JP4407476B2 - Vehicle cowl structure - Google Patents

Description

  The present invention relates to a vehicle cowl structure applied to a vehicle such as an automobile.

2. Description of the Related Art Conventionally, in a vehicle cowl structure applied to a vehicle such as an automobile, a cantilever-shaped first support extending substantially horizontally from a front edge of the upper surface of a dashboard, and a front windshield glass ( A thin lower flange portion that joins the second support to the first support, and a box portion having a hollow rectangular cross section that follows the lower flange portion. And an upper flange portion connected to the box portion, and a configuration is known in which the two members of the first and second supports are deformed to sufficiently secure the deformation amount (see, for example, Patent Document 1).
JP 2000-38160 A

  However, in the cowl structure of the vehicle as in Patent Document 1, when the collision object collides with the lower part of the front windshield glass, the second support that supports the lower part of the front windshield glass is deformed downward. At this time, when the second support moves in a direction in which the intermediate film of the front windshield glass extends or compresses in the longitudinal direction of the vehicle body, the downward deformation of the second support is suppressed by the intermediate film. As a result, it becomes difficult to sufficiently reduce the obstacle value of the collision object when the collision object collides with the lower part of the front windshield glass.

  In consideration of the above-described facts, the present invention provides a cowl structure for a vehicle that can sufficiently reduce the obstacle value of the collision object by sufficient deformation of the cowl when the collision object collides with the lower part of the front windshield glass. Is the purpose.

The cowl structure for a vehicle according to the first aspect of the present invention includes a cowl upper that supports a lower portion of the front windshield glass by a support portion formed at the upper end portion of the base portion, and a portion above the upper end of the rear wall portion is oblique to the vehicle body. The upper end of the inclined portion is coupled to the rear end of the base portion of the cowl upper to form a coupling portion, and the length from the front end of the support portion of the cowl upper to the front end of the coupling portion. Further, the cowl inner having a long length of the inclined portion, and a cowl not having a closed cross-sectional structure extending in the vehicle width direction, a support portion front end of the cowl upper, and a rear wall portion of the cowl inner are arranged in the vehicle width direction. And the cross-sectional shape seen from the longitudinal direction is U-shaped with the opening facing the front of the vehicle body, bent at the upper end substantially forward of the vehicle body and viewed from the front-rear direction of the vehicle body Surface shape and having a connecting member opening upper mounting portion of the U-shaped towards the vehicle body downwardly, a.

When a collision object collides with the lower part of the front windshield glass and a load acts on the lower part of the front window glass from the upper front side of the vehicle body to the lower rear side of the vehicle body, the length from the front end of the cowl upper support part to the front end of the joint part Since the length of the inclined portion of the cowl inner is long, the lower part of the front windshield glass moves in a direction in which the intermediate film of the front windshield glass hardly expands and contracts due to the deformation of the cowl upper and the cowl inner. For this reason, the intermediate film of the front windshield glass does not suppress the downward deformation of the cowl upper and the cowl inner. In addition, the cowl does not have a closed cross-sectional structure extending in the vehicle width direction, and the longitudinal direction of the connecting member that partially connects the front end of the support portion of the cowl upper and the rear wall portion of the cowl inner along the vehicle width direction. The cross-sectional shape seen is a U-shape with the opening facing the front of the vehicle body, and the upper end of the connecting member is bent substantially forward of the vehicle body, and the cross-sectional shape seen from the front-rear direction of the vehicle body faces the opening downward. A U-shaped upper mounting portion is formed. For this reason, when the upper mounting portion of the connecting member is coupled to the front end of the support portion of the cowl upper, the spot welding gun can be inserted from the empty space side on the front side of the vehicle body, so that the welding workability is improved.

According to the second aspect of the present invention, the upper end portion of the base portion is bent substantially forward to be a support portion that supports the lower portion of the front windshield glass, and the lower end portion of the base portion is bent substantially rearward to become a coupling portion. In addition, a cowl upper that is inclined from the upper front side of the vehicle body toward the lower rear side of the vehicle body and a portion above the upper end of the rear wall portion are bent toward the upper rear side of the vehicle body. And a cowl inner that is bent substantially rearward and coupled to the coupling portion of the cowl upper, and has no closed cross-sectional structure extending in the vehicle width direction. And the front end of the cowl upper support part and the rear wall part of the cowl inner are partially connected to each other along the vehicle width direction, and the cross-sectional shape viewed from the longitudinal direction is a U-shape with the opening facing the front of the vehicle body When And Tsu, characterized in that it has a connecting member cross-sectional shape as viewed from the longitudinal direction of the vehicle body is bent substantially toward the front of the vehicle body upper mounting portion of the shaped U with its openings to the vehicle body downward is formed in the upper portion And

