JP2540643Y2 - Car bumper support structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bumper support structure for an automobile, and more particularly to a bumper face having a U-shaped cross section fixed to a main beam and an upper beam supported on a body frame, respectively. The present invention relates to a bumper support structure for an automobile in which an upper edge of a face faces a lower edge of a body.

[0002]

2. Description of the Related Art A structure in which a front bumper or a rear bumper of a vehicle formed of a synthetic resin in a U-shape in cross section is supported on a vehicle body frame. Is connected to a vehicle body frame via a cushion rubber (see Japanese Utility Model Laid-Open No. 59-75350).

[0003]

A gap extending in the width direction of the vehicle body is formed between the upper edge of the bumper face supported on the body frame and the lower edge of the body. If it is not kept uniform over the entire area, there is a problem that the appearance is impaired.

[0004] However, in the conventional bumper support structure, no consideration has been given to keeping the gap between the upper edge of the bumper face and the lower edge of the body constant. Without fine adjustment, the width of the gap may be non-uniform.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bumper support structure for an automobile which can maintain a uniform gap with a body when the bumper face is mounted.

[0006]

In order to achieve the above object, the present invention provides a main beam and an upper beam which are vertically supported on a vehicle body frame and a lower portion of a bumper face having a U-shaped cross section. Fix the upper part respectively,
A vehicle bumper support structure having an upper part of a bumper face facing a lower part of a body, wherein the upper
The arm is inserted into a vertically long hole formed in the body frame.
Bolts that penetrate the upper beam and pass through the long holes
Is tightened with a nut screwed to the bolt, by the main beam and the upper beam is connected via a resilient member, for urging the upper beam by the elastic force of the the elastic member upward, the The upper part of the bumper face is at the lower part of the body, the upper edge of the bumper face and the lower edge of the body.
A first feature is that the pressure contact is made via a spacer for setting a constant gap between them.

[0007] The present invention provides, in addition to the first feature described above,
A second feature is that the elastic member is made of a strip-shaped resin member, and the upper end and the lower end are respectively connected to the upper beam and the main beam in a state where the central portion is curved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of the present invention. FIG. 1 is an overall perspective view of an automobile, FIG. 2 is a sectional view taken along line 2-2 of FIG. 1, and FIG. 3 is a main beam and an upper beam. FIG. 4 is an exploded view corresponding to FIG.

FIG. 2 shows a cross section of a rear bumper B of the automobile V shown in FIG. 1. The rear bumper B mainly includes a main beam 1, an upper beam 2, a bumper face 3, a cushioning member 4, and an elastic member. It is composed of each member of the member 5.

As is apparent from FIG.
The main beam 1 is a box-shaped strength member disposed in the left and right direction at the rear of the vehicle body. A pair of left and right mounting brackets 6 projecting forward from the front end surface of the main beam 1 8 and a welding nut 9 for support. The upper beam 2 is a U-shaped member disposed in parallel with the upper portion of the main beam 1 and has four U-shaped members fixed to the front wall of the beam 2 so as to face the front of the vehicle body. Welding bolts 10 and screwed to them
That by the four nuts 11 are fastened to the vertical direction of the long hole 12 ₁ formed in the body frame 12.

A bumper face 3 having a U-shaped cross section is integrally formed of synthetic resin so as to cover the main beam 1 and the upper beam 2, and a pair of right and left brackets projecting from the lower surface of the main beam 1 below the lower portion. 13, while being fixed with a tapping screw 14, the upper part is superimposed on the upper surface of the upper beam 2,
It is fastened by a welding nut 15 fixed to the inner surface of the upper beam 2 and a bolt 16. And the main beam 1
Between the rear surface and the inner surface of the bumper face 3, a buffer member 4 made of a soft synthetic resin supported along the main beam 1 is arranged, and the shock of the collision is absorbed by the elastic deformation of the buffer member 4. Incidentally, a resin clip can be used in place of the tapping screw 14, the welding nut 15 and the bolt 16.

As is apparent from FIG. 3, the main beam 1
The two brackets 17 protruding from the upper surface of the pair and the two brackets 18 protruding downward from the upper beam 2 are connected by a pair of left and right elastic members 5. The elastic member 5 is made of a synthetic resin in the shape of a strip. The lower end of the elastic member 5 is fixed to the bracket 17 of the main beam 1 with a bolt 19 and a welding nut 20, and the upper end of the elastic member 5 is fixed to the bracket 18 of the upper beam 2. 21 and a welding nut 22. The elastic member 5 has a central portion in the longitudinal direction slightly curved toward the rear side of the vehicle body in the free state (see FIG. 4), and in the mounted state, is compressed in the up and down direction to bend more than in the free state. Thus the elastic restoring force of the elastic member 5 in the mounting state, the main beam 1 through the projection 5 _1, 5 ₂ projecting from the upper and lower portions of the rear face
Is transmitted to the upper beam 2 and acts to push the upper beam 2 upward with respect to the main beam 1.

The body 2 located above the rear bumper B
Rubber spacers 24 are mounted at predetermined intervals on the lower edge of 3. By contacting the upper edge of the bumper face 3 with the spacer 24, a constant gap δ is formed between the lower edge of the body 23 and the upper edge of the bumper face 3.

Next, a rear bumper B having the above-described structure is provided.
Will be described mainly with reference to FIG.

Prior to assembling the bumper face 3, the main beam 1 with the cushioning member 4 attached to the rear surface is fixed to the body frame 7 via the bracket 6,
A spacer 24 is mounted on the side in advance. On the other hand, on the bumper face 3 side, an upper beam 2 in which a pair of elastic members 5 are fixed to a bracket 18 in advance with bolts 21 and welding nuts 22 is fixed with bolts 16 and welding nuts 15.

Subsequently, the bumper face 3 is put on the main beam 1 from behind, and the lower part thereof is
At 4, the main beam 1 is fixed to the bracket 13. At this time, passed through the long hole 12 ₁ of the welding bolt 10 is formed on the body frame 12 which protrudes from the upper beam 2 in front, temporarily tightened loosely with a nut 11. When the lower ends of the pair of elastic members 5 are fixed to the bracket 17 on the upper surface of the main beam 1 with the bolts 19 and the welding nuts 20 from this state, the elastic members 5 are contracted vertically and bent rearward. At this time, since the main beam 1 is firmly fixed to the body frame 7, the upper beam 2 is pushed upward by the elastic restoring force of the elastic member 5. As a result, the upper portion of the bumper face 3 integrally fixed to the upper beam 2 is also pushed upward, and presses against the lower surface of the spacer 24 mounted on the body 23. Accordingly, the welding bolt 1 through the elongated hole 12 ₁ of the body frame 12 from the state
If the upper beam 2 is fixed by screwing the nut 11 into the upper portion 0, the gap δ between the lower edge of the body 23 and the upper edge of the bumper face 3 has a certain size determined by the thickness of the spacer 24. And the appearance of the rear bumper B is improved.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and may be variously modified without departing from the present invention described in the claims for utility model registration. It is possible to make design changes.

For example, in the embodiment, the upper part of the bumper face 3 is indirectly connected to the body 2 via a rubber spacer 24.
3, the rubber spacer 24
Is not essential, and the bumper face 3 may be directly pressed against the body 23. In this case, the spacer can be integrally formed on the bumper face 3 side or the body 23 side. Further, the elastic member 5 is not limited to a synthetic resin, but may be a metal. The present invention is also applicable to a front bumper of an automobile.

[0020]

As described above, according to the first feature of the present invention, the upper beam is formed on the body frame by the upper and lower parts.
Through the upper beam and into the long hole
Bolts and nuts screwed to the bolts
The upper beam is urged upward by the elastic force of the elastic member connecting the main beam and the upper beam, so that the upper part of the bumper face fixed to the upper beam is located at the lower part of the body , and the upper edge of the bumper face is And bo
Through a spacer to set a certain gap between the lower edges
Since the are pressed in, A by tightening of the bolt
When tightening the upper beam to the body frame,
The gap between the upper edge of the body face and the lower edge of the body is always constant
And therefore the bumper face combination
Even after attaching, the upper edge of the bumper face and the lower edge of the body
A constant gap is always accurately formed between the bumper
The appearance of the vehicle body can be improved. Moreover,
When setting the clearance, make sure that the
The surface fixing means itself is specially manufactured and processed with high precision.
Does not need to be
Wear.

According to the second feature of the present invention, since the elastic member is formed of a strip-shaped resin member, the elastic member is extremely lightweight and low-cost, and can be easily mounted.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of an automobile.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is an exploded perspective view showing a combined state of a main beam and an upper beam.

FIG. 4 is an exploded view corresponding to FIG. 2;

[Explanation of symbols]

1 ... Main beam 2 ... Upper beam 3 ... Bumper face 5 ... Elastic member 7 ... Body frame 10 ... Bolt 11 ... Nut 12 Body frame 12 ₁ Slot 23 Body 24 Spacer

Claims (2)

(57) [Scope of request for utility model registration] 1. A vertical interval on a body frame (7, 12).
The support at the the main beam (1) and the upper beam (2), bumper face having a U-shaped cross-section (3)
The lower and upper are fixed respectively, the top of the bumper face (3) a bumper support structure of a motor vehicle comprising to face the lower portion of the body (23), said Appabi
Arm (2) is formed on the upper and lower
Penetrates the upper beam (2) into the long hole (12 ₁ )
And a bolt (10) inserted into the elongated hole (12 ₁ ) and
Tighten with nut (11) screwed into bolt (10)
The main beam (1) and the upper beam (2) are connected via an elastic member (5), and the upper beam (2) is urged upward by the elastic force of the elastic member (5). As a result , the upper part of the bumper face (3) is
At the bottom of 3), the upper edge of the bumper face (3) and the body
(23) A switch for setting a constant gap (δ) between the lower edges.
A bumper support structure for an automobile, wherein the bumper support structure is pressed through a pacer (24) . 2. The elastic member (5) is formed of a strip-shaped resin member, and the upper end and the lower end are coupled to the upper beam (2) and the main beam (1), respectively, in a state where the central portion is curved. The vehicle bumper support structure according to claim 1, characterized in that: