JP2512917Y2 - Car bumper equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a bumper device for an automobile, and more particularly to measures for preventing deformation of a vehicle body panel during a light collision of the automobile.

(Prior Art) Generally, as an example of bumpers arranged at front and rear ends of an automobile, as disclosed in Japanese Utility Model Laid-Open No. 62-194162,
The edge of the bumper side portion is bent toward the center of the vehicle body to form a bent flange portion that extends in the vertical direction, while the portion of the vehicle body panel that faces the bent flange portion is bent toward the vehicle body center side and is bent in the vertical direction. There is known a structure in which a mounting flange portion that extends to the front is formed, and the bumper side portion is assembled to the vehicle body panel in a state where both the flange portions are abutted.

(Problems to be Solved by the Invention) By the way, as described above, in the structure in which the bumper side portion and both flange portions of the vehicle body panel are butted,
When a collision such as a frontal collision or a rear collision occurs, the bumper moves rearward or forward due to the collision load, so that the bumper side portion presses the vehicle body panel by this movement, and this pressure deforms the vehicle body panel around the butted portion. There's a problem. Since such deformation of the vehicle body panel occurs even when the bumper moves slightly, it occurs even during a light collision with a small collision load, and it is hard to say that the functions of the bumper are fully utilized. there were.

Then, this invention aims at obtaining the structure which prevents deformation | transformation of a vehicle body panel at the time of a light collision with a small collision load.

(Means for Solving the Problems) In order to achieve the above object, the present invention is designed to absorb a collision load in the vicinity of a butting portion between a bumper and a vehicle body panel. This specific structure is provided with an upper part and a lower part made of the same material, and the upper part and the lower part are provided with a center part extending in the vehicle width direction and from the left and right ends of the center part to the vehicle body. Consists of a side portion extending along the side portion. Then, the load receiving surface of the lower center portion that receives a collision load at the time of a vehicle collision is positioned outside the upper center portion in the vehicle front-rear direction. On the other hand, the edge of the upper side portion is abutted against the vehicle body panel, whereas the edge of the lower side portion is not abutted against the vehicle body panel. Further, when a collision load acts only on the lower center portion during a vehicle collision, the lower side portion is moved relative to the upper side portion in the collision load acting direction, and only the upper side portion is deformed. In order to absorb the collision load, the boundary part between these side parts is allowed to move relative to the upper side part of the lower side part in the longitudinal direction of the vehicle body while allowing the upper part to move with the movement of the lower side part. The configuration is such that an allowance part is provided that allows the side part only to be deformed in the vehicle width direction.

(Operation) According to the present invention having the above-described configuration, when a collision load is input to the bumper during a light collision of the vehicle, this load acts on the center of the lower side of the bumper. Since the allowance is provided at the boundary between the lower and upper side parts, this load causes the lower side part to move relative to the upper side part in the direction of the collision load. To do. Further, with the movement of the lower side portion, only the side portion of the upper portion is deformed in the vehicle width direction at the formation position of the allowance portion. As a result, the load transmitted to the vehicle body panel is absorbed by this bending deformation, and the deformation of the vehicle body panel is prevented.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 2, an automobile 1 according to the present embodiment has a front grill 2 provided at a central portion of a front end thereof and headlamps 3, 3 arranged on both left and right sides of the front grill 2.
And a combination lamp 4 provided outside the headlamps 3 and at the front corner of the vehicle body, and a bumper 5 is provided below them. The bumper 5 is a soft facial type formed of a resin such as hard urethane, and a cushioning member is arranged inside the bumper 5 to form a bumper device. Also, this bumper 5
It is composed of an upper part 6 located on the upper side and a main body part 7 as the lower part in the present invention, which is located on the lower side, and both are integrally formed.

The upper portion 6 is a front portion 8 as an upper center portion in the present invention which extends in the left-right direction at the front end of the vehicle body, and a side portion which is continuous with the left and right sides of the front portion 8 and which is located on the left and right side surfaces of the vehicle body and extends in the vehicle front-rear direction. It consists of part 9 and.

The front part 8 is inclined forward as its surface faces downward, and the upper end of the front part 8 is bent backward,
The upper surface of the bent portion (not shown) is the front grill 2
It is also located close to the lower ends of the headlamps 3,3.

On the other hand, the side portions 9 are curved from the left and right ends of the front portion 8 in a shape corresponding to the shape of the combination lamp 4 and extend rearward, and the upper ends thereof are continuous with the upper ends of the front portions 8 and are folded toward the center of the vehicle body. The upper surface of the bent portion (not shown) is close to the lower end of the combination lamp 4. Further, the side portion 9 is inclined toward the outside of the vehicle body as the surface thereof faces downward. As shown in FIG. 3, a bent portion 9a formed by bending the side portion 9 toward the center of the vehicle body is formed on the rear end of the side portion 9, while the vehicle body panel facing the bent portion 9a. The front end of the front fender 10 is formed with a bent portion 10a which is bent toward the center of the vehicle body in the same manner as the bent portion 9a, and both bent portions 9a and 10a are bolted in a state of being butted against each other. It is integrally fastened by B.

