Furniture Hinge

The present invention pertains to a furniture hinge, comprising:

-a first hinge part for attachment to a furniture body,

-a second hinge part for attachment to a movably mounted furniture part,

-at least one hinge axis, over which the first and second hinge members are connected to one another in an articulated manner hinge-divide-hurry,

-a spring device, as from a predetermined angular position in a full closed position through which the furniture hinge and/or into a fully open position,

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

-a pressure member with a counter-contour, which can be pressed against the control cam by the spring device.

In DE disclosed is a furniture hinge with a hinge casing 30 40,287 A1, in which a coil spring and a loaded pressure piece are supported by the coil spring. The spring-loaded pressure piece interacts here with a convex control cam of a control member together, so that the hinge cup is closed together with the associated furniture part can be pressed into the fully closed position and/or fully open position. The pressure piece has a wedge-shaped tip on to bear against the control cam, which is loaded by the force of the spring device considerably. Their small contact surface between the thrust piece and the control cam with high surface pressure on point contacts enter, which bring about premature wear of these components and the force of the spring device limit. Also the movement behavior is of the furniture hinge, in particular whenever there is a change in direction of the movable furniture part and which, far from satisfactory.

It is therefore the task of the present invention, a furniture hinge of the type named above genus while avoiding the above disadvantages shall be indicated. In particular also for high forces or is to the furniture hinge. Torques of the spring device be suitable.

These is solved according to the invention by the features of claim 1. Further advantageous configurations are specified in the dependent dependent claims of the furniture hinge.

Under of the invention is therefore provided, at least in sections has a concave portion that the counter-contour of the pressure piece, which is formed complementary to the convex cam.

Therefore the control cam face of the pressure part and the counter-contour complementary to one another at least in sections or a matching form on contours, so that the control cam and the counter-contour in sections lie flat against one another. The occurring forces are distributed to a larger area in this way, wherein point or line contacts are avoided with high pressing force.

The control cam and the counter-contour at least in a central position of the furniture hinge here lie of the pressure part, which corresponds to approximately to the half-open position of the furniture hinge in the assembled condition of the furniture part and which movably mounted, each other at. In particular, the device can be provided that the convex control cam and to complementarily shaped concave counter-contour of the pressure part between the two predetermined angular positions in a central pivot range of the furniture hinge (i.e. in a pivot area lying between the respective self suit angles of the furniture hinge) rest flat against one another.

In this way it is not imperative that the control cam and the pressing member are formed in each case of high-wear-resistant metal is made of plastic and therefore a more efficient training rather a production of the furniture hinge possible these components.

Additional details and advantages of the present invention are explained by means of the following description of the figures. Indeed or show:

Fig. 1

Fig. 2

Fig. 3a -3d

Fig. 4a, 4b

Fig. 5a, 5b, 5c

Fig. 6a, 6b, 6c

a piece of furniture having a movable furniture part, which is pivotable relative to a furniture body mounted on furniture hinges,

a furniture hinge in an exploded view,

the closing operation of a furniture hinge at time sequences, possible arrangements of the spring device and the damping device on a furniture hinge according to a switch for deactivation or 2 as well as the furniture hinge Fig. for adjustably limiting a absorbing achievement the damping device in a perspective view,

the furniture hinge in a cross-section with the switch in two different switching positions and two detail opinions,

a detail view of the furniture hinge in a cross section, a perspective view in a partial exploded view of the switch as well as the furniture hinge.

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

Fig. 2 shows an embodiment of a furniture hinge 4 in an exploded view as Wide-angle hinge formed. The Furniture hinge 4 has several hinge parts 5, 6, 7, 8, 9, 10 on, in the shown Figure over seven axes of articulation A, B, carbon, D, E, F, are connected to one another in an articulated manner G. This hinge parts 5, 6, 7, 8, 9, 10 can have a U-shaped section in cross-section in each case. The hinge part 5a carried out as a hinge arm 5 is, on a 2 to be fastened to the furniture body by an adjusting wheel (and not shown here) in the longitudinal direction of the base plate 11 and adapted to be snap-mounted base plate (that is, in the depth direction of the furniture body 2) is adjustable mounted. Another hinge part 6 is as

"

0

V

Intermediate piece 6a formed, 10 in the form of a pivotable lever which via at least one hinge part 5a is connected with the hinge arm. The intermediate piece is coupled in terms of movement with a hinging 6a, so that the movable furniture part 3 by a combined pivoting and sliding motion relative to the furniture body 2 is pivoted not only increased, but also the distance from the furniture body 2 upon opening. With the intermediate piece 7 in the form of a first articulated lever 6a is a further hinge part 7a beyond the articulated spindle D pivotally connected, the other end of the first articulated lever 7a is above the hinge axis 8 in the form of second articulated lever with a further hinge part 8a in E compound. The second articulated lever 8a is on the hinge axis 9 hingedly connected with a hinge part 9a formed as hinge casing G. Located on the hinge axis 24 is a pin 20 mounted with a control cam mounted thereon G, 21 is formed to which a control cam. The convex relative to the hinge axis 21 forms a different radial distance from G control cam. Zur non-rotatable mounting of the control cam 22 is provided on the hinge lever 8a a bolt 20, so that the control cam 8a against twisting on the articulated lever 20 can be arranged. The Hinge cup 13 with openings 9a has a flange 14 on, which are provided for the passage of screws to be screwed to the movable furniture part 3. A further pin 23 mounted at the hinge axis is F, on which a fixed bearing part 9a of the hinge cup 12 is inserted in the internal cavity 15. The bearing part 15 has a cavity 19 for receiving a spring device 16 on, which preferably is formed as a helical spring 16a in the form of a compression spring. The coil spring 17 surrounds a shank 18 of a pressure piece 16a, 16a which can be pressed against the control cam by the force of the coil spring 21. In fitted position is therefore the bearing part 9a received completely in the internal cavity 12 of the hinge cup 15, wherein the helical spring lying in the hinge casing 16a substantially parallel to a floor mounted and 9a 9a of the hinge cup 32 is disposed. The Hinge cup 16a 9a is entirely within a single cylindrical coil spring mounted therein, together with the bore of the movable furniture part and which 3 can be arranged, whereby a very compact and optically inconspicuous Arrangement using standard hinge pots have yields 9a.

Under an embodiment the effective direction of the helical spring 4 in the assembled position of the furniture hinge 16a substantially perpendicular to a longitudinal axis of the bore of the movable furniture part and which 3, in which the hinge casing 9a can be lowered. The storage of the coil spring 12 can be provided within the inner cavity 9a of the hinge cup 16a has moreover, the advantage that other existing forming chambers 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 hinging and/or of an electric drive for driving the furniture hinge 4.

Fig. 3a -3d show the correct timing, the closing operation of said furniture hinge 4, which is formed as a so-called zero- [...]. This means that a with the hinge casing 3 can be opened sufficiently 9a connected furniture part that the movable furniture part 3 in the fully open position the withdrawal of maximum width over the entire 2 movably mounted in the furniture body does not hinder interior excerptsexcerpt way. The Furniture hinge 4 has several hinge parts 5, 6, 7, 8, 9, 10 on, by seven axes of articulation A, B, carbon, D, E, F, are connected to one another in an articulated manner and wherein (2 Fig.) G for damping a hinging a damping device 25, preferably a hydraulic linear damper, 8a formed as an articulated lever 8 is integrated in the hinge part.

This can be implemented, for example, in such a way that the articulated lever has a substantially U-shaped section 8a in cross-section and that the damping device is received within this U-shaped section 25. The damping device 25 comprises a housing 26 in the form of a cylinder, in which a piston 27 with a piston rod 28 is received. Zur resetting of the damping device 25 is in an initial position a return spring disposed in the housing 30 in the form of a compression spring provided 26, which is supported at one end at the piston 27 and, on the other hand, on the housing 26. The piston rod 31 via a bearing 28 (Fig. 3d) is connected with the hinge part 8. The Spring device 16, through which the furniture hinge 4 from a predetermined angular position in a full closed position and/or into a fully open position is completely within the interior void space 9a of the hinge cup 12 (2 Fig.) mounted. The 16 has in the shown embodiment, at least one helical spring 16a spring device, preferably a compression spring, on, which the shaft 18 is formed in one piece together with the pressure member 17 surrounds the,. The by the force of the coil spring 17 is therefore pressed displaceably mounted thrust piece 16a against the control cam 21 of the control cam 20, wherein said control cam is coupled with a hinging 20, rotatably mounted to the hinge axis and through the pin 22 is connected in a twist-proof manner to the hinge part 8 G.

