Backrest framework structure of automobile seat

Abstract

The utility model relates to a backrest skeleton structure of an automobile seat, which comprises side arm skeletons, a lower support frame and a U-shaped rod, the two side arm skeletons are stacked at the two ends of the lower support frame, the U-shaped rod is arranged between the upper ends of the two side arm skeletons, and the U-shaped rod is connected with the lower support frame. The two ends of the U-shaped rod are inserted into the upper ends of the two side arm frameworks and fixed through welding, the lower supporting frame is of an arc-shaped sheet-shaped structure with the front portion and the rear portion bent upwards, butt joint openings are formed in the two ends of the lower supporting frame, the butt joint openings wrap the edges of the lower ends of the side arm frameworks, and the lower supporting frame is of a U-shaped structure with the front portion and the rear portion bent upwards. The lower side of the butt joint position of the side arm framework and the lower supporting frame is provided with a clearance hollow. The chair back framework has the characteristics that the overall cost of the chair back framework is reduced, the structural strength of the chair back framework is ensured, and the assembly of the chair back framework is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a seat back frame structure of an automobile seat. Background Art

[0002] The conventional car seat back frame is directly connected to the seat surface frame of the car seat through sheet metal. Since the seat back frame needs to rotate, in order to avoid interference between the seat back frame and the seat surface frame, the support frame is usually not installed on the lower part of the seat back frame. In this case, in order to improve the overall structural strength of the seat back frame, a large number of reinforcing structures need to be added to the middle and upper parts of the seat back frame, which will greatly increase the cost of the seat back frame. In order to solve the above problems, the seat back frame needs to be improved. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a seat back frame structure for an automobile seat, which has the characteristics of reducing the overall cost of the seat back frame, ensuring the structural strength of the seat back frame, and simplifying the assembly of the seat back frame.

[0004] The technical solution adopted by the present invention to solve its technical problems is: to provide a seat back frame structure of an automobile seat, including a side arm frame, a lower support frame and a U-shaped rod, the two ends of the lower support frame are stacked to form two side arm frames, a U-shaped rod is installed between the upper ends of the two side arm frames, the two ends of the U-shaped rod are inserted into the upper ends of the two side arm frames and fixed by welding, the lower support frame as a whole is an arc-shaped sheet structure with the front and rear parts bent upward, the two ends of the lower support frame are provided with docking openings, the docking openings are wrapped around the lower end edges of the side arm frames, and the lower side of the docking point of the side arm frames and the lower support frame is provided with an air-avoiding gap.

[0005] In this technical solution, a lower support frame with an arc-shaped sheet structure is provided to improve the overall structural strength of the chair back frame, save overall costs, and at the same time, the component is lightweighted to reduce the overall weight of the chair back frame. At the same time, by providing a docking opening, the side arm frame and the lower support frame are conveniently fitted and docked, which is convenient for workers to assemble. By providing air-avoidance and leakage, the chair back frame is prevented from interfering with the seat frame when rotating, thereby ensuring normal adjustment of the chair back.

[0006] As a supplement to the present technical solution, two concave structures are arranged side by side in the middle of the upper end of the U-shaped rod, and a vertically arranged headrest plug-in frame is welded on the concave structure. The concave structure is provided to improve the installation strength of the headrest plug-in frame.

[0007] As a supplement to the present technical solution, a straight-line reinforcing rib is provided on the middle bottom surface of the lower support frame, and arc-shaped ribs are provided along the arc surface inside both ends of the lower support frame. The reinforcing ribs and arc-shaped ribs are provided to improve the overall structural strength of the lower support frame.

[0008] As a supplement to the present technical solution, two side arm frame welding through holes are provided at the rear side of the docking opening of the lower support frame. By providing the side arm frame welding through holes, the docking of the lower support frame and the side arm frame is facilitated.

[0009] As a supplement to the present technical solution, the front and rear edges of the side arm frame are provided with extension structures extending toward the lower support frame. The upper end of the side arm frame and the upper ends of the two extension structures form an insertion interface with three docking surfaces. The insertion interface is provided to facilitate the insertion and docking of the U-shaped rod.

[0010] As a supplement to the present technical solution, rectangular recesses are provided on the three docking surfaces of the plug interface, and welding holes are provided in the rectangular recesses. The structural strength of the docking position is improved by providing three rectangular recesses, and welding holes are provided to facilitate quick welding.

[0011] As a supplement to the present technical solution, a side arm reinforcement rib is provided on the extension structure on the rear side of the side arm frame and is arranged along the extension structure.

[0012] Beneficial effects: The utility model relates to a seat back frame structure for a car seat. By providing a lower support frame with an arc-shaped sheet structure, the overall strength of the seat back frame is improved while saving overall costs. At the same time, the component is lightweighted to reduce the overall weight of the seat back frame. At the same time, by providing a docking opening, the side arm frame and the lower support frame are conveniently fitted and docked, which is convenient for workers to assemble. By providing air-avoiding and leaking spaces, the seat back frame is prevented from interfering with the seat surface frame when rotating, ensuring normal adjustment of the seat back. It has the characteristics of reducing the overall cost of the seat back frame, ensuring the structural strength of the seat back frame, and simplifying the assembly of the seat back frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural view of the utility model;

[0014] Figure 2 It is the main view of the utility model;

[0015] Figure 3 It is a top view of the utility model;

[0016] Figure 4 It is a top view of the lower support frame described in the utility model;

[0017] Figure 5 It is a rear view of the lower support frame of the utility model;

[0018] Figure 6 This is a front view of the side arm skeleton described in the utility model;

[0019] Figure 7 It is a left side view of the side arm skeleton described in the utility model;

[0020] Figure 8 It is a rear view of the side arm skeleton described in the utility model;

[0021] Figure 9 It is a right side view of the side arm skeleton described in the utility model.

[0022] Diagram: 1. Lower support frame, 2. Side arm frame, 3. U-shaped rod, 4. Headrest plug-in frame, 5. Concave structure, 6. Avoid air leakage, 7. Reinforcement ribs, 8. Arc-shaped ribs, 9. Docking opening, 10. Side arm frame welding through hole, 11. Extended edge structure, 12. Plug interface, 13. Rectangular concave, 14. Welding through hole, 15. Side arm reinforcement ribs. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that such equivalents also fall within the scope of the claims appended hereto.

[0024] The embodiment of the present utility model relates to a seat back frame structure of a car seat, such as Figure 1 —5 shows, it includes a side arm frame 2, a lower support frame 1 and a U-shaped rod 3, the two ends of the lower support frame 1 are stacked to install two side arm frames 2, a U-shaped rod 3 is installed between the upper ends of the two side arm frames 2, the two ends of the U-shaped rod 3 are inserted into the upper ends of the two side arm frames 2 and fixed by welding, the lower support frame 1 is an arc-shaped sheet structure with the front and rear parts bent upward, the two ends of the lower support frame 1 are provided with docking openings 9, the docking openings 9 are wrapped at the lower end edge of the side arm frame 2, and the lower side of the docking point of the side arm frame 2 and the lower support frame 1 is provided with an air-avoiding gap 6.

[0025] In this technical solution, by providing a lower support frame 1 with an arc-shaped sheet structure, the overall strength of the chair back frame is improved, the overall cost is saved, and the component is lightweighted to reduce the overall weight of the chair back frame. At the same time, by providing a docking opening 9, the side arm frame 2 and the lower support frame 1 are conveniently fitted and docked, which is convenient for workers to assemble. By providing an air-avoiding gap 6, the chair back frame is prevented from interfering with the seat frame when rotating, thereby ensuring normal adjustment of the chair back.

[0026] As a supplement to the present technical solution, two concave structures 5 are arranged side by side in the middle of the upper end of the U-shaped rod 3, and a vertically arranged headrest plug-in frame 4 is welded on the concave structure 5. The concave structure 5 is provided to improve the installation strength of the headrest plug-in frame 4.

[0027] As a supplement to the present technical solution, a straight-line reinforcing rib 7 is provided on the middle bottom surface of the lower support frame 1, and arc-shaped ribs 8 arranged along the arc surface are provided inside both ends of the lower support frame 1. The reinforcing rib 7 and the arc-shaped rib 8 are provided to improve the overall structural strength of the lower support frame 1.

