KR200157406Y1 - Bumper for a vehicle - Google Patents

Abstract

The present invention relates to a bumper for a vehicle that can be reduced in weight and manufacturing cost while improving impact resistance and resilience. The blower back beam (1a) and bumper are provided in a bumper for a vehicle installed before and after the vehicle to protect the body and passengers. The cover 1b is integrally injection molded, and the shock absorbing displacement space 2 is formed inside the integrated bumper 1, and the integrated bumper 1 is coupled to the bracket 3 and the fastening bolt 4. Is connected.

Description

Car bumpers

The present invention relates to a bumper that protects passengers and the vehicle body in the event of a collision or collision of the vehicle, and in particular, the rear beam and the bumper cover are integrally formed to form a sealed space, and a plurality of sealed spaces by the rear beam and the bumper cover are formed. A bumper partitioned by a diaphragm rib, the bumper for a vehicle forming a diaphragm rib which prevents buckling of these diaphragm ribs, and a restoring force is improved and breakage and deformation of a bumper are suppressed.

Generally, a bumper for a vehicle, for example, a bumper mounted on a passenger car, is installed at the front and rear of the vehicle to absorb a shock when applied from the outside to protect the body and the passenger, and thus the conventional structure of the bumper serving as this Referring to Figure 4, as the inner surface of the bumper cover 102, a buffer member such as the shock absorber 103 and the rear beam 101, such as the impact beam 108 are sequentially installed, the bumper cover ( 102 is a structure in which the shock absorbing agent 103 is built in the space sealed by the impact beam 108, the impact bracket 108 is provided with an auxiliary bracket 105 via a fastening means such as a bolt It is fixed to 104, and the impact bracket 104 is fixed to the vehicle body.

Therefore, when a collision or a collision accident occurs, an external force is applied in a bumper cover 102 → an impact absorbent 103 → an impact beam 108 → an auxiliary bracket 105 and an impact bracket 104 → a body. The shock applied suddenly by the absorbent 103 is absorbed, and the buffered external force is supported by the impact beam 108 and the impact bracket 104.

However, in the conventional bumper according to the first embodiment, the components 102, 103, and 108 constituting the bumper are separately provided so that the components 102, 103, and 108 may be manufactured to manufacture one bumper. After separately manufacturing, since the components (102, 103, 108) must be assembled with each other, the number of labor for manufacturing the bumper is increased, the productivity is lowered, the production cost is increased.

Meanwhile, referring to FIG. 5, a second embodiment of the conventional bumper is illustrated. According to this, a rear beam 101 having a closed space formed with a displacement space 107 by the bent portion 106 is formed of a bumper cover ( 102, the rear beam 101 is fixed to the impact bracket 104 and the auxiliary bracket 105 fixed to the vehicle body via a fastening means such as a bolt.

Therefore, when a collision or collision occurs, an external force is applied in the order of bumper cover 102 → rear beam 101 → auxiliary bracket 105 and impact bracket 104 → bodywork. When delivered, the rear beam 101 is depressed and the air inside the sealed space is compressed to absorb some of the impact that is suddenly applied, and the buffered external force is supported by the impact bracket 104.

However, the conventional bumper according to the second embodiment has an advantage in that the number of parts is reduced as compared with the first embodiment shown in FIG. 3, but the shock absorbing only by the rear beam 101 to absorb the shock by the compressive force of air. Although not enough, excessive deformation is prevented by the bent portion 106, but a problem arises in that the bumper is not easily broken, particularly the bent portion 106 of the rear beam 101.

6 shows a third embodiment of the conventional bumper, whereby the rear beam 1a and the bumper cover 1b are integrally formed by the rear beam 1a and the bumper cover 1b. The enclosed space 2 is formed, and is fixed to the auxiliary bracket 8 and the impact bracket 3 via a fastening member such as the bolt 4.

Such a bumper has an advantage that the structure is very simple and easy to manufacture, and the cost of the product is low. However, such a bumper has a problem in that its strength is so low that the buffer function is insufficient, and even a small external force is easily broken.

In order to solve this problem, a foaming agent is injected into the sealed space 2 of the bumper shown in FIG. 6 to form a urethane foam (not shown) as a shock absorber in the sealed space 2 by the bumper cover 1b and the rear beam 1a. As shown in FIG. 7, the sealed space 2 is partitioned by a plurality of diaphragm ribs 5b.

In the case of the bumper according to the seventh embodiment shown in FIG. 7, when a collision or a collision accident occurs, an accidental force is suddenly transmitted to the rear beam 1a through the diaphragm rib 5b, where the diaphragm rib ( 5b) is elastically refracted and primarily absorbs the shock, and the air inside the sealed space 2 is compressed and secondarily absorbs the shock, thereby improving the cushioning function. In addition, the diaphragm rib 5b improves the restoring force while preventing the bumper cover 1b from being excessively pushed toward the rear beam 1a, thereby preventing breakage and deformation of the bumper.

However, in the conventional bumper according to the fourth embodiment, even if its own strength and restoring force is improved by the diaphragm rib 5b, the diaphragm rib 5b is buckled and the restoring force and supporting force are lost when an external force is greatly applied. The bumper commer 1b is broken or the buffer function is lost.

The present invention is devised to solve the above problems, the rear beam and the bumper cover is integrally formed to form a sealed space, the sealed space by the rear beam and the bumper cover is partitioned by a plurality of diaphragm ribs In a bumper, an object of the present invention is to provide a bumper for a vehicle in which a septum rib which prevents buckling of these diaphragm ribs is reinforced, so that a restoring force is improved and damage and deformation of the bumper are suppressed.

1 is a plan view cut away a portion of a vehicle bumper according to the present invention,

FIG. 2 is a cross-sectional view taken along line II of FIG. 1 and illustrates a first embodiment of a vehicle bumper according to the present invention; FIG.

3 is a diagram corresponding to FIG. 2, illustrating a second embodiment of a vehicle bumper according to the present invention;

4 to 7 are diagrams corresponding to FIG. 2 and show first, second, third, and fourth embodiments of a conventional vehicle bumper, respectively.

* Explanation of symbols for main parts of the drawings

1: Bumper 1a: Rear Beam

1b: bumper cover 2: airtight space

3: impact bracket 4: bolt

5a: Diaphragm rib 5b: Diaphragm rib

6: Lamp mounting groove 8: Auxiliary bracket

The present invention for achieving the above object, in the bumper in which the rear beam and the bumper cover is integrally formed to form a sealed space, the sealed space by the rear beam and the bumper cover is partitioned by a plurality of diaphragm ribs, The diaphragm rib is reinforced inside the sealed space to prevent buckling of the diaphragm rib.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view showing a portion of a vehicle bumper according to the present invention, and FIG. 2 is a cross-sectional view taken along line II of FIG. 1, showing a first embodiment of the vehicle bumper according to the present invention, and FIG. As a corresponding diagram, a second embodiment of a vehicle bumper according to the present invention is shown. According to this, the rear beam 1a and the bumper cover 1b are integrally formed so that the sealed space 2 is formed. And the sealed space 2 by the rear beam 1a and the bumper cover 1b is partitioned by a plurality of diaphragm ribs 5b, and the inside of the sealed space 2 is prevented from buckling of the diaphragm ribs 5b. The diaphragm rib 5a is reinforced, and is fixed to the auxiliary bracket 8 and the impact bracket 3 via the bolt 4.

The diaphragm rib 5a may be variously modified according to the shape of the diaphragm rib 5b. For example, as shown in FIG. 2, the diaphragm rib 5a intersects with the diaphragm rib 5b at 90 degrees to form a positive shape. Or form T, as shown in FIG. 3.

Therefore, when a collision or a collision accident occurs, the bumper cover 1b is pushed toward the rear beam 1a and an external force is transmitted to the rear beam 1a through the diaphragm rib 5b, where the diaphragm rib 5b is elastically Refracted and primarily absorb shock, but excessive deflection of the diaphragm rib (5b) is suppressed by the septum rib (5a), while the air inside the sealed space (2) is compressed and absorbs the shock secondary . In addition, since the diaphragm rib 5b is supported by the diaphragm rib 5a, the restoring force and the supporting force are improved to prevent breakage and deformation of the bumper.

On the other hand, as shown in FIG. 1, if the lamp mounting groove 6 for mounting a lamp such as a fog lamp is formed on the bumper, there is an advantage that the mounting of the lamp is convenient.

As described above, according to the present invention, in the bumper in which the rear beam and the bumper cover are integrally formed, and the closed space formed by the rear beam and the bumper cover is partitioned by a plurality of diaphragm ribs, a species for preventing buckling of the diaphragm ribs. The diaphragm rib is reinforced, the damage of the bumper is suppressed by the improvement of the restoring force, and the shock absorbing function is sufficiently performed by the improvement of its own strength.

Claims (1)

(Primary correction) The rear beam 1a and the bumper cover 1b are integrally molded so that the sealed space 2 is formed, and the plurality of the sealed spaces 2 by the rear beam 1a and the bumper cover 1b are many. A bumper partitioned by a diaphragm rib (5b) in which a diaphragm rib (5a) is beamed inside a sealed space (2) to prevent buckling of the diaphragm rib (5b).