Backrest framework for automobile seat

Abstract

The backrest framework for the automobile seat comprises a back plate and an annular supporting frame, the back plate is welded and fixed to the rear side of the supporting frame, and the left side and the right side of the lower end of the supporting frame are welded and fixed to a rotating frame on one angle adjuster respectively; the backrest framework further comprises a vertically-arranged connecting rod, the connecting rod is located on the inner side of the supporting frame, a step-shaped first notch is formed in the upper end of the connecting rod, a step-shaped second notch is formed in the lower end of the connecting rod, the first notch and the upper side edge of the supporting frame are embedded, welded and fixed, and the second notch and the lower side edge of the supporting frame are embedded, welded and fixed. The back plate is also welded and fixed with the rear side wall of the connecting rod; the utility model has the advantages of high structural stability and strong anti-deformation capability.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seat accessories, in particular to a backrest frame for an automobile seat. Background Art

[0002] The backrest frame of a car seat is an important component of a car seat. The backrest frames of car seats currently on the market include a back plate and a ring-shaped support frame. The back plate is welded and fixed to the rear side of the support frame, and the left and right sides of the lower end of the support frame are respectively welded and fixed to a rotating frame on one of the angle adjusters. In this backrest frame structure, since the support frame is only a frame-shaped structure, the support frame is easily deformed during use, that is, there is a disadvantage of poor stability of the backrest frame structure. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a backrest frame for a car seat, which has the advantages of high structural stability and strong anti-deformation ability.

[0004] The utility model provides a backrest frame for a car seat, comprising a back plate and a ring-shaped support frame, the back plate is welded and fixed to the rear side of the support frame, and the left and right sides of the lower end of the support frame are respectively welded and fixed to a rotating frame on one of the angle adjusters; the backrest frame also includes a vertically arranged connecting rod, the connecting rod is located on the inner side of the support frame, the upper end of the connecting rod is provided with a first step-shaped notch, the lower end of the connecting rod is provided with a second step-shaped notch, the first notch is embedded and welded to the upper side of the support frame, the second notch is embedded and welded to the lower side of the support frame, and the back plate is also welded and fixed to the rear side wall of the connecting rod.

[0005] The utility model arranges a connecting rod, and the upper end of the connecting rod is provided with a first step-shaped notch, and the lower end of the connecting rod is provided with a second step-shaped notch. The first notch is embedded and welded to the upper side of the support frame, and the second notch is embedded and welded to the lower side of the support frame, thereby improving the deformation resistance of the support frame and further improving the structural stability of the backrest frame. In addition, since the back plate is also welded and fixed to the rear side wall of the connecting rod, the fixing firmness of the back plate and the support frame can be further improved.

[0006] In a possible embodiment, the backrest frame also includes an "L"-shaped connecting plate, one end of which is welded and fixed to the rear side of the lower end of the connecting rod, and the other end of the connecting plate is welded and fixed to the rear side of the lower side of the support frame; by setting the "L"-shaped connecting plate, and one end of the connecting plate is welded and fixed to the rear side of the lower end of the connecting rod, and the other end of the connecting plate is welded and fixed to the rear side of the lower side of the support frame, the fixing firmness of the lower end of the connecting rod and the support frame can be further improved, thereby further improving the structural strength of the support frame.

[0007] In a possible embodiment, the side edges of both ends of the connecting plate are bent forward to form folded edges, one of which is welded and fixed to one side of the lower end of the connecting rod, and the other is welded and fixed to the upper edge of the lower side of the support frame; by adopting this structure, under the action of the two folded edges, the fixing firmness of the connecting plate, the connecting rod and the support frame can be further improved, that is, the fixing firmness of the lower end of the connecting rod and the support frame can be further improved, thereby further improving the structural strength of the support frame.

[0008] In a possible embodiment, the backrest frame also includes a lock bracket for installing a lock body, and the lock bracket is welded and fixed to the front side of the upper end of the support frame; the rear sides of the left and right ends of the lock bracket are integrally formed with support arms, and the rear end of each support arm is provided with a bend folded inward, and the lock bracket and each support arm and the bend form an embedding groove with an opening at the lower end, the embedding groove is embedded with the upper end of the support frame, and the support arm and the bend are welded and fixed to the upper end of the support frame; after adopting this structure, before the lock bracket is welded and fixed to the support frame, under the action of the embedding groove and the support frame, the lock bracket and the support frame can be pre-positioned, thereby facilitating the welding and fixing of the lock bracket and the support frame; in addition, since the support arm and the bend are welded and fixed to the upper end of the support frame, the fixing firmness of the lock bracket and the support frame can be further improved; the lock body located inside the lock bracket is used to lock with a lock tongue fixed to the automobile frame to lock the backrest frame to the automobile frame.

