JPH0641896Y2 - Vehicle bumper mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a structure of a bumper mounting portion of a vehicle.

(Prior Art) Conventionally, when a rear side bumper is attached to a vehicle body, a vehicle configured to insert and fix a bumper arm projecting on the back side of the bumper into a rear floor side member of the vehicle body has been used, for example, in actual deployment. Sho 63-8145, Shokai Sho 6
It is disclosed in Japanese Patent Laid-Open No. 3-119150.

Usually, in such a vehicle, as shown in FIG. 6, two rear hat side rear floor side members 3 having an inverted hat shape in cross section along the vehicle front-rear direction are provided in both side regions of the rear lower surface of the floor panel 2 of the vehicle body 1. (Only one side is shown in the figure). On the other hand, the bumper 4 is provided with a bumper reinforcement 5 on the back side thereof along the vehicle width direction, and as shown in FIG. 7, the bumper reinforcement 5 has two rear floor sides. Two bumper arms 6 (only one side is shown in the figure) are provided so as to project corresponding to the member 3.

Then, the bumper arms 6 are respectively inserted into the rear floor side members 3 from the rear end openings, and are fixed to the bottom walls by the fasteners 7, 7. Thus, the bumper 4 is attached to the vehicle body 1.

(Problems to be Solved by the Invention) By the way, in recent years, there is a vehicle configured to illuminate the license plate when driving at night by disposing a lighting device in the peripheral portion of the license plate mounting region of the bumper 4.
To assemble the bumper in such a vehicle, first, as shown in the phantom line in FIG. 8, work the central portion of the bumper 4 while locking the tips of the bumper arms 6 to the rear end bottom surfaces of the rear floor side members 3, respectively. The person himself or herself supports the work space a between the back side of the bumper 4 and the vehicle body 1 (hereinafter referred to as “temporary state of bumper”), and then the work space a is used. Bumper 4
After the harness on the side of the vehicle and the harness on the side of the vehicle body 1 are connected, the bumper 4 is pushed all the way into the side of the vehicle body 1 and fixed as described above.

However, in the conventional structure of the bumper mounting portion, if the longitudinal dimension of the bumper arm 6 is set to be long so as to secure a sufficient working space a in the temporary bumper mounting state,
When the bumper arm 6 is fully fixed, the region of high rigidity constituted by the overlapping portion of the rear floor side member 3 and the bumper arm 6 becomes longer than necessary, and the amount of crash of the rear floor side member 3 at the time of a vehicle collision is correspondingly increased. With the decrease, the deformation mode gets worse,
The problem arises that the sufficient absorption of collision energy is hindered.

On the contrary, if the longitudinal dimension of the bumper arm 6 is set to be short in order to ensure sufficient absorption of collision energy, the bumper arm 6 and the rear floor side member 3 are temporarily placed in a state where the tip of the bumper arm 6 is locked to the rear floor side member 3. The working space a between the body 1 and the body 1 becomes small, which makes it difficult to connect the harness.

(Object of the Invention) This invention solves the above-mentioned problems of the prior art, and secures a sufficient amount of energy to be absorbed at the time of a vehicle collision, while ensuring a sufficient working space in a temporary bumper mounting state. It is intended to provide the structure of.

(Means for Solving the Problem) The present invention provides a bumper arm projecting on the rear surface side of a bumper in a side member having a substantially U-shaped cross section disposed along the vehicle front-rear direction. In order to achieve the above object, the vehicle is inserted and fixed from the end opening,
A substantially inverted L-shaped flange having a horizontal piece for temporarily mounting a bumper that can be mounted on the bottom surface of the end of the side member is connected to the tip of the bumper arm at the lower end of the vertical piece.

(Embodiment) FIG. 1 is an exploded perspective view showing a structure of a bumper mounting portion of a vehicle which is an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. A vehicle to which the structure of the bumper mounting portion is applied is equipped with a lighting device (not shown) for illuminating the license plate 10 on the rear bumper 14 of the vehicle.

As shown in both figures, rear floor side members 13, 13 are attached to the floor panel 12 of the vehicle body 11 in both side regions on the lower surface side thereof along the vehicle front-rear direction. As shown in FIG. 3, the rear floor side members 13 and 13 are finished in an inverted hat shape in cross section, and both lip pieces are fixed to the lower surface of the floor panel 12, respectively.