[0028] As a supplement to the present technical solution, two side arm frame welding through holes 10 are provided at the rear side of the docking opening 9 of the lower support frame 1. By providing the side arm frame welding through holes 10, the docking of the lower support frame 1 and the side arm frame 2 is facilitated.

[0029] like Figure 6 As shown in FIG9 , as a supplement to the present technical solution, the front and rear edges of the side arm skeleton 2 are provided with an extension structure 11 extending toward the lower support frame 1, and the upper end of the side arm skeleton 2 and the upper ends of the two extension structures 11 form an insertion interface 12 with three docking surfaces, and the insertion interface 12 is provided to facilitate the insertion and docking of the U-shaped rod 3.

[0030] As a supplement to the present technical solution, rectangular recesses 13 are provided on the three docking surfaces of the plug interface 12, and welding through holes 14 are provided in the rectangular recesses 13. The structural strength of the docking position is improved by providing three rectangular recesses 13, and welding through holes 14 are provided to facilitate quick welding.

[0031] As a supplement to the present technical solution, a side arm reinforcement rib 15 arranged along the extension structure 11 is provided on the rear side of the side arm skeleton 2 .

[0032] Example

[0033] When docking, first install the upper side arm frame 2 on both ends of the lower support frame 1, and the extended structure 11 at the lower end of the side arm frame 2 and the docking wall of the docking opening 9 are fitted together. After completion, weld and fix them through the two side arm frame welding holes 10. After completion, insert the two ends of the U-shaped rod 3 into the plug-in interfaces 12 of the two side arm frames 2. The three rectangular recesses 13 on the plug-in interfaces 12 support the U-shaped rod 3. After completion, weld and connect them through the welding holes 14 on the rectangular recesses 13. Finally, weld the headrest plug-in frame 4 to the recessed structure 5 to complete the assembly of the chair back frame.

[0034] The above is a detailed introduction to the seat back frame structure of a car seat provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A seat back frame structure for an automobile seat, characterized in that: The invention comprises a side arm frame (2), a lower support frame (1) and a U-shaped rod (3), wherein two side arm frames (2) are stacked at both ends of the lower support frame (1), a U-shaped rod (3) is installed between the upper ends of the two side arm frames (2), the two ends of the U-shaped rod (3) are inserted into the upper ends of the two side arm frames (2) and fixed by welding, the lower support frame (1) is an arc-shaped sheet structure with the front and rear parts bent upward, the two ends of the lower support frame (1) are provided with docking openings (9), the docking openings (9) are wrapped at the lower end edges of the side arm frames (2), and the lower side of the docking point of the side arm frames (2) and the lower support frame (1) is provided with an air-avoiding gap (6).

2. The seat back frame structure of a car seat according to claim 1, characterized in that: Two concave structures (5) are arranged side by side in the middle of the upper end of the U-shaped rod (3), and a vertically arranged headrest plug-in frame (4) is welded to the concave structure (5).

3. The seat back frame structure of a car seat according to claim 1, characterized in that: A straight-line reinforcing rib (7) is provided on the middle bottom surface of the lower support frame (1), and arc-shaped ribs (8) arranged along the arc surface are provided inside both ends of the lower support frame (1).

4. The seat back frame structure of an automobile seat according to claim 1, characterized in that: Two side arm frame welding through holes (10) are provided at the rear side of the docking opening (9) of the lower support frame (1).

5. The seat back frame structure of an automobile seat according to claim 1, characterized in that: The front and rear edges of the side arm frame (2) are both provided with extension structures (11) extending toward the lower support frame (1), and the upper end of the side arm frame (2) and the upper ends of the two extension structures (11) form an insertion interface (12) with three docking surfaces.

6. The seat back frame structure of an automobile seat according to claim 5, characterized in that: The three docking surfaces of the plug interface (12) are all provided with rectangular recesses (13), and welding through holes (14) are provided in the rectangular recesses (13).

7. The seat back frame structure of an automobile seat according to claim 5, characterized in that: A side arm reinforcement rib (15) arranged along the side extension structure (11) is provided on the rear side of the side arm frame (2).

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