When a collision object collides with the lower part of the front windshield glass and a load acts on the lower part of the front windshield from the upper front side of the vehicle body to the lower rear side of the vehicle body, the lower part of the front windshield glass is connected to the cowl upper and the cowl inner. However, by deforming at each bending point, the intermediate film of the front windshield glass moves in a direction in which it is difficult to expand and contract. Therefore, the intermediate film of the front windshield glass does not suppress the downward deformation of the cowl upper and the cowl inner. In addition, the cowl does not have a closed cross-sectional structure extending in the vehicle width direction, and the longitudinal direction of the connecting member that partially connects the front end of the support portion of the cowl upper and the rear wall portion of the cowl inner along the vehicle width direction. The cross-sectional shape seen is a U-shape with the opening facing the front of the vehicle body, and the upper end of the connecting member is bent substantially forward of the vehicle body, and the cross-sectional shape seen from the front-rear direction of the vehicle body faces the opening downward. A U-shaped upper mounting portion is formed. For this reason, when the upper mounting portion of the connecting member is coupled to the front end of the support portion of the cowl upper, the spot welding gun can be inserted from the empty space side on the front side of the vehicle body, so that the welding workability is improved.

According to a third aspect of the present invention, in the vehicle cowl structure according to the first or second aspect, the base portion of the cowl upper includes a support portion that supports a lower portion of the front windshield glass in the cowl upper. It extends in the direction away from the windshield glass.

In addition to the contents described in claim 1 or claim 2 , when the colliding body collides with the lower part of the front windshield glass, the base part of the cowl upper can easily move toward the front windshield glass with respect to the support part. Transforms into As a result, the cowl upper extends in a direction along the front windshield glass while being crushed downward in the vehicle body.

According to a fourth aspect of the present invention, in the vehicle cowl structure according to any one of the first to third aspects, an inclination angle of a rear wall portion of the cowl inner with respect to the front windshield glass is an inclined portion of the cowl inner. It is characterized in that it is closer to a right angle than the inclination angle of the front windshield glass.

In addition to the content described in any one of claims 1 to 3 , when the collision body collides with the lower portion of the front windshield glass, the inclined portion of the cowl inner is lowered with the upper end of the rear wall portion as the break point. Transforms easily into

According to a fifth aspect of the present invention, in the vehicle cowl structure according to any one of the first to fourth aspects, the connecting member is a portion where a vibration amplitude increases when the vehicle travels under the front windshield glass. It is characterized by being attached to.

In addition to the content of any one of Claims 1-4 , a connection member suppresses the vibration of the front windshield glass at the time of vehicle travel effectively.

The present invention is claimed in claim 6, characterized in that the cowl structure of a vehicle according to any one of claims 1 to 5, to form a fragile portion that extends in the vehicle width direction in the vertically intermediate portion of said connecting member And

In addition to the content described in any one of claims 1 to 5 , when the collision body comes into contact with the lower portion of the front windshield glass, the connecting member is formed in the vehicle width direction formed in the vertical middle portion. Easily deforms by breaking the extended weak part.

According to the first aspect of the present invention, when the collision body collides with the lower part of the front windshield glass, the obstacle value of the collision body can be sufficiently lowered by sufficient deformation of the cowl. Further, when the upper mounting portion of the connecting member is coupled to the front end of the support portion of the cowl upper, the welding workability is improved.

According to the second aspect of the present invention, when the collision body collides with the lower part of the front windshield glass, the obstacle value of the collision body can be sufficiently lowered by sufficient deformation of the cowl. Further, when the upper mounting portion of the connecting member is coupled to the front end of the support portion of the cowl upper, the welding workability is improved.

According to a third aspect of the present invention, in the cowl structure of the vehicle according to the first or second aspect, the base portion of the cowl upper is from a support portion that supports a lower portion of the front windshield glass in the cowl upper, and from the front windshield glass. Since it extends in the direction of separating, in addition to the effect of claim 1 or claim 2 , the impact absorbing performance is further improved.

According to a fourth aspect of the present invention, in the vehicle cowl structure according to any one of the first to third aspects, the inclination angle of the rear wall portion of the cowl inner with respect to the front windshield glass is such that the front wind of the inclined portion of the cowl inner is the same. Since it is closer to a right angle than the inclination angle with respect to the shield glass, in addition to the effect described in any one of claims 1 to 3 , the impact absorption performance is further improved.

According to a fifth aspect of the present invention, in the vehicle cowl structure according to any one of the first to fourth aspects, the connecting member is attached to a portion of the lower portion of the front windshield glass where the vibration amplitude increases when the vehicle travels. Therefore, in addition to the effect described in any one of claims 1 to 4 , vehicle interior noise can be effectively reduced.

Since the invention of claim 6 is that the cowl structure of a vehicle according to any one of claims 1 to 5, to form a fragile portion that extends in the vehicle width direction in the vertically intermediate portion of the connecting member, claim In addition to the effect described in any one of 1 to 5 , the connecting member can prevent the failure value from increasing.

A first embodiment as a reference example of a cowl structure of a vehicle not included in the present invention will be described with reference to FIGS.

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

  As shown in FIG. 4, the vehicle body 10 of the present embodiment includes a front hood 12 on the upper surface of the front portion of the vehicle body 10, and a front windshield glass 14 on the upper rear side of the front hood 12.

  As shown in FIG. 1, an intermediate film 16 is sandwiched between intermediate portions in the thickness direction of the front windshield glass 14, and the front windshield glass 14 has a three-layer structure of glass and an intermediate layer. A plate-shaped cowl louver 18 is attached to the lower end edge 14A of the front windshield glass 14, and the cowl louver 18 extends between the front hood 12 and the front windshield glass 14 along the vehicle width direction. Installed. The cowl louver 18 supports the rear end of the front hood 12 from the lower side of the vehicle body at the front end 18A, and partially protrudes the claw 18D in the vehicle width direction at the rear end 18B to lower the lower edge 14A of the front windshield glass 14. Is sandwiched.

  A cowl 20 is attached along the vehicle width direction below the lower portion 14B of the front windshield glass 14 and the cowl louver 18, and the cowl 20 includes a cowl upper 22 and a cowl inner 24.

  The base portion 22A of the cowl upper 22 is inclined from the upper front side of the vehicle body toward the lower rear side of the vehicle body, and the upper end portion of the base portion 22A is bent to the lower front side of the vehicle body to form a support portion 22B. A lower portion 14B of the front windshield glass 14 is fixed to the upper surface of the support portion 22B by an adhesive 28, and the support portion 22B supports the lower portion 14B of the front windshield glass 14 from the lower side of the vehicle body.

  Further, the base portion 22A of the cowl upper 22 is inclined at a predetermined angle α from the rear end of the support portion 22B in a direction away from the front windshield glass 14, and the collision body K is located below the front windshield glass 14. When colliding with 14B, the base portion 22A of the cowl upper 22 is deformed in a direction approaching the front windshield glass 14 with respect to the support portion 22B (direction of arrow B in FIG. 2).

  Further, the lower end portion of the base portion 22 </ b> A of the cowl upper 22 is bent rearward of the vehicle body to form a flange 22 </ b> C, and the flange 22 </ b> C serves as a coupling portion with the cowl inner 24.

  The cross-sectional shape of the cowl inner 24 as viewed from the vehicle width direction is a substantially U-shape with the opening facing upward. Further, a portion above the upper end 24C of the rear wall portion 24B of the cowl inner 24 is an inclined portion 24D, and the inclined portion 24D extends from the upper end 24C of the rear wall portion 24B toward the upper rear side of the vehicle body.

  An upper end of the inclined portion 24D of the cowl inner 24 is a flange 24E bent substantially toward the rear of the vehicle body. The flange 24E is coupled to the lower surface of the flange 22C of the cowl upper 22 by welding or the like.

  Further, both the length L1 from the front end of the support portion 22B of the cowl upper 22 to the front end of the flange 22C, which is the coupling portion between the cowl upper 22 and the cowl inner 24, and the length L2 of the inclined portion 24D of the cowl inner 24 are: As shown in FIG. 3, the deformation trajectory (arrow S) of the support portion 22B of the cowl upper 22 generated when the collision body K collides with the lower portion 14B of the front windshield glass 14 indicates that the intermediate film 16 of the front windshield glass 14 is It is set to a length that is a deformation locus that restricts expansion and contraction in the front-rear direction (arrow A direction) of the vehicle body.

  More specifically, in the front windshield glass 14, the length M1 from the support portion 22B and the adhesive 28 portion of the cowl upper 22 to the upper end portion is deformed by the collision body K to become the length M2. In this case, L1 and L2 are determined so that the deformation of the cowl upper 22 and the cowl inner 24 hardly causes expansion and contraction of the intermediate film 16 of the front windshield glass 14, that is, M2 maintains substantially the same length as M1. Has been. For this reason, even when the intermediate film 16 is hard, the front windshield glass 14 is deformed following the cowl upper 22 and the cowl inner 24, so that the cowl upper 22 and the cowl inner 24 overlap each other without excessive line length, and are easily crushed. This makes it possible to use the deformation stroke effectively.

  Accordingly, as shown in FIG. 3, the collision body K collides with the lower portion 14A of the front windshield glass 14, and the load F acts on the lower portion 14A of the front windshield 14 from the upper front side of the vehicle body to the lower rear side of the vehicle body. In the lower part 14A of the front windshield glass 14, the cowl upper 22 and the cowl inner 24 are deformed with each bending point as a break point, so that the intermediate film 16 of the front windshield 14 is forward and rearward (in the direction of arrow A). In the direction in which the colliding body K collides with the lower portion 14A of the front window glass 14 (in the direction of arrow F in FIG. 3), The direction of deformation of the front window glass 14 (the direction of arrow S in FIG. 3) is set to a different direction.

  That is, when the cowl upper 22 and the cowl inner 24 are crushed, the deformation trajectory of the front window glass 14 with respect to the collision direction (direction of arrow F in FIG. 3) when the collision body K collides with the lower portion 14A of the front window glass 14. The direction is corrected in the direction in which the intermediate film 16 of the front window glass 14 does not easily expand and contract in the front-rear direction of the vehicle body (in the direction of arrow A) (in the direction of arrow S in FIG. 3).

  As shown in FIG. 1, the inclination angle θ1 of the rear wall 24B of the cowl inner 24 with respect to the front windshield glass 14 is closer to the right angle than the inclination angle θ2 of the inclined portion 24D of the cowl inner 24 with respect to the front windshield glass 14. For this reason, when the collision body K collides with the lower part 14B of the front windshield glass 14, the inclined part 24D is compared with the rear wall part 24B of the cowl inner 24, with the upper end 24C of the rear wall part 24B being the folding point. It is easily deformed downward (in the direction of arrow C in FIG. 2).

  A flange 24F formed toward the front of the vehicle body is formed at the upper end portion of the front wall portion 24A of the cowl inner 24. The flange 24F is a recess formed near the front end 18A of the cowl louver 18 toward the vehicle body lower side. 18C is supported from the vehicle body lower side.

  Next, the operation of this embodiment will be described.

  In the present embodiment, as shown in FIG. 1, the base portion 22A of the cowl upper 22 is inclined from the upper front side of the vehicle body toward the lower rear side of the vehicle body, and the upper end portion of the base portion 22A is bent to the lower front side of the vehicle body. The lower end portion of the base portion 22A of the cowl upper 22 is bent substantially rearward of the vehicle body to form a flange 22C. The flange 22C serves as a coupling portion with the cowl inner 24. On the other hand, the inclined portion 24D of the cowl inner 24 extends from the upper end 24C of the rear wall portion 24B toward the upper rear side of the vehicle body, and a flange 24E bent substantially toward the rear of the vehicle body at the upper end of the inclined portion 24D It is coupled to the lower surface of the flange 22C.

  As a result, as shown in FIG. 3, the collision body K collides with the lower portion 14A of the front windshield glass 14, and a load F acts on the lower portion 14A of the front window glass 14 from the front upper side of the vehicle body toward the lower rear side of the vehicle body. In this case, the lower film 14A of the front windshield glass 14 is deformed with the bending points of the cowl upper 22 and the cowl inner 24 as break points, so that the intermediate film 16 of the front windshield 14 moves forward and backward (in the direction of arrow A). It moves in a direction that does not easily expand and contract (direction of arrow S in FIG. 3).

  In the present embodiment, the length L1 from the front end portion of the support portion 22B of the cowl upper 22 to the front end portion of the flange 22C, which is the coupling portion between the cowl upper 22 and the cowl inner 24, and the length of the inclined portion 24D of the cowl inner 24 As shown in FIG. 3, both L2 and L2 are deformed trajectories (arrow S in FIG. 3) of the support portion 22B of the cowl upper 22 generated when the collision body K collides with the lower portion 14B of the front windshield glass 14. The length of the intermediate film 16 of the front windshield glass 14 is set to be a deformation locus that restricts expansion and contraction in the front-rear direction (arrow A direction) of the vehicle body.

  As a result, when the collision body K collides with the lower portion 14A of the front windshield glass 14 and a load F acts on the lower portion 14A of the front windshield 14 from the front upper side of the vehicle body toward the lower rear side of the vehicle body, the front windshield The lower part 14A of the glass 14 moves in a direction (in the direction of arrow S in FIG. 3) in which the intermediate film 16 of the front window glass 14 does not easily expand and contract in the front-rear direction (in the direction of arrow A). In addition, the moving direction S of the lower part 14A of the front windshield glass 14 may be different from the acting direction of the load F, or may coincide with it.

  For this reason, the intermediate film 16 of the front windshield glass 14 does not prevent the cowl upper 22 and the cowl inner 24 from being deformed downward.

  That is, in the present embodiment, the cowl upper 22 and the cowl inner 24 overlap each other without much line length, and are crushed without difficulty, so that the deformation stroke can be used up effectively and the impact can be sufficiently absorbed. Therefore, the obstacle value of the collision body K when the collision body K collides with the lower part 14B of the front windshield glass 14 can be sufficiently lowered.

  In the present embodiment, the base portion 22A of the cowl upper 22 is inclined at a predetermined angle α from the support portion 22B in a direction away from the front windshield glass 14. As a result, when the collision body K collides with the lower portion 14B of the front windshield glass 14, the direction in which the base portion 22A of the cowl upper 22 approaches the front windshield glass 14 with respect to the support portion 22B (the direction of arrow B in FIG. 2). ) Can be easily transformed. For this reason, the impact absorbing performance is further improved by extending the cowl upper 22 in the direction along the front windshield glass 14 while being crushed downward in the vehicle body.

  In this embodiment, the inclination angle θ1 of the rear wall 24B of the cowl inner 24 with respect to the front windshield glass 14 is closer to the right angle than the inclination angle θ2 of the inclined portion 24D of the cowl inner 24 with respect to the front windshield glass 14. As a result, when the colliding body K collides with the lower portion 14B of the front windshield glass 14, the inclined portion 24D of the cowl inner 24 can be easily moved downward (in the direction of arrow C) with the upper end 24C of the rear wall portion 24B as the break point. Deform. For this reason, this deformation of the cowl inner 24 further improves the shock absorbing performance.

Next, a second embodiment as a reference example of a cowl structure for a vehicle not included in the present invention will be described with reference to FIGS.

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

  As shown in FIG. 8, in the present embodiment, braces 30 as connecting members are respectively attached below the portions P1, P2, and P3 where the vibration amplitude increases when the vehicle travels in the lower portion 14B of the front windshield glass 14. .

  Note that the portions P1, P2, and P3 where the vibration amplitude increases when the vehicle travels in the lower portion 14B of the front windshield glass 14 vary depending on the characteristics of each vehicle body, and therefore are partially along the vehicle width direction determined according to each vehicle body. It becomes a position. For example, a point P1 that is the central portion in the vehicle width direction in the lower portion 14B of the front windshield glass 14 and two points P2 and P3 that are 1/3 of the length in the vehicle width direction are portions where the vibration amplitude increases when the vehicle travels. In the vehicle body, a brace 30 as a connecting member is attached below the points P1, P2, and P3B.

  As shown in FIG. 7, the brace 30 is formed of a strip-shaped plate material, and is attached with the longitudinal direction being substantially the vertical direction of the vehicle body. A bent portion 32 is formed as a fragile portion extending in the vehicle width direction at a middle portion in the vertical direction of the brace 30, in the present embodiment, approximately in the center in the vertical direction of the brace 30. Is in a folded state that is convex forward of the vehicle body.

  The cross-sectional shape of the brace 30 viewed from the longitudinal direction (vertical direction) is a U-shape with the opening directed toward the rear of the vehicle body. A flange 30B is formed toward the front.

  Further, in the bent portion 32 of the brace 30, the left and right flanges 30 </ b> B are bent outward in the vehicle width direction to form a convex portion 33. These convex portions 33 are bent by three folding lines 33A that radiate from both ends 32A in the vehicle width direction of the bent portion 32. When the brace 30 is bent at the bent portion 32, the convex portion 33 is folded. The brace 30 is easily bent by being folded along the line 33A.

  An upper attachment portion 30 </ b> C extending upward along the surface direction of the base portion 30 </ b> A is formed in the vehicle width direction central portion of the upper end portion of the base portion 30 </ b> A in the brace 30. Further, a lower attachment portion 30D extending downward along the surface direction of the base portion 30A is formed at the vehicle width direction central portion of the lower end portion of the base portion 30A in the brace 30, and the lower attachment portion 30D is The bent portion is bent toward the front of the vehicle body in the vicinity of the root portion, and the bent portion is a coupling portion 30E.

  As shown in FIG. 5, the upper mounting portion 30C of the brace 30 is welded to the rear surface of the brace mounting portion 22D of the cowl upper 22, and the brace mounting portion 22D of the cowl upper 22 is attached to the front end portion of the support portion 22B at the front lower side of the vehicle body. Projecting toward the side. Further, the coupling portion 30E of the lower mounting portion 30D of the brace 30 is welded to the front surface of the seat portion 34 of the cowl inner 24, and the seat portion 34 of the cowl inner 24 is formed to protrude toward the front of the vehicle body on the rear wall portion 24B. Has been. As shown in FIG. 8, the brace attachment portion 22D of the cowl upper 22 is formed at predetermined intervals along the vehicle width direction only at a portion corresponding to the upper attachment portion 30C of the brace 30, and the seat portion of the cowl inner 24 34 is formed at predetermined intervals along the vehicle width direction only at a portion corresponding to the lower mounting portion 30D of the brace 30.

  Therefore, by supporting the support portion 22B of the cowl upper 22 to which the portions P1, P2, and P3 of the lower portion 14B of the front windshield glass 14 where the vibration amplitude becomes large when the vehicle is running is supported by the braces 30, the front windshield glass 14 Vibration can be suppressed.

  On the other hand, as shown in FIG. 6, when the collision body K collides with the lower part 14B of the front windshield glass 14, the brace 30 is easily deformed downward (in the direction of arrow D) with the folding part 32 as the break point. It is supposed to be.

  Next, the operation of this embodiment will be described.

  In the present embodiment, braces 30 are respectively attached below the portions P1, P2, and P3 in the lower portion 14B of the front windshield glass 14 where the vibration amplitude increases when the vehicle is traveling. Further, the upper mounting portions 30C of these braces 30 are welded to the brace mounting portions 22D that are formed to protrude from the tip of the support portion 22B of the cowl upper 22, and the lower mounting portions 30D are the rear wall portions of the cowl inner 24. It is welded to a seat portion 34 formed to project from 24B. For this reason, the support portion 22B of the cowl upper 22 to which the portions P1, P2, P3 of the lower portion 14B of the front windshield glass 14 where the vibration amplitude increases when the vehicle travels is supported by these braces 30, thereby the front windshield glass 14 Can be suppressed. For this reason, vehicle interior noise can be reduced.

  Further, in the present embodiment, a bent portion 32 extending in the vehicle width direction is formed at the center of the brace 30 in the vertical direction, and the brace 30 is in a folded state in which the shape viewed from the vehicle width direction is convex forward of the vehicle body. Yes. As a result, as shown by a solid line in FIG. 6, the collision body K collides with the lower portion 14A of the front windshield glass 14, and a load F is applied to the lower portion 14A of the front windshield 14 from the upper front side of the vehicle body to the lower rear side of the vehicle body. When acting, the brace 30 is easily deformed downward (in the direction of arrow D) from the position indicated by the two-dot chain line in FIG.

  For this reason, as in the first embodiment, the lower film 14A of the front windshield glass 14 is deformed with the bending points of the cowl upper 22 and the cowl inner 24 as break points, so that the intermediate film 16 of the front windshield 14 is Move in a direction that is difficult to expand and contract in the direction (arrow A direction). As a result, the intermediate film 16 of the front windshield glass 14 does not prevent the cowl upper 22 and the cowl inner 24 from being deformed downward.

  That is, without being affected by the brace 30, the cowl upper 22 and the cowl inner 24 are crushed without difficulty, so that the deformation stroke can be used up effectively and the shock can be absorbed sufficiently. Therefore, the obstacle value of the collision body K when the collision body K collides with the lower part 14B of the front windshield glass 14 can be sufficiently lowered.

Next, a third embodiment as a reference example of a vehicle cowl structure not included in the present invention will be described with reference to FIGS.

  In addition, about the same member as 2nd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 10, in the present embodiment, the upper mounting portion 30C of the brace 30 is bent toward the vehicle body rear upper side in the vicinity of the root portion, and the bent portion is a coupling portion 30F.

  As shown in FIG. 9, the coupling portion 30 </ b> F of the upper mounting portion 30 </ b> C of the brace 30 is welded to the lower surface of the front end portion of the support portion 22 </ b> B of the cowl upper 22. Therefore, it is not necessary to form the brace attachment portion 22D on the cowl upper 22.

  Other structural effects are the same as those of the second embodiment.

Next, a fourth embodiment of the cowl structure of a vehicle which is the invention according to FIGS.

  In addition, about the same member as 2nd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 12, in this embodiment, the cross-sectional shape of the brace 30 viewed from the longitudinal direction (vertical direction) is a U-shape with the opening directed toward the front of the vehicle body, and a long rectangular base portion Flange 30B is formed in the vehicle width direction both ends of 30A toward the vehicle body front.

  An upper mounting portion 30G that is bent substantially forward is formed at the upper end of the base portion 30A of the brace 30, and flanges 30H are formed at both ends in the vehicle width direction of the upper mounting portion 30G toward the vehicle body downward. Has been. Further, a lower mounting portion 30J that is bent substantially forward of the vehicle body is formed at the lower end portion of the base portion 30A of the brace 30. Both ends of the lower mounting portion 30J in the vehicle width direction are directed upward of the vehicle body. A flange 30K is formed.

  As shown in FIG. 11, the upper mounting portion 30G of the brace 30 is welded to the front end lower surface 22E of the support portion 22B of the cowl upper 22, and the lower mounting portion 30J of the brace 30 is connected to the rear wall portion 24B of the cowl inner 24. It is welded to the lower part 24G.

  Accordingly, when welding the upper mounting portion 30G of the brace 30 to the front end lower surface 22E of the support portion 22B of the cowl upper 22, a spot welding gun can be inserted from the open space side on the front side of the vehicle body, so that the welding workability is good. Become.

  Other structural effects are the same as those of the second embodiment.

Next, a fifth embodiment of a vehicle cowl structure according to the present invention will be described with reference to FIGS.

  In addition, about the same member as 4th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 14, in the present embodiment, lower attachment portions 30L are formed at the lower end portion of the base portion 30A of the brace 30 substantially downward in the vehicle body, and both end portions in the vehicle width direction of the lower attachment portions 30L. The flange 30B is continuously formed.

  As shown in FIG. 13, the lower mounting portion 30L of the brace 30 is welded to the upper portion 24H of the rear wall portion 24B of the cowl inner 24.

  Other structural effects are the same as those of the fourth embodiment.

Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such 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 cross-sectional shape of the cowl inner 24 viewed from the vehicle width direction is not limited to a substantially U-shape with the opening facing the vehicle body upward, and may be another cross-sectional shape having the opening .

  Further, the connecting member is not limited to the brace 30, and has a rigidity for suppressing the vibration of the front windshield glass by partially connecting the front end of the support portion of the cowl upper and the rear wall portion of the cowl inner along the vehicle width direction. If a collision object collides with the lower part of the front windshield glass and a load acts on the lower part of the front windshield from the upper front side of the vehicle body to the lower rear side of the vehicle body, any other member can be used as long as it is easily deformed. These members may be used.

  In addition, the weak part of the connecting member is not limited to the bent part, it has rigidity to suppress the vibration of the front windshield glass, the collision object collides with the lower part of the front windshield glass, and the front part of the vehicle body When a load is applied from the upper side to the lower rear side of the vehicle body, other structures such as a thin wall portion and a hole forming portion may be used as long as they are easily deformed (folded or crushed).

FIG. 5 is an enlarged cross section taken along line 1-1 of FIG. 4. It is sectional drawing corresponding to FIG. 1 which shows the deformation | transformation state of 1st Embodiment as a reference example of the cowl structure of the vehicle which is not included in this invention. It is sectional drawing corresponding to FIG. 1 which shows the deformation | transformation state of 1st Embodiment as a reference example of the cowl structure of the vehicle which is not included in this invention. It is the perspective view seen from the vehicle body diagonally front which shows the vehicle body front part to which 1st Embodiment as a reference example of the cowl structure of the vehicle not included in the present invention is applied. It is sectional drawing corresponding to FIG. 1 which shows 2nd Embodiment as a reference example of the cowl structure of the vehicle which is not included in this invention. It is sectional drawing corresponding to FIG. 3 which shows the deformation | transformation state of 2nd Embodiment as a reference example of the cowl structure of the vehicle which is not included in this invention. It is the perspective view seen from the vehicle body diagonal front which shows the brace of 2nd Embodiment as a reference example of the cowl structure of the vehicle which is not included in this invention. It is the perspective view seen from the vehicle body diagonally front which shows 2nd Embodiment as a reference example of the cowl structure of the vehicle which is not included in this invention. It is sectional drawing corresponding to FIG. 1 which shows 3rd Embodiment as a reference example of the cowl structure of the vehicle which is not included in this invention. It is the perspective view seen from the vehicle body diagonal front which shows the brace of 3rd Embodiment as a reference example of the cowl structure of the vehicle which is not included in this invention. It is sectional drawing corresponding to FIG. 1 which shows the cowl structure of the vehicle which concerns on 4th Embodiment which is this invention. It is the perspective view seen from the vehicle body diagonally back which shows the brace of the cowl structure of the vehicle which concerns on 4th Embodiment which is this invention. It is sectional drawing corresponding to FIG. 1 which shows the cowl structure of the vehicle which concerns on 5th Embodiment which is this invention. It is the perspective view seen from the vehicle body diagonally back which shows the brace of the cowl structure of the vehicle which concerns on 5th Embodiment which is this invention.

Explanation of symbols

14 Front Windshield Glass 16 Front Windshield Glass Intermediate Film 20 Cowl 22 Cowl Upper 22A Cowl Upper Base 22B Cowl Upper Support 22C Cowl Upper Flange 22D Cowl Upper Brace Mounting 24 Cowl Inner 24A Cowl Inner Front Wall 24B Cowl Inner Rear Wall 24C Upper end of rear wall portion of cowl inner 24D Inclined portion of cowl inner 24E Flange of cowl inner 24F Flange of cowl inner 30 Brace (connection member)
30A Brace base 30B Brace flange 30C Brace upper mounting portion 30D Brace lower mounting portion 30E Brace coupling portion 30F Brace coupling portion 30G Brace upper mounting portion 30J Brace lower mounting portion 30L Brace lower mounting portion Part 32 Brace breakage (fragile part)
34 Cowl Inna's Seat

Claims (6)

A cowl upper that supports the lower part of the front windshield glass with a support formed at the upper end of the base,
A portion above the upper end of the rear wall portion is an inclined portion extending obliquely upward on the rear side of the vehicle body, and the upper end of the inclined portion is coupled to the rear end of the base portion of the cowl upper and becomes a coupling portion. A cowl inner in which the length of the inclined portion is longer than the length from the front end of the support portion of the cowl upper to the front end of the coupling portion;
A cowl not having a closed cross-sectional structure extending in the vehicle width direction,
The front end of the cowl upper support portion and the rear wall portion of the cowl inner are partially connected to each other along the vehicle width direction, and the cross-sectional shape viewed from the longitudinal direction is a U-shape with the opening facing the front of the vehicle body. A connecting member in which a U-shaped upper mounting portion in which the cross-sectional shape viewed from the front-rear direction of the vehicle body is bent substantially forward at the upper end portion and the opening portion is directed downward of the vehicle body is formed,
A cowl structure for a vehicle characterized by comprising: An upper end portion of the base portion is bent substantially forward to be a support portion that supports the lower portion of the front windshield glass, and a lower end portion of the base portion is bent substantially rearward to become a coupling portion. A cowl upper inclined from the upper front side of the vehicle body to the lower rear side of the vehicle body ,
A cowl inner portion of the rear wall portion above the upper end is bent toward the upper rear side of the vehicle body to form an inclined portion, and the upper end of the inclined portion is bent substantially rearward and coupled to the coupling portion of the cowl upper. When,
A cowl not having a closed cross-sectional structure extending in the vehicle width direction,
The front end of the cowl upper support portion and the rear wall portion of the cowl inner are partially connected to each other along the vehicle width direction, and the cross-sectional shape viewed from the longitudinal direction is a U-shape with the opening facing the front of the vehicle body. A connecting member in which a U-shaped upper mounting portion in which the cross-sectional shape viewed from the front-rear direction of the vehicle body is bent substantially forward at the upper end portion and the opening portion is directed downward of the vehicle body is formed,
A cowl structure for a vehicle characterized by comprising: Base of the Kauruappa is claim 1 or claim 2, wherein the the support portion for supporting the lower portion of the front windshield glass, and extends in a direction away from the front windshield glass in the Kauruappa The cowl structure of the vehicle described in 1. Angle of inclination with respect to the front windshield glass of the rear wall of the Kauruin'na is any one of claims 1 to 3, wherein the nearly right angle from the angle of inclination with respect to the front windshield glass of the inclined portion of the Kauruin'na The cowl structure of the vehicle described in 1. 5. The vehicle cowl structure according to claim 1 , wherein the connecting member is attached to a portion of the lower portion of the front windshield glass where the vibration amplitude increases when the vehicle travels . The vehicular cowl structure according to any one of claims 1 to 5 , wherein a weakened portion extending in the vehicle width direction is formed at an intermediate portion in the vertical direction of the connecting member .

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