JP2005119357A - Bumper structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bumper structure which can absorb and soften an impact load so that parts attached to automobile body may not be damaged by the deformation of the bumper skin at the time of a collision, and at the same time, can improve the external appearance of the vehicle. <P>SOLUTION: A rib 13 which extends to the automobile body 2 side is formed on the bumper skin 9, and at the same time, a recess 14 in which the rib 13 is inserted is formed on a bracket 10 for fixing the bumper skin. The recess 14 has top and bottom confronted surface sections 15 and 15' which join the vehicle body mounting part side surfaces of the inserted rib 13, and at the same time, guides the rib 13 in a direction of separation from the vehicle body mounting part (e.g., a headlight 8) when an impact load in the longitudinal direction of the automobile body is applied to the bumper skin 9. Thus, when the impact load from the longitudinal direction of the automobile body is applied to the bumper skin 9, the rib 13 is guided to the direction of separation from the vehicle body mounting part by the top and bottom confronted surface sections 15 and 15'. Therefore, the bumper skin 9 is moved and deformed in the direction of separation from the vehicle body mounting part as well, and the impact load is absorbed and softened. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a bumper structure.

As shown in FIG. 6, generally, the bumpers 1 and 1 ′ are attached to the front and rear end portions of the vehicle body body 2, and absorb the impact at the time of collision to protect the vehicle body body 2. It also serves as a decoration.
Conventionally, as shown in FIG. 7, such a bumper 1, 1 ′ is disposed on the front side of the bumper beam 3 that joins and strengthens the end of the frame of the vehicle body, and absorbs the impact at the time of collision. A buffer material 4 and a bumper skin 5 made of synthetic resin that covers the bumper beam 3 and the buffer material 4 are provided. The bumper beam 3 and the cushioning material 4 are attached to the vehicle body 2 via a bumper stay (not shown), and the bumper skin 5 is attached to a concave fitting portion 7 formed on a bumper skin fixing bracket (hereinafter referred to as a bracket) 6. The bumper skin 5 is attached to the vehicle body 2 by fitting and holding the upper part of the vehicle body 2. However, in FIG. 7, the bumper structure of the bumper 1 attached to the front end portion of the vehicle body 2 is shown. However, the bumper 1 ′ is also located behind the vehicle body 2 in the same manner as the bumper 1. It is attached to the end.

  However, in such a conventional bumper structure, as shown in FIG. 7, the bracket 6 may be disposed in the vicinity of a vehicle body mounting component such as a headlamp 8 in design of the vehicle body. For this reason, the impact load from the front-rear direction of the vehicle body acts on the bumper 1 (or 1 '), and the upper part of the bumper skin 5 bulges upward as shown by the two-dot chain line in FIG. If the headlamp 8 is deformed, the headlamp 8 may be pushed up from the lower side to damage the headlamp 8.

In order to solve such a problem, it is conceivable to prevent the headlamp 8 from being damaged due to the deformation of the bumper skin 5 by adopting a reinforced type in which the strength of the headlamp 8 is higher than that of a general type. . However, the reinforced type headlamp 8 has a problem that the manufacturing cost is higher than that of the general type.
In addition, it is conceivable to dispose the bracket 6 and the headlamp 8 apart from each other. In such a case, however, the dividing gap between the bumper skin 5 and the headlamp 8 becomes conspicuous, and the vehicle appearance is reduced. The problem of being inferior will occur.
Japanese Patent Laid-Open No. 7-17341

  Therefore, the present invention has been made to solve the problems of the conventional bumper structure as described above, and the vehicle body mounting component is not damaged by the deformation of the bumper skin at the time of collision. Thus, an object of the present invention is to provide a bumper structure capable of absorbing and mitigating an impact load and improving the appearance of the vehicle.

The invention according to claim 1 is a bumper structure in which the bumper skin is attached to the vehicle body body via a bumper skin fixing bracket disposed in proximity to the vehicle body attachment component.
While forming a rib extending toward the vehicle body side on the bumper skin, forming a recess into which the rib is inserted into the bracket, the recess is joined to a body part mounting side surface of the inserted rib, When the impact load from the front-rear direction of the vehicle body acts on the bumper skin, it has a vertically opposed surface portion that guides the rib in a direction away from the vehicle body mounting component.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the concave portion is configured so that the rib is inclined downward when an impact load from the front-rear direction of the vehicle body acts on the bumper skin. It has a butting part to move backward.

  According to a third aspect of the invention, in addition to the structure of the first aspect of the invention, the recess prevents the rib from moving backward when an impact load from the front-rear direction of the vehicle body acts on the bumper skin. And a second abutting portion that curves and deforms the rib toward the lower side.

  According to the first aspect of the present invention, the bumper skin is formed with the rib extending toward the vehicle body, and the rib is inserted into the recess formed in the bracket for fixing the bumper skin. . The concave portion is joined to the side surface of the vehicle body mounting component of the inserted rib, and has an upper and lower opposing surface portion that guides the rib in a direction to detach from the vehicle body mounting component when an impact load from the front-rear direction of the vehicle body acts on the bumper skin. ing. As a result, when an impact load from the front-rear direction of the vehicle body acts on the bumper skin, the ribs are guided in the direction away from the vehicle body mounting parts by the upper and lower opposing surface portions, so that the bumper skin moves in the direction away from the vehicle body mounting parts. Move and deform to absorb and relieve impact loads. Therefore, even if the bracket for fixing the bumper skin and the vehicle body mounting parts are arranged close to each other, the bumper skin that has been deformed by receiving an impact load is less likely to interfere with the vehicle body mounting parts, and the impact load is reliably absorbed and mitigated. Therefore, it is possible to prevent the vehicle body mounting parts from being damaged. For this reason, it is not necessary to reinforce the material of the vehicle body mounting part, and the manufacturing cost can be reduced. In addition, the division gap between the bumper skin and the vehicle body mounting part can be made less conspicuous, and the appearance of the vehicle appearance can be further improved.

  According to the invention described in claim 2, in addition to the configuration of the invention described in claim 1, the recess moves backward with the rib obliquely downward when an impact load from the front-rear direction of the vehicle body acts on the bumper skin. It has an abutting part to be made. Thus, in addition to the function and effect of the first aspect of the invention, when an impact load from the front-rear direction of the vehicle body acts on the bumper skin, the rib moves backward obliquely downward by the abutment portion. The bumper skin that has been deformed under load moves and deforms diagonally downward to absorb and relieve the impact load. Therefore, the bumper skin that has been deformed by receiving an impact load is less likely to interfere with the vehicle body mounting parts arranged close to the upper side of the bracket, and also absorbs and relaxes the impact load reliably. It is possible to prevent damage to the vehicle body mounting parts arranged close to each other.

  According to the invention described in claim 3, in addition to the configuration of the invention described in claim 1, the concave portion prevents the rib from moving backward when an impact load from the front-rear direction of the vehicle body acts on the bumper skin. And a second abutting portion for bending and deforming the rib toward the lower side. Thus, in addition to the function and effect of the first aspect of the invention, when an impact load from the front-rear direction of the vehicle body acts on the bumper skin, the second abutting portion prevents the rib from moving backward and Since it is curved and deformed toward the side, the bumper skin deformed by receiving the impact load moves and deforms downward, and absorbs and relaxes the impact load. Therefore, the bumper skin that has been deformed by receiving an impact load is less likely to interfere with the vehicle body mounting parts arranged close to the upper side of the bracket, and also absorbs and relaxes the impact load reliably. It is possible to prevent damage to the vehicle body mounting parts arranged close to each other.

  As a result, there is provided a bumper structure capable of absorbing and mitigating an impact load and improving the appearance of the vehicle so that the vehicle body mounting parts are not damaged by the deformation of the bumper skin at the time of collision. be able to.

  By guiding the bumper skin on which the impact load from the front-rear direction of the vehicle body was applied to the vehicle body component parts arranged close to the bracket, it was possible to prevent damage to the vehicle body mounting parts.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side sectional view showing a bumper structure according to the present embodiment, and FIG. 2 is a side sectional view showing a deformation state of a bumper skin in the example. In addition, the same code | symbol is attached | subjected about the structural member substantially the same as a prior art example.

  First, the bumper structure will be described. This bumper structure is applied to the bumpers 1 and 1 ′ disposed at the front and rear ends of the vehicle body 2, and is equally applied to the left and right ends of the bumpers 1 and 1 ′. Therefore, here, the bumper structure at the left front end portion of the vehicle body 2 will be described as a representative.

  As shown in FIG. 1, the bumper 1 includes a bumper skin 9 made of a synthetic resin that covers the bumper beam 3 and the cushioning material 4 (see FIGS. 6 and 7) from the front side, and a left end portion of the bumper skin 9 at the headlamp 8. The bumper skin fixing bracket 10 is provided close to the lower surface side of the headlamp 8 so as to be attached to the lower side of the headlamp 8 with almost no gap.

  As shown in FIG. 1, an extension portion 11 that extends toward the vehicle body 2 is formed on the bumper skin 9. Then, the bumper skin 9 is fitted and held in a state in which the extending portion 11 of the bumper skin 9 is in contact with the inner part of the concave fitting portion 12 formed over the upper portion of the bracket 10. It is attached to the vehicle body 2.

  Further, a rib 13 extending toward the vehicle body 2 side (that is, the bracket 10 side) is integrally formed on the bracket-facing surface of the bumper skin 9 below the extension portion 11, similarly to the extension portion 11. Is formed. And this rib 13 is inserted in the up-and-down opposing surface parts 15 and 15 'of the recessed part 14 integrally formed in the bracket 10 according to the rib 13. As shown in FIG.

  The upper and lower opposing surface portions 15 and 15 ′ are formed so as to be spaced substantially parallel to each other in the vertical direction, and are joined to the upper surface side of the rib 13 inserted when the bumper skin of the bracket 10 is attached (that is, the side surface facing the headlight 8 side). In addition, the rib 13 is formed to be sufficiently separated from the lower surface side. Further, when the impact load from the front of the vehicle body, such as a light collision, acts on the bumper skin 9, the upper and lower facing surface portions 15, 15 ′ are separated from the head lamp 8, that is, the rib 13 toward the lower side. It is formed to induce.

  Further, the rib 13 inserted at the time of mounting the bumper skin is abutted on the back of the recess 14 to improve the positioning accuracy at the time of mounting the bumper skin, and the impact load from the front of the vehicle body is applied to the bumper skin. When it acts on 9, the abutting part 16 which makes the rib 13 move back diagonally downward is formed. In other words, when an impact load from the front of the vehicle body acts on the bumper skin 9, the rib 13 is guided to move backward obliquely by the upper and lower opposing surface portions 15 and 15 ′ and the abutting portion 16. As a result, the bumper skin 9 moves and deforms in a direction away from the headlamp 8, and absorbs and relaxes the impact load.

  The bumper structure at the right front end of the vehicle body 2 is also configured in the same manner as the bumper structure at the left front end of the vehicle body 2 described above.

  Thus, when an impact load from the front of the vehicle body acts on the bumper skin 9, the ribs 13 are obliquely lowered by the upper and lower opposing surface portions 15, 15 'and the abutting portion 16, as indicated by arrows in FIG. Move backwards while heading to. As a result, the bumper skin 9 moves and deforms toward the lower side separated from the headlamp 8 disposed close to the upper side of the bracket 10 to absorb and relax the impact load. Therefore, even if the headlamp 8 and the bracket 10 are arranged close to each other, the bumper skin 9 that has been deformed by receiving an impact load is less likely to interfere with the headlight 8, and the impact load is reliably absorbed and mitigated. 8 breakage is prevented. For this reason, it is not necessary to employ the reinforced type headlight 8, and the manufacturing cost can be reduced. In addition, since the division gap between the headlight 8 and the bumper skin 9 can be made less conspicuous, the appearance of the vehicle appearance is further improved.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a side sectional view showing a bumper structure according to a second embodiment.
Instead of the abutting portion 16 of the first embodiment described above, the upper and lower opposing surface portions 15 and 15 'of the recess 14 are smoothly connected to the inner portion of the recessed portion 14 of the bracket 10 in the second embodiment. A guide portion 17 is formed. Thereby, in this 2nd Example, if the impact load from the front of a vehicle body acts on the bumper outer skin 9, the rib 13 will move back diagonally downward without being crushed by the guide part 17. FIG. For this reason, the bumper skin 9 moves and deforms toward the lower side separated from the headlamp 8 disposed close to the upper side of the bracket 10 to absorb and relax the impact load. Therefore, even if the headlamp 8 and the bracket 10 are arranged close to each other, the bumper skin 9 that has been deformed by receiving an impact load is less likely to interfere with the headlight 8, and the impact load is reliably absorbed and mitigated. 8 breakage is prevented.

Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a side sectional view showing a bumper structure according to a third embodiment.
In the inner part of the concave portion 14 of the bracket 10 in the third embodiment, when an impact load from the front-rear direction of the vehicle body acts on the bumper skin 9, the rib 13 is prevented from moving backward, and the rib 13 is placed on the lower side. That is, a second abutting portion 18 is formed that guides the headlight 8 so as to bend and deform in a direction away from the headlight 8. In order not to hinder the deformation of the rib 13, the upper and lower opposing surface portions 15 and 15 'of the recess 14 are formed in a non-parallel manner, and the lower surface portion 15' is formed to be in a front-lowering state. Thus, in the third embodiment, when an impact load from the front of the vehicle body acts on the bumper skin 9, the second abutting portion 18 prevents the rib 13 from moving backward, and the rib is directed downward. 13 is curved and deformed. For this reason, the bumper skin 9 moves and deforms toward the lower side separated from the headlamp 8 disposed close to the upper side of the bracket 10 to absorb and relax the impact load. Therefore, even if the headlamp 8 and the bracket 10 are arranged close to each other, the bumper skin 9 that has been deformed by receiving an impact load is less likely to interfere with the headlight 8, and the impact load is reliably absorbed and mitigated. 8 breakage is prevented.

Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 5 is a side sectional view showing a bumper structure according to a fourth embodiment.
In the back of the recess 14 of the bracket 10 in the fourth embodiment, a third butting portion having the same form as the butting portion 16 formed in the recess 14 of the bracket 10 in the first embodiment. 19 is formed. Further, a fourth abutting portion 20 having the same form as the abutting portion 16 formed in the concave portion 14 of the bracket 10 in the first embodiment is also formed in the inner portion of the fitting portion 12. .

  Further, the fitting portion 12 is formed so as to have upper and lower opposing surface portions 21 and 21 ′ which are similar to the upper and lower opposing surface portions 15 and 15 ′ of the recess 14 in the first embodiment. In other words, the upper and lower opposing surface portions 21 and 21 ′ are formed to be spaced apart from each other substantially parallel to the upper and lower sides, and are joined to the upper surface side (that is, the side surface facing the headlight 8) of the protruding portion 11 inserted when the bumper skin is attached. In addition, it is formed so as to be sufficiently separated from the lower surface side of the protruding portion 11. Further, the upper and lower opposing surface portions 21 and 21 ′ are formed so as to guide the protruding portion 11 in a direction away from the headlamp 8, that is, downward when an impact load from the front of the vehicle body acts on the bumper skin 9. Has been.

  As described above, when an impact load from the front of the vehicle body acts on the bumper skin 9, the projecting portion 11 moves backward while moving obliquely downward by the upper and lower opposing surface portions 21, 21 ′ and the fourth abutting portion 20, and The rib 13 moves backward while being directed obliquely downward by the vertically opposed surface portions 15 and 15 ′ and the third abutting portion 19. As a result, the bumper skin 9 moves and deforms toward the lower side separated from the headlamp 8 disposed close to the upper side of the bracket 10 to absorb and relax the impact load. Therefore, even if the headlamp 8 and the bracket 10 are arranged close to each other, the bumper skin 9 deformed by receiving an impact load is less likely to interfere with the headlight 8, and the impact load is reliably absorbed and mitigated. Damage to the lamp 8 is prevented in advance.

As described above, the case where the present bumper structure is applied to the bumper 1 attached to the front end portion of the vehicle body has been described. However, the present bumper structure is not limited to this, and the bumper 1 ′ attached to the rear end portion of the vehicle body is also applicable. Can be applied.
Further, the vehicle body attachment component is not limited to the headlight 8, and may be a grill, a garnish, or a lighting device.

It is the sectional side view which showed the bumper structure concerning a present Example. It is the sectional side view which showed the deformation | transformation state of the bumper skin in the example. It is the sectional side view which showed the bumper structure concerning a 2nd Example. It is the sectional side view which showed the bumper structure concerning a 3rd Example. It is the sectional side view which showed the bumper structure which concerns on a 4th Example. It is the perspective view which showed the outline of the conventional bumper structure. It is sectional drawing in the AA arrow line in FIG.

Explanation of symbols

1, 1 'Bumper 2 Body body 8 Headlamp (body mounting parts)
9 Bumper skin 10 Bumper skin fixing bracket 13 Rib 14 Recesses 15, 15 'Vertically opposed surface portion 16 Abutting portion 18 Second abutting portion

Claims (3)

In the bumper structure in which the bumper skin is attached to the vehicle body body via a bumper skin fixing bracket that is arranged close to the vehicle body mounting component,
A rib extending toward the vehicle body is formed on the bumper skin, and a concave portion for inserting the rib is formed on the bracket. The concave portion is joined to a side surface of the body mounting part of the inserted rib, A bumper structure having an upper and lower opposing surface portion for guiding the rib in a direction away from the vehicle body attachment component when an impact load from the front-rear direction acts on the bumper skin.   2. The bumper according to claim 1, wherein the concave portion has an abutting portion that causes the rib to move backward obliquely downward when an impact load from the front-rear direction of the vehicle body acts on the bumper skin. Construction.   The concave portion has a second abutting portion that prevents the rib from retreating when the impact load from the front-rear direction of the vehicle body acts on the bumper skin and causes the rib to bend and deform downward. The bumper structure according to claim 1, wherein:

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