JPH063753U - Car bumper structure - Google Patents

Abstract

(57) [Summary] [Purpose] The upper surface of the shock absorber and the inner surface of the bumper skin are brought into contact with each other, and the shock force applied to the upper end of the bumper is transmitted to and absorbed by the shock absorber to deform the bumper skin. Surely prevent. In a bumper structure of an automobile in which a shock absorber 6 is interposed between a bumper reinforcement 4 and a bumper face 1, the shock absorber 6 is brought into contact with the inner surface of the bumper face 1 only at its upper surface 6a. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a bumper structure of an automobile, and more particularly to impact countermeasures.

[0002]

[Prior art]

 Conventionally, as a bumper structure of an automobile, as disclosed in, for example, Japanese Patent Application Laid-Open No. 62-128732, a type in which a shock absorber is interposed between a bumper reinforcement and a bumper skin is known. ing. Further, in this type, a predetermined space is provided between the bumper skin and the shock absorber, and both are not in contact with each other not only on the upper surface but also on the front surface. As described above, the fact that the two are not in contact with each other is because the strength of the impact force applied to the bumper is taken into consideration.When a strong impact force is applied, the bumper skin is bent. The impact absorber is brought into contact with the impact absorber to absorb the impact force, and at this time, the bumper reinforcement is used to back up the impact absorber. On the other hand, when a weak impact force that does not damage the bumper skin is applied, the bumper skin does not flex so much that it does not contact the shock absorber.In this case, the bumper skin itself does not absorb the impact force. This is because it can be absorbed by.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional bumper structure, as described above, the entire area between the shock absorber and the bumper skin is in a non-contact state. Therefore, when an impact force is applied to the upper end portion of the bumper, the bumper skin is damaged. There is a possibility that the upper surface of the vehicle will bend due to sideslip and not come into contact with the shock absorber. In this case, the shock force cannot be absorbed by the shock absorber, and the shock absorber is backed up by bumper reinforcement. However, there was a problem that the bumper skin would be deformed.

The present invention has been made in view of the above points, and an object of the present invention is to make the upper end of the bumper by contacting the upper surface of the shock absorber with the inner surface of the bumper skin as described above. The impact force applied to the part is transmitted to and absorbed by the shock absorber, and the bumper reinforcement is used to back up the shock absorber to prevent deformation of the bumper skin.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the solution of the present invention is a bumper structure of an automobile in which a shock absorber is interposed between a bumper reinforcement and a bumper skin. Only the inner surface of the bumper was brought into contact with.

[0006]

[Action]

 With the above configuration, in the present invention, the impact absorber interposed between the bumper reinforcement and the bumper skin is in contact with the inner surface of the bumper skin only at its upper surface, and therefore the upper end portion of the bumper is Even if the impact force is applied to the upper surface of the bumper skin, the impact force is reliably transmitted to and absorbed by the shock absorber, and the bumper skin is backed up by the bumper reinforcement. Will be reliably prevented.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 5 shows a rear bumper A of an automobile to which a bumper structure according to an embodiment of the present invention is applied. The rear bumper A is provided with a resin bumper face 1 as a bumper skin, and below the bumper face 1, a resin bumper wing 2 for rectifying the air wound under the bumper face 1 is provided, for example, by an injection. It is integrally formed by shot molding or the like, and an air escape hole 3 extending in the vehicle width direction is formed between the two.

As shown in FIG. 1, a bumper reinforcement 4 is disposed inside the bumper face 1, and the bumper reinforcement 4 has screws 5 and 5 at the upper and lower ends thereof. , ... are connected and attached.

Further, as shown in FIG. 4, a shock absorber 6 made of a foamed material such as polypropylene or polyethylene is interposed between the bumper reinforcement 4 and the bumper face 1. The rear bumper A of the type in which the shock absorber 6 is interposed between the bumper reinforcement 4 and the bumper face 1 in this way is called a so-called soft bumper, which absorbs the impact force applied to the rear bumper A by a collision, For example, the car body is not affected even if it collides at 8 km / h.

Further, as a feature of the present invention, as shown in FIGS. 1 to 3, the shock absorber 6 is brought into contact with the inner surface of the bumper face 1 only at the upper surface 6a thereof, and at other places, the bumper face 1 is contacted. Is not abutted on the inner surface of the bumper face 1 with a predetermined space (for example, 3 mm) between them. The relationship between the shock absorber 6 and the bumper reinforcement 4 is that, in the middle of the vehicle width direction, as shown in FIG. 1, the shock absorber 6 is a "U" shape of the bumper reinforcement 4. The contact is made only on the vertical surface of the bulging portion 4a, and, as shown in FIG. 2, it is made to contact both the vertical surface and the upper surface of the bulging portion 4a of the bumper reinforcement 4 near the end in the vehicle width direction. Further, at the end portion in the vehicle width direction, as shown in FIG. 3, the bumper reinforcement 4 is in contact with both the vertical surface and the upper surface of the bulging portion 4a. This abutting portion is shown by oblique lines on the shock absorber 6 in FIG. 4, and the hatched area B in FIG. 4 is the abutting portion corresponding to the cross section taken along the line I-I in FIG. The area is a contact point corresponding to the cross section along the line III-III in FIG. As described above, the impact absorber 6 and the bumper reinforcement 4 are partially provided at the abutting portions to prevent the impact absorber 6 from being displaced due to variations in shape.

As described above, in the present embodiment, the shock absorber 6 interposed between the bumper reinforcement 4 and the bumper face 1 is brought into contact with the inner surface of the bumper face 1 only at the upper face 6a thereof. Therefore, even if an impact force is applied to the upper end portion of the rear bumper A and the upper surface of the bumper face 1 is bent in a sideways state, the impact force can be reliably transmitted to the impact absorber 6 and absorbed, and The shock absorber 6 can be backed up by the bumper reinforcement 4 and the deformation of the bumper face 1 can be reliably prevented.

[0013]

[Effect of device]

 As described above, according to the present invention, the impact absorber interposed between the bumper reinforcement and the bumper skin is brought into contact with the inner surface of the bumper skin only at its upper surface, so that the upper end portion of the bumper is The impact force applied to the shock absorber can be transmitted to and absorbed by the shock absorber, and the deformation of the bumper skin can be reliably prevented.

[Brief description of drawings]

1 is a cross-sectional view taken along line I-I of FIG.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a front view of a shock absorber.

FIG. 5 is a front view showing a part of a rear bumper.

[Explanation of symbols]

 1 ... Bumper face (bumper skin) 4 ... Bumper reinforcement 6 ... Impact absorber 6a ... Impact absorber upper surface A ... Rear bumper

Claims (1)

[Scope of utility model registration request] 1. A bumper structure for an automobile, wherein a shock absorber is interposed between a bumper reinforcement and a bumper skin, wherein the shock absorber is in contact with an inner surface of the bumper skin only at its upper surface. A bumper structure for automobiles that is characterized by that.