Multi-articulated hinge and method for closing a multi-articulated hinge

Abstract

The invention relates to a multi-joint hinge (1) having a holding element (11) which can be fixed to a door leaf (21), which holding element can be pivoted via a joint mechanism to a maximum open position and a closed position relative to a housing (14) of the multi-joint hinge (1), wherein at least one damper (15) as a linear damper is provided, which has a damper piston guided by a piston rod (154) in a damper housing (152), and on which damper housing (152) a control cam (153) for actuating the damper (15) is mounted. Wherein a cam guide (131) is supported on the multi-joint hinge (1), wherein the cam guide (131) and the control cam (153) for actuating the damper (15) travel opposite to one another along a contact surface (K) at least over a damping section (A) of the pivoting range, which contact surface extends at an angle to the actuation direction of the damper (15), so that the movement of the holding element (11) towards the closed position can be slowed down by the damper (15) within the damping section (A) of the pivoting range. Furthermore, a method for closing a multi-joint hinge (1) is provided.

Description

Technical Field

[0001] The present invention relates to a multi-joint hinge comprising a retaining element fixable to a door leaf, the retaining element being pivotable relative to the housing of the multi-joint hinge to a maximum open position and a closed position via a joint mechanism, wherein at least one damper is provided, the damper being a linear damper having a damper piston guided by a piston rod within a damper housing, and a control cam for actuating the damper is mounted on the damper housing; the present invention also relates to a method for closing the multi-joint hinge. Background Technology

[0002] WO 2008 / 119647 A1 discloses a seven-joint hinge having a fixed fastening element, the hinge being pivotable relative to the fastening element via a joint mechanism comprising a plurality of levers connected to each other in a scissor-like manner. The joint mechanism includes a damper comprising a damper housing and a damper piston, the damper being rotatably supported on each of the levers of the seven-joint hinge on opposite sides to dampen the closing movement of the hinge.

[0003] The problems with existing multi-joint hinges are: installing dampers onto the hinges is labor-intensive, and the dampers may not function within the hinge's range of motion where damping is not required, which complicates the operation and increases the load on the dampers. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide an improved multi-joint hinge and an improved method for closing the multi-joint hinge.

[0005] The present invention solves this technical problem by using the multi-joint hinge according to claim 1 and the method according to claim 16.

[0006] According to the invention, a multi-joint hinge includes a retaining element fixable to a door leaf, the retaining element being pivotable relative to the hinge housing to a maximum open position and a closed position via a joint mechanism. At least one damper in the form of a linear damper is provided, the damper having a damper piston guided by a piston rod within a damper housing, and a control cam for actuating the damper is mounted on the damper housing. Furthermore, a cam guide is supported on the multi-joint hinge, wherein the cam guide and the control cam for actuating the damper travel relative to each other along a contact surface at least in the damping section of the pivoting range. This contact surface extends at an angle relative to the actuation direction of the damper, such that the movement of the retaining element to the closed position can be braked by the damper within the damping section of the pivoting range. The interaction between the cam guide and the control cam at the contact surface enables particularly effective deceleration of the retaining element's movement, thereby allowing the shape of the cam guide and the control cam to adjust the initiation of damping and the magnitude of the damping force according to the closed position.

[0007] When the damper is actuated, the position of the contact surface on the control cam and cam guide—preferably at an angle relative to the actuation direction of the damper—varies along the control cam and cam guide by more than 2 mm, preferably between 3 mm and 12 mm, and most preferably between 4 and 8 mm. This makes the actuation of the damper particularly reliable.

[0008] When the control cam is brought into contact with the cam guide, the damper is actuated, specifically compressed, as the retaining element moves. During the rolling or sliding motion of the control cam along the cam guide, the contact point between the control cam and the cam guide also shifts perpendicular to the direction of movement of the damper, such that the corresponding profiles of the control cam and the cam guide influence the movement of the damper. The control cam and / or the cam guide can be formed as a plane, convex, or concave surface to adjust the damping force accordingly based on the opening angle. Preferably, the damping stroke is substantially linear relative to the pivoting path when the retaining element pivots in the closing direction.

