JPH10278524A - Car towing hook mounting structure - Google Patents

Abstract

(57) [Summary] [Problem] Towing hook can be made to have a structure that is difficult to peel off and appearance can be improved, and positioning of towing hook relative to towing hook bracket can be performed easily. Provided is a towing hook mounting structure for a motor vehicle having a structure capable of improving the strength of a bracket and thus the strength of a towing hook mounting portion. SOLUTION: A long hole 16 for inserting a towing hook is formed in a bracket 11, and a towing hook 3 is inserted into the long hole 16 from an inner surface facing an automobile body (for example, a rear floor panel 1) to be inserted and positioned. 3, both ends (mounting ends 3b, 3c) are brought into contact with the inner surfaces (recesses 17, 18) of the bracket 11,
Under this condition, both ends of the towing hook 3 are welded together (for example, arc welding β) into the bracket 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a towing hook mounting structure for an automobile.

[0002]

2. Description of the Related Art FIG. 5 shows a vehicle body structure of a four-wheeled vehicle in which a rear portion of the vehicle body is viewed from below, and shows a conventional towing hook mounting structure in a four-wheeled vehicle. In the figure, reference numeral 1 denotes a rear floor panel constituting a rear portion of a vehicle body of a four-wheeled vehicle, reference numeral 2 denotes a towing hook bracket attached to the lower surface of the rear floor panel 1, and reference numeral 3 denotes a towing hook attached to the bracket by welding. The above-mentioned towing hook 3 has a hook portion 3a formed by bending a steel round bar material into a substantially V-shape, and a mounting end portion 3 formed by bent pieces extending at both ends of the hook portion 3a.
b, 3c. The towing hook bracket 2 is a member having a box-shaped main body 2a and a flange 2b bent around the periphery of the main body 2a. Then, as shown in FIGS. 5 and 6, the main body 2a of the towing hook bracket 2 is formed.
Is provided with a concave portion 4 having a substantially semicircular cross section depressed toward the upper side on the lower surface of the bottom wall, and a concave portion 5 depressed toward the inside of the main body 2a on the outer surface of the side wall. ing.

In mounting the towing hook 3, first, the towing hook 3 is moved from the lower side of the towing hook bracket 2 toward the towing hook bracket 2 (see FIG. 6A), whereby the towing hook bracket 2 is mounted. The mounting ends 3b and 3c of the towing hook 3 are inserted into the recesses 4 and 5 of the main body 2a, respectively, so as to be brought into contact with the lower surfaces of the recesses 4 and 5. Thereafter, as shown in FIG.
The toe hook 3 is attached to the main body 2a of the toe hook bracket 2 by attaching the toe hook 3 to the toe hook 3 so that the toe hook 3 and the toe hook 3 are assembled in advance. Next, the towing hook bracket 2 to which the towing hook 3 is connected
Is fixed to the lower surface of the rear floor panel 1 by spot welding or the like, whereby the hook portion 3a of the substantially V-shaped towing hook 3 is attached to the main body portion 2a.
Of the towing hook 3 via the towing hook bracket 2 in a state of being protruded downward from the bottom surface of the towing hook 3.
Is mounted on the rear floor panel 1.

[0004]

However, in the conventional towing hook mounting structure as described above, since the towing hook 3 is arc-welded to the bottom outer surface of the towing hook bracket 2, this arc welding is insufficient. In this case, the towing hook 3 may be separated from the bracket 2. In addition, since the welded portion is exposed to the outside, there is a problem that the appearance is impaired.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a structure in which a towing hook is hardly peeled off and a good external appearance. It is an object of the present invention to provide a towing hook mounting structure for a vehicle having such a structure that the towing hook can be easily positioned with respect to the hook bracket and the strength of the towing hook bracket can be improved, and thus the strength of the towing hook mounting portion can be improved. is there.

[0006]

In order to achieve the above object, according to the present invention, a towing hook is welded to a bracket attached to an automobile body, and the towing hook is attached to the automobile body via the bracket. In the towing hook mounting structure for an automobile as described above, a slot for inserting a towing hook is formed in the bracket, and the towing hook is inserted into the slot from the inner surface of the bracket facing the vehicle body. At the same time, both ends of the towing hook are brought into contact with the inner surface of the bracket, and under this condition, both ends of the towing hook are welded to the inner surface of the bracket.

