CN2583871Y - Brushless dc motor - Google Patents
Brushless dc motor Download PDFInfo
- Publication number
- CN2583871Y CN2583871Y CN 02258572 CN02258572U CN2583871Y CN 2583871 Y CN2583871 Y CN 2583871Y CN 02258572 CN02258572 CN 02258572 CN 02258572 U CN02258572 U CN 02258572U CN 2583871 Y CN2583871 Y CN 2583871Y
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- CN
- China
- Prior art keywords
- rotor
- rotating shaft
- stator
- brushless
- housing
- 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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Abstract
The utility model relates to a DC motor without a brush which can simplify production process, which comprises a casing, wherein, a stator and a rotor are arranged in the casing, and the rotor is arranged in the stator; a Hall circuit board is fixed on an insulating frame of the stator, the rotor is composed of a rotating shaft and a plurality of plastic magnetic rings fixed on the rotating shaft, wherein, a front bearing and a rear bearing are arranged between the rotating shaft and the casing. The rotor of the utility model is formed by one-time injection molding of the plastic magnetic rings and the rotating shaft, one-time injection molding is adopted to form stator iron insulation, and enamelled wires are directly wound on iron core teeth by a full automatic coil winding machine which is adopted by an armature winding. In this way, the utility model has the advantages of simple production process, stable quality and low cost.
Description
Technical field
The utility model relates to a kind of inner-rotor brushless DC motor.
Background technology
The inner-rotor brushless DC motor has obtained to use extremely widely at present, and the rotor of inner-rotor brushless DC motor is a permanent magnet of being made certain number of pole-pairs by permanent magnetic material, and armature winding is fixed in the stator coring groove, adopts heterogeneous symmetric winding.Power to the motor stator winding via switching circuit by DC power supply, the motor rotor position sensor also provides signal to go power switch component in the trigger switch circuit to make it conducting or ends, each is switched on one by one mutually and produces electric current, interact with the rotor magnetic pole main field, produce torque, thus the rotation of control motor.The production technology of inner-rotor brushless DC motor is by traditional handicraft, rotor is taked to paste in the groove of tile shape magnet steel or magnet steel insertion rotor core at the rotor core outer surface, stator core insulation adopts insulating paper, production technology is trouble, and permanent magnetic material generally adopts ferrite, than great circle cylindricality ferrite multi-pole magnet-ring fragility, easily splits, size can't guarantee, influences the qualification rate of rotor.
The utility model content
The purpose of this utility model is to propose a kind of brushless DC motor that can simplify production technology.
The utlity model has housing, be provided with stator and rotor in the housing, rotor places in the stator, the Hall circuit plate is fixed on the insulating support of stator, for achieving the above object, adopt rotor to form by rotating shaft and the multipole plastics magnet ring that is fixed in the rotating shaft, be provided with forward and backward bearing between rotating shaft and housing.
The multipole plastics magnet ring of above-mentioned rotor is that injection molded forms through magnetizing, rotating shaft and multipole plastics magnet ring be connected in injection moulding process, finish bonding.
The core insulating tube of said stator is an injection molded layers.
Above-mentioned housing is made up of front end housing and rear end cap, and the binding end of forward and backward end cap respectively is provided with mount pad, and the connection between the forward and backward end cap connects by mount pad.
The above-mentioned outside that is in the fore bearing of rotating shaft external part is provided with wave washer and back-up ring.
The openend of above-mentioned front end housing is provided with waterproof cover.
Above-mentioned mount pad is provided with beam.
Rotor of the present utility model is once injection molded by magnetic plastic ring and rotating shaft, stator core insulation adopts an injection moulding to form, armature winding take fully automatic wire winding machine with enamelled wire directly on iron core teeth, so the utlity model has that production technology is simple, steady quality and the low advantage of cost.
Description of drawings
Fig. 1 is the utility model configuration diagram;
Fig. 2 is an insulation iron core diagrammatic sketch.
Embodiment
The accompanying drawing illustrated embodiment has housing 1, and housing 1 is made up of front end housing 1-1 and rear end cap 1-2, and the binding end of forward and backward end cap 1-1,1-2 respectively is provided with the mount pad 8 of one.Connection between forward and backward end cap 1-1, the 1-2 is by being threaded between the mount pad 8.Be provided with stator 3 and rotor 2 in the housing 1, rotor 2 places in the stator 3, has air gap between rotor and the stator.Stator 3 is made up of iron core 3-1, insulation framework 3-2 and armature winding, and stator core 3-1 insulating barrier is injection molded layers 3-1-1, adopts an injection moulding to form.Hall circuit plate 5 is fixed on the insulating support 3-2 of stator 3, Hall element 6 is installed in Hall circuit plate 5 and is on the circumferential position of rotor 2, rotor 2 is made up of rotating shaft 2-1 and the plastics magnet ring 2-2 that is fixed on the rotating shaft 2-1, making plastics magnet rings (plate) is a kind of public technology, multipole plastics magnet ring 2-2 is that injection molded forms through magnetizing, and rotating shaft 2-1 and multipole plastics magnet ring 2-2 are connected to finish bonding in injection moulding process.Be provided with forward and backward bearing 9,4 between rotating shaft 2-1 and forward and backward end cap 1-1,1-2, rotating shaft 2 is stretched out from the opening of front end housing 1-1, is provided with wave washer 10 and back-up ring 12 in the outside of fore bearing 9, is provided with waterproof cover 11 at the openend of front end housing 1.Mount pad 8 is provided with beam 7, and beam 7 is provided with bolt hole.The utility model is applied in the convertible frequency air-conditioner, makes air-conditioning be achieved thermostatic control.
Claims (7)
1, a kind of brushless DC motor, has housing (1), be provided with stator (3) and rotor (2) in the housing (1), rotor (2) places in the stator (3), Hall circuit plate (5) is fixed on the insulating support (3-2) of stator (3), it is characterized in that: rotor (2) is made up of rotating shaft (2-1) and the multipole plastics magnet ring (2-2) that is fixed in the rotating shaft, is provided with forward and backward bearing (9,4) between rotating shaft (2-1) and housing.
2, brushless DC motor according to claim 1, it is characterized in that: the multipole plastics magnet ring (2-2) of rotor (2) is that injection molded forms through magnetizing, rotating shaft (2-1) and multipole plastics magnet ring (2-2) be connected in injection moulding process, finish bonding.
3, brushless DC motor according to claim 2 is characterized in that: iron core (3-1) insulating barrier of stator (3) is injection molded layers (3-1-1).
4, brushless DC motor according to claim 3, it is characterized in that: housing (1) is made up of front end housing (1-1) and rear end cap (1-2), the binding end of forward and backward end cap (1-1,1-2) respectively is provided with mount pad (8), and the connection between the forward and backward end cap (1-1,1-2) connects by mount pad (8).
5, brushless DC motor according to claim 4 is characterized in that: the outside that is in the fore bearing (9) of rotating shaft (2) external part is provided with wave washer (10) and back-up ring (12).
6, brushless DC motor according to claim 5 is characterized in that: the openend of front end housing (1) is provided with waterproof cover (11).
7, brushless DC motor according to claim 6 is characterized in that: mount pad (8) is provided with beam (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02258572 CN2583871Y (en) | 2002-11-14 | 2002-11-14 | Brushless dc motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02258572 CN2583871Y (en) | 2002-11-14 | 2002-11-14 | Brushless dc motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2583871Y true CN2583871Y (en) | 2003-10-29 |
Family
ID=33726269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02258572 Expired - Fee Related CN2583871Y (en) | 2002-11-14 | 2002-11-14 | Brushless dc motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2583871Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621237B (en) * | 2008-06-30 | 2012-07-18 | 依必安派特风机(上海)有限公司 | Brushless DC motor |
| CN110661350A (en) * | 2018-06-29 | 2020-01-07 | 日本电产株式会社 | Motor with a stator having a stator core |
| CN110932482A (en) * | 2019-12-19 | 2020-03-27 | 南京南微电机有限公司 | Brushless DC motor with embedded Hall circuit board |
-
2002
- 2002-11-14 CN CN 02258572 patent/CN2583871Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621237B (en) * | 2008-06-30 | 2012-07-18 | 依必安派特风机(上海)有限公司 | Brushless DC motor |
| CN110661350A (en) * | 2018-06-29 | 2020-01-07 | 日本电产株式会社 | Motor with a stator having a stator core |
| CN110661350B (en) * | 2018-06-29 | 2022-06-28 | 日本电产株式会社 | Motor |
| CN110932482A (en) * | 2019-12-19 | 2020-03-27 | 南京南微电机有限公司 | Brushless DC motor with embedded Hall circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |