Large back plate mounting structure of backrest

Abstract

The utility model discloses a backrest large back plate mounting structure which comprises a backrest framework and a backrest large back plate, the plane size of the backrest large back plate is larger than that of the backrest framework, two supporting legs are downwards arranged at the bottom end of the backrest large back plate, the two supporting legs are distributed in a left-right spaced mode, and a door-shaped steel wire is arranged at the bottom end of the backrest framework. The door-shaped steel wire is fixed on the backrest framework through a top cross beam of the door-shaped steel wire, the two ends of the door-shaped steel wire correspond to the two supporting legs in a one-to-one mode and are fixedly connected with the two supporting legs, the top end of the backrest framework is upwards provided with two metal plate supporting lugs which are distributed in a left-and-right spaced mode, and clamping holes are formed in the metal plate supporting lugs. Clamping pins are arranged at the positions, corresponding to the two clamping holes, of the large back plate of the backrest respectively and clamped into the corresponding clamping holes, so that the large back plate of the backrest is fixedly connected with the top of the backrest framework. According to the utility model, the limitation of the original backrest framework size on the connecting position is broken through, so that the design of the large back plate of the backrest does not need to compromise due to the framework structure, and the back plate layout with larger size and more complicated shape can be realized.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a backrest large back panel mounting structure. Background Technology

[0002] In the design and manufacturing of car seats, the installation structure of the backrest panel is a crucial step. The backrest panel not only provides comfortable back support for passengers but also plays a vital role in the overall aesthetics and structural stability of the seat. However, for some backrest panels with larger planar dimensions (the planar dimensions of the backrest panel are larger than the planar dimensions of the backrest frame; this design allows the backrest panel to better cover the backrest frame, providing better support and comfort), connecting and fixing it to the backrest frame becomes a technical challenge. Traditional backrest panel installation structures often use screws or clips for fixing. However, when the planar dimensions of the backrest panel are larger than the planar dimensions of the backrest frame, this fixing method becomes inadequate. This is because there are no corresponding connection points on the backrest frame for the backrest panel's designed position, making effective fixing impossible. Utility Model Content

[0003] In view of the problems existing in the prior art, the present invention aims to provide a backrest large back panel installation structure to achieve a stable connection between the backrest large back panel and the backrest frame.

[0004] To achieve the above objectives, this utility model proposes a backrest large back panel installation structure, including a backrest frame and a large backrest panel. The planar dimensions of the large backrest panel are larger than those of the backrest frame. The bottom end of the large backrest panel has two downward-facing legs, spaced apart on the left and right. The bottom end of the backrest frame has a portal-shaped steel wire, which is fixed to the backrest frame via its top crossbeam. The two ends of the portal-shaped steel wire correspond one-to-one with the two legs and are fixedly connected together. The top end of the backrest frame has two sheet metal lugs, spaced apart on the left and right. The sheet metal lugs have locking holes. The large backrest panel has locking pins at the corresponding locking hole positions. The locking pins engage with the corresponding locking holes to achieve a fixed connection between the large backrest panel and the top of the backrest frame.

[0005] In the above solution: the two ends of the portal steel wire are designed with a flat structure, and the two legs are fixed to the two ends of the portal steel wire with screws. The flat end design provides a larger contact area, allowing the screws to grip the ends of the portal steel wire more firmly when tightened, thereby enhancing the stability of the fixation.

[0006] In the above solution: the top crossbeam of the portal steel wire is fixed to the backrest frame with screws, and the position on the top crossbeam for installing the screws is designed as a flat structure. The flat end design provides a larger contact area, allowing the screws to grip the portal steel wire more firmly when tightened, thereby enhancing the stability of the fixation.

[0007] In the above solution, the two sheet metal supports are connected together by a fixed steel wire, forming a more stable overall structure. This connection method effectively improves the rigidity of the corresponding parts of the backrest frame.

[0008] In the above solution, there are two welding fixing points between each sheet metal bracket and the fixing wire to ensure connection stability.

[0009] In the above solution: the two ends of the middle part of the backrest panel are also fixed to the backrest frame by an inverted snap structure, which further ensures the stability of the connection between the backrest panel and the backrest frame.

[0010] The above solution also includes a rear curtain that can be lifted back. The rear curtain is fixed to the backrest and covers the two legs, avoiding the exposure of obvious screws and other connecting parts, thus improving the overall aesthetics of the seat.

[0011] The beneficial effects of this utility model are as follows: 1. By extending the structure of the portal-shaped steel wire and sheet metal brackets, the limitations of the original backrest frame size on the connection position are broken, allowing the design of the large backrest panel to be designed without compromising the frame structure, enabling larger and more complex backrest panel layouts to meet product differentiation and personalization needs. 2. The two legs at the bottom of the large backrest panel are fixedly connected to the backrest frame by the portal-shaped steel wire, while the top is fixedly connected by the clips on the sheet metal brackets and the pins on the large backrest panel. This double-fixing method greatly enhances the connection stability between the large backrest panel and the backrest frame. 3. Installation is simple and quick, requiring no complicated tools or cumbersome steps, thus improving installation efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the backrest frame in this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of the large backrest panel in this utility model.