On the other hand, the main body portion 7 is continuous with the front portion 11 as the lower center portion in the present invention, which extends in the left-right direction at the front end of the vehicle body in the same manner as the upper portion 6, and the left and right sides of the front portion 11, It consists of side parts 12 located on the left and right sides.

The front portion 11 is continuously formed below the front portion 8 of the upper portion 6, and the front surface of the upper half portion 11a thereof is formed as a vertical surface (load receiving surface). In other words, the front portion 11 of the main body portion 7 has a load receiving surface, which receives a collision load at the time of a vehicle front collision, located on the front side of the vehicle body with respect to the front portion 8 of the upper portion 6. A plate mounting portion 13 for mounting a license plate (not shown) is provided at the center of the upper half 11a in the vehicle width direction. Also, this upper half 11a
An apron portion 11b is formed below the apron portion 11b, and the apron portion 11b is inclined rearward downward. Further, an air introduction hole 11c for introducing the traveling wind into the vehicle body engine room is opened in the central portion of the apron portion 11b. On the other hand, the side part 12 is the side part 9 of the upper part 6.
The upper half portion 12a and the apron portion 12b are located in the lower part of the apron portion, as in the front portion 11. The rear end 12c of the side portion 12 extends rearward of the bent portion 9a that is the rear end of the upper portion 6, and the tire storage portion of the front fender 10 does not come into contact with the vehicle body panel. Is formed so as to be continuous with the lower end edge of the vehicle, and is movable rearward in the event of a vehicle front collision.

The feature of the present invention is that, as shown in FIG. 1, a slit 14 as an allowance portion is provided between the upper portion 6 and the main body portion 7.
Has been formed. The slit 14 extends forward from the vicinity of the bent portion 9a, which is the rear end of the side portion 9 of the upper portion 6, on the connection boundary line A between the upper portion 6 and the main body portion 7 with a predetermined length. That is, the side portion 9 of the upper portion 6 and the side portion 12 of the main body portion 7 are vertically separated at the portion where the slit 14 is formed.

Next, the operation of this configuration at the time of a slight front collision of the vehicle will be described. At the time of a slight front collision of the automobile 1, the arrow B in FIG.
The collision load acts in the direction as shown in. Then, this collision load acts on the main body portion 7 of the bumper 5, and the main body portion 7
Works to move backwards. However, a slit 14 is provided between the side portion 9 of the upper portion 6 and the side portion 12 of the main body portion 7, and the rear end 12c of the main body portion 7 is not in contact with the vehicle body panel. Since the rearward movement is possible, only the main body portion 7 is moved rearward by the action of the collision load as shown by the phantom line in FIG. 1, while the upper portion 6 is Only the side part 9 has a slit 14
Is bent and deformed so as to bulge in the vehicle width direction at a portion corresponding to the molding position. Therefore, the load transmitted to the periphery of the bent portion 10a of the front fender 10 is absorbed by this bending deformation, and the deformation of the front fender 10 is prevented.

Therefore, as described above, in this example, the upper portion 6 and the main body portion 7 are
With a simple configuration in which a slit 14 is provided between the front fender 10 and the front fender 10, deformation of the front fender 10 at the time of a slight front collision can be prevented.

Although the front bumper has been described in the present embodiment, the invention can be applied to the rear bumper to prevent the rear fender from being deformed.

(Effect of the Invention) As described above, according to the bumper device of the present invention, in the boundary portion between the upper and lower side portions, in the vehicle longitudinal direction relative to the upper side portion of the lower side portion. By allowing the movement of the lower side portion while allowing the deformation of only the upper side portion in the vehicle width direction, only the lower side portion is moved by the collision load. In the upper portion, only the side portion is bent and deformed in the vehicle width direction, and the load transmitted to the vehicle body panel is absorbed by this bending deformation. Therefore, it is possible to prevent the deformation of the vehicle body panel at the time of a light collision with a simple structure such as forming an allowance portion such as a slit on the bumper.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention, FIG. 1 is a perspective view of the slit periphery, FIG. 2 is a perspective view showing the front part of an automobile, and FIG. 3 is III- of FIG. It is sectional drawing which followed the III line. 1 …… Automobile 5 …… Bumper 6 …… Upper part 7 …… Main body part (lower part) 8,11 …… Front part (center part) 9,12 …… Side part 10 …… Front fender (body panel) 14 …… Slit (allowable part)

Claims (1)

(57) [Scope of utility model registration request] 1. An upper part and a lower part made of the same material, respectively, the upper part and the lower part being a center part extending in the vehicle width direction, and a side extending from the left and right ends of the center part in the vehicle front-rear direction. And a load receiving surface for receiving a collision load at the time of a vehicle collision, the lower side center portion is located outside the upper center portion in the vehicle front-rear direction, while the upper side portion is While the edges are butted against the vehicle body panel, the edges at the lower side are not butted against the vehicle body panel, and during a vehicle collision, the collision load acts only on the lower center portion. As a result, the lower side portion is moved relative to the upper side portion in the direction of the collision load, and only the upper side portion is deformed so as to absorb the collision load. , The upper side of the lower side A permitting portion is provided that permits relative movement in the vehicle front-rear direction with respect to the vehicle side portion, and permits deformation of only the upper side portion in the vehicle width direction as the lower side portion moves. Bumper device for automobiles.