JPH06328924A - Towing hook device of automobile - Google Patents

Abstract

PURPOSE:To extensively heighten strength and rigidity by constituting a towing hook of a main body part of closed section structure with a hook engagement hole drilled on it and a pair of left and right lug parts extending upward from the main body part and welding and joining the left and right lug parts on a side wall of a floor side member. CONSTITUTION:A press moulded towing hook 2 is constituted of a main body part 3 the cross section of which forms a square and a pair of lug parts 4 extending upward from left and right side walls 3a constituting the main body part 3, a pair of left and right flange type parts 3c extending vertically is extensively provided opposite each other on a front wall 3b of the main body part 3, the flange type parts 3c are made contact with each other and they are welded and joined together except for their upper end parts. On the left and right side walls 3a of the main body part 3, hook engagement holes 5 are provided on positions opposite each other, and the holes 5 are made to be burring holes by extending building-up parts 5a from the margin. Thereafter, by inserting the lug parts 4 of the towing hook 2 in a rear end part of a floor side member 1 from below and sandwiching them, the lug parts are welded and joined on a side wall part 1a and the other tongue piece is welded and joined on a rear wall 3d.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a towing hook device installed in the rear part of an automobile.

[0002]

2. Description of the Related Art A towing hook a is installed at the rear of an automobile as shown in FIG. 5, and a rope R is hooked on this to pull the vehicle. As a mounting structure of the hook a, for example, one shown in FIG. 4 is known. The towing hook a is welded to the rear end of the floor side member b.

However, since the towing hook a has a structure in which the two press-formed members c and d are simply joined together, there is a problem in terms of strength, especially with respect to the lateral force.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a towing hook device for an automobile, which has significantly improved strength and rigidity.

[0004]

DISCLOSURE OF THE INVENTION The present invention for solving the above-mentioned problems is achieved by welding a towing hook press-molded to the rear end of a floor side member.
The towing hook is composed of a main body having a closed cross-section structure having a hook engaging hole formed therein, and a pair of left and right ears extending upward from the main body. The left and right ears are formed on the floor side member. It is characterized by being welded to the side wall of.

[0005]

1 shows the structure of the present invention. In the figure,
1 is a floor side member and 2 is a towing hook. The towing hook 2 is press-molded, and includes a main body 3 having a quadrangular cross section, and a pair of ears 4 extending upward from the left and right side walls 3a forming the main body 3. On the front wall 3b of the main body 3, a pair of vertically extending left and right flange-like portions 3c are provided so as to face each other. There is.

Hook engaging holes 5 are provided on the left and right side walls 3a of the main body 3 so as to face each other, and the rising portions 5a of the holes 5 extend from the periphery to form burring holes. The hook engaging hole 5 is formed in a track shape extending obliquely with respect to the perpendicular. Then, the left and right ears 4 of the towing hook 2 are inserted into the rear end of the floor side member 1 from below and sandwiched, and these ears 4 are welded to the side wall 1a of the floor side member 1 respectively. is there. Further, the tongue piece 1c extending downward from the rear end of the bottom wall 1b of the floor side member 1 is attached to the towing hook 2
It is welded to the rear wall 3d (see FIG. 3). A cutout 6 is provided at the lower end of the rear wall 3d.

This towing hook 2 has a hook engaging hole 5
Since it has a burring hole, there is no risk of damaging the rope even if the rope is directly hung on the burring hole. In addition,
The main body 3 of the towing hook 2 may have any structure and shape as long as it has a closed cross section.

[0008]

According to the present invention, since the main body of the towing hook has a closed cross-section structure, the strength and rigidity can be greatly increased in the left, right, front and rear directions.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of the present invention.

FIG. 2 is a sectional view taken along line AA shown in FIG.

FIG. 3 is a diagram of FIG. 1 viewed from a direction of an arrow B.

FIG. 4 is a perspective view showing a conventional example.

FIG. 5 is a perspective view of an automobile.

[Explanation of symbols]

 1 Floor side member 1a Side wall 1b Bottom wall 1c Tongue piece 2 Towing hook 3 Main body part 3a Side wall 3b Front wall 3c Flange-like part 3d Rear wall 4 Ear part 5 Hook engaging hole 5a Rising part

Claims (3)

[Claims] 1. When a towing hook press-molded at the rear end of a floor side member is welded together, the towing hook has a main body having a closed cross-sectional structure having a hook engaging hole, and the main body. And a pair of left and right ears extending upward from the left and right ears, and the left and right ears are welded to the side wall of the floor side member. 2. The towing hook device for an automobile according to claim 1, wherein the main body portion is formed by welding the flange portions at both ends extending in the vertical direction to each other by welding to form a quadrangular cross section. 3. The towing hook device for an automobile according to claim 1, wherein the hook engaging hole is a burring hole.