JP2001138840A - Bumper disposition part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bumper disposition part structure capable of improving face rigidity of a bumper, preventing the bumper (especially a local high-rigidity flange part in the periphery of an opening for taking running wind) from abutting on internal equipment parts of a radiator or an air conditioner condenser even if the bumper body is deformed in the case of a light collision not exerting any influence on an occupant to protect the built-in parts. SOLUTION: A reinforcement 13 (or 13a, 13b) extending in the vertical direction of the car body is fitted to a portion (both side portions in the width direction) substantially central in the width direction on the back side (back 4a) of a bumper body 4 disposed in the front end part of the rear end part of the car body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bumper mounting structure at a front end or a rear end of a vehicle body such as an automobile.

[0002]

BACKGROUND OF THE INVENTION The front and rear ends of a motor vehicle are usually
2. Description of the Related Art Bumpers are provided mainly for the purpose of protecting internal fitting parts (built-in parts) such as a body body, a radiator and an air conditioner condenser, and functional parts such as lamps. FIG. 8 shows a conventional bumper (front bumper).
The bumper beam 23 is mounted on a side frame 22 constituting a front portion of the vehicle body, and the bumper 21 is disposed near the front of the bumper beam 23 and mounted on the side frame 22. Have been. In the vicinity of the rear of the bumper beam 23, internal fittings (not shown in FIG. 8) such as a radiator, an air conditioner condenser, and an air conditioner receiver dryer are arranged. A bumper beam 23 is interposed therebetween.

[0003]

Generally, a vehicle bumper such as a vehicle bumper 21 has a small thickness, that is, a depth W in the front-rear direction of the vehicle body (see FIG. 8) due to design requirements and the like, and is flat. In many cases, the rigidity of the bumper as a whole tends to be insufficient. Further, in the case of a vehicle having a short hood, the bumper 21 may not be used due to restrictions on parts layout or design.
Clearance between the air conditioner condenser and
The reality is that the clearance between the bumper 21 and the radiator cannot be sufficiently secured.

[0004] Further, as shown in FIG. 8, a flange 25 for forming a running air intake opening 24 of the bumper 21 is provided at a front portion of the condenser of the air conditioner. It is locally high. Therefore, when a slight collision force that does not affect the occupant acts on the bumper 21 having a large surface portion and low surface rigidity (for example, when the bumper 21 is hit against an obstacle during low-speed traveling such as when entering a garage), Despite the slight impact force, the bumper 21 is greatly deformed, and the locally rigid flange 25 hits internal fittings such as an air conditioner condenser and a radiator arranged at the rear of the bumper 21 and breaks them. There is a risk.

Therefore, conventionally, in order to eliminate such inconvenience, the bumper beam 23 is disposed between the bumper 21 and the air conditioner condenser, radiator or the like as described above (see FIG. 8). ), There is a problem that such a configuration increases the cost.

Further, in the case of a vehicle having a short hood or the like, the clearance between the bumper 21 and the air conditioner condenser,
In addition, there is a case where the clearance between the bumper 21 and the radiator cannot be sufficiently secured, so that the bumper beam 23 as described above cannot be provided.

The present invention has been made in view of the above circumstances, and an object of the present invention is to improve the surface rigidity of a bumper and to improve the bumper body in the event of a minor collision without affecting the occupant. Even if deformation occurs, it is possible to avoid bumpers (particularly the flange around the locally rigid air intake opening) from hitting internal fittings such as radiators and air conditioner condensers. An object of the present invention is to provide a bumper disposition portion structure having a configuration capable of protecting components.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, according to the present invention, a rear side of a bumper body disposed at a front end or a rear end of a vehicle body and substantially at the center in the vehicle width direction. At this point, a reinforcement that extends in the vertical direction of the vehicle body is attached. Further, in the present invention, a pair of reinforcements extending along the vehicle body vertical direction are provided on both sides in the vehicle width direction on the rear surface side of the bumper main body disposed at the front end portion or the rear end portion of the vehicle body. I am trying to install it. Further, in the present invention, the contact rib is provided on the bumper main body, and a bracket corresponding to the contact rib is provided on the vehicle body side so that the contact rib comes into contact with the bracket when the bumper main body is deformed. ing. Further, in the present invention, a projection is provided on the contact rib, and an opening corresponding to the projection is provided on the bracket, and the projection of the contact rib is inserted into the opening of the bracket when the bumper body is deformed. It is configured to prevent the displacement between the abutment rib and the bracket by a guide action at the time of insertion.

[0009]

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

FIG. 1 shows an automobile 1 provided with a bumper arrangement structure according to a first embodiment of the present invention. This automobile 1 has a short hood (front hood) 2 at the front. It is a model. A bumper (front bumper) 3 extending longitudinally along the vehicle width direction is provided below the hood 2 at the front of the vehicle 1.

As shown in FIG. 2, the above-mentioned bumper 3 is fitted and arranged in a bumper main body 4 made of synthetic resin and a traveling wind intake opening 5 provided substantially at the center of the bumper main body 4. And a bumper grill 6 made of synthetic resin. The clips 7 are assembled into, for example, three clip holding portions (not shown) integrally formed on the left and right side portions and the lower end center portion on the back side of the bumper body 4 (see FIG. 2). ), A plurality of (for example, three) clips 7 are click-engaged with the first cross member 8 at the front of the vehicle body, so that the bumper 3 is attached. As shown in FIG. 3, for example, three clips 7 are assembled at the upper edge of the rear surface of the bumper main body 4, and these clips 7 are click-engaged with the upper member 9 of the first cross member 8. The upper part of the bumper 3 may be attached by the following method. Thus, after the bumper 3 is temporarily attached to the first cross member 8 by the clip 7, predetermined portions of the lower portion and both side portions of the bumper 3 are permanently attached to the vehicle body by means such as bolting.

On the other hand, as shown in FIG. 2, a radiator 10 and an air conditioner condenser 11 are juxtaposed on the first cross member 8 at the front of the vehicle body, and a bumper is provided near the front of the radiator 10 and the air conditioner condenser 11. 3 are installed facing each other. No components such as a bumper beam are arranged between the bumper 3 and the radiator 10 and the air conditioner condenser 11.

Further, in the present embodiment, as shown in FIG. 2, a longitudinally extending portion is provided substantially at the center of the above-mentioned bumper 3 in the vehicle width direction (vehicle lateral direction) and on the back side of the bumper main body 4. The reinforcement 13 is attached by screwing or the like. Specifically, the longitudinal reinforcement 13 is disposed so as to extend in the vehicle up-down direction, and is attached to a substantially central portion of the bumper 3 in the left-right direction (longitudinal direction) by, for example, three screws 14. Thus, the lack of surface rigidity of the bumper 3 is compensated. Thus, the reinforcement 13 is reinforced so that the bumper 3 is not elastically bent, that is, the bumper 3 is not deformed rearward by a slight frontal impact that does not affect the occupant. . If an excessively small impact force acting from the front side of the bumper 3 toward the rear of the vehicle body, the reinforcement 1
The bumper 3 is deformed together with the bumper 3 and functions to absorb the impact force.

In this embodiment, FIGS.
As shown in FIG. 6, a contact rib 16 is integrally formed on the rear surface side of the bumper main body 4 and at a side portion of the traveling wind intake opening 5. This contact rib 16 is provided in FIGS.
As shown in FIG. 2, a projecting piece projecting substantially horizontally from the rear surface 4a of the bumper body 4 toward the rear of the vehicle body is formed integrally with a projecting portion 17 protruding toward the rear of the vehicle body. I have.

On the other hand, as shown in FIG. 2 and FIG.
Is provided. The bracket 18 is formed by bending a single steel plate, and as shown in FIG.
Mounting piece 18 which is attached to the vehicle by means such as bolting
a and a standing piece 18b bent upward from the mounting piece 18a. An opening 19 corresponding to the projection 17 of the abutment rib 16 is provided in the upper end edge portion of the standing piece 18 b of the bracket 18. Thus, when the bracket 18 is mounted on the first cross member 8 and the bumper 3 is mounted on the front part of the vehicle body, the projection 17 of the contact rib 16 has a height corresponding to the opening 19 of the bracket 18. Is located in the position. In this case, the tip portion of the projection 17 is slightly inserted into the opening 19 (fitting state), and the insertion portion of the tip of the projection 17 extends from the base of the projection 17 to the base. It is set so that there is an appropriate distance to (the root portion of the protrusion 17 on the back surface of the bumper body 4).

According to the structure of the mounting portion of the bumper 3 having such a configuration, for example, by using a clip mounting structure for mounting the trim for interior to the vehicle body side with a clip, the bumper 3 can be mounted in the bumper mounting process. Holding (temporary attachment or temporary fixing) can be performed easily, quickly, and reliably. In addition, the bumper body 4 is attached to the first cross member 8.
Is directly attached by the clip 7, so that the surface rigidity of the bumper body 4 can be increased.

Furthermore, since the reinforcement 13 extending vertically is attached (partly assembled) substantially at the center of the back surface 4a of the bumper body 4 in the left-right direction, the presence of the reinforcement 13 allows the bumper body to be mounted. 4 can increase the surface rigidity. Therefore, the effect of attaching the bumper main body 4 to the first cross member 8 by the clip 7 and the effect of attaching the reinforcement 13 to the substantially central portion of the bumper main body 4 in the left-right direction are combined to affect the occupant. The bumper 3 can be provided with surface rigidity to such an extent that no deformation is caused by a slight collision force without any deformation. For this reason, when the bumper 3 collides with the collision object slightly, the deformation of the bumper 3 can be prevented, and the collision object (counterpart) can be prevented from entering the inside of the vehicle body,
Therefore, it is possible to prevent the radiation fins (locations having low rigidity and most susceptible to damage) on the front of the radiator 10 and the air conditioner condenser 11 from being damaged, and to protect the internal fitting parts.

Further, a bracket 18 is provided on the vehicle body side, and a contact rib 16 is provided on the bumper 3.
Is disposed so as to face the bracket 18 in the front-rear direction of the vehicle body, so that in the event of a minor collision, the contact rib 16 hits the bracket 18 and the amount of deformation of the bumper 3 is suppressed to a small amount. That is, the bracket 18 functions as a stopper when the bumper 3 is deformed rearward of the vehicle body.
(Especially, a flange portion around the traveling wind intake opening 5 having high rigidity locally) can be prevented from hitting internal fitting parts such as the radiator 10 and the air conditioner condenser 11, and therefore, the internal fitting in the case of a minor collision can be prevented. Parts can be protected (prevention of damage).

Further, since the tip of the projection 17 of the abutment rib 16 is inserted into the opening 19 of the bracket 18 so as to be fitted, the bumper 3 is deformed toward the rear of the vehicle body. The projection 17 and the opening 19
Between the abutment rib 16 and the bracket 1
8 and the contact rib 16 without relative displacement.
Will surely contact the bracket 18. Therefore, the movement / deformation preventing action (stopper action) of the bumper 3 by the contact rib 16 and the bracket 18 can be reliably exerted.

At the time of a minor collision, the deformation of the bumper 3 is prevented or suppressed to a small amount as described above. However, an excessive impact force exceeding a certain value is applied to the bumper 3 from the front side of the vehicle to the rear side of the vehicle. When acted on, it functions to absorb this impact force. That is, since the reinforcement 13 is attached so as to extend in the vertical direction in the longitudinal direction, its reinforcement strength against impact force from the front of the vehicle body toward the rear of the vehicle body can receive the impact force of a slight collision. Since the strength is relatively low and the strength is relatively low, the bumper 3 is appropriately deformed when an excessive impact force acts to absorb the impact energy.

FIG. 7 shows a second embodiment of the present invention. In the present embodiment, two reinforcements 13a and 13b are used, and these reinforcements 13a and 13b are on the back side of the bumper main body 4 and are deviated left and right from the center of the bumper main body 4 respectively. In some parts, it is arranged so as to extend along the up-down direction and is attached to the back surface 4 a of the bumper main body 4. In addition, the above-mentioned reinforcement 13
Since a and 13b are arranged at positions deviated to the left and right sides from the traveling wind intake opening 5 of the bumper main body 4 and deviated from the traveling wind intake opening 5, the reinforcements 13 and 13b are provided.
The layout is such that a and 13b are not exposed to the outside through the traveling wind intake opening 5.

Thus, the two reinforcements 1
The same operation and effect as in the case of the above-described first embodiment can be obtained also in a case where the 3a and 13b are attached to the left and right sides of the bumper main body 4. In addition, according to the configuration of the second embodiment, the setting (adjustment) of the surface rigidity of the bumper main body 4 is further improved in accordance with the disposition positions of the two reinforcements 13a and 13b and their own strengths. It can be done easily and accurately.

Although not shown, also in the second embodiment, the displacement and deformation of the bumper 3 are prevented by providing the abutment rib 16 and the bracket 18 as in the case of the above-described first embodiment. Therefore, the internal equipment such as the radiator 10 and the air conditioner condenser 11 can be protected.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment.
Various modifications and changes are possible based on the technical concept of the present invention. For example, the arrangement positions of the abutment ribs 16 and the brackets 18 can be appropriately changed as needed, and the number of these arrangements is not limited to one, and may be two or more. Further, the contact rib 16 and the bracket 18
And the shapes of the projections 17 and the openings 19 can be appropriately changed. In the first and second embodiments described above, the structure of the arrangement portion of the front bumper 3 attached to the front end portion of the vehicle body has been described. However, the present invention relates to the arrangement of the rear bumper attached to the rear end portion of the vehicle body. It is needless to say that the present invention can be applied to the structure of the installation part.

[0025]

According to the first aspect of the present invention, there is provided a vehicle in a vehicle vertical direction on a rear surface side of a bumper body provided at a front end or a rear end of a vehicle body and substantially at a center in a vehicle width direction. Since the extended reinforcement is attached, the presence of this longitudinal reinforcement can improve the surface rigidity of the bumper main body and compensate for the lack of surface rigidity, so that there is no effect on the occupant. Surface rigidity can be ensured to such an extent that the bumper is not deformed at the time of a minor collision.
For this reason, in the event of a minor collision, a bumper (particularly, a flange portion around a locally rigid traveling wind intake opening) is installed on internal fittings such as a radiator and an air conditioner condenser that are arranged corresponding to the bumper. Can be prevented, thereby protecting these internal fittings. On the other hand, when an impact force larger than the slight acting force applied to the bumper at the time of a slight collision acts on the bumper, the longitudinal reinforcement extending in the vertical direction as described above has a relatively low strength. For this reason, the reinforcement causes deformation together with the bumper, and accordingly, it is possible to absorb excessive impact energy.

According to a second aspect of the present invention, there is provided a vehicle in which a bumper body disposed at a front end portion or a rear end portion of a vehicle body is disposed on both sides in the vehicle width direction on the back side and along the vehicle body vertical direction. Since a pair of reinforcements extending respectively are provided, the surface rigidity of the bumper can be improved and the internal fitting parts can be protected, and the bumper can be protected. The setting (adjustment) of the surface rigidity of the main body can be more easily and accurately performed in accordance with the arrangement positions of the two reinforcements and their own strengths.

According to a third aspect of the present invention, a contact rib is provided on the bumper body, and a bracket corresponding to the contact rib is provided on the vehicle body, and the contact rib comes into contact with the bracket when the bumper body is deformed. When the bumper is deformed in the event of a minor collision, the bumper deforms in the event of a slight collision. As a result, the amount of deformation of the bumper can be reliably suppressed to a small amount. Therefore, it is possible to prevent the collision object (counterpart) from entering the vehicle body and damaging the internal fitting parts, and to protect the internal fitting parts. Further, by providing the bumper main body with the contact rib, the surface rigidity of the bumper main body, which has a large number of flat portions and tends to have insufficient surface rigidity, can be improved.

According to a fourth aspect of the present invention, a projection is provided on the contact rib and an opening corresponding to the projection is provided on the bracket, so that the projection of the contact rib is opened when the bumper body is deformed. It is designed to prevent the displacement between the contact rib and the bracket by the guide action when inserted into the hole, so the contact action between the contact rib and the bracket when the bumper is deformed Can be reliably brought into contact with the bracket, and the function of improving the surface rigidity of the bumper and the function of protecting the internal fitting parts can be reliably exhibited as described above.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an automobile provided with a bumper mounting portion structure according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a structure of a front portion of the above-mentioned automobile, and showing a structure of a bumper disposition portion according to the first embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a structure for clipping a bumper to a first cross member.

FIG. 4 is an exploded perspective view showing a mounting state of a bracket on a vehicle body portion indicated by X in FIG. 2;

FIG. 5 is an enlarged sectional view taken along line AA in FIG. 4;

FIG. 6 is an enlarged sectional view taken along line BB in FIG. 4;

FIG. 7 is an exploded perspective view showing a bumper mounting portion structure according to a second embodiment of the present invention.

FIG. 8 is an exploded perspective view showing a conventional bumper arrangement portion structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automobile 3 Bumper (front bumper) 4 Bumper main body 4a Back surface 6 Bumper grill 7 Clip 8 First cross member 9 Upper member 10 Radiator 11 Air conditioner condenser 13 Reinforcement 13a, 13b Reinforcement 16 Resting rib 17 Projection 18 Bracket 19 Opening

Claims (4)

[Claims] 1. A reinforcement that extends in the up-down direction of the vehicle body is attached to the rear side of the bumper body disposed at the front end or the rear end of the vehicle body and substantially at the center in the vehicle width direction. Bumper installation part structure. 2. A vehicle according to claim 1, further comprising a bumper main body provided at a front end or a rear end of the vehicle body, on a rear surface side and at both sides in a vehicle width direction.
A bumper disposing portion structure, wherein a pair of reinforcements each extending along a vertical direction of a vehicle body are attached. 3. A structure in which a contact rib is provided on the bumper main body, a bracket corresponding to the contact rib is provided on the vehicle body side, and the contact rib is brought into contact with the bracket when the bumper main body is deformed. The bumper mounting part structure according to claim 1 or 2, wherein: 4. A projection is provided on the contact rib,
An opening corresponding to the projection is provided in the bracket, and the projection of the contact rib is inserted into the opening of the bracket when the bumper body is deformed. 4. The bumper arrangement part structure according to claim 3, wherein the displacement is prevented.