HEADREST

Abstract

A headrest with a head contact part, which can be moved between a front and a rear position by an adjustment device, wherein the adjustment device includes at least one link. The link forms at least one joint with the retaining device and at least one joint with the head contact part. The adjustment device includes an adjustment housing that at least partially covers the at least one link. The adjustment housing is motion-connected to the retaining device in such a way that it can follow a movement of the links.

Claims

1-14. (canceled)

15. A headrest, comprising: an adjustment device; a retaining device; and a head contact part movable between a front and a rear position by the adjustment device, wherein the adjustment device comprises at least one link that forms at least one joint with the retaining device and at least one joint with the head contact part, wherein the adjustment device further comprises an adjustment housing that at least partially covers the at least one link, wherein the adjustment housing is motion-connected to the retaining device so that the adjustment device follows a movement of the at least one link.

16. The headrest according to claim 15, wherein the adjustment housing has at least two housing parts including a first housing part that is movable relative to a second housing part.

17. The headrest according to claim 15, wherein the adjustment housing (25) is configured as a unit.

18. The headrest according to claim 16, wherein at least one of the housing parts is connected to the at least one link.

19. The headrest according to claim 16, wherein the at least one link includes a first link and a second link, wherein the first housing part is connected to the first link and the second housing part is connected to the second link, wherein the housing parts are movable relative to one another.

20. The headrest according to claim 16, wherein at least one of the housing parts forms a joint with the retaining device.

21. The headrest according to claim 20, wherein the first housing part forms a first joint and the second housing part forms a second joint with the retaining device.

22. The headrest according to claim 20, wherein at least one of the housing parts forms a joint with the head contact part.

23. The headrest according to claim 20, wherein at least one of the housing parts is connected to another of the housing parts.

24. The headrest according to claim 16, wherein the first housing part is securely connected to the at least one link and the second housing part forms a joint with the retaining device or with the head contact part, wherein the second housing part is connected to the first housing part.

25. The headrest according to claim 20, wherein the joint is a translational guide and rotary guide.

26. The headrest according to claim 16, wherein at least one of the housing parts is configured to be cup-like.

27. The headrest according to claim 15, wherein the adjustment device comprises at least two links that each form a four-link joint with the retaining device and the head contact.

28. The headrest according to claim 15, wherein the head contact part has a head contact housing that at least partially overlaps the adjustment housing and is movable relative to the adjustment housing.

Description

[0029] In the figures:

[0030] FIG. 1 shows a perspective view of a first exemplary embodiment of a headrest from diagonally in front, wherein a head contact part is moved into a front position and is arranged in a lower end position relative to an adjustment device,

[0031] FIG. 2 shows a perspective view of the headrest according to claim 1 from diagonally behind,

[0032] FIG. 3 shows a front view of the headrest according to FIG. 1,

[0033] FIG. 4 shows a sectional view according to the sectional line A-A in FIG. 3, wherein the head contact part is arranged in a lower end position,

[0034] FIG. 5 shows a sectional view according to FIG. 4, wherein the head contact part is arranged in an upper end position,

[0035] FIG. 6 shows a sectional view according to FIG. 4, wherein the head contact part is in a position between the front and rear end positions,

[0036] FIG. 7 shows a sectional view according to FIG. 5, wherein the head contact part is in a rear position,

[0037] FIG. 8 shows a headrest according to a second exemplary embodiment of the invention in a rear position,

[0038] FIG. 9 shows the headrest according to FIG. 8 in the front position.

[0039] The headrest according to a first exemplary embodiment of the invention is indicated with the reference numeral 10 in the figures.

[0040] The headrest 10 comprises a retaining device 11 with which the headrest 10 can be fixed to a vehicle seat. In the present exemplary embodiment, the retaining device 11 comprises retaining elements 12a and 12b, which can be fixed to the seat structure. In addition, the headrest 10 comprises a head contact part 13 with a head contact surface 14, which forms a support for the head of the seat occupant. The head contact part 13 is adjustable between a front and a rear position with respect to an X-direction by means of an adjustment device 20. In addition, the head contact part 13 can be adjusted in the Z-direction between an upper and a lower position.

[0041] The front position is shown in FIGS. 1 to 5 and the rear position is shown in FIG. 7. FIG. 6 shows an intermediate position between the rear position and the front position.

[0042] According to FIG. 4, the adjustment device 20 comprises links 15 and 16. The link 15 forms a joint 17 with the retaining device 11 with the pivot axis a1 as well as a joint 21 with an attachment 19 of the head contact part 13 with the pivot axis a2. The link 16 also forms a joint 18 with the retaining device 11 with the pivot axis a3, as well as a joint 22 with an attachment 19 of the head contact part 13 with the pivot axis a4. The links 15 and 16 form a four-link joint 23 with which the attachment 19 is moved on a coupling curve between the rear position and the front position.

[0043] The head contact part 13 comprises a head contact housing 24 and the adjustment device 20 comprises an adjustment housing 25. The head contact housing 24 is provided with an opening 26 such that the adjustment housing 25 can engage in the opening 26 and thus there is no gap between the head contact housing 24 and the adjustment housing 25 in any position of the head contact part 13.

[0044] The adjustment housing 25 is formed by two housing shells 27a and 27b that are securely connected to one another so that they form one unit. In this embodiment, the housing shells 27a and 27b are immovable relative to one another. The adjustment housing 25 is securely connected to the link 15. Therefore, when the head contact part 13 moves between the rear position and the front position, it swivels with the link 15 (see FIGS. 4, 6 and 8). An interior space 28 of the adjustment housing 25 is formed such that the links 15 and 16 and, in this exemplary embodiment, also at least a part of the attachment 19 are accommodated in the adjustment housing 25.

[0045] As an aside, the attachment 19 comprises first guide means that cooperate with second guide means of the head contact part 13 to adjust the head contact part 13 in the z-direction and form a height adjustment device 30. FIG. 4 shows the lower end position and FIG. 5 shows the upper end position of the head contact part 13. The head contact housing 24 does not move in the z-direction, for example, when the head contact part 13 is adjusted in height relative to the attachment 19.

[0046] According to an alternative embodiment, the adjustment housing 25 forming a unit is securely connected to the link 16, while it is not connected to the link 15. The adjustment device 20 is designed as in the first exemplary embodiment. This embodiment is not shown.

[0047] In an alternative further embodiment, the adjustment housing 25 is formed from two parts 27a and 27b that are movable relative to one another, wherein a front housing part 27a is attached to the front link 15 and a rear housing part 27b is attached to the rear link 16. The adjustment device 20 is designed as in the first exemplary embodiment. This embodiment is also not shown.

[0048] A further exemplary embodiment is shown in FIGS. 9 and 10. The adjustment device 20 is designed as in the first exemplary embodiments. A link 15 forms a joint 17 and a link 16 forms a joint 18 with a retaining device 11, which is securely connected to a structure of the backrest 34. The link 15 further forms a joint 21 and the link 16 forms a joint 22 with an attachment 19 of the head contact part 13.

[0049] In this case, the adjustment housing 25 is formed by two housing shells 27a and 27b, which are securely connected to one another such that they cannot be moved. The links 15 and 16 and the attachment 19 are covered by the adjustment housing 25 and are therefore shown with dashed lines. A rear end position of the adjustment device 20 is shown in FIG. 8 and a front end position is shown in FIG. 9.

[0050] The adjustment housing 25 forming a movement unit forms a joint 29 with the retaining device 11. The joint 29 has the swivel axis a5. In addition, the attachment 19 forms a carrier 31 that engages with a counter carrier 32 of the adjustment housing, wherein the carrier and counter carrier 32 form a joint 33. In this case, the carrier is formed by a pin and the counter carrier is formed by an elongated hole in which the pin engages.

[0051] Due to the joint 33 in the upper area of the adjustment housing 25, the adjustment housing 25 is carried along the swivel axis a5 of the joint 29. The elongated hole provides the pin with sufficient degrees of freedom, which are necessary for the movement due to the different movements of the pin and the adjustment housing 25. The adjustment housing 25 is designed in such a way that the links 15 and 16 and the attachment 19 have space therein in all positions.

[0052] Swiveling the adjustment housing 25 means that the interior space 28 must have less volume than with a fixed adjustment housing 25.

[0053] In this second embodiment, only a z-position of the head contact part 13 is shown, but this embodiment may be formed with a head contact part 13 fixed relative to the attachment 19 or alternatively with a height adjustment device 30 with a head contact part 13 adjustable in the z-direction relative to the attachment 19.