CN102710055B - 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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- CN102710055B CN102710055B CN201210204966.8A CN201210204966A CN102710055B CN 102710055 B CN102710055 B CN 102710055B CN 201210204966 A CN201210204966 A CN 201210204966A CN 102710055 B CN102710055 B CN 102710055B
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- motor
- contact ball
- motor shaft
- ball bearing
- angular contact
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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 improving axial holding capacity.
Background technology
At present, existing direct current machine internal fixtion has annular permanent magnets, electric current produces Lorentz force by epitrochanterian coil, when epitrochanterian coil is parallel with magnetic field, continue to turn the magnetic direction be subject to again will change, therefore now the brush of Rotor terminal alternately contacts with conversion sheet, thus the sense of current on coil also changes, the Lorentz force direction produced 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 arranged in motor housing, for support motor axle, but the power that deep groove ball bearing axially can bear is less, for the application scenario that ask for something axial force ability to bear is larger, as electronic gas shooting nail rifle etc., the requirement of resisting axial holding capacity can not be met.The damage in use easily causing bearing because holding capacity is less, can reduce the useful life of motor greatly.Therefore, existing DC micromotor needs further to be improved.
Summary of the invention
For the deficiency that prior art exists, the present invention seeks to be to provide a kind of DC micromotor can bearing larger larger axial force, it can bear the axial force that radial load can bear again both direction, avoids the damage of bearing, improves the useful life of motor.
To achieve these goals, the present invention realizes by the following technical solutions:
A kind of DC micromotor improving axial holding capacity, it comprises motor housing and is arranged on motor shaft, magnetic cylinder, coil, silicon steel and the commutator in motor housing, described magnetic cylinder is arranged on 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, and its rear end is provided with rear end cap; The two ends of described motor shaft are arranged on front end housing and rear end cap respectively by angular contact ball bearing, and angular contact ball bearing described in two is symmetrical in the other direction installs, motor can be born axial force that radial load can bear again both direction.
The above-mentioned DC micromotor improving axial holding capacity, wherein, described motor shaft is respectively arranged with the front copper bush suitable with magnetic cylinder front and back end and rear copper bush in the front and back end being positioned at magnetic cylinder, adjusts for dynamic balancing.
The above-mentioned DC micromotor improving axial holding capacity, wherein, is provided with adjustment pad between described rear copper bush and bearing.
The above-mentioned DC micromotor improving axial holding capacity, wherein, described front end housing and rear end cap are fixed on the front and back end of motor housing respectively by straight pin, and described commutator is arranged on one end of coil and silicon steel.
The present invention adopts angular contact ball bearing to carry out support motor axle, motor shaft two ends are fixed by angular contact ball bearing, and bearing is symmetrical in the other direction installs, motor can be born axial force that radial load can bear again both direction, improves the axial holding capacity of motor shaft, avoid bearing damage, extend the useful life of motor, its reasonable in design, easy to use, and axial ability to bear is high, meet the application scenario that ask for something axial force ability to bear is larger.
Accompanying drawing explanation
The present invention is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is structural representation of the present invention.
In figure: 1-motor shaft, 2-front end housing, 3-motor housing, 4-magnetic cylinder, 5-coil, 6-silicon steel, copper bush after 7-, 8-commutator, 9-adjusts pad, 10-straight pin, 11-rear end cap, 12-angular contact ball bearing, copper bush before 13-, 14-angular contact ball bearing.
Embodiment
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.
See Fig. 1, a kind of DC micromotor improving axial holding capacity of the present invention, it comprises motor housing 3 and is arranged on motor shaft 1, magnetic cylinder 4, coil 5, silicon steel 6 and the commutator 8 in motor housing 3.This magnetic cylinder 4 is arranged on the stage casing of motor shaft 1, the inwall of motor housing 3 is installed silicon steel 6 and is arranged on the coil 5 on silicon steel 6, and the setting corresponding with magnetic cylinder 4 of this coil 5, commutator 8 is arranged on one end of coil 5 and silicon steel 6.The front and back end of motor housing 3 is separately installed with front end housing 2 and rear end cap 11, and this motor housing 3 adopts straight pin to be connected with front end housing 2, rear end cap 11 respectively and locates, and can bear larger axis to power.
It is worth mentioning that, motor shaft 1 two ends of the present embodiment are arranged on front end housing 2 and rear end cap 11 respectively by angular contact ball bearing 14,12, and the symmetrical installation in the other direction of this angular contact ball bearing 12,14.The present embodiment angular contact ball bearing 12,14 can be separated, and it comprises the assembly and outer ring that are 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 the present embodiment can bear large radial load and axial load, because angular contact ball bearing can only transmit unidirectional axial load, therefore, just another symmetrical angular contact ball bearing installed i.e. two angular contact ball bearings symmetrical installation in the other direction is with it needed for transmitting rightabout axial load, motor can be born axial force that radial load 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 motor shaft 1 is positioned at magnetic cylinder 4 be separately installed with suitable with magnetic cylinder 4 front and back end before copper bush 15 and rear copper bush 7, adjust for dynamic balancing; Be provided with between rear copper bush 7 and bearing 14 and adjust pad 9.
The present embodiment in use, when motor shaft 1 is subject to thrust, active force on motor shaft 1 is delivered on the inner ring of adjustment pad 9 and bearing 12 by rear copper bush 7, be delivered on the outer ring of angular contact ball bearing by the roller of angular contact ball bearing 12 again, last active force is delivered on rear end cap 11 i.e. motor fuselage by the outer ring of angular contact ball bearing 12.Because motor fuselage can bear larger axial force, meanwhile, angular contact ball bearing 12 also can bear larger axis to power, this improves the holding capacity of motor shaft axis, enables its this motor bear larger thrust than existing micromachine.
In like manner, when motor shaft 1 under tension, active force on motor shaft 1 is delivered on the inner ring of angular contact ball bearing 14 by front copper bush 13, be delivered on the outer ring of angular contact ball bearing by the roller of angular contact ball bearing 14 again, last power is delivered on front end housing 2 i.e. motor fuselage by the outer ring of angular contact ball bearing, thus, because motor fuselage can bear larger axial force, the active force of this motor shaft 1 obtains release, and then enables motor bear the axial force larger than existing micromachine.
Based on above-mentioned, the present invention adopts angular contact ball bearing 12, 14 carry out support motor axle, and be fixed on motor shaft two ends, and angular contact ball bearing 12, 14 symmetrical installations in the other direction, the active force on motor shaft 1 is made to be applied to angular contact ball bearing 12, on 14, angular contact ball bearing 12, active force is applied to motor fuselage by 14 again, thus active force is discharged, motor can be born axial force that radial load can bear again both direction, improve the axial holding capacity of motor shaft, avoid bearing damage, extend the useful life of motor, its reasonable in design, easy to use, and axial ability to bear is high, meet the application scenario that ask for something axial force ability to bear is larger.
More than show and describe general 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; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (1)
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 motor housing, described magnetic cylinder is arranged on 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, and its rear end is provided with rear end cap; The two ends of described motor shaft are arranged on front end housing and rear end cap respectively by angular contact ball bearing, and the symmetrical installation in the other direction of angular contact ball bearing described in two, described motor shaft is respectively arranged with the front copper bush suitable with magnetic cylinder front and back end and rear copper bush in the front and back end being positioned at magnetic cylinder, adjustment pad is provided with between described rear copper bush and bearing, described front end housing and rear end cap are fixed on the front and back end of motor housing respectively by straight pin, and described commutator is arranged on one end of coil and silicon steel;
When motor shaft is subject to thrust, active force on motor shaft is delivered on the inner ring of adjustment pad and bearing by rear copper bush, be delivered on the outer ring of angular contact ball bearing by the roller of angular contact ball bearing again, last active force is delivered on rear end cap and motor fuselage by the outer ring of angular contact ball bearing;
When motor shaft under tension, active force on motor shaft is delivered on the inner ring of angular contact ball bearing by front copper bush, be delivered on the outer ring of angular contact ball bearing by the roller of angular contact ball bearing again, last active force is delivered on front end housing and motor fuselage by the outer ring of angular contact ball bearing.
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 CN102710055A (en) | 2012-10-03 |
| CN102710055B true 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 |
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| Country | Link |
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| CN (1) | CN102710055B (en) |
Families Citing this family (3)
| 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 |
Citations (3)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008057691A (en) * | 2006-08-31 | 2008-03-13 | Nsk Ltd | Ball bearing |
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2012
- 2012-06-20 CN CN201210204966.8A patent/CN102710055B/en not_active Expired - Fee Related
Patent Citations (3)
| 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 |
| 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 |
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| CN102710055A (en) | 2012-10-03 |
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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 |