Automobile seat angle adjuster structure

Abstract

The invention discloses an automobile seat angle adjuster structure, and relates to the technical field of automobile seats. The problem of operation convenience is solved. The main shaft is used for enabling the chair seat bracket and the chair back bracket to be rotationally connected with each other; the main shaft is rotationally connected to the chair seat support, the main shaft is in transmission connection to the chair back support through a speed reducing and torque increasing assembly, and the outer wall of the main shaft is provided with a bidirectional self-locking driving mechanism used for driving rotation of the main shaft; and the bidirectional self-locking driving mechanism comprises a sleeve fixed on the side wall of the seat bracket and a transition driving ring rotationally connected to the outer wall of the end part of the main shaft. By arranging the clamping groove, the pawl and other structures, the locking of the chair seat bracket and the chair back bracket is realized by utilizing the matching of the pawl and the clamping groove, so that the comprehensive operation of unlocking, adjusting and locking of the chair seat bracket and the chair back bracket can be realized through the single rotation action of the transition driving ring, and the operation convenience is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to an automobile seat angle adjuster structure. Background Art

[0002] A car seat consists of two parts: a seat and a backrest. The car seat recliner is used to adjust the angle between the seat and the backrest to increase the comfort of the driver and passengers.

[0003] Car seat adjusters are divided into electric adjustment and manual adjustment. Manually adjusted seats are widely used in the field of family cars due to their simple structure, low failure rate and low cost.

[0004] After searching, the Chinese patent was announced as CN206954046U, which discloses a manual recliner for a car seat, including a guide plate, a core spring, a flat-tooth slider, a drive block, a drive block insert embedded in the drive block, a main tooth plate and a sealing ring. The number of core springs and flat-tooth sliders is 4. Each flat-tooth slider is provided with an outer tooth at the outer end, a ratchet at the inner end, an inner tooth on the main tooth plate, and a driving ratchet on the drive block. The core spring causes the outer teeth of the flat-tooth slider to mesh with the inner teeth of the main tooth plate under the action of natural tension. At this time, the recliner is in a locked state. When the drive block is rotated clockwise, the drive block drives the flat-tooth slider to slide so that the outer teeth of the flat-tooth slider are separated from the meshing of the inner teeth of the main tooth plate, and the driving ratchet of the drive block meshes with the ratchet of the flat-tooth slider. At this time, the recliner is in an unlocked state.

[0005] The above patent has the following deficiencies: when adjusting the angle, it is necessary to perform the steps of unlocking-adjusting-locking, and it is necessary to unlock first, and then adjust the chair back separately, and then lock it separately after the adjustment is completed. The steps cannot be integrated, and the adjustment convenience is low. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a car seat recliner structure.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A car seat recliner structure, comprising a main shaft for rotatably connecting a seat support and a seat back support to each other; The main shaft is rotatably connected to the seat support, and the main shaft is transmission-connected to the seat back support through a speed reduction torque increasing assembly, and the outer wall of the main shaft is provided with a bidirectional self-locking driving mechanism for rotating the main shaft; The bidirectional self-locking drive mechanism comprises a sleeve fixed to the side wall of the seat support and a transition drive ring rotatably connected to the outer wall of the main shaft end, the inner wall of the main shaft is radially slidably connected with a plurality of ratchets, and the side wall of the sleeve is provided with a slot engaged with the ratchets; A connecting rope is fixed to the inner wall of the transition driving ring, the other end of the connecting rope is fixed to the outer wall of the pawl, and the pawl is connected to the inner wall of the main shaft through a spring.

[0008] Preferably: a damping assembly is arranged on the opposite side of the seat bracket and the seat back bracket, and the damping assembly includes an inner ring arranged on one side of the seat back bracket and an outer ring arranged on one side of the seat bracket, and an elastic scroll friction part is arranged on the opposite side of the inner ring and the outer ring, and the inner and outer sides of the elastic scroll friction part are respectively tightly contacted and matched with the outer wall of the inner ring and the inner wall of the outer ring.

[0009] Furthermore: the outer wall of the transition drive ring is rotatably connected to the peripheral drive ring, the outer inner wall of the transition drive ring is radially slidably connected to two groups of wedge blocks 2, the inner inner wall of the peripheral drive ring is radially slidably connected to two groups of wedge blocks 1 that respectively cooperate with the two groups of wedge blocks 2, the side wall of the wedge block 2 is buckled with a spring 2, and the other end of the spring 2 is buckled to the inner wall of the transition drive ring.

[0010] Based on the above scheme: one group of wedge blocks 1 and wedge blocks 2 cooperate with each other through inclined surface 1, and another group of wedge blocks 1 and wedge blocks 2 cooperate with each other through inclined surface 2, and the inclination directions of inclined surface 1 and inclined surface 2 are opposite.

[0011] A better solution in the above solution is: the inner wall of the peripheral driving ring is rotatably connected with an adjusting ring, the end faces of the adjusting ring are respectively provided with a group of limiting grooves 1, and the wedge block 1 is movably limited and matched with the inner wall of the limiting groove 1 through a limiting column.

[0012] As a further solution of the present invention: the inclination directions of the two groups of limiting grooves 1 are opposite.

[0013] At the same time, a torque increasing arm is fixed to the outer wall of the peripheral driving ring.

[0014] As a preferred embodiment of the present invention: a guide groove is formed on the inner wall of the peripheral driving ring, two limiting grooves perpendicular to the direction of the guide groove are formed at both ends of the guide groove, and an elastic rod is fixed to the outer wall of the adjusting ring.

[0015] At the same time, a handle is fixed to the end of the elastic rod.

[0016] As a better solution of the present invention: the deceleration and torque-increasing assembly includes a sun gear, an outer gear ring and a plurality of planetary gears meshed on opposite sides of the sun gear and the outer gear ring, the planetary gears are rotatably connected to the side wall of the seat support through planetary shafts, the outer gear ring is fixed to the side wall of the seat back support, and the sun gear is fixed to the outer wall of the main shaft.

[0017] The beneficial effects of the present invention are: 1. The present invention, by providing structures such as a card slot and a pawl, utilizes the cooperation between the pawl and the card slot to realize whether the seat bracket and the seat back bracket are locked or not, so that the comprehensive operation of unlocking, adjusting and locking the seat bracket and the seat back bracket can be realized through a single rotation action of the transition drive ring, thereby increasing the convenience of operation.

[0018] 2. The present invention, by setting a damping component, utilizes the friction force between the elastic scroll friction part and the inner ring and the outer ring to achieve a certain damping of the rotation between the seat bracket and the backrest bracket, thereby preventing stability and safety problems caused by the instantaneous movement of the backrest bracket at the moment of unlocking.

[0019] 3. The present invention, by setting structures such as a torque-increasing arm, can achieve a torque-increasing effect on the one hand, and can also utilize the small-angle swing of the torque-increasing arm to achieve intermittent large-angle adjustment of the chair back bracket, and can also switch the adjustment direction through the adjustment ring to increase the convenience of use. Finally, its overall functions are integrated inside the "ring-shaped" structure of the peripheral drive ring, realizing a highly integrated modular setting and reducing volume occupancy.

[0020] 4. The present invention, by providing components such as a sun gear, an outer gear ring, and a planetary gear, can make the seat back bracket rotate through the transmission of the sun gear, the planetary gear, and the outer gear ring when the main shaft rotates, thereby achieving the function of reducing speed and increasing torque, and further increasing the convenience of adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a car seat recliner structure proposed by the present invention; Figure 2 A schematic diagram of the matching structure of the main shaft and the transition drive ring of a car seat recliner structure proposed by the present invention; Figure 3 This is a schematic cross-sectional view of the matching structure of the main shaft and the transition drive ring of a car seat recliner structure proposed by the present invention; Figure 4 A schematic diagram of the structure of a damping component of a car seat recliner structure proposed by the present invention; Figure 5 This is a schematic diagram of the structure of a deceleration and torque-increasing component of a car seat recliner structure proposed by the present invention; Figure 6 A schematic diagram of the structure of a transition drive ring and a peripheral drive ring of a car seat recliner structure proposed by the present invention; Figure 7 A schematic diagram of the cooperation structure of a wedge block and an adjustment ring of a car seat recliner structure proposed by the present invention; Figure 8 The present invention provides a schematic diagram of the matching structure of a handle, an elastic rod and a guide groove of a car seat recliner structure.

[0022] In the figure: 1. Seat bracket; 2. Back bracket; 3. Damping assembly; 4. Speed ​​reduction and torque increasing assembly; 5. Bidirectional self-locking drive mechanism; 6. Main shaft; 7. Sleeve; 8. Slot; 9. Connecting rope; 10. Spring 1; 11. Transition drive ring; 12. Ratchet; 13. Inner ring; 14. Elastic scroll friction member; 15. Outer ring; 16. Sun gear; 17. Outer gear ring; 18. Planetary shaft; 19. Planetary gear; 20. Outer drive ring; 21. Wedge block 1; 22. Wedge block 2; 23. Spring 2; 24. Inclined surface 1; 25. Inclined surface 2; 26. Limiting column; 27. Limiting slot 1; 28. Adjusting ring; 29. ​​Handle; 30. Elastic rod; 31. Guide slot; 32. Limiting slot 2; 33. Torque increasing arm. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Embodiment 1:

[0025] A car seat recliner structure, such as Figure 1 - Figure 8 As shown, it includes a main shaft 6 for connecting the seat support 1 and the backrest support 2 to each other, the main shaft 6 is connected to the seat support 1, and the main shaft 6 is connected to the backrest support 2 through a speed reduction and torque increase component 4. The outer wall of the main shaft 6 is provided with a two-way self-locking drive mechanism 5 for driving the main shaft 6 to rotate.

[0026] The bidirectional self-locking drive mechanism 5 includes a sleeve 7 fixed to the side wall of the seat bracket 1 and a transition drive ring 11 rotatably connected to the outer wall of the end of the main shaft 6. The inner wall of the main shaft 6 is radially slidably connected with a plurality of pawls 12, and the side wall of the sleeve 7 is provided with a slot 8 that engages with the pawl 12.

[0027] A connecting rope 9 is fixed to the inner wall of the transition drive ring 11 , and the other end of the connecting rope 9 is fixed to the outer wall of the pawl 12 , and the pawl 12 is connected to the inner wall of the main shaft 6 through a spring 10 .

[0028] When the regulator is in use, the transition drive ring 11 can be rotated. In the initial state, the pawl 12 is engaged with the inner wall of the slot 8 by the elastic force of the spring 10, so that the main shaft 6 and the sleeve 7 are in a locked state. When the transition drive ring 11 is subjected to a rotational driving force, it causes one end of the connecting rope 9 to be subjected to a pulling force, so that the pawl 12 overcomes the elastic force of the spring 10 and moves in the outer circumferential direction by utilizing the pulling force of the connecting rope 9, so that the pawl 12 is separated from the slot 8, and the main shaft 6 is released from the seat bracket 1. Lock, at this time continue to rotate the transition drive ring 11 until the pawl 12 reaches the maximum movement position, the transition drive ring 11 and the main shaft 6 are in a rigid connection state along the rotation direction, the main shaft 6 can be driven to rotate by the rotation of the transition drive ring 11, thereby driving the backrest bracket 2 to rotate through the deceleration and torque increase component 4, completing the angle adjustment of the backrest bracket 2 relative to the seat bracket 1, after the adjustment is completed, the pawl 12 is again engaged in the slot 8 by the elastic force of the spring 10, so that the seat bracket 1 and the backrest bracket 2 are locked.

[0029] The device, by providing structures such as a card slot 8 and a pawl 12, utilizes the cooperation between the pawl 12 and the card slot 8 to realize whether the seat support 1 and the seat back support 2 are locked or not, so that the comprehensive operation of unlocking, adjusting and locking the seat support 1 and the seat back support 2 can be realized through a single rotation action of the transition drive ring 11, thereby increasing the convenience of operation.

[0030] To solve the stability problem; Figure 4 As shown, a damping assembly 3 is provided on the opposite side of the seat support 1 and the seat back support 2, and the damping assembly 3 includes an inner ring 13 provided on one side of the seat back support 2 and an outer ring 15 provided on one side of the seat support 1, and an elastic scroll friction member 14 is provided on the opposite side of the inner ring 13 and the outer ring 15, and the inner and outer sides of the elastic scroll friction member 14 are respectively in close contact with the outer wall of the inner ring 13 and the inner wall of the outer ring 15.

[0031] If the damping between the seat support 1 and the back support 2 is low, on the one hand, at the moment of unlocking, the transition drive ring 11 will apply torque to the main shaft 6, causing the back support 2 to rotate instantly. On the other hand, the driver and passengers are operating on the seat, which may exert a certain force on the back support 2 of the seat, causing the back support 2 to lose support at the moment of unlocking, thereby causing stability problems.

[0032] The present device, by providing a damping assembly 3, utilizes the friction force between the elastic scroll friction member 14 and the inner ring 13 and the outer ring 15 to achieve a certain damping of the rotation between the seat support 1 and the backrest support 2, thereby preventing stability and safety problems caused by the instantaneous movement of the backrest support 2 at the moment of unlocking.

[0033] In order to solve the problem of convenience; Figure 1 , Figure 6 , Figure 7 , Figure 8 As shown, the outer wall of the transition drive ring 11 is rotatably connected to the peripheral drive ring 20, the outer inner wall of the transition drive ring 11 is radially slidably connected to two groups of wedge blocks 22, and the inner inner wall of the peripheral drive ring 20 is radially slidably connected to two groups of wedge blocks 1 21 that respectively cooperate with the two groups of wedge blocks 22.

[0034] One set of wedge blocks 1 21 and wedge blocks 2 22 cooperate with each other through inclined surface 1 24 , and the other set of wedge blocks 1 21 and wedge blocks 2 22 cooperate with each other through inclined surface 25 , and the inclined surfaces 1 24 and 25 are inclined in opposite directions.

[0035] A second spring 23 is buckled on the side wall of the second wedge block 22 , and the other end of the second spring 23 is buckled on the inner wall of the transition drive ring 11 .

[0036] The inner wall of the peripheral driving ring 20 is rotatably connected with an adjusting ring 28 , and the end faces of the adjusting ring 28 are respectively provided with a group of limiting grooves 27 , and the wedge block 21 is movably limited and matched with the inner wall of the limiting groove 27 through the limiting column 26 .

[0037] The two groups of limiting grooves 27 have opposite inclination directions.

[0038] A torque increasing arm 33 is fixed to the outer wall of the peripheral driving ring 20 .

[0039] The rotational torque can be applied to the peripheral drive ring 20 by bending the torque-increasing arm 33 upward or pressing it downward. At this time, one of the wedge blocks 1 21 and the wedge block 2 22 cooperate with each other, and the other group of wedge blocks 1 21 and the wedge block 2 22 are separated from each other, so that after bending upward or pressing down to a certain angle, they move in the opposite direction. At this time, a group of wedge blocks 1 21 and the wedge block 2 22 cooperate with each other due to the action of the inclined surface 1 24 or the inclined surface 25 to form a one-way ratchet structure, so that the torque-increasing arm 33 can be used to increase the torque and the reciprocating movement of the torque-increasing arm 33 can be used to make the main shaft 6 rotate unidirectionally. When rotation on the other side is required, the adjusting ring 28 can be rotated. The rotation of the adjusting ring 28 causes the limit column 26 and the limit groove 1 27 to rotate relative to each other, so that the limit groove 1 27 uses the limiting effect of the limit column 26 to make one group of wedge blocks 1 21 move outward and the other group of wedge blocks 1 21 move inward, thereby changing the transmission direction of the one-way ratchet.

[0040] This device, by setting up structures such as the torque-increasing arm 33, can achieve the torque-increasing effect on the one hand, and at the same time can utilize the small-angle swing of the torque-increasing arm 33 to achieve intermittent large-angle adjustment of the chair back bracket 2, and can also switch the adjustment direction through the adjustment ring 28 to increase the convenience of use. Finally, its overall functions are integrated inside the "ring-shaped" structure of the peripheral drive ring 20, realizing a highly integrated modular setting and reducing volume occupancy.

[0041] like Figure 8 As shown, a guide groove 31 is provided on the inner wall of the peripheral driving ring 20, and two limit grooves 32 perpendicular to the direction of the guide groove 31 are provided at both ends of the guide groove 31, and an elastic rod 30 is fixed to the outer wall of the adjustment ring 28, and a handle 29 is fixed to the end of the elastic rod 30.

