JP3506363B2 - Front side member extension - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front side member extension for connecting a body sill to a front side member. 2. Description of the Related Art Conventionally, as shown in FIGS. 9A and 9B, a body sill 202 is attached to a front side member 201.
When connecting a plurality of sills, a structure using an outrigger 203 disposed between the front side member 201 and the body sill 202 has been known. In this structure, the front side member 201 and the outrigger 203 are separate bodies, and the outrigger 20
3 has a problem that it is difficult to obtain the vehicle body accuracy in the mounting portion because of the structure in which the end of the third member is welded to the lower surface of the front side member 201. In order to solve this, as shown in FIGS. 10A and 10B, an extension 212 extending along the front side member 211 and an extension extending toward the body sill 213 are provided. A structure using a front side member extension 215 integrally formed with the front side member 214 is known. In this structure, a mounting portion 216 for a suspension member is provided at the intersection of the extending portion 212 and the extending portion 214 in the front side member extension 215, as shown in FIG. As described above, the support plate 218 that supports the upper end of the mounting bolt 217 of the suspension member is provided on the front side member extension 215. [0004] However, in the structure using the front side member extension 215, the extending portion 212 and the extending portion 214 are integrally formed. As shown in FIG. 10, the wall surfaces 221 and 222 extending in the vehicle front-rear direction along the front side member 211 are the wall surfaces 221 on the vehicle body side.
Are cut off at the extension 214. As a result, the strength in this portion is reduced, which may cause a reduction in the rigidity of the vehicle body. [0005] The present invention has been made in view of such a conventional problem, and has as its object to provide a front side member extension that can easily achieve vehicle body accuracy without reducing strength. . According to a first aspect of the present invention, there is provided a front side member extension for connecting a body sill to a front side member. In a front side member extension for connecting a body sill to a front side member, an extending portion extending in the vehicle front-rear direction along the front side member, and extending to the vehicle body side from the extending portion to be connected to the body sill. A flat surface for supporting a suspension member is formed at an intersection of the extending portion and the extending portion, and a bolt hole for mounting a suspension is provided on the flat surface. An inner side extending in the front-rear direction of the vehicle body with a flange formed on an upper edge at an inner edge of the vehicle body of the extending portion. A wall is erected, an outer wall extending in the vehicle front-rear direction is erected on the outer edge of the vehicle body of the extending portion, and the outer wall is an outer front wall portion on the vehicle front side from the extending portion, and An extension body formed of an outer rear wall portion having a flange formed on an upper edge forming a vehicle rear side from the extension portion, wherein a gap is formed between the outer front wall portion and the outer rear wall portion; Is in contact with the flat surface of the extension body,
It is provided with a contact surface provided with a through hole that matches the bolt hole provided on the flat surface, and on the outer edge of the vehicle body of the contact surface,
A continuous wall extending in the vehicle front-rear direction and connecting the outer front wall portion and the outer rear wall portion of the extension main body is erected, and a flange provided on an upper edge of the continuous wall is provided with the extension. A first reinforce, which is fixed to a flange of the outer rear wall portion of the main body, and has an inner standing wall fixed to the inner side wall of the extension main body at an inner edge of the face contacting surface with the vehicle body; An opposing surface which is spaced apart above the interfacing surface of the first reinforce and has an insertion hole that matches the through hole of the interfacing surface, and an outer edge of the opposing surface of the vehicle body. An outer fixed wall having a flange that is raised up along the connecting wall of the first reinforce and has a flange fixed to the flange of the connecting wall. At the edge, the inside of the extension body Erected upward along the wall comprises a second reinforcement fixed wall inner having a flange which is fixed to the flange of the inner side wall is provided, the. That is, the front side member and the body sill extend along the front side member in the vehicle front-rear direction, and extend from the extension to the vehicle body side to be connected to the body sill. Since the connection is made by the extension body composed of the extending portion, the vehicle body accuracy of the mounting portion is enhanced, and the input from the front portion of the vehicle body is efficiently transmitted to the body sill. The extension body has a flat surface for supporting a suspension member at an intersection of the extending portion and the extending portion, and the flat surface has a first reinforcement member. Since the contact surfaces are contacted, the flat surface is reinforced by this contact surface. Further, at the extending portion of the extension body, an outer wall of the extension body divided into an outer front wall portion and an outer rear wall portion is continuously provided by a first reinforcement wall. Therefore, the rigidity against the input from the front of the vehicle body is increased. The connecting wall of the first reinforcement and the inner wall of the extension body facing the connecting wall are opposed to the second reinforcement arranged on the surface contact surface. , A closed cross-sectional shape is formed by the extension body and the first and second reinforcements. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a vehicle 2 using a front side member extension 1 of the present invention, and only the left side of the vehicle 2 is shown. The front side member 11 of the vehicle 2 is provided with the front side member extension 1 below the cabin, and the front side member 11 is connected to the vehicle body side portion via the front side member extension 1. Is connected to the body sill 12 disposed at the center. As shown in FIG. 2, the front side member extension 1 includes an extension body 21 for connecting the front side member 11 to the body sill 12, and a first reinforcement 22 provided on the extension body 21. And a second reinforcement 23 provided so as to cover the first reinforcement 22.
It consists of: As shown in FIG. 3, the extension body 21 extends along the front side member 11 in the longitudinal direction of the vehicle body, and extends from the extending portion 31 to the side O of the vehicle body. And an extension portion 32 connected to the body sill 12. A flat surface 34 for supporting a suspension member mounting bolt 33 (see FIG. 6) is provided at an intersection of the extension portion 31 and the extension portion 32.
The flat surface 34 is provided with a bolt hole 35 for mounting a suspension. Further, a front inclined surface 36 is formed on the vehicle front F side from the flat surface 34, and on the vehicle rear R side from the flat surface 34,
A horizontal surface 38 is formed via the rear inclined surface 37. An inner wall 41 extending in the front-rear direction of the vehicle body is erected on the inner edge of the vehicle body I of the extending portion 31. The upper edge of the inner wall 41 is provided on the inner edge of the vehicle body. An inner flange 42 bent toward the direction I is formed.
Further, an outer wall 43 extending in the vehicle body front-rear direction is erected at an outer edge O of the vehicle body of the extending portion 31, and the outer wall 43 is divided by the extending portion 31. An outer front wall portion 44 that forms the front side of the vehicle body from the extension portion 31;
And an outer rear wall portion 45 forming a side. Thus, a gap is formed between the outer front wall portion 44 and the outer rear wall portion 45. Further, the outer front wall portion 44
Is connected to a front edge upright wall 46 which is bent to the outside O side of the vehicle body at the front edge of the extension portion 32 and is upright. The front edge upright wall 46 is joined to the body sill 12. On the upper edge of the outer rear wall portion 45, an outer rear flange 47 bent toward the vehicle body side O is formed. As shown in FIGS. 2 and 4, the first reinforcement 22 has a surface 51 which is in contact with the flat surface 34 of the extension body 21 (see FIG. 6). The contact surface 51 has a through hole 52 that matches the bolt hole 35 provided in the flat surface 34. The front contact surface 51 is formed with a front inclined surface contact surface 53 that is welded in a state of being in contact with the front inclined surface 36 of the extension body 21 on the front side F of the vehicle body. The rear inclined surface 37 of the extension body 21 and the horizontal surface 3
8, a rear inclined surface contact surface 54 and a horizontal surface contact surface 55 which are in contact with each other are formed, and the horizontal surface contact surface 55 is welded to the horizontal surface 38. The contact surface 51, the rear inclined surface 5
4, the outer front wall portion 44 and the outer rear wall portion 45 of the extension main body 21 are connected to the edge of the horizontal plane contact surface 55 on the outer side of the vehicle body O side in the front-rear direction of the vehicle body. A continuous wall 61 is erected, and the outer rear wall portion 4 of the extension body 21 is provided on an upper edge of the continuous wall 61.
5, a continuous flange 62 welded to the outer rear flange 47 is formed. At the front end of the continuous wall 61, a front edge upright welding wall 63 welded to the front edge upright wall 46 of the extension body 21 is formed, and the front edge upright welding wall 63 is attached to the extension body 21. An outer front welding wall 64 to be welded to the outer front wall portion 44 is formed. The surface contact surface 51, the front inclined surface contact surface 53, the rear inclined surface contact surface 54, and the horizontal surface contact surface 5
5, an inner standing wall 6 welded to the inner side wall 41 of the extension body 21
5 are standing. The second reinforcement 23 is shown in FIG.
As shown in FIGS. 5 and 6, an opposing surface 71 is formed on the upper surface of the surface contact surface 51 of the first reinforce 22 so as to be spaced and opposed to the upper surface.
1 is provided with an insertion hole 72 that matches the through hole 52 of the surface contact surface 51. As shown in FIG.
As shown in the figure, a front inclined welding surface 73 welded to the front inclined surface 36 of the extension body 21 is formed on the front side F of the vehicle body, and the opposite surface 71 is provided on the rear side of the extension body 21. A separation extension surface 74 extending apart from the inclined surface 37 and a bent surface 75 bent from the separation extension surface 74 are formed. As shown in FIGS. 5 and 6, the outer surface of the opposing surface 71, which extends upward along the connecting wall 61 of the first reinforcement 22, as shown in FIGS. A fixed wall 81 is provided, and an upper edge of the outer fixed wall 81 and
The spaced-apart extending surface 74 and the bent surface 7 continuing to the upper edge
5 and the continuous flange 6 of the continuous wall 61
2 is formed with an outer fixing flange 82 to be welded.
An inner fixed wall 83 is formed on the inner surface I of the facing surface 71 along the inner wall 41 of the extension body 21.
An inner fixing flange 84 that is welded to the inner flange 42 of the inner wall 41 of the extension body 21 is provided between the upper edge of the extension 3 and the edges of the separated extending surface 74 and the bent surface 75 that are continuous with the upper edge. Is formed. A dash floor 91 is provided on the outer fixing flange 82 and the inner fixing flange 84 of the second reinforcement 23 as shown in FIG. , A patch dash lower 92 welded to the upper surface of the body sill 12 is laid. In this embodiment having the above configuration,
The front side member 11 and the body sill 12 are connected to the body sill 12 by extending an extending portion 31 extending in the vehicle longitudinal direction along the front side member 11 and extending to the vehicle body side O from the extending portion 31. Since the connection can be made by the extension main body 21 composed of the extending portion 32 provided, the vehicle body accuracy of the mounting portion can be improved, and as shown in FIG.
It can be transmitted to the body sill 12 efficiently.
Also, the outer front wall portion 44 and the outer rear wall portion 4
The outer wall 43 of the extension body 31 divided into the first and second portions 5 is continuously provided by the continuous wall 61 of the first reinforcement 22, so that the rigidity against the input N from the front F of the vehicle body can be increased. Further, a flat surface 34 for supporting a suspension member is formed in the extension body 21 at the intersection of the extending portion 31 and the extending portion 32. As shown in FIG. 6, since the contact surface 51 of the first reinforcement 22 is in contact with the surface, the flat surface 34 can be reinforced by a double structure with the contact surface 51. In the intersection, the connecting wall 61 of the first reinforcement 22 and the inner wall 41 of the extension body 21 facing the connecting wall 61 are separated from each other on the surface contact surface 51. Since the outer and inner fixing flanges 82 and 84 at both ends of the opposed surface 71 of the arranged second reinforcement 23 are connected to each other, the extension body 21 and the first and second
A closed cross-sectional shape can be formed by the reinforcements 22 and 23, and thereby the rigidity can be increased. The first contact surface 51 of the first reinforcement 22 that is in contact with the flat surface 34 of the extension body 21 has a bolt hole 3 formed in the flat surface 34.
