CN219446798U - Automobile headrest - Google Patents

Abstract

The utility model discloses an automobile headrest, which comprises an outer layer headrest body structure, wherein a four-way adjusting mechanism is arranged in the outer layer headrest body structure; the four-way adjusting mechanism comprises a framework part which is arranged in the outer layer pillow body structure and is used for connecting an automobile seat, an adjusting part which can be adjusted in four directions up and down and front and back is arranged between the framework part and the outer layer pillow body structure, and the adjusting part is used for realizing four-way adjustment of the outer layer pillow body structure; the adjusting part is provided with a first locking part and a second locking part, the first locking part is used for locking the adjusting part in the downward direction, and the second locking part is used for locking the adjusting part in the backward direction. The adjusting part in the four-way adjusting mechanism can adjust the outer layer pillow body structure in four directions, the first locking part is used for locking the adjusting part in the downward direction, and the second locking part is used for locking the adjusting part in the backward direction, namely, the outer layer pillow body structure does not need to be unlocked manually when being adjusted upwards and forwards.

Description

Automobile headrest

Technical Field

The utility model belongs to the field of automobile accessories, relates to an automobile headrest, and in particular relates to a four-way headrest of an automobile seat.

Background

With the development of the automobile industry and the development of technology, automobiles are becoming more popular, requirements of people on automobile seats are also becoming higher, and the diversification of functional configurations of the headrest serving as an important component of the seats is also becoming a point of attention of customers. In order to support the head of an occupant and to adapt to the riding postures of occupants of different heights and sizes, the headrest needs to be adjusted not only in the up-down direction but also in different front-rear directions, so that four-way headrests (simply called car headrests or four-way headrests) of car seats capable of being adjusted in front-rear and up-down directions on the market are generated.

For example, patent documents CN205706285U, CN206633850U, CN207360156U, CN207931554U, CN215663095U and CN112440848a report four-way headrest having up-down and front-back adjustment functions of various structures. However, the existing automobile headrest has complex structure and complex assembly process, so that the cost of the headrest is high; some connecting/driving structures such as levers, screw rods and the like are used too much, so that the precision requirements of parts are high, and the machining is difficult; the structure of the device ensures that a driver needs to perform manual unlocking when performing adjustment in four directions, namely up, down, front and back, and the manual unlocking is easy to operate repeatedly due to misoperation; and because the structure is complex, the unlocking of the headrest can be completed only by using larger force when the headrest is unlocked, and the driving experience of a customer is seriously influenced.

Disclosure of Invention

The above-mentioned drawbacks of the car headrest of the prior art, we have combined production practice and experience feedback of numerous car occupants, through simulation and experimentation, provided the following improved solutions.

The automobile headrest comprises an outer layer headrest body structure and a four-way adjusting mechanism arranged in the outer layer headrest body structure, wherein the four-way adjusting mechanism comprises a framework part which is arranged in the outer layer headrest body structure and is used for being connected with an automobile seat, an adjusting part capable of being adjusted in four directions up and down and front and back is arranged between the framework part and the outer layer headrest body structure, and the adjusting part is used for realizing four-way adjustment of the outer layer headrest body structure; the adjusting part is provided with a first locking part and a second locking part, the first locking part is used for locking the adjusting part in the downward direction, and the second locking part is used for locking the adjusting part in the backward direction.

Preferably, when the locking part moves relative to the locking part, forward adjustment of the outer pillow body structure is realized; and when the second locking part and the locking part move synchronously, synchronous unlocking is realized.

In the automobile headrest, the outer layer pillow body structure comprises a support shell and a face cover structure arranged on the outer surface of the support shell, and the adjusting part is positioned in the support shell; the support shell comprises a headrest front shell and a headrest rear shell which are connected through bolts, and the outer surface of the headrest rear shell is connected with a headrest protection cover in a buckling manner; the face cover structure is including setting up the front cover of headrest on the headrest front shell keeps away from headrest safety cover one side, the surface of headrest safety cover is provided with the cover behind the headrest, run through between the bottom of cover behind headrest rear shell, headrest safety cover and the headrest and offered two keep away empty long mouths that are used for skeleton portion tip to stretch out.

The framework part comprises two headrest frameworks which are positioned in the headrest rear shell, one ends of the two headrest frameworks extend out of the two clearance long openings respectively, and the other ends of the two headrest frameworks are connected with the connecting frame through bolts.

The adjusting part comprises a bottom plate which is connected between the outer surfaces of the two occipital frames in a sliding way, and a fixing box can be connected to the bottom plate through bolts; the two sides of the fixed box are respectively provided with a connecting groove, the inner walls of the two connecting grooves are respectively and slidably connected with guide rails, and the two guide rails are respectively and fixedly arranged on the inner walls of the two sides of the headrest rear shell; the fixing box is provided with two connecting holes, support rods are inserted into the two connecting holes, and one ends of the two support rods are fixedly connected with the headrest rear shell; the middle part of fixed box alternates and is connected with the slider, the one end and the headrest backshell fixed connection of slider.

The first locking part comprises a sliding sheet which is connected to the bottom plate in a sliding way, two through holes which respectively correspond to the clearance long openings are formed in the sliding sheet, locking sheets are fixedly arranged on the side walls of the two through holes, the two headrest frames respectively penetrate through the two through holes, and a plurality of clamping grooves I are formed in one side of each headrest frame; one side of the sliding sheet is connected with an unlocking button, and one side of the unlocking button, which is far away from the sliding sheet, sequentially penetrates through the headrest front shell, the headrest rear shell and the headrest rear sleeve and extends out of the headrest rear sleeve.

The locking piece is inserted into the first clamping groove to realize locking in the downward direction, and the locking piece is separated from the first clamping groove to realize unlocking.

In a preferred embodiment, the locking piece is connected to the two through holes on the sliding piece at a position close to one side of the clamping groove, and the connection mode can be fixed connection or movable connection.

The second locking part comprises a second clamping groove which is formed in one side of the sliding block, a limiting frame is sleeved on the sliding block, a sliding groove which is positioned below the sliding block is formed in the sliding block, the bottom of the limiting frame is positioned in the sliding groove, and a limiting rod is arranged on the side face of the limiting frame; springs are arranged between the sliding sheets and the bottom plate and between the limiting frame and the bottom plate.

As a preferred embodiment, the limiting rod is inserted into the second clamping groove to realize locking in the backward direction, and the sliding sheet is separated from the second clamping groove to realize unlocking.

Preferably, the upper side wall of the first clamping groove is obliquely arranged, and the side wall of the second clamping groove close to the back shell of the headrest is obliquely arranged so as to realize upward and forward unlocking-free adjustment of the outer layer of the headrest body structure.

In one embodiment, the sliding sheet passes through the through hole on one side where the unlocking button is located and extends upwards vertically to form a vertical plate for the unlocking button to push, so that the unlocking button is pushed conveniently. The vertical plate which is vertically tilted is closely attached to the clearance long opening corresponding to the through hole so as to keep the stability of the up-and-down movement of the automobile headrest.

The automobile headrest has the advantages that the structure is simple, the lever and screw rod transmission mechanisms are reduced as much as possible, the processing and the manufacturing are easy, and the production cost of products is reduced; the utility model not only can realize the synchronous adjustment of the positions in the up-down direction and the front-back direction, but also can be easily unlocked with less effort by a driver; in addition, compared with the situation that the four-way headrest of the automobile seat in the prior art needs to be manually unlocked when being adjusted in the up-down front-back directions, the structure of the utility model can realize the convenience of operation that the manual unlocking is needed only when being adjusted in the down-down back directions, namely the outer-layer headrest body structure does not need to be manually unlocked when being adjusted upwards and forwards, and can be used by drivers and passengers more easily.

Drawings

FIG. 1 is a schematic view of an embodiment of an automotive headrest according to the present disclosure;

FIG. 2 is a schematic view of the structure of a headrest shield and a headrest front shell of the automotive headrest provided by the utility model;

fig. 3 is a schematic structural view of a headrest rear case of the headrest for an automobile provided by the utility model;

fig. 4 is a schematic structural view of a headrest protective cover of an automobile headrest provided by the utility model;

fig. 5 is a schematic view showing an internal structure of a headrest rear case of the headrest of the automobile provided by the utility model;

fig. 6 is a schematic view showing an internal structure of a headrest rear case of the headrest of the automobile provided by the utility model;

FIG. 7 is a schematic view of the four-way adjustment mechanism and rear housing of the automotive headrest provided by the present utility model;

fig. 8 is a schematic structural view of a four-way adjusting mechanism of an automobile headrest provided by the utility model;

fig. 9 is a schematic structural view of a slider of an automotive headrest provided by the utility model;

fig. 10 is a schematic view of a bottom view of a slide sheet of an automobile headrest provided by the utility model;

fig. 11 is a schematic bottom view of a slide sheet of an automobile headrest according to the present utility model.

Reference numerals illustrate:

1. a headrest protective cover;

2. a headrest front case;

3. a headrest rear shell;

4. a four-way adjusting mechanism; 401. a bottom plate; 402. a fixed box; 403. a headrest framework; 404. a clamping groove I; 405. a connecting frame; 406. a sliding sheet; 407. a limiting frame; 408. a limit rod; 409. a slide block; 410. a clamping groove II; 411. an unlock button; 412. a spring; 413. a connection hole; 414. a connecting groove; 415. a guide rail; 416. a support rod; 417. a locking plate;

5. a clearance long opening;

6. a connecting buckle;

7. the back of the headrest is sleeved;

8. the front of the headrest is sleeved.

Detailed Description

In the four-way adjusting mechanism of the automobile headrest, provided by the utility model, the adjusting part can realize four-way adjustment of the outer layer headrest body structure, the first locking part is used for locking the adjusting part in the downward direction, the second locking part is used for locking the adjusting part in the backward direction, namely, the outer layer headrest body structure does not need to be manually unlocked when being adjusted upwards and forwards, and the first locking part and the second locking part can be synchronously unlocked only by pushing the first locking part when being adjusted downwards and backwards, and the first locking part and the second locking part do not need to be pushed to have larger force when being pushed to be unlocked, so that the automobile headrest is convenient for a user to operate.

This structure four-way regulation is convenient, has overcome the defect that all need carry out manual unblock, easy mistake is adjusted to easy when four-way headrest of prior art carries out about four direction adjustment, and compact structure moreover, each parts processing is easy, and the precision requirement is not high, is difficult to take place mechanical failure, has not only improved the practicality greatly, still helps improving customer's driving comfort level.

The term "car headrest" may sometimes be referred to herein as "car seat headrest" or "four-way headrest". For simplicity of description, the term "headrest" may also be abbreviated, and they are used interchangeably in the same sense.

The technical scheme of the present utility model will be described below with reference to the accompanying drawings. It is apparent that the described examples are only some, but not all, embodiments of the utility model; and the structures shown in the drawings are merely schematic and do not represent a physical object. It is intended that all other embodiments obtained by those skilled in the art based on these embodiments of the present utility model fall within the scope of the present utility model. Moreover, the embodiments of the present utility model and the features and technical solutions of the embodiments may be combined with each other without collision.

It should be understood that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Examples

Referring to fig. 1 to 11, an automotive headrest specifically includes: the outer pillow body structure is provided with a four-way adjusting mechanism 4.

It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed.

The four-way adjusting mechanism 4 comprises a framework part which is arranged in the outer layer pillow body structure and is used for connecting an automobile seat, an adjusting part which can be adjusted in four directions up and down and front and back is arranged between the framework part and the outer layer pillow body structure, and the adjusting part is used for realizing four-way adjustment of the outer layer pillow body structure; the adjusting part is provided with a first locking part and a second locking part, the first locking part is used for locking the adjusting part in the downward direction, and the second locking part is used for locking the adjusting part in the backward direction.

It should be appreciated that the terms "(first)" and "(second)" etc. herein are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

The adjusting part in the four-way adjusting mechanism 4 can realize four-way adjustment of the outer layer pillow body structure, the first locking part is used for locking the adjusting part in the downward direction, the second locking part is used for locking the adjusting part in the backward direction, namely, the outer layer pillow body structure does not need to be manually unlocked when being adjusted upwards and forwards, and the first locking part and the second locking part can be synchronously unlocked only by pushing the first locking part when being adjusted downwards and backwards, and a large force is not needed when being pushed to be unlocked, so that the operation of a user is convenient.

Example 1

The four-way adjusting mechanism 4 of the automobile headrest comprises a framework part which is arranged in the outer-layer pillow body structure and used for being connected with an automobile seat, and an adjusting part which can be adjusted in four directions up and down and is used for realizing four-way adjustment of the outer-layer pillow body structure is arranged between the framework part and the outer-layer pillow body structure.

The first locking part and the second locking part are arranged in the adjusting part, the first locking part is used for locking the adjusting part in the downward direction, and the second locking part is used for locking the adjusting part in the backward direction, so that the outer layer pillow body structure cannot move downwards or backwards directly.

The locking part realizes forward adjustment of the outer pillow body structure when the locking part moves relative to the locking part;

the second locking part and the second locking part realize synchronous unlocking when synchronously moving, namely the second locking part can independently move and can also synchronously move with the locking part.

The outer pillow body structure comprises a support shell and a face cover structure arranged on the outer surface of the support shell, and the adjusting part is arranged in the support shell.

In the four-way adjusting mechanism 4 of the automobile headrest provided in embodiment 1, the adjusting portion can implement four-way adjustment of the upper, lower, front and rear directions of the outer layer headrest body structure, the first locking portion is used for locking the adjusting portion in the downward direction, the second locking portion is used for locking the adjusting portion in the backward direction, that is, the outer layer headrest body structure does not need to be manually unlocked when being adjusted upwards and forwards, and the first locking portion and the second locking portion can be synchronously unlocked only by pushing the first locking portion when being adjusted downwards and backwards, and large force is not needed when being pushed to be unlocked.

In the description herein, the terms "front (section)", "lower (side)" refer to a positional relationship with the normal sitting posture of the vehicle occupant as a reference direction, but do not mean that it is necessary to face a certain fixed direction in actual use operation, only for the purpose of showing the positional relationship or connection relationship between the respective components. Similarly, the terms "rear (end)", "upper (portion)", etc. do not constitute absolute spatial relationship limitations, but merely a concept of relative position, as will be readily appreciated by those skilled in the art.

Example 2

Further optimizing the car headrest provided in embodiment 1, specifically, as shown in fig. 1-4, the support housing includes a headrest front housing 2 and a headrest rear housing 3 connected by bolts, the connection and the disassembly between the headrest front housing 2 and the headrest rear housing 3 are facilitated by the bolts, and the headrest protection cover 1 is connected to the outer surface of the headrest rear housing 3 by means of a buckle.

The medial surface of headrest safety cover 1 installs a plurality of connection buckle 6, and a plurality of and connection buckle 6 adaptation buckle grooves have been seted up to headrest backshell 3 one side of keeping away from headrest front housing 2, connect buckle 6 and buckle groove joint, realize promptly that the connection through the buckle mode between headrest backshell 3 and the headrest safety cover 1, set up like this and can be convenient for carry out the dismouting to headrest safety cover 1.

The cover structure is including setting up the front cover 8 of headrest on headrest front housing 2 keeps away from headrest safety cover 1 one side, and headrest safety cover 1's surface is provided with behind the headrest cover 7, runs through between the bottom of cover 7 behind headrest rear housing 3, headrest safety cover 1 and the headrest and has seted up two and be used for the clearance long mouth 5 that skeleton portion tip stretched out, and clearance long mouth 5 adopts the long mouth setting, can provide required space for the regulation around.

The frame part comprises two headrest frames 403 located in the headrest rear shell 3, one ends of the two headrest frames 403 respectively extend out of the two clearance long openings 5, the other ends of the two headrest frames 403 are connected with a connecting frame 405 through bolts, and riveting can be adopted between the headrest frames 403 and the connecting frame 405, as shown in fig. 9.

Example 3

Further optimizing the automobile headrest provided in embodiment 1 or 2, as shown in fig. 5 to 11, the adjusting portion includes a base plate 401 slidably coupled between outer surfaces of two headrest frames 403, and a fixing case 402 is coupled to the base plate 401 by bolts so that the fixing case 402 is detachable from the base plate 401.

Both sides of the fixed box 402 are provided with connecting grooves 414, the inner walls of the two connecting grooves 414 are slidably connected with guide rails 415, the two guide rails 415 are fixedly installed on the inner walls of both sides of the headrest rear shell 3 respectively, the fixed box 402 and the headrest rear shell 3 can be connected together through the mutual matching of the guide rails 415 and the connecting grooves 414, the headrest rear shell 3 can be further supported, and the guide rails 415 and the connecting grooves 414 are slidably connected to ensure the front and back movement of the headrest rear shell 3.

Two connecting holes 413 are formed in the fixing box 402, supporting rods 416 are connected to the two connecting holes 413 in a penetrating mode, one ends of the two supporting rods 416 are fixedly connected with the headrest rear shell 3, the supporting rods 416 and the connecting holes 413 are matched with each other to support the headrest rear shell 3, and the connecting holes 413 and the supporting rods 416 are movable, namely the headrest rear shell 3 is not affected to move back and forth.

A slide block 409 is connected in the middle of the fixing box 402 in a penetrating way, and one end of the slide block 409 is fixedly connected with the headrest rear shell 3.

Example 4

5-11, the locking part I comprises a sliding sheet 406 slidably connected to the bottom plate 401, two through holes corresponding to the clearance long openings (5) are formed in the sliding sheet 406, locking pieces 417 are fixedly mounted on the side walls of the two through holes, the two headrest frameworks 403 respectively penetrate through the two through holes, a plurality of clamping grooves I404 are formed in one side of the two headrest frameworks 403, and the clamping grooves I404 on the two headrest frameworks 403 are located on the same side, namely, only one direction is required to move when the sliding sheet 406 is unlocked;

one side of the slide sheet 406 is connected with an unlocking button 411, one side of the unlocking button 411 away from the slide sheet 406 sequentially penetrates through the headrest front shell 2, the headrest rear shell 3 and the headrest rear sleeve 7 and stretches out of the headrest rear sleeve 7, and the slide sheet 406 can be driven to move when the unlocking button 411 is pushed, so that unlocking is realized.

The locking piece 417 is inserted into the first clamping groove 404 to realize locking in a downward direction, and the locking piece 417 is separated from the first clamping groove 404 to realize unlocking.

Preferably, the locking piece (417) is connected to the through hole of the sliding piece (406) at a position close to one side of the clamping groove one (404). The connection mode can be fixed connection or movable connection.

The second locking part comprises a plurality of clamping grooves 410 formed in one side of the sliding block 409, the sliding block 409 is sleeved with a limiting frame 407, the sliding block 406 is provided with a sliding groove positioned below the sliding block 409, the bottom of the limiting frame 407 is positioned in the sliding groove, and the side face of the limiting frame 407 is provided with a limiting rod 408.

Springs 412 are provided between the slide 406 and the bottom plate 401 and between the stopper 407 and the bottom plate 401.

Because the spring 412 only needs to push the slide 406 and the limiting frame 407 to return, the spring 412 does not need to use a larger elastic force, so that a user can conveniently operate the unlocking button 411 without using a larger force.

The limiting rod 408 is inserted into the clamping groove II 410 to realize locking in the backward direction, and the sliding sheet 406 is separated from the clamping groove II 410 to realize unlocking.

The upper side wall of the clamping groove I404 is obliquely arranged, and the side wall of the clamping groove II 410, which is close to the headrest rear shell 3, is obliquely arranged for realizing upward and forward unlocking-free adjustment of the outer layer headrest body structure.

The upper side wall of the clamping groove one 404 positioned at the uppermost part is not provided with inclination, so that the two-way locking can be realized when the headrest rear shell 3 rises to the highest position.

Preferably, the sliding sheet (406) passes through a through hole at one side where the unlocking button (411) is located and extends upwards vertically to form a vertical plate, so that the unlocking button (411) can be propped against, and the unlocking button (411) can be pushed conveniently. The vertical plate which is vertically tilted is closely attached to the clearance long opening (5) corresponding to the through hole so as to keep the stability of the up-and-down movement of the automobile headrest.

When the automobile headrest is adopted, a driver can adjust the direction, and the operation steps are, for example, inserting two headrest frameworks 403 at the top of the automobile seat, directly pushing the outer layer pillow body structure upwards when upward adjustment is needed, and the inclined arrangement of the upper side wall of the clamping groove I404 can squeeze the locking piece 417, so that the sliding piece 406 moves, unlocking is realized, and the upward adjustment can be realized without manual unlocking.

When the outer pillow body structure is adjusted forwards, the outer pillow body structure is directly pushed forwards, and the limiting rod 408 can be extruded through the inclined arrangement of the side wall of the clamping groove II 410, so that unlocking is achieved, namely, the outer pillow body structure can be adjusted forwards without manual unlocking.

The unlocking button 411 is pushed, the slide sheet 406 is pushed to move through the unlocking button 411, the slide sheet 406 drives the lock sheet 417 to be separated from the clamping groove one 404, the outer pillow body structure can be downwards or upwards adjusted at the moment, one end of the limiting frame 407 is driven when the slide sheet 406 moves, the limiting rod 408 is separated from the clamping groove two 410, the outer pillow body structure can be backwards or forwards adjusted at the moment, the unlocking button 411 is released after the adjustment is finished, and the acting force of the spring 412 pushes the slide sheet 406 and the limiting frame 407 to reset at the moment, so that locking is realized.

The above description is only of the preferred embodiments of the present utility model; the scope of the utility model is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present utility model, and the technical solution and the improvement thereof are all covered by the protection scope of the present utility model.

Claims (10)

1. An automobile headrest is characterized by comprising an outer layer pillow body structure and a four-way adjusting mechanism (4) arranged in the outer layer pillow body structure;

the four-way adjusting mechanism (4) comprises a framework part which is arranged in the outer layer pillow body structure and is used for being connected with an automobile seat, an adjusting part which can be adjusted in four directions up and down and front and back is arranged between the framework part and the outer layer pillow body structure, and the adjusting part is used for realizing four-way adjustment of the outer layer pillow body structure;

the first locking part and the second locking part are arranged in the adjusting part, the first locking part is used for locking the adjusting part in the downward direction, the second locking part is used for locking the adjusting part in the backward direction, and when the locking part moves relative to the first locking part, the forward adjustment of the outer pillow body structure is realized; and when the second locking part and the locking part move synchronously, synchronous unlocking is realized.

2. The automotive headrest of claim 1, wherein the outer layer headrest body structure comprises a support housing and a face cover structure disposed on an outer surface of the support housing, the adjustment portion being located in the support housing;

the support shell comprises a headrest front shell (2) and a headrest rear shell (3) which are connected through bolts, and a headrest protection cover (1) is connected to the outer surface of the headrest rear shell (3) in a buckling manner;

the face cover structure is including setting up the front cover (8) of headrest on headrest front shell (2) keep away from headrest safety cover (1) one side, the surface of headrest safety cover (1) is provided with behind the headrest cover (7), run through between the bottom of headrest rear shell (3), headrest safety cover (1) and behind the headrest cover (7) and have offered two keep away empty long mouthfuls (5) that are used for skeleton portion tip to stretch out.

3. Automotive headrest according to claim 1 or 2, characterized in that the frame part comprises two headrest frames (403) in the headrest rear shell (3), one end of each of the two headrest frames (403) extends from two clearance long openings (5), and the other end of each of the two headrest frames (403) is connected with a connecting frame (405) by bolts.

4. The headrest for vehicles according to claim 2, characterized in that the adjustment portion comprises a base plate (401) slidingly connected between the outer surfaces of two headrest frames (403), the base plate (401) being connected with a fixing box (402) by means of bolts;

connecting grooves (414) are formed in two sides of the fixed box (402), guide rails (415) are slidably connected to the inner walls of the two connecting grooves (414), and the two guide rails (415) are fixedly installed on the inner walls of two sides of the headrest rear shell (3) respectively;

two connecting holes (413) are formed in the fixed box (402), support rods (416) are connected in the two connecting holes (413) in a penetrating mode, and one ends of the two support rods (416) are fixedly connected with the headrest rear shell (3);

the middle part of fixed box (402) is connected with slider (409) in a penetrating way, the one end of slider (409) and headrest backshell (3) fixed connection.

5. The headrest of claim 4, wherein the first locking portion comprises a sliding sheet (406) slidably connected to the bottom plate (401), two through holes are formed in the sliding sheet (406), locking pieces (417) are fixedly installed on side walls of the two through holes, the two headrest frameworks (403) respectively penetrate through the two through holes respectively corresponding to the clearance long openings (5), and a plurality of clamping grooves I (404) are formed in one side of each of the two headrest frameworks (403);

one side of the sliding sheet (406) is connected with an unlocking button (411), and one side of the unlocking button (411) far away from the sliding sheet (406) sequentially penetrates through the headrest front shell (2), the headrest rear shell (3) and the headrest rear sleeve (7) and stretches out of the headrest rear sleeve (7).

6. The headrest of claim 5, wherein the locking tab (417) is inserted into the first slot (404) to effect locking in a downward direction and wherein the locking tab (417) is separated from the first slot (404) to effect unlocking.

7. The automobile headrest according to claim 5, wherein the locking part comprises a plurality of clamping grooves II (410) formed in one side of the sliding block (409), a limiting frame (407) is sleeved on the sliding block (409), a sliding groove positioned below the sliding block (409) is formed in the sliding block (406), the bottom of the limiting frame (407) is positioned in the sliding groove, and a limiting rod (408) is arranged on the side face of the limiting frame (407);

springs (412) are arranged between the sliding sheets (406) and the bottom plate (401) and between the limiting frame (407) and the bottom plate (401).

8. The headrest of claim 7, wherein the stop lever (408) is inserted into the second slot (410) to lock the headrest in a rearward direction, and wherein the slide (406) is separated from the second slot (410) to unlock the headrest.

9. The headrest of claim 7, wherein the locking tab (417) is connected to the slide (406) at a location near one side of the slot (404) at a through hole.

10. The headrest of claim 9, wherein an upper side wall of the first clamping groove (404) is obliquely arranged, and a side wall of the second clamping groove (410) close to the rear headrest shell (3) is obliquely arranged so as to realize upward and forward unlocking-free adjustment of the outer-layer headrest body structure.