EP3310982A1

EP3310982A1 - Furniture hinge

Info

Publication number: EP3310982A1
Application number: EP16734550.3A
Authority: EP
Inventors: André HAMMERER
Original assignee: Julius Blum GmbH
Current assignee: Julius Blum GmbH
Priority date: 2015-06-18
Filing date: 2016-05-17
Publication date: 2018-04-25
Anticipated expiration: 2036-05-17
Also published as: US20180087307A1; CN107750297B; AT517377A1; ES2767325T3; JP2018522151A; SI3310982T1; AT517377B1; US10458168B2; CN107750297A; WO2016201462A1; EP3310982B1; JP6611828B2

Abstract

The invention relates to a furniture hinge (4), comprising: a first hinge part (5) for fastening to a furniture body (2), a second hinge part (9) having a hinge cup (9a) for fastening to a movably supported furniture part (3), at least one joint axis (G), by means of which the first hinge part (5) and the second hinge part (9) are articulated to each other, a spring device (16), by means of which the furniture hinge (4) can be moved into a completely closed position and/or a completely open position from a specified angular position onward, wherein the spring device (16) is supported by means of an end region on a support part (15) inserted in the hinge cup (9a), a convex control cam (21), which interacts with the spring device (16) from the specified angular position to the completely closed position and/or completely open position, a pressure piece (17) having a counter contour (40), which counter contour can be pressed against the control cam (21) by means of the spring device (16), wherein the counter contour (40) of the pressure piece (17) has a concave region at least in some segments, which concave region is complementary to the convex control cam (21), wherein the support part (15) has a cavity (19) for accommodating the spring device (16).

Description

hinge

The present invention relates to a furniture hinge comprising:

a first hinge part for attachment to a furniture body,

a second hinge part with a hinge pot for attachment to a movably mounted furniture part,

at least one articulation axis via which the first hinge part and the second hinge part are hinged together,

a spring device, by means of which the furniture hinge can be moved from a predetermined angular position into a complete closed position and / or into a complete open position, wherein the spring device is supported with an end region on a bearing part inserted in the hinge cup,

a convex control cam, which cooperates with the spring device at the predetermined angular position up to the complete closed position and / or full open position,

- A pressure piece with a mating contour, which is pressed by the spring device against the control cam, wherein the mating contour of the pressure piece at least partially has a concave portion which is complementary to the convex cam.

In DE 30 40 287 A1 discloses a furniture hinge is disclosed with a hinge cup, in which a coil spring and a loaded by the coil spring pressure piece are mounted. The spring-loaded pressure piece acts together with a convex control cam of a control member, so that the hinge cup can be pressed together with the associated furniture part in the full closed position and / or full open position. The pressure piece has to bear against the control cam on a wedge-shaped tip, which is significantly burdened by the force of the spring device. Due to the small contact surface between the pressure piece and the cam contact point contacts with high surface pressure, which cause premature wear of these components and limit the force of the spring device. In addition, the movement behavior of the furniture hinge, especially in a change of direction of the movable furniture part, little satisfactory. Furthermore the hinge cup must be provided with a longitudinal bore, so that the pressure piece and the spring device can be arranged in the hinge cup. The hinge cup is thus a special construction, so that the production in large quantities is relatively uneconomical.

In the US 5,655,261 a furniture hinge is shown with a hinge pot, which is hingedly connected via a hinge axis with a door-side stop member 18. On the door-side stop member biased by a coil spring pressure piece is arranged, which presses against a control cam of the hinge axis. The concave counter contour of the pressure piece acts together with a convex portion of the control cam, so that a high torque is transferable. By arranged on the door-side stop member pressure piece a relatively large space is required. Object of the present invention is therefore to provide a furniture hinge of the type mentioned above while avoiding the above disadvantages.

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

According to the invention it is thus provided that the bearing part has a cavity for receiving the spring device. In this way results in a very compact and visually inconspicuous arrangement of the spring device in the hinge cup using standard hinge pans.

The control cam and the mating contour of the pressure part have at least partially complementary contours or a gegengleiche shape, so that the control cam and the mating contour partially abut each other flat. In this way, the forces are distributed over a larger area, with point or line contacts are avoided with high pressure. The control cam and the mating contour of the pressure member are at least in a middle position of the furniture hinge, which in the mounted state of the furniture hinge corresponds approximately to the half-open position of the movably mounted furniture part, to each other. In particular, it can be provided that the convex cam and the concave counter-contour of the pressure member formed in a central pivoting range of the furniture hinge between the two predetermined angular positions (ie in a lying between the respective Selbstanzugswinkeln the furniture hinge pivot area) abut each other flat.

In this way, it is not absolutely necessary that the control cam and the pressure member are each formed of highly wear-resistant metal, but rather an education of these components made of plastic and thus a more economical production of the furniture hinge is possible.

Further details and advantages of the present invention will be explained with reference to the following description of the figures. 1 shows a piece of furniture with a movable furniture part, which is over

Furniture hinges is pivotally mounted relative to a furniture body,

2 a furniture hinge in an exploded view,

3a-3d the closing operation of a furniture hinge in time sequences, Fig. 4a, 4b possible arrangements of the spring device and the

Damping device on a furniture hinge according to FIG. 2 and the furniture hinge with a switch for deactivation or for adjustable limitation of a damping performance of the damping device in a perspective view,

Fig. 5a, 5b, 5c, the furniture hinge in a cross section and two

Detailed views with the switch in two different positions, 6a, 6b, 6c a detailed view of the furniture hinge in a cross section, a perspective view of the switch and the furniture hinge in a partial exploded view.

Fig. 1 shows a furniture 1 with a movable furniture part 3, which is mounted on furniture hinges 4 pivotally relative to a furniture body 2. The furniture hinges 4 are formed as wide-angle hinges with at least five, preferably at least seven, hinge axes, so that the movable furniture part 3 can assume a maximum opening angle of at least 150 °, preferably at least 170 °, relative to the end face of the furniture body 2.

Fig. 2 shows an embodiment of a designed as a wide-angle hinge furniture hinge 4 in an exploded view. The furniture hinge 4 has a plurality of hinge parts 5, 6, 7, 8, 9, 10, which are hinged together in the figure shown on seven hinge axes A, B, C, D, E, F, G. These hinge parts 5, 6, 7, 8, 9, 10 may each have a U-shaped section in cross-section. The hinge part 5 is designed as a hinge arm 5a, which can be snapped on a to the furniture body 2 to be fastened (and not shown here) base plate and adjustable by an adjusting 1 1 in the longitudinal direction of the base plate (ie in the depth direction of the furniture body 2). Another hinge part 6 is formed as an intermediate piece 6a, which is connected via at least one hinge part 10 in the form of a pivotable lever with the hinge arm 5a. The intermediate piece 6a is movably coupled with a hinge movement, so that the movable furniture part 3 is pivoted not only relative to the furniture body 2 by a combined rotary and sliding movement, but also increases the distance to the furniture body 2 when opening. A further hinge part 7 in the form of a first articulated lever 7a is pivotally connected to the intermediate piece 6a via the articulation axis D, the other end of the first articulated lever 7a is connected via the articulation axis E to a further hinge part 8 in the form of the second articulated lever 8a. The second articulated lever 8a is articulated via the hinge axis G with a hinge part 9 designed as a hinge cup 9a. On the hinge axis G, a pin 24 is mounted with a control cam 20 mounted thereon, on which a control cam 21 is formed. The convex cam 21 forms a different radial distance relative to the hinge axis G from. For rotationally fixed mounting of the control cam 20 on the articulated lever 8a, a bolt 22 is provided, so that the control cam 20 against rotation on the articulated lever 8a can be arranged. The hinge cup 9a has a flange 13 with openings 14, which are provided for the passage of einzudrehenden on the movable furniture part 3 screws. On the hinge axis F, a further pin 23 is mounted on which a in the inner cavity 12 of the hinge cup 9a inserted bearing member 15 is attached. The bearing part 15 has a cavity 19 for receiving a spring device 16, which is preferably designed as a helical spring 16a in the form of a compression spring. The helical spring 16a surrounds a shaft 18 of a pressure piece 17, which can be pressed against the control cam 21 by the force of the helical spring 16a. In mounting position, therefore, the bearing part 15 is completely accommodated in the inner cavity 12 of the hinge cup 9a, wherein the coil spring 16a is mounted horizontally in the hinge cup 9a and arranged substantially parallel to a bottom 32 of the hinge cup 9a. The hinge cup 9a, together with the coil spring 16a mounted therein, can be arranged completely within a single cylindrical bore of the movable furniture part 3, resulting in a very compact and visually inconspicuous arrangement using standard hinge cups 9a.

According to one embodiment, the effective direction of the helical spring 16a extends in the mounting position of the furniture hinge 4 substantially perpendicular to a longitudinal axis of the bore of the movable furniture part 3, in which the hinge cup 9a is retractable. The bearing of the coil spring 16a within the inner cavity 12 of the hinge cup 9a has the further advantage that other existing space within the cross-sectionally U-shaped hinge parts 5, 6, 7, 9, 10 for the arrangement of additional functional units, such as a damping device 25 for damping a hinge movement and / or an electric drive for driving the furniture hinge 4 can be provided.

Fig. 3a-3d show the timing of the closing operation of the furniture hinge 4, which is designed as a so-called zero-entry hinge. This means that an associated with the hinge cup 9a furniture part 3 are opened so far can that the movable furniture part 3 in the full open position, the removal of movable in the furniture body 2 mounted inside extensions with maximum width over the entire pull-out path does not hinder. The furniture hinge 4 has a plurality of hinge parts 5, 6, 7, 8, 9, 10, which are connected by seven hinge axes A, B, C, D, E, F, G (Fig. 2) hinged together and wherein for damping a Hinge movement, a damping device 25, preferably a hydraulic linear damper, in which formed as a hinge lever 8a hinge part 8 is integrated. This can be done, for example, such that the articulated lever 8a has a substantially U-shaped section in cross section and that the damping device 25 is received within this U-shaped portion. The damping device 25 comprises a housing 26 in the form of a cylinder, in which a piston 27 is received with a piston rod 28. To return the damping device 25 in an initial position, a return spring 30 arranged in the housing 26 is provided in the form of a compression spring, which is supported on the one hand on the piston 27 and on the other hand on the housing 26. The piston rod 28 is connected to the hinge part 8 via a bearing 31 (FIG. 3d). The spring device 16, by means of which the furniture hinge 4 can be moved from a predetermined angular position into a complete closed position and / or into a complete open position, is mounted completely in the inner cavity 12 (FIG. 2) of the hinge cup 9a. The spring device 16 has in the illustrated embodiment at least one coil spring 16a, preferably a compression spring, on which the shaft 18 which is integrally formed together with the pressure piece 17, surrounds. The displaceably mounted pressure piece 17 is thus pressed by the force of the coil spring 16a against the control cam 21 of the control cam 20, wherein the control cam 20 is coupled with a hinge movement to the hinge axis G rotatably mounted and by the bolt 22 against rotation with the hinge part 8 is connected ,

According to Fig. 3a, the furniture hinge 4 is in a fully open position, so that connected to the hinge cup 9a movable furniture part 3 (Fig. 1) and a maximum open position of about 170 ° relative to a front side of the furniture body 2 can take. Fig. 3b shows a further closed position of the furniture hinge 4, wherein the damping device 25 is rotated together with the control cam 21 synchronously about the hinge axis G and wherein through the Cooperation of the cam 21 with the voltage applied to the control cam 21 counter-contour 40 of the pressure piece 17 is still no force of the coil spring 16a on the furniture hinge 4 is effective. The mating contour 40 of the pressure piece 17 has, at least in sections, a concave region which is designed to be complementary to the convex control curve 21. Thus, the control cam 21 and the mating contour 40 have a counter-identical shape, so that they rest against one another in sections. In this way, the forces occurring are distributed over a larger area, so that point or line contacts avoided with high pressing force and consequently the risk of premature wear of these components is reduced. The cam 21 and the mating contour 40 are at least in a middle position of the furniture hinge 4, which corresponds to the assembled state of the half-open position of the movable furniture part 3, to each other.

Fig. 3c, however, shows a more closed position, in which the force of the coil spring 16a begins. In the relative position of the furniture hinge 4 shown, namely, the coil spring 16a can relax by the interaction of the control cam 21 with the corresponding mating contour 40 of the pressure piece 17, so that the pressure piece 17 pushed further in the direction of joint axis G and thereby the furniture hinge 4 in the full closed position shown in FIG 3d presses. For this hinge movement to take place in a damped manner, an inwardly projecting projection 29 is provided on the hinge part 7, which presses the housing 26 of the damping device 25 starting from FIG. 3c relative to the axially immovable piston 27, so that the movement of the housing 26 relative to the piston 27 against the Resistance of a damping fluid in the housing 26 and thus the movement of the furniture hinge 4 is braked in the full closed position. The projection 29 of the hinge part 8, on which the housing 26 of the damping device 25 can be supported, is preferably designed as an embossment pointing toward the housing 26 and produced by pressure forming.

Fig. 4a shows possible arrangements of the spring device 16 and the damping device 25 on a furniture hinge 4 of FIG. 2. According to a first embodiment, the spring device 16 for moving the furniture hinge 4 in the fully open position and / or closed position, for example in or Hinge part 5 formed on the hinge arm 5a are supported while the damping device 25 is arranged for damping a hinge movement on or in the rotatably mounted lever 10, in which case the control curve 21 is rotatable about the hinge axis A. According to a second embodiment, the spring device 16 can be arranged in or on the lever 10, while the damping device 25 is mounted on or in the formed as an intermediate piece 6a hinge part 6, wherein the control cam 21 should be arranged rotatably about the hinge axis B. Following this scheme, the spring device 16 and the damping device 25 can also be mounted in the first articulated lever 7a, in the second articulated lever 8a and in the hinge 9a formed as a hinge part 9, wherein the control cam 21 then at that hinge axis A, B, C, D, E. , F, G would be rotatable, which those hinge parts 5, 6, 7, 8, 9, 10 pivotally connected to each other, on which the spring device 16 and mounted on a movable hinge part damping device 25 are mounted.

Instead of a damping device 25 in the form of a linear damper with the housing 26, the piston 27 and the piston rod 28, of course, rotary dampers can be used. Rotary damper usually have a rotor which is rotatably mounted in a filled with a viscous fluid housing. Upon rotation of the rotor, a corresponding braking torque is generated. About a led out of the housing shaft with a pinion, the interaction with a rack or a toothed segment is possible. The housing of the rotary damper can therefore be mounted on the movably mounted hinge part 8, wherein the pinion mounted on the shaft can be driven by a displaceably mounted toothed rack. A free end of the rack is then acted upon by the predetermined angular position of the furniture hinge 4 to the full closed position and / or open position shown in Fig. 3a-3d projection 29, whereby the pinion of the rotary damper is driven.

4b shows the furniture hinge 4 in a perspective view from the front. On one of the hinge parts 5, 6, 7, 8, 9, 10 - preferably formed on the hinged part 8 articulated lever 8a, which is connected via the hinge axis G with the hinge cup 9a - is a operated by a person switch 33 with a first switching position and arranged with at least one second switching position, wherein in the first switching position of the switch 33, a damping power of the damping device 25 is deactivated or limited and wherein in the second switching position of the switch 33, the damping power of the damping device 25 is activated. It is preferably provided that the switch 33 is arranged on that movable hinge part 6, 7, 8, 9, 10, on which the damping device 25 is also mounted. In the illustrated embodiment, the damping device 25 is mounted on or in that hinge part 8, which is connected via the hinge axis G directly to the hinge cup 9a. The deactivation or adjustable limitation of the damping performance of the damping device 25 is in fact advantageous when the movable furniture part 3 is pivotally connected to the furniture body 2 via two or more furniture hinges 4. Namely, if all the furniture hinges 4 have a predetermined damping performance, then the total attenuation could be too strong, so that the furniture part 3 stops in an undesired open position and can not be properly closed. By the switch 33, therefore, for example, the damping performance of a first furniture hinge 4 can be deactivated or limited, while the damping performance of a second furniture hinge 4 is activated. In this way, the total damping performance of two or more furniture hinges 4 can be variably adjusted to the size and weight of the movable furniture part 3. In the illustrated embodiment, the switch 33 in the direction of the double arrow 34 shown transversely, preferably substantially perpendicular, movably mounted to a main longitudinal axis of the hinge part 8. The switch 33 is accessible from the outside for manual or tool-operated operation.

