JP5640628B2 - Front compartment structure - Google Patents

Description

  The present invention relates to a front compartment structure such as an engine room provided at the front of a vehicle body of a vehicle.

  2. Description of the Related Art Conventionally, a front compartment structure provided at the front of a vehicle body is known (see, for example, Patent Document 1).

  In such a conventional front compartment structure, a pair of left and right side member members are mainly provided along the front-rear direction of the front portion of the vehicle body.

  From the side member members, left and right strut towers for accommodating a front suspension device such as a shock absorber are erected integrally.

  Moreover, in order to improve vehicle body rigidity, the strut tower bar member is installed ranging between these right and left strut towers.

  Then, by connecting the central part in the vehicle width direction of the strut tower bar member to the dash panel member that partitions the front compartment and the passenger compartment, the mounting rigidity is set symmetrically in the vehicle width direction. The rigidity of the vehicle body obtained by attaching the strut tower bar member is also configured to be symmetrical.

Special table 2009-29335

  However, in such a conventional front compartment structure, an operation pedal is arranged at the foot of the driver's seat in the passenger compartment.

  The mounting bracket members of these operation pedals are mounted across the dash panel member and the steering member member extending along the vehicle width direction, and on the driver's seat side where these operation pedals are arranged. There is a problem that the vehicle body rigidity is higher than the vehicle body rigidity on the passenger side, and the balance between the left and right vehicle body rigidity is not uniform in the entire vehicle body.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a front compartment structure in which the balance of vehicle body rigidity can be made nearly symmetrical in the vehicle width direction.

  In order to achieve the above object, in the front compartment structure of the present invention, the upper part of the strut housing is provided on the side of the dash panel member on the side of the vehicle width direction right side portion and vehicle width direction left side portion where the vehicle body rigidity is high. The attachment rigidity of the attachment portion of the reinforcing cover member connected to the is low rigidity.

  In the front compartment structure of the present invention, even if the vehicle body rigidity on the driver's seat side on which the operation pedal or the like is disposed is higher than the vehicle body rigidity on the passenger seat side, the vehicle is positioned in front of the vehicle corresponding to this high rigidity portion. The mounting rigidity of the mounting part connected to each upper part of the strut housing located can be made low.

  For this reason, in the whole vehicle body, the balance of the vehicle body rigidity can be set so as to be symmetrical and close to each other.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a front portion of a vehicle for explaining an overall configuration in a front compartment structure of an embodiment of the present invention. It is a front compartment structure of an embodiment, and is a top view of the vehicle front part explaining the whole composition. It is the front compartment structure seen from the vehicle front direction in the front compartment structure of an embodiment. It is a front compartment structure of an embodiment, and is an exploded perspective view of the front part of a vehicle explaining the whole composition. It is a top view explaining the structure of the cowl top panel attachment part periphery in the front compartment structure of embodiment. It is a top view explaining the structure of the cowl top panel attachment part periphery in the front compartment structure of embodiment. FIG. 2 is a front view of the front compartment structure of the embodiment, showing a configuration near the upper surface portion of the strut housing on the left side of the vehicle body, as viewed from the front of the vehicle. FIG. 13 is a vertical sectional view at a position corresponding to a position along the line FF in FIG. 12 showing a configuration near the upper surface portion of the strut housing in the front compartment structure of the embodiment. FIG. 4 is a front view of the front compartment structure according to the embodiment, showing the structure near the upper surface of the strut housing on the right side of the vehicle body, as viewed from the front of the vehicle. It is a top view of the reinforcement cover member used for the front compartment structure of an embodiment. It is a front view of the reinforcement cover member used for the front compartment structure of an embodiment. It is the perspective view which looked at the reinforcement cover member used for the front compartment structure of an embodiment from vehicles slanting back direction. FIG. 3 is a cross-sectional view at a position along the line AA in FIG. 2 in the front compartment structure of the embodiment. FIG. 4 is an enlarged exploded perspective view showing a configuration of a portion B in FIG. 3 in the front compartment structure of the embodiment. FIG. 3 is a cross-sectional view taken along a line CC in FIG. 2 in the front compartment structure according to the embodiment. FIG. 4 is an enlarged exploded perspective view showing a configuration of a portion D in FIG. 3 in the front compartment structure of the embodiment.

