JPH0537857U - Safety device for opening / closing doors for elevators - Google Patents

Abstract

(57) [Summary] [Structure] Opening / closing doors 3 and 4 arranged at the entrance and exit of the elevator car, and a pressure sensor 9 attached to the front end of the opening / closing door in the closing direction to detect contact with a person or object. And a motor 14 for driving the opening / closing door to open / close through an opening / closing mechanism, and a controller 13 for controlling the opening / closing drive of the motor. When the contact is made, the contact is sensed by the pressure sensor 9, and the controller 13 causes the opening / closing doors 3 and 4 which are being closed to be opened halfway. [Effect] When the pressure sensor 9 is pressed even a little, this pressure can be detected, and the open / close doors 3, 4 being closed are closed.
Is not immediately opened and pressed against the passenger, and does not cause any discomfort to the passenger.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an elevator opening / closing door safety device that opens an opening / closing door of an elevator for safety when it comes into contact with a person or an object during the closing operation of the elevator.

[0002]

[Prior Art]

 The opening and closing doors of conventional elevators are doubled at the entrance and exit of the car and the entrance to the building.The opening and closing doors at the entrance and exit of the car include passengers who are getting on and off while the opening and closing doors are closed. An opening / closing safety device is provided to prevent accidental slipping in. As such an elevator opening / closing safety device, devices shown in FIGS. 5 and 6 are known. In the figure, reference numerals 101 and 102 denote opening / closing doors that are openably and closably arranged at the entrance / exit of the car. The opening / closing doors 101 and 102 are provided for passengers getting in and out of the car or at the entrance / exit of the car. Open and close by pressing the button. A safety shoe 103 is rotatably attached to the opening / closing door 101 via a link 104, and the safety shoe 103 is urged to the side end of the opening / closing door 101 by a spring 105. A micro switch 106 is provided near the shoe 103.

When a passenger is about to be caught by the opening / closing doors 101 and 102 that are in the closing operation while getting on and off, and the opening / closing door 101 comes into contact with the passenger's body, the safety shoe 103 is pushed and biased by the spring 105. Rotate against. When the rotation of the safety shoe 103 is detected by the micro switch 106, this signal is output to the controller. The motor 107 is driven by the drive current from the controller, and the opening / closing doors 101 and 102 are operated to be opened from the closing operation through the opening / closing mechanism to prevent passengers from being caught in the opening / closing doors 101 and 102. ..

[0004]

However, in such a conventional elevator opening / closing door opening / closing safety device for an elevator, when the opening / closing doors 101 and 102 touch a passenger during the closing operation, an opening operation is performed from the middle. To do so, it was necessary to press the safety shoe 103 and rotate it until it touched the microswitch 106. Therefore, until the safety shoe 103 comes into contact with the micro switch 106, the passengers are pressed by the opening and closing doors 101 and 102, which causes a problem of discomfort.

An object of the present invention is to provide an elevator opening / closing door opening / closing safety device that opens when the passenger touches a passenger while the opening / closing door is closing.

[0006]

[Means for Solving the Problems]

 In order to achieve such an object, according to the present invention, an opening / closing door arranged at the entrance / exit of a car of an elevator and a contact with a person or an object attached to the end of the opening / closing door in the closing direction are detected. Equipped with a pressure-sensitive sensor, a motor that drives the opening / closing door to open / close through an opening / closing mechanism, and a controller that controls the opening / closing drive of this motor. When the contact is made with the touch sensor, the contact is detected by the pressure-sensitive sensor, and the opening / closing door which is being closed is opened by the controller.

[0007]

[Action]

 When a passenger is getting on or off the car and is likely to be caught by the opening / closing door that is closing, a pressure sensor is attached to the front end of the opening / closing door in the closing direction. Will be relatively pressed by. If the pressure sensor is pressed even a little, the pressure sensor detects the pressing and outputs a signal to the controller. When the controller sends a drive current whose phase is changed based on the signal to the motor, the motor reverses from the middle and the opening / closing door is opened from the middle.

[0008]

【Example】

 Hereinafter, the present invention will be described with reference to the drawings. 1 to 4 are views showing an embodiment of an opening / closing safety device for an elevator opening / closing door according to the present invention.

In FIG. 1 and FIG. 2, reference numeral 1 is an elevator car provided on the support frame 2, and opening / closing doors 3 and 4 are arranged at the entrance and exit of the car 1. As shown in FIG. 3, the open / close doors 3 and 4 have inner wall plates 3a and 4a and outer wall plates 3b and 4b, respectively. The inner wall plates 3a and 4a and the outer wall plates 3b and 4b are provided near the tips in the closing direction. The C-shaped steel 5 is welded, and further, the C-shaped steel 5 has rounded corners, and the tip members 7 and 8 having the storage recesses 7a and 8a are fixed by bolts and nuts. ..

A pressure-sensitive sensor 9 (a so-called cord switch made by Bridgestone Co., Ltd., or else a belt switch or the like) may be adhered to the housing recesses 7a and 8a of the tip members 7 and 8, respectively. A protective rubber 15 is adhered on the sensor 9. As shown in FIG. 4, the pressure-sensitive sensor 9 is formed by weaving a pressure conductive rubber 10 mixed in silicon rubber and tin-plated ultrafine bundled steel wires arranged on both sides of the pressure conductive rubber 10. The flat braided wires 11a and 11b and the high-voltage silicone rubber 12 that covers them. When the pressure conductive rubber 10 is pressed even a little, only the pressed portion is energized. The conduction state at this time is grasped as a change in voltage, which is output as a signal to the controller 13, and a drive current having a changed phase is supplied from the controller 13 to the motor 14 which drives the opening / closing doors 3 and 4 to open / close.

As shown in FIGS. 1 and 2, the open / close doors 3 and 4 are slidably supported by guide rails 15 which are horizontally provided above the support frame 2 via rollers (not shown). .. A pair of links 16a, 16b, 17a, 17b are attached to the open / close doors 3, 4, and the links 16a, 16b, 17a, 17b are rotatably provided on the upper part of the support frame 2. 18 are mounted symmetrically. The rotating member 18 is connected to the motor 14 provided on the upper portion of the support frame 2 via a reduction mechanism. When the motor 14 is driven by supplying a drive current, the rotating member 18 is rotated, and the open / close doors 3 and 4 are opened / closed via the links 16a, 16b, 17a, 17b. A weight 19 is attached to the rotating member 18 so as to assist the opening / closing doors 3 and 4 in the opening direction or the closing direction.

When a passenger is getting on and off the car 1 and is about to be caught by the closing doors 3 and 4 in the closing operation, a pressure sensor 9 is attached to the front end side of the closing doors 3 and 4 in the closing direction. Therefore, the pressure sensor 9 is relatively pressed by the passenger's body through the protective rubber 15. If the pressure sensor 9 is pressed even a little, this pressure is sensed and a signal is output to the controller 13. When the controller 13 sends a drive current whose phase is changed based on the signal to the motor 14, the motor 14 reverses from the middle and opens the opening and closing doors 3 and 4 from the middle.

As described above, the detection sensor 9 is attached to the front end side of the opening / closing doors 3 and 4 in the closing direction. When the detection sensor 9 is pressed even a little, this pressing can be detected. That is, when the pressure sensor 9 is pressed, the opening / closing doors 3 and 4 which are being closed are not immediately opened to press the passenger, and the passenger is not made uncomfortable. .. Further, since the cord-shaped pressure sensor 9 is attached to the tip ends of the opening / closing doors 3 and 4 in the closing direction, it is not necessary to rotate the safety shoe via the link as in the conventional case, and this opening / closing safety device is provided. It can be made compact.

[0014]

[Effect of the device]

 As described above, according to the present invention, when the front end of the open / close door in the closing direction comes into contact with a person or an object during the closing operation, the contact is sensed by the pressure sensor, and the closing operation is performed by the controller. Since the opening / closing door is operated to open from the middle, even if the pressure sensor is pressed even a little, this pressing can be detected, and the opening / closing door during closing operation is immediately opened to press the passenger. This will no longer occur and will not make this passenger uncomfortable.

[Brief description of drawings]

FIG. 1 is a front view of an opening / closing door using a safety device for an elevator opening / closing door according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a sectional view taken along line AA in FIG.

FIG. 4 is a perspective view of a pressure sensor.

FIG. 5 is a front view of an opening / closing door using a conventional elevator opening / closing door safety device.

FIG. 6 is a plan view of the same.

[Explanation of symbols]

3, 4 ... Open / close door, 9 ... Pressure sensor, 13 ... Controller, 14 ... Motor.

Claims (1)

[Scope of utility model registration request] 1. An opening / closing door arranged at an entrance / exit of a car of an elevator, a pressure sensor attached to a front end of the opening / closing door in a closing direction to detect contact with a person or an object, and an opening / closing mechanism for the opening / closing door. A motor for opening and closing through the motor, and a controller for controlling the opening and closing drive of this motor, and when the closing direction end of the opening and closing door comes into contact with a person or an object during the closing operation,
An opening / closing safety device for an opening / closing door for an elevator, characterized in that this contact is detected by the pressure sensor, and the opening / closing door which is being closed is opened by the controller.