[0014] Figure 3 This is a schematic diagram of the installation of the backrest panel and the backrest frame.

[0015] Figure 4 This is a schematic diagram of the tail curtain structure. Detailed Implementation

[0016] like Figure 1As shown in Figure 4, a backrest large back panel installation structure mainly consists of a backrest frame 1 and a backrest large back panel 2. The planar dimensions of the backrest large back panel 2 are larger than those of the backrest frame 1. The bottom end of the backrest large back panel 2 is provided with two downward-facing legs 21, which are distributed alternately on the left and right.

[0017] A portal steel wire 3 is provided at the bottom of the backrest frame 1. The portal steel wire 3 is fixed to the backrest frame 1 through its top crossbeam 31. The two ends of the portal steel wire 3 correspond one-to-one with the two legs 21 and are fixedly connected together.

[0018] The top of the backrest frame 1 has two sheet metal lugs 4, which are distributed on the left and right sides at intervals. The sheet metal lugs 4 have locking holes 41. The backrest large back panel 2 has locking pins 22 at the corresponding positions of the two locking holes 41. The locking pins 22 are inserted into the corresponding locking holes 41 to achieve a fixed connection between the backrest large back panel 2 and the top of the backrest frame 1.

[0019] Ideally, the ends of the portal steel wire 3 should be designed as flat structures, and the two legs 21 should be fixed to the ends of the portal steel wire 3 by screws. The flat end design provides a larger contact area, allowing the screws to grip the ends of the portal steel wire 3 more firmly when tightened, thereby enhancing the stability of the fixation.

[0020] Ideally, the top crossbeam 31 of the portal steel wire 3 is fixed to the backrest frame 1 with screws, and the position on the top crossbeam 31 for installing the screws is designed with a flat structure. The flat end design provides a larger contact area, allowing the screws to grip the portal steel wire more firmly when tightened, thereby enhancing the stability of the fixation.

[0021] Ideally, the two sheet metal lugs 4 are connected together by a fixing steel wire 5 to form a more stable overall structure. This connection method effectively improves the rigidity of the corresponding parts of the backrest frame 1.

[0022] Ideally, there should be two welding points between each sheet metal lug 4 and the fixing wire 5 to ensure connection stability.

[0023] Ideally, the two ends of the middle part of the backrest panel 2 are also fixed to the backrest frame 1 by the inverted snap structure 23, so as to further ensure the stability of the connection between the backrest panel 2 and the backrest frame 1.

[0024] Ideally, it should also include a rear curtain 6 that can be lifted back. The rear curtain 6 is fixed to the backrest 2 and covers the two legs 21, avoiding the exposure of obvious screws and other connecting parts, thus improving the overall aesthetics of the seat.

Claims

1. A backrest large back panel mounting structure, comprising a backrest frame (1) and a backrest large back panel (2), wherein the planar dimension of the backrest large back panel (2) is larger than the planar dimension of the backrest frame (1), and the bottom end of the backrest large back panel (2) is provided with two downward-facing legs (21), the two legs (21) being spaced apart from each other on the left and right, characterized in that: The bottom end of the backrest frame (1) is provided with a portal steel wire (3). The portal steel wire (3) is fixed to the backrest frame (1) through its top crossbeam (31). The two ends of the portal steel wire (3) correspond one-to-one with the two legs (21) and are fixedly connected together. The top end of the backrest frame (1) is provided with two sheet metal ears (4). The two sheet metal ears (4) are distributed on the left and right sides at intervals. The sheet metal ears (4) are provided with locking holes (41). The backrest large back panel (2) is provided with locking pins (22) at the positions corresponding to the two locking holes (41). The locking pins (22) are inserted into the corresponding locking holes (41) to realize the fixed connection between the backrest large back panel (2) and the top of the backrest frame (1).

2. The backrest panel mounting structure according to claim 1, characterized in that: The two ends of the portal steel wire (3) are designed as flat structures, and the two legs (21) are fixed to the two ends of the portal steel wire (3) by screws.

3. The backrest panel mounting structure according to claim 1, characterized in that: The top crossbeam (31) of the portal steel wire (3) is fixed to the backrest frame (1) by screws, and the position on the top crossbeam (31) for installing screws is designed as a flat structure.

4. The backrest panel mounting structure according to claim 1, characterized in that: Two sheet metal supports (4) are connected together by a fixing wire (5).

5. The backrest panel mounting structure according to claim 4, characterized in that: There are two welding fixing points between a single sheet metal support lug (4) and a fixing wire (5).

6. The backrest panel mounting structure according to claim 1, characterized in that: The two ends of the middle part of the backrest large back panel (2) are also fixed to the backrest frame (1) by an inverted buckle structure (23).

7. The backrest panel mounting structure according to claim 1, characterized in that: It also includes a tail curtain (6) that can be lifted back, which is fixed to the backrest panel (2) and covers the two legs (21).

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