  Hereinafter, a front compartment structure according to an embodiment of the present invention will be described with reference to the drawings.

  First, the overall configuration will be described with reference to FIGS. 1 to 16. In the front compartment structure of this embodiment, as shown in FIG. 1, the vehicle in the lower part of the front compartment E space located at the front of the vehicle body is shown. A pair of side member members 1 and 1 extend along the longitudinal direction in the vehicle front-rear direction on both the left and right sides in the width direction.

  Further, as shown in FIG. 4, a dash panel member 2 is interposed between the front compartment E and the passenger compartment R, and the interior space of the front compartment E is separated.

  As shown in FIG. 1, in the passenger compartment R space, the driver seat side DS space and the passenger seat side HS space are provided on the left and right sides of the center tunnel portion ST in the center in the vehicle width direction. The dash panel member 2 on the driver seat side DS is provided with an operation pedal member P made up of an accelerator pedal member, a brake pedal member, and the like.

  Further, the rear end portions of these side member members 1 and 1 become extension side members 3 and 3, respectively, and are inclined so as to sink into the lower side of the dash panel member 2, and the rear portions thereof are not shown. It extends to the lower side of the floor panel.

  Further, hood ridge member members 4, 4 extend in the vehicle front-rear direction at the upper portions on both sides in the vehicle width direction of the front compartment E, and a rear end portion serving as a mounting base portion of the hood ridge member members 4, 4. The dash side panel members 5 and 5 are joined between the left and right edges of the dash panel member 2.

  In this embodiment, the hood ridge member 6 is formed by the hood ridge member member 4 and the dash side panel member 5.

  In this embodiment, the mounting portion 7c extending toward the rear of the vehicle is fixed to the central portion of the upper portion of the dash panel member 2 by mounting bolts 23, 23 as fixing members, so that the reinforcing cover member A cowl top panel 7 constituting a part of 8 is mounted.

  That is, the cowl top panel 7 extends from the mounting portion 7c at the center in the vehicle width direction so as to extend leftward and rightward in a bifurcated manner toward the left and right sides in the front compartment E space. Vertical wall portions 7d and 7d surrounding the rear periphery of the front compartment E are integrally provided.

  In the front suspension (not shown), the wheel hub to which the front wheels are attached is fixed to the knuckle spindle. The knuckle spindle is supported on the vehicle body side so as to be swingable up and down by a suspension arm, and a strut is provided as a shock absorber for absorbing the vertical swing.

  The upper end portion of the strut is attached to the attachment portion 11 of the strut housing 10 on the vehicle body side in contact with the lower surface.

  The strut housing 10 has a shape that bulges upward with a mounting portion 11 that abuts the upper end of the strut from below as a top wall. The strut housing 10 mainly has an upper side, a front side, a rear side, and a vehicle width direction center. The side is covered.

  In addition, adjustment holes 11a and 11a are formed in the central portions of the mounting portions 11 and 11 positioned on the left and right sides, respectively, and the cowl is formed on the upper surface side periphery of the mounting portions 11 and 11. Attaching ribs 11b and 11b to which the strut support bar member 20 constituting the reinforcing cover member 8 is attached together with the top panel 7 so as to be integrated with each other.

  As shown in FIGS. 13 to 16, the mounting ribs 11b and 11b have L-shaped front end portions 7a and 7a of the left and right vertical wall portions 7d and 7d of the cowl top panel 7 and a cross-sectional shape in the vehicle width direction. The mounting bracket members 21 and 22 are fixed together by a bolt member 13 and a nut member 14.

  As shown in FIGS. 13 to 16, the mounting bracket members 21 and 22 are integrally formed with support mounting surfaces 21a and 22a extending along the vehicle width direction so as to be orthogonal to the mounting rib 11b. Has been.

  A strut support bar member 20 as shown in FIGS. 10 to 12 is fastened to the reinforcing cover member 8 along the front edge portion 7 b of the cowl top panel 7.

  The strut support bar member 20 is configured such that front end portions 20a and 20b positioned at both left and right ends are fastened to the support mounting surfaces 21a and 22a by one or two sets of bolt members 13 and nut members 14. ing.

