CN215621529U

CN215621529U - Automobile seat

Info

Publication number: CN215621529U
Application number: CN202121997682.XU
Authority: CN
Inventors: 毛明光
Original assignee: Ningbo Mingwang Automobile Decorations Co ltd
Current assignee: Ningbo Mingwang Automobile Decorations Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-01-25
Anticipated expiration: 2031-08-24

Abstract

The utility model discloses an automobile seat which comprises a seat frame, a seat cushion assembly, a backrest support and a guy cable, wherein the seat cushion assembly is connected to the front side of the upper end of the seat frame through an inclination angle adjusting mechanism; the utility model not only can simplify the structure of the automobile seat and improve the production and assembly efficiency of the automobile seat, but also can reduce the production cost of the automobile seat.

Description

Automobile seat

Technical Field

The utility model relates to the technical field of automobile parts, in particular to an automobile seat.

Background

When a driver and passengers need to adjust the inclination angle of the cushion assembly, one control handle mechanism on the automobile seat needs to be operated to drive the inclination angle adjusting mechanism so as to enable the inclination angle adjusting mechanism to release the locking state of the cushion assembly, the cushion assembly can be adjusted after being unlocked, the control handle mechanism is released after the inclination angle adjustment of the cushion assembly is finished, so that the inclination angle adjusting mechanism locks the cushion assembly again, and similarly, when the driver and passengers need to adjust the angle of the backrest assembly, the other control handle mechanism on the automobile seat needs to be operated to drive the angle adjusting mechanism so as to enable the angle adjusting mechanism to release the locking state of the backrest assembly, and the backrest assembly is unlocked, the angle of the backrest component can be adjusted, and after the angle of the backrest component is adjusted, the control handle mechanism is released, so that the angle adjusting mechanism locks the backrest component again; because in the process of adjusting the inclination angle of the cushion assembly and the angle of the backrest assembly, two independent control handle mechanisms are required to unlock the cushion assembly and the backrest assembly respectively, the defects of complex structure and troublesome production and assembly of the automobile seat exist, and the defect of high production cost of the automobile seat exists because the two independent control handle mechanisms are required to be adopted.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the automobile seat, the driving piece in the automobile seat can respectively unlock the cushion component and the backrest bracket through rotation in two directions, and thus, only a control handle mechanism consisting of one driving piece is needed on the automobile seat, so that the structure of the automobile seat can be simplified, the production and assembly efficiency of the automobile seat is improved, and the production cost of the automobile seat can be reduced.

The utility model relates to an automobile seat, which comprises a seat frame, a cushion component, a backrest support and a guy cable, wherein the cushion component is connected to the front side of the upper end of the seat frame through an inclination angle adjusting mechanism, the backrest support is connected to the rear side of the upper end of the seat frame through an angle adjusting mechanism, one end of an outer sleeve in the guy cable is connected with a shell in the inclination angle adjusting mechanism, one end of a traction wire in the guy cable is connected with an operation end in the inclination angle adjusting mechanism, a transmission mechanism is installed on the seat frame, a driving piece for driving the transmission mechanism is rotatably connected on the seat frame, a control end in the angle adjusting mechanism is in transmission connection with a first output end of the transmission mechanism, the other end of the outer sleeve in the guy cable is connected with the seat frame, the other end of the traction wire in the guy cable is connected with a second output end of the transmission mechanism, and when the driving piece rotates towards one side, the second output end of the transmission mechanism is used for drawing the traction wire to enable the inclination angle adjusting mechanism to release the locking of the cushion component, when the driving piece rotates towards the other side, the first output end of the transmission mechanism is used for driving the control end in the angle adjusting mechanism to rotate so that the angle adjusting mechanism unlocks the backrest support.

