CN202696431U - Miniature DC (direct current) motor with novel single-bearing structure - Google Patents
Miniature DC (direct current) motor with novel single-bearing structure Download PDFInfo
- Publication number
- CN202696431U CN202696431U CN 201220339866 CN201220339866U CN202696431U CN 202696431 U CN202696431 U CN 202696431U CN 201220339866 CN201220339866 CN 201220339866 CN 201220339866 U CN201220339866 U CN 201220339866U CN 202696431 U CN202696431 U CN 202696431U
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- housing
- motor
- bearing
- rotating shaft
- casing
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Abstract
The utility model relates to a miniature DC motor with a novel single-bearing structure. The miniature DC motor includes a casing, a stator arranged in the casing, and a rotation shaft connected with the casing, wherein a rotor rotating around the rotation shaft is arranged on the rotation shaft; an electrical brush assembly electrically connected with the rotor is also arranged on the casing; and one end of the rotation shaft is movably fixed on the casing, and the other end is movably fixed on the casing through a bearing. The miniature DC motor provided by the utility model overcomes the problem of high difficulty to ensuring the poor concentricity of a dual-bearing structure, and the fit clearance between the rotation shaft and the bearing can be reduced to 0.001mm so as to obviate clearance noise of the motor.
Description
[technical field]
The utility model relates to electric motors, specifically refers to a kind of dc micro-motor that is applied in the novel single bearing structure in the image documentation equipment.
[background technology]
Along with advancing by leaps and bounds of electronic product technology in recent years, the miniature electric machine equipment is applied in the various devices gradually.At present, existing DC micromotor generally is comprised of rotor portion, end cap part, stationary part.Described rotor portion comprises commutator, axle core, lamination, piezo-resistance and coil, and described end cap portions is divided and comprised brush assembly of electric, oiliness bearing and cover plate, and described stationary part comprises casing, magnetic stripe.The operation principle of micromotor is to utilize commutator to commutate to change the sense of current in the coil, thereby make coil in magnetic field, be subjected to force direction consistent, the rotor driven continuous rotation, thus by mechanism driving such as the gear on the axle or belts, just can drive other machines work.
Motor on the market has dual bearing structure usually, and this structure is easy to cause motor to block because of the decentraction of two bearings, can occur maybe that to block the motor current that rotating shaft causes large because of bearing, even motor is stuck etc., and bad phenomenon occurs.
[utility model content]
The purpose of this utility model is to solve the fixing bearing decentraction in rotating shaft two ends and causes the stuck deficiency of motor, and proposes a kind of dc micro-motor of novel single bearing structure.
In order to achieve the above object, a kind of micromotor of the present utility model, comprise housing, be arranged on the stator in the housing, the rotating shaft that is connected with housing, described rotating shaft is provided with the rotor of the rotation of enclosing, also be provided with the brush assembly of electric that is electrically connected with rotor on the housing, an end of wherein said rotating shaft is movably fixed on the housing, and the other end is movably fixed on the housing by a bearing.
Described bearing comprises main part, and the dead eye that is located at main part central authorities reaches by the fixed part of main part to the outer peripheral edges projection.
The inwall of described dead eye is provided with oil film.
The fit clearance of described dead eye and rotating shaft is 0.001mm.
The dc micro-motor of the utility model single bearing structure, comprise housing, be arranged on the stator in the housing, the rotating shaft that is connected with housing, described rotating shaft is provided with the rotor of the rotation of enclosing, also be provided with the brush assembly of electric that is electrically connected with rotor on the housing, one end of wherein said rotating shaft is movably fixed on the housing, and the other end is movably fixed on the housing by a bearing.Overcome the difficult problem that guarantees of dual bearing structure concentricity, and the fit clearance of rotating shaft and bearing can be contracted to 0.001mm to avoid the gap noise of motor.
[description of drawings]
Fig. 1 be the utility model micromotor cross-sectional view;
Fig. 2 is bearing generalized section of the present utility model;
Fig. 3 is rotating shaft of the present utility model and bearing attached structural representation.
[embodiment]
Below in conjunction with accompanying drawing, the utility model micromotor is elaborated.
See shown in Fig. 1 to 3 that a kind of micromotor of the present utility model comprises housing 10, described housing forms the receiving space that coin is flat.One rotating shaft 70 is arranged in the receiving space of housing 10, and it support and connection is got up and rotatable, and described rotating shaft 70 is provided with the rotor 40 of the rotation of enclosing, and described rotor comprises that substrate, substrate bottom generally are made as
ThreeThe commutator segment of the utmost point also is provided with the mass that increases vibratory output and cutting magnetic field and obtains actuating force on the substrate
ThreeThe group coil, they are bonded on the substrate with binding agent, and described substrate is the insulator of injection mo(u)lding;
Be provided with stator 20 in the described housing 10, the brush assembly of electric 30 that is electrically connected with rotor 40.One end of described rotating shaft 70 is movably fixed on the housing 10, and housing 10 is provided with the recess 60 of relative set, and an end of rotating shaft 70 just is movably fixed in the recess 60, and the other end is movably fixed on the housing 10 by a bearing 50.To overcome the difficult problem that guarantees of traditional double bearing arrangement concentricity, guarantee rotor 40 and brush assembly of electric 30 stable contacts; After bearing 50 was pressed into, rotating shaft and bearing 50 fit clearances were 0.001mm, are not subjected to the concentric restriction of dead eye, guarantee axle only in the casing dead eye smooth and easy rotation to avoid the gap noise of motor.In addition, described bearing 50 comprises main part 51, and the dead eye 53 that is located at main part 51 central authorities reaches by the fixed part 52 of main part 51 to the outer peripheral edges projection.Described fixed part 52 is embedded in housing 10, and is more firm.
The inwall of described dead eye 53 is provided with oil film 531.Dead eye 53 is little with rotating shaft 70 fit clearances, and rotating shaft 70 produces pressure to bearing 50 in rotary course, at the dead eye 53 inner oil pressure that produce, with the oil pressure of bearing inside out, form oil film 531, thereby the lubrication of playing reduces noise.
The above only is preferred embodiments of the present utility model; protection range of the present utility model is not limited with above-mentioned execution mode; as long as the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or changed, all should include in the protection range of putting down in writing in claims.
Claims (4)
1. the dc micro-motor of a novel single bearing structure, comprise housing, be arranged on the stator in the housing, the rotating shaft that is connected with housing, described rotating shaft is provided with the rotor of the rotation of enclosing, also be provided with the brush assembly of electric that is electrically connected with rotor on the housing, it is characterized in that: an end of described rotating shaft is movably fixed on the housing, and the other end is movably fixed on the housing by a bearing.
2. micromotor according to claim 1, it is characterized in that: described bearing comprises main part, is located at the dead eye of main part central authorities and by the fixed part of main part to the outer peripheral edges projection.
3. micromotor according to claim 2, it is characterized in that: the inwall of described dead eye is provided with oil film.
4. micromotor according to claim 3, it is characterized in that: the fit clearance of described dead eye and rotating shaft is 0.001mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339866 CN202696431U (en) | 2012-07-14 | 2012-07-14 | Miniature DC (direct current) motor with novel single-bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339866 CN202696431U (en) | 2012-07-14 | 2012-07-14 | Miniature DC (direct current) motor with novel single-bearing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202696431U true CN202696431U (en) | 2013-01-23 |
Family
ID=47551984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220339866 Expired - Fee Related CN202696431U (en) | 2012-07-14 | 2012-07-14 | Miniature DC (direct current) motor with novel single-bearing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202696431U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332414A (en) * | 2017-08-14 | 2017-11-07 | 江苏环球特种电机有限公司 | A kind of meterial saving and high efficiency threephase asynchronous |
| CN112953101A (en) * | 2021-02-26 | 2021-06-11 | 秦皇岛信能能源设备有限公司 | Wheel hub motor with single bearing structure and automobile |
-
2012
- 2012-07-14 CN CN 201220339866 patent/CN202696431U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107332414A (en) * | 2017-08-14 | 2017-11-07 | 江苏环球特种电机有限公司 | A kind of meterial saving and high efficiency threephase asynchronous |
| CN112953101A (en) * | 2021-02-26 | 2021-06-11 | 秦皇岛信能能源设备有限公司 | Wheel hub motor with single bearing structure and automobile |
| CN112953101B (en) * | 2021-02-26 | 2022-01-11 | 秦皇岛信能能源设备有限公司 | Wheel hub motor with single bearing structure and automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000, building two to four, building B, third industrial district, Shiyan Industrial Park, Shiyan Avenue, Shenzhen, Baoan District, Guangdong Patentee after: SHENZHEN JIAAI MOTOR CO., LTD. Address before: 518000, building two to four, building B, third industrial district, Shiyan Industrial Park, Shiyan Avenue, Shenzhen, Baoan District, Guangdong Patentee before: Shenzhen Jiaai Motor Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000, building two to four, building B, third industrial district, Shiyan Industrial Park, Shiyan Avenue, Shenzhen, Baoan District, Guangdong Patentee after: Shenzhen Jiaai Motor Co., Ltd. Address before: 518000, building two to four, building B, third industrial district, Shiyan Industrial Park, Shiyan Avenue, Shenzhen, Baoan District, Guangdong Patentee before: SHENZHEN JIAAI MOTOR CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20210714 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |