JPH0420701Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to an automobile chassis frame that is designed to improve the strength and durability of the end portions and the appearance.

``Prior Art'' Automobile chassis frames are often manufactured by using two square pipes placed at appropriate intervals as side members, and connecting these two side members with multiple cross members. . Since the ends of the side members of the chassis frame are left open, mud and water may enter through these openings and cause rust.

To explain this with reference to FIG. 5, this chassis frame 1 is made up of two side members 2, each of which has an intermediate section 3, a front section 4, and a rear section 5 which are manufactured separately and joined together. The front end 6 and rear end 7 of the section 3 are open. 8 is a cross member.

``Problems that the invention seeks to solve'' In the chassis frame 1 having the structure described above, the front and rear ends 6 and 7 of the intermediate portion 3 are open, so mud and water may enter there and cause rust. Cheap. Further, a very large stress will be concentrated at the corner 9 (see FIG. 1). This is because the front and rear ends 6 and 7 deform into a parallelogram shape when the chassis frame 1 is twisted.

The purpose of this invention is to solve the above-mentioned problem by attaching lids having a preferable shape to the front and rear ends 6, 7 of the open intermediate section 3.

``Means for solving the problem'' This idea uses a square pipe with an open end for an automobile chassis frame, with a bent part that enters the inside of the four sides from the end of the square pipe, and a The lid is provided with a claw that is located at a corner between the bent parts and protrudes outward from the corner of the end of the square pipe, and the lid is attached so that the bent part is placed within the four sides from the end of the square pipe. This is an automobile chassis frame in which a false nail is attached to a square pipe so as to protrude outside the corner, and the bent part and the square pipe are welded.

``Operation'' With this configuration, the front and rear ends, which were previously open, will be closed by the lid body, so firstly, the strength will be improved and it will not deform, and since it is not open, mud and water will Therefore, there is no need to worry about rusting.

``Embodiment'' Next, an embodiment of this invention will be described with reference to FIG. 1. Reference numeral 10 is a lid body, and bent portions 11 enter inside the four sides from the front end 6 of the intermediate portion 3, which is a square pipe. and a claw 12 located between the bent portion 11 and protruding to the outside of the corner portion 9 of the intermediate portion 3. This lid body 10 has a front end portion 6 of the intermediate portion 3.
(The same applies to the rear end 7), insert the bent part 11 inside the four sides, attach it so that the claw 12 protrudes outside the corner part 9, and as shown in FIG.
1 and the front end portion 6 (rear end portion 7) are fixed by welding 13 (see FIGS. 3 and 4). In this way, the lid body 10
When attaching to the end of the intermediate portion 3, the claws 12 come into contact with the corner portions 9 and perform a positioning action. By performing the welding 13, the end face of the lid body 10 is hidden, so
Good appearance.

"Effect of the invention" As explained above, this invention
and a claw 12.
0 from the front end 6 (or rear end 7) of the middle part 3, which is a square pipe, and insert the bent part 11 into the four sides of the middle part 3, so that the claws 12 protrude to the outside of the corner part 9. Since the bent portion 11 is fixed to the intermediate portion 3 by welding 13, the appearance is improved and the strength of the intermediate portion 3 is improved.
Further, since the cover body 10 prevents mud and water from entering the interior of the intermediate portion 3, rust can be prevented.
Furthermore, since the structure is simple, it is easy to assemble and can be done at low cost.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of this invention in an exploded state, Fig. 2 is a perspective view showing the assembled state of the device in Fig. 1, and Fig. 3 is a section taken along the - line in Fig. 2. 4 is a sectional view of a portion taken along line - in FIG. 2, and FIG. 5 is a perspective view of a chassis frame to which this invention is applied. 1... Chassis frame, 6... Front end, 7...
...Rear end, 9... Corner, 10... Lid, 11...
Bending part, 12...Claw, 13...Welding.

Claims (1)

[Scope of utility model registration request] In an automobile chassis frame that uses a square pipe and has an open end, there is a bent part that enters the inside of the four sides from the end of the square pipe, and a corner between the bent parts. A lid body having a claw protruding to the outside of the corner of the pipe end, the lid body being inserted into the four sides from the end of the square pipe so that the claw protrudes to the outside of the corner. An automobile chassis frame characterized in that the frame is bent and attached to a square pipe, and the bent part and the square pipe are welded.