[0009] In the undamped section of the pivot range, which is located upstream of the damped section of the pivot range adjacent to the closed position in the closing direction, the retaining element is preferably able to move in the idle travel without the damper being actuated by the cam guide and the control cam. This allows for smooth movement of the retaining element. In the undamped section of the pivot range, i.e., during the idle travel, the control cam preferably contacts the joint of the joint mechanism, such as the cylindrical surface of the joint or a component supported on the joint. The joint can be formed, for example, as a bolt, wherein the bolt is preferably cylindrical at least in the area where the control cam contacts it, such that the control cam contacts the bolt during a portion of the movement of the retaining element between the maximum open and closed positions, thereby preventing the damper from being actuated in this area. This allows for the idle travel to be provided by simple means. The idle travel exists over the entire angular range of the control cam contacting the damper at the cylindrical surface of the joint or at a cylindrical component supported on the joint, because the damper is not compressed during the rotational movement of the damper relative to the cylindrical surface.

[0010] Preferably, the cam guide rests against the joint without clearance, such that the two contact surfaces—the bolt and the cam profile of the cam guide—are arranged close to each other. The cam guide and / or control cam are made of, for example, plastic. Alternatively, the control cam may also be integrally manufactured with the damper housing.

[0011] Alternatively, the cam guide may partially surround the bolt, in which case the cam guide includes a cylindrical outer surface in the idle area, which is arranged substantially concentrically with the bolt, such that the control cam abuts against the cam guide throughout the opening angle.

[0012] Multi-joint hinges are preferably seven-joint hinges, more preferably seven-joint hinges with four levers and seven joints. This makes multi-joint hinges particularly robust. The retaining element is rotatably supported, in particular, at a first joint on a first lever, which is rotatably supported at a second joint on a second lever, which is rotatably supported at a third joint on a housing that can be secured to the body of the furniture. Specifically, a cam guide is pivotally supported at the second joint. In a particularly preferred embodiment, the cam guide is formed such that the cam-shaped actuating surface of the cam guide (i.e., the cam profile of the cam guide) is arranged to directly abut the second joint. The cam guide is preferably secured in a recess or receiving portion on one of the levers of the joint mechanism.

[0013] In one embodiment of the joint mechanism, the retaining element is also preferably rotatably supported at a fourth joint on at least a third lever, which is rotatably supported at a fifth joint on at least a fourth lever, which is rotatably supported at a sixth joint on the housing, wherein the third lever is also rotatably supported on a second lever via a seventh joint. Furthermore, the second and third levers are hinged to each other.

[0014] A damper having a control cam, particularly a damper piston and / or piston rod or damper housing, is preferably held in a retainer on a first lever in a displaceable manner. Preferably, the damper is held within the retainer; more preferably, the retainer is held in a cavity formed by the first lever. In this arrangement, the damper piston is preferably supported on the wall of the retainer by a piston rod. The damper is preferably supported in the retainer in an anti-rotation manner. For this purpose, the damper may include a molded part of a damper control cam, or guide ribs may be included on the damper itself. In this case, the damper can be loosely held in a guide on or within the retainer, thus eliminating the need for additional connecting elements for mounting the damper, especially rotary bearings. The retainer is preferably fixedly arranged within the first lever, particularly by the retainer also including receiving portions for the first and / or second joints.

[0015] Alternatively, the piston rod of the damper can also abut against the retaining element at the joint rivet or bolt of the first joint.

