Headrest for a vehicle seat
The headrest design with a guide rod and recessed yoke system addresses the limitation of existing designs by enhancing flexibility and stability, enabling a more versatile and aesthetically pleasing headrest configuration.
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- GRAMMER AG
- Filing Date
- 2014-10-16
- Publication Date
- 2026-05-21
AI Technical Summary
Existing headrest designs limit design flexibility and aesthetics due to the mounting mechanism of the headbox on support rods, restricting the overall appearance and functionality.
A headrest design featuring a guide rod integrated into a yoke connecting two support rods, allowing vertical adjustment of the headbox with a recessed guide that provides stable guidance and prevents rotation, enabling greater design freedom.
Enhances design flexibility and stability of the headbox, allowing for a narrower profile in the upper position while maintaining smooth vertical movement and preventing rotation, thus improving aesthetic and functional possibilities.
Smart Images
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Abstract
Description
[0001] The invention relates to a headrest. Such a headrest is known from prior use. The headrest comprises a headbox which is vertically height-adjustable relative to two support rods between an upper and a lower position. The headbox has sliding bearings for mounting on the support rods, which are formed in both side regions of the headbox. The bearings are, for example, long and extend over a substantial part of the height of the headbox to ensure sufficient guidance. According to an alternative embodiment, the bearings are short. In this case, for example, two bearings, a lower and an upper one, are provided on each side of the headbox for guidance on the support rods.
[0002] The headrest according to DE 20 2009 013 635 U1 comprises two guide rods connected to each other by a horizontal yoke. A headrest box includes an upper strut and a lower strut, the lower strut being guided on the support rods by being threaded through them. At least one locking rod is attached to the upper and lower struts of the headrest box, extending parallel to the guide rods. In a locked position, the locking rod engages a locking contour, and in an unlocked position, it is disengaged from the locking contour.
[0003] The headrest according to DE 10 2011 014 080 A1 comprises a support bracket with two parallel side struts and a crossbar. An internal thread is formed in the crossbar, into which an external thread of a motor-driven screw spindle engages. The screw spindle is mounted on the base of a headrest housing, the height of which can be adjusted by rotating the screw spindle.
[0004] German patent application DE 10 2007 048 152 B3 describes a headrest comprising a support bracket with two support rods and a crossbar connecting them. The headrest also includes a headbox, which in turn includes a crossbeam supporting the headbox. The crossbeam has openings through which the support rods pass, guiding the headbox along the support rods. A locking shaft is rotatably mounted on the crossbeam between a locked and a unlocked position. In the locked position, teeth on the locking shaft engage in recesses formed by an opening in the crossbar. In the unlocked position, the locking shaft is rotated so that the teeth are disengaged from the recesses.
[0005] The operating principle of DE 10 2009 004 554 A1 corresponds to that of DE 10 2007 048 152 B3.
[0006] According to DE 10 2010 061 308 B4, the headrest 1 is mounted on support rods 2, which are held in backrest-mounted bearings. The headrest 1 is movable relative to the support rods 2. For this purpose, the headrest 1 has bores 311 with bushings 61, 62, which are slidably guided on the support rods 2.
[0007] A crossbeam 4 with two rows of catches 42 is mounted at the ends of the support rods 2. A locking mechanism 5 includes a slider 55, which is movably guided on the headrest 1. The slider 55 includes teeth 51 that engage with the catches 42. A spring biases the slider 55 in engagement with the catches 42.
[0008] In this case, the mounting of the headbox on the support rods influences the design possibilities of the headbox.
[0009] The purpose of the invention was to create a headrest that allows for a freer design of the head box and thus of the entire headrest.
[0010] The invention was solved by a headrest having the features of claim 1.
[0011] The headrest comprises a headbox which, at its lower end, is vertically adjustable relative to a first support rod by means of a first guide and a second guide on a second support rod. At least one guide rod extending approximately vertically is attached to the headbox. This guide rod is guided in a recess in a yoke connecting the first and second support rods. The headbox is thus also guided at its upper end. The guide rod and the recess can be arranged variably in the horizontal plane, allowing for greater design flexibility in the headrest.
[0012] One embodiment is characterized in that the guide rod is arranged horizontally between the first guide and the second guide. In this case, the guide recess is formed between the support rods or their longitudinal axes on the yoke.
[0013] A further development of the invention provides that the guide recess, viewed in the direction of travel, is formed approximately in a central region of the yoke. The guide rod is then also formed in a central region of the headbox.
[0014] Another embodiment is characterized in that the guide rod rests against a flange of the guide recess essentially over its entire circumference. The guide recess is formed, for example, by an opening in the yoke, and the guide rod is guided, for example, entirely by a flange of the opening.
[0015] The guide rod can have any cross-sectional shape. For example, a roughly circular, oval, rectangular, or square cross-section is suitable. A cross-section resembling a rectangle has the advantage of preventing the head box from rotating around a vertical axis.
[0016] One embodiment of the invention is characterized in that the yoke is approximately U-shaped or V-shaped and that a central area is located further away from the headrest than the outer areas of the yoke adjacent to the support rods. If the guide recess is arranged in the central area, the headrest thus also has good guidance and support in the upper positions of the headrest, because the upper guide, formed by the guide rod and the guide recess, is spaced apart from the lower guides.
[0017] Further advantages become apparent from an exemplary embodiment shown in the figures. These show: Fig. 1 a front view of the headrest according to the invention, wherein the head box is in the lowest position and wherein the head cushion is not shown, Fig. 2 the headrest based on Fig. 1, with the headbox in the uppermost position.
[0018] In the figures, a headrest as a whole is designated by reference numeral 10. Identical reference numerals in different figures denote corresponding parts.
[0019] The headrest 10 comprises a head box 11, which is adjustable in direction z1 and z2 on a support rod bracket 12. From the in Fig. In the lower position shown in Figure 1, the headbox 11 can be moved in the direction of z1 to the upper position. From the position shown in Figure 1, the headbox 11 can be moved in the direction of z1 to the upper position. Fig. In the upper position shown in 2, the head box 11 can be moved in the direction of z2 into the lower position.
[0020] The support bar bracket 12 comprises two support bars 13a and 13b and a yoke 14. How best to in Fig. As can be seen in Figure 1, the yoke 14 has a U-shape. One end section 15 of the yoke 14 is attached to an upper end section 17a of the support rod 13a. Another end section 16 of the yoke 14 is attached to an upper end section 17b of the support rod 13b. Lower end sections 18a and 18b of the support rods 13a and 13b are designed for storage in a receptacle in the backrest of a vehicle seat (not shown).
[0021] The headbox 11 comprises a cross member 19 and a frame 20. The frame 20 is indicated by a dashed line for clarity. The cross member 19 has a first guide 22a (not shown) in the form of a sliding bearing in a lower side region 21a, through which the support rod 13a passes. A second guide 22b, also in the form of a sliding bearing, is formed in a lower side region 21b, through which the support rod 13b passes. During movement between the lower and upper positions, the headbox 11 slides on the support rods 13a and 13b by means of the guides 22a and 22b.
[0022] A lower end section 23 of a guide rod 24 is attached to the cross member 19, preferably at an upper section. An upper end section of the guide rod 24 is designated by reference numeral 25. The guide rod 24 extends vertically upwards from the cross member 19 and passes through a guide recess 26 in a central section 27 of the yoke 14. The guide recess 26 is designed as an opening in the yoke 14. A flange of the opening rests against and surrounds an outer surface 28 of the guide rod 24. The guide thus allows movement of the guide rod 24 only in the directions z1 and z2. The guide recess 26 forms a sliding bearing, ensuring smooth movement of the head box 11. The guide rod 24 has a substantially rectangular outer contour in cross-section. In this way, rotation about a z-axis is also prevented in an upper area of the headbox 11.
[0023] The guide rod 24 and the guide recess 26 are arranged between the support rods 13a and 13b or between the longitudinal centerlines Ma of support rod 13a and Mb of support rod 13b. In this way, the support rods 13a and 13b can be made so short that, in the lower position of the headbox 11, they do not project into an upper region 29 of the headbox. The headbox 11 can therefore be narrower in the upper region 29 than in a lower region 30.
[0024] By forming the yoke 14 in a U-shape, the central region 27 has a distance L from the end regions 15 and 16, which are attached to the ends 17a and 17b of the support rods 13a and 13b. Thus, the upper guide, formed by the guide rod 24 and the guide recess 26, also maintains a distance from the guides 22a and 22b in the upper position of the headbox 11, ensuring stable guidance in all positions of the headbox 11.
Claims
[1] Headrest (10) for a vehicle seat with a head box (11) which can be mounted on the backrest of a vehicle seat by means of two support rods (13a, 13b), wherein a lower end region (30) of the head box (11) is mounted height-adjustable relative to the support rod (13a, 13b) by means of a first guide (22a) on a first support rod (13a) and a second guide (22b) on a second support rod (13b), wherein an upper region (29) of the head box is guided by means of at least one vertically extending guide rod (24) in a guide recess (26) of a yoke (14) connecting the first support rod (13a) and the second support rod (13b), characterized by, that a central area (27) of the yoke (14) has a distance (L) in the direction z1 from end areas (15, 16) of the yoke (14) attached to the support rods (13a, 13b), such that in the uppermost position of the headbox (11) the guide formed by the guide rod (24) and the guide recess (26) has a distance in the direction z from a first guide (22a) and a second guide (22b) with which the headbox (11) is supported on the support rods (13a, 13b). [2] Headrest (10) according to claim 1, characterized by , that the guide rod (24) is arranged between the first guide (22a) and the second guide (22b). [3] Headrest (10) according to claim 1 or claim 2, characterized by , that the guide recess (26) is arranged horizontally approximately in a central area of the yoke (14). [4] Headrest (10) according to any of the aforementioned claims, characterized by, that the guide recess (26) is formed by an opening in the yoke (14). [5] Headrest (10) according to any of the aforementioned claims, characterized by , that the guide rod (24) rests against a jamb of the guide recess (26) essentially over its entire circumference. [6] Headrest (10) according to any of the aforementioned claims, characterized by , that the yoke (14) is approximately U-shaped or V-shaped. [7] Headrest (10) according to any of the aforementioned claims, characterized by , that the guide rod (24) has a substantially circular, oval, rectangular or square cross-section.