[0009] In a possible embodiment, a rolled edge with a "U"-shaped cross-section is provided at the edge of the back panel, and the opening of the rolled edge is facing the rear side of the backrest frame; by providing a rolled edge with a "U"-shaped cross-section at the edge of the back panel, the structural strength at the edge of the back panel can be further improved to improve the deformation resistance at the edge of the back panel; a number of reinforcing ribs are extruded and formed at intervals on each rolled edge; by extruding a number of reinforcing ribs are extruded and formed at intervals on each rolled edge, the structural strength and deformation resistance of the rolled edge can be further improved, thereby further improving the deformation resistance at the edge of the back panel.

[0010] In a possible embodiment, a plurality of connecting strips spaced from left to right are welded and fixed to the lower end of the support frame, and the lower edge of each connecting strip is welded and fixed to the front side of the lower end of the back plate; by adopting this structure, with the action of a plurality of connecting strips, the fixing firmness and reliability of the lower end of the back plate and the lower end of the support frame can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a first three-dimensional structural schematic diagram of the utility model;

[0012] Figure 2for Figure 1 The schematic diagram of the structure after the enlargement of A in the middle;

[0013] Figure 3 This is a second three-dimensional structural schematic diagram of the utility model;

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the utility model after removing the back plate;

[0015] Figure 5 for Figure 4 The schematic diagram of the structure after enlargement at B in the middle;

[0016] Figure 6 for Figure 4 Schematic diagram of the enlarged structure at point C in the middle. DETAILED DESCRIPTION

[0017] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0018] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0019] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] See also Figure 1-6As shown, an embodiment of the present application discloses a backrest frame for a car seat, comprising a back plate 1 and a ring-shaped support frame 2, wherein the back plate 1 is welded and fixed to the rear side of the support frame 2, and the left and right sides of the lower end of the support frame 2 are respectively welded and fixed to a rotating frame 31 on one of the angle adjusters 3; the backrest frame also includes a vertically arranged connecting rod 4, the connecting rod 4 is located on the inner side of the support frame 2, the upper end of the connecting rod 4 is provided with a first stepped notch 41, and the lower end of the connecting rod 4 is provided with a second stepped notch 42, the first notch 41 is embedded and welded to the upper side of the support frame 2, the second notch 42 is embedded and welded to the lower side of the support frame 2, and the back plate 1 is also welded and fixed to the rear side wall of the connecting rod 4.

[0022] The backrest frame also includes an "L"-shaped connecting plate 5, one end of which is welded and fixed to the rear side of the lower end of the connecting rod 4, and the other end of the connecting plate 5 is welded and fixed to the rear side of the lower side of the support frame 2; by setting the "L"-shaped connecting plate, and one end of the connecting plate is welded and fixed to the rear side of the lower end of the connecting rod, and the other end of the connecting plate is welded and fixed to the rear side of the lower side of the support frame, the fixing firmness of the lower end of the connecting rod and the support frame can be further improved, thereby further improving the structural strength of the support frame.

[0023] The sides of both ends of the connecting plate 5 are bent forward to form folded edges 51, one of the folded edges 51 is welded and fixed to one side of the lower end of the connecting rod 4, and the other folded edge 51 is welded and fixed to the upper edge of the lower side of the support frame 2; by adopting this structure, under the action of the two folded edges, the fixing firmness of the connecting plate, the connecting rod and the support frame can be further improved, that is, the fixing firmness of the lower end of the connecting rod and the support frame can be further improved, thereby further improving the structural strength of the support frame.

[0024] The backrest frame also includes a lock bracket 6 for installing a lock body, and the lock bracket 6 is welded and fixed to the front side of the upper end of the support frame 2; the rear sides of the left and right ends of the lock bracket 6 are integrally formed with support arms 61, and the rear end of each support arm 61 is provided with a bend 62 folded inwardly, and the lock bracket 6 and each support arm 61 and the bend 62 surround a groove 63 with an opening at the lower end, and the groove 63 is engaged with the upper end of the support frame 2, and the support arm 61 and the bend 62 are welded and fixed to the upper end of the support frame 2; by adopting this structure, before the lock bracket is welded and fixed to the support frame, under the action of the engagement of the groove and the support frame, the lock bracket and the support frame can be pre-positioned, so that the welding and fixing of the lock bracket and the support frame can be facilitated; in addition, since the support arm and the bend are welded and fixed to the upper end of the support frame, the fixing firmness of the lock bracket and the support frame can be further improved; the lock body located inside the lock bracket is used to lock with a lock tongue fixed to the automobile frame to lock the backrest frame to the automobile frame.

[0025] A rolled edge 11 with a "U"-shaped cross section is provided at the edge of the back panel 1, and the opening of the rolled edge 11 faces the rear side of the backrest frame; by providing a rolled edge with a "U"-shaped cross section at the edge of the back panel, the structural strength at the edge of the back panel can be further improved, so as to improve the deformation resistance at the edge of the back panel; a plurality of reinforcing ribs 12 distributed at intervals are extruded and formed on each rolled edge 11; by extruding a plurality of reinforcing ribs distributed at intervals on each rolled edge, the structural strength and deformation resistance of the rolled edge can be further improved, thereby further improving the deformation resistance at the edge of the back panel.

[0026] A plurality of connecting strips 7 spaced from left to right are welded and fixed to the lower end of the support frame 2, and the lower edge of each connecting strip 7 is welded and fixed to the front side of the lower end of the back panel 1. By adopting this structure, with the action of a plurality of connecting strips, the fixing firmness and reliability of the lower end of the back panel and the lower end of the support frame can be further improved.

[0027] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A backrest frame for a car seat, comprising a back plate (1) and a ring-shaped support frame (2), wherein the back plate (1) is welded and fixed to the rear side of the support frame (2), and the left and right sides of the lower end of the support frame (2) are respectively welded and fixed to a rotating frame (31) on one of the angle adjusters (3); characterized in that: The backrest frame also includes a vertically arranged connecting rod (4), the connecting rod (4) is located on the inner side of the support frame (2), the upper end of the connecting rod (4) is provided with a first step-shaped notch (41), the lower end of the connecting rod (4) is provided with a second step-shaped notch (42), the first notch (41) is embedded in and welded to the upper side of the support frame (2), the second notch (42) is embedded in and welded to the lower side of the support frame (2), and the back plate (1) is also welded to the rear side wall of the connecting rod (4).

2. The backrest frame for a car seat according to claim 1, characterized in that: The backrest frame also includes an "L"-shaped connecting plate (5), one end of which is welded and fixed to the rear side of the lower end of the connecting rod (4), and the other end of which is welded and fixed to the rear side of the lower side of the supporting frame (2).

3. The backrest frame for a car seat according to claim 2, characterized in that: The side edges of both ends of the connecting plate (5) are bent forward to form folded edges (51), one of the folded edges (51) is welded and fixed to one side of the lower end of the connecting rod (4), and the other folded edge (51) is welded and fixed to the upper edge of the lower side of the supporting frame (2).

4. The backrest frame for a car seat according to any one of claims 1 to 3, characterized in that: The backrest frame also includes a lock bracket (6) for mounting the lock body, the lock bracket (6) being welded and fixed to the front side of the upper end of the support frame (2); the rear sides of the left and right ends of the lock bracket (6) are integrally formed with support arms (61), the rear end of each support arm (61) is provided with a bend (62) folded inwardly, the lock bracket (6) and each support arm (61) and the bend (62) form an embedding groove (63) with an opening at the lower end, the embedding groove (63) is embedded with the upper end of the support frame (2), and the support arm (61) and the bend (62) are both welded and fixed to the upper end of the support frame (2).

5. The backrest frame for a car seat according to any one of claims 1 to 3, characterized in that: A rolled edge (11) with a U-shaped cross section is provided at the edge of the backboard (1), and the opening of the rolled edge (11) faces the rear side of the backrest frame; and a plurality of reinforcing ribs (12) distributed at intervals are extruded and formed on each of the rolled edges (11).

6. The backrest frame for a car seat according to any one of claims 1 to 3, characterized in that: A plurality of connection strips (7) spaced from left to right are welded and fixed to the lower end of the support frame (2), and the lower edge of each connection strip (7) is welded and fixed to the front side of the lower end of the back plate (1).

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