CN102710055A - Mini-type DC motor capable of improving axial bearing capacity - Google Patents
Mini-type DC motor capable of improving axial bearing capacity Download PDFInfo
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- CN102710055A CN102710055A CN2012102049668A CN201210204966A CN102710055A CN 102710055 A CN102710055 A CN 102710055A CN 2012102049668 A CN2012102049668 A CN 2012102049668A CN 201210204966 A CN201210204966 A CN 201210204966A CN 102710055 A CN102710055 A CN 102710055A
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- contact ball
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- coil
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Abstract
The invention discloses a mini-type DC motor capable of improving the axial bearing capacity. The mini-type DC motor comprises a motor casing and a motor shaft, a magnetic cylinder, a coil, silicon steel and a commutator which are arranged in the motor casing, wherein the coil and the silicon steel are arranged on the inner wall of the motor casing; a front end cover is arranged at the front end of the motor casing, and a rear end cover is arranged at the rear end of the motor casing; and two ends of the motor shaft are respectively mounted on the front end cover and the rear end cover through angular-contact ball bearings, and the two angular-contact ball bearings are symmetrically mounted in opposite directions. According to the invention, the angular-contact ball bearings are adopted to support the motor shaft, fixed at the two ends of the motor shaft and symmetrically mounted in opposite directions, so that an acting force on the motor shaft is exerted on the angular-contact ball bearings, and then the angular-contact ball bearings exert the acting force on the body of the motor so as to release the acting force and enable the motor to bear not only a radial force but also axial forces in two directions. Therefore, the axial bearing capacity of the motor shaft is improved, the bearings are prevented from damage and the service life of the motor is prolonged accordingly.
Description
Technical field
What the present invention relates to is machine field, and what be specifically related to is a kind of DC micromotor that improves axial holding capacity.
Background technology
At present, existing direct current machine internal fixation has the annular permanent-magnet body, and electric current produces Lorentz force through epitrochanterian coil; When epitrochanterian coil is parallel with magnetic field; Continuing to change the magnetic direction that receives again will change, and therefore the brush of Rotor terminal is followed alternately contact of 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 support motor axle; Yet the power that deep groove ball bearing axially can bear is less; For the bigger application scenario of ask for something axial force ability to bear,, can not satisfy the requirement of the axial holding capacity of opposing like electronic gas ail gun etc.In use, can reduce the useful life of motor greatly owing to the less damage that causes bearing easily of holding capacity.Therefore, existing DC micromotor remains further to be improved.
Summary of the invention
To the deficiency that exists on the prior art; The present invention seeks to be to provide a kind of DC micromotor that can bear big larger axial force; The axial force that it can bearing radial force can bear both direction is again avoided the damage of bearing, has improved the useful life of motor.
To achieve these goals, the present invention realizes through following technical scheme:
A kind of DC micromotor that improves axial holding capacity; It comprises motor housing and is arranged on motor shaft, magnetic cylinder, coil, silicon steel and the commutator in the motor housing; Said magnetic cylinder is arranged on the motor shaft, and said 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 said motor housing, its rear end is provided with rear end cap; The two ends of said motor shaft are installed on front end housing and the rear end cap through angular contact ball bearing respectively, and two said angular contact ball bearings in the other direction symmetry the axial force that makes motor can bearing radial force can bear both direction again is installed.
The above-mentioned DC micromotor that improves axial holding capacity wherein, is respectively arranged with the preceding copper bush and back copper bush suitable with magnetic cylinder front and back end in the front and back end that is positioned at the magnetic cylinder on the said 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 said back copper bush and the bearing.
The above-mentioned DC micromotor that improves axial holding capacity, wherein, said front end housing and rear end cap are fixed on the front and back end of motor housing respectively through straight pin, and said commutator is arranged on the end of coil and silicon steel.
The present invention adopts angular contact ball bearing to come the support motor axle, and the motor shaft two ends are fixed through angular contact ball bearing, and bearing symmetry installation in the other direction; The axial force that makes motor can bearing radial force can bear both direction has again improved the axial holding capacity of motor shaft, avoids 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 bigger application scenario of ask for something axial force ability to bear.
