A DC motor carbon brush whose service life can be checked
A technology of DC motors and carbon brushes, applied to circuits, current collectors, electrical components, etc., can solve the problems of time-consuming inspection and inaccurate measurement, and achieve the effect of prolonging online use time and easy and convenient inspection
Active Publication Date: 2017-12-01
NANJING IRON & STEEL CO LTD
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- Description
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- Application Information
AI Technical Summary
Problems solved by technology
Due to the lack of intuitive methods and objective data in the daily inspection, it is impossible to talk about accurate measurement, so the inspection is time-consuming, and the carbon brushes that are replaced daily do not use the cut-off line
There has always been a large waste
Method used
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Embodiment Construction
[0022] The accompanying drawings disclose non-restrictive schematic flow diagrams of preferred embodiments involved in the present invention; the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0023] In order to overcome the existing problems, the purpose of this patent is to convert the originally invisible carbon brush height equivalent to the visible side of the carbon brush by adding a life line on the side of the carbon brush. Through equivalent conversion, the remaining height of the carbon brush is displayed on the side through the life line, which is convenient for observation and measurement.
[0024] This practical patent is realized through the following technical solutions:
[0025] pass figure 2 We can see that the carbon brush life indicator line is determined according to the following rules:
[0026] 1. Take the midpoint of the carbon brush cut-off line (4) as the apex of the tr...
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The invention relates to a direct-current motor carbon brush with the service life capable of being checked. The direct-current motor carbon brush comprises a brush body of the cuboid structure and wires connected to the top of the brush body. A carbon brush cut-off line which is parallel to the side edge of the bottom face of the brush body is etched on the side face of the brush body, and the carbon brush is divided into a carbon brush wire embedded part and a carbon brush use part through the carbon brush cut-off line. A right triangle used for indicating the service life of the carbon brush is pre-etched on the side face of the carbon brush use part, the first right-angle edge of the right triangle is perpendicular to the carbon brush cut-off line, and the second right-angle edge of the right triangle is parallel to the carbon brush cut-off line. The length of the first right-angle edge is not larger than the length of the carbon brush use part, and is M (M is a positive integer) times of the length of the second right-angle edge or 1 / M of the length of the second right-angle edge.
Description
technical field [0001] The invention relates to a DC motor carbon brush, specifically a DC motor carbon brush whose service life can be checked, and belongs to the technical field of motor equipment. Background technique [0002] When the brushed DC motor is working, the carbon brush always rubs against the commutation ring, and spark erosion will occur at the moment of commutation, so the carbon brush is a consumable part in the DC motor. Existing carbon brushes can only estimate the service length of the carbon brush by visually observing the degree of depression of the tail spring during use. If you need to know it accurately, you need to take the carbon brush out of the brush holder to see it. Moreover, the brush holders are distributed symmetrically in the motor, especially the carbon brushes at the top and bottom are difficult to observe the compression spring due to the small space inside the motor, and it is also difficult to take out the carbon brushes, making quick...
Claims
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IPC IPC(8): H01R39/26H01R43/12G01B5/02
Inventor 陈雷鸣宋效慧林剑波豆胡荣
Owner NANJING IRON & STEEL CO LTD