Multi-joint hinge and method for closing a multi-joint 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) and which can be pivoted via a joint mechanism relative to a housing (14) of the multi-joint hinge (1) into a maximum open position and into a closed position, wherein at least one damper (15) is provided as a linear damper having a damper piston guided in a damper housing (152) by a piston rod (154), and a control cam (153) for actuating the damper (15) is held on the damper housing (152). A cam guide (131) is mounted on the multi-joint hinge (1), wherein to actuate the damper (15) at least over a damped part (A) of the pivoting range the cam guide (131) and the control cam (153) run on one another on a contact surface (K) extending at an angle to an actuation direction of the damper (15) such that a movement of the holding element (11) into the closed position in the damped part (A) of the pivoting range can be braked by means of the damper (15). The invention also relates to a method for closing a multi-joint hinge (1).

Description

[0001] Multi-joint hinge and method for closing a multi-joint hinge

[0002] The present invention relates to a multi-joint hinge having a holding element which can be fixed to a door leaf and which can be pivoted into a maximum opening position and into a closing position relative to a housing of the multi-joint hinge via a joint mechanism, wherein at least one damper is provided as a linear damper with a damper piston guided by a piston rod in a damper housing, and a control cam for actuating the damper is held on the damper housing, and a method for closing a multi-joint hinge.

[0003] WO 2008 / 119647 A1 shows a seven-joint hinge with a stationary fastening element, on which a door bearing is pivotably mounted via a joint mechanism with several levers connected in a scissor-like manner. The joint mechanism includes a damper with a damper housing and a damper piston, which is rotatably mounted on opposite sides of a lever of the seven-joint hinge to slow down the closing movement of the hinge.

[0004] The problem with state-of-the-art multi-joint hinges is that mounting the damper on the hinge is complex and that the damper also acts in areas of the hinge's movement where deceleration may not be desired, which makes handling more difficult and also increases the load on the damper.

[0005] It is therefore an object of the present invention to provide an improved multi-joint hinge and to create a method for an improved closing of a multi-joint hinge.

[0006] The present invention solves this problem with a multi-joint hinge according to claim 1 and a method according to claim 16.

[0007] According to the invention, the multi-joint hinge comprises a retaining element that can be secured to a door leaf and pivoted into a maximum opening position and a closed position relative to a housing of the multi-joint hinge via a joint mechanism. At least one damper is provided as a linear damper with a damper piston guided by a piston rod in a damper housing, and a control cam for actuating the damper is held on the damper housing. A cam guide is additionally mounted on the multi-joint hinge, with the cam guide and the control cam for actuating the damper running toward one another at least over a damped portion of the pivoting range along a contact surface extending at an angle to an actuating direction of the damper, so that a movement of the retaining element into the closed position can be braked in the damped portion of the pivoting range by means of the damper.Through the interaction of the cam guide with the control cam on the contact surface, a particularly advantageous deceleration of the movement of the holding element can be achieved, whereby the shape of the cam guide and the control cam allows both the start of the damping and the level of the damping force to be adjusted depending on the closing position.

[0008] The position of the contact surface on the control cam and the cam guide preferably changes by more than 2 mm, preferably by between 3 mm and 12 mm, and even more preferably by 4 to 8 mm along the control cam and the cam guide when the damper is actuated. This enables particularly reliable actuation of the damper.

[0009] When the control cam is in contact with the cam guide, the damper is actuated, in particular pressed in, when the holding element moves. When the control cam moves along the cam guide, the contact point between the control cam and the cam guide is also shifted perpendicular to the direction of movement of the damper, so that the respective contours of the control cam and the cam guide affect the movement of the damper. The control cam and / or the cam guide can be designed as a flat, convex or concave surface in order to adjust the damping force accordingly depending on the opening angle. The damping stroke is preferably essentially linear in relation to a pivoting path when the holding element pivots in the closing direction.

[0010] In an undamped part of the pivoting range, which is located upstream of the damped part of the pivoting range adjacent to the closed position in the closing direction, the holding element is preferably movable in a freewheeling manner without actuating the damper by means of the cam guide and the control cam. This allows the holding element to move smoothly. In the undamped part of the pivoting range, i.e. in the freewheeling manner, the control cam preferably bears against a joint of the joint mechanism, for example against a cylindrical outer surface of the joint or a component supported on the joint. The joint can be designed, for example, as a bolt, wherein the bolt is preferably cylindrical at least in the region of the adjacent control cam, such that the control cam bears against the bolt during part of a movement of the holding element between the maximum opening position and the closed position, such that the damper is not actuated in this region.This allows a freewheel to be provided using simple means. Freewheeling is achieved over the entire angular range where the control cam on the damper contacts the cylindrical outer surface of the joint or a component with a cylindrical outer surface supported on the joint, since the damper is not compressed during a rotational movement of the damper relative to the outer surface.

[0011] Preferably, the cam guide rests against the joint without a gap, so that the two contact surfaces of the pin and the cam contour of the cam guide are arranged directly adjacent. The cam guide and / or the control cam are made of a plastic, for example. Optionally, the control cam can also be manufactured integrally with the damper housing.

[0012] Alternatively, it is also possible for the cam guide to surround the bolt in some areas, wherein the cam guide in the area of ​​the freewheel has a cylindrical outer surface which is arranged essentially concentrically to the bolt, so that the control cam rests against the cam guide over the entire opening angle.

[0013] The multi-joint hinge is preferably a seven-joint hinge and is even more preferably a seven-joint hinge with four levers and seven joints. This makes the multi-joint hinge particularly robust. The holding element is rotatably mounted, in particular, at a first joint on a first lever, which is rotatably mounted at a second joint on a second lever, which is rotatably mounted at a third joint on the housing that can be secured to a body of the furniture. In particular, the curved guide is pivotably mounted on the second joint. In a particularly preferred embodiment, the curved guide is designed such that a curved actuating surface of the curved guide, i.e., a curved contour of the curved guide, is arranged such that it directly borders the second joint. The curved guide can preferably be fixed in a recess or receptacle on one of the levers of the joint mechanism.In one embodiment of the joint mechanism, the holding element is also preferably rotatably mounted on at least one third lever at a fourth joint, which is rotatably mounted on at least one fourth lever at a fifth joint, which is rotatably mounted on the housing at a sixth joint, wherein the third lever is also rotatably mounted on the second lever at a seventh joint. In addition, the second and third levers are pivotally connected to one another.

[0014] The damper with the control cam, in particular the damper piston and / or the piston rod or the damper housing, is preferably held displaceably in a holder on the first lever. Preferably, the damper is held within the holder; more preferably, the holder is held in a cavity formed from the first lever. The damper piston is preferably supported on a wall of the holder by means of the piston rod. The damper is preferably mounted in the holder in a rotationally secure manner. For this purpose, the damper or a molded part with the control cam of the damper or on the damper has guide webs. The damper can be held loosely within guides on or in the holder, so that no further coupling elements for mounting the damper, in particular no pivot bearings, are necessary.The holder is preferably fixedly arranged in the first lever, in particular in that the holder also has receptacles for the first and / or second joint.

[0015] Alternatively, the piston rod of the damper can also rest on a joint rivet or a bolt of the first joint on the holding element.

[0016] In a preferred embodiment, the control cam is formed with a curved contour on a substantially cuboid-shaped molded body with a receptacle, for example a cylindrical receptacle, and one end of the damper housing is inserted into the receptacle and fixed there, for example by clamping. As a variant, the damper can also be rotated by 180°, so that the piston rod is inserted into a cylindrical receptacle and one end of the damper housing is fixed either to a wall of a holder or the first lever, or to a joint rivet or a bolt of the first joint on the holding element. Guide surfaces, for example webs, can be formed on an outer side of the molded body in order to guide the damper linearly in the holder when compressed. The control cam and the damper housing are preferably formed as separate components and fixed to one another, in particular plugged together in a force-fitting manner.Alternatively, the control cam can also be formed on a shaped body that forms the damper housing and into which the damper piston is inserted.

[0017] In a preferred embodiment, the damper piston is slidably supported on a surface of the bracket by means of the piston rod. The support surface of the bracket can in turn be supported on a joint. The damper can be a compression damper that develops damping forces when compressed, but develops no or only negligible damping forces when extended into an expanded position. The damper can comprise a spring that preloads the piston and piston rod of the damper into an extended position. This ensures constant contact between the piston rod and a support surface without the need for additional fastening, such as clip connections or the like. Alternatively, the damper can also be designed as a tension damper.

