Patent Application
20240151082
The present invention relates to a furniture fitting, in particular a furniture hinge, with the features of the preamble of claim 1, a piece of furniture with such a furniture fitting as well as a method for fastening a furniture fitting.
Corresponding furniture fittings, in particular furniture hinges, are formed to mount a furniture part movable on a furniture carcass. Such furniture fittings comprise at least one installing body which is to be fastened on the furniture part or furniture carcass via at least one fastening screw.
The installing body of the furniture fitting is usually made of a metallic material, for example steel, wherein the fastening screw can be screwed into the furniture carcass or furniture part via a drilled hole or opening in the installing body and then retains the installing body on the furniture carcass or the furniture part.
It is further known, in order to facilitate the fastening of the furniture fitting on the furniture part or furniture carcass, to pre-install the fastening screw on the installing body in advance, as is shown for example by AT 008773 U1. Thus a drilled hole, which corresponds to an external diameter of the thread of a fastening screw (the drilled hole is usually produced with a somewhat smaller diameter than the external diameter of the thread), is prefabricated in the installing body, wherein the fastening screw is then driven into the drilled hole until the first thread turns engage with the drilled hole of the installing body.
Once the first thread turns engage with the installing body, the fastening screw is pre-installed and only a small part (the tip) of the fastening screw protrudes from a contact surface at which the furniture fitting can be attached to the furniture part and/or furniture carcass.
If the user now attaches the furniture fitting to the furniture part or furniture carcass at the preset position, with a small application of force the tip of the fastening screw (which protrudes from the contact surface) is pushed into the surface of the furniture part or furniture carcass or inserted into a prefabricated drilled hole on the furniture part or furniture carcass, wherein the operator can then screw in the fastening screw (for fastening).
This results in the substantial advantage that, when attaching the furniture fitting to the furniture part or furniture carcass, an operator only needs to hold the furniture fitting and can screw in the pre-installed screw directly. Thus the operator no longer needs to introduce (or insert) the fastening screw separately (using another free hand) into an opening of the furniture fitting while they position the furniture fitting on the furniture part or furniture carcass.
However, a disadvantage here is that, for pre-installation, the fastening screw must be driven into the drilled hole or opening of the installing body far enough for it to engage with its full circumference, wherein a part of the fastening screw (the tip of the screw) already projects from the contact surface.
A further disadvantage is that the circumference of the fastening screw engages with or rubs against the hard, metallic installing body in the drilled hole or opening, whereby the thread tip of the fastening screw can be damaged before use and no longer be used with its full “sharpness” in the furniture part or furniture carcass.
The object of the present invention is to provide a furniture fitting and a method for fastening a furniture fitting in which the previously mentioned disadvantages of the state of the art are at least partly improved and/or a better handling of the furniture fitting, preferably during a fastening, is achieved.
This is achieved according to the invention with a furniture fitting with the features of claim 1, a piece of furniture with such a furniture fitting as well as a method for fastening a furniture fitting with the features of claim 15.
It is provided according to the invention that a furniture fitting, in particular a furniture hinge, for the movable mounting of a furniture part on a furniture carcass comprises at least one installing body, which is to be fastened on the furniture part or furniture carcass via at least one fastening screw, wherein the installing body is formed of a first material, preferably a metallic material, particularly preferably a steel, at least in areas, wherein the installing body has at least one receiving element in which the at least one fastening screw is or can be mounted, wherein the at least one receiving element is formed at least predominantly of a second material, preferably plastic, that is different from the first material.
Thus the installing body of the furniture fitting can serve to fasten the furniture fitting on a furniture part or furniture carcass with the help of a receiving element with the at least one fastening screw, wherein the fastening screw engages on a material on the installing body which differs from that of the rest of the installing body.
Thus for example a soft, elastic, easily deformable material can be chosen for the receiving element, wherein the fastening screw can drill through the receiving element, wherein no damage to the fastening screw occurs (if the receiving element is made of a plastic, for example).
