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Motor brush for small household appliances and manufacturing method thereof

A manufacturing method and technology for small electrical appliances, applied in the manufacture of brushes, current collectors, rotary current collectors, etc., can solve the problem of product instability affecting the wear resistance and other properties of brushes, poor performance of brushes, and hidden dangers of environmental protection, etc. problems, to achieve the effect of simple manufacturing process, good commutation performance and reduced wear resistance

Inactive Publication Date: 2011-12-14
SUZHOU DONON CARBON PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The binder resin is only heat-cured at a temperature of about 200°C, and it is impossible to crack into inorganic carbon, and it still exists in an organic structure, which has environmental protection hazards;
[0005] (2) The use performance of the brush is poor, and the stability is not good, especially the wear resistance. The use of resin binders requires very high temperature control when curing in the oven. The instability of the produced products affects the electric brush. Brush wear and other properties

Method used

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  • Motor brush for small household appliances and manufacturing method thereof
  • Motor brush for small household appliances and manufacturing method thereof
  • Motor brush for small household appliances and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A motor brush for small household electrical appliances, the composition ratio of raw materials in parts by weight is:

[0027]

[0028] The manufacture method of above-mentioned electric motor electric brush for small household appliances, it comprises the following steps:

[0029] 1. Add natural crystal graphite, artificial graphite, carbon black, tungsten disulfide, and refined table salt into the container according to the above formula, and mix for 70 minutes while heating.

[0030] 2. When the temperature of the above materials reaches 120±10°C, add the formulated amount of medium-temperature asphalt, continue to heat to 190±10°C and knead evenly.

[0031] 3. Freely cool and granulate the uniformly kneaded pasty material during the kneading process. When the temperature of the material is ≤100°C, unload it from the container and allow it to cool freely to room temperature.

[0032] 4. Grind the above-mentioned cooled granular material into powder, pass through...

Embodiment 2

[0035] A motor brush for small household electrical appliances, the composition ratio of raw materials in parts by weight is:

[0036]

[0037] The manufacture method of above-mentioned electric motor electric brush for small household appliances, it comprises the following steps:

[0038] 1. Add natural crystal graphite, artificial graphite, carbon black, tungsten disulfide, and refined table salt into the container according to the above formula, and mix for 60 minutes while heating.

[0039] 2. When the temperature of the above materials reaches 120±10°C, add the formulated amount of medium-temperature asphalt, continue to heat to 190±10°C and knead evenly.

[0040] 3. Freely cool and granulate the uniformly kneaded pasty material during the kneading process. When the temperature of the material is ≤100°C, unload it from the container and allow it to cool freely to room temperature.

[0041] 4. Grind the above-mentioned cooled granular material into powder, pass through...

Embodiment 3

[0044] A motor brush for small household electrical appliances, the composition ratio of raw materials in parts by weight is:

[0045]

[0046]

[0047] The manufacture method of above-mentioned electric motor electric brush for small household appliances, it comprises the following steps:

[0048] 1. Add natural crystal graphite, artificial graphite, carbon black, tungsten disulfide, and refined table salt into the container according to the above formula, and mix for 70 minutes while heating.

[0049] 2. When the temperature of the above materials reaches 120±10°C, add the formulated amount of medium-temperature asphalt, continue to heat to 190±10°C and knead evenly.

[0050] 3. Freely cool and granulate the uniformly kneaded pasty material during the kneading process. When the temperature of the material is ≤100°C, unload it from the container and allow it to cool freely to room temperature.

[0051] 4. Grind the above-mentioned cooled granular material into powder, ...

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Abstract

The invention discloses a motor brush for small household appliances and a preparation method thereof. The brush uses natural crystal graphite, artificial graphite, copper powder and carbon black as the main material of the brush, and is equipped with lubricants, additives, adhesives, etc. The agent is made by mixing, molding and roasting. The invention is suitable for small household electrical appliances such as soybean milk machines, juicers, shavers, hair dryers, and small irons. The motor brush for small household electrical appliances of the present invention adopts special raw materials and proportions, and has the advantages of low resistivity, good commutation performance, low running noise, excellent wear resistance, long service life, and environmental protection. Its manufacturing process is simple, Easy to implement, stable product performance and high yield.

Description

technical field [0001] The invention relates to a motor brush for small household appliances and a manufacturing method thereof. Background technique [0002] Due to its small size and high speed, the series-excited DC motor for small household appliances requires the brush to have the advantages of good commutation performance, low operating noise, excellent wear resistance, long service life, and environmental protection. Due to the harsh commutation requirements of the motor, the resistivity of the brush is required to be low. [0003] In the prior art, carbon and graphite powder are generally used as the base material, and resin is used as the bonding material to manufacture such brushes through kneading, grinding, molding and curing at a temperature of about 200°C. This manufacturing process The produced brushes will have the following disadvantages: [0004] (1) The binder resin is only heat-cured at a temperature of about 200°C, and it is impossible to crack into in...

Claims

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Application Information

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IPC IPC(8): H01R39/20H01R39/22H01R43/12
Inventor 吴爱民
Owner SUZHOU DONON CARBON PRODS
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