Three-section type back row backrest framework structure and backrest angle adjusting method

Abstract

The invention relates to the technical field of automobile seats, in particular to a three-section type back row backrest framework structure and a backrest angle adjusting method.The three-section type back row backrest framework structure comprises a left mounting frame, two middle mounting frames, a right mounting frame, a left back frame, a middle back frame, a right back frame, a left fixing assembly, a middle fixing assembly, a right fixing assembly and an unlocking left fixing assembly; the left back frame is rotated towards the side close to the vehicle body, the left back frame drives the middle back frame to move towards the side close to the vehicle body, and folding of the left back frame and the middle back frame is achieved; the middle fixing assembly is unlocked, the middle back frame is rotated towards the side close to the bicycle body, and folding of the middle back frame is achieved; and the right fixing assembly is unlocked, the right back frame is rotated towards the side close to the bicycle body, and folding of the right back frame is achieved. Therefore, the problem that a backrest of an existing automobile rear-row seat is integral and cannot be singly adjusted according to actual requirements of a user is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive seats, and particularly to a three - section rear - row backrest frame structure and a backrest angle adjustment method. Background Art

[0002] To meet the purpose that the rear - row seats can be used for sitting and lying down as needed, and at the same time not affect the maximum utilization of the trunk space when needed, the backrests of automotive rear - row seats usually have the functions of being folded down and retracted. For this reason, a backrest lock is often provided between the automotive rear - row seat and the vehicle body, and a handle is used to adjust the backrest lock, so as to realize the functions of folding down and retracting the backrest of the rear - row seat.

[0003] Currently, most of the backrests of existing automotive rear - row seats are integral. When the backrest needs to be folded down, it can only be folded down as a whole and cannot be adjusted individually according to the actual needs of users, resulting in a reduction in the practicality of the rear - row seats. Summary of the Invention

[0004] The purpose of the present invention is to provide a three - section rear - row backrest frame structure and a backrest angle adjustment method, aiming to solve the problem that the backrests of existing automotive rear - row seats are integral and cannot be adjusted individually according to the actual needs of users.

[0005] To achieve the above - mentioned purpose, in the first aspect, the present invention provides a three - section rear - row backrest frame structure, which includes a left mounting frame, two middle mounting frames, a right mounting frame, a left backrest frame, a middle backrest frame, a right backrest frame, a left fixing component, a middle fixing component, and a right fixing component;

[0006] The left mounting frame, the two middle mounting frames, and the right mounting frame are all mounted on the vehicle body. The left backrest frame is mounted between the left mounting frame and the middle mounting frame. The middle backrest frame is mounted between the two middle mounting frames. The right backrest frame is mounted between the middle mounting frame and the right mounting frame. The left fixing component is mounted on the left backrest frame. The middle fixing component is mounted on the middle backrest frame. The right fixing component is mounted on the right backrest frame.

[0007] Among them, the left fixing component includes a fixing frame one, a limit lock one, and a pulling handle one. The fixing frame one is mounted on the vehicle body. The limit lock one is mounted on the left backrest frame. The pulling handle one is mounted on the left backrest frame and is connected to the limit lock one.

[0008] Among them, the middle fixing component includes a fixing rod, a limit lock three, and a pulling belt. The fixing rod is fixedly connected to the left backrest frame and is located on the left backrest frame. The limit lock three is mounted on the middle backrest frame. The pulling belt is connected to the limit lock and is located on one side of the limit lock three.

[0009] Among them, the right fixing component includes a second fixing frame, a second limit lock, and a second pulling handle. The second fixing frame is installed on the vehicle body, the second limit lock is installed on the right backrest frame, and the second pulling handle is installed on the right backrest frame and connected to the second limit lock.

[0010] Among them, the first pulling handle includes a cable and a pulling plate. The cable is fixedly connected to the first limit lock and is located on one side of the first limit lock. The pulling plate is fixedly connected to the cable, rotatably connected to the left backrest frame, and is located on the left backrest frame.

[0011] In a second aspect, a method for adjusting the backrest angle of a three-section rear backrest frame structure is used for the three-section rear backrest frame structure described in the first aspect, and includes the following steps:

[0012] Unlock the left fixing component, rotate the left backrest frame towards the side close to the vehicle body, and the left backrest frame drives the middle backrest frame to move towards the side close to the vehicle body to realize the folding of the left backrest frame and the middle backrest frame;

[0013] Unlock the middle fixing component, rotate the middle backrest frame towards the side close to the vehicle body to realize the folding of the middle backrest frame;

[0014] Unlock the right fixing component, rotate the right backrest frame towards the side close to the vehicle body to realize the folding of the right backrest frame.

[0015] In a three-section rear backrest frame structure of the present invention, the left mounting frame and the middle mounting frame provide installation conditions for the left backrest frame, the two middle mounting frames provide installation conditions for the middle backrest frame, and the middle mounting frame and the right mounting frame provide installation conditions for the right backrest frame. Unlock the left fixing component, rotate the left backrest frame towards the side close to the vehicle body, and the left backrest frame drives the middle backrest frame to move towards the side close to the vehicle body to realize the folding of the left backrest frame and the middle backrest frame; unlock the middle fixing component, rotate the middle backrest frame towards the side close to the vehicle body to realize the folding of the middle backrest frame; unlock the right fixing component, rotate the right backrest frame towards the side close to the vehicle body to realize the folding of the right backrest frame. Thereby, the problem that the backrest of the existing automobile rear seat is integral and cannot be individually adjusted according to the actual needs of users is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1It is a schematic structural diagram of a three - section rear row backrest frame structure provided by the present invention.

[0018] Figure 2 It is a flowchart of a method for adjusting the backrest angle of a three - section rear row backrest frame structure provided by the present invention.

[0019] In the figure: 1 - left mounting frame, 2 - middle mounting frame, 3 - right mounting frame, 4 - left backrest frame, 5 - middle backrest frame, 6 - right backrest frame, 7 - first fixing frame, 8 - first limit lock, 9 - fixing rod, 10 - third limit lock, 11 - pulling belt, 12 - second fixing frame, 13 - second limit lock, 14 - second pulling handle part, 15 - cable, 16 - pulling plate. Detailed implementation manners

[0020] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation of the present invention.

[0021] Please refer to Figure 1 , in the first aspect, the present invention provides a three - section rear row backrest frame structure, including a left mounting frame 1, two middle mounting frames 2, a right mounting frame 3, a left backrest frame 4, a middle backrest frame 5, a right backrest frame 6, a left fixing component, a middle fixing component and a right fixing component;

[0022] The left mounting frame 1, the two middle mounting frames 2 and the right mounting frame 3 are all mounted on the vehicle body. The left backrest frame 4 is mounted between the left mounting frame 1 and the middle mounting frame 2. The middle backrest frame 5 is mounted between the two middle mounting frames 2. The right backrest frame 6 is mounted between the middle mounting frame 2 and the middle mounting frame 2. The left fixing component is mounted on the left backrest frame 4. The middle fixing component is mounted on the middle backrest frame 5. The right fixing component is mounted on the right backrest frame 6.

[0023] In this embodiment, the left mounting bracket 1 and the middle mounting bracket 2 provide the mounting conditions for the left backrest 4, the two middle mounting brackets 2 provide the mounting conditions for the middle backrest 5, and the middle mounting bracket 2 and the right mounting bracket 3 provide the mounting conditions for the right backrest 6. Unlock the left fixing component, rotate the left backrest 4 towards the vehicle body, and the left backrest 4 drives the middle backrest 5 to move towards the vehicle body to fold the left backrest 4 and the middle backrest 5; unlock the middle fixing component, rotate the middle backrest 5 towards the vehicle body to fold the middle backrest 5; unlock the right fixing component, rotate the right backrest 6 towards the vehicle body to fold the right backrest 6. Thus, the problem that the backrest of the existing rear seat of an automobile is integral and cannot be adjusted individually according to the actual needs of users is solved.

[0024] Further, the left fixing component includes a fixing bracket one 7, a limit lock one 8 and a pull handle one. The fixing bracket one 7 is installed on the vehicle body, the limit lock one 8 is installed on the left backrest 4, and the pull handle one is installed on the left backrest 4 and is connected to the limit lock one 8.

[0025] In this embodiment, the fixing bracket one 7 and the limit lock can limit the left backrest 4, and pulling the pull handle one can drive the limit lock one 8 to release the limit on the left backrest 4.

[0026] Further, the middle fixing component includes a fixing rod 9, a limit lock three 10 and a pull belt 11. The fixing rod 9 is fixedly connected to the left backrest 4 and is located on the left backrest 4. The limit lock three 10 is installed on the middle backrest 5, and the pull belt 11 is connected to the limit lock and is located on one side of the limit lock three 10.

[0027] In this embodiment, the fixing rod 9 and the limit lock three 10 can limit the middle backrest 5, and pulling the pull belt 11 can release the limit on the middle backrest 5.

[0028] Further, the right fixing component includes a fixing bracket two 12, a limit lock two 13 and a pull handle two 14. The fixing bracket two 12 is installed on the vehicle body, the limit lock two 13 is installed on the right backrest 6, and the pull handle two 14 is installed on the right backrest 6 and is connected to the limit lock two 13.

[0029] In this embodiment, the fixing bracket two 12 and the limit lock two 13 can limit the right backrest 6. The pull handle two 14 has the same structure as the pull handle one. Pulling the pull handle two 14 can drive the limit lock two 13 to release the limit on the right backrest.

[0030] Further, the first handle member includes a cable 15 and a pull plate 16. The cable 15 is fixedly connected to the first limit lock 8 and is located on one side of the first limit lock 8. The pull plate 16 is fixedly connected to the cable 15, is rotatably connected to the left backrest frame 4, and is located on the left backrest frame 4.

[0031] In this embodiment, rotating the pull plate 16 can drive the cable 15 to contract, and the contraction of the cable 15 can drive the first limit lock 8 to release the limit on the left backrest.

[0032] Please refer to Figure 2 , second aspect, a method for adjusting the backrest angle of a three - section rear backrest frame structure, which is used for the three - section rear backrest frame structure described in the first aspect, includes the following steps:

[0033] S1 Unlock the left fixing component, rotate the left backrest frame 4 towards the side close to the vehicle body, and the left backrest frame 4 drives the middle backrest frame 5 to move towards the side close to the vehicle body, realizing the folding of the left backrest frame 4 and the middle backrest frame 5;

[0034] Specifically, pull the pull plate 16, the pull plate 16 drives the cable 15 to contract, the cable 15 drives the first limit lock 8 to release the limit on the left backrest, rotate the left backrest frame 4 towards the side close to the vehicle body, and the left backrest frame 4 drives the middle backrest frame 5 to move towards the side close to the vehicle body, realizing the folding of the left backrest frame 4 and the middle backrest frame 5.

[0035] S2 Unlock the middle fixing component, rotate the middle backrest frame 5 towards the side close to the vehicle body, realizing the folding of the middle backrest frame 5;

[0036] Specifically, pull the pull belt 11, the pull belt 11 drives the third limit lock 10 to release the limit on the middle backrest frame 5, rotate the middle backrest frame 5 towards the side close to the vehicle body, realizing the folding of the middle backrest frame 5.

[0037] S3 Unlock the right fixing component, rotate the right backrest frame 6 towards the side close to the vehicle body, realizing the folding of the right backrest frame 6.

[0038] Specifically, pull the second handle member 14, the second handle member 14 drives the second limit lock 13 to release the limit on the right backrest frame 6, release the limit on the right backrest frame 6, rotate the right backrest frame 6 towards the side close to the vehicle body, realizing the folding of the right backrest frame 6.

[0039] The above - disclosed is only a preferred embodiment of a three - section rear backrest frame structure and a method for adjusting the backrest angle of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Those of ordinary skill in the art can understand all or part of the processes of implementing the above - mentioned embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. A three-section rear seat backrest frame structure, characterized in that: It includes a left mounting frame, two middle mounting frames, a right mounting frame, a left back frame, a middle back frame, a right back frame, a left fixing assembly, a middle fixing assembly and a right fixing assembly; The left mounting frame, the two middle mounting frames and the right mounting frame are all mounted on the vehicle body, the left back frame is mounted between the left mounting frame and the middle mounting frame, the middle back frame mounting assembly is between the two middle mounting frames, the right back frame is mounted between the middle mounting frame and the middle mounting frame, the left fixing assembly is mounted on the left back frame, the middle fixing assembly is mounted on the middle back frame, and the right fixing assembly is mounted on the right back frame.

2. The three-section rear seat back frame structure according to claim 1, characterized in that: The left fixing assembly comprises a fixing frame, a limit lock and a pull handle, wherein the fixing frame is mounted on the vehicle body, the limit lock is mounted on the left back frame, and the pull handle is mounted on the left back frame and connected to the limit lock.

3. The three-section rear seat back frame structure according to claim 1, characterized in that: The middle fixing assembly includes a fixing rod, a limit lock three and a drawstring, the fixing rod is fixedly connected to the left back frame and is located on the left back frame, the limit lock three is installed on the middle back frame, and the drawstring is connected to the limit lock and is located on one side of the limit lock three.

4. The three-section rear seat back frame structure according to claim 1, characterized in that: The right fixing assembly includes a second fixing frame, a second limiting lock and a second pull handle. The second fixing frame is installed on the vehicle body, the second limiting lock is installed on the right back frame, and the second pull handle is installed on the right back frame and connected to the second limiting lock.

5. The three-section rear seat back frame structure according to claim 2, characterized in that: The pull handle member 1 includes a pull cable and a pull plate, the pull cable is fixedly connected to the limit lock 1 and is located on one side of the limit lock 1, the pull plate is fixedly connected to the pull cable, is rotatably connected to the left back frame, and is located on the left back frame.

6. A method for adjusting the backrest angle of a three-stage rear seat backrest frame structure, used for the three-stage rear seat backrest frame structure according to any one of claims 1 to 5, characterized in that: The following steps are involved: Unlock the left fixing assembly and rotate the left back frame toward the side close to the vehicle body. The left back frame drives the middle back frame to move toward the side close to the vehicle body, so that the left back frame and the middle back frame are folded. Unlock the middle fixing assembly and rotate the middle back frame toward the side close to the vehicle body to fold the middle back frame; unlock the right fixing assembly and rotate the right back frame toward the side close to the vehicle body to fold the right back frame.

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