JP4872633B2 - Cowl louva - Google Patents

Description

  The present invention relates to a cowl louver, and more particularly, to a cowl louver provided between a windshield glass and a hood of an automobile.

2. Description of the Related Art Conventionally, a cowl louver provided between a windshield glass and a hood of an automobile is known (for example, see Patent Document 1). In this technique, the vertical panel of the cowl box located below the rear end of the engine hood serves as an energy absorbing portion, and a plurality of elongated holes are formed in parallel in the vehicle width direction in the energy absorbing portion.
Japanese Patent Laid-Open No. 5-8763

  However, in the technique of Patent Document 1, the direction of the plurality of long holes formed in the energy absorbing portion is a vertically long shape. Therefore, when a load is applied from the upper side of the vehicle to the lower side of the vehicle, in order to easily deform the energy absorption unit and increase the energy absorption amount of the energy absorption unit, the energy absorption unit is bent toward the front of the vehicle. Measures such as manufacturing are necessary, and the shape of the cowl louver becomes complicated.

  In view of the above facts, an object of the present invention is to provide a cowl louver that can increase the amount of energy absorption when a load acts from the upper side of the vehicle to the lower side of the vehicle.

The present invention according to claim 1 is a cowl louver provided between a windshield glass and a hood positioned in front of the windshield glass, and a fixed part fixed to the cowl , and the cowl from the fixed part. And a plurality of long holes whose longitudinal direction is inclined in the vehicle width direction with respect to the vehicle vertical direction, and when the compressive load in the vehicle vertical direction is applied, the length is increased. And a vertical wall portion that deforms in the vehicle width direction starting from the hole.

When a collision load is applied to the vertical wall portion extending above the vehicle that is separated from the cowl from the fixed portion of the cowl louver to the cowl , the vertical wall portion of the cowl louver is A plurality of long holes formed in the wall are deformed from the starting point. At this time, since the longitudinal direction of each long hole is inclined in the vehicle width direction with respect to the vehicle vertical direction, the vertical wall portion is deformed in the vehicle width direction by each long hole. As a result, the vertical wall portion easily deforms without stretching against the compressive load in the vertical direction of the vehicle, and the energy absorption amount increases.

  According to a second aspect of the present invention, in the cowl louver according to the first aspect, the long hole formed in the vertical wall portion is linear, and is bent at the center in the vertical direction.

  Since the long hole formed in the vertical wall portion is linear and is bent at the center in the vertical direction, the vertical wall portion is deformed in the vehicle width direction starting from the vertical center of each long hole. As a result, the amount of deformation on the upper side and the amount of deformation on the lower side of the long hole become equal, so that the vertical wall portion is efficiently deformed.

  According to a third aspect of the present invention, in the cowl louver according to the first aspect, the long hole formed in the vertical wall portion is linear, and is inclined in the vehicle width direction with respect to the vehicle vertical direction. Features.

  The long holes formed in the vertical wall are straight and are inclined in the vehicle width direction with respect to the vehicle vertical direction. Therefore, the vertical wall is deformed in the vehicle width direction by falling in the inclination direction of each long hole. To do. As a result, the amount of energy absorption increases with a simple long hole shape.

  According to a fourth aspect of the present invention, in the cowl louver according to the first aspect, the long hole formed in the vertical wall portion has an arc shape, and the center in the vertical direction is convex in the vehicle width direction. .

  Since the long hole formed in the vertical wall portion has an arc shape and the center in the vertical direction is convex in the vehicle width direction, the vertical wall portion is deformed in the vehicle width direction starting from the center in the vertical direction of each long hole. As a result, the amount of deformation on the upper side and the amount of deformation on the lower side of the long hole become equal, and the vertical wall portion is efficiently deformed.

  The present invention according to claim 1 can increase the amount of energy absorbed when a load acts from the upper side of the vehicle toward the lower side of the vehicle.

  According to the second aspect of the present invention, the vertical wall portion can be efficiently deformed.

  According to the third aspect of the present invention, the amount of energy absorption can be increased with a simple long hole shape.

  According to the fourth aspect of the present invention, the vertical wall portion can be efficiently deformed.

  1st Embodiment of the cowl louver in this invention is described according to FIGS.

  In the figure, the arrow UP indicates the vehicle upward direction, the arrow FR in the figure indicates the vehicle forward direction, and the arrow IN in the figure indicates the vehicle width inside direction.

  FIG. 5 is a perspective view of a vehicle to which the cowl louver according to the present embodiment is applied as seen from the front side of the vehicle.

  As shown in FIG. 5, a rear end portion 12 </ b> A of the hood (engine hood) 12 constituting the upper surface of the front portion of the vehicle (automobile) 10 in the present embodiment extends above the cowl louver 14.

  FIG. 2 is a cross-sectional view taken along the line 2-2 in FIG.

  As shown in FIG. 2, the hood 12 includes an inner panel 18 on the inner side (back side) of the outer panel 16, and the rear portion of the hood 12 is closed by the outer panel 16 and the inner panel 18 along the vehicle width direction. A cross section 20 is formed. Further, the rear portion 22 of the inner panel 18 constituting the closed cross section 20 has an inverted trapezoidal shape that opens upward in the vehicle body in a side view, and from the rear end portion 12A of the hood 12 in the closed position (position in FIG. 2). A bent portion 22A is formed along the vehicle width direction at a portion ahead of the predetermined distance. Further, the rear end portion 16A of the outer panel 16 and the rear end portion 18A of the inner panel 18 are joined by hemming on the vehicle body rear side of the bent portion 22A in the rear portion 22 of the inner panel 18.

  The lower part 24A of the windshield glass 24 is fixed to the upper surface of the upper wall part 26B extending from the upper end of the rear wall part 26A of the cowl 26 to the vehicle front side by an adhesive 27. A flange 26D is formed at the upper end of the front wall portion 26C of the cowl 26 toward the front of the vehicle, and the cowl louver 14 is installed between the flange 26D and the lower edge 24B of the windshield glass 24. .

  The front side fixing portion 14A of the cowl louver 14 is attached to the upper surface of the flange 26D of the cowl 26 by means of attachment members such as a plurality of clips (not shown). On the other hand, the rear fixing portion 14B of the cowl louver 14 is attached to the lower end edge portion 24B of the windshield glass 24 by attachment members such as a plurality of clips (not shown).

  A seal portion 28 extends from the front end of the front fixing portion 14A of the cowl louver 14 toward the front of the vehicle, and is between the front end portion 28A of the seal portion 28 and the bottom portion 22C of the closed cross section 20 of the hood 12. A cowl seal rubber 30 is disposed on the side.

From the rear side portion of the front fixing portion 14A of the cowl louver 14, a vertical wall portion 14C extends toward the rear end portion 12A of the hood 12 and extends upward from the vehicle away from the cowl 26, and the vertical wall portion 14C. Is located below the hood 12. An upper wall portion 14D is formed from the upper end of the vertical wall portion 14C toward the rear of the vehicle, and the upper wall portion 14D faces the rear end portion 12A of the hood 12 with a predetermined interval.

  As shown by a two-dot chain line in FIG. 2, there is a mounting part 42 such as a battery or an engine in the engine room 40 of the vehicle, and the front wall of the cowl 26 depends on the mounting position of the mounting part 42 in the vehicle width direction. The positions of the portion 26C and the vertical wall portion 14C of the cowl louver 14 are changed in the vehicle longitudinal direction in the vehicle width direction.

  The upper wall portion 14D of the cowl louver 14 and the rear side fixing portion 14B are connected by an inclined wall portion 14F having an inclined portion 14E that is inclined from the upper front side of the vehicle to the lower rear side of the vehicle at the front portion.

  FIG. 1 shows an enlarged perspective view of a portion along the section line 1-1 of FIG. 5 as seen obliquely from the front of the vehicle.

  As shown in FIG. 1, a plurality of long holes 50 are formed in the vertical wall portion 14 </ b> C of the cowl louver 14 at predetermined intervals in the vehicle width direction.

  FIG. 3 is a front view of the vertical wall portion 14C of the cowl louver 14 as viewed from the front of the vehicle, and FIG. 4 shows a state in which the vertical wall portion 14C of the cowl louver 14 is deformed in FIG.

  As shown in FIG. 3, the long hole 50 is formed in the center portion 14G in the vertical direction of the vertical wall portion 14C. The long hole 50 has an upper inclined portion 50A whose longitudinal direction is inclined in the vehicle width direction with respect to the vehicle vertical direction, and a longitudinal direction is inclined in the vehicle width direction opposite to the upper inclined portion 50A with respect to the vehicle vertical direction. The lower inclined portion 50B is provided, and the connecting portion between the upper inclined portion 50A and the lower inclined portion 50B is a bent portion 50C at the center in the vertical direction.

  The long hole 50 is inclined in the same direction in the entire vehicle width direction of the vertical wall portion 14C of the cowl louver 14.

  Therefore, when a compressive load in the vertical direction of the vehicle acts on the vertical wall portion 14C of the cowl louver 14, the vertical center portion 14G of the vertical wall portion 14C starts from the bent portion 50C of the long hole 50 in the vehicle width direction ( Deformation in the direction of arrow A in FIG. Further, the vertical center portion 14G of the vertical wall portion 14C is deformed in the vehicle width direction (the direction of arrow A in FIG. 4), so that the entire vertical wall portion 14C is compressed and deformed to the vehicle lower side.

  Next, the operation of this embodiment will be described.

  As shown in FIG. 2, when the collision body K hits the upper surface of the rear end portion 12A of the hood 12 and a collision load acts on the rear end portion 12A of the hood 12 toward the lower rear side (arrow B direction) of the vehicle. The rear end portion 12A of the hood 12 moves to the vehicle lower side and hits the upper wall portion 14D of the cowl louver 14.

  Therefore, a load (arrow F in FIG. 2) acts on the vertical wall portion 14C of the cowl louver 14 located on the vehicle lower side of the rear end portion 12A of the hood 12 from the vehicle upper side to the vehicle lower side. Further, the front fixing portion 14A to which the lower end of the vertical wall portion 14C is connected is supported from the vehicle lower side by the flange 26D of the cowl 26. For this reason, a compressive load in the vertical direction of the vehicle acts on the vertical wall portion 14 </ b> C of the cowl louver 14. As a result, the vertical wall portion 14C of the cowl louver 14 is deformed from the plurality of long holes 50 formed in the vertical wall portion 14C.

  At this time, in the present embodiment, the plurality of long holes 50 formed in the vertical center portion 14G of the vertical wall portion 14C is an upper inclined portion 50A whose longitudinal direction is inclined in the vehicle width direction with respect to the vehicle vertical direction. And a lower inclined portion 50B whose longitudinal direction is inclined in the vehicle width direction opposite to the upper inclined portion 50A with respect to the vehicle vertical direction, and the connecting portion between the upper inclined portion 50A and the lower inclined portion 50B is vertically It is a bent portion 50C in the center of the direction.

  Therefore, when a compressive load in the vertical direction of the vehicle acts on the vertical wall portion 14C of the cowl louver 14, the vertical center portion 14G of the vertical wall portion 14C starts from the bent portion 50C of the long hole 50 in the vehicle width direction ( Deformation in the direction of arrow A in FIG. Further, the vertical center portion 14G of the vertical wall portion 14C is deformed in the vehicle width direction (the direction of arrow A in FIG. 4), so that the entire vertical wall portion 14C is compressed and deformed to the vehicle lower side.

  As a result, when the collision body K hits the rear end portion 12A of the hood 12, the vertical wall portion 14C of the cowl louver 14 is easily deformed in the acting direction of the load F without stretching. For this reason, the energy absorption amount of the cowl louver 14 can be increased. Further, an increase in the deformation load of the vertical wall portion 14C in the cowl louver 14 is suppressed, and the injury value received by the collision body K can be reduced.

Moreover, in this embodiment, the connection part of the upper inclination part 50A and the lower inclination part 50B in the long hole 50 is made into the bending part 50C of the center of an up-down direction. As a result, the energy absorption amount increases with a simple long hole shape, and when the vertical center portion 14G of the vertical wall portion 14C is compressed and deformed, the deformation amount on the upper side and the lower side on the bent portion 50C are centered. Since the deformation amount becomes equal, the vertical center portion 14G of the vertical wall portion 14C can be efficiently compressed and deformed.

  Further, as shown by a two-dot chain line in FIG. 2, there are mounting parts 42 such as a battery and an engine in the engine room 40 of the vehicle. The positions of the portion 26C and the vertical wall portion 14C of the cowl louver 14 change in the vehicle longitudinal direction in the vehicle width direction. As a result, the angle α between the direction of application of the load by the collision body K (the direction of arrow B in FIG. 1) and the front wall portion 26C of the cowl 26 varies depending on the vehicle width direction of the vehicle. On the other hand, in the present embodiment, the vertical center portion 14G of the vertical wall portion 14C is configured to be deformed in the vehicle width direction starting from the long hole 50, so that the compression deformation of the vertical wall portion 14C is the angle α. Not easily affected. As a result, the vertical wall portion 14C can be stably compressed and deformed at each portion in the vehicle width direction with different angles α.

  Next, a second embodiment of the cowl louver of the present invention will be described with reference to FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 6 is a front view corresponding to FIG. 3 in the cowl louver of the present embodiment.

  As shown in FIG. 6, in the present embodiment, the entire linear long hole 50 in the vehicle front view is inclined in the vehicle width direction with respect to the vehicle vertical direction in the longitudinal direction. For this reason, the position of the upper end 50D and the position of the lower end 50E of the long hole 50 are shifted in the vehicle width direction.

  As a result, when a compressive load in the vertical direction of the vehicle is applied to the vertical wall portion 14C of the cowl louver 14, the vertical center portion 14G of the vertical wall portion 14C is in the vehicle width direction (arrow D in FIG. 6). Direction). Further, the vertical center portion 14G of the vertical wall portion 14C is deformed in the vehicle width direction (the direction of arrow D in FIG. 6), so that the entire vertical wall portion 14C is compressed and deformed to the vehicle lower side.

  Therefore, also in this embodiment, the same effect as that of the first embodiment can be obtained.

  Next, a third embodiment of the cowl louver of the present invention will be described with reference to FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 7 is a front view corresponding to FIG. 3 in the cowl louver of the present embodiment.

  As shown in FIG. 7, in the present embodiment, the arcuate long hole 50 as a whole when viewed from the front of the vehicle is curved so that the longitudinal direction is convex in the vehicle width direction with respect to the vehicle vertical direction. For this reason, the vertical center 50F of the long hole 50 is displaced in the vehicle width direction with respect to the upper end 50G and the lower end 50H, the portion between the upper end 50G and the vertical center 50F, and the lower end 50H and the vertical center. The portion between the portion 50F and the vehicle is inclined in the vehicle width direction with respect to the vehicle vertical direction.

  As a result, when a compressive load in the vertical direction of the vehicle acts on the vertical wall portion 14C of the cowl louver 14, the vertical center portion 14G of the vertical wall portion 14C is in the vehicle width direction (arrow E in FIG. 7). Direction). Further, the vertical center portion 14G of the vertical wall portion 14C is deformed in the vehicle width direction (the direction of arrow E in FIG. 7), so that the entire vertical wall portion 14C is compressed and deformed to the vehicle lower side.

  Therefore, also in this embodiment, the same effect as that of the first embodiment can be obtained.

  Next, a fourth embodiment of the cowl louver of the present invention will be described with reference to FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 8 is a front view corresponding to FIG. 3 in the cowl louver of the present embodiment.

  As shown in FIG. 8, in the present embodiment, the inclined portions 50J, 50K, 50L, and 50M of the corrugated long hole 50 in the vehicle front view are inclined in the vehicle width direction with respect to the vehicle vertical direction in the longitudinal direction. ing. For this reason, the position of the upper end of each inclined part 50J, 50K, 50L, 50M of the long hole 50 and the position of a lower end have shifted | deviated to the vehicle width direction.

  As a result, when a compressive load in the vertical direction of the vehicle acts on the vertical wall portion 14C of the cowl louver 14, the vertical center portion 14G of the vertical wall portion 14C is in the vehicle width direction (arrow F in FIG. 8). Direction and arrow G direction). Further, the vertical center portion 14G of the vertical wall portion 14C is deformed in the vehicle width direction (the arrow F direction and the arrow G direction in FIG. 8), so that the entire vertical wall portion 14C is compressively deformed to the vehicle lower side. It has become.

  Therefore, also in this embodiment, the same effect as that of the first embodiment can be obtained.

  While the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, the shape of the long hole 50 is not limited to the shape of each of the above embodiments, and may be other shapes as long as the longitudinal direction is inclined in the vehicle width direction with respect to the vehicle vertical direction.

  In addition, that the longitudinal direction of a long hole inclines in the vehicle width direction with respect to a vehicle up-down direction includes that the whole or a part of the longitudinal direction of the long hole is inclined linearly or in an arc shape.

  Moreover, it is good also as a structure which provided weak part formation means, such as a notch, for making a vertical wall part easy to deform | transform into a vehicle width direction in a part of long hole.

It is the expansion perspective view which looked at the site | part along the 1-1 sectional line of FIG. 5 from the vehicle diagonally forward inner side. FIG. 2 is a cross-sectional view taken along line 2-2 in FIG. It is the front view seen from the vehicles front which shows the cowl louver concerning a 1st embodiment of the present invention. It is the front view seen from the vehicles front which shows the deformation state of the cowl louver concerning a 1st embodiment of the present invention. It is the perspective view seen from the vehicle diagonal front which shows the front part of the vehicle to which the cowl louver which concerns on 1st Embodiment of this invention is applied. It is a front view corresponding to Drawing 3 showing a cowl louver concerning a 2nd embodiment of the present invention. It is a written drawing corresponding to Drawing 3 showing a cowl louver concerning a 3rd embodiment of the present invention. It is a written drawing corresponding to FIG. 3 which shows the cowl louver which concerns on 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle 12 Hood 14 Cowl louver 14A Front side fixing part of cowl louver 14B Rear side fixing part of cowl louver 14C Vertical wall part of cowl louver 14D Upper wall part of cowl louver 14G Vertical center part of vertical wall part of cowl louver 24 Windshield glass
26 cowl 50 long hole

Claims (4)

A cowl louver provided between the windshield glass and a hood located in front of the windshield glass,
A fixed part fixed to the cowl ;
A plurality of elongated holes extending in the vehicle width direction with respect to the vehicle up-down direction and extending in the vehicle width direction from the fixed portion and spaced apart from the cowl are formed, and a compressive load in the vehicle up-down direction is generated. A vertical wall that deforms in the vehicle width direction starting from the elongated hole when acted,
A cowl louver characterized by comprising:   2. The cowl louver according to claim 1, wherein the long hole formed in the vertical wall portion is linear and is bent at the center in the vertical direction.   2. The cowl louver according to claim 1, wherein the long hole formed in the vertical wall portion is linear and is inclined in the vehicle width direction with respect to the vehicle vertical direction.   2. The cowl louver according to claim 1, wherein the long hole formed in the vertical wall portion has an arc shape, and the center in the vertical direction is convex in the vehicle width direction.