Headrest, seat and vehicle

Abstract

The utility model provides a headrest, a seat and a vehicle, the headrest comprises a headrest assembly and a headrest framework, one end of the headrest framework is connected with the headrest assembly, the other end of the headrest framework is used for being connected with a backrest assembly, the headrest framework comprises a guide sleeve, a headrest rod, a first locking assembly and a second locking assembly, the headrest rod is arranged in the guide sleeve in a penetrating mode, and the first locking assembly and the second locking assembly are arranged in the guide sleeve. The headrest rod is arranged on the guide sleeve and can move up and down along the guide sleeve, the first locking assembly is used for keeping the headrest rod at a limiting position when the headrest rod moves up and down, and the second locking assembly is used for limiting the headrest rod from being separated from the guide sleeve when the headrest rod moves upwards to the highest height position. The headrest can solve the problems that in the prior art, when a user operates the headrest to ascend and descend, the locking piece needs to be unlocked, at the moment, the headrest rod is easily pulled out of the guide sleeve through misoperation, and the wire is pulled off and damaged.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a headrest, a seat and a vehicle. Background Art

[0002] The seat headrest in the prior art generally includes a headrest rod connected to the headrest assembly and a guide sleeve connected to the backrest. The headrest is raised and lowered by the sliding of the headrest rod in the guide sleeve and the corresponding locking parts. However, with the improvement of seat function requirements, electrical components such as speakers and ventilation equipment can be arranged in the headrest, and the wires of the above-mentioned equipment are often passed through the inside of the headrest rod and connected to the seat power supply module or control module. However, the user needs to unlock the locking part when operating the headrest to raise and lower it. At this time, it is easy to pull the headrest rod out of the guide sleeve due to error operation, causing the wire to be pulled off and damaged. Utility Model Content

[0003] In view of this, the present application provides a headrest, a seat and a vehicle to solve the problem in the prior art that the headrest rod is accidentally pulled out when raising or lowering the headrest, causing damage to the wire.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A headrest, comprising a headrest assembly and a headrest frame, wherein one end of the headrest frame is connected to the headrest assembly, and the other end is used to connect to the backrest assembly, the headrest frame comprises a guide sleeve, a headrest rod, a first locking assembly and a second locking assembly, and the headrest rod is inserted into the guide sleeve and can move up and down along the guide sleeve;

[0006] The first locking assembly is used to keep the headrest rod in a limited position when it moves up and down;

[0007] The second locking assembly is used for limiting the headrest rod from coming out of the guide sleeve when the headrest rod moves upward to the highest position.

[0008] Optionally, the first locking assembly includes a first locking portion and a first limiting groove, the first locking portion is arranged at the top end of the guide sleeve, the headrest rod is provided with the first limiting groove along the height direction, and the first locking portion and the first limiting groove form an unlocked or locked state.

[0009] The second locking assembly includes a second locking portion and a second limiting groove, the position of the second limiting groove is not higher than the position of the first limiting groove that sets the height of the headrest to the highest position, and the second locking portion is located at the top end of the guide sleeve and forms an unlocked or locked state with the second limiting groove.

[0010] Optionally, a mounting shell is further provided at the top of the guide sleeve, the top and bottom surfaces of the mounting shell are provided with insertion openings for the headrest rod to pass through, and the side surfaces of the mounting shell are provided with a notch;

[0011] The second locking portion includes a locking plate and an elastic member, a through hole matching the insertion port is provided in the middle of the locking plate, and a clamping plate is provided in the through hole;

[0012] The locking plate and the elastic member are movably extended into the cavity of the mounting shell through the notch so that: when the elastic member is in an extended state, the clamping plate is locked with the second limiting groove, and when the elastic member is in a compressed state, the clamping plate is disengaged from the second limiting groove.

[0013] Optionally, the headrest further includes a decorative cover, the decorative cover is connected to the mounting shell, and the operating portion of the locking plate is accommodated inside the decorative cover.

[0014] Optionally, the second limiting groove includes a horizontal portion and an inclined portion, the horizontal portion forming a lower side of the second limiting groove abutting against the lower surface of the clip-on plate, and the inclined portion is connected to the horizontal portion and inclined to the upper right along the axis direction of the second headrest rod, forming an upper side of the second limiting groove abutting against the upper surface of the clip-on plate.

[0015] Optionally, a guide groove is provided on the bottom surface of the mounting shell, and the locking plate is provided with a guide column, and the guide column slides along the guide groove when the locking plate is movably extended into the mounting shell.

[0016] Optionally, the mounting shell has a mounting cavity for accommodating one end of the elastic member, the locking plate has a mounting column, one end of the elastic member is sleeved on the mounting column, and the other end is inserted into the mounting cavity.

[0017] Optionally, the number of the guide sleeves is two, and the two guide sleeves include a first guide sleeve and a second guide sleeve respectively;

[0018] The number of the headrest rods is two, and the two headrest rods are respectively a first headrest rod and a second headrest rod;

[0019] The first headrest rod is inserted into the first guide sleeve, and the second headrest rod is inserted into the second guide sleeve;

[0020] The first locking assembly is partially located on the first guide sleeve and partially located on the first headrest rod;

[0021] Part of the second locking assembly is located on the second guide sleeve, and part of the second locking assembly is located on the second headrest rod.

[0022] A seat, comprising the headrest described in any one of the above items.

[0023] A vehicle comprises the above-mentioned seat.

[0024] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0025] The utility model provides a headrest, a seat and a vehicle. When the user needs to adjust the height of the headrest, the headrest can be kept in a limited position by a first locking component. When the user presses the first locking component, after the headrest rod passes through a limiting groove at the highest height position, the locking part of the second locking component will be stuck in the second limiting groove, and the headrest rod cannot continue to rise, that is, the headrest rod cannot be pulled out of the guide sleeve, thereby avoiding the problem of the user pulling off and damaging the wires of the internal electrical components when using the headrest. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of the structure of a headrest provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of the side structure of a headrest provided in an embodiment of the present application;

[0029] Figure 3 A schematic diagram of the structure of a headrest assembly and a headrest rod in a headrest frame in a headrest provided in an embodiment of the present application;

[0030] Figure 4 A schematic diagram of the structure of the headrest provided in the embodiment of the present application in the highest position;

[0031] Figure 5 A schematic diagram of the structure of the headrest provided in an embodiment of the present application in the lowest position;

[0032] Figure 6 A schematic diagram of the structure of a first guide sleeve in a headrest provided in an embodiment of the present application;

[0033] Figure 7 An exploded view of a headrest locking assembly provided in an embodiment of the present application;

[0034] Figure 8 A schematic diagram of the guide assembly structure of the headrest provided in this example;

[0035] Fig. 9 A schematic diagram of the structure of the second guide sleeve of the headrest provided in this example;

[0036] Fig.10 A schematic diagram of the limiting groove provided in an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 100, guide sleeve; 110, first guide sleeve; 120, second guide sleeve;

[0039] 200, headrest rod; 210, first headrest rod; 220, second headrest rod;

[0040] 300, first locking assembly; 310, first locking portion; 320, first limiting groove;

[0041] 400, second locking assembly; 410, second locking portion; 411, locking plate; 4111, guide column; 4112, mounting column; 4113, through hole; 4114, clamping plate; 412, elastic member; 420, second limiting groove; 4201, horizontal portion; 4202, inclined portion;

[0042] 111, mounting shell; 1111, insertion port; 1112, notch; 1113, guide groove; 1114, mounting cavity;

[0043] 112. Decorative cover;

[0044] 500, headrest assembly; 501, headrest frame; 600, backrest assembly; DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] like Figure 1-Figure 10 As shown, the embodiment of the present application provides an adjustable headrest, see Figure 1-Figure 2 As shown, the headrest includes a headrest assembly 500 and a headrest frame 501, wherein one end of the headrest frame 501 is connected to the headrest assembly 500, and one end of the headrest frame 501 is connected to the backrest assembly 600, and the headrest frame 501 can be used to realize the adjustable setting of the headrest assembly 500 on the backrest assembly 600.

[0047] See 2- Figure 4 As shown, the headrest frame 501 may include a guide sleeve 100, a headrest rod 200, a first locking assembly 300 and a second locking assembly 400. The headrest rod 200 is inserted into the guide sleeve 100 and can move up and down along the guide sleeve 100. The first locking assembly 300 is used to keep the headrest rod 200 in a limited position when moving up and down. Figure 4As shown, the second locking assembly 400 is used to prevent the headrest rod 200 from escaping from the guide sleeve 100 when the headrest rod 200 moves upward to the highest position. Figure 5 The headrest rod 200 moves to the lowest position in the guide sleeve 100. At this time, the second locking assembly 400 is in an unlocked state for the headrest rod 200. The headrest rod 200 can be moved from Figure 5 Move the position shown to Figure 4 When in the position shown, the second locking assembly 400 locks the headrest rod 200, and the headrest rod 200 cannot move further upward.

[0048] Specifically, a seat is generally composed of a headrest, a backrest assembly and a seat cushion. The outside of the seat is covered with foam and the inside is supported by a frame. The guide sleeve 100 of the headrest is a hollow tubular structure connected to the backrest assembly. The diameter of the headrest rod 200 is smaller than the inner diameter of the guide sleeve 100, so that the headrest rod 200 can be inserted into the interior of the guide sleeve 100, and there is a gap between the two to ensure that they can slide freely up and down.

[0049] Among them, see Figure 4 As shown, two guide sleeves 100 are arranged along the width direction of the seat back, including a first guide sleeve 110 and a second guide sleeve 120, and the corresponding two headrest rods include a first headrest rod 210 and a second headrest rod 220. When the user needs to adjust the height of the headrest, he only needs to pull up the headrest. When the headrest rod 200 moves to a limited position, the first locking assembly 300 is automatically in a locked state to lock the first headrest rod 210, and the headrest cannot move downward. If the user pulls the headrest up to the highest position and continues to pull it up, the second locking assembly 400 locks the second headrest rod 220. At this time, the headrest rod 200 cannot be pulled out of the guide sleeve 100. After unlocking the first locking assembly 300, the headrest can move downward. In this way, the height of the headrest can be adjusted. Due to the action of the second locking assembly 400, even if the first locking assembly 300 is unlocked, the headrest rod can only move downward, but cannot move upward and cannot escape from the guide sleeve, thereby avoiding the problem of the user pulling off and damaging the wires of the internal electrical components when using the headrest.

[0050] In another optional embodiment, the first locking assembly 300 and the second locking assembly 400 can both be used to lock on one headrest rod, and can both lock the first headrest rod 210 or the second headrest rod 220. The second locking assembly 400 is arranged below the first locking assembly 300. When the headrest rod is pulled up to the highest position and then continued to be pulled up, the second locking assembly 400 is locked and the headrest rod cannot be pulled out. When the user needs to adjust the height of the headrest downward, the first locking assembly 300 is unlocked and the headrest rod can move downward.

[0051] Furthermore, the first locking assembly 300 includes a first locking portion 310 and a first limiting groove 320. The first locking portion 310 is arranged at the top end of the guide sleeve 100. The first headrest rod 210 has a first limiting groove 320 along the height direction. The first locking portion 310 and the first limiting groove 320 form an unlocked or locked state.

[0052] The second locking assembly 400 includes a second locking portion 410 and a second limiting groove 420. The position of the second limiting groove 420 is not higher than the position of the first limiting groove 320 that sets the height of the headrest to the highest position. The second locking portion 410 is located at the top end of the guide sleeve 100 and forms an unlocked or locked state with the second limiting groove 420.

[0053] Specifically, the bottom of the first guide sleeve 110 is connected to the backrest assembly 600 and extends to the inside of the seat, and the first locking portion 310 is arranged at the position where the first headrest rod 210 penetrates at the top, and the first limiting groove 320 is arranged along the height direction of the first headrest rod 210. The first limiting groove 320 can be one or more, and can be arranged at equal distances or unequal distances. For example, four first limiting grooves 320 can be arranged in this embodiment, which are the first position, the second position, the third position, and the fourth position from top to bottom. When the first locking portion 310 is locked with the first position, the headrest rod 200 is in the initial position at this time, and the headrest is pulled upward. When the first headrest rod 210 moves to the second position, the first locking portion 310 automatically locks with the second position, and the headrest cannot move downward at this time. When the headrest is continuously pulled upward, the first locking portion 310 is sequentially locked with the third position and the fourth position, and the fourth position is the highest position of the headrest. If the user needs to lower the headrest, unlock the first locking portion, and the headrest can move downward, and move from the fourth position to the first position in sequence.

[0054] Similarly, a second locking portion 410 is provided at the top of the second guide sleeve 120, and a second limiting groove 420 is provided along the height direction of the second headrest rod 220. One second limiting groove 420 can be provided, and the position of the second limiting groove 420 can be the same as the fourth position of the first limiting groove 320. At this time, when the first headrest rod 210 moves upward to the fourth position, the second locking portion 410 automatically locks with the second limiting groove 420, and the headrest cannot continue to move upward. Of course, the position of the second limiting groove 420 of this embodiment can also be lower than the fourth position of the first limiting groove 320. When the first headrest rod 210 moves to the fourth position and continues to move upward for a distance, the second locking portion 410 automatically locks with the second limiting groove 420.

[0055] Furthermore, a mounting shell 111 is also provided at the top of the guide sleeve 100 (for example, the first guide sleeve 110), and an insertion port 1111 for the headrest rod 200 to pass through is provided on the top and bottom surfaces of the mounting shell 111, and a notch 1112 is provided on the side of the mounting shell 111; the second locking portion 410 includes a locking plate 411 and an elastic member 412, and a through hole 4113 adapted to the insertion port 1111 is provided in the middle of the locking plate 411, and a snap-in plate 4114 that forms a locking state with the second limiting groove 420 is provided in the through hole 4113, and the locking plate 4111 and the elastic member 412 are movably extended into the cavity of the mounting shell 111 through the notch 1112 of the mounting shell 111 so that: when the elastic member 412 is in an extended state, the snap-in plate 4114 is locked with the second limiting groove 420, and when the elastic member 412 is in a compressed state, the snap-in plate 4114 is disengaged from the second limiting groove 420.

[0056] Specifically, a mounting shell 111 is provided on the top of the guide sleeve 100. The mounting shell 111 is an extension of the guide sleeve 100 and is a hollow cavity structure. The top and bottom surfaces of the mounting shell 111 are provided with insertion openings 1111 through which the headrest rod 200 can pass. A notch 1112 is provided on the side of the mounting shell 111. During installation, the locking piece 411 and the elastic member 412 are connected and inserted into the mounting shell 111 through the notch 1112. A through hole 4113 is provided in the middle of the locking piece 411, and the through hole 4113 is adapted to the insertion opening 1111 of the mounting shell 111, that is, the second When the headrest rod 220 is assembled with the second guide sleeve 120, it passes through the insertion port 1111 and the through hole 4113 and extends into the second guide sleeve 120. Since a clamping plate 4114 is provided at the end of the through hole 4113, under the action of the elastic member 412, the clamping plate 4114 maintains abutment with the second headrest rod 220, and moves to the second limiting groove 420 during the upward movement of the second headrest rod 220. The clamping plate 4114 automatically engages with the second limiting groove 420 under the action of the elastic member 412. At this time, the second headrest rod 220 cannot continue to move upward.

[0057] Furthermore, the headrest further includes a decorative cover 112 , which is connected to the mounting shell 111 , and the operating portion of the locking piece 411 is accommodated inside the decorative cover 112 .

[0058] Specifically, a decorative cover 112 is further provided above the mounting shell 111. The decorative cover 112 has an opening through which the headrest rod 200 can pass, and is connected to the bottom of the mounting shell 111. The connection method may be a snap connection, a screw connection, etc. At this time, the operating portion of the locking piece 411 is accommodated inside the decorative cover 112, and the user cannot press the operation, thereby better preventing the user from accidentally pulling out the headrest rod.

[0059] In another embodiment, an opening may be provided on the side of the decorative cover 112 , and the opening may be used for a special tool to press the operating portion of the locking piece 411 , and may also prevent the user from pulling out the headrest rod by mistake.

[0060] It should be noted that see Fig. 9 As shown, the first guide sleeve 110 has the same structure as the second guide sleeve 120, so the structure of the second guide sleeve 120 can refer to the above Figure 7 and Figure 8 The structure of the present invention will not be described in detail in the embodiments of the present application.

[0061] For further information, see Fig.10 As shown, the second limiting groove 420 includes a horizontal portion 4201 and an inclined portion 4202. The horizontal portion 4201 forms the lower side of the second limiting groove 420 that abuts against the lower surface of the clamping plate 4114. The inclined portion 4202 is connected to the horizontal portion 4201 and is inclined to the upper right along the axis of the second headrest rod 220, forming the upper side of the second limiting groove 420 that abuts against the upper surface of the clamping plate 4114.

[0062] Specifically, Fig.10 As shown, the second limiting groove 420 is a recessed structure. When the second headrest rod 220 moves upward, the snap-in plate 4114 is snapped into the second limiting groove 420, that is, the lower surface of the snap-in plate 4114 abuts against the horizontal portion 4201 of the second limiting groove 420. At this time, the lower surface of the snap-in plate 4114 blocks the second headrest rod 220 from moving upward. Since the upper side of the second limiting groove 420 is the inclined portion 4202, when the height of the headrest needs to be lowered, the headrest is pressed downward, and the inclined portion 4202 squeezes the upper surface of the snap-in plate 4114, thereby pushing the elastic member 412 to compress, so that the snap-in plate 4114 is disengaged from the second limiting groove 420, thereby realizing the downward movement of the headrest. The limiting structure of this embodiment can prevent the headrest from being pulled out, but it is also convenient for the user to lower the height of the headrest.

[0063] Furthermore, a guide groove 1113 is provided on the bottom surface of the installation shell 111 , and a guide column 4111 is provided on the bottom surface of the locking piece 411 . The guide column 4111 slides along the guide groove 1113 when the locking piece 411 movably extends into the installation shell 111 and moves.

[0064] Specifically, Figure 8 As shown, the guide groove 1113 on the bottom surface of the mounting shell 111 is a through opening, which may be one or two. The opening extends along the moving direction of the locking plate 411. The locking plate 411 has a protruding guide column 4111 adapted thereto. At this time, the locking plate 411 reciprocates along the guide groove 1113 under the action of the elastic member 412, thereby ensuring the stable movement of the locking plate and limiting the excessive extension of the elastic member to withdraw from the mounting shell.

[0065] Furthermore, the mounting shell 111 has a mounting cavity 1114 for accommodating one end of the elastic member 412 , and the locking plate 411 has a mounting post 4112 . One end of the elastic member 412 is sleeved on the mounting post 4112 , and the other end is inserted into the mounting cavity 1114 .

[0066] Specifically, the elastic member 412 in the present embodiment can be a coil spring, one end of the coil spring can be sleeved on the mounting column 4112, and the other end extends into the mounting cavity 1114. The mounting cavity 1114 can be the same length as the mounting shell 111, that is, the mounting column 4112 and the coil spring can be completely accommodated in the mounting cavity 1114. The mounting cavity 1114 can also be shorter than the length of the mounting shell 111, that is, the coil spring is partially accommodated in the mounting cavity 1114. The mounting structure provided in the present embodiment can make the spring firmly connected to avoid failure.

[0067] In addition, one embodiment is a seat, which includes any of the headrests described above. The headrest not only satisfies the user's need to adjust the height, but also implements the wiring arrangement of electrical equipment in the headrest, thereby avoiding damage to the wires by pulling out the headrest rod.

[0068] In addition, an embodiment is a vehicle, comprising the aforementioned seat, which further improves the comfort of the vehicle.

[0069] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0070] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0071] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0072] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0073] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0074] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A headrest, characterized in that: The headrest frame comprises a headrest assembly and a headrest frame, wherein one end of the headrest frame is connected to the headrest assembly and the other end is used to connect to the backrest assembly, the headrest frame comprises a guide sleeve, a headrest rod, a first locking assembly and a second locking assembly, and the headrest rod is inserted into the guide sleeve and can move up and down along the guide sleeve; The first locking assembly is used to keep the headrest rod in a limited position when it moves up and down; The second locking assembly is used for limiting the headrest rod from coming out of the guide sleeve when the headrest rod moves upward to the highest position.

2. The headrest according to claim 1, characterized in that: The first locking assembly includes a first locking portion and a first limiting groove, the first locking portion is arranged at the top end of the guide sleeve, the headrest rod is provided with the first limiting groove along the height direction, and the first locking portion and the first limiting groove form an unlocked or locked state; The second locking assembly includes a second locking portion and a second limiting groove, the position of the second limiting groove is not higher than the position of the first limiting groove that sets the height of the headrest to the highest position, and the second locking portion is located at the top end of the guide sleeve and forms an unlocked or locked state with the second limiting groove.

3. The headrest according to claim 2, characterized in that: A mounting shell is also provided at the top of the guide sleeve, and an insertion opening for the headrest rod to pass through is provided on the top and bottom surfaces of the mounting shell, and a notch is provided on the side of the mounting shell; The second locking portion includes a locking plate and an elastic member, a through hole matching the insertion port is provided in the middle of the locking plate, and a clamping plate is provided in the through hole; The locking plate and the elastic member are movably extended into the cavity of the mounting shell through the notch so that: when the elastic member is in an extended state, the clamping plate is locked with the second limiting groove, and when the elastic member is in a compressed state, the clamping plate is disengaged from the second limiting groove.

4. The headrest according to claim 3, characterized in that: The headrest further comprises a decorative cover, the decorative cover is connected to the mounting shell, and the operating portion of the locking piece is accommodated inside the decorative cover.

5. The headrest according to claim 3, characterized in that: The second limiting groove includes a horizontal portion and an inclined portion, the horizontal portion forming the lower side of the second limiting groove abutting against the lower surface of the clamping plate, the inclined portion is connected to the horizontal portion and inclined to the upper right along the axis direction of the second headrest rod, forming the upper side of the second limiting groove abutting against the upper surface of the clamping plate.

6. The headrest according to any one of claims 3 to 5, characterized in that: The bottom surface of the installation shell is provided with a guide groove, and the locking piece is provided with a guide column. When the locking piece is movably extended into the installation shell, the guide column slides along the guide groove.

7. The headrest according to any one of claims 3 to 5, characterized in that: The mounting shell has a mounting cavity for accommodating one end of the elastic member, the locking plate has a mounting column, one end of the elastic member is sleeved on the mounting column, and the other end is inserted into the mounting cavity.

8. The headrest according to any one of claims 3 to 5, characterized in that: The number of the guide sleeves is two, and the two guide sleeves respectively include a first guide sleeve and a second guide sleeve; The number of the headrest rods is two, and the two headrest rods are respectively a first headrest rod and a second headrest rod; The first headrest rod is inserted into the first guide sleeve, and the second headrest rod is inserted into the second guide sleeve; The first locking assembly is partially located on the first guide sleeve and partially located on the first headrest rod; Part of the second locking assembly is arranged on the second guide sleeve, and part of the second locking assembly is located on the second headrest rod.

9. A seat, characterized in that: The seat comprises a headrest as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: The vehicle comprises the seat of claim 9.

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