Direct-current motor armature commutator end portion preserved radial air duct structure and weftless tape binding process thereof

Abstract

The invention discloses a direct-current motor armature commutator end portion preserved radial air duct structure. When hooping is performed on an end portion of an armature commutator end, the end portion of the armature commutator end is wrapped with an insulating paper washer with a 10 mm space reserved as a mark; when weftless tape binding is performed, a space of a corresponding size is reserved at an armature commutator end coil lead so that the reserved space is not subjected to hooping, and therefore, an original armature commutator end coil lead which is attached to weftless tapes ina sealed manner with dead angles left can be transformed into a smooth radial air path structure, and the discharge of carbon powder is facilitated. With the weftless tape binding process of the invention adopted, the serious accidents of armature coil turn-to-turn short circuits caused by the accumulation of the carbon powder of a direct-current motor are effectively eliminated; the fault rate of the direct-current motor is greatly reduced; and the production efficiency of an enterprise is effectively improved.

Description

technical field [0001] The invention relates to a radial air channel structure reserved at the end of a DC motor armature commutator and a weft-free band binding process thereof, which are used in the motor field. Background technique [0002] At present, the end of the armature coil of the DC motor armature is generally bound by non-weft tape. The binding method is usually from the commutator riser to 20-30mm away from the armature core. This armature structure makes there is a dead angle at the lead wire of the armature commutator end coil, and the brush carbon powder generated during the operation of the motor is easy to enter. In this dead zone area, accumulated toner will accumulate more and more. Since there is bare copper in the armature coil lead wire and commutator vertical plate, when conductive dust such as carbon powder enters this dead zone, it cannot be removed, which will easily cause inter-turn short circuit, resulting in The commutator deteriorated and the ...

AI Technical Summary

Problems solved by technology

The binding method is usually from the commutator riser to 20-30mm away from the armature core. This armature structure makes there is a dead angle at the lead wire of the armature commutator end coil, and the brush carbon powder generated during the operation of the motor is easy to enter. In this dead zone area, accumulated toner will accumulate more and more. Since there is bare copper in the armature coil lead wire and commutator vertical plate, when conductive dust such as carbon powder enters this dead zone, it cannot be removed, which will easily cause inter-turn short circuit, resulting in The commutator deteriorates and the coil burns out

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