JP2528629Y2 - Elevator car door safety device - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a door in which a string-shaped foreign object hangs down, especially in a height direction region from a lower end of the safety device to an upper surface of the sill, which is a region where the safety device does not operate. The present invention relates to a safety device for an elevator car door suitable for preventing being caught between a front end and a front pillar.

[Conventional technology]

In a conventional apparatus, when a force in an opening direction is applied to a door that is moving in a closing direction, the force is received by a safety provided at a front end of the door, so that the door is inverted.

Incidentally, as a reference known example of this kind, for example, JP-A-55-3
No. 5757 or JP-A-61-33482.

[Problems to be solved by the invention]

In the above prior art, if a dog chain or a cleaner code is pinched at the end of the door where the safety function does not work, it cannot be detected, a door closing confirmation signal is issued, and the dog chain or the cleaner code is drawn. The car is running while it is still dangerous.

An object of the present invention is to provide a safety device for an elevator car door that can reliably detect a thin string-like foreign object caught in a non-detection area of a door safety and prevent the car from starting to run. Is to do.

[Means for solving the problem]

The object of the present invention is to provide a car door provided at the tip of the door and having a safety that reverses the door when a force in the opening direction is applied to the door moving in the closing direction, and the car door closing end when the door is closed. In a car door of an elevator provided with a front pillar that forms a string, a string-like foreign object is activated to turn over the door when a string-like foreign matter is caught in a height direction area from the lower end of the safety to the upper surface of the sill at the front end side of the door. This can be achieved by a safety device for an elevator car door as described in the claims for utility model registration, wherein a pressure-sensitive foreign substance detector is provided.

[Action]

Since the present invention adopts such a configuration, a string-like foreign object such as a dog leash or a cord of a cleaner is provided in a height direction area from a lower end of the safety mechanism to an upper surface of the sill, which is an area where the safety mechanism does not operate. Even if it hangs down and is caught between the front end of the door and the front pillar, the door can be inverted by operating the pressure-sensitive foreign matter detector. Since the pressure-sensitive foreign matter detector is provided not on the front pillar side but especially on the front end side of the door, when the string-like foreign substance hits the door during the closing operation and presses it, furthermore, the string-like foreign substance detector is further removed. It also activates when you notice that is about to be caught between the front end of the door and the front pillar, and pull it, you can flip the car door.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described with reference to FIG.

FIG. 1 is a front view of a main part of a car door, 1 is a car door, 2
A front pillar that forms a closed end with the car door 1, a safety device provided at the tip of the car door 1 so as to be able to advance and retreat, a safety device 4 provided below the safety system 3 and at a lower end of the door 1, and 5 a door The safety 3 on the tip side of 1
Safety device 4 which is provided in a height direction area from the lower end of the sill to the upper surface of the sill 6 described below and functions as a pressure-sensitive foreign matter detector
Is a threshold that guides the car door 1, and 8 is a door shoe that slides in the threshold 6 provided at the lower end of the car door 1.

Since the embodiment of the present invention has such a configuration, when the car door 1 is closed, the dog is located in the height direction area from the lower end of the safety 3 to the upper surface of the sill 6 where the safety 3 does not operate. String-like foreign objects such as chains of chains and cords of vacuum cleaners hang down, and the tip of the door and the front pillar 2
, The pressure sensor 5 of the safety device 4 is operated, and the car door 1 can be inverted through the device 4. Since the pressure-sensitive sensor 5 is provided not on the front pillar 2 side but particularly on the front end side of the door, when the string-like foreign substance hits the door during the closing operation and presses the same, the string-like foreign substance is further removed. When the user notices that the car is about to be caught between the front end of the door and the front pillar 2 and pulls it, the car door 1 can be turned over. As described above, the provision of the pressure-sensitive sensor 5 at the front end of the door makes it possible to reliably detect the string-like foreign matter, and completely prevents the danger seen in the prior art that the car travels while dragging the string-like foreign matter. it can.

As a switch for detecting that a foreign object has caught in the lower end of the car door 1, a tape switch may be used as shown in FIG.

[Effect of the invention]

As is apparent from the above description, according to the present invention, a string-like foreign object such as a dog leash or a cord of a cleaner is provided in a height direction area from a lower end of the safety mechanism to an upper surface of the sill, which is an area where the safety mechanism does not operate. Even if it hangs down and is caught between the front end of the door and the front pillar, the door can be turned over by operating the pressure-sensitive foreign matter detector. And since this pressure-sensitive foreign substance detector is provided not on the front column side but especially on the front end side of the door, when the string-like foreign substance hits the door during the closing operation and presses it, or when the string-like foreign substance is Conventional technology that the car runs while dragging because it operates even when you notice that it is about to be caught between the front end of the door and the front pillar and pulls it, and it can reliably detect string-like foreign matter The dangers seen in can be completely prevented.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of a car door showing one embodiment of the present invention, and FIG. 2 is a front view of a main part of a car door showing another embodiment of the present invention. 1 ... Cage door, 2 ... Front pillar, 3 ... Safety
4 Safety device, 5 Pressure sensor.

Claims (1)

(57) [Scope of request for utility model registration] 1. A car door provided at a tip of a door and provided with a safety that reverses the door when a force in an opening direction is applied to a door moving in a closing direction, and the car door closed end is formed when the door is closed. In a car door of an elevator having a front pillar, a pressure-sensitive foreign substance that operates when a string-like foreign substance is caught in a height direction region from the lower end of the safety at the front end side of the door to the upper surface of the sill, and turns over the door. An elevator car door safety device comprising a detector.