JPH09202265A - Structure of vehicle body cowl box member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain a cowl box member to project to a cowl box part so as to reduce ventilation resistance by thickening the nearly front and rear vertical walls of a cowl box member section more than the other part position, and connecting the lower end part of a windshield fitting face provided on the upper inclined part to the wall opposed to this through a rib. SOLUTION: The section of a cowl box member 21 constituting a cowl box 2 together with a cowl top panel 22 of plate material, is formed into a structure provided with nearly front and rear vertical walls 21b, 21c thickened (t1) more than the other part position (t2), and a rib 21d connecting the lower end part of a windshield fitting face 21a to the wall opposed to this. When a backward load is applied to the front part of a vehicle body at collision or the like, the backward load is applied to the cowl box member 21 accompanying backward movement of an engine and the like, but the nearly front and rear vertical walls of the cowl box member 21 are thicker than the other pat position, hence the geometrical moment of inertia can be enlarged while restraining the length in the longitudinal direction of the vehicle body.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a vehicle body cowl box member structure.

[0002]

2. Description of the Related Art Conventionally, a cowl box is provided along the vehicle width direction between front pillars on the body side of an automobile body. As shown in FIGS. 9 and 10, the cowl box 62 supports the lower part of the windshield at the upper rear part. As a structure of the vehicle body cowl box 62, for example, there is a vehicle body cowl box member structure in which a closed cross section 621 is formed at the rear portion of the cowl box by a plate cowl box 621a and a plate material reinforcement 621b as shown in FIG. Further, as a vehicle body cowl box member structure formed by extruding a light alloy, for example, a vehicle body cowl box member 72 as shown in FIG.
There is also 1. (Japanese Patent Application No. 60-135375)

[0003]

However, in such a conventional vehicle body cowl box member structure as shown in FIGS. 9 and 10, the cowl box 621a made of a plate material and the reinforcement force 621b made of a plate material are used for the cowl box. Since the closed cross section 621 is formed in the rear part, when a rearward load is applied to the front part of the vehicle body at the time of a collision or the like, the cowl box 62 is moved along with the rearward movement of the vehicle body such as the engine. A load acts on the vehicle body rearward in the direction of arrow F in FIG. Therefore, in order to support this load, the closed cross-section portion 6 of the cowl box 62 is
It is conceivable to lengthen 21 in the front-rear direction of the vehicle body or to increase the plate thickness.
If it is made long so as to project into the cross section of the cowl box portion 62, the cross sectional area of the cowl box portion 62 becomes small, and the ventilation resistance of the cowl box portion 62 that is an air intake path that greatly affects the ventilation performance of the vehicle becomes large. As a result, there is a possibility that a predetermined amount of air flow into the room may not be secured. Further, when the closed cross-section portion 621 of the cowl box 62 is projected to the indoor side, it is necessary to provide rearward positions of a steering member, an instrument panel, etc., which are provided along the vehicle body width direction and which supports a steering wheel and an airbag. Yes, there is a risk that the front-rear length of the room will be narrowed and the patient's mobility will be impaired. As described above, it is necessary to lengthen the closed cross-section portion 621 of the cowl box 62 in the vehicle front-rear direction or to increase the plate thickness.
In any case, the weight is increased.

On the other hand, in order to avoid such an increase in weight, there is a structure in which the vehicle body cowl box member 721 is formed of a constant cross-section member such as a light alloy extruded material. However, in this cowl box member 721, the cross section including the windshield attachment surface 721a has a closed cross-section structure with a square shape, and therefore, when bending is performed along the curvature of the lower surface of the windshield. , The glass mounting surface 7
21a may be dented or the like, resulting in a large variation in the gap between the glass and the glass, which may impair the adhesive performance. Therefore,
It has been desired to further reduce the cross section of the cowl top member, reduce the weight, and improve the glass bonding performance.

The present invention focuses on such a conventional problem, and a cowl box member is provided substantially above the rear of the vehicle body cowl box, and the cross section of the cowl box member is made thicker than other parts. It is an object of the present invention to solve the above problems by providing a structure including front and rear vertical walls, a windshield mounting surface provided on an upper inclined portion, and a rib connecting a lower end portion of the glass mounting surface to an opposing wall surface. .

[0006]

In order to achieve the above object, in the vehicle body cowl box member structure according to claim 1 of the present invention, the skeleton of the vehicle body mainly uses a constant cross-section member such as a light alloy extruded member. In a cowl box member structure that supports the lower part of the windshield of the vehicle body that is configured, a cowl box member is provided approximately above the rear of the vehicle body cowl box, and the cross section of the cowl box member is a substantially front and rear vertical wall that is thicker than other parts, A configuration is provided in which a windshield mounting surface provided on the upper inclined portion and a rib connecting the lower end portion of the glass mounting surface to the opposing wall surface are provided. Further, in the vehicle body cowl box member structure according to claim 2 of the present invention,
The vehicle body cowl box member structure according to claim 1, wherein a substantially cylindrical outer shell portion, a windshield mounting surface provided on an upper inclined portion of the outer shell portion, and the outer shell portion that is thicker than other portions substantially in the front-back vertical direction. It has a structure with a wall. Further, in the vehicle body cowl box member structure according to claim 3 of the present invention, in the vehicle body cowl box member structure according to claim 1 or 2, when a member is bent inside the glass mounting surface, a dent on the glass mounting surface is suppressed. It is configured to have a protrusion. Further, in the vehicle body cowl box member structure according to claim 4 of the present invention, in the vehicle body cowl box member structure according to claim 1, a wall surface on the lower front side of the glass mounting surface, the inside of the wall surface being flush with the glass mounting surface, and a body side. And a wall surface of the front lower portion of the glass mounting surface, which is formed so as to contact the glass mounting surface on the body side at the time of coupling, is formed. Further, in the vehicle body cowl box member structure according to claim 5 of the present invention, in the vehicle body cowl box member structure according to claim 1 or 2, various units are attached to the front and rear vertical walls which are thicker than other portions, and near the corners. It is configured to have a flange for use. Further, in the vehicle body cowl box member structure according to claim 5 of the present invention, in the vehicle body cowl box member structure according to claim 1 or 2, an air outlet is provided at an arbitrary position in a member longitudinal direction of a wall surface intersecting with an upper portion of the glass mounting surface. It has a different configuration.

[0007]

First Embodiment FIGS. 1 and 2 are views showing a first embodiment of the present invention. First, the configuration will be described. In the vicinity of the joint portion of the front pillar upper 3, front pillar lower 5, and hood ridge 4 of the vehicle body 1 in which the skeleton of the vehicle body is mainly composed of a constant cross-section member such as a light alloy extruded material, A cowl box 2 is provided along the vehicle width direction.
This cowl box 2 is a plate-shaped cowl top panel 22.
And a cowl box member 21 provided at the rear upper part, and the cross section of the cowl box member 21 is substantially thicker (t1) than other portions (t2).
c and the windshield mounting surface 21a provided on the upper inclined portion
And a rib 21d connecting from the lower end of the glass mounting surface 21a to the opposing wall surface. Further, a flange 21e for joining the cowl top panel 22 is provided on the lower portion of the cowl box member 21.

Next, the operation will be described. As shown in FIG. 2, when a rearward load is applied to the front portion of the vehicle body at the time of a collision or the like, the cowl box member is moved rearwardly of the vehicle body (arrows in FIG. The load acts toward the F direction), but since the substantially front and rear vertical walls 21b and 21c of the cowl box member 21 are thicker than other parts, the second moment of area is suppressed while suppressing the length in the front and rear direction of the vehicle body. Is large, and the amount of displacement can be kept small. Therefore, the protrusion of the cowl box member 21 to the cowl box portion 2 can be suppressed, the ventilation resistance can be reduced, and a predetermined air volume into the room can be secured. In addition, the cowl box member 21 has a small protrusion to the inside of the room and does not impair the habitability. Further, since the windshield mounting surface 21a provided on the upper inclined portion and the rib 21d connecting the lower end portion of the glass mounting surface 21a to the opposing wall surface are provided, it is bent along the curvature of the windshield lower surface. It is possible to suppress deformation such as a dent of the glass mounting surface 21a when processing (the arrow R in FIG. 2 is a bending inside R), so that the variation in the gap for the adhesive 7 of the windshield 6 is small and reliable. Adhesive performance can be obtained.