[0016] In a preferred embodiment, the control cam is formed on a generally rectangular body with a cam profile, the body having a receiving portion, such as a cylindrical receiving portion, and one end of the damper housing is inserted into and fixed therein, for example by clamping. As a variation, the damper can also be rotated 180° such that the piston rod is inserted into the cylindrical receiving portion, and one end of the damper housing is fixed to the wall of the retainer or a first lever, or to a joint rivet or bolt fixed to a first joint on the retaining element. A guide surface, such as a web, can be formed on the outer surface of the molded body to linearly guide the damper within the retainer when it is compressed. The control cam and the damper housing are preferably formed as separate components and fixed to each other, particularly by force-fitting interlocking. Alternatively, the control cam can also be formed on the molded body constituting the damper housing, into which the damper piston is inserted.

[0017] In a preferred embodiment, the damper piston is displaceable against the surface of the retainer by means of a piston rod. The support surface of the retainer may be supported by a hinge joint. The damper may be a compression damper that applies a damping force when compressed but produces no damping force or only negligible damping force when extended to the extended position. The damper may include a spring that applies a biasing force to the piston and piston rod of the damper, causing them to enter the extended position. This ensures continuous contact between the piston rod and the support surface without the need for additional fasteners, such as snap-fit ​​connections. Alternatively, the damper may also be configured as a tension damper.

[0018] Particularly preferred is that the damper is designed as a linear damper in the shape of a fluid damper; however, it may alternatively be another type of damper or a gas spring.

[0019] Preferably, the damper is arranged in the region between the two joints of the first lever (i.e., between the first joint and the second joint) to optimally utilize the available space. The extension or compression of the linear damper preferably occurs between the first and second joints, wherein the piston rod and the damper housing are fully positioned between the two joints in all open angle positions. The orientation of the linear damper substantially corresponds to an imaginary line connecting the first and second joints. This connecting line forms an angle range of 0° to 12° with the orientation of the linear damper, or is parallel to and spaced apart from each other.

[0020] Due to the installation and form of the damper, it is constantly fixed between two points and no swivel joint is required.

[0021] Preferably, the cam guide and the control cam are guided in a direction parallel to the axis of the joint mechanism. The movement of the cam guide and the control cam in this direction is limited by the guide, for example by a stop or guide surface integrally formed with the cam guide and / or the control cam. Preferably, the cam guide includes a cam profile disposed between two guides, wherein the cam profile of the control cam is disposed between these guides. The cam guide has a maximum lateral range in a direction perpendicular to the travel direction of the cam guide and the control cam relative to each other, such that it is disposed between the guides. Preferably, the maximum lateral range of the cam profile at the control cam corresponds to the area between the two guides. This forked engagement of the control cam between the two guides provides axial guidance. Alternatively or additionally, the control cam may also include a forked profile. The control cam and / or the cam guide may optionally include a cam profile located between two skid-shaped sections.

[0022] Multi-jointed hinges can make the closing movement of furniture or household appliance doors more comfortable for the user. With the aid of a damper, the movement of the retaining element can be slowed, preferably at an angle of at least 20°, for example, within a pivot range of 0° to 35° relative to the maximum closed position of the retaining element relative to the housing. Optionally, the damper is activated as early as 50°, thus including a free travel from 50° to about 35° during which the damper is activated but does not yet provide any damping.

[0023] Specifically, the damper is substantially disposed within the first or second lever, allowing for a compact multi-joint hinge. For this purpose, the first lever may be configured to include a U-shaped cross-section substantially perpendicular to the damping direction and / or its longitudinal extension direction, within which the damper may be disposed. Preferably, the damper is held in a non-rotatable manner within a retainer. The retainer may largely cover the damper, but the degree of coverage may vary depending on the position of the damper. The damper and retainer are located within a cavity formed by the U-shaped first or second lever. In a variation, the first or second lever and the damper retainer may also be integrally formed.

[0024] The retaining element is preferably biased to a maximum open position and / or a maximum closed position by means of at least one accumulator, thereby assisting the movement of the retaining element toward at least one of the two end positions. Here, for this purpose, at least one third lever and / or at least one first lever may be biased against an adjacent lever, particularly by means of at least one accumulator.

[0025] The housing of the multi-joint hinge is particularly fixed or can be fixed to the body of furniture or household appliances, wherein the retaining element is preferably fixed to the door leaf of the furniture so as to easily dampen the closing movement of the door leaf before the door leaf reaches the closed position.

[0026] Here, the retaining element can be glued to the door leaf or fixed using fastening means (such as screws).

[0027] The present invention also includes a method for closing a multi-joint hinge, the multi-joint hinge including a retaining element fixable to a door leaf, the retaining element being pivotable relative to the housing of the multi-joint hinge to a maximum open position and a closed position via a joint mechanism, wherein at least one damper as a linear damper is provided, the damper having a damper piston guided by a piston rod within a damper housing, and a control cam for actuating the damper is mounted on the damper, the method comprising the following steps:

[0028] a) Pivot the retaining element of the multi-joint hinge from its maximum open position in the closing direction and move the control cam fixed to the damper along the joint designed as a bolt or a component supported on the joint, wherein, in the undamped section of the pivot range, the retaining element moves in the idle without actuating the damper. b) To further pivot the retaining element in the closing direction and to move the control cam along the cam profile of the cam guide arranged adjacent to the bolt, wherein the damper piston is displaced relative to the damper housing by the control cam and the cam guide; and c) As the control cam travels along the cam guide at the contact surface within the damped section of the pivot range, the holding element is further pivoted under the braking action of the damper until it reaches the closed position.

[0029] The method according to the invention enables particularly advantageous damping of the movement of multi-joint hinges using readily manufactured means, only within a predetermined closing range. Particularly preferred is the multi-joint hinge according to the invention.

[0030] Preferably, in step a), the control cam and / or damper housing travel along a component that has a substantially constant diameter in the plane of pivoting motion, or on which no relative movement occurs during pivoting. Alternatively, the control cam may be restricted by extending its motion against a retainer on a lever of the hinge. Attached Figure Description

[0031] The present invention will now be described in more detail with reference to exemplary embodiments and accompanying drawings. The drawings show: Figure 1 A cross-sectional view of the multi-joint hinge according to the invention in its fully closed position is shown. Figure 2 Show Figure 1 Isometric view of the hinge. Figure 3a and Figure 3b Show Figure 1 The figures shown are a side view and a cross-sectional view of the multi-joint hinge of the present invention in the fully open position. Figure 4 Show Figure 3a Isometric view, Figure 5 Show Figure 4 A cross-sectional view of a region. Figure 6 Show Figure 4 Another cross-sectional view of another part, Figure 7 Show Figure 1 A cross-sectional view of a multi-joint hinge, wherein the retaining element is positioned between its maximum open and maximum closed positions. Figure 8 Show Figure 1 A cross-sectional view of a multi-joint hinge, wherein the retaining element is in another position between the maximum open position and the maximum closed position. Figure 9 Show Figure 1 The exploded view of the multi-joint hinge shown is as follows. Figure 10 Showing with Figure 7 The corresponding side cross-sectional view of the multi-joint hinge. Figure 11 Showing with Figure 8 The corresponding side cross-sectional view of the multi-joint hinge. Figure 12 Show Figures 1 to 11 Multiple views of the control cam with a multi-joint hinge are shown. Figure 13 Show Figures 1 to 11 Multiple views of the cam guide with a multi-jointed hinge are shown, and Figure 14 The graph shows the damping stroke as a function of the opening angle. Detailed Implementation

[0032] Figure 1 Showing a side view, Figure 2 An isometric view of the multi-joint hinge 1 according to the invention in the closed position is shown. The multi-joint hinge 1 is formed herein as a seven-joint hinge and includes a retaining element 11 for fixing to a door leaf of furniture or household appliance; the retaining element is rotatably supported at a first joint 31 on a first lever 12 of the joint mechanism.

[0033] The first lever 12 is supported on the second lever 13 at the second joint 32. The second lever 13 is rotatably supported on the housing 14 at the third joint 35. The housing 14 is fixed to the body of the furniture, allowing the retaining element 11 to pivot relative to the housing 14 to a maximum open position and a maximum closed position. The retaining element 11 is also rotatably supported on at least the third lever 16 at the fourth joint 36. The third lever 16 is rotatably supported on at least the fourth lever 17 at the fifth joint 33. The fourth lever 17 is rotatably supported on the housing 14 at the sixth joint 37.

[0034] The third lever 16 is rotatably supported on the second lever 13 at the seventh joint 34. In this way, lever movement, preferably substantially achievable through two variable four-bar linkages, becomes possible. A damper 15 (here, a linear damper) is arranged inside the first lever 12; it is supported on the wall of the first lever 12 or on the retainer 122 in the region of the first joint 31, and includes a damper piston (not shown) and a damper housing 152. The damper piston is movable via a piston rod 154. The damper housing 152 includes a damper piston arranged within the damper housing 152 and a control cam 153 arranged on the damper housing 152, by means of which the movement of the retaining element 11 towards the closed position can be slowed by the damper 15. The control cam 153 is located at the end of the damper housing 152 opposite to the piston rod 154. To actuate the damper 15 via a control cam 153, the control cam 153 includes a cam profile 1531, on which a cam guide 131 is supported on a second lever 13; the cam guide includes a cam profile 1311 located between two optional guides 1312. The cam guide 131 and the control cam 153 contact each other at a contact surface K, which extends at an angle relative to the actuation direction of the damper 15. The contact surface K is the surface where the cam profile 1531 of the control cam 153 and the cam profile 1311 of the cam guide 131 abut against each other without clearance. In the closed position, the control cam 153 and the cam guide 131 have traveled relative to each other at the contact surface K.

[0035] The door leaf can be fixed in Figure 2 The front portion of the retaining element 11 shown is secured, for example, by using an adhesive or fastening means (e.g., a screw).

[0036] Figure 3a Show Figure 1 The side view of the multi-joint hinge 1 of the present invention in the fully open position. Figure 3b Show Figure 3a The cross-sectional view shows that the cam guide 131 is formed as a molded part and is rotatably supported on the second joint 32, specifically around the bolt 321. The cam guide 131 is fixedly fastened to the lever 13.

[0037] In the illustrated embodiment, the damper 15 is not actuated until it reaches the maximum open position, wherein the control cam 153 travels adjacent to the cam guide 131 along the second joint 32, specifically along the bolt 321 of the second joint 32, while the position of the damper housing 152 remains unchanged.

[0038] An optional third lever 16 is also provided with an optional accumulator 18; here, it includes a spring with an actuation profile, by means of which the spring can be actuated via a fourth lever 17. Figure 3b It can also be seen that the cam guide 131 (especially the cam profile 1311) fits tightly against the bolt 321 without gap.

[0039] Figure 4 Show Figure 3a An isometric view of the multi-jointed hinge 1. The first lever 12 essentially comprises a cavity perpendicular to its longitudinal axis. Figure 3b As shown, the damper 15 is almost entirely arranged within the first lever 12. The damper 15 is preferably housed within the cavity of the first lever 12.

[0040] Figure 5 Show Figure 4 A cross-sectional view of one region shows that the damper piston includes a piston rod 154 supported on the housing wall of the retainer 122.

[0041] like Figure 5 and Figure 6 As shown, when the retaining element 11 is in its maximum open position, the damper 15 is not actuated; instead, the control cam 153 only abuts against the cylindrical bolt 321 of the second joint 32, wherein the actual cam profile 1311 of the cam guide 131 does not contact the control cam 153 or the cam profile 1531 at this time.

[0042] Figure 7 Show Figure 1 A cross-sectional view of the multi-joint hinge 1, wherein the retaining element 11 is positioned between the maximum open position and the closed position. The retaining element 11 is moving toward the closed position. The control cam 153 and / or its cam profile 1531, for example at an angle of 50° before reaching the maximum closed position, first contacts the cam profile 1311 of the cam guide 131 during the movement of the retaining element 11, which causes the damper 15 to be actuated by compression. In order to actuate the damper 15, the cam profile 1531 then travels along the contact surface K on the cam profile 1311 within the damped section of the pivot range (in which the damper is actuated), which changes during the pivoting movement of the multi-joint hinge 1. In the inactive region of the damper, i.e., in the undamped section of the pivot range, the cam profile 1531 preferably travels along the optional guide 1312 ( Figure 7 (Only one of them is shown in the image) travels along the bolt 321 of the second joint 32. Figure 7 The damper 15 is shown in a partially actuated state, with the damper housing 152 depicted as having shifted along the piston rod 154 toward the first joint 31. The damper 15 is mounted in a retainer 122. The retainer 122 is in turn fixedly arranged in a cavity formed by the first lever 12.

[0043] Figure 8 Show Figure 1A cross-sectional view of the multi-joint hinge 1, wherein the retaining element 11 is in another position between the maximum open position and the closed position, and... Figure 7 In contrast, retaining element 11 is closer to the closed position. At this point, the control cam 153 (or cam profile 1531) has traveled further along the cam guide 131. For example... Figure 7 As shown, the cam guide 131 and the control cam 153 interact, wherein the position of the contact surface K on the cam guide 131 and the control cam 153 varies along the cam guide 131 and the control cam 153 by more than 2 mm during movement, preferably between 2 mm and 8 mm. This causes the damper 15 to be further actuated, so that the damper piston is further pushed into the damper housing 152 via the piston rod 154, thereby slowing down the movement of the retaining element 11.

[0044] Figure 9 Show Figure 1 An exploded view of the multi-joint hinge 1. It can be particularly seen here that the first lever 12 has a U-shaped cross-section and thus contains a cavity. A retainer 122 is inserted into this cavity, and the retainer in turn accommodates the damper 15. In this case, the retainer 122, like the first lever 12, is fastened to the first joint 31 and the second joint 32, and thus fixed relative to the first lever 12. The retainer 122 largely covers the damper 15, the degree of coverage depending on the position of the damper. The piston rod of the damper 15 abuts against the wall of the retainer 122. The assembly consisting of the damper 15 and the control cam 153 is mounted on the retainer 122 in a displaceable manner by means of a web 1534.

[0045] By means of an optional actuating element 19 on which an actuating cam is formed, the accumulator 18 may optionally apply a force in the closing direction and / or opening direction to the joint mechanism of the multi-joint hinge 1 via the actuating cam.

[0046] Figure 10 Showing with Figure 7 The corresponding side cross-sectional view of the multi-joint hinge 1 shows that the third lever 16 and the fourth lever 17 also pivot, which causes the accumulator 18 to be actuated. Figure 11 It also shows the relationship with Figure 8 The corresponding multi-joint hinge 1 is shown in a side cross-sectional view. Preferably, the movement of the retaining element 11 within the opening angle (i.e., the angle between the closed and open positions of the retaining element 11) can decelerate from 10° to 35° until it reaches the closed position. The orientation D of the damper 15 (i.e., the linear damper) substantially corresponds to the imaginary connecting line V between the first joint and the second joints 31 and 32. The connecting line V and the orientation D of the linear damper form an angle range α of 0° to 12° with each other, or are spaced parallel to each other.

[0047] Figure 12 Show Figures 1 to 11 Multiple views of the control cam 153 of the multi-jointed hinge 1. The control cam 153 is designed here as a separate component, comprising a generally cubic body 1533 on which a cam profile 1531 is formed. A cylindrical receiving portion 1532 is also formed in the body 1533, into which the damper housing 152 shown in the aforementioned figures is inserted. Web plates 1534 are arranged on the sides of the body 1533. The web plates 1534 serve to guide the damper housing 152 and reduce friction at the retainer 122. Furthermore, they prevent lateral forces that may adversely affect the damper 15.

[0048] The control cam 153 is preferably made of plastic. Alternatively, the control cam 153 may also be integrally molded onto the damper housing 152. In particular, components 11, 12, 13, 14, 16 and 17 may be made of metal, for example.

[0049] Figure 13 Show Figures 1 to 11 Multiple views of the cam guide 131 of the multi-joint hinge 1. The cam guide 131 includes a central recess 1314 such that a cam profile 1311 is arranged within the recess 1314, between guides 1312 formed on both sides of the cam profile 1311. A control cam 153 (especially its cam profile 1531) is capable of traveling along the cam profile 1311 between the guides 1312. The cam guide 131 includes an optional bearing 1313 for a bolt 321 (especially the bolt 321 of the second hinge joint 32). The top side 1315 of the cam guide 131 includes a profile 1316 that can be fitted into a mating profile on the top side 132 of the second lever 13. This provides additional holding and secure fixation of the cam guide 131 within the second lever 13 (see...). Figure 4 ).

[0050] Figure 14 A graph showing the relationship between damper travel and the opening angle of the multi-joint hinge 1 is provided. In the damped section A of the pivoting range, the damper 15 is compressed during the closing movement, wherein the maximum damping travel optionally extends beyond the closed position. In this illustrated case, the damper 15 is effective at least between the closed position and an opening angle of 0° to 35°. In the subsequent undamped section B of the pivoting range, the damper 15 is in idle mode and no damping force is applied during the opening or closing movement.

[0051] List of reference numerals 1. Multi-joint hinge 11 Holding element 12 First Lever 122 retaining components 13 Second Lever 131 Cam Guide 1311 Cam Profile 1312 Guide 1313 bearing 1314 concave part 1315 Top Side 1316 Outline 132 Top Side 14. Shell 15 Dampers 152 Damper Housing 153 Control Cam 1531 Cam Profile 1532 Reception Department 1533 body 1534 Web 16 Third Lever 17. The Fourth Lever 18. Accumulator 19 Actuating elements 31 First Joint 32 Second joint 321 bolt 33 Fifth Joint 34. Seventh joint 35 Third joint 36. Fourth joint 37. Sixth Joint K contact surface A Damping Section B Undamped section V-connector D Damper Orientation α Angle range.

Claims

1. A multi-joint hinge (1) comprising a retaining element (11) fixable to a door leaf, the retaining element being pivotable relative to a housing (14) of the multi-joint hinge (1) via a joint mechanism to a maximum open position and a closed position, wherein, The damper (15) is provided as a linear damper, the damper having a damper piston guided by a piston rod (154) within a damper housing (152), and a control cam (153) for actuating the damper (15) mounted on the damper housing (152), characterized in that a cam guide (131) is supported on the multi-joint hinge (1), wherein the cam guide (131) and the control cam (153) for actuating the damper (15) travel relative to each other along a contact surface (K) in a damping section (A) of the pivot range at least before the closed position, the contact surface extending at an angle relative to the actuation direction of the damper (15), such that the movement of the retaining element (11) toward the closed position can be braked by the damper (15) within the damping section (A) of the pivot range.

2. The multi-joint hinge (1) according to claim 1, characterized in that, When the damper (15) is actuated, the position of the contact surface (K) on the control cam (153) and the cam guide (131) changes at an angle relative to the actuation direction of the damper (15) along the control cam (153) and the cam guide (131), preferably changing more than 2 mm, more preferably between 3 mm and 12 mm, and most preferably between 4 mm and 8 mm.

3. The multi-joint hinge (1) according to claim 1 or 2, characterized in that, The holding element (11) is able to move in the idle in the undamped section (B) of the pivot range, while the damper (15) is not actuated by the cam guide (131) and the control cam (153).

4. The multi-joint hinge (1) according to claim 3, characterized in that, In the undamped section (B) of the pivot range, during idle, the control cam (153) abuts against the joint (32) of the joint mechanism or against a component supported on the joint (32).

5. The multi-joint hinge (1) according to claim 4, characterized in that, The joint (32) is formed as a cylindrical bolt (321), wherein the control cam (153) abuts the bolt (321) during a portion of the movement of the retaining element (11) between the closed position and the maximum open position, such that the damper (15) is not actuated within the range.

6. The multi-joint hinge (1) according to claim 4 or 5, characterized in that, The cam guide (131) abuts against the joint (32) without gap.

7. The multi-joint hinge (1) according to any one of the preceding claims, characterized in that, The multi-joint hinge (1) is a seven-joint hinge.

8. The multi-joint hinge (1) according to claim 7, characterized in that, The multi-joint hinge (1) is a seven-joint hinge with four levers (12, 13, 16, 17) and seven joints (31, 32, 33, 34, 35, 36, 37), wherein the retaining element (11) is rotatably supported on the first lever (12) at the first joint (31), the first lever (12) is rotatably supported on the second lever (13) at the second joint (32), and the second lever (13) is rotatably supported on the housing (14) at the third joint (35), the housing being fixed to the body of the furniture.

9. The multi-joint hinge (1) according to claim 8, characterized in that, The retaining element (11) is rotatably supported at the fourth joint (36) on at least the third lever (16), the third lever is rotatably supported at the fifth joint (33) on at least the fourth lever (17), the fourth lever is rotatably supported at the sixth joint (37) on the housing (14), wherein the third lever (16) is also rotatably supported at the seventh joint (34) on the second lever (13).

10. The multi-joint hinge (1) according to any one of the preceding claims, characterized in that, The damper (15) having the control cam (153) is capable of shifting on or within the first lever (12) of the joint mechanism.

11. The multi-joint hinge (1) according to any one of the preceding claims, characterized in that, The damper (15) having the control cam (153) is formed on a molded body having a receiving portion (1532), and one end of the damper housing (152) is inserted into the receiving portion (1532).

12. The multi-joint hinge (1) according to any one of claims 8 to 11, characterized in that, The damper piston is supported by a piston rod (154) on the wall of the first lever (12) and / or on the retainer (122) inside the first lever (12) and / or on the first joint (31).

13. The multi-joint hinge (1) according to any one of the preceding claims, characterized in that, The cam guide (131) includes a cam profile (1311) disposed between two guides (1312), wherein the cam profile (1531) of the control cam (153) is disposed between the guides (1312).

14. The multi-joint hinge (1) according to any one of the preceding claims, characterized in that, The movement of the retaining element (11) can be slowed down by means of the damper (15) at an opening angle of at least 10°, preferably at least 35°, of the multi-joint hinge before it is in the closed position relative to the housing (14).

15. The multi-joint hinge (1) according to any one of the preceding claims, characterized in that, The retaining element (11) is biased to the maximum open position and / or closed position by means of at least one accumulator (18).

16. A method for closing a multi-joint hinge (1), the multi-joint hinge including a retaining element (11) capable of being fixed to a door leaf, the retaining element being pivotable relative to a housing (14) of the multi-joint hinge (1) via a joint mechanism to a maximum open position and a closed position, wherein, The method comprises the following steps: At least one damper (15) is provided as a linear damper, the at least one damper having a damper piston guided by a piston rod (154) within the damper housing (152), and a control cam (153) for actuating the damper (15) is mounted on the damper (15). a. Pivot the retaining element (11) of the multi-joint hinge (1) from the maximum open position in the closing direction and move the control cam (153) fixed to the damper (15) along a joint (32) designed as a bolt (321) or a component supported on the joint (32), wherein, in the undamped section (B) of the pivot range, the retaining element (11) moves in the idle without actuating the damper (15). b. Pivot the retaining element (11) further along the closing direction and move the control cam (153) along the cam profile (1311) of the cam guide (131) arranged adjacent to the bolt (321), wherein the damper piston is displaced relative to the damper housing (152) by the control cam (153) and the cam guide (131); and c. As the control cam (153) travels along the cam guide (131) at the contact surface (K) within the damped section (A) of the pivot range, the retaining element (11) is further pivoted under the braking action of the damper (15) until it reaches the closed position.

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