JPH062843Y2 - Bumper structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to, for example, a front bumper of an automobile, and more particularly to improvement of a reinforcing structure thereof.

(Prior Art) Bumpers are attached to front and rear ends of a vehicle, for example, a vehicle, to protect the vehicle body. The front side of the bumper, in particular, is composed of a bumper face made of, for example, a synthetic resin material, and a back beam formed by bending a metal plate forming a skeleton of the bumper face.

Incidentally, the bumper face is formed in a substantially U-shape in plan view, and is attached along the end face and both side faces of the vehicle body. It is well known that the length of both bent portions along both side surfaces is extremely small compared to the length of the straight portion connecting these bent portions. Further, the back beam is attached along the back surface of the straight portion of the bumper face and has a flat straight shape. However, the vertical cross section is complicatedly bent to have strength, and the upper and lower ends are attached to the upper and lower pieces of the bumper face. Moreover, the substantially vertical surface of the back beam is formed so as to be separated from the vertical surface of the bumper face,
The bumper face is designed to receive a shock from the back beam in stages.

By the way, in the front bumper configured in this way, there is a drawback in that the strength of both bent portions of the bumper face is weak. That is, the back beam is not shaped to reinforce both bent portions of the bumper face. The reason for this is that since the bumper face is made of a synthetic resin material, it is difficult to obtain the accuracy of its width dimension, and a dimensional difference occurs individually. Further, the back beam is formed by bending a metal plate and has a large width dimension, and therefore, a dimensional difference is likely to occur similarly. It may not be possible to actually mount it. Therefore, since both bent portions of the bumper face are in a free state, there is a strong tendency to fall inward, and when an external force is applied, a grapple easily occurs.

(Problems to be Solved by the Invention) The present invention intends to provide a bumper structure capable of reinforcing the entire bumper face by reliably preventing the bumper face from inclining and grabbing as described above. .

[Constitution of device]

(Means for Solving Problems) That is, according to the present invention, a bumper face made of a synthetic resin material is formed into a substantially U-shape in a plan view from an end surface of a vehicle body along both side surfaces, and a metal plate is bent. In a structure in which a beam is attached to the back surface of the straight portion of the bumper face to reinforce the same, one end portions of auxiliary metal fittings bent in a substantially L shape in a plane are attached to both end portions of the back beam. A bumper characterized in that the other end is attached to a bent portion of the bumper face, a flange is formed on an upper end portion of the reinforcing metal fitting, and the flange is in close contact with a back surface of the bent portion upper end of the bumper face. It is a structure.

(Operation) According to such a configuration, the auxiliary metal fitting can hold both the bent portions of the bumper face to improve the rigidity.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings by applying it to a front bumper. The front bumper is mounted over the front-side end surface of the vehicle body S and a part of both side surfaces thereof, only a part of which is shown in FIGS. 3 and 4. The front bumper is composed of a bumper face 1 that constitutes the outer surface side and a back beam 2 that reinforces the bumper face 1. The bumper face 1 is made of, for example, a synthetic resin material, the front surface side of which has the same color as the body panel constituting the vehicle body S, and a molding is integrally provided over substantially the center thereof. The bumper face 1 has a modified U-shaped cross section in the up-down direction, and is formed in a generally U-shaped plane as a whole, and includes a straight portion 1a and both bent portions 1b and 1b. The back beam 2 is formed by bending a metal plate so that a part of its cross section has a substantially U-shape and is straight in a plane. The upper end of the back beam 2 is screwed to the upper piece 1c of the bumper face 1, and the lower end is connected to a holding stay (not shown).
This is screwed to the lower piece 1d of the bumper face 1 to form an integrally assembled front bumper. However,
The vertical surface of the bumper face 1 and the vertical surface of the back beam 2 are partially separated.

