Automobile seat with back-row seat putting-down mechanism

Abstract

The utility model relates to an automobile seat with a back-row seat putting-down mechanism, which comprises an extension backrest framework arranged on a seat backrest framework in a folding manner, a foot margin supporting mechanism arranged below the extension backrest framework and / or the seat backrest framework, and a cushion lifting mechanism, the top of the seat backrest framework is rotationally connected with the extending backrest framework, the bottom of the seat backrest framework is rotationally connected to the cushion framework assembly through an angle adjuster, and an angle adjuster lower connecting plate is installed at the position, close to the angle adjuster, of the bottom of the seat backrest framework. The angle adjuster lower connecting plate is connected with the cushion lifting mechanism and drives the cushion to lift; the utility model has the advantages that the backrest framework is unfolded backwards, and the upper surface of the unfolded backrest framework is covered by the skin, so that the comfort is higher, and an air cushion bed can be omitted.

Description

Technical Field

[0001] The utility model relates to the technical field of rear-row seats for automobiles, in particular to an automobile seat with a rear-row seat folding mechanism. Background Art

[0002] Today's drivers are increasingly demanding vehicle space and a more comfortable ride. Rapid economic development and the increasingly fast-paced pace of urban life have fueled the rise of the tourism economy, fostering a desire for spontaneous travel and a sense of relaxation. To meet these needs, many automakers have introduced fold-down rear seats. However, some models suffer from uneven surfaces and insufficient support when folded, requiring the use of inflatable cushions for comfort. Utility Model Content

[0003] In view of the above problems, the purpose of the present utility model is to provide a car seat with a rear seat folding mechanism, which is used to unfold the backrest frame backward. After unfolding, the upper surface is covered with leather. After the seat is folded down, it has better support capacity and a better lying experience, so as to overcome the shortcomings of the above-mentioned existing technology.

[0004] The utility model provides a car seat with a rear seat folding mechanism, comprising: an extension backrest frame foldably arranged on a seat backrest frame, a ground support mechanism arranged below the extension backrest frame and / or the seat backrest frame, and a seat cushion lifting mechanism, wherein the top of the seat backrest frame is rotatably connected to the extension backrest frame, and the bottom of the seat backrest frame is rotatably connected to the seat cushion frame assembly via a recliner. A recliner lower connecting plate is installed at the bottom of the seat back frame near the recliner, and the recliner lower connecting plate is connected to the seat cushion lifting mechanism and drives the seat cushion to rise and fall.

[0005] The seat cushion lifting mechanism is used to automatically adjust the seat cushion frame to be flush with the seat back frame after folding down, and the foot support mechanism is used to automatically unfold and support the seat back frame after folding down and / or the extended back frame after folding down;

[0006] An extension backrest lock and an extension backrest retraction strap are provided between the extension backrest frame and the seat backrest frame, the extension backrest lock is used to lock the free end of the extension backrest frame to the seat backrest frame, and the extension backrest retraction strap is used to pull the extension backrest frame to be folded to a folded state;

[0007] An extension backrest coil spring is mounted on the hinge shaft connecting the seat back frame and the extension backrest frame, and the extension backrest coil spring is used to assist the extension backrest frame in unfolding;

[0008] A support backrest spring (a structure for manually adjusting the angle adjuster) is sleeved on the angle adjuster rotating shaft where the seat backrest frame is connected to the angle adjuster, or an angle adjustment driving motor (a structure for electrically adjusting the angle adjuster) for driving the rotation of the angle adjuster rotating shaft is provided. The support backrest spring and the angle adjustment driving motor are used to lift the seat backrest frame after being laid down to the initial position.

[0009] As a preference of the present utility model, the floor support mechanism includes: a main support arm, a first driven support arm, a second driven support arm, a third driven support arm, an intermediate leg, and a rear leg. The intermediate leg is hinged at a position near the top of the seat backrest frame, the rear leg is hinged at the bottom position of the extended backrest frame. One end of the main support arm is hinged to the rear leg, and the other end is hinged to the first driven support arm. One end of the first driven support arm is hinged at the bottom position of the extended backrest frame, and the other end is hinged to one end of the second driven support arm. The other end of the second driven support arm is hinged to one end of the third driven support arm. The other end of the third driven support arm is hinged to the intermediate leg. During the unfolding process of the extended backrest frame and the seat backrest frame, the main support arm is driven. The main support arm drives the rear leg to unfold and stand upright and drives the first driven support arm. The first driven support arm drives the second driven support arm. The second driven support arm drives the third driven support arm. The third driven support arm drives the intermediate leg to unfold and stand upright.

