CN201332313Y

CN201332313Y - Structure of micro motor bearing chamber

Info

Publication number: CN201332313Y
Application number: CNU2008202284968U
Authority: CN
Inventors: 张亮
Original assignee: XI'AN MICROMOTOR RESEARCH INSTITUTE
Current assignee: XI'AN MICROMOTOR RESEARCH INSTITUTE
Priority date: 2008-12-26
Filing date: 2008-12-26
Publication date: 2009-10-21
Anticipated expiration: 2018-12-26

Abstract

The utility model relates to a structure of a micro motor bearing chamber, which comprises a machine case and an end, wherein the end is arranged on one side of the machine case; a rotating shaft passes through the machine case and the end; an outer rotor is fixed in the machine case; the end is in a T-shaped structure; an inner stator is fixed on the end; an outer bearing is sheathed between the outer side of the end and the rotating shaft; encapsulation blocks are respectively arranged on the end and positioned at both sides of the inner stator; and a bearing chamber for installing an inner bearing is arranged on the encapsulation block which is arranged on the inner side of the end. The utility model omits a steel sleeve structure, can be used for micro outer rotor motors, can be applied to all kinds of micro motors, and is particularly suitable for being used in various motors with high performance index requirement and limited volume, especially limited diameter direction, so the motors in the same or similar sizes have reasonable structures, and the effective volume is enlarged.

Description

The structure of a kind of micro motor bearing chamber

Technical field

The utility model relates to a kind of bearing chamber of electrical micro-machine, is specifically related to the structure of a kind of micro motor bearing chamber.

Background technology

The outer-rotor structure motor normally is inserted in steel bushing or copper sheathing in the electric machine stator iron endoporus at present, machining bearing chamber in the endoporus of steel bushing or copper sheathing, be used for fixing bearing outer ring, in steel bushing, there is an axle to pass the steel bushing endoporus, and cooperate with bearing inner race, as rotating shaft, this support motor external rotor.Owing to need the design external diameter that the external rotor micromachine of 16mm is only arranged, and motor has the requirement of working under various environment, can only select deep groove ball bearing for use in the selection of bearing, so there are not enough spaces to place steel bushing in the structural design of motor.

Summary of the invention

It is a kind of simple in structure that the purpose of this utility model is to provide, omit the steel bushing structure, the space that saves can be used for the effective dimensions of motor, improved motor performance index, make electric machine structure more reasonable, the structure of the micro motor bearing chamber that effective volume increases.

For achieving the above object, the technical solution adopted in the utility model is: comprise casing and the end that is arranged on casing one side, rotating shaft runs through casing and end, the casing internal fixation has external rotor, the end is a "T"-shaped structure, and is fixed with internal stator on the end, is set with outer bearing between the outside of end and rotating shaft, the both sides that are positioned at internal stator on the end are respectively arranged with the embedding piece, and offer the bearing chamber that inner bearing is installed on the embedding piece of the inboard of end.

Embedding piece of the present utility model adopts Embedding Material or die-casting material to make.

The utility model has omitted the steel bushing structure, not only can be used for small outer-rotor type motor, can also be applied in all miniature all kinds of motors, being specially adapted to performance index requires high, volume is especially in the restricted all types of motors of diametric(al), make the electric machine structure under identical or the similar sizes condition more reasonable, effective volume increases.

Description of drawings

Fig. 1 is an overall structure schematic diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing structural principle of the present utility model and operation principle are described in further detail.

Referring to Fig. 1, the utility model comprises casing 1 and is arranged on the end 2 of casing one side, rotating shaft 3 runs through casing 1 and end 2, casing 1 internal fixation has external rotor 4, end 2 is a "T"-shaped structure, and is fixed with internal stator 5 on end 2, and 3 of the outside of end 2 and rotating shafts are set with outer bearing 6, the both sides that are positioned at internal stator 5 on end 2 are respectively arranged with Embedding Material or die-casting material is made embedding piece 7, and offer the bearing chamber that inner bearing 8 is installed on the embedding piece 7 of the inboard of end 2.

Assembling process of the present utility model is as follows: at first, bearing 3 is passed the casing 1 that is fixed with external rotor 4, get the end 2 of the "T"-shaped structure that matches with casing 1 then, and internal stator is fixed on the end 2, the both sides that are positioned at internal stator 5 on end 2 are respectively arranged with Embedding Material or die-casting material is made embedding piece 7, make internal stator 5 become as a whole with the end, set out the bearing chamber that inner bearing 8 is installed on the embedding piece 7 with the inboard of end 2 again, at last end 2 is passed rotating shaft 3 and be fixed as one with casing 1 and get final product, the inner bearing 8 of end and outer bearing 6 and rotating shaft 3 are fastening.

The application of this structure makes the motor effective volume increase 15%, motor performance index improves greater than 10%, help the protection of motor simultaneously, this structure can effectively solve the storage problem of motor under adverse circumstances, for the raising performance of small outer-rotor type motor has been opened up new road.

Claims

1, the structure of a kind of micro motor bearing chamber, comprise casing (1) and be arranged on the end (2) of casing one side, rotating shaft (3) runs through casing (1) and end (2), it is characterized in that: casing (1) internal fixation has external rotor (4), end (2) is a "T"-shaped structure, and on end (2), be fixed with internal stator (5), be set with outer bearing (6) between the outside of end (2) and rotating shaft (3), the both sides that are positioned at internal stator (5) on end (2) are respectively arranged with embedding piece (7), and offer the bearing chamber that inner bearing (8) is installed on the embedding piece (7) of the inboard of end (2).

2, the structure of micro motor bearing according to claim 1 chamber is characterized in that: said embedding piece (7) adopts Embedding Material or die-casting material to make.