CN102931797A - Coreless motor - Google Patents
Coreless motor Download PDFInfo
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- CN102931797A CN102931797A CN2012104754600A CN201210475460A CN102931797A CN 102931797 A CN102931797 A CN 102931797A CN 2012104754600 A CN2012104754600 A CN 2012104754600A CN 201210475460 A CN201210475460 A CN 201210475460A CN 102931797 A CN102931797 A CN 102931797A
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- bearing
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- shell
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Abstract
The invention relates to a coreless motor which comprises a shell (1), a center magnet (2), commutators (3 and 4) and a rotor (5). The commutators (3 and 4) are arranged on the external diameters of bearings, and the rear end of the rotor (5) is fixed on the bearing I (9). The coreless motor is characterized in that the front end of the rotor (5) is connected with a shaft (6), and the shaft (6) penetrates through the bearing II which is fixed on the shell (1). Due to the adoption of the coreless motor designed by the invention, a coil is supported by two bearings, the defects of low stability and reliability of one bearing supporting the coil in the prior art are overcome, and the structural reliability and stability are improved. Furthermore, due to the adoption of dual magnets, the magnetic field generated by the motor is stronger, and the torque is larger.
Description
Technical field
The present invention relates to a kind of motor, relate in particular to a kind of hollow cup DC motor.
Background technology
More use hollow-cup motor in the present electronic product, hollow-cup motor typically refers to a kind of structure of brush direct current motor.Hollow-cup motor has housing, is provided with brush at an end of housing, is provided with the motor stator and the rotor that are comprised of axle, commutator assembly, hollow cup coil, magnet steel, bearing etc. in housing.Existing hollow-cup motor profile is cylinder or cylindrical shape, and brush direct current motor is by magnets of stator, the rotor line bag, and commutator, brush, axle, bearing, end cap, the parts such as shell form, such as Fig. 1.
Traditional rotor line bag is around to tin steel lamination.So-called hollow-cup motor, as shown in Figure 2, its rotor is wired bag only, does not have tin steel lamination.Magnet is positioned at the center, and is fixed on the shell.The front end of line bag is unsettled.There is bearings the rear end of line bag, and so-called " rear end " referred to phase changer, that end of brush, and so-called " front end " refers to there is not phase changer, that end of brush that is to say that the line bag is single bearings.The line bag stability of this structure, reliability is difficult to reach requirement.
Summary of the invention
The present invention has designed a kind of hollow-cup motor of new construction, be that the front end of rotor is unsettled with the line bag that solves prior art hollow core cup motor, there is bearings the rear end of line bag, that is to say that the line bag is single bearings, the line bag stability of this structure, reliability is difficult to meet the requirements of problem, the object of the present invention is to provide a kind of Novel hollow cup motor, is used for improving stability and the reliability of hollow-cup motor.
The technical solution adopted in the present invention is a kind of hollow-cup motor, comprises shell 1, centring magnet 2, be positioned at the commutator 3,4 at bearing outside diameter place, rotor 5, rotor 5 rear ends are fixed on the bearing one, it is characterized in that the front end of rotor 5 is connected with axle 6, and axle 6 passes the bearing two that is fixed on the shell 1.So-called " rear end " referred to phase changer, that end of brush, and so-called " front end " refers to there is not phase changer, that end of brush.
Described bearing one is outer transition, and namely shell rotates;
Described bearing two can with gear box or miscellaneous part, such as load, share bearing;
Described internal diameter of outer cover place is provided with magnet 7,8, and rotor is positioned between centring magnet 2 and the magnet 7,8, producible magnetic field, and moment of torsion is larger;
Adopt the hollow-cup motor structure of the present invention's design, realized that the duplex bearing of line bag supports, overcome prior art coil single-bearing and supported the stability of bringing, the defective that reliability is not high has improved the reliability and stability of structure.Further, the present invention adopts dual magnet, and the magnetic field that motor is produced is stronger, and moment of torsion is larger.
Description of drawings
The schematic diagram of the brush direct current motor that Fig. 1 is traditional;
The schematic diagram of Fig. 2 hollow-cup motor;
The schematic diagram of Fig. 3 hollow-cup motor of the present invention;
The schematic diagram of Fig. 4 hollow-cup motor of the present invention.
1-shell wherein; The 2-centring magnet; The 3-commutator; The 4-commutator; The 5-rotor; The 6-bearing; 7-magnet; 8-magnet; 9-bearing one; 10-bearing two.
Embodiment
Below in conjunction with accompanying drawing embodiments of the present invention are described in further detail; but described embodiment is not limited to the present invention; under every prerequisite not breaking away from the technology of the present invention essence or aim; adopt the structure similar to the present invention or make be equal to or the equivalence variation or replacement, all should list protection scope of the present invention in.
A kind of hollow-cup motor as shown in Figure 3 comprises shell 1, and centring magnet 2 is positioned at the commutator 3,4 at bearing outside diameter place, rotor 5, and line bag rear end is fixed on the bearing one, and the front end of rotor 5 is connected with axle 6, and axle 6 passes the bearing two that is fixed on the shell 1.So-called " rear end " referred to phase changer, that end of brush, and so-called " front end " refers to there is not phase changer, that end of brush, bearing 1 are outer transition.
A kind of hollow-cup motor as shown in Figure 4 comprises shell, and centring magnet is positioned at the commutator at bearing outside diameter place, rotor, and line bag rear end is fixed on the bearing one, and the front end of rotor is connected with axle 6, and axle 6 passes the bearing two that is fixed on the shell.So-called " rear end " referred to phase changer, that end of brush, and so-called " front end " refers to there is not phase changer, that end of brush, bearing one are outer transition, are provided with magnet 7 at the inwall of shell, 8, be used for the progressive magnetic field that motor produces that strengthens, moment of torsion is increased.
Claims (4)
1. hollow-cup motor, comprise shell (1), centring magnet (2), be positioned at the commutator (3 at bearing outside diameter place, 4), rotor (5), rotor (5) rear end is fixed on the bearing one (9), the front end that it is characterized in that rotor (5) is connected with axle (6), and axle (6) passes the bearing two (10) that is fixed on the shell (1).
2. hollow-cup motor according to claim 1 is characterized in that described bearing one (9) is outer transition.
3. hollow-cup motor according to claim 1 and 2 is characterized in that described bearing two (10) can share bearing with gear box or miscellaneous part.
4. hollow-cup motor according to claim 3 is characterized in that described shell (1) inner radius also is provided with magnet (7,8), and rotor is positioned between centring magnet (2) and the magnet (7,8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104754600A CN102931797A (en) | 2012-11-22 | 2012-11-22 | Coreless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104754600A CN102931797A (en) | 2012-11-22 | 2012-11-22 | Coreless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102931797A true CN102931797A (en) | 2013-02-13 |
Family
ID=47646532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104754600A Pending CN102931797A (en) | 2012-11-22 | 2012-11-22 | Coreless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102931797A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2279741Y (en) * | 1996-10-18 | 1998-04-22 | 向家盈 | Brushless double-magnetic gap energy-saving DC motor |
| CN1461240A (en) * | 2001-02-15 | 2003-12-10 | 并木精密宝石株式会社 | Samll-sized vibrating motor |
| WO2011135930A1 (en) * | 2010-04-30 | 2011-11-03 | 並木精密宝石株式会社 | Cylindrical coreless motor |
| CN102497073A (en) * | 2011-11-17 | 2012-06-13 | 哈尔滨工业大学 | Transverse magnetic flux type brushless feed double-rotor motor |
| CN203104180U (en) * | 2012-11-22 | 2013-07-31 | 苏州波斯特克精密电机有限公司 | Coreless motor |
-
2012
- 2012-11-22 CN CN2012104754600A patent/CN102931797A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2279741Y (en) * | 1996-10-18 | 1998-04-22 | 向家盈 | Brushless double-magnetic gap energy-saving DC motor |
| CN1461240A (en) * | 2001-02-15 | 2003-12-10 | 并木精密宝石株式会社 | Samll-sized vibrating motor |
| WO2011135930A1 (en) * | 2010-04-30 | 2011-11-03 | 並木精密宝石株式会社 | Cylindrical coreless motor |
| CN102497073A (en) * | 2011-11-17 | 2012-06-13 | 哈尔滨工业大学 | Transverse magnetic flux type brushless feed double-rotor motor |
| CN203104180U (en) * | 2012-11-22 | 2013-07-31 | 苏州波斯特克精密电机有限公司 | Coreless motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |