Structure characteristics of split type brush

SHANGHAI WANNAN ELECTRIC MOTOR CO.,LTD|2015-09-06 09:13|6439 view

The structural characteristics of the split type brush are as follows:

1 brush body is divided into two pieces, thus improving the brush to inhibit the ability of sparks. Because when the end of the reversing element of the moment, the commutation circuit in the part of the electromagnetic energy to be released, when this part of the energy is large enough, it will produce a change in the spark. And the size of the IK of the additional commutation current depends on the resistance of the reversing loop to a certain extent, and the addition of the reverse current IK is reduced, and the commutation of the motor is improved.

2. The brush body is divided into two lobes, because each disc brush can relatively independent action, with good dynamic performance, the valve jump at the same time, from the surface of the commutator with fewer opportunities, so as to improve the sliding contact of brush.

3 when the motor is running at high speed, the high frequency of the brush in the brush holder will produce high frequency, which will increase the speed of the brush to loose, fall off and increase the mechanical spark. The structure of a layer of silicone rubber pad on the top of the brush can greatly reduce the vibration of the brush, improve the mechanical impact strength of the brush, reduce the phenomenon of the brush valve loose and fall off. The change of brush pressure is also small.

4. In the silicon rubber pressure pad is stuck with a layer of silicone glass cloth laminated sheet can prevent silicon rubber pressure pad in pressure refers to the effect for a long time and hardening or broken, the shock absorption effect is weakened. At the same time, it makes the pressure between the brush and the brush body, can be avoided when the brush or loose when the flap, the current through the brush box and spring, so that it from damage.

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