CN101478211B - Micro motor - Google Patents
Micro motor Download PDFInfo
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- CN101478211B CN101478211B CN2009100958202A CN200910095820A CN101478211B CN 101478211 B CN101478211 B CN 101478211B CN 2009100958202 A CN2009100958202 A CN 2009100958202A CN 200910095820 A CN200910095820 A CN 200910095820A CN 101478211 B CN101478211 B CN 101478211B
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- stator
- utmost point
- micromachine
- rotating shaft
- rotor assembly
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Abstract
The invention relates to a micro-motor which comprises a stator module and a rotor module installed in the stator module. The stator module comprises a hollow stator framework, a coil wound outside the stator framework, and a front claw pole and a back claw pole located in the stator framework; the rotor module comprises a rotating shaft and a permanent magnet rotor which can rotate with the rotating shaft and is located in the chamber of the stator framework; the micro-motor is characterized in that a front shaft sleeve and a back shaft sleeve are fixedly embedded in the centers of the front and the back claw poles respectively, and the two ends of the rotating shaft of the rotor module can be rotatablely supported in the front and the back shaft sleeves respectively. Compared with the prior art, the micro-motor has the advantages that the front and the back shaft sleeves are directly embedded in the central holes of the front and back poles respectively, the two ends of the rotating shaft rotate under rigid support of the front and the back shaft sleeves, thereby better ensuring axial coaxiality of the rotor module and the stator module and even clearance between the rotor module and the stator module when the permanent magnet rotates.
Description
Technical field
The present invention relates to a kind of micromachine, particularly relate to a kind of Lundell micromachine.
Background technology
Motor is the general name of motor and generator, is used for finishing the power conversion between mechanical energy and the electric energy.Micromachine is a main branch of motor, structurally substantially can be divided into 3 classes: 1. electromagnetic type, and basic composition is similar to common electric machine, comprises parts such as stator module, rotor assembly, armature winding, brush; 2. composite type, common has two kinds: the combination of above-mentioned various electrical micro-machines, the combination of electrical micro-machine and electronic circuit, for example combination of DC motor and transducer, the combination of directions X and Y direction linear motor etc.; 3. non electromagnetic.And the electromagnetic type micromachine is modal a kind of, and the electromagnetic type micromachine median claw utmost point declines the type motor owing to making simple and cost is low is widely used in various occasions, divide according to purposes, the Lundell micromachine can be divided into Lundell microgenerator and Lundell micromotor two big classes.
The micromachine of electromagnetic type generally comprises stator module and rotor assembly, rotor assembly comprises a rotating shaft and the p-m rotor that can rotate with this rotating shaft, stator module then generally comprises the fore paw utmost point, front shaft sleeve, the rear solid end utmost point, rear axle housing, stator skeleton and the stator coil on the stator skeleton, p-m rotor and rotating shaft are generally two separate parts, p-m rotor generally binds round in rotating shaft, and the fore paw utmost point is passed at the two ends of rotating shaft, front shaft sleeve, the rear solid end utmost point, rear axle housing, and p-m rotor is in rotation, be easy to produce beat, so the axial concentricity between whole rotor assembly and the stator module is difficult to be guaranteed, gap between rotor assembly and the stator module is just inhomogeneous, and p-m rotor departs from the frictional dissipation that can strengthen rotor assembly self, has reduced whole efficiency of motor.
In addition, a lot of micromachines can be used in the water occasion, for example miniature water flow generator, the outside of the stator module of micromachine and rotor assembly needs to overlap a waterproof sealing case like this, and for the installation and processing convenience, generally rotor assembly and stator module are assembled in that the back compresses sealing with cover cap in the case, the micromachine of this waterproof is in the time of assembling, because seal---cover cap will be installed, and cover cap generally is pressed in rotor assembly and stator module in the stator skeleton, be easy to like this make the rotor assembly unbalance stress and left and right deviation takes place, at this moment will guarantee the axial concentricity difficulty more just between rotor assembly and the stator module.
Summary of the invention
First technical problem to be solved by this invention be provide a kind of rotor assembly and stator module at above-mentioned prior art axial concentricity better, the uniform micromachine in gap between rotor assembly and the stator module.
Even second technical problem to be solved by this invention is to make the rotor assembly unbalance stress also can not influence the waterproof micromachine of the axial concentricity of rotor assembly and stator module because of seal is installed when providing a kind of the assembling at above-mentioned prior art.
The present invention solves the technical scheme that above-mentioned first technical problem adopts: this micromachine, comprise stator module and be arranged on the interior rotor assembly of stator module, the fore paw utmost point, the rear solid end utmost point that described stator module comprises the stator skeleton of hollow, the coil outside stator skeleton and is positioned at stator skeleton; Described rotor assembly comprises a rotating shaft and the p-m rotor that can rotate with this rotating shaft, and is positioned at the cavity of stator skeleton; It is characterized in that: there are front shaft sleeve and rear axle housing in the central authorities of the described fore paw utmost point and rear solid end utmost point build-in respectively, and the rotating shaft two ends of described rotor assembly are rotatably supported in respectively in described front shaft sleeve and the rear axle housing.
The microelectrode of this structure, because forward and backward axle sleeve is directly set in the centre bore of the forward and backward pawl utmost point respectively, rotate under the non-yielding prop of forward and backward axle sleeve at the two ends of rotating shaft, so rotor assembly the time can not produce beat in work, can guarantee to greatest extent gap between the axial concentricity of rotor assembly and stator module and rotor assembly and the stator module evenly.
It is good that the rotating shaft of described rotor assembly and p-m rotor are integral the part structure by the one-shot forming of mold position Shooting Technique.
As improvement, the inwall of described stator skeleton is provided with for the fixing teeth groove of the utmost point tooth of the described fore paw utmost point and the described rear solid end utmost point, and the described fore paw utmost point is put with concentric being embedded mutually of the described rear solid end utmost point and described stator skeleton.
Type of the present invention solves above-mentioned second technical scheme that technical problem adopted: on the basis of the microelectrode structure of mentioning in above-mentioned first technical problem, also comprise be arranged on the outer case of stator module and rotor assembly and with the cover cap of case front end close-fitting, be provided with sealing ring between described stator skeleton and the bottom, described case rear end, also be provided with sealing ring between described stator skeleton and the described cover cap.
Like this, because the setting of two sealing rings has been arranged, can well guarantee the water resistance of whole micromachine, and because cover cap is set, even during assembling because of cover cap and sealing ring are installed, because the two supports of rotor assembly is in the axle sleeve of pawl utmost point center build-in, thereby thereby make rotor assembly can not cause the rotor assembly unbalance stress to influence the axial concentricity of rotor assembly and stator module because of the setting of cover cap and sealing ring, not high to the matching requirements of this micromachine.
What be highly profitable is, described cover cap is provided with the axis hole that passes for described rotating shaft front end, be provided with antifouling packing ring between this axis hole and the described rotating shaft front end, both stoped current directly to infiltrate in the stator skeleton cavity, the resistance of working together also in the water intrusion of dirt rotor assembly is caused obstruction.The rotating shaft front end can connect machine power assemblies such as impeller after passing cover cap.
The present invention is specially adapted to miniature water flow generator, connect the impeller that drives by current after for example the rotating shaft front end can being passed cover cap, rotation by impeller drives the rotating shaft rotation, thereby drive the p-m rotor rotation and form rotating magnetic field, and the coil outside the stator skeleton carries out the power conversion generating with the variation of rotating magnetic field thereby produce induced current.
Compared with prior art, the invention has the advantages that: because forward and backward axle sleeve is directly set in the centre bore of the forward and backward pawl utmost point respectively, rotate under the non-yielding prop of forward and backward axle sleeve at the two ends of rotating shaft, like this p-m rotor when rotated, can guarantee preferably gap between the axial concentricity of whole rotor assembly and stator module and rotor assembly and the stator module evenly; In addition, by outside stator module and rotor assembly, be provided with case and with the cover cap of case front end close-fitting, and between stator skeleton and bottom, described case rear end, be provided with sealing ring, between stator skeleton and cover cap, also be provided with sealing ring, both can guarantee the axial concentricity of rotor assembly and stator module, again since the two supports of rotor assembly in the axle sleeve of pawl utmost point center build-in, thereby thereby make rotor assembly can not cause the rotor assembly unbalance stress to influence the axial concentricity of rotor assembly and stator module because of the setting of cover cap and sealing ring, not high to the matching requirements of this micromachine.
Description of drawings
Fig. 1 is the exploded view of the embodiment of the invention;
Fig. 2 is the axle sleeve and the extremely concentric scheme of installation of pawl of band p-m rotor;
Fig. 3 is the cutaway view of the embodiment of the invention.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Micromachine shown in Fig. 1～3, comprise by stainless steel rotating shaft 1 and ferrite permanent-magnet rotor 2 and pass through the one-time formed rotor assembly of mold position Shooting Technique, by the fore paw utmost point 3, the rear solid end utmost point 4, front shaft sleeve 5, rear axle housing 6, the stator module that hollow tubular stator skeleton 7 and the stator coil 8 on the stator skeleton outer surface are formed, wherein the fore paw utmost point 3 and the rear solid end utmost point 4 are the stainless steel profile of tooth pawl utmost point, also be by the punching press one-shot forming, and the centre bore of the fore paw utmost point and the rear solid end utmost point is inverted to form axle sleeve hole, front shaft sleeve 5 direct embeddings are pressed in the centre bore 31 of the fore paw utmost point 3, rear axle housing 6 direct embeddings are pressed in the centre bore 41 of the rear solid end utmost point 4, to penetrate in the rear axle housing 6 with p-m rotor 2 one-time formed rotating shafts 1 rear end 11 then, 12 of front ends pass front shaft sleeve 5 and stretch out, and p-m rotor 2 then is built in the cavity of the fore paw utmost point 3 and 4 formation of the rear solid end utmost point.Hollow tubular stator skeleton 7 adopts injection molding, the inwall of stator skeleton 7 is provided with for the fixing teeth groove 71 of the utmost point tooth of the fore paw utmost point 3 and the rear solid end utmost point 4, insert in the stator skeleton 7 inwall teeth groove 71 the fore paw utmost point 3 and the rear solid end utmost point 4 fixing in opposite directions, like this, 4 of the fore paw utmost point 3 and the rear solid end utmost points are put with stator skeleton 7 concentric being embedded mutually, and the fore paw utmost point 3, the rear solid end utmost point 4, front shaft sleeve 5, rear axle housing 6, rotating shaft 1 and p-m rotor 2 then all are arranged in the cavity of stator skeleton 7.Stator coil 8 is around in the wire casing of stator skeleton outer surface by high strength enamelled wire, and is drawn by stator skeleton bead finedraw on one side.
Connecting one-time formed p-m rotor of rotating shaft injection moulding and build-in has the extremely direct socket technology of pawl of axle sleeve, has guaranteed that finally micromachine is installed and use rotor axial height in the running is concentric, thereby has reduced the self friction loss, has improved electric efficiency.
Stator module and rotor assembly also are with stainless steel case 9 outward, on two end beads of the stator skeleton 7 that is wound with stator coil 8, put water-proof silica-gel O type circle 13, after 14, axially be inserted in stainless iron case 9 again, lead-out wires of coil is aimed at case lead breach draw the back sealing, antifouling sponge washer 15 is inserted in the central shaft hole 101 of stainless iron cover cap 10, then rotating shaft 1 front end 12 is penetrated the central shaft hole 101 of cover cap 10, more than inciting somebody to action with mechanical pressing technology again stator module is housed, the micromachine case 9 and the cover cap 10 of rotor assembly compress, and finish the integral installation of generator.
The stainless iron case of closed micromachine and cover cap both for magneto provides work magnetic circuit, have also been realized whole good electrical magnetic screen to generator when realizing water-proof function, satisfied the electromagnetism environmental protection requirement.The use of antifouling sponge washer and the seal of silica gel O type for generator amature and stator coil partly provide effective watertight protection, makes it to satisfy the directly function of generating under water.
In addition, because generator core rotating shaft part does not have direct axial arrangement to connect with housing, therefore vibration in installing and using and the offset deviation axial concentricity that all do not influence rotor assembly and stator module, qualification rate that helps producing in batches and dependability.
The present invention is specially adapted to miniature current motor, for example utilize the current generating of water supply pipe, the rotating shaft front end passed connect the impeller that drives by current behind the cover cap, rotation by impeller drives the rotating shaft rotation, thereby drive the p-m rotor rotation and form rotating magnetic field, and the coil outside the stator skeleton carries out the power conversion generating with the variation of rotating magnetic field thereby produce induced current.