5 is provided, and an opposed surface 71 of the second reinforce 23 which is spaced apart above the contact surface 51 is provided with an insertion hole 72 which matches the through hole 52. Have been. Thereby, as shown in FIG. 6, the mounting bolt 33 of the suspension member is inserted into the bolt hole 35 and the through hole 52 provided in the flat surface 34 and the surface contact surface 51, and the insertion bolt provided in the facing surface 71. Since the suspension can be supported at two positions above and below the hole 52, the rigidity of the attached suspension in the torsion direction can be increased. As described above, in the front side member extension according to the present invention, the front side member and the body sill are extended along the front side member in the longitudinal direction of the vehicle body. And an extension body extending from the extending portion to the side of the vehicle body and having an extending portion connected to the body sill, the vehicle body accuracy of the mounting portion can be improved, and the front of the vehicle body can be improved. Can be efficiently transmitted to the body sill. Further, in the extension portion of the extension body, the outer wall of the extension body divided into an outer front wall portion and an outer rear wall portion is continuously provided by a continuous wall of the first reinforcement. Thus, the rigidity against input from the front of the vehicle body can be increased. Further, in the extension body,
A flat surface for supporting a suspension member is formed at the intersection of the extending portion and the extending portion, and the flat surface is in contact with the surface contact surface of the first reinforce. Can be reinforced by the double structure with this contact surface. Further, at the intersection, the second connecting wall of the first reinforcement and the inner wall of the extension body facing the connecting wall are separated from each other on the surface contact surface by a second wall. Since the reinforcements are connected by the opposing surfaces, the extension main body and the first and second reinforcements can form a closed cross-sectional shape, thereby increasing rigidity. [0025] In the first reinforce that is in contact with the flat surface of the extension body, a through hole that matches a bolt hole in the flat surface is provided in the first contact surface. An insertion hole matching the through hole is provided in the facing surface of the second reinforcement that is arranged as a hole, and the mounting bolt of the suspension member is connected to the bolt hole provided in the flat surface and the surface contact surface. And a through hole and an insertion hole provided in the facing surface. This makes it possible to increase the rigidity of the attached suspension in the torsion direction. [0026]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a main part showing one embodiment of the present invention. FIG. 2 is a perspective view showing a front side member extension according to the embodiment. FIG. 3 is a perspective view showing an extension body according to the embodiment. FIG. 4 is a perspective view showing a first reinforcement in the embodiment. FIG. 5 is a perspective view showing a second reinforcement in the embodiment. FIG. 6 is a sectional view taken along line SA-SA of FIG. 2; FIG. 7 is a sectional view taken along line SB-SB in FIG. 6; FIG. 8 is an explanatory diagram showing a state where an external force is input from the front to the front side member of the present invention. FIG. 9A is a plan view showing a portion where a conventional front side member and a body sill are continuously provided, and FIG.
FIG. 3A is a cross-sectional view along the line SC-SC in FIG. FIG. 10A is a plan view showing another conventional example,
(B) is a sectional view taken along the line SD-SD in (a). [Description of Signs] 1 Front side member extension 11 Front side member 12 Body sill 21 Extension body 22 First reinforcement 23 Second reinforcement 31 Extension part 32 Extension part 33 Mounting bolt 34 Flat surface 35 Bolt hole 41 Inside Wall 42 Inner flange 43 Outer side wall 44 Outer front wall portion 45 Outer rear wall portion 47 Outer rear flange 51 Surface contact surface 52 Through hole 61 Continuous wall 62 Continuous flange 71 Opposite surface 72 Insertion hole 81 External fixed wall 82 External fixed flange N input

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B62D 25/20

Claims (1)

(1) In a front side member extension in which a body sill is connected to a front side member, an extending portion extending in a vehicle front-rear direction along the front side member; A flat surface for supporting a suspension member is formed at an intersecting portion between the extending portion and the extending portion, the flat surface being formed at the intersection of the extending portion and the extending portion. A bolt hole for mounting a suspension is provided on the surface, and an inner wall extending in the front-rear direction of the vehicle body having a flange formed on an upper edge is erected at an inner edge of the vehicle body of the extending portion; An outer wall extending in the vehicle front-rear direction is erected at an outer edge of the vehicle body, and the outer wall is located on an outer front wall portion on the vehicle front side with respect to the extension portion, and on a vehicle rear side with respect to the extension portion. Flange on top edge to form An extension body having a gap formed between the outer front wall and the outer rear wall, and an extension body that is in surface contact with the flat surface of the extension body, A surface contact surface provided with a through hole that matches the bolt hole provided on the outer front wall portion of the extension body, extending in the vehicle front-rear direction on an outer edge of the vehicle body of the surface contact surface. A continuous wall connecting the outer rear wall portion is erected,
A flange provided on an upper edge of the continuous wall is fixed to a flange of the outer rear wall portion of the extension main body, and is fixed to an inner edge of the face contact surface on the inner side of the vehicle body and to the inner wall of the extension main body. A first reinforce on which an inner upright wall to be formed is erected, and an insertion hole which is arranged at a distance above the face contact surface of the first reinforce and matches the through hole of the face contact face. And a flange fixed to a flange of the first reinforcement on an outer edge of the opposite surface of the vehicle body along the connecting wall of the first reinforcement. An outer fixed wall is provided, and an inner fixed wall having a flange that is raised up along the inner wall of the extension body and fixed to a flange of the inner wall is provided on an inner edge of the vehicle body on the facing surface. The second ray provided The front side member extension, comprising: