JPS61238687A - Safety device for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an elevator safety device, and more particularly to a safety device that prevents an unexpected accident such as a worker being accidentally caught in the lower part of an elevator or the lower part of a counterweight during inspection and maintenance work in an elevator hoistway.

[Conventional technology]

Conventionally, during maintenance and inspection work on elevators, there has been a risk that the elevator may operate due to some kind of accident and hit the bottom of the car or the bottom of the counterweight, causing an accident to the worker.
Therefore, various considerations have been made to prevent such dangers. Japanese Utility Model Application Publication No. 513-43870 relates to such a conventional elevator safety device, which is equipped with a detection device that detects when a human body protrudes from the elevator, and immediately issues an alarm.

[Problems to be solved by the invention]

However, although conventional elevator safety devices can detect the working range and position of workers, they do not have a structure that can reliably protect the worker's body when the elevator actually moves due to an unexpected situation. was not equipped. This invention solves the above-mentioned drawbacks, and provides an elevator that protects the worker from injury even if the elevator car moves due to an unexpected accident and collides with the worker's body, and at the same time activates the elevator stop circuit. It provides a safety device.

[Means to solve the problem]

According to this invention, a net body or a shock absorbing body having the same effect as the net body is placed under the elevator or the counterweight, leaving a space, and when the shock body moves due to collision with an operator, the detection switch is activated. , the elevator is stopped immediately.

[For use]

Therefore, according to this invention, even if the elevator car or counterweight accidentally moves and comes into contact with a worker during maintenance and inspection, the worker is protected by the cushioning body such as a net, and the worker is protected by the buffer. A detection switch that detects body contact accidents is activated and the elevator can be stopped.

[Embodiments of the invention]

An embodiment of the invention of B will be described below. Figure 1 shows a case in which this device is installed on the external bottom of an elevator cab. 1 is a frame column that holds both sides of the elevator cab 2 and is installed upright; A lower beam of the car room, 4 a floor, 5 a guide shoe, and 6 a detection switch.A net body 8 is provided on the outside of the bottom of the car room 2 with a slight gap left, and the net body 8 is It is suspended horizontally by a frame having the same shape as the car room 2. Also, the net 1 piece 8 is attached to the net hanging frame 7 attached to the lower beam 3 of the elevator car room by the screw 1 and the hanging hand 8a by its own weight. Furthermore, the detection switch 6 is suspended from the car compartment 2.
It is attached to the end of the lower beam 3, and its detection portion 6a is in contact with the net body 8. Therefore, when the elevator car moves due to an accident and comes into contact with a part of the worker's body, it will be buffered and protected by the net stretched below, and the net will be pushed up toward the car room due to the contact. The activation of the detection switch 6 activates the elevator stop circuit. [Effects of the Invention] As described above, according to the present invention, a buffer body such as a net body is disposed below the elevator car or the counterweight with a space therebetween, and a switch for operating the elevator stop circuit is further provided between the two. This provides a useful elevator safety device that protects workers while also stopping elevator operation.

[Brief explanation of drawings]

The figure shows one embodiment of the present invention, and FIG. 1 is a perspective view of a net body provided on the external bottom surface of an elevator car. FIG. 2 is also a sectional view of the main part. FIG. 3 is a perspective view showing only the net body. 2. Elevator car room, 3. Lower beam, 4. Car floor,
6...detection switch, 8...net body Note that the same reference numerals in the drawings indicate the same or equivalent parts. Agent Masuo Oiwa (and 2 others) Figure 1 5. ;It”f L”) You

Claims (1)

[Claims] An elevator characterized in that a net body is stretched across the external bottom surface of an elevator car that moves up and down along a hoistway with a gap therebetween, and a detection switch for stopping the elevator is provided between the car cabin and the net body. Safety device.