JPH0577763A - Lower body structure of car - Google Patents

Abstract

PURPOSE:To reduce the assembly manhour and improve the rigidity. CONSTITUTION:A boat-shaped connecting member 1 is held by reinforcements 2a, 2b on both sides, tension brackets 3a, 3b are held by the right and the left reinforcements 2a, 2b in the lower part of the boat-shaped connecting member 1. The fore end of a frame 4 extending in the longitudinal direction of a vehicle is connected to the boat-shaped connecting member 1, and at the same time, held by the right and the left reinforcements 2a, 2b, and a cross member 5 is fixed to the forward side part of the boat-shaped connecting member 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower body structure of an automobile.

[0002]

2. Description of the Related Art Conventionally, a cabover type automobile 51 as shown in FIG. 9 employs a front frame structure as shown in FIG. 10, for example. That is, in such a front frame structure, the left and right center frames 5
A cross member 54 is provided at the tip end portions of the reference numerals 2, 53, and a floor panel 55 is provided above the structure including them. Here, 56 is a tension rod, and the front end portion of this tension rod 56 is attached to the cross member 54 via a bracket 57. Here, in the structure as shown in FIG. 10, the tension rod 56 having the structure as shown in FIG. 11 is adopted, and the bracket 57 is fixed to the cross member 54 from below by the bolt 58.

[0003]

However, when the lower body structure of the automobile is constructed as described above, the bracket 57 is used.
There is a drawback that the number of steps is increased, such as bolting at several points.

Further, merely fixing the bracket 57 to the lower side of the cross member 54 in this way is not a perfect fixing method.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a boat-shaped joint member is sandwiched between left and right reinforcements, and the left and right reinforcements are located below the boat-shaped joint member. Pinch the tension rod bracket by means of a joint, connect the front end of the frame extending in the front-rear direction of the vehicle body to the boat-shaped joint member, and clamp it by the left and right reinforcement members, and a cross member on the front side of the boat-shaped joint member. The present invention provides a fixed lower body structure of a vehicle.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The lower body structure of an automobile according to the present invention will be described below with reference to the embodiments shown in the accompanying drawings.

1 to 3 show an embodiment of a lower body structure of an automobile according to the present invention, in which 1 is a boat-shaped joint member, 2a and 2b are left and right reinforcements, and 3a and 3b are front and rear. It is a tension rod bracket provided on the.

4 to 8 show the shapes of the boat-shaped joint member 1, the reinforcement 2b, and the tension rod bracket 3b.

In the present embodiment, the left and right reinforcements 2a and 2b are fixed to the boat-shaped joint member 1 by means such as welding so that the boat-shaped joint member 1 is sandwiched and the boat-shaped joint member 1 is positioned below the boat-shaped joint member 1. In, the tension rod brackets 3a and 3b are sandwiched between the left and right reinforcements 2a and 2b. The front end of a frame 4 extending in the front-rear direction of the vehicle body is connected to the boat-shaped joint member 1 by means such as welding, and the frame 4 is fixed to the left and right reinforcements 2a and 2b by means such as welding. There is. As a result, the frame 4 is sandwiched between the reinforcements 2a and 2b.
Further, the cross member 5 is fixed to the front side portion of the boat-shaped joint member 1 by means such as welding.

Tension rod brackets 3a, 3b
As shown in FIG. 8, each has four holes, and the embossments provided on the left and right reinforcements 2a and 2b are inserted into these holes for positioning. The tension rod brackets 3a and 3b are fixed by means such as welding.

Therefore, in the assembly process, the boat-shaped joint member 1 is attached to the left and right reinforcements 2a and 2b.
It is possible to position and fix the tension rod brackets 3a and 3b at the same time by sandwiching and welding with
The number of processes can be reduced. In the subsequent steps, the frame 4 and the cross member 5 may simply be joined.

In the above structure, the frame 4 and the tension rod brackets 3a and 3b are sandwiched between the left and right reinforcements 2a and 2b, and the strength of the mounting portion is strong. Further, the boat-shaped joint member 1 is used for the frame 4
Since the cross member 5 is connected to the cross member 5, the rigidity of this portion is increased and the yield of the frame 4 is improved. Furthermore, not only is the joint rigidity improved by the boat-shaped shape of the joint member 1, but also the boat-shaped joint member 1 is considered to be the part where the frame 4 is inflated, and the fixing point 6 of the tension rod and the frame 4 are close to each other. You can also think of
The rigidity of the tension rod fixing structure itself is improved.

Although the present invention has been described with reference to the above embodiment, modifications and additions obvious to those skilled in the art are included in the technical scope of the present invention.

[0014]

As described above, in the lower body structure for an automobile according to the present invention, the man-hours are reduced and the method of fixing the tension rod bracket is strengthened to eliminate the conventional drawbacks. The joint part can be strengthened and its effect is great.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating an embodiment of a lower body structure of an automobile according to the present invention, excluding a frame and a cross member.

FIG. 2 is a perspective view showing a frame by an imaginary line in an embodiment of a lower body structure of an automobile according to the present invention.

FIG. 3 is a perspective view showing a frame and a cross member in an imaginary line in an embodiment of a lower body structure of an automobile according to the present invention.

FIG. 4 is a side view of a boat-shaped joint member used in an embodiment of the present invention.

FIG. 5 is a front view of a boat-shaped joint member used in an embodiment of the present invention.

FIG. 6 is a plan view of a boat-shaped joint member used in the embodiment of the present invention.

FIG. 7 is a perspective view of a reinforcement used in an embodiment of the present invention.

FIG. 8 is a perspective view of a tension rod bracket used in an embodiment of the present invention.

FIG. 9 is a perspective view of a cab-over type automobile to which the present invention is applied.

FIG. 10 is a plan view illustrating a frame structure of a cab-over type automobile to which the present invention is applied.

FIG. 11 is a perspective view illustrating the configuration of a conventional tension rod.

[Explanation of symbols]

 1 Boat-shaped joint member 2a, 2b Reinforcement 3a, 3b Tension rod bracket 4 Frame 5 Cross member

Claims (1)

[Claims] 1. A boat-shaped joint member is sandwiched between left and right reinforcements, and below the boat-shaped joint member,
The tension rod bracket is sandwiched by the left and right reinforcements, the front end of the frame extending in the front-rear direction of the vehicle body is connected to the boat-shaped joint member, and sandwiched by the left and right reinforcement members, and the front side of the boat-shaped joint member is held. The lower body structure of an automobile with a cross member fixed to the section.