Vehicle seat headrest, control method of vehicle seat headrest, and vehicle

Abstract

The application discloses a vehicle seat headrest, a control method of the vehicle seat headrest and a vehicle. The vehicle seat headrest comprises a headrest frame, the headrest frame having a headrest profile; a plurality of profile adjusting assemblies movably arranged in the headrest frame; a reset assembly arranged on one side of the plurality of profile adjusting assemblies and selectively abutting against the plurality of profile adjusting assemblies; and a locking assembly arranged in the headrest frame, the locking assembly comprising a first limiting plate, a plurality of clamping pieces and a second limiting plate, one end of the clamping pieces away from the first limiting plate being selectively limited and matched with the profile adjusting assembly. The adjustable assembly is arranged, so that the headrest profile is formed to fit the head of the passenger, the contact area of the head and the headrest is increased, and no matter what the head shape or hair style of the passenger is, the corresponding comfortable position can be found by adjusting the profile adjusting assembly, so that the safety of the passenger is improved, and the comfort of the head is improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle seat headrest technology, and in particular to a vehicle seat headrest, a vehicle seat headrest control method, and a vehicle. Background Technology

[0002] Seat headrests have become a mandatory national standard, requiring all vehicle models to have headrests installed in both the front and rear seats. Strict regulations govern the material, strength, energy absorption, position, and size of these headrests. In a rear-end collision, the occupant's head is thrown backward instantly. Seat headrests effectively mitigate the impact of the collision, preventing neck injuries caused by excessive head tilting backward. Traditional headrests, while a safety feature, often neglect user comfort, resulting in poor comfort. Furthermore, varying head shapes and hairstyles among occupants can lead to inconsistent head positioning and discomfort with the headrest.

[0003] In order to solve this problem, various neck pillows and aftermarket soft pillows have emerged in related technologies. Although they have increased comfort to a certain extent, both neck pillows and soft pillows have increased the distance between the head and the real headrest, which undoubtedly increases the risk of neck injury in the event of a collision. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a vehicle seat headrest, which improves the headrest support area and comfort by setting an adjustable headrest structure, thereby improving the shape of the headrest surface through head compression.

[0005] The present invention also proposes a method for controlling vehicle seat headrests.

[0006] The present invention also proposes a vehicle.

[0007] According to a first aspect of the present invention, a vehicle seat headrest includes: a headrest frame having a headrest profile; a plurality of profile adjustment components movably disposed within the headrest frame; a reset component disposed on one side of the plurality of profile adjustment components and selectively abutting against the plurality of profile adjustment components; and a locking component disposed within the headrest frame, the locking component including: a first limiting plate, a plurality of snap-fit ​​members, and a second limiting plate, wherein the profile adjustment components pass through the first limiting plate, the plurality of snap-fit ​​members are disposed on one side of the first limiting plate, one end of each snap-fit ​​member opposite to the first limiting plate selectively engages with the profile adjustment component, the second limiting plate is disposed on one side of the first limiting plate, the second limiting plate has a plurality of limiting holes, the plurality of profile adjustment components and the plurality of limiting holes correspond one-to-one, and the ends of the snap-fit ​​members selectively engage within the limiting holes.

[0008] According to an embodiment of the present invention, the vehicle seat headrest, by providing an adjustable component structure, forms a headrest profile that conforms to the occupant's head, increasing the contact area between the head and the headrest. Regardless of the occupant's head shape or hairstyle, the occupant can find a comfortable position by adjusting the profile adjustment component, which not only improves the safety of the occupant but also enhances head comfort.

[0009] According to some embodiments of the present invention, the second limiting plate has an unlocked position and a locked position. When the second limiting plate is in the unlocked position, the end of the latching member is disposed outside the limiting hole. When the second limiting plate is in the locked position, the end of the latching member is disposed inside the limiting hole.

[0010] According to some embodiments of the present invention, the profile adjustment assembly includes: a profile component and a mating component, one end of the mating component is fixedly connected to the profile component, the end of the snap-fit ​​component opposite to the first limiting plate is provided with a snap-fit ​​portion, and the other end of the mating component and the snap-fit ​​portion are selectively limited and mated.

[0011] According to some embodiments of the present invention, the snap-fit ​​portion is a snap hook, and the mating member is provided with a plurality of snap protrusions spaced apart in the axial direction of the profile adjustment assembly, wherein the snap hook and the snap protrusions selectively engage.

[0012] According to some embodiments of the present invention, there are at least two hooks, and the at least two hooks are disposed on both sides of the profile adjustment component. The profile adjustment component is provided with at least two protrusions in the radial direction, and the hooks and protrusions correspond one-to-one.

[0013] According to some embodiments of the present invention, the mating member further includes: a first limiting portion and a second limiting portion, wherein the first limiting portion is disposed at the other end of the mating member, and the second limiting portion is disposed at the end of the mating member opposite to the first limiting portion, and the snap-fit ​​portion selectively engages with the first limiting portion or the second limiting portion.

[0014] According to some embodiments of the present invention, the locking assembly further includes: a first driving member disposed below the second limiting plate, the first driving member driving the second limiting plate to move; and / or, the reset assembly includes: a reset plate and a second driving member disposed below the reset assembly, the second driving member selectively driving the reset assembly and the profile adjustment assembly to abut against each other.

[0015] According to a second aspect embodiment of the present invention, the control method for a vehicle seat headrest includes the following steps: adjusting the reset assembly to an initial position; adjusting the second limiting plate to an unlocked position; the profile adjustment assembly under pressure moving rearward until it can no longer move, with the end of the latching member engaging with the profile adjustment assembly; adjusting the second limiting plate to a locked position, with the latching member and the profile adjustment assembly engaging in a limiting engagement.

[0016] According to some embodiments of the present invention, the step of adjusting the reset component to the initial position and adjusting the second limiting plate to the unlocked position further includes: adjusting the reset component to move towards the profile adjustment component, the profile adjustment component moving towards the headrest profile direction under the pressure of the reset component until it returns to the initial state, and the reset component returning to the initial position; adjusting the second limiting plate to the locking position, and the snap-fit ​​member and the profile adjustment component engaging in a limiting fit.

[0017] A vehicle according to a third aspect of the present invention includes: the vehicle seat headrest.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a structural schematic diagram of a vehicle seat headrest according to an embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional view of a vehicle seat headrest according to an embodiment of the present invention;

[0022] Figure 3 yes Figure 2 A partial schematic diagram;

[0023] Figure 4 This is a cross-sectional view of a vehicle seat headrest according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the second limiting plate of the vehicle seat headrest in the locked position according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the second limiting plate of the vehicle seat headrest in the unlocked position according to an embodiment of the present invention;

[0026] Figure 7 This is a structural schematic diagram of a vehicle seat headrest in state one according to an embodiment of the present invention;

[0027] Figure 8 This is a structural schematic diagram of a vehicle seat headrest in state two according to an embodiment of the present invention;

[0028] Figure 9 This is a structural schematic diagram of a vehicle seat headrest in state three according to an embodiment of the present invention;

[0029] Figure 10 This is a structural schematic diagram of a vehicle seat headrest in state four according to an embodiment of the present invention;

[0030] Figure 11 This is a schematic diagram illustrating the interaction between the head and the shape adjustment assembly according to an embodiment of the present invention.

[0031] Figure label:

[0032] 100. Vehicle seat headrests;

[0033] 1. Headrest frame; 2. Profile component; 3. Mating component; 31. Snap-fit ​​protrusion; 32. First limiting part; 33. Second limiting part; 4. First limiting plate; 5. Snap-fit ​​component; 51. Snap-fit ​​part; 6. Second limiting plate; 7. Reset plate; 8. First driving component; 9. Slide rail; 10. Second driving component; 11. Profile adjustment assembly. Detailed Implementation

[0034] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0035] The following is for reference. Figures 1-11 The present invention describes a vehicle seat headrest 100 according to an embodiment of the present invention, and also provides a control method for having the vehicle seat headrest 100, and a vehicle having the vehicle seat headrest 100.

[0036] Combination Figures 1-10 As shown, the vehicle seat headrest 100 of this embodiment includes: a headrest frame 1, a plurality of surface adjustment components 11, a reset component and a locking component. The headrest frame 1 has a headrest surface. The plurality of surface adjustment components 11 are movably disposed within the headrest frame 1. The reset component is disposed on one side of the plurality of surface adjustment components 11 and selectively abuts against the plurality of surface adjustment components 11. The locking component is disposed within the headrest frame 1.

[0037] Specifically, under normal circumstances, the vehicle seat headrest 100 can effectively alleviate the huge impact force on the occupant's head during a safety accident. By setting the second limiting plate 6, the surface adjustment component 11 can be prevented from moving excessively inward during a collision and failing to support the occupant's head, thereby preventing neck injury caused by excessive head tilting.

[0038] Specifically, the headrest frame 1 is covered with a skin, which looks the same as a regular headrest. Adjustments to the internal structure do not affect the overall appearance of the headrest frame 1. The headrest surface refers to the surface of the skin that contacts the occupant's head.

[0039] The shape adjustment component 11 forms an adjustable shape through one end face. In use, the occupant's head is placed against the headrest shape. When pressed by the force of the head, the shape adjustment component 11 will move inward to a certain extent. The distance of inward movement varies depending on the area in contact with the head. For example, the back of the head is generally arc-shaped. The center of the back of the head will cause the corresponding shape adjustment component 11 to move inward a larger distance, while the edge area of ​​the back of the head will cause the corresponding shape adjustment component 11 to move inward a smaller distance. This achieves a close fit between the head and the shape adjustment component 11. The locking component locks the shape adjustment component 11 in this state, so that the end of the shape adjustment component 11 forms a shape that is approximately the same as the shape of the head.

[0040] Specifically, the locking assembly includes: a first limiting plate 4, multiple snap-fit ​​pieces 5, and a second limiting plate 6. The profile adjustment assembly 11 passes through the first limiting plate 4. The multiple snap-fit ​​pieces 5 are disposed on one side of the first limiting plate 4, and the end of the snap-fit ​​piece 5 facing away from the first limiting plate 4 selectively engages with the profile adjustment assembly 11. The second limiting plate 6 is disposed on one side of the first limiting plate 4 and has multiple limiting holes. The multiple profile adjustment assemblies 11 correspond one-to-one with the multiple limiting holes, and the end of the snap-fit ​​piece 5 selectively engages within the limiting hole. That is, the snap-fit ​​piece 5 selectively engages with the end of the profile adjustment assembly 11. Specifically, when the second limiting plate 6 and the snap-fit ​​piece 5 engage, i.e., when the snap-fit ​​piece 5 engages within the limiting hole, the snap-fit ​​piece 5 is limited by the second limiting plate 6. At this time, the snap-fit ​​piece 5 is locked onto the profile adjustment assembly 11, thus preventing the profile adjustment assembly 11 from moving forward or backward. Furthermore, when the second limiting plate 6 does not engage with the snap-fit ​​member 5, that is, when the snap-fit ​​member 5 is not engaged within the limiting hole, the snap-fit ​​member 5 is in a free state, that is, the profile adjustment assembly 11 can move forward or backward.

[0041] The head shape of the occupants includes at least flat head and round head, and some occupants are female, who may have a bun, ponytail, or updo with a local protrusion on their head. By adjusting the shape adjustment component 11, a comfortable shape can be found so that the headrest shape can fit the occupant's head, improving support and comfort.

[0042] Therefore, by setting the structure of the adjustable components, a headrest shape that fits the occupant's head is formed, increasing the contact area between the head and the headrest. Regardless of the occupant's head shape or hairstyle, they can find a comfortable position by adjusting the shape adjustment components 11, which not only improves the safety of the occupant but also enhances the comfort of the head.

[0043] Among them, combined Figure 5 and Figure 6 As shown, the second limiting plate 6 has an unlocked position and a locked position. When the second limiting plate 6 is in the unlocked position, the end of the latching member 5 is positioned outside the limiting hole. When the second limiting plate 6 is in the locked position, the end of the latching member 5 is positioned inside the limiting hole. (Refer to...) Figure 6As shown, when the second limiting plate 6 is in the unlocked position, the second limiting plate 6 is away from the first limiting plate 4, that is, the second limiting plate 6 is disengaged from the profile adjustment assembly 11. At this time, the latching member 5 cannot be limited by the second limiting plate 6, so that the latching member 5 and the end of the profile adjustment assembly 11 cannot be locked. This allows the profile adjustment assembly 11 to move inward under force, or the profile adjustment assembly 11 can move outward under the abutment of the reset assembly, thereby resetting the profile adjustment assembly 11. Furthermore, when the second limiting plate 6 is in the locked position, since the latching member 5 is located inside the limiting hole, the latching member 5 is limited by the second limiting plate 6. This results in a limiting fit between the latching member 5 and the end of the profile adjustment assembly 11, thereby fixing the profile adjustment assembly 11. That is, it can maintain the state of the profile adjustment assembly 11 after it fits the head, which helps to maintain the headrest profile that matches the occupant's head and improve the comfort of the occupant's head.

[0044] Combination Figures 1-3 As shown, the profile adjustment assembly 11 includes a profile component 2 and a mating component 3. One end of the mating component 3 is fixedly connected to the profile component 2. A snap-fit ​​part 51 is provided at the end of the snap-fit ​​component 5 facing away from the first limiting plate 4. The other end of the mating component 3 selectively engages with the snap-fit ​​part 51 for limiting. Specifically, the profile component 2 is used to receive the force of the head. The head squeezes the profile component 2 and pushes the mating component 3 to move. By setting the mating component 3, the arrangement of the profile adjustment assembly 11 can be facilitated, and it is also convenient to cooperate with the locking assembly to lock and fix the profile adjustment assembly 11.

[0045] In some embodiments of the present invention, such as Figure 1 and Figure 2 As shown, multiple profiled components 2 are arranged in an array, corresponding to the central or overall area of ​​the headrest profile. Specifically, the shape of the profiled components 2 is not limited to square, circular, or rhomboid shapes, and the material can be conventional materials such as plastic, metal, or rubber. By arranging the profiled components 2 in an array, it is beneficial to divide the size of the profiled components 2, which facilitates the uniform arrangement of the profiled adjustment components 11.

[0046] Furthermore, based on the above embodiments, such as Figure 2 As shown, the profile part 2 is detachably mounted on the mating part 3. Specifically, when the profile adjustment assembly 11 is damaged, the profile part 2 and the mating part 3 can be disassembled and separated, thereby reducing maintenance costs and facilitating maintenance and repair.

[0047] Specifically, such as Figure 3As shown, the engaging part 51 is a hook, and the mating part 3 is provided with multiple protrusions 31 spaced apart in the axial direction of the profile adjustment component 11. The hook and the protrusions 31 selectively engage. That is, when the engaging part 51 is located within the limiting hole, the engaging part 51 cannot open due to the restriction of the limiting hole; that is, the hook is engaged with the protrusion 31, thereby locking the profile adjustment component 11. And when the engaging part 51 is not located within the limiting hole, the hook opens and closes with the protrusions 31 as the profile adjustment component 11 moves forward or backward.

[0048] The device includes at least two hooks, which are located on both sides of the profile adjustment component 11. The profile adjustment component 11 has at least two protrusions 31 in the radial direction, with each hook and protrusion corresponding to the other. This arrangement provides protrusions 31 on both radial sides of the mating part 3, and at least two engaging parts 5. This allows each mating part 3 to be engaged by at least two engaging parts 5, improving the limiting stability of the mating part 3 and making the engaging parts 5 more stable when engaging with the mating part 3. This reduces friction between the mating part 3 and the second limiting plate 6, extending the service life of the vehicle seat headrest 100.

[0049] And, refer to Figure 3 As shown, the mating part 3 also includes a first limiting part 32 and a second limiting part 33. The first limiting part 32 is disposed at the other end of the mating part 3, and the second limiting part 33 is disposed at the end of the mating part 3 opposite to the first limiting part 32. The engaging part 51 selectively engages with either the first limiting part 32 or the second limiting part 33. Due to the size limitations of the vehicle seat headrest 100, the profile adjustment assembly 11 cannot move forward or backward without restriction. Specifically, when the reset assembly resets the profile adjustment assembly 11, the reset assembly abuts against the profile adjustment assembly 11, causing the profile adjustment assembly 11 to move forward. If the mating part 3 does not have the first limiting part 32, the profile adjustment assembly 11 will disengage from the second limiting plate 6, affecting the next use of the vehicle seat headrest 100. Furthermore, when a user needs to adjust the shape of the vehicle seat headrest 100, the user's head will press against the shape adjustment component 11, causing the shape adjustment component 11 to move backward. Without a second limiting part 33 on the mating part 3, on the one hand, the shape adjustment component 11 will continue to move backward, causing the vehicle seat headrest 100 to become too concave, affecting the user experience; on the other hand, because the backward movement of the shape adjustment component 11 is too large, the latching protrusion 31 cannot abut against the latching part 51, thus preventing the shape adjustment component 11 from being locked when the locking component is in the locked position. Therefore, by providing a first limiting part 32 and a second limiting part 33 on the shape adjustment component 11, the movement threshold of the shape adjustment component 11 can be limited, facilitating subsequent adjustment of the vehicle seat headrest 100.

