JP3111756B2 - Suspension mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension mounting structure in which a mounting pin for mounting an upper end of a suspension is fixed to a side member of a vehicle body.

[0002]

2. Description of the Related Art As shown in FIGS. 4 (a) and 4 (b), for example, as shown in FIGS. 4 (a) and 4 (b), a plate-like side wall 1a of a side member 1 of a vehicle body frame (not shown in its entirety) is used. The side portion 2a of the bracket 2 is welded and fixed at the welded portion 2b, and the projection 2c of the bracket 2 projects upward.
There is a structure in which a base end portion and an intermediate portion of a mounting pin 3 penetrating through are welded to the upper surface 1b of the side member 1 and the bracket 2 at welding portions 4 and 5, respectively.

In this structure, a mounting hole at an upper end of a shock absorber (suspension) (not shown) whose lower end is supported by an axle support member is fitted to a shaft portion 3a of the mounting pin 3 protruding from the bracket 2 and mounted. By screwing a fixing nut (not shown) to the tip screw portion 3b of the pin 3,
The upper end of the shock absorber is supported on the vehicle body side (see, for example, JP-A-63-34212).

[0004]

In such a suspension mounting portion structure, only the side portion of the bracket 2 is fixed to the side wall 1a of the side member 1 by welding, and the projecting portion 2c of the bracket 2 is attached to the side member 1. Since the protrusion 2c is not fixed by welding, when an excessive external force acts on the protrusion 2c, the protrusion 2c is easily bent and deformed. In addition, the intermediate portion of the mounting pin 3 is welded and fixed to the projecting portion 2c which is easily bent and deformed, and the base of the mounting pin 3 is only welded and fixed to the upper surface 1a of the side member 1. When an excessive external force is applied to the mounting pin 3 from the shock absorber, the upper end 2 of the bracket 2
c may be bent and deformed, which is not preferable.

Therefore, the present invention provides a suspension mounting portion structure in which, even if an excessive external force is applied to a mounting pin from a suspension, the external force is dispersed and absorbed by various parts of the vehicle body so that the pin mounting portion is not deformed. It is intended to do so.

[0006]

SUMMARY OF THE INVENTION To achieve this object, the present invention is directed to a vehicle, comprising a side member extending forward and backward of a vehicle body, a portion near a side portion of a floor panel being fixed, and a side edge of the floor panel being attached to a side edge of the floor panel. A panel is fixed, an inner wheel house is fixed to a side portion and a side panel of the floor panel, and a mounting pin for suspension support is fixed to the side member corresponding to the inner wheel house. In a suspension mounting portion structure in which an upper end portion is mounted, an outrigger is fixed to the side member and the side panel in the vicinity of the inner wheel house, and a pin mounting wall parallel to a side wall of the side member is provided. The outlet close to the side wall and corresponding to the inner wheel house. A vertical reinforcing wall formed integrally with the side member and bent from the pin mounting wall toward the side member is fixed to the side member side wall and the floor panel, and the mounting pin is connected to the side member side wall and the pin. The suspension mounting portion structure is fixed to the side member and the pin mounting wall while penetrating the mounting wall.

[0007]

According to such a structure, a part of the external force input from the suspension to the mounting pin is dispersed and input to each part of the vehicle body such as the floor panel and the side panel via the outrigger, and the rest is connected to the mounting pin and the outrigger. Will be input to the side member via

[0008]

An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1A and 2 schematically show a suspension mounting portion structure according to the present invention for convenience of explanation. The structure of the suspension mounting portion is actually as shown in FIG. 3, but since the constituent members are the same, the description will be given with the same reference numerals.

In FIGS. 1 (a) and 1 (b), 10 is a side member extending in the front-rear direction of the vehicle body, and in FIG. 1 (b), 11 is a floor panel whose side is disposed above the side member 10.
In FIG. 1A, reference numeral 12 denotes a side panel in which an upper flange 12a is fixed by welding to a side edge of the floor panel 11,
Is a rear inner wheel house welded and fixed to a side portion of the floor panel 11 and a bent plate portion 12b at a front edge of the side panel 12.

The side member 10 has a bottom wall 10a and side walls 1 connected to both sides of the bottom wall 10a.
0b, 10b and flanges 10c, 10c, which are connected to the upper edges of the side walls 10b, 10b in opposite directions to each other and are fixed to the lower surface of the floor panel 11 by welding.

Between the side wall 10b of the side member 10 and the side panel 12, a rear inner wheel house 13 is provided.
An outrigger 14 is provided near the rear of the vehicle.
The outrigger 14 includes a bottom plate 15, a rear wall 16 integrally provided on the rear edge of the bottom plate 15 upward, and a bottom plate 15.
(See FIG. 2 and FIG. 2).
(See FIG. 3). In FIG. 2, reference numeral 10d denotes a pin insertion hole provided in the side wall 10b.

The bottom plate 15 is provided on one side edge and welded and fixed to the bottom surface of the bottom wall 10a of the side member 10, and is provided on the other side edge and fixed to the side panel 12 by welding. A bent plate portion 15b, and a bent plate portion 15c provided at the front edge and fixed to the rear surface of the rear inner wheel house 13 by welding.

The rear wall 16 is provided at one side edge and fixed to the side wall 10b of the side member 10 by welding.
6a, a bent pair 16b provided on the upper edge and welded and fixed to the upper flange 12a of the flange 10c, the floor panel 11, and the side panel 12, and provided on the other side edge and fixed to the side panel 12 by welding. It has a bent plate portion 16c.

The pin mounting portion 17 has a pin mounting wall 17a parallel to the side wall 10b of the side member 10. The pin mounting wall 17a is formed integrally with the bottom plate 15 of the outrigger 14 near the side wall 10b and at a position corresponding to substantially the center of the rear inner wheel house 13.

The pin mounting portion 17 is provided with a pin mounting wall 17.
a front vertical reinforcing wall 17b which is bent from the front edge to the side member 10 side and whose lower edge is provided integrally with the front edge of the bottom plate 15
And a rear vertical reinforcing wall 17c provided integrally with the rear edge of the pin mounting wall 17a and extending in a direction away from the side member 10. A bent plate portion 17d welded and fixed to the side wall 10b of the side member 10 is provided at a side edge of the front vertical reinforcing wall 17b, and a flange 10c of the side member 10 and a floor panel are provided at an upper edge of the front vertical reinforcing wall 17b. 11
Is provided with a bent plate portion 17e which is welded and fixed. A bent plate portion 17 welded and fixed to the floor panel 11 is provided on the upper edge of the pin mounting wall 17a and the upper edge of the rear vertical reinforcing wall 17c.
f and 17g are integrally provided, and a bent plate portion 17h welded and fixed to a side portion of the rear inner wheel house 12 is integrally provided on a side edge of the rear vertical reinforcing wall 17c. FIG.
Reference numeral 17k denotes a pin insertion hole provided in the pin mounting wall 14a.

The outrigger 14 is fixed by such welding and fixing.
Are the side wall 10b of the side member 10 and the side panel 1
2 and the floor panel 11,
The rear inner wheel house 13 is welded and fixed to the rear portion and the side of the passenger compartment to form a substantially closed space between the side member 10, the floor panel 11, the side panel 12, and the rear inner wheel house 13. Has formed.

In FIG. 1B, reference numeral 18 denotes a rear shock absorber (rear suspension), 19 denotes a bearing at the upper end of the rear shock absorber 18, and in FIGS. The mounting pin 20 has a large-diameter fixed shaft portion 20a, a medium-diameter support shaft portion 20b, and a small-diameter screw portion 20c.

The fixed shaft portion 20a passes through the pin insertion holes 10d of the side walls 10b, 10b of the side member 10 and the pin insertion holes 17k of the pin mounting wall 17a.
At the penetrating portion, the fixing member is welded and fixed to the side walls 10b, 10b and the mounting wall 17a. The bearing 19 of the rear shock absorber 18 is fitted into the support shaft portion 20b, and the screw portion 20
A nut 21 is screwed to c to prevent the bearing 19 from coming off. The lower end of the rear shock absorber 18 is attached to a support member (not shown) for the rear axle.

Next, the operation of the suspension mounting structure having such a structure will be described.

According to such a configuration, a part of the external force inputted from the rear shock absorber 18 as a suspension to the mounting pin 20 is partially transmitted through the outrigger 14 to the floor panel 11, the side panel 12, and the rear inner wheel house 13. And the like, and the rest is input to the side members via the mounting pins 20 and the outriggers 14.

The outrigger 14 is provided with the pin mounting portion 1.
7, the span in the front-rear direction fixed by welding to the side wall 10b of the side member 10 becomes longer. That is, the span can be lengthened by extending the pin mounting portion 17 to the curved portion of the rear inner wheel house 13. As a result,
The closed cross section of the outrigger 14 formed by the floor panel 11, the side members 10, and the side panels 12 can be enlarged, and the overall rigidity of the vehicle body can be improved.

[0023]

As described above, according to the present invention, the outrigger is fixedly connected to the side member and the side panel in the vicinity of the inner wheel house, and the pin mounting wall parallel to the side wall of the side member is close to the side wall. And a vertical reinforcing wall formed integrally with the outrigger corresponding to the inner wheel house and bent from the pin mounting wall toward the side member is fixed to a side wall of the side member and the floor panel, Since the mounting pin is fixed to the side member and the pin mounting wall while penetrating the side member and the pin mounting wall, even if an excessive external force is input to the mounting pin from the suspension, The external force is dispersed and absorbed by various parts of the vehicle body, so that the mounting pin support can be reliably prevented from being deformed.

[Brief description of the drawings]

FIG. 1A is a schematic perspective view of a suspension mounting portion structure according to the present invention, and FIG. 1B is a longitudinal sectional view taken along a mounting pin of FIG.

FIG. 2 is an exploded perspective view of FIG.

FIG. 3 is a more detailed explanatory view of the suspension mounting structure of FIG. 1;

FIG. 4A is a perspective view of a main part of a conventional suspension mounting structure, and FIG. 4B is a longitudinal sectional view taken along a mounting pin of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Side member 10b ... Side wall 11 ... Floor panel 12 ... Side panel 14 ... Outrigger 13 ... Inner wheel house 17 ... Pin mounting part 18 ... Rear shock absorber (rear suspension) 19 ... Bearing (upper end) 20 ... Mounting pin

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60G 7/00 B62D 21/11

Claims (1)

(57) [Claims] 1. A portion near a side portion of a floor panel is fixed on a side member extending in the front-rear direction of a vehicle body, and a side panel is fixed to a side edge portion of the floor panel. A suspension mounting part structure in which an inner wheel house is fixed, a suspension supporting mounting pin is fixed to the side member corresponding to the inner wheel house, and an upper end of the suspension is mounted on the mounting pin. An outrigger is fixed to the side member and the side panel in close proximity to the inner wheel house, and a pin mounting wall parallel to a side wall of the side member is close to the side wall and corresponds to the inner wheel house. The pin is formed integrally with the outrigger and the pin A vertical reinforcing wall bent to the bar side is fixed to the side wall of the side member and the floor panel, and the side member and the pin mounting wall with the mounting pin penetrating the side member and the pin mounting wall. A suspension mounting structure fixed to the suspension.