Further, in the present invention, a concave bead portion is formed in a bracket portion including the elongated hole for inserting the towing hook and the connecting portion of the towing hook, and the elongated hole is a burring hole.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In FIGS. 1 to 4, the same parts as those in FIGS. 5 and 6 are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 shows a four-wheeled vehicle 10 provided with a towing hook mounting structure according to the present invention. The towing hook 3 is disposed at a lower portion of a rear portion 10a of the four-wheeled vehicle 10 in a vehicle body. I have. The towing hook 3 has a hook portion 3a and mounting end portions 3b and 3c by bending a single steel round bar similarly to a conventionally used member. .

In this embodiment, the towing hook 3 is attached to the rear floor panel 1 (see FIG. 3) of the four-wheeled vehicle 10 via a towing hook bracket 11 as shown in FIGS. ing. Here, the towing hook bracket 11 will be described. As shown in FIGS. 2 and 3, the bracket 11 has a box-shaped main body 11a and a flange 11b bent around the periphery of the main body 11a. ing. On the horizontal bottom wall 12 and the inclined rear wall 13 of the main body 11a, a series of protruding portions 14 protruding downward and extending longitudinally substantially along the front-rear direction are press-formed. At the same time, a concave bead portion 15 which is recessed downward on the inner surface side of the bracket 11 disposed opposite to the rear floor panel 1 is accordingly provided on the inner surface side of the protruding portion 14.
Are formed. Further, an elongated hole 16 for inserting a towing hook extending in the front-rear direction is opened at an intermediate portion of the protrusion 14 in the front-rear direction.

The inner surface of the concave bead portion 15 at the front and rear ends of the long hole 16 for inserting the towing hook, that is, the portion to which the mounting ends 3b and 3c of the towing hook 3 are applied, is recessed downward. Towing hook mounting recesses 17 and 18 are provided which have an elliptical shape and a shape substantially matching the mounting ends 3b and 3c of the towing hook 3. Further, the towing hook insertion slot 16
Is formed as a burring hole 20 having a peripheral wall 19 at a portion of the protruding portion 14 or the concave bead portion 15. Thus, a concave bead portion 15 is formed in the bracket portion including the toe hook insertion slot 16 and the connecting portion of the towing hook 3 (the recesses 17 and 18 for attaching the toe hook), and the slot 16 is formed with the burring hole 20. It has been done. It is preferable that the burring height of the burring hole 20, that is, the height of the peripheral wall 19 be as high as possible.

Next, the procedure for mounting the towing hook 3 will be described as follows. First, as shown in FIG. 4, with the main body 11a of the towing hook bracket 11 facing downward and the flange 11b thereof facing upward, the towing hook 3 is moved to the upper side of the towing hook bracket 11 (the rear floor panel 1). From the inner surface of the bracket 11 facing the inner surface of the towing hook bracket 11, and the hook portion 3 a of the towing hook 3 is inserted into the towing hook bracket 1.
It is inserted into one long hole 16 so as to protrude downward from the towing hook bracket 11 as shown by a dashed line in FIG. Then, the mounting ends 3b and 3c of the towing hook 3 are fitted into the recesses 17 and 18 of the towing hook bracket 11, and under this mounted state, the mounting is performed by arc welding β (or spot welding or the like) as shown in FIG. At the ends 3b and 3c, the towing hook bracket 1
The inner surface of the main body 11a is welded to the inner surface. Thus, the attachment ends 3b and 3c are integrally attached to the towing hook bracket 11 in a state where the attachment ends 3b and 3c are gripped between the main body 11a and the arc weld β.

Thereafter, as described above, the towing hook bracket 1 with the towing hook 3 integrally attached thereto.
1 is attached to the lower surface of the rear part of the rear floor panel 1 by spot welding. Thereby, the towing hook 3 is attached to the rear floor panel 1 via the towing hook bracket 11 (see FIG. 3).

According to the towing hook mounting structure as described above, the towing hook 3 is fitted from the inner surface side of the towing hook bracket 11 and welded, so that peeling of the towing hook 3 at the arc welding β portion is prevented. This has the advantage that it is less likely to occur and therefore the amount of welding is reduced. Further, since the elongated hole 16, the concave bead portion 15, and the concave portions 17, 18 for mounting the towing hooks are provided in the towing hook bracket 11, the positioning of the towing hook 3 with respect to the towing hook bracket 11 can be performed easily and reliably. . Further, since the elongated hole 16 is a burring hole 20, the rigidity in the lateral direction of the vehicle body can be improved.

As described above, one embodiment of the present invention has been described.
The present invention is not limited to this embodiment, and various modifications and changes can be made based on the technical idea of the present invention. For example, if the mounting ends 3b and 3c are arranged inside the towing hook bracket 11 on the towing hook 3 so that the towing hook 3 does not come out of the towing hook bracket 11, the entire towing hook bracket 11 is formed. The shape, the bending angle of the towing hook 3, and the like can be appropriately changed as necessary.

[0016]

As described above, according to the present invention, a long hole for inserting a towing hook is formed in a bracket, and the towing hook is inserted into the long hole from the inner surface side of the bracket facing the automobile body, and the towing hole is inserted. Since both ends of the hook are in contact with the inner surface of the bracket, and both ends of the towing hook are welded to the inside of the bracket under this state, both ends of the towing hook are attached to the bracket. It will be attached to the bracket while being held between the inner surface and the weld,
Therefore, it is possible to provide a structure in which the towing hook does not come out of the bracket, and a structure in which both ends of the towing hook welded to the towing hook are difficult to peel off from the bracket. Therefore, with the above configuration, it is possible to reduce the amount of welding when welding both ends of the towing hook to the bracket. Further, since the welding is performed from the inside of the bracket, the welded portion is not exposed to the outside, so that the appearance can be improved, and the generation of rust at the welded portion can be suppressed, so that the durability can be improved. be able to.

Further, according to the present invention, a concave bead portion is formed in a bracket portion including a long hole for inserting a towing hook and a connecting portion of the towing hook, and the long hole is formed as a burring hole. The presence of the hole and the concave bead portion makes it possible to easily and surely position the towing hook with respect to the bracket, and improves the rigidity of the toe hook in the lateral direction of the vehicle at the mounting point of the towing hook due to the burring hole. Can be done.

[Brief description of the drawings]

FIG. 1 is a perspective view of a four-wheeled vehicle provided with a towing hook mounting structure according to the present invention.

FIG. 2 is a view seen from an arrow X direction in FIG. 1,
It is a perspective view which shows the attachment state of the towing hook to a towing hook bracket.

FIG. 3 is a sectional view taken along line YY in FIG. 2;

FIG. 4 is a cross-sectional view for explaining a procedure for attaching a towing hook.

FIG. 5 is a perspective view showing a conventional towing hook mounting structure, showing a towing hook mounted on the lower surface of a rear floor panel of a four-wheeled vehicle.

6A and 6B are views for explaining a conventional procedure for mounting a towing hook, in which FIG. 6A is a cross-sectional view showing an operation for connecting the towing hook to the towing hook bracket, and FIG. FIG. 5 is a cross-sectional view showing a state where the towing hook bracket attached to the rear panel is attached to a rear floor panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rear floor panel 3 Towing hook 10 Four-wheeled vehicle 11 Towing hook bracket 12 Bottom wall 13 Rear wall 14 Projection part 15 Concave bead part 16 Towing hook insertion long hole 17, 18 Towing hook mounting recess 19 Peripheral wall 20 Burring hole β arc welding

Claims (2)

[Claims] 1. A towing hook mounting structure for an automobile, wherein a towing hook is welded to a bracket attached to an automobile body, and the towing hook is attached to the automobile body via the bracket.
A long hole for inserting a towing hook is formed in the bracket, and the towing hook is inserted into the long hole from the inner surface side of the bracket facing the vehicle body to be inserted and the both ends of the towing hook are formed. A towing hook mounting structure for a motor vehicle, wherein both ends of the towing hook are welded to the inner surface of the bracket under this condition. 2. The method according to claim 1, wherein a concave bead portion is formed in a bracket portion including the elongated hole for inserting the towing hook and a connecting portion of the towing hook, and the elongated hole is a burring hole. Car towing hook mounting structure.