JPH0334348Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention relates to cabs for large trucks, etc.
In particular, the present invention relates to a cab with a retractable boarding ladder, which is equipped with a ladder that can be entered and exited in a direction substantially perpendicular to the longitudinal direction of the vehicle, making it easier to board and exit the cab.

[Prior Art] Conventionally, for example, Japanese Utility Model Application Publication No. 60-105544 discloses a vehicle ladder device that is attached to the side wall of the cab of a large vehicle such as a trailer truck or a dump truck, in which bent portions are provided at the upper and lower portions of the ladder body, respectively. are formed facing each other, and shaft parts are provided vertically and coaxially at right angles to the upper and lower bent parts, and these shaft parts are rotatably supported on the cab ceiling wall and the bottom surface of the cab, and a ladder is installed behind the cab. A vehicle ladder device is described in which the main body rotates to form a storage space,
This allows the ladder to be kept in a retracted position along the cab rear wall while the vehicle is in motion, reducing air resistance, while the ladder tread is placed with a sufficient distance from the cab side wall when the ladder is in use. The company claims that this will have the effect of greatly increasing the safety of climbing up and down ladders.

[Problem to be solved by the invention] In the above-mentioned known example, due to its structure, there is a restriction that the lower part of the ladder body must be located above the front wheels of the vehicle, and therefore there is a restriction that the lower part of the ladder body must be located above the front wheels of the vehicle. When getting on and off the ladder, there is a problem in its use in that the ground clearance at the bottom of the ladder body is too high. Further, since the ladder is stored in a rotary manner, a large surrounding space is required to rotate the ladder, and the ladder cannot be rotated laterally in a narrow road.

[Means for Solving the Problems] This invention was devised in view of the above-mentioned circumstances, and includes a structure in which the side wall near the open end of the door of the vehicle is provided with a structure that is substantially orthogonal to the longitudinal direction of the vehicle and that is external to the vehicle. At least a pair of guide members are attached to the cab along the left-right direction of the vehicle in the storage recess, and at least a pair of step members are fitted to the guide members in a removable manner. A vertical member attached to the outer end of these step members constitutes a ladder main body, and an auxiliary ladder is connected to the ladder main body so as to be movable up and down.
The present invention proposes a retractable cab with a ladder for getting on and off, which is composed of a vertical member that fits into a long hole formed in the vertical member, and step members provided at appropriate intervals above and below the vertical member. be.

[Function] In the above configuration, when in use, first the ladder main body is pulled out to the side, then the auxiliary ladder is extended downward to lower the ground clearance and used for getting on and off, and when stored, after pulling up the auxiliary ladder, the ladder main body is extended. is pulled into the storage recess.

[Example] An example of this invention will be described below based on the accompanying drawings.

Figures 1 and 2 are a perspective view showing the front part of a large truck equipped with a cab of this invention and a perspective view showing the main parts of the cab. In the figures, 1 is a side wall of a cab 2 of this invention. So, on the side wall 1 there is a door 3,
Near the rear of this door 3, a storage recess 4 is formed which is substantially perpendicular to the longitudinal direction of the vehicle and which is long in the vertical direction and can accommodate the ladder 12. Note that the opening 5 of the storage recess 4
is open to the outside world.

At least one pair of guide members 6 that can guide the cab in the left-right direction are attached in the storage recess 4. The ladder main body 7 has a plurality of horizontally long step members 7b arranged side by side at appropriate intervals in the vertical direction on a vertically long cylindrical vertical member 7a. By fitting in the housing recess 4 so as to be removable in the left-right direction, it is stored in the storage recess 4 so as to be removable in the left-right direction through the opening 5. At this time, the sliding range of the step member 7b is limited by the pin 9 that is engaged with the elongated hole 8 formed in the left-right direction in the guide member 6.

A notch 7c whose lower end is opened is formed in the lower end of the vertical member 7a of the ladder main body 7 along the vertical direction, and the vertical member 1 forming a part of the auxiliary ladder 10
0a is slidably engaged so that it can extend downwardly. The auxiliary ladder 10 is provided with a plurality of step members 10b which are long in the left-right direction and are vertically spaced at appropriate intervals, and the step members 10b are connected to the ladder main body 7.
It protrudes outward from the notch 7c of the vertical member 7a.
Note that the downward extension width of the auxiliary ladder 10 is limited by a pin 11 slidably locked in a vertically elongated hole 7d formed in the vertical member 7a of the ladder main body 7. The ladder main body 7 and the auxiliary ladder 10
A retractable ladder 12 is formed.

Since the cab 2 of this invention is as described above, when opening the door 3 of the cab 2 and getting down, the stored ladder 12 is pulled out in the side direction A, and the step member 7b of the ladder body 7 is pulled out. After stepping halfway down, the user extends the lower auxiliary ladder 10 with his feet in the downward direction B, and similarly steps onto the step member 10b to descend to the ground. Further, when getting into the cab 2, the ladder 12 can be stored in the storage recess 4 while getting into the cab 2 by performing the reverse operation.

[Effects of the invention] As described above, the cab with a retractable ladder for boarding and egress according to this invention makes it difficult to open the door sufficiently when a truck equipped with this cab is parked, for example, on a narrow road. Even if the ladder is not installed, you can pull out the main body of the ladder from the storage recess to the side, extend the auxiliary ladder downward, and get on and off with your body almost perpendicular to the side wall of the cab. The ground clearance of the lower end can be lowered, and since this ladder is retractable, it has the effect of improving the appearance.

[Brief explanation of the drawing]

1 and 2 are a perspective view showing the front part of a large truck equipped with the cab of this invention, and a perspective view showing the main parts of the cab. In the figure, 1... side wall, 2... cab,
3...door, 4...storage recess, 5...opening, 6...
...Guide member, 7...Ladder main body, 7a, 10a...
...Vertical member, 7b, 10b...Step member, 7c...
... Notch, 7d, 8... Long hole, 9, 11... Pin, 10... Auxiliary ladder, 12... Ladder.

Claims (1)

[Scope of utility model registration request] A storage recess that is substantially orthogonal to the longitudinal direction of the vehicle and opens toward the outside is formed in a side wall near the open end of the door of the vehicle, and at least one pair of guide members is attached to the cab within this storage recess. A ladder main body is constituted by at least a pair of step members that are attached along the left and right direction of the guide members and that are removably fitted to these guide members, and a vertical member that is attached to the outer end of these step members. The auxiliary ladder, which is connected to the vertical member so as to be movable up and down, is composed of a vertical member that fits into a long hole formed in the vertical member, and a step member that is provided on the vertical member at appropriate intervals vertically. Cab with retractable boarding ladder.