EP3124729A1 - Holding element for adjusting a cover of a piece of furniture - Google Patents

Abstract

Holding element for adjusting a lid of a piece of furniture, wherein the holding element comprises a first fitting part 1, which is connectable to the body 2 of a piece of furniture; a second fitting part 3 connectable to the lid 4; an articulated arm mechanism 20 having at least one actuator arm 15 and a first support arm 5, wherein via the Gelenkarmmechanismus 20, the first fitting part 1 and the second fitting part 3 are pivotally connected to each other between a closed position and an open position; a linear drive 12, which is at least indirectly supported on the one hand against the first fitting part 1 and on the other hand against the actuating arm 15 and this applied with force; and a linear damper 32 for damping the movement of the Gelenkarmmechanismus 20, wherein the linear damper 32 is supported on the one hand against the first fitting part 1 and on the other hand coupled to the Gelenkarmmechanismus 20 over at least part of the pivoting path and supported against this and wherein a positioning direction L of the linear drive 12 is arranged parallel to a positioning direction D of the linear damper 32.

Description

The invention relates to a holding element for adjusting a lid of a piece of furniture, wherein the holding element has a first fitting part, which is connectable to the body of a piece of furniture, and a second fitting part, which is connectable to the lid. An articulated arm mechanism is provided with at least one actuating arm and a first supporting arm, wherein the first fitting part and the second fitting part are pivotally connected to one another via a pivoting arm mechanism between a closed position and an open position. A linear drive is at least indirectly supported on the one hand against the first fitting part and on the other hand against the actuating arm and acts on the actuating arm with force. To dampen the movement of the Gelenkarmmechanismus, the holding element on a linear damper.

Such a holding element is from the EP 2 238 306 B1 known. The holding element described therein ensures that the lid is held in any position over the largest possible pivoting range between the closed position and the open position. For this purpose, the Gelenkarmmechanismus in addition to the first support arm in addition to a second support arm, wherein the support arms are trapezoidal to each other and form a four-link coupling gear. The support arms are acted upon by the linear drive via the actuator arm in the direction of taking the open position with force. The Gelenkarmmechanismus further comprises a lever which is pivotally mounted about a pivot axis on the first fitting part, wherein the actuating arm is pivotally connected to the pivot axis with the lever. It has been found that by the arrangement of the lever, which is acted upon by the linear drive, the actuating arm exerts a torque on the flap, which holds this over a large pivoting range of the flap in any position. In addition, it is provided that the support arms are arranged to each other such that they intersect in the open position of the lid. This results in a particularly good support of the lid to keep it over the largest possible angle range in any position. This means that the support arms are not arranged parallel to each other.

Another holding element is in the DE 296 05 551 U1 shown. The holding element comprises two levers which are each pivotally mounted on one side of a body-side fitting part and on the other hand are pivotally mounted on a flap side fitting part, wherein the body-side fitting part is attached to a body of the furniture and the flap-side fitting part is attached to the flap. The levers are trapezoidal and form a four-link coupling gear. Thus, the movement kinematics of the lid relative to the body is determined by the arrangement of the lever. The lid is to open at the top, with a tension spring is provided, which acts on the one hand on the body-side fitting part and on the other hand, the flap-side fitting part, wherein a force is exerted on the flap side fitting part by the tension spring, which holds the lid in the open position or this independently transferred to the open position. In addition, the tension spring is arranged such that when passing through a dead center, the flap is also held in the closed position and results in a tightening torque.

Object of the present invention is to develop an aforementioned holding element such that it is compact and simple.

According to the invention the object is achieved by a holding element for adjusting a lid of a piece of furniture, wherein the holding element has a first fitting part, which is connectable to the body of a piece of furniture, a second fitting part, which is connectable to the lid. The retaining element further comprises an articulated arm mechanism with at least one actuating arm and a first support arm, wherein the first fitting part and the second fitting part are pivotally connected to one another via a hinge arm mechanism between a closed position and an open position. A linear drive is on the one hand against the first fitting part and on the other supported at least indirectly against the actuator arm and acts on the actuator arm with force. For damping the movement of the Gelenkarmmechanismus a linear damper is provided, wherein the linear damper is supported on the one hand against the first fitting part and on the other hand coupled to the Gelenkarmmechanismus over at least part of the pivoting path and supported against the Gelenkarmmechanismus. Here, a positioning direction of the linear drive is arranged parallel to a direction of adjustment of the linear damper.

For coupling the linear damper with the Gelenkarmmechanismus the linear damper is coupled to the first support arm over at least a portion of the pivoting path and supported against the first support arm.

The parallel arrangement of the linear damper and the linear drive results in an extremely compact design. In particular, when the holding element is designed such that in the installed state of the linear drive and the linear damper each have a direction of adjustment in a vertical orientation. The retaining element then builds very short in relation to the depth of the furniture and can also be installed in furniture with a smaller overall depth.

In addition, the linear drive and the linear damper are not pivotally arranged to each other, so that there are fewer moving components that ensure a simple structure.

Preferably, the linear drive is designed in the form of a spring accumulator, which may have a tension spring in design.

In a preferred embodiment, the Gelenkarmmechanismus further comprises a second support arm. The first support arm is pivotable about a first carcass axis at the first fitting part and pivotable about a first lid axis attached to the second fitting part. The second support arm is pivotally mounted about a second body axis on the first fitting part and pivotable about a second lid axis on the second.

In a further embodiment, the Gelenkarmmechanismus further a one Have lever. The lever is pivotally mounted about a pivot axis on the first fitting part. It is provided that the actuating arm is pivotally connected at a distance from the pivot axis via a hinge with the lever and is pivotally mounted about a third lid axis on the second fitting part.

The first support arm and the second support arm are trapezoidal to each other and form a four-link coupling joint. Thus, the movement kinematics of the lid relative to the body is predetermined by the arrangement of the two support arms. It has been shown that by the arrangement of the lever which is acted upon by the linear drive with force, the actuating arm exerts a torque on the lid, which holds this over a large pivoting range of the lid in any position.

In addition, it can be provided that the arrangement of the first support arm and the second support arm is provided to each other such that they intersect in the open position of the lid. This results in a particularly good support of the lid to keep it over the largest possible angle range in any position. The support arms are not arranged parallel to each other. A first plane including the first body axis and the first lid axis and a second plane including the second body axis and the second lid axis intersect in a common axis of rotation. About this axis of rotation, the lid or the second fitting element, wherein the axis of rotation moves in space rotates. In the open position, the axis of rotation is arranged between the first body axis and the first lid axis or between the second body axis and the second lid axis, so that the support arms intersect.

Here, the body axis, the lid axes and the pivot axis are arranged parallel to each other.

The linear drive preferably engages the joint between the actuator arm and the lever. Here, the lever may have a pivot pin on which the actuating arm is pivotally mounted. The linear drive is supported on the pivot pin.

In a preferred embodiment, the linear drive has a lock slider, which is guided axially displaceably on the first fitting part in the direction of the linear drive. The linear drive comprises a tension spring, which is supported on the one hand on the first fitting part and on the other hand fixed to the adjusting slide.

The linear drive preferably further comprises a guide slide, which is guided displaceably on the adjusting slide transversely to the adjusting direction of the linear drive and which is pivotally mounted on the pivot pin. Since the lever pivots about its pivot axis and thus the pivot pin is moved in a circular path, it is provided that the guide slide is guided in a guide groove of the first fitting part, wherein the guide groove extends along a movement path of the joint.

In a preferred embodiment, the linear damper on a damper housing and a damper slide, which are mutually axially adjustable in the direction of the linear damper. The damper housing is guided axially adjustable in the direction of the linear damper on the first fitting part. The damper slide is axially supported against the first fitting part.

To establish the coupling between the first support arm and the linear damper, the damper housing has a first guide member coupled to a second guide member of the first support arm via at least a portion of the pivotal path of the articulated arm mechanism. In an embodiment, the damper housing may have a groove as the first guide element, in which an actuating cam engages as a second guide element at least over part of the pivoting path of the articulated arm mechanism.

Figur 1

eine Seitenansicht einer ersten Seite einer ersten Ausführungsform eines erfindungsgemäßen Halteelements in der Offenstellung ohne Darstellung des Lineardämpfers,

Figur 2

eine Seitenansicht der ersten Seite des Halteelements gem. Figur 1 in einer Zwischenstellung,

Figur 3

eine Seitenansicht der ersten Seite einer zweiten Ausführungsform eines Halteelements in der Schließstellung ohne Darstellung des Lineardämpfers,

Figur 4

eine Seitenansicht der ersten Seite des Halteelements gem. Figur 3 in einer Zwischenstellung,

Figur 5

eine perspektivische Explosionsdarstellung der Verbindung des Linearantriebs mit dem Stellarm des Halteelements gem. Figur 3,

Figur 6

eine Seitenansicht einer zweiten Seite eines Halteelements gem. einer der Ausführungsformen nach den Figuren 1 bis 5 in der Offenstellung ohne Darstellung des Linearantriebs, und

Figur 7

eine Seitenansicht der zweiten Seite des Halteelements gem. Figur 6 in der Zwischenstellung.

Preferred embodiments of a holding element according to the invention are explained in more detail below with reference to the drawings. Show here

FIG. 1

a side view of a first side of a first embodiment of a holding element according to the invention in the open position without representation of the linear damper,

FIG. 2

a side view of the first side of the holding element gem. FIG. 1 in an intermediate position,

FIG. 3

a side view of the first side of a second embodiment of a holding element in the closed position without representation of the linear damper,

FIG. 4

a side view of the first side of the holding element gem. FIG. 3 in an intermediate position,

FIG. 5

an exploded perspective view of the connection of the linear drive with the actuator arm of the holding element. FIG. 3 .

FIG. 6

a side view of a second side of a holding element gem. one of the embodiments according to the FIGS. 1 to 5 in the open position without representation of the linear drive, and

FIG. 7

a side view of the second side of the holding element gem. FIG. 6 in the intermediate position.

The FIGS. 1 to 7 show a holding element according to the invention in different views and different positions and are described together below. In the FIGS. 1 to 5 For the sake of clarity, no linear damper is shown. However, the embodiments shown there have a linear damper, which can be designed as in the FIGS. 6 and 7 shown. Furthermore, the figures 6 and 7 for reasons of clarity no linear drive. However, the embodiment shown there has a linear drive, which can be designed as in the FIGS. 1 to 5 shown.

The holding element has a first fitting part 1, which, as in FIG. 1 shown, can be attached to an inside of a body 2 of a piece of furniture. Furthermore, the holding element comprises a second fitting part 3, which, as also in FIG. 1 shown, can be attached to a cover 4 of the furniture. The cover 4 is connected only via the retaining element with the body 2 and has no hinges. As will be explained later, the lid pivots about an axis of rotation which moves in space and depends on the structure of the holding element.

The holding element has for connection of the lid 4 with the body 2 on a Gelenkarmmechanismus 20, which has a first support arm 5 and a second support arm 6. The first support arm 5 is pivotally attached to the body-side first fitting part 1 and pivotable about a first cover axis 8 on the cover-side second fitting part 3 via a first body axis 7. The second support arm 6 is pivotally attached via a second body axis 9 on the body-side first fitting part 2 and about a second cover axis 10 on the cover-side second fitting part 4.

The support arms 5, 6 are not arranged parallel to each other. This means that a first plane 21, which includes the first body axis 7 and the first lid axis 8, and a second plane 22, which includes the second body axis 9 and the second lid axis 10, intersect in an axis of rotation 11. About this axis of rotation 11, the lid 4 rotates, wherein the axis of rotation 11 moves in space.

The Gelenkarmmechanismus 20 further includes a lever 13 which is pivotally mounted about a pivot axis 14 on the first fitting part 1. The lever 13 is further pivotally connected to a control arm 15 about a third body axis 16. The actuating arm 15 is rotatably connected to the second fitting part 3 via a third cover axis 17. All axes, that is, the first body axis 7, the second body axis 9, the third body axis 16, the first lid axis 8, the second lid axis 10, the third lid axis 17 and the pivot axis 14 are arranged parallel to and spaced from each other.

At the first fitting part 1, a linear drive 12 is provided. The linear drive 12 comprises a tension spring 18, wherein the linear drive 12 has a positioning direction L which is arranged vertically. The tension spring 18 is attached on the one hand, at a vertically upper end, to the first fitting part 1 and supported against this. With a second end, a vertically lower end, the tension spring 18 is supported on the other hand relative to the actuating arm 15. Here, the tension spring 18 engages a hinge 19 between the actuator arm 15 and the lever 13.

The tension spring 18 is always loaded on train and pulls the joint 19 accordingly vertically upwards. The positioning direction L of the linear actuator 12, the force line of action of the Tension spring 18 corresponds, is aligned such that a clockwise torque as shown in the FIG. 1 is generated on the lever 13. As a result, the actuating arm 15 is acted upon upwards with force. It is ensured over the widest possible pivoting range of the lid 4, that cancel the torques exerted by the linear drive 12 and the cover 4, each other, so are in balance, so that the lid 4 is held in the respective pivot position. The pivoting range, in which the cover 4 is held in each pivot position, preferably extends from the open position according to FIG. 1 to a dead center position (intermediate position) according to FIG. 2 in which the force action line 23 of the actuating arm 15, along which the force is introduced from the actuating arm 15 onto the second fitting part 3, intersects with the axis of rotation 11 (this approximately corresponds to the pivoting position according to FIG FIG. 2 ).

Over the pivoting angle range from the open position to the dead center position, the line of action 23 of the actuating arm 15 crosses the axis of rotation 11 about which the lid 4 rotates, so far with a clockwise torque as shown in FIG FIG. 1 is generated on the cover 4. The generated torque acts on the cover 4 thus in the direction of the open position with torque. In the dead center position of the lid 4, the force action line 23 of the actuating arm 15 intersects the lid axis 11, so that no torque is exerted on the lid 4 by the actuating arm 15. Over the swivel angle range from the dead center position to the closed position, the force action line 23 of the actuating arm 15 crosses the axis of rotation 11 at a distance such that a counterclockwise torque as shown in FIG FIG. 1 is generated on the cover 4. The generated torque thus acts on the cover 4 in the direction of the closed position. Thus acts in a swivel angle range shortly before reaching the closed position, a tightening torque on the cover 4, so that the cover 4 is securely transferred to the closed position and held in this.

In order to ensure the most compact possible space, the tension spring 18 is arranged exclusively linearly adjustable on the first fitting part 1. Since the joint 19, against which the tension spring 18 is supported, does not perform a linear movement, but rather a movement along a circular section path about the pivot axis 14, a relative movement transversely to the direction L of the linear drive between the Tension spring 18 and the hinge 19 are compensated.

For this purpose, a pivot pin 24 extending in the direction of the third body axis 16 is provided on the lever 13. Against this, a hook portion 25 of the tension spring 18 is supported axially. The hook portion 25 is designed arcuate and has a diameter which is greater than the outer diameter of the pivot pin 24. Thus, the pivot pin 24 can move transversely to the direction L of the linear drive within the hook portion 25. In FIG. 1 It can be seen that the pivot pin 24 is supported in the representation shown there approximately to the left against a portion of the hook portion 25. In the in FIG. 2 As shown, the pivot pin 24 is located on a rake side of the hook portion 25 of this.

The FIGS. 3 to 5 show an alternative embodiment of the coupling between the linear drive 12 and the actuator arm 15. All other components are or may be identical. The linear drive 12 comprises a lock slider 26, which is axially adjustably guided within a guide receptacle 31 of the first fitting part 1 along the direction of adjustment L of the linear drive. The lock slider 26 has a retaining projection 29, on which the tension spring 18 is attached and is supported against the lock slider 26. In addition, the lock slider 26 has a guide portion 30, by means of which the lock slider 26 is guided within the guide receptacle 31. In addition, the guide portion 30 in longitudinal section according to the FIGS. 3 and 4 U-shaped and vertically upwards, to the tension spring 18 out, open.

In the guide section 30, a guide slide 27 is arranged. This is supported vertically within the guide section 30 against the guide slide 27 and guided transversely to the direction of adjustment L of the linear drive displaceable. In addition, the guide slide 27 is guided in a guide groove 28 of the first fitting part 1. The guide groove 28 extends along a circular portion about the pivot axis 14. The pivot pin 24 penetrates the guide groove 28 as well as the guide slide 27, wherein the guide slide 27 is rotatably mounted on the pivot pin 24. Thus, the force exerted by the tension spring 18 is transmitted via the lock slider 26 and via the guide slide 27 on the pivot pin 24 and thus on the actuator arm 15.

Due to the design of the guide groove 28 about the pivot axis 14, a movement compensation between the linear adjustment movement of the adjusting slide 26 and the movement of the pivot pin 24 is ensured on a circular path about the pivot axis 14.

The retaining element further comprises a linear damper 32, which in the FIGS. 6 and 7 is shown. In the FIGS. 1 to 5 is not shown for reasons of clarity of the linear damper. In the embodiments according to Figure 1 to 5 However, a linear damper according to the FIGS. 6 and 7 intended. In the FIGS. 6 and 7 is not shown for reasons of clarity of the linear drive, according to one of the embodiments according to FIGS. 1 to 5 can be designed.

The linear damper 32 is arranged parallel to the linear drive 12 and has a positioning direction D which is arranged parallel to the positioning direction L of the linear drive 12. The linear damper 32 comprises a damper housing 33 and a damper slide 34 which are axially adjustable relative to each other along the direction of adjustment D of the linear damper 32. The damper housing 33 is guided linearly adjustable in the direction of the adjustment direction D of the linear damper 32 relative to the first fitting part 1. The damper slide 34 is vertically upwards as shown in FIG FIG. 6 axially supported against the first fitting part 1.

In the present embodiment, the damper slide 34 is part of a gas spring, wherein the damper slide 34 comprises a piston rod and a piston which is guided in a cylinder of the gas spring. The cylinder of the gas spring, not visible in the figures, is part of the damper housing 33, wherein the damper housing 33 comprises a plastic guide member in which the cylinder is accommodated.

In the damper housing 33, a groove 35 is provided as a first guide member. The groove 35 extends arcuately and is open to the opening of the body or toward the Gelenkarmmechanismus 20.

On the first support arm 5, a projecting actuating cam 36 is provided as a second guide element, which cooperates with the groove 35 over part of the pivoting path of the holding element. In the in FIG. 6 When the intermediate position of the retaining element and further movement of the retaining element toward the closed position of the actuating cam 36 is inserted into the groove 35 a. In the further course of motion, the holding element is acted upon in the direction of the closed position by the linear drive 12. To dampen this movement, the groove 35 is arranged such that the actuating cam 36, the damper housing 33 moves vertically upwards, wherein the damper slide 34 is supported against the first fitting part 1. This results in a relative movement between the damper housing 33 and the damper slide 34, which dampens the movement of the holding element in the direction of the closed position.

Characterized in that the adjusting direction L of the linear drive and the positioning direction D of the linear damper are arranged parallel to each other and the linear drive 12 and the linear damper 32 are arranged directly adjacent to each other, results in a very small size of the holding element according to the invention, in particular in a direction transverse to the positioning directions L. , D. In addition, linear actuator 12 and linear damper 32 are axially displaceable only in the direction of their actuating directions L, D and are not, as is customary in the art, additionally pivoted. This results in a simple mechanical construction of the retaining element.

In order to adjust the force of the linear actuator 12, it can be provided that the pivot point of the tension spring 18 vertically above, on which the tension spring 18 is supported against the first fitting part 1 and secured thereto, in the vertical direction, ie in the direction of the L of the linear drive 12, is adjustable in position. Thus, the bias of the tension spring 18 can be adjusted and the force with which the linear drive 12 acts on the actuating arm 15, vary in order to adapt the holding element to different lid weights.

LIST OF REFERENCE NUMBERS

1

first fitting part

2

corpus

3

second fitting part

4

cover

5

first support arm

6

second support arm

7

first carcass axis

8th

first lid axis

9

second body axis

10

second lid axis

11

axis of rotation

12

linear actuator

13

lever

14

swivel axis

15

actuating arm

16

third body axis

17

third axis of rotation

18

mainspring

19

joint

20

articulated arm

21

first floor

22

second level

23

Force action line of the actuator arm

24

pivot pin

25

hook section

26

lock slider

27

pilot valve

28

guide

29

retaining projection

30

guide section

31

guide seat

32

linear damper

33

damper housing

34

damper slide

35

groove

36

actuating cam

L

Positioning direction of the linear drive

D

Positioning direction of the linear damper

Claims (14)

Retaining element for adjusting a lid of a piece of furniture, wherein the holding element has the following: a first fitting part (1) which can be connected to the body (2) of a piece of furniture, a second fitting part (3) which can be connected to the cover (4), an articulated arm mechanism (20) having at least one actuating arm (15) and a first support arm (5), wherein via the Gelenkarmmechanismus (20), the first fitting part (1) and the second fitting part (3) connected to each other between a closed position and an open position pivotally are, a linear drive (12), which is at least indirectly supported on the one hand against the first fitting part (1) and on the other hand against the actuating arm (15) and the actuating arm (15) acted upon with force, and a linear damper (32) for damping the movement of the articulated arm mechanism (20), characterized, that the linear damper (32) is supported on the one hand against the first fitting part (1) and on the other hand coupled to the Gelenkarmmechanismus (20) over at least part of the pivoting path and is supported against this and that an adjusting direction (L) of the linear drive (12) to a direction of adjustment parallel (D) of the linear damper (32) is arranged. Retaining element according to claim 1,
characterized
that for coupling of the linear damper (32) to the articulated arm mechanism (20) of the linear damper (32) with the first support arm (5) is coupled via at least a part of the pivoting path and is supported against the first supporting arm (5). Retaining element according to one of the preceding claims,
characterized
that the linear drive (12) is designed in the form of a spring accumulator. Retaining element according to claim 3,
characterized,
that the spring comprises a tension spring (18). Retaining element according to one of the preceding claims,
characterized,
in that the articulated arm mechanism (29) also has a second support arm (6),
that the first support arm (5) about a first body axis (7) pivotally mounted on the first fitting part (1) and about a first lid axis (8) is pivotally mounted on the second fitting part (3), and
in that the second support arm (6) is fastened pivotably around a second carcass axis (8) on the first fitting part (1) and pivotably about a second cover axis (10) on the second fitting part (3). Retaining element according to claim 5,
characterized
that the articulated arm mechanism (29) further comprises a lever (13), that the lever (13) about a pivot axis (14) is pivotally mounted on the first fitting part (1), and
in that the actuating arm (15) is pivotably connected to the lever (13) at a distance from the pivot axis (14) via a hinge (19) and is pivotably attached to the second fitting part (3) about a third cover axis (17). Retaining element according to claim 6,
characterized
that the linear drive (12) engages the hinge (19). Retaining element according to claim 7,
characterized,
that the lever (13) has a pivot pin (24) on which the actuating arm (15) is pivotally mounted and
that the linear drive (12) on the pivot pin (24) is supported. Retaining element according to claim 8,
characterized,
that the linear drive (12) has a locking slide (26), which is guided axially displaceably on the first fitting part (1) in the adjusting direction (L) of the linear drive (12), and
in that the linear drive (12) has a tension spring (18) which is supported on the one hand on the first fitting part (1) and on the other hand on the adjusting slide (26). Retaining element according to claim 9,
characterized,
in that the linear drive (12) has a guide slide (27) which is displaceably guided on the adjusting slide (26) transversely to the adjusting direction (L) of the linear drive (12) and which is pivotally mounted on the pivot pin (24). Retaining element according to claim 10,
characterized,
in that the guide slide (27) is guided in a guide groove (28) of the first fitting part (1), wherein the guide groove (28) runs along a movement path of the articulation (19) between actuating arm (15) and lever (13). Retaining element according to one of the preceding claims,
characterized,
that the linear damper (32) has a damper housing (33) and a damper slide (34), which in the adjustment direction (D) of the linear damper (32) are mutually axially adjustable, and
in that the damper housing (33) is axially adjustably guided in the adjustment direction (D) of the linear damper (32) on the first fitting part (1) and in that the damper slide (34) is axially supported against the first fitting part (1). Retaining element according to one of the preceding claims,
characterized,
in that the damper housing (33) has a first guide element (35) which is coupled to a second guide element (36) of the hinge mechanism (20) via at least part of the pivoting path of the articulated arm mechanism (20). Retaining element according to one of the preceding claims,
characterized,
in that the damper housing (33) has a groove (35) in which an actuating cam (36) of the first support arm (5) engages over at least part of the pivoting path of the articulated arm mechanism (20).

Images