CN2620419Y - Optimized structure for small motor - Google Patents
Optimized structure for small motor Download PDFInfo
- Publication number
- CN2620419Y CN2620419Y CN 02295360 CN02295360U CN2620419Y CN 2620419 Y CN2620419 Y CN 2620419Y CN 02295360 CN02295360 CN 02295360 CN 02295360 U CN02295360 U CN 02295360U CN 2620419 Y CN2620419 Y CN 2620419Y
- Authority
- CN
- China
- Prior art keywords
- center cavity
- outer casing
- cylindrical outer
- motor
- cylindrical shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Dc Machiner (AREA)
Abstract
A small electromotor comprises a cylindrical shell, a magnet stator arranged in the cylindrical shell, a central cavity arranged in the magnet stator, a central shaft, a winding, a tail-hood for supplying power to the winding and an electric brush of the tail-hood, which is characterized in that the cylindrical shell is integrated with the central cavity; a bearing cavity arranged on the cylindrical shell head face is an expansion part corresponded to the central cavity and another bearing is arranged on the cylindrical inner wall of the magnet stator; with the optimized structure of the utility model, the inside space of the motor can be utilized to a maximum extent, so that the motor can be provided with high power efficiency and a structure with lighter weight.
Description
Affiliated technical field
The utility model relates to a kind of miniature motor of structure optimization, and the utility model also relates to the novel miniature motor that a kind of diameter can dwindle again.
Background technology
As everyone knows, with portable devices such as digital camera, Portable, personal communication system, person paging machines is forward miniaturizations such as information equipment, the lightweight development of representative, and the small-sized electric that provides power source and vibration information to use to the said equipment also develops to miniaturization day by day, and carrying out with the millimeter is the fierce contest of unit.Fig. 1 is the whole cutaway view of existing miniature motor.This miniature motor comprises: a cylindrical outer casing (6), be located at center cavity (3) and the magnet stator (4) that is located at center cavity (3) outside in the cylindrical outer casing (6), one is located at the middle central shaft (1) that rotates by the bearing (2) (7) at center cavity (3) two ends of center cavity (3), one along central shaft (1) motor rotating coil (5), coil (5) links to each other with central shaft (1) by retainer ring (8), a tail-hood (10) that is used for to coil (5) power supply has brush (9) on the tail-hood (10).Can see that from above-mentioned accompanying drawing the center cavity of this miniature motor (3) links together by riveting and cylindrical outer casing (6).But can see that also there are many problems in this riveting mode, the one, center cavity (3) is in use loosening easily with the connecting place of cylindrical outer casing (6), and serious also can causing comes off.In the riveting process, be difficult to guarantee the concentricity of center cavity (3) and cylindrical outer casing (6) on the other hand, run-off the straight easily, this must increase the gap between coil (5) and magnet stator (4) in the course of processing, to avoid both frictions mutually at work, cause motor to damage, but this descends efficiency of motor.Can also see that from Fig. 1 the bearing of miniature motor (2) (7) is installed in the inwall of center cavity (3), the installation method space interest rate of this structure is few, and this also is the one of the main reasons that hinders the further miniaturization of miniature motor.Because the center cavity (3) of this structure limit by inwall and bearing (2) (7) size, and the size of bearing (2) (7) is limited by the structure of self, therefore is difficult on technology, the really further miniaturization of realization miniature motor on the size.
Summary of the invention
The purpose of this utility model just provides a kind of miniature motor through structure optimization.
Another purpose of the present utility model just provides the miniature motor that a diameter can be littler.
The technical solution of the utility model is: comprise a tubular motor housing, be located at the center cavity in the cylindrical outer casing, be characterized in: center cavity just has been connected one with it when processing tubular motor housing, its bearing bore that shows as the casing end face is a bulge with respect to center cavity, thereby effectively guaranteed the minimizing of center cavity diameter, another bearing then is installed on the tubular inwall of center cavity outer wall magnet stator.This electric machine structure that allows cylindrical outer casing and center cavity be connected as a single entity, one side has guaranteed the precision of its processing, has reduced operation.Can utilize the inner space of motor to greatest extent on the other hand, thereby the size of motor is reduced greatly, simultaneously,, can provide that power is more efficient, the more light-weighted miniature motor of structure to portable set with this incorporate electric machine structure.
Description of drawings
Fig. 1 is the whole cutaway view of existing miniature motor.
Fig. 2 is the whole cutaway view of the utility model miniature motor.
Embodiment
Describe the concrete implementation detail that the utility model proposes in detail below in conjunction with above-mentioned accompanying drawing, the utility model comprises a cylindrical outer casing (6), be located at center cavity (3) and the cylinder magnet stator (4) that is located at center cavity (3) outside in the cylindrical outer casing (6), bearing (2) bulge with respect to center cavity (3), another bearing (7) is installed on the inwall of magnet stator (4), one by the rotating shaft (1) of above-mentioned bearing (2) (7) through center cavity (3), a space that is in magnet stator (4) and cylindrical outer casing (6) inwall and the synchronous coil (5) that rotates of central shaft (1) that links to each other with central shaft (1) by retainer ring (8), a tail-hood (10) and a brush (9) thereof that is used for to above-mentioned coil (5) power supply.Can see that from above-mentioned accompanying drawing cylindrical outer casing (6) and center cavity (3) are connected as a single entity, this structure can obtain with the method for punching stretch, also can obtain by other physics such as die casting or chemical method.Unlike the prior art be, end bearing of the present utility model (2) is a bulge with respect to center cavity (3), another bearing (7) then places the tubular inwall of magnet stator (4).This once-forming design of mini motor cylindrical outer casing (6) and center cavity (3), guaranteed the precision of its processing on the one hand, comprise parameters such as concentricity and gradient, improved the useful life of motor, reduced cost of manufacture, the inner space of micro-machine is utilized, thereby makes micro-machine further have more superior space in the miniaturization Design.The micro-machine that utilizes said structure to obtain will provide the high-quality that power is more efficient, the life-span is longer, weight is lighter miniature motor to portable set.
Claims (2)
1, a kind of miniature motor, comprise a cylindrical outer casing, be located at center cavity and the stator magnet that is located at the center cavity outside in the cylindrical outer casing, one is located in the center cavity through the central shaft of two bearings and the coil in stator magnet and the cylindrical outer casing inner wall space of being located at that links to each other with central shaft by retainer ring, a tail-hood and a brush thereof that is used for to above-mentioned coil power supply, it is characterized in that: cylindrical outer casing and center cavity are connected as a single entity, the bearing bore of end face be one with respect to the central shaft bulge, another bearing is placed in the inwall of the other end of center cavity at the tubular stator magnet.
2, a kind of miniature motor according to claim 1 is characterized in that: cylindrical outer casing and center cavity are that a punching stretch is shaped in processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02295360 CN2620419Y (en) | 2002-12-31 | 2002-12-31 | Optimized structure for small motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02295360 CN2620419Y (en) | 2002-12-31 | 2002-12-31 | Optimized structure for small motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2620419Y true CN2620419Y (en) | 2004-06-09 |
Family
ID=34238787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02295360 Expired - Fee Related CN2620419Y (en) | 2002-12-31 | 2002-12-31 | Optimized structure for small motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2620419Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201719A (en) * | 2010-12-22 | 2011-09-28 | 胡景威 | Production method of outer rotor type brushless DC (direct current) motor for model airplane |
-
2002
- 2002-12-31 CN CN 02295360 patent/CN2620419Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201719A (en) * | 2010-12-22 | 2011-09-28 | 胡景威 | Production method of outer rotor type brushless DC (direct current) motor for model airplane |
| CN102201719B (en) * | 2010-12-22 | 2016-06-01 | 胡景威 | The production method of brshless DC motor is turned outside a kind of model plane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JINLONG HOLDING GROUP CO. LTD. Free format text: FORMER NAME OR ADDRESS: JINLONG ELECTROMECHANICAL CO., LTD., WENZHOU |
|
| CP03 | Change of name, title or address |
Address after: Jinlong science and Technology Park, Jin Dao, Jin Jin Road, North elephant Town, Yueqing, Zhejiang Patentee after: Jinlong Proprietary Group Co., Ltd. Address before: Yueqing Zhejiang white elephant industrial zone Wenzhou Jinlong electromechanical Co., Ltd. Patentee before: Jinlong Electromechanical Co., Ltd. Wenzhou |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |