JP6809984B2 - Hook mounting structure - Google Patents

Description

The present invention relates to a hook mounting structure, in particular, to secure support strength when a hook is mounted and load absorption performance at the time of a collision in a vehicle, and further, realize cost reduction without restricting the vehicle body design. Regarding the hook mounting structure that can be used.

Some front or rear bumper structures of automobiles allow the attachment of hooks for lashing or towing. For example, such a hook can be attached by screwing the support rod of the hook into the mounting portion on the vehicle side, in which the tip of the support rod supporting the ring or the hook body is threaded. Become.
In the following description, regardless of whether the hook is attached to the front or the rear of the vehicle, the positional relationship in the hook attachment structure is such that the front side is the front side and the back side when viewed from the outside of the vehicle. (Inside the vehicle) is defined as the rear.

More specifically, as shown in FIG. 3, an insertion hole 50a for inserting the support rod 51a of the hook 51 is formed in the bumper informose 50 extending in the vehicle width direction. Generally, the bumper infoce 50 has a rectangular cross section and has a hollow structure for shock absorption and weight reduction. The insertion holes 50a are formed at two locations, a front wall and a rear wall of the bumper infoce 50 when viewed from the outside of the vehicle (the insertion holes 50a on the front side serve as load support portions). In the bumper infos 50, a retainer member 60 having a screw hole 60a is arranged behind the position where the insertion hole 50a is formed. Then, the tip of the support rod 51a of the hook 51 inserted into the insertion hole 50a of the bumper informose 50 is screwed into the screw hole 60a of the retainer member 60 and fixed.

FIG. 4 is a cross section of the rear structure of an automobile. As shown in the figure, in front of the bumper infos 50, the end of the rear side member 70 extending in the front-rear direction of the vehicle is connected to one side of the lower back 71, and on the other side of the lower back 71, a crash which is a hollow structure box body. The box 72 is arranged. That is, when the bumper infoce 50 receives an impact from the rear of the vehicle, the hollow bumper infoose 50 and the crash box 72 are crushed to absorb the impact.

According to such a structure, when the hook 51 is attached, the necessary support strength can be obtained, and the load absorption performance at the time of a collision can be ensured.
The invention of the structure in which the hook is detachably attached is disclosed in Patent Document 1.

Japanese Patent No. 5268702

However, when the hook mounting position is set to the height of the bumper infoce 50 as described above, the outer plate color member 81 and the plating member 82 set on the bumper cover 80 are formed as shown in the rear view of the vehicle in FIG. 5 (a). The hook mounting portion may straddle the hook cover 83, and the hook cover 83 for hiding the hook mounting port must be composed of two members as shown in the cross-sectional view of FIG. 5 (b), which increases the cost and increases the cost. There was a problem that it was not preferable in terms of design.

The present invention has been made by paying attention to the above points, secures the supporting strength when the hook is attached and the load absorbing performance at the time of a collision in the vehicle, and further, does not impose restrictions on the vehicle body design. It is an object of the present invention to provide a hook mounting structure capable of realizing cost reduction.

In order to solve the above-mentioned problems, in the hook mounting structure according to the present invention, the hook formed by the hook portion main body and the support rod supporting the hook portion main body extends in the vehicle width direction with respect to the bumpy informose. It is a hook mounting structure that can be mounted via a retainer member fixed to the front side wall portion arranged above and on the front side of the bumper infoce, and the retainer member is arranged above and on the rear side of the bumper infoce. A hollow structure is formed between the front side wall portion and the rear side wall portion, and insertion holes for inserting the hooks are formed in the front side wall portion and the rear side wall portion, respectively. The insertion hole formed in is a hook mounting screw portion into which the tip of the support rod of the hook can be screwed , and the insertion hole formed in the front side wall portion is a load serving as a support base end of the hook. It is characterized by being a support part.
In the retainer member, it is desirable that the left and right side surfaces are formed without walls .
Further, it is desirable that a crash box formed in a hollow box body and fixed to the rear surface of the bumper infoce is provided behind the retainer member.

According to such a configuration, the hook is arranged at a position higher than the bumper infose, so that the hook cover is provided in the area of the bumper cover of the outer plate color. That is, since it does not straddle the bumper cover to be plated, the degree of freedom in design can be improved.
Further, by fixing the rearmost end portion of the retainer member having the load support portion for attaching the hook and the hook attachment screw portion to the bumper infoce by welding 33, the support strength when the hook is attached can be secured. .. Further, the retainer member has a hollow structure between the load support portion and the hook mounting screw portion, so that the load absorption performance at the time of collision can be improved.
Further, when the retainer member has a solid structure instead of a hollow structure, in order to fix it to the upper surface of the bumper infos, for example, it is necessary to form a tightening flange around it and bolt it, but since it is a hollow structure. , The bottom wall may be fixed with bolts. That is, the process of forming the flange by shaving is not required, and the cost can be reduced (the number of fastening points on the upper surface is also reduced from the minimum of 4 to 2).
Furthermore, since it has a hollow structure, it is possible to extrude aluminum instead of cutting it from solid aluminum, and the processing time, that is, the cost can be significantly reduced.

