JP2006088742A - Mounting structure of towing hook - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a detachable towing hook installed at a mounting part of a pipe-like bumper beam. <P>SOLUTION: A bumper beam assembly 1 extends in a vehicle width direction, and comprises pipes 2, 3 arranged in a upward and downward direction, a beam mounting member 8 mounting the pipes 2, 3 to a side frame, and a top bracket 11. A front bracket 9 is installed on a front side on outer peripheries of the pipes 2, 3, and supporting pipes 14 are mounted to the beam mounting member 8 and the front bracket 9. While a female screw 14a is formed at an inner periphery of the supporting pipe 14, a male screw 7a is formed on the towing hook 7, so as to screw the towing hook 7 with the supporting pipe 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure for attaching a tow hook on which a rope is hooked when towing such as when a vehicle is broken.

  A tow hook is provided on the vehicle body for towing the vehicle in the event of a failure. Since a bumper is disposed at the front of the automobile, the tow hook needs to avoid interference with the lower edge of the bumper. Therefore, there are some in which the tow hook protrudes downward from the lower surface of the side member or the like of the vehicle body. In this way, when the tow hook is protruded downward from the side member, there is a possibility that the tow hook comes into contact with a significant step or an obstacle on the road surface.

For this reason, there is a type in which a tow hook is attached to the front end side of the side member and a bumper beam assembly is passed through. In addition, such a traction hook includes a hook that is fixed to the vehicle body by welding, and a detachable type that is attached to the vehicle body only during towing without being attached to the vehicle body in normal times (when not in use).
Some of the latter detachable traction hooks are provided with a hook at one end, a male screw at the other end, and attached to the vehicle body by screwing the traction hook onto a screw portion provided on the vehicle body side.
JP 2002-53066 A

On the other hand, in order to give versatility to the bumper beam assembly, the applicant has proposed a bumper beam assembly using a pipe material for the beam body (Japanese Patent Application No. 2003-396437).
It is an object of the present invention to provide a structure for attaching a tow hook using a pipe material for such a beam body and attaching a detachable tow hook to a bumper beam assembly.

In order to achieve the above object, the present invention provides a bumper beam assembly having a beam main body extending in the vehicle width direction and a beam mounting member for mounting the beam main body on a side frame. In the mounting structure of the tow hook that is connected to the tow hook through the tow hole formed in the bumper cover that covers the vehicle, the beam body is formed of pipe materials arranged in the vertical direction, and these The beam attachment member was provided on the rear side of the outer peripheral surface of the pipe member, a front bracket was provided on the front side of the outer peripheral surface, and the traction hook was attached to the beam attachment member and the front bracket.
In the above invention, a support pipe is attached to the front bracket and the beam attachment member, a female screw is formed on an inner peripheral portion of the support pipe, a male screw is formed on the pulling hook, and the pulling hook is connected to the support pipe. Can be screwed together.
Moreover, the said invention can attach the said support pipe by making the said beam attachment member and the said front bracket penetrate.

The present invention provides a tow hook provided on a bumper beam assembly provided with a beam body extending in the vehicle width direction and a beam mounting member for mounting the beam body to a side frame, and formed on a bumper cover covering the bumper beam assembly. In a tow hook mounting structure in which the vehicle is towed by being connected to the tow hook through the hole of the tube, the beam body is formed of pipe materials arranged in the vertical direction, and the rear side of the outer peripheral surface of these pipe materials And the front bracket on the front side of the outer peripheral surface, and the traction hook is mounted on the beam mounting member and the front bracket, thereby improving the rigidity of the mounting portion of the support pipe. At the same time, the strength of the bumper beam assembly is improved.
In the above invention, a support pipe is attached to the front bracket and the beam attachment member, a female screw is formed on an inner peripheral portion of the support pipe, a male screw is formed on the pulling hook, and the pulling hook is connected to the support pipe. Since the bumper beam assembly has a high mounting strength, the mounting portion of the support pipe can be disposed.
In the above invention, since the support pipe is attached by penetrating the beam attachment member and the front bracket, the strength of the welded portion can be increased by welding the penetration portion of the support pipe and the front and rear brackets. .

Hereinafter, a structure for attaching a tow hook according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a bumper beam assembly disposed inside a bumper cover of an automobile, FIG. 2 is a perspective view of a bumper beam assembly and a frame mounting portion, and FIG. 3 is an exploded view of FIG. FIG. 4 is a perspective view showing an engagement relationship between the bumper beam assembly and the attachment portion of the traction hook, and FIG. 5 is a cross-sectional view taken along line AA of FIG. 4 in a state where the traction hook is attached to the bumper beam assembly. FIG. 6 is a sectional view in the direction of line BB in FIG.

As shown in FIG. 1, the bumper beam assembly 1 on the front side of the vehicle is made of the same material, and the two upper and lower pipes 2 and 3 having the same thickness and the left and right sides fixing the pipes 2 and 3 in the vehicle width direction are fixed. Beam mounting parts 4 and 5 and a front bracket 6 provided on the front side of the center part of the pipes 2 and 3 in the vehicle width direction.
The pipes 2 and 3 used in the bumper beam assembly 1 are arc-shaped (see FIG. 3) with a central portion protruding slightly forward, and are disposed at intervals on the upper and lower sides. It is formed in a length that slightly protrudes in the vehicle width direction from the frame 10. In the present embodiment, the lengths of the pipes 2 and 3 are arranged so as to coincide with each other, and the pipes 2 and 3 are arranged in parallel so as to overlap each other when viewed from above the vehicle body (in plan view). Yes.

As shown in FIGS. 2 and 3, the beam mounting portion 5 on the right side of the vehicle body includes a beam mounting bracket 8 and an upper bracket 11, and the beam mounting bracket 8 is fixed to the rear side of the pipes 2 and 3 by welding. Then, the front portion of the upper bracket 11 and the back surface of the beam mounting bracket 8 are fixed by welding.
The beam mounting bracket 8 is formed with arc portions 8d corresponding to the outer circumferences of the pipes 2 and 3 on the upper and lower sides of the left and right flange portions 8a and 8b bent to the front side. The outer peripheral part of is fixed by welding. Further, at the lower part of the beam mounting bracket 8, two oval through holes 8e that are long in the lateral direction are provided. The through hole 8 e is formed so as to correspond to the position of the screw hole 10 c formed in the lower part of the side frame 10.

As shown in FIG. 4 or 5, the front bracket 9 is disposed on the front peripheral surface side of the pipes 2 and 3. The front bracket 9 is provided with left and right side walls 9a and 9b, and these side walls 9a and 9b are fixed to the outer peripheral surfaces of the upper and lower pipes 2 and 3 by welding. Outer flanges 9d and 9e are formed at the ends of the left and right side walls 9a and 9b, and the outer flanges 9d and 9e are fixed to the front end of the beam mounting bracket 8 by welding.
As shown in FIG. 6, a locking portion 11a is formed at the rear end of the upper bracket 11 by bending the rear end portion of the upper bracket 11 downward, and a through hole 11b is formed on the front side of the locking portion 11a. is doing. On the other hand, a screw hole 10d is provided on the upper surface of the side frame 10, and a locking hole 10e is formed on the rear side of the screw hole 10d.

As shown in FIG. 3, holes 8c and 9c are formed in the beam mounting bracket 8 and the front bracket 9 at positions corresponding to the longitudinal direction of the vehicle, and the support pipe 14 is passed through the holes 8c and 9c. Provided. An internal thread 14 a is formed on the inner peripheral surface of the support pipe 14. The front end side of the outer peripheral surface of the support pipe 14 is fixed to the through portion of the hole 9c of the front bracket 9 by welding, and the rear end side is fixed to the through portion of the hole 8c of the beam mounting bracket 8 by welding. Since the support pipe 14 is welded to the joint portion of the projecting portion at the front and rear ends, the mounting strength is improved. On the rear end side of the support pipe 14, an opening 10 b portion located on the front end surface 10 a of the side frame 10 is formed.
Although only the right beam mounting portion 5 of the left and right beam mounting portions 4 and 5 has been described, the other left beam mounting portion 4 is provided with the front bracket 9, the support pipe 14 and the traction hook 7. The other configurations are not substantially different from those of the right beam mounting portion 5 and are therefore omitted.

  When the bumper beam assembly 1 is mounted on the side frame 10, the bumper beam assembly 1 is fixed to the side frame 10 with the front bracket 9 and the support pipe 14 fixed to the bumper beam assembly 1 including the beam mounting bracket 8 and the upper bracket 11. . That is, as shown in FIG. 3, the upper bracket 11 is superimposed on the upper surface of the side frame 10, and the locking portion 11a is inserted into the locking hole 10e (see FIG. 6), thereby aligning with the side frame 10. . Then, the bolt 13 is screwed into the screw hole 10 d to fasten the upper bracket 11 to the side frame 10. Similarly, at the lower part of the beam mounting bracket 8, a bolt 12 is screwed into the screw hole 10c of the front end surface 10a of the side frame 10, and the beam mounting bracket 8 is fastened to the front end surface 10a.

The towing hook 7 is provided with an annular hooking portion 7b to which a hook-like towing tool attached to a rope or the like is locked on the distal end side, and a bolt-shaped male screw portion is provided on the base end side of the towing hook 7. 7a is formed.
As shown in FIGS. 5 and 6, a resin bumper skin 15 is disposed on the front side of the bumper beam assembly 1, and the bumper skin 15 covers the front surface of the bumper beam assembly 1. A hole 17 is formed in a portion of the bumper skin 15 located in front of the support pipe 14, and a detachable cap 16 is attached to the hole 17. At the time of towing the vehicle, the cap 16 is removed, and the male screw portion 7a of the tow hook 7 is screwed onto the female screw 14a of the support pipe 14, and the tow hook 7 is attached to the vehicle body side.
When the vehicle is towed, the support pipe 14 is fixed to the beam mounting bracket 8 and the front bracket 9 which are spaced apart by welding, so that the fixing force is larger than the case where the bracket is fixed with one of the brackets 8 and 9. .
After the traction is completed, the traction hook 7 is removed and the cap 17 is put on the hole 17 of the bumper skin 15 to close the hole 17, so that the attachment portion of the traction hook 7 is not visible. Further, the hook portion 7 b of the tow hook 7 is arranged in front of the bumper skin 15. Interference between the tow rope and the bumper skin 15 can be prevented.

Although the embodiments of the present invention have been described above, the present invention is of course not limited thereto, and various modifications and changes can be made based on the technical idea of the present invention.
For example, in the above embodiment, the traction hook 7 is screwed into the support pipe 14, but the traction hook 7 is secured to the beam mounting bracket 8 or (and) the front bracket 9 by welding, and pulled to the nut. The hook 7 may be screwed.

FIG. 1 is a front view of a bumper beam assembly of a traction hook mounting structure according to an embodiment of the present invention. It is a perspective view of the attachment part of the bumper beam assembly shown in FIG. 1, and a side frame. It is a disassembled perspective view of the attachment part of the bumper beam assembly shown in FIG. 1, and a side frame. It is a perspective view which shows the engagement relationship of the bumper beam assembly shown in FIG. 1, and the attaching part of a traction hook. FIG. 5 is a cross-sectional view taken along the line AA in FIG. It is sectional drawing of the BB line direction of FIG. 4 in the state where the tow hook was attached to the bumper beam assembly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bumper beam assembly 2,3 Pipe 4,5 Beam mounting part 6 Front bracket 7 Pull hook 7a Male thread part 8 Beam mounting bracket 9 Front bracket 10 Side frame 11 Upper bracket 14 Support pipe 14a Female thread 15 Bumper skin

Claims (3)

A bumper beam assembly provided with a beam main body extending in the vehicle width direction and a beam mounting member for attaching the beam main body to the side frame is provided with a pulling hook, and through a pulling hole formed in the bumper cover covering the bumper beam assembly. In the mounting structure of the tow hook that is connected to the tow hook and the vehicle is towed,
The beam body is formed of pipe materials arranged in the vertical direction, the beam mounting member is provided on the rear side of the outer peripheral surface of these pipe materials, and the front bracket is provided on the front side of the outer peripheral surface, and the beam mounting An attachment structure for a tow hook, wherein the tow hook is attached to a member and the front bracket.   A support pipe is attached to the front bracket and the beam attachment member, a female screw is formed on the inner periphery of the support pipe, a male screw is formed on the traction hook, and the traction hook is screwed onto the support pipe. The tow hook mounting structure according to claim 1, wherein:   The attachment structure of the tow hook according to claim 1 or 2, wherein the support pipe is attached through the beam attachment member and the front bracket.

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