  In this embodiment, the front end portion 20a located on the right side of the vehicle is fastened by a set of bolt members 13 and a nut member 14, and two sets of the bolts as in the front end portion 20b located on the left side of the vehicle. By the members 13 and 13 and the nut members 14 and 14, the mounting rigidity is set to be lower than that of the fastened portion.

  For this reason, as shown in FIG. 1, the operation pedal member P, which is the side of the dash panel member 2 on the side of the vehicle width direction right side portion and vehicle width direction left side portion where the vehicle body rigidity is high, is mounted. The mounting rigidity of the mounting portion of the reinforcing cover member 8 connected to the mounting portion 11 of the strut housing 10 on the right side of the vehicle body, which is the driver's seat side DS, is configured so as to have a low rigidity. ing.

  Further, the strut support bar member 20 of this embodiment is a vehicle that has a substantially horizontal flat plate shape so as to follow the shape of the front edge portion 7b of the cowl top panel 7, as shown in FIGS. A central portion 20c in the width direction is extended in the longitudinal direction and brought into contact with the lower surface side of the front edge portion 7b, and a pair of left and right bolt members 13, 13 and nut members 14, 14 are used. Are fastened together.

  In the strut support bar member 20 of this embodiment, the bolt members 13 are screwed to the right arm portion 20d extending from the central portion 20c to the right front of the vehicle at a predetermined interval. The female screw portions 24... Are integrally provided at three locations.

  Further, in the strut support bar member 20 of this embodiment, the bolt members 13 are screwed to the left arm portion 20e extending from the central portion 20c in the left front direction of the vehicle at a predetermined interval. Four female screw portions 24 are integrally provided at four locations.

  Therefore, as shown in FIG. 8, when the strut support bar member 20 is fastened to the front edge portion 7b of the cowl top panel 7 using the bolt members 13..., The right arm portion 20d is replaced with the left arm portion 20e. Since it is screwed by one bolt member 13... Less than that, the mounting rigidity can be reduced.

  Further, as shown in FIG. 10, the width direction dimension W1 of the right arm portion 20d of the strut support bar member 20 is set to be smaller than the width direction dimension W2 of the left arm portion 20e (W1 <W2). Thus, the strength of the strut support bar member 20 is configured such that the right arm portion 20d is lower than the left arm portion 20e and has low rigidity.

  In addition, in this embodiment, as shown in FIGS. 13 to 16, the front end portions 20a and 20b of the right arm portion 20d and the left arm portion 20e are fixed to the interposed mounting bracket members 21 and 22, respectively. As shown in FIG. 2 or 5, the positions of the attachment surfaces 21 a and 22 a are offset in the vehicle front-rear direction, and the front end portion 20 a position is set in front of the vehicle rather than the front end portion 20 b position.

  Therefore, as shown in FIG. 5, the bolt member 13 and the nut member 14 provided at the front end portion 20a of the right arm portion 20d are positioned at the bolt member 13 and the nut member 14 provided at the front end portion 20b of the left arm portion 20e. The right arm portion 20d is offset by a dimension d1 so as to be displaced from the center of the opening of the adjustment holes 11a, 11a formed in the attachment portions 11, 11 of the strut housings 10, 10 in the vehicle longitudinal direction from the position of Is set to be longer than the overall length of the left arm portion 20e.

  Next, the effect of the front compartment structure of this embodiment will be described.

  In the front compartment structure of this embodiment, as shown in FIG. 1, in the vehicle width direction of the dash panel member 2, on the side where the vehicle body rigidity is increased by the operation pedal member P provided on the driver's seat side. The reinforcing cover member 8 connected to the mounting portion 11 located on the upper side of the strut housing 10 on the right side of the vehicle body at the front position of the vehicle via the mounting bracket member 21 has low rigidity. .

  That is, in this embodiment, the front end 20a of the strut support bar member 20 located on the right side of the vehicle is fastened by a set of bolt members 13 and nut members 14, and the front end 20b located on the left side of the vehicle. As described above, the two sets of bolt members 13 and 13 and the nut members 14 and 14 are configured such that the mounting rigidity is lower than that of the fastened side.

  For this reason, even if the vehicle body rigidity is higher than the vehicle body rigidity on the passenger seat side by the setting of the operation pedal member P, the strut housing located in front of the vehicle corresponding to the high rigidity side on the driver seat side. The attachment rigidity of the attachment part connected to each upper part of 10 can be easily made low.

  Therefore, in the entire vehicle body, the balance of the vehicle body rigidity can be adjusted so as to be symmetrical and close to each other. In this embodiment, the reinforcing cover member 8 is integrated with the front edge portion 7c of the cowl top panel 7 with the strut support bar member 20 by bolt members 13 as a plurality of fastening members. It is concluded to.

  Therefore, the balance of rigidity of the reinforcing cover member 8 can be easily adjusted. In this embodiment, the strut support bar member 20 is formed on the front edge portion 7b of the cowl top panel 7 as shown in FIG. When fastening the right arm portion 20d, the right arm portion 20d can be screwed and fixed by the bolt members 13... Less than the left arm portion 20e.

  In addition, the width direction dimension W1 of the right arm portion 20d of the strut support bar member 20 is set smaller than the width direction dimension W2 of the left arm portion 20e (Wj1 <W2), and the strength of the strut support bar member 20 is increased. The portion 20d is lower than the left arm portion 20e and has low rigidity.

  For this reason, the rigidity of the mounting rigidity and the rigidity of the reinforcing cover member 8 itself can be given regardless of the restrictions on the installation space due to the installation of the operation pedal member P, the center tunnel part ST, or the equipment in the front compartment E. Setting is possible, and the left and right balance can be made closer to each other.

  Further, in this embodiment, as shown in FIGS. 13 to 16, the front end portions 20a and 20b of the left and right arm portions 20e and 20d are fixed to the interposed mounting bracket members 21 and 22, respectively. As shown in FIG. 2 or 5, the positions of the attachment surfaces 21 a and 22 a are offset in the vehicle front-rear direction, and the front end portion 20 a position is located in front of the vehicle rather than the front end portion 20 b position.

  Therefore, as shown in FIG. 5, the bolt member 13 and the nut member 14 provided at the front end portion 20a of the right arm portion 20d are positioned at the bolt member 13 and the nut member 14 provided at the front end portion 20b of the left arm portion 20e. The front and rear of the straight line connecting the center axis of the opening, deviating from the opening center of the adjustment holes 11a and 11a formed in the mounting portions 11 and 11 of the strut housings 10 and 10 by the dimension d1 in the vehicle longitudinal direction from the position of Are provided alternately.

  Therefore, the full length dimension of the right arm portion 20d is set to be longer than the full length dimension of the left arm portion 20e, and the strength of the right arm portion 20d of the strut support bar member 20 is further increased to the strength of the left arm portion 20e. In comparison, it can be small and have low rigidity.

  In this embodiment, as shown in FIG. 14, the front end 20a is fixed to the vehicle front side of the support mounting surface 21a at one point by a bolt member 13 and a nut member 14.

  For this reason, as shown in FIG. 16, similarly, the two sets of bolt members 13 and nut members 14 are used to input from the front end portion 20b fixed to the vehicle rear side surface of the support mounting surface 21b in a surface contact state. The load is likely to act in the peeling direction between the front end portion 20a and the support attachment surface 21a.

  Therefore, the attachment strength of the right arm portion 20d of the strut support bar member 20 can be made smaller and less rigid than the attachment strength of the left arm portion 20e.

  Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to the front compartment structure of this embodiment, and is designed to the extent that it does not depart from the gist of the present invention. Modifications are included in the present invention.

  That is, in the front compartment structure of the above-described embodiment, the front end portion 20a of the strut support bar member 20 located on the right side of the vehicle is fastened by the pair of bolt members 13 and the nut member 14, and is located on the left side of the vehicle. Like the front end 20b, the two sets of bolt members 13 and 13 and the nut members 14 and 14 are configured so that the mounting rigidity is lower than that of the fastened side. For example, the front end 20a is fastened by two sets of bolt members 13 and nut members 14 ..., and the front end 20b located on the left side of the vehicle has three or more sets of the bolt members 13 and nut members. 14..., As long as the number of fastening members used for the attached part is set to be small, such as being fastened. Quantity of members, shape and material or position etc. These are fastened is not limited in particular.