The present invention also can be used for other flow of liquid of separating matter and drives generating through pipeline, and is of many uses.
Claims (7)
1. a micromachine comprises stator module and is arranged on the interior rotor assembly of stator module, the fore paw utmost point, the rear solid end utmost point that described stator module comprises the stator skeleton of hollow, the coil outside stator skeleton and is positioned at stator skeleton; Described rotor assembly comprises a rotating shaft and the p-m rotor that can rotate with this rotating shaft, and is positioned at the cavity of stator skeleton; It is characterized in that: there are front shaft sleeve and rear axle housing in the central authorities of the described fore paw utmost point and rear solid end utmost point build-in respectively, and the rotating shaft two ends of described rotor assembly are rotatably supported in respectively in described front shaft sleeve and the rear axle housing;
Described micromachine also comprise be arranged on the outer case of stator module and rotor assembly and with the cover cap of case front end close-fitting, be provided with sealing ring between described stator skeleton and the bottom, described case rear end, also be provided with sealing ring between described stator skeleton and the described cover cap.
2. micromachine according to claim 1 is characterized in that: the rotating shaft of described rotor assembly and p-m rotor are integral piece.
3. micromachine according to claim 2 is characterized in that: the inwall of described stator skeleton is provided with for the fixing teeth groove of the utmost point tooth of the described fore paw utmost point and the described rear solid end utmost point, and the described fore paw utmost point is put with concentric being embedded mutually of the described rear solid end utmost point and described stator skeleton.
4. according to the described micromachine of each claim in the claim 1, it is characterized in that described micromachine is miniature water flow generator.
5. micromachine according to claim 1 is characterized in that: described cover cap is provided with the axis hole that passes for described rotating shaft front end, is provided with antifouling packing ring between this axis hole and the described rotating shaft front end.
6. according to the described micromachine of each claim in the claim 5, it is characterized in that described micromachine is miniature water flow generator.
7. according to the described micromachine of each claim in the claim 1～3, it is characterized in that described micromachine is miniature water flow generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100958202A CN101478211B (en) | 2009-02-06 | 2009-02-06 | Micro motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100958202A CN101478211B (en) | 2009-02-06 | 2009-02-06 | Micro motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101478211A CN101478211A (en) | 2009-07-08 |
| CN101478211B true CN101478211B (en) | 2011-04-27 |
Family
ID=40838853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100958202A Expired - Fee Related CN101478211B (en) | 2009-02-06 | 2009-02-06 | Micro motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101478211B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967688A (en) * | 2014-05-09 | 2014-08-06 | 东莞市光能新能源科技有限公司 | Water flow power generation device |
| CN108574357A (en) * | 2018-06-21 | 2018-09-25 | 宁波富佳实业有限公司 | A kind of rotor assembly and permanent magnetic brushless |
| CN110401271A (en) * | 2019-08-22 | 2019-11-01 | 深圳南方德尔汽车电子有限公司 | A kind of waterproof electronic water pump claw-pole motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1440109A (en) * | 2002-02-19 | 2003-09-03 | 马渊马达株式会社 | Miniature motor and its manufacture |
| CN1836360A (en) * | 2003-09-10 | 2006-09-20 | 株式会社安川电机 | Bearing section waterproof structure of vertical motor |
| CN200989321Y (en) * | 2006-10-13 | 2007-12-12 | 应万信 | Shaft sleeve structure for fair wind fan rotary shaft |
| CN201116508Y (en) * | 2007-11-28 | 2008-09-17 | 许安良 | Minitype current generator |
-
2009
- 2009-02-06 CN CN2009100958202A patent/CN101478211B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1440109A (en) * | 2002-02-19 | 2003-09-03 | 马渊马达株式会社 | Miniature motor and its manufacture |
| CN1836360A (en) * | 2003-09-10 | 2006-09-20 | 株式会社安川电机 | Bearing section waterproof structure of vertical motor |
| CN200989321Y (en) * | 2006-10-13 | 2007-12-12 | 应万信 | Shaft sleeve structure for fair wind fan rotary shaft |
| CN201116508Y (en) * | 2007-11-28 | 2008-09-17 | 许安良 | Minitype current generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101478211A (en) | 2009-07-08 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20150206 |
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| EXPY | Termination of patent right or utility model |