JPH08301139A - Arrangement structure for axle beam type suspension for vehicle - Google Patents

Abstract

PURPOSE: To reduce the number of parts while securing rigidity in a part to which a fuel tank is installed, and to lower a cost. CONSTITUTION: A vehicle body member 4 is constructed of a cross member 32 arranged in the vehicle width direction between rear side members 31, the first bracket 2 and the second bracket 3 which are provided with approximately U-shaped cross sections. In the lower end of a side face 3b in the second bracket 3, a substantially horizontal face 5 is arranged, while in the lower end of an upper face 2a in the first bracket 2, an extension part 2b extended to the substantially horizontal face 5 is arranged. The substantially horizontal face 5 and the extension part 2b are fixed with a belt 6 which is arranged in the front part in the vehicle body member 4 so as to be used for installation of a fuel tank.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle axle beam suspension structure.

[0002]

2. Description of the Related Art As an arrangement structure of a conventional vehicle axle beam type suspension, there is, for example, one shown in FIGS. FIG. 9 is a front view of a vehicle axle beam type suspension viewed from the front of the vehicle,
10 is a perspective view showing the structure of the vehicle body member, and FIG. 11 is FIG.
SD-SD sectional view of FIG. 12, and FIG. 12 is an SE-SE sectional view of FIG.

Reference numeral 34 is a vehicle body member. Body member 34
Is composed of a cross member 32 and a Panhard rod bracket 33. The cross member 32 is arranged between a pair of left and right rear side members 31 along the vehicle body front-rear direction, and one end of a Panhard rod 35 is rotatably attached to the lower end of the Panhard rod bracket 33. ing. The other end of the Panhard rod 35 is rotatably attached to the axle beam 36, while the left and right rear wheels (not shown) are connected to both ends of the axle beam 36.

An anisotropic bush 37 is interposed between the other end of the Panhard rod 35 and the axle beam 36 so that the axle beam 36 can be displaced in the axial direction of the Panhard rod 35.

On the other hand, reference numeral 38 is an assist link, one end of which is attached to an intermediate position of the Panhard rod 35 and the other end of which is attached to the axle beam 36.

FIG. 10 shows the structure of a vehicle body member 34 in the prior art. The cross member 32 has an inverted hat shape in cross section, an upper edge flange 32a is fixed to the floor panel 39 to form a closed cross section with the floor panel 39, and flanges 32b at both ends are fixed to the rear side member 31.

The Panhard rod bracket 33 has a substantially inverted triangular shape, and is arranged on the front surface and the rear surface of the cross member 32, respectively. An attachment portion 34 a for attaching the Panhard rod 35 to the vehicle body member 34 is provided at the lower end of the Panhard rod bracket 33.

Further, as shown in FIG. 11, the Panhard rod bracket 33 is provided with a flange 33a in the front-rear direction of the vehicle body at the lower edge of the upper portion thereof, and is installed and fixed between the Panhard rod brackets 33.

On the other hand, reference numeral 43 is a bracket, which is fixed to the front surface of the Panhard rod bracket 33 located on the front side of the vehicle body, and is used for attaching a fuel tank (not shown) located in front of the vehicle body member 34 to the vehicle body. One of the belts (not shown) of the book is fixed. The other side of the belt is attached to the cross member 3 by the nut plate 44.
Fixed to 2.

Reference numeral 41 is a strut and reference numeral 42 is a trailing arm.

A conventional technique of this kind is disclosed in Japanese Patent Laid-Open No. 6-9.
There is one disclosed in Japanese Patent No. 2121.

[0012]

However, in the prior art of this type, when the fuel tank is attached to the vehicle body, if a belt (not shown) is directly fixed to the vehicle body member 34, the belt is fixed. Since the rigidity becomes insufficient, it is necessary to provide the bracket 43, the nut plate 44, and the like as separate parts, which causes an increase in cost due to an increase in the number of parts.

In view of the above problems, the present invention provides an axle beam type suspension structure for a vehicle, which secures the rigidity of a portion to which a fuel tank is attached and reduces the number of parts to reduce the cost. is there.

[0014]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the invention described in claim 1 is arranged in a pair along the longitudinal direction of the vehicle body. A vehicle body member that is provided between the rear side members and has a convex shape toward the lower side of the vehicle body; and a Panhard rod that has one end attached to the vehicle body member and the other end attached to an axle beam that connects the left and right rear wheels. In a vehicle axle beam type suspension structure provided with the vehicle body member, the vehicle body member is disposed between the rear side members in the vehicle width direction, and a cross member forming a closed cross section together with a floor panel, and a cross-section substantially U-shaped. And a first bracket whose one end is fixed to one end of the cross member, a substantially U-shaped cross section including a wall surface facing the vehicle body front-rear direction and a side surface connecting the wall surface end. A second bracket, one end of which is fixed to the other end of the cross member and the other end of which is overlapped with the other end of the first bracket to which the Panhard rod is attached together with the first bracket; A side surface on the other end side of the first bracket is formed with a substantially horizontal surface, while the other end portion of the first bracket is provided with an extending portion extended to the substantially horizontal surface. The extending portion is fixed together with a mounting member for mounting a fuel tank arranged in front of the vehicle body member.

According to a second aspect of the present invention, the first bracket is opened to the lower side of the vehicle body and the Panhard rod is located right below.

According to a third aspect of the present invention, the wall surface of the second bracket extends right above the mounting portion of the Panhard rod.

According to the invention described in claim 42, the second bracket is opened to the inner side of the vehicle body, and the vehicle component is arranged on the inner surface side of the second bracket.

[0018]

According to the means described in claim 1, the extending portion of the first bracket and the mounting member of the fuel tank are fixed together on the substantially horizontal surface formed on the side surface on the other end side of the second bracket. Therefore, the rigidity of the portion to which the fuel tank is attached can be ensured without providing another component such as a bracket.

According to the second aspect of the present invention, the cross section of the first bracket opens toward the lower side of the vehicle body, and the Panhard rod is located directly below the first bracket. When the shape of the body member was limited so that a space was provided between the Panard rod and the Panhard rod so as not to interfere with the body member even if the Panard rod rotates, the Panard rod rotates due to input from the road surface. However, since there is a spatial allowance as much as the Panhard rod enters the space formed on the inner surface side of the first bracket, the first bracket can be formed in a linear shape and arranged, and the mounting portion for mounting the Panhard rod can be The rigidity is improved.

According to the third aspect of the present invention, since the wall surface of the second bracket extends right above the mounting portion for mounting the Panhard rod, the mounting portion can be seen in a cross section taken in the vehicle longitudinal direction. In this case, since the closed cross section is formed by the cross member and the first bracket and the second bracket, the rigidity with respect to the input in the vehicle longitudinal direction is improved.

According to the means described in claim 4, since the vehicle constituent parts are arranged in the space on the inner surface side of the second bracket through the space formed between the first bracket and the second bracket, it is conventionally wasteful. It is possible to effectively use the space in the vehicle body member, which was a large space. In addition, even if the component needs a member for covering the surroundings when installed outside the vehicle, the second bracket itself also serves as a cover member, so that it is possible to prevent an increase in the number of components. .

[0022]

Embodiments of the present invention will be described below with reference to the drawings. The same parts as those of the conventional technique are designated by the same reference numerals, and duplicate description will be omitted.

1 to 8 show an embodiment of the present invention. 1 is a front view showing the structure of the vehicle body member as seen from the front of the vehicle, FIG. 2 is an exploded perspective view of the vehicle body member, and FIG. 3 is FIG.
4 is a sectional view taken along the lines SA-SA, SB-SB and SC-SC in FIG. 1, FIG. 7 is a side view showing a fuel tank mounting structure, and FIG. 8 is a vehicle body. It is the top view which showed the lower part.

First, the overall configuration will be described. The vehicle body member 4 includes a cross member 32, a first bracket 2, and a second bracket 3. The first bracket 2 has one end,
In particular, the upper end is fixed to the right end as one end of the cross member 32, and the second bracket 3 is fixed to one end, particularly the upper end here to the left end corresponding to the other end of the cross member 32. Furthermore, the first bracket 2 and the second bracket 3 are overlapped and fixed to each other on the lower end side as the other end.

At the lower end of the vehicle body member 4 in which the first bracket 2 and the second bracket 3 are fixed to each other, the mounting portion 4a is provided and the Panhard rod 35 is mounted. At this time, the Panhard rod 35 is located directly below the first bracket 2.

Further, as is apparent from FIGS. 7 and 8, a fuel tank 9 is disposed below the floor panel 39 in front of the vehicle body member 4, and the belt 6 which is a mounting member for the fuel tank 9. Is attached to the bottom of the vehicle.

More specifically, the first bracket 2 has a substantially U-shaped cross section, a flange 2d extending in the front-rear direction of the vehicle body is extended at the upper end, and the cross member 32 is positioned so as to be sandwiched and fixed. It In addition, an extension portion 2b extends from the lower end of the upper surface 2a of the first bracket 2.

On the other hand, the second bracket 3 is formed to have a substantially U-shaped cross section, which is composed of two wall surfaces 3a, 3a facing the front-rear direction of the vehicle body and a side surface 3b connecting the ends of the wall surfaces 3a, 3a. Further, the opening having a substantially U-shaped cross section is located so as to face the inner side of the vehicle body.

The wall surface 3a of the second bracket 3 is formed so as to extend from the left end of the cross member 32 to just above the mounting portion 4a in the vehicle width direction, and the upper end of the wall surface 3a sandwiches the cross member 32. The flange 3d, which is welded and extends from the upper end of the side surface 3b, is fixed to the lower surface of the rear side member 31.

A bulging portion 5a is provided on the lower portion of the side surface 3b. The bulging portion 5 is, as is clear from the drawing,
It has a substantially horizontal surface 5 formed substantially horizontally.

The first bracket 2 and the second bracket 3 are provided with holes 4a and 4a at the same position in the state where the lower ends of the two are superposed and fixed to each other, and this constitutes a mounting portion. That is, the Panhard rod 35 is attached to the first bracket 2 and the second bracket 3 via the shaft inserted in the hole provided in the attachment portion 4a.

Further, the extending portion 2b of the first bracket 2 overlaps with the substantially horizontal surface 5 and is provided with bolt holes 8 and 8 at the same positions as the substantially horizontal surface 5, respectively. The rear ends of one of the belts 6, 6 are fixed together here by bolts and nuts. The rear end of the other belt 6 is fixed to the cross member 32 by the nut plate 44,
The front ends of the two belts 6 are fixed to the seat cross member 11 by a nut plate 44.

Further, a canister 7, which is a vehicle component, is attached to the inner surface 3c side of the second bracket 3 via a bracket (not shown).

Reference numeral 10 is an exhaust tube, and reference numeral 12 is a spare tire pan recessed in the floor panel 39.

Next, the operation of this embodiment will be described. The belt 6 on one side of the fuel tank 9 is fixed together with the substantially horizontal surface 5 of the second bracket 3 and the extending portion 2b of the first bracket 2, so that the rigidity of the portion to which the fuel tank 9 is attached is ensured while the belt 6 is fixed. Separate parts can be eliminated, and cost can be reduced by reducing the number of parts.

On the other hand, when the Panhard rod 35 is rotated as shown by the chain double-dashed line in FIG.
As shown in FIG. 5, since the Panhard rod 35 enters the space formed by the inner surface 2c of the first bracket 2,
Even though the first bracket 2 is linearly formed, it does not interfere with the first bracket 2. Moreover, since the first bracket 2 is formed in a linear shape, the mounting portion 4
It is possible to improve the rigidity of “a”, which in turn improves the mounting rigidity of the suspension.

Further, as is clear from FIG. 6, in the cross section cut in the vehicle front-rear direction by the mounting portion 4a, the cross member 32 and the first bracket 2 and the second bracket 3 form a closed cross section. This is advantageous in improving the rigidity of the suspension mounting portion with respect to the input in the vehicle front-rear direction.

Further, since the canister 7 is disposed on the inner surface 3c side of the second bracket 3 through the space formed between the first bracket 2 and the second bracket 3, the vehicle body member 4 which has conventionally been a wasteful space. The space inside can be used effectively. Further, the canister 7 needs a cover member when it is arranged outside the vehicle for safety and durability improvement, but since the second bracket 3 itself also serves as a cover member, the number of parts is increased. Can be suppressed, which is advantageous in terms of cost reduction.

[0039]

According to the means described in claim 1, in the substantially horizontal plane formed on the side surface on the other end side of the second bracket,
Since the extending portion of the first bracket and the attachment member of the fuel tank are fixed together, the rigidity of the portion to which the fuel tank is attached can be secured without providing a separate component such as a bracket. Therefore, it is possible to reduce the cost by reducing the number of parts while securing the rigidity of the portion to which the fuel tank is attached.

According to the second aspect of the present invention, the cross section of the first bracket is opened toward the lower side of the vehicle body, and the Panhard rod is located directly below the first bracket. When the shape of the body member was limited so that a space was provided between the Panard rod and the Panhard rod so as not to interfere with the body member even if the Panard rod rotates, the Panard rod rotates due to input from the road surface. However, since there is a spatial allowance as much as the Panhard rod enters the space formed on the inner surface side of the first bracket, the first bracket can be formed in a linear shape and arranged, and the mounting portion for mounting the Panhard rod can be The rigidity is improved. As a result, the rigidity of the suspension mounting portion is improved.

According to the third aspect of the present invention, since the wall surface of the second bracket extends right above the mounting portion for mounting the Panhard rod, the mounting portion can be seen in a cross section taken in the vehicle longitudinal direction. In this case, since the closed cross section is formed by the cross member and the first bracket and the second bracket, the rigidity with respect to the input in the vehicle front-rear direction is improved, which is advantageous in improving the rigidity of the suspension mounting portion.

According to the means described in claim 4, the vehicle component is disposed in the space on the inner surface side of the second bracket through the space formed between the first bracket and the second bracket. It is possible to effectively use the space in the vehicle body member, which was a large space. Further, even if the component is a component that requires a member for covering the surroundings when it is installed outside the vehicle, the second bracket itself also serves as a cover member, thus preventing an increase in the number of components. It is advantageous in terms of cost reduction.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention viewed from the front of a vehicle.

FIG. 2 is an exploded perspective view of a vehicle body member showing an embodiment of the present invention.

FIG. 3 is a front view showing an essential part A of FIG. 1 showing an embodiment of the present invention.

FIG. 4 is a sectional view taken along the line SA-SA in FIG. 1, showing an embodiment of the present invention.

5 is an SB-SB sectional view of FIG. 1 showing an embodiment of the present invention.

6 is a cross-sectional view taken along the line SC-SC of FIG. 1, showing an embodiment of the present invention.

FIG. 7 is a side view showing the mounting structure of the fuel tank according to the embodiment of the present invention.

FIG. 8 is a plan view showing a lower portion of the vehicle body showing the embodiment of the present invention.

FIG. 9 is a front view showing a conventional technique as seen from the front of the vehicle.

FIG. 10 is a perspective view showing a structure of a vehicle body member showing a conventional technique.

FIG. 11 is a sectional view taken along the line SD-SD in FIG. 7, showing a conventional technique.

FIG. 12 is a cross-sectional view taken along the line SE-SE of FIG. 7, showing a conventional technique.

[Explanation of symbols]

 2 1st bracket 2a Upper surface 2b Extension part 3 2nd bracket 3a Wall surface 3b Side surface 3c Inner surface 4 Car body member 4a Hole (mounting part) 5 Substantial horizontal plane 6 Belt (mounting member) 7 Canister (vehicle component part) 9 Fuel tank 31 Rear side Member 32 Cross member 35 Panhard rod 36 Axle beam 39 Floor panel

Claims (4)

[Claims] 1. A vehicle body member, which is provided between a pair of left and right rear side members arranged along a vehicle body front-rear direction and has a convex shape toward the lower side of the vehicle body, and one end of which is attached to the vehicle body member, In an arrangement structure of an axle beam suspension for a vehicle having an end beam attached to an axle beam connecting left and right rear wheels, the vehicle body member is provided between the rear side members in a vehicle width direction. And a cross member that forms a closed cross-section with the floor panel, a first bracket that has a substantially U-shaped cross section, and has one end fixed to one end of the cross member; Has a substantially U-shaped cross-section, and one end is fixed to the other end of the cross member, and the other end is overlapped with the other end of the first bracket to form the first bracket. A second bracket to which the Panhard rod is attached together with a bracket, and a substantially horizontal plane is formed on a side surface on the other end side of the second bracket, while a substantially horizontal plane is formed on the other end of the first bracket. A vehicle axle provided with an extending portion extending up to, and the substantially horizontal surface and the extending portion being fixed together with a mounting member for mounting a fuel tank disposed in front of the vehicle body member. Beam suspension structure. 2. The arrangement structure for an axle beam suspension for a vehicle according to claim 1, wherein the first bracket is opened to a lower side of the vehicle body and the Panhard rod is positioned directly below. 3. The wall surface of the second bracket extends right above the mounting portion of the Panhard rod.
The arrangement structure of the vehicle axle beam suspension described. 4. The vehicle axle beam suspension according to claim 1, wherein the second bracket has an opening toward an inner side of the vehicle body, and a vehicle component is provided on an inner surface side of the second bracket. Construction.