One end of an auxiliary metal fitting 3, which will be described later, is attached to both ends of the back beam 2 and is integrally connected. That is, as shown in FIG. 5, the auxiliary metal fitting 3 is formed by bending a metal plate into a substantially L-shape in a plane, and a pair of mounting elongated holes 4, 4 are vertically arranged at the end of the longitudinal portion 3a. Is provided. Short section 3b
A pair of upper and lower mounting holes 5 and 5 are formed at the ends of the.
Needless to say, the cross-sections of both the long portion 3a and the short portion 3b are complicatedly bent to maintain strength. As shown in FIG. 3, the short-side portion 3b provided with the mounting holes 5 and 5 faces and is fixed to the bosses 6 and 6 projecting from the back surface side of the bent portion 1a of the bumper face 1. It is fixed by bolts 7, 7. In this portion, the upper end portion of the auxiliary metal fitting 3 is extended so as to be in close contact with the upper end portion of the bumper face 1 only by the dimension i as appropriate. Further, the auxiliary metal fitting 3 is provided with a flange 3c integrally bent along the upper end thereof, and the flange 3c is an upper piece formed along the upper end of the bent portion 1b of the bumper face 1. Close to part 1c. Longitudinal portion 3a in which the mounting holes 5 and 5 are formed
As shown in FIG. 4, is attached and fixed to the end portion of the back beam 2 via fixing members 8 made up of fixing bolts and nuts.

When actually assembling the front bumper, the back beam 2 is first attached to the bumper face 1. Next, the auxiliary metal fitting 3 is prepared, and the short portion 3b is fixed to the bent portion 1b of the bumper face 1. Finally, the longitudinal portion 3a of the auxiliary metal fitting 3 is attached and fixed to the back beam 2. At this time, the mounting long holes 4 and 4 provided in the longitudinal portion 3 a face the mounting holes (not shown) provided in the back beam 2.
Therefore, even if the back beam 2 has a dimensional difference in the width direction,
The mounting long holes 4 and 4 can absorb this.

After all, the bumper face 1 has the straight portion 1a and the bent portion 1
The back beam 2 and the auxiliary metal fittings 3 are in contact with each other over b and 1b. In particular, the bent portions 1b, 1b are reinforced by the auxiliary metal fittings 3, 3 so that the rigidity is improved and no glistening occurs even if an external force is applied. Further, since the flange 3c formed along the upper end of the auxiliary metal fitting 3 is in close contact with the rear surface of the upper piece 1c formed at the upper end of the bumper face 1, the inward tilt of the bumper face 1 is reliably controlled. .

It should be noted that the above embodiment has been described by applying to the front bumper, but the present invention is not limited to this and may be applied to the rear bumper.

[Effect of device]

As described above, according to the present invention, by providing the back beam and the auxiliary metal fitting of the optimal shape structure, the rigidity is improved over the entire bumper, the inward fall and the graffiti are prevented, and the reliability is improved. The effect is achieved.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an exploded perspective view of a front bumper structure, FIG. 2 is a partial perspective view of the assembled state, and FIG. 3 is a III-III line of FIG. 4 is a vertical sectional view taken along line IV-IV of FIG. 2, and FIG. 5 is a perspective view of an auxiliary metal fitting. S ... vehicle body, 1 ... bumper face, 1a ... straight part, 1b ...
Bent part, 2 ... back beam, 3 ... auxiliary metal fittings.

Claims (1)

[Scope of utility model registration request] 1. A bumper face which is made of a synthetic resin material and which is formed in a substantially U-shape in a plane from the end face of the vehicle body to both side faces,
In a back beam which is formed by bending a metal plate and is attached to the back surface of the straight portion of the bumper face to reinforce the same, the back beam is bent in a substantially L shape in a plane. The auxiliary metal fittings are attached to both ends of the bumper face and the other end is attached to the back surface of the bent portion of the bumper face, and a flange is formed on the upper end of the reinforcing metal fitting. Bumper structure characterized by close contact with the upper back surface of the bent part of the face.