WO2018107189A1

WO2018107189A1 - Furniture fitting

Info

Publication number: WO2018107189A1
Application number: PCT/AT2017/060296
Authority: WO
Inventors: Thomas Leitner
Original assignee: Julius Blum Gmbh
Priority date: 2016-12-13
Filing date: 2017-11-07
Publication date: 2018-06-21
Also published as: AT16479U1; CN211874210U; DE212017000269U1

Abstract

The invention relates to a furniture fitting (4), comprising: a housing (5) or a mounting plate (5a) for mounting on a furniture part (3); at least one adjusting part (11) that is movable relative to the housing (5) or to the mounting plate (5a); an adjusting device (13), by means of which a position of the adjusting part (11) relative to the housing (5) or to the mounting plate (5a) can be adjusted, wherein the adjusting device (13) has at least one tool receptacle (16) for torque transfer, wherein the adjusting part (11) can be adjusted relative to the housing (5) or to the mounting plate (5a) by means of a tool (20) by exerting a torque on the tool receptacle (16), wherein the tool receptacle (16) has a combination of a slotted shape (17) having first recesses (21) and a polygonal shape (18) having second recesses (23), such that the tool receptacle (16) can be rotated by at least two different tools (20a, 20b).

Description

furniture accessories

The present invention relates to a furniture fitting comprising:

a housing or a mounting plate for mounting on a furniture part,

at least one actuating part movable relative to the housing or to the mounting plate,

- An adjusting device, by which a position of the adjusting member relative to the housing or the mounting plate is adjustable, wherein the adjusting device has at least one tool holder for transmitting torque, wherein the adjusting member is adjustable by applying a torque to the tool holder by means of a tool relative to the housing or to the mounting plate ,

Furniture fittings with a rotatably mounted tool holder for adjusting a position of the furniture fitting relative to a furniture body and / or setting a spring force on a movable component of the furniture fitting are known in the prior art, for example from WO 2014/121309 A1. The tool holder is often formed cross-shaped, for a rotation of the tool holder, a relatively high pressure force of the tool is necessary and wherein only a small power transmission between the tool and the tool holder is possible. In addition, there is often the risk that the tool slips off the tool holder ("cam-out effect"), which can damage the tool holder and cause injury to the assembly personnel.

The CN 205778122 U shows a furniture fitting for height-adjustable storage of a role, which is mounted movably in the mounting position along a guide rail. The furniture fitting comprises a base plate to be fastened to a furniture body, wherein the roller is adjustable by rotation of an adjusting screw in the height direction. The adjusting screw has an external hexagon for positioning a wrench and an external hexagonal slot for receiving a screwdriver. The disadvantage of this is that the diameter of the hexagon for reliable transmission of torque is to be dimensioned relatively large, wherein the adjustment of the hexagon also a Accordingly, large wrench is required. In addition, the wrench for operating the hexagon socket must be positioned at right angles to the longitudinal direction of the adjusting screw, while the screwdriver for actuating the slot is to be set coaxially with the longitudinal direction of the adjusting screw. For this purpose, a corresponding clearance for the rotational movements of the two tools must be provided in two different directions of movement, whereby the space requirement of the furniture fitting increases and thus a high volume of construction is required. Object of the present invention is to provide a compact furniture fitting of the type mentioned above while avoiding the disadvantages discussed above.

This is achieved by the features of claim 1. Further advantageous embodiments of the invention are specified in the dependent subclaims.

According to the invention it is thus provided that the tool holder has a combination of a slot shape with first recesses and a polygonal shape with second recesses, so that the tool holder is rotatable by at least two different tools.

Screws with a tool holder, which have a combination of a slot shape and a polygonal shape, are basically in EP 2 704 278 A1, in US 2003/0059276 A1, in EP 0 926 362 A1, in EP 2 278 175 A2 and EP 0 780 585 A1, but in combination with other fields of application.

Thus, the tool holder of the furniture fitting can be selectively rotated by at least two different tools, depending on which tool is currently available on site. For example, if the slot shape has already been damaged by frequent use, there is still the possibility that the tool holder is rotated by means of the polygonal shape and by means of the matching tool (or vice versa). Due to the arrangement of the polygonal shape For example, an improved force transmission can be brought about, whereby the undesirable "cam-out effect" and the application of an excessively high manual pressure force for rotating the tool holder are not absolutely necessary The Pozidriv profile differs from a conventional Phillips shape in that the four flanks of the rotary tool do not taper towards the tip, but are plane-parallel to each other, and the Pozidriv profile is associated with torque limited machines such as a cordless screwdriver. As a result, the accuracy of the screwdriver or of the bit (ie the exchangeable screw insert of a cordless screwdriver) can also be improved because the screwdriver or the bit is centered by itself in the Pozidriv profile.

According to one embodiment, it may be provided that the polygonal shape has a square profile or a hexagonal profile. The hexagonal profile can be formed, for example, as a six-round, preferably as a Torx profile or as a Torx-Plus profile. Due to the star-shaped Torx profile, not only high slip resistance but also good torque transmission can be ensured since the rotational forces are transmitted over a larger contact surface. The tool holder is thus made wear less, with the use of cordless screwdrivers with high torque transmission can be used for adjustment. An advantage of the Torx profile is also that for a rotation of the tool holder virtually no axial pressure force is applied by a user. The use of a Torx profile can be particularly advantageous if a heavy weight on the furniture fitting loads (for example, in the height adjustment of heavily loaded drawers) or if components of the furniture fitting, which are significantly biased by a spring device to be adjusted by the tool holder which is the case, for example, with furniture drives for moving highly movable furniture flaps.

The furniture fitting may have at least one movable relative to the housing or to the mounting plate fitting part, which by a rotation of the Tool holder by means of the tool relative to the housing or the mounting plate is adjustable.

According to a further embodiment it can be provided that the furniture fitting is designed as a furniture drive for moving furniture flaps. The furniture drive may comprise at least one movably mounted actuating arm and a spring device for applying force to the at least one actuating arm, wherein the actuating part is adjustable by a rotation of the tool holder by means of a tool relative to the housing or the mounting plate, so that the force acting on the actuating arm of the spring device is adjustable ,

Alternatively, the furniture fitting may also be designed as a furniture hinge, as a drawer pull-out guide, as a drawer side wall and / or as a holding plate for a functional part, for example as a damping device for damping a movement of a movable furniture part or as a drive device for driving a movable furniture part.

For the sake of simplicity, reference will hereinafter be made to a "housing" instead of the "housing or the mounting plate" of the furniture fitting, but the same statements are valid for the mounting plate.

It should be noted that the said "actuating part" can be designed not only in one piece but also in two or more parts.Further details and advantages of the invention emerge from the exemplary embodiments shown in the figures.

1 a, 1 b a piece of furniture with a furniture part movably mounted relative to a furniture body and a furniture fitting for moving the movable furniture part,

2a, 2b a fitting part in the form of the furniture drive in a perspective view from below and an enlarged detail illustration of this, Fig. 3a-3c of the furniture fitting of FIG. 2a in a perspective

Bottom view and the operation of the tool holder with two different tools,

Fig. 4, the two different tools for the rotation of the

Tool holder and the tool holder in one

Top view,

5a-5c, the tool holder in different views,

6a-6c different versions of furniture fittings with a rotatably mounted tool holder,

Fig. 7a-7c another embodiment of a tool holder with a drive part for driving an actuating part of a furniture fitting in different views.

1 a shows a perspective view of a piece of furniture 1, wherein a movable furniture part 3 is mounted pivotably by a furniture fitting 4 relative to a furniture body 2. The furniture fitting 4 is formed in the embodiment shown as a furniture drive 4a for a movable furniture part 3 in the form of a furniture flap, so that the movable furniture part 3 starting from a vertical closed position about a horizontally extending axis of rotation in a relative to the furniture body 2 raised position (and in the reverse direction ) is movably mounted. The furniture fitting 4 has a housing 5 or a mounting plate 5 a for abutment on the furniture body 2, wherein at least one actuating arm 8 for moving the movable furniture part 3 relative to the housing 5 is pivotally mounted. In the illustrated embodiment, the furniture fitting 4, a spring device 7 for applying force to the actuating arm 8, so that the weight of the movable furniture part 3 is at least partially compensated. The actuating arm 8 is connected via a fitting part 6 with the movable furniture part 3 in connection.

Fig. 1 b shows the furniture fitting 4 according to a possible embodiment. On the housing 5, the spring device 7 (for example, at least designed as a helical spring compression spring) is mounted, which is supported on a stationary hinge axis A and presses against the hinge axis B. The hinge axis B is mounted on a first lever end of a two-armed reversing lever 9, which is rotatably mounted about the hinge axis C. The second end of the lever lever 9th is about the hinge axis D with a push lever 10 in conjunction, which is connected via an adjustable actuator 1 1 with a rotatable about a rotation axis E lever 12. By an adjusting device 13, the distance of the control part 1 1 along a guide of the lever 12 relative to the hinge axis E and thus the effective lever arm between the control part 1 1 and the hinge axis E and consequently the effective on the actuator arm 8 torque of the spring device 7 is variably adjustable , The actuator arm 8 is articulated via the hinge axes F and G with a first lever 8 and with a second lever 15, wherein the first lever 14 and the second lever 15 are articulated via the hinge axes H and I with the fitting part 6. The furniture fitting 4 further comprises a damping device 15 in the form of a hydraulic fluid damper, which is designed in the illustrated embodiment as a piston-cylinder unit. During the closing movement of the furniture fitting 4, the pivotable about the hinge axis E actuating arm 8 strikes a plunger of the piston-cylinder unit, whereupon for performing a damping stroke, a relative movement between the cylinder and the piston of the damping device 15 takes place and thus the movement of the actuating arm. 8 (And thus that of the movable furniture part 3) is braked towards the end of the closing movement to the full closed position. Fig. 2a shows the fitting part 4 in the form of the furniture drive 4a in a perspective view from below. In the figure shown, the adjusting arm 8 pivotable relative to the housing 5 has an opening 19, through which a tool 20 for rotating a tool holder 16 of the adjusting device 13 can be inserted, so that the tool holder 16 for adjusting the actuating part 1 1 (FIG. relative to the housing 5 of the furniture fitting 4 by means of the tool 20 is rotatable.

Fig. 2b shows the circled in Fig. 2a area in an enlarged view. The tool holder 16 has a combination of a slot shape 17 and a polygonal shape 18, so that the tool holder 16 can be rotated by at least two different tools 20a, 20b. In the illustrated figure, the slot shape 17 has a Phillips shape, preferably a Pozidriv profile, while the polygonal shape 18 may be formed as a square profile or as a hexagonal profile. In the exemplary embodiment shown, the polygonal shape 18 has a hexalobular, preferably a torx profile. Fig. 3a shows the fitting part 4 in the form of the furniture drive 4a in a view from below, wherein a tool 20 coaxial with the axis of rotation 35 (Fig. 4) of the tool holder 16 of the adjusting device 13 is positioned. As can be seen from the detailed view according to FIG. 3b, the tool holder 16 can be rotated by a first tool 20a in the form of a Phillips screwdriver, preferably by a Pozidriv drive. Evident are the typical for a Pozidriv system drive flanks of the first tool 20a, which do not taper towards the top, but are ground plane-parallel. Optionally, the tool holder 16 is rotatable by at least one second tool 20b in the form of a polygonal screwdriver, preferably a Torx screwdriver, as shown in Fig. 3c.

4 shows the two different tools 20a, 20b for rotating the tool holder 16 rotatable about the rotation axis 35. The first tool 20a has a Pozidriv drive, while the second tool 20b comprises a Torx profile for rotating the tool holder 16. The tool holder 16 has a slot shape 17 in the form of a Pozidriv contour with four first recesses 21 (Fig.5a) for receiving the first tool 20a, wherein the first recesses 21 are formed in a plan view of the tool holder 16 is substantially rectangular. By contrast, the polygonal shape 18 is designed as a hexalobular recess with six second recesses 23 (FIG. 5b) for receiving the second tool 20b, the rounded tips and corners of the torx contour being visible.

Fig. 5a shows the tool holder 16 in a plan view. The slot shape 17 has two opposite first recesses 21 for receiving the first tool 20a, through which a first imaginary axis of symmetry 22 extends. The polygonal shape comprises at least two second recesses 23 for receiving the second tool 20b, through which an imaginary second axis of symmetry 24 extends, wherein the first axis of symmetry 22 and the second axis of symmetry 24 - in a plan view of the tool holder 16 - relative to each other by an angle (a ), wherein it is preferably provided that the angle (a) is between 10 ° and 60 °. In this way it is ensured that for the tools 20a, 20b each an enlarged contact surface is available without damage to the first recesses 21 also leads to damage of the second recesses 23 (or vice versa). According to one embodiment, it may be provided that the tool holder 16 is rotatably mounted about a rotation axis 35, the first recesses 21 of the slot shape 17 having two spaced flanks 36a, 36b and that the second recesses 23 of the polygonal shape 18 relative to the axis of rotation 35 of the tool holder 16 have a periodic sequence of maxima 37a and minima 37b, wherein in a plan view of the tool holder 16 at least one maximum 37a, preferably two or more maxima 37a of the polygonal shape 18 coincides with one of the flanks 36a, 36b of the first recesses 21 of the slot shape 17 , This has the particular advantage that both the contact surfaces of the first recesses 21 as those of the second recesses 23 for the two different tools 20a, 20b are increased and consequently also an improved torque transmission is brought about. While this effect in the second recesses 23 of the polygonal shape 18 plays a minor role (namely, the polygonal 18 already allows a very good power transmission), so does the increase of the contact surface of the first recesses 21 for cooperation with a first tool 20a in the form of a Phillips screwdriver represents a significant improvement in torque transmission.

FIG. 5 b shows a perspective view of the tool holder 16, which in the exemplary embodiment shown is formed integrally together with a shaft 25. On the shaft 25, a (schematically illustrated) threaded portion 26 may be formed, on which an adjusting part 1 1 (Fig. 1 b) may be mounted in the form of a threaded nut and which by a rotation of the tool holder 16 by means of the tools 20a, 20b along the threaded portion 26 is adjustable. Alternatively, it is possible that the adjusting part 1 1 and the threaded nut are formed as separate components, but which are motion-coupled with each other. 5c shows a further perspective view of the tool holder 16. Fig. 6a shows a furniture fitting 4 in the form of a furniture hinge 4b, by which a movable furniture part 3 is pivotally arranged relative to a furniture body 2. The furniture hinge 4b comprises a fitting part 33 in the form of a hinge arm, which is to be fastened to the furniture body 2 via a mounting plate 5a, not shown here. A hinge cup 28 is retractable in a cylindrical bore of the movable furniture part 3, wherein the hinge cup 28 is pivotally connected via at least one hinge lever 29 with the fitting part 33 designed as a hinge arm. In the illustrated embodiment, the tool holder 16 is mounted on the fitting part 33 in the form of the hinge arm, wherein in the assembled state by rotation of the tool holder 16 by means of a tool 20a, 20b, a position of the fitting 33 is adjustable relative to the attached to the furniture body 2 mounting plate 5a.

Fig. 6b shows a part of a furniture fitting 4 in the form of a designed as a hollow profile drawer side wall 4c, which - as is known - with a front end portion with a front panel of a drawer is detachably connectable. In this case, an actuating part 1 1 with fasteners 29 in the form of dowels to be mounted on the front panel, wherein the control part 1 1 by an entry into the front end portion of the drawer side wall 4 c by the force of a spring 30 can be locked. The tool holder 16 is mounted on one of the drawer side wall 4c associated housing 5, wherein by rotation of the tool holder 16 by means of a tool 20a, 20b, the position of the control part 1 1, for example, the height, the lateral position and / or the inclination relative to the housing. 5 and thus is adjustable relative to the drawer side wall 4c.

Fig. 6c shows a furniture fitting 4 in the form of a holding plate 4d, which is to be fastened to a furniture part and which is designed for mounting a functional part 31. According to one exemplary embodiment, the functional part 31 may comprise a damping device for damping a movement of the movable furniture part 3, for example a piston-cylinder unit, wherein an actuating part 1 1 in the form of a linearly movable plunger 34 of the damping device protrudes relative to a housing 5 of the retaining plate 4d , By rotation of the tool holder 16, the position of the plunger 34 relative to the housing 5 and / or the damping performance of the damping device is variably adjustable. Based on the embodiments shown, it is immediately apparent that the tool holder 16 can also be used advantageously in other furniture fittings, such as drawer pull-out guides or in other furniture drives (such as ejection devices for ejecting furniture parts).

Fig. 7a-7c show another embodiment of a tool holder 16 with a drive member 38 for driving a control part 1 1 of a furniture fitting 4 in different views. The tool holder 16 is rotatably mounted about the rotation axis 35 and has a first cylindrical portion 40 which is rotatable about the rotation axis 35. The tool holder 16 comprises a second cylindrical portion 38, which has a smaller diameter than the first cylindrical portion 40. The direction of the longitudinal axis 39 of the second cylindrical portion 38 extends parallel to the axis of rotation 35 of the tool holder 16.

FIG. 7b shows the tool holder 16 according to FIG. 7a in a plan view, while FIG. 7c shows a perspective view of the tool holder 16. The drive member 38 may, for example, engage in a corresponding recess or in a corresponding guide of an actuating part 1 1, wherein the actuating member 1 1 via the drive member 38 of the tool holder 16 is drivable.

Claims

claims

Furniture fitting (4), comprising:

a housing (5) or a mounting plate (5a) for mounting on a furniture part (3),

- At least one relative to the housing (5) or to the mounting plate (5a) movable actuating part (1 1),

- An adjusting device (13) through which a position of the adjusting part (1 1) relative to the housing (5) or to the mounting plate (5a) is adjustable, wherein the adjusting device (13) has at least one tool holder (16) for transmitting torque, said Adjusting part (1 1) by applying a torque to the tool holder (16) by means of a tool (20) relative to the housing (5) or to the mounting plate (5a) is adjustable,

characterized in that the tool holder (16) has a combination of a slot shape (17) with first recesses (21) and a polygonal shape (18) with second recesses (23), so that the tool holder (16) by at least two different tools (20a , 20b) is rotatable.

Furniture fitting according to claim 1, characterized in that the slot shape (17) has a Phillips shape, preferably a Pozidriv profile.

Furniture fitting according to claim 1 or 2, characterized in that the polygonal shape (18) has a square profile or a hexagonal profile.

Furniture fitting according to claim 3, characterized in that the hexagonal profile is designed as a six-round, preferably as a Torx profile.

Furniture fitting according to one of claims 1 to 4, characterized in that the slot shape (17) - in a plan view of the tool holder (16) - two opposite first recesses (21) for receiving a first tool (20a), through which a first imaginary axis of symmetry (22) extends, and that the polygonal shape (18) - in a plan view of the tool holder (16) - at least two second recesses (24) Receiving a second tool (20b) through which an imaginary second axis of symmetry (24) extends, wherein the first axis of symmetry (22) and the second axis of symmetry (24) - in a plan view of the tool holder (16) - relative to each other by an angle (a) are offset, wherein it is preferably provided that the angle (a) is between 10 ° and 60 °.

Furniture fitting according to one of claims 1 to 5, characterized in that the furniture fitting (4) at least one relative to the housing (5) or the mounting plate (5a) movable fitting part (33), which by a rotation of the tool holder (16) by means of a Tool (20a, 20b) relative to the housing (5) or the mounting plate (5a) is adjustable.

Furniture fitting according to one of claims 1 to 6, characterized in that the furniture fitting (5) has a threaded portion (26) and an actuating part (1 1) in the form of a threaded nut, wherein the threaded nut by a rotation of the tool holder (16) by means of a tool (20a, 20b) along the threaded portion (26) is adjustable.

Furniture fitting according to claim 7, characterized in that the tool holder (16) is formed integrally with the threaded portion (26).

Furniture fitting according to one of claims 1 to 8, characterized in that the furniture fitting (4) is designed as a furniture drive (4a) for moving furniture flaps.

0 furniture fitting according to claim 9, characterized in that the furniture drive (4a) at least one movably mounted actuating arm (8) and a spring device (7) for applying force to the at least one actuating arm (8), wherein the actuating part (1 1) by a Rotation of the tool holder (16) by means of a tool (20a, 20b) relative to the housing (5) or the mounting plate (5a) is adjustable so that the force acting on the actuator arm (8) of the spring device (7) is adjustable. Furniture fitting according to one of claims 1 to 8, characterized in that the furniture fitting (4) is designed as a furniture hinge (4b).

Furniture fitting according to one of claims 1 to 8, characterized in that the furniture fitting (4) is designed as a drawer side wall (4c)

Furniture fitting according to one of claims 1 to 8, characterized in that the furniture fitting (4) as a holding plate (4d) for a functional part (31), preferably a damping device for damping a movement of a movable furniture part (3) is formed.

Furniture fitting according to one of claims 1 to 13, characterized in that the tool holder (16) about an axis of rotation (35) is rotatably mounted, wherein the first recesses (21) of the slot shape (17) has two spaced apart flanks (36a, 36b) and that the second recesses (23) of the polygonal shape (18) relative to the axis of rotation (35) of the tool holder (16) have a periodic sequence of maxima (37a) and minima (37b), wherein in a plan view of the tool holder (16) at least a maximum (37a), preferably two or more maxima (37a), of the polygonal shape (18) coincides with one of the flanks (36a, 36b) of the first recesses (21) of the slot shape (17).