[0018] Particularly preferably, the damper is designed as a linear damper in the form of a fluid damper, but alternatively it can also be another type of damper or a gas pressure spring.

[0019] The damper is preferably arranged in the area between the two joints of the first lever, i.e. between the first and second joints, and can thus optimally utilize the available space. The longitudinal extension or compression of the linear damper preferably takes place between the first and second joints, with the piston rod and the damper housing being located completely between the two joints in all opening angle positions. The alignment of the linear damper essentially corresponds to an imaginary connecting line between the first and second joints. The connecting line and the alignment of the linear damper are within an angular range of 0° to 12° to each other or are spaced parallel to each other.

[0020] Due to the bearing and design of the damper, it is constantly fixed between two points and no pivot bearing is necessary.

[0021] Preferably, the curved guide and the control cam are guided together in a direction parallel to the axes of the joint mechanism. The movement of the curved guide and the control cam in a direction parallel to the axes of the joint mechanism is limited by a guide, for example by stops or guide surfaces that are integrally formed with the curved guide and / or the control cam. Preferably, the curved guide has the curved contour arranged between two guides, wherein the curved contour of the control cam is arranged between the guides. The curved guide has a maximum transverse extent perpendicular to a direction of travel of the curved guide and the control cam to one another in order to be arranged between the guides. Preferably, the maximum transverse extent of the curved contour on the control cam corresponds to the area between the two guides.This fork-shaped engagement of the control cam between the two guides creates axial guidance. Alternatively or additionally, the control cam can also have a fork-shaped contour. The cam guide and / or the control cam can optionally have a curved contour between two skid-shaped sections.

[0022] The multi-joint hinge can make the closing movement of the door leaf of a piece of furniture or household appliance more comfortable for the user. The damper can be used to brake the movement of the retaining element relative to the housing, preferably at an angle of at least 20°, for example, within a pivoting range between 0° and 35°, relative to the maximum closing position of the retaining element. Optionally, the damper can be actuated at an angle of 50°, whereby the damper can have an idle stroke of 50° to approximately 35°, in which it is actuated but does not yet cause braking.

[0023] In particular, the damper is arranged substantially within the first or second lever, so that the multi-joint hinge can be designed compactly. For this purpose, the first lever can be designed such that it has a U-shaped cross-section substantially perpendicular to the damping direction and / or its longitudinal extent, in which cross-section the damper can be arranged. The damper is preferably held in the holder in a rotationally secure or non-rotatable manner. The holder can predominantly enclose the damper, whereby the overlap can vary depending on the position of the damper. The damper with the holder lies within a cavity formed by the U-shaped first or second lever. In one variant, the first or second lever and the holder for the damper could also be designed integrally.

[0024] The retaining element is preferably preloaded into the maximum open position and / or the maximum closed position by means of at least one force accumulator, thus supporting movement of the retaining element into at least one of the two end positions. For this purpose, the at least one third lever and / or the at least one first lever can be preloaded against an adjacent further lever, in particular by means of the at least one force accumulator.

[0025] The housing of the multi-joint hinge is in particular fastened or can be fastened to a body of a piece of furniture or a household appliance, wherein the holding element is preferably fixed to a door leaf of a door of the furniture in order to enable simple damping of a closing movement of the door leaf before reaching the closed position.

[0026] The retaining element can, for example, be glued to the door leaf or attached using fastening elements, e.g. screws.

[0027] The present invention also includes a method for closing a multi-joint hinge having a holding element that can be secured to a door leaf and pivoted into a maximum opening position and a closed position relative to a housing of the multi-joint hinge via a joint mechanism, wherein at least one damper is provided as a linear damper with a damper piston guided in a damper housing via a piston rod, and a control cam for actuating the damper is held on the damper, comprising the following steps: a) pivoting a holding element of the multi-joint hinge from the maximum opening position in the closing direction and moving the control cam fixed to the damper along a joint, designed as a bolt, or a component supported on the joint, wherein the holding element is moved in an undamped part of the pivoting range in a freewheel without actuating the damper;b) Further pivoting of the retaining element further in the closing direction and of the control cam along a curved contour of a curved guide arranged adjacent to the bolt, wherein the damper piston is displaced relative to the damper housing by the control cam and the curved guide; and c) Further pivoting of the retaining element under a braking effect of the damper by the control cam running along the curved guide at a contact surface in a damped part of the pivoting range until the closed position is reached. The method according to the invention enables particularly advantageous damping of the movement of the multi-joint hinge only in a predetermined closing range using means that are easy to manufacture. The multi-joint hinge is particularly preferably a multi-joint hinge according to the invention.

[0028] Preferably, in step a), the control cam and / or the damper housing runs on a part that has a substantially constant diameter in a plane of the pivoting movement or on which no relative movement occurs during pivoting. Alternatively, the control cam can be limited by the extension movement on a bracket in a lever of the hinge.

[0029] The invention will be explained in more detail below using an exemplary embodiment with reference to the accompanying drawings. They show:

[0030] Fig. 1 is a sectional view of a multi-joint hinge according to the invention in a maximum closed position,

[0031] Fig. 2 is an isometric view of the hinge from Fig. 1 ,

[0032] Fig. 3a and 3b a side view of the multi-joint hinge according to the invention from Fig. 1 in a maximum opening position, as well as a cross section,

[0033] Fig. 4 is an isometric view of Fig. 3a,

[0034] Fig. 5 is a sectional view of a portion of Fig. 4,

[0035] Fig. 6 is a further sectional view of another area of ​​Fig. 4,

[0036] Fig. 7 is a sectional view of the multi-joint hinge of Fig. 1 in a position of the holding element between the maximum opening and the maximum closing position,

[0037] Fig. 8 is a sectional view of the multi-joint hinge of Fig. 1 in a further position of the retaining element between the maximum opening and the maximum closing position,

[0038] Fig. 9 Exploded views of the multi-joint hinge from Fig. 1 ,

[0039] Fig. 10 is a sectional view of the multi-joint hinge from the side corresponding to Fig. 7, Fig. 11 is a sectional view of the multi-joint hinge from the side corresponding to Fig. 8,

[0040] Fig. 12 several views of a control cam of the multi-joint hinge from Fig. 1 to 11,

[0041] Fig. 13 several views of a curved guide of the multi-joint hinge from Fig. 1 to 11, and

[0042] Fig. 14 a diagram of the damping stroke depending on the opening angle.

[0043] Fig. 1 shows a side view and Fig. 2 an isometric view of a multi-joint hinge 1 according to the invention in a closed position. The multi-joint hinge 1 is designed here as a seven-joint hinge and has a holding element 11 that can be secured to a door leaf of a piece of furniture or a household appliance and is rotatably mounted on a first lever 12 of a joint mechanism at a first joint 31.

[0044] The first lever 12 is rotatably mounted on a second joint 32 on a second lever 13, which is rotatably mounted on a third joint 35 on a housing 14 that can be secured to a body of the furniture, so that the holding element 11 can be pivoted relative to the housing 14 into a maximum opening position and into a maximum closing position. The holding element 1 is also rotatably mounted on a fourth joint 36 on at least one third lever 16, which is rotatably mounted on a fifth joint 33 on at least one fourth lever 17, which is rotatably mounted on the housing 14 at a sixth joint 37.

[0045] The third lever 16 is rotatably mounted on the second lever 13 at a seventh joint 34. In this way, a lever movement that can be realized essentially by two variable four-bar arrangements is preferably enabled. A damper 15, here a linear damper, is arranged within the first lever 12. This damper is mounted in the region of the first joint 31 on a wall of the first lever 12 or a holder 122. It has a damper piston (not shown here) that is movable via a piston rod 154, and a damper housing 152. The damper piston is arranged within the damper housing 152. A control cam 153 is arranged on the damper housing 152, by means of which a movement of the holding element 11 into the closed position can be braked by means of the damper 15. The control cam 153 is located at the end of the damper housing 152 facing away from the piston rod 154.To actuate the damper 15 via the control cam 153, which has a curved contour 1531, a curved guide 131 is mounted on the second lever 13. The curved guide 131 has a curved contour 1311 between two optional guides 1312. The curved guide 131 and the control cam 153 contact one another at a contact surface K, which extends at an angle to an actuation direction of the damper 15. The contact surface K is a surface on which the curved contour 1531 of the control cam 153 and the curved contour 1311 of the curved guide 131 rest against one another without a gap. In the closed position, the control cam 153 and the curved guide 131 have run against one another at the contact surface K.

[0046] In the front area of ​​the holding element 11 in Fig. 2, the door leaf can be fixed, for example by gluing or fastening means such as screws.

[0047] Fig. 3a shows a side view of the multi-joint hinge 1 according to the invention from Fig. 1 in a maximum opening position. Fig. 3b shows a cross-section of Fig. 3a. The curved guide 131 is designed as a molded part and is rotatably mounted on the second joint 32, in particular about a pin 321. The curved guide 131 is fixedly attached to the lever 13.

[0048] In the illustrated embodiment, the damper 15 is not actuated before reaching the maximum opening position, wherein the control cam 153 runs on the second joint 32, next to the cam guide 131, in particular on the bolt 321 of the second joint 32, wherein no change in position of the damper housing 152 takes place.

[0049] Also optionally arranged on the optional third lever 16 is a force accumulator 18, which here comprises a spring having an actuating contour by means of which it can be actuated by means of the fourth lever 17. It can also be seen in Fig. 3b that the curved guide 131, and in particular the curved contour 1311, rests against the bolt 321 without a gap.

[0050] An isometric view of the multi-joint hinge 1 from Fig. 3a is shown in Fig. 4. The first lever 12 essentially has a hollow space perpendicular to its longitudinal extent. As can be seen from Fig. 3b, the damper 15 is arranged almost entirely within the first lever 12. The damper 15 is preferably accommodated in the hollow space of the first lever 12. Fig. 5 shows a sectional view of a portion of Fig. 4, wherein it can be seen that the damper piston has a piston rod 154 that is supported on a housing wall of the holder 122.

[0051] As shown in Fig. 5 and Fig. 6, the damper 15 is not actuated in the maximum opening position of the holding element 11, but the control cam 153 only rests on the cylindrical bolt 321 of the second joint 32, wherein the actual cam contour 1311 of the cam guide 131 is not in contact with the control cam 153 or the cam contour 1531.

[0052] Fig. 7 shows a sectional view of the multi-joint hinge 1 from Fig. 1 with the holding element 11 in a position between the maximum opening and the closed position. The holding element 11 is moving towards the closed position. The control cam 153 and / or its cam contour 1531 contacts the cam contour 1311 of the cam guide 131 for the first time during the movement of the holding element 11, for example at an angle of 50° before reaching the maximum closed position, which causes the damper 15 to be actuated by compressing it. To actuate the damper 15, the cam contour 1531 thus runs over a damped part of the pivoting range in which the damper is actuated, along the contact surface K on the cam contour 1311, which changes during the pivoting movement of the multi-joint hinge 1.The curved contour 1531 runs in a non-actuated region of the damper, i.e., in an undamped part of the pivoting range on the pin 321 of the second joint 32, preferably between the optional guides 1312, only one of which is shown in Fig. 7. The damper 15 is shown partially actuated in Fig. 7, with the damper housing 152 displaced in the direction of the first joint 31 along the piston rod 154. The damper 15 is held in the holder 122. The holder 122, in turn, is arranged stationary in the cavity formed by the first lever 12.

[0053] Fig. 8 shows a sectional view of the multi-joint hinge 1 from Fig. 1 in a further position of the holding element 11 between the maximum opening and closing positions, wherein the holding element 11 is closer to the closing position compared to Fig. 7. The control cam 153, or the curve contour 1531, has run even further along the curve guide 131 here. The curve guide 131 and the control cam 153 interact, as in Fig. 7, at the position of the contact surface K on the curve guide 131 and the control cam 153, which changes by more than 2 mm, preferably between 2 and 8 mm, along the curve guide 131 and the control cam 153 during the movement. This leads to further actuation of the damper 15, whereby the damper piston is pushed further into the damper housing 152 via the piston rod 154 and thus consequently a movement of the holding element 11 is braked.

[0054] Fig. 9 shows an exploded view of the multi-joint hinge 1 from Fig. 1. In particular, it can be seen here that the first lever 12 has a U-shaped cross-section and therefore has a hollow space. A holder 122 is inserted into this hollow space, which in turn accommodates the damper 15. In this case, the holder 122, like the first lever 12, is fastened to the first joint 31 and the second joint 32 and is thus arranged immovably relative to the first lever 12. The holder 122 mostly encloses the damper 15, with the overlap depending on the damper position. The piston rod of the damper 15 is supported on a wall of the holder 122. The assembly comprising damper 15 and control cam 153 is slidably mounted on the holder 122 via webs 1534.

[0055] By means of an optional control element 19, on which a control curve is formed, the energy accumulator 18 optionally applies a force in the closing and / or opening direction to the joint mechanism of the multi-joint hinge 1 via an actuation curve.

[0056] Fig. 10 shows a sectional view of the multi-joint hinge 1 from the side, corresponding to Fig. 7, wherein it can be seen that the third lever 16 and the fourth lever 17 are also pivoted, which leads to an actuation of the energy accumulator 18. Fig. 11, in turn, shows a sectional view of the multi-joint hinge 1 from the side, corresponding to Fig. 8. Preferably, the movement of the holding element 11 can be braked at an opening angle, which is an angle between the closed position and an opening position of the holding element 11, starting from 10° to 35° up to the closed position. The orientation D of the damper 15, i.e. the linear damper, essentially corresponds to an imaginary connecting line V between the first and second joints 31 and 32. The connecting line V and the orientation D of the linear damper are in an angular range a of 0° to 12° to one another or are spaced parallel from one another.

[0057] Fig. 12 shows several views of a control cam 153 of the multi-joint hinge 1 from Figs. 1 to 11. The control cam 153 is designed here as a separate component having a substantially cuboid-shaped body 1533 on which the cam contour 1531 is formed. Also formed in the body 1533 is a cylindrical receptacle 1532 into which the damper housing 152 is inserted in the previous figures. Webs 1534 are arranged on the sides of the body 1533. The webs 1534 serve to guide and reduce friction on the bracket 122. Furthermore, this prevents transverse forces that could adversely affect the damper 15.

[0058] The control cam 153 is preferably made of a plastic. Optionally, the control cam 153 can also be integrally formed on the damper housing 152. In particular, the components 11, 12, 13, 14, 16, and 17 can be made of metal, for example.

[0059] Fig. 13 shows several views of a curved guide 131 of the multi-joint hinge 1 from Figs. 1 to 11. The curved guide 131 has a recess 1314 in the center, so that the curved contour 1311 is arranged in the recess 1314, between guides 1312 formed on both sides of the curved contour 1311. The control curve 153 and in particular its curved contour 1531 can run on the curved contour 1311 between the guides 1312. The curved guide 131 has an optional bearing 1313 for the bolt 321, in particular of the second joint 32. The upper side 1315 of the curved guide 131 has a contour 1316 that can be inserted into a mating contour on an upper side 132 of the second lever 13. This creates an additional holder and stationary fixation of the curve guide 131 within the second lever 13 (see Fig. 4).

[0060] Fig. 14 shows a diagram of the damper stroke in relation to the opening angle of the multi-joint hinge 1. In a damped part A of the pivot range, the damper 15 is compressed during a closing movement, with the maximum damping stroke optionally extending beyond the closed position. In this illustrated case, the damper 15 is effective at least between the closed position and an opening angle between 0° and 35°. In the further, undamped part B of the pivot range, the damper 15 is freewheeling and does not exert any damping forces during an opening or closing movement. List of Reference Symbols

[0061] 1 multi-joint hinge

[0062] 11 Holding element

[0063] 12 first lever 122 bracket

[0064] 13 second lever

[0065] 131 Curve guidance

[0066] 1311 Curve contour

[0067] 1312 Guide

[0068] 1313 Storage

[0069] 1314 Recess 1315 Top 1316 Contour 132 Top

[0070] 14 housings

[0071] 15 dampers

[0072] 152 Damper housing

[0073] 153 Control curve 1531 Curve contour 1532 Holder 1533 Body

[0074] 1534 jetty

[0075] 16 third lever

[0076] 17 fourth lever

[0077] 18 energy storage units

[0078] 19 Control element

[0079] 31 first joint

[0080] 32 second joint 321 bolt

[0081] 33 fifth joint

[0082] 34 seventh joint

[0083] 35 third joint

[0084] 36 fourth joint

[0085] 37 sixth joint

[0086] K Contact area

[0087] A damped part

[0088] B undamped part V connecting line

[0089] D Damper alignment a Angle range

Claims

Claims 1 . Multi-joint hinge (1) comprising a holding element (11) which can be fixed to a door leaf and which can be pivoted into a maximum opening position and into a closing position via a joint mechanism relative to a housing (14) of the multi-joint hinge (1), wherein at least one damper (15) is provided as a linear damper with a damper piston guided in a damper housing (152) by a piston rod (154), and a control cam (153) for actuating the damper (15) is held on the damper housing (152), characterized in that a cam guide (131) is mounted on the multi-joint hinge (1), wherein the cam guide (131) and the control cam (153) for actuating the damper (15) extend at least over a damped part (A) of the pivoting range before the closing position along a Contact surface (K) run on each other,so that a movement of the holding element (11) into the closed position in the damped part (A) of the pivoting range can be braked by means of the damper (15).

2. Multi-joint hinge (1) according to claim 1, characterized in that a position of the contact surface (K) on the control cam (153) and the cam guide (131) changes upon actuation of the damper (15) at an angle to its actuation direction preferably by more than 2, preferably by between 3 and 12 mm and even more preferably by 4 to 8 mm along the control cam (153) and the cam guide (131).

3. Multi-joint hinge (1) according to claim 1 or 2, characterized in that the holding element (11) is movable in an undamped part (B) of the pivoting range in a freewheel without actuation of the damper (15) by the cam guide (131) and the control cam (153).

4. Multi-joint hinge (1) according to claim 3, characterized in that the control cam (153) in the undamped part (B) of the pivoting range, i.e. in the freewheel, rests on a joint (32) of the joint mechanism or a component supported on the joint (32).

5. Multi-joint hinge (1 ) according to claim 4, characterized in that the joint (32) is designed as a cylindrical bolt (321 ), wherein the control cam (153) is pivotally mounted on the Bolt (321 ) so that the damper (15) is not actuated in this area.

6. Multi-joint hinge (1) according to claim 4 or 5, characterized in that the curved guide (131) rests against the joint (32) without a gap.

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

8. 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 holding element (11) is rotatably mounted at a first joint (31) on a first lever (12), which is rotatably mounted at a second joint (32) on a second lever (13), which is rotatably mounted at a third joint (35) on the housing (14) which can be fixed to a body of the furniture.

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

10. Multi-joint hinge (1) according to one of the preceding claims, characterized in that the damper (15) with the control cam (153) is held displaceably on or in the first lever (12) of the joint mechanism.

11. Multi-joint hinge (1) according to one of the preceding claims, characterized in that the control cam (153) is formed on a shaped body with a receptacle (1532) and one end of the damper housing (152) is inserted into the receptacle (1532).

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

13. Multi-joint hinge (1) according to one of the preceding claims, characterized in that the curved guide (131) has a curved contour (1311) which is arranged between two guides (1312), wherein a curved contour (1531) of the control curve (153) is arranged between the guides (1312).

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

15. Multi-joint hinge (1) according to one of the preceding claims, characterized in that the holding element (11) is pretensioned into the maximum opening position and / or into the closing position by means of at least one force accumulator (18).

16. Method for closing a multi-joint hinge (1) which has a holding element (11) which can be fixed to a door leaf and which can be pivoted into a maximum opening position and into a closing position relative to a housing (14) of the multi-joint hinge (1) via a joint mechanism, wherein at least one damper (15) is provided as a linear damper with a damper piston guided in a damper housing (152) via a piston rod (154), and a control cam (153) for actuating the damper (15) is held on the damper (15), which comprises the following steps: a.Pivoting a holding element (11) of the multi-joint hinge (1) from the maximum opening position in the closing direction and moving 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 the holding element (11) is moved in an undamped part (B) of the pivoting range in a freewheeling manner without actuating the damper (15); b. Further pivoting of the holding element (11) in the closing direction and of the control cam (153) along a curved contour (1311) of a curved 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 curved guide (131); and. c. Further pivoting of the holding element (11) under a braking effect of the damper (15) by running the control cam (153) on the cam guide (131) on a contact surface (K) in a damped part (A) of the pivoting range until the closed position is reached.

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