Description of drawings
Specify the present invention below in conjunction with accompanying drawing and embodiment;
Fig. 1 is a structural representation of the present invention.
Among the figure: the 1-motor shaft, the 2-front end housing, the 3-motor housing, 4-magnetic cylinder, 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 present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with embodiment, further set forth the present invention.
Referring to Fig. 1, a kind of DC micromotor that improves axial holding capacity of the present invention, it comprises motor housing 3 and is installed in motor shaft 1, magnetic cylinder 4, coil 5, silicon steel 6 and the commutator 8 in the motor housing 3.This magnetic cylinder 4 is installed on the stage casing of motor shaft 1, silicon steel 6 is being installed on the inwall of motor housing 3 and is being installed in the coil 5 on the silicon steel 6, and this coil 5 and the 4 corresponding settings of magnetic cylinder, commutator 8 are arranged on an end of coil 5 and silicon steel 6.On the front and back end of motor housing 3, be separately installed with front end housing 2 and rear end cap 11, this motor housing 3 adopts straight pin to be connected the location with front end housing 2, rear end cap 11 respectively, makes it can bear larger axis to power.
What deserves to be mentioned is that motor shaft 1 two ends of present embodiment are installed on front end housing 2 and the rear end cap 11 through angular contact ball bearing 14,12 respectively, and this angular contact ball bearing 12,14 symmetry installation in the other direction.Present embodiment angular contact ball bearing 12,14 can separate, and it comprises assembly and the outer ring of being made up 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 big radial load and axial load; Because angular contact ball bearing can only transmit unidirectional axial load; Therefore; For transmit rightabout axial load just need another with it angular contact ball bearing of installing of symmetry promptly two angular contact ball bearings in the other direction symmetry install, the axial force that makes motor can bearing radial force can bear both direction again improves the axial ability to bear of motor shaft 1.
In the present embodiment, the front and back end that on motor shaft 1, is positioned at magnetic cylinder 4 is separately installed with the preceding copper bush 15 and back copper bush 7 suitable with magnetic cylinder 4 front and back ends, is used for the dynamic balancing adjustment; Adjustment pad 9 is installed between back copper bush 7 and bearing 14.
Present embodiment in use; When motor shaft 1 receives thrust; Active force on the motor shaft 1 is delivered on the inner ring of adjustment pad 9 and bearing 12 through back copper bush 7; Roller through 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 through angular contact ball bearing 12 is delivered to rear end cap 11.Because the motor fuselage can bear bigger 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 bigger thrust than existing micromachine.
In like manner; When motor shaft 1 receives pulling force; Active force on the motor shaft 1 is delivered on the inner ring of angular contact ball bearing 14 through preceding copper bush 13, and the roller through angular contact ball bearing 14 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 power through angular contact ball bearing is delivered to front end housing 2; Thereby; Because the motor fuselage can bear bigger axial force, the active force of this motor shaft 1 has obtained release, and then makes motor can bear the axial force bigger than existing micromachine.
Based on above-mentioned, the present invention adopts angular contact ball bearing 12,14 to come the support motor axle, and is fixed on the motor shaft two ends; And angular contact ball bearing 12,14 symmetry is in the other direction installed, and the active force on the motor shaft 1 is applied on the angular contact ball bearing 12,14, and angular contact ball bearing 12,14 is applied to the motor fuselage with active force again; Thereby active force is discharged, and the axial force that makes motor can bearing radial force can bear both direction has again 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 bigger application scenario of ask for something axial force ability to bear.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The scope of the claimed invention by the appended claims and their equivalents defined
.
Claims (4)
1. can improve the DC micromotor of axial holding capacity; It comprises motor housing and is arranged on motor shaft, magnetic cylinder, coil, silicon steel and the commutator in the motor housing; Said magnetic cylinder is arranged on the motor shaft, and said coil and silicon steel are arranged on the inwall of motor housing; It is characterized in that the front end of said motor housing is provided with front end housing, its rear end is provided with rear end cap; The two ends of said motor shaft are installed on front end housing and the rear end cap through angular contact ball bearing respectively, and the symmetry installation in the other direction of two said 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 the preceding copper bush and back copper bush suitable with magnetic cylinder front and back end on the said motor shaft in the front and back end that is positioned at the magnetic cylinder.
3. the DC micromotor that improves axial holding capacity according to claim 2 is characterized in that, is provided with the adjustment pad between said back copper bush and the bearing.
4. according to any described DC micromotor that improves axial holding capacity of claim 1-3; It is characterized in that; Said front end housing and rear end cap are fixed on the front and back end of motor housing respectively through straight pin, said commutator is arranged on the end of coil and silicon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210204966.8A CN102710055B (en) | 2012-06-20 | 2012-06-20 | Mini-type DC motor capable of improving axial bearing capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210204966.8A CN102710055B (en) | 2012-06-20 | 2012-06-20 | Mini-type DC motor capable of improving axial bearing capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102710055A true CN102710055A (en) | 2012-10-03 |
| CN102710055B CN102710055B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210204966.8A Expired - Fee Related CN102710055B (en) | 2012-06-20 | 2012-06-20 | Mini-type DC motor capable of improving axial bearing capacity |
Country Status (1)
| Country | Link |
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| CN (1) | CN102710055B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099055A (en) * | 2014-05-12 | 2015-11-25 | 上海燎慧机电科技有限公司 | Shock-resistant impact-resistant motor and gas nail shooter comprising the shock-resistant impact-resistant motor |
| CN107070060A (en) * | 2016-12-30 | 2017-08-18 | 德清崎辉机械科技有限公司 | A kind of three bearing arrangements of disc type electric machine |
| CN110323883A (en) * | 2019-07-30 | 2019-10-11 | 伏为电机(广州)有限公司 | A kind of motor |
| CN113623235A (en) * | 2021-09-23 | 2021-11-09 | 浙江浙能绍兴滨海热电有限责任公司 | Clean water pump and water pressure adjusting method applying same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270435A (en) * | 1999-03-30 | 2000-10-18 | 马渊马达株式会社 | Small size electric motor and manufacture thereof |
| JP2008057691A (en) * | 2006-08-31 | 2008-03-13 | Nsk Ltd | Ball bearing |
| CN201893625U (en) * | 2010-12-03 | 2011-07-06 | 陈新 | Electric motor for high-pressure axial flow fan |
| CN202679195U (en) * | 2012-06-20 | 2013-01-16 | 昆山库克自动化科技有限公司 | Miniature direct current motor capable of improving axial bearing force |
-
2012
- 2012-06-20 CN CN201210204966.8A patent/CN102710055B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270435A (en) * | 1999-03-30 | 2000-10-18 | 马渊马达株式会社 | Small size electric motor and manufacture thereof |
| JP2008057691A (en) * | 2006-08-31 | 2008-03-13 | Nsk Ltd | Ball bearing |
| CN201893625U (en) * | 2010-12-03 | 2011-07-06 | 陈新 | Electric motor for high-pressure axial flow fan |
| CN202679195U (en) * | 2012-06-20 | 2013-01-16 | 昆山库克自动化科技有限公司 | Miniature direct current motor capable of improving axial bearing force |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099055A (en) * | 2014-05-12 | 2015-11-25 | 上海燎慧机电科技有限公司 | Shock-resistant impact-resistant motor and gas nail shooter comprising the shock-resistant impact-resistant motor |
| CN107070060A (en) * | 2016-12-30 | 2017-08-18 | 德清崎辉机械科技有限公司 | A kind of three bearing arrangements of disc type electric machine |
| CN110323883A (en) * | 2019-07-30 | 2019-10-11 | 伏为电机(广州)有限公司 | A kind of motor |
| CN113623235A (en) * | 2021-09-23 | 2021-11-09 | 浙江浙能绍兴滨海热电有限责任公司 | Clean water pump and water pressure adjusting method applying same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102710055B (en) | 2015-05-13 |
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Effective date of registration: 20200325 Address after: 215300 room 2, no.1999, Donghe Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Suzhou newt Micro Motor Technology Co., Ltd Address before: 215347, No. 1699 Reed Road South, Yushan Town, Suzhou City, Jiangsu, Kunshan Patentee before: KUNSHAN KUKE AUTOMATION TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20200620 |