CN210780339U - Miniature DC permanent magnet motor - Google Patents
Miniature DC permanent magnet motor Download PDFInfo
- Publication number
- CN210780339U CN210780339U CN201922159089.7U CN201922159089U CN210780339U CN 210780339 U CN210780339 U CN 210780339U CN 201922159089 U CN201922159089 U CN 201922159089U CN 210780339 U CN210780339 U CN 210780339U
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- end cover
- stator
- rotor
- bearing
- plastic end
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- Expired - Fee Related
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Abstract
A miniature direct current permanent magnet motor comprises a stator, a shaft sleeve, an oil-containing bearing, a rotor and a plastic end cover; the stator and the plastic end cover form a motor bearing chamber, mounting holes are formed in the end face of the stator and the plastic end cover, and the rotor is sleeved in the mounting holes through an oil-retaining bearing; and shaft sleeves for fixing the rotor are arranged on the inner side and the outer side of the mounting hole of the stator. The bearing chamber of the original iron end cover is changed into the bearing chamber directly formed in the plastic end cover, so that the purpose of removing the iron end cover is achieved, and the volume of the motor is reduced; the oil-retaining bearings are used in the bearing chambers of the end cover and the stator to reduce the cost of the motor, and meanwhile, the press-fitting position and the gap of the shaft sleeve are controlled to meet the working requirement and the test requirement of the motor; the plastic end cover is used as a bearing support, and the use of the iron end cover is reduced under the condition of ensuring normal operation of the plastic end cover under complex working environments of high temperature, high vibration and the like.
Description
Technical Field
The utility model relates to a micromotor field, concretely relates to miniature direct current permanent-magnet machine.
Background
The existing motor for the automobile loading valve has higher requirement on the working stability because the motor works in a high-vibration and high-temperature working environment for a long time. Meanwhile, under the condition of meeting the requirements of high vibration and high temperature, the size of the automobile needs to be reduced as much as possible so as to further save space, the weight of the whole automobile can be reduced, and space can be reserved to increase other functional parts, so that the effects of economy, energy conservation and more additional functions are achieved.
Disclosure of Invention
The utility model provides a to above-mentioned problem, provide a miniature direct current permanent-magnet machine.
A miniature direct current permanent magnet motor comprises a stator, a shaft sleeve, an oil-containing bearing, a rotor and a plastic end cover;
the stator and the plastic end cover form a motor bearing chamber, mounting holes are formed in the end face of the stator and the plastic end cover, and the rotor is sleeved in the mounting holes through an oil-retaining bearing;
and shaft sleeves for fixing the rotor are arranged on the inner side and the outer side of the mounting hole of the stator.
Further, the plastic end cover supports a bearing of the rotor through the mounting hole.
Furthermore, the number of the oil-retaining bearings is two, and the two oil-retaining bearings are respectively arranged in the mounting hole of the end face of the stator and the mounting hole of the plastic end cover.
Further, the stator comprises a stator shell and permanent magnets arranged on the inner wall of the stator shell, and the permanent magnets are arranged on the circumference of the inner wall of the stator shell at intervals of 90 degrees.
Further, the rotor includes a rotor winding, a rotor core, a commutator, and a brush provided on the commutator.
The utility model discloses the beneficial effect who reaches does: the bearing chamber of the original iron end cover is changed into the bearing chamber directly formed in the plastic end cover so as to achieve the purpose of removing the iron end cover and reduce the volume of the motor; the oil-retaining bearings are used in the bearing chambers of the end cover and the stator to reduce the cost of the motor, and meanwhile, the press-fitting position and the gap of the shaft sleeve are controlled to meet the working requirement and the test requirement of the motor; the plastic end cover is used as a bearing support, and the use of the iron end cover is reduced under the condition of ensuring normal operation of the plastic end cover under complex working environments of high temperature, high vibration and the like.
Drawings
Fig. 1 is a schematic structural diagram of the permanent magnet motor of the present invention.
In the figure, 1-stator, 2-shaft sleeve, 3-oil-retaining bearing, 4-plastic end cover, 5-rotor and 6-oil-retaining bearing.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
A miniature direct current permanent magnet motor comprises a stator 1, a shaft sleeve 2, oil-containing bearings 3 and 6, a rotor 5 and a plastic end cover 4.
The stator 1 and the plastic end cover 4 form a motor bearing chamber, mounting holes are formed in the end face of the stator 1 and the plastic end cover 4, and the rotor 5 is sleeved in the mounting holes through oil-containing bearings 3 and 6; the inside and outside of the mounting hole of the stator 1 are provided with bushings 2 for fixing the rotor 5.
The plastic end cover 4 supports the bearing of the rotor 5 through the mounting hole. Under the condition of ensuring normal operation of the motor under complex working environments of high temperature, high vibration and the like, the use of iron end covers is reduced, and the volume of the motor is reduced.
The two oil-retaining bearings are respectively arranged in the mounting hole on the end face of the stator 1 and the mounting hole of the plastic end cover. Oil-impregnated bearings are used in the bearing chambers of the plastic end cover 4 and the stator 1 to reduce the cost of the motor, and meanwhile, the press-fitting position and the gap of the shaft sleeve 2 are controlled to meet the working requirement and the test requirement of the motor.
The stator 1 comprises a stator shell and permanent magnets arranged on the inner wall of the stator shell, wherein the permanent magnets are arranged on the circumference of the inner wall of the stator shell at intervals of 90 degrees.
The rotor 5 includes a rotor winding, a rotor core, a commutator, and brushes provided on the commutator.
The rotation speed of the miniature direct current permanent magnet motor can reach 4800RPM under the load of 22mN x m.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiment, but equivalent modifications or changes made by those skilled in the art according to the present disclosure should be included in the scope of the present invention as set forth in the appended claims.
Claims (5)
1. The utility model provides a miniature direct current permanent-magnet machine, includes stator, axle sleeve, oiliness bearing, rotor and plastics end cover, its characterized in that:
the stator and the plastic end cover form a motor bearing chamber, mounting holes are formed in the end face of the stator and the plastic end cover, and the rotor is sleeved in the mounting holes through an oil-retaining bearing;
and shaft sleeves for fixing the rotor are arranged on the inner side and the outer side of the mounting hole of the stator.
2. The miniature direct current permanent magnet motor according to claim 1, wherein: the plastic end cover supports a bearing of the rotor through the mounting hole.
3. The miniature direct current permanent magnet motor according to claim 1, wherein: the two oil-retaining bearings are respectively arranged in the mounting hole of the end face of the stator and the mounting hole of the plastic end cover.
4. The miniature direct current permanent magnet motor according to claim 1, wherein:
the stator comprises a stator shell and permanent magnets arranged on the inner wall of the stator shell, and the permanent magnets are arranged on the circumference of the inner wall of the stator shell at intervals of 90 degrees.
5. The miniature direct current permanent magnet motor according to claim 1, wherein: the rotor comprises a rotor winding, a rotor iron core, a commutator and an electric brush arranged on the commutator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922159089.7U CN210780339U (en) | 2019-12-05 | 2019-12-05 | Miniature DC permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922159089.7U CN210780339U (en) | 2019-12-05 | 2019-12-05 | Miniature DC permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210780339U true CN210780339U (en) | 2020-06-16 |
Family
ID=71049437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922159089.7U Expired - Fee Related CN210780339U (en) | 2019-12-05 | 2019-12-05 | Miniature DC permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210780339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115864691A (en) * | 2022-12-06 | 2023-03-28 | 中国船舶集团有限公司第七〇七研究所 | Small-caliber semi-integral miniature direct current servo motor |
-
2019
- 2019-12-05 CN CN201922159089.7U patent/CN210780339U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115864691A (en) * | 2022-12-06 | 2023-03-28 | 中国船舶集团有限公司第七〇七研究所 | Small-caliber semi-integral miniature direct current servo motor |
| CN115864691B (en) * | 2022-12-06 | 2024-09-27 | 中国船舶集团有限公司第七〇七研究所 | Small-caliber semi-integral miniature direct current servo motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 Termination date: 20211205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |