CN214728363U - Adjustable seat headrest - Google Patents

Abstract

The utility model provides an adjustable seat headrest, which comprises a headrest front part and a headrest rear part connected with the headrest front part, wherein the headrest rear part is provided with a headrest rod which can be connected with a vehicle seat, and the headrest front part comprises a front framework, front foam nested outside the front framework and a front surface sleeve wrapping the front foam; anterior skeleton includes the supporting seat and is located the flank of the supporting seat left and right sides, and the flank passes through the damping axle to be connected with the supporting seat rotation, and anterior foam corresponds the junction of flank and supporting seat and has the groove of stepping down that runs through the setting along headrest direction of height. When the angle of the front part of the headrest needs to be adjusted, people rotate the two side wings forwards or backwards to a proper angle, so that the two sides of the front foam are turned forwards or backwards, the shape of the pillow surface of the front part of the headrest is adjusted, and the use comfort is improved; and the utility model discloses a headrest front portion has two lateral parts, can prevent effectively that the passenger from leading to the head to heel because of turning, the condition of bruising even.

Description

Adjustable seat headrest

Technical Field

The utility model belongs to the technical field of the passenger car headrest, concretely relates to adjustable seat headrest.

Background

A seat headrest (hereinafter, referred to as a headrest) is generally disposed on an upper portion of a seat back, and an occupant of the seat rests the headrest on the headrest to improve head comfort; and in an automobile accident, particularly a rear collision, causing a sudden backward movement of the occupant, the headrest may also prevent injuries to the neck and head of the occupant.

The surface of the common automobile headrest facing a passenger is fixed, the shape of the pillow surface cannot be changed, the requirements of various passengers on different headrests cannot be met, and particularly for people who sit on an automobile for a long time, the shape of the pillow surface of the headrest cannot be reasonably adjusted according to the self requirements, so that the comfort level is improved; moreover, the general car headrest does not have a function of preventing the head of the passenger from being tilted or even injured by the turning of the vehicle when the passenger is in a resting state or a sleeping state.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art, the utility model aims at providing an adjustable seat headrest.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the adjustable seat headrest comprises a headrest front part and a headrest rear part connected with the headrest front part, wherein a headrest rod capable of being connected with a passenger seat is arranged at the headrest rear part, and the headrest front part comprises a front framework, front foam nested outside the front framework and a front surface sleeve wrapping the front foam; anterior skeleton includes the supporting seat and is located the flank of the supporting seat left and right sides, and the flank passes through the damping axle to be connected with the supporting seat rotation, and anterior foam corresponds the junction of flank and supporting seat and has the groove of stepping down that runs through the setting along headrest direction of height.

Among the above-mentioned technical scheme, the headrest is split type structure including headrest front portion and headrest rear portion. When the angle of the front part of the headrest needs to be adjusted, people rotate the two side wings forwards or backwards to a proper angle, so that the two sides of the front foam are turned forwards or backwards along the abdicating groove, the shape of the pillow surface of the front part of the headrest is adjusted, and the use comfort is improved; and set up the groove of stepping down on the foam of front portion, when adjusting the anterior angle of headrest, have sufficient space of stepping down, reduce the extrusion of front portion foam each other and the fold of turning over a department, guarantee the resilience of front portion foam. The utility model discloses a headrest front portion has two lateral parts, can prevent effectively that the passenger from leading to the head to heel because of turning, the condition of bruising even.

In a preferred embodiment of the present invention, the receding groove is provided on the front surface, the upper surface, and the lower surface of the front foam.

The utility model discloses an in a preferred embodiment, still include the flank apron, the front end of flank apron has the card limit, the back of flank have with card limit joint complex recess, the card limit that the edge of anterior face cover passes through the flank apron is fixed in the recess of flank.

In the technical scheme, the side wing cover plate can cover the closing opening of the front face sleeve, so that the appearance is more attractive; on the other hand, the structure of the back of the side wing which is fussy can be covered.

The utility model discloses an among the preferred embodiment, anterior face cover corresponds groove department of stepping down and also does sunken setting. Therefore, when the angle of the folded side wing is adjusted, the wrinkles on the front face sleeve are reduced, and the appearance is more attractive.

In a preferred embodiment of the present invention, the outer side edge of the back of the side wing has a concave pit recessed forward. Therefore, when people turn over the side wings to adjust the angle of the headrest, the fingers of people are clamped into the concave pits of the side wings, the hands are supported by the side wings and cannot slide, and the operation is more convenient.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of an adjustable seat headrest according to a first embodiment of the present application.

Fig. 2 is an exploded view of the adjustable seat headrest of fig. 1.

Fig. 3 is a rear-axle-side perspective view of the front frame of fig. 2.

Fig. 4 is a front isometric view of the flap cover of fig. 2.

Fig. 5 is a rear isometric view of the front of the headrest of fig. 1.

Fig. 6 is an exploded view of the joint of the front portion of the headrest and the rear portion of the headrest according to the second embodiment.

Fig. 7 is a rear-axle side perspective view of the front frame of fig. 6.

Fig. 8 is a front perspective view of the cover of fig. 6.

Fig. 9 is a perspective view of the rear axle side of the front frame and the cover body connected together.

FIG. 10 is a partial schematic view of the backstop structure above.

Fig. 11 is a front axle side structural view of the headrest rods mounted on the frame body in the third embodiment.

Fig. 12 is a rear-axis side structural view of the cover in the third embodiment.

Fig. 13 is a schematic front-axis side structure diagram of the skeleton body in the third embodiment.

Fig. 14 is a rear axle side structural view of fig. 11.

Reference numerals in the drawings of the specification include: the headrest front portion 100, the front frame 110, the support seat 111, the side wings 112, the grooves 1121, the recesses 1122, the damping shaft 113, the front middle clip 114, the middle rib 1141, the middle front inclined surface 1142, the front upper clip 115, the upper rib 1151, the front lower clip 116, the lower rib 1161, the lower front inclined surface 1162, the front stopping portion 117, the front foam 120, the abdicating groove 121, the front face sleeve 130, the side wing cover plate 140, the clip 141, the headrest rear portion 200, the frame body 210, the strip-shaped groove 211, the plugboard 212, the rear clip groove 213, the positioning strip 214, the positioning clip groove 215, the positioning groove 216, the cover 220, the front clip groove 221, the positioning boss 222, the rear middle clip 223, the middle rear inclined surface 2231, the rear upper clip 224, the opening slot 2241, the rear lower clip 225, the lower rear inclined surface 2251, the rear stopping portion 226, the rear foam 230, the rear face sleeve 240, the headrest rod 300, the cross rod 310, the vertical rod 320, the elastic clip 330, the open slot 331, the rear clip groove 2251, the rear clip, A clip bolt 340.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The utility model provides an adjustable seat headrest, the connection structure of headrest front portion 100 and headrest rear portion 200 and the connection structure of headrest pole 300 and headrest body.

Example one

The present embodiment provides an adjustable seat headrest (hereinafter referred to as a headrest), which, as shown in fig. 1, in a preferred embodiment, includes a headrest body including a headrest front portion 100 and a headrest rear portion 200 connected to the headrest front portion 100, and a headrest rod 300 connectable to a vehicle seat, the headrest rod 300 being mounted on the headrest rear portion 200.

As shown in fig. 2, the headrest front portion 100 includes a front frame 110 made of plastic, a front foam 120 nested outside the front frame 110, and a front cover 130 covering the front foam 120. The headrest rear portion 200 includes a rear frame made of plastic, a rear foam 230 nested outside the rear frame, and a rear face cover 240 wrapping the rear foam 230. The rear portion skeleton is hollow, and headrest pole 300 installs on the skeleton of rear portion, and the rear portion skeleton includes that front end open-ended skeleton body 210 closes at skeleton body 210 opening part and with the lid 220 of skeleton body 210 rigid coupling.

As shown in fig. 3, the front frame 110 includes a support seat 111 and side wings 112 located at the left and right sides of the support seat 111, and the side wings 112 are rotatably connected to the support seat 111 through a damping shaft 113. As shown in fig. 2, the front foam 120 has an abdicating groove 121 penetrating along the headrest height direction at the connection of the side wings 112 and the support seat 111, the abdicating groove 121 is disposed on the front surface, the upper surface and the lower surface of the front foam 120, and the front surface cover 130 is recessed at the position corresponding to the abdicating groove 121.

With such a configuration, when in use, a person mounts the headrest on the car seat via the headrest rod 300. For example, as shown in fig. 1, when the angle of the front portion 100 of the headrest needs to be adjusted, as can be seen from fig. 3, one rotates the two side wings 112 of the front frame 110 forward to a proper angle, and the front frame 110 maintains this state under the action of the damping shaft 113, so that the two sides of the front foam 120 are folded forward, thereby adjusting the shape of the pillow surface of the front portion 100 of the headrest, and improving the comfort level; and the utility model discloses a headrest front portion 100 has two lateral parts, can prevent effectively that the passenger from leading to the head to heel because of turning, the condition of bruising even.

As shown in fig. 2 to 4, in another preferred embodiment, the headrest further includes a side flap 140 made of plastic, the front end of the side flap 140 has a clipping edge 141, and the clipping edge 141 is a blocking edge provided on the left side, the upper side and the lower side of the left side flap 140, taking the left side flap 140 as an example; the back of the side wing 112 has a groove 1121 for snap-fitting with the clamping edge 141. Referring to fig. 5, the front panel cover 130 wraps the front foam 120 from front to back and partially covers the front frame 110, and the edges of the front panel cover 130 are fixed in the grooves 1121 of the side flaps 112 by the catching edges 141 of the side flap cover 140. Of course, the elastic cord may be disposed at the opening of the front surface cover 130, and the surface cover may be fixed by the elastic cord.

In another preferred embodiment, shown in FIG. 3, the outside edge of the back of the side flap 112 has a forwardly concave dimple 1122. Therefore, when people turn over the two sides of the front portion 100 of the headrest to adjust the angle, the fingers of people are clamped into the concave 1122 of the side wings 112 and supported by the side wings 112 without slipping, so that the operation is more convenient.

The headrest of the present embodiment includes a headrest front portion 100 and a headrest rear portion 200, and is a split type headrest; the adjustable seat headrest of the present embodiment may be mounted to an integrated headrest that does not have a headrest rear portion.

Example two

In a preferred embodiment, as shown in fig. 6 to 8, the connecting structure includes a plurality of front fasteners disposed on the back of the front portion 100 of the headrest, and a plurality of rear fasteners disposed on the front of the rear portion 200 of the headrest and corresponding to the front fasteners and in snap fit with the front fasteners, and a retaining structure is disposed at the junction of the front fasteners and the rear fasteners for preventing the front portion 100 of the headrest from separating from the rear portion 200 of the headrest. Specifically, the front buckle is provided on the support seat 111 of the front frame 110 of the headrest front portion 100, the rear buckle is provided on the cover 220 of the headrest rear portion 200, and the backstop structure is provided between the support seat 111 and the cover 220.

As shown in fig. 7, the front latch includes a front middle latch 114 located in the middle of the supporting seat 111 and a front peripheral latch located at the periphery of the front middle latch 114. For example, the front peripheral buckle includes at least one front upper buckle 115 located above the front middle buckle 114 and at least one front lower buckle 116 located below the front middle buckle 114, and preferably, the number of the front upper buckles 115 and the number of the front lower buckles 116 are two and are located on the left side and the right side of the support seat 111 respectively.

As shown in fig. 8, the rear buckle includes a rear middle buckle 223 located in the middle of the cover 220 and capable of being snap-fitted with the front middle buckle 114, and a rear peripheral buckle located at the periphery of the rear middle buckle 223 and capable of being snap-fitted with the front peripheral buckle. For example, the rear peripheral buckle includes two rear upper buckles 224 which are located above the rear middle buckle 223 and are arranged correspondingly to the front upper buckle 115 and are in clamping fit with the front upper buckle 115, and two rear lower buckles 225 which are located below the rear middle buckle 223 and are arranged correspondingly to the front lower buckle 116 and are in clamping fit with the front lower buckle.

By adopting the technical scheme, the support seat 111 is connected with the cover body 220 in a buckling manner, so that the headrest front part 100 is connected with the headrest rear part 200. Through setting up joint complex preceding buckle 114 in with after buckle 223, joint complex back preceding peripheral buckle with after peripheral buckle and stopping structure, it is fixed to carry out the joint from centre and periphery, makes the fixed effectual of headrest front portion 100 with headrest rear portion 200, need not to use the bolt, convenient operation is swift.

As shown in fig. 7 and 8, in the present embodiment, the rear middle latch 223 is a middle through slot extending in the front-rear direction and disposed in the middle of the cover 220, the front middle latch 114 includes a middle protruding pillar extending in the rear direction and disposed at the rear end of the supporting base 111, a middle rib 1141 is disposed on the outer circumference of the end of the middle protruding pillar, after the front middle latch 114 and the rear middle latch 223 are latched in place, the middle protruding pillar is inserted into the middle through slot, and the middle rib 1141 thereon is reversely buckled on the back of the middle through slot of the cover 220. Of course, the middle through groove may be disposed on the supporting base 111, and the middle protruding pillar may be disposed on the cover 220.

The buckle 224 is for establishing the last draw-in groove that has open seam 2241 at the lid 220 front end on back, and preceding buckle 115 of going up is including establishing the last pillar of the backward extension at the supporting seat 111 rear end, and the periphery of going up the pillar is equipped with upper portion flange 1151, and preceding buckle 115 of going up targets in place with the last buckle 224 joint in back, goes up the pillar and inserts in the open seam 2241 of draw-in groove and upper portion flange 1151 card establishes at last draw-in groove. Of course, the upper engaging groove may be formed on the supporting base 111, and the upper protruding column may be formed on the cover 220.

The lower draw-in groove of buckle 225 for establishing the vertical setting on lid 220 down after, preceding buckle 116 down including establish the backward extension at supporting seat 111 rear end can be at the gliding lower post of draw-in groove down, the periphery of lower post is equipped with lower flange 1161, preceding buckle 116 down with the back buckle 225 joint back of targetting in place down, lower post insert down in the draw-in groove and lower flange 1161 back-off at the lower draw-in groove of lid 220. Of course, the lower engaging groove may be provided on the supporting base 111, and the lower boss may be provided on the lid 220.

In another preferred embodiment, as shown in fig. 7 and 9, the back surface of the middle through slot of the cover 220 has a middle rear inclined surface 2231 inclined from front to back from top to bottom, and the front end of the middle rib 1141 has a middle front inclined surface 1142 slidably engaged with the middle rear inclined surface 2231. The upper clamping groove of the rear upper buckle 224 is inclined from front to rear from top to bottom, the upper rib 1151 of the front upper buckle 115 is inclined from front to rear from top to bottom, and the upper rib 1151 can slide in the upper clamping groove. The back of the lower slot of the cover 220 has a lower rear inclined surface 2251 inclined from front to back and from top to bottom, and the front end of the lower rib 1161 has a lower front inclined surface 1162 slidably engaged with the lower rear inclined surface 2251.

As shown in fig. 7, preferably, the downward inclination angle of the upper rib 1151 of the upper front clip 115 (the angle between the upper rib and the vertical plane) is smaller than the downward inclination angle of the middle front inclined plane 1142 of the middle rib 1141 of the upper front clip 115 (the angle between the middle front inclined plane and the vertical plane), and the downward inclination angle of the middle front inclined plane 1142 is smaller than the downward inclination angle of the lower front inclined plane 1162 of the lower rib 1161 of the lower front clip 116 (the angle between the lower front inclined plane and the vertical plane). Preferably, the lower rib 1161 is spaced a greater distance from the rear surface of the headrest front portion 100 than the upper rib 1151 is spaced from the rear surface of the headrest front portion 100.

Therefore, people can tilt the front buckle of the front headrest portion 100 from top to bottom into the rear buckle of the rear headrest portion 200, the middle rib 1141, the upper rib 1151 and the lower rib 1161 are also tilted and clamped into the middle through groove, the upper clamping groove and the lower clamping groove to form an inverted buckle structure, and the front headrest portion 100 can be well prevented from moving forwards and upwards relative to the rear headrest portion 200 to be separated from the rear headrest portion 200 by combining the action of the retaining structure.

In another preferred embodiment, as shown in fig. 9 and 10, the connection between the upper front buckle 115 and the upper rear buckle 224 and the connection between the lower front buckle 116 and the lower rear buckle 225 are provided with a backstop structure for preventing the headrest front portion 100 from being separated from the headrest rear portion 200. Wherein, the retaining structure includes the back stopping portion 226 provided on the cover 220 and the front stopping portion 117 provided on the support seat 111, at least one of the back stopping portion 226 and the front stopping portion 117 can be elastically deformed, when the front buckle is in place with the rear buckle, the back stopping portion 226 is located above the front stopping portion 117 to prevent the front buckle from moving upwards and slantways to break away from the rear buckle.

Specifically, as shown in fig. 8 and 10, when the retaining structure is disposed at the connection between the front upper buckle 115 and the rear upper buckle 224, the rear retaining portion 226 is disposed at the front end of the cover 220, the rear retaining portion 226 is a support lug bent forward and downward above the rear upper buckle 224, the front retaining portion 117 is a protrusion disposed at the rear end of the upper post of the front upper buckle 115, and the upper end of the protrusion abuts against the lower end of the support lug to achieve retaining.

Specifically, as shown in fig. 9, when the retaining structure is disposed at the connection between the front lower buckle 116 and the rear lower buckle 225, the rear retaining portion 226 is disposed at the rear end of the cover 220, the rear retaining portion 226 is a protrusion extending rearward from the back of the lower slot of the cover 220, the front retaining portion 117 is a lower rib 1161, and the upper end of the lower rib 1161 abuts against the lower end of the protrusion to achieve retaining.

EXAMPLE III

In a preferred embodiment, as shown in fig. 11, the headrest rod 300 is integrally formed and has an inverted U-shaped structure, and the headrest rod 300 includes a cross bar 310 at the upper part and two vertical bars 320 at both sides of the cross bar 310.

As shown in fig. 11 to 13, the headrest rod 300 is mounted on a framework of the headrest rear portion 200, the framework is hollow, and the framework includes a framework body 210 with an opening at the front end and a cover 220 covering the opening of the framework body 210 and fixedly connected to the framework body 210, for example, clamped and fixed. Two parallel arrangement's that extend along the fore-and-aft direction strip groove 211 are seted up to skeleton body 210's lower part, and two montants 320 can insert respectively in two strip grooves 211 and can slide in strip groove 211. The framework body 210 is provided with two rear clamping grooves 213 matched with the two vertical rods 320, and the rear clamping grooves 213 are semi-cylindrical grooves; the cover 220 has a front slot 221 corresponding to the rear slot 213, the front slot 221 is a plurality of semi-circular slots arranged at intervals, and the cover 220 and the frame body 210 are covered to enclose a cavity for accommodating the vertical rod 320 by the front slot 221 and the rear slot 213. The inside integrated into one piece of skeleton body 210 has the plugboard 212 of vertical setting, and the cover is equipped with elasticity clamping piece 330 on the horizontal pole 310, and plugboard 212 can insert between two shell fragment of elasticity clamping piece 330, and plugboard 212 passes through clamping piece bolt 340 fixed connection with elasticity clamping piece 330.

When the headrest rod 300 is installed, as shown in fig. 11, the elastic clip 330 is firstly sleeved on the cross bar 310 of the headrest rod 300, then the two vertical rods 320 are obliquely inserted into the two strip-shaped grooves 211 of the frame body 210, and the lower parts of the vertical rods 320 are located outside the frame body 210. Then, the cross rod 310 slides backwards in the strip-shaped groove 211, and the two vertical rods 320 are respectively clamped into the two rear clamping grooves 213; then, the elastic clip 330 is elastically deformed, the insertion plate 212 is inserted between the two elastic pieces of the elastic clip 330, and the elastic clip 330 is fixed on the insertion plate 212 of the frame body 210 by the clip bolt 340. Next, the cover 220 is fixed at the front end of the framework body 210, for example, by clamping or self-tapping screw fixation, the cover 220 and the framework body 210 are covered to make the front slot 221 and the rear slot 213 fastened to form a cavity for accommodating the vertical rod 320, and the front slot 221 and the rear slot 213 limit the vertical rod 320 to slide in the strip-shaped slot 211.

As shown in fig. 14, in another preferred embodiment, the frame body 210 has a positioning bar 214 located at the front side or the rear side of the insertion board 212, and the elastic piece corresponding to the elastic clip 330 is provided with an opening groove 331 engaged with the positioning bar 214. For example, the positioning bars 214 are vertically arranged at the rear side of the plugboard 212, and the number of the positioning bars 214 is two; the open slot 331 is provided on the elastic sheet at the rear side of the elastic clamping piece 330, and the lower end of the open slot 331 is open. The position of the resilient clip 330 is positioned by the two positioning bars 214 and the opening grooves 331, thereby facilitating the resilient bolt 340 to rapidly pass through the bolt connection holes on the resilient clip 330 and the insertion plate 212.

As shown in fig. 11 and 12, in another preferred embodiment, the frame body 210 has two positioning slots 215 engaged with the cross bar 310, and the two positioning slots 215 are distributed on the left and right sides of the elastic clip 330.

As shown in fig. 12 and 13, in another preferred embodiment, a positioning groove 216 is disposed in the middle of the frame body 210, and a hollow positioning protrusion 222 inserted into the positioning groove 216 is disposed at the rear end of the cover 220. Of course, the positioning groove 216 may be disposed on the cover 220, and the positioning protrusion 222 may be disposed on the frame body 210.

The headrest of the present embodiment includes a headrest front portion 100 and a headrest rear portion 200, and is a split type headrest, and the headrest rod 300 is mounted on the headrest rear portion 200, and it should be noted that the headrest rod 300 of the present embodiment may also be mounted on an integrated type headrest.

In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (5)

1. The adjustable seat headrest comprises a headrest front part and a headrest rear part connected with the headrest front part, wherein the headrest rear part is provided with a headrest rod which can be connected with a passenger service seat, and the headrest front part comprises a front framework, front foam nested outside the front framework and a front surface sleeve wrapping the front foam; the headrest structure is characterized in that the front framework comprises a supporting seat and side wings positioned on the left side and the right side of the supporting seat, the side wings are rotatably connected with the supporting seat through damping shafts, and the joints of the front foam corresponding to the side wings and the supporting seat are provided with abdicating grooves which are arranged in a penetrating mode along the height direction of the headrest.

2. The adjustable seat headrest according to claim 1, wherein the relief slots are provided on a front surface, an upper surface and a lower surface of the front foam.

3. An adjustable seat headrest according to claim 1 further comprising a side wing cover, the front end of the side wing cover having a snap edge, the back of the side wing having a groove for snap-fitting with the snap edge, the edge of the front cover being secured in the groove of the side wing by the snap edge of the side wing cover.

4. An adjustable seat headrest according to claim 1 wherein the outboard edge of the rear face of the side wing has a forwardly concave depression.

5. An adjustable seat headrest according to any of claims 1 to 4 wherein the front face sleeve is also recessed in correspondence with the relief groove.

Images