JP2871059B2 - elevator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to, for example, an elevator that moves up and down along a hoistway in a high-rise building. The present invention relates to an elevator that can be opened and closed.

(Prior art) The elevator doors of this kind that have already been proposed are:
It is configured as shown in FIG.

That is, in FIG. 7, in the hoistway of a high-rise building, a car 1 that moves up and down with a hanging rope of a hoist (not shown) is provided so as to stop at a landing on each floor. A guide rail 3 and a sill 4 are juxtaposed above and below a door pocket 2 erected at the entrance of the car 1, and each roller
A car-side opening / closing door 5 provided with 5a is provided so as to open and close the entrance in synchronization with a landing-side opening / closing door (not shown).

Further, at the opening end 5b of the car-side opening / closing door 5,
A vertically long safety shoe 6 is provided so as to be able to advance and retreat via a pair of upper and lower parallel links 7, and slightly protrudes from the opening end 5b to the entrance / exit side. A stopper 8 is threadably mounted on the car-side opening / closing door 5 so as to be in contact with the contact piece 7a of the lower parallel link 7.

Further, a safety switch (safety switch) 9 is provided near the stopper 8 so as to abut on the contact piece 7a.

Thereby, at the time of the closing stroke of the car side opening / closing door 5,
When an external force is applied to the front end 6a of the safety shoe 6, the safety shoe 6 rotates around each support shaft 10 and retreats to the side of the car-side door 5, so that the safety switch 9 is Operates ON apart from the contact piece 7a, and the car side door 5
Is immediately reversed and reopened.

(Problems to be Solved by the Invention) However, in the above-described elevator door safety device, during the closing process of the car-side door 5, the safety shoe 6 comes into contact with the passenger's body or luggage and is pushed. Only in this case, the safety switch 9 is turned on to open the car side door 5 again.

As a result, even if a passenger at the landing attempts to get into the car 1, this cannot be detected, and the passenger may be late. Further, since the safety switch 9 is operated via the safety shoe 6, the safety switch 9 may malfunction.

Therefore, the present invention has been made in view of the above-mentioned circumstances, and it is possible to operate safely and reliably for a long period of time without using a safety switch, without using a safety switch, and to use another safety device together. It is not necessary, and at the same time detecting the passenger trying to get into the car in a non-contact state, the closing door that is closing can be reopened and put on standby, and furthermore, passengers etc. can be It is an object of the present invention to provide an elevator that can open and close the opening / closing door and stand by even when the safety tissue is pushed.

[Configuration of the invention]

(Means for Solving the Problems) In order to solve the above-mentioned problems, an elevator according to the present invention comprises: a car-side opening / closing door for opening / closing an entrance / exit of a car; and a landing side in synchronization with the car-side opening / closing door. A landing-side opening / closing door for opening and closing the entrance / exit of the car; a safety tissue attached to the entrance / exit-side end of the car-side opening / closing door and protruding from the entrance / exit; and toward the entrance / exit on the landing side. A photoelectric sensor provided on the safety tissue, comprising: a light-emitting unit that irradiates detection light; and a light-receiving unit that receives reflected light that is reflected when the detection light hits a passenger approaching the landing on the landing side. The detection light reflecting means disposed on the landing-side opening / closing door, so that the detection light is reflected toward the light receiving portion when the vehicle is pushed and retreats to the side of the car-side opening / closing door, Riding The function of the photoelectric sensor is stopped when the open end of the car side opening / closing door is within a range of a position opened a predetermined distance from the fully closed position, and the light receiving unit of the photoelectric sensor receives the reflected light. Control means for operating the car-side opening / closing door and the hall-side opening / closing door in an opening direction.

(Operation) When the passenger at the landing approaches the entrance when the car-side door and the landing-side door are about to close,
Since the light receiving section of the photoelectric sensor provided on the safety shoe receives the detection light reflected on the passenger's body, the control means immediately reopens both of the doors.

Also, when the safety tissue hits the passenger's body or luggage, etc., and is pushed into the car-side opening / closing door, the detection light emitted by the light emitting unit of the photoelectric sensor provided in the safety tissue is sent to the landing-side opening / closing door. The light is reflected by the detection light reflecting means provided and received by the light receiving portion of the photoelectric sensor. Then, the control means immediately reopens both the opening and closing doors.

When the opening end of the car-side door is within a range of a predetermined distance from the fully-closed position, the control means stops the function of the photoelectric sensor, so that both doors can be securely closed. it can.

That is, since the elevator according to the present invention is a combination of the photoelectric sensor including the light emitting unit and the light receiving unit provided on the safety tissue and the detection light reflecting unit provided on the landing side opening / closing door, it is attempted to get into the car. A function that reliably detects the passenger approaching the entrance and reopens the door before the door touches the passenger's body, and immediately opens when the safety shoe comes in contact with the passenger and is pushed. With the function of reopening the door.

This eliminates the need to use another safety device, such as an ultrasonic sensor, for detecting a passenger trying to get into the car.

In addition, since a contactless mechanism is used, it can be operated safely and reliably for a long period of time.

Further, since the structure is simple, assembly adjustment and maintenance and inspection are easy.

(Example) Hereinafter, an elevator according to an embodiment of the present invention will be described.

In the present invention, the same parts as those in the above-described conventional example will be described with the same reference numerals.

1 to 4, reference numeral 1 denotes a car which is lifted and lowered by a hanging rope of a hoist (not shown) and stops at a landing on each floor, and a door pocket 2 is provided at the entrance of the car 1. It is erected. A guide rail 3 and a sill 4 are arranged above and below the door pocket 2, and a car-side door 5 provided with each roller 5a is provided so as to open and close in synchronization with a landing-side door 25. ing.

Further, at the open end 5b of the car-side opening / closing door 5,
A vertically long safety shoe 6 is provided so as to be able to advance and retreat via a pair of upper and lower parallel links 7, and slightly protrudes from the opening end 5b to the entrance / exit side. Further, a stopper 8 is threadably mounted on the car side opening / closing door 5 so as to abut on the contact piece 7a of the lower parallel link 7, and the projecting amount of the safety shoe 6 is determined.

On the other hand, in the middle of the front of the safety tissue 6, a vertically long translucent window 20 is formed so as to face the entrance on the landing side.
A light-emitting portion 21a for irradiating the detection light toward the landing on the landing side of the light transmissive window 20 of the safety tissue 6 and a light-emitting portion 21a of the passenger who approached the detection light to enter the car 1 There is provided a photoelectric sensor 21 having a light receiving unit 21b for receiving the light reflected by the body.
The detection distance of the photoelectric sensor 21 is preferably about 30 to 50 cm.

As a result, the detection light emitted from the light emitting unit 21a of the photoelectric sensor 21 is reflected on the passenger approaching the entrance to get into the car 1 and reflected therefrom.
When reaching b, the car-side door 5 and the landing-side door 25
The control means (not shown) for controlling the opening and closing operation of the opening and closing operation immediately reverses the two opening and closing doors 5 and 25 to open the doors again.

On the other hand, as shown in FIG. 3, a gate-shaped entrance frame 23 is provided at the landing 22 on each floor. A landing-side door 25 that opens and closes in synchronization with the car-side door 5 is provided in a door pocket 24 attached to the entrance frame 23 so as to be freely opened and closed. Further, a detection light reflecting means 26 such as a reflecting mirror is provided at an end on the entrance side on the back surface of the landing side opening / closing door 25, for example.

As a result, as shown in FIG. 4, when the safety shoe 6 comes into contact with the passenger when the car-side door 5 closes,
The safety shoe 6 retreats to the side of the car-side door 5. Then, the detection light emitted by the light emitting section 21a of the photoelectric sensor 21 is reflected by the detection light reflecting means 26, and reaches the light receiving section 21b of the photoelectric sensor 21. Then, the control means immediately reverses the two open / close doors 5 and 25 to restart the doors.

Note that the opening end of the car-side opening / closing door 5 is approximately
The control means stops the function of the photoelectric sensor 21 when the position is within the range of about 5 cm from the open position, so that both the open / close doors 5 and 25 can be reliably closed.

In another embodiment of the present invention shown in FIG. 5, a blindfold plate 27 having a reflection surface 27a is provided at the rear end of the landing side opening / closing door 25 in order to hide it from the eyes of passengers in the car 1. And
This has the same configuration as the specific example described above.

Another embodiment of the present invention shown in FIG. 6 is applied to a pair of left and right car-side doors 5 and a pair of left and right landing-side doors 25, and has the same configuration as the specific example described above. What to do.

〔The invention's effect〕

As is clear from the above description, the elevator of the present invention has the following advantages. (I) Since the photoelectric sensor is provided in the safety shoe closest to the body of the passenger to be boarded among the parts of the car, The passenger approaching the entrance can be reliably detected, and the door can be reopened before the door contacts the passenger's body.

(Ii) Since the detection light reflecting means for reflecting the detection light in place of the passenger is provided on the car-side opening / closing door, a photoelectric sensor for detecting a passenger approaching the entrance to get into the car is provided by a safety tissue. Can be shared for the function of reopening the opening / closing door when it is pushed in contact with the passenger, and there is no need to use another safety device together.

(Iii) Since the contactless mechanism is used, the operation can be performed safely and reliably for a long period of time.

(Iv) The structure is simple, and assembly adjustment and maintenance and inspection are easy.

It has an excellent effect.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of a car in an elevator of the present invention, FIG. 2 is an enlarged cross-sectional view taken along a chain line AA in FIG. 1, and FIG. 3 is an elevator of the present invention. FIG. 4 is a view for explaining the operation of the present invention, FIG. 5 and FIG. 6 are drawings showing other embodiments of the present invention, and FIG. It is a front view which shows the principal part of the car in the elevator already proposed. 1 ... car 5: car side door 6 ... safety shoes 7 ... parallel link 20 ... translucent window 21 ...
Photoelectric sensor, 21a: light-emitting unit, 21b: light-receiving unit, 25: landing side opening / closing door, 26: detection light reflecting means.

Claims (1)

(57) [Claims] 1. A car-side opening / closing door for opening / closing a car entrance / exit, a car-side opening / closing door for opening / closing a car-side entrance / exit in synchronization with the car-side opening / closing door, and the car-side opening / closing door. A safety tissue that is attached to the end of the entrance side of the entrance so as to be able to advance and retreat and protrudes to the entrance, a light emitting unit that irradiates detection light toward the entrance on the landing side, and A photoelectric sensor provided on the safety tissue, having a light receiving portion for receiving reflected light reflected on a passenger approaching the mouth, and when the safety tissue is pushed and retreats to the side of the car-side door. Detecting light reflecting means disposed on the landing-side opening / closing door so that the detection light is reflected toward the light-receiving section; and an opening end of the car-side opening / closing door opened a predetermined distance from the fully closed position. Within range of position Control means for stopping the function of the photoelectric sensor at the same time, and operating the car-side door and the landing-side door in the opening direction when the light receiving unit of the photoelectric sensor receives the reflected light, An elevator, comprising: