JPS6025846A - Folding type step device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a folding step device particularly suitable for use in railway vehicles.

BACKGROUND ART Conventionally, in railway vehicles, except for streetcars, passengers have been boarded and alighted on elevated platforms installed therein. However, especially on local railways, the population density and frequency of use are low, causing various operational problems. Therefore, it is necessary to eliminate all platform equipment so that passengers can get on and off anywhere, in order to secure passengers and improve service. is desired.

The overall object of the present invention is to obtain a foldable step device f that allows passengers to get on and off without a high platform.

According to the present invention, when the step is extended, it occupies a pass-through position and allows getting on and off the vehicle, but when it is not needed, it is folded up and placed in a compact state where it does not get in the way. Note that the principle of the present invention can be used not only for railway vehicles but also for Noh vehicles and step devices for things other than vehicles.

Next, an embodiment of the present invention will be explained with reference to the drawings.
In the figure, 1 indicates the body of the railway vehicle, and 2 indicates the entire bogie. The stand 2 constitutes the entire supporting part of the step device of the present invention. The trolley 2 has a placket 3 on its side, which has a first
A lateral fixed pivot shaft 4 is supported, and the base end of the first step 5 is rotatably supported by this pivot shaft 4.

On the other hand, a second lateral fixed axis 6 is supported below the first fixed axis 4 and at a position away from the first fixed axis 4 with respect to the truck 2 serving as a support section. The base end of the step 7 is rotatably supported.

In the illustrated state, both the first and second steps 5 and 7 are in a horizontal position where they function as steps, and the middle of the tip of the first step 5 and the second step 7 is Bin 5a by vertical interlocking link 8.

7a't-.

The truck 2 as a support part is provided with a bracket 10 on which a third lateral fixed pivot 11 is supported. This pivot 11 is above the first fixed pivot 4.

A first operation link 12 is attached to the third fixed pivot 11.
One end is pivotally connected, and a second
One end of the operating link 14 is pivotally connected, and the bent end is connected to the bin 1.
5 is pivotally mounted in the middle of the second step 7. 1st
and the second operating link constitute an operating link mechanism.

In the state shown in FIG. 1, both operating links 12 of the operating link mechanism.
14 is fully extended and the second step 7 is lower than the horizontal position? Further, the first step 5 is supported by the second step 7 via the interlocking link 8, and is similarly prevented from lowering from the horizontal position. Therefore, in this state, both steps 5.7 can be used to get on and off the vehicle.

so as to rotate integrally with the first operation link 12,
An arm 17 is supported around the pivot shaft 11, and its tip is pivotally connected to the tip of a drive rod 20 of a drive source 19 via a pin 18. The drive source 19 is an air cylinder in the illustrated row, but any drive source in the pond can be used. The drive source 19 is provided away from the position of the truck 2.

To fold the step device from the operating condition shown in Figure 1, the second
As shown in the figure, the drive source 19 is extended and the arm 17 is rotated counterclockwise in the same figure.

As a result, the first operating link 12 forming -Kk rotates in the same direction around the pivot 11, so the operating link mechanism bends, and the second step 7 is pulled clockwise around the pivot 6 and rotates. move. The rotation of the second step 70 causes the first step 5 to rotate in the same direction around its pivot 4 via the interlocking link 8.

When the drive source 19iδ and others are extended, the operation link mechanism 12
．． U is further bent, and the second step 7 is also further rotated, rising to a vertical position as shown in FIG. On the other hand, the first step 5 similarly rises to a vertical state via the interlocking link 8, and both steps 5 and 7 are folded under the vehicle 1 and stored along the truck 2. Along with this, link mechanism 1
2. i4, the interlocking link 8 is located inside the outermost second step 7 and does not protrude outward. Then,
All components fit within the reduction limits shown in FIG.

In order to bring the stair device stored as shown in FIG. 3 into use, it is sufficient to retract the drive device 19 in the opposite manner to that described above.

As described above, the step device of the present invention reliably forms a staircase shape when extended, and can be folded into a compact state that follows the side of the supporting finger, so it is especially suitable for getting on and off in places where there is no platform. It is suitable for being applied to railway vehicles in order to make it possible, and is useful in that it can be installed while observing the vehicle limits of railway vehicles. Note that, as stated at the beginning, the present invention can be applied to other than vehicles.

[Brief explanation of the drawing]

Fig. 1 is a side view of the foldable step device of the present invention in its used state, Fig. 2 is a side view showing the device in the middle of folding, and Fig. 3 is a side view showing the device in its folded state. It is. 2... Support part, 4... First lateral fixing axis, 5...
...first step, 6...second lateral fixed axis, 7.
...Second step, 8...Interlocking link, 11...Third step
lateral fixed axis, 12...first operating link, 14
...Second operation link, 17...Arm, 19...
・Drive source. Applicant's agent Kiyoshi Inomata

Claims (1)

[Scope of Claims] 1) A first step whose proximal end is fully rotatably supported by a first lateral fixed pivot on the support, and a first step below the first fixed pivot with respect to the support. a second step whose proximal end is rotatably supported relative to the support portion by a second lateral fixed pivot located apart from the first fixed pivot; and about the second fixed pivot of the second step. an interlocking link that interconnects the first and second steps such that the first step rotates about the first fixed pivot in conjunction with the rotation of the first step; a first operating link having one end supported on the support by a third lateral fixed pivot; and one end pivotally connected to a curved end of the first operating link, and the curved end pivotally connected to the second step. It is composed of an operating link mechanism consisting of a second operating link, and a drive mechanism that rotates the first operating link around an eighth fixed axis. The second step is configured to assume a horizontal position, and the interlocking link is configured to cause the first step to assume a horizontal position when the second step assumes a horizontal position. Foldable step device. 2) The drive mechanism is comprised of an arm fixed to one end of the first operating link and a drive source that rotates this arm by a third fixed pivot shaft. foldable step device. 8) The folding type according to claim 1 or 2, wherein one end of the interlocking link is pivotally connected to the tip side of the first step, and the curved end is pivotally connected to the middle of the second step. Step device.