JPH1120745A - Side rail structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attach a bumper member to a side rail without providing a specialized stay, by shaping a part of a side rail extending from a cab-mount bracket to the front end side so as to be bent forward and obliquely downward and by forming an installation seat for the bumper member in one body with the side rail. SOLUTION: A side rail 1 is shaped such that a part extending from a cab- mount bracket 2 to the vehicle front end side is bent forward and obliquely downward and an installation seat 9 for a front under-lamp protector 4 serving as a bumper member is formed in one body with the side rail. The installation seat 9 is formed by fastening a member such as steel plate to a front end of the side rail 1 constituted of a web and flanges, and the front under-lamp protector 4 is attached to the installation seat 9 with fastening parts 8 such as bolts and nuts. By this, a specialized stay, which is to be a separate component, is no more needed, therefore the number of component items being not increased and assembling man-hours being not increased, cost increase can be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle side rail structure.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 5, a vehicle such as a cab overtrack has a side rail 1 having a U-shaped cross section composed of a web and a flange extending in the front-rear direction of the vehicle. A cab mount bracket 2 is attached to the upper surface of the front end of the vehicle, and a cab 3 is attached to the cab mount bracket 2 so as to be tiltable.

In a vehicle as described above, in order to prevent a passenger car or the like from getting under the cab 3 recently,
Front underrun protector 4 as bumper member
Is disposed below the front end of the side rail 1 so as to be located below the front bumper 5.

For this reason, as shown in FIGS. 5 and 6, a special stay 6 is fixed to the lower surface of the side rail 1 at the vehicle front end by fastening parts 7 such as bolts and nuts. The front underrun protector 4 extending in the width direction of the vehicle is mounted by fastening parts 8 such as bolts and nuts.

[0005]

However, as described above, when the exclusive stay 6 is fixed to the lower surface of the vehicle front end of the side rail 1 and the front underrun protector 4 as a bumper member is attached to the stay 6, A dedicated stay 6 as a separate part is required, and the number of parts increases, and the number of assembling steps also increases.

In view of such circumstances, the present invention allows a bumper member to be attached to a side rail without providing a dedicated stay, thereby suppressing an increase in the number of parts and an increase in the number of assembling steps, and cost reduction. It is intended to provide a possible side rail structure of a vehicle.

[0007]

The present invention is characterized in that the front end side of the vehicle from the cab mount bracket of the side rail is bent obliquely downward and forward, and a mounting seat for a bumper member is formed integrally with the side rail. The present invention relates to a vehicle side rail structure.

Further, according to the present invention, the height of the side rail at the front end side of the vehicle is higher than that of the cab mount bracket so that an extension portion is formed below the cab mount bracket, and the mounting seat of the bumper member is formed integrally with the side rail. The present invention relates to a vehicle side rail structure.

According to the above means, the following effects can be obtained.

When the front end side of the vehicle is bent obliquely downward and forward from the cab mount bracket of the side rail, and the mounting seat of the bumper member is formed integrally with the side rail, it is only necessary to mount the bumper member to the mounting seat. In addition, a special stay as a separate part is not required, the number of parts does not increase, the number of assembling steps does not increase, and the cost can be avoided.

When the height of the side rail at the front end side of the vehicle is higher than that of the cab mount bracket so that an extension is formed below the cab mount bracket, and the mounting seat of the bumper member is formed integrally with the side rail, It is only necessary to attach a bumper member to the machine, and a special stay that is a separate part is not required, the number of parts does not increase, the assembly man-hour does not increase,
Cost increases can be avoided.

[0012]

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

FIGS. 1 and 2 show an embodiment of the present invention. In the drawings, the portions denoted by the same reference numerals as those in FIGS. 5 and 6 represent the same components, and the basic configuration is as follows. 5 and FIG. 6 is similar to the conventional one, but the feature of this example is that, as shown in FIG. 1 and FIG. It is bent downward, and the mounting seat 9 of the front underrun protector 4 as a bumper member is formed integrally with the side rail 1.

The mounting seat 9 is formed by fixing a member such as a steel plate to the front end of the side rail 1 composed of a web and a flange.

Next, the operation of the above illustrated example will be described.

As described above, the front end side of the vehicle from the cab mount bracket 2 of the side rail 1 is bent obliquely downward and forward, and the mounting seat 9 of the front underrun protector 4 as a bumper member is formed integrally with the side rail 1. Then, the front underrun protector 4 only needs to be attached to the mounting seat 9 with the fastening parts 8 such as bolts and nuts, and the exclusive stay 6 as a separate part is not required, and the number of parts does not increase, and the number of assembly steps is reduced. And the cost can be avoided.

In this manner, the front underrun protector 4 as a bumper member can be attached to the side rail 1 without providing the exclusive stay 6, so that an increase in the number of parts and an assembling man-hour can be suppressed, and the cost can be reduced. Can be achieved.

FIGS. 3 and 4 show another embodiment of the present invention. In the drawings, the parts denoted by the same reference numerals as those in FIGS. 1 and 2 represent the same parts. The height at the vehicle front end side of the cab mount bracket 2 is higher than the cab mount bracket 2 so that the extension portion 10 is formed below, and the mounting seat 9 ′ of the front underrun protector 4 as a bumper member is integrated with the side rail 1. It is formed.

The mounting seat 9 'is formed by fixing a member such as a steel plate to the front end of the side rail 1 on which the extension 10 consisting of a web and a flange is formed.

As described above, the height of the side rail 1 on the front end side of the vehicle from the cab mount bracket 2 is increased so that the extension 10 is formed on the lower side, and the mounting seat 9 of the front underrun protector 4 as a bumper member is provided. Is integrally formed with the side rail 1, the front underrun protector 4 is simply attached to the mounting seat 9 ′ with the fastening parts 8 such as bolts and nuts, and the exclusive stay 6, which is a separate part, becomes unnecessary. , The number of parts does not increase,
The number of assembling steps does not increase, and cost increases can be avoided.

Thus, in the case of the embodiment shown in FIGS. 3 and 4, similarly to the case of the embodiment shown in FIGS. 1 and 2, the front underrun as a bumper member is provided on the side rail 1 without providing the exclusive stay 6. The protector 4 can be attached, the increase in the number of parts and the increase in the number of assembling steps can be suppressed, and the cost can be reduced.

Incidentally, the side rail structure of the vehicle of the present invention is as follows.
The present invention is not limited to the above illustrated example, and is not limited to the case where the front underrun protector is attached as the bumper member, but the case where the front bumper as the normal bumper member is attached below the height level of the side rail. Also, the gist of the present invention is that the mounting of the bumper member to the mounting seat of the side rail may use welding or the like instead of using fastening parts such as bolts and nuts. Of course, various changes can be made without departing from the scope.

[0023]

As described above, according to the vehicle side rail structure of the present invention, the bumper member can be mounted on the side rail without providing a dedicated stay, thereby increasing the number of parts and the number of assembly steps. Increase can be suppressed,
An excellent effect that the cost can be reduced can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view of an example of an embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is a side view of another example of an embodiment of the present invention.

4 is a view taken in the direction of arrows IV-IV in FIG. 3;

FIG. 5 is a side view of a conventional example.

FIG. 6 is a view taken in the direction of arrows VI-VI in FIG. 5;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Side rail 2 Cab mount bracket 4 Front underrun protector (bumper member) 5 Front bumper (bumper member) 9 Mounting seat 9 'Mounting seat 10 Extension

Claims (2)

[Claims] 1. A shape in which a front end side of a vehicle is bent obliquely downward and forward from a cab mount bracket of a side rail,
A side rail structure for a vehicle, wherein a mounting seat for a bumper member is formed integrally with the side rail. 2. The vehicle according to claim 1, wherein the height of the side rail at the front end side of the vehicle is higher than that of the cab mount bracket so that an extension is formed below the cab mount bracket, and a mounting seat for a bumper member is formed integrally with the side rail. Vehicle side rail structure.