Welding and positioning tool for lower fixing frame of air bag box

Abstract

A welding and positioning tool for a lower fixing frame of an air bag box comprises a bottom plate, an upper screw rod is installed at the center of the upper end face of the bottom plate through threads, a pressing disc is fixedly installed on the upper screw rod, and air bag box positioning pins corresponding to positioning holes in the air bag box one to one are fixedly installed on the upper end face of the bottom plate and located on the periphery of the upper screw rod. A lower fixing frame positioning seat is fixedly installed at the rear end of the lower end face of the bottom plate, the lower end of the lower fixing frame positioning seat inclines forwards, and lower screws corresponding to threaded holes in the lower fixing frame are rotationally installed on the left side and the right side of the lower end of the lower fixing frame positioning seat respectively. Positioning is accurate, the welding position precision of the fixing frame can be improved, and it is guaranteed that the airbag box is smoothly installed on an automobile body.

Description

Technical Field

[0001] This utility model relates to the field of automotive airbag technology, and in particular to a welding and positioning fixture for the lower fixing bracket of an airbag box. Background Technology

[0002] The car airbag system is a passive safety protection system. When a car collides, the airbag quickly deploys to form an air cushion filled with gas. As the occupants move due to inertia, they "land on the air cushion," thereby mitigating the impact on the occupants and absorbing collision energy, reducing the severity of injury.

[0003] The airbag located on the passenger side is stored in an airbag box, which is then fixed to the vehicle body by a bracket welded onto it. During the welding process of the airbag box and the bracket, the airbag box and the bracket need to be positioned to ensure that the bracket is accurately installed on the vehicle body.

[0004] Traditional positioning methods involve manually marking lines to determine the welding positions of the mounting bracket, then aligning the airbag box and the mounting bracket at the marked lines before welding. This positioning method is inaccurate, resulting in large errors in the welding position of the mounting bracket, which prevents the airbag box from being successfully installed onto the vehicle body. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems by providing a welding and positioning fixture for the lower fixing frame of the airbag box. Its positioning is accurate, which can improve the welding position accuracy of the fixing frame and ensure that the airbag box is successfully installed into the car body.

[0006] A welding and positioning fixture for a lower airbag box fixing frame includes a base plate, characterized in that: an upper screw is threadedly installed at the center of the upper end face of the base plate, a pressure plate is fixedly installed on the upper screw, and airbag box positioning pins corresponding to the positioning holes on the airbag box are fixedly installed around the upper screw on the upper end face of the base plate; a lower fixing frame positioning seat is fixedly installed at the rear end of the lower end face of the base plate, the lower end of the lower fixing frame positioning seat is inclined forward, and lower screws corresponding to the threaded holes on the lower fixing frame are rotatably installed on the left and right sides of the lower end of the lower fixing frame positioning seat.

[0007] Furthermore, a torsion bar is fixedly installed at the upper end of the upper screw to facilitate rotation of the upper screw.

[0008] Furthermore, a lower torsion bar is fixedly installed on the lower screw to facilitate the rotation of the lower screw.

[0009] Furthermore, the lower fixed frame positioning seat is inserted into and welded to the base plate to improve the installation accuracy of the lower fixed frame positioning seat.

[0010] Furthermore, weight-reducing holes are provided on the base plate to reduce the overall weight.

[0011] The beneficial effects of this utility model are:

[0012] A screw rod is threadedly installed at the center of the upper end face of the base plate, and a pressure plate is fixedly installed on the screw rod. Airbag box positioning pins, corresponding to the positioning holes on the airbag box, are fixedly installed around the upper end face of the base plate around the screw rod. The airbag box is placed on the upper end face of the base plate, and each airbag box positioning pin is inserted into the corresponding positioning hole on the airbag box. The screw rod is passed through the airbag box and threadedly installed at the center of the base plate. The screw rod is rotated so that the pressure plate firmly presses the airbag box against the upper end face of the base plate, thus positioning and fixing the airbag box.

[0013] Since the lower fixing bracket positioning seat is fixedly installed at the rear end of the lower end face of the base plate, the lower end of the lower fixing bracket positioning seat is tilted forward. The lower screw rods corresponding to the threaded holes on the lower fixing bracket are rotatably installed on the left and right sides of the lower end of the lower fixing bracket positioning seat. The two lower fixing brackets are placed on the left and right sides of the lower fixing bracket positioning seat. The lower screw rods are installed through the threaded holes of the corresponding lower fixing brackets. The lower screw rods are rotated to make the lower fixing brackets firmly press against the lower fixing bracket positioning seat. At the same time, the upper end face of the lower fixing brackets is in contact with the lower end face of the airbag box, thus positioning and fixing the two lower fixing brackets.

[0014] The precise positioning of the airbag box and the two lower fixing brackets improves the welding accuracy of the fixing brackets, ensuring that the airbag box is successfully installed into the vehicle body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a diagram showing the usage state of this utility model;

[0017] In the diagram: 1-base plate, 2-upper screw, 3-pressure plate, 4-upper torsion bar, 5-airbag box positioning pin, 6-lower fixing bracket positioning seat, 7-lower screw, 8-lower torsion bar, 9-weight reduction hole. Detailed Implementation

[0018] like Figure 1 As shown, a welding and positioning fixture for a lower airbag box fixing frame includes a base plate 1 with weight reduction holes 9. A screw rod 2 is threadedly installed at the center of the upper end face of the base plate 1. A pressure plate 3 is fixedly installed on the screw rod 2. An upper torsion bar 4 is fixedly installed at the upper end of the screw rod 2. Airbag box positioning pins 5, corresponding to the positioning holes on the airbag box, are fixedly installed around the upper screw rod 2 on the upper end face of the base plate 1. A lower fixing frame positioning seat 6 is inserted into and welded to the rear end of the lower end face of the base plate 1. The lower end of the lower fixing frame positioning seat 6 is tilted forward. Lower screw rods 7, corresponding to the threaded holes on the lower fixing plate, are rotatably installed on the left and right sides of the lower end of the lower fixing frame positioning seat 6. A lower torsion bar 8 is fixedly installed on the lower screw rod 7.

[0019] like Figure 2As shown, during the welding operation, firstly, the airbag box is placed on the upper surface of the base plate 1, and the positioning pins 5 of each airbag box are inserted into the corresponding positioning holes on the airbag box; then, the upper screw 2 passes through the airbag box and is installed in the center of the base plate 1 through the thread, and the upper torsion bar 4 is rotated to make the pressure plate 3 firmly press the airbag box against the upper surface of the base plate 1; then, the two lower fixing brackets are placed on the left and right sides of the lower fixing bracket positioning seat 6, and the lower screw 7 is installed in the threaded hole of the corresponding lower fixing bracket through the thread, and the lower torsion bar 8 is rotated to make the lower fixing bracket firmly press against the lower fixing bracket positioning seat 6, and at the same time, the upper end face of the lower fixing bracket is in contact with the lower end face of the airbag box; finally, the mating surfaces of each lower fixing bracket and the airbag box are welded.

[0020] The above are merely specific embodiments of this utility model and are not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A welding and positioning fixture for a lower fixing frame of an airbag box, comprising a base plate, characterized in that: A screw rod is threadedly installed at the center of the upper end face of the base plate, and a pressure plate is fixedly installed on the screw rod. Airbag box positioning pins, corresponding to the positioning holes on the airbag box, are fixedly installed around the upper screw rod on the upper end face of the base plate. A lower fixing frame positioning seat is fixedly installed at the rear end of the lower end face of the base plate. The lower end of the lower fixing frame positioning seat is tilted forward, and lower screw rods, corresponding to the threaded holes on the lower fixing frame, are rotatably installed on the left and right sides of the lower end of the lower fixing frame positioning seat.

2. The welding and positioning fixture for the lower fixing frame of the airbag box according to claim 1, characterized in that: A torsion bar is fixedly installed on the upper end of the upper screw.

3. The welding and positioning fixture for the lower fixing frame of the airbag box according to claim 1, characterized in that... The lower torsion bar is fixedly installed on the lower screw.

4. The welding and positioning fixture for the lower fixing frame of the airbag box according to claim 1, characterized in that... The lower fixed frame positioning seat is inserted into and welded to the base plate.

5. The welding and positioning fixture for the lower fixing frame of the airbag box according to claim 1, characterized in that... Weight reduction holes are provided on the base plate.

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