  In the above-described embodiment, the front compartment structure of the present invention has been described using a front compartment structure applied to a front compartment structure such as an engine room located at the front of the vehicle body. For example, the front compartment of the front of the vehicle body is described. The drive source provided in the vehicle is not limited to an internal combustion engine such as an engine, and may be an electric vehicle, a hybrid car, or the like. It may be used.

E Front compartment R Crew compartment DS Driver's seat side (high body rigidity side)
HS Passenger side (Low body rigidity side)
1, 1 Side member member 2 Dash panel member 7 Cowl top panel 8 Reinforcement cover member 10, 10 Strut housing 11, 11 Mounting part (upper part)
13, 23 Bolt member (fastening member)
14 Nut member (fastening member)
20 Strut support bar member 20a, 20b front end

Claims (7)

Reinforcement cover members that connect the upper portions of the pair of strut housings located on the left and right sides of the front compartment space in the vehicle width direction are provided, and the front compartment space and the occupant located behind the front compartment relative to the front compartment A front compartment structure in which the reinforcing cover member is extended and connected to the dash panel member that partitions the chamber,
Of the dash panel member on the right side in the vehicle width direction and the left side in the vehicle width direction, on the side where the vehicle body rigidity is high, mounting the mounting portion of the reinforcing cover member connected to each upper portion of the strut housing The rigidity is low rigidity ,
The reinforcing cover member includes a strut support bar member that connects the upper portions of the pair of strut housings, and the strut support bar member is fastened to a front edge portion using a plurality of fastening members, and the dash panel member It has mainly a cowl top panel member that extends toward the rear of the vehicle, and is mainly configured.
The left and right front end portions of the strut support bar member are made to have low rigidity by setting the mounting rigidity of the mounting portions respectively connected to the upper portion of the strut housing by reducing the number of fastening members used for the mounting portions. The front compartment structure. The strut support bar member, front compartment structure according to claim 1 Symbol placing the number of the fastening member, characterized by a set smaller and a low rigidity for fastening the front edge with a plurality of fastening members. Reinforcement cover members that connect the upper portions of the pair of strut housings located on the left and right sides of the front compartment space in the vehicle width direction are provided, and the front compartment space and the occupant located behind the front compartment relative to the front compartment A front compartment structure in which the reinforcing cover member is extended and connected to the dash panel member that partitions the chamber,
  Of the dash panel member on the right side in the vehicle width direction and the left side in the vehicle width direction, on the side where the vehicle body rigidity is high, mounting the mounting portion of the reinforcing cover member connected to each upper portion of the strut housing The rigidity is low rigidity,
The reinforcing cover member includes a strut support bar member that connects the upper portions of the pair of strut housings, and the strut support bar member is fastened to a front edge portion using a plurality of fastening members, and the dash panel member It has mainly a cowl top panel member that extends toward the rear of the vehicle, and is mainly configured.
A front compartment structure characterized in that the number of fastening members that fasten the strut support bar member to a front edge portion using a plurality of fastening members is set to be low so as to have low rigidity. The left and right front end portions of the strut support bar member are made to have low rigidity by setting the mounting rigidity of the mounting portions respectively connected to the upper portion of the strut housing by reducing the number of fastening members used for the mounting portions. front compartment structure according to claim 3 Symbol mounting characterized. In the vehicle width direction of the dash panel member, the side on which the vehicle body rigidity is high is the side on which the operation pedal on the driver seat side is disposed, and the reinforcing cover corresponding to the passenger seat side on the opposite side in the vehicle width direction The front compartment structure according to any one of claims 1 to 4, wherein the mounting rigidity corresponding to the driver's seat side is lower than the mounting rigidity of the mounting portion of the member. Mounting bracket members are interposed in mounting portions where the left and right front end portions of the strut support bar member are respectively connected to the upper portion of the strut housing, and the mounting position is offset in the vehicle longitudinal direction. The front compartment structure according to any one of claims 1 to 5 , wherein the front compartment structure is rigid. The front compartment structure according to any one of claims 1 to 6, wherein the strut support bar member has a low rigidity by setting a low strength.