JP6610119B2 - Cowl top garnish structure - Google Patents

Description

  The present invention relates to a cowl top garnish structure disposed in a front portion of a vehicle.

  In general, a vehicle such as an automobile has an engine room disposed at the front of the vehicle. The opening at the top of the vehicle in the engine room is covered with a front hood panel or the like. A highly rigid vehicle body structure, vehicle-mounted components, and the like are arranged below the front hood panel. A cowl top panel, a cowl front panel, a cowl upper panel, and the like are arranged in the cowl portion between the front hood panel and the windshield. Garnish is arranged. The cowl top garnish or the like is provided with an intake port for introducing outside air into the vehicle interior.

  When the vehicle is traveling, if a load acts on the front hood panel from the upper side of the vehicle due to a collision with an obstacle and the vehicle, the front hood panel may bend downward. That is, at the time of a collision, the obstacle may ride on the front hood panel, and the front hood panel may be bent downward in the vehicle due to an impact at the time of the collision. At this time, there is a possibility that the obstacle strongly collides with the vehicle-mounted component while bending the front hood panel. On the other hand, from the viewpoint of protecting the pedestrian head, a structure that reduces the impact as described above is required.

  As one of the methods for solving this problem, a technique is known in which a structure capable of mitigating an impact from an obstacle is provided on a cowl top garnish or the like in order to suppress the strong collision as described above. As an example, a technique related to the structure of a cowl top garnish as disclosed in Patent Document 1 is known. In this example, a vertical wall member is attached to the end portion of the cowl top garnish so that the vertical wall member is detached when subjected to an impact. The impact is mitigated by the vertical wall member coming off.

Japanese Patent Laying-Open No. 2015-85858

  However, as in the above example, if the vertical wall portion at the end of the cowl top garnish is a separate member and is detached by impact, the structure of the cowl top garnish becomes complicated and the number of parts also increases.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a cowl top garnish structure having a simple structure and capable of stepwise impact relaxation.

In order to achieve the above object, a cowl top garnish structure according to the present invention has a cowl top garnish disposed above a dash panel at the front of the vehicle, and protrudes forward of the vehicle at the front of the cowl top garnish. A first surface portion extending horizontally in the vehicle width direction is provided, and both first and second outer portions of the first surface portion are provided with first vertical walls protruding upward in the vehicle and extending in the vehicle front-rear direction. A second wall portion that protrudes outward in the vehicle width direction and extends along the vehicle front-rear direction is provided at the vehicle lower portion of the vertical wall, and a second surface portion that extends downward in the vehicle width direction is provided on the vehicle width direction outer portion of the second surface portion. A vertical wall is provided, and a third surface portion that protrudes outward in the vehicle width direction and extends in the vehicle front-rear direction is provided at the vehicle lower portion of the second vertical wall. In the cowl top garnish structure, an upper fragile portion is provided at a part of a first corner formed by the vehicle lower portion of the first vertical wall and the second surface portion, and the vehicle of the second vertical wall A lower fragile portion is provided in a part of the second corner formed by the lower portion and the third surface portion. The vehicle front portion of the second vertical wall is provided with a third vertical wall extending in the vehicle width direction, and the upper fragile portion includes the vehicle front portion of the second vertical wall and the third vertical wall. It extends to the vehicle upper portion of the third corner portion formed by the vehicle width direction outer side portion, and the lower fragile portion extends to the vehicle lower portion of the third corner portion.

  In one aspect of the cowl top garnish structure according to the present invention, the upper fragile portion has at least one upper slit extending in a ridge line direction of the first corner portion, and the lower fragile portion is It has at least one lower slit extending in the ridgeline direction of the second corner, and the third corner extends in the ridgeline direction of the third corner and the second vertical wall and the It has the 1st thin part currently formed more thinly than the thickness of the 3rd vertical wall.

  Further, in one aspect of the cowl top garnish structure according to the present invention, the second corner portion extends in a ridge line direction of the second corner portion and is thicker than the thickness of the second vertical wall and the third surface portion. It has the 2nd thin part formed thinly, and the said 2nd thin part is arrange | positioned at the vehicle rear of the said lower side slit.

  In the aspect of the cowl top garnish structure according to the present invention, a fourth surface portion that protrudes forward of the vehicle and extends in the vehicle width direction is provided at the vehicle lower portion of the third vertical wall, and the third vertical wall The fourth corner formed by the lower portion of the vehicle and the fourth surface portion extends in the ridge line direction of the fourth corner and is thinner than the thickness of the third vertical wall and the fourth surface portion. It has the 3rd thin part formed in.

  According to the present invention, since the upper fragile portion and the lower fragile portion are disposed, when an impact generated when an object collides with the vehicle is transmitted to the cowl top garnish, the cowl top garnish is moved from the upper portion of the vehicle to the lower portion. It becomes possible to make it break in steps toward. As a result, it is possible to mitigate the impact when the vehicle collides with an object. Furthermore, even when the pedestrian and the vehicle collide, it is possible to mitigate the impact on the pedestrian.

Further, according to this onset bright, above and below the third corner portion formed by the second vertical wall and a third vertical wall, since the upper weak portion and the lower weak portion is connected, the shock due to the collision, First, the first corner portion breaks from the upper fragile portion as a starting point, then propagates to the second corner portion, and further to the lower fragile portion. As a result, it is possible to effectively absorb the impact from the upper part of the vehicle toward the lower part.

  In addition, according to one aspect of the present invention, at least part of the fragile portion is formed as a slit, so that breakage of the fragile portion is further promoted. As a result, the impact absorbing effect is enhanced.

  In addition, according to the aspect of the present invention, the slit and the thin portion are arranged in the second corner portion at the front and rear of the vehicle, thereby ensuring the rigidity of the cowl top garnish during normal use and reducing the impact at the time of collision. It can be promoted more.

  In addition, according to the aspect of the present invention, the break transmitted from the third corner can be transmitted to the inner side in the vehicle width direction, so that the impact is distributed in two directions, the rear of the vehicle and the inner side in the vehicle width direction. And the impact mitigating effect can be improved.

It is the schematic perspective view which looked at the cowl part provided with the cowl top garnish structure of one embodiment concerning the present invention from the vehicles front. It is a disassembled perspective view which shows the state before the cowl top garnish of FIG. 1 is attached. It is an expansion perspective view which expands and shows the A section of the cowl top garnish of FIG. FIG. 2 is a perspective view schematically showing a state in which a mass body collides with the cowl top garnish of FIG. 1, wherein (a) shows a state immediately after the collision of the mass body in the vicinity of the first corner, and (b) The state where the fracture starts from the lower slit of the second corner is shown, and (c) shows the state where the second corner, the third corner and the fourth corner are broken.

  Hereinafter, an embodiment of a cowl top garnish structure according to the present invention will be described with reference to the drawings (FIGS. 1 to 4). The cowl top garnish 1 of the present embodiment is disposed in a cowl portion between a front hood panel and a windshield (both not shown). The front hood panel is a panel that closes the opening of the upper part of the vehicle in an engine room (not shown) disposed in the front of the vehicle. Although illustration is omitted, a highly rigid vehicle body structure, vehicle-mounted components, and the like are disposed below the front hood panel in the vehicle.

  First, an outline of the entire configuration of the cowl portion will be described. As shown in FIG.1 and FIG.2, the cowl part of this embodiment is arrange | positioned above the vehicle of the dash panel 41 between a front hood panel and a windshield. The dash panel 41 is a panel that partitions the vehicle compartment (not shown) from the engine room. Dash side panels 42 are attached to both sides of the dash panel 41 in the vehicle width direction so as to form a pair.

  As shown in FIG. 2, the cowl portion includes a cowl front panel 43, a cowl upper panel 44, a cowl top panel 45, a cowl top garnish 1, and the like. The cowl upper panel 44 is disposed between the pair of dash side panels 42 on the upper part of the dash panel 41 in the vehicle. The cowl front panel 43 is a long member extending in the vehicle width direction, and is attached to the vehicle front portion of the cowl upper panel 44. The cowl top panel 45 is one of the members constituting the outermost part of the cowl part, and is attached to the upper part of the cowl upper panel 44 in the vehicle.

  As shown in FIG. 1, the cowl top garnish 1 is disposed in front of the cowl top panel 45 and at the upper part of the cowl upper panel 44, and covers the cowl upper panel 44 and the cowl front panel 43 from above the vehicle. Yes. The cowl top garnish 1 is a member extending in the vehicle width direction, and the body portion 1a of the cowl top garnish 1 is provided with an intake port for introducing outside air into the vehicle interior.

  Details of the cowl top garnish 1 will be described below. As shown in FIG. 3, the cowl top garnish 1 is provided with a plate-like first surface portion 2 that protrudes forward from the vehicle front portion of the main body portion 1 a and extends horizontally in the vehicle width direction. On both outer side portions of the first surface portion 2 in the vehicle width direction, a first vertical wall 3 is provided in a pair of left and right. As shown in FIG. 3, the first vertical wall 3 protrudes above the vehicle upper surface of the first surface portion 2 and extends from the outer portion of the first surface portion 2 in the vehicle rearward direction. Moreover, the 1st vertical wall 3 is a plate-shaped side wall extended in the vehicle front from the main-body part 1a. 3 shows the first vertical wall 3 on the right side in FIG. 2, the details are omitted, but the first side similar to the first vertical wall 3 shown in FIG. 3 is also shown on the left side. A vertical wall is provided.

  Further, as shown in FIG. 3, a second surface portion 4 is provided at the vehicle lower portion of the first vertical wall 3. The 2nd surface part 4 protrudes in the vehicle width direction outer side from the vehicle lower end of the 1st vertical wall 3, and is extended along the vehicle front-back direction. The length of the second surface portion 4 in the vehicle front-rear direction is formed so as to substantially correspond to the length of the first vertical wall 3 at the vehicle lower portion in the vehicle front-rear direction.

  The vehicle upper surface of the second surface portion 4 is curved so that the vicinity of the center in the vehicle front-rear direction is convex upward of the vehicle. Further, the width in the vehicle width direction of the vehicle upper surface of the second surface portion 4 is formed such that the front portion of the vehicle is smaller than the rear portion of the vehicle.

  A second vertical wall 5 extending downward in the vehicle is provided on the outer side of the second surface portion 4 in the vehicle width direction. The second vertical wall 5 is disposed outside the first vertical wall 3 in the vehicle width direction with the second surface portion 4 interposed. In this example, the 1st vertical wall 3 and the 2nd vertical wall 5 are the structures connected by the 2nd surface part 4, and the 2nd surface part 4 is comprised by the staircase shape used as a level | step difference in a vehicle width direction. . The second vertical wall 5 constitutes the outermost side wall in the vehicle width direction of the main body 1a. The vehicle front portion of the second vertical wall 5 is curved inward in the vehicle width direction toward the front of the vehicle.

  A third surface portion 6 is provided at the vehicle lower portion of the second vertical wall 5. The 3rd surface part 6 is the plate shape projected on the vehicle width direction outer side from the vehicle lower end of the 2nd vertical wall 5, and is extended in the vehicle front-back direction. The third surface portion 6 is provided in substantially the entire vehicle longitudinal direction at the vehicle lower end of the second vertical wall 5, and is formed along the curved portion of the second vertical wall 5 in the vehicle front portion. Yes. Moreover, the 3rd surface part 6 inclines below a vehicle as it goes to the vehicle front. The vehicle lower surface of the third surface portion 6 is attached to the inclined surface of the upper portion of the dash side panel 42 on the vehicle. An attachment hole 6 a for attaching to the dash side panel 42 is formed in the vehicle front portion of the third surface portion 6.

  A third vertical wall 7 is provided at the vehicle front portion of the second vertical wall 5. The third vertical wall 7 extends in the vehicle width direction and is disposed below the first surface portion 2 in the vehicle. The third vertical wall 7 extends inward in the vehicle width direction from the vehicle front end of the curved portion of the vehicle front portion of the second vertical wall 5. A fourth surface portion 8 is provided at the vehicle lower portion of the third vertical wall 7. The fourth surface portion 8 is a plate-like shape protruding from the vehicle lower end of the third vertical wall 7 toward the front of the vehicle, extends in the vehicle width direction, and connects the left and right second vertical walls 5. The vehicle lower surface of the fourth surface portion 8 is attached to the vehicle upper portion of the cowl front panel 43.

  As described above, FIG. 3 shows the first vertical wall 3, the second vertical wall 5, the second surface portion 4, and the third surface portion 6 on the left side in FIG. The walls 5 are provided on both the left and right sides of the main body 1a, and the second surface 4 and the third surface 6 are also provided on the left and right sides of the main body 1a.

  The cowl top garnish 1 of the present embodiment is provided with a plurality of weak parts. Hereinafter, the vulnerable part will be described.

  As shown in FIG. 3, the first corner 21 formed by the vehicle lower portion of the first vertical wall 3 and the inner side in the vehicle width direction of the second surface portion 4 includes three upper slits (upper fragile portions) 22, 22a. The upper slits 22 and 22a are arranged on the ridge line of the first corner portion 21 with a space between each other, and each extends in the ridge line direction.

  The second corner portion 23 formed by the vehicle lower portion of the second vertical wall 5 and the inner side in the vehicle width direction of the third surface portion 6 has a lower slit (lower fragile portion) 24. In this example, the lower slit 24 is disposed on the curved ridge line of the vehicle front portion of the second corner 23 and is formed to correspond to the shape of the curved ridge line.

  Upper slits 22 and 22a that are more fragile (lower strength) than other parts are formed in the upper portion of the vehicle of the second vertical wall 5 that is strong, and lower slits 24 that are fragile are formed in the lower portion of the vehicle of the second vertical wall 5 Thus, when an impact generated when an object collides with the vehicle is transmitted to the cowl top garnish 1, the cowl top garnish 1 can be broken stepwise from the upper part to the lower part of the second vertical wall 5. It becomes. That is, since the fragile portion is arranged at an interval in the vertical direction of the vehicle through the strong vertical wall, the impact when the vehicle collides with the object is transmitted to the cowl top garnish 1 step by step. Impact can be mitigated.

  For example, in the structure of the present embodiment, as shown in FIG. 4A, when a mass body 47 schematically shown by a partial arc collides with a vehicle and the mass body 47 collides with the cowl top garnish 1, Due to the impact of time, first, the first corner 21 can be broken starting from the upper slits 22 and 22a. Thereafter, as shown in FIG. 4B, the second corner portion 23 can be broken starting from the lower slit 24. Such a structure that can reduce the impact can also reduce the impact on the pedestrian when the pedestrian and the vehicle collide. Therefore, the cowl top garnish structure of the present embodiment can effectively reduce the impact from the viewpoint of protecting the pedestrian head.

  Next, the structure of the cowl top garnish 1 will be described. A third corner 25 is formed by the vehicle front portion of the second vertical wall 5 and the vehicle width direction outer side portion of the third vertical wall 7. Of the three upper slits 22, 22 a, the uppermost slit 22 a on the front side of the vehicle extends so as to be connected to the vehicle upper portion of the third corner portion 25. The lower slit 24 is formed so as to be connected to the vehicle lower portion of the third corner portion 25.

  Since the slits 22a and 24 are connected to the upper and lower parts of the third corner 25 extending in the vertical direction of the vehicle, the breakage of the first corner 21 generated from the upper slits 22 and 22a as a starting point due to the impact described above. Then, it is transmitted to the third corner 25, and then can be effectively transmitted to the lower slit 24 of the second corner 23. That is, it is possible to further improve the above-described effect of gradually mitigating the impact from the upper part of the cowl top garnish 1 toward the lower part.

  As shown in FIG. 3, the third corner portion 25 has a first thin portion 27. The first thin portion 27 is formed thinner than the thickness of the second vertical wall 5 and the third vertical wall 7, and extends along the ridgeline of the third corner portion 25. The first thin wall 27 is a portion indicated by a broken line on the ridge line of the third corner portion 25 in FIG. 3, and is disposed in the central region of the third corner portion 25 in the vehicle vertical direction. Thereby, after the breakage of the first corner portion 21, the load due to the impact easily propagates to the third corner portion 25. Furthermore, the impact transmitted to the third corner 25 can be efficiently transmitted to the lower slit 24. For example, as shown in FIG. 4B, it is possible to propagate to the first thin portion 27 and easily break the second corner portion 23 starting from the lower slit 24.

  The second corner portion 23 has a second thin portion 28. The second thin portion 28 is formed thinner than the thickness of the second vertical wall 5 and the third surface portion 6, and extends in the ridge line direction of the second corner portion 23. The second thin portion 28 is a portion indicated by a broken line on the ridge line of the second corner portion 23 in FIG. 3. The second thin portion 28 is spaced apart in the vehicle front-rear direction behind the lower slit 24 in the second corner portion 23. It is arranged in the space. In this example, the portion between the second thin portion 28 and the lower slit 24 is a portion thicker than the second thin portion 28.

  By disposing the lower slit 24 and the second thin portion 28 at the front and rear of the vehicle at the second corner 23, the breakage of the second corner 23 that occurs from the lower slit 24 as a starting point is more effectively promoted. It becomes possible. For example, as shown in FIG. 4 (c), the breakage of the second corner portion 23 occurs from the lower slit 24, and then the breakage of the second corner portion 23 is effectively promoted by the second thin portion 28. Can be made. As described above, it is possible to further promote the impact relaxation at the time of collision while ensuring the rigidity of the cowl top garnish 1 during normal use.

  As shown in FIG. 3, a fourth corner portion 26 is formed by the vehicle lower portion of the third vertical wall 7 and the vehicle rear portion of the fourth surface portion 8. The fourth corner portion 26 has a third thin portion 29. The third thin portion 29 is formed thinner than the thickness of the third vertical wall 7 and the fourth surface portion 8, and extends in the ridge line direction of the fourth corner portion 26. The third thin portion 29 is a portion indicated by a broken line on the ridge line of the fourth corner portion 26 in FIG. 3 and extends from the vehicle lower portion of the third corner portion 25 toward the inside in the vehicle width direction. For example, as shown in FIG. 4C, the break propagated through the third corner portion 25 can be easily transmitted to the fourth corner portion 26. That is, since the break transmitted from the third corner portion 25 can be effectively transmitted also in the vehicle width direction, the impact relaxation effect can be improved. That is, the break transmitted from the third corner portion 25 can be effectively transmitted not only to the second corner portion 23 at the rear of the vehicle but also to the inner side in the vehicle width direction. The impact mitigating effect can be improved.

  As can be seen from the above description, by using the cowl top garnish structure of the present embodiment, the impact applied to the upper part of the cowl top garnish 1 can be gradually reduced from the upper part to the lower part of the cowl top garnish 1. It becomes possible.

  The description of the above embodiment is an example for explaining the present invention, and does not limit the invention described in the claims. Moreover, each part structure of this invention is not restricted to the said embodiment, A various deformation | transformation is possible within the technical scope as described in a claim.

  In the above embodiment, both the upper fragile portion and the lower fragile portion are slits, but the present invention is not limited to this. The fragile portion may be a thin portion, for example. Moreover, you may mix a slit and a thin part. Moreover, a weak part can also be comprised by providing several through-round holes at intervals.

DESCRIPTION OF SYMBOLS 1 Cowl top garnish 1a Main-body part 2 1st surface part 3 1st vertical wall 4 2nd surface part 5 2nd vertical wall 6 3rd surface part 6a Attachment hole 7 3rd vertical wall 8 4th surface part 21 1st corner | angular part 22 Upper slit (Upper vulnerable part)
22a Upper slit on the vehicle front side (upper fragile part)
23 Second corner 24 Lower slit (lower fragile part)
25 Third corner portion 26 Fourth corner portion 27 First thin portion 28 Second thin portion 29 Third thin portion 41 Dash panel 42 Dash side panel 43 Cowl front panel 44 Cowl upper panel 45 Cowl top panel 47 Mass body

Claims (4)

A cowl top garnish is arranged above the vehicle in the dash panel at the front of the vehicle,
The front portion of the cowl top garnish is provided with a first surface portion that protrudes forward of the vehicle and extends horizontally in the vehicle width direction. A first vertical wall extending in the front-rear direction is provided;
A second surface portion that protrudes outward in the vehicle width direction and extends along the vehicle front-rear direction is provided at the vehicle lower portion of the first vertical wall. A second vertical wall is provided,
In the cowl top garnish structure provided at the vehicle lower portion of the second vertical wall, a third surface portion that protrudes outward in the vehicle width direction and extends in the vehicle front-rear direction,
An upper weakened portion is provided in a part of the first corner formed by the vehicle lower portion of the first vertical wall and the second surface portion,
Wherein a portion of the second corner portion formed at a vehicle lower portion of the second vertical wall and said third surface portion, the lower weak portion is provided et al is,
A vehicle front portion of the second vertical wall is provided with a third vertical wall extending in the vehicle width direction,
The upper fragile portion extends to a vehicle upper portion of a third corner formed by a vehicle front portion of the second vertical wall and an outer portion in the vehicle width direction of the third vertical wall,
The cowl top garnish structure , wherein the lower fragile portion extends to a vehicle lower portion of the third corner portion . The upper fragile portion has at least one upper slit extending in a ridge line direction of the first corner portion, and the lower fragile portion is at least one lower portion extending in a ridge line direction of the second corner portion. Have side slits,
The third corner portion includes a first thin portion that extends in a ridge line direction of the third corner portion and is formed to be thinner than a thickness of the second vertical wall and the third vertical wall. cowl top garnish structure according to claim 1, characterized in that there. The second corner portion has a second thin portion that extends in the ridge line direction of the second corner portion and is thinner than the thickness of the second vertical wall and the third surface portion. ,
3. The cowl top garnish structure according to claim 2, wherein the second thin portion is disposed on the vehicle rear side of the lower slit . A fourth surface portion that protrudes forward of the vehicle and extends in the vehicle width direction is provided at the vehicle lower portion of the third vertical wall,
A fourth corner portion formed by the vehicle lower portion of the third vertical wall and the fourth surface portion extends in the ridge line direction of the fourth corner portion, and extends between the third vertical wall and the fourth surface portion. The cowl top garnish structure according to claim 3, wherein the cowl top garnish structure has a third thin portion that is thinner than a thickness .

Images