The automobile seat comprises a transmission mechanism, a seat frame, a seat cushion, a first rotating frame, a second rotating frame, a first tensioning structure and a second tensioning structure, wherein a support shaft is fixed on the side wall of the seat frame; the driving part comprises a rotating part and a handle part, the handle part is connected to one side of the rotating part, the rotating part is sleeved on the support shaft positioned on the outer side of the second rotating frame and is in rotating connection with the support shaft, an inserting rod is connected to the inner side wall of the rotating part, the axis of the inserting rod is parallel to the axis of the support shaft, and the inserting rod and the support shaft are eccentrically arranged; the middle part of the first rotating frame is provided with a kidney-shaped hole for the insertion rod to insert and for the insertion rod to slide when the driving piece rotates towards one side, and the rear side of the second rotating frame is abutted against the insertion rod; the upper end of the first rotating frame is provided with a push rod, and when the driving piece rotates towards the other side, the push rod is used for pushing and driving a control end in the angle adjusting mechanism to rotate so as to enable the angle adjusting mechanism to unlock the backrest bracket; one end of the first tensioning structure is connected with the seat frame, the other end of the first tensioning structure is connected with the first rotating frame, and when the driving piece is released, the first tensioning structure is used for driving the first rotating frame to rotate and reset so that the first rotating frame releases the pushing of the control end and the push rod is abutted against the rear side of the second rotating frame; one end of the second tensioning structure is connected with the upper end of the second rotating frame, the other end of the second tensioning structure is connected with the seat frame, when the driving piece is released, the second tensioning structure is used for driving the second rotating frame to rotate and reset so that the second rotating frame can release traction on the traction line, a limiting block which is used for abutting against the upper end of the second rotating frame to limit the rotating range of the second rotating frame when the second tensioning structure drives the second rotating frame to rotate and reset is arranged on the side wall of the seat frame, and the tensioning force of the second tensioning structure is greater than that of the first tensioning structure; by adopting the transmission mechanism and the driving piece, when the handle part is pulled to enable the driving piece to rotate towards one side (anticlockwise), the inserted rod connected on the rotating part can push the second rotating frame to rotate, at the moment, the upper end of the second rotating frame can pull the other end of the traction line, when the other end of the traction line is pulled, the traction line can pull the control end of the inclination angle adjusting mechanism, at the moment, the inclination angle adjusting mechanism can release the locking of the cushion assembly, so that the cushion assembly can rotate relative to the seat frame under the adjustment of a driver and passengers, namely, the adjustment of the inclination angle of the cushion assembly is realized, when the handle part is released, the upper end of the second rotating frame can rotate to reset under the action of the second tensioning structure, at the moment, the second rotating frame can release the pulling state of the traction line, and thus, the inclination angle adjusting mechanism positioned in the automobile seat can lock the cushion assembly again, the locking of the cushion assembly after the inclination angle is adjusted is realized; when the handle part is pulled to enable the driving part to rotate towards the other side (clockwise), the inserted link connected to the rotating part can push the first rotating frame to rotate, at the moment, the push rod positioned on the first rotating frame can push the control end in the angle adjusting mechanism to rotate, after the control end in the angle adjusting mechanism rotates, the angle adjusting mechanism can release the locking of the backrest support, so that the backrest support can rotate relative to the seat frame under the adjustment of a driver and passengers, namely, the adjustment of the angles of the backrest support and a backrest assembly positioned on the backrest support is realized, when the handle part is released, the first rotating frame can rotate to reset under the action of the first tensioning structure, at the moment, the push rod positioned on the first rotating frame can release the pushing effect of the control end in the angle adjusting mechanism, namely, the control end in the angle adjusting mechanism can reset by means of the resetting structure inside the angle adjusting mechanism, after the control end of the angle adjusting mechanism is reset, the angle adjusting mechanism can lock the backrest bracket and the backrest component positioned on the backrest bracket again, namely the backrest bracket and the backrest component after angle adjustment are locked; after the tension force of the second tension structure is set to be larger than that of the first tension structure, the phenomenon that the second rotating frame is pulled to rotate by the first tension structure under the non-human factor condition can be avoided, namely the phenomenon that the other end of the traction wire in the inhaul cable is pulled accidentally to cause the inclination angle adjusting mechanism to unlock the cushion assembly accidentally can be avoided; through the setting of stopper, can avoid the second rotating frame to appear excessively promoting first rotating frame pivoted phenomenon under the effect of second tension structure, can avoid appearing the phenomenon that the push rod promoted angle adjustment mechanism's control end under non-human factor promptly, can avoid angle adjustment mechanism to appear the phenomenon of unexpected unblock back support promptly.

According to the automobile seat, the seat frame is provided with the clamping groove, and the other end of the outer sleeve in the inhaul cable is matched and clamped with the clamping groove; by adopting such a structure, the other end of the outer tube in the cable can be reliably connected to the seat frame.

According to the automobile seat, the upper end of the second rotating frame is provided with the slot, and the other end of the traction wire in the inhaul cable is in matched insertion with the slot; by adopting the structure, the other end of the traction wire in the traction cable can be reliably connected with the second rotating frame.

The automobile seat comprises a seat frame, a first tensioning structure, a second tensioning structure and a first rotating frame, wherein the first tensioning structure comprises a first tension spring, one end of the first tension spring is hooked with the seat frame, and the other end of the first tension spring is hooked with the first rotating frame; through adopting first extension spring as first tensioning texture after, have simple structure and advantage with low costs, in addition, still have first tensioning texture simple to operate's advantage.

According to the automobile seat, the second tensioning structure comprises a second tension spring, one end of the second tension spring is hooked with the upper end of the second rotating frame, and the other end of the second tension spring is hooked with the seat frame; after the second tension spring is used as the second tensioning structure, the tensioning device has the advantages of simple structure and low cost, and in addition, the tensioning device also has the advantage of convenience in assembly of the second tensioning structure.

The automobile seat comprises a rotating part, a supporting shaft, a bolt and a locking mechanism, wherein the rotating part is provided with a supporting shaft hole for inserting the supporting shaft so as to enable the rotating part and the supporting shaft to be rotatably connected; by adopting such a structure, the rotating portion can be reliably rotatably coupled to the support shaft.

The automobile seat of the utility model, wherein, the outer end of the rotating part is provided with a blocking cover used for blocking the supporting shaft and the bolt positioned on the supporting shaft; through the setting of keeping off the lid, the back shaft can be sheltered from to the fender lid, so, can avoid the back shaft to expose outside to pleasing to the eye degree has been improved.

According to the automobile seat, the edge of one side, facing the rotating part, of the blocking cover is provided with the plurality of clamping hooks which are distributed in the circumferential direction, the rotating part is provided with the clamping holes which correspond to the clamping hooks one to one, and each clamping hook penetrates through the clamping hole in the corresponding position and then is matched and clamped with the rotating part at the edge of the clamping hole; by adopting such a structure, the shield cover can be easily assembled with the rotary portion.

According to the automobile seat, the side wall of the seat frame is fixedly provided with the decoration frame, the decoration frame is internally provided with the through hole for the support shaft to pass through, and the decoration frame is internally provided with the arc-shaped hole for the insertion rod to pass through and slide; through the setting of dress escutcheon, dress escutcheon can play the effect of decoration to the seat frame, through the setting in arc hole, when the rotating part drives the inserted bar and rotates, the arc hole can play the effect of keeping away the sky.

The driving piece in the automobile seat can respectively unlock the cushion component and the backrest bracket through rotation in two directions, and thus, only a control handle mechanism formed by one driving piece is needed on the automobile seat, so that the structure of the automobile seat can be simplified, the production and assembly efficiency of the automobile seat can be improved, and the production cost of the automobile seat can be reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a partially exploded perspective view of the present invention;

FIG. 3 is a schematic perspective view of the present invention with portions broken away;

FIG. 4 is another perspective view of the present invention with portions broken away;

fig. 5 is a partially exploded view of the driving member.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the utility model. That is, in some embodiments of the utility model, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model relates to an automobile seat, which comprises a seat frame 1, a seat cushion component 2, a backrest support 3 and a guy cable 4, wherein the seat cushion component 2 is connected to the front side of the upper end of the seat frame 1 through an inclination angle adjusting mechanism, the backrest support 3 is connected to the rear side of the upper end of the seat frame 1 through an angle adjusting mechanism, one end of an outer sleeve 41 in the guy cable 4 is connected with a shell in the inclination angle adjusting mechanism, one end of a traction wire 42 in the guy cable 4 is connected with an operation end in the inclination angle adjusting mechanism, a transmission mechanism is installed on the seat frame 1, a driving part 5 for driving the transmission mechanism is rotatably connected on the seat frame 1, a control end 6 in the angle adjusting mechanism is in transmission connection with a first output end of the transmission mechanism, the other end of the outer sleeve 41 in the guy cable 4 is connected with the seat frame 1, the other end of the traction wire 42 in the guy cable 4 is connected with a second output end of the transmission mechanism, when the driving part 5 rotates towards one side, the second output end of the transmission mechanism is used for pulling the traction wire 42 to enable the inclination angle adjusting mechanism to unlock the cushion assembly 2, and when the driving piece 5 rotates towards the other side, the first output end of the transmission mechanism is used for driving the control end 6 in the angle adjusting mechanism to rotate to enable the angle adjusting mechanism to unlock the backrest support 3.

The transmission mechanism comprises a first rotating frame 71, a second rotating frame 72, a first tensioning structure and a second tensioning structure, a support shaft 11 is fixed on the side wall of the seat frame 1, the lower end of the first rotating frame 71 and the lower end of the second rotating frame 72 are sequentially sleeved outside the support shaft 11 from inside to outside and are rotatably connected with the support shaft 11, a first output end of the transmission mechanism is formed at the upper end of the first rotating frame 71, and a second output end of the transmission mechanism is formed at the upper end of the second rotating frame 72; the driving member 5 comprises a rotating portion 51 and a handle portion 52, the handle portion 52 is connected to one side of the rotating portion 51, the rotating portion 51 is sleeved on the support shaft 11 positioned outside the second rotating frame 72 and is rotatably connected with the support shaft 11, an inserting rod 53 is connected to the inner side wall of the rotating portion 51, the axis of the inserting rod 53 is parallel to the axis of the support shaft 11, and the inserting rod 53 and the support shaft 11 are eccentrically arranged; the middle part of the first rotating frame 71 is provided with a waist-shaped hole 711 for inserting the insertion rod 53 and for sliding the insertion rod 53 when the driving piece 5 rotates towards one side, and the rear side of the second rotating frame 72 abuts against the insertion rod 53; a push rod 712 is arranged at the upper end of the first rotating frame 71, and when the driving piece 5 rotates towards the other side, the push rod 712 is used for pushing and driving the control end 6 in the angle adjusting mechanism to rotate so as to enable the angle adjusting mechanism to release the locking of the backrest bracket 3; one end of the first tensioning structure is connected with the seat frame 1, the other end of the first tensioning structure is connected with the first rotating frame 71, and when the driving piece 5 is released, the first tensioning structure is used for driving the first rotating frame 71 to rotate and reset so that the first rotating frame 71 releases the pushing of the control end 6 and the push rod 712 abuts against the rear side of the second rotating frame 72; one end of the second tensioning structure is connected with the upper end of the second rotating frame 72, the other end of the second tensioning structure is connected with the seat frame 1, when the driving piece 5 is released, the second tensioning structure is used for driving the second rotating frame 72 to rotate and reset so that the second rotating frame 72 releases traction on the traction wire 42, a limiting block 12 which is used for abutting against the upper end of the second rotating frame 72 to limit the rotating range of the second rotating frame 72 when the second tensioning structure drives the second rotating frame 72 to rotate and reset is arranged on the side wall of the seat frame 1, and the tensioning force of the second tensioning structure is larger than that of the first tensioning structure; by adopting the transmission mechanism and the driving piece, when the handle part is pulled to enable the driving piece to rotate towards one side (anticlockwise), the inserted rod connected on the rotating part can push the second rotating frame to rotate, at the moment, the upper end of the second rotating frame can pull the other end of the traction line, when the other end of the traction line is pulled, the traction line can pull the control end of the inclination angle adjusting mechanism, at the moment, the inclination angle adjusting mechanism can release the locking of the cushion assembly, so that the cushion assembly can rotate relative to the seat frame under the adjustment of a driver and passengers, namely, the adjustment of the inclination angle of the cushion assembly is realized, when the handle part is released, the upper end of the second rotating frame can rotate to reset under the action of the second tensioning structure, at the moment, the second rotating frame can release the pulling state of the traction line, and thus, the inclination angle adjusting mechanism positioned in the automobile seat can lock the cushion assembly again, the locking of the cushion assembly after the inclination angle is adjusted is realized; when the handle part is pulled to enable the driving part to rotate towards the other side (clockwise), the inserted link connected to the rotating part can push the first rotating frame to rotate, at the moment, the push rod positioned on the first rotating frame can push the control end in the angle adjusting mechanism to rotate, after the control end in the angle adjusting mechanism rotates, the angle adjusting mechanism can release the locking of the backrest support, so that the backrest support can rotate relative to the seat frame under the adjustment of a driver and passengers, namely, the adjustment of the angles of the backrest support and a backrest assembly positioned on the backrest support is realized, when the handle part is released, the first rotating frame can rotate to reset under the action of the first tensioning structure, at the moment, the push rod positioned on the first rotating frame can release the pushing effect of the control end in the angle adjusting mechanism, namely, the control end in the angle adjusting mechanism can reset by means of the resetting structure inside the angle adjusting mechanism, after the control end of the angle adjusting mechanism is reset, the angle adjusting mechanism can lock the backrest bracket and the backrest component positioned on the backrest bracket again, namely the backrest bracket and the backrest component after angle adjustment are locked; after the tension force of the second tension structure is set to be larger than that of the first tension structure, the phenomenon that the second rotating frame is pulled to rotate by the first tension structure under the non-human factor condition can be avoided, namely the phenomenon that the other end of the traction wire in the inhaul cable is pulled accidentally to cause the inclination angle adjusting mechanism to unlock the cushion assembly accidentally can be avoided; through the setting of stopper, can avoid the second rotating frame to appear excessively promoting first rotating frame pivoted phenomenon under the effect of second tension structure, can avoid appearing the phenomenon that the push rod promoted angle adjustment mechanism's control end under non-human factor promptly, can avoid angle adjustment mechanism to appear the phenomenon of unexpected unblock back support promptly.

The seat frame 1 is provided with a clamping groove 13, and the other end of the outer sleeve 41 in the inhaul cable 4 is matched and clamped with the clamping groove 13; by adopting such a structure, the other end of the outer tube in the cable can be reliably connected to the seat frame.

The upper end of the second rotating frame 72 is provided with a slot 721, and the other end of the traction wire 42 in the inhaul cable 4 is matched and inserted with the slot 721; by adopting the structure, the other end of the traction wire in the traction cable can be reliably connected with the second rotating frame.

The first tensioning structure comprises a first tension spring 73, one end of the first tension spring 73 is hooked with the seat frame 1, and the other end of the first tension spring 73 is hooked with the first rotating frame 71; through adopting first extension spring as first tensioning texture after, have simple structure and advantage with low costs, in addition, still have first tensioning texture simple to operate's advantage.

The second tensioning structure comprises a second tension spring 74, one end of the second tension spring 74 is hooked with the upper end of the second rotating frame 72, and the other end of the second tension spring 74 is hooked with the seat frame 1; after the second tension spring is used as the second tensioning structure, the tensioning device has the advantages of simple structure and low cost, and in addition, the tensioning device also has the advantage of convenience in assembly of the second tensioning structure.

A shaft hole 511 for inserting the support shaft 11 to rotatably connect the rotary part 51 and the support shaft 11 is formed in the middle of the rotary part 51, and after the rotary part 51 and the support shaft 11 are rotatably connected, a bolt for blocking the rotary part 51 to prevent the rotary part 51 from being separated from the support shaft 11 is screwed on the outer end part of the support shaft 11; by adopting such a structure, the rotating portion can be reliably rotatably coupled to the support shaft.

A shield cover 54 for shielding the support shaft 11 and the bolt on the support shaft 11 is mounted on the outer end portion of the rotating portion 51; through the setting of keeping off the lid, the back shaft can be sheltered from to the fender lid, so, can avoid the back shaft to expose outside to pleasing to the eye degree has been improved.

A plurality of hooks 541 which are distributed circumferentially are arranged at the edge of one side of the blocking cover 54 facing the rotating part 51, the rotating part 51 is provided with clamping holes 512 which are in one-to-one correspondence with the hooks 541, and each hook 541 passes through the clamping hole 512 at the corresponding position and then is matched and clamped with the rotating part 51 at the edge of the clamping hole 512; by adopting such a structure, the shield cover can be easily assembled with the rotary portion.

A decorative frame 8 is fixed on the side wall of the seat frame 1, a through hole 81 for the support shaft 11 to pass through is arranged in the decorative frame 8, and an arc-shaped hole 82 for the insertion rod 53 to pass through and slide is arranged in the decorative frame 8; through the setting of dress escutcheon, dress escutcheon can play the effect of decoration to the seat frame, through the setting in arc hole, when the rotating part drives the inserted bar and rotates, the arc hole can play the effect of keeping away the sky.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An automobile seat comprises a seat frame (1), a seat cushion component (2), a backrest support (3) and a pull cable (4), wherein the seat cushion component (2) is connected to the front side of the upper end of the seat frame (1) through an inclination angle adjusting mechanism, the backrest support (3) is connected to the rear side of the upper end of the seat frame (1) through an angle adjusting mechanism, one end of an outer sleeve (41) in the pull cable (4) is connected with a shell in the inclination angle adjusting mechanism, one end of a traction wire (42) in the pull cable (4) is connected with an operation end in the inclination angle adjusting mechanism, and the automobile seat is characterized in that: the seat frame (1) is provided with a transmission mechanism, the seat frame (1) is rotatably connected with a driving part (5) for driving the transmission mechanism, a control end (6) in the angle adjusting mechanism is in transmission connection with a first output end of the transmission mechanism, the other end of an outer sleeve (41) in the inhaul cable (4) is connected with the seat frame (1), the other end of a traction wire (42) in the inhaul cable (4) is connected with a second output end of the transmission mechanism, when the driving piece (5) rotates towards one side, the second output end of the transmission mechanism is used for pulling the traction wire (42) to enable the inclination angle adjusting mechanism to unlock the cushion assembly (2), when the driving piece (5) rotates towards the other side, the first output end of the transmission mechanism is used for driving the control end (6) in the angle adjusting mechanism to rotate so that the angle adjusting mechanism unlocks the backrest support (3).

