CN220720887U - Seat headrest and vehicle - Google Patents

Abstract

The utility model provides a seat headrest and a vehicle, wherein the seat headrest comprises a headrest body arranged on a headrest rod, an unlocking part arranged on the headrest body, a transmission mechanism and a first elastic piece arranged between the headrest rod and the headrest body, and the first elastic piece can release energy to drive the headrest body to rotate relative to the headrest rod. The transmission mechanism comprises a limiting part, a transmission piece and a second elastic piece. The unlocking part is operated to drive the transmission part to slide and separate from the limit of the limit part, the headrest body is driven to turn over relative to the headrest rod under the action of external force or the energy release action of the first elastic part to be in a use state or a folding state folded above the headrest rod, and the second elastic part is used to drive the transmission part to return so that the transmission part is limited by the limit part and keeps the use state or the folding state. The seat headrest provided by the utility model is simple to operate, avoids a complicated unlocking process, and can effectively ensure reliable switching action of the seat headrest.

Description

Seat headrest and vehicle

Technical Field

The utility model relates to the technical field of seat headrests, in particular to a seat headrest. The utility model also relates to a vehicle provided with the seat headrest.

Background

When a driver drives the vehicle, the headrest of the rear-row seat can be folded, so that a wider rearview field is provided for the driver, and the driving safety is greatly improved. When the back row seat backrest is put flat, the headrest can be folded, so that the problem of interference with the front row seat when the back row seat backrest is folded is avoided.

For the automobile seat headrest commonly used at present, most of the automobile seat headrest has only an up-down adjusting function, and in order to adapt to the situation, part of automobiles are folded by adopting a mode of unlocking a pull belt or unlocking a button. However, the existing headrest folding mechanism is complex in internal folding structure, the unlocking mechanism is large in size, the corresponding headrest is large in size, and the view field of the rearview mirror of the driver is reduced. In addition, the existing headrest folding mechanism requires multiple parts to cooperate to move when the headrest is folded and the using state is switched due to the complex structure, and one part is in failure in cooperation, so that the headrest switching cannot be implemented, the reliability is low, faults are easy to occur, the operation mode is very inconvenient, and the using comfort of passengers is reduced.

Disclosure of Invention

In view of the above, the present utility model aims to provide a headrest for a seat, which has a simple switching structure and ensures the reliability of switching operation.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the seat headrest comprises a headrest body arranged on a headrest rod, an unlocking part arranged on the headrest body, a transmission mechanism connected between the unlocking part and the headrest rod in a transmission way, and a first elastic piece arranged between the headrest rod and the headrest body, wherein the first elastic piece can release energy to drive the headrest body to rotate relative to the headrest rod;

the transmission mechanism comprises a limiting part arranged on the headrest rod, a transmission piece which is arranged on the headrest body and can be limited to rotate by the limiting part, and a second elastic piece arranged between the headrest body and the transmission piece;

the unlocking part is operated to drive the transmission part to slide and enable the transmission part to be separated from the limit of the limiting part, the headrest body can be driven to turn over relative to the headrest rod under the action of external force or the energy release action of the first elastic part to be in a use state or a folding state folded above the headrest rod, and the second elastic part is used for driving the transmission part to return so as to enable the transmission part to be limited by the limiting part and keep the use state or the folding state.

Further, the limiting part comprises a limiting piece arranged on the headrest rod, a limiting groove is formed in the limiting piece, and a limiting plate capable of being inserted into the limiting groove is arranged on the transmission piece;

when the limiting plate is inserted into the limiting groove, the transmission piece is limited by the limiting part, and the transmission piece slides to enable the limiting plate to be separated from the limiting groove and separate from the limitation of the limiting part.

Further, the headrest rod comprises two upright rod parts which are oppositely arranged, and a cross rod part connected between the two upright rod parts;

the headrest body is sleeved on the cross rod part, and the transmission piece is slidably arranged on the headrest body along the length direction of the cross rod part.

Further, the unlocking part comprises a button which is arranged on the headrest body in a sliding mode, and the button can push the transmission piece to slide when being pressed.

Further, the button pushes the transmission piece to slide through an elastic piece arranged on the headrest body.

Further, the elastic piece is provided with a connecting end connected with the headrest body and a pushing end extending towards the button;

the pushing end is abutted with the transmission piece.

Further, the button comprises a button body which is arranged on the headrest body in a sliding manner, and a third elastic piece which is used for driving the button body to return.

Further, an elastic buffer piece is arranged on the limiting piece and/or the headrest rod, and the elastic buffer piece is used for being abutted to the headrest body.

Further, the transmission piece and/or the headrest body are provided with abutting ribs, and the abutting ribs extend along the sliding direction of the transmission piece;

the transmission piece is abutted with the headrest body through the abutting rib.

Compared with the prior art, the utility model has the following advantages:

according to the seat headrest disclosed by the utility model, the first elastic piece is arranged between the headrest rod and the headrest body, the transmission piece slides relative to the limiting part through operating the unlocking part, when the unlocking part is separated from the limitation of the limiting part, the first elastic piece releases energy to enable the headrest to be automatically switched from a use state to a folding state, and the second elastic piece returns to enable the unlocking part to be limited by the limiting part so as to keep the folding state. When the headrest is required to be switched to the use state, the unlocking part is driven to be separated from the limit of the limiting part, the headrest is manually acted to apply force to the use state, and the limiting part is limited to rotate by the second elastic piece to enable the unlocking part to be kept in the use state.

The seat headrest can be switched into the folded state only by pressing the unlocking part by one hand, and when the headrest is required to be switched into the use state, the force is applied to the headrest while the unlocking part is pressed, so that the complicated unlocking process is avoided, and the switching action reliability of the seat headrest can be effectively ensured.

In addition, through setting up the locating part on the headrest pole, be equipped with the limiting plate on the driving medium, when driving the driving medium, can make the limiting plate slide in the spacing groove to realize the locking and the switching of the relative headrest pole's of headrest service condition and folding state. Simple structure, easy implementation, small occupied area and convenient increase of the view field of the rearview mirror.

In addition, the unlocking part is provided with a button capable of pushing the transmission part to enable the transmission part to slide, so that the operation is convenient, and the use comfort of passengers is improved. And an elastic piece is arranged between the button and the transmission piece, so that the transmission piece can be elastically pushed to slide, and a certain buffer effect is realized when the second elastic piece rebounds when the button is released.

And, through setting up the elastic buffer on locating part and/or headrest pole, so that the headrest is switched from the service condition to buffer the state, no impact noise. And the butt joint ribs are arranged on the transmission part and/or the headrest body, so that the transmission part is in line contact with the headrest body in the sliding process, the friction force is reduced, and the Huadong effect of the transmission part is ensured.

Another object of the present utility model is to propose a vehicle on the seat of which a seat headrest as described above is provided.

According to the vehicle, the seat headrest is arranged, so that the seat headrest can be switched between the use state and the folding state more conveniently, and the use comfort of the vehicle is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic view of a seat headrest in a use state according to an embodiment of the present utility model;

fig. 2 is a schematic view showing a folded state of a headrest for a seat according to an embodiment of the present utility model;

FIG. 3 is a view of a first view of a seat headrest in use without a headrest facing, foamed, folded, embedded plastic according to an embodiment of the present utility model;

FIG. 4 is a block diagram of a second view of a seat headrest in use without a headrest facing, foamed, folded, and embedded plastic according to an embodiment of the present utility model;

fig. 5 is a schematic view of an installation structure of an unlocking part, a folding embedded plastic, a first elastic member and a transmission member in a using state of a headrest of a seat according to an embodiment of the utility model;

FIG. 6 is a schematic view of a headrest of a seat according to an embodiment of the present utility model, excluding a headrest cover, foam, rear cover, rear trim cover;

fig. 7 is a schematic view of an installation structure of a folding embedded plastic, an unlocking part and a second elastic piece according to an embodiment of the utility model;

FIG. 8 is a first view of a seat headrest in a folded configuration without headrest facings, foam, and folded interior plastic, according to an embodiment of the present utility model;

