Fitting for movably supporting a pivoting element

The fitting design addresses the issue of high production costs and complexity by allowing the pivot axis to translate along a guide, resulting in a cost-effective and compact kinematic mechanism for furniture flaps.

WO2026080957A1PCT designated stage Publication Date: 2026-04-23JULIUS BLUM GMBH
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
JULIUS BLUM GMBH
Filing Date
2025-10-01
Publication Date
2026-04-23

AI Technical Summary

Technical Problem

Existing fittings for movable furniture parts require multiple joint axes and actuating arms, increasing production costs and complexity while limiting design compactness.

Method used

A fitting design that incorporates a guide device allowing the pivot axis of the actuating arm to move along a guide, eliminating the need for additional joint axes and actuating arms, thereby reducing material usage and enabling a more cost-effective and compact design.

Benefits of technology

The solution provides a well-functioning kinematic mechanism for moving furniture flaps with reduced material costs and a more compact form factor, while maintaining a favorable force curve and stable guidance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a fitting (4), which is designed as a furniture fitting or building fitting, for movably supporting a pivoting element (3), preferably a movable furniture part (3a), relative to a stationary structure (2), preferably a furniture carcass (2a), comprising: - at least one main body (5) to be fastened to the stationary structure (2); - at least one actuating arm assembly (6) that is movable between a closed position and an open position for moving the pivoting element (3), the actuating arm assembly (6) comprising at least one actuating arm (6a) that is pivotable about a joint axis (18), the fitting (4) comprising at least one guide device (15) having at least one guide (15a), the at least one joint axis (18) of the actuating arm (6a) being movable along the at least one guide (15a) at least in portions when the actuating arm assembly (6) moves between the closed position and the open position.
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Description

[0001] Fitting for the movable mounting of a swivel element

[0002] The present invention relates to a fitting, designed as a furniture fitting or building fitting, for the movable mounting of a pivoting element, preferably a movable furniture part, relative to a stationary structure, preferably a furniture carcass, comprising:

[0003] - at least one base body to be attached to the stationary structure,

[0004] - at least one actuating arm arrangement movable between a closed position and an open position for moving the pivoting element, wherein the actuating arm arrangement has at least one actuating arm pivotable about a joint axis.

[0005] Furthermore, the invention relates to a piece of furniture with a stationary structure, preferably a furniture body, a pivoting element mounted to be movable relative to the stationary structure, preferably in the form of a movable furniture part, and with at least one fitting for moving the pivoting element relative to the stationary structure.

[0006] Such fittings are used, for example, to move pivoting elements in the form of furniture flaps. A seven-joint kinematic mechanism of the fitting ensures a sufficient opening angle range for the furniture flap, a favorable force curve for opening, and stable and robust guidance of the furniture flap, particularly in the lateral direction, between a fully closed and a fully open position. Furthermore, the movement of the furniture flap can be controlled by the arrangement of seven joint axes so that, starting from a fully closed end position, the furniture flap first lifts off an end face of the furniture carcass, after which the furniture flap can pivot more than 90°, with the maximum opening angle potentially reaching approximately 130°.However, the arrangement of seven joint axes and seven levers also increases the cost of the fitting in serial production.

[0007] The object of the present invention is to provide a fitting of the type mentioned at the outset, avoiding the disadvantages discussed above.

[0008] This is achieved according to the invention by the features of claim 1. Further advantageous embodiments of the present invention are defined in the dependent claims.

[0009] According to the invention, the fitting has at least one guide device with at least one guide, wherein the at least one pivot axis of the actuating arm is movable at least sectionally along the at least one guide when the actuating arm arrangement is moved between the closed position and the open position.

[0010] The translational mounting of the joint axis of the at least one actuating arm along the at least one guide makes it possible to provide a well-functioning kinematic mechanism for moving the pivoting element, while eliminating the need for an additional joint axis and an additional actuating arm for moving the pivoting element. This reduces material usage and makes the fitting more cost-effective to produce. Furthermore, it also allows for a more compact design of the fitting.

[0011] According to one embodiment, the at least one guide is arranged on the base body and the joint axis on the at least one adjusting arm. Of course, it is also possible, in a kinematic reversal, to arrange the at least one guide on the adjusting arm and the joint axis on the base body of the fitting.

[0012] Further details and advantages of the present invention will become apparent from the following description of the figures.

[0013] Fig. 1 shows a piece of furniture with a [missing element] on one side wall of the

[0014] Furniture-mounted fitting for moving a swivel element,

[0015] Figures 2a-2c show the fitting in three different versions.

[0016] Views,

[0017] Figures 3a and 3b show the fitting in two different perspective views, and

[0018] Fig. 4 shows the fitting in an exploded view.

[0019] Fig. 1 shows a piece of furniture 1 with a stationary structure 2, preferably a furniture body 2a, and a pivoting element 3 movable relative to the stationary structure 2, preferably in the form of a movable furniture part 3a.

[0020] At least one fitting 4 is provided for moving the pivoting element 3, wherein the fitting 4 has at least one base body 5 to be attached to the stationary structure 2. In the illustrated embodiment, the base body 5 of the fitting 4 is attached to a side wall 11 of the stationary structure 2.

[0021] The pivot element 3 is pivotably mounted about an axis that runs horizontally in the assembled state, wherein the pivot element 3 is movable relative to the stationary structure 2 by the fitting 4 between the vertically oriented closed position shown and a raised open position. The stationary structure 2 can comprise at least one cornice 12, wherein the pivot element 3 is freely movable around the cornice 12 without collision when moving between the closed position and a maximum open position.

[0022] The fitting 4 has an actuating arm arrangement 6 movable between a closed position and an open position for moving the pivoting element 3, wherein the actuating arm arrangement 6 comprises at least one actuating arm 6a pivotable about a pivot axis 18.

[0023] In the illustrated embodiment, the actuating arm assembly 6 has further actuating arms 6b, 6c, 6d, which are pivotally connected to the at least one actuating arm 6a. The actuating arm 6d has an interface 13 for connecting the actuating arm assembly 6 to the pivoting element 3, preferably in a detachable manner.

[0024] A mounting body 17 is to be attached to the pivoting element 3, which is designed to be detachably locked to the interface 13 of the adjusting arm 6d. Figure 1 shows the locked state between the interface 13 and the mounting body 17.

[0025] The fitting 4 can have at least one force storage element 7, preferably mounted on the base body 5, preferably with at least one spring element 7a, for applying force to the actuating arm arrangement 6 in order to compensate for the weight of the pivoting element 3 to be attached to the actuating arm arrangement 6.

[0026] In the illustrated embodiment, the spring element 7a is designed as a tension spring. However, other spring elements 7a in the form of at least one compression spring and / or spring assemblies can also be provided. A force that can be stored in at least one energy storage device 7 can be transmitted to the actuating arm assembly 6 by means of a transmission mechanism 8. The transmission mechanism 8 can, for example, have at least two levers 8a, 8b pivotally connected to each other via a pivot axis 14 for acting on the actuating arm assembly 6.

[0027] The energy storage device 7 can, for example, attack the joint axis 14 connecting the two levers 8a, 8b.

[0028] The force storage unit 7 is mounted on the base body 5 at at least one bearing point 9, the position of which is adjustable relative to the base body 5 by an adjusting device 10. In this way, the torque exerted by the force storage unit 7 on the actuating arm assembly 6 is adjustable, so that the weight of the pivoting element 3 to be attached to the actuating arm assembly 6 can be compensated.

[0029] The adjusting device 10 for adjusting the bearing point 9 relative to the base body 5 can have at least one rotatably mounted adjusting element 10a. By rotating the adjusting element 10a using a tool, the position of the bearing point 9 relative to the base body 5, and thus the torque exerted on the adjusting arm assembly 6, can be variably adjusted.

[0030] The fitting 4 has at least one guide device 15 with at least one guide 15a, wherein the at least one pivot axis 18 of the adjusting arm 6a is movable at least sectionally along the at least one guide 15a when the adjusting arm arrangement 6 is moved between the closed position and the open position.

[0031] The translational mounting of the joint axis 18 of the at least one actuating arm 6a along the at least one guide 15a makes it possible to provide a well-functioning kinematic mechanism for moving the pivoting element 3, while eliminating the need for an additional joint axis and an additional actuating arm for moving the pivoting element 3. This reduces material usage and makes the fitting 4 more cost-effective to produce. Furthermore, this also allows for a compact design of the fitting 4.

[0032] Fig. 2a shows the fitting 4 in a perspective view. The fitting 4 has a base body 5, preferably substantially rectangular, for attachment to the stationary structure 2, an actuating arm assembly 6 arranged on the base body 5 with several articulated actuating arms 6a, 6b, 6c, 6d, a force storage device 7 with a spring element 7a for applying force to the actuating arm assembly 6, and a transmission mechanism 8 with levers 8a, 8b for transmitting a force that can be stored in the at least one force storage device 7 to the actuating arm assembly 6.

[0033] The fitting 4 has at least one guide device 15 with at least one guide 15a, wherein the pivot axis 18 of the adjusting arm 6a is movable at least sectionally along the at least one guide 15a when the adjusting arm arrangement 6 is moved between the closed position and the open position.

[0034] According to possible examples, it can be provided that the guide 15a

[0035] - has at least one guiding contour, and / or

[0036] - is fully trained, and / or

[0037] - is formed in the form of a recess in the base body 5, and / or

[0038] - is formed linearly in sections, and / or - is arranged in an upper third of the base body 5, and / or

[0039] - has a rear end and a front end, wherein the rear end of the guide 15a has a smaller distance to a top surface 19 of the base body 5 than the front end.

[0040] The pivot axis 18 is received in the guide 15a without protruding beyond any outer surface of the base body 5. In this way, the fitting 4 can be optionally attached to opposite side walls 11 of the stationary structure 2.

[0041] In the fully closed position of the actuating arm assembly 6, the articulation axis 18 of the actuating arm 6a is located at the rear end of the guide 15a.

[0042] Fig. 2b shows a side view of the fitting 4 with the adjusting arm assembly 6 in a half-open position. By moving the adjusting arm assembly 6 from the fully closed position towards the open position, the pivot axis 18 of the adjusting arm 6a can be moved towards the front end of the guide 15a.

[0043] Fig. 2c shows a side view of the fitting 4 with the adjusting arm arrangement 6 in a fully open position, in which the pivot axis 18 of the at least one adjusting arm 6a is located at the front end of the guide 15.

[0044] In the fully open position of the actuating arm assembly 6, the lever 8a of the transmission mechanism 8 is oriented essentially perpendicular to the top surface 19 of the base body 5 and / or the lever 8b of the transmission mechanism 8 is oriented essentially parallel to the top surface 19 of the base body 5. The actuating arm assembly 6 preferably has exactly six pivot axes 18, 18a, 18b, 18c, 18d, 18e.

[0045] At least one joint axis 18a of the positioning arm arrangement 6 is stationary on the base body 5.

[0046] The transmission mechanism 8 for transmitting a force from the energy storage device 7 to the actuating arm arrangement 6 preferably has exactly two levers 8a, 8b which are pivotably connected to each other via a joint axis 14.

[0047] Preferably, the energy storage unit 7 is mounted on the articulating axis 14, which connects the two levers 8a, 8b of the transmission mechanism 8.

[0048] The energy storage unit 7 is supported on the base body 5 via the bearing point 9, the position of the bearing point 9 relative to the base body 5 being adjustable by the adjusting device 10.

[0049] The adjusting device 10 can include a rotatably mounted adjusting element 10a, which can be easily operated by a person using a tool from a front end face 20 of the base body 5.

[0050] By turning the adjusting element 10a using a screwdriver, a threaded spindle 16 can be set into rotation, whereby the bearing point 9 mounted on the threaded spindle 16 is movable along the threaded spindle 16 .

[0051] In the illustrated embodiment, the adjusting element 9 and the threaded spindle 16 are formed together in one piece.

[0052] The longitudinal direction of the threaded spindle 16 can run obliquely to the front end face 20 of the base body 5. The top surface 19 of the base body 5 and the front end face 20 of the base body 5 are essentially perpendicular to each other.

[0053] Fig. 3a shows the fitting 4 in a perspective view. For the sake of clarity, the pins forming the hinge axes 18-18e are not shown.

[0054] The base body 5 of the fitting 4 has two spaced-apart housing walls 5a, 5b for optional attachment to the stationary structure 2, wherein the actuating arm arrangement 6 is located between the two housing walls 5a, 5b.

[0055] In the illustrated embodiment, the guide 15a of the guide device 15 is formed on both housing walls 5a, 5b of the base body 5, for example in the form of recesses arranged on the housing walls 5a, 5b.

[0056] The fitting 4 has at least two attachment points 21 for attaching the fitting 4 to the stationary structure 2.

[0057] The at least two fastening points 21 can each have a hole 21a for the passage of a screw and at least one bead 21b surrounding the hole 21a, wherein the bead 21b projects transversely from a side surface of the base body 5.

[0058] The at least one bead 21b increases the section modulus of the base body 5, especially when the base body 5 is screwed onto the stationary structure 2.

[0059] Fig. 3b shows another perspective view of the fitting 4, where the second housing wall 5b of the base body 5 and the pins which form the joint axes 18-18e are not shown for the sake of clarity.

[0060] By rotating the adjusting element 10a of the adjusting device 10, the threaded spindle 16 can be set into rotation, whereby the position of the bearing point 9, which is engaged with the threaded spindle 16, relative to the base body 5 can be adjusted. In this way, a torque of the energy storage device 7 acting on the adjusting arm assembly 6 can be adjusted.

[0061] Fig. 4 shows the fitting 4 in an exploded view, wherein the actuating arm arrangement 6 with the actuating arms 6a, 6b, 6c, 6d in a fully closed position is substantially completely contained within the two housing walls 5a, 5b of the base body 5.

[0062] In the illustrated embodiment, the guide 15a of the guide device 15 is formed in the form of a recess on both housing walls 5a, 5b.

[0063] At least one actuating arm 6a-6d can be configured in duplicate, i.e., at least one actuating arm 6a-6d can comprise two partial levers spaced apart from each other in the direction of the pivot axis 18. In the illustrated embodiment, the actuating arms 6a, 6b of the actuating arm assembly 6 are configured in duplicate, thereby significantly improving the stability of the actuating arm assembly 6.

[0064] The fitting 4 can have at least one (schematically indicated) damping device 22 for damping a movement of the actuating arm assembly 6. The damping device 22 can, for example, have at least one piston-cylinder unit or at least one rotary damper. The damping device 22 can, for example, dampen a movement of the actuating arm assembly 6 into the fully closed position and / or into the fully open position.

[0065] The actuating arm arrangement 6 can have at least two or more actuating arms 6a, 6b, 6c, 6d connected to each other by means of joints, which can be nested inside each other in a sandwich-like manner and / or are formed from a sheet of steel.

[0066] At least one lever 8b of the transmission mechanism 8 can have a cranked shape, wherein the lever 8b has at least two offset sections in the longitudinal direction of the joint axis 18.

[0067] It has subsections.

Claims

Patent claims 1. Fitting (4) which is designed as a furniture fitting or building fitting, for the movable mounting of a pivoting element (3) , preferably a movable furniture part (3a) , relative to a stationary structure (2) , preferably a furniture carcass (2a) , comprising: - at least one base body (5) to be attached to the stationary structure (2) , - at least one actuating arm arrangement (6) movable between a closed position and an open position for moving the pivoting element (3) , wherein the actuating arm arrangement (6) has at least one actuating arm (6a) pivotable about a pivot axis (18) , characterized in that the fitting (4) has at least one guide device (15) with at least one guide (15a) , wherein the at least one pivot axis (18) of the actuating arm (6a) is movable at least sectionally along the at least one guide (15a) when the actuating arm arrangement (6) is moved between the closed position and the open position.

2. Fitting (4) according to claim 1, wherein the at least one guide (15a) is arranged on the base body (5) and the pivot axis (18) is arranged on the at least one adjusting arm (6a).

3. Fitting (4) according to claim 1 or 2, wherein the guide (15a) - has at least one guiding contour, and / or - is fully formed, and / or - is formed in the form of a recess in the base body (5), and / or - is linearly formed in sections, and / or - is located in an upper third of the base body (5), and / or - has a rear end and a front end, wherein the rear end of the guide (15a) is a smaller distance to a top surface (19) of the base body (5) than the front end.

4. Fitting (4) according to one of claims 1 to 3, wherein the actuating arm arrangement (6) has at least five, preferably exactly five, further articulation axes (18a, 18b, 18c, 18d, 18e), preferably wherein at least one articulation axis (18a) of the at least five further articulation axes (18a, 18b, 18c, 18d, 18e) is arranged stationary on the base body (5).

5. Fitting (4) according to one of claims 1 to 4, wherein the base body (5) has two spaced-apart housing walls (5a, 5b) for optional placement on the stationary structure (2), wherein the actuating arm arrangement (6) is received between the two housing walls (5a, 5b), preferably wherein the guide (15a) is arranged or formed on both housing walls (5a, 5b) of the base body (5).

6. Fitting (4) according to one of claims 1 to 5, wherein the actuating arm arrangement (6) has several, preferably four, actuating arms (6a, 6b, 6c, 6d) articulated to one another, wherein one actuating arm (6d) of the several actuating arms (6a, 6b, 6c, 6d) has at least one interface (13) for attachment to the pivoting element (3).

7. Fitting (4) according to one of claims 1 to 6, wherein the fitting (4) has at least one force storage device (7) preferably mounted on the base body (5), preferably with at least one spring element (7a), via which the actuating arm arrangement (6) can be acted upon with a force in order to a weight of the assembly to be attached to the positioning arm assembly (6) to compensate for the swivel element (3).

8. Fitting (4) according to claim 7, wherein a transmission mechanism (8) is provided by which a force that can be stored in at least one force storage device (7) can be transmitted to the actuating arm arrangement (6), preferably wherein the transmission mechanism (8) has at least two levers (8a, 8b) pivotally connected to each other via a pivot axis (14) for acting on the actuating arm arrangement (6), preferably wherein the force storage device (7) acts on the pivot axis (14) connecting the two levers (8a, 8b).

9. Fitting (4) according to claim 7 or 8, wherein the force storage device (7) is supported at at least one bearing point (9) on the base body (5), wherein a position of the bearing point (9) relative to the base body (5) is adjustable by at least one adjusting device (10), preferably wherein the at least one adjusting device (10) has a rotatably mounted adjusting element (10a).

10. Fitting (4) according to one of claims 1 to 9, wherein the base body (5) is designed to be optionally attached to opposite side walls (11) of the stationary structure (2).

11. Fitting (4) according to one of claims 1 to 10, wherein the fitting (4) has at least two fastening points (21) for fastening the fitting (4) to the stationary structure (2), wherein the at least two fastening points (21) each have a hole (21a) for the passage of a screw, preferably wherein at least one bead (21b) surrounding the hole (21a) is provided, which projects transversely from a side surface of the base body (5).

12. Fitting (4) according to one of claims 1 to 11, wherein the fitting (4) has at least one damping device (22) for damping a movement of the actuating arm arrangement (6), preferably wherein the damping device (22) has at least one piston-cylinder unit or at least one rotary damper.

13. Fitting (4) according to one of claims 1 to 12, wherein the actuating arm arrangement (6a) has at least two or more actuating arms (6a, 6b, 6c, 6d) articulated to one another, which can be nested in a sandwich-like manner and / or are formed from a sheet of steel.

14. Furniture (1) with a stationary structure (2), preferably a furniture carcass (2a), a pivoting element (3) movable relative to the stationary structure (2), preferably a movable furniture part (3a), and with at least one fitting (4) according to any one of claims 1 to 13, wherein the base body (5) of the at least one fitting (4) on the stationary structure (2) , preferably in and / or on a side wall (11) of the furniture body (2a) .

15. Furniture (1) according to claim 14, wherein the stationary structure (2) comprises at least one cornice (12) and wherein the pivoting element (3) is movable around the cornice (12) without collision during a movement between the closed position and a maximum open position.

Citation Information

Patent Citations

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