CN202550720U

CN202550720U - Coupling structure of iron core and rotating shaft

Info

Publication number: CN202550720U
Application number: CN2012200798959U
Authority: CN
Inventors: 王严; 肖文明; 何敏; 周福兵
Original assignee: SHENZHEN FELLER MAGTECH Corp
Current assignee: SHENZHEN FELLER MAGTECH Corp
Priority date: 2012-03-06
Filing date: 2012-03-06
Publication date: 2012-11-21
Anticipated expiration: 2022-03-06

Abstract

The utility model discloses a coupling structure of an iron core and a rotating shaft, which refers to the coupling part of a rotor core and the rotating shaft. The rotor core is formed by the lamination of rotor sheets; a lug boss which extends along the axial direction is arranged on the inner circular surface of the rotor sheets; and a groove matching with the lug boss is arranged on the rotating shaft at the place corresponding to the lug boss. The rotor core and the rotating shaft are in transition fit, so the rotating shaft and the iron core can not deform. The coupling through the lug boss and the groove is better than the coupling through three connecting pieces adopted in key connection manner, so the coupling structure of the iron core and the rotating shaft is more suitable for use on a motor which frequently rotates positively and negatively.

Description

The fit structure of iron core and rotating shaft

[technical field]

The utility model relates to motor and generator, relates in particular to the rotor structure design of motor and generator, is specially a kind of rotor core and rotating shaft fit structure.

[background technology]

Motor and generator are significant products of electric era, in the middle of Human's production and life, play an important role, and utilize magnetic field to generate electricity; Most important is exactly iron core and rotor structure, and in the prior art, more generator adopts interference fit to connect (as shown in Figure 1) with the rotor core of motor with linking of rotating shaft or let rotating shaft and rotor core produce interactive power in a circumferential direction in this way with key connecting (as shown in Figure 2); Carry out transmission and drive rotation, it is to rely on frictional force to come carry-over moment that interference fit connects, and the magnitude of interference is little to skid between rotor core and the rotating shaft easily; Transmission is unstable, and the magnitude of interference is big, needs very big pressure when this rotating shaft is pressed into rotor core; Be prone to cause the distortion of rotating shaft iron core; And if adopt key connecting, if the insufficient strength of key perhaps cooperates bad; In the motor of often rotating operation, break down easily, reduced the reliability of rotor structure.It is reliable and stable to need to propose a kind of connection, can not cause the connecting mode of rotating shaft iron core distortion.

[summary of the invention]

The utility model is to above problem, and it is stable to have proposed a kind of connection, can not cause and skid or the unsettled connected mode of transmission, and can not cause the distortion of rotating shaft iron core.

The technical scheme of the utility model: the fit structure of a kind of iron core and rotating shaft; Be meant rotor core and rotating shaft mating part; Said rotor core is overrided to form by rotor punching; On the internal circular surfaces of rotor punching, have protrudingly, protrudingly extend, and corresponding protruding place there is the groove of adaptive convexity in rotating shaft along axial direction.

Circle adopts interference fits with rotating shaft in the said rotor core, and the convexity that mainly relies on circle in the rotor core to go up similar key is come transfer torque with the groove fit on the axle, this structure rotating shaft when assembling iron core of packing into easily.

The beneficial effect of the utility model: between rotor core and rotating shaft, adopt interference fits, can not cause the distortion of rotating shaft and iron core, and the cooperation of three connectors is better in the mix proportion key connecting of protruding and groove, is more suitable for being used in the motor of frequent rotating.

[description of drawings]

Fig. 1 is rotor core and rotating shaft over-surplus fit structure sketch map;

Fig. 2 is rotor core and rotating shaft key connecting fit structure sketch map;

Fig. 3 is the utility model structural representation.

Wherein: 1, rotor core; 2, key; 3, rotating shaft; 4, convexity; 5, groove.

[embodiment]

For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.

Embodiment 1:

Fig. 1 and Fig. 2 are the connecting modes that has provided two kinds of prior aries; Fig. 1 is the mode transmission driving torque that interference fit is adopted in rotor core and rotating shaft, and Fig. 2 to be key connect, the periphery that combines in rotor core 1 and rotating shaft 3; To the groove of depression should be arranged; And key 2 is assembled in the groove, embeds between the two transfer torque.

The fit structure of a kind of iron core and rotating shaft; Be meant rotor core 1 and rotating shaft 3 mating parts; Said rotor core 1 is overrided to form by rotor punching; On the internal circular surfaces of rotor punching, have protruding 4, protruding 4 to extend, and there is adaptive protruding 4 groove 5 in corresponding protruding 4 place in rotating shaft 3 along axial direction.

Circle adopts interference fits with rotating shaft 3 in the said rotor core 1, mainly relies on circle in the rotor core 1 to go up the convexity 4 of similar key and cooperates to come transfer torque with groove 5 on the axle, this structure rotating shaft when assembling iron core of packing into easily.

Claims

1. the fit structure of iron core and rotating shaft; Be meant rotor core and rotating shaft mating part; Said rotor core is overrided to form by rotor punching; On the internal circular surfaces of rotor punching, have protrudingly, protrudingly extend, and corresponding protruding place there is the groove of adaptive convexity in rotating shaft along axial direction.

2. according to the fit structure of said iron core of claim 1 and rotating shaft, it is characterized in that circle adopts interference fits with rotating shaft in the said rotor core.