FIG. 3 shows the second embodiment. The cowl box member 121 of the vehicle body has a substantially cylindrical outer shell, and a windshield mounting surface 121a is provided on an upper inclined portion of the outer shell, and the outer shell substantially front and rear vertical walls 121b and 121c are thicker than other portions. There is. Therefore, with respect to the load (in the direction of arrow F in FIG. 3) directed from the front of the vehicle body to the rear in the event of a collision or the like, the outer substantially vertical walls 121b and 121c of the outer shell are substantially the same.
Is thicker than other portions, the second moment of area becomes large. Further, since it has a substantially cylindrical shape, the cowl box portion generated by an input from the suspension or the like is substantially in the vertical direction of the vehicle body (arrow G in FIG. 3) and the twisting force (FIG. 3).
The flexural rigidity and the torsional rigidity are high with respect to any of the loads indicated by the arrow M), and they act efficiently.

FIG. 4 shows the third embodiment. The cowl box member 221 has a structure in which a projection 221f in the member longitudinal (extrusion) direction is provided inside the glass mounting surface 221a. Therefore, when bending is performed along the curvature of the lower surface of the windshield 6, it is possible to further suppress the deformation such as the dent of the glass mounting surface 221a, and the variation in the gap for the adhesive 7 of the windshield 6 is reduced. Smaller and more reliable adhesion performance can be obtained.

FIGS. 5 and 6A and 6B show the fourth embodiment. A glass mounting surface front lower wall surface 321g is provided such that the glass mounting surface 321a of the vehicle body cowl box member 321 is flush with the inside wall surface. Also,
Glass attachment surface 3a at the connecting portion with the front pillar upper 3
To form an end portion 321g 'which is processed so as to contact with. In addition, above the front lower wall surface 321g of the glass mounting surface,
A stopper 321h for adhering the glass 6 may be provided. Therefore, the glass mounting surface 3 of the front pillar upper 3
a and the glass mounting surface 321 of the cowl box member 321
Since a can be on the same plane and the end portion 321g ′ of the cowl box member 321 is coupled so as to cover the front pillar upper 3, the rigidity and strength of the coupling portion can be further enhanced.

FIG. 7 shows the fifth embodiment. Various unit mounting flanges are provided near the front and rear vertical walls 421b and 421c, which are thicker than the other parts of the vehicle body cowl box member 421, and in the vicinity of the corners. For example, wiper pivot 8
A flange 421i for mounting the front side of the front lower wall surface 421g of the glass mounting surface, or an instrument (not shown).
A flange 421j for mounting a placket (not shown) that supports the steering wheel and the steering wheel is provided.
Therefore, since the root portion of the flange has high rigidity, the mounting rigidity and strength of various units can be kept even higher.

FIG. 8 shows a sixth embodiment. A projection 5 for blowing air in the member longitudinal direction of the wall surface portion of the vehicle body cowl box member 521 that intersects with the upper part of the glass mounting surface 521a.
21p and an air outlet 521k at any location of the protrusion 521p, and an air inlet 521m is formed on the other wall surface of the closed cross section 521n formed by the glass mounting surface 521a of the cowl box member 521 and the internal rib 521d. The structure is provided. Therefore, using the closed cross section 521n existing in the entire width of the windshield 6 in the vehicle interior lower direction, the air introduced from the air introduction port 521m is supplied to the inside of the windshield 6 from the air outlet 521k provided at an arbitrary position. Since the structure is for spraying, it can also serve as a defroster for preventing fogging of the windshield 6, and it is possible to reduce the parts of the defroster.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes and the like within the scope not departing from the gist of the present invention. Even if it is included in the present invention.

[0015]

As described above, according to the invention described in claim 1, the structure is such that a cowl box member is provided substantially in the upper rear part of the vehicle body cowl box, and
The cowl box member has a cross-section having a structure in which substantially front and rear vertical walls that are thicker than other parts, a windshield mounting surface provided on the upper inclined portion, and a rib that connects the wall surface facing the lower end of the glass mounting surface to the opposing wall surface are provided. Since the cross section of the cowl box member can be kept small and the dent on the glass mounting surface during bending of the cowl top member can be minimized, it is possible to secure a sufficient air volume for vehicle ventilation performance. Further, it is possible to obtain a more reliable glass bonding performance without deteriorating the habitability. Further, according to the second aspect of the present invention, since it has a substantially cylindrical shape, the bending rigidity and the torsional rigidity are high, it efficiently acts on any load, and the weight can be further reduced. Further, according to the invention as set forth in claim 3, the protrusions on the inside of the glass mounting surface can further suppress deformation such as dents on the glass mounting surface during bending,
More reliable glass bonding performance can be obtained. According to the invention as set forth in claim 4, since the front lower wall surface of the cowl box member on which the glass is mounted is covered so as to cover the front pillar upper, the rigidity and strength of the joint portion between the cowl box member and the front pillar upper are increased. Can be further increased, and the variation of the windshield mounting surface can be further suppressed, so that more reliable glass bonding performance can be obtained. Further, according to the invention of claim 5, since the various unit mounting flanges are provided in the thickened substantially front and rear vertical walls and in the vicinity of the corners, the mounting rigidity and strength of the various units can be kept higher. it can. Further, according to the invention of claim 6, the defroster can be made to function also as a defroster by the projection for guiding air blowing provided on the upper wall surface of the glass mounting surface and the air outlet provided at an arbitrary position. It is possible to reduce.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle body configuration according to a first embodiment of the present invention.

