Angle-adjustable automobile seat headrest

Abstract

The invention discloses an angle-adjustable automobile seat headrest, and relates to the technical field of automobile seat headrest adjustment. The angle-adjustable automobile seat headrest comprises a headrest body and further comprises a mounting shell, a headrest rod is arranged in the mounting shell in a penetrating mode, fixing rods are connected to the lower ends of the two sides of the headrest rod, and adjusting pieces are arranged on the two sides of the upper end of each fixing rod; and the rotary adjusting structure is used for adjusting the pitching angle of the headrest body, and the toothed plate is connected with the limiting piece in a clamped mode. According to the angle-adjustable automobile seat headrest, the pitching angle of the headrest body can be conveniently adjusted according to the requirements of a user, the comfort and safety of the user are improved, the applicability of the device is improved, the overall structure is simple, light weight is achieved, operation is convenient, and the headrest body can be conveniently adjusted according to the requirements of the user. The height position of the headrest main body is adjusted, the use is flexible, and the functionality is high.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive seat headrest adjustment, and particularly to an adjustable-angle automotive seat headrest. Background Art

[0002] With the increasing frequency of automobile use, passengers' demands for the internal functions of automobiles are becoming more and more diverse, and the requirements for automobile safety are also getting higher and higher. Among automotive seats, the headrest is one of the main components of the automotive seat. The height and rotation angle of the headrest both affect the comfort of passengers, and the seat headrest can also provide a safe riding environment for passengers.

[0003] Currently, the headrests of automotive seats generally can only adjust the height, and the rotation angle cannot be adjusted. For passengers of different body sizes, adjusting the rotation angle of the headrest can improve the comfort of the passengers' heads during the ride. At the same time, the protection of the headrest for the driver and passengers during a collision is particularly important. Generally, two-way headrests cannot adjust the distance between the headrest and the passengers' heads. In case of an emergency, the headrest cannot provide good support for the head, thus there is a risk of causing casualties to the driver and passengers. Therefore, we propose an adjustable-angle automotive seat headrest to solve the above problems. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an adjustable-angle automotive seat headrest, which solves the problems that the headrest generally can only adjust the height, while the rotation angle cannot be adjusted, and the comfort and safety are relatively low.

[0005] To achieve the above object, the present invention is realized through the following technical solutions: An adjustable-angle automotive seat headrest includes a headrest main body, and further includes a mounting shell. The mounting shell is installed on the headrest main body. A headrest rod is disposed through the mounting shell. Fixed rods are connected to the lower ends of both sides of the headrest rod. Adjusting members are disposed on both sides of the upper ends of the fixed rods. The two groups of adjusting members are arranged in a staggered and symmetrical manner for adjusting the height of the headrest main body. The adjusting members are slidably clamped with the headrest rod; a rotation adjustment structure for adjusting the pitching angle of the headrest main body. The rotation adjustment structure is installed inside the mounting shell. The rotation adjustment structure includes a first torsion spring. The first torsion spring is sleeved outside the upper end of the headrest rod. One end of the first torsion spring is connected to a toothed plate. A limiting member is connected to the lower end of the toothed plate. A rotation shaft is disposed through the limiting member. The toothed plate is snap-connected with the limiting member.

[0006] Further, the headrest main body includes a headrest front cover and a headrest rear cover. The headrest front cover and the headrest rear cover are snap-connected. A headrest face cover is installed on one side of the headrest front cover away from the headrest rear cover.

[0007] Further, the installation shell includes a front cover of the mechanism and a rear cover of the mechanism. Rectangular arrays of installation holes are provided on both the front cover of the mechanism and the rear cover of the mechanism. The front and rear installation holes correspond to each other one by one, and a combined bolt is penetrated through the front and rear installation holes. An inner mechanism bolt is penetrated through the combined bolt; Two installation columns are symmetrically arranged on one side of the front cover of the mechanism away from the rear cover of the mechanism, and the two installation columns extend into the front cover of the headrest. Two connecting blocks are symmetrically arranged on one side of the rear cover of the mechanism close to the front cover of the mechanism.

[0008] Further, the headrest rod is U-shaped. One end of the first torsion spring is connected to the third connection hole, and the third connection hole is opened on the toothed plate. The other end of the first torsion spring is connected to the baffle, and the baffle is arranged on the front cover of the mechanism. The headrest rod is connected to the card slot, and the card slot is opened on one side of the front cover of the mechanism close to the rear cover of the mechanism.

[0009] Further, the toothed plate is in the shape of an eagle's beak. Tooth grooves are linearly arranged at the bottom of the toothed plate. There are four tooth grooves, which are used to determine the rotation gears of the headrest body. A reset hook is arranged below one side of the toothed plate, and a cylindrical groove is arranged at the upper end of the toothed plate for cooperation with the headrest rod.

[0010] Further, the limiting member includes an installation block. A front reset stop tooth is rotatably installed in the installation block. A rear reset plate is arranged on one side of the installation block away from the front reset stop tooth. The upper end of the front reset stop tooth is clamped with the tooth groove. The rear reset plate is connected to the reset hook. A second torsion spring is installed in the installation block. One end of the second torsion spring is connected to the first connection hole, and the first connection hole is opened on the installation block. The other end of the second torsion spring is connected to the second connection hole, and the second connection hole is arranged on the front cover of the mechanism.

[0011] Further, the rotating shaft penetrates through the installation block. Reinforcing ribs are arranged on both sides of the hole groove on the installation block connected to the rotating shaft. The rotating shaft and the installation block are connected to the groove, and the groove is clamped on the front cover of the mechanism.

[0012] Further, the fixing rod is used for connecting with the seat. The fixing rod extends into the lower end of the headrest rod. The adjusting member penetrates through the side wall of the headrest rod and extends into the fixing rod.

[0013] Further, the adjusting member includes a pressing block. One side of the pressing block close to the fixing rod is provided with a connecting rod, and the other end of the connecting rod is provided with a clamping block. The clamping block is in a lying L shape. The other side of the clamping block is provided with a connecting spring. The clamping block is slidably connected to the first connecting groove, and the connecting spring is installed in the first connecting groove; the pressing block is arranged outside the headrest rod, the connecting rod penetrates through and is connected to the second connecting groove. Both the first connecting groove and the second connecting groove are opened on the fixing rod, and the first connecting groove is communicated with the second connecting groove.

[0014] Further, one end of the clamping block away from the connecting rod extends out of the fixing rod movably, and the clamping block is connected to the jack. The connecting rod is slidably connected to the sliding groove. The jacks are linearly arranged on the sliding groove. The diameter of the jack is larger than that of the sliding groove. Both the sliding groove and the jack are opened on the headrest rod.

[0015] The present invention has the following beneficial effects:

[0016] (1). For the adjustable-angle car seat headrest, through the cooperation of the installation shell, the headrest rod, the first torsion spring, the toothed plate, the limiting member and the rotating shaft, it is used to adjust the pitching angle of the headrest main body according to the needs of the user, provide better support for the head, improve the comfort and safety of the user, and improve the applicability of the device.

[0017] (2). For the adjustable-angle car seat headrest, through the cooperation of the first torsion spring, the headrest rod, the installation block, the second torsion spring, the rotating shaft, the tooth groove, the front reset stop tooth, the rear reset plate and the reset hook, it is used to realize the rotation angle adjustment of the headrest main body. The overall structure is simple, lightweight is achieved, and it is convenient to operate.

[0018] (3). For the adjustable-angle car seat headrest, through the cooperation of the headrest rod, the fixing rod, the pressing block, the connecting rod, the clamping block, the connecting spring, the first connecting groove, the second connecting groove, the sliding groove and the jack, it is used to adjust the height position of the headrest main body according to the needs of the user. The structure is simple, it can be quickly operated, is flexible to use, and has high functionality.

[0019] Of course, it is not necessary for any product implementing the present invention to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the structural schematic diagram of the present invention;

[0021] Figure 2 is the structural schematic diagram of the first torsion spring and the headrest rod of the present invention;

[0022] Figure 3 is the structural schematic diagram of the toothed plate and the tooth groove of the present invention;

[0023] Figure 4 This is a schematic structural diagram of the front reset retaining tooth and the rear reset plate of the present invention;

[0024] Figure 5 This is a schematic structural diagram of the mounting block and the rotating shaft of the present invention;

[0025] Figure 6 This is a schematic structural diagram of the front cover of the mechanism of the present invention;

[0026] Figure 7 This is a schematic structural diagram of the rear cover of the mechanism of the present invention;

[0027] Figure 8 This is a schematic structural diagram of the headrest rod and the fixing rod of the present invention;

[0028] Figure 9 This is a schematic structural diagram of the clamping block and the connecting spring of the present invention;

[0029] Figure 10 This is a schematic structural diagram of the fixing rod and the first connecting groove of the present invention;

[0030] Figure 11 This is the present invention Figure 8 Schematic structural diagram of the position A in the present invention.

[0031] In the figure, 1, headrest surface cover; 2, front headrest cover; 3, rear headrest cover; 4, front mechanism cover; 5, rear mechanism cover; 6, headrest rod; 7, first torsion spring; 8, mechanism bolt; 9, assembled bolt; 10, toothed plate; 11, mounting block; 12, second torsion spring; 13, rotating shaft; 14, tooth groove; 15, front reset retaining tooth; 16, rear reset plate; 17, first connecting hole; 18, groove; 19, second connecting hole; 20, third connecting hole; 21, baffle; 22, mounting hole; 23, mounting post; 24, card slot; 25, reset hook; 26, connecting block; 27, fixing rod; 28, pressing block; 29, connecting rod; 30, clamping block; 31, connecting spring; 32, first connecting groove; 33, second connecting groove; 34, sliding groove; 35, jack. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] Please refer to Figures 1-11 , an embodiment of the present invention provides a technical solution: an adjustable-angle car seat headrest, including a headrest main body, and further including a mounting shell. The mounting shell is mounted on the headrest main body. A headrest rod 6 is disposed through the mounting shell. Fixed rods 27 are connected to the lower ends of both sides of the headrest rod 6. Adjusting members are disposed on both upper sides of the fixed rods 27. The two groups of adjusting members are arranged in a staggered and symmetrical manner for adjusting the height of the headrest main body. The adjusting members are slidably clamped with the headrest rod 6; a rotation adjustment structure for adjusting the pitching angle of the headrest main body. The rotation adjustment structure is installed inside the mounting shell. The rotation adjustment structure includes a first torsion spring 7. The first torsion spring 7 is sleeved outside the upper end of the headrest rod 6. One end of the first torsion spring 7 is connected to a toothed plate 10. A limiting member is connected to the lower end of the toothed plate 10. A rotation shaft 13 is disposed through the limiting member. The toothed plate 10 is snap-connected with the limiting member.

[0035] Specifically, the headrest main body includes a headrest front cover 2 and a headrest rear cover 3. The headrest front cover 2 and the headrest rear cover 3 are snap-connected. A headrest surface cover 1 is installed on one side of the headrest front cover 2 away from the headrest rear cover 3. The mounting shell includes a mechanism front cover 4 and a mechanism rear cover 5. Mounting holes 22 are arranged in a rectangular array on both the mechanism front cover 4 and the mechanism rear cover 5. The front and rear mounting holes 22 correspond to each other. A fitting bolt 9 is disposed through the front and rear two mounting holes 22. A mechanism bolt 8 is disposed through the fitting bolt 9; Two mounting columns 23 are symmetrically arranged on one side of the mechanism front cover 4 away from the mechanism rear cover 5. The two mounting columns 23 extend into the headrest front cover 2. Two connecting blocks 26 are symmetrically arranged on one side of the mechanism rear cover 5 close to the mechanism front cover 4.

[0036] In this embodiment, the mechanism front cover 4 and the mechanism rear cover 5 are assembled together through the mechanism bolt 8 and the fitting bolt 9. Concave grooves are provided at the upper ends of the two covers, corresponding to the headrest rod 6. The upper rod of the headrest rod 6 serves as the rotation shaft rod of the rotation adjustment structure. The mechanism front cover 4 and the mounting column 23 are of an integrally formed structure. The mechanism rear cover 5 and the connecting block 26 are of an integrally formed structure. The mechanism front cover 4 and the mechanism rear cover 5 are connected and installed by means of claws and screwing. Finally, the headrest surface cover 1 is covered to assemble into a headrest assembly with an adjustable headrest angle.

[0037] Specifically, the headrest rod 6 is U-shaped. One end of the first torsion spring 7 is connected to the third connection hole 20, and the third connection hole 20 is opened on the toothed plate 10. The other end of the first torsion spring 7 is connected to the baffle 21, and the baffle 21 is arranged on the front cover 4 of the mechanism. The headrest rod 6 is connected to the card slot 24, and the card slot 24 is opened on the side of the front cover 4 of the mechanism close to the rear cover 5 of the mechanism. The toothed plate 10 is in the shape of an eagle's beak. Four tooth grooves 14 are linearly arranged at the bottom of the toothed plate 10, and the tooth grooves 14 are used to determine the rotation gears of the headrest main body. A reset hook 25 is arranged below one side of the toothed plate 10. A cylindrical groove is arranged at the upper end of the toothed plate 10 for cooperation with the headrest rod 6. The limiting member includes a mounting block 11. A front reset stop tooth 15 is rotatably mounted in the mounting block 11. A rear reset plate 16 is arranged on the side of the mounting block 11 away from the front reset stop tooth 15. The upper end of the front reset stop tooth 15 is clamped with the tooth groove 14. The rear reset plate 16 is connected to the reset hook 25. A second torsion spring 12 is mounted in the mounting block 11. One end of the second torsion spring 12 is connected to the first connection hole 17, and the first connection hole 17 is opened on the mounting block 11. The other end of the second torsion spring 12 is connected to the second connection hole 19, and the second connection hole 19 is arranged on the front cover 4 of the mechanism. The rotating shaft 13 penetrates through the mounting block 11. Reinforcing ribs are arranged on both sides of the hole groove on the mounting block 11 connected to the rotating shaft 13. The rotating shaft 13 and the mounting block 11 are connected to the groove 18, and the groove 18 is clamped on the front cover 4 of the mechanism.

[0038] In this embodiment, the toothed plate 10 is welded and fixed at the middle position of the headrest rod 6. The number of the tooth grooves 14 can be increased or decreased according to the needs of the user. The rotating shaft 13 passes through the hole position on the mounting block 11 and is fixed on the groove 18 of the front cover 4 of the mechanism. The first torsion spring 7 plays a role in adjusting the angle and resetting the whole limiting member.

[0039] Since the toothed plate 10 is fixed to the headrest rod 6 by welding, when adjusting the gear engaged by the toothed plate 10, the function of rotating the headrest main body can be realized by rotating the headrest main body and the mounting shell. When the first tooth groove 14 of the toothed plate 10 is clamped at the front reset stop tooth 15, it is the initial angle of the headrest main body; when the second tooth groove 14 is clamped at the front reset stop tooth 15, it is the first angle after the headrest main body rotates; when the third tooth groove 14 is clamped at the front reset stop tooth 15, it is the second angle after the headrest main body rotates; and so on. By increasing or decreasing the number of the tooth grooves 14 on the toothed plate 10, the adjustment gears of the headrest main body and the total stroke of the rotation angle can be set.

[0040] When the toothed plate 10 reaches the end, the reset hook 25 first pushes open the front reset stop tooth 15, and the mounting block 11 rotates around the rotating shaft 13. At this time, limited by the second torsion spring 12, the mounting block 11 rotates to a certain angle. Since the tooth groove 14 in the toothed plate 10 is not engaged with the front reset stop tooth 15, the toothed plate 10 will not be locked. The first torsion spring 7 pulls the toothed plate 10 back to reset. After the reset hook 25 pushes the rear reset plate 16 back to its original position, the front reset stop tooth 15 re-engages with the first tooth groove 14 of the toothed plate 10, realizing the reset function of the entire angle adjustment structure. Through this structure, the functions of rotation gear shifting and reset are cyclically realized.

[0041] Specifically, the fixing rod 27 is used to connect with the seat. The fixing rod 27 extends into the lower end of the headrest rod 6. The adjusting member penetrates through the side wall of the headrest rod 6 and extends into the fixing rod 27. The adjusting member includes a pressing block 28. A connecting rod 29 is installed on one side of the pressing block 28 close to the fixing rod 27. The other end of the connecting rod 29 is installed with a clamping block 30. The clamping block 30 is in a lying L shape. A connecting spring 31 is installed on the other side of the clamping block 30. The clamping block 30 is slidably connected with the first connecting groove 32, and the connecting spring 31 is installed in the first connecting groove 32; the pressing block 28 is arranged outside the headrest rod 6. The connecting rod 29 penetrates and is connected with a second connecting groove 33. Both the first connecting groove 32 and the second connecting groove 33 are opened on the fixing rod 27, and the first connecting groove 32 communicates with the second connecting groove 33. One end of the clamping block 30 away from the connecting rod 29 extends out of the fixing rod 27 movably, and the clamping block 30 is connected with the jack 35. The connecting rod 29 is slidably connected with the sliding groove 34. The jacks 35 are linearly arranged on the sliding groove 34. The diameter of the jack 35 is larger than that of the sliding groove 34. Both the sliding groove 34 and the jacks 35 are opened on the headrest rod 6.

[0042] In this implementation, the pressing block 28, the connecting rod 29 and the clamping block 30 are an integral structure. The connecting spring 31 is fixedly installed between the clamping block 30 and the first connecting groove 32. At the same time, press the pressing blocks 28 on both sides of the fixing rod 27. The clamping block 30 is squeezed through the connecting rod 29, and the connecting spring 31 is compressed. The clamping block 30 moves away from the jack 35 and moves into the first connecting groove 32, then the limit connection between the fixing rod 27 and the headrest rod 6 can be released. Move the fixing rod 27, and the connecting rod 29 slides in the sliding groove 34, then the height of the headrest main body can be adjusted according to the needs of the user. After adjusting to the position, release the pressing block 28, and the connecting spring 31 resets, so that the clamping blocks 30 on both sides of the fixing rod 27 are respectively clamped into the corresponding new jacks 35.

[0043] During use, by rotating the headrest main body and the mounting shell, the function of rotating the headrest main body can be achieved. When the first tooth groove 14 of the tooth plate 10 is stuck at the front reset blocking tooth 15, it is the initial angle of the headrest main body; when the second tooth groove 14 is stuck at the front reset blocking tooth 15, it is the first angle after the headrest main body rotates; when the third tooth groove 14 is stuck at the front reset blocking tooth 15, it is the second angle after the headrest main body rotates; and so on. By increasing or decreasing the number of tooth grooves 14 on the tooth plate 10, the adjustment gears of the headrest main body and the total stroke of the rotation angle can be set. When the tooth plate 10 reaches the end, the reset hook 25 first pushes open the front reset blocking tooth 15, and the mounting block 11 will rotate around the rotation shaft 13. At this time, limited by the second torsion spring 12, when the mounting block 11 rotates to a certain angle, since the tooth groove 14 in the tooth plate 10 is not engaged with the front reset blocking tooth 15, the tooth plate 10 will not be locked. The first torsion spring 7 pulls the tooth plate 10 back to reset. After the reset hook 25 pushes the rear reset plate 16 back to its original position, the front reset blocking tooth 15 is re-engaged with the first tooth groove 14 of the tooth plate 10, realizing the reset function of the entire angle adjustment structure. Through this structure, the functions of rotating and shifting gears and resetting are cyclically achieved.

[0044] When the user needs to adjust the height of the headrest main body, press the pressing blocks 28 on both sides of the two fixing rods 27 at the same time. The connecting rod 29 squeezes the clamping block 30, the connecting spring 31 is compressed, the clamping block 30 moves away from the jack 35 and moves into the first connecting groove 32, then the limiting connection between the fixing rod 27 and the headrest rod 6 can be released. Move the fixing rod 27, and the connecting rod 29 slides in the sliding groove 34, then the height of the headrest main body can be adjusted according to the user's needs. After adjusting to the position, release the pressing block 28, the connecting spring 31 resets, and the clamping blocks 30 on both sides of the fixing rod 27 are respectively clamped into the corresponding new jacks 35.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0046] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An adjustable-angle car seat headrest, comprising a headrest body, characterized in that, Further comprising: An installation shell which is installed on the headrest main body. A headrest rod (6) is disposed through the installation shell. Fixed rods (27) are connected to the lower ends of both sides of the headrest rod (6). Adjusting members are disposed on both upper sides of the fixed rods (27). The two groups of adjusting members are arranged in a staggered and symmetric manner for adjusting the height of the headrest main body. The adjusting members are slidably clamped with the headrest rod (6); A rotation adjustment structure which is used for adjusting the pitching angle of the headrest main body. The rotation adjustment structure is installed inside the installation shell. The rotation adjustment structure includes a first torsion spring (7). The first torsion spring (7) is sleeved outside the upper end of the headrest rod (6). One end of the first torsion spring (7) is connected to a toothed plate (10). A limiting member is connected to the lower end of the toothed plate (10). A rotation shaft (13) is disposed through the limiting member. The toothed plate (10) is snap-connected with the limiting member.

2. The adjustable-angle car seat headrest according to claim 1, characterized in that: The headrest main body includes a headrest front cover (2) and a headrest rear cover (3). The headrest front cover (2) is snap-connected with the headrest rear cover (3). A headrest face cover (1) is installed on one side of the headrest front cover (2) away from the headrest rear cover (3).

