JP4847417B2 - Auto body front structure - Google Patents

Description

  The present invention relates to a vehicle body front structure of an automobile, and more particularly to a vehicle body front structure including a wheel house upper member and a dashboard upper member.

  There is a cowl box portion that extends in the vehicle width direction along the lower edge of the windshield glass at the front of the automobile. The cowl box portion forms an air intake portion (outside air intake duct portion) that guides outside air from the louver portion of the cowl top to the vehicle-mounted air conditioner. Rainwater that enters the cowl box part from the louver part of the cowl top is drained to the outside by a concave drainage groove formed in the dashboard upper part located below the cowl top, so that rainwater etc. does not enter the air intake part. It has become.

  In such a vehicle body front structure, it is necessary to devise so that the hot air in the engine room does not pass through the drain groove portion of the dashboard upper to the air intake portion of the in-vehicle air conditioner.

In contrast, the dash side member covers the air intake hole of the in-vehicle air conditioner formed in the dash side panel disposed at the side of the dash panel that partitions the engine room and the vehicle compartment by the dash side member. There is one in which a dash side member that is a reinforcing member is also used as a cover member (partition wall member) for an air intake hole by attaching the member to the dash side panel (for example, Patent Document 1).
JP-A-9-267773

  However, the use of the dash side member as the partition member has a drawback that workability is poor because the partition member is assembled by welding or bolting in the main line of the vehicle body assembly. Further, since the vehicle body reinforcement is performed only by the partition member, the impact load absorption at the time of the frontal collision and the transmission to the rear of the vehicle body are poor.

  The problem to be solved by the present invention is to install a partition member for preventing hot air intrusion without deteriorating the workability of the main line of the vehicle body assembly, and also to absorb the impact load at the time of the frontal collision and the rear of the vehicle body To improve communication to

The vehicle body front structure according to the present invention is a wheel that extends in the longitudinal direction of the vehicle body and is joined to the front end of a front side pillar having a closed cross-sectional shape extending in the vertical direction at the rear end, and inclined forward and downward from the joint. The wheel house upper member includes an inner member in the vehicle width direction and an outer member in the vehicle width direction that are joined to each other. An opening through which a vehicle width direction end of a drainage groove provided in the dashboard upper penetrates is formed in the inner member of the wheel house upper member, and an end of the drainage groove in the vehicle width direction. with partition wall member having an upper arm part covering the upper portion is installed in the Autamenba of the wheel house upper member, Tip of the front side pillar side of the serial upper piece is pressed against the front side pillars, a structure in which no gap between the front side pillar side of the distal end portion of the upper piece and the front side pillar ing.

In the vehicle body front structure according to the present invention, preferably, the cross-sectional shape of the end portion in the vehicle width direction of the drainage groove portion is U-shaped, and the partition wall member is L-shaped upside down. The partition member covers the front side in the longitudinal direction of the vehicle body in addition to the upper portion of the drainage groove.

  According to the vehicle body front structure of the present invention, the wheel house upper member is constituted by the inner member on the vehicle width direction inner side and the outer member on the vehicle width direction outer side to form a closed cross-sectional shape, and is provided on the dashboard upper. The partition member that covers the end of the drainage groove in the vehicle width direction functions as a partition member for preventing hot air from entering. Since this partition member is attached to the outer member, the partition member can be attached to the outer member in advance by welding, and the outer member with the partition member can be provided to the main line of the vehicle body assembly.

  This eliminates the need for welding and assembling of the partition wall member on the main line, and the installation of the partition wall member for preventing hot air intrusion does not deteriorate the workability of the main line of the vehicle body assembly. This enables the front windshield glass to move forward in the vehicle body, making it possible to cope with vehicle body designs that make it difficult to weld and assemble the bulkhead members on the main line, and contributes to the improvement of the freedom of vehicle body design.

  In addition, the wheel house upper member is composed of an inner member and an outer member to form a closed cross-sectional shape, and the front pillar front joint with a closed cross-sectional shape extending vertically is joined, so that the impact load when the wheel house upper member collides with the front part It will transmit well to the front side pillar at the rear of the vehicle body while absorbing the noise, improving the front collision resistance.

  Embodiments of a vehicle body front structure according to the present invention will be described below with reference to FIGS. In FIG. 2 and subsequent figures, since the vehicle body front part structure has a substantially symmetrical configuration, the right side structure as viewed from the passenger compartment will be described, and the description of the left side structure will be omitted.

  As shown in FIG. 1, the vehicle body front part structure of the present embodiment has left and right front side members 11, 12 extending in the longitudinal direction of the vehicle body, and front ends of the front side members 11, 12 as skeleton strength members. A front bumper beam 15 connecting the extension members 13 and 14 joined to each other to each other, and an engine room 16 is defined inside these members.

  The lower ends of the wheel house upper members 19 and 20 are joined to the outer sides of the front end portions of the left and right front side members 11 and 12 by connecting members 17 and 18, respectively. The lower ends of the left and right front side pillars 21 and 22 are joined to the upper ends of the wheel house lower upper members 19 and 20. In other words, the wheel house upper members 19 and 20 are respectively joined to the front ends of the left and right front side pillars 21 and 22 having a closed cross section extending in the longitudinal direction of the vehicle body and extending in the vertical direction at the rear end. The front end is inclined further forward and downward, and the front end is joined to the lower end side of the wheel house upper members 19 and 20 by the connecting members 17 and 18.

  Between the left and right front side members 11, 12 and the wheel house upper members 19, 20, the upper side is joined to the wheel house upper members 19, 20, and the lower side is joined to the front side frames 11, 12. Front wheel houses 23 and 24 are provided. The front wheel houses 23 and 24 are integrally formed with left and right damper housings 25 and 26.

  The left and right end portions of the dashboard upper 27 extending substantially horizontally in the vehicle width direction are joined to the upper surface portions of the left and right damper housings 25 and 26 in a manner spanned between the two. A dashboard lower 28 is provided below the dashboard upper 27, and defines an engine room 16 and a vehicle compartment 29.

  A windshield support member 30 that holds the lower edge of the front windshield glass (not shown) is provided above the dashboard upper 27. Similarly, the windshield support member 30 extends substantially horizontally in the vehicle width direction, and the left and right ends are connected to the left and right wheel house upper members 19 and 20 and the left and right front side pillars 21 and 22 by dashboard side members 31 and 32, respectively. It is joined.

  The dashboard upper 27 and the windshield support member 30 cooperate with a cowl top, a dashboard upper lid, etc., which are formed with a louver for taking in outside air (not shown), so that an in-vehicle air conditioner (not shown) is provided. A cowl box (outside air intake duct portion) for guiding outside air is defined.

  As shown in FIGS. 2 to 6, the wheel house upper member 20 is composed of an inner member 20 </ b> A on the inner side in the vehicle width direction and an outer member 20 </ b> B on the outer side in the vehicle width direction that are joined together to form a closed cross-sectional shape. Yes. Thereby, the wheel house upper member 20 and the front side pillar 22 are joined by closed cross-sectional shape.

  The dashboard upper 27 is press-molded with a drain groove 33 having a U-shaped cross section extending in the vehicle width direction. The end of the drainage groove 33 of the dashboard upper 27 passes through an opening 34 formed in the inner member 20 </ b> A of the wheel house upper member 20. The end portion in the vehicle width direction of the drainage groove portion 33 is in the closed cross-sectional shape portion (hollow portion) of the wheel house upper member 20, and rainwater and the like collected in the drainage groove portion 33 has the end portion in the vehicle width direction at the wheel house upper member 20. In the closed cross-sectional shape portion, and is discharged out of the vehicle through a drain hole 38 provided in a lower portion of the wheel house upper member 20.

  A partition wall member 35 is attached to the outer member 20 </ b> B of the wheel house upper member 20. The partition member 35 is formed by bending a steel plate into an upside down L shape ("shape"), and is welded to the inner surface of the outer member 20B with welding points A, B, C set in welding allowances 36, 37. The welding of the partition member 35 to the outer member 20B can be performed in advance as a pre-process before the outer member 20B is carried into the main line of the vehicle body assembly.