On the other hand, a bumper reinforcement 15 is attached to the rear side of the rear bumper 14 along the vehicle width direction. further,
Two bumper arms 16 and 16 are attached to the bumper reinforcement 15 in correspondence with the two rear floor side members 13 and 13, respectively, with their tips extending in the in-vehicle direction. The bumper arms 16 and 16 have a U-shaped cross section as shown in FIG.
An inverted L-shaped flange 20 is provided continuously at the tip of the bottom piece and extends vertically upward and then horizontally toward the inside of the vehicle.

Assembling the bumper 14 thus configured to the vehicle body 11 is as follows, as shown in the imaginary line in FIG. 2 and in FIG.
The horizontal pieces 21 of the flange 20 at the tips of the bumper arms 16 and 16 are mounted on the upper surfaces of the bottom pieces at the rear ends of the rear floor side members 13 and 13, respectively, and the center portion of the bumper 14 is supported by the operator himself. Rear side and vehicle body
A working space c is secured between 11 and 11 (hereinafter referred to as “temporary state of bumper”). In this case, the vertical piece 22 of the flange 20
Is secured to the rear end surface of the bottom piece of the rear floor side members 13, 13 to position the bumper 14 in the front-rear direction.

Next, using the working space c, the harness pulled out from the lighting device of the bumper 14 is connected to the harness provided on the vehicle body 11 side.

When the wiring work is completed, the bumper arms 16 and 16 are respectively inserted into the rear floor side members 13 and 13 from the rear by lifting the bumper 14 upward so that the bumper arm 1
The lower surfaces of 6, 16 are fixed on the bottom surfaces of the rear floor side members 13, 13 by fasteners 17, 17, respectively. Thus, the bumper 14 is attached to the vehicle body 11.

As described above, since the inverted L-shaped flange 20 for temporary placement of the bumper is provided at the tip of the bumper arm 16, the temporary placement of the bumper 14 can be performed by mounting the inverted L-shaped flange 20 on the rear floor side member 13. In other words, it is not necessary to mount the tip of the bumper arm 16 on the rear floor side member 13, so that the working space c can be sufficiently secured while the length of the bumper arm 16 is set shorter than before. Further, as a result of shortening the bumper arm 16, the size of the overlapping portion of the rear floor side member 13 and the bumper arm 16 is also shortened, and a sufficient amount of crash of the rear floor side member 13 at the time of a vehicle collision is secured and a good deformation mode is guaranteed. Then, the collision energy is sufficiently absorbed. When the bumper 14 is permanently fixed to the vehicle body 11, the flange 20 does not contact the rear floor side member 13, so that the flange 20 does not increase the rigidity of the rear floor side member 13.

(Effect of the Invention) As described above, according to the structure of the bumper mounting portion of the vehicle of the present invention, since the bumper arm has a substantially inverted L-shaped flange for temporary placement of the bumper at the tip of the bumper arm, energy absorption during a vehicle collision is achieved. It is possible to obtain an effect that it is possible to secure a sufficient working space in a temporary state of the bumper while securing a sufficient amount.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a structure of a bumper mounting portion of a vehicle which is an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is applied to the above structure. FIG. 4 is a sectional view of the rear floor side member, FIG. 4 is a perspective view showing a bumper arm similarly applied to the above structure, FIG. 5 is a sectional view for explaining a bumper temporary placement state in this embodiment, and FIG. Sectional drawing which shows the structure of the bumper attachment part of a vehicle, FIG. 7 is a perspective view which shows the bumper arm applied to the structure, FIG.
The figure is an enlarged cross-sectional view of the main part of FIG. 11 ... Vehicle body, 13 ... Rear floor side member, 14 ... Bumper, 16 ... Bumper arm, 20 ... Flange, 21 ... Horizontal piece, 22 ... Vertical piece

Claims (1)

[Scope of utility model registration request] 1. A bumper arm projecting from a rear surface of a bumper is inserted and fixed in an end opening of the side member in a side member having a substantially U-shaped cross section disposed along a vehicle front-rear direction. In the vehicle, a vertical inverted lower end of a substantially inverted L-shaped flange having a horizontal piece for temporarily placing a bumper that can be mounted on an end bottom surface of the side member is connected to a tip of the bumper arm. Bumper mounting structure.