JPH07304580A - Safety device for automatic opening-closing door - Google Patents

Abstract

PURPOSE:To call a user's attention to a warning with simple constitution by providing air blowing bodies which blow out air before a door is opened and call a user's attention to a danger, inside of a side frame. CONSTITUTION:When a landing car 8 descends from the upper floor and is going to arrive at the first floor, a first floor arrival detecting relay is excited, and when the landing car 8 arrives at a speed reducing position, a speed reduction commanding relay is excited, and air blowing bodies 12A and 12B arranged inside of a side frame 4 on the first floor are driven, and blow air. Thereby, a passenger waiting for arrival of the landing car 8 at a landing elevator hall 1 senses a danger since a wind is blown out of a clearance between a doorway frame and a landing door 5, and leaves from the door 5. Thereby, an accident that fingertips, fingers or the like are pulled in between the landing door 5 and the doorway frame when the landing door 5 is opened, can be prevented. When the elevator landing car 8 arrives at the first floor and a car door 9 and the landing door 5 are fully opened, the air blowing bodies 12A and 12B on the first floor stop.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a safety device for an automatic door.

[0002]

2. Description of the Related Art Generally, an entrance / exit device in which a door for closing an entrance / exit is automatically opened / closed by being pulled into a entrance / exit frame by a drive device is widely used for entrance / exit of general passenger elevators, trains, buses and other buildings. However, in such an entrance / exit device, a so-called automatic opening / closing door, there is a risk that a fingertip, a hand, or the like may be drawn between the door and the entrance / exit frame when the door is opened.Therefore, it is necessary to prevent such an accident. is there.

For this reason, in the prior art, for example, Japanese Patent Laid-Open No. 54-333.
As shown in Japanese Patent Laid-Open No. 45-45, a swingable detection band is projected from the side frame portion toward the inside of the doorway frame, and when the door is opened,
It has been proposed to stop the opening operation of the door when the detection zone detects a foreign matter.

[0004]

In the above-mentioned proposal, not only a large space is required between the door and the doorway frame for mounting the detection band, but also the detection band and the detection band are rocked. There is a problem in that a mechanism that supports it freely, a switch mechanism, and the like have a complicated structure and a large amount of cost is required.

An object of the present invention is to provide a safety device for an automatic opening / closing door which can call attention with a simple structure.

[0006]

The object of the present invention is to provide a safety device for an automatic opening / closing door, in which a door is arranged at the entrance and exit, and the door is automatically opened and closed inside a side frame of the entrance and exit frame by using a drive device. This is achieved by providing a blower inside the side frame to blow out air before the door opening operation to arouse danger.

[0007]

The blower provided inside the side frame ejects air before the door is opened, causing a danger. With this, the user can know that the gap is dangerous with a simple configuration in which the blower is attached.

Further, since the air blower is provided on the back side of the car call operation panel, the operation panel can be easily removed during maintenance of the air blower.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a plan view of the elevator, FIG. 2 is a front view of the elevator, and FIG. 3 is a circuit diagram of the blower.

In FIGS. 1 and 2, 1 is a hall, 2 is a building wall, 3 is an entrance / exit frame provided on the building wall 2, 4 is a side frame of the entrance / exit frame 3, and 5 is automatic opening / closing along a landing sill 6. A landing door, 7 is a landing call button provided on the building wall 2. Reference numeral 8 is an elevator car, 9 is a car door that automatically opens and closes along a car threshold 10, and 11 is a car call operation panel provided in the car 8. Reference numerals 12A and 12B denote blowers provided on the left and right inside the side frame 4 of the doorway frame 3.

In FIG. 3, Xa is a deceleration command relay X
(Not shown) normally open contact, Yb is door open detection relay Y
Normally-closed contacts (not shown) and Ha _{1 to} Hna are normally-open contacts of arrival floor detection relays H _{1 to} Hn (not shown) of the car 8. A _{1 to} An are blower drive relays, A _{1 a to} An
Reference character a denotes each normally open contact of the blower drive relays A _{1 to} An.

Next, the operation of this embodiment will be described. Now when the car 8 comes down from the upper floor and tries to reach the first floor,
The 1st-floor arrival-floor detection relay H ₁ is excited, and when the car reaches the deceleration position, the deceleration command relay X is excited and P-Xa-Yb
-H ₁ a-A ₁ -N and current flow and blower 12 on the first floor
A ₁ , 12B ₁ and drive relay A ₁ are excited, and P-A ₁ a
An electric current flows through -12A ₁ -N, P-A ₁ a-12B ₁ -N and the blowers 12A ₁ and 12B ₁ provided inside the side frame 4 on the first floor.
Drives and blows air. Therefore, a passenger (not shown) waiting for the arrival of the car 8 at the hall 1 detects the danger that the wind will blow out from the gap between the doorway frame 3 and the hall door 5, and leaves the door, It is possible to prevent an accident in which a fingertip, a fingertip, or the like is drawn between the landing door 5 and the doorway frame 3 when the door 5 is opened. When the elevator car 8 arrives on the first floor and the car door 9 and the landing door 5 are fully opened, the normally-closed contact Yb of the door open detection relay Y is opened, and the first-floor blower drive relay A ₁ is degaussed. The blowers 12A ₁ and 12B ₁ are stopped.

According to this embodiment, the blowers 12A, 12
Although B is provided in the doorway frame 3, it may be provided on the back side of the car call operation panel in the car 8, and the number of blowers may be increased or decreased as necessary.

In this embodiment, the automatic opening / closing door of the elevator has been described, but it may be applied to other automatic opening / closing doors.

[0016]

According to the present invention, there is an effect that the user can know that the gap portion is dangerous with a simple structure of attaching the blower.

Further, since the blower is provided on the back side of the car call operation panel, there is an effect that the operation panel can be easily removed during maintenance of the blower.

[Brief description of drawings]

FIG. 1 is a plan view of an elevator.

FIG. 2 is a front view of an elevator.

FIG. 3 is a circuit diagram of an air blower according to an embodiment of the present invention.

[Explanation of symbols]

1 Hall 3 Doorway Frame 5 Hall Door 8 Car 11 Car Call Control Panel 12A, 12B Blowers A _{1 a-} Ana Normally open contact of blower drive relay H _{1 a-} Hna Normally open contact of passenger arrival floor detection relay Xa Deceleration command relay normally open contact Yb Door open detection relay normally closed contact

Claims (3)

[Claims] 1. A safety device for an automatic opening / closing door, wherein a door is arranged at an entrance / exit, and the door is automatically opened / closed inside a side frame of an entrance / exit frame by using a drive device. A safety device for an automatic door that is equipped with a blower that blows out air before operation to create a danger. 2. The safety device for an automatic opening / closing door according to claim 1, wherein the operation of the blower is adapted to the deceleration operation of the car. 3. The safety device for an automatic opening / closing door according to claim 1, wherein the blower is provided on the back side of the car call operation panel.