Headrest support and car seat

Abstract

The utility model discloses headrest support and car seat, this headrest support includes: base plate, its top surface is equipped with a plurality of first positioning hole along front -back direction, sliding seat, along front -back direction sliding connection in base plate, and the first positioning pin of first positioning hole can be inserted is connected with sliding seat swing, and the lifting module includes support frame, rotating rod, gear and rack, and support frame is connected in the top surface of sliding seat, and rotating rod sets up along left and right direction and is rotatably connected in support frame, and the middle part rigid connection of rotating rod has gear, and the top of rack is connected with headrest pad, and rack and gear keep engagement, and the end part rigid connection of rotating rod has disc, and the outer wall surface of disc is equipped with a plurality of second positioning hole, and support frame swing is connected with the second positioning pin of second positioning hole can be inserted. The utility model can adjust the front -back position and left and right position of headrest pad, and through locking structure ensures that headrest pad can keep stable in any adjustment position, and reliable support is provided for head and neck continuously.

Description

Technical Field

[0001] This utility model relates to the technical field of automobile manufacturing, and in particular to headrest brackets and automobile seats. Background Technology

[0002] In the automotive consumer market, ride comfort has become a key indicator of vehicle quality. Due to significant differences in human physiology, drivers and passengers of different heights and builds have varying needs regarding the height and angle of headrests. Taller drivers and passengers using fixed-height headrests often find it difficult to obtain effective support for the back of their necks, leading to neck muscle fatigue during prolonged driving. Conversely, shorter drivers and passengers often have a larger gap between their heads and the fixed headrest, causing their heads to wobble during driving due to lack of support, similarly reducing ride comfort. At the same time, socio-economic development has led to an increasing demand for long-distance travel, making comfortable headrest support crucial for alleviating neck and shoulder fatigue during long journeys.

[0003] Adjustable headrest supports consist of a mechanical transmission structure, a fixed support structure, and an adjustment control structure. They meet the ever-increasing demands for driving comfort and safety. In traffic accidents, the safety of car headrests is crucial. In rear-end collisions, an improperly positioned headrest can easily lead to neck injuries for occupants. Existing headrest supports can work in conjunction with the vehicle's intelligent safety system; when a collision is detected, the headrest automatically adjusts to the optimal position, providing early protection for occupants. However, occupants of different heights and builds have varying needs regarding the height and angle of car headrests. Traditional headrests can result in inadequate neck and head support during long journeys, easily leading to fatigue and discomfort. Utility Model Content

[0004] The present invention aims to provide a headrest support to improve the passenger's riding experience.

[0005] According to a first aspect embodiment of the present invention, a headrest support includes:

[0006] The substrate has a plurality of first positioning holes on its top surface along the front-back direction;

[0007] A sliding seat is slidably connected to the top surface of the substrate in the front-back direction via a sliding structure. The sliding seat is movably connected to a first positioning pin, and a plurality of first positioning holes are located on the movement path of the first positioning pin. The relative position between the sliding seat and the substrate is defined by the first positioning pin and the first positioning holes.

[0008] The lifting module includes a support frame, a rotating rod, a gear, and a rack. The support frame is connected to the top surface of the sliding seat. The rotating rod is arranged in the left-right direction and rotatably connected to the support frame. The gear is rigidly connected to the middle of the rotating rod. The rack is arranged in the up-down direction, and a headrest pad is connected to the top of the rack. The rack and the gear are engaged. A disc is rigidly connected to the end of the rotating rod. The outer wall of the disc is provided with multiple second positioning holes. The support frame is movably connected to a second positioning pin. Each of the multiple second positioning holes has a movement path corresponding to the second positioning pin.

[0009] The headrest bracket according to the embodiment of this utility model has at least the following beneficial effects: pushing the sliding seat can adjust the front and rear position of the headrest cushion relative to the base plate. When needed, the front and rear position of the headrest cushion can be locked by the cooperation of the first positioning pin and the first positioning hole. Rotating the rotating rod can adjust the up and down position of the headrest cushion relative to the base plate. When needed, the up and down position of the headrest cushion can be locked by the cooperation of the second positioning pin and the second positioning hole. This is to adapt to people of different body types and different sitting habits, as well as various car models and usage scenarios. At the same time, it will not easily shake or shift during vehicle operation, ensuring that the headrest cushion remains stable in any adjustment position and continuously provides reliable support for the head and neck.

[0010] According to some embodiments of the present invention, a mounting plate is provided below the substrate, and the substrate and the mounting plate are connected by a detachable structure.

[0011] According to some embodiments of the present invention, the detachable structure includes a locking groove disposed on the vertical surface of the substrate and a slot buckle rotatably connected to the vertical surface of the mounting plate. When the substrate is connected to the mounting plate, the locking groove is located on the moving path of the slot buckle.

[0012] According to some embodiments of the present invention, the bottom surface of the substrate is provided with a plurality of third positioning pins, and the top surface of the mounting plate is provided with a plurality of third positioning holes corresponding to the third positioning pins.

[0013] According to some embodiments of the present invention, the sliding structure includes a groove disposed on the top surface of the substrate and a slider disposed on the bottom surface of the sliding seat, the slider sliding along the direction of the groove.

[0014] According to some embodiments of the present invention, all the first positioning holes are divided into two groups of parallel holes, and the two groups of parallel holes are respectively arranged on the left and right sides of the substrate, and each of the left and right sides of the sliding seat is provided with a first positioning pin.

[0015] According to some embodiments of the present invention, the two first positioning pins are connected together to a push handle.

[0016] According to some embodiments of the present invention, the rotating rod has an extension extending out of the support frame, and the extension is rigidly connected to a handle.

[0017] According to some embodiments of this utility model, the top surface of the sliding seat is connected to a plurality of guide rods, and the headrest cushion and the sliding seat are guided to move through the guide rods.

[0018] According to a second aspect of the present invention, a car seat includes:

[0019] The aforementioned headrest support;

[0020] The seat body, the top of which is connected to the headrest bracket.

[0021] Additional aspects and advantages of this 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

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a three-dimensional structural diagram of the headrest support provided in an embodiment of the present utility model;

[0024] Figure 2 yes Figure 1 The front view of the headrest support shown;

[0025] Figure 3 yes Figure 1 The rear view of the headrest support shown;

[0026] Figure 4 This is a three-dimensional structural diagram of the headrest support provided in this embodiment of the utility model after the headrest cushion is hidden;

[0027] Figure 5 This is a three-dimensional structural diagram of the rotating rod and its related structures provided in an embodiment of the present utility model;

[0028] Figure 6 This is a three-dimensional exploded view of the headrest support provided in this embodiment of the utility model after the headrest pad and lifting module are hidden.

[0029] In the attached diagram: 1-Base plate, 4-Sliding seat, 13-Headrest pad, 202-Mounting plate, 204-Mounting groove, 205-Gate buckle, 206-Handle, 201-Third positioning pin, 203-Third positioning hole, 207-Slide groove, 208-Slider, 209-Ring buckle, 5-First positioning pin, 3-First positioning hole, 21-First limiting sleeve, 18-Push handle, 19-Grip part, 20-Anti-slip sleeve, 7-Rotating rod, 11-Gear, 12-Rack, 6-Support block, 14-Guide rod, 25-Protective sleeve, 17-Rotating handle, 8-Disc, 9-Second positioning hole, 10-Second positioning pin, 15-Second limiting sleeve, 16-Soft pad, 23-Adaptive pad, 26-Protective pad, 22-Nameplate, 24-Identification plate. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used to distinguish technical features, they are not to be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] like Figure 1 and Figure 6As shown, the headrest bracket according to the first aspect of this utility model includes a base plate 1, a sliding seat 4, a lifting module, and a headrest cushion 13. The base plate 1 is detachably connected to the top surface of the mounting plate 202. The mounting plate 202 serves as the topmost structure of the car seat and moves synchronously with the car seat. When the user adjusts the overall position of the car seat forward or backward, or rotates the angle of the car seat backrest, the position of the mounting plate 202 will also be adjusted.

[0035] To enable a detachable connection between the base plate 1 and the mounting plate 202 for cleaning, maintenance, or replacement of the headrest bracket, the aforementioned detachable structure includes a locking groove 204 on the front surface of the base plate 1 and a latch 205 rotatably connected to the front surface of the mounting plate 202. With the driver's side window positioned in front of the car seat and the roof positioned above it, the locking groove 204 is located in the middle of the rear surface of the base plate 1, and the latch 205 is located in the middle of the rear surface of the mounting plate 202. The latch 205 can rotate to protrude upwards from the mounting plate 202.

[0036] After the substrate 1 is aligned with the mounting plate 202, the engaging groove 204 is located on the moving path of the latch 205. Before installation, the latch 205 needs to be rotated to avoid the engaging groove 204. Then, the substrate 1 is aligned with the mounting plate 202. After alignment, the latch 205 is reset to engage in the engaging groove 204 of the substrate 1, thus achieving the installation of the substrate 1 and the mounting plate 202. For disassembly, the latch 205 is first rotated to move away from the engaging groove 204 of the substrate 1, and then the substrate 1 is directly removed from the mounting plate 202.

[0037] Furthermore, to facilitate applying force to the buckle 205, a handle 206 is connected to the buckle 205 outside the engagement groove 204. When it is necessary to rotate the buckle 205, force is applied to the handle 206 to better engage the buckle 205 in the engagement groove 204 or pull the buckle 205 out of the engagement groove 204.

[0038] It is understood that this utility model does not limit the specific structure of the detachable structure. As long as the detachable structure can realize the quick assembly and disassembly of the base plate 1 and the mounting plate 202, no matter what the structure of the detachable structure is, it is within the protection scope of this utility model.

[0039] Furthermore, the bottom surface of the substrate 1 is provided with a plurality of third positioning pins 201, and the top surface of the mounting plate 202 is provided with a plurality of third positioning holes 203 corresponding to the third positioning pins 201. During initial installation, all the third positioning pins 201 of the substrate 1 need to be aligned and inserted into the corresponding third positioning holes 203, so that the substrate 1 and the mounting plate 202 retain only the vertical degree of freedom. Once all the third positioning pins 201 are inserted into the corresponding third positioning holes 203, the relative positions of the engaging groove 204 and the latch 205 are unique, and the positional relationship between the engaging groove 204 and the latch 205 does not need to be considered.

[0040] Furthermore, the front side of the mounting plate 202 protrudes upward to cover the substrate 1, thereby hiding the mounting gap between the substrate 1 and the mounting plate 202 and preventing the passenger's hair from getting caught in the mounting gap.

[0041] Furthermore, the sliding seat 4 is slidably connected to the top surface of the substrate 1 in the front-back direction via a sliding structure. The sliding structure includes a groove 207 disposed on the top surface of the substrate 1 and a slider 208 disposed on the bottom surface of the sliding seat 4. The groove 207 is disposed in the front-back direction, and the slider 208 slides in the direction of the groove 207, allowing the sliding seat 4 to slide on the substrate 1. Since the groove 207 is not a through groove, when the slider 208 moves to either end of the groove 207, the sliding seat 4 cannot continue to move in the predetermined direction, thereby preventing the sliding seat 4 from detaching from the substrate 1.

[0042] In this embodiment, to lock the front-to-back position between the sliding seat 4 and the substrate 1, a ring 209 is provided on each of the left and right sides of the sliding seat 4. The ring 209 has a through hole arranged in the vertical direction, and a first positioning pin 5 is movably connected in each ring 209. Since the top of the first positioning pin 5 has a slightly larger pin head, the first positioning pin 5 will not fall down from the ring 209. Correspondingly, the top surface of the substrate 1 is provided with two sets of parallel holes, each set of parallel holes is provided with multiple first positioning holes 3, and all the first positioning holes 3 in each set are arranged in the front-to-back direction. The two first positioning pins 5 are respectively provided with the two sets of parallel holes, and each first positioning pin 5 can be inserted into all the first positioning holes 3 in each set of parallel holes. All the first positioning holes 3 in each set of parallel holes are located on the moving path of the corresponding first positioning pin 5.

[0043] To prevent the first positioning pin 5 from being over-inserted into the first positioning hole 3, a first limiting sleeve 21 is provided at the bottom of the first positioning pin 5. The size of the first limiting sleeve 21 is larger than the size of the first positioning hole 3. When the first limiting sleeve 21 abuts against the outside of the first positioning hole 3, the first positioning pin 5 cannot be further inserted into the depth of the first positioning hole 3.

[0044] When it is necessary to lock the front-to-back position between the sliding seat 4 and the substrate 1, the sliding seat 4 is first slid in the front-to-back direction until the two first positioning pins 5 are aligned with the two first positioning holes 3. Then, the two first positioning pins 5 are moved downwards so that they are inserted into the two first positioning holes 3. Since each set of parallel holes has multiple first positioning holes 3, the sliding seat 4 and the substrate 1 have multiple front-to-back locking positions to meet various adjustment needs. When it is necessary to release the front-to-back locking between the sliding seat 4 and the substrate 1, the two first positioning pins 5 are pulled upwards to disengage from the two first positioning holes 3, thus releasing the front-to-back locking between the sliding seat 4 and the substrate 1.

[0045] Furthermore, to facilitate control of the positions of the two first positioning pins 5, the pin heads of the two first positioning pins 5 are connected to a push handle 18. The push handle 18 has a U-shaped structure and is arranged around the rear side of the sliding seat 4 to facilitate the passenger's reach for it. The middle part of the push handle 18 is also provided with a gripping part 19 for easy gripping, and the gripping part 19 is covered with an anti-slip sleeve 20 to increase the coefficient of friction when gripping.

[0046] When it is necessary to adjust the front-to-back position between the sliding seat 4 and the substrate 1, first grasp the anti-slip sleeve 20 and lift the push handle 18 upwards so that the two first positioning pins 5 move upwards away from the corresponding two first positioning holes 3. While keeping the push handle 18 lifted upwards, pull the anti-slip sleeve 20 in the direction to be adjusted, thereby driving the sliding seat 4 to slide in the predetermined direction. After the adjustment is in place, remove the force applied to the anti-slip sleeve 20. At this time, the two first positioning pins 5 tend to move downwards under the action of gravity. Then, fine-tune the position of the sliding seat 4 so that the two first positioning pins 5 are realigned with the two first positioning holes 3. Once the two first positioning pins 5 are aligned with the two first positioning holes 3, the two first positioning pins 5 will insert downwards into the two first positioning holes 3 under the action of gravity, thereby locking the front-to-back position between the sliding seat 4 and the substrate 1.

[0047] It is understood that the top surface of the substrate 1 may also be provided with only one set of parallel holes. Correspondingly, a first positioning pin 5 is provided on the corresponding side of the sliding seat 4. In this case, the sliding seat 4 and the substrate 1 are locked by a first positioning pin 5 and a set of parallel holes, and it is not limited to the above embodiment.

[0048] like Figure 4 and Figure 5As shown, the lifting module is connected to the top surface of the sliding seat 4. The lifting module includes a support frame, a rotating rod 7, a gear 11, and a rack 12. The support frame consists of two support blocks 6, which are spaced apart in the left-right direction. Both support blocks 6 are connected to the top surface of the sliding seat 4, and the rotating rod 7 is rotatably connected between the two support blocks 6. The gear 11 is rigidly connected to the middle of the rotating rod 7. The rack 12 is arranged in the up-down direction, and the top of the rack 12 is connected to the headrest cushion 13. The rack 12 is engaged with the gear 11. When the rotating rod 7 rotates relative to the support block 6, the rotating rod 7 drives the gear 11 to rotate together. Since the rack 12 is engaged with the gear 11, when the gear 11 rotates, the rack 12 can move up and down in the up-down direction, ultimately driving the headrest cushion 13 to move up and down.

[0049] Furthermore, the top surface of the sliding seat 4 is connected to multiple guide rods 14, and the headrest cushion 13 is provided with multiple guide holes that match the guide rods 14. The headrest cushion 13 and the sliding seat 4 are guided by the guide rods 14 to improve the stability of the headrest cushion 13 when it moves up and down. At the same time, in order to avoid hand pinching accidents, protective sleeves 25 are used to cover the corresponding positions of the gear 11 and the rack 12 to prevent the gear 11 and the rack 12 from being exposed.

[0050] Furthermore, to facilitate the rotation of the rotating rod 7, the rotating rod 7 has an extension extending from one of the support blocks 6, and the extension is rigidly connected to a handle 17, which the passenger can rotate to drive the rotating rod 7. Of course, in addition to manual control, the rotating rod 7 can also be controlled by an electric power source, in which case the spindle of the electric power source needs to be rigidly connected to the extension of the rotating rod 7.

[0051] In this embodiment, to lock the vertical position between the headrest cushion 13 and the sliding seat 4, one end of the rotating rod 7 is rigidly connected to a disk 8, and the corresponding support block 6 is provided with a cavity to accommodate the disk 8. The outer circumferential surface of the disk 8 is provided with a plurality of second positioning holes 9. The top surface of the support block 6 is provided with a pin hole that extends into the cavity, and a second positioning pin 10 is movably connected in the pin hole. The plurality of second positioning holes 9 all have a moving path directly opposite the pin hole.

[0052] When the disc 8 rotates until its second positioning hole 9 aligns with the pin hole, the second positioning pin 10 will insert downward into the second positioning hole 9 under the action of gravity, thereby locking the rotation of the disc 8 and the support block 6, preventing the rotating rod 7 from rotating. Once the rotating rod 7 stops rotating, the meshing action of the gear 11 and the rack 12 will no longer have power, thus locking the vertical position between the headrest cushion 13 and the sliding seat 4.

[0053] Furthermore, to prevent excessive insertion of the second positioning pin 10 into the second positioning hole 9, a second limiting sleeve 15 is provided at the bottom of the second positioning pin 10. The size of the second limiting sleeve 15 is larger than the size of the second positioning hole 9. When the second limiting sleeve 15 abuts against the outside of the second positioning hole 9, the second positioning pin 10 cannot be further inserted into the depth of the second positioning hole 9. At the same time, a pin head is provided at the top of the second positioning pin 10. The size of the pin head is larger than the size of the pin hole, thereby ensuring that the second positioning pin 10 will not be completely embedded in the pin hole.

[0054] When adjusting the vertical position between the headrest cushion 13 and the sliding seat 4, first grasp the second positioning pin 10 and lift it upwards so that the second positioning pin 10 moves upwards away from the corresponding second positioning hole 9. While maintaining the upward lifting of the second positioning pin 10, rotate the handle 17 to move the headrest cushion 13 up or down in the predetermined direction. After the adjustment is in place, remove the force applied to the second positioning pin 10. At this time, the second positioning pin 10 tends to move downwards under the action of gravity. Then, finely adjust the position of the handle 17 so that the second positioning pin 10 is aligned with the second positioning hole 9 again. Once the second positioning pin 10 is aligned with the second positioning hole 9, the second positioning pin 10 will insert downwards into the second positioning hole 9 under the action of gravity, thereby locking the vertical position between the headrest cushion 13 and the sliding seat 4.

[0055] It is understandable that the disc 8 on the rotating rod 7 can also be set outside the support block 6. In this case, all the second positioning holes 9 are set on the end face of the disc 8, and the pin hole and the second positioning pin 10 are both set horizontally, not limited to the above embodiment. However, since the second positioning pin 10 moves in a horizontal manner, it lacks the assistance of gravity, so an elastic element is required to keep the second positioning pin 10 engaged with the second positioning hole 9.

[0056] With the above structure, passengers can adjust the front-to-back position of the headrest cushion 13 relative to the base plate 1 by pushing the push handle 18, and lock the front-to-back position of the headrest cushion 13 by the cooperation of the first positioning pin 5 and the first positioning hole 3. They can also adjust the vertical position of the headrest cushion 13 relative to the base plate 1 by rotating the handle 17, and lock the vertical position of the headrest cushion 13 by the cooperation of the second positioning pin 10 and the second positioning hole 9. This is to adapt to people of different body types and different riding habits, as well as various vehicle models and usage scenarios. At the same time, it will not easily shake or shift during vehicle operation, ensuring that the headrest cushion 13 remains stable in any adjustment position and continuously provides reliable support for the head and neck.

[0057] like Figures 1 to 3As shown, in some embodiments of this utility model, the front of the headrest cushion 13 is provided with a soft cushion 16 and an adaptive cushion 23. The soft cushion 16 is located above the adaptive cushion 23, providing protection and support for the head. The adaptive cushion 23 is located on the left and right sides of the soft cushion 16. The adaptive cushion 23 is made of flexible material and can adaptively adjust its size according to the shape of the passenger's neck, providing a more comfortable support experience. In addition, the front surface of the mounting plate 202 is provided with a protective pad 26, which is used to reduce the injury suffered by the passenger due to accidental collision during travel.

[0058] In some embodiments of this utility model, a nameplate 22 is also provided on the front of the headrest cushion 13. The nameplate 22 is located above the cushion 16 and is used to identify product information and brand logo. A label 24 is provided on the back of the headrest cushion 13. Compared with the nameplate 22, the label 24 displays more information, including but not limited to production information, installation guidelines, compliance and certification marks, etc.

[0059] According to a second aspect embodiment of the present invention, a car seat includes a headrest bracket according to the first aspect embodiment of the present invention, and also includes a car seat, wherein a mounting plate 202 serves as the topmost structure of the car seat and is fixedly connected to the car seat. Even if the headrest bracket is removed from the mounting plate 202, the mounting plate 202 remains connected to the car seat; that is, the mounting plate 202 serves as a connecting assembly between the headrest bracket and the car seat.

[0060] Since the car seat adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0061] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A headrest support, characterized in that, include: The substrate (1) has a plurality of first positioning holes (3) on its top surface along the front-back direction; A sliding seat (4) is slidably connected to the top surface of the substrate (1) in the front-back direction via a sliding structure. The sliding seat (4) is movably connected to a first positioning pin (5). A plurality of first positioning holes (3) are located on the moving path of the first positioning pin (5). The relative position between the sliding seat (4) and the substrate (1) is defined by the first positioning pin (5) and the first positioning holes (3). The lifting module includes a support frame, a rotating rod (7), a gear (11), and a rack (12). The support frame is connected to the top surface of the sliding seat (4). The rotating rod (7) is arranged in the left-right direction and rotatably connected to the support frame. The gear (11) is rigidly connected to the middle of the rotating rod (7). The rack (12) is arranged in the up-down direction. A headrest pad (13) is connected to the top of the rack (12). The rack (12) and the gear (11) are engaged. A disc (8) is rigidly connected to the end of the rotating rod (7). The outer wall of the disc (8) is provided with a plurality of second positioning holes (9). The support frame is movably connected with a second positioning pin (10). The plurality of second positioning holes (9) all have a moving path directly opposite the second positioning pin (10).

2. The headrest support according to claim 1, characterized in that: A mounting plate (202) is provided below the substrate (1), and the substrate (1) and the mounting plate (202) are connected by a detachable structure.

3. The headrest support according to claim 2, characterized in that: The detachable structure includes a locking groove (204) provided on the facade of the substrate (1) and a slot buckle (205) rotatably connected to the facade of the mounting plate (202). When the substrate (1) is connected to the mounting plate (202), the locking groove (204) is located on the moving path of the slot buckle (205).

4. The headrest support according to claim 2, characterized in that: The bottom surface of the substrate (1) is provided with a plurality of third positioning pins (201), and the top surface of the mounting plate (202) is provided with a plurality of third positioning holes (203) corresponding to the third positioning pins (201).

5. The headrest support according to claim 1, characterized in that: The sliding structure includes a groove (207) disposed on the top surface of the substrate (1) and a slider (208) disposed on the bottom surface of the sliding seat (4), wherein the slider (208) slides along the setting direction of the groove (207).

6. The headrest support according to claim 1, characterized in that: All the first positioning holes (3) are divided into two groups of parallel holes. The two groups of parallel holes are respectively set on the left and right sides of the substrate (1). Each of the left and right sides of the sliding seat (4) is provided with a first positioning pin (5).

7. The headrest support according to claim 6, characterized in that: The two first positioning pins (5) are connected together to the push handle (18).

8. The headrest support according to claim 1, characterized in that: The rotating rod (7) has an extension extending out of the support frame, and the extension is rigidly connected to a handle (17).

9. The headrest support according to claim 1, characterized in that: The top surface of the sliding seat (4) is connected to several guide rods (14), and the headrest cushion (13) and the sliding seat (4) are guided to move through the guide rods (14).

10. A car seat, characterized in that, include: The headrest support as described in any one of claims 1 to 9; The seat body, the top of which is connected to the headrest bracket.

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