CN216932458U - Adjusting device for a headrest - Google Patents
Adjusting device for a headrest Download PDFInfo
- Publication number
- CN216932458U CN216932458U CN202123085999.9U CN202123085999U CN216932458U CN 216932458 U CN216932458 U CN 216932458U CN 202123085999 U CN202123085999 U CN 202123085999U CN 216932458 U CN216932458 U CN 216932458U
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- CN
- China
- Prior art keywords
- headrest holder
- headrest
- holder
- rotation
- adjustment device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/38—Support for the head or the back for the head
Abstract
An adjustment device for a headrest according to the present invention has: at least one first headrest holder for holding a headrest; at least one fixed first mounting plate on which the first headrest holder is held so as to be pivotable about a first rotation axis; a drive unit having a drive element linearly adjustable along a fixed spatial axis between an initial position and an end position; and a coupling element hinged at one end to the drive element and at the other end to the first headrest holder, wherein linear movement of the drive element causes the first headrest holder to rotate about the first axis of rotation. Furthermore, the stop element is in contact with the coupling element or the first headrest holder in the intermediate position of the drive element and blocks the coupling element from further rotation relative to the first headrest holder between the intermediate position and the end position.
Description
Technical Field
The utility model relates to an adjustment device for a headrest, in particular for a headrest of a one-piece seat or reclining furniture.
Background
For seating or reclining furniture, such as armchairs or sofas, the tilting of the headrest can often be motorized. DE 202016102413U 1 discloses an automatic retaining system for a headrest, which has a first pivot part which is pivotably retained on a fastening plate. The head rest is pushed onto the first pivot part by means of the plug-in part and can be detached therefrom, for example for cleaning purposes. The pivoting takes place by actuating a linear drive member, the drive rod of which is connected in an articulated manner to the first pivot member via a connecting portion and a coupling element. The end of the linear drive member remote from the connecting portion is pivotably held on the fastening plate in order to be able to perform a compensating movement during a tilt adjustment of the headrest. However, the pivoting movement of the drive member requires additional space. Furthermore, this solution is relatively complex, because of the large number of articulation points and the inclination of the headrest can only be adjusted within a very limited angular range.
DE 2932344 a1 relates to a device for adjusting a headrest for a dental patient seat design. In this known device, the linear drive unit has a drive element which is linearly adjustable along a fixed spatial axis and is connected in an articulated manner to the headrest holder via a coupling element. Since the drive unit is also stationary during the tilt adjustment, the drive unit requires less installation space in the region of the drive unit. The significant reduction in the number of pivot points also makes the production more cost effective. However, in this solution, the pivoting range of the headrest is also relatively limited.
SUMMERY OF THE UTILITY MODEL
It is therefore an object of the utility model to specify a compact adjustment device for a headrest, which has a large adjustment range for its inclination.
An adjusting device for a headrest according to the present invention has at least one fixed first mounting plate to which a first headrest holder is fixed so that the first headrest holder is pivotable about a first rotation axis. Furthermore, a drive unit is provided, which has a drive element which is linearly adjustable along a fixed spatial axis between an initial position and an end position, wherein the coupling element is hinged at one end to the drive element and at the other end to the first headrest holder, such that a linear movement of the drive element causes the first headrest holder to rotate about the first axis of rotation. The adjusting device also has a stop element which, in the intermediate position of the drive element, is in contact with the coupling element or the first headrest holder and further rotation of the coupling element relative to the first headrest holder is blocked between the intermediate position and the end position.
The stop element allows pivoting of the headrest beyond a dead point, thereby significantly increasing the pivot angle. In particular, the pivot angle of the first headrest holder between the initial position and the end position may be realized as 140 ° +/-20 °, preferably as 140 ° +/-10 °, most preferably as 140 ° +/-5 °. The pivoting angle of the first headrest holder may assume 90 ° +/-20 °, preferably 90 ° +/-10 °, most preferably 90 ° +/-5 °, between the initial position and the intermediate position. Further, the pivot angle of the first headrest holder may be 50 ° +/-20 °, preferably 50 ° +/-10 °, most preferably 50 ° +/-5 °, between the intermediate position and the end position.
The fixed alignment of the drive unit, even during the pivoting process, and the small number of parts and hinge points required for the pivoting movement allow a compact and cost-effective adjustment device to be manufactured. In connection with the present invention, the term "fixed" is to be understood as rigidly fastened to a component, in particular to the backrest of a one-piece seat or reclining furniture, such as a sofa, armchair or a bed to which a headrest is pivotably fixed.
According to a preferred embodiment of the utility model, a stop element is arranged on the first headrest holder and is in contact with the coupling element between the intermediate position and the end position of the drive element. The fixed spatial axis of the drive element can be implemented, for example, by arranging a guide for the linearly adjustable drive element on the first mounting plate. However, other configurations are also conceivable, in which the drive unit is arranged in a fixed manner relative to the first mounting plate.
In an alternative embodiment, the first extension element is hinged at an end of the first headrest holder remote from the first axis of rotation, the extension element being pivotable relative to the first headrest holder between retracted and extended positions. The first extension element can be coupled to the first headrest holder via at least one first pivot mechanism, which is preferably designed in the manner of a parallelogram guide. According to another embodiment, a first linkage arm for adjusting the first extension element may be provided, which first linkage arm is connected at one end to the first pivot mechanism and is hinged at the other end, directly or indirectly, to the first mounting plate. The extension element provides the possibility of further extending the headrest in the position of use, while it can be folded down to save space in the idle position.
In order to hold the headrest expediently on both sides, a second headrest holder is provided which is pivotable on the second mounting plate about a second axis of rotation, the first and second headrest holders also being arranged at a distance from one another in such a way that the first and second axes of rotation are aligned. The first headrest holder and the second headrest holder may be connected to each other, in particular via a headrest, to ensure synchronous adjustment. In this case, however, it is sufficient that the drive unit is connected to only the first headrest holder via the first coupling element. If the optional first elongate member is present, the second elongate member will also be hinged to the second headrest holder at an end remote from the second axis of rotation. In this embodiment, the first and second extension elements are connected to each other for synchronous adjustment, in particular via the headrest.
Further configurations of the present invention will be explained in more detail with reference to the following description.
Drawings
In the drawings:
fig. 1 is an exploded view of a device according to the utility model, according to a first embodiment,
fig. 2 is a schematic side view of the first embodiment in an initial position of the drive element,
fig. 3 is a schematic side view of the first embodiment in an intermediate position of the drive element,
fig. 4 is a schematic side view of the first embodiment in the end position of the drive element,
fig. 5 is a schematic side view of a second embodiment of the device according to the utility model in an initial position of the drive element,
fig. 6 is a schematic side view of the second embodiment in an intermediate position of the drive element,
fig. 7 is a schematic side view of the second embodiment in the end position of the drive element.
Detailed Description
The adjusting device for a headrest shown in fig. 1 has a first headrest holder 1 and a fixed first mounting plate 2, the first headrest holder 1 being used to hold a headrest, and the first headrest holder 1 being held on the fixed first mounting plate 2 such that the first headrest holder 1 is pivotable about a first rotation axis 3. Furthermore, a drive unit 4 is provided, which drive unit 4 has a linearly adjustable drive element 5. The guide 6 of the linearly adjustable drive element 5 is fastened to the first mounting plate 2 by means of screws 7. The end 8 of the drive unit 4 remote from the linearly adjustable drive element 5 is fixed on a holder 9, wherein this end 8 is pushed onto a pin 10 and locked with a locking ring 11. The holder 9 is also arranged in a fixed manner and may also be formed, for example, by extending the first mounting plate 2.
The connection between the linearly adjustable drive element 5 and the first headrest holder 1 is formed by a coupling element 12, which coupling element 12 has a pin 13 at one end, by means of which pin 13 the coupling element 12 is hinged to the drive element 5 and is fixed by means of a locking ring 14. The other end of the link member 12 is hinged to the first headrest holder 1 at a hinge point 15.
In fig. 2 to 4, the first mounting plate 2 and the retaining element 9 are fastened to a component 16, which component 16 is, for example, a backrest of a seat or reclining furniture. The drive unit 1 held on the holder 9 and the guide 6 is therefore arranged in a fixed manner relative to the component 16, so that the adjustment of the linearly adjustable drive element 5 of the drive unit 1 takes place along the fixed spatial axis 17 between an initial position (fig. 2) and an end position (fig. 4).
The headrest 18 is fastened to the first headrest holder 1 and is adjusted from the folded-back position shown in fig. 2 via an intermediate position (fig. 3) to the forwardly tilted position shown in fig. 4, although every other intermediate position may also be assumed. During the linear movement of the drive element 5, the first headrest holder 1 rotates with the headrest 18 about the hinge point 15 and in this way changes the inclination of the headrest 18.
The head restraint 18 is folded back in fig. 2 and is aligned substantially horizontally. During adjustment between the initial position shown in fig. 2 and the intermediate position shown in fig. 3, the coupling element is freely movable in the region of the pin 13 and the hinge point 15. In the neutral position of fig. 3, the head rest 18 is pivoted upwardly at an angle α of about 90 ° and is thus oriented substantially vertically. The pin 13 and the articulation point 15 lie on a fixed spatial axis 17, in the direction of which fixed spatial axis 17 the drive element 5 can be adjusted. In this position, the coupling element is in contact with a stop element 19 arranged on the first headrest holder 1, the stop element 19 being arranged such that, upon further adjustment of the headrest 18 into the end position shown in fig. 4, this stop element 19 blocks the rotation of the coupling element 12 relative to the first headrest holder 1. In this way, the headrest 18 or the first headrest holder 1 can be tilted forward by an angle β of about 50 °, resulting in a total pivot angle (α + β) of about 140 °.
In the exploded view of fig. 1, the adjusting device also has a second headrest holder 20, which second headrest holder 20 is pivotable on a second mounting plate 21 about a second axis of rotation 22, the first and second headrest holders also being arranged at a distance from one another, in particular on the backrest of a seat or of a piece of furniture for tilting, in such a way that the first axis of rotation 3 and the second axis of rotation 22 are aligned. For synchronous adjustment of the first headrest holder 1 and the second headrest holder 20, they are connected to each other via a headrest 18 (not shown).
Fig. 5 to 7 show a second embodiment of an adjustment device for a headrest according to the utility model, which differs from the first embodiment in that a first extension element 23 is hinged to the first headrest holder 1 at an end remote from the first axis of rotation 3, the first extension element 23 being pivotable relative to the first headrest holder 1 between a retracted position (fig. 5) and an extended position (fig. 7). The first extension element 23 is held on the first headrest holder 1 via a first pivot mechanism 24, which first pivot mechanism 24 is designed in the embodiment shown with two lever arms 24a, 24b in the manner of a parallelogram guide. Two lever arms 24a, 24b aligned parallel to each other are hinged at one end to the first headrest holder and at the other end to the first extension element 23.
For adjusting the first extension element 23, a first linkage arm 25 is provided, one end of which first linkage arm 25 is hinged to the first pivoting means 24, in this case to the lever arm 24b of the first pivoting means 24, and the other end of which first linkage arm 25 is hinged to a hinge point 26 provided on the first mounting plate 2. Fig. 5 again shows the position in which the head rest 18 is folded back, while fig. 6 shows the intermediate position and fig. 7 shows the end position in which the head rest 18 is tilted forward. The rotational movement of the first headrest holder 1 corresponds to the rotational movement of the first embodiment via the coupling element 12 and the linearly adjustable drive element 5. During the rotation, the coupling of the first pivot mechanism 24 with the first coupling arm 25 causes the first extension element 23 to pivot relative to the first headrest holder 1 in the sense that the extension amount of the first headrest holder 1 is a (fig. 7). Thus, in the forwardly tilted position the headrest 18 reaches a slightly greater distance from the seat surface, whereas in the rearwardly folded position it is relatively compactly arranged and does not project excessively rearwardly beyond the backrest (part 16).
In a corresponding manner, a second extension element (not shown) is hinged to the second headrest holder 20 (fig. 1) at an end remote from the second axis of rotation 22, the first extension element 23 and the second extension element being connected to each other, in particular being synchronously adjusted via the headrest 18.
Claims (20)
1. Adjustment device for a headrest (18), having:
-at least one first headrest holder (1), the first headrest holder (1) being for holding the headrest (18),
-at least one fixed first mounting plate (2), on which fixed first mounting plate (2) the first headrest holder (1) is held, such that the first headrest holder (1) is pivotable about a first axis of rotation (3),
-a drive unit (4), the drive unit (4) having a drive element (5), the drive element (5) being linearly adjustable along a fixed spatial axis (17) between an initial position and an end position, and
-a coupling element (12), which coupling element (12) is hinged at one end to the drive element (5) and at the other end to the first headrest holder (1), wherein a linear movement of the drive element (5) causes a rotation of the first headrest holder (1) about the first axis of rotation (3),
characterized by a stop element (19), said stop element (19) being in contact with said coupling element (12) or said first headrest holder (1) in an intermediate position of said drive element (5), and said stop element (19) blocking further rotation of said coupling element (12) with respect to said first headrest holder (1) between said intermediate position and said end position.
2. The adjusting apparatus according to claim 1, characterized in that the stop element (19) is arranged on the first headrest holder (1) and is in contact with the coupling element (12) between the intermediate position and the end position of the drive element (5).
3. Adjustment device according to claim 1, characterized in that the pivoting angle (a) of the first headrest holder (1) between the initial position and the intermediate position is 90 ° +/-20 °.
4. Adjustment device according to claim 1, characterized in that the pivoting angle (a) of the first headrest holder (1) between the initial position and the intermediate position is 90 ° +/-10 °.
5. Adjustment device according to claim 1, characterized in that the pivoting angle (a) of the first headrest holder (1) between the initial position and the intermediate position is 90 ° +/-5 °.
6. Adjustment device according to claim 1, characterized in that the pivoting angle (β) of the first headrest holder (1) between the intermediate position and the end position is 50 ° +/-20 °.
7. Adjustment device according to claim 1, characterized in that the pivoting angle (β) of the first headrest holder (1) between the intermediate position and the end position is 50 ° +/-10 °.
8. Adjustment device according to claim 1, characterized in that the pivoting angle (β) of the first headrest holder (1) between the intermediate position and the end position is 50 ° +/-5 °.
9. Adjustment device according to claim 1, characterized in that the pivoting angle of the first headrest holder (1) between the initial position and the end position is 140 ° +/-20 °.
10. Adjustment device according to claim 1, characterized in that the pivoting angle of the first headrest holder (1) between the initial position and the end position is 140 ° +/-10 °.
11. Adjustment device according to claim 1, characterized in that the pivoting angle of the first headrest holder (1) between the initial position and the end position is 140 ° +/-5 °.
12. Adjusting device according to claim 1, characterized in that a guide (6) for the linearly adjustable drive element (5) is arranged on the first mounting plate (2).
13. Adjusting device according to claim 1, characterized in that the drive unit (4) is fixedly arranged relative to the first mounting plate (2).
14. Adjustment device according to claim 1, characterized in that a first extension element (23) is hinged to the first headrest holder (1) at an end remote from the first axis of rotation (3), the first extension element (23) being pivotable relative to the first headrest holder (1) between a retracted position and an extended position.
15. The adjusting apparatus according to claim 14, characterized in that the first extension element (23) is coupled to the first headrest holder (1) via at least one first pivot mechanism (24).
16. Adjusting device according to claim 15, characterized in that the first pivoting means (24) are designed in the manner of a parallelogram guide.
17. Adjusting device according to claim 15, characterized in that a first coupling arm (25) is provided, which first coupling arm (25) is used for adjusting the first extension element (23), which first coupling arm (25) is connected at one end to the first pivot mechanism (24) and is hinged at the other end directly or indirectly to the first mounting plate (2).
18. Adjusting device according to claim 1, characterized in that a second headrest holder (20) is provided, which second headrest holder (20) is pivotable on a second mounting plate (21) about a second axis of rotation (22), which first headrest holder (1) and which second headrest holder (20) are furthermore arranged at a distance from one another in such a way that the first axis of rotation (3) and the second axis of rotation (22) are aligned.
19. Adjustment device according to claim 18, characterized in that the first headrest holder (1) and the second headrest holder (20) are connected to each other for synchronous adjustment.
20. Adjusting device according to claim 18, characterized in that a second extension element is hinged to the second headrest holder (20) at an end remote from the second axis of rotation (22), the first extension element (23) and the second extension element being connected to each other for synchronous adjustment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202021100215.8U DE202021100215U1 (en) | 2021-01-18 | 2021-01-18 | Adjustment device for a headrest |
| DE202021100215.8 | 2021-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216932458U true CN216932458U (en) | 2022-07-12 |
Family
ID=74686425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123085999.9U Active CN216932458U (en) | 2021-01-18 | 2021-12-09 | Adjusting device for a headrest |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4029409B1 (en) |
| CN (1) | CN216932458U (en) |
| DE (1) | DE202021100215U1 (en) |
| ES (1) | ES2963167T3 (en) |
| PL (1) | PL4029409T3 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2932344A1 (en) | 1979-08-09 | 1981-02-26 | Ritter Ag | Dentists chair head rest adjusting mechanism - has triangular linkage and guide members slid by servomotors in backrest |
| US5640730A (en) * | 1995-05-11 | 1997-06-24 | Maxwell Products, Inc. | Adjustable articulated bed with tiltable head portion |
| DE102014100303A1 (en) * | 2014-01-13 | 2015-07-16 | Ferdinand Lusch Gmbh & Co. Kg | Seating furniture with motorized swiveling headboard |
| US9282827B1 (en) * | 2015-01-30 | 2016-03-15 | Dongguan Weihong Hardware And Plastic Products Co., Ltd. | Lifting stand for adjusting headrest |
| DE102015119326A1 (en) * | 2015-11-10 | 2017-05-11 | Ferdinand Lusch Gmbh & Co. Kg | Seating furniture with a separate and swiveling headboard |
| CN105534136B (en) | 2016-01-25 | 2018-09-11 | 东莞市伟宏五金塑胶制品有限公司 | Automatic lifting pillow |
-
2021
- 2021-01-18 DE DE202021100215.8U patent/DE202021100215U1/en active Active
- 2021-11-04 EP EP21206340.8A patent/EP4029409B1/en active Active
- 2021-11-04 ES ES21206340T patent/ES2963167T3/en active Active
- 2021-11-04 PL PL21206340.8T patent/PL4029409T3/en unknown
- 2021-12-09 CN CN202123085999.9U patent/CN216932458U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE202021100215U1 (en) | 2021-02-04 |
| EP4029409B1 (en) | 2023-11-01 |
| ES2963167T3 (en) | 2024-03-25 |
| PL4029409T3 (en) | 2024-02-05 |
| EP4029409A1 (en) | 2022-07-20 |
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