JP6812753B2 - Body front structure - Google Patents

Description

The present invention relates to a vehicle body front structure.

For example, Patent Document 1 discloses an automobile cowl louver. In Patent Document 1, a cowl louver covers the gap between the lower end of the windshield and the rear end of the engine hood. Further, the cowl louver of Patent Document 1 is provided with an upright wall, and an outside air intake hole and an easily deformable portion are formed in the upright wall. As a result, when a collision load is applied from above, the upright wall can be crushed and deformed around the easily deformed portion.

Japanese Unexamined Patent Publication No. 2009-1216

As disclosed in Patent Document 1, an outside air intake hole is formed in the cowl louver. Not only the outside air but also foreign substances such as pebbles and rainwater (hereinafter referred to as rainwater) may infiltrate from the outside air intake hole. Therefore, it is necessary to shield a part of the outside air intake hole of the cowl louver at a place where it is desired to prevent rainwater or the like from entering the member arranged behind the outside air intake hole.

As a method of preventing the ingress of rainwater or the like, it is conceivable to attach a member that shields the outside air intake hole. However, the rigidity of the cowl louver is increased at the place where such a member is attached. Then, there is a concern that the deformation of the cowl louver when a collision load is applied is hindered and the load absorption performance is deteriorated.

In view of such problems, it is an object of the present invention to provide a vehicle body front structure capable of maintaining good load absorption performance of a cowl top garnish while suitably preventing foreign matter and rainwater from entering. ..

In order to solve the above problems, a typical configuration of the vehicle body front structure according to the present invention is a cowl that is fixed to the front window of the vehicle and extends from a position below the front window to the rear dash panel while descending. In the vehicle body front structure including the cowl top garnish that is also fixed to the front panel and is long in the vehicle width direction, the vehicle body front structure is further formed from the opening formed in the cowl top garnish and the rear side of the cowl top garnish. The cowl top garnish is the upper part of the opening, including the shield that closes the opening, and the upper wall that extends from the lower edge of the front window to the shield and is fixed to the shield and extends further forward from the shield. The lower part of the opening, which extends in the front-rear direction from the tip of the cowl front panel and is locked to the shielding plate at the rear end, and the mounting part that attaches the lower wall to the tip of the cowl front panel. there are, and having a mounting portion in which the first weak portion weakness is provided.

According to the present invention, it is possible to provide a vehicle body front structure capable of maintaining good load absorption performance of a cowl top garnish while suitably preventing foreign matter and rainwater from entering.

It is an overall perspective view which shows 1st Example of the vehicle body front structure which concerns on this invention. FIG. 5 is a cross-sectional view taken along the line AA of the vehicle body front structure shown in FIG. It is an enlarged sectional view. It is a perspective view of a cowl top garnish. It is a figure explaining the behavior of the cowl top garnish and the shielding plate of 1st Example when receiving a collision load. It is sectional drawing which shows the 2nd Example of the vehicle body front part structure which concerns on this invention. It is a figure explaining the behavior of the cowl top garnish and the shielding plate of the 2nd Example when receiving a collision load.

The vehicle body front structure according to the embodiment of the present invention is fixed to the front window of the vehicle, and is also fixed to the cowl front panel extending downward from a position below the front window to the rear dash panel. In the vehicle body front structure including the cowl top garnish longitudinally longitudinal in the width direction, the vehicle body front structure further includes an opening formed in the cowl top garnish and a shielding plate that closes the opening from the rear side of the cowl top garnish. The cowl top garnish is the upper part of the opening, the upper wall part that extends from the lower edge of the front window to the shield plate and is fixed to the shield plate and extends further forward from the shield plate, and the lower part of the opening. there are, a lower wall portion which is engaged with the shielding plate at the rear end extends in the longitudinal direction from the tip of the cowl front panel, a mounting portion for mounting a lower wall portion to the distal end of the cowl front panel, fragile first weak It is characterized by having a mounting portion provided with a portion .

According to the above configuration, by closing the opening of the cowl top garnish with a shielding plate, it is possible to preferably prevent rainwater, foreign matter, etc. from entering behind the opening. The cowl top panel located above the cowl front panel or the dash panel located behind the cowl front panel has an outside air intake, and the cowl top garnish opening is in front of this outside air intake. To position. Therefore, the shielding plate can prevent rainwater, foreign matter, etc. from entering the vehicle interior from the outside air intake.

On the other hand, since the fragile first fragile portion is provided in the mounting portion for attaching the lower wall portion of the cowl top garnish to the cowl front panel, the first fragile portion breaks when a collision load is applied, and the lower wall portion And the cowl front panel is released. As a result, the lower wall portion can easily move toward the rear of the vehicle while receiving a load, so that good load absorption can be obtained.

Further, in the above configuration, the shielding plate is fixed to the upper wall portion and locked to the lower wall portion. As a result, when a collision load is applied, the shielding plate moves in the same direction following the movement of the upper wall portion. Then, by moving the shielding plate, the locking between the lower wall portion and the shielding plate is released. As a result, the lower wall portion can be further moved toward the rear of the vehicle, so that the load absorption performance can be further improved.

The shielding plate faces a parallel portion extending along the upper surface of the lower wall portion of the cowl top garnish to the rear of the rear end of the lower wall portion, and a parallel portion bent from the parallel portion to face the rear end of the lower wall portion of the cowl top garnish. It is preferable to have a locking portion for locking the rear end. According to such a configuration, the shielding plate is locked to the lower wall portion without providing a separate component for locking or forming a locking hole in the lower wall portion. Can be done. In addition, rainwater that has entered the opening of the cowl top garnish can be discharged from between the rear end of the lower wall portion and the locking portion.

The shielding plate may further have an extension that bends from the locking portion and extends forward along the lower surface of the lower wall of the cowl top garnish. As a result, the locking portion and the extension portion are surely caught on the rear end of the lower wall portion. Therefore, it is possible to stabilize the locked state of the lower wall portion and the shielding plate during non-collision, that is, during normal operation.

The shielding plate may further have a protrusion that projects forward toward the opening. According to such a configuration, higher load absorption performance can be obtained by deforming the protruding portion when the upper wall portion moves downward due to the collision load.

The cowl top garnish further has a fragile stepped second fragile portion formed on the lower wall portion in front of the first fragile portion, and a shielding plate is further formed between the parallel portion and the protruding portion. It is preferable to have a stepped shoulder portion located behind the second fragile portion.

According to this configuration, the second fragile portion breaks when a collision load is applied, and the portion of the lower wall portion in front of the second fragile portion moves toward the rear of the vehicle. At this time, since the moved portion abuts on the shoulder portion of the shielding plate, the movement of the shielding plate to the rear of the vehicle is promoted, and by extension, the locking between the lower wall portion and the shielding plate can be released more reliably.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the examples are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are designated by the same reference numerals to omit duplicate description, and elements not directly related to the present invention are not shown. To do.

(First Example)
FIG. 1 is an overall perspective view showing a first embodiment of the vehicle body front structure 100 according to the present invention. FIG. 1A is a perspective view of a vehicle including the vehicle body front structure 100 of the first embodiment observed from the front, and FIG. 1B is a vehicle including the vehicle body front structure 100 of the first embodiment. It is a perspective view which observed from the rear. FIG. 2 is a sectional view taken along the line AA of the vehicle body front structure shown in FIG. 3A and 3B are enlarged cross-sectional views, FIG. 3A is an enlarged view of the vicinity of the cowl top garnish 110, and FIG. 3B is an enlarged view of the vicinity of the rear end of the shielding plate 130.

As illustrated in FIG. 2, in the vehicle body front structure 100, the cowl front panel 104 is arranged below the front window 102. The cowl front panel 104 extends downward from a position below the front window 102 to the rear dash panel 106. In the vehicle body front structure 100 according to the present embodiment, the upper portion of the cowl top garnish 110 is fixed to the front window 102, and the lower portion is fixed to the cowl front panel 104.

FIG. 4 is a perspective view of the cowl top garnish 110. FIG. 4A is a perspective view of the cowl top garnish 110 observed from the front of the vehicle, and FIG. 4B is a perspective view of the cowl top garnish 110 observed from the rear of the vehicle. As shown in FIGS. 1A and 4A, the cowl top garnish 110 is a member long in the vehicle width direction.

As shown in FIG. 2, the cowl top garnish 110 is formed with an opening 110a. As shown in FIGS. 2 and 4B, the shielding plate 130 is attached to the cowl top garnish 110 from the rear side of the vehicle to close (shield) the opening 110a.

Further, as shown in FIG. 2, a cowl top panel 108 is arranged above the cowl front panel 104. As shown in FIGS. 1B and 2, in this embodiment, the cowl top panel 108 is formed with an outside air intake port 108a for taking in outside air. In this embodiment, the cowl top panel 108 is provided with the outside air intake 108a, but the present invention is not limited to this, and the dash panel 106 may be provided with the outside air intake. ..

As described above, the cowl top garnish 110 is provided with an opening 110a for taking in outside air, but when taking in outside air from there, foreign matter such as rainwater or pebbles may also enter. Then, foreign matter such as rainwater or pebbles that has passed through the opening 110a of the cowl top garnish 110 may be taken into the inside from the outside air intake port 108a provided on the cowl top panel 108. Therefore, the cowl top garnish 110 is provided with a shielding plate 130 at a position in front of the outside air intake port 108a to prevent foreign matter such as rainwater or pebbles from entering the outside air intake port 108a.

As shown in FIG. 3A, the vehicle body front structure of this embodiment includes a cowl top garnish 110 and a shielding plate 130. The cowl top garnish 110 has an upper wall portion 112, a lower wall portion 120, and a first fragile portion 140. The upper wall portion 112 is an upper portion of the opening 110a, extends from the lower edge 102a of the front window 102 to the shielding plate 130, and further extends forward from the shielding plate 130. A fixing portion 114 to which the shielding plate 130 is fixed is provided on the back surface of the upper wall portion 112.

The lower wall portion 120 is a lower portion of the opening 110a, extends in the front-rear direction from the front end of the cowl front panel 104, and is locked to the shielding plate 130 at the rear end. Further, on the lower surface 120a of the lower wall portion 120, a mounting portion 122 that serves as a mounting location for the tip of the cowl front panel 104 is formed, and the first vulnerability is vulnerable to the boundary between the mounting portion 122 and the lower wall portion 120. A unit 140 is provided.

The shielding plate 130 has a shielding portion 132 and a parallel portion 134. The upper portion of the shielding portion 132 is fixed to the fixing portion 114 of the upper wall portion 112, and extends from the back surface of the fixing portion 114 toward the lower wall portion 120. The parallel portion 134 extends along the lower wall portion 120 of the cowl top garnish 110, that is, parallel to the lower wall portion 120 and beyond the rear end of the lower wall portion 120.

Further, the shielding plate 130 may be provided with a locking portion 136 that bends from the parallel portion 134, faces the rear end of the lower wall portion 120 of the cowl top garnish 110, and locks the rear end. As a result, the vicinity of the rear end of the shielding plate 130 becomes an L-shape including the parallel portion 134 and the locking portion 136.

According to the above configuration, the L-shape near the rear end of the shielding plate 130 allows the shielding plate 130 to be satisfactorily locked to the rear end of the lower wall portion 120. At this time, since a gap is provided between the locking portion 136 and the rear end of the lower wall portion 120, the lower wall portion 120 enters through the opening 110a as shown by an arrow in FIG. 3 (b). The rainwater that has flowed along the cowl front panel 104 can be discharged.

FIG. 5 is a diagram illustrating the behavior of the cowl top garnish 110 and the shielding plate 130 of the first embodiment when receiving a collision load. When a collision object (not shown) collides with the cowl top garnish 110 from above in the vehicle body front structure 100 shown in FIG. 3 (a), the cowl top garnish 110 absorbs the collision load as shown in FIG. 5 (a). While moving, the vehicle moves so as to rotate in the vehicle direction around the fixed portion with the front window 102. Then, the shielding plate 130 also moves so as to rotate rearward of the vehicle following the movement of the upper wall portion 112 of the cowl top garnish 110.

As described above, in the vehicle body front structure 100 of the first embodiment, the first fragile portion 140 is formed at the boundary between the lower wall portion 120 and the mounting portion 122 . As a result, when the mounting portion 122 of the cowl top garnish 110 receives a collision load, the first fragile portion 140 is broken and the fixed state with the cowl front panel 104 is released. Therefore, the load absorbing performance at the time of a collision can be suitably ensured without hindering the movement of the lower wall portion 120 toward the rear of the vehicle.

Further, in the vehicle body front structure 100 of the first embodiment, the upper portion of the shielding plate 130 is fixed to the rear end of the upper wall portion 112, and the lower portion of the shielding plate 130 is locked to the rear end of the lower wall portion. That is, the upper portion of the shielding plate 130 is fixed to the cowl top garnish 110 so as not to be detachable, and the lower portion is locked detachably from the cowl top garnish 110. Therefore, the cowl top garnish 110 further moves toward the vehicle, and the shielding plate 130 also moves to the rear of the vehicle, so that the locked state between the lower wall portion 120 and the shielding plate 130 is released.

After that, when the load is further absorbed, the cowl top garnish 110 and the shielding plate 130 move further to the rear of the vehicle from the position shown in FIG. 5A, and are in the state shown in FIG. 5B. At this time, since the lower wall portion 120 is fixed to the cowl front panel 104 and unlocked from the shielding plate 130, the lower wall portion 120 can smoothly move toward the rear of the vehicle, and the collision load is further increased. It can be suitably absorbed.

As described above, according to the vehicle body front structure 100 of the first embodiment, by closing the opening 110a of the cowl top garnish 110 with the shielding plate 130, it is preferable for rainwater, foreign matter, etc. to enter behind the opening 110a. Can be prevented. Then, when a collision load is applied, the first fragile portion 140 is broken to release the fixation with the cowl front panel 104, and the lock with the shielding plate 130 is released to the rear of the lower wall portion 120. Easy to move (deform) toward. Therefore, even when the shielding plate 130 is arranged, it is possible to secure good load absorption performance in the cowl top garnish 110.

(Second Example)
FIG. 6 is a cross-sectional view showing a second embodiment of the vehicle body front structure according to the present invention. 6 (a) is an enlarged view of the vicinity cowl top garnish 110, FIG. 6 (b) is an enlarged view of the vicinity of the rear end of the shield plate 230. Hereinafter, detailed description of the configuration and functions substantially the same as those of the vehicle body front structure 100 of the first embodiment will be omitted by adding the same reference numerals.

In the vehicle body front structure 200 of the second embodiment, as shown in FIGS. 6A and 6B, the shielding plate 230 is further bent from the locking portion 136 to form the lower wall portion 220 of the cowl top garnish 110. It has an extension 232 extending forward along the lower surface 220a. As a result, the rear end of the shielding plate 230 has a U shape including a parallel portion 134, a locking portion 136, and an extension portion 232. Therefore, the shielding plate 230 can be locked by the lower wall portion 220 in a stable state. Further, since the rear end of the shielding plate 230 may be U-shaped, processing such as providing a separate part for locking the shielding plate 230 to the lower wall portion 220 or providing a locking hole in the lower wall portion 220. Is unnecessary.

In the first embodiment, the configuration in which the rear end of the shielding plate 130 is L-shaped is illustrated, and in the second embodiment, the configuration in which the rear end of the shielding plate 230 is U-shaped is exemplified. , It is preferable that the rear end of the shielding plate is provided with these two shapes in the vehicle width direction. This is because both the effect of ensuring the drainage performance of the cowl top garnish 110 and the effect of stably locking the shielding plate to the lower wall portion 220 can be obtained.

Further, as a feature of the vehicle body front structure 200 of the second embodiment, the shielding plate 230 has a projecting portion 234 protruding forward toward the opening in addition to the shielding portion 132 and the parallel portion 134. As a result, when the vehicle moves toward the rear of the vehicle due to the collision load, the protrusion 234 is deformed in the vertical direction to absorb the collision load. Therefore, it is possible to further improve the load absorption performance of the vehicle body front structure 200.

Further, in the vehicle body front structure 200 of the second embodiment, the lower wall portion 220 of the cowl top garnish 110 is formed with a fragile stepped second fragile portion 240 at a position in front of the first fragile portion 140. There is. On the other hand, also in the shielding plate 230, a stepped shoulder portion 236 is formed between the parallel portion 134 and the protruding portion 234 at a position behind the second fragile portion 240. In the following description, for convenience, the portion of the lower wall portion 220 in front of the second vulnerable portion 240 is referred to as a front region 222, and the portion behind the second vulnerable portion is referred to as a rear region 224.

FIG. 7 is a diagram illustrating the behavior of the cowl top garnish 110 and the shielding plate 230 of the second embodiment when receiving a collision load. In the vehicle body front structure 200 shown in FIG. 6 (a), when an object to be collided (not shown) collides with the cowl top garnish 110 from above, the second vulnerable portion 240 is broken as shown in FIG. The front region 222 of the wall 220 moves rearward.

Then, the moved front region 222 abuts on the shoulder portion 236 of the shielding plate 230, so that a load is applied to the shielding plate 230 in the direction toward the rear of the vehicle. As a result, the movement of the shielding plate 130 to the rear of the vehicle is promoted, and the locking between the lower wall portion 220 and the shielding plate 230 can be released more reliably. Then, when a collision load is further applied, as shown in FIG. 7B, the first fragile portion 140 is subsequently broken as in the vehicle body front structure 100 of the first embodiment. As a result, the front region 222 can be smoothly moved backward.

As described above, according to the vehicle body front structure 200 of the second embodiment, by providing the protrusion 234 on the shielding plate 230, it is possible to absorb a larger collision load due to the deformation of the protrusion 234. .. Then, by providing the lower wall portion 220 with the second fragile portion 240, which is the second fragile portion, the second fragile portion 240 is broken by the collision load, and the front region 222 that has moved toward the rear of the vehicle is the shoulder portion. Collide with 236. As a result, the movement of the shielding plate 230 to the rear of the vehicle is promoted, and the locking between the lower wall portion 220 and the shielding plate 230 can be released more reliably.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the claims, which naturally belong to the technical scope of the present invention. Understood.

The present invention can be applied to a vehicle body front structure including a cowl top garnish and a shielding plate attached thereto.

100 ... front body structure, 102 ... front window, 102a ... lower edge, 104 ... cowl front panel, 106 ... dash panel, 108 ... cowl top panel, 108a ... outside air intake, 110 ... cowl top garnish, 110a ... opening, 112 ... upper wall part, 114 ... fixed part, 120 ... lower wall part, 120a ... lower surface, 122 ... mounting part, 130 ... shielding plate, 132 ... shielding part, 134 ... parallel part, 136 ... locking part, 140 ... th 1 Vulnerable part, 200 ... Front structure of vehicle body, 220 ... Lower wall part, 222 ... Front area, 224 ... Rear area, 230 ... Shielding plate, 232 ... Extension part, 234 ... Protruding part, 236 ... Shoulder part, 240 ... No. 2 Vulnerable part

Claims (5)

A front structure of the vehicle body including a cowl top garnish that is fixed to the front window of the vehicle and is also fixed to the cowl front panel that extends downward from a position below the front window to the rear dash panel. In
The body front structure is further
The opening formed in the cowl top garnish and
Includes a shield that closes the opening from the rear side of the cowl top garnish.
The cowl top garnish
An upper wall portion that is an upper portion of the opening and extends from the lower edge of the front window to the shielding plate, is fixed to the shielding plate, and further extends forward from the shielding plate.
A lower wall portion of the lower portion of the opening, which extends in the front-rear direction from the front end of the cowl front panel and is locked to the shielding plate at the rear end.
A vehicle body front structure characterized by having a mounting portion for mounting the lower wall portion to the tip of the cowl front panel and having a mounting portion provided with a fragile first fragile portion. The shielding plate is
A parallel portion extending along the upper surface of the lower wall portion of the cowl top garnish to the rear of the rear end of the lower wall portion,
The vehicle body front structure according to claim 1, further comprising a locking portion that bends from the parallel portion to face the rear end of the lower wall portion of the cowl top garnish and lock the rear end. The vehicle body front structure according to claim 2, wherein the shielding plate further has an extension portion that bends from the locking portion and extends forward along the lower surface of the lower wall portion of the cowl top garnish. The vehicle body front structure according to claim 2 or 3 , wherein the shielding plate further has a projecting portion projecting forward toward the opening. The cowl top garnish further has a fragile stepped second fragile portion formed on the lower wall portion in front of the first fragile portion.
The vehicle body front structure according to claim 4, wherein the shielding plate further has a stepped shoulder portion formed between the parallel portion and the protruding portion and located behind the second fragile portion. ..

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