JPH058310Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a safety device for electric doors used in elevators and the like.

[Conventional technology]

As described in Japanese Patent Application Laid-Open No. 60-6580, the conventional electric elevator door safety device is equipped with an actuating piece on the door that can operate in the opening/closing direction of the door and in the front-back direction perpendicular to this direction. The movement of the actuating piece due to an external force is detected by each detector, and when either one of the detectors detects the movement, the door is reversely driven. When both detectors performed detection, the signals were led to the connection terminals on the top of the car through separate wiring.

[Problem that the invention attempts to solve]

Conventional electric door safety devices had the above-mentioned configuration, so the wires from each detector to the connection terminal on the top of the car passed through areas where there were movable parts, where they rubbed against each other. There is a danger that the wire may break, or the wire may be pushed out by the other wire and get entangled with the connecting rod that connects the door motor and the door, causing the wire to break, making it impossible to open or close the door, and causing the elevator to fail. There was a problem that caused the system to stop operating.

An object of the present invention is to provide a safety device for an electric door that prevents disconnection in the wiring for transmitting signals from a detector and improves reliability.

[Means for solving problems]

In order to achieve the above object, the electric door safety device according to the present invention connects one end of the wire to both detectors, and connects the other end of the wire to a connection terminal provided on the door.
A feature is that there is only one wire after this connection terminal.

[Effect]

According to the electric door safety device configured as described above,
There is only one wire located in the area where the movable parts are present, and there is no longer a risk of rubbing against each other and breaking the wire, or being pushed out by the other wire and getting tangled with the connecting rod, resulting in increased reliability. can improve sex.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

The drawing is a front view of the safety device, in which an operating piece 2 movable in the opening/closing direction of the door 1 is attached to a lever 5, which has one end connected to an upper seat 3 and a lower seat 4 fixed to the door 1. Therefore, if a human body or luggage touches the actuating piece 2 during the opening operation of the door 1, the upper seat 3 and the lower seat 4
The lever 5 rotates counterclockwise using the fulcrum as a fulcrum, and the actuating piece 2 retreats. At this time, the operation of the lower lever 5 is detected by the detector 6, and when detected by the detector 6, a signal is sent to the control circuit of the motor (not shown) via the wirings 7 and 12, and the motor is reversed. to reverse the operation of door 1. The wiring 7 on the control circuit side of the electric motor is connected to the connection terminal 11 attached to the door 1.
is connected to the wiring 12 via this connection terminal 11.
is connected to.

In addition, the actuating piece 2 has a front and back direction perpendicular to the opening/closing direction.
In other words, when an external force is applied in the direction of entry or exit of a person or baggage and a response is applied, this movement is detected by the detector 9. This detector 9 is provided between the connecting body 8 connected to the lever 5 and the actuating piece 2. Further, a return device 10 is provided between the connecting body 8 and the actuating piece 2, for returning the actuating piece 2 to a normal state when the external force applied to the actuating piece 2 is removed. Wiring 13 is connected to the detector 9.
One end of the wiring 13 is connected, and the other end of the wiring 13 is connected to the connecting terminal 1.
It is connected to wiring 7 via 1. Therefore, when an external force is applied to the actuating piece 2 in the longitudinal direction during the closing operation of the door 1, this operation is detected by the detector 9,
A signal is transmitted to the control circuit via the wiring 13, the connection terminal 11, and the wiring 7, and based on this, the electric motor is reversed to open the door 1.

A link device including a connecting rod 14 that connects the electric motor and the door 1 is located in the part leading from the connection terminal 11 to the control circuit, but the wiring 7 arranged in this part is
Since there is only one link, it can be easily arranged without being affected by the link device.

[Effect of idea]

As explained above, the safety device according to the present invention is
One end of the wire was connected to the detector, and the other end was connected to a single wire using a connection terminal provided on the door.
There is now only one wire from the connection terminal 11 to the control circuit, and unlike conventional wires, wire breaks may occur due to rubbing against each other, or wires pushed out by the other wire may become entangled with movable members such as connecting rods. can be prevented and reliability can be improved.

[Brief explanation of the drawing]

The figure is a front view showing the main parts of a safety device for an electric door according to an embodiment of the present invention. 1... Door, 2... Actuation piece, 6... Detector, 7...
... Wiring, 9 ... Detector, 11 ... Connection terminal, 1
2,13...Wiring.

Claims (1)

[Scope of utility model registration request] A door that is opened and closed by an electric motor has an actuating piece that can move in the opening/closing direction of the door and a front-back direction perpendicular to this, and a detector that detects the movement of the actuating piece in the opening/closing direction and the back-and-forth direction, respectively. , a safety device for an electric door comprising wiring for transmitting an operation detection signal from the detector to a control circuit of the electric motor, wherein a connection terminal is provided on the door, and one wiring is connected between the control circuit and the connection terminal. A safety device for an electric door, characterized in that the connecting terminal and both of the detectors are connected by different wirings.