Four-connecting-rod adjusting structure for automobile backrest of seat

Abstract

The utility model relates to the technical field of automobile seats, in particular to a seat automobile backrest four-connecting-rod adjusting structure which comprises a backrest body, a rotating shaft, a long connecting rod, a short connecting rod, two driven rods and a connecting frame. When the backrest body is adjusted, the backrest body drives the long connecting rod to rotate through the rotating shaft, the long connecting rod drives the short connecting rod to rotate, the short connecting rod drives the two driven rods to rotate towards the side close to the connecting frame, the backrest body is limited, and the situation that the backrest body exceeds the preset range during adjustment, and consequently the backrest body occupies the rear row carrying space is prevented; therefore, the problem that an existing seat backrest occupies a large amount of rear row space when being put down is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile seat, especially to a four-bar linkage adjusting structure of seat automobile backrest. BACKGROUND

[0002] With the progress of society, people's living standards are improving, and cars have become the preferred means of transportation for people. The seat of the car not only needs to ensure the safety of the passengers, but also needs to meet the needs of the passengers for riding comfort.

[0003] At present, the rotating shaft position of the traditional hinge type adjusting mechanism is fixed when the backrest is laid down, which causes the seat backrest to present a straight line type motion trajectory when it is inclined backward. This design makes the laid backrest form a clear angle with the trunk plane, resulting in a large amount of rear space occupied by the backrest, and further reducing the user's experience. SUMMARY

[0004] The utility model aims at providing a four-bar linkage adjusting structure of seat automobile backrest, which aims to solve the problem that the existing seat backrest occupies a large amount of rear space when it is laid down.

[0005] To achieve the above-mentioned purpose, the utility model provides a four-bar linkage adjusting structure of seat automobile backrest, which comprises a backrest body, a rotating shaft, a long connecting rod, a short connecting rod, two driven rods and a connecting frame. The rotating shaft is installed on one side of the backrest body and connected with the seat cushion. The long connecting rod is rotationally connected with the rotating shaft and located on one side of the rotating shaft. The short connecting rod is rotationally connected with the long connecting rod and located on one side of the long connecting rod away from the rotating shaft. Two driven rods are respectively rotationally connected with the short connecting rod and located on one side of the short connecting rod away from the long connecting rod. The connecting frame is rotationally connected with the two driven rods and fixedly connected with the vehicle body.

[0006] Among them, the backrest body has two adjusting rods and a neck pillow. The two adjusting rods are respectively installed on the backrest body, and the neck pillow is installed on the two adjusting rods.

[0007] Among them, the four-bar linkage adjusting structure of seat automobile backrest further comprises a lock catch and a limiting lock. The lock catch is fixedly connected with the long connecting rod and located on the long connecting rod. The limiting lock is installed on the backrest body.

[0008] Among them, the four-bar linkage adjusting structure of seat automobile backrest further comprises a cable, a rotating block, a limiting block and a clamping block. The rotating block is rotationally connected with the seat cushion and located on the seat cushion. The cable is fixedly connected with the rotating block. The limiting block is rotationally connected with the seat cushion and located on one side of the seat cushion close to the rotating block. The clamping block is installed on the backrest body.

[0009] The seat automobile backrest four-connecting-rod adjusting structure further comprises a reset tension spring, one end of the reset tension spring is installed on the rotating block, and the other end is installed on the seat cushion.

[0010] The seat automobile backrest four-connecting-rod adjusting structure of the utility model, including backrest body, rotating shaft, long connecting rod, short connecting rod, two driven rods and connecting frame, the rotating shaft is installed in one side of the backrest body, and is connected with the seat cushion, the long connecting rod is rotatably connected with the rotating shaft, and is located in one side of the rotating shaft, the short connecting rod is rotatably connected with the long connecting rod, and is located in one side of the long connecting rod away from the rotating shaft, two driven rods are rotatably connected with the short connecting rod, and are located in one side of the short connecting rod away from the long connecting rod, the connecting frame is rotatably connected with two driven rods, and is fixedly connected with the vehicle body. The backrest body provides installation conditions for the rotating shaft, the backrest body can be installed on the vehicle body through the rotating shaft, and the backrest body rotates, when the backrest body is adjusted, the backrest body drives the long connecting rod to rotate through the rotating shaft, the long connecting rod drives the short connecting rod to rotate, the short connecting rod drives two driven rods to rotate to one side close to the connecting frame, and the backrest body is limited, so that the backrest body is prevented from exceeding the preset range during adjustment, the backrest body occupies the rear row of load space, and thus the problem that the existing seat backrest occupies a large amount of rear row space when being laid down is solved. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced.

[0012] Fig. 1 It is a structure schematic view of the seat automobile backrest four-connecting-rod adjusting structure.

[0013] Fig. 2 It is another direction structure schematic view of the seat automobile backrest four-connecting-rod adjusting structure.

[0014] In the figure: 1-backrest body, 2-rotating shaft, 3-long connecting rod, 4-short connecting rod, 5-driven rod, 6-connecting frame, 7-adjusting rod, 8-neck pillow, 9-lock, 10-limiting lock, 11-pulley cable, 12-rotating block, 13-limiting block, 14-clamping block, 15-reset tension spring, 16-seat cushion. DETAILED DESCRIPTION

[0015] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to be illustrative of the present application and are not to be construed as limiting the present application.

[0016] Please refer to Figs. 1-2 The utility model provides a seat car backrest four connecting rod adjusting structure, including backrest body 1, rotating shaft 2, long connecting rod 3, short connecting rod 4, two driven rods 5 and connecting frame 6, rotating shaft 2 is installed in one side of backrest body 1, and is connected with cushion 16, long connecting rod 3 is connected with rotating shaft 2, and is located in one side of rotating shaft 2, short connecting rod 4 is connected with long connecting rod 3, and is located in one side of long connecting rod 3 away from rotating shaft 2, two driven rods 5 are connected with short connecting rod 4 respectively, and are located in one side of short connecting rod 4 away from long connecting rod 3, connecting frame 6 is connected with two driven rods 5, and is fixedly connected with vehicle body.

[0017] In the embodiment, the backrest body 1 provides installation conditions for the rotating shaft 2, and the backrest body 1 can be installed on the vehicle body through the rotating shaft 2 for rotation of the backrest body 1. When adjusting the backrest body 1, the backrest body 1 drives the long connecting rod 3 to rotate through the rotating shaft 2, the long connecting rod 3 drives the short connecting rod 4 to rotate, and the short connecting rod 4 drives the two driven rods 5 to rotate towards the side close to the connecting frame 6 to limit the backrest body 1 and prevent the backrest body 1 from exceeding the preset range during adjustment, thereby preventing the backrest body 1 from occupying the rear row of space and solving the problem that the existing seat backrest occupies a large amount of rear row space when being folded down.

[0018] Further, the backrest body 1 has two adjusting rods 7 and a neck pillow 8, and the two adjusting rods 7 are installed on the backrest body 1, and the neck pillow 8 is installed on the two adjusting rods 7.

[0019] In the embodiment, the two adjusting rods 7 provide installation conditions for the neck pillow 8, and the position of the neck pillow 8 can be adjusted through the two adjusting rods 7, and the neck of the user can be supported through the neck pillow 8.

[0020] Further, the seat car backrest four connecting rod adjusting structure further includes a lock catch 9 and a limiting lock 10, the lock catch 9 is fixedly connected with the long connecting rod 3 and located on the long connecting rod 3, and the limiting lock 10 is installed on the backrest body 1.

[0021] In the embodiment, the backrest body 1 is fixed on the long connecting rod 3 by matching the lock catch 9 with the limiting lock 10.

[0022] Further, the seat automobile backrest four connecting rod adjusting structure further comprises a cable 11, a rotating block 12, a limiting block 13 and a clamping block 14, the rotating block 12 is rotatably connected with the cushion 16 and is located on the cushion 16, the cable 11 is fixedly connected with the rotating block 12, the limiting block 13 is rotatably connected with the cushion 16 and is located on a side of the cushion 16 close to the rotating block 12, and the clamping block 14 is installed on the backrest body 1.

[0023] In the embodiment, pulling the cable 11 can drive the rotating block 12 to rotate on the cushion 16, the rotating of the rotating block 12 can drive the limiting block 13 to rotate, and the limiting of the clamping block 14 is released, at this time, the backrest body 1 can be rotated to be folded, and the backrest body 1 can be limited by resetting the clamping block 14.

[0024] Further, the seat automobile backrest four connecting rod adjusting structure further comprises a reset tension spring 15, one end of the reset tension spring 15 is installed on the rotating block 12, and the other end is installed on the cushion 16.

[0025] In the embodiment, loosening the cable 11, the reset tension spring 15 can reset the rotating block 12 by the elastic force.

[0026] When adjusting the backrest body 1, the backrest body 1 drives the long connecting rod 3 to rotate through the rotating shaft 2, the long connecting rod 3 drives the short connecting rod 4 to rotate, the short connecting rod 4 drives the two driven rods 5 to rotate to a side close to the connecting frame 6, and the backrest body 1 is limited, so that the backrest body 1 is prevented from exceeding a preset range when being adjusted, and the backrest body 1 occupies the rear row load space, thereby solving the problem that the existing seat backrest occupies a large amount of rear row space when being folded.

[0027] The above only discloses one or more preferred embodiments of the present application, and cannot limit the scope of the rights of the present application, and those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A four-link adjusting structure of a seat backrest, characterized in that, it comprises a backrest body, a rotating shaft, a long link, a short link, two driven links and a connecting frame; the rotating shaft is installed on one side of the backrest body and connected with a seat cushion, the long link is rotationally connected with the rotating shaft and located on one side of the rotating shaft, the short link is rotationally connected with the long link and located on a side of the long link away from the rotating shaft, the two driven links are respectively rotationally connected with the short link and located on a side of the short link away from the long link, and the connecting frame is rotationally connected with the two driven links and fixedly connected with a vehicle body.

2. The four-link adjusting structure of a seat backrest according to claim 1, characterized in that, the backrest body is provided with two adjusting rods and a neck pillow, the two adjusting rods are respectively installed on the backrest body, and the neck pillow is installed on the two adjusting rods.

3. The four-link adjusting structure of a seat backrest according to claim 1, characterized in that, the four-link adjusting structure of a seat backrest further comprises a lock catch and a limiting lock, the lock catch is fixedly connected with the long link and located on the long link, and the limiting lock is installed on the backrest body.

4. The four-link adjusting structure of a seat backrest according to claim 3, characterized in that, the four-link adjusting structure of a seat backrest further comprises a pull cable, a rotating block, a limiting block and a clamping block, the rotating block is rotationally connected with the seat cushion and located on the seat cushion, the pull cable is fixedly connected with the rotating block, the limiting block is rotationally connected with the seat cushion and located on a side of the seat cushion close to the rotating block, and the clamping block is installed on the backrest body.

5. The four-link adjusting structure of a seat backrest according to claim 4, characterized in that, the four-link adjusting structure of a seat backrest further comprises a reset tension spring, one end of the reset tension spring is installed on the rotating block, and the other end is installed on the seat cushion.

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