Fig. 5a shows the furniture hinge 4 in a cross section, wherein the damping device 25 are integrated in the hinge lever 8a and the spring device 16 in the hinge cup 9a, wherein the pivotal position of the damping device 25 with a movement of the control cam 21, at which acted upon by the spring device 16 pressure piece 17 is applied, motion coupled. On the articulated lever 8a, a guide member 37 is fixed, in which the housing 26 of the damping device 25 is slidably mounted. FIG. 5b shows the first position of the switch 33, in which the damping power of the damping device 25 is deactivated or limited. For this purpose, the switch 33 has a stop 35, which cooperates in the figure shown with a formed on the housing 26 of the damping device 25 counter-stop 36, so that caused by the return spring 30 extending movement of the housing 26 is inhibited in the direction of the projection 29 of the hinge lever 7a. During the closing movement of the furniture hinge 4, therefore, the projection 29 of the articulated lever 7a can not contact the housing 26, so that, consequently, there is also no relative movement between the housing 26 and the piston 27 and thus no damping power is generated. Of course, it is also possible, by a further switching position of the switch 33, the extension movement of the housing 26 relative to the piston 27 to limit adjustable so that the housing 26 can extend over a partial path of the maximum stroke. The projection 29 can then repress the housing 26 via this reduced partial path, so that a limited damping power can be generated. Starting from the first position of the switch 33 according to FIG. 5b, the switch 33 can be moved in the direction of the indicated arrow 34 into the second position according to FIG. 5c, in which the damping effect of the damping device 25 is activated. By an adjustment of the switch 33 namely the stop 35 of the switch 33 and the counter-stop 36 of the housing 36 can be displaced relative to each other, so that the stop 35 no longer hampers the extension movement of the housing 26. The housing 26 can thus fully extend by the force of the return spring 30, so that the projection 29 during the closing movement of the furniture hinge 4, the housing 29 can push over the maximum stroke, whereby a maximum damping power is generated. For captive mounting of the switch 33 on the furniture hinge 4 snapper 38 are provided.

6a shows the damping device 25 integrated in the articulated lever 8a, wherein the piston rod 28 of the linear damper is firmly connected to the guide element 37, ie that the piston rod 28 is arranged immovably in the axial direction. The switch 33 is in the second switching position, so that the stop 38 of the switch 33 and the counter-stop 36 of the housing 26 of the damping device 25 do not cooperate and consequently a complete extension of the housing 26 by the force of the return spring 30 is possible. The housing 26 is impressed by the projection 29 formed on the hinge lever 7a over the entire stroke length, so that the damping power is activated.

Fig. 6b shows a perspective view of the switch 33 from below. For attachment to the furniture hinge 4 resilient snapper 38 are provided, the stop 35 may in the first switching position in which the damping performance of the damping device 25 is disabled or limited, cooperating with the housing 26 arranged counter-stop 36. About an operating portion 39, the switch 33 can be adjusted either manually or with a tool between the at least two switching positions.

Fig. 6c shows the furniture hinge 4 in a partially exploded view. The housing 26 of the damping device 25 with the counter-stop 36 is mounted displaceably in the guide element 37, the guide element 37 is supported via the bearing 31 on the articulated lever 8a. The led out of the housing 26 end of the piston rod 28 is supported on the guide member 37 from. The snapper 38 of the switch 33 engage behind the guide member 37 so that the switch 33 is fixed to the furniture hinge 4 and the operating portion 39 of the switch 33 allows actuation by a person from the outside.

Claims

claims

1 . Furniture hinge (4), comprising:

- A first hinge part (5) for attachment to a furniture body (2),

a second hinge part (9) with a hinge cup (9a) for attachment to a movably mounted furniture part (3),

- At least one hinge axis (G), via which the first hinge part (5) and the second hinge part (9) are hinged together,

- A spring device (16) through which the furniture hinge (4) is movable from a predetermined angular position in a full closed position and / or in a full open position, wherein the spring device (16) with an end portion on a hinge cup (9 a) used Bearing part (15) is supported,

- A convex cam (21) which cooperates with the spring device (16) at the predetermined angular position up to the full closed position and / or full open position,

- A pressure piece (17) having a mating contour (40) which by the spring device (16) against the control cam (21) can be pressed, wherein the mating contour (40) of the pressure piece (17) at least partially has a concave portion which complementary to convex cam (21) is formed,

characterized in that the bearing part (15) has a cavity (19) for receiving the spring device (16).

2. Furniture hinge according to claim 1, characterized in that the control cam (21) and the mating contour (40) at least in a middle position of the furniture hinge (4), which in the assembled state of the furniture hinge (4) of the half-open position of the movably mounted furniture part (4). 3), abut each other.

3. Furniture hinge according to claim 1 or 2, characterized in that the control cam (21) is movably coupled with a hinge movement and on the hinge axis (G) of the furniture hinge (4) is rotatably mounted.

4. Furniture hinge according to one of claims 1 to 3, characterized in that the first hinge part (5) and the second hinge part (9) via at least five hinge axes (A, B, C, D, E, F, G) hinged together are.

5. Furniture hinge according to one of claims 1 to 4, characterized in that the spring device (16) has at least one helical spring (16a), preferably at least one compression spring.

6. Furniture hinge according to claim 5, characterized in that the helical spring (16 a) lying in the hinge cup (9 a) is mounted and parallel to a bottom (32) of the hinge cup (9 a) is arranged.

7. Furniture hinge according to claim 5 or 6, characterized in that the hinge cup (9 a) together with the coil spring (16 a) mounted therein completely within a cylindrical bore of a furniture part (3) can be arranged.

8. Furniture hinge according to one of claims 5 to 7, characterized in that the pressure piece (17) is connected to a shaft (18), wherein the helical spring (16a) surrounds the shaft (18) at least in sections.

9. Furniture hinge according to one of claims 1 to 8, characterized in that the furniture hinge (4) has a damping device (25) for damping a hinge movement.

10. Furniture hinge according to claim 9, characterized in that the damping device (25) is mounted on or in a movably mounted hinge part (8) which is pivotally connected to the hinge cup (9 a), wherein the damping device (25) during a movement the control cam (21) moves.

1 1. Furniture hinge according to claim 9 or 10, characterized in that the damping device (25) comprises a linear damper with a housing (26), in which a piston (27) with a piston rod (28) is accommodated, wherein the piston rod (28) at the predetermined angular position up to the full closed position and / or full open position on a hinge part (8) and the housing (26) on a further hinge part (7) of the furniture hinge (4) can be supported.

12. Furniture hinge according to claim 1 1, characterized in that the piston rod (28) or the housing (26) of the damping device (25) at the predetermined angular position up to the full closed position and / or full open position with one on a hinge part (7) arranged or formed projection (29), preferably an embossing, cooperates.

3. Furniture hinge according to one of claims 1 to 12, characterized in that the furniture hinge (4) has a by a person to be actuated switch (33) with a first switching position and with at least a second switching position, wherein in the first switching position of the switch ( 33) a damping performance of the damping device (25) is deactivated or limited and wherein in the second switching position of the switch (33) the damping power of the damping device (25) is activated.

4. Furniture hinge according to claim 13, characterized in that the switch (33) is movably mounted on that hinge part (8), on which also the damping device (25) is mounted, wherein it is preferably provided that the switch (33) transversely, preferably substantially perpendicular, is movably mounted to a main longitudinal axis of the hinge part (8).

5. Furniture hinge according to one of claims 1 to 14, characterized in that the bearing part (15) is completely received in the mounting position in an inner cavity (12) of the hinge cup (9 a).