Thus the fastening screw can already be retained by the receiving element, even after only a tip of the fastening screw has penetrated, because it is no longer absolutely essential to match an opening or drilled hole to a circumference of the fastening screw, because the fastening screw can pierce or displace the receiving element.
By way of example, if a rubbery-elastic material is used for the at least one receiving element, in theory the provision of an opening in the receiving element is not actually necessary, because the fastening screw can itself drill through the rubbery-elastic material after insertion and thus an opening for the at least one fastening screw is formed by screwing the fastening screw into the at least one receiving element, wherein the rubbery-elastic material always provides a foothold for the at least one fastening screw because the rubbery-elastic material adapts to an external diameter and/or geometry of the at least one fastening screw.
A furniture fitting according to the invention or a method according to the invention can also be used and subsequently installed in embodiments already known in the state of the art, as mentioned for example in the introduction to the description.
Advantageous embodiments of the invention are defined with reference to the dependent claims.
It can be provided that the installing body has at least one contact surface which can be attached to the furniture part or furniture carcass at least in areas in the course of the fastening, wherein in an unfastened state of the installing body the at least one fastening screw is arranged at least predominantly on a side facing away from the contact surface and can be moved at least in sections through an opening in the contact surface in the course of the fastening.
It is preferably provided that the at least one receiving element has at least one substantially radial indentation.
The installing body can have at least one contact surface which can be attached to the furniture part or furniture carcass at least in areas in the course of the fastening, wherein for example the at least one indentation is arranged on a side of the at least one receiving element facing away from the contact surface.
This substantially radial indentation can be provided to crush chips forming around a screwing-in of the at least one fastening screw, which form from the second material (of which the at least one receiving element is made). Such a crushing of the chips avoids the risk of flow chips forming, which could hinder or disrupt the installation or fastening of the furniture fitting on a furniture part or furniture carcass. Crushing the chips means that only smaller chips—so-called chip fragments or discontinuous chips—are generated which can be easily removed from the installation point.
It can be provided that the at least one receiving element and/or the installing body has at least one recess, the installing body preferably has at least one contact surface which can be attached to the furniture part or furniture carcass at least in areas in the course of the fastening, wherein for example the at least one recess is arranged on a side of the at least one receiving element facing the contact surface.
By providing a recess, it can be provided that an area—preferably on the contact surface or between the contact surface and the at least one receiving element—is created in which chips forming through the screwing of the at least one fastening screw into the at least one receiving element can accumulate without these chips causing an unwanted lifting of the installing body of the furniture part or furniture carcass during the fastening.
Furthermore, the at least one recess can be provided so that plastic or elastically deforming (second) material of the at least one receiving element can collect, wherein again the risk of the installing body being lifted by plastic or elastically deforming (second) material off the furniture part or furniture carcass during the installation or fastening is reduced.
It is preferably provided that the at least one fastening screw has a screw head, preferably a countersunk head, which can be countersunk in the at least one receiving element in areas in the course of the fastening by deforming the at least one receiving element.
By partly or fully countersinking a screw head of the at least one fastening screw, it can be provided that the at least one fastening screw is countersunk fully in the installing body, whereby a visually tidy appearance can be created and/or space for adjacent, possibly moving components is created.
It can be provided that the at least one receiving element is mounted in movement-locking manner in at least one opening of the installing body by a press fit, preferably by plastic deformation of the at least one receiving element.
It is preferably provided that the at least one receiving element is connected to the installing body and/or is injection-molded on the installing body using a method for shaping plastic, preferably using an injection-molding method.
It can be provided that at least one receiving device is provided, wherein the furniture fitting is or can be, preferably releasably, connected to the installing body by means of the at least one receiving device.
The at least one receiving device can have a locking device with which the installing body can be connected, in particular releasably, to a fitting part of the furniture fitting.
It can be provided that the at least one receiving element is arranged in at least one opening, preferably a drilled hole, of the installing body.
It is preferably provided that the second material has a lower hardness and/or a lower strength and/or a lower modulus of elasticity and/or a higher ductility compared with the first material.
It can be provided that a fitting body and/or furniture hinge and/or fitting part which can be or is connected to the installing body has at least one clearance in an area of the at least one fastening screw and/or of the at least one receiving element, so that the at least one fastening screw mounted or mountable in the receiving element and/or the at least one receiving element is accessible for an operator.
It can be provided that the furniture fitting is formed as a furniture hinge with two fitting parts connected to one another via one, preferably precisely one, hinge pin.
Protection is further sought for a method for fastening a furniture fitting, wherein an installing body of the furniture fitting is formed of a first material, preferably a metallic material, particularly preferably a steel, at least in areas, and the installing body has at least one receiving element in which at least one fastening screw is mounted with a screw tip, wherein the at least one receiving element is formed at least predominantly of a second material, preferably plastic, that is different from the first material, wherein
It is preferably provided that
It can be provided that, during the screwing of the at least one fastening screw, the at least one receiving element is deformed, wherein escaping and/or deformed second material is collected in at least one recess on the at least one receiving element and/or the installing body.
It is preferably provided that, during the screwing of the at least one fastening screw, at least one chip forms through the screwing of the at least one fastening screw into the receiving element, wherein the at least one chip is crushed by at least one indentation on the at least one receiving element.
Further details and advantages of the present invention arise from the following description of the figures. There are shown in:
The furniture hinges 4 have two fitting parts 5, 6 connected to one another in an articulated manner, wherein a first fitting part of the furniture hinge 4 is to be fastened on the furniture carcass 2 and a second fitting part 6 of the furniture hinge 4 is to be fastened on the movable furniture part 3.
In the embodiment example shown, the furniture hinges 4 are formed as so-called frame hinges. The first fitting part 5 of the furniture hinge 4 can be designed as an angled hinge arm 5a (
The first fitting part 5 in the form of the hinge arm 5a is to be fastened on the furniture carcass 2 via an installing body 7, wherein in a first installation step the installing body 7 is to be fastened on the furniture carcass 2, preferably on the frame 2a. In a subsequent installation step, the first fitting part 5 can be locked toollessly to, and can be unlocked toollessly from, the installing body 7 that is pre-installed on the furniture carcass 2.
A position of the furniture part 3 in an installed state on the furniture carcass 2 is settable by at least one or more setting devices 9a, 9b, 9c. It is preferably provided that three setting devices 9a, 9b, 9c are provided, by which a three-dimensional setting of the furniture part 3 relative to the furniture carcass 2 can be made possible. A depth setting of the movable furniture part 3 can be brought about by the first setting device 9a, a height setting can be brought about by the second setting device 9b and a lateral setting can be brought about by the third setting device 9c. At least one, preferably all, of the setting devices 9a, 9b, 9c have a rotatably mounted setting wheel (for example an eccentric, a spiral disk or a setting screw).
The second fitting part 6 of the furniture hinge 4 can be designed as a hinge cup 6a, which is pivotably connected to the first fitting part 5 via at least one hinge pin 14 (
The damping device 10 for damping a movement of the furniture hinge 4 is arranged in the cavity 6b of the hinge cup 6a. The second fitting part 6 is pivotably connected to the first fitting part 5 via at least one, preferably precisely one, hinge pin 14.
The furniture hinge 4 has a spring device 15, by which the second fitting part 6 is movable into a closed and/or into an open end position relative to the first fitting part 5. In the embodiment example shown, the spring device 15 is designed as a leg spring, wherein the two ends of the leg spring in each case have a plastic sheath 16. The plastic sheaths 16 in each case rest against a control curve 32a, 32b of the first fitting part 5 in an assembled state of the furniture hinge 4, whereby the friction is reduced and the fitting parts 5, 6 are movable relative to one another smoothly and practically without generating noise.
The installing body 7 is to be fastened on the furniture carcass 2, preferably on the frame 2a, via at least one fastening screw 17. The installing body 7 has at least two protrusions 34a, 34b, which can be attached to opposite sides of the frame 2a for improved pre-positioning of the installing body 7.
The installing body 7 furthermore has a receiving element 41, which receives the fastening screw 17 and is not visible in this representation for viewing reasons (reference may be made/had to
The first fitting part 5 can be releasably locked to the installing body 7 by a locking device 18. The locking device 18 comprises at least one retaining part 19 with a, preferably cylindrical, outer contour 19a and a locking contour 20 corresponding thereto, wherein the locking contour 20 has at least one first part 20a which is formed stationary and at least one second part 20b that is movable, preferably pivotable, relative to the first part 20a, wherein in a locked position the at least one retaining part 19 is received between the two parts 20a, 20b of the locking contour 20.
The at least one retaining part 19 can be formed in a simple manner as a cylindrical pin. The fitting part 5 to be locked can have at least two side bars 21a, 21b spaced apart from one another, between which the cylindrical pin is arranged.
The movable second part 20b of the locking contour 20 is pretensioned by a spring element 25, preferably a leg spring or leaf spring, which applies a force to the second part 20b of the locking contour 20 in the direction of the locked position. The movable second part 20b of the locking contour 20 is mounted rotatable about a bolt 30, which forms the pivot pin 24 for the movable second part 20b of the locking contour 20.
The two fitting parts 5, 6 of the furniture hinge 4 can be connected to one another via at least one articulated lever 12 separate from the two fitting parts 5, 6. A position of the at least one articulated lever 12 relative to the fitting part 5, 6 to be locked on the installing body 7 (in this case relative to the hinge arm 5a) is settable by the setting device 9c. For this purpose, the first fitting part 5 can have at least one linear guide 31a, 31b for the settable mounting of the articulated lever 12.
The fitting part 5 of the furniture hinge 4 to be locked on the installing body 7 can have at least two, preferably precisely three, panels 29a, 29b, 29c arranged one over another. The at least two panels 29a, 29b, 29c are displaceable relative to one another and/or pivotable relative to one another through at least one setting device 9a, 9b, 9c. For the linear setting of the panels 29a, 29b, 29c relative to one another, at least two pin-shaped retaining parts 19, 27, 33 can be provided, along which the at least two panels 29a, 29b, 29c are linearly displaceable relative to one another.
In the embodiment example shown, the setting devices 9a, 9b, 9c in each case have an eccentric. The eccentric of the first setting device 9a is rotatably connected (preferably by orbital riveting) to the second panel 29b via the mounting point 40a and is supported on the third panel 29c with its eccentric control contour.
The eccentric of the second setting device 9b is rotatably connected (preferably by orbital riveting) to the first panel 29a via the mounting point 40b and is supported on the second panel 29b with its eccentric control contour.
The eccentric of the third setting device 9c is rotatably connected (preferably by orbital riveting) to the first panel 29a via the mounting point 40c and is supported on the articulated lever 12 with its eccentric control contour.
Of course, it is also possible for the setting devices 9a, 9b, 9c also to have, instead of the eccentric, a worm gear or a rotatable spiral disk, which cooperates with protrusions of the component to be set that are spaced apart from one another.
The locking device 18 can comprise at least one further retaining part 27, wherein the two retaining parts 19, 27 of the locking device 18 are spaced apart from one another in a direction transverse to the at least one hinge pin 14, wherein it is preferably provided that
The at least one stationary first part 20a of the locking contour can be formed on a hook element 22. It is preferably provided that the first part 20a of the locking contour 20 is open in the direction of the fitting part 6, which is connected to the fitting part 5 to be locked via the at least one hinge pin 14. It can be seen that the at least one stationary first part 20a of the locking contour 20 has a concave, preferably approximately semi-circular, portion in cross section.
In the embodiment example shown, the locking contour 20 has at least two stationary first parts 20a, which are spaced apart from one another in a direction parallel to the at least one hinge pin 14, wherein the at least one second part 20b of the locking contour 20 is arranged between the at least two stationary first parts 20a of the locking contour 20.
The at least one second part 20b of the locking contour 20 can be formed on a lever 23. It is preferably provided
The second panel 29b can be inserted from behind, i.e. in the X direction, between the side bars 21a, 21b of the third panel 29c, wherein the third panel 29c has a stop 36 pointing inwards, preferably in the form of an embossment, for limiting a movement of the second panel 29b. The eccentric of the first setting device 9a is rotatably connected to the second panel 29b via the mounting point 40a and is supported on the third panel 29c with its eccentric control contour. The third panel 29c can be set relative to the second panel 29b in the X direction by actuating the first setting device 9a.
The eccentric of the second setting device 9b is rotatably connected to the first panel 29a via the mounting point 40b and is supported on the second panel 29b with its eccentric control contour. The panels 29b, 29c can together be set relative to the first panel 29a in the Y direction by actuating the second setting device 9b.
In the embodiment example shown, the third setting device 9c has a setting screw, which is supported with its lower end on the mounting point 40c of the first panel 29a. The setting screw of the third setting device 9c is provided with an external thread, which cooperates with an internal thread 41 of the second panel 29b. The second panel 29b is pivotable relative to the first panel 29a about the pin-shaped retaining part 19 in the Z direction by actuating the third setting device 9c.
The two stationary first parts 20a of the locking contour 20 are in each case formed on a hook element 22, wherein the movable second part 20b of the locking contour 20 is arranged between the two first parts 20a of the locking contour 20. The movable second part 20b is mounted pivotable about the bolt 30, which forms the pivot pin 24 for the second part 20b. It is preferably provided that the direction of the at least one hinge pin 14 and the direction of the pivot pin 24 run parallel to one another.
It should be noted that in an assembled and in an installed state of the furniture hinge 4 on the furniture carcass 2 the fastening screw 17, by which the installing body 7 is fastened on the furniture carcass 2, is always to be actuated using a tool, preferably a screwdriver. For this, the recesses in the panels 29a, 29b, 29c are to be arranged such that an insertion of the tool and a rotational movement of the fastening screw 17 by means of the tool are possible in all operating positions of the furniture hinge 4.
For reasons of clarity, in
The first fitting part 5 comprises the two retaining parts 19, 27, which are spaced apart from one another and have a cylindrical outer contour in the embodiment example shown. The two retaining parts 19, 27 are spaced apart from one another in a direction transverse to the at least one hinge pin 14 and in each case have a longitudinal direction L1, L2, which longitudinal directions run substantially parallel to one another.
The installing body 7 is provided with the locking contour 20, which has the two stationary first parts 20a and the movable second part 20b. The second part 20b is mounted movable between the two stationary parts 20a. The locking contour 20 of the installing body 7 can be releasably locked to the retaining part 19 of the fitting part 5. The installing body 7 additionally has a receiving device 28 for receiving the further retaining part 27 of the first fitting part 5.
Starting from the position according to
The two retaining parts 19, 27 can be arranged in the locking contour 20 and in the at least one receiving device 28 through a single common, preferably translational, joining movement FB (
The locking between the installing body 7 and the fitting part 5 is releasable again through the exertion of force on the second part 20b of the locking contour 20 against a force of the spring element 25. The exertion of force on the second part 20b for releasing the locking can be effected for example manually, i.e. without the use of a tool. Alternatively, a tool can also be used for the exertion of force on the second part 20b for releasing the locking between the installing body 7 and the fitting part 5.
For reasons of clarity, in
In the embodiment example shown, the locking device 18 comprises a third locking contour 20c which is arranged on the unlocking lever 37 and adapted to an outer contour 19a of the retaining part 19 at least in sections. In the embodiment example shown, the third locking contour 20c is formed substantially semi-circular.
The unlocking lever 37 is formed as a component separate from the second part 20b of the locking contour 20, wherein the unlocking lever 37 is immediately and directly accessible for a manual actuation or for an actuation being effected by means of a tool.
