JPH0635695Y2 - Vehicle traction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a traction device provided at a front portion or a rear portion of a vehicle, and more particularly to a traction device provided with measures against a vehicle collision.

[Prior Art] As a conventional device of this type, for example, FIGS.
There is something like the one shown in the figure. In the drawings, reference numeral 1 is a front side member as a vehicle body strength member provided at the front end of the vehicle body, and a vertical wall portion 1a of the front side member 1 extending in the vehicle front-rear direction has a bar-shaped hook via a plate-shaped bracket 2. The member 3 is attached.

In this bracket 2, a flange portion 2c for improving strength is formed around a plate-shaped general surface portion 2a. On the other hand, the rod-shaped hook member 3 has a substantially U-shape, and both end portions 3a of the rod-shaped hook member 3 are arc-welded to the general surface portion 2a of the bracket 2, and the curved portion 3b projects outward from the bracket 2.

The bracket 2 is fixed to the vertical wall portion 1a of the front side member 1 by inserting bolts (not shown) into the plurality of insertion holes 2b formed in the general surface portion 2a.

In this state, the curved portion 3b of the rod-shaped hook member 3 projects from the front bumper 4, and the curved portion 3b of the rod-shaped hook member 3 is pulled by a rope or the like.

By the way, in such a towing device, since the air spoiler 4a is formed in the lower portion of the front bumper 4 and extends almost to the vicinity of the ground, the rod-shaped hook member 3 can be extended downward from the front side member 1. Because you can't
The curved portion 3b is made to project forward from the front bumper 4.

In addition, as this kind of thing, for example, the actual development Sho 56-70406
There is one as described in the official gazette.

[Problems to be Solved by the Invention] However, in such a conventional traction device,
Since the curved portion 3b of the bar-shaped book member 3 projects forward from the front bumper 4 for the above reason, as shown in FIG. 5, the curved portion 3b is attached to the curb 5 or the like before the vehicle body collides when the vehicle moves forward. Will collide. Then, since the bar-shaped hook member 3 is arranged along the input direction of the collision load,
Since the impact force acts on the rod-shaped hook member 3 as a compressive load, it is directly input to the front side member 1 via the rod-shaped hook member 3 and there is a problem that the vehicle body is greatly damaged.

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned conventional problems, and welds a plate-shaped bracket to a U-shaped rod-shaped hook member with a curved portion protruding. And the bracket is fixed to a mounting surface portion of the vehicle body strength member at the front end portion or the rear end portion of the vehicle body that extends in the vehicle front-rear direction, and the bar-shaped hook member is disposed in the vehicle front-rear direction to bend the curve. In the vehicle traction device in which the portion is projected to the outside of the vehicle body, the bracket has an embossed portion that is open to the outside of the vehicle in a predetermined size on the general surface portion, and bulges at the end of the embossed portion on the outside of the vehicle. While forming an inclined surface portion that is inclined in the opposite direction, the bar-shaped hook member is extended in the vehicle front-rear direction and is opposite to both end portions, and is parallel to and offset from the both end portions. Extended to the state A curved portion and a bent portion continuously provided between the both end portions and the curved portion, the both end portions are inserted into the embossed portion and welded, and the bent portion is inclined. The traction device for a vehicle is characterized in that it is brought into contact with a surface portion, and the general surface portion of the bracket is attached to the attachment surface portion with the rod-shaped hook member interposed.

[Operation] According to this means, when the curved portion of the rod-shaped hook member collides with the curb or the like due to the forward movement or the backward movement of the vehicle, the rod-shaped hook member is provided at the curved portion which is the collision portion and the vehicle body fixing portion. Since the bent portion is formed between the both end portions, a bending moment acts on the bent portion, and the rod-shaped hook member is bent. Due to this bending, a collision input is not absorbed and a large collision load is not directly transmitted to the vehicle body strength member side as in the conventional case.

On the other hand, when the vehicle is towed, a rope or the like is hooked on the curved portion of the rod-shaped hook member to pull the vehicle, but in this case, the bent portion of the rod-shaped hook member is folded due to the offset between the curved portion and both ends. A bending moment acts on the bend. However, a part of this bending moment is borne by the inclined surface portion of the embossed portion of the bracket that presses the bent portion, so that it is possible to secure sufficient strength against the traction force.

[Embodiment] Hereinafter, the present invention will be described based on an embodiment.

1 to 3 are views showing an embodiment of the present invention.

First, the configuration will be described. In the figure, reference numeral 11 is a front side member as a vehicle body strength member provided in the front portion of the vehicle body, and a vertical wall portion 11a as a mounting surface portion of the front side member 11 along the vehicle front-rear direction is A rod-shaped hook member 13 is attached via a bracket 12.

The bracket 12 has a flat plate shape, and a flange portion 12c is formed on the peripheral portion of the general surface portion 12b in which a plurality of mounting holes 12a for inserting mounting bolts (not shown) are formed. An embossed portion 12d having a predetermined size is formed. The embossed portion 12d is open on the front end side (the vehicle outer side end portion), and an inclined surface portion 12e that is inclined in the direction opposite to the bulging direction is formed on the front end portion side.

On the other hand, the bar-shaped hook member 13 has a substantially U shape,
The side of 13a is fitted in the embossed portion 12d.
Both end portions 13a formed on the vehicle rear end portion side and the curved portion 13b formed on the vehicle front end portion side are extended in parallel along the vehicle front-rear direction in an offset state, and between the both. , The bracket 12 is continuous via a bent portion 13c bent at the same angle so as to come into contact with the inclined surface portion 12e.

The rod-shaped hook member 13 has both end portions 13a arc-welded to the embossed portion 12d of the bracket 12 over the entire length, and the bent portion 13c has an end portion on the curved portion 13b side that is inclined with respect to the embossed portion 12d. One point is attached to the front end 12f of the surface 12e by arc welding.

The bracket 12 to which the rod-shaped hook member 13 is fixed in this way
Is fixed to the vertical wall portion 11a of the front side member 11 by inserting a bolt (not shown) into the mounting hole 12a. In this state, the bent portion 13c of the bar-shaped hook member 13 is
And the curved portion 13b is the front end 11b of the front side member 11.
As shown in FIG. And
The end portions 13a of the rod-shaped hook member 13 have an embossed portion 12d.
It is sandwiched between the front side member 11 and the front side member 11.

Next, the operation of the traction device having such a configuration will be described.

When pulled, an external force as shown by arrows A, B or C acts on the curved portion 13b of the rod-shaped hook member 13 as shown in FIG. Then, this external force acts not only on the tensile load but also on the bending moment (F · l) by bending the rod-shaped hook member 13. However, the inclined surface portion 12e of the embossed portion 12d, which has improved strength, presses the bent portion 13c of the bar-shaped hook member 13, so that the inclined surface portion 12e bears a part of the bending moment (F · l). can do. In addition, both end portions 13a of the bar-shaped hook member 13
Since it is sandwiched between the bracket 12 and the front side member 11, both end portions 13a of the rod-shaped hook member 13 are not separated from the bracket 12. Therefore, the strength against the traction force can be improved.

On the other hand, when the curved portion 13b of the rod-shaped hook member 13 collides with the curb 5 as in the conventional case due to the forward movement of the vehicle, as shown in FIG. 3, in this case, the bent portion 13c of the rod-shaped hook member 13 acts. The bending moment is in the opposite direction as when towing. Therefore, the bent portion 13c of the rod-shaped hook member 13 cannot be pressed by the inclined surface portion 12e, and the bent portion 13c of the rod-shaped hook member 13 and the bracket 12 are welded at one point. , As it is easily peeled off, as shown in FIG.
The bent portion 13c of the rod-shaped hook member 13 is bent.

As a result, the collision force is less likely to be absorbed by the bending and directly transmitted to the front side member 11 via the rod-shaped hook member 13 unlike the conventional case, and the damage to the vehicle body is reduced as compared with the conventional case. .

In the above embodiment, the bent portion 13c of the bar-shaped hook member 13 is
And, the embossed portion 12d and the front end portion 12f of the inclined surface portion 12e are attached at one point, but this portion does not necessarily have to be fixed. Further, in the above-described embodiment, the traction device provided on the front end side of the vehicle body has been described, but the present invention is not limited to this, and it is of course possible to provide it on the rear end side of the vehicle body.

[Effect of the Invention] As described above, according to the present invention, the bracket is formed with an embossed portion having a predetermined size that is open to the outside of the vehicle and the end of the embossed portion on the outside of the vehicle. On the other hand, while forming an inclined surface portion that inclines in the direction opposite to the bulging direction, the rod-shaped hook member is extended along the vehicle front-rear direction, is opposite to both end portions, and is parallel to the both end portions.
Further, it has a curved portion extended in an offset state and a bent portion continuously provided between the both end portions and the curved portion, and the both end portions are inserted into the embossed portion and welded. At the same time, the bent portion is brought into contact with the inclined surface portion, and the general surface portion of the bracket is attached to the attachment surface portion with the rod-shaped hook member interposed, whereby the curved portion of the rod-shaped hook member collides. In this case, since the bending moment is not carried by the inclined surface portion of the bracket, this rod-shaped hook member is bent at the bent portion, so that the collision load is directly input to the vehicle body strength member as in the conventional case. It is possible to reduce damage without causing damage. Further, when a pulling force is applied to the rod-shaped hook member during towing, part of the load can be borne by the inclined surface portion of the embossed portion having high strength, and both ends of the rod-shaped hook member are attached to the bracket and the vehicle body. Since it is sandwiched between the strength member and the strength member, there is a practically useful effect that the strength against the traction force can be improved.

[Brief description of drawings]

1 to 3 are views showing an embodiment of a vehicle traction device according to the present invention. FIG. 1 is a sectional view taken along the horizontal direction of the device, and FIG. 2 is an attachment of a bracket and a rod-like hook member. FIG. 3 is a perspective view showing a state, FIG. 3 is a sectional view corresponding to FIG. 1 showing a collision state of a rod-shaped hook member, FIGS. 4 to 6 are views showing a conventional example, and FIG. FIG. 5 is a schematic side view, FIG. 5 is a sectional view corresponding to FIG. 1, and FIG. 6 is a perspective view corresponding to FIG. 11 ... Front side member (body strength member) 11a ... Vertical wall portion (mounting surface portion) 12 ... Bracket 12b ... General surface portion 12d ... Embossed portion 12e ... Inclined surface portion 12f ... Front end portion 13 ... Rod hook member 13a ... Both ends 13b ... Curved Part 13c ... Bent part

Claims (1)

[Scope of utility model registration request] 1. A vehicle having a vehicle body strength member at a front end portion or a rear end portion of a vehicle body, wherein a substantially U-shaped bar-shaped hook member is fixed to a plate-like bracket by welding with a curved portion projected. In a vehicle traction device fixed to a mounting surface portion along the front-rear direction, the rod-shaped hook member is disposed along the vehicle front-rear direction, and the curved portion is projected to the outside of the vehicle body. In addition to forming an embossed portion that is open to the outside of the vehicle in a predetermined size, and forming an inclined surface portion that is inclined in a direction opposite to the bulging direction at the end of the embossed portion on the outside of the vehicle, the rod-shaped hook member is Both end portions that extend along the front-rear direction and face each other, a curved portion that extends in parallel with the both end portions and are offset, and a continuous portion between the both end portions and the curved portion. With a bent part In a state where the both end portions are inserted into the embossed portion and welded, the bent portion is brought into contact with the inclined surface portion, and the general surface portion of the bracket is the attachment surface portion with the rod-shaped hook member interposed. A vehicle traction device characterized by being attached.