Pursuant Fig. 3a is located in a fully open position the furniture hinge 4, so that a movable furniture part 9a connected with the hinge casing 3 also a maximum open position of about 170 ° (Fig. 1) relative to a front side of the furniture body 2 can assume. Fig. 3b 4 shows a further closed position of the furniture hinge, wherein the damping device 25 together with the control cam 21 synchronously about the hinge axis and wherein by the cooperation of the control cam 21 with the twisted G on the control cam 40 17 still no force of the helical spring 21 abutting counter-contour of the pressure piece 4 is effective on the furniture hinge 16a. The counter-contour of the pressure piece 17 has a concave portion on at least in sections 40, which is formed complementary to the convex control cam 21. Therefore the control cam 40 a matching form on face 21 and the counter-contour, so that they lie flat against one another in sections. The occurring forces are distributed to a larger area in this way, so that point or line contacts with high pressing force is avoided and, consequently, the risk of premature wear of these components reduces. The control cam 40 lie at least in a central position of the furniture hinge 21 and the counter-contour 4, which in the assembled condition of the half-open position of the movable furniture part and which corresponds to 3, each other at.

Fig. 3c shows, on the other hand, a further closed position, in which the force of the helical spring 16a is employed. In the depicted relative position of the furniture hinge 16a in other words, the coil spring can relax 4 by the cooperation of the control cam 40 21 with the corresponding counter-contour of the pressure piece 17, so that the pressure piece 17 further toward the full closed position and thereby pushed in the furniture hinge joint axis G 3d Fig. 4 presses in accordance with. For this hinging runs damped is an inwardly protruding projection 29 provided on the hinge part 7, the pushes the housing 26 of the damping device 27 25 starting from Fig. 3c relative to the axially immovable piston, so that the movement of the housing relative to the piston against the resistance of a 27 26 26 located in the housing 4 in the full closed position so that the movement of the furniture hinge absorption fluid and is braked.

The projection 29 of the hinged member at 8, on which the housing 26 of the damping device 25 can be supported is preferably provided as a form of an embossing produced by press forming and 26 facing to the housing.

Fig. 4a shows possible arrangements of the spring device 25 on a furniture hinge 16 and the damping device 4 according to a first embodiment can the spring device 16.2 Fig. Under 4 in the full open position and to move the furniture hinge/or closed position, for example, be stored in or on the hinge arm 5a formed hinge part 5, while the damping device 25 for damping a hinging 10 is arranged on or in the rotatably mounted lever, in which case the control cam is to be arranged rotatably about the axis of articulation A 21. Under a second embodiment, the spring device 10 can be arranged in or on the lever 16, while the damping device 25 is mounted on or in the hinge part 6a formed as intermediate piece 6, wherein the control cam 21 rotatable about the axis of articulation would be to arrange B. This Schema 25 16 and the damping device can further following the spring device in the first articulated lever 7a, 8a and 9a formed in the second articulated lever 9 are mounted in the hinge part as the hinge casing, wherein the control cam 21 then on that axis of articulation A, B, carbon, D, E, F, G rotatably locate would be, which those hinge parts 5, 6, 7, 8, 9, 10 pivotally connecting to each other, to which the spring device 25 are mounted on a movable hinge part 16 and the mounted damping device.

Instead of a damping device 25 in the form of a linear damper with the housing 26,27 and the piston rod 28 will, of course, rotational damper the piston are used. Rotational damper usually a rotor point on, with a viscous fluid filled housing is rotatable mounted in a. In a rotation of the rotor a corresponding braking torque is generated. Over a through the housing shaft with a pinion with a rack or a toothed segment the interaction is possible. Cabinet of said rotational damper can therefore be mounted on the movably mounted hinge part 8, wherein the rack pinion mounted on the shaft can be driven by a displaceably mounted. A free end of the rack is then at the predetermined angular position of the furniture hinge 4a towards the fully closed position and/or open position by in Fig. 3a -3d shown projection 29 adapted to be acted upon, whereby the pinion of said rotational damper can be driven.

Fig. 4b shows the furniture hinge 4 in a perspective view from the front. Set on one of the hinge parts 5, 6, 7, 8, 9, 10-8a 8 formed preferably on the articulated lever as a hinge section, with the hinge casing 9a is above the hinge axis is connected-a by a G operated switch 33 having a first switching position and with at least person a second switching position disposed, wherein in the first switching position of the switch and wherein the damping device is deactivated or limited absorbing achievement 33 a 25 33 25 in the second switching position of the switch is activated the absorbing achievement of the damping device. Preferably, provided that the switch 33 on that movable hinge part 6, 7, 8, 9, 10 is arranged, on which the damping device 25 is mounted. In the embodiment shown, the damping device 8 is mounted on or in that hinge part 25, which is connected directly to the hinge casing about the hinge axis G 9a. The deactivation or.

the damping device 25 is then advantageously adjustable limiting the absorbing achievement in other words, when the movable furniture part 3 over two or more furniture hinges 4 is pivotable connected with the furniture body 2. Would absorbing achievement fact all furniture hinges 4 have a predetermined, so the attenuation could be too strong as a whole, so that the furniture part 3 can be properly closed and not to stand still in an undesired open position. Through the switch 33 can be limited, for example, the 4 deactivated or absorbing achievement of a first furniture hinge therefore, while the 4 is activated absorbing achievement of a second furniture hinge. In this way the total absorbing achievement 4 to the size can of two or more furniture hinges on the weight of the movable furniture part and which variably be adapted and 3. In the embodiment shown, the switch 34 in the direction of the double arrow 33 is delineated transverse, preferably substantially perpendicular, to a main longitudinal axis of the hinged member at 8 movably mounted. The switch 33 is be actuated with a tool for manual or accessible from the exterior.

Fig. 5a shows the furniture hinge 4 in a cross-section, wherein the damping device 8a and 9a in the articulated lever 25 are integrated in the hinge casing 16 the spring device, the pivot position of the damping device 21 with a movement of the control cam 25,16 which is acted upon by the spring device rests on the pressure piece 17 is coupled for movement. Am articulated lever 37 is fixed a guide member 8a, in which the housing 26 of the damping device 25 is mounted slidably.

Fig. 5b the first position shows the switch 33, in which the 25 absorbing achievement the damping device is deactivated or limited. To this end 33 has a stop on the switch 35, the co-operates with a 25 on the housing 26 of the damping device in the shown Figure 36 counter-stop formed, so that a 30 caused by the return spring 26 in the direction of the projection 29 of the articulated lever extension movement of the housing 7a is inhibited. In the closing movement of the furniture hinge 7a the housing 29 of the articulated lever 4 can therefore not contact the projection 26, so that consequently, no relative movement takes place between the housing 26 and piston 27 and thus also no Generating absorbing achievement.

Of course, it is also possible, by a further switching position of the switch 26 33 27 adjustable to limit the extending movement of the housing relative to the piston, so that the housing can extend over a travel portion of the maximum stroke 26. The projection 26 on this reduced travel portion 29 can again biting then the housing, so that a limited absorbing achievement can be generated.

On the basis of the first position of the switch 33 is in the direction of the delineated 5b the switch 33 according to Fig. 34 arrow 5c movable to said second position according to Fig., in which the cushioning effect of the damping device 25 is enabled. By an adjustment of the switch 33 and 35 of the switch 33 are in other words the stop 36 of the housing 36 relative to each other can the counter-stop, so that the stop 26 no longer being hindered the extending movement of the housing 35. The housing 30 by the force of the return spring 26 can therefore extend completely, so that the projection 29 during the closing movement of the furniture hinge 29 on the maximum stroke can impress the housing 4, whereby maximum Generating absorption achievement. Zur captive retention of the switch 38 are provided on the furniture hinge 4 includes latches 33.

Fig. 6a shows the integrated damping device 8a in the articulated lever 25, wherein the piston rod 28 of the linear damper 37 to the guide element is connected fixedly, i.e. non-displaceable in the axial direction is arranged that the piston rod 28. The switch 33 is located in the second switching position, so that the stop 33 and the counter-stop 38 of the switch 36 of the housing 26 of the damping device 26 25 a complete extension of the housing and consequently not interacting by the force of the return spring 30 is possible. Cabinet 26 is over the entire stroke length by the projection formed on the hinge lever 29 depressible 7a, so that the is activated absorbing achievement.

Fig. 6b shows a perspective view from the bottom 33 of the switch. Zur 38 provided are resilient snap fastening to the furniture hinge 4, the stop 35 can in the first switching position, in which the 25 absorbing achievement the damping device is deactivated or limited, 36 cooperating with the counter-stop arranged on the housing 26. Over a actuating portion 33 39 either manually or with a tool the switch between the at least two switching positions can be adjusted.

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