JPH0631009B2 - Body front structure - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body front structure in which an engine room is provided in a front portion of a vehicle body.

2. Description of the Related Art Conventionally, as a front structure of an automobile, the structure shown in FIGS. 5 and 6 has been proposed (see Japanese Utility Model Laid-Open No. 60-199272). That is, an engine room 2 is provided in the front part of the vehicle body 1, and an openable / closable engine hood 3 is closed at an upper opening of the engine room 2.
A front fascia cover 4 extending in the vehicle width direction is arranged in the vicinity of a front end portion of the engine hood 3, and the front fascia cover 4 is attached to a front end panel 5 constituting a front wall of the engine room 2. Has been.

Problems to be Solved by the Invention However, in such a conventional structure, the vehicle body 1
The front fascia cover 4 located at the front end portion of the above is disposed close to the engine hood 3 as described above, and is attached to the front end panel 5 that constitutes the front wall of the engine room 2. Therefore, as shown in FIG. 6, when the vehicle body 1 collides with the obstacle 0 in front and the front bump fascia cover 4 is crushed, the engine hood 3 and the front end panel 5 are directly hit by the obstacle 0. Therefore, while the engine hood 3 is buckled and deformed, the front end panel 5 is backwardly deformed toward the inside of the engine room 2 and, as a result, an important radiator such as a radiator housed in the engine room 5 is important. Functional parts will be damaged. Therefore, in the repair work after the collision, not only the front fascia cover 4 and the front end panel 5 but also the replacement and repair of important functional parts such as a radiator housed in the engine room 2 and the engine hood are required. The repair cost had to be increased.

The present invention has been made in view of the above conventional problems, and by making it possible to absorb the collision energy at the time of a frontal collision, damage of various important functional components housed and arranged in the engine room is prevented. (EN) A vehicle body front structure that can be reduced.

Means for Solving the Problems In order to solve the problems, according to the present invention, a front bumper fascia arranged at a front end portion of a vehicle body and covering a front bumper and a top opening portion of an engine room are closed. A space extending in the vehicle width direction is formed between the front end of the engine hood, and a metal lid is arranged at a position covering the upper opening of the space, and the front end and the rear end of the lid are arranged. The parts are removably attached to the rear end of the front bumper fascia and the support member extending along the front end of the engine hood.

Action In the above configuration, when the vehicle body collides with the front surface, collision energy is input to both members of the front bumper located at the front end portion of the vehicle body and the front bumper fascia that covers the front bumper, and the two members are deformed backward. At this time, since a space is formed between the front bumper fascia and the front end of the engine hood, the backward deformation of both members causes the lid body to be crushed in the space without directly interfering with the engine room. While being done. Therefore, the collision energy is absorbed along with the backward deformation of the member in the space, and damage to the engine hood, the engine room, and various important functional parts housed in the engine room is reduced. Further, functional parts that are inconvenient to be affected by heat in the engine room are disposed by effectively utilizing the space, and the functional parts are maintained and maintained by removing the removable lid.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.
That is, as shown in FIGS. 1 and 2, the vehicle body 10 is divided by a dash panel 11 into a passenger compartment 12 located substantially in the center and an engine compartment 13 located in the front. A cowl box 14 having a closed cross-section extending in the vehicle width direction is provided at an upper end portion of the dash panel 11, and the cowl box 14 has the cowl box 14 in the engine room 1.
An engine hood 16 closed in the upper surface opening 15 of 3 is pivotally provided via a hood hinge (not shown). A radiator core support 18, which is a support member extending in the vehicle width direction along the front end portion 17 of the engine hood 16, is disposed above the front end of the engine room 13, and the radiator core support 18 is provided in the engine room 13. A front wall is partially configured, and a cross member 19 is disposed below the front wall. Between the cross member 19 and the radiator core support 18, a condenser 20 of an air conditioner is installed so as to form a front wall of the engine room together with the radiator core support 18, and the condenser 20
A radiator fan 21 is arranged on the front side and a radiator core 22 is arranged on the rear side.

Further, on both sides of the engine room 13, side members 23 having rear end portions fixed to the dash panel 11 and extending in the front-rear direction of the vehicle body are arranged. The front end portions of the side members 23 are located in the engine room 13. It extends further forward. A shock absorber 24 is attached to the front end surface of the side member 23, and a front bumper 25 extending in the vehicle width direction is fixed to the shock absorber 24. The front bumper 25 is covered by a front bumper fascia 26 arranged at the front end of the vehicle body 10, and the rear end 27 of the front bumper fascia 26 is in a direction facing the front end 17 of the engine hood 16. Has been extended to. The engine hood 16
Between the front end portion 17 and the rear end portion 27 of the front bumper fascia 26, a space 29 having an upper surface opening portion 28 and extending in the vehicle width direction is formed. The space 29 is separated from the front surface by the front bumper fascia 26 and an apron 31 integrally formed under the front bumper fascia 26 via an air intake 30.
The rear surface is separated from the radiator core support 18 by the condenser 20 mounted so as to form the front wall of the engine room 13. Further, the bottom surface of the space 29 is separated by an under cover 32 having a front end held and fixed to the apron 31 and a rear end fixed to the lower surface of the cross member 19, and
Both side surfaces of the space 29 are separated by a front fender panel or a hood ridge (not shown).

At the rear end portion 27 of the front bumper fascia 26,
As shown in an enlarged manner in FIG. 3, a flange 33 is provided vertically, and the finisher retainer 3 is attached to the flange 33.
4 is fitted. As shown in FIG. 4, a weld pin 35 is intermittently planted in a portion of the finisher retainer 34 facing the space 29, and a rubber 36 is externally fitted and attached to the weld pin 35. On the other hand, a bracket 37 is extended on the radiator core support 18, which is the support member. The lid 39 that covers the upper surface opening 28 of the space 29 is made of a metal material that absorbs energy when it is crushed, and the hole 4 formed at the front end portion.
0 on the rubber 36 and the rear end of the bolt 4
1 and a nut 42 are screwed to the bracket 37, and are installed between the rear end portion 27 of the front bumper fascia 26 and the front end portion 17 of the engine hood 16. At the rear end of the lower surface of the lid 39, the reinforcement 4
3 is welded, and a finisher 44 formed of a transparent resin or the like is provided on the upper surface. A locking piece 45 is projected from the front end of the finisher 44, and the locking piece 45 is fitted on the lid 39.
It is locked to 6. On the other hand, a screw 47 is inserted through the rear end of the finisher 44, and the screw 47 is locked by a rear grommet 48 located on the lower surface side of the lid. In FIG. 1, 49 is an air cleaner disposed in the space 29.

In this embodiment having the above-described structure, as shown in FIG. 1, at the time of a light collision in which the vehicle body 10 collides with the obstacle 0 at a low speed in front of the vehicle, the contracting action of the shock absorber 24 absorbs the collision energy. The front portion of the front bumper fascia 26 is displaced backward together with the front bumper 25 as the shock absorber 24 contracts. Further, even if the front part of the front bumper fascia 26 is retracted and pressed, the resin-made front bumper fascia 26 is elastically deformed and the mounting portion of the rear end part 27 is subjected to the receding displacement.
9 and the finisher 44 are not deformed. Then, when the collision load disappears and the shock absorber 24 expands, the front bumper fascia 26 returns to the original position in accordance with this, and the shape in the normal state is restored. Therefore, at the time of such a light collision, each vehicle body component is not damaged, and, of course, the functional parts housed in the engine hood 16 and the engine room 13 are not damaged.

Next, at the time of a heavy collision in which the vehicle body 10 collides with the obstacle 0 at a speed such that the front bumper 25 is deformed, the bumper fascia 26 is deformed backward together with the front bumper 25 due to the collision energy. At this time, between the front bumper fascia 26 and the front end portion 17 of the engine hood 16,
Since the space 29 is formed, the front bumper 25 and the front bumper fascia 26 are deformed backward while crushing the lid 39 and the finisher 44 in the formed space 29. Therefore, a larger amount of collision energy is absorbed by the collapse of the lid body 39 as the front bumper 25 and the front bumper fascia 26 are retracted and deformed in the space 29. Further, as a result of such a space, even if the front bumper 25 and the front bumper fascia 26 are deformed backward, the engine room 1
3 is unlikely to directly interfere with the engine hood 16 and the lid 39 and the finisher 44 are crushed, but
The influence on the engine room 13 and the engine hood 16 is slight. Therefore, damage to the condenser 20, the radiator 22, and other expensive important functional parts housed in the engine room 13 is reduced, and the front bumper 2
By replacing relatively inexpensive members such as 1, the front bumper fascia 26, and the lid 39, the repair can be performed, and the repair cost after a heavy collision can be reduced. Of course, when the front bumper 25 and the front bumper fascia 26 are retracted and deformed, the air cleaner 4
9 may be destroyed, but the air cleaner 49
Is a relatively inexpensive member among the functional parts arranged in the engine room 13, and therefore has little influence on the repair cost.

Moreover, in the air cleaner 49 arranged in the space 29, the cold outside air introduced into the space from the air intake 30 can be sucked and transferred to the engine without being affected by the heat in the engine room 13. it can. Therefore, a part such as the air cleaner 49 which is inconveniently affected by the heat in the engine room 13 is used as the space 29.
By effectively arranging the components, not only the function and durability of the component 49 can be improved, but also overcrowding of the components housed and arranged in the engine room 13 can be eliminated. The lid 39 has the bolt 41 and the nut 42.
After being unscrewed from the rubber 36, the hole 40 can be removed by pulling it out from the rubber 36, and the parts such as the air cleaner 49 arranged in the space 29 can be easily maintained and maintained.

Advantageous Effects of Invention As described above, according to the present invention, the front bumper fascia that covers the front bumper disposed at the front end of the vehicle body and the front end of the engine hood that closes the upper opening of the engine room are connected to the vehicle. The space extending in the width direction is separated. Therefore, at the time of a frontal collision, the front bumper and the front bumper fascia retreat and deform in this space, and the lid body is crushed, so that more collision energy can be absorbed, and the engine hood or the engine room can be absorbed. It is possible to reduce damage to various important functional parts housed and arranged in the. Further, since the lid provided in the opening of the upper surface of the space is configured to be removable, the lid is replaced with the front bumper and the front bumper fascia which have been deformed backward as described above after the frontal collision. As a result, it is possible to reduce the repair cost after the frontal collision, together with the reduction of damage to the various important functional components.

Furthermore, it is possible to arrange a functional component that is inconvenient to be affected by heat in the engine room by effectively utilizing the space, thereby improving the performance and durability of the functional component. It is possible to eliminate overcrowding in the engine room, and by removing the removable lid, maintenance of the functional parts arranged in the space,
It also enables easy maintenance.

[Brief description of drawings]

1 is a sectional view taken along the line II of FIG. 2 showing an embodiment of the present invention, FIG. 2 is an external perspective view of a vehicle body according to the same embodiment, and FIG. 3 is an enlarged sectional view of part A in FIG. FIG. 4 is an enlarged sectional view taken along line IV-IV of FIG. 2, FIG. 5 is a perspective view of a conventional vehicle body, and FIG.
FIG. VI-VI line sectional view. 10 ... Car body, 13 ... Engine room, 15 ... Upper opening (in engine room), 16 ... Engine hood, 17 ... Front end (in engine hood), 18 ... Radiator core support (support member) , 25 …… front bumper, 26 …… front bumper facia, 27 ……
Rear end (of front bumper fascia), 28 ... upper opening (of space), 29 ... space, 39 ... lid.

Claims (1)

[Claims] 1. A space extending in the vehicle width direction between a front bumper fascia arranged at a front end portion of a vehicle body and covering a front bumper, and a front end portion of an engine hood closed at an upper opening of an engine room. Is formed, and a lid made of metal is arranged at a position to cover the upper opening of the space, and a front end portion and a rear end portion of the lid body are respectively the rear end portion of the front bumper fascia and the engine hood. A vehicle body front portion structure, which is detachably attached to a support member extending along a front end portion.