CN201789390U - Claw pole with bosses - Google Patents

Abstract

A claw pole with bosses is suitable for vehicular claw-pole alternating current generators. The bosses are arranged at limit ends of the claw pole, reference of a rotor in processing is the same as those of the end faces of the claw pole, parallelism and perpendicularity are guaranteed, accordingly coaxiality of the rotor and a stator during assembly is guaranteed, and motor performance is increased while possibility of the electromagnetic noise is reduced. Further, the bosses substitute a limit ring in an original scheme, processing procedures of the claw pole are simultaneously reduced, and cost is also reduced for a certain degree.

Description

The pawl utmost point of band boss

Technical field

The utility model is a kind of pawl utmost point that is suitable for the band boss of automobile-used claw-pole generator.

Background technology

Existing automobile-used pawl utmost point alternating current generator, when generator assembles, when extreme face of rotor claw and Front Cover Bearing assembling, the spacing collar of a measured length is installed between preceding this bearing and the extreme face of rotor claw, this spacing collar is in daily production and assembling process, on the one hand because the production of spacing collar is bad or cause generator amature after the assembling and the coaxiality error between stator because of the extreme planar defect of pawl, produce electromagnetic noise and swipe with stator core, because the axiality difference also can cause the inhomogeneous stressed work of bearing, thereby reduced the useful life of generator, therefore want investment to control for the machining accuracy of spacing collar and the extreme face of pawl, increase cost undoubtedly aborning, had bad hidden danger simultaneously.

Summary of the invention

The purpose of this utility model is in order to solve above-mentioned existing existing problem, a kind of pawl utmost point that has guaranteed the band boss of the depth of parallelism and perpendicularity to be provided.

The utility model is achieved in that the positive stop end at the pawl utmost point is provided with boss.

Advantage of the present utility model is, positive stop end at the pawl utmost point is provided with boss, add man-hour and the same benchmark of the extreme face of pawl at rotor, the depth of parallelism and perpendicularity have been guaranteed, thereby guaranteed the axiality of rotor and stator in assembling process, the occurrence probability that has reduced electromagnetic noise has improved motor properties simultaneously.Because boss has substituted the spacing collar in the former scheme, reduce the manufacturing procedure of the pawl utmost point simultaneously in addition, reduced cost to a certain extent again.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

The rotor structure schematic diagram of the pawl utmost point of Fig. 2 mounting strap boss;

Embodiment

Describe in detail below in conjunction with accompanying drawing: as shown in the figure, 1 is armature spindle, and 2 is the pawl utmost point, is provided with boss 2a at the positive stop end of the pawl utmost point 2.In the rotor course of processing, be that machining benchmark is processed the end face of locating footpath, end face and boss of the rotor claw utmost point 2 with armature spindle 1, can guarantee the depth of parallelism and the perpendicularity of boss machined surface.

Claims (1)

1. a pawl utmost point that is suitable for the band boss of automobile-used claw-pole generator is characterized in that, is provided with boss at the positive stop end of the pawl utmost point.

Images