2. The car seat according to claim 1, characterized in that the transmission mechanism comprises a first rotating frame (71), a second rotating frame (72), a first tensioning structure and a second tensioning structure, a support shaft (11) is fixed on a side wall of the seat frame (1), a lower end of the first rotating frame (71) and a lower end of the second rotating frame (72) are sequentially sleeved outside the support shaft (11) from inside to outside and are rotatably connected with the support shaft (11), an upper end of the first rotating frame (71) forms a first output end of the transmission mechanism, and an upper end of the second rotating frame (72) forms a second output end of the transmission mechanism; the driving part (5) comprises a rotating part (51) and a handle part (52), the handle part (52) is connected to one side of the rotating part (51), the rotating part (51) is sleeved on the support shaft (11) positioned on the outer side of the second rotating frame (72) and is in rotating connection with the support shaft (11), an inserting rod (53) is connected to the inner side wall of the rotating part (51), the axis of the inserting rod (53) is parallel to the axis of the support shaft (11), and the inserting rod (53) and the support shaft (11) are eccentrically arranged; the middle part of the first rotating frame (71) is provided with a waist-shaped hole (711) which is used for inserting the insertion rod (53) and for sliding the insertion rod (53) when the driving piece (5) rotates towards one side, and the rear side of the second rotating frame (72) is abutted against the insertion rod (53); a push rod (712) is arranged at the upper end of the first rotating frame (71), and when the driving piece (5) rotates towards the other side, the push rod (712) is used for pushing and driving a control end (6) in the angle adjusting mechanism to rotate so as to enable the angle adjusting mechanism to release the locking of the backrest bracket (3); one end of the first tensioning structure is connected with the seat frame (1), the other end of the first tensioning structure is connected with the first rotating frame (71), and when the driving piece (5) is released, the first tensioning structure is used for driving the first rotating frame (71) to rotate and reset so that the first rotating frame (71) releases the pushing of the control end (6) and the push rod (712) abuts against the rear side of the second rotating frame (72); one end of the second tensioning structure is connected with the upper end of the second rotating frame (72), the other end of the second tensioning structure is connected with the seat frame (1), when the driving piece (5) is released, the second tensioning structure is used for driving the second rotating frame (72) to rotate and reset so that the second rotating frame (72) can release the traction of the traction wire (42), a limiting block (12) which is used for abutting against the upper end of the second rotating frame (72) to limit the rotating range of the second rotating frame (72) when the second tensioning structure drives the second rotating frame (72) to rotate and reset is arranged on the side wall of the seat frame (1), and the tensioning force of the second tensioning structure is larger than that of the first tensioning structure.

3. The vehicle seat according to claim 2, characterized in that a clamping groove (13) is arranged on the seat frame (1), and the other end of the outer sleeve (41) in the pulling cable (4) is matched and clamped with the clamping groove (13).

4. The car seat according to claim 2, characterized in that the upper end of the second rotating frame (72) is provided with a slot (721), and the other end of the traction wire (42) in the traction cable (4) is inserted in the slot (721).

5. The car seat according to claim 2, characterized in that the first tensioning structure comprises a first tension spring (73), one end of the first tension spring (73) being hooked with the seat frame (1), the other end of the first tension spring (73) being hooked with the first turning frame (71).

6. The car seat according to claim 2, characterized in that the second tensioning structure comprises a second tension spring (74), one end of the second tension spring (74) is hooked with the upper end of the second rotating frame (72), and the other end of the second tension spring (74) is hooked with the seat frame (1).

7. The car seat according to claim 2, wherein a shaft hole (511) for inserting the support shaft (11) to rotatably connect the rotation portion (51) and the support shaft (11) is provided at a middle portion of the rotation portion (51), and a bolt for blocking the rotation portion (51) from being separated from the support shaft (11) is threadedly coupled to an outer end portion of the support shaft (11) after the rotation portion (51) and the support shaft (11) are rotatably connected.

8. The vehicle seat according to claim 7, wherein a shield cover (54) for shielding the support shaft (11) and a bolt on the support shaft (11) is mounted on an outer end portion of the rotating portion (51).

9. The car seat according to claim 8, characterized in that a plurality of hooks (541) are circumferentially distributed at an edge of one side of the cover (54) facing the rotating portion (51), the rotating portion (51) is provided with locking holes (512) corresponding to the hooks (541) one by one, and each hook (541) passes through the locking hole (512) at the corresponding position and then is in fit and locking connection with the rotating portion (51) at the edge of the locking hole (512).

10. The vehicle seat according to claim 2, wherein a decorative frame (8) is fixed on the side wall of the seat frame (1), a through hole (81) for passing the support shaft (11) is arranged in the decorative frame (8), and an arc-shaped hole (82) for passing and sliding the insert rod (53) is arranged in the decorative frame (8).