JP2500144Y2 - Cabover-type vehicle cab with durability against collision impact - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cab of a cab-over type vehicle.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 9, a skeletal structure of a driver's cab of a cab-over type vehicle having a size of medium or larger is basically a front pillar (a) vertically provided on a front surface, It consisted of a cantilever side (b) that was oriented horizontally at the top, an underframe (c) that was horizontally installed at the bottom, and rear pillars (d) that were vertically installed on the left and right sides of the interior, forming a box-like configuration. .

[0003]

[Problems to be Solved by the Invention] According to the conventional structure,
When a vehicle undergoes a frontal collision or an extreme rear-end collision, the compression force acts on the upper reinforcement forming the cantilever side (b) and the lower reinforcement forming the underframe (c). Since the compression energy cannot be absorbed sufficiently, the cantilever side (b) and the underframe (c) are largely deformed in the central portion into a mountain shape or a valley shape, and the cab is crushed inward. Therefore, there is a problem that the driver's life holding space and rescue required space cannot be secured. In order to solve this problem, there was a beam provided inside the door, that is, a beam with a reinforcement in the front-back direction in the center, but this structure does not have an energy absorbing part at the time of impact, so a sufficient durability effect is obtained. I couldn't show it. In this invention, the upper rain hose and the lower rain hose have a structure that can absorb the impact force in the front-rear direction to some extent, and a door beam is installed inside the door to counteract the impact force, so that it can be installed in the cab even in an emergency. This is a device aimed at maintaining life and securing a space for rescue.

[0004]

The present invention relates to a cab 5 of a cab-over type vehicle having a skeleton formed by combining a front pillar 1, an upper rain hose 2, a lower rain hose 3 and a rear pillar 4 with the above-mentioned upper part. In the rain hose 2, a portion corresponding to the front chamber portion 5b of the cab 5 is made thick to form a thick portion 2a, and a portion corresponding to the rear chamber portion 5c of the cab 5 is made thin to form a thin portion 2b. The lower rain hose 3 has a crank-shaped step 3a at a portion corresponding to the rear chamber 5c of the operator's cab 5, and absorbs the impact force at the time of collision at the thin portion 2b and the step 3a. Further, a door beam 7 is installed in the front and rear direction inside the door 6 provided in the operator's cab 5, and the impact force at the time of a frontal collision is applied to the door beam 7 and the lower rain hose 3.
I tried to accept it.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a vertical side view of a driver's cab 5 of a cab-over type vehicle according to the present invention, in which 1 is a front pillar constituting the front part of the cab 5, 2 is an upper rain hose constituting the upper part, and 3 is A lower rain hose 4 constituting a bottom portion is a rear pillar constituting a rear portion.

As shown in FIG. 2, it is assumed that the operator's cab 5 is divided into a front portion 5a, a front chamber portion 5b, and a rear chamber portion 5c, and the upper rain hose 2 corresponds to the front chamber portion 5b. The portion to be formed is made thick to form the strong resistant portion 2a and the rear chamber portion 5 is formed.
The portion corresponding to c is thinned to form a thinned portion 2b.

The front chamber 5 of the lower rain hose 3
A crank-shaped step portion 3a is formed at a portion corresponding to a boundary between b and the rear chamber portion 5c.

Reference numeral 6 is a door which is attached to both side surfaces of the operator's cab 5 so as to be openable and closable, and pipes 8 and a reinforcing plate 9 are provided at a substantially middle portion between the front frame 6a and the rear frame 6b constituting the door 6.
・ Install the door beam 7 via 9 and. In the figure, 10 is a steering wheel, 11 is a seat, and 12 is a nap bed.

[0009]

Since the present invention is constructed as described above, the impact force in the event of a collision or rear-end collision acts on the thin portion 2b of the upper rain hose 2 as compared to the strong portion 2a. Collapse.

Further, in the lower rain hose 3, the upper edge 3b and the lower edge 3c of the step portion 3a are bent. On the other hand, in the door 6, the impact force is the pipe 8.8 and the reinforcing plate 9.9.
However, the front frame 6a and the rear frame 6b are hit by the door beam 7 and their shape is prevented.

[0011]

According to the present invention, the impact force applied to the driver's cab in the front-back direction due to the occurrence of an accident acts on the thin portion of the upper rain hose and the step portion of the lower rain hose, respectively, and In the rain hose, the part corresponding to the rear part of the cab is curved (Fig. 8), and the step part of the lower rain hose is deformed into an S shape (Fig. 8), and collision energy is absorbed. It is possible to reduce the deformation of the skeleton in the parts corresponding to the front part and the anterior chamber part as compared with the conventional one. The impact force applied to the door at the time of a collision is received by the door beam that is installed inside the door in the front-rear direction, and the set positions of this door beam correspond to the front part and the front part of the cab. Along with the fact that the rain hose secures a certain amount of space in the driver's cab during a collision, the driver's cab will not be crushed as in the past, and the degree of securing a space for life preservation and rescue work can be increased. It is a thing.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a driver's cab and a door of the present invention.

FIG. 2 is an explanatory diagram of a division of a layout position of a steering wheel, a seat, and a nap bed in a driver's cab.

FIG. 3 is an enlarged vertical side view of an upper rain hose.

FIG. 4 is a perspective view of a door whose outer surface is partially cut.

FIG. 5 is an enlarged perspective view of one embodiment of a door beam.

FIG. 6 is a perspective view of another embodiment of the door beam.

FIG. 7 is a perspective view of a lower rain hose.

FIG. 8 is a vertical cross-sectional side view showing a deformed state of a driver's cab during a collision or a rear-end collision.

FIG. 9 is a vertical sectional side view showing a skeletal structure of a conventional cab.

FIG. 10 is a vertical cross-sectional side view showing the deformed state of the skeleton when the cab having the conventional skeleton structure receives an impact.

[Explanation of symbols]

1 front pillar 6a front frame 2 upper rain hose 6b rear frame 2a strong part 7 door beam 2b thin part 8/8 pipe 3 lower rain hose 9/9 reinforcing plate 3a step 10 steering 3b upper edge 11 seat 3c lower edge 12 nap Bed 4 Rear pillar 5 Driver's cab Front pillar 5a Front part Locator rail side 5b Front chamber part H underframe 5c Rear part rear pillar 6 Door

Claims (1)

(57) [Scope of utility model registration request] 1. A front pillar 1 and an upper rain hose 2
In a driver's cab 5 of a cab-over type vehicle having a skeleton formed by combining a lower rain hose 3 and a rear pillar 4, the upper rain hose 2 has a thickened portion corresponding to the front chamber 5b of the driver's cab 5. To form the thick portion 2a and thin the portion corresponding to the rear chamber portion 5c of the operator's cab 5 to thin the thin portion 2a.
b, the lower rain hose 3 has a crank-shaped step 3a at a portion corresponding to the rear chamber portion 5c of the cab 5,
The thin portion 2b and the stepped portion 3a absorb the impact force at the time of a collision, and a door beam 7 is installed in the door 6 provided in the operator's cab 5 in the front-rear direction. And a lower rain hose 3 for receiving the cab of a cab-over type vehicle having durability against a collision impact.