Headrest for a vehicle seat as well as vehicle seat

Abstract

Headrest (100; 200) for a vehicle seat (1), the headrest (100; 200) comprising a support element (110; 210), a cushion support (140; 240) pivotally attached to the support element (110; 210) about an axis of rotation (D1), and a locking device for blocking a pivoting movement of the cushion support (140) relative to the support element (110) about the axis of rotation (D1) in at least one pivoting direction, the locking device comprising a locking element (120; 220) and a counter element (130; 230), wherein the locking element (120; 220) and the counter element (130; 230) can be brought into a locked state, wherein the locking element (120; 220) is attached to the cushion support (140; 240) or the support element (110; 210) is mounted, characterized in that the support element (110; 210) has a receptacle (112; 212) which is sectionally designed as a guide (116; 216) for guiding the locking element (120;220) and also has a recess (118; 218), wherein the counter element (130; 230) is movably guided through this recess (118; 218), wherein the receptacle (112; 212) ends in the recess (118; 218), and the locking element (120; 220) is guided within the recess (118; 218) by means of the guide (116; 216) such that the locking element (120; 220) can be partially slid into the recess (118; 218), so that the locking element (120; 220) and the counter element (130; 230) can be brought into a locked state together.

Description

[0001] The invention relates to a headrest for a vehicle seat, the headrest comprising a support element, a cushion support pivotably connected to the support element about a rotation axis, and a locking device for blocking a pivoting movement of the cushion support relative to the support element about the rotation axis in at least one pivoting direction. The locking device comprises a locking element and a counter element, wherein the locking element and the counter element can be brought into a mutually locked state. The invention also relates to a vehicle seat. State of the art

[0002] DE 10 2017 104 761 A1 discloses an adjusting device for a headrest of a vehicle seat, the adjusting device comprising a guide device for guiding a headrest support in a vertical direction, a backrest connection for attachment to a backrest, a longitudinal adjustment for adjusting the guide device in a longitudinal direction, a locking device for locking the adjusting device in both the longitudinal direction and the vertical direction, and a handle for unlocking the locking device into an unlocked position in which the locking device enables the longitudinal adjustment in the longitudinal direction and the height adjustment in the vertical direction, wherein a received headrest support can be locked in a vertical height position by the locking device.

[0003] US 2014 / 0 339 875 A1 discloses a headrest for a vehicle seat. The headrest comprises a support element, a cushion support pivotably connected to the support element about a pivot axis, and a locking device for blocking pivotal movement of the cushion support relative to the support element about the pivot axis. The locking device comprises a locking element and a counter element, wherein the locking element and the counter element can be brought into a mutually locked state. The locking element is rotatably mounted on the support element. The counter element is rigidly connected to the cushion support.

[0004] US 2019 / 0 283 642 A1 discloses a headrest assembly having a headrest that is rotatable from a first locked position to a second locked position to tilt the headrest relative to a seatback. Furthermore, the headrest is configured such that rotation of the headrest beyond the second locked position results in the headrest being pivotable back to the first locked position.

[0005] DE 10 2017 009 580 A1 discloses a headrest for a vehicle seat, the headrest comprising a support element, a cushion support pivotably connected to the support element about a rotation axis, and a locking device for blocking a pivoting movement of the cushion support relative to the support element about the rotation axis in at least one pivoting direction, the locking device comprising a locking element and a counter element, wherein the locking element and the counter element can be brought into a mutually locked state, wherein the locking element is mounted on the cushion support or the support element. Task

[0006] The invention is based on the object of providing a headrest that is more cost-effective than the prior art and, in particular, has fewer components. The invention is also based on the object of equipping a vehicle seat with such a headrest and thereby providing a vehicle seat that is more cost-effective than the prior art and has fewer components. Solution

[0007] This object is achieved according to the invention by a headrest for a vehicle seat, the headrest comprising a support element, a cushion support pivotably connected to the support element about a rotational axis, and a locking device for blocking a pivoting movement of the cushion support relative to the support element about the rotational axis in at least one pivoting direction, the locking device comprising a locking element and a counter-element, wherein the locking element and the counter-element can be brought into a mutually locked state, wherein the locking element is mounted on the cushion support or the support element, in particular guided linearly, wherein the support element has a receptacle, which is partially designed as a guide for guiding the locking element, and a recess, wherein the counter-element is movably guided through this recess, wherein the receptacle ends in the recess,and the locking element is guided by means of the guide within the recess in such a way that the locking element can be partially pushed into the recess, so that the locking element and the counter-element can be brought into a locked state with each other.,

[0008] Because the locking element is mounted on the other of the cushion support and the support element, in particular guided linearly, a headrest is provided which is more cost-effective than the prior art and in particular has only a few components.

[0009] The counter element can be pivotally connected to the other of the cushion support and the support element about a further rotation axis. The further rotation axis can be parallel to the rotation axis. The further rotation axis can be spaced apart from the rotation axis. The further rotation axis can be arranged in front of the rotation axis. The further rotation axis can be arranged above the rotation axis.

[0010] In a preferred embodiment, the counter element can be firmly connected to the other of the cushion support and the support element. Preferably, the counter element is curved around the rotation axis, at least in sections.

[0011] The locking device can block a pivoting movement of the cushion support relative to the support element about the rotation axis in exactly one of two pivoting directions. Preferably, the locking device blocks a pivoting movement of the cushion support such that an upper edge of the cushion support is locked against a longitudinal direction, in particular against a direction of travel, and is adjustable in the longitudinal direction, in particular adjustable in steps. Pivoting the upper edge of the cushion support in the longitudinal direction can be achieved, for example, by manually pulling the upper edge forward.

[0012] To unlock the locking device, the locking element and the counter-element can be moved from the interlocked state by means of a manually operable actuating element. To unlock the locking device, the locking element and the counter-element can be moved from the interlocked state by means of an electric actuator.

[0013] In an alternative embodiment, the locking device can block a pivoting movement of the cushion support relative to the support element about the axis of rotation in both pivoting directions.

[0014] The counter element can be pivotably connected to the cushion support about the further rotation axis, and the locking element can be mounted on the support element, in particular linearly guided. Alternatively, the counter element can be pivotably connected to the support element about the further rotation axis, and the locking element can be mounted on the cushion support, in particular linearly guided.

[0015] The counter element can be hinged directly to the cushion support so that it can pivot about the additional axis of rotation. The locking element can be mounted directly on the support element, in particular linearly guided. Alternatively, the counter element can be hinged directly to the support element so that it can pivot about the additional axis of rotation. The locking element can be mounted directly on the cushion support, in particular linearly guided.

[0016] The rotation axis can be designed as a shaft-hub connection, wherein at least one bearing shaft can be formed on the support part and at least one hub on the cushion support. The at least one bearing shaft can be fixedly connected to the support part. The at least one bearing shaft can be designed as one piece with the support part, thereby eliminating the need for a separate bearing shaft and thus a component. The support part can be a plastic component. The at least one hub can be fixedly connected to the cushion support. The at least one hub can be designed as one piece with the cushion support. The cushion support can be a plastic component.

[0017] The additional rotation axis can be designed as a shaft-hub connection, wherein at least one hub can be formed on the counter element. The shaft can be inserted through the hub of the counter element. The shaft can protrude beyond the hub of the counter element on both sides and be inserted into openings in the cushion support. Alternatively, the at least one hub can be formed on the cushion support, and the shaft can be inserted through the hub of the cushion support. The shaft can protrude beyond the hub of the cushion support on both sides and be inserted into openings in the counter element.

[0018] The additional rotation axis can be arranged above the rotation axis. The additional rotation axis can be arranged in front of the rotation axis.

[0019] The support element can have at least one rod for securing the headrest. Preferably, the support element has exactly two rods for securing the headrest. The at least one rod can serve to secure the headrest to a backrest, in particular to a backrest structure of the backrest, of the vehicle seat. The at least one rod can serve to secure the headrest to a vehicle body, in particular to a parcel shelf of the vehicle body.

[0020] The at least one rod can be fixedly connected to a backrest. The at least one rod can be guided in a backrest so as to be displaceable, in particular largely parallel to a vertical direction, whereby the headrest can be height-adjustable. The at least one rod can be fixedly connected to a backrest structure. The at least one rod can be guided in a backrest structure so as to be displaceable, in particular largely parallel to a vertical direction, whereby the headrest can be height-adjustable. The at least one rod can be fixedly connected to a vehicle body. The at least one rod can be guided in a vehicle body so as to be displaceable, in particular largely parallel to a vertical direction, whereby the headrest can be height-adjustable.

[0021] The at least one rod can be rigidly connected to the support element. Exactly two rods can be rigidly connected to the support element. The at least one rod can be guided in the support element so that it can be displaced, in particular substantially parallel to a vertical direction. Exactly two rods can be guided in the support element so that it can be displaced, in particular substantially parallel to a vertical direction, so that the headrest can be height-adjustable.

[0022] The locking element can be movably guided in the support element. The locking element can be linearly movable in the support element. The locking element can be linearly movable in a receptacle of the support element. The locking element can be guided in the support element largely parallel to a vertical direction.

[0023] The cushion support can have at least one housing part. The counter element can be pivotably connected to the housing part about the further rotation axis. Alternatively, the counter element can be rigidly connected to the housing part. The cushion support can have exactly two housing parts that are rigidly connected to one another. The counter element can be pivotably connected to one of the housing parts about the further rotation axis. Alternatively, the counter element can be rigidly connected to one of the housing parts.

[0024] The cushion support can have a cavity. The support element can be arranged within the cavity. The counter element can be arranged within the cavity. The locking element can be arranged within the cavity. The cavity can be delimited by at least one housing part. The cavity can be delimited by at least two housing parts. The cavity can be delimited by exactly two housing parts.

[0025] The counter element can be designed as a rack. The rack can have one tooth. The rack preferably has multiple teeth. Multiple teeth of the rack can form a toothing. The locking element can have at least one tooth that can be brought into locking engagement with the toothing of the counter element. The locking element can have at least one tooth that can selectively engage at least two different tooth roots of the toothing of the rack. This allows the counter element to be locked to the locking element in different positions relative to the locking element, whereby the headrest can be locked at different inclination settings. An inclination of the headrest, in particular in a direction parallel to a transverse direction, can thus be adjustable about the axis of rotation.

[0026] The cushion support and the support element can be releasably brought into a mutually locked state in at least two mutually different relative positions by means of the locking device.

[0027] The object is further achieved according to the invention by a vehicle seat comprising a seat part, a backrest, and a headrest according to the invention. Because the headrest according to the invention is simple and lightweight, the vehicle seat according to the invention is also lighter. In the event of a crash, the mass inertia forces acting on the backrest of the vehicle seat are reduced. Figures and embodiments of the invention

[0028] The invention is explained in more detail below with reference to advantageous embodiments illustrated in the figures. However, the invention is not limited to these embodiments. They show: Fig. 1: schematically a side view of a vehicle seat according to the invention with a headrest according to the invention, Fig. 2: an exploded view of a headrest according to the invention according to a first embodiment, without showing a cushion of the headrest, Fig. 3: a section along the line III - III in Fig. 2, wherein a cushion support of the headrest is shown in a first of four possible inclination settings and in a locked state, Fig. 4: a section along the line IV - IV in Fig. 2, wherein the cushion support is shown in a fourth of four possible inclination settings and in a locked state, Fig. 5: a section along the line IV - IV in Fig. 2, wherein the cushion support is shown in the fourth inclination setting and in an unlocked state, Fig. 6: an exploded view of a headrest according to the invention according to a second embodiment, without showing a cushion of the headrest, Fig. 7: a section along the line VII - VII in Fig. 6, wherein a cushion support of the headrest is shown in a first of four possible inclination settings and in a locked state, Fig. 8: a section along the line VII - VII in Fig. 6, wherein the cushion support is shown in a fourth of four possible inclination settings and in a locked state, and Fig. 9: a section along the line VII - VII in Fig. 6, wherein the cushion support is shown in the fourth inclination setting and in an unlocked state.

[0029] One in Fig. 1 schematically illustrated vehicle seat 1 according to the invention and its headrest 100; 200 according to the invention are described below using three spatial directions running perpendicular to one another. In a vehicle seat 1 installed in the vehicle, a longitudinal direction x runs largely horizontally and preferably parallel to a vehicle longitudinal direction that corresponds to the usual direction of travel of the vehicle. A transverse direction y running perpendicular to the longitudinal direction x is also oriented horizontally in the vehicle and runs parallel to a vehicle transverse direction. A vertical direction z runs perpendicular to the longitudinal direction x and perpendicular to the transverse direction y. In a vehicle seat 1 installed in the vehicle, the vertical direction z runs parallel to the vehicle's vertical axis.

[0030] The following directional terms "longitudinal direction x," "transverse direction y," and "vertical direction z" also include directions arranged parallel to each other. For example, the phrase "longitudinal direction x" can also include directions parallel to the longitudinal direction x.

[0031] The position and direction information used below, such as front, rear, top and bottom, refer to a viewing direction of an occupant sitting in the vehicle seat 1 in a normal sitting position, wherein the vehicle seat 1 is installed in the vehicle, in a position of use suitable for transporting people, and is aligned in the direction of travel as usual.

[0032] The vehicle seat 1 comprises a seat part 3, a backrest 5 whose inclination is adjustable relative to the seat part 3, and the headrest 100; 200. The Fig. The headrest 100; 200 shown in more detail in Figures 2 to 5 is arranged above an upper edge of the backrest 5.

[0033] The Fig. 2 to 5 show a first embodiment of a headrest 100 according to the invention.

[0034] A support element 110 of the headrest 100 is attached to an upper region of the backrest 5, in particular to a supporting backrest structure 7 of the backrest 5, by means of two rods 119. The lower ends of the two rods 119 are firmly connected to the supporting backrest structure 7.

[0035] In a modification of the exemplary embodiment, the two rods are guided in the backrest structure in a displaceable manner, in particular largely parallel to the vertical direction z, allowing the headrest to be adjusted in height. Preferably, the two rods are then displaceable in plastic guide sleeves attached to the backrest structure.

[0036] A cushion support 140 of the headrest 100 supports a cushion (not shown in the figures), preferably comprising a foam part and a cushion cover. The head of an occupant of the vehicle seat 1 can come into contact with the cushion in such a way that the head is supported opposite to the longitudinal direction x. Particularly in the event of a rear-end collision, high forces act on the cushion support 140 due to the inertia of the head. To prevent injuries to the occupant, in particular to prevent whiplash, the cushion support 140 should be as rigid as possible opposite to the longitudinal direction x (opposite the direction of travel).

[0037] To individually adjust the headrest 100 to the comfort needs of the occupant, the cushion support 140 can be pivoted about a rotation axis D1. The rotation axis D1 runs parallel to the transverse direction y. By means of a locking device comprising a locking element 120 and a counter element 130, a pivoting movement of the cushion support 140 relative to the support element 110 about the rotation axis D1 can be releasably locked. In the present case, a pivoting movement of the cushion support 140 about the rotation axis D1 can be locked in exactly one pivoting direction, specifically such that an upper edge of the cushion support 140 is blocked opposite the longitudinal direction x.

[0038] The support element 110 is a plastic component, preferably an injection-molded component. The structure of the support element 110 is largely mirror-symmetrical to a mirror plane that runs perpendicular to the transverse direction y through a seat center of the vehicle seat 1. The upper ends of the two rods 119 are firmly connected to the support element 110.

[0039] The support element 110 has a receptacle 112. Sections of the receptacle 112 are configured as a guide 116 for guiding the locking element 120. The locking element 120 is guided in the guide 116 for linear movement. The locking element 120 is guided in the receptacle 112 largely parallel to the vertical direction z.

[0040] Two aligned bearing shafts 114 are formed on the support element 110. The bearing shafts 114 are aligned with the rotational axis D1. Hubs of the cushion support 140 (not shown in the figures) are arranged on the bearing shafts 114. The bearing shafts 114 and the hubs of the cushion support 140 (not shown) form pivot bearings and thus define the rotational axis D1.

[0041] The support element 110 also has a recess 118. The counter element 130, in this case a toothed rack, is movably guided through this recess 118. The receptacle 112 ends in the recess 118. The locking element 120 is guided within the recess 118 by means of the guide 116 such that the locking element 120 can be partially pushed into the recess 118, so that the locking element 120 and the counter element 130 can be brought into a locked state with one another.

[0042] The locking element 120 is preferably preloaded toward the counter element 130 by means of a spring (not shown in the figures). The locking element 120 has an interface, in this case a first cable connection point 122, for moving the locking element 120 from the locked state to an unlocked state. When the locking element 120 is moved from the locked state to the unlocked state, the locking element 120 is moved downward in the guide 116 under the preload of the spring.

[0043] The locking element 120 is designed as a pawl. The locking element 120 has a tooth 124. A tooth tip of the tooth 124 is oriented toward the counter element 130. The tooth 124 has a first tooth flank 124.1 and a second tooth flank 124.2. The first tooth flank 124.1 is oriented forward in this case. The second tooth flank 124.2 is oriented rearward in this case.

[0044] The counter element 130, embodied here as a rack, is pivotally connected to the cushion support 140 about a further rotational axis D2. For this purpose, the counter element 130 has a hub 132 aligned with the further rotational axis D2 for supporting a shaft 170. The hub 132 is formed in a forward-facing end region of the counter element 130. A spring element 136 biases the counter element 130 toward the locking element 120.

[0045] The counter element 130 also has a toothing with a plurality of teeth 134. The tooth 124 of the locking element 120 can be brought into locking engagement with the toothing of the counter element 130. Preferably, each of the teeth 134 has a first tooth flank 134.1 and a second tooth flank 134.2. The respective first tooth flank 134.1 is oriented rearward in this case. The respective second tooth flank 134.2 is oriented forward in this case. A front tooth 134 of the toothing, closest to the further rotation axis D2, has only a second tooth flank 134.2, but no first tooth flank 134.1. A rear tooth 134 of the toothing 134 facing away from the further axis of rotation D2 has only a first tooth flank 134.1, but no second tooth flank 134.2.

[0046] The tooth 124 of the locking element 120 can engage between two adjacent teeth 134 of the counter element 130 such that the first tooth flank 124.1 of the tooth 124 of the locking element 120 abuts one of the first tooth flanks 134.1 of a tooth 134 of the counter element 130 and the second tooth flank 124.2 of the tooth 124 of the locking element 120 abuts a second tooth flank 134.2 of an adjacent tooth 134 of the counter element 130.

[0047] The flank angles of the first tooth flanks 124.1; 134.1 are designed such that the locking element 120 and the counter element 130 can be brought into a self-locking abutting state, so that the locking mechanism does not open when a force acts on the upper edge of the cushion support 140 opposite to the longitudinal direction x.

[0048] The flank angles of the second tooth flanks 124.2; 134.2 are designed such that the locking element 120 and the counter element 130 can only abut one another outside of the self-locking mechanism, so that when a force acts on the upper edge of the cushion support 140 in the longitudinal direction x, the locking mechanism opens automatically under pretension of the spring element 136 and / or under pretension of the spring acting on the locking element 120, and the cushion support 140 can be pivoted forward about the rotation axis D1.

[0049] The cushion support 140 has a first housing part 150 and a second housing part 160, which form a cavity H between them. The support element 110, the locking element 120 and the counter element 130 are arranged within the cavity H.

[0050] The first housing part 150 has, in an upper region, two domes 152, each with a hole 154, projecting into the cavity H. The second housing part 160 has, in an upper region, two domes 162, each with a hole 164, projecting into the cavity H. An end face of each of the two domes 152 of the first housing part 150 rests against an end face of each of the two domes 162 of the second housing part 160. The domes 152 of the first housing part 150 are screwed to the domes 162 of the second housing part 160 by means of screws not shown in the figures. In addition, the second housing part 160 has, in a lower region, two clips 166, by means of which the first housing part 150 and the second housing part 160 are additionally clipped together.

[0051] To support the shaft 170, which is aligned with the further rotational axis D2, the first housing part 150 has two openings 156, which are also aligned with the further rotational axis D2. Each of the two openings 156 is formed in one of two bearing eyes 158 of the first housing part 150.

[0052] An actuating element 180 is provided for unlocking the locking device comprising the locking element 120 and the counter element 130. The actuating element 180 has a housing 182 attached to the cushion support 140 and an operating element 184 linearly guided within the housing 182. The operating element 184 is biased toward an unactuated position by a spring 186.

[0053] A Bowden cable 190, comprising a cable 192 and a sheath 194, connects the operating element 184 to the locking element 120. For this purpose, a first cable end 196 of the cable 192 is attached to the operating element 184, and a second cable end 198 of the cable 192 is connected to the first cable connection point 122 of the locking element 120. By actuating the operating element 184 against the force of the spring 186, the tooth 124 of the locking element 120 is pulled out of engagement with the toothing of the counter-element 130, so that the counter-element 130 can be pivoted relative to the locking element 120. As a result, the cushion support 140 can be pivoted relative to the support element 110 about the rotation axis D1. The counter element 130 performs a pivoting movement around the further rotation axis D2.As a result, the toothing of the counter element 130 does not have to be curved around the axis of rotation D1, which increases the design freedom in the structural design of the headrest 100 and can reduce the required installation space.

[0054] Fig. Figure 3 shows the cushion support 140 of the headrest 100 in a first of four possible tilt settings and in a locked state. This first tilt setting corresponds to a rearmost position of the upper edge of the cushion support 140. To pivot the upper edge of the cushion support 140 forward, i.e., to transfer the cushion support 140 to one of the further tilt settings, the upper edge can be manually pulled forward without having to actuate the actuating element 180.

[0055] Fig. Figure 4 shows the cushion support 140 of the headrest 100 in a fourth of the four possible inclination settings and in a locked state. To pivot the upper edge of the cushion support 140 rearward, the actuating element 180 must be actuated due to the previously described self-locking design of the first tooth flanks 124.1; 134.1, thereby disengaging the locking element 120. The same applies to the second and third of the four possible inclination settings, not shown in the figures.

[0056] Fig. 5 shows the cushion support 140 of the headrest 100 in the fourth of the four possible inclination settings and in an unlocked state, which can be achieved by actuating the actuating element 180. In this unlocked state, the cushion support 140 of the headrest 100 can be pivoted toward the first inclination setting.

[0057] The Fig. 6 to 9 show a second embodiment of a headrest 200 according to the invention.

[0058] A support element 210 of the headrest 200 is attached to an upper region of the backrest 5, in particular to a supporting backrest structure 7 of the backrest 5, by means of two rods 219. The lower ends of the two rods 219 are firmly connected to the supporting backrest structure 7.

[0059] In a modification of the exemplary embodiment, the two rods are guided in the backrest structure in a displaceable manner, in particular largely parallel to the vertical direction z, allowing the headrest to be adjusted in height. Preferably, the two rods are then displaceable in plastic guide sleeves attached to the backrest structure.

[0060] A cushion support 240 of the headrest 200 supports a cushion (not shown in the figures), preferably comprising a foam part and a cushion cover. The head of an occupant of the vehicle seat 1 can come into contact with the cushion in such a way that the head is supported opposite to the longitudinal direction x. Particularly in the event of a rear-end collision, high forces act on the cushion support 240 due to the inertia of the head. To prevent injuries to the occupant, in particular to prevent whiplash, the cushion support 240 should be as rigid as possible opposite to the longitudinal direction x (opposite the direction of travel).

[0061] To individually adjust the headrest 200 to the comfort needs of the occupant, the cushion support 240 is pivotable about a rotation axis D1. The rotation axis D1 runs parallel to the transverse direction y. By means of a locking device comprising a locking element 220 and a counter-element 230, a pivoting movement of the cushion support 240 relative to the support element 210 about the rotation axis D1 can be releasably locked. In the present case, a pivoting movement of the cushion support 240 about the rotation axis D1 can be locked in exactly one pivoting direction, specifically such that an upper edge of the cushion support 240 is locked counter to the longitudinal direction x.

[0062] The support element 210 is a plastic component, preferably an injection-molded component. The structure of the support element 210 is largely mirror-symmetrical to a mirror plane that runs perpendicular to the transverse direction y through a seat center of the vehicle seat 1. The upper ends of the two rods 219 are firmly connected to the support element 210.

[0063] The support element 210 has a receptacle 212. Sections of the receptacle 212 are configured as a guide 216 for guiding the locking element 220. The locking element 220 is guided in the guide 216 for linear movement. The locking element 220 is guided in the receptacle 212 largely parallel to the vertical direction z.

[0064] Two aligned bearing shafts 214 are formed on the support element 210. The bearing shafts 214 are aligned with the rotation axis D1. Hubs of the cushion support 240 (not shown in the figures) are arranged on the bearing shafts 214. The bearing shafts 214 and the hubs of the cushion support 240 (not shown) form pivot bearings and thus define the rotation axis D1.

[0065] The support element 210 also has a recess 218. The counter element 230, in this case a toothed rack, is movably guided through this recess 218. The receptacle 212 ends in the recess 218. The locking element 220 is guided within the recess 218 by means of the guide 216 such that the locking element 220 can be partially pushed into the recess 218, so that the locking element 220 and the counter element 230 can be brought into a locked state with one another.

[0066] The locking element 220 is preloaded toward the counter element 230 by means of a spring element 236. The locking element 220 has a control contour 226 for moving the locking element 220 from the locked state to an unlocked state. When the locking element 220 is moved from the locked state to the unlocked state, the locking element 220 is moved downward in the guide 216 under the preload of the spring element 236.

[0067] The locking element 220 is designed as a pawl. The locking element 220 has a tooth 224. A tooth tip of the tooth 224 is oriented toward the counter element 230. The tooth 224 has a first tooth flank 224.1 and a second tooth flank 224.2. The first tooth flank 224.1 is oriented forward in this case. The second tooth flank 224.2 is oriented rearward in this case.

[0068] The cushion support 240 has a first housing part 250 and a second housing part 260, which form a cavity H between them. The support element 210, the locking element 220 and the counter element 230 are arranged within the cavity H.

[0069] The counter element 230, which is designed here as a rack, is firmly connected to the first housing part 250. The counter element 230 is preferably integral with the housing part 250.

[0070] The counter element 230 has a toothing with a plurality of teeth 234. The tooth 224 of the locking element 220 can be brought into locking engagement with the toothing of the counter element 230. Preferably, each of the teeth 234 has a first tooth flank 234.1 and a second tooth flank 234.2. The respective first tooth flank 234.1 is oriented rearward in this case. The respective second tooth flank 234.2 is oriented forward in this case. A front tooth 234 of the toothing closest to the further rotation axis D2 has only a second tooth flank 234.2, but no first tooth flank 234.1. A rear tooth 234 of the toothing facing away from the further axis of rotation D2 has only a first tooth flank 234.1, but no second tooth flank 234.2.

[0071] The tooth 224 of the locking element 220 can engage between two adjacent teeth 234 of the counter element 230 such that the first tooth flank 224.1 of the tooth 224 of the locking element 220 abuts one of the first tooth flanks 234.1 of a tooth 234 of the counter element 230 and the second tooth flank 224.2 of the tooth 224 of the locking element 220 abuts a second tooth flank 234.2 of an adjacent tooth 234 of the counter element 230.

[0072] The flank angles of the first tooth flanks 224.1; 234.1 are designed such that the locking element 220 and the counter element 230 can be brought into a self-locking abutting state, so that the locking mechanism does not open when a force acts on the upper edge of the cushion support 240 opposite to the longitudinal direction x.

[0073] The flank angles of the second tooth flanks 224.2; 234.2 are designed such that the locking element 220 and the counter element 230 can only abut one another outside of the self-locking mechanism, so that when a force acts on the upper edge of the cushion support 240 in the longitudinal direction x, the locking mechanism opens automatically under pretension of the spring element 236 and / or under pretension of the spring element 236 acting on the locking element 220, and the cushion support 240 can be pivoted forward about the rotation axis D1.

[0074] The second housing part 260 has two domes 262, each with a hole 264, projecting into the cavity H. The first housing part 250 has two pins 256 projecting into the cavity H. Each pin 256 is inserted into a hole 264 of one of the domes 262. The domes 262 can also be screwed or clipped to the pins 256. Furthermore, the second housing part 260 has circumferential clips 266, by means of which the first housing part 250 and the second housing part 260 are clipped together.

[0075] To unlock the locking device comprising the locking element 220 and the counter element 230, an actuating element 280 and a slide 290 are provided. The actuating element 280 can have a housing fastened to the cushion support 240 and an operating element guided linearly in the housing. The actuating element 280 is arranged such that pressure on the operating element causes the slide 290 to be displaced linearly and acts on the control contour 226 of the locking element 220. As a result, the locking element 220 can be moved downward in the guide 216 under the pretension of the spring element 236. The slide 290 is pretensioned by a spring 296 toward an unactuated position, so that when the actuating element 280 is unactuated, the locking element 220 is moved by the spring element 236 toward the counter element 230.

[0076] By actuating the actuating element 280 against the force of the spring 296, the tooth 224 of the locking element 220 is pulled out of engagement with the toothing of the counter element 230, so that the counter element 230 can be pivoted relative to the locking element 220. As a result, the cushion support 240 can be pivoted relative to the support element 210 about the rotation axis D1.

[0077] Fig. Figure 7 shows the cushion support 240 of the headrest 200 in a first of four possible tilt settings and in a locked state. This first tilt setting corresponds to a rearmost position of the upper edge of the cushion support 240. To pivot the upper edge of the cushion support 240 forward, i.e., to transfer the cushion support 240 to one of the further tilt settings, the upper edge can be manually pulled forward without having to actuate the actuating element 280.

[0078] Fig. Figure 8 shows the cushion support 240 of the headrest 200 in a fourth of the four possible inclination settings and in a locked state. To pivot the upper edge of the cushion support 240 rearward, the actuating element 280 must be actuated due to the previously described self-locking design of the first tooth flanks 224.1; 234.1, thereby disengaging the locking element 220. The same applies to the second and third of the four possible inclination settings, not shown in the figures.

[0079] Fig.Figure 9 shows the cushion support 240 of the headrest 200 in the fourth of the four possible tilt settings and in an unlocked state, which can be achieved by actuating the actuating element 280. In this unlocked state, the cushion support 240 of the headrest 200 can be pivoted toward the first tilt setting. A spring 254 always biases the cushion support 240 toward the first of the four possible tilt settings, so that by actuating the actuating element 280, the cushion support 240 automatically pivots back to this first tilt setting.

[0080] The features disclosed in the above description, the claims, and the figures may be important both individually and in combination for the realization of the invention in its various embodiments, as long as they remain within the scope of the claims. Terms such as "comprise," "have," "include," "contain," and the like do not exclude additional components. The use of the indefinite article does not exclude a plural. List of reference symbols 1 vehicle seat 3 Seat part 5 Backrest 7 Backrest structure 100 headrest 110 support element 112 recording 114 Bearing shaft 116 Guide 118 Recess 119 rod 120 locking element 122 first cable connection point 124 tooth 124.1 first tooth flank 124.2 second tooth flank 130 Counter element, rack 132 Hub 134 tooth 134.1 first tooth flank 134.2 first tooth flank 136 spring element 140 upholstery supports 150 Housing part 152 Cathedral 154 holes 156 Opening 158 bearing eye 160 Housing part 162 Cathedral 164 holes 166 clips 170 Wave 180 Actuator 182 housings 184 Control element 186 spring 190 Bowden cable 192 cable pull 194 cover 196 first rope end 198 second rope end 200 headrest 210 support element 212 recording 214 bearing shaft 216 Guide 218 recess 219 rod 220 locking element 224 tooth 224.1 first tooth flank 224.2 second tooth flank 226 control contour 230 Counter element, rack 234 tooth 234.1 first tooth flank 234.2 first tooth flank 236 spring element 240 upholstery supports 250 housing part 254 spring 256 cones 260 housing part 262 Cathedral 264 holes 266 clips 280 Actuator 290 sliders 296 spring D1 rotation axis D2 (additional) rotation axis H cavity x longitudinal direction y transverse direction z Vertical direction

Claims

[1] Headrest (100; 200) for a vehicle seat (1), the headrest (100; 200) comprising a support element (110; 210), a cushion support (140; 240) pivotably connected to the support element (110; 210) about a rotation axis (D1), and a locking device for blocking a pivoting movement of the cushion support (140) relative to the support element (110) about the rotation axis (D1) in at least one pivoting direction, the locking device comprising a locking element (120; 220) and a counter-element (130; 230), wherein the locking element (120; 220) and the counter-element (130; 230) can be brought into a mutually locked state, wherein the locking element (120; 220) on the cushion support (140; 240) or the carrier element (110; 210), characterized bythat the carrier element (110; 210) has a receptacle (112; 212) which is partially designed as a guide (116; 216) for guiding the locking element (120; 220), and also has a recess (118; 218), wherein the counter element (130; 230) is guided movably through this recess (118; 218), wherein the receptacle (112; 212) ends in the recess (118; 218), and the locking element (120; 220) is guided by means of the guide (116; 216) within the recess (118; 218) in such a way that the locking element (120; 220) can be pushed partially into the recess (118; 218), so that the The locking element (120; 220) and the counter element (130; 230) can be brought into a locked state with one another. [2] Headrest (100) according to claim 1, characterized by that the counter element (130) is pivotally connected to the other of the cushion support (140) and the support element (110) about a further axis of rotation (D2). [3] Headrest (200) according to claim 1, characterized by that the counter element (230) is firmly connected to the other of the cushion support (240) and the support element (210). [4] Headrest (100; 200) according to one of the preceding claims, characterized by that the support element (110; 210) has at least one rod (119; 219) for fastening the headrest (100; 200) to the vehicle seat (1) or for fastening the headrest (100; 200) to a vehicle body. [5] Headrest (100; 200) according to claim 4, characterized by that the at least one rod (119; 219) is firmly connected to the support element (110; 210). [6] Headrest (100; 200) according to one of the preceding claims, characterized by that the cushion support (140; 240) has at least one housing part (150; 160; 250; 260), and the counter element (230) is fixedly connected to the housing part (250; 260). [7] Headrest (100; 200) according to one of claims 2 to 5, characterized bythat the cushion support (140; 240) has at least one housing part (150; 160; 250; 260), and the counter element (130) is pivotally connected to the housing part (150; 160) about the further axis of rotation (D2). [8] Headrest (100; 200) according to one of the preceding claims, characterized by that the cushion support (140; 240) has a cavity (H), and the counter element (130; 230) is arranged within the cavity (H). [9] Headrest (100; 200) according to one of the preceding claims, characterized by that the counter element (130; 230) is designed as a toothed rack having a toothing with a plurality of teeth (134; 234), and the locking element (120; 220) has at least one tooth (124; 224) which can be brought into locking engagement with the toothing of the counter element (130; 230). [10] Headrest (100; 200) according to one of the preceding claims, characterized bythat the cushion support (140; 240) and the support element (110; 210) can be brought into a locked state in at least two mutually different relative positions by means of the locking device. [11] Vehicle seat (1), comprising a seat part (3), a backrest (5) and a headrest (100; 200) according to one of claims 1 to 10.

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