CN202679195U - Miniature direct current motor capable of improving axial bearing force - Google Patents
Miniature direct current motor capable of improving axial bearing force Download PDFInfo
- Publication number
- CN202679195U CN202679195U CN 201220291809 CN201220291809U CN202679195U CN 202679195 U CN202679195 U CN 202679195U CN 201220291809 CN201220291809 CN 201220291809 CN 201220291809 U CN201220291809 U CN 201220291809U CN 202679195 U CN202679195 U CN 202679195U
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- motor
- motor shaft
- angular contact
- contact ball
- housing
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Abstract
The utility model discloses a miniature direct current motor capable of improving axial bearing force. The miniature direct current motor comprises a motor housing, and a motor shaft, magnetic steel, a coil, silicon steel and a commutator that are arranged inside the motor housing. The coil and the silicon steel are disposed on an inner wall of the motor housing. A front end of the motor housing is provided with a front end cap, and a rear end of the motor housing is provided with a rear end cap. Two ends of the motor shaft are respectively arranged on the front end cap and the rear end cap through angular contact ball bearings. The two angular contact ball bearings are symmetrically arranged opposite to each other. The angular contact ball bearings are adopted to support the motor shaft, are fixed on the two ends of the motor shaft and are symmetrically arranged opposite to each other so as to allow active force on the motor shaft to be applied to the angular contact ball bearings, and then the active force is acted by the angular contact ball bearings onto a body of the motor, thereby releasing the active force and making the motor bear both radial force and axial force from two directions. Meanwhile, the axial bearing force of the motor shaft is improved, the bearings are prevented from being damaged, and the service life of the motor is prolonged.
Description
Technical field
The utility model relates to machine field, what be specifically related to is a kind of DC micromotor that improves axial holding capacity.
Background technology
At present, be fixed with the annular permanent-magnet body in the existing direct current machine, electric current produces Lorentz force by epitrochanterian coil, when epitrochanterian coil is parallel with magnetic field, continuing to turn the magnetic direction that is subject to will change again, and therefore the brush of Rotor terminal alternately contacts with conversion sheet at this moment, thereby the sense of current on the coil also changes, the Lorentz force direction that produces is constant, so motor can keep a direction to rotate.And the motor shaft of existing DC micromotor generally adopts deep groove ball bearing to be installed in the motor housing, be used for the supporting electric arbor, yet the power that deep groove ball bearing axially can bear is less, for the larger application scenario of ask for something axial force ability to bear, such as electronic gas shooting nail rifle etc., can not satisfy the requirement of the axial holding capacity of opposing.In use owing to the less damage that causes easily bearing of holding capacity, can greatly reduce the useful life of motor.Therefore, existing DC micromotor remains further to be improved.
The utility model content
For the deficiency that exists on the prior art, the utility model purpose is to be to provide a kind of DC micromotor that can bear larger larger axial force, the axial force that it can bearing radial force can bear again both direction is avoided the damage of bearing, has improved the useful life of motor.
To achieve these goals, the utility model is to realize by the following technical solutions:
A kind of DC micromotor that improves axial holding capacity, it comprises motor housing and is arranged on motor housing interior motor shaft, magnet steel, coil, silicon steel and commutator, described magnet steel is arranged on the motor shaft, and described coil and silicon steel are arranged on the inwall of motor housing; It is characterized in that be provided with front end housing at the front end of described motor housing, its rear end is provided with rear end cap; The two ends of described motor shaft are installed on front end housing and the rear end cap by angular contact ball bearing respectively, and two described angular contact ball bearings symmetrical installation the in the other direction, the axial force that makes motor can bearing radial force can bear again both direction.
The above-mentioned DC micromotor that improves axial holding capacity wherein, is respectively arranged with front copper bush and the rear copper bush suitable with the magnet steel front and back end in the front and back end that is positioned at magnet steel on the described motor shaft, is used for the dynamic balancing adjustment.
The above-mentioned DC micromotor that improves axial holding capacity wherein, is provided with the adjustment pad between described rear copper bush and the bearing.
The above-mentioned DC micromotor that improves axial holding capacity, wherein, described front end housing and rear end cap are fixed on respectively the front and back end of motor housing by straight pin, and described commutator is arranged on the end of coil and silicon steel.
The utility model adopts angular contact ball bearing to come the supporting electric arbor, the motor shaft two ends are fixed by angular contact ball bearing, and bearing is symmetrical the installation in the other direction, and the axial force that makes motor can bearing radial force can bear again both direction has improved the axial holding capacity of motor shaft, avoid damage of bearings, prolong the useful life of motor, its reasonable in design, easy to use, and axially ability to bear is high, has satisfied the larger application scenario of ask for something axial force ability to bear.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is structural representation of the present utility model.
Among the figure: the 1-motor shaft, the 2-front end housing, the 3-motor housing, the 4-magnet steel, the 5-coil, 6-silicon steel, copper bush behind the 7-, the 8-commutator, 9-adjusts pad, 10-straight pin, 11-rear end cap, copper bush before the 12-angular contact ball bearing, 13-, 14-angular contact ball bearing.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
Referring to Fig. 1, a kind of DC micromotor that improves axial holding capacity of the present utility model, it comprises motor housing 3 and is installed in motor shaft 1, magnet steel 4, coil 5, silicon steel 6 and commutator 8 in the motor housing 3.This magnet steel 4 is installed on the stage casing of motor shaft 1, and silicon steel 6 is installed and is installed in coil 5 on the silicon steel 6 at the inwall of motor housing 3, this coil 5 and magnet steel 4 corresponding settings, commutator 8 is arranged on an end of coil 5 and silicon steel 6.Be separately installed with front end housing 2 and rear end cap 11 in the front and back end of motor housing 3, this motor housing 3 adopts straight pin to be connected the location with front end housing 2, rear end cap 11 respectively, can bear larger axis to power.
It is worth mentioning that motor shaft 1 two ends of present embodiment are installed on front end housing 2 and the rear end cap 11 by angular contact ball bearing 14,12 respectively, and this angular contact ball bearing 12,14 symmetrical installation in the other direction.Present embodiment angular contact ball bearing 12,14 can separate, and it comprises assembly and the outer ring that is comprised of together inner ring, roller, retainer, and this assembly and outer ring can be installed respectively; The contact wire that roller and inner ring raceway contact position are revised can reduce stress and concentrate.The angular contact ball bearing of present embodiment can bear large radial load and axial load, because angular contact ball bearing can only transmit unidirectional axial load, therefore, just need another with it i.e. two angular contact ball bearings symmetrical installation in the other direction of angular contact ball bearing of symmetry installation for transmitting rightabout axial load, the axial force that makes motor can bearing radial force can bear again both direction improves the axial ability to bear of motor shaft 1.
In the present embodiment, the front and back end that is positioned at magnet steel 4 at motor shaft 1 is separately installed with front copper bush 15 and the rear copper bush 7 suitable with magnet steel 4 front and back ends, is used for the dynamic balancing adjustment; Between rear copper bush 7 and bearing 14, be equipped with and adjust pad 9.
Present embodiment in use, when motor shaft 1 is subject to thrust, active force on the motor shaft 1 is delivered on the inner ring of adjusting pad 9 and bearing 12 by rear copper bush 7, roller by angular contact ball bearing 12 is delivered on the outer ring of angular contact ball bearing again, and it is on the motor fuselage that the outer ring of last active force by angular contact ball bearing 12 is delivered to rear end cap 11.Because the motor fuselage can bear larger axial force, simultaneously, angular contact ball bearing 12 also can bear larger axis to power, therefore, has improved the axial holding capacity of motor shaft, makes its this motor bear larger thrust than existing micromachine.
In like manner, when motor shaft 1 under tension, active force on the motor shaft 1 is delivered on the inner ring of angular contact ball bearing 14 by front copper bush 13, roller by angular contact ball bearing 14 is delivered on the outer ring of angular contact ball bearing again, it is on the motor fuselage that the outer ring of last power by angular contact ball bearing is delivered to front end housing 2, thereby, because the motor fuselage can bear larger axial force, the active force of this motor shaft 1 has obtained release, and then makes motor can bear the axial force larger than existing micromachine.
Based on above-mentioned, the utility model adopts angular contact ball bearing 12,14 come the supporting electric arbor, and be fixed on the motor shaft two ends, and angular contact ball bearing 12,14 symmetrical installations in the other direction, make the active force on the motor shaft 1 be applied to angular contact ball bearing 12, on 14, angular contact ball bearing 12,14 are applied to active force the motor fuselage again, thereby active force is discharged, the axial force that makes motor can bearing radial force can bear again both direction, improved the axial holding capacity of motor shaft, avoid damage of bearings, prolong the useful life of motor, its reasonable in design, easy to use, and axially ability to bear is high, has satisfied the larger application scenario of ask for something axial force ability to bear.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof
Claims (4)
1. can improve the DC micromotor of axial holding capacity, it comprises motor housing and is arranged on motor housing interior motor shaft, magnet steel, coil, silicon steel and commutator, described magnet steel is arranged on the motor shaft, and described coil and silicon steel are arranged on the inwall of motor housing; It is characterized in that the front end of described motor housing is provided with front end housing, its rear end is provided with rear end cap; The two ends of described motor shaft are installed on front end housing and the rear end cap by angular contact ball bearing respectively, and the symmetrical installation in the other direction of two described angular contact ball bearings.
2. the DC micromotor that improves axial holding capacity according to claim 1 is characterized in that, is respectively arranged with front copper bush and the rear copper bush suitable with the magnet steel front and back end on the described motor shaft in the front and back end that is positioned at magnet steel.
3. the DC micromotor that improves axial holding capacity according to claim 2 is characterized in that, is provided with the adjustment pad between described rear copper bush and the bearing.
4. the described DC micromotor that improves axial holding capacity of any one according to claim 1-3, it is characterized in that, described front end housing and rear end cap are fixed on respectively the front and back end of motor housing by straight pin, described commutator is arranged on the end of coil and silicon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220291809 CN202679195U (en) | 2012-06-20 | 2012-06-20 | Miniature direct current motor capable of improving axial bearing force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220291809 CN202679195U (en) | 2012-06-20 | 2012-06-20 | Miniature direct current motor capable of improving axial bearing force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202679195U true CN202679195U (en) | 2013-01-16 |
Family
ID=47500069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220291809 Withdrawn - After Issue CN202679195U (en) | 2012-06-20 | 2012-06-20 | Miniature direct current motor capable of improving axial bearing force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202679195U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710055A (en) * | 2012-06-20 | 2012-10-03 | 昆山库克自动化科技有限公司 | Mini-type DC motor capable of improving axial bearing capacity |
| CN107659047A (en) * | 2017-11-06 | 2018-02-02 | 中科探海(苏州)海洋科技有限责任公司 | One kind bears combined load submersible machine |
-
2012
- 2012-06-20 CN CN 201220291809 patent/CN202679195U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710055A (en) * | 2012-06-20 | 2012-10-03 | 昆山库克自动化科技有限公司 | Mini-type DC motor capable of improving axial bearing capacity |
| CN102710055B (en) * | 2012-06-20 | 2015-05-13 | 昆山库克自动化科技有限公司 | Mini-type DC motor capable of improving axial bearing capacity |
| CN107659047A (en) * | 2017-11-06 | 2018-02-02 | 中科探海(苏州)海洋科技有限责任公司 | One kind bears combined load submersible machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130116 Effective date of abandoning: 20150513 |
|
| RGAV | Abandon patent right to avoid regrant |