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Brake having noise elimination function

A technology of brakes and brake pads, applied in the direction of the hoisting device, etc., can solve the problems of the armature moving distance becoming longer, the brake switch not functioning normally, and the collision sound becoming louder, etc.

Inactive Publication Date: 2014-11-26
TOSHIBA ELEVATOR KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if the gap between the brake pad and the roller is reduced in order to reduce the operation sound, the brake switch may not function normally.
[0005] If the gap between the brake pad and the roller is widened for better responsiveness and more accurate detection of the state of the brake switch, the moving distance of the armature becomes longer, and when the armature is magnetically fixed by the electromagnet after the brake is released. The crash sound may become louder

Method used

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  • Brake having noise elimination function
  • Brake having noise elimination function
  • Brake having noise elimination function

Examples

Experimental program
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Embodiment Construction

[0015] Hereinafter, embodiments will be described in detail with reference to the drawings.

[0016] figure 1 It is the schematic diagram which looked at the hoisting machine 1 of the elevator of embodiment from the axial direction. The hoisting machine 1 is fixedly installed in a hoistway (not shown) via a cross-shaped motor casing 2 . And the hoisting machine 1 winds up the rope 4 connected to the cage|basket (not shown) arrange|positioned so that it can move up and down in a hoistway.

[0017] This hoisting machine 1 is provided with two brakes 10 and 10 which act on the drum 5 to be described later which is fixed to the rotating shaft. The two brakes 10 are located at the center of the rotation axis of the hoist 1. figure 1 are arranged in a symmetrical position. Each brake 10 is fixed to the motor case 2 using a plurality of screws 8 . In addition, since these two brakes 10 have substantially the same structure, here, only the brake 10 on the right side in the figure...

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Abstract

The invention relates to a brake having noise elimination function and the execution mode of the invention relates to the brake of an elevator winch. The brake allows the brake switch to have more accurate detecting precision with low motion noise and have noise elimination function. The brake comprises an armature able to leave or contact with the rotary cylinder, a spring which exerts force upon the rotary cylinder from armature direction, thus to press the brake sheets upon the rotary cylinder, an electromagnet which overcomes the application of force of the spring, attracts the armature to the direction off the rotary cylinder, and magnetically fixes the armature, and a noise elimination member which reduces the collision noise resulting from the magnetic fixation of the armature and reduces the noises when the brake sheet contacts with the rotary cylinder.

Description

[0001] This application is based on Japanese Patent Application No. 2010-168530 (filed on July 27, 2010), and enjoys the priority of this application. This application includes the entire contents of this earlier application by reference. technical field [0002] Embodiments of the present invention relate to, for example, a brake of an elevator hoist. Background technique [0003] For example, as a brake of an elevator hoisting machine, there is a type of drum brake that presses a brake pad by contacting or separating an armature from a rotating drum. From the viewpoint of safety, it is preferable to increase the response speed or reduce the operation noise of the elevator brake. [0004] However, if the gap between the brake pad and the drum is reduced in order to reduce the operation noise, the brake switch may not function normally. [0005] If the gap between the brake pads and the drum is enlarged in order to detect the state of the brake switch more accurately with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D5/08B66D5/30
Inventor 小川哲
Owner TOSHIBA ELEVATOR KK
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