CN202197199U

CN202197199U - Round and flat trislot direct current micro motor improved structure

Info

Publication number: CN202197199U
Application number: CN2011202986958U
Authority: CN
Inventors: 陈祉浩
Original assignee: SHANTOU CHENGHAI CHAOLI MICROMOTOR CO Ltd
Current assignee: Guangdong Chaoli Motor Co ltd; GUANGDONG CHAOLI MOTOR MACHINERY CO.,LTD.
Priority date: 2011-08-17
Filing date: 2011-08-17
Publication date: 2012-04-18
Anticipated expiration: 2021-08-17

Abstract

The present utility model discloses a round and flat trislot direct current micro motor improved structure. The structure comprises a stator group, a rotor group and an end cover group. The stator group comprises a motor shell, a magnet, a spring and an oil bearing. The rotor group comprises a main shaft, a punching sheet, an enameled wire, a commutator, a copper mesotron and an insulation mesotron. The end cover group comprises a glue cover, an oil bearing, a carbon brush holder, carbon and a damping strip. In the round and flat trislot direct current micro motor improved structure, a carbon type brush is adopted, the carbon type brush is used in the commutator or a slip ring of the motor, and acting as a slide contacting body of leading out/in current, the electric conduction, the heat conduction and the lubricating performance of the carbon type brush are good, and the carbon type brush is provided with certain mechanical strength and inverting spark instinct. During the operation process, a layer of uniform, proper and stable oxide film can be rapidly formed on the surface of the commutator.

Description

Circle flat three-flute direct current micromotor structure-improved

Technical field

The utility model relates to a kind of electrical micro-machine, particularly relates to a kind of round flat three-flute direct current micromotor structure-improved.

Background technology

Generally, what the flat type three-flute direct current micromotor of circle used at present is metallic brush, by compound silver palladium alloy material.This metallic brush is three needle-likes, and pin arm elastic pressure is 3～4G, is the some contact with contacting of commutator.Contacting of point and point, commutator produces with the brush pin and slides, and produces between the metal at contact site and outstanding position and welds; Thereby pulled out material softer in the commutator, it is transferred on the harder brush sheet material, this layer material is deposited as the deposit of standing shape at surface of the electric brush; Deposit produces abrasive wear at commutator face; Sweep the abrasive dust of bulk at commutator face, and shift onto and cause the commutator short circuit to be crashed in the groove of commutator, the brush faller gill blows.

In addition, metallic brush is inconvenient in assembling process, needs to use special demonstration to amplify instrumental correction, and it is excessive etc. assemble the bad asymmetric or spacing of brush sheet that makes easily, direct life-span and the fatal influence of waveform generation to electrical micro-machine.

Summary of the invention

The purpose of the utility model is to provide a kind of round flat three-flute direct current micromotor structure-improved, and it uses carbon formula brush to assemble easily, need not use special demonstration to amplify instrument and proofread and correct the adjusting play; And carbon formula brush has commutation ability preferably, long service life.

The purpose of the utility model and to solve its technical problem be that technical scheme below adopting realizes.A kind of round flat three-flute direct current micromotor structure-improved according to the utility model proposes comprises stator pack, rotor set and end cap group; Said stator pack comprises: casing; Be arranged at the tile type magnet of this casing inner wall; Be arranged at the oiliness bearing at casing top and be arranged at the bow type spring between magnet; Said rotor set comprises: with the main shaft of the coaxial setting of said stator group, laminate iron core that punching constitutes, be embedded in enamelled wire in this iron core, be arranged at the commutator of this main shaft lower end, be arranged at the copper meson of main shaft upper end respectively and be arranged at the nylon meson below this copper meson by one group; Said end cap group comprises: the Jiao Gai of sealing said machine casing opening, be arranged at glue lid middle inside oiliness bearing, be arranged on glue cover cavity body and a pair of carbon brush holder of installing relatively and be installed in the carbon of each carbon brush holder end.

Said bow type spring is elastomeric stainless steel wire.

The outside of said carbon brush holder is provided with amortisseur bar.

Said carbon formula brush is to be combined by carbon brush holder and carbon granules, and pressure is 6～10G, is the face contact with contacting of commutator.

Said carbon brush holder is the copper alloy that contains the noble metal beryllium element.

By technique scheme, the advantage that the utility model circle flat three-flute direct current micromotor structure-improved has is:

The utility model uses its current density of direct current micromotor of carbon brush high, to big electric current, the occasion of exerting oneself is well suited for greatly; Assembling easily need not used special demonstration to amplify instrument and proofread and correct the adjusting play; And carbon formula brush has commutation ability preferably, long service life; The flat type three-flute of the circle of the utility model direct current micromotor structure-improved is used on the aeromodelling airplane, can makes its flight time lengthening.

Description of drawings

Fig. 1 be the utility model partly cut open structural representation.

Fig. 2 is the cross section structure sketch map of the end cap of the utility model.

Fig. 3 is the structural representation of the end cap of the utility model.

Fig. 4 A is the structure chart of the carbon formula brush of the utility model; Fig. 4 B is the other direction structure chart of the carbon formula brush of the utility model; Fig. 4 C is the another direction structure figure of the carbon formula brush of the utility model.

11: casing 12: magnet 13: oiliness bearing

14: spring 21: main shaft 22: punching

23: enamelled wire 24: commutator 25: the copper meson

26: insulation meson 31: glue lid 32: oiliness bearing

33: carbon brush holder 34: carbon 35: amortisseur bar

Embodiment

See also shown in Fig. 1～3, the round flat three-flute direct current micromotor structure-improved of the utility model, it comprises: stator pack, rotor set and end cap group; This rotor set is arranged on the inside of the housing that stator pack and end cap group combine.This stator pack comprises: casing 11, be arranged at this casing inner wall tile type magnet 12, be arranged at the oiliness bearing 13 at casing top and be arranged at the bow type spring 14 between magnet.This bow type spring 14 is elastomeric stainless steel wire.

This rotor set comprises: with the main shaft 21 of the coaxial setting of said stator group, laminate iron core that punching 22 constitutes, be embedded in enamelled wire 23 in this iron core, be arranged at the commutator 24 of these main shaft 21 lower ends, be arranged at the copper meson 25 of main shaft 21 upper ends respectively and be arranged at the insulation meson 26 below this copper meson 25 by one group.

Shown in Fig. 2 and 3, this end cap group comprises: the glue lid 31 of sealing said machine casing 11 openings, be arranged at glue cover 31 middle inside oiliness bearing 32, be arranged on glue and cover 31 inner chamber body and a pair of carbon brush holder of installing relatively 33, be installed in the carbon 34 of each carbon brush holder 33 end and be installed in the amortisseur bar 35 on carbon brush holder 33 outer surfaces.

Of Fig. 4 A, Fig. 4 B and Fig. 4 C; Carbon formula brush is used in the flat type three-flute direct current micromotor improvement of the utility model circle back; Carbon formula brush is commutator or the slip ring that is used for motor, as deriving the sliding contact body that imports electric current, its conduction; Heat conduction and greasy property are good, and have the instinct of certain mechanical strength and switching-over property spark.In running, can form even, the appropriate and stable oxide film of one deck quickly at commutator face.

Carbon formula brush is to be combined by carbon brush holder 33 and carbon granules (carbon 34), and pressure is 6～10G, is the face contact with contacting of commutator 24.Carbon brush holder 33 is for containing the copper alloy of noble metal beryllium element, and carbon granules (carbon 34) adds copper by phosphorus content 85% and cooperates coagulating agent to be made.

The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any pro forma restriction; So every the utility model technical scheme content that do not break away from, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of the utility model technical scheme according to the technical spirit of the utility model.

Claims

1. a round flat three-flute direct current micromotor structure-improved comprises stator pack, rotor set and end cap group, it is characterized in that:

Said stator pack comprises: casing; Be arranged at the tile type magnet of this casing inner wall; Be arranged at the oiliness bearing at casing top and be arranged at the bow type spring between magnet;

Said rotor set comprises: with the main shaft of the coaxial setting of said stator group, laminate iron core that punching constitutes, be embedded in enamelled wire in this iron core, be arranged at the commutator of this main shaft lower end, be arranged at the copper meson of main shaft upper end respectively and be arranged at the nylon meson below this copper meson by one group;

Said end cap group comprises: the Jiao Gai of sealing said machine casing opening, be arranged at glue lid middle inside oiliness bearing, be arranged on glue cover cavity body and a pair of carbon brush holder of installing relatively and be installed in the carbon of each carbon brush holder end.

2. round flat three-flute direct current micromotor structure-improved according to claim 1, it is characterized in that: said bow type spring is elastomeric stainless steel wire.

3. round flat three-flute direct current micromotor structure-improved according to claim 1, it is characterized in that: the outside of said carbon brush holder is provided with amortisseur bar.

4. round flat three-flute direct current micromotor structure-improved according to claim 1, it is characterized in that: said carbon formula brush is to be combined by carbon brush holder and carbon granules, and pressure is 6～10G, is the face contact with contacting of commutator.

5. round flat three-flute direct current micromotor structure-improved according to claim 4, it is characterized in that: said carbon brush holder is the copper alloy that contains the noble metal beryllium element.