JPH0258199B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an escalator for elevating and descending that has been modified to allow use by a wheelchair, and particularly to an escalator for elevating and descending that has an improved safety switch circuit.

[Technical background of the invention and its problems]

In recent years, with the development of transportation systems, railway station platforms are being installed higher or lower than the ground, and as a result, some stations are installing escalators for elevating and descending passengers. is increasing. However, it is extremely difficult for wheelchair users to use escalators, and wheelchair elevators are often impossible to install due to the structure of station buildings and the like. For this reason, an increasing number of escalators are now being modified to allow wheelchair users to use them.

However, this type of escalator has the following problems. That is, the safety device for stopping the drive of the escalator body remains the same as before, and this safety device includes a switch that can be easily pressed by a third party (ordinary person).
Therefore, if the safety switch is activated due to an external factor (such as mischief by a third party) while the wheelchair user is operating the escalator, there is a risk that the wheelchair user and his/her attendant may fall on the escalator stairs.

[Purpose of the invention]

The purpose of the present invention is to prevent the escalator from stopping even if the safety switch, which is activated by an external factor when operating a wheelchair, is pressed by a third party or the like.
To provide an escalator for going up and down that can improve the safety of wheelchair users and their attendants.

[Summary of the invention]

The gist of the present invention is to prevent a safety switch that may be activated due to external factors such as mischief by a third party from being activated when a wheelchair is operated on an escalator.

That is, the present invention provides a lifting escalator that is equipped with a changeover switch that switches between normal operation and wheelchair operation, and that enables wheelchair use. At least a portion of the switch circuit is disconnected, and the disconnected safety switch circuit is prevented from operating when the changeover switch is on the wheelchair operating side, so that the switch that is activated due to external factors such as mischief by a third party while operating the wheelchair is not pressed. This prevents the escalator from stopping even if the escalator is stopped.

〔Effect of the invention〕

According to the present invention, even if a specific safety switch (a safety switch that can be easily pressed by a third party) is pressed due to an external factor such as a third party's mischief while operating a wheelchair, the escalator main body is prevented from stopping. can be prevented. Therefore, the danger of the wheelchair user and his/her attendant falling due to mischief by a third party can be eliminated, and safety can be improved.

[Embodiments of the invention]

The figure is a block diagram showing the configuration of a switch section of an escalator for elevating and lowering according to an embodiment of the present invention.

Power bus (RC-SC) to which control power is connected
A first switch circuit 1, a second switch circuit 2, a changeover switch (HNDS) 3, a normal operation operation circuit 4, a wheelchair operation operation circuit 5, and a wheelchair operation command relay 6 are connected in series between them. There is.
That is, between the bus RC and the changeover switch 3,
The first and second switch circuits 1 and 2 are connected in series, and a normal operation operation circuit 4 is connected between the contact S ₁ (normal operation side) of the changeover switch 3 and the bus SC. S ₂ (wheelchair driver side)
A wheelchair driving operation circuit 5 and a wheelchair driving command relay (HND) 6 are connected in parallel between and the bus SC.

Here, the first switch circuit 1 is comprised of switches that can be easily pressed by a third party among the safety switches normally provided on escalators, such as an inlet switch, a skirt guard switch, an emergency stop switch, etc. A contact (HDS) 7 of the wheelchair driving command relay 6 is connected in parallel to this switch circuit 1. The second switch circuit 2 connects all of the safety switches to the first switch circuit 2.
It consists of safety switches other than those included in the switch circuit 1. Further, the changeover switch 3 is provided on the external operation panel, and is normally set to the contact _S1 side. The contact 7 of the relay 6 is in normal operation, that is, the changeover switch 3 is the contact.
It is located on the _S1 side and is opened when relay 6 is not energized.

With this configuration, during normal driving, all of the safety switches are operable as before, but when driving in a wheelchair, the first switch circuit 1
stops working. That is, when operating the wheelchair, the changeover switch 3 is switched to the contact _S2 side, and at this time the relay 6 is energized and its contact 7 is closed, thereby jumpering the first switch circuit 1. In this state, even if a switch included in the first switch circuit 1, such as an inlet switch, skirt guard switch, or emergency stop switch, is pressed due to an external factor such as a third party's mischief, the escalator main body does not stop. Therefore, the escalator does not stop due to mischief by a third party when operating a wheelchair, and it is possible to prevent the wheelchair user or his/her attendant from falling on the stairs.
Safety can be improved. Another advantage is that it can be easily realized by separating some of the switches activated by external factors from other switches without significantly changing the conventional safety device.

Note that the present invention is not limited to the embodiments described above. For example, the switch included in the first switch circuit is not limited to an inlet switch, a skirt guard switch, or an emergency stop switch, and is a switch that can be easily pressed by a third party when operating a wheelchair. and items that pose a danger to wheelchair users and their attendants. In addition, the circuit configuration is not limited to the above-mentioned diagram.
Any configuration that can jumper the switch circuit is sufficient. In addition, without departing from the gist of the present invention,
Various modifications can be made.

[Brief explanation of drawings]

The figure is a block diagram showing the configuration of a switch section of an escalator for elevating and lowering according to an embodiment of the present invention. 1... First switch circuit, 2... Second switch circuit, 3... Changeover switch (HNDS), 4... Normal driving operation circuit, 5... Wheelchair driving operation circuit, 6... Wheelchair driving command relay (HND), 7... Relay contact (HDS).

Claims (1)

[Scope of Claims] 1. In a lifting escalator that is equipped with a changeover switch that switches between normal operation and wheelchair operation, and which allows wheelchair use, the escalator is activated by external factors from various safety switch circuits that stop the drive of the escalator body. At least one of the safety switch circuits unnecessary for the operation of the wheelchair is disconnected, and when the changeover switch is on the wheelchair operation side, the disconnected safety switch circuit is not activated and the escalator is operated. An escalator for elevating and descending, characterized by a continuous movement of the main body. 2. The lifting escalator according to claim 1, wherein the disconnected switch circuit is jumpered by a contact of a relay that is energized when the changeover switch is on the wheelchair driving side. 3. The escalator for elevating and lowering according to claim 1 or 2, wherein the disconnected switch circuit comprises an inlet switch, a skirt guard switch, and an emergency stop switch.