CN209119964U

CN209119964U - A kind of micromotor

Info

Publication number: CN209119964U
Application number: CN201822192789.1U
Authority: CN
Inventors: 程正军; 黄晓斌; 张宁
Original assignee: Dongguan Tianfu Motor Technology Co Ltd
Current assignee: Guangdong Tianfu Motor Technology Co.,Ltd.
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2019-07-16
Anticipated expiration: 2028-12-24

Abstract

The utility model relates to motor fields, and in particular to a kind of micromotor.A kind of micromotor, including shell, end-cap assembly, shaft, rotor assembly and stator module, end-cap assembly and casing cover close, rotor assembly is socketed in shaft, it is equipped with the first circlip between roller end and end-cap assembly, the second elastic block piece is equipped between rotor assembly and the output end of shell, the first elastic block piece and the second elastic block piece play position-limiting action, rotor assembly is limited in shell and cover plate assembly, and the first elastic block piece and the second elastic block piece are flexible；When there is the error in length in axial direction in institute's rotor assembly and end-cap assembly assembly, the first elastic block piece and the second elastic block piece also can elastic shrinkage and normally assemble, avoid component from loosening in the axial direction of shaft and generate vibration and noise.

Description

A kind of micromotor

Technical field

The utility model relates to motor fields, and in particular to a kind of micromotor.

Background technique

With keeping updating for electric product, mechanical energy workmanship is converted electrical energy into, micromotor is as electronic production The core component of product, higher requirements are also raised for performance design of the electronic product to motor, it is also desirable to and it is continuous to update, To meet market to the performance requirement of micromotor, the competitiveness of electric product is improved.

The production of the existing various spare and accessory parts of motor can not accomplish zero error, and axial gap can not disappear after this causes motor to assemble It removes, it is final to generate vibration and generate noise；It is well known that the machining accuracy of part with the production prices of part be it is corresponding, The machining accuracy of part is such as improved, the processing cost of several times will be increased, blindly improves the processing of part to eliminate noise Precision be it is reasonless, therefore, it is necessary to carried out in structure eliminate axial spacing to eliminate noise.

Utility model content

The deficiency of noise is also easy to produce for micromotor in the prior art, the utility model provides a kind of micromotor, It is designed from structure, to prevent micromotor from generating noise.

To achieve the above object, the utility model is achieved by the following technical programs: a kind of micromotor, including outer Shell, end-cap assembly, rotor assembly, shaft and stator module, the shell have open end and output end, the end-cap assembly with The open end cap is closed；Axial setting and one end of the shaft along the shell are rotationally connected with the end-cap assembly, separately One end is rotationally connected with the output end and stretches out the output end；The rotor assembly is set in the shaft；The stator Component is fixed on the inside of the shell；The end-cap assembly includes end cap and the brush that is fixed on the end cap, the end It covers and is equipped with mounting groove, the first elastic block piece is equipped between the end of the shaft and the wall surface of the mounting groove；The shaft On be arranged with the second elastic block piece, second elastic block piece is between the rotor assembly and output end.

Further, first elastic block piece and second elastic block piece are animal and plant fiber baffle or silicon rubber Baffle.

Further, the rotor assembly includes the insulation retaining ring being successively fixedly sheathed in the shaft, iron core, commutation Device and oil baffle；The iron core is equipped with the copper wire group being firmly connected with it, and the commutator is abutted with the brush.

Further, second elastic block piece is located between the output end and the insulation retaining ring.

Further, the stator module includes that two panels is fixed in the magnetic shoe in the shell and being arranged symmetrically, the magnetic Watt between the iron core and the shell.

A kind of micromotor disclosed by the utility model compared with prior art, have the advantage that the roller end with It is equipped with the first circlip between the cover board, the second elastic block piece, institute are equipped between the rotor assembly and the output end It states the first elastic block piece and second elastic block piece and plays position-limiting action, the rotor assembly is limited in the shell and described In cover plate assembly, and first elastic block piece and second elastic block piece have elasticity；When institute's rotor assembly and the end When there is the error in length in the shaft axial direction in cap assemblies assembly, first elastic block piece and second elastic block piece Also can elastic shrinkage and normally assemble, avoid the component from loosening in the shaft axial direction and generate vibration and noise.

Detailed description of the invention

Fig. 1 is a kind of cross-sectional view of micromotor of the utility model.

Fig. 2 is the cross-sectional view of the end cap in the utility model.

Appended drawing reference: 1, shell, 11, open end, 12, output end, 2, end-cap assembly, 21, end cap, 22, brush, 23 are led String holes, 24, mounting groove, 3, rotor assembly, 31, shaft, 32, insulation retaining ring, 33, iron core, 34, commutator, 35, oil baffle, 36, Copper wire group, 4, stator module, 41, magnetic shoe, 51, first bearing, 52, second bearing, the 6, first elastic block piece, the 7, second elasticity gear Piece.

Specific embodiment

A kind of micromotor of utility model is further described below in conjunction with attached drawing and specific embodiment.

Referring to Figure 1 to Fig. 2, a kind of micromotor, including shell 1, end-cap assembly 2, rotor assembly 3, shaft 31 and fixed Sub-component 4, the shell 1 include open end 11 and output end 12, and the open end 11 of the end-cap assembly 2 and the shell 1 is covered It closes, forms one hollow box, the stator module 4 is fixed in the medial surface of the shell 1, and the shaft 31 is along described outer The axial setting of shell 1, and 31 one end of the shaft is rotationally connected with outside described after the stator module 4 through second bearing 52 The output end 12 of shell 1, and the shaft 31 is stretched out outside the output end 12, as the output end of power, 21 turns of the shaft It can be used as power output when dynamic；31 other end of shaft is rotationally connected on the end-cap assembly 2 through first bearing 51；Institute It states rotor assembly 3 to be fixed in the shaft 31, the rotor assembly is not in contact with each other with the stator module 4.

The stator module 4 includes two blocks of magnetic shoes 41, and two blocks of magnetic shoes 41 are fixed on the inner sidewall of the shell 1, Two blocks of magnetic shoes 41 are arranged symmetrically and are mutually not attached to.

The end-cap assembly 2 includes end cap 21 and brush 22, and the brush 22 is fixedly connected on the end cap 21 and position In 21 center of end cap；The end cap 21 is equipped with wire guide 23 and mounting groove 24, and the wire guide 23 is used for the electricity Conducting wire on brush 22 connects out outside the end cap 21；The mounting groove 24 is for being fixedly connected with the first bearing 51, and described turn The first elastic block piece 6 is equipped between the end of axis 31 and the wall surface of the mounting groove 24, i.e., the described shaft 31 passes through the bearing First elastic block piece 6 is connected to after 51.

The rotor assembly 3 includes the insulation retaining ring 32 being from left to right successively socketed in the shaft 31, iron core 33, changes To device 34 and oil baffle 35, direction from left to right is consistent with from the direction of output end 12 to open end 11 of the shell 1；Institute State and be wound with copper wire group 36 on iron core 33, the copper wire group 36 is electrically connected with the commutator 34, the commutator 34 with it is described Brush 22 is in close contact, when the commutator 34 is rotated with the shaft 31, the phase of the commutator 34 and the brush 22 To position change but still remain the state of contact.

The shaft 31 is equipped with the second elastic block piece 7 for being secured to socket, and second elastic block piece 7 is located at described It insulate between retaining ring 32 and the second bearing 52.

First elastic block piece 6 and second elastic block piece 7 are animal and plant fiber baffle or silicon rubber baffle, tool It is flexible.

First elastic block piece 6 plays position-limiting action with second elastic block piece 7, and the rotor assembly 3 is limited in In the shell 1 and the cover plate assembly 2；When institute's rotor assembly 3 and the end-cap assembly 2 assemble the length occurred in axial direction When error；Part processing herein is positive error, i.e. the actual length of part is longer than design length, axially refers to the shaft 31 axial direction；First elastic block piece 6 and second elastic block piece 7 also can elastic shrinkage and normally assemble, avoid described There are fit-up gaps with the end-cap assembly 2 in the axial direction for rotor assembly 3, to avoid generating vibration and noise.

For those skilled in the art, it is various corresponding that other can be made according to above technical scheme and design Change and deformation, and all these change and modification all should belong to the utility model claims protection scope it It is interior.

Claims

1. a kind of micromotor, including shell (1), end-cap assembly (2), rotor assembly (3), shaft (31) and stator module (4), The shell (1) has open end (11) and output end (12), and the end-cap assembly (2) and the open end (11) lid close；Institute It states axial setting and one end of the shaft (31) along the shell to be rotationally connected with the end-cap assembly (2), other end rotation connects It is connected to the output end (12) and stretches out the output end (12)；The rotor assembly (3) is set on the shaft (31)；It is described Stator module (4) is fixed on the inside of the shell (1)；It is characterized by: the end-cap assembly (2) includes end cap (21) and consolidates The brush (22) being connected on the end cap (21), the end cap (21) are equipped with mounting groove (24), the end of the shaft (31) The first elastic block piece (6) are equipped between the wall surface of the mounting groove (24)；The second elasticity gear is arranged on the shaft (31) Piece (7), second elastic block piece (7) is between the rotor assembly (3) and output end (12).

2. micromotor according to claim 1, it is characterised in that: first elastic block piece (6) and second bullet Property baffle (7) be animal and plant fiber baffle or silicon rubber baffle.

3. micromotor according to claim 2, it is characterised in that: the rotor assembly (3) includes successively being fixedly attached In insulation retaining ring (32), iron core (33), commutator (34) and oil baffle (35) on the shaft (31)；On the iron core (33) Equipped with the copper wire group (36) being firmly connected with it, the commutator (34) abuts with the brush (22).

4. micromotor according to claim 3, it is characterised in that: second elastic block piece (7) is located at the output It holds between (12) and the insulation retaining ring (32).

5. micromotor according to claim 3, it is characterised in that: the stator module (4) includes that two panels is fixed in institute The magnetic shoe in shell (1) and being arranged symmetrically is stated, the magnetic shoe is between the iron core (33) and the shell (1).