JPH09328082A - Floor structure for cab-over type automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure a foot part space of an occupant at head on collision time against an obstacle with the large lowest ground height. SOLUTION: In the center of a front part 21 of a floor panel 2, a tunnel- shaped center reinforce 4 connecting a front panel 1 and a rise up part 22 of a floor panel 2 is arranged, in the case of colliding against an obstacle B with a high lowest ground height, a rear end of the center reinforce 4 is brought into contact with a power train of radiator R, engine E, etc., by reaction force thereof, rearward moving of the front panel 1 is impeded, decreasing of a foot part space of an occupant in a seating attitude can be small suppressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure of a cab-over type automobile.

[0002]

2. Description of the Related Art In a cab-over type automobile, as shown in FIG. 6, a driver's cab is arranged above an engine E, and a front portion 21 of a floor panel 2 is formed in a position lower in front of the engine E so that a passenger is seated. It forms a foot space.

[0003]

Therefore, when a frontal collision occurs at a position higher than the floor panel 2, the front panel 1
However, there is a problem in that the foot space of the seated occupant is reduced due to the rearward deformation and movement. This is because conventionally, a member for absorbing the collision energy with respect to the obstacle B having a high ground clearance is not specially provided in the front panel 1 of the cab-over type automobile, and therefore the front bumper has a function of absorbing the collision energy at the time of the collision. Therefore, the front panel 1 cannot be prevented from being deformed and moved rearward.

Therefore, the present invention focuses on the effective use of the power train of the radiator R, the engine E, and the like in the case of a frontal collision with an obstacle B having a high ground clearance, so that the front panel 1 can be deformed rearward. An object of the present invention is to provide a floor structure for a cab-over type automobile that can prevent the passengers from sitting and secure a space under the occupant's feet.

[0005]

According to the present invention, the front panel 1 and the floor panel 2 are provided in the center of the front portion 21 of the floor panel 2.
It is characterized in that a tunnel-shaped center reinforcement 4 is provided to connect with the rising portion 22 of.

As shown in FIGS. 1 and 4, when the cab-over type vehicle has a frontal collision with an obstacle B having a high ground clearance, the front panel 1 has a vertical direction between the center reinforcement 4 and the obstacle B. The lap margin "L" causes the center reinforcement 4 to buckle and deform to absorb collision energy, thereby preventing the rearward movement. When the collision load is further increased, the rear end of the center reinforcement 4 has the rising portion 22 of the floor panel 2.
Through the power train of the engine R and the radiator R in the engine room 3 and the reaction force thereof prevents the rearward movement of the front panel 1 further, thereby reducing the foot space of the seated occupant. Can be kept small.

[0007]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described with reference to FIGS. The passenger seat S in the cab-over type automobile is installed above the engine room 3 surrounded by the rising portion 22 and the rear portion 23 of the floor panel 2.

The front portion 21 of the floor panel 2 is formed to be one step lower in front of the engine room 3, and its front end is joined to the lower end of the front panel 1. On the lower surface of the floor panel 2, a pair of left and right floor members 5
Are disposed along the front portion 21, the rising portion 22, and the rear portion 23. On the upper surface side of the front portion 21 of the floor panel 2, a tunnel-shaped center reinforcement 4 that connects the front panel 1 and the rising portion 22 of the floor panel 2 is arranged in the center to form a closed cross-section box. . The center reinforcement 4 has a lower end at the front portion 2 of the floor panel 2.
The two floor members 5 are overlapped with each other and are bonded to each other through the pair 2 to form a collision energy absorbing member together with the floor members 5.

In the cab-over type automobile of the present invention having the above structure, when a frontal collision occurs with an obstacle B having a high ground clearance, as shown in FIG. However, when a large collision load is applied, the rear end of the reinforcement 4 is placed in the radiator R and the engine E in the engine room 3.
The front panel 1 is prevented from moving rearward by abutting against the power train such as the above, and the reduction of the foot space of the seated occupant can be suppressed.

[0010]

According to the structure of the floor panel of the present invention,
In the event of a head-on collision with an obstacle with a high ground clearance, the center reinforcement absorbs the collision energy together with the floor members even if the bumper function does not work, and the rear end of the center reinforcement has the power of the radiator and engine. The front panel can be prevented from moving rearward by abutting against the train and its reaction force can be secured, and a foot space for the occupant in the sitting posture can be secured.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a cab-over type automobile according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a center reinforcement arrangement portion of the cab-over type automobile of the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is an explanatory diagram showing a state after a collision according to the embodiment of the present invention.

FIG. 5 is a side view of a main part of a conventional cab-over type automobile.

FIG. 6 is an explanatory view showing a state after a collision of a conventional cab-over type automobile.

[Explanation of symbols]

 1 ... Front panel 2 ... Floor panel 21 ... Front part 22 ... Rise part 23 ... Rear part 3 ... Engine room 4 ... Center reinforcement 5 ... Floor member

Claims (1)

[Claims] 1. In a cab-over type automobile in which a driver's cab is arranged above an engine and a front part of a floor panel is formed lower in front of the engine, a front panel and a floor panel are provided at the center of the front part of the floor panel. A cabover type automobile floor structure, characterized in that a tunnel-shaped center reinforcement that connects the rising portion is arranged.