The unlocking lever 37 is pivotable about the pivot pin 38 by a manual lifting movement, whereby the third part 20c of the locking contour 20 can be brought out of engagement with the retaining part 19 (
The unlocking lever 37 is coupled via at least one coupling device 39 to the second part 20b of the locking contour 20 such that the at least one unlocking lever 37 and the second part 20b of the locking contour 20 are pivotable in opposite directions of rotation.
In the embodiment example shown, the coupling device 39 is formed by a protrusion, arranged on the unlocking lever 37, which, in a locked position between the installing body 7 and the fitting part 5, rests loosely against the second part 20b of the locking contour (
The installing body 7 is connected via a receiving element 54, which is arranged in an opening 47 of the installing body 7, to the furniture part 3 or furniture carcass 2 via a fastening screw 17.
In this embodiment example, the fastening screw 17 shown has a tip 44 and a countersunk head 43.
In this embodiment variant, the receiving element 45 is now connected in movement-locking manner in the installing body 7 via a press fit. Alternatively, it could also be provided that the receiving element 45 is molded by injection molding into the opening 47 of the installing body 7.
Here, the receiving element 45 of this embodiment example is produced from a rubber material, whereas the installing body 7 is made using a steel.
The receiving element 45 is arranged in the opening 47, which is formed as a drilled hole, of the installing body 7.
The installing body 7 has a contact surface 49 with which contact surface 49 the installing body 7 can be attached to a furniture part 3 or furniture carcass 2 for fastening or installation.
The receiving element 45 is furthermore formed, on a side 51 facing away from the contact surface 49, with radial indentations 46 (see also
Further, the opening 47—more specifically the installing body 7—has, on a side 50 facing the contact surface 49, a recess 48, which is formed to receive material of the receiving element 45 that has escaped and/or deformed during the screwing-in of the fastening screw 17 (cf. also
This results in the advantage that it is necessary to drive the fastening screw 17 further into the installing body 7 until the largest diameter of the fastening screw 17 engages, wherein the tip 44 of the fastening screw 17 would already protrude further at the contact surface 49 of the installing body 7 and would possibly hinder an attachment of the installing body 7 to a furniture carcass 2 or a furniture part 3.
The detail view B represented in
In this pre-installed state of the installing body 7 with the fastening screw 17, the installing body 7 can now be attached to a furniture part 3 or a furniture carcass 2 at the contact surface 49.
Once the installing body 7 has now been attached at the contact surface 49, the fastening of the installing body 7 to the furniture carcass 2 or furniture part 3 can be undertaken by screwing the fastening screw 17 through the opening 47 of the installing body 7 into the furniture carcass 2 or furniture part 3 until the countersunk head 43 of the fastening screw 17 reaches the receiving element 45.
The countersunk head 43 of the fastening screw 17 can now be countersunk into the receiving element 45, whereby the receiving element 45 is deformed.
The displaced material of the receiving element 45 is now accommodated in the recess 48 of the opening 47 of the installing body 7, whereby it is ensured that this displaced material does not lift the installing body 7 off the furniture part 3 or furniture carcass 2 at the contact surface 49.
Here it can be seen how the fastening screw 17 has been pre-installed by screwing the tip 44 into the receiving element 45. The receiving element 45 is in turn mounted in movement-locking manner in the installing body 7 by a press fit.
In this embodiment example, the fitting part 5 is connected to the installing body 7.
The fitting part 5 has a clearance 52, through which the fastening screw 17, accessible from the outside, can be screwed in or also released by an operator.
This clearance 52 is provided in an area of the fitting part 5 in which the fastening screw 17 is to be arranged for fastening the furniture fitting 42 via the installation of the fitting part 5 on the installing body 7.
| Number | Date | Country | Kind |
|---|---|---|---|
| GM 50100/2021 | May 2021 | AT | national |
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/AT22/60103 | Apr 2022 | US |
| Child | 18501532 | US |