2 is a cross-sectional view of the vehicle body cowl box portion according to the first embodiment of the present invention, which is a cross-sectional view taken along the line AA of FIG. 1. FIG.

FIG. 3 is a sectional view of a cowl box member according to a second embodiment of the present invention.

FIG. 4 is a sectional view at the same position as FIG. 3 in the third embodiment of the present invention.

FIG. 5 is a sectional view taken along the same position as FIG. 3 in the fourth embodiment of the present invention.

6A is a front perspective view of Embodiment 4 of the present invention, and FIG. 6B is a sectional view taken along line BB of FIG. 6A.

FIG. 7 is a sectional view at the same position as FIG. 2 in the fifth embodiment of the present invention.

FIG. 8 is a sectional view at the same position as FIG. 3 in the sixth embodiment of the present invention.

FIG. 9 is a perspective view of a conventional vehicle body front structure.

10 is a cross-sectional view taken along the line CC of FIG.

FIG. 11 is a perspective view of a conventional vehicle body front structure.

[Explanation of symbols]

2 vehicle body cowl boxes 21, 121, 221, 321, 421, 521 vehicle body cowl box members 21a, 121a, 221a, 321a, 421a, 5
21a Glass mounting surface 21b, 121b, 221b, 321b, 421b, 5
21b Thick wall approximately front and rear vertical walls 21c, 121c, 221c, 321c, 421c, 5
21c Thick front and rear vertical walls 21d, 121d, 221d, 321d, 421d, 5
21d rib 6 windshield 7 adhesive for windshield 8 wiper pivot 62 conventional vehicle body cowl box 621 conventional vehicle body vehicle body cowl box closed cross section 721 conventional light alloy vehicle body cowl box member

Claims (6)

[Claims] 1. A cowl box member structure for supporting a lower portion of a windshield of a vehicle body, wherein a skeleton of the vehicle body is mainly composed of a constant cross-section member such as a light alloy extruded material,
A cowl box member is provided substantially above the rear of the vehicle body cowl box, and the cross section of the cowl box member is substantially thicker than the other parts, the front and rear vertical walls, the windshield mounting surface provided on the upper inclined portion, and the lower end of the glass mounting surface. A vehicle body cowl box member structure, characterized in that ribs are provided to connect the wall portions to the opposite wall portions. 2. The vehicle body cowl box member structure according to claim 1, wherein a substantially cylindrical outer shell portion, a windshield mounting surface provided on an upper inclined portion of the outer shell portion, and a portion thicker than other portions are provided. A vehicle body cowl box member structure characterized in that an outer shell and a front and rear vertical wall are provided. 3. The vehicle body cowl box member structure according to claim 1, wherein a protrusion is provided to suppress a dent on the glass mounting surface when the member is bent inside the glass mounting surface. Box member structure. 4. The vehicle body cowl box member structure according to claim 1, wherein the body side is in contact with the glass mounting surface when the front side lower wall surface of the glass mounting surface and the inside of the wall surface are flush with the glass mounting surface. And a wall surface of a lower front portion of the glass mounting surface having an end portion processed so as to contact the glass mounting surface of the vehicle body cowl box member structure. 5. The vehicle body cowl box member structure according to claim 1, wherein various unit mounting flanges are provided near the front and rear vertical walls and corners that are thicker than other portions. Cowl box member structure. 6. The vehicle body cowl box member structure according to claim 1 or 2, wherein an air outlet is provided at an arbitrary position in a member longitudinal direction of a wall surface intersecting with an upper portion of the glass mounting surface. .