JPH0431174Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an entrance step for a cabover vehicle, and particularly to a step structure that facilitates easy entry and exit.

[Prior Art] In large-sized cab-over trucks, etc., a step is provided at the entrance to make it easier to get into the cab. Usually, such a step extends from the body panel directly below the entrance. It is formed by concave inward.

However, with the above-mentioned steps, when getting on and off the vehicle, only one's toes are placed on the step, so it is necessary to apply force to the upper body and firmly grasp the assist grip on the side of the body to get on and off, making it difficult to get on and off the vehicle quickly.

Therefore, as shown in Fig. 3, an auxiliary step 1 is provided that rotates outward from the body surface directly below the door D to a horizontal position, or as shown in Fig. 4, one end is fixed to the inner surface of the door D. It has been proposed that a fan-shaped auxiliary step 1 is provided and pulled out to the outside of the vehicle when the door is opened.

[Problems to be solved by the invention] By the way, with any of the above structures, the auxiliary step must be provided in the front half of the entrance/exit door due to the presence of the front wheel house. It was still difficult to get on and off the train. Furthermore, the former requires a drive mechanism to move the auxiliary step forward and backward as the door opens and closes, while the latter requires a strengthened door support structure and the auxiliary step because the load is applied to the door when getting on and off. The storage structure will also become more complicated.

The present invention solves these problems, and allows smooth boarding and exit even when the opening angle of the door is small.Moreover, it does not require a drive mechanism for the auxiliary step or a complicated storage structure, and it does not require door support. An object of the present invention is to provide an entrance step for a cab-over vehicle that does not require reinforcement of the rigidity of the part.

[Means for Solving the Problems] The configuration of the present invention will be explained with reference to FIG. The parallel links 2A and 2B are provided with plate-shaped auxiliary steps 1 on the tips of the parallel links 2A and 2B.
and the above-mentioned parallel links 2 and
A connecting link 3 is provided to connect the links 2A of A and 2B closer to the door D, and the auxiliary step 1 is stored on the step S when the door D is opened to the front outside of the vehicle. It is designed so that it can be advanced to a use position at the rear outside the vehicle.

[Function] When the door D is closed, the parallel links 2A and 2B face toward the front of the vehicle, and the auxiliary step 1 supported by the parallel links 2A and 2B is located and housed above the door step S. (Figure 2 chain line).

When the door D is released, the parallel links 2A and 2B are pulled out by the connecting link 3 as the door is released, and the auxiliary step 1 advances to the rear outside the vehicle in the opposite direction to the door. (Figure 2 solid line).

[Effects] According to the present invention, since the auxiliary step is advanced to the rear outside the vehicle, smooth boarding and alighting is possible even when the opening angle of the boarding door is small.

The storage structure is simple because the auxiliary step is stored above the doorway step, and the auxiliary step is connected to the door via a connecting link and moves forward according to the opening degree of the door, so it does not interfere with obstacles. , Its drive structure is also simple.

Furthermore, since the load of the auxiliary step is borne by the parallel links, no excessive load is applied to the door, and there is no need to strengthen the door support structure.

[Example] In Fig. 1, a step S is formed by recessing the green body panel in front of the front wheel house H inwardly, and a step S is formed directly below the cab entrance B of a cab-over vehicle. It is hinged to the front edge of B and is released toward the front of the vehicle as shown.

A bracket 4 is provided at the rear end of the step S, and parallel links 2A and 2B are provided at the base ends of the bracket 4 with pins. The parallel links 2A and 2B have a symmetrical slightly curved arc shape and can be freely pulled out from above the step S to the outside of the vehicle as shown. An auxiliary step 1 is connected and supported at the tip of the parallel links 2A and 2B by pin connection.

The above auxiliary step 1 has a non-slip protrusion 1 on the top surface.
1, and has a slightly smaller shape along the step 1 described above.

One end of a connecting link 3 which forms an arc inward of the vehicle is connected with a pin to an intermediate position of the link 2A constituting the parallel link, and the other end of the connecting link 3 is connected to a bracket 31 provided on the inner surface of the passenger door D. Connected with pins.

In the entrance step S of the above structure, when the entrance door D is closed, the connecting links 2A and 2B are on the step S facing the front of the vehicle, and the auxiliary step 1 is on the step S facing the rear of the vehicle, as shown by the chain line in FIG. It is stored in S.

When the passenger door D is opened toward the front of the vehicle, the parallel links 2A and 2B are rotated about their base ends and pulled out via the connecting link 3. Accordingly, the auxiliary step 1 is kept facing rearward and advanced to the rear outside the vehicle, reaching near the front wheel house H (solid line in Figure 2).

In this way, the auxiliary step pulled out near the front wheel house reliably supports the occupant's body when getting on and off the cab, and the occupant can smoothly get on and off the cab by lightly grasping the assist grip positioned directly above the auxiliary step that extends rearward.

In the above structure, since the auxiliary step is advanced toward the rear of the vehicle, smooth boarding and alighting is possible even when the opening angle of the boarding door is small.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an entrance step of a cab-over vehicle, FIG. 2 is a schematic plan view of the entrance step, and FIGS. 3 and 4 are front perspective views of a conventional cab-over vehicle. 1... Auxiliary step, 2A, 2B... Parallel link, 3... Connecting link, B... Entrance/exit, D... Entrance/exit door, S... Step.

Claims (1)

[Scope of utility model registration request] The base end of the parallel link is supported at the rear end of the step provided at the cab entry/exit so that it can be rotated horizontally out of the vehicle, and a plate-shaped auxiliary step is supported on the tip of the parallel link. A connecting link is provided that connects the door that opens and closes by being hinged to the front edge of the door and the intermediate position of the link on the side closer to the door of the parallel link. An entrance step for a cab-over vehicle, wherein the auxiliary step is moved from a storage position on the step to a use position at the rear of the vehicle when the step is released.