JP3997996B2 - Body front structure - Google Patents

Description

  The present invention relates to a vehicle body front part structure, and more particularly to a connection structure between a front side member and a hood ridge panel arranged in a vehicle front part.

Conventionally, as a front body structure of an automobile, a front side member is provided at the lower part of the vehicle body, a hood ridge panel is provided above the front side member, and these are bridged via a connecting member composed of a spring support and a spring support plate. Such a structure is known (see, for example, Patent Document 1). In this vehicle body structure, a spring support is disposed on the inner side in the vehicle width direction, and a spring support plate is disposed on the outer side in the vehicle width direction from the spring support at a predetermined interval.
No. 7-30462

  However, in the conventional example, the connecting member is composed of the spring support and the spring support plate arranged at a predetermined distance, so that the space in the engine room is narrowed and the vehicle weight increases due to the increase in the number of parts. There's a problem.

  Accordingly, an object of the present invention is to provide a vehicle body front structure having a small number of parts and a high connection strength between a front side member and a hood ridge panel.

  In order to achieve the above object, the present invention provides a hood ridge panel above a front side member, bridges the front side member and the hood ridge panel via a connecting member, and connects the connecting member, A vehicle body front structure composed of a strut housing portion disposed on the center side in the vehicle front-rear direction, and a reinforcing portion disposed on the vehicle front side and the rear side of the strut housing portion and integrally formed with the strut housing portion, The reinforcing part is arranged on the lower side and has a U-shaped lower side reinforcing part opened on the outer side in the vehicle width direction, and on the upper side of the lower side reinforcing part, the cross-sectional side opened on the inner side in the vehicle width direction. And a bent portion is formed by bending both ends in the vehicle front-rear direction at the upper portion of the strut housing portion and connected to the upper reinforcing portion. By connecting the upper part of the strut housing part and the upper side reinforcing part via a bent part, and connecting the corner part of the lower side reinforcing part on the strut housing part side to the bent part, The front side member is connected by a bent portion and a corner portion of the connecting member.

  According to the vehicle body front structure according to the present invention, since the connecting member that bridges the front side member and the hood ridge panel is integrally formed from the strut housing portion and the reinforcing portion, the connection strength is reduced by reducing the number of parts. Can be improved.

  Moreover, since the bending part formed in the upper part of the connection member and the corner | angular part of the lower side reinforcement part are connected, connection intensity | strength becomes large. That is, in general, the bent plate material can have higher rigidity than the flat plate material, so that the strength of the connecting member can be significantly improved as compared with the case where the connecting member is simply formed in the flat shape.

  Furthermore, since the hood ridge panel and the front side member are connected by the bent portion and the corner portion of the connecting member, the case where the hood ridge panel is connected only by the bent portion of the strut housing portion or the case where the hood ridge panel is connected only by the corner portion of the reinforcing portion However, the input load is dispersed and the connection strength can be increased.

  Furthermore, since the opening direction of the reinforcing portion is changed between the upper side and the lower side, the connection strength of the reinforcing member can be further improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing a vehicle body front structure according to an embodiment of the present invention.

  As shown in FIG. 1, a front side member 1 is disposed along the vehicle front-rear direction at the front of the vehicle body. The front side member 1 is disposed above the front side member 1 and outside in the vehicle width direction. A hood ridge panel 3 extending substantially in parallel is extended. The front side member 1 and the hood ridge panel 3 are bridged via a connecting member 5.

  Further, the connecting member 5 is disposed on both the strut housing portion 7 disposed on the center side in the vehicle front-rear direction and on the vehicle front side and the vehicle rear side of the strut housing portion 7, and is integrally formed with the strut housing portion 7. It is comprised from the reinforced part 9 made.

  The front side member 1 can be formed by, for example, extrusion molding of an aluminum alloy material, and is formed in a rectangular tube shape having a closed cross-sectional structure.

  Further, the hood ridge panel 3 is formed in a closed cross-sectional structure having a substantially rectangular cross section by butting two bent panel members together and joining them together. The upper surface 3a of the hood ridge panel 3 is provided with a flange portion 11 projecting inward in the vehicle width direction, and the upper end surface 13 of the strut housing portion 7 is in contact with and joined to the lower portion of the flange portion 11. Has been.

  Next, the connecting member 5 will be described. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB in FIG.

  The upper end surface 13 of the strut housing part 7 is disposed along the upper surface 3 a of the hood ridge panel 3. Specifically, a flange portion 11 is extended on the upper surface 3 a of the hood ridge panel 3, and the upper end surface 13 of the strut housing portion 7 is joined in contact with the lower portion of the flange portion 11. Are arranged along the upper surface 3a of the hood ridge panel 3.

  Further, the strut housing portion 7 is provided with an inclined surface 14 and an upper surface 15 that extend obliquely from the upper end surface 13 toward the inner side in the vehicle width direction, and a vertical surface 17 that is bent and extends from an end portion of the upper surface 15. The upper surface 15 and the vertical surface 17 are arranged orthogonal to each other. As shown in FIG. 2, the inclined surface 14 is formed at a bent portion 16 by bending both ends in the vehicle front-rear direction, and the bent portion 16 connects the strut housing portion 7 and the upper side reinforcing portion 33. Yes. Although not shown in cross-sectional shape, both end portions of the upper surface 15 are also bent and formed in the bent portion 16, and the bent portion 16 connects the strut housing portion 7 and the upper side reinforcing portion 33.

  A suspension strut 19 is disposed outside the upper surface 15 and the vertical surface 17 in the vehicle width direction. The suspension strut 19 includes a suspension support 21 fixed to the upper surface 15, a shock absorber 23 arranged in the axial direction along the vertical surface 17, and a coil spring 25 attached to the shock absorber 23. The suspension support 21 is fastened to the upper surface 15 via bolts 31 while the head 27 is fitted into the support hole 29 on the upper surface 15 of the strut housing portion 7.

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

  The reinforcing portion 9 includes reinforcing portions 9 arranged on the vehicle front side and the vehicle rear side of the strut housing portion 7, and the reinforcing portions 9 and 9 are arranged in a pair of front and rear. These reinforcing portions 9 are arranged on the upper side and are arranged on the lower side with the upper side reinforcing portion 33 formed in a substantially U-shaped cross section with the vehicle width direction inner side (upper side) opened. The lower side reinforcing portion 35 is formed in a substantially U-shaped cross section with an opening in the outer side in the direction, and the opening direction is reversed in the vicinity of the central portion in the height direction. That is, the lower side reinforcing portion 35 is integrally formed from a vertical wall surface 37 extending along the vertical direction and a side wall surface 39 extending from both ends of the vertical wall surface 37 in the vehicle front-rear direction toward the outside in the vehicle width direction. Further, the upper side reinforcing portion 33 extends from the upper end of the vertical wall surface 37 and bends and extends outward in the vehicle width direction, and the vehicle inner side in the vehicle width direction from both ends of the bottom wall surface 41 in the vehicle front-rear direction ( It is integrally formed from a side wall surface 43 extending upward. Further, an upper link mounting hole 45 is formed in the side wall surface 43 in the vicinity of the central portion in the height direction of the reinforcing portion 9, and the upper link mounting hole 45 has a two-dot chain line in FIGS. As shown, the end of the upper link 47 is pivotally supported. And the lower end surface 49 of the vertical wall surface 37 of the lower side reinforcement part 35 is arrange | positioned along the side surface 51 inside the vehicle width direction of the front side member 1. Further, as is apparent from FIG. 1, the upper end of the corner portion 18 on the strut housing portion 7 side of the lower side reinforcing portion 35 is connected to the bent portion 16, whereby the hood ridge panel 3 and the front side member 1. Are connected by the bent portion 16 and the corner portion 18 of the connecting member 5.

  FIG. 5 is an enlarged perspective view of the vicinity of the hood ridge panel in FIG.

  A mounting surface 53 is formed at the upper end of the upper-side reinforcing portion 33 so as to extend vertically and along the vehicle front-rear direction. The mounting surface 53 is disposed so as to block the upper end of the bottom wall surface 41 and the side wall surface 43 of the upper side reinforcing portion 33, contacts the side surface 55 of the hood ridge panel 3 in the vehicle width direction, and is joined in this state. Yes.

  FIG. 6 is an enlarged perspective view of the vicinity of the side member in FIG.

  A flange 57 extending in the vertical direction and the vehicle front-rear direction is formed at the lower end of the lower-side reinforcing portion 35, and the flange 57 contacts and is joined to the side surface 51 on the inner side in the vehicle width direction of the front side member 1. ing.

  Below, the effect by embodiment of this invention is demonstrated.

  As shown in FIGS. 1 and 7, a flange 57 extending downward is formed in the lower reinforcing portion 35 of the connecting member 5, and the flange 57 is joined to the side surface 51 of the front side member 1. The bending moment input to the front side member 1 through 5 can be reliably received by the surface of the flange 57.

  As shown in FIGS. 1 and 6, a mounting surface 53 is provided at the upper end of the upper reinforcing portion 33 of the connecting member, and the mounting surface 53 is joined to the side surface 55 on the inner side in the vehicle width direction of the hood ridge panel 3. Therefore, the bending moment input to the front side member 1 via the connecting member 5 can be reliably received by the mounting surface 53.

It is a perspective view which shows the vehicle body front part structure by embodiment of this invention. It is sectional drawing by the AA line of FIG. It is sectional drawing by the BB line of FIG. It is sectional drawing by CC line of FIG. It is sectional drawing by the DD line of FIG. It is the perspective view which expanded the food ridge panel vicinity in FIG. It is the perspective view which expanded the side member vicinity in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Front side member 3 ... Hood ridge panel 3a ... Upper surface 5 ... Connecting member 7 ... Strut housing part 9 ... Reinforcement part 13 ... Upper end surface 16 ... Bending part 18 ... Corner | angular part 33 ... Upper side reinforcement part 35 ... Lower side reinforcement part 49 ... Lower end surface 51 ... Side surface 53 ... Mounting surface 55 ... Side surface 57 ... Flange

Claims (3)

A strut housing portion in which a hood ridge panel is disposed above the front side member, and the front side member and the hood ridge panel are bridged through a connecting member, and the connecting member is disposed on the center side in the vehicle front-rear direction. And a vehicle body front portion structure that is arranged on the front side and the rear side of the strut housing portion and is formed integrally with the strut housing portion,
The reinforcing portion is disposed on the lower side and has a U-shaped lower side reinforcing portion opened on the outer side in the vehicle width direction, and on the upper side of the lower side reinforcing portion, the cross-sectional shape opened on the inner side in the vehicle width direction. Formed from a character-shaped upper side reinforcing part,
By bending both ends in the vehicle front-rear direction at the upper part of the strut housing part to form a bent part and connecting it to the upper side reinforcing part, the upper part of the strut housing part and the upper side reinforcing part are connected via the bent part. And by connecting the corners on the strut housing part side of the lower side reinforcing part to the bent part,
A vehicle body front structure characterized in that a hood ridge panel and a front side member are connected by a bent portion and a corner portion of a connecting member.   2. The vehicle body according to claim 1, wherein a flange extending downward is formed in a lower reinforcing portion of the connecting member, and the flange is brought into contact with and joined to a side surface of the front side member in the vehicle width direction. Front structure. The mounting surface is provided in the upper end part of the upper side reinforcement part of the said connection member, This mounting surface is contact | abutted and joined to the side surface inside the vehicle width direction of a hood ridge panel, The Claim 1 or 2 characterized by the above-mentioned. Vehicle body front structure as described.

Images