JP2018069914A - Vehicle body front structure - Google Patents

Abstract

An object of the present invention is to provide a vehicle body front structure capable of maintaining good load absorbing performance of a cowl top garnish while suitably preventing foreign matter and rainwater from entering. A vehicle body front structure according to the present invention includes a cowl top garnish fixed to a front window and a cowl front panel; an opening formed in the cowl top garnish; An upper wall portion 112 including a shielding plate 130, the cowl top garnish being an upper portion of the opening, extending from a lower edge of the front window to the shielding plate, being fixed to the shielding plate, and extending further forward from the shielding plate; A lower wall portion 120 that is a lower portion of the opening and 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. And a first fragile portion 140. [Selection diagram] FIG.

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 includes an upright wall, and an outside air intake hole and an easily deformable portion are formed on the upright wall. Thereby, when a collision load from above is applied, the standing wall can be crushed and deformed around the easily deformable portion.

JP 2009-1216 A

  As disclosed in Patent Document 1, an outside air intake hole is formed in the cowl louver. From the outside air intake hole, not only outside air but also foreign matters such as pebbles and rain water (hereinafter referred to as rain water) may enter. For this reason, 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 a member disposed behind the outside air intake hole.

  As a method for preventing rainwater and the like from entering, it is conceivable to attach a member that shields the outside air intake hole. However, the rigidity of the cowl louver is increased at a location 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.

  The present invention has been made in view of such a problem, and an object of the present invention is 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 structure of a vehicle body front structure according to the present invention is a cowl that is fixed to a front window of a vehicle and extends while descending from a position below the front window to a rear dash panel. In the front structure of the vehicle body including a cowl top garnish elongated in the vehicle width direction, which is also fixed to the front panel, the vehicle body front structure further includes an opening formed in the cowl top garnish and a rear side of the cowl top garnish. A cowl top garnish is an upper part of the opening, and extends from the lower edge of the front window to the shielding plate, is fixed to the shielding plate, and extends further forward from the shielding plate. The lower part of the opening extends from the front end of the cowl front panel in the front-rear direction to the shielding plate at the rear end. A lower wall portion which is sealed, and having a first fragile portion for fixing the lower wall portion vulnerable to the tip of the cowl front panel.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle body front part structure which can maintain the favorable load absorption performance of a cowl top garnish can be provided, preventing invasion of a foreign material and rainwater suitably.

1 is an overall perspective view showing a first embodiment of a vehicle body front structure according to the present invention. FIG. 2 is an AA cross-sectional view of the vehicle body front part structure shown in FIG. 1. It is an expanded 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 shielding board of the 1st example at the time of receiving a collision load. It is sectional drawing which shows 2nd Example of the vehicle body front part structure concerning this invention. It is a figure explaining the behavior of the cowl top garnish and shielding board of the 2nd example at the time of receiving a collision load.

  A vehicle body front structure according to an embodiment of the present invention is fixed to a front window of a vehicle, and is also fixed to a cowl front panel extending while descending from a position below the front window to a rear dash panel. In the vehicle body front structure including a cowl top garnish that is 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 an upper part of the opening, which extends from the lower edge of the front window to the shielding plate, is fixed to the shielding plate and extends further forward from the shielding plate, and a lower part of the opening. A lower wall portion extending in the front-rear direction from the front end of the cowl front panel and locked to the shielding plate at the rear end, and a lower wall portion And having a first weak portion which vulnerable secured to the distal end of ur front panel.

  According to the above configuration, by closing the opening of the cowl top garnish with the shielding plate, it is possible to suitably prevent intrusion of rainwater, foreign matters, and the like to the rear of the opening. An outside air inlet is formed in the cowl top panel disposed above the cowl front panel or the dash panel disposed behind the cowl front panel, and the opening of the cowl top garnish is located in front of the outside air inlet. To position. Therefore, the shielding plate can prevent intrusion of rainwater and foreign matter from the outside air intake into the vehicle interior.

  On the other hand, the lower wall portion of the cowl top garnish is fragilely fixed to the cowl front panel by the first fragile portion, so that the first fragile portion breaks when receiving a collision load, 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 a good load absorbability can be obtained.

  In the above configuration, the shielding plate is fixed to the upper wall portion and locked to the lower wall portion. Thereby, when receiving a collision load, the shielding plate follows the movement of the upper wall portion and moves in the same direction. Then, when the shielding plate moves, 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 enhanced.

  The shielding plate faces the rear end of the lower wall portion of the cowl top garnish by bending from the parallel portion and extending to the rear side of the rear end of the lower wall portion along the upper surface of the lower wall portion of the cowl top garnish. And it is good to have the latching | locking part which latches a rear end. According to such a configuration, the shielding plate can be locked to the lower wall portion without providing another part for locking or forming a locking hole in the lower wall portion. Can do. In addition, it is possible to drain rainwater that has entered the opening of the cowl top garnish from between the rear end of the lower wall portion and the locking portion.

  The shielding plate may further include 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. Thereby, it will be in the state which the latching | locking part and the extension part were hooked on the rear end of the lower wall part reliably. Therefore, it is possible to stabilize the locked state of the lower wall portion and the shielding plate at the time of non-collision, that is, normal time.

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

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

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

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the examples are merely examples for facilitating 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 denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(First embodiment)
FIG. 1 is an overall perspective view showing a first embodiment of a 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 according to the first embodiment as viewed from the front, and FIG. 1B is a vehicle including the vehicle body front structure 100 according to the first embodiment. It is the perspective view which observed from the back. 2 is a cross-sectional view taken along line AA of the vehicle body front portion structure shown in FIG. 3 is an enlarged cross-sectional view, 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 part structure 100, a cowl front panel 104 is disposed below the front window 102. The cowl front panel 104 extends while descending from a position below the front window 102 to the rear dash panel 106. In the vehicle body front structure 100 according to this embodiment, the cowl top garnish 110 is fixed to the front window 102 at the upper part and fixed to the cowl front panel 104 at the lower part.

  FIG. 4 is a perspective view of the cowl top garnish 110. 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 FIG. 1A and FIG. 4A, the cowl top garnish 110 is a member that is long in the vehicle width direction.

  As shown in FIG. 2, the cowl top garnish 110 has an opening 110a. The shielding plate 130 is attached to the cowl top garnish 110 from the rear side of the vehicle as shown in FIGS. 2 and 4B, thereby closing (shielding) the opening 110a.

  As shown in FIG. 2, a cowl top panel 108 is disposed 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 inlet 108 a for taking in outside air. In the present embodiment, the configuration in which the cowl top panel 108 is provided with the outside air inlet 108a is illustrated, but the present invention is not limited to this, and the dash panel 106 may be provided with the outside air inlet. .

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

  As shown in FIG. 3A, the vehicle body front structure of the present 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 extends further forward from the shielding plate 130. A fixing part 114 to which the shielding plate 130 is fixed is provided on the back surface of the upper wall part 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. An attachment portion 122 that is an attachment location to the tip of the cowl front panel 104 is formed on the lower surface 120 a of the lower wall portion 120, and the first fragile portion 140 is formed at the boundary between the attachment portion 122 and the lower wall portion 120. Is provided. Thereby, the lower wall part 120 is weakly fixed to the tip of the cowl front panel 104.

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

  The shielding plate 130 may be provided with a locking portion 136 that is bent from the parallel portion 134 and faces the rear end of the lower wall portion 120 of the cowl top garnish 110 to lock the rear end. As a result, the vicinity of the rear end of the shielding plate 130 has an L shape including the parallel portion 134 and the locking portion 136.

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

  FIG. 5 is a diagram for explaining 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. 3A, the cowl top garnish 110 absorbs the collision load as shown in FIG. 5A. On the other hand, the vehicle moves so as to rotate in the vehicle direction around the fixed position with the front window 102. The shielding plate 130 also moves to follow the movement of the upper wall portion 112 of the cowl top garnish 110 and rotate rearward of the vehicle.

  As described above, in the vehicle body front structure 100 according to the first embodiment, the first fragile portion 140 is formed at the boundary between the lower wall portion 120 and the lower fixing portion 114. Accordingly, when the lower fixing portion 114 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 absorption performance at the time of collision can be suitably ensured without hindering the movement of the lower wall portion 120 toward the rear of the vehicle.

  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 part of the shielding plate 130 is fixed to the cowl top garnish 110 so as not to be detached, and the lower part is locked so as to be detached from the cowl top garnish 110. Therefore, the cowl top garnish 110 is further moved toward the vehicle, and the shielding plate 130 is also moved to the rear of the vehicle, whereby the locked state between the lower wall portion 120 and the shielding plate 130 is released.

  Thereafter, when the load is further absorbed, the cowl top garnish 110 and the shielding plate 130 are moved further rearward from the position shown in FIG. 5A, and the state shown in FIG. 5B is obtained. At this time, the lower wall portion 120 can move smoothly toward the rear of the vehicle by releasing the fixation with the cowl front panel 104 and the locking with the shielding plate 130, and thus the collision load can be further increased. It becomes possible to absorb suitably.

  As described above, according to the vehicle body front part structure 100 of the first embodiment, the opening 110a of the cowl top garnish 110 is closed by the shielding plate 130, so that intrusion of rainwater, foreign matter, or the like behind the opening 110a is preferable. Can be prevented. When the collision load is received, the first weakened portion 140 is broken and the fixation with the cowl front panel 104 is released, and the engagement with the shielding plate 130 is released, so that the rear wall portion 120 is rearward. Easy to move (deform). Therefore, even when the shielding plate 130 is disposed, it is possible to ensure good load absorption performance in the cowl top garnish 110.

(Second embodiment)
FIG. 6 is a cross-sectional view showing a second embodiment of the vehicle body front structure according to the present invention. 6A 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 230. FIG. In the following description, substantially the same configuration and function as those of the vehicle body front structure 100 of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  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. An extension 232 extending forward along the lower surface 220a is provided. Accordingly, the rear end of the shielding plate 230 has a U shape including the parallel part 134, the locking part 136, and the extension part 232. Therefore, the shielding plate 230 can be locked in a stable state by the lower wall portion 220. Further, since the rear end of the shielding plate 230 only needs to be U-shaped, other parts for locking the shielding plate 230 to the lower wall portion 220, processing such as providing a locking hole in the lower wall portion 220, etc. 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 illustrated. The rear end of the shielding plate is preferably provided with these two shapes in the vehicle width direction. This is because both the above-described 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 part 220 are obtained.

  Further, as a feature of the vehicle body front part structure 200 of the second embodiment, the shielding plate 230 has a protruding portion 234 that protrudes forward toward the opening in addition to the shielding portion 132 and the parallel portion 134. Thereby, when moving 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, the load absorption performance in the vehicle body front part structure 200 can be further enhanced.

  Further, in the vehicle body front part structure 200 of the second embodiment, a step-shaped second weakened portion 240 that is weak at a position ahead of the first weakened portion 140 is formed on the lower wall portion 220 of the cowl top garnish 110. Yes. On the other hand, in the shielding plate 230, a stepped shoulder 236 is formed between the parallel portion 134 and the protruding portion 234 and at a position behind the second fragile portion 240. In the following description, for the sake of convenience, a portion of the lower wall portion 220 that is in front of the second fragile portion 240 is referred to as a front region 222 and a portion that is behind the second fragile portion is referred to as a rear region 224.

  FIG. 7 is a diagram for explaining 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 100 shown in FIG. 6A, when a collision target (not shown) collides with the cowl top garnish 110 from above, the second fragile portion 240 is broken as shown in FIG. The front area 222 of the wall 220 moves rearward.

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

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

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

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

DESCRIPTION OF SYMBOLS 100 ... Car body front 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, DESCRIPTION OF SYMBOLS 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 ... First DESCRIPTION OF SYMBOLS 1 Fragile part, 200 ... Car body front part structure, 220 ... Lower wall part, 222 ... Front area, 224 ... Rear area, 230 ... Shielding board, 232 ... Extension part, 234 ... Projection part, 236 ... Shoulder part, 240 ... First 2 vulnerable parts

Claims (5)

A vehicle body front structure including a cowl top garnish that is fixed to a vehicle front window and is also fixed to a cowl front panel that extends while descending from a position below the front window to a rear dash panel. In
The vehicle body front structure is further
An opening formed in the cowl top garnish;
A shielding plate that closes the opening from the rear side of the cowl top garnish,
The cowl top garnish is
An upper portion of the opening, the upper wall extending from the lower edge of the front window to the shielding plate, fixed to the shielding plate, and extending further forward from the shielding plate;
A lower portion of the opening that 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 part structure comprising a first fragile portion for fragilely fixing the lower wall portion to a tip of the cowl front panel. The shielding plate is
A parallel portion extending rearwardly from the rear end of the lower wall portion along the upper surface of the lower wall portion of the cowl top garnish;
The vehicle body front part structure according to claim 1, further comprising a locking portion that is bent from the parallel portion and faces a rear end of a lower wall portion of the cowl top garnish to lock the rear end.   The vehicle body front structure according to claim 2, wherein the shielding plate further includes an extension portion that is bent 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 part structure according to any one of claims 1 to 3, wherein the shielding plate further includes a protruding portion protruding forward toward the opening. The cowl top garnish further has a fragile stepped second fragile portion formed in the lower wall portion in front of the first fragile portion,
5. The vehicle body front structure according to claim 4, wherein the shielding plate further includes a stepped shoulder portion formed between the parallel portion and the projecting portion and positioned behind the second fragile portion. .

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