JPH0330197Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to an automatic pull-out step for a vehicle, which is provided below the entrance/exit of a bus or the like.

(Prior Art) Generally, in vehicles such as buses, stair-type steps are fixedly installed below the entrance/exit. On the contrary,
In order to make it easier for elderly people, children, and wheelchair users to get on and off, devices have been devised in which a ramp is provided that can be moved in and out. (For example, Kimiaki Sane
(Refer to Publication No. 56-1474) Now, regarding the staircase type step, the necessity of an automatic pull-out type will be explained here.

As shown in FIG. 6, a vehicle 1 such as a bus is provided with a middle entrance 3 or a rear entrance 4 in addition to a front entrance 2 on the side of the driver's seat. If the floor section 5 is of a so-called raised floor type, the lower edge of the middle entrance/exit 3 or the rear entrance/exit 4 will be high, so a tall step (with a large number of steps) will be required.

Regarding this, in specially equipped vehicles such as blood collection vehicles, medical examination vehicles, etc., it is desirable to have a one-way system in which passengers enter through one entrance and exit through the other entrance. However, due to the nature of the car,
Since many devices are mounted under the floor, the vehicle is built on a high floor. For example, vehicle equipment 7 such as a fuel tank, engine generator, water container, and storage space are installed under the floor of the middle entrance 3, and under the floor of the rear entrance 4. , battery, muffler 8, etc. will be installed.

Therefore, at the front entrance 2, as shown in FIG. 3 and rear door 4 door 14
As shown in FIG. 8, it is necessary to provide an automatic pull-out type step 15 below the step 15 so as to be able to extend and retract from the outside of the vehicle.

(Purpose of the invention) This invention is intended to provide an automatic pull-out step for a vehicle that meets the above-mentioned need.

(Structure of the invention) This invention stores a slider whose end is the upper part of the step below the floor of the vehicle entrance and exit, and a threaded hole in a nut protruding from the slider in the direction of movement of the slider. A screw shaft is provided in parallel with the step and rotated by the drive of a motor, and the step frame is screwed into engagement with the step frame so as to be able to protrude and retract toward the outside of the vehicle.A step frame is attached to the upper part of the step and tilts to touch the ground when pulled out to the outside of the vehicle. A step portion consisting of a supported step plate is attached in a retractable manner.

(Example) The details of this invention will be described below with reference to the examples shown in FIGS. 1 to 5.

FIG. 1 shows the step 15 (details will be described later) in a retracted state, and FIG. 2 shows the step 15 pulled out to the outside of the vehicle. This step 15 is stored below the floor 5 of the entrance and exit and above the vehicle equipment 7 such as the fuel tank and storage compartment, and freely opens and closes the cover plate 17 provided below the door 14 of the entrance and exit. Allow storage and withdrawal to be performed automatically.

3 to 5 show the mechanism of the step 15, in which the frame 21 is positioned below the floor 5 and above the vehicle equipment 7 shown in FIGS. form. A slider 22 is movably inserted into this frame 21. A step upper part 23 is integrally formed at the outer end of the slider 22.

In order to support the slider 22, a roller 25 that rolls in contact with the upper wall 21a of the frame 21 is rotatably mounted inside the inner end (end on the inside of the vehicle body) 22a of the slider 22 at the front and back of the vehicle body. At the same time, a roller 27 is rotatably supported 28, which is positioned on the outside of the vehicle body corresponding to each roller 25 and rolls in contact with the lower wall 21b of the frame 21.

3 shows a state in which the slider 22 is pulled out to the outside of the vehicle, and FIG. 4 shows a state in which the slider 22 is retracted.
1b as the frame plane. In addition, roller 25
and 27 are arranged as described above, so the third
When the upper step part 23 is pulled out as shown in the figure, it is maintained in a horizontal state and does not sag.

To draw out or store the slider 22,
A bracket 31 is provided to protrude from the slider 22, and a nut portion 32 is fixedly provided thereto. In addition, a screw shaft 38 is provided between the brackets 34 and 35 along the frame 21 in parallel to the moving direction of the slider 22, and is rotated about its axis by the drive of a motor 37.
The screw shaft 38 is screwed into the screw hole No. 2 and engaged.
(See Figure 5) That is, when the motor 37 is driven to rotate the screw shaft 38, the nut portion 32 moves in the E direction (vehicle width direction).
Accordingly, the slider 22 also moves in the same direction and enters the drawn-out state or the retracted state.

Further, as shown in FIGS. 2 and 3, a step portion 41 is attached to the upper step portion 23. As shown in FIGS. The step part 41 includes an upper step frame 43 that is pivoted at the tip of the upper step part 23, and a base of the upper step part 23 (a place continuous with the slider 22).
A lower step frame 46 is pivoted at 45, and several step plates 49 are spanned between the upper step frame 43 and the lower step frame 46 and are each pivoted at 48.
It is made up of. Further, a fulcrum roller 51 is rotatably supported 52 at the lower part of the open end of the frame 21.

Since the fulcrum roller 51 always receives the lower edge of the lower step frame 46 and rolls against it, when the slider 22 is placed in the retracted state,
As the upper step part 23 moves, the lower step frame 46 is restrained by the fulcrum roller 51, rotates about the pivot point 45, and finally folds up along the upper step part 23. The upper step frame 43 and the step plate 49 are also folded in conjunction with this, and both are integrated along the upper step portion 23 and stored within the frame 21.

Conversely, when the slider 22 is moved to the drawn out state (used state), the upper step part 23 is pulled out to a horizontal state, and the lower step frame 46 is pulled out.
rotates downward while contacting the fulcrum roller 51,
Eventually, it will touch the ground at an angle. In conjunction with this, the upper step frame 43 is also formed to be inclined, and the several step plates 49 interposed therebetween are formed and maintained in a horizontal state.

In this manner, the step portion 41 is automatically pulled out via the slider 22 by driving the motor 37, and the step plate 49 and the upper step portion 23, which are formed in a horizontal state, allow the rider to get on and off the vehicle without any trouble. In order to move the slider 22 and place it in the retracted state or the drawn-out state, limit switches are provided at key points and are operated in conjunction with the motor 37.

(Effects of the invention) The steps of conventional drawer structures are mostly manual and labor-intensive, so there was a tendency to avoid putting in and taking out drawers, but this invention has a relatively simple structure as described above. Moreover, since loading and unloading is performed automatically just by operating a motor switch, it has the advantage of being of extremely high practical value.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of this invention, with Figure 1 being an explanatory diagram of the retracted state, Figure 2 being an explanatory diagram of the drawn out state, and Figure 3 showing the main parts of the slider and step section in the pulled out state. An explanatory diagram, Fig. 4 is an explanatory diagram of the main part of the slider in the stored state, and Fig. 5 is A of Fig. 3 and Fig. 4.
-A cross-sectional view taken along line A; Figure 6 is an explanatory diagram of a high-floor vehicle;
7 is an explanatory diagram of the normal step provided in FIG. 6, and FIG. 8 is an explanatory diagram of the pull-out type step provided in FIG. 6. 1... Vehicle, 2, 3, 4... Entrance/exit, 5... Floor, 2
DESCRIPTION OF SYMBOLS 1... Frame, 22... Slider, 23... Step upper part, 25, 27... Roller, 32... Nut part,
37...Motor, 38...Screw shaft, 41...Step part, 46...Lower step frame, 49...Step plate,
51...Fulcrum roller.

Claims (1)

[Scope of utility model registration request] A slider whose end is the upper part of the step is stored below the floor of the vehicle entrance and exit, and a screw hole in a nut protruding from the slider is provided parallel to the direction of movement of the slider and is driven by a motor. A rotating screw shaft is screwed into the step so that the step can protrude and retract toward the outside of the vehicle, and the upper step portion includes a step frame that tilts and touches the ground when pulled out to the outside of the vehicle, and a step plate pivotally supported by the step frame. An automatic drawer step for a vehicle, characterized in that it is attached in a retractable manner.