JP3362654B2 - Car cowl structure - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile cowl structure. 2. Description of the Related Art Generally, a cowl is provided at a front portion of a vehicle body of an automobile to extend between left and right front pillars to form a lower edge of an opening of a front window and to strengthen the front portion of the vehicle body. I have. In addition, suspension towers are provided on the inner surfaces of the left and right side walls of the engine room, and the top surfaces receive the upper ends of the suspensions from above. [0003] Recently, the front window of an automobile has been tended to be a cab forward in which the inclination angle of the front window glass is moderated in order to widen the visibility of a driver and reduce the air resistance of the front window glass during traveling. is there. In such a cab-forward type vehicle, the lower edge position of the front window moves forward, and accordingly, the cowl also moves to the front position, and the cowl is positioned closer to the suspension tower. FIGS. 4 and 5 show such a cowl structure. FIG. 4 is a sectional view of a substantially central portion of the cowl, and FIG. 5 is a sectional view of an end portion. A cowl 1 for strengthening a vehicle body has a closed cross-sectional structure, and a shelf-shaped cowl (hereinafter, referred to as an open cowl) 1A for installing a wiper or the like is bolted to a front edge thereof. The cowl 1 is located slightly behind the position just above the top surface 41 of the suspension tower 4 and both ends are welded to the left and right front pillars 3. The lower end of the front window glass 5 is adhered to the front edge of the upper surface 15 of the cowl 1. On the other hand, the open cowl 1A is located immediately above the top surface 41 of the suspension tower 4, and its rear edge is bolted to the front edge flange 11 of the cowl 1, and both ends are provided on the upper edges of the left and right side walls of the engine room. Apron upper member. A louver 6 covering the opening is provided at a front edge of the opening cowl 1A, and a rear edge of the louver 6 supports a lower edge of the front window glass 5.
In the figure, reference numeral 8 denotes an engine hood. As shown in FIG. 4, a plurality of slits 61 are formed in the louver 6 provided on the open cowl 1A, and the outside air flowing around the rear edge of the engine hood 8 from the slit 61 opens inside the cowl 1A. It is taken in. Then, the taken outside air is taken into the cowl 1 through a plurality of outside air introduction ports 10 formed in the front surface 12 of the cowl 1, and is sent into the vehicle cabin by an unillustrated air duct connected to the rear surface of the cowl 1. In order to allow rainwater to enter along with the outside air, drain ports for draining rainwater are provided at both ends of the open cowl 1A, and drain ports for draining rainwater entering from the front outside air inlet 10 are provided at both ends of the cowl 1, respectively. Provided. [0006] The fastening of the upper end member of the front suspension to the top surface of the suspension tower 4 is generally bolted from above the top surface of the suspension tower 4 using a tool such as an impact. However, in the conventional cowl structure, since the cowl 1 is installed at a rear position avoiding a position immediately above the top surface of the suspension tower 4, the upper end of the suspension is first bolted to the top surface of the suspension tower 4. Then, open cowl 1
This was possible by attaching A to cowl 1. However, in the conventional cowl structure, if the cowl 1 is further moved forward just above the suspension tower 4, it becomes difficult to fasten the suspension and the suspension tower 4. Therefore, in order to remove the restriction on the forward movement of the lower edge of the front window and further move the lower edge of the front window forward, the height of the suspension tower is reduced, and the cowl is placed directly above the suspension tower. It is conceivable to provide a work space between the top surface of the suspension tower and the cowl where a tool such as a bent bolt fastening impact can be used. In addition, the stroke of the suspension is restricted, and the riding comfort of the vehicle is deteriorated. On the other hand, without changing the suspension tower, it is also conceivable to reduce the cross section of the cowl and arrange it directly above the suspension tower to secure the work space between the top surface of the suspension tower and the cowl, In this case, the strength of the vehicle body may be reduced, and the damping effect of the cowl on the vehicle body may be reduced. In addition, when the cowl has a small cross section, it is difficult to install an outside air inlet having a required size. Accordingly, the present invention provides a cab-forward type vehicle that does not restrict forward movement of the lower edge of the front window, does not reduce the strength of the cowl, and mounts the suspension to the suspension tower. The object of the present invention is to achieve a cowl structure that does not impair the performance. SUMMARY OF THE INVENTION The present invention is a cowl having a closed cross section which is provided between left and right front pillars of an automobile to form a lower edge of a front window, and which has an outside air inlet on a front surface thereof. In the cowl, the cowl has its left and right ends positioned directly above the suspension tower installed on the left and right side walls of the engine room, and the above both ends have rear edges protruding rearward to the rear end of the suspension tower. And, the bottom surface of the both ends is formed so that the surface facing the top surface of the suspension tower in front of the rear edge portion is raised in a raised manner, and between the facing surface and the top surface of the suspension tower. A work space required for bolting the upper end member of the suspension is secured on the top surface, and rainwater or the like that has infiltrated into the cowl from the outside air inlet through the rear edge portion is provided. Form a drain to discharge outside the cowl. Even if the both ends of the cowl are installed directly above the suspension tower, the bottom surface of the cowl is formed in a raised shape to secure a predetermined space between the cowl and the top surface of the suspension tower. Does not hinder the workability of mounting the suspension to the suspension tower. Further, the rear edge of the cowl having a low bottom serves as a drainage groove for discharging rainwater or the like that has entered the cowl from the outside air introduction port to the outside of the cowl. In addition, at both ends of the cowl, the size of the cross section necessary for maintaining strength is secured. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 3, upper left and right side walls 7 (only one of which is shown) of an engine room of a vehicle are provided with an apron upper having a closed cross-section structure. A member 2 is provided, and a rear end of the apron upper member 2 is connected to each of the left and right front pillars 3.
A cylindrical suspension tower 4 whose lower side is open is installed on the inner side of the side wall 7, and the upper end of the suspension tower 4 is connected to the apron upper member 2. A front suspension (not shown) is provided inside the suspension tower 4. The upper end member 42 of the suspension is connected to the top surface 41 of the suspension tower 4 by a bolt member, and the top surface 41 of the suspension tower 4 receives the upper end of the suspension from above. A cowl 1 extending in the vehicle width direction is provided at a lower edge of a front window opening formed between the left and right front pillars 3. The cowl 1 has a closed cross-sectional structure composed of an upper panel 1a and a lower panel 1b. Both ends are closed, and both ends of the closed cowl 1 are connected to a joint between the left and right apron upper members 2 and the front pillar 3. Are combined. The cowl 1 has an arch-like shape that protrudes forward as a whole along the lower edge of the front window glass 5 (FIG. 4) provided in the front window opening.
Both ends are installed immediately above the right and left suspension towers 4. The right and left ends of the cowl 1 are substantially trapezoidal in cross section.
A front edge flange 11 connecting the front edges of the upper panel 1a and the lower panel 1b extends linearly in the longitudinal direction of the cowl 1 from the center of the cowl 1, and is located at a position crossing the front half of the top surface 41 of the suspension tower 4. . The rear part of both ends of the cowl 1 is formed so as to gradually project rearward toward the terminals at both ends, and the rear edge is formed in a curved shape along the rear end of the suspension tower 4, and the width of the terminal of the cowl 1 is provided. Is almost the same as the central part. Further, the bottom surface 13 of the end portions of the cowl 1, leaving the rear edge gradually increases toward the terminal, the cowl
1 has a raised shape higher than the bottom surface at the center . It is assumed that it descends near the terminal and is almost the same height as the cowl 1 at the center. The raised bottom faces the top surface 41 of the suspension tower 4, and a large space S is formed between the facing surface 131 and the top surface 41 in the vertical direction. As a result, the rear edges of both ends of the cowl 1 are formed with U-shaped grooves extending in the longitudinal direction of the cowl 1 along the rear end of the suspension tower 4 . This groove extends to the opening 14 formed at the closed end of the end of the cowl 1 and forms a drain groove 132 communicating with the apron upper member 2. A terminal 133 of the drain groove 132 is projected outside the cowl 1, and the terminal 133 protrudes into the apron upper member 2 from an opening 21 formed on an inner surface of the apron upper member 2. An outside air inlet 10 is formed on the front surface 12 of the cowl 1 at a predetermined interval in the longitudinal direction. The lower end of the front window glass 5 is adhered to the front edge of the upper surface 15 of the cowl 1 along the front edge. The cowl 1 is provided with an open cowl 1A along the front edge flange 11 thereof. The opening cowl 1A is attached after bolting the upper end of the suspension to the top surface 41 of the suspension tower 4, and is formed in a shelf shape opening upward.
Thereafter, the edge is overlapped with the front edge flange 11 of the cowl 1 and fixed by bolting. Both ends of the opening cowl 1A are bolted to the left and right apron upper members 2. A louver 6 is provided at the upper edge of the front wall of the open cowl 1A to cover the opening of the open cowl 1A. The louver 6 is a synthetic resin plate having a plurality of slits 61 formed thereon, and the rear edge thereof supports the lower edge of the front window glass 5. Also,
The upper edge of the front wall of the opening cowl 1A receives the rear end of the engine hood 8 from below via the weather strip 62 (FIG. 4). The upper end member 42 of the suspension is coupled to the top surface 41 of the suspension tower 4 which receives the upper end member 42 from above by bolting the upper end member 42 from above the top surface 41 with a bolting impact 9 or the like. . This bolting work is performed by opening the cowl 1
This is done prior to installing A. In this case, cowl 1
A sufficient working space S is ensured between the opposing surface 131 of the bottom surface 13 and the top surface 41 of the suspension tower 4, and the bolting impact 9 can be inserted into the space S, so that the bolting operation is easy. Can be made. During traveling of the vehicle, outside air flowing around the rear edge of the engine hood 8 is opened from the slit 61 of the louver 6 and is taken into the cowl 1A. The outside air taken into the open cowl 1A is taken into the cowl 1 through a plurality of outside air introduction ports 10 formed in the front surface 12 of the cowl 1,
The air is sent into the passenger compartment by an air duct (not shown) connected to the rear surface of the cowl 1. When rainwater enters the cowl 1 together with the inhaled outside air during running on rainy weather or the like, the rainwater flows into the apron upper member 2 through the drain groove 132 and is not provided on the apron upper member 2. Is drained out of the vehicle through the drain holes. Also, the rainwater accumulated in the open cowl 1A is drained out of the vehicle from drain ports formed at both ends of the open cowl 1A. According to the cowl structure of the present invention, the cowl can be moved forward without lowering the strength of the cowl itself and without impairing the workability of attaching the suspension to the suspension tower. It is possible to cope with the cab forward of the vehicle body.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a main part of a cowl structure of the present invention. FIG. 2A is a front view of a main part of the cowl structure of the present invention, and FIG. 2B is a plan view of the main part. FIG. 3 shows a cowl structure according to the present invention, taken along the line III-III in FIG. 2 (B).
It is sectional drawing in the position along a line. FIG. 4 is a sectional view of a central portion of the cowl. FIG. 5 is a sectional view of a conventional cowl structure corresponding to FIG. [Description of Signs] 1 cowl 10 outside air inlet 13 bottom 131 facing surface 132 drain groove (rear edge) 3 front pillar 4 suspension tower 41 top 42 suspension upper end member 5 front windshield 7 engine room side wall 9 bolt tightening impact S Work space

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-71267 (JP, A) JP-A-9-109929 (JP, A) JP-A-3-208781 (JP, A) JP-A-61-1986 253267 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B62D 25/08

Claims (1)

(1) A cowl having a closed cross section that is provided between left and right front pillars of an automobile and forms a lower edge of a front window, and has a front side provided with an outside air introduction port. in, cowl its left and right end portions, brought directly above the suspension tower installed in the left and right side walls of the engine room, the both end portions are then exits span the edge rearward to the rear end position of the suspension tower, the suspension Tawa
-The rear edge and the cowl have a curved shape along the rear end , and the bottom surfaces of the both ends are raised so that the surface facing the top surface of the suspension tower ahead of the rear edge is raised .
It is formed higher than the bottom surface of the central part , and a work space necessary for bolting the upper end member of the suspension is secured between the facing surface and the top surface of the suspension tower. A cowl structure for an automobile, wherein a drain groove for discharging rainwater or the like entering the cowl from the outside air inlet to the outside of the cowl is formed.