3. The adjustable-angle car seat headrest according to claim 2, characterized in that: The installation shell includes a mechanism front cover (4) and a mechanism rear cover (5). Mounting holes (22) are arranged in a rectangular array on both the mechanism front cover (4) and the mechanism rear cover (5). The front and rear mounting holes (22) correspond to each other one by one. A combined bolt (9) is disposed through the front and rear mounting holes (22). A mechanism bolt (8) is disposed through the combined bolt (9); Two mounting posts (23) are symmetrically arranged on one side of the mechanism front cover (4) away from the mechanism rear cover (5). The two mounting posts (23) extend into the headrest front cover (2). Two connecting blocks (26) are symmetrically arranged on one side of the mechanism rear cover (5) close to the mechanism front cover (4).

4. The adjustable-angle car seat headrest according to claim 3, characterized in that: The headrest rod (6) is U-shaped. One end of the first torsion spring (7) is connected to a third connection hole (20). The third connection hole (20) is opened on the toothed plate (10). The other end of the first torsion spring (7) is connected to a baffle (21). The baffle (21) is arranged on the mechanism front cover (4). The headrest rod (6) is connected to a card slot (24). The card slot (24) is opened on one side of the mechanism front cover (4) close to the mechanism rear cover (5).

5. The adjustable-angle car seat headrest according to claim 4, characterized in that: The toothed plate (10) is in the shape of an eagle's beak. Tooth grooves (14) are linearly arranged at the bottom of the toothed plate (10). There are four tooth grooves (14) which are used for determining the rotation gears of the headrest main body. A reset hook (25) is disposed below one side of the toothed plate (10). A cylindrical groove is disposed at the upper end of the toothed plate (10) for cooperating with the headrest rod (6).

6. The adjustable-angle car seat headrest according to claim 5, characterized in that: The limiting member includes a mounting block (11), in which a front reset retaining tooth (15) is rotatably mounted. On the side of the interior of the mounting block (11) away from the front reset retaining tooth (15), a rear reset plate (16) is provided. The upper end of the front reset retaining tooth (15) is clamped with a tooth groove (14). The rear reset plate (16) is connected to a reset hook (25). A second torsion spring (12) is mounted in the mounting block (11). One end of the second torsion spring (12) is connected to a first connection hole (17) which is opened on the mounting block (11), and the other end of the second torsion spring (12) is connected to a second connection hole (19) which is provided on the front cover of the mechanism (4).

7. The adjustable-angle car seat headrest according to claim 6, characterized in that: The rotating shaft (13) penetrates through the mounting block (11). Reinforcing ribs are provided on both sides of the hole groove on the mounting block (11) connected to the rotating shaft (13). The rotating shaft (13) and the mounting block (11) are connected to a groove (18), and the groove (18) is clamped on the front cover of the mechanism (4).

8. The adjustable-angle car seat headrest according to claim 1, characterized in that: The fixed rod (27) is used to connect to the seat. The fixed rod (27) extends into the interior of the lower end of the headrest rod (6), and the adjusting member penetrates through the side wall of the headrest rod (6) and extends into the fixed rod (27).

9. The adjustable-angle car seat headrest according to claim 8, characterized in that: The adjusting member includes a pressing block (28). On the side of the pressing block (28) close to the fixed rod (27), a connecting rod (29) is mounted. At the other end of the connecting rod (29), a clamping block (30) is mounted. The clamping block (30) is in a lying L shape. On the other side of the clamping block (30), a connecting spring (31) is mounted. The clamping block (30) is slidably connected to a first connection groove (32), and the connecting spring (31) is mounted in the first connection groove (32). The pressing block (28) is arranged outside the headrest rod (6). The connecting rod (29) penetrates through and is connected to a second connection groove (33). Both the first connection groove (32) and the second connection groove (33) are opened on the fixed rod (27), and the first connection groove (32) is communicated with the second connection groove (33).

10. The adjustable-angle car seat headrest according to claim 9, characterized in that: One end of the clamping block (30) away from the connecting rod (29) extends out of the fixed rod (27) movably, and the clamping block (30) is connected to a jack (35). The connecting rod (29) is slidably connected to a sliding groove (34). The jacks (35) are linearly arrayed on the sliding groove (34). The diameter of the jack (35) is larger than the diameter of the sliding groove (34). Both the sliding groove (34) and the jack (35) are opened on the headrest rod (6).

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