JP2006327449A - Vehicle body front part structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body front part structure suppressing the backward falling of a damper housing at the time of frontal collision, and protecting a pedestrian's head. <P>SOLUTION: In the vehicle body front part structure, a damper plate fixed to a damper base and a windshield lower panel are coupled in a fore-and-aft direction of a vehicle body by a support. The windshield lower panel and a front pillar are coupled by a gusset, and a front end of the front pillar and a rear end of a side member are coupled. The side member and the damper plate are coupled. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle body front structure.

  A pair of damper housings (strut towers) for connecting and supporting the dampers (struts) of the front suspension are disposed in the engine room, and a damper base is welded to the top of each damper housing.

  A pair of left and right damper bases are connected by a damper bar, and a load input to the damper housing is borne by the damper bar so as to prevent the so-called falling of the damper housing.

On the other hand, there is a demand for a vehicle body front structure that absorbs this impact force and protects the pedestrian when the pedestrian who has jumped up to the hood collides with the wiper rotating shaft during a frontal collision with the pedestrian.
JP-A-4-254264 Japanese Patent No. 3179553

  The conventional vehicle body front part structure disclosed in the above-mentioned patent document discloses a structure for preventing the internal falling of the damper housing, but does not disclose any structure for preventing the backward falling of the damper housing during a frontal collision.

  Furthermore, when the head of a pedestrian that is bounced up to the bonnet collides with the wiper rotation shaft part at the time of a frontal collision with a pedestrian, the disclosure of technology for protecting the pedestrian's head by absorbing impact force Absent.

  The present invention has been made in view of the above points, and an object of the present invention is to make it possible to effectively prevent the damper housing from falling backward in frontal collision and to protect the pedestrian's head. Is to provide a front structure.

  According to the first aspect of the present invention, there is a vehicle body front structure, wherein a damper plate fixed to a damper base and a windshield lower panel are connected by a support in the front-rear direction of the vehicle body, and the windshield lower panel and the front pillar are gusseted And a front end of the front pillar and the rear end of the side member, and the side member and the damper plate are connected to each other.

  According to the second aspect of the present invention, in the first aspect of the present invention, the support is disposed below the wiper operating link, and the support has a horizontal bottom surface and a vertical wall that expands inward in the vehicle width direction. A front structure is provided.

  According to the invention described in claim 1, since the box shape is formed by the damper housing, the support, the gusset, the front pillar, and the side member, the rigidity is improved, and the damper housing is effectively tilted backward during a frontal collision. Can be prevented. Furthermore, the amount of retreat of the front pillar at the time of a frontal collision can also be suppressed.

  According to the second aspect of the present invention, since the support disposed below the wiper operation link has the vertical wall that expands inward in the vehicle body width direction, the support has rigidity in the front-rear direction and the wiper arm is detached. When the pedestrian who collides head-on is bounced up to the bonnet and the head collides with the wiper rotating shaft, the wiper arm easily falls off and the pedestrian falls. The head can be protected.

  FIG. 1 shows a plan view of a dashboard upper assembly 2 attached to a damper base. The dashboard upper assembly 2 separates the vehicle compartment and the engine compartment of the automobile. In FIG. 1, the lower side of the dashboard upper assembly 2 is the engine compartment side, and the upper side is the compartment side.

  The dashboard upper assembly 2 is spot welded to the dashboard upper 4 extending in the vehicle body width direction so that the left and right ends extend to the upper surfaces of the left and right damper bases. A cross member 6 that forms a closed cross section in the width direction, and a pair of damper plates 10 that are spot-welded to the dashboard upper 4 so as to overlap the upper surface of the damper base on the extension lines of the left and right ends of the cross member 6. .

  The cross member 6 has a plurality of holes 8 for weight reduction. Reference numeral 22 denotes a tire house, and a damper housing (strut tower) 14 is welded to the tire house 22. Reference numeral 24 denotes a bonnet hinge side member which is welded to the damper plate 10.

  As shown in FIG. 3, which is a sectional view taken along line 3-3 in FIG. 2, a damper base 16 is welded to the upper end portion of the damper housing 14, and the damper base 16 is connected to the damper mounting hole 12 of the damper plate 10. Three holes 18 are formed at corresponding positions.

  The damper mounting hole 12 formed in the damper plate 10 serves as a reference hole for mounting the upper end of the damper, and its accuracy is sufficiently controlled, but the hole 18 can be inserted with a bolt fixed to the upper end of the damper. If it is sufficient, it has a larger diameter than the damper mounting hole 12.

  A connecting member 20 is welded over the dashboard upper 4 and the damper housing 14. After the damper mounting hole 12 formed in the damper plate 10 and the hole 18 formed in the damper base 16 are aligned, the damper plate 10 is spot welded to the damper base 16.

  The dashboard upper assembly 2 of this embodiment has a damper mounting hole 12 in which the forming position accuracy is managed. Therefore, by inserting the bolt fixed to the upper end of the damper into the damper mounting hole 12 of the damper plate 10 and tightening the nut to the bolt, the upper end of the damper can be fixed to the damper base 16, and the left and right sides of the front suspension can be fixed. Mounting accuracy can be improved.

  Referring to FIG. 4, there is shown a schematic plan view of a vehicle body front structure according to an embodiment of the present invention. Reference numeral 28 denotes a stay for holding the wiper operation link 36, which is attached to the dashboard upper assembly 2.

  A motor assembly 30 having a motor 32 for driving a wiper arm is held by a stay 28 and fixed to the dashboard upper assembly 2 by bolts 34.

  A wiper operating link 36 is attached to the dashboard upper assembly 2 at both ends, and an intermediate portion thereof is operatively connected to the motor assembly 30. When the motor 32 rotates, the wiper operation link 36 swings left and right.

  Referring also to FIG. 6, the support 40 is spot welded to the damper plate 10. As shown in FIG. 8, the support 40 is reinforced by a spot-welded reinforcing member 50, and has a horizontal bottom surface 40a and a vertical wall 40b that expands inward in the vehicle body width direction.

  The support 40 is bolted to the windshield lower panel 42, and the windshield lower panel 42 and the front pillar 44 are connected by a gusset 46, as best shown in FIG. .

  That is, both ends of the gusset 46 are fixed to the windshield lower panel 42 and the front pillar 44 by bolts, respectively. In FIG. 5, reference numeral 50 denotes a door attachment opening.

  Although not particularly illustrated, the front end of the front pillar 44 and the rear end of the side member (front side frame) 48 are connected. The side member 48 is fixed to the damper plate 10 by spot welding.

  As best shown in the enlarged view of the main part in FIG. 6, the support 40 is disposed below the wiper operation link 36 and has a vertical wall 40 b that expands inward in the vehicle body width direction. As described above, since the vertical wall 40b of the support 40 expands inward in the vehicle body width direction, an escape space that does not hinder the wiper arm from falling off can be obtained. Although not particularly illustrated, wiper arms are attached to the left and right wiper arm rotation shafts 38.

  According to the vehicle body front structure of the present embodiment described above, the damper base 16, the support 40 fixed to the damper base 16 via the damper plate 10, the gusset 46, the front pillar 44, and the damper plate 10 are used. Thus, a closed box shape can be formed with the side member 48 fixed to the damper base 16 to increase the rigidity.

  Therefore, this box-shaped structure can suppress the backward collapse of the damper housing 14 at the time of a frontal collision. Furthermore, the retreat amount of the front pillar 44 at the time of a frontal collision can also be suppressed.

  Further, since the vertical wall 40b of the support 40 arranged below the wiper operation link 36 is expanded inward in the vehicle body width direction so as to form an escape space that does not prevent the wiper arm from falling off, a pedestrian who collides head-on jumps up to the bonnet. When the head collides with the wiper rotation shaft 38, the wiper arm together with the wiper rotation shaft 38 is allowed to fall down. Therefore, the impact at the time of collision is reduced, and the head of the pedestrian is protected. Can be planned.

It is a top view of the dashboard upper assembly attached to the damper base. It is a partially expanded plan view of the dashboard upper assembly. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. 1 is a schematic plan view of a vehicle body front structure according to an embodiment of the present invention. FIG. 5 is a view as viewed in the X direction of FIG. 4. It is a principal part enlarged view of FIG. It is a Y direction arrow line view of FIG. It is a perspective view of a support.

Explanation of symbols

2 Dashboard upper assembly 4 Dashboard upper 6 Cross member 10 Damper plate 14 Damper housing 16 Damper base 30 Motor assembly 32 Motor 36 Wiper operation link 38 Wiper rotation shaft 40 Support 42 Windshield lower panel 44 Front pillar 46 Gusset 48 Side member

Claims (2)

A vehicle body front structure,
Connect the damper plate fixed to the damper base and the windshield lower panel with the support in the longitudinal direction of the car body,
Connect the windshield lower panel and the front pillar with gussets,
Connecting the front end of the front pillar and the rear end of the side member;
A vehicle body front structure comprising the side member and the damper plate connected to each other.   The vehicle body front structure according to claim 1, wherein the support is disposed below the wiper operation link and has a front and rear horizontal bottom surface and a vertical wall that expands inward in the vehicle body width direction.

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