[0010] As a preference of the present utility model, the seat cushion lifting mechanism includes: a movable seat cushion frame. The rear end of the movable seat cushion frame is hinged on a seat cushion adjustment rotating shaft on the lower connecting plate of the angle adjuster. The front end of the movable seat cushion frame is fixedly connected with a sliding rotating shaft. A strip-shaped sliding hole is formed on a seat cushion fixing seat below the movable seat cushion frame. The sliding rotating shaft of the movable seat cushion frame is slidably connected in the strip-shaped sliding hole of the seat cushion fixing seat. During the process of the seat backrest frame being laid down backward, the lower end of the lower connecting plate of the angle adjuster is driven to rotate forward around the angle adjuster rotating shaft. The seat cushion adjustment rotating shaft on the lower connecting plate of the angle adjuster drives the rear end of the movable seat cushion frame to lift upward and be flush with the seat backrest frame after being laid down. At the same time, the front end of the movable seat cushion frame moves forward on the seat cushion fixing seat through the sliding rotating shaft, so that the movable seat cushion frame is flush with the seat backrest frame after being laid down.

[0011] Preferably, the seat cushion lifting mechanism of the present utility model includes: a movable seat cushion frame. A strip-shaped sliding hole is provided at the rear end of the movable seat cushion frame, and a hinge shaft connection hole is provided at the front end of the movable seat cushion frame. The movable seat cushion frame is connected to the seat cushion adjustment rotating shaft on the lower connecting plate of the angle adjuster through the strip-shaped sliding hole. A front hinge shaft is fixedly connected to the seat cushion fixing seat below the movable seat cushion frame. The movable seat cushion frame is hinged to the front hinge shaft on the seat cushion fixing seat through the hinge shaft connection hole. During the backward folding process of the seat back frame, the lower end of the lower connecting plate of the angle adjuster is driven to rotate forward around the angle adjuster rotating shaft. The seat cushion adjustment rotating shaft on the lower connecting plate of the angle adjuster drives the rear end of the movable seat cushion frame to lift upward and be flush with the folded-back seat back frame. At the same time, the front end of the movable seat cushion frame rotates upward on the seat cushion fixing seat through the front hinge shaft, so that the movable seat cushion frame is flush with the folded-back seat back frame.

[0012] Preferably, the locking tongue of the extended backrest lock is installed at the middle position of the lower end of the seat back frame. A lock hole is provided in the lower part of the extended backrest frame corresponding to the position of the locking tongue. The unlocking pull belt of the extended backrest lock drives the locking tongue to unlock from the lock hole. The pulling rope end of the unlocking pull belt is arranged near the unlocking handle of the angle adjuster.

[0013] Preferably, one end of the extended backrest retracting pull belt passes through the strip-shaped avoidance hole on the side of the seat back frame, and the other end of the extended backrest retracting pull belt passes through the strip-shaped avoidance hole provided on the side of the extended backrest frame. By pulling both ends of the extended backrest retracting pull belt, the extended backrest frame is manually folded on the back of the seat back frame.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. In view of the problem in the prior art that the seat is folded forward, the upper surface is a backboard felt, and the lying experience is too hard and an air cushion bed needs to be used in cooperation, in the present utility model, the backrest frame unfolds backward, and the upper surface after unfolding is covered by a leather wrap, so the comfort is higher and the use of the air cushion bed can be cancelled.

[0016] 2. In the present utility model, by adding a foldable extended backrest frame to cooperate with the backward tilting of the seat back frame, the double-layer foldable backrest design enables the front and rear row seats to be directly connected into a bed after being laid flat. Double unlocking is manually controlled, and the automatically opened multi-link mechanism acts as a support mechanism for support to enhance stability.

[0017] The unlocking process of the seat back frame, the extended backrest frame and the floor support mechanism of the present utility model does not require the occupant to leave the seat, and there is no need to adjust the posture too much by itself, thus improving the operation portability of the rear seat folding mechanism.

[0018] 4. In view of the problem that the seat cushion cannot be flush with the reclined seat back frame after the seat back frame is reclined, which affects the lying comfort, the present utility model makes the seat cushion frame automatically adjust to a position flush with the reclined seat back frame by adding a seat cushion lifting mechanism, thereby improving the lying experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By referring to the following description in conjunction with the drawings, and with a more comprehensive understanding of the present utility model, other objects and results of the present utility model will become more apparent and easier to understand. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the extended backrest frame in the folded state of Embodiment 1.

[0021] Figure 2 It is one of the schematic diagrams of the overall structure of the extended backrest frame during the unfolding process of Embodiment 1.

[0022] Figure 3 It is another schematic diagram of the overall structure of the extended backrest frame during the unfolding process of Embodiment 1.

[0023] Figure 4 It is still another schematic diagram of the overall structure of the extended backrest frame during the unfolding process of Embodiment 1.

[0024] Figure 5 It is a schematic diagram of the overall structure of the extended backrest frame in the unfolded state of Embodiment 1.

[0025] Figure 6 It is a schematic diagram of the overall structure of the seat cushion lifting mechanism before lifting in Embodiment 1.

[0026] Figure 7 It is a schematic diagram of the overall structure of the seat cushion lifting mechanism after lifting in Embodiment 1.

[0027] Figure 8 It is a schematic diagram of the overall structure of the seat cushion lifting mechanism before lifting in Embodiment 2.

[0028] Figure 9 It is a schematic diagram of the overall structure of the seat cushion lifting mechanism after lifting in Embodiment 2.

[0029] The reference numerals therein include: seat back frame 1, extended backrest frame 2, floor support mechanism 3, active support arm 301, first driven support arm 302, second driven support arm 303, third driven support arm 304, intermediate leg 305, rear leg 306, seat cushion lifting mechanism 4, first movable seat cushion frame 401, seat cushion adjustment rotating shaft 402, sliding rotating shaft 403, first strip-shaped sliding hole 404, second movable seat cushion frame 405, second strip-shaped sliding hole 406, second hinge shaft connection hole 407, front end hinge shaft 408, angle adjuster 5, seat cushion fixing seat 6, angle adjuster lower connecting plate 7, extended backrest lock 8, unlocking pull strap 801, extended backrest retracting pull strap 9, support backrest coil spring 10, angle adjuster rotating shaft 11, extended backrest coil spring 12. Detailed implementation manners

[0030] Embodiment 1

[0031] Refer to Figures 1-7 As shown, a vehicle seat with a rear seat reclining mechanism provided in this embodiment includes: an extended backrest frame 2 foldably disposed on a seat back frame 1, a floor support mechanism 3 disposed below the extended backrest frame 2 and the seat back frame 1, and a seat cushion lifting mechanism 4. The top of the seat back frame 1 is rotatably connected to the extended backrest frame 2, and the bottom of the seat back frame 1 is rotatably connected to a seat cushion fixing seat 6 of a seat cushion frame assembly through an angle adjuster 5. A lower connecting plate 7 of the angle adjuster is installed at a position of the bottom of the seat back frame 1 close to the angle adjuster 5, and the lower connecting plate 7 of the angle adjuster is connected to the seat cushion lifting mechanism 4 and drives the seat cushion to lift and lower; the seat cushion lifting mechanism 4 is used to automatically adjust the movable seat cushion frame 401 of the seat cushion frame assembly to be flush with the reclined seat back frame 1, and the floor support mechanism 3 is used to automatically unfold and support the reclined seat back frame 1 and the unfolded extended backrest frame 2; an extended backrest lock 8 and an extended backrest retracting pull strap 9 are disposed between the extended backrest frame 2 and the seat back frame 1. The extended backrest lock 8 is used to lock the free end (lower end) of the extended backrest frame 2 to the seat back frame 1, and the extended backrest retracting pull strap 9 is used to pull the extended backrest frame 2 to be folded into a folded state; an extended backrest coil spring 12 is sleeved on the hinge shaft connecting the seat back frame 1 and the extended backrest frame 2, and the extended backrest coil spring 12 is used to assist the extended backrest frame to unfold; a support backrest coil spring 10 (a structure for manually adjusting the angle adjuster) is sleeved on the angle adjuster rotating shaft connecting the seat back frame 1 and the angle adjuster 5, and the support backrest coil spring 10 is used to lift the reclined seat back frame 1 to an initial position.

[0032] The floor support mechanism 3 in this embodiment is a six-link automatic deployment and recovery structure. The floor support mechanism 3 includes: a main support arm 301, a first driven support arm 302, a second driven support arm 303, a third driven support arm 304, an intermediate leg 305, and a rear leg 306. The intermediate leg 305 is hinged at a position near the top of the seat backrest frame 1, and the rear leg 306 is hinged at the bottom position of the extended backrest frame 2. One end of the main support arm 301 is hinged to the rear leg 306, and the other end is hinged to the first driven support arm 302. One end of the first driven support arm 302 is hinged at the bottom position of the extended backrest frame 2, and the other end is hinged to one end of the second driven support arm 303. The other end of the second driven support arm 303 is hinged to one end of the third driven support arm 304, and the other end of the third driven support arm 304 is hinged to the intermediate leg 305. During the deployment process of the extended backrest frame 2 and the seat backrest frame 1, the main support arm 301 is driven. The main support arm 301 drives the rear leg 306 to deploy and stand upright and drives the first driven support arm 302. The first driven support arm 302 drives the second driven support arm 303. The second driven support arm 303 drives the third driven support arm 304. The third driven support arm 304 drives the intermediate leg 305 to deploy and stand upright.

[0033] The seat cushion lifting mechanism 4 in this embodiment includes: a first movable seat cushion frame 401. The rear end of the first movable seat cushion frame 401 is hinged to a seat cushion adjustment rotating shaft 402 on the lower connecting plate 7 of the angle adjuster. The front end of the first movable seat cushion frame 401 is fixedly connected with a sliding rotating shaft 403. A first strip-shaped sliding hole 404 is formed in a seat cushion fixing seat 6 below the first movable seat cushion frame 401. The sliding rotating shaft 403 of the first movable seat cushion frame 401 is slidably connected in the first strip-shaped sliding hole 404 of the seat cushion fixing seat 6. During the process of the seat backrest frame 1 being reclined backward, the lower end of the lower connecting plate 7 of the angle adjuster is driven to rotate forward around the angle adjuster rotating shaft 11. The seat cushion adjustment rotating shaft 402 on the lower connecting plate 7 of the angle adjuster drives the rear end of the first movable seat cushion frame 401 to be lifted upward (in the Z direction) and be flush with the reclined seat backrest frame 1. At the same time, the front end of the movable seat cushion frame 401 moves forward on the seat cushion fixing seat 6 through the sliding rotating shaft 403, so that the first movable seat cushion frame 401 is flush with the reclined seat backrest frame 1.

[0034] The lock tongue of the extended backrest lock 8 in this embodiment is installed at the middle position of the lower end of the seat backrest frame 1. A lock hole is formed in the lower part of the extended backrest frame 2 corresponding to the position of the lock tongue. The unlocking pull belt 801 of the extended backrest lock 8 drives the lock tongue to be unlocked from the lock hole. The pulling rope end of the unlocking pull belt 801 is arranged near the unlocking handle of the angle adjuster.

[0035] In this embodiment, one end of the extended backrest recovery strap 9 passes through the strip avoidance hole on the side of the seat back frame 1, and the other end of the extended backrest recovery strap 9 passes through the strip avoidance hole opened on the side of the extended backrest frame 2. By pulling the two ends of the extended backrest recovery strap 9, the extended backrest frame 2 is manually folded on the back of the seat back frame 1.

[0036] Working process:

[0037] 1. When the seat back frame 1 is folded down, the recliner 5 is unlocked and the unlocking strap 801 is pulled. This unlocks the seat back frame 1 and simultaneously opens the extension back lock 8 via the unlocking strap 801. The seat back frame 1 is folded down backward, and the extension back frame 2 springs back under the elastic force of the extension back coil spring. The extension back frame 2 automatically opens with the assistance of the elastic force of the extension back coil spring and the weight of the extension back frame 2.

[0038] 2. During the unfolding of the extended backrest frame 2, the ground support mechanism 3 automatically opens and supports the bottom plate of the car trunk. Among them, when the seat back frame 1 is opened, the active support arm 301 drives the first driven support arm 302, the second driven support arm 303 and the third driven support arm 304 to open in a coordinated manner. The third driven support arm 304 pulls the middle support leg 305 to an upright state, and the active support arm 301 pulls the rear support leg 306 to an upright state; at that time, the extended backrest frame 1 and the seat back frame 1 can be kept completely horizontal, and the middle support leg 305 and the rear support leg 306 can provide the best support. The release of the ground support mechanism 3 is completely automatic during the entire folding process. During the seat folding process, the ground support mechanism 3 can be automatically recovered to the vacant position of the seat back frame 1 without taking up extra space.

