Guide socket fixing structure of phase-to-phase insulation paper for stator of direct-wound motor

Abstract

The invention discloses a guide socket fixing structure of phase-to-phase insulation paper for a stator of a direct-wound motor, belongs to the motor technical field. Stator grooves are formed betweenadjacent stator teeth of the stator core, the end of each stator tooth; the ends of each insulation tooth have two stator tooth arm portions, two insulation tooth arm parts; between adjacent stator tooth arm parts and between adjacent insulation tooth arm parts there are corresponding first notch and second notch respectively, and the adjacent insulation tooth arm parts near the outer wall vertical surface of the second notch are respectively provided with coil limiting ribs to guide the slots, and both of them are offset from the inner hole of the stator core center; The interphase insulation paper has one facade, two folding surfaces and two unfolding surfaces; The interphase insulating paper is inserted into the guide slot with its elevation to close the first slot, and the two unfolded surfaces are accommodated in each stator slot and the end edge of the unfolded surface is in contact with the slot bottom of the stator slot. The invention can ensure that the gap of the guide socket of the phase-to-phase insulation paper is sufficient to seal the first slot and the insulation of the stator windings of the adjacent phases.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a guide socket fixing structure for interphase insulating paper used in a direct-wound motor stator. Background technique [0002] The stator includes a stator core and a stator winding (coil winding), etc. The stator core includes a ring-shaped yoke and a number of teeth protruding inward from the yoke. Stator slots are formed between adjacent teeth, and the tooth tips of adjacent teeth There is a stator notch between them, and the stator usually includes two winding frames, which are installed at both ends of the stator core, and the wires (enameled wire) of the stator winding are directly wound on the winding The winding frame is used to isolate the stator winding from the axial end of the stator core and to support the stator winding. [0003] In order to insulate the circumferentially adjacent out-of-phase stator windings, the interphase insulating paper installed on the win...

AI Technical Summary

Problems solved by technology

[0003] In order to insulate the circumferentially adjacent out-of-phase stator windings, the interphase insulating paper installed on the winding skeleton needs to be accommodated in each stator slot. Since the interphase insulating paper does not have the function of sealing the slot of the stator, it is easy to cause the Entering the inner hole of the stator from the stator slot, resulting in a burning accident of the stator winding

[0004] For concentrated winding windings with relatively high slot fullness, since the phase windings wound on the stator teeth are very close to almost touching in the slots, it is difficult to insert interphase insulating paper

In addition, because the stator winding is overwound, it is easy to cause the wires of the stator winding to slip out of the stator notch and enter the inner hole of the stator without hindrance, thereby contacting the rotor arranged in the inner hole of the stator, resulting in a burning accident

Images