Automobile rear-row quartered seat capable of being folded by one key

Abstract

The utility model relates to the technical field of automobile seats, in particular to an automobile rear-row quartered seat capable of being folded by one key. Comprising a seat base, a seat back frame and two mounting rods, mounting plates are fixedly connected to the two ends of one side of the seat base, a rotating shaft is fixedly connected to the surface of one mounting plate, one side of the rotating shaft is fixedly connected with the side wall of the bottom end of the seat back frame, and the other mounting plate is rotationally connected with the side, away from the rotating shaft, of the seat back frame; the two mounting rods are located at the two ends of the seat base correspondingly, supporting bases are arranged on the two sides of the end, away from the seat back frame, of the seat base correspondingly, and an adjusting device is arranged on the surface of the seat back frame and comprises an overturning assembly, a limiting assembly and an auxiliary assembly. The automobile rear-row quartered seat capable of being folded through one key has the advantage that deflection adjustment can be conveniently and rapidly conducted on the whole seat back frame and the seat base.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a rear-row four-part seat of an automobile which can be folded with one key. Background Art

[0002] A car seat is composed of a backrest, a seat cushion and a support frame. The seat is not only a seat, but also has functions such as flipping and deforming, which are more common in daily life.

[0003] The existing document CN209454607U discloses a car seat cushion flip-up backrest folding structure. The patent includes a cushion frame, a backrest frame, a flipping mechanism, and a bottom connecting bracket. The flipping mechanism and the backrest frame are installed on the bottom connecting bracket. The flipping mechanism is connected to the cushion frame, and the flipping mechanism drives the cushion frame to flip. The backrest frame can be flipped and folded on the bottom connecting bracket.

[0004] However, during the operation and use of the car seat, since ordinary car seats can only be deflected at an angle, when the rear space of the car is needed or people need to walk, the position of the seat needs to be adjusted, which will lead to the problem of being unable to fold and adjust the limit of the car seat. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that during the operation and use of a car seat, since a common car seat can only be deflected at an angle, when there is a need to use the rear space of the car or for people to walk, the position of the seat needs to be adjusted, which will result in the inability to fold and adjust the limit position of the car seat.

[0006] In order to solve the above technical problems, the utility model provides a car rear four-part seat that can be folded with one button, comprising: a seat base, a seat back frame and two mounting rods, one end of one side of the seat base is fixedly connected to a mounting plate, the surface of one of the mounting plates is fixedly connected to a rotating shaft, one side of the rotating shaft is fixedly connected to the bottom side wall of the seat back frame, and the other mounting plate is rotatably connected to a side of the seat back frame away from the rotating shaft, the two mounting rods are respectively located at the two ends of the seat base, support seats are provided on both sides of the end of the seat base away from the seat back frame, and an adjustment device is provided on the surface of the seat back frame, and the adjustment device includes a flipping component, a limiting component and an auxiliary component.

[0007] The effect achieved by the above-mentioned components is: during the use of the car seat, in order to facilitate the flipping of the seat back frame of the car seat, so as to conveniently adjust the interior space of the car, the adjustment device on the surface of the seat back frame and the surface of the seat base can be used for convenient operation, and the deflection adjustment of the entire seat back frame and the seat base can be effectively performed.

[0008] Preferably, the flip assembly includes a first fixed frame, one side of the first fixed frame is fixedly connected to the surface of the seat back frame, the inner wall of the first fixed frame is rotatably connected to the first flip frame, the upper surface of the seat back frame is fixedly connected to the second fixed frame, the inner wall of the second fixed frame is rotatably connected to the second flip frame, the surface of the seat back frame close to the rotating shaft is fixedly connected to the first shrinkage tube, the inner wall of the first shrinkage tube is rotatably connected to the second flip frame, the second wire harness, the second wire harness and the third wire harness are respectively slidably connected to the first wire harness, the second wire harness and the third wire harness are both fixedly connected to the first wire harness, one end of the second wire harness close to the second fixed frame is fixedly connected to the inner wall of the second flip frame, one end of the third wire harness close to the first fixed frame is fixedly connected to the inner wall of the first flip frame, one end of the rotating shaft is fixedly connected to a connecting plate, and one end of the first wire harness away from the first shrinkage tube is fixedly connected to the connecting plate, the surface of the mounting plate is fixedly connected to a positioning frame, the cross-section of the positioning frame is "U"-shaped, and the inner wall of the positioning frame is slidably connected to the surface of the first wire harness.

[0009] The effects achieved by the above components are: first, when the entire car seat is placed in the last row in the car, the car seat needs to be flipped over to increase the trunk space of the car. At this time, you only need to pull the first flip frame in the first fixed frame to allow the first flip frame to drive the third wire bundle in the first shrink wire tube and the first wire bundle to stretch and move against each other, thereby driving the rotation of the rotating shaft and the connecting plate on the surface of the mounting plate on one side of the seat back frame, so that the entire seat back frame can be easily flipped over. When the car seat is placed in the middle position inside the car, the passenger needs to flip the seat over. At this time, you only need to pull the second flip frame in the second fixed frame to allow the second flip frame to drive the second wire bundle, and let the second wire bundle pull the first wire bundle for adjustment, so that the first wire bundle can rotate the connecting plate on the surface of the rotating shaft, and the entire seat back frame is flipped and regulated synchronously.

[0010] Preferably, the limiting assembly includes a second shrinkage wire tube, the inner walls of which are slidably connected with a fourth wire harness, a fifth wire harness and a sixth wire harness, respectively, the fifth wire harness and the sixth wire harness are both fixedly connected to the fourth wire harness, an extrusion plate is fixedly connected to the bottom surface of one end of the seat back frame away from the rotating shaft, the cross-section of the extrusion plate is convex, the surface of the mounting plate is rotatably connected to the limiting plate relative to the position of the extrusion plate, the surface of the mounting plate is rotatably connected to the limiting block corresponding to the position of the limiting plate, the limiting block and the extrusion plate are located on the same central axis, the cross-section of the limiting block is in the shape of a barb, and the limiting block and the limiting block are fixedly connected to the seat back frame. The plates are abutted, a second tension spring is fixedly connected to one side of the upper end of the limit block, an end of the second tension spring away from the limit block is fixedly connected to the extrusion plate, the bottom end of the limit block is fixedly connected to the first tension spring, an end of the first tension spring away from the limit block is fixedly connected to the mounting plate, an end of the fourth wire harness away from the second shrinkage wire tube is fixedly connected to the limit block, the positions of the two ends of the seat base corresponding to the mounting rods are rotatably connected with rotating buckles, the inner wall of the rotating buckle is snapped with the surface of the mounting rod, and the ends of the fifth wire harness and the sixth wire harness away from the second shrinkage wire tube are respectively fixedly connected to the rotating buckle.

[0011] The effect achieved by the above-mentioned components is: in the process of flipping the entire seat back frame, due to the flipping of the left back frame, the extrusion plate on one side of the seat back frame is deflected at the same time, so that the extrusion plate and the limit plate are abutted and rotated, and then the limit plate drives the limit block to rotate through the tension generated by the first tension spring and the second tension spring, and at the same time, the fourth harness fixed at one end of the limit block is stretched and moved. At this time, the fifth harness and the sixth harness fixed to the fourth harness will drive the deflection of the rotating buckle, so that the rotating buckle and the mounting rod will fall off. At this time, the entire seat base and the seat back frame can be flipped and folded at the same time.

[0012] Preferably, the auxiliary component includes an auxiliary frame, the upper end of the auxiliary frame is fixedly connected to the lower surface of the seat base, the inner wall of the auxiliary frame is rotatably connected to the upper end of the support seat, one side of the inner wall of the auxiliary frame is fixedly connected with an inlay column, one side of the inner wall of the support seat is fixedly connected with an inlay rod, the arc surface of the inner wall of the auxiliary frame is sleeved with a coil spring, the two ends of the coil spring are respectively fixedly connected to the inlay column and the inlay rod, and the same insertion rod slides through the surface of the auxiliary frame and the support seat.

[0013] The effect achieved by the above components is: after the entire seat base and the seat back frame are flipped over, in order to facilitate the simultaneous lifting of the seat base and the seat back frame, the auxiliary frame on the support seat and the lower surface of the seat base is rotated, and the auxiliary deflection limit is assisted by the coil spring installed in the auxiliary frame. During this process, you only need to pull the plug rod that slides through the auxiliary frame and the surface of the support seat.

[0014] Preferably, the cross section of the insertion rod is in an "L" shape, the long arm end of the insertion rod is fixedly connected with a guide block, and the cross section of the guide block is in a pointed cone shape.

[0015] The effect achieved by the above components is that in the process of inserting and limiting the insertion rod, the insertion rod can be conveniently operated and used through the insertion rod with a pointed cone-shaped cross section.

[0016] Preferably, a protective sleeve is fixedly connected to the short arm end of the insertion rod, and the protective sleeve is a rubber sleeve.

[0017] The effect achieved by the above components is that during the operation of the insertion rod, the insertion rod can be conveniently pulled through the rubber protective cover for movement and adjustment.

[0018] Preferably, a limiting groove is provided on the surface of the mounting plate corresponding to the position of the limiting plate, and an inner wall of the limiting groove is slidably connected to one side of the limiting plate.

[0019] The effect achieved by the above components is that when the position of the limit plate is squeezed and deflected, the position of the limit plate can be protected, limited and fixed by using the limit groove.

[0020] Beneficial effect: The utility model provides a car rear four-part seat that can be folded with one button. First, when the entire car seat is placed in the last row in the car, the car seat needs to be flipped over to increase the car's trunk space. At this time, it is only necessary to pull the first flip frame in the first fixed frame to allow the first flip frame to drive the third wire harness in the first shrink wire tube and the first wire harness to stretch and move relative to each other, thereby driving the rotation of the rotating shaft and the connecting plate on the surface of the mounting plate on one side of the seat back frame, so that the entire seat back frame can be conveniently flipped over. When the car seat is placed in the middle position inside the car, the passenger needs to flip the seat over. At this time, it is only necessary to pull the second flip frame in the second fixed frame to allow the second flip frame to drive the second wire harness, and allow the second wire harness to pull the first wire harness for adjustment, thereby allowing the first wire harness to rotate the connecting plate on the surface of the rotating shaft, and the entire seat back frame is synchronously flipped and regulated. At the same time, due to the flipping of the left back frame, the extrusion plate on one side of the seat back frame is also driven to deflect its position. The camming mechanism of the seat backrest is actuated by the spring which is arranged on the support frame and the spring which is arranged on the support frame to move the seat backrest and the support frame to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a rear-row four-part seat for a car that can be folded with one key provided by the utility model;

[0022] Figure 2 for Figure 1 The structural schematic diagram of the regulating device shown;

[0023] Figure 3 for Figure 2 A partial structural schematic diagram of the regulating device shown;

[0024] Figure 4 for Figure 1 The enlarged structural diagram of A shown;

[0025] Figure 5 for Figure 1The structural schematic diagram of the limit assembly shown;

[0026] Figure 6 for Figure 5 A schematic diagram of the local structure of the limiting component shown;

[0027] Figure 7 for Figure 1 A schematic diagram of the structure of the auxiliary components shown.

[0028] Numbers in the figure: 1, seat back frame; 2, seat base; 3, mounting rod; 4, adjustment device; 41, flip assembly; 4101, first fixed frame; 4102, first flip frame; 4103, second fixed frame; 4104, second flip frame; 4105, first shrink wire tube; 4106, first wire bundle; 4107, second wire bundle; 4108, positioning frame; 4109, connecting plate; 4110, third wire bundle; 42, limit assembly; 4201, second shrink wire tube; 4202, first Four wire bundles; 4203, the fifth wire bundle; 4204, the sixth wire bundle; 4205, the rotating buckle; 4206, the limiting groove; 4207, the limiting plate; 4208, the limiting block; 4209, the first tension spring; 4210, the second tension spring; 4211, the extrusion plate; 43, the auxiliary component; 431, the auxiliary frame; 432, the coil spring; 433, the inlay rod; 434, the inlay column; 435, the plug rod; 436, the guide block; 437, the protective cover; 5, the mounting plate; 6, the rotating shaft; 7, the supporting seat. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0031] See also Figures 1 to 7 The utility model provides a one-touch foldable rear-row four-part seat for a car, comprising: a seat base 2, a seat back frame 1 and two mounting rods 3. Both ends of one side of the seat base 2 are fixedly connected with mounting plates 5, a surface of one mounting plate 5 is fixedly connected with a rotating shaft 6, one side of the rotating shaft 6 is fixedly connected to the bottom side wall of the seat back frame 1, and the other mounting plate 5 is rotatably connected to the side of the seat back frame 1 away from the rotating shaft 6. The two mounting rods 3 are respectively located at the two ends of the seat base 2, and support seats 7 are arranged on both sides of the end of the seat base 2 away from the seat back frame 1. An adjusting device 4 is arranged on the surface of the seat back frame 1, and the adjusting device 4 comprises a flipping component 41, a limiting component 42 and an auxiliary component 43.

[0032] In the embodiments of the present invention, please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7The flip assembly 41 includes a first fixed frame 4101, one side of the first fixed frame 4101 is fixedly connected to the surface of the seat back frame 1, the inner wall of the first fixed frame 4101 is rotatably connected to the first flip frame 4102, the upper surface of the seat back frame 1 is fixedly connected to the second fixed frame 4103, the inner wall of the second fixed frame 4103 is rotatably connected to the second flip frame 4104, a first shrink wire tube 4105 is fixedly connected to the surface of one side of the seat back frame 1 close to the rotating shaft 6, the inner wall of the first shrink wire tube 4105 is slidably connected to the first wire harness 4106, the second wire harness 4107 and the third wire harness 4110, the second wire harness 4107 and the third wire harness 4110 are both fixedly connected to the first wire harness 4106, the second wire harness 4107 is close to the second fixed frame 4103 One end of the third wire harness 4110 is fixedly connected to the inner wall of the second flip frame 4104, one end of the third wire harness 4110 close to the first fixed frame 4101 is fixedly connected to the inner wall of the first flip frame 4102, one end of the rotating shaft 6 is fixedly connected to the connecting plate 4109, one end of the first wire harness 4106 away from the first shrink wire tube 4105 is fixedly connected to the connecting plate 4109, a positioning frame 4108 is fixedly connected to the surface of the mounting plate 5, the cross-section of the positioning frame 4108 is "U"-shaped, the inner wall of the positioning frame 4108 is slidably connected to the surface of the first wire harness 4106, the limiting assembly 42 includes a second shrink wire tube 4201, and the inner walls of the second shrink wire tube 4201 are respectively slidably connected to the fourth wire harness 4202, the fifth wire harness 4203 and the sixth wire harness 4204, and the fifth wire harness 4 203 and the sixth harness 4204 are both fixedly connected to the fourth harness 4202, an extrusion plate 4211 is fixedly connected to the bottom surface of one end of the seat back frame 1 away from the rotating shaft 6, the cross-section of the extrusion plate 4211 is convex, the surface of the mounting plate 5 is rotatably connected to the limiting plate 4207 relative to the position of the extrusion plate 4211, the surface of the mounting plate 5 is rotatably connected to the limiting block 4208 corresponding to the position of the limiting plate 4207, the limiting block 4208 and the extrusion plate 4211 are located on the same central axis, the cross-section of the limiting block 4208 is in the shape of a barb, the limiting block 4208 abuts against the limiting plate 4207, a second tension spring 4210 is fixedly connected to one side of the upper end of the limiting block 4208, the end of the second tension spring 4210 away from the limiting block 4208 is fixedly connected to the extrusion plate 4211, the limiting block The bottom end of 4208 is fixedly connected with a first tension spring 4209, and one end of the first tension spring 4209 away from the limit block 4208 is fixedly connected to the mounting plate 5, and one end of the fourth wire harness 4202 away from the second shrink line tube 4201 is fixedly connected to the limit block 4208, and the positions of the two ends of the seat base 2 corresponding to the mounting rod 3 are rotatably connected with a rotating buckle 4205, and the inner wall of the rotating buckle 4205 is snapped with the surface of the mounting rod 3, and the fifth wire harness 4203 and the sixth wire harness 4204 are fixedly connected with the rotating buckle 4205 at one end away from the second shrink line tube 4201, respectively. The auxiliary component 43 includes an auxiliary frame 431, and the upper end of the auxiliary frame 431 is fixedly connected to the lower surface of the seat base 2, and the inner wall of the auxiliary frame 431 is rotatably connected to the upper end of the support seat 7.An inlay column 434 is fixedly connected to the inner wall of one side of the auxiliary frame 431, and an inlay rod 433 is fixedly connected to one side of the inner wall of the support seat 7. A coil spring 432 is sleeved on the arc surface of the inner wall of the auxiliary frame 431, and the two ends of the coil spring 432 are fixedly connected to the inlay column 434 and the inlay rod 433 respectively. The auxiliary frame 431 and the surface of the support seat 7 are slidably penetrated by the same plug rod 435, and the cross section of the plug rod 435 is "L" shaped. The long arm end of the plug rod 435 is fixedly connected to a guide block 436, and the cross section of the guide block 436 is a pointed cone. The short arm end of the plug rod 435 is fixedly connected to a protective sleeve 437, which is a rubber sleeve. A limiting groove 4206 is provided on the surface of the mounting plate 5 corresponding to the position of the limiting plate 4207, and the inner wall of the limiting groove 4206 is slidably connected to one side of the limiting plate 4207.

[0033] The working principle of the one-key foldable rear-row four-part seat provided by the utility model is as follows: first, when the entire car seat is placed in the last row in the car, the car seat needs to be flipped over to increase the car's trunk space. At this time, it is only necessary to pull the first flip frame 4102 in the first fixed frame 4101, so that the first flip frame 4102 drives the third wire bundle 4110 in the first shrink wire tube 4105 and the first wire bundle 4106 to stretch and move relative to each other, thereby driving the rotation of the rotating shaft 6 on the surface of the mounting plate 5 on one side of the seat back frame 1 and the connecting plate 4109 , so that the entire seat back frame 1 can be easily flipped over. When the car seat is placed in the middle position inside the car, the passenger needs to flip the seat over. At this time, it is only necessary to pull the second flip frame 4104 in the second fixed frame 4103, so that the second flip frame 4104 drives the second harness 4107, and the second harness 4107 pulls the first harness 4106 for adjustment, so that the first harness 4106 rotates the connecting plate 4109 on the surface of the rotating shaft 6, and the entire seat back frame 1 is flipped and regulated synchronously. At the same time, since the seat back frame 1 During the flipping process, the extrusion plate 4211 on one side of the seat back frame 1 is driven to deflect its position, so that the extrusion plate 4211 and the limit plate 4207 are abutted and rotated, and then the limit plate 4207 drives the limit block 4208 to deflect and limit through the tension generated by the first tension spring 4209 and the second tension spring 4210, and at the same time, the fourth harness 4202 fixed at one end of the limit block 4208 is stretched and moved, and at this time, the fifth harness 4203 and the sixth harness 4204 fixed to the fourth harness 4202 will drive the rotating buckle 4205 Deflection allows the rotating buckle 4205 and the mounting rod 3 to fall off. At this time, the entire seat base 2 and the seat back frame 1 can be flipped and folded at the same time. After the entire seat base 2 and the seat back frame 1 are flipped, in order to facilitate the simultaneous lifting of the seat base 2 and the seat back frame 1, the auxiliary frame 431 on the lower surface of the support seat 7 and the seat base 2 is rotated, and the auxiliary deflection limit is performed by the coil spring 432 sleeved in the auxiliary frame 431. During this process, it is only necessary to pull the auxiliary frame 431 and the insertion rod 435 that slides through the surface of the support seat 7.

Claims

1. A car rear quarter seat that can be folded with one button, characterized in that: include: A seat base (2), a seat back frame (1) and two mounting rods (3), wherein both ends of one side of the seat base (2) are fixedly connected to mounting plates (5), a surface of one of the mounting plates (5) is fixedly connected to a rotating shaft (6), one side of the rotating shaft (6) is fixedly connected to the bottom side wall of the seat back frame (1), and the other mounting plate (5) is rotatably connected to a side of the seat back frame (1) away from the rotating shaft (6), the two mounting rods (3) are respectively located at the two ends of the seat base (2), and support seats (7) are arranged on both sides of one end of the seat base (2) away from the seat back frame (1), and an adjustment device (4) is arranged on the surface of the seat back frame (1), and the adjustment device (4) comprises a flip component (41), a limit component (42) and an auxiliary component (43).

2. The one-button foldable rear-row four-part seat of a car according to claim 1, characterized in that: The flip assembly (41) comprises a first fixed frame (4101), one side of the first fixed frame (4101) is fixedly connected to the surface of the seat back frame (1), the inner wall of the first fixed frame (4101) is rotatably connected to a first flip frame (4102), the upper surface of the seat back frame (1) is fixedly connected to a second fixed frame (4103), the inner wall of the second fixed frame (4103) is rotatably connected to a second flip frame (4104), a first shrinkable wire tube (4105) is fixedly connected to the surface of one side of the seat back frame (1) close to the rotating shaft (6), the inner wall of the first shrinkable wire tube (4105) is slidably connected to a first wire bundle (4106), a second wire bundle (4107) and a third wire bundle (4110), respectively, the second wire bundle (4107) and the third wire bundle (4110) are slidably connected to each other. 110) are fixedly connected to the first wire bundle (4106), one end of the second wire bundle (4107) close to the second fixed frame (4103) is fixedly connected to the inner wall of the second flip frame (4104), one end of the third wire bundle (4110) close to the first fixed frame (4101) is fixedly connected to the inner wall of the first flip frame (4102), one end of the rotating shaft (6) is fixedly connected to a connecting plate (4109), one end of the first wire bundle (4106) away from the first shrink wire tube (4105) is fixedly connected to the connecting plate (4109), and a positioning frame (4108) is fixedly connected to the surface of the mounting plate (5), the cross section of the positioning frame (4108) is "U"-shaped, and the inner wall of the positioning frame (4108) is slidably connected to the surface of the first wire bundle (4106).

3. The one-button foldable rear-row four-part seat of a car according to claim 1, characterized in that: The limiting assembly (42) comprises a second shrinkable wire tube (4201), the inner wall of which is slidably connected to a fourth wire harness (4202), a fifth wire harness (4203) and a sixth wire harness (4204), respectively; the fifth wire harness (4203) and the sixth wire harness (4204) are both fixedly connected to the fourth wire harness (4202); the bottom surface of one end of the seat back frame (1) away from the rotating shaft (6) is fixedly connected to an extrusion plate (4211); The extrusion plate (4211) has a convex cross-section, the surface of the mounting plate (5) is rotatably connected to the limit plate (4207) relative to the position of the extrusion plate (4211), the surface of the mounting plate (5) is rotatably connected to the limit block (4208) corresponding to the position of the limit plate (4207), the limit block (4208) and the extrusion plate (4211) are located on the same central axis, the cross-section of the limit block (4208) is inverted, and the limit block (4208) and the limit plate (4211) are connected to each other. 207), a second tension spring (4210) is fixedly connected to one side of the upper end of the limit block (4208), an end of the second tension spring (4210) away from the limit block (4208) is fixedly connected to the extrusion plate (4211), a first tension spring (4209) is fixedly connected to the bottom end of the limit block (4208), an end of the first tension spring (4209) away from the limit block (4208) is fixedly connected to the mounting plate (5), and the fourth wire harness (420 2) one end away from the second retractable wire tube (4201) is fixedly connected to the limit block (4208), and the positions of the two ends of the seat base (2) corresponding to the mounting rod (3) are rotatably connected with a rotating buckle (4205), the inner wall of the rotating buckle (4205) is snap-fitted to the surface of the mounting rod (3), and the ends of the fifth wire bundle (4203) and the sixth wire bundle (4204) away from the second retractable wire tube (4201) are respectively fixedly connected to the rotating buckle (4205).

4. The one-button foldable rear quarter-seat of a car according to claim 1, characterized in that: The auxiliary component (43) comprises an auxiliary frame (431), the upper end of the auxiliary frame (431) is fixedly connected to the lower surface of the seat base (2), the inner wall of the auxiliary frame (431) is rotatably connected to the upper end of the support seat (7), one side of the inner wall of the auxiliary frame (431) is fixedly connected to an inlay column (434), one side of the inner wall of the support seat (7) is fixedly connected to an inlay rod (433), the arc surface of the inner wall of the auxiliary frame (431) is sleeved with a coil spring (432), the two ends of the coil spring (432) are respectively fixedly connected to the inlay column (434) and the inlay rod (433), and the auxiliary frame (431) and the surface of the support seat (7) are slidably penetrated by a same insertion rod (435).

5. The one-button foldable rear-row four-part seat of a car according to claim 4, characterized in that: The cross section of the insertion rod (435) is in an "L" shape, and the long arm end of the insertion rod (435) is fixedly connected to a guide block (436), and the cross section of the guide block (436) is in a pointed cone shape.

6. The one-button foldable rear-row four-part seat of a car according to claim 4, characterized in that: The short arm end of the insertion rod (435) is fixedly connected with a protective sleeve (437), and the protective sleeve (437) is a rubber sleeve.

7. The one-button foldable rear-row four-part seat of a car according to claim 3, characterized in that: A limiting groove (4206) is provided on the surface of the mounting plate (5) at a position corresponding to the limiting plate (4207), and an inner wall of the limiting groove (4206) is slidably connected to one side of the limiting plate (4207).

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