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Limit switch action mechanism and speed controller

A limit switch and action mechanism technology, applied in the direction of electric switches, elevators, contact operating parts, etc., to achieve the effect of improving reliability, reliable action, and simple structure

Active Publication Date: 2011-05-11
TOSHIBA ELEVATOR KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the limit switch used as the switch for stopping the car is a switch that can only be operated when the car is stopped in an emergency, and does not operate during daily operation.

Method used

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  • Limit switch action mechanism and speed controller
  • Limit switch action mechanism and speed controller
  • Limit switch action mechanism and speed controller

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0029] 1 to 4 , a limit switch operating mechanism 1 according to a first embodiment of the present invention and a governor 10 of an elevator 100 using the same will be described. As shown in Figure 1, the elevator 100 has: a guide rail (guide rail) 103 laid vertically in the hoistway 102, a car 104 guided by the guide rail 103, a governor 10, and a main rope (main rope) ) 106, hoist, counterweight, and emergency braking device 107. The car 104 is suspended in the hoistway 102 with one end of the main cable 106 fixed to the upper portion. The main rope 106 is wound around a drive sheave of a hoist disposed above the hoistway, and a counterweight is suspended from the other end in a bucket-like manner.

[0030] The speed governor 10 and the emergency brake device 107 are safety devices for preventing the car 104 from running at a speed higher than a set speed and for making the car 104 stop safely. The governor 10 and the emergency brake device 107 are connected by a link me...

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PUM

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Abstract

The invention provides a limit switch actuating mechanism (1) which has a base (2), an operating arm (3), a cam (4) and a limit switch (5). The operating arm (3) can be rotatablely supported on the base (2) through a shaft. The cam (4) is integrated with the operating arm (3) and has the external peripheral surface provided with a depressed part (42) which is formed through the centripetal movement of a part having concentric circles towards a rotation center (40) in a manner relative to the operating arm (3). The limit switch (5) has an actuating unit (6) and is fixed on the base (2). The actuating unit (6) is contacted with the outer peripheral surface of the cam (4) under a force exerted by the rotation center (40) and moves towards the radius direction opposite to the cam (4) along the outer peripheral surface of the cam (4), together with the rotation of the cam (4).

Description

technical field [0001] The present invention relates to a limit switch operative mechanism (limit switch operative mechanism), which is installed as a safety device of an elevator and forcibly turns off the power supply when the car (cage) moves beyond a set speed, and a limit switch equipped with the limit switch. The governor of the action mechanism. Background technique [0002] The speed governor which is a safety device of an elevator has a limit switch (limit switch). The limit switch is connected in the middle of the power supply path of the hoist. When the moving speed of the elevator car in the hoistway exceeds the set speed, the speed governor activates the limit switch to cut off the power supply path to the hoist. [0003] The elevator governor described in Japanese Patent Laid-Open No. 2001-106454 includes: a governor rope, a sheave, a flyweight, a balance spring, a car A switch for cage stop, and a switch lever. The sheaves are respectively arranged at the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/02H01H3/16H01H13/18B66B5/04
Inventor 高井和彦松泽结希
Owner TOSHIBA ELEVATOR KK