatable about an axis of rotation D. The connecting element 212 is mounted by a first end portion 226b in a clearance 62 which extends into the actuating element 10 from a front end side 64 thereof. A front end portion 226c of the connecting element 212 is mounted on the guide element 14 and thus indirectly connected to the core 6. In the active position, the connecting element 212 extends substantially in the longitudinal direction L of the shaft 4, i.e. the front end portion 226b and the rear end portion 226c are arranged behind one another in the longitudinal direction. The connecting element 212 is rotated about the axis of rotation by the actuation of the actuating element 10 to such an extent that a resetting force of the resetting element that presses the guide element 14 against the front end portion 226c of the connecting element 212 is not sufficient to cause a back-rotation of the connecting element 212. As a result, the core 6 is locked in the active position. Only a movement of the actuating element from the active position into the inoperative position brings about a rotation of the connecting element 212 and thus a release of the locking. In the inoperative position, the connecting element 212 bears flat against a rear end side 214 of the guide element 14 and extends substantially transversely to the longitudinal direction L of the shaft 4, i.e. the front end portion 226b and the rear end portion 226c are arranged next to one another in the transverse direction.
Further components of the pen 2 of the exemplary embodiment according to
| Number | Date | Country | Kind |
|---|---|---|---|
| 17184352.7 | Aug 2017 | EP | regional |