[0042] When the elastic rod 30 is engaged with one of the second limiting grooves 32, the adjustment ring 28 is locked with the peripheral drive ring 20. When the adjustment direction needs to be switched, the elastic rod 30 can be moved by the handle 29, and the elastic rod 30 is deformed and almost parallel to the guide groove 31, thereby sliding from the guide groove 31 to the other second limiting groove 32 to complete the mode switching.

[0043] When the present embodiment is in use, a rotational torque can be applied to the peripheral drive ring 20 by bending up or pressing down the torque increasing arm 33. At this time, one of the wedge blocks 1 21 and the wedge block 2 22 cooperate with each other, and the other set of wedge blocks 1 21 and the wedge block 2 22 are separated from each other, so that after bending up or pressing down to a certain angle, they move in the opposite direction. At this time, a set of wedge blocks 1 21 and the wedge block 2 22 form a one-way ratchet structure due to the action of the inclined surface 1 24 or the inclined surface 25, so that the torque increasing arm 33 can be used to increase the torque and the reciprocating movement of the torque increasing arm 33 can be used to make the main shaft 6 rotate in one direction. When another set of wedge blocks 1 21 and the wedge block 2 22 are needed, the torque increasing arm 33 can be used to increase the torque and the reciprocating movement of the torque increasing arm 33 can be used to make the main shaft 6 rotate in one direction. When rotating on the one hand, the adjusting ring 28 can be rotated, and the rotation of the adjusting ring 28 causes the limiting column 26 and the limiting groove 27 to rotate relative to each other, so that the limiting effect of the limiting groove 27 on the limiting column 26 causes one group of wedge blocks 21 to move outward and the other group of wedge blocks 21 to move inward, thereby changing the transmission direction of the one-way ratchet. The peripheral driving ring 20 is subjected to a rotating torque to drive the rotating transition driving ring 11. In the initial state, the pawl 12 is engaged with the inner wall of the slot 8 by the elastic force of the spring 10, so that the main shaft 6 and the sleeve 7 are in a locked state. When the transition drive ring 11 is subjected to a rotational driving force, it causes one end of the connecting rope 9 to be subjected to a pulling force, so that the pulling force of the connecting rope 9 causes the pawl 12 to overcome the elastic force of the spring 10 and move in the outer circumferential direction, so that the pawl 12 is separated from the card slot 8, and the spindle 6 and the seat support 1 are unlocked. At this time, the transition drive ring 11 continues to be rotated until the pawl 12 reaches the maximum movement position. The transition drive ring 11 and the spindle 6 are in a rigid connection state along the rotation direction, and the spindle 6 can be driven to rotate by the rotation of the transition drive ring 11, thereby driving the seat back support 1 through the deceleration torque increasing component 4. The frame 2 rotates to complete the angle adjustment of the chair back support 2 relative to the seat support 1. After the adjustment is completed, the pawl 12 is again engaged with the slot 8 by the elastic force of the spring 10, so that the seat support 1 and the chair back support 2 are locked, and when the elastic rod 30 is engaged with the inside of one of the limit slots 2 32, the adjustment ring 28 is locked with the peripheral drive ring 20. When it is necessary to switch the adjustment direction, the elastic rod 30 can be moved by the handle 29, and the elastic rod 30 is deformed and almost parallel to the guide slot 31, thereby sliding from the guide slot 31 to the other limit slot 2 32 to complete the mode switching. Embodiment 2:

[0044] A car seat recliner structure, such as Figure 5 As shown, in order to solve the torque increase problem; this embodiment makes the following improvements on the basis of embodiment 1: the deceleration and torque increase component 4 includes a sun gear 16, an outer ring gear 17 and a plurality of planetary gears 19 meshing on the opposite side of the sun gear 16 and the outer ring gear 17, the planetary gear 19 is rotatably connected to the side wall of the seat support 1 through the planetary shaft 18, the outer ring gear 17 is fixed to the side wall of the seat back support 2, and the sun gear 16 is fixed to the outer wall of the main shaft 6.

[0045] In this embodiment, by providing components such as the sun gear 16, the outer ring gear 17, and the planetary gear 19, when the main shaft 6 rotates, the seat back bracket 2 can be rotated through the transmission of the sun gear 16, the planetary gear 19, and the outer ring gear 17, thereby achieving the function of reducing speed and increasing torque, further increasing the convenience of adjustment.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A car seat recliner structure, comprising a main shaft (6) for rotatably connecting a seat support (1) and a seat back support (2), characterized in that: The main shaft (6) is rotatably connected to the seat support (1), and the main shaft (6) is transmission-connected to the seat back support (2) via a speed reduction torque increasing component (4); the outer wall of the main shaft (6) is provided with a bidirectional self-locking drive mechanism (5) for rotationally driving the main shaft (6); The bidirectional self-locking drive mechanism (5) comprises a sleeve (7) fixed to the side wall of the seat support (1) and a transition drive ring (11) rotatably connected to the outer wall of the end of the main shaft (6); a plurality of ratchets (12) are radially slidably connected to the inner wall of the main shaft (6); and a slot (8) is provided on the side wall of the sleeve (7) for engaging with the ratchets (12); A connecting rope (9) is fixed to the inner wall of the transition drive ring (11), the other end of the connecting rope (9) is fixed to the outer wall of the pawl (12), and the pawl (12) is connected to the inner wall of the main shaft (6) via a spring 1 (10).

2. The car seat recliner structure according to claim 1, characterized in that: A damping assembly (3) is arranged on the opposite side of the seat support (1) and the seat back support (2), and the damping assembly (3) comprises an inner ring (13) arranged on one side of the seat back support (2) and an outer ring (15) arranged on one side of the seat support (1). An elastic scroll friction member (14) is arranged on the opposite side of the inner ring (13) and the outer ring (15), and the inner side and the outer side of the elastic scroll friction member (14) are respectively in close contact with the outer wall of the inner ring (13) and the inner wall of the outer ring (15).

3. The car seat recliner structure according to claim 1, characterized in that: The outer wall of the transition drive ring (11) is rotatably connected to the peripheral drive ring (20), the outer inner wall of the transition drive ring (11) is radially slidably connected to two groups of wedge blocks 2 (22), the inner inner wall of the peripheral drive ring (20) is radially slidably connected to two groups of wedge blocks 1 (21) respectively matched with the two groups of wedge blocks 2 (22), the side wall of the wedge block 2 (22) is buckled with a spring 2 (23), and the other end of the spring 2 (23) is buckled to the inner wall of the transition drive ring (11).

4. The car seat recliner structure according to claim 3, characterized in that: One set of wedge blocks 1 (21) and wedge blocks 2 (22) cooperate with each other via inclined surface 1 (24), and the other set of wedge blocks 1 (21) and wedge blocks 2 (22) cooperate with each other via inclined surface 2 (25), and the inclined surfaces 1 (24) and 2 (25) are inclined in opposite directions.

5. The car seat recliner structure according to claim 4, characterized in that: The inner wall of the peripheral driving ring (20) is rotatably connected to an adjusting ring (28), and the end faces of the adjusting ring (28) are respectively provided with a group of limiting grooves (27). The wedge block (21) is movably limited and engaged with the inner wall of the limiting groove (27) through a limiting column (26).

6. The car seat recliner structure according to claim 5, characterized in that: The two groups of limiting grooves 1 (27) have opposite inclination directions.

7. The car seat recliner structure according to claim 5, characterized in that: A torque increasing arm (33) is fixed to the outer wall of the peripheral driving ring (20).

8. The car seat recliner structure according to claim 7, characterized in that: The inner wall of the peripheral driving ring (20) is provided with a guide groove (31), two ends of the guide groove (31) are provided with second limit grooves (32) perpendicular to the direction of the guide groove (31), and an elastic rod (30) is fixed to the outer wall of the adjustment ring (28).

9. The car seat recliner structure according to claim 8, characterized in that: A handle (29) is fixed to the end of the elastic rod (30).

10. The car seat recliner structure according to claim 1, characterized in that: The deceleration and torque-increasing assembly (4) comprises a sun gear (16), an outer gear ring (17) and a plurality of planetary gears (19) meshed with the sun gear (16) and the outer gear ring (17) on opposite sides thereof; the planetary gears (19) are rotatably connected to the side wall of the seat support (1) via planetary shafts (18); the outer gear ring (17) is fixed to the side wall of the seat back support (2); and the sun gear (16) is fixed to the outer wall of the main shaft (6).

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