JPH0356464Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a reinforcing device that prevents as much as possible the crushing of a truck cab due to a collision load acting in the front direction of a vehicle.

<Prior Art and Problems> The cab of a truck, which constitutes the cabin in which passengers ride, is provided on the main frame of the chassis.
This cab can be tilted for maintenance and inspection of the engine installed at the bottom, and for this purpose, the front part of the cab is rotatably supported by a front mount frame attached to the main frame, and the cab is The rear end is supported by a rear mount frame provided on the main frame.

Such a cab tilt type truck has a structure in which a cab made of sheet metal is supported on a frame which is a strength member. For this reason, when a truck crashes, the frame cannot sufficiently support the collision load that is also applied to the cab, and when the collision load is extremely large, the cab buckles forward (crumps). However, there was a problem that there was insufficient living space inside the cab. Note that the load received from the occupant during a collision through the seat belt, which is normally anchored to the rear end of the cab, is also a major factor in the collapse of the cab.

The present invention has been developed in view of the above-mentioned conventional circumstances, and it is an object of the present invention to provide a truck cab reinforcing device that prevents the cab from collapsing as much as possible in the event of a collision and ensures sufficient living space.

<Means for solving the problems> The structure of the present invention to achieve the first objective is as follows:
In a truck in which a lower front end of the cab is tiltably pivoted to a main frame and a lower rear end of the cab is supported by a rear mount frame extending upward from the main frame, a receiving member is mounted on the rear mount frame. is fixed by extending the member locking portion upwardly, and a hook member facing the receiving member at a predetermined distance rearward is extending downwardly from the member engaging portion to fix the hook member. It is fixedly installed at the lower part of the rear end of the cab, and the distance is set so that the engaging part does not engage with the locking part during normal tilting movement about the pivot point. do.

<Operation> When a truck collides and the cab begins to collapse forward, the hook member and the receiving member fit together to firmly connect the cab and the rear mount frame, and the collision load applied to the cab is reduced. supported by a frame.

<Example> A cab reinforcing device according to an example of the present invention will be described based on the drawings. FIG. 1 is a schematic diagram of the cab support structure, and FIG. 2 is a diagram of the cab reinforcement device.

As shown in the figure, the cab 1 is placed on the main frame 2 of the truck, the lower front end of the cab 1 is rotatably supported by a front mount frame 3 provided on the main frame 2, and the lower rear end of the cab 1 is rotatably supported. is supported by a rear mount frame 4 provided on the main frame 2. Therefore, by removing the lock mechanism (not shown) interposed between the cab 1 and the rear mount frame 4, the cab 1 can be rotated (tilted) upward using the front mount frame 3 as a hinge. It is now possible to create a work space for maintenance and inspection of engines, etc.

A receiving member 5 having high rigidity is fixed to the upper end of the rear mount frame 4. Further, a hook member 6 having high rigidity is fixed to the lower rear end of the cab 1. The receiving member 5 and the hook member 6 are arranged to face each other with a predetermined interval apart, and the engaging portion of the hook member 6 does not engage with the locking portion of the receiving member 5 when the cab 1 is tilted. There is.

According to the above configuration, even if a truck collides and a forward collision load is applied to the cab 1, the collapse of the cab 1 can be suppressed to the extent that a sufficient living space can be maintained. That is, as shown by the imaginary line in FIG. 1, when the cab 1 begins to collapse due to a collision load, the hook member 6 approaches the receiving member 5 and engages with each other, causing the rear end of the cab 1 to collapse. The lower part is firmly connected to the highly rigid rear mount frame 4 via the receiving member 5 and the hook member 6, and the collision load is supported by the frame, suppressing subsequent collapse of the cab 1. It is.

<Effects of the invention> According to the truck cab reinforcing device according to the present invention, while maintaining the tilt function well, the collision load applied to the cab is supported by the frame side, preventing the cab from being crushed excessively. It is possible to maintain a comfortable living space. Note that this effect is more pronounced when the seat belt is worn, which causes a larger collision load to be applied to the cab.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the cab support structure, and FIG. 2 is a diagram of the cab reinforcement device. In the drawings, 1 is a cab, 4 is a rear mount frame, 5 is a receiving member, and 6 is a hook member.

Claims (1)

[Scope of utility model registration request] In a truck in which a lower front end of the cab is tiltably pivoted to a main frame and a lower rear end of the cab is supported by a rear mount frame extending upward from the main frame, a receiving member is mounted on the rear mount frame. is fixed by extending the member locking portion upwardly, and a hook member facing the receiving member at a predetermined distance rearward is extending downwardly from the member engaging portion to fix the hook member. It is fixedly installed at the lower part of the rear end of the cab, and the distance is set so that the engaging part does not engage with the locking part during normal tilting movement about the pivot point. A cab reinforcement device for trucks.