  The partition member 35 covers the upper part of the drainage groove part 33 of the dashboard upper 27 with the upside-down L-shaped upper piece part 35A, and covers the front side of the drainage groove part 33 of the dashboard upper 27 in the vehicle longitudinal direction with the vertical piece part 35B. The tip of the upper piece portion 35A is a curl forming portion 35C. The curl forming portion 35 </ b> C is pressed against the front side pillar 22 so that a gap is not formed between the upper piece portion 35 </ b> A of the partition wall member 35 and the front side pillar 22.

  The partition member 35 thus covers the end portion in the vehicle width direction of the drain groove 33 of the dashboard upper 27 and functions as a partition member for preventing hot air from entering the cowl box (outside air intake duct portion). Since the partition member 35 is attached to the outer member 20B of the wheel house upper member 20, the partition member 35 is previously attached to the outer member 20B by welding, and the outer member 20B with the partition member can be provided to the main line of the vehicle body assembly. it can.

  This eliminates the need for welding and assembling work of the partition wall member 35 on the main line, and the installation of the partition wall member for preventing hot air intrusion can avoid deteriorating the workability of the main line for vehicle body assembly.

  This also allows the front windshield glass to move forward in the vehicle body, making it possible to cope with vehicle body designs that make it difficult to weld and assemble the bulkhead members in the main line, contributing to improved vehicle design freedom. To do.

  Further, since the wheel house upper member 20 is constituted by the inner member 20A and the outer member 20B and has a closed cross-sectional shape, the wheel house upper member 20 absorbs an impact load at the time of a frontal collision, and the front side pillar at the rear of the vehicle body. 22 is transmitted well, and the front collision resistance is improved.

1 is an overall perspective view showing an embodiment of an automobile to which a vehicle body front structure according to the present invention is applied. It is a perspective view of the principal part which shows one Embodiment of the vehicle body front part structure of the motor vehicle by this invention. It is a top view of the principal part which shows one Embodiment of the vehicle body front part structure of the motor vehicle by this invention. It is a side view of the outer member removal of the principal part of the vehicle body front part structure according to one embodiment. It is a side view (side view of an outer member) of the inner member removal of the principal part of the vehicle body front part structure according to one embodiment. FIG. 4 is a schematic sectional view taken along line XX in FIG. 3.

Explanation of symbols

11, 12 Front side member 13, 14 Extension member 15 Front bumper beam 16 Engine room 17, 18 Connection member 19, 20 Wheel house upper member 20A Inner member 20B Outer member 21, 22 Front side pillar 23, 24 Front wheel house 25, 26 Damper housing 27 Dashboard upper 28 Dashboard lower 29 Car compartment 30 Windshield support member 31, 32 Dashboard side member 33 Drainage groove part 34 Opening part 35 Bulkhead member 35A Upper piece part 35B Vertical piece part 35C Curl molding part 36, 37 Welding Generation 38 Drainage hole

Claims (2)

A wheel house upper member that extends in the longitudinal direction of the vehicle body, is joined to the front end of a front side pillar having a closed cross-sectional shape extending up and down at the rear end, and is inclined forward and downward from the joint, and extends in the vehicle width direction. And a dashboard upper
The wheel house upper member is configured by an inner member in the vehicle width direction and an outer member in the vehicle width direction outer side joined together, and has a closed cross-sectional shape,
An opening through which an end in the vehicle width direction of a drainage groove provided in the dashboard upper passes is formed in the inner member of the wheel house upper member,
A partition wall member having an upper piece covering an upper part of the vehicle width direction end of the drainage groove is attached to the outer member of the wheel house upper member, and a front end of the upper piece on the front side pillar side A front body structure of an automobile, wherein the front side pillar is pressed against the front side pillar so that there is no gap between the front side pillar end of the upper piece and the front side pillar. The cross-sectional shape of the end portion in the vehicle width direction of the drainage groove portion is U-shaped, the partition member has an L-shaped cross-sectional shape, and the partition wall member is added to the upper portion of the drainage groove portion. The vehicle body front structure according to claim 1, wherein the vehicle body front-rear direction front side is covered.

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