[0039] 3. When the seat back frame 1 is folded backward, the lower end of the recliner lower connecting plate 7 is driven to rotate forward around the recliner shaft 11. The seat cushion adjustment shaft 402 on the recliner lower connecting plate 7 drives the rear end of the first movable seat cushion frame 401 to rise upward and be flush with the folded seat back frame 1. At the same time, the front end of the first movable seat cushion frame 401 moves forward on the seat cushion fixing seat 6 via the sliding shaft 403, so that the first movable seat cushion frame 401 is flush with the folded seat back frame 1.

[0040] 4. When the seat back frame 1 is recycled, the unlocking pull belt 801 is pulled, and the seat back frame 1 automatically rises under the elastic force of the supporting backrest coil spring 10. The extending backrest frame 2 folds inward, and at the same time, the extending backrest recycling pull belt 9 is pulled to fold the extending backrest frame 2 to the initial position and lock it with the extending backrest lock 8. At the same time, the floor support mechanism 3 will automatically retract the middle leg 305 and the rear foot 306 into the seat back frame 1. During the upward lifting process of the seat back frame 1, the seat cushion adjusting rotating shaft 402 on the lower connecting plate 7 of the angle adjuster will drive the first movable seat cushion frame 401 to retract downward to adjust to the initial position of the member's sitting posture.

[0041] Embodiment 2

[0042] Refer to Figures 8-9 As shown, this embodiment provides a seat cushion lifting mechanism, including: a second movable seat cushion frame 405. A second strip-shaped sliding hole 406 is opened at the rear end of the second movable seat cushion frame 405, and a second hinge shaft connection hole 407 is opened at the front end of the second movable seat cushion frame 405. The second movable seat cushion frame 405 is connected to the seat cushion adjusting rotating shaft 402 on the lower connecting plate 7 of the angle adjuster through the second strip-shaped sliding hole 406. A front end hinge shaft 408 is fixedly connected to the seat cushion fixing seat 6 below the second movable seat cushion frame 405. The second movable seat cushion frame 405 is hinged on the front end hinge shaft 408 on the seat cushion fixing seat 6 through the second hinge shaft connection hole 407. During the backward reclining process of the seat back frame 1, the lower end of the lower connecting plate 7 of the angle adjuster is driven to rotate forward around the angle adjuster rotating shaft 11. The seat cushion adjusting rotating shaft 402 on the lower connecting plate 7 of the angle adjuster drives the rear end of the second movable seat cushion frame 405 to rise upward and be flush with the reclined seat back frame 1. At the same time, the front end of the second movable seat cushion frame 405 rotates upward on the seat cushion fixing seat 6 through the front end hinge shaft 408, so that the second movable seat cushion frame 405 is flush with the reclined seat back frame 1.

[0043] The remaining structures of this embodiment are the same as those of Embodiment 1.

[0044] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An automotive seat with a rear seat reclining mechanism, characterized in that, Comprising: A telescopic backrest frame folded and arranged on the seat backrest frame, a floor support mechanism arranged below the telescopic backrest frame and / or the seat backrest frame, and a seat cushion lifting mechanism. The top of the seat backrest frame is rotatably connected to the telescopic backrest frame. The bottom of the seat backrest frame is rotatably connected to the seat cushion frame assembly through an angle adjuster. A lower connecting plate of the angle adjuster is installed at a position of the bottom of the seat backrest frame close to the angle adjuster. The lower connecting plate of the angle adjuster is connected to the seat cushion lifting mechanism and drives the seat cushion to lift and lower. The seat cushion lifting mechanism is used to automatically adjust the seat cushion frame to be flush with the folded seat backrest frame. The floor support mechanism is used to automatically unfold and support the folded seat backrest frame and / or the unfolded telescopic backrest frame. An extension backrest lock and an extension backrest recovery strap are arranged between the telescopic backrest frame and the seat backrest frame. The extension backrest lock is used to lock the free end of the telescopic backrest frame to the seat backrest frame. The extension backrest recovery strap is used to pull the telescopic backrest frame to be folded into a folded state. An extension backrest coil spring is sleeved on the hinge shaft connecting the seat backrest frame and the telescopic backrest frame. The extension backrest coil spring is used to assist the telescopic backrest frame to unfold. A support backrest coil spring is sleeved on the angle adjuster rotating shaft connecting the seat backrest frame and the angle adjuster, or an angle adjustment driving motor for driving the angle adjuster rotating shaft to rotate is provided. The support backrest coil spring and the angle adjustment driving motor are used to lift the folded seat backrest frame to an initial position.

2. The vehicle seat with a rear seat reclining mechanism according to claim 1, characterized in that, The floor support mechanism includes: a main support arm, a first driven support arm, a second driven support arm, a third driven support arm, an intermediate leg, and a rear leg. The intermediate leg is hinged at a position of the seat backrest frame close to the top. The rear leg is hinged at the bottom position of the telescopic backrest frame. One end of the main support arm is hinged to the rear leg, and the other end is hinged to the first driven support arm. One end of the first driven support arm is hinged at the bottom position of the telescopic backrest frame, and the other end is hinged to one end of the second driven support arm. The other end of the second driven support arm is hinged to one end of the third driven support arm. The other end of the third driven support arm is hinged to the intermediate leg. During the unfolding process of the telescopic backrest frame and the seat backrest frame, the main support arm is driven. The main support arm drives the rear leg to unfold and stand upright and drives the first driven support arm. The first driven support arm drives the second driven support arm. The second driven support arm drives the third driven support arm. The third driven support arm drives the intermediate leg to unfold and stand upright.

3. The vehicle seat with a rear seat reclining mechanism according to claim 1, characterized in that, The seat cushion lifting mechanism includes: a movable seat cushion skeleton, the rear end of the movable seat cushion skeleton is hinged on a seat cushion adjusting rotating shaft on the lower connecting plate of the angle adjuster, the front end of the movable seat cushion skeleton is fixedly connected with a sliding rotating shaft, a strip-shaped sliding hole is formed in a seat cushion fixing seat below the movable seat cushion skeleton, the sliding rotating shaft of the movable seat cushion skeleton is slidably connected in the strip-shaped sliding hole of the seat cushion fixing seat, during the process of the seat backrest skeleton being laid back backward, the lower end of the lower connecting plate of the angle adjuster drives the lower end of the lower connecting plate of the angle adjuster to rotate forward around the angle adjuster rotating shaft, the seat cushion adjusting rotating shaft on the lower connecting plate of the angle adjuster drives the rear end of the movable seat cushion skeleton to lift upward and be flush with the laid-back seat backrest skeleton, and at the same time, the front end of the movable seat cushion skeleton moves forward on the seat cushion fixing seat through the sliding rotating shaft, so that the movable seat cushion skeleton is flush with the laid-back seat backrest skeleton.

4. The vehicle seat with a rear seat reclining mechanism according to claim 1, characterized in that, The seat cushion lifting mechanism includes: a movable seat cushion skeleton, a strip-shaped sliding hole is formed in the rear end of the movable seat cushion skeleton, a hinge shaft connection hole is formed in the front end of the movable seat cushion skeleton, the movable seat cushion skeleton is connected with a seat cushion adjusting rotating shaft on the lower connecting plate of the angle adjuster through the strip-shaped sliding hole, a front end hinge shaft is fixedly connected to a seat cushion fixing seat below the movable seat cushion skeleton, the movable seat cushion skeleton is hinged on the front end hinge shaft on the seat cushion fixing seat through the hinge shaft connection hole, during the process of the seat backrest skeleton being laid back backward, the lower end of the lower connecting plate of the angle adjuster drives the lower end of the lower connecting plate of the angle adjuster to rotate forward around the angle adjuster rotating shaft, the seat cushion adjusting rotating shaft on the lower connecting plate of the angle adjuster drives the rear end of the movable seat cushion skeleton to lift upward and be flush with the laid-back seat backrest skeleton, and at the same time, the front end of the movable seat cushion skeleton rotates upward on the seat cushion fixing seat through the front end hinge shaft, so that the movable seat cushion skeleton is flush with the laid-back seat backrest skeleton.

5. The vehicle seat with a rear seat reclining mechanism according to claim 1, characterized in that, The lock tongue of the extended backrest lock is installed at the middle position of the lower end of the seat backrest skeleton, a lock hole is formed in the lower part of the extended backrest skeleton corresponding to the position of the lock tongue, the unlocking pull belt of the extended backrest lock drives the lock tongue to unlock with the lock hole, and the pulling rope end of the unlocking pull belt is arranged near the unlocking handle of the angle adjuster.

6. The vehicle seat with a rear seat reclining mechanism according to claim 1, characterized in that, One end of the extended backrest recovery pull belt passes through a strip-shaped avoidance hole on the side of the seat backrest skeleton, the other end of the extended backrest recovery pull belt passes through a strip-shaped avoidance hole formed on the side of the extended backrest skeleton, and by pulling the two ends of the extended backrest recovery pull belt, the extended backrest skeleton is manually folded on the back of the seat backrest skeleton.

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