FIG. 9 is a block diagram of a second view of a seat headrest in a folded condition without headrest facings, foamed, folded interior plastic, according to an embodiment of the present utility model;

fig. 10 is a schematic view of a structure of a headrest in a folded state of a headrest of a seat according to an embodiment of the present utility model, excluding a headrest cover, a foam, a rear cover, and a rear trim cover;

fig. 11 is a schematic structural diagram of a transmission member according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a headrest body; 2. a headrest rod; 3. an unlocking part; 4. a transmission mechanism; 5. a first elastic member; 6. an elastic buffer member; 7. a rear cover; 8. a rear decorative cover; 9. folding the embedded plastic;

101. abutting the rib;

201. a pole setting part; 202. a crossbar portion;

301. a button; 302. an elastic sheet;

401. a limiting piece; 402. a transmission member; 403. a second elastic member;

901. a groove; 902. convex ribs;

3011. a third elastic member;

3021. a connecting end 3022 and a pushing end;

4011. a limit groove; 4012. a limiting plate;

4021. a pass through slot; 4022. ribs; 4023. flanging; 4024. and pushing the block.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In addition, the terms "first," "second," are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The present embodiment relates to a seat headrest, which includes a headrest body 1 provided on a headrest rod 2, an unlocking portion 3 provided on the headrest body 1, a transmission mechanism 4 drivingly connected between the unlocking portion 3 and the headrest rod 2, and a first elastic member 5 provided between the headrest rod 2 and the headrest body 1, the first elastic member 5 being released to enable the headrest body 1 to be driven to rotate relative to the headrest rod 2.

The transmission mechanism 4 includes a stopper portion provided on the headrest rod 2, a transmission member 402 provided on the headrest body 1 and capable of being restricted from rotating by the stopper portion, and a second elastic member 403 provided between the headrest body 1 and the transmission member 402. The unlocking part 3 is operated to drive the transmission member 402 to slide, and the transmission member 402 is separated from the limitation of the limiting part, under the action of external force or the action of energy release of the first elastic member 5, the headrest body 1 can be driven to turn over relative to the headrest rod 2 to be in a use state or a folded state above the headrest rod 2, and the second elastic member 403 is used for driving the transmission member 402 to return to enable the transmission member 402 to be limited by the limiting part to be in a use state or a folded state.

In the seat headrest of the present embodiment, the first elastic member 5 is disposed between the headrest rod 2 and the headrest body 1, and the unlocking portion 3 is operated to slide the transmission member 402 relative to the limiting portion, when the unlocking portion 3 is separated from the limitation of the limiting portion, the first elastic member 5 is released to automatically switch the headrest from the use state to the folded state, and the second elastic member 403 is returned to enable the unlocking portion 3 to be limited by the limiting portion to maintain the folded state. When the headrest is required to be switched to the use state, the unlocking part 3 is driven to release the limit of the limiting part, the headrest is manually acted to apply force to the use state, and the limiting part limiting unlocking part 3 is rotated by the second elastic piece 403 in a returning mode, so that the headrest is kept in the use state.

By means of the arrangement, the seat headrest can be switched to the folded state only by pressing the unlocking part 3 with one hand, and when the headrest is required to be switched to the use state, the headrest is forced while the unlocking part 3 is pressed, so that a complicated unlocking process is avoided, and the switching action reliability of the seat headrest can be effectively ensured.

Based on the above overall description, an exemplary structure of the seat headrest of the present embodiment has a bent portion extending forward and downward of the vehicle body on a side of the upper portion of the headrest rod 2 away from the opening, and the headrest body 1 is fitted over the front end of the bent portion. As shown in fig. 1, the headrest body 1 is in a use state when a passenger takes a car relatively vertically, and as shown in fig. 2, when the headrest body 1 is folded to be abutted against the headrest rod 2, the headrest body 1 is relatively horizontal, so that the view of a rear mirror of a driver can be increased, and the driving convenience of the driver can be increased.

Preferably, the limiting part comprises a limiting part 401 arranged on the headrest rod 2, a limiting groove 4011 is formed in the limiting part 401, and a limiting plate 4012 capable of being inserted into the limiting groove 4011 is arranged on the transmission part 402. When the limiting plate 4012 is inserted into the limiting groove 4011, the transmission piece 402 is limited by the limiting portion, and the transmission piece 402 slides to enable the limiting plate 4012 to be separated from the limiting groove 4011 and separate from the limitation of the limiting portion. In a specific structure, as shown in fig. 3 to 5, the stopper 401 is welded to the headrest rod 2.

As shown in fig. 1 to 6, the headrest body 1 of the present embodiment includes a headrest cover, a foamed and folded plastic 9, and a rear cover 7, which are fastened to each other from outside to inside. The connection mode adopts the prior art means and is not described in detail herein. The unlocking part 3 and the transmission mechanism 4 are arranged on the folding embedded plastic 9, and in order to achieve a good use effect, the folding embedded plastic 9 is further provided with a rear decorative cover 8 which can be used for caring the headrest rod 2 in a folded state, and when the headwear body is in a use state, the rear decorative cover 8 can increase the aesthetic property.

As shown in fig. 5, the limiting member 401 is formed into a U-shape, the limiting plate 4012 is a rib plate on two sides, the limiting grooves 4011 are formed in the rib plates on two sides of the opening of the limiting member 401, the limiting grooves 4011 penetrate through the limiting plate 4012 along the sliding direction of the driving member 402, and in combination with fig. 3 to 4, the driving member 402 is formed into a planar plate structure, two through grooves 4021 corresponding to the limiting plate 4012 are formed in one side of the driving member 402, close to the limiting member 401, and when the driving member 402 is driven to slide by the unlocking portion 3 to a position corresponding to the limiting plate 4012 through the grooves 4021, the energy is released through the first elastic member 5 so that the limiting member 401 and the driving member 402 can rotate relatively, and the headrest body 1 can automatically rotate to a folded state.

The headrest pole 2 of the present embodiment includes two pole portions 201 arranged opposite to each other, and a cross bar portion 202 connected between the two pole portions 201. The headrest body 1 is sleeved on the cross bar portion 202, and the transmission member 402 is slidably arranged on the headrest body 1 along the length direction of the cross bar portion 202. As shown in fig. 1 and 2, the headrest rod 2 of the present embodiment is composed of two upright portions 201 and a cross bar portion 202 provided between the two upright portions 201, is integrally provided in a U-shape, and is formed by bending a steel rod. The headrest body 1 and the stopper 401 are driven to rotate with respect to the rail portion 202 to achieve switching between the use state and the folded state.

As a preferred embodiment, the unlocking portion 3 of the present embodiment includes a button 301 slidably provided on the headrest body 1, and the button 301 is pushed by a pushing force to slide the transmission member 402. In a specific structure, as shown in fig. 3 to 7, a button 301 is provided on the side of the headrest body 1, and the button 301 is a conventional circular push button 301. The unlocking part 3 is provided with the button 301 capable of pushing the transmission piece 402 to slide, so that the structure is simple and the operation is convenient.

In addition, as shown in fig. 7, the folded embedded plastic 9 of the present embodiment is an injection molding piece, on which a plurality of protrusions are provided, one of the protrusions has a clamping groove for accommodating one end of the first elastic member 5, the clamping groove is L-shaped, and the first elastic member 5 is a torsion spring, which is sleeved on the cross bar portion 202. One side of the first elastic member 5 is inserted into the clamping groove, and the other side is hung and buckled on the transmission member 402. When the headrest is in a use state, one side of the first elastic member 5 is blocked, and when the transmission member 402 slides, the first elastic member 5 is separated from the blocking groove, and the headrest body 1 is folded by releasing energy of the torsion spring.

As shown in fig. 7, a groove 901 for placing the second elastic member 403 is further provided in the folded embedded plastic 9, and a convex rib 902 protruding upwards is provided in the groove 901, and one end of the second elastic member 403 is hung and buckled on the convex rib 902. The transmission member 402 is provided with a flange 4023 turned over in the direction of the folded embedded plastic 9, and the other end of the second elastic member 403 is hooked with the flange 4023. When the second elastic member 403 is stretched or reset, the second elastic member is disposed in the groove 901, so as to avoid interference, and ensure that the reset action of the transmission member 402 is smoother.

Preferably, the button 301 pushes the driving member 402 to slide through the elastic piece 302 provided on the headrest body 1. As shown in fig. 3 to 7, an elastic piece 302 is provided at the tail end of the button 301, a push block 4024 corresponding to the position of the button 301 is provided on the transmission member 402, and the button 301 is pressed to push the push block 4024, so that the transmission member 402 slides to a side far from the button 301. In this embodiment, the elastic piece 302 is disposed between the button 301 and the transmission member 402, so that the transmission member 402 can be elastically pushed to slide, so that a certain buffering effect is provided when the second elastic member 403 rebounds when the button 301 is released.

Further, the elastic piece 302 has a connection end 3021 connected to the headrest body 1, and a pushing end 3022 extending toward the push button 301. The pushing end 3022 abuts against the transmission member 402. In a specific structure, as shown in fig. 7, a receiving space for receiving the elastic piece 302 is formed in the headrest body 1, and one end of the elastic piece 302 is engaged in the receiving space, and the other end corresponds to the position of the button 301. The elastic piece 302 in this embodiment is a bending piece formed by bending multiple sections, so as to improve the buffering effect of the elastic piece.

Specifically, the button 301 includes a button 301 body slidably provided on the headrest body 1, and a third elastic member 3011 for urging the button 301 body back. As shown in fig. 4 to 7, the button 301 body of the present embodiment is inserted on the headrest body 1 so as to be manually operated. The third elastic member 3011 is provided in the button 301 body, and stores energy by pressing the button 301, and when the button 301 is released, the button 301 is reset by releasing energy from the third elastic member 3011.

Preferably, the limiting member 401 is provided with an elastic buffer member 6, and the elastic buffer member 6 is used for abutting against the headrest body 1. As shown in fig. 6 to 10, the limiting member 401 of the present embodiment is fastened with an elastic buffer member 6, when the headrest body 1 rotates from the use state to the folded state, the rear cover 7 of the headrest body 1 abuts against the elastic buffer member 6, so as to prevent the noise generated by the mechanical collision after the headrest body 1 is in place. Of course, the elastic cushion 6 may also be provided on the headrest rod 2.

The headrest body 1 is provided with the abutment ribs 101, the abutment ribs 101 extend in the sliding direction of the transmission member 402, and the transmission member 402 abuts against the headrest body 1 via the abutment ribs 101. In a specific structure, as shown in fig. 7, the headrest body 1 is provided with abutment ribs 101 protruding toward the transmission member 402, and the four abutment ribs 101 are intermittently provided and correspond to the four corners of the transmission member 402.

As shown in fig. 11, a rib 4022 protruding toward the rear cover 7 is provided on the side of the transmission member 402 near the rear cover 7 in the present embodiment, and the rib 4022 abuts against the rear cover 7. And through setting up rib 4022 on driving medium 402, be equipped with butt muscle 101 on headrest body 1, make driving medium 402 and headrest body 1 line contact in the slip in-process, reduce frictional force, guarantee driving medium 402's slip effect.

And, as shown in fig. 3 to 4, two elongated slots are arranged along the sliding direction on the driving member 402, and bolts screwed on the folding embedded plastic 9 are arranged at positions corresponding to the elongated slots, so that the bolts play a role in limiting the sliding distance of the driving member 402, and can also avoid falling or tilting in the sliding process of the driving member 402, ensure the sliding effect of the driving member 402, and further ensure the stability of the seat headrest in folding and state switching during use.

The operating principle of the seat headrest of the present embodiment is as follows, as shown in fig. 4 to 9, in the use state, the transmission member 402 can slide in the limit groove 4011, when the button 301 is pressed, the transmission member 402 is pushed to slide, and when the limit groove 4011 of the button 301 corresponds to the through groove 4021, the first elastic member 5 elastically releases energy to drive the transmission member 402 to rotate relative to the limit member 401, and the seat headrest is folded in the rear direction. At this time, when the button 301 is released, the transmission member 402 is dislocated from the passage groove 4021, and the transmission member 402 abuts against the side surface of the stopper 401 due to the second elastic member 403, so that the state stability of the seat headrest in the folded state is realized.

When the button 301 needs to be switched to a use state, the button 301 is pressed again, so that the transmission member 402 and the limiting member 401 are separated from each other, the headrest body 1 is pulled to be in place manually, the transmission member 402 is correspondingly arranged in the limiting groove 4011 of the limiting member 401, and when the button 301 is released, the transmission member 402 slides and resets due to the energy release of the second elastic member 403, so that the through groove 4021 and the limiting member 401 are misplaced, and locking in the use state is realized.

The seat headrest of this embodiment can be switched to the folded state by only pressing the unlocking part 3 with one hand, and when the headrest is required to be switched to the use state, the force is applied to the headrest while pressing the unlocking part 3, so that the complicated unlocking process is avoided, and the reliable switching action of the seat headrest can be effectively ensured.

The present embodiment also relates to a vehicle having a seat headrest as described above provided on a seat thereof.

According to the vehicle, the seat headrest is arranged, so that the seat headrest can be switched between the use state and the folding state more conveniently, and the use comfort of the vehicle is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. A seat headrest, characterized in that:

the novel headrest comprises a headrest body (1) arranged on a headrest rod (2), an unlocking part (3) arranged on the headrest body (1), a transmission mechanism (4) connected between the unlocking part (3) and the headrest rod (2) in a transmission way, and a first elastic piece (5) arranged between the headrest rod (2) and the headrest body (1), wherein the first elastic piece (5) can release energy to drive the headrest body (1) to rotate relative to the headrest rod (2);

the transmission mechanism (4) comprises a limit part arranged on the headrest rod (2), a transmission member (402) arranged on the headrest body (1) and capable of being limited by the limit part to rotate, and a second elastic member (403) arranged between the headrest body (1) and the transmission member (402);

the unlocking part (3) is operated to drive the transmission part (402) to slide, the transmission part (402) is separated from the limit of the limit part, the headrest body (1) can be driven to turn over relative to the headrest rod (2) under the action of external force or the energy release effect of the first elastic part (5) to be in a use state or a folding state folded above the headrest rod (2), and the second elastic part (403) is used for driving the transmission part (402) to return so that the transmission part (402) is limited by the limit part and keeps the use state or the folding state.

2. The seat headrest according to claim 1, wherein:

the limiting part comprises a limiting part (401) arranged on the headrest rod (2), a limiting groove (4011) is formed in the limiting part (401), and a limiting plate (4012) capable of being inserted into the limiting groove (4011) is arranged on the transmission part (402);

when the limiting plate (4012) is inserted into the limiting groove (4011), the transmission piece (402) is limited by the limiting part, and the transmission piece (402) can slide to enable the limiting plate (4012) to be separated from the limiting groove (4011) and separate from the limitation of the limiting part.

3. The seat headrest according to claim 1, wherein:

the headrest rod (2) comprises two upright rod parts (201) which are oppositely arranged, and a cross rod part (202) connected between the two upright rod parts (201);

the headrest body (1) is sleeved on the cross rod part (202), and the transmission piece (402) is slidably arranged on the headrest body (1) along the length direction of the cross rod part (202).

4. The seat headrest according to claim 1, wherein:

the unlocking part (3) comprises a button (301) which is arranged on the headrest body (1) in a sliding mode, and the button (301) can push the transmission piece (402) to slide when being pressed.

5. The seat headrest as claimed in claim 4, wherein:

the button (301) pushes the transmission piece (402) to slide through an elastic piece (302) arranged on the headrest body (1).

6. The seat headrest as claimed in claim 5, wherein:

the elastic piece (302) is provided with a connecting end (3021) connected with the headrest body (1) and a pushing end (3022) extending towards the button (301);

the pushing end (3022) is abutted with the transmission piece (402).

7. The seat headrest according to claim 1, wherein:

the button (301) comprises a button (301) body which is arranged on the headrest body (1) in a sliding mode, and a third elastic piece (3011) which is used for driving the button (301) body to return.

8. The seat headrest as claimed in claim 2, wherein:

the headrest is characterized in that the limiting piece (401) and/or the headrest rod (2) are/is provided with an elastic buffer piece (6), and the elastic buffer piece (6) is used for being abutted to the headrest body (1).

9. The seat headrest according to any one of claims 1 to 8, wherein:

the transmission member (402) and/or the headrest body (1) are provided with abutting ribs (101), and the abutting ribs (101) extend along the sliding direction of the transmission member (402);

the transmission member (402) is abutted with the headrest body (1) through the abutting rib (101).

10. A vehicle, characterized in that:

a seat headrest according to any one of claims 1 to 9 provided on a seat of the vehicle.