Electric resin brush and production method thereof

A technology of brushes and resins, applied in the direction of resistance manufacturing, circuits, resistors, etc., can solve problems such as difficulties, large mutual influence, and low strength

Inactive Publication Date: 2015-06-17
石家庄衡泽新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the great mutual influence among the indicators, it is very difficult to meet the requirements of multiple indicators at the same time. For example, the smaller the resistance of the brush itself, the better, but the smaller the resistance, the lower the strength will be affected.

Method used

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Examples

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Embodiment Construction

[0022] Below by preferred embodiment the present invention is described in further detail:

[0023] At present, potentiometer products, especially potentiometers involving special equipment such as aerospace and weaponry, have very high requirements for brushes, and must meet the following multiple index requirements at the same time:

[0024] 1. The appearance size of the brush must meet the requirements of the drawings, and the main size tolerance is less than or equal to 5 wires;

[0025] 2. The resistance of the brush itself is ≤4Ω;

[0026] 3. The brush rotates 10,000 cycles on the potentiometer conductive rail, and its anti-wear coefficient ΔR≤-10---+5% (R is the total resistance);

[0027] 4. The compressive strength of the brush must be ≥ 133N and cannot be broken;

[0028] 5. When the brush adjusts the voltage signal on the conductive rail, there must be continuous jumps, and the smoothing coefficient ΔR≤4Ω;

[0029] 6. Collision, the brush is placed in the potenti...

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PUM

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Abstract

The invention relates to an electric resin brush and a production method thereof. The electric resin brush is made of 30-40 parts by weight of an organic insulation material phenolic resin as an adhesive, 5-20 parts by weight of an inorganic insulation material and 40-65 parts by weight of a conductive material, and the phenolic resin selects thermosetting and aniline linear macromolecular structure resin, and undergoes high temperature treatment to form a stereo netted structure. The invention also discloses the production method of the electric resin brush. Potentiometers' requirements on appearance dimension, the resistance, the anti-wear coefficient, the compressive strength, the smooth coefficient, the bump, the shock and other indexes of the electric brush can be simultaneously met by adjusting the kind, ratio and granularity size of the material of the electric brush, the dispersion uniformity in the processing process and technical schemes in the processing process, and the reliability of the electric resin brush is improved.

Description

technical field [0001] The invention relates to a brush and a preparation method thereof, in particular to a resin brush and a preparation method thereof. Background technique [0002] At present, potentiometer products, especially for aerospace and weaponry, have very strict technical requirements for special organic solid potentiometers and glass glaze potentiometers. The output voltage signal of the adjustment potentiometer must be very accurate and reliable. The brushes are closely related, so the requirements of the potentiometer for the brushes must meet the requirements of multiple indicators such as appearance size, resistance, anti-wear coefficient, compressive strength, smoothness coefficient, collision and vibration. Due to the great mutual influence among the indicators, it is very difficult to meet the requirements of multiple indicators at the same time. For example, the smaller the resistance of the brush itself, the better, but the smaller the resistance, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C1/14H01C17/00H01C10/00
Inventor 刘趁明
Owner 石家庄衡泽新材料科技有限公司
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