[0050] Among them, reference Figure 1 As shown, the locking assembly further includes a first driving member 8, which is disposed below the second limiting plate 6. The first driving member 8 drives the second limiting plate 6 to move. With this configuration, when the second limiting plate 6 moves between the locked position and the unlocked position, the first driving member 8 can move the second limiting plate 6 away from or closer to the first limiting plate 4, thus enabling control of the locking assembly.

[0051] And, refer to Figure 1 As shown, the reset assembly includes a reset plate 7 and a second driving member 10. The second driving member 10 is located below the reset assembly and selectively drives the reset assembly and the profile adjustment assembly 11 to abut against each other. Specifically, when the profile adjustment assembly 11 needs to be reset by the reset assembly, the second driving member 10 will drive the reset plate 7 to move towards the side closer to the headrest profile. Here, the reset plate 7 can adopt a plate-like structure, and then push the tail of the profile adjustment assembly 11 through the plate surface to restore the formed head profile to a flat shape. This structural design facilitates the realization of the reset function.

[0052] Furthermore, a slide rail 9 is provided below the reset plate 7 and the second limiting plate 6, wherein the first driving member 8 and the second driving member 10 both slide within the slide rail 9, which facilitates the movement of the reset plate 7 and the second limiting plate 6. Also, the reset plate 7 and the second limiting plate 6 share the slide rail 9, which can save on the usage cost of the vehicle seat headrest 100.

[0053] The control method for adjusting the vehicle seat headrest 100 according to an embodiment of the present invention is as follows:

[0054] First, adjust the reset component to the initial position, and then adjust the second limiting plate 6 to the unlocked position. That is, first, the second limiting plate 6 is driven to the unlocked position by the first driving component 8, at which point the second limiting plate 6 cannot lock the profile adjustment component 11.

[0055] Next, the profile adjustment component 11, under pressure, moves backward until it can no longer move, and the end of the latching member 5 engages with the profile adjustment component 11. That is, when the user leans back, pressing the vehicle seat headrest 100, the pressure on the profile adjustment component 11 causes the engaging member 3 to move backward, and the end of the latching member 5 opens and closes with the latching protrusion 31 until the engaging member 3 no longer moves, and the latching member 5 returns to the closed state near the position of the latching protrusion 31.

[0056] Finally, the second limiting plate 6 is adjusted to the locked position, and the locking member 5 and the profile adjustment assembly 11 are engaged. That is, after the vehicle seat headrest 100 is adjusted to fit the user's head, the first driving member 8 drives the second limiting plate 6 to the locked position, at which point the profile adjustment assembly 11 is locked.

[0057] Combination Figures 7-10 This invention describes a control method for resetting the vehicle seat headrest 100 according to an embodiment of the present invention.

[0058] Reference Figure 7 and Figure 8 As shown, the reset component is adjusted to the initial position, and the second limiting plate 6 is adjusted to the locked position. That is, the second limiting plate 6 is first driven to the unlocked position by the first driving member 8, at which point the second limiting plate 6 cannot lock the profile adjustment component 11.

[0059] Next, as Figure 9 As shown, the adjustment reset assembly moves toward the profile adjustment assembly 11. Under the pressure of the reset assembly, the profile adjustment assembly 11 moves toward the headrest profile until it returns to its initial state. That is, the second drive member 10 is activated, and the second drive member 10 drives the reset plate 7 to move toward the profile adjustment assembly 11. The reset plate 7 will abut against the profile adjustment assembly 11 and push the profile adjustment assembly 11 to the front. At this time, the first limiting part 32 and the locking part 51 on the profile adjustment assembly 11 abut against each other.

[0060] like Figure 10 As shown, the reset assembly returns to its initial position, the second limiting plate 6 is adjusted to the locking position, and the snap-fit ​​5 and the profile adjustment assembly 11 are locked in place. Thus, after the profile adjustment assembly 11 is reset, the second driving member 10 drives the reset assembly to its initial position, and the first driving member 8 drives the second limiting plate 6 to the locking position, at which point the profile adjustment assembly 11 is locked.

[0061] According to a third aspect of the present invention, a vehicle includes a vehicle seat headrest 100.

[0062] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0063] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0064] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle seat headrest (100), characterized in that, include: A headrest frame (1) having a headrest-shaped surface; Multiple profile adjustment components (11) are movably disposed within the headrest frame (1); A reset assembly is disposed on one side of the plurality of profile adjustment assemblies (11) and selectively abuts against the plurality of profile adjustment assemblies (11); A locking assembly is disposed within the headrest frame (1). The locking assembly includes a first limiting plate (4), multiple snap-fit ​​pieces (5), and a second limiting plate (6). The profile adjustment assembly (11) passes through the first limiting plate (4). The multiple snap-fit ​​pieces (5) are disposed on one side of the first limiting plate (4). The end of the snap-fit ​​piece (5) facing away from the first limiting plate (4) selectively engages with the profile adjustment assembly (11). The second limiting plate (6) is disposed on one side of the first limiting plate (4). The second limiting plate (6) is provided with multiple limiting holes. The multiple profile adjustment assemblies (11) and the multiple limiting holes correspond one-to-one. The end of the snap-fit ​​piece (5) selectively engages within the limiting hole.

2. The vehicle seat headrest (100) according to claim 1, characterized in that, The second limiting plate (6) has an unlocking position and a locking position. When the second limiting plate (6) is in the unlocking position, the end of the snap-fit ​​member (5) is located outside the limiting hole. When the second limiting plate (6) is in the locking position, the end of the snap-fit ​​member (5) is located inside the limiting hole.

3. The vehicle seat headrest (100) according to claim 1, characterized in that, The profile adjustment assembly (11) includes a profile component (2) and a mating component (3). One end of the mating component (3) is fixedly connected to the profile component (2). The snap-fit ​​component (5) has a snap-fit ​​part (51) at one end away from the first limiting plate (4). The other end of the mating component (3) and the snap-fit ​​part (51) are selectively limited and mated.

4. The vehicle seat headrest (100) according to claim 3, characterized in that, The snap-fit ​​part (51) is a snap hook, and the mating part (3) is provided with a plurality of snap protrusions (31) spaced apart in the axial direction of the profile adjustment component (11). The snap hook and the snap protrusions (31) selectively engage.

5. The vehicle seat headrest (100) according to claim 4, characterized in that, There are at least two hooks, and at least two hooks are disposed on both sides of the profile adjustment component (11). The profile adjustment component (11) is provided with at least two protrusions (31) in the radial direction. The hooks and protrusions (31) correspond one-to-one.

6. The vehicle seat headrest (100) according to claim 3, characterized in that, The mating part (3) further includes: a first limiting part (32) and a second limiting part (33), the first limiting part (32) is disposed at the other end of the mating part (3), and the second limiting part (33) is disposed at the end of the mating part (3) away from the first limiting part (32), and the snap-fit ​​part (51) selectively engages with the first limiting part (32) or the second limiting part (33).

7. The vehicle seat headrest (100) according to claim 1, characterized in that, The locking assembly further includes: a first driving member (8), the first driving member (8) being disposed below the second limiting plate (6), the first driving member (8) driving the second limiting plate (6) to move; and / or, The reset assembly includes a reset plate (7) and a second drive member (10), the second drive member (10) being disposed below the reset assembly, and the second drive member (10) selectively driving the reset assembly and the profile adjustment assembly (11) to abut against each other.

8. A control method for a vehicle seat headrest (100) according to any one of claims 1-7, characterized in that, The control method includes the following steps: Adjust the reset component to the initial position, and adjust the second limiting plate (6) to the unlock position; The profile adjustment assembly (11) under pressure moves backward until it can no longer move, and the end of the snap-fit ​​(5) engages with the profile adjustment assembly (11); Adjust the second limiting plate (6) to the locking position, and the snap-fit ​​member (5) and the profile adjustment component (11) are in a limiting engagement.

9. The control method for the vehicle seat headrest (100) according to claim 8, characterized in that, The step of adjusting the reset component to the initial position and adjusting the second limiting plate (6) to the unlock position further includes: Adjust the reset component to move toward the profile adjustment component (11), and the profile adjustment component (11) moves toward the headrest profile direction under the pressure of the reset component until it returns to the initial state, and the reset component returns to the initial position; Adjust the second limiting plate (6) to the locking position, and the snap-fit ​​member (5) and the profile adjustment component (11) are in a limiting engagement.

10. A vehicle, characterized in that, include: The vehicle seat headrest (100) according to any one of claims 1-7.

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