According to the present invention, in a vehicle, a hook attachment structure capable of ensuring support strength when the hook is attached and load absorption performance at the time of a collision, and further, cost reduction can be realized without restricting the vehicle body design. Can be provided.

FIG. 1 is an exploded perspective view of a hook mounting structure according to the present invention. FIG. 2 is a cross-sectional view of the hook mounting structure of the present invention. FIG. 3 is a perspective view showing a structure when a hook is attached to a conventional bumper infos. FIG. 4 is a cross section of the rear structure of an automobile to which the structure of FIG. 3 is applied. FIG. 5A is a rear view of the vehicle showing a conventional rear bumper, and FIG. 5B is a cross-sectional view of a hook cover portion.

Hereinafter, embodiments of the hook mounting structure according to the present invention will be described with reference to the drawings. The hook attachment structure according to the present invention is a structure for attaching a hook for lashing or towing to a front or rear bumper of a vehicle. FIG. 1 is an exploded perspective view of a hook mounting structure according to the present invention. FIG. 2 is a cross-sectional view of the hook mounting structure of the present invention.
In the following description of the embodiment, the case where the hook is attached to the rear part of the vehicle will be described, but even when the hook is attached to the front part of the vehicle, the hook attachment structure according to the present invention is used. As for the positional relationship in the hook mounting structure, the front side is defined as the front side and the back side (inside the vehicle) is defined as the rear part when viewed from the outside of the vehicle.

The hook attachment structure shown in FIG. 1 shows an example in which a hook is attached to the rear portion of the vehicle as described above. As shown in FIGS. 1 and 2, the hook mounting structure 1 includes a retainer member 3 that is screwed with the tip of a support rod 2a of a hook 2 having a hook portion main body 2b. The retainer member 3 is made of aluminum, for example, and is formed in an inverted L shape in a side view, and the upper portion serving as a mounting portion of the hook 2 has a hollow structure.

As shown in FIG. 1, insertion holes 3a1 and 3b1 for inserting the hook 2 are formed in the front side wall portion 3a and the rear side wall portion 3b of the retainer member 3, respectively, and the insertion hole 3b1 has the tip of the hook 2. A screw groove that can be screwed is cut. That is, the insertion hole 3a1 serves as a load support portion, and the insertion hole 3b1 serves as a hook mounting screw portion.

Further, the left and right side surfaces of the retainer member 3 are in a state where there is no wall so as to be easily crushed when an impact is received. Further, a large through hole 3c1 is formed in the upper side wall portion 3c, and insertion holes 3d1 and 3d2 for inserting the bolts B1 and B2 are formed in the lower side wall portion 3d. Since the large through hole 3c1 is formed in the upper side wall portion 3c, the screwing operation after the bolts B1 and B2 are inserted into the insertion holes 3d1 and 3d2 can be easily performed at the time of assembly. Further, since a large through hole 3c1 is formed in the upper side wall portion 3c, the structure is more likely to be crushed when subjected to an impact.

The bolts B1 and B2 are screwed into the screw holes 10a and 10b provided on the upper surface side of the rear bumper informose 10, respectively. That is, the upper portion of the retainer member 3 is arranged on the upper surface of the rear bumper assembly 10. At that time, the lower wall portion 3e of the retainer member 3 sandwiches the wall portion 4a of the crash box 4 which is a hollow box member. It is arranged so as to be in contact with the back surface of the reinforce 10.

As shown in FIG. 1, screw holes 10c, 10d, 10e, and 10f for fixing the wall portion 4a of the crash box 4 are formed on the back surface of the rear bumper informose 10, and each of them is formed in the wall portion 4a. Bolts B3, B4, B5, and B6 are screwed into the screw holes 10c, 10d, 10e, and 10f, respectively, via the insertion holes 4a1, 4a2, 4a3, and 4a4. As a result, the crash box 4 is joined in close contact with the back side of the rear bumper infoose 10.

On the other hand, two screw holes 3e1 and 3e2 are formed in the lower wall portion 3e of the retainer member 3, and insertion holes 10g and 10h for inserting the two bolts B7 and B8 are formed on the back surface of the rear bumper infoce 10. Is formed.
Further, the wall portion 4a of the crash box 4 is formed with insertion holes 4a5 and 4a6 for inserting the bolts B7 and B8.

Then, as described above, in a state where the lower wall portion 3e of the retainer member 3 is in contact with the back surface of the rear van pariinfoose 10 with the wall portion 4a of the crash box 4 sandwiched between them, the bolt B7 is provided from the back surface side (inside the wall) of the rear van pariinfoose 10. , B8 are inserted into the insertion holes 10g, 10h, 4a5, 4a6, and screwed into the screw holes 3e1 and 3e2. As a result, the retainer member 3 is fixed to the rear bumper informose 10.
As shown in FIG. 1, a large through hole 10i is formed on the front surface side of the rear bumper informose 10 so that the bolts B7 and B8 can be easily screwed. Further, it is preferable to provide the large through hole 10i in this way because it is easily deformed when subjected to an impact.

In the state where the retainer member 3 is fixed to the rear van paris infos 10 in this way, as shown in FIG. 2, a rear bumper absorber 20 that absorbs the impact on the rear van paris infos 10 is arranged behind the rear van paris infos 10 and is a crash box. A lower back 21 is connected to the front of the fourth, and an end portion of a rear side member 25 extending in the front-rear direction of the vehicle is further connected to the lower back 21.

According to the hook mounting structure 1 configured in this way, as shown in FIG. 2, the hook 2 is arranged at a position higher than that of the rear bumper assembly 10. Therefore, the hook cover 30 is a rear bumper cover having an outer panel color. It is provided in the area of 31. That is, since it does not straddle the rear bumper cover 32 to be plated, the degree of freedom in design can be improved.
Further, the hook 2 is fixed by welding the rearmost end portion of the retainer member 3 having the load support portion (insertion hole 3a1) for mounting the hook 2 and the hook mounting screw portion (insertion hole 3b1) to the rear bumper infoce 10. It is possible to secure the support strength when the is attached. Further, the retainer member 3 has a hollow structure between the load supporting portion and the hook mounting screw portion, so that the load absorbing performance at the time of collision can be improved.

Further, when the retainer member 3 has a solid structure instead of a hollow structure, in order to fix it to the upper surface of the rear bumper infos 10, for example, it is necessary to form a tightening flange around the periphery and bolt it. Therefore, the bottom wall may be fixed by bolts B1 and B2. That is, the process of forming the flange by shaving is not required, and the cost can be reduced (the number of fastening points on the upper surface is usually reduced from 4 to 2).
Further, since it has a hollow structure, it can be extruded instead of being machined from solid aluminum, and the processing time, that is, the cost can be significantly reduced.

In the above embodiment, the case where the hook is attached to the rear bumper of the vehicle has been described as an example, but the present invention is not limited to the case where the hook is attached to the front bumper of the vehicle. Can be done.
Further, in the above-described embodiment, the retainer member 3 is expressed as an inverted L-shape, but since the upper portion serving as the attachment portion of the hook 2 has a hollow structure, it may be expressed as an inverted P-shape.
Further, the hollow structure of the retainer member 3 does not have a side wall as shown in FIGS. 1 and 2, but the present invention is not limited to this embodiment, and a side wall may be provided.

1 Hook mounting structure 2 Hook 2a Support rod 3 Retainer member 3a1 Insertion hole (load support part)
3b1 insertion hole (hook mounting screw part)
4 Crash Box 10 Rear Bumper Infoce (Bumper Infoce)

Claims (3)

A hook attachment structure in which a hook composed of a hook portion main body and a support rod for supporting the hook portion main body can be attached to a bumper informose extending in the vehicle width direction via a retainer member fixed to the bumper informose. ,
The retainer member has a front side wall portion arranged above and on the front side of the bumper infoce, and a rear side wall portion arranged above and on the rear side of the bumper informose, and a hollow structure is formed between them. ,
Insertion holes for inserting the hooks are formed in the front side wall portion and the rear side wall portion, respectively.
The insertion hole formed in the rear side wall portion is a hook mounting screw portion into which the tip of the support rod of the hook can be screwed .
The hook mounting structure is characterized in that the insertion hole formed in the front side wall portion is a load support portion serving as a support base end of the hook. The hook mounting structure according to claim 1, wherein the left and right side surfaces of the retainer member are formed without walls . The hook mounting structure according to claim 1 or 2, wherein a crash box formed in a hollow box body and fixed to the rear surface of the bumper infoce is provided behind the retainer member.

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