Carbon brush wear sensor device of motor

A technology of sensing devices and motors, applied in the direction of circuits, current collectors, electrical components, etc., can solve problems such as blocking the optical path, alarm failure, hole blockage, etc.

Inactive Publication Date: 2007-11-21
POSITEC POWER TOOLS (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the hole is easily blocked by dust and blocks the light path, causing the alarm to fail

Method used

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  • Carbon brush wear sensor device of motor
  • Carbon brush wear sensor device of motor
  • Carbon brush wear sensor device of motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1 is that the surface of the carbon brush 4 is provided with a groove 6, the groove 6 extends along the sliding direction of the carbon brush 4, the conductive probe 5 is inserted in the groove 6, the The contact portion of the carbon brush 4 described above is the groove wall at the end of the groove 6 . The side of the end of the conductive probe 5 facing away from the moving direction of the carbon brush 4 is the probe arc surface 8. When the carbon brush 4 is in the second working state, the probe arc surface 8 and the carbon brush 4 are in the second working state. The contact parts of the carbon brushes 4 are in contact. The groove wall at the end of the groove 6 is a groove side arc surface 9 . Referring to FIG. 5 , there is a distance between the rear end of the groove 6 and the rear end of the carbon brush 4 , that is, there is still a distance between the end of the groove 6 and the rear end of the carbon brush 4 . When the end side of the carbon ...

Embodiment 2

[0018] Embodiment 2 Referring to FIG. 8 , the contact part of the carbon brush 4 is a metal conductive bump 10 whose root is embedded in the carbon brush 4 and whose outer end protrudes from the surface of the carbon brush 4 .

Embodiment 3

[0019] Embodiment 3 Referring to FIG. 9 , the contact portion of the carbon brush 4 is a raised carbon brush bump 12 provided on the surface of the carbon brush.

[0020] The sides of the outer ends of the conductive bump 10 of the second embodiment and the carbon brush bump 12 of the third embodiment facing the moving direction of the carbon brush 4 are also arc-shaped surfaces, which have the same function as the groove-side arc-shaped surface 9 .

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PUM

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Abstract

A sensor for sensing the carbon brush wear-out of motor is composed of a casing, a carbon brush with a contact position on its surface, an elastic element, and a circuit board with electric conducting probe and alarm lamp, which are electrically connected. When the carbon brush is needed to change, the alarm lamp is turned on by contacting with carbon brush via said probe.

Description

technical field [0001] The invention relates to a carbon brush on a motor. Background technique [0002] In the prior art, the carbon brush on the commutator of the motor includes a housing, a carbon brush slidably arranged in the inner cavity of the housing, at least one warning indicator light, and one end of the carbon brush There is an elastic element on the top, and the other end of the carbon brush is in contact with the circumferential surface of the commutator. The carbon brush has been pushed against the commutator under the action of the elastic element. In order to monitor the wear degree of the carbon brush so as to replace the carbon brush in time, a metal wire is embedded in the carbon brush. When the carbon brush is worn and slides to the set position , the metal wire is exposed to make the alarm indicator light on, and this technical scheme makes the manufacturing process of the carbon brush embedding the metal wire more complicated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R39/58
CPCH01R39/58
Inventor 王永峰
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD
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