JP6997937B2 - Vehicle front structure - Google Patents

Description

The present invention relates to a vehicle front structure comprising a bonnet hood and a cowl louver provided between the bonnet hood and the windshield.

Conventionally, a cowl louver formed of a hard resin material is provided between the rear end of the bonnet hood of an automobile and the lower end of the front windshield (see, for example, Patent Document 1). The cowl louver has a base portion extending in the vehicle width direction and a vertical wall portion protruding upward from the base portion and extending in the vehicle width direction. The lower end of the cowl louver is attached to the cowl provided below. The rear end of the cowl louver is attached to the windshield. Further, an insertion hole through which the rotation shaft portion of the wiper is inserted is provided in a portion of the cowl louver on the rear side of the vertical wall portion.

Japanese Patent Application Laid-Open No. 2015-112985

By the way, some cowl louvers have a vertical wall portion having an overhanging portion that protrudes forward so that a portion located in front of the insertion hole does not interfere with the insertion hole. In the case of a vehicle equipped with such a cowl louver, if the overhanging portion of the vertical wall portion is located directly below the rear end portion of the bonnet hood, for example, the head of a pedestrian is placed on the vertical wall through the rear end portion of the bonnet hood. When colliding with the overhanging portion of the portion, the impact force due to the collision may not be appropriately absorbed.

An object of the present invention is to provide a vehicle front structure capable of improving shock absorption performance.

The front structure of the vehicle for achieving the above object is the front structure of the vehicle including the bonnet hood and the cowl louver provided between the bonnet hood and the windshield, in which the vehicle front-rear direction is the front-rear direction. When, the cowl louver has a base portion extending in the vehicle width direction and a vertical wall portion protruding upward from the base portion and extending in the vehicle width direction, and among the vertical wall portions. A portion located in front of the insertion hole into which the rotation shaft portion of the wiper is inserted is provided with an overhanging portion located forward and directly below the rear end portion of the bonnet hood. The overhanging portion is provided with a deformation promoting portion that is more vulnerable to a compressive load than the surrounding portion of the vertical wall portion.

According to the same configuration, when the collision body collides with the part of the rear end of the bonnet hood just above the overhanging part of the vertical wall of the cowl louver, the deformation promoting part that is more vulnerable to the compressive load than the surrounding part is formed. By promoting the deformation of the overhanging portion by being deformed, it is possible to suppress the sudden deceleration of the head. As a result, the impact force acting on the colliding body can be suitably absorbed.

In the front structure of the vehicle, the overhanging portion has a mountain-shaped vertical cross-sectional structure, and the deformation promoting portion has a mountain-shaped vertical cross-sectional structure including the top of the overhanging portion. It is preferable to be there.

According to the same configuration, since the deformation promoting portion is provided in a wide range in the front-rear direction of the overhanging portion, the deformation promoting portion further promotes the deformation of the overhanging portion. Therefore, the impact force acting on the colliding body can be more preferably absorbed.

In the front structure of the vehicle, it is preferable that the peripheral portion is formed of a hard resin material and the deformation promoting portion is formed of an elastomer.
According to the same configuration, the deformation promoting portion is formed by an elastomer, while the surrounding portion of the deformation promoting portion is formed of a hard resin material, so that the deformation promoting portion can be made more fragile than the surrounding portion. Can be done.

In the front structure of the vehicle, the deformation promoting portion of the vertical wall portion is formed of the hard resin material on the outer side in the vehicle width direction, and is pressed by the operator's finger when the cowl louver is assembled to the vehicle body. It is preferable that the portions are provided adjacent to each other.

When assembling the cowl louver to the vehicle body, the operator presses the overhanging portion or the surrounding portion with his / her fingers. At this time, if the entire portion pressed by the fingers is made of a soft material such as an elastomer, the cowl louver may be easily bent, which may reduce the workability of assembling the cowl louver.

In this respect, according to the above configuration, since the pressing portion of the vertical wall portion adjacent to the outer side of the deformation promoting portion in the vehicle width direction is formed of the hard resin material, the rigidity of the pressing portion can be ensured. .. Therefore, it is possible to suppress a decrease in the workability of assembling the cowl louver.

In the front structure of the vehicle, a pressing portion formed of the hard resin material and pressed by a worker's finger when assembling the cowl louver to the vehicle body is formed under the deformation promoting portion in the vertical wall portion. It is preferable that they are provided adjacent to each other.

When assembling the cowl louver to the vehicle body, the operator presses the overhanging portion or the surrounding portion with his / her fingers. At this time, if the entire portion pressed by the fingers is made of a soft material such as an elastomer, the cowl louver may be easily bent, which may reduce the workability of assembling the cowl louver.

In this respect, according to the above configuration, since the pressing portion adjacent to the lower side of the deformation promoting portion in the vertical wall portion is formed of the hard resin material, the rigidity of the pressing portion can be ensured. Therefore, it is possible to suppress a decrease in the workability of assembling the cowl louver.

In the front structure of the vehicle, ribs are provided inside the vertical wall portion of the deformation promoting portion in the vehicle width direction so as to project forward from the vertical wall portion and upward from the base portion. It is preferable that the rib is formed of a material fragile than the rib and is fitted with a plate-shaped regulating member that regulates the inflow of air from the outside to the inside in the vehicle width direction.

According to the same configuration, the ribs increase the rigidity of the cowl louver. Further, a plate-shaped regulating member is fitted to the rib. Therefore, the regulation member regulates the inflow of air from the outside to the inside in the vehicle width direction. As a result, it is possible to prevent the high temperature air in the engine room from being taken in through the outside air intake of the cowl louver. Therefore, it is possible to improve the cooling performance of the vehicle interior by the air conditioner.

Further, according to the above configuration, the plate thickness of the rib can be reduced as compared with the case where the regulating portion that regulates the inflow of air is configured only by the rib. Also, the regulatory member is made of a material that is more fragile than the ribs. As a result, when the colliding body collides with the regulating member, the deformation of the regulating member and the rib is promoted, so that the colliding body can be prevented from being suddenly decelerated.

According to the present invention, the shock absorption performance can be improved.

A plan view of the front part of the vehicle centered on the bonnet hood for one embodiment of the front part structure of the vehicle. The enlarged plan view which shows the part A of FIG. 1 enlarged. The perspective view which shows mainly the overhanging part of the vertical wall part of the cowl louver in the same embodiment. FIG. 3 is a perspective view corresponding to FIG. 3, which is an exploded perspective view showing the regulating member separated upward from the rib. 2 is a cross-sectional view taken along the line 5-5 of FIG. 2, where FIG. 2A shows a state immediately before the collision body collides with the rear end portion of the bonnet hood, and FIG. The figure which shows the state after the collision body collided with the part.

Hereinafter, one embodiment will be described with reference to FIGS. 1 to 5. Hereinafter, the vehicle front-rear direction will be described simply as the front-rear direction L.
As shown in FIG. 1, a bonnet hood 20 for opening and closing the upper opening of the engine room is provided in the front portion of the automobile.

As shown in FIG. 5A, the bonnet hood 20 has a hood outer panel 21 forming a design surface and a hood inner panel 22 provided on the back side of the hood outer panel 21. The outer edges of the hood outer panel 21 and the hood inner panel 22 are connected to each other by hemming. The hood outer panel 21 and the hood inner panel 22 are formed of a metal plate material such as a steel plate.

As shown in FIGS. 1 to 5 (a), a windshield 30 (also referred to as a windshield) is provided behind the bonnet hood 20. 2 to 4 show a state in which the bonnet hood 20 has been removed. Further, in FIG. 2, the outline of the bonnet hood 20 is shown by a two-dot chain line.

As shown in FIG. 1, in front of the windshield 30, a pair of wipers 40 for wiping raindrops and the like on the surface of the windshield 30 are provided side by side in the vehicle width direction W. Each wiper 40 is supported by a rotating shaft portion 41 that is rotationally driven to rotate in the forward and reverse directions by a motor (not shown), an arm portion 42 extending from the rotating shaft portion 41, and the tip of the arm portion 42 so as to be tiltable. The blade portion 43 is provided.

A cowl louver 10 is provided between the bonnet hood 20 and the windshield 30.
As shown in FIGS. 2 to 5A, the cowl louver 10 has a base portion 11 extending along the vehicle width direction W and a base portion 11 projecting upward from the rear side of the base portion 11 and in the vehicle width direction W. It has an extending vertical wall portion 15.

As shown in FIG. 1, a pair of insertion holes 14A and 14B through which the rotation shaft portion 41 of the wiper 40 is inserted are spaced in the vehicle width direction W at the rear portion of the vertical wall portion 15 in the cowl louver 10. It is provided. One of the insertion holes 14A is provided on one end side (left side in the figure) in the vehicle width direction W. The other insertion hole 14B is provided substantially in the center of the vehicle width direction W.

As shown in FIG. 5A, a cowl 50 extending along the vehicle width direction W is provided below the cowl louver 10. The lower surface of the base portion 11 is supported from below by the front end portion of the cowl 50. The rear portion of the vertical wall portion 15 in the cowl louver 10 is assembled to the lower end of the windshield 30.

As shown in FIGS. 2 to 5 (a), a portion of the vertical wall portion 15 located in front of the insertion hole 14A located on one end side in the vehicle width direction W is projected forward and has a bonnet. An overhanging portion 16 located directly below the rear end portion 20a of the hood 20 is provided. The overhanging portion 16 has a mountain-shaped vertical cross-sectional structure (see FIG. 5A).

The overhanging portion 16 is provided with a deformation promoting portion 17 made of a material that is more vulnerable to a compressive load than the surrounding portion of the vertical wall portion 15. The deformation promoting portion 17 has a mountain-shaped vertical cross-sectional structure including the top portion 17a of the overhanging portion 16. That is, the deformation promoting portion 17 has a top portion 17a, a front side inclined portion 17b extending from the top portion 17a to the front side, and a rear side inclined portion 17c extending from the top portion 17a to the rear side.

In the present embodiment, the portion of the cowl louver 10 other than the deformation promoting portion 17 is formed of a hard resin material. Further, the deformation promoting portion 17 is formed by an elastomer.
As shown in FIGS. 2 to 4, an outer pressing portion 18 pressed by an operator's finger when assembling the cowl louver 10 to the vehicle body 90 is located outside the deformation promoting portion 17 in the vertical wall portion 15 in the vehicle width direction. It is provided adjacently. Further, on the lower side of the deformation promoting portion 17 in the vertical wall portion 15, a lower pressing portion 19 that is pressed by a worker's finger when assembling the cowl louver 10 to the vehicle body 90 is provided adjacently. The outer pressing portion 18 and the lower pressing portion 19 are made of a hard resin material as described above.

Inside the vehicle width direction W of the deformation promoting portion 17 of the vertical wall portion 15, a side view L-shaped rib 12 that protrudes forward from the vertical wall portion 15 and protrudes upward from the base portion 11 is provided. Has been done.

A plate-shaped restricting member 13 formed by an elastomer and restricting the inflow of air from the outside to the inside in the vehicle width direction W is fitted to the rib 12.
The operation of this embodiment will be described.

As shown in FIGS. 5A and 5B, when the colliding body H collides with a portion of the rear end portion 20a of the bonnet hood 20 directly above the overhanging portion 16, the impact is applied to the compressive load more than the surrounding portion. By deforming the fragile deformation promoting portion 17, the deformation of the overhanging portion 16 is promoted, so that the collision body H can be prevented from being suddenly decelerated. Thereby, the impact force acting on the colliding body H can be suitably absorbed (the above is the action 1).

According to the present embodiment, the rib 12 enhances the rigidity of the cowl louver 10 (the above is the action 2).
Further, a plate-shaped regulating member 13 is fitted to the rib 12. Therefore, the regulating member 13 regulates the inflow of air from the outside to the inside in the vehicle width direction W. As a result, it is possible to prevent the high temperature air in the engine room from being taken in through the outside air intake port 10a of the cowl louver 10 (above, action 3).

Further, according to the present embodiment, the plate thickness of the rib 12 can be reduced as compared with the case where the regulating portion that regulates the inflow of air is configured only by the rib. Further, the regulating member 13 is formed of an elastomer, which is a material that is more vulnerable to a compressive load than the rib 12. As a result, when the collision body H collides with the regulation member 13, the deformation of the regulation member 13 and the rib 12 is promoted, so that the collision body H can be suppressed from being suddenly decelerated (the above, the action 4).

The effect of this embodiment will be described.
(1) Of the vertical wall portion 15 of the cowl louver 10, a portion located in front of the insertion hole 14A into which the rotation shaft portion 41 of the wiper 40 is inserted is projected forward and is the rear end of the bonnet hood 20. An overhanging portion 16 located directly below the portion 20a is provided. The overhanging portion 16 is provided with a deformation promoting portion 17 that is more vulnerable to a compressive load than the surrounding portion of the vertical wall portion 15.

According to such a configuration, the above-mentioned action 1 can be achieved, so that the impact absorption performance can be improved.
(2) The overhanging portion 16 has a mountain-shaped vertical cross-sectional structure. The deformation promoting portion 17 has a mountain-shaped vertical cross-sectional structure including the top portion 17a of the overhanging portion 16.

According to such a configuration, since the deformation promoting portion 17 is provided in a wide range in the front-rear direction of the overhanging portion 16, the deformation of the overhanging portion 16 is further promoted by the deformation promoting portion 17. Therefore, the impact force acting on the colliding body H can be more preferably absorbed.

(3) The portion of the cowl louver 10 other than the deformation promoting portion 17 is formed of a hard resin material. The deformation promoting portion 17 is formed by an elastomer.
According to such a configuration, the deformation promoting portion 17 is formed by an elastomer, while the portion other than the deformation promoting portion 17 is formed of a hard resin material, so that the deformation promoting portion 17 is made more fragile than the surrounding portions. Can be easily done.

(4) On the outer side of the deformation promoting portion 17 of the vertical wall portion 15 in the vehicle width direction W, an outer pressing portion 18 formed of a hard resin material and pressed by an operator's finger when assembling the cowl louver 10 to the vehicle body 90 is provided. It is provided adjacently. Further, on the lower side of the deformation promoting portion 17 in the vertical wall portion 15, a lower pressing portion 19 formed of a hard resin material and pressed by a worker's finger when assembling the cowl louver 10 to the vehicle body 90 is adjacent. It is provided.

When assembling the cowl louver 10 to the vehicle body 90, the operator presses the overhanging portion 16 or a portion around the overhanging portion 16 with his / her fingers. At this time, if the entire portion pressed by the fingers is made of a soft material such as an elastomer, the cowl louver 10 may be easily bent, which may reduce the workability of assembling the cowl louver 10.

In this respect, according to the above configuration, of the vertical wall portions 15, the outer pressing portion 18 adjacent to the W outer side of the deformation promoting portion 17 in the vehicle width direction and the lower pressing portion 19 adjacent to the lower side of the deformation promoting portion 17 are It is made of a hard resin material. Therefore, the rigidity of the pressing portions 18 and 19 is ensured. Therefore, it is possible to suppress a decrease in the workability of assembling the cowl louver 10.

(5) A rib 12 is provided inside the vehicle width direction W of the deformation promoting portion 17 of the vertical wall portion 15 so as to project forward from the vertical wall portion 15 and upward from the base portion 11. .. A plate-shaped restricting member 13 formed by an elastomer and restricting the inflow of air from the outside to the inside in the vehicle width direction W is fitted to the rib 12.

According to such a configuration, since the above-mentioned action 3 can be achieved, the cooling performance of the vehicle interior by the air conditioner can be improved.
Further, since the above-mentioned action 4 can be exhibited, the impact absorption performance can be improved.

This embodiment can be modified and implemented as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
-The regulation member 13 can be omitted. In this case, the inflow of air from the outside to the inside in the vehicle width direction W can be regulated by forming the rib 12 in the same shape as the regulating member 13.

-For example, the formation range of the deformation promoting portion 17 may be expanded by forming the portion corresponding to the outer pressing portion 18 with an elastomer.
-For example, the formation range of the deformation promoting portion 17 may be expanded by forming the portion corresponding to the lower pressing portion 19 by an elastomer.

-The deformation promoting portion 17 is not limited to that formed by the elastomer. Alternatively, for example, the deformation promoting portion may be formed of a resin material that is more vulnerable to a compressive load than the surrounding portion of the vertical wall portion 15.

The deformation promoting portion 17 is not limited to the one having a mountain-shaped vertical cross-sectional structure. For example, the deformation promoting portion may be formed only by the top portion 17a and the front inclined portion 17b, or the deformation promoting portion may be formed only by the top portion 17a and the rear inclined portion 17c. Further, only the top portion 17a may be used as the deformation promoting portion, or only the front inclined portion 17b may be used as the deformation promoting portion. Further, only the rear inclined portion 17c can be used as the deformation promoting portion.

10 ... Cowl louver, 10a ... Outside air intake, 11 ... Base part, 12 ... Rib, 13 ... Regulatory member, 14A, 14B ... Insertion hole, 15 ... Vertical wall part, 16 ... Overhanging part, 17 ... Deformation promoting part, 17a ... Top, 17b ... Front inclined part, 17c ... Rear inclined part, 18 ... Outer pressing part, 19 ... Lower pressing part, 20 ... Bonnet hood, 20a ... Rear end, 21 ... Hood outer panel, 22 ... Hood inner panel , 30 ... Windshield, 40 ... Wiper, 41 ... Rotating shaft part, 42 ... Arm part, 43 ... Blade part, 50 ... Cowl, 90 ... Body, H ... Collision body.

Claims (5)

In the front structure of a vehicle comprising a bonnet hood and a cowl louver provided between the bonnet hood and the windshield.
When the vehicle front-rear direction is the front-rear direction
The cowl louver has a base portion extending in the vehicle width direction and a vertical wall portion protruding upward from the base portion and extending in the vehicle width direction.
Of the vertical wall portion, the portion located in front of the insertion hole through which the rotation shaft portion of the wiper is inserted projects forward, and the overhanging portion located directly below the rear end portion of the bonnet hood. Is provided,
The overhanging portion is provided with a deformation promoting portion that is more vulnerable to a compressive load than the surrounding portion of the vertical wall portion.
Inside the vertical wall portion of the deformation promoting portion in the vehicle width direction, ribs are provided so as to project forward from the vertical wall portion and upward from the base portion.
The rib is formed of a material that is more vulnerable to a compressive load than the rib, and is fitted with a plate-shaped regulating member that regulates the inflow of air from the outside to the inside in the vehicle width direction.
The front structure of the vehicle. The overhanging portion has a mountain-shaped vertical cross-sectional structure.
The deformation promoting portion has a mountain-shaped vertical cross-sectional structure including a top portion of the overhanging portion.
The front structure of the vehicle according to claim 1. The surrounding part is formed of a hard resin material, and the surrounding part is formed of a hard resin material.
The deformation promoting portion is formed by an elastomer.
The front structure of the vehicle according to claim 1 or 2. On the outer side of the vertical wall portion in the vehicle width direction, a pressing portion formed of the hard resin material and pressed by a worker's finger when assembling the cowl louver to the vehicle body is provided adjacent to the vertical wall portion. Yes,
The front structure of the vehicle according to claim 3. Below the deformation promoting portion in the vertical wall portion, a pressing portion formed of the hard resin material and pressed by a worker's finger when assembling the cowl louver to the vehicle body is adjacently provided.
The front structure of the vehicle according to claim 3 or 4.

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