CN204967582U - Brush -free dc. motor - Google Patents
Brush -free dc. motor Download PDFInfo
- Publication number
- CN204967582U CN204967582U CN201520559798.3U CN201520559798U CN204967582U CN 204967582 U CN204967582 U CN 204967582U CN 201520559798 U CN201520559798 U CN 201520559798U CN 204967582 U CN204967582 U CN 204967582U
- Authority
- CN
- China
- Prior art keywords
- diameter
- axle
- main shaft
- hole
- brushless
- 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
Links
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model provides a brush -free dc. Motor, includes the main shaft, the main shaft main part comprises the axial region of different diameters, and the first axle part of front portion for having first diameter of main shaft, the second axle part of middle part for having the second diameter of main shaft, the third axial region of rear portion for having the third diameter of main shaft, the second diameter is greater than third diameter and first diameter, and the middle part of the second axle part is equipped with the fourth axial region that the diameter is greater than the second axle part, and stator winding overlaps on the fourth axial region. The utility model discloses processing is simple, and the assembly is simple and convenient, the artifical saving, and production efficiency is high.
Description
Technical field
The utility model relates to electric motors, particularly a kind of brshless DC motor for electric bicycle.
Background technology
The brshless DC motor of existing electric bicycle, be made up of shell, permanent magnet rotor, multipole wound stator and position transducer etc., one end of the main shaft of motor is connecting portion, and the other end is provided with location seat pin, stator seat is by location seat pin and spindle combinations, stator coil is enclosed within stator seat, because the diameter of connecting portion is greater than main shaft, stator coil need be arranged on stator seat, then be connected with main shaft, assemble loaded down with trivial details, processed complex, cost of labor is high.
Utility model content
The purpose of this utility model is the defect overcoming prior art, provides a kind of brushless DC motor, and the processing of this brushless DC motor is simple, and assemble easy, labour saving, production efficiency is high.
The technical scheme realizing the utility model object is: a kind of brushless DC motor, comprise main shaft, spindle main body is made up of the axle portion of different-diameter, the front portion of main shaft is for having the first axle part of the first diameter, the middle part of main shaft is for having the second axle part of Second bobbin diameter, and the rear portion of main shaft is the 3rd axle portion with the 3rd diameter, and Second bobbin diameter is greater than the 3rd diameter and the first diameter, the middle part of the second axle part is provided with the 4th axle portion that diameter is greater than the second axle part, and stator winding is enclosed within the 4th axle portion.
In the utility model, the 4th axle portion of main shaft is as stator seat, and namely stator seat and integrated spindle axis are arranged, and structure is simple, and manufacturing procedure reduces, and the diameter in the axle portion at stator seat two ends is less than stator seat, and stator winding is easy to assembly.
As further improvement of the utility model, the radial direction in described 4th axle portion is provided with the through hole be uniformly distributed along the circumference, and the inside in the second axle part and the 3rd axle portion is provided with axial cable hole, through hole and axial cable hole UNICOM.Existing brushless DC motor connects up outward along main shaft, needs to be fixed, takes up room, and the utility model adopts the inner cabling of main shaft, and rationally distributed, entirety is more attractive in appearance.
As further improvement of the utility model, described through hole circumferentially trisection is arranged, is tilted to extend by the forward direction back lower place, with spindle centerline 50 in 40 degree of angles.Adopt trisection 40 ° of inclined hole cablings, not only assembling is simple, contributes to improving person works's efficiency, and good heat dissipation effect, greatly improves the operating efficiency of motor.
As further improvement of the utility model, described the second axle part front portion is also provided with radial louvre, louvre and described cable hole UNICOM.
As further improvement of the utility model, described 3rd axle portion is provided with external screw thread, and end arranges breach, facilitates outlet.
As further improvement of the utility model, described brushless DC motor also comprises a coupling spindle, and coupling spindle rear portion is with external screw thread, and coupling spindle front portion is axially arranged with the endoporus adapted with described the second axle part diameter, and radial direction is provided with coupling spindle pin-and-hole; The radial direction of described the first axle part is provided with the pin-and-hole corresponding with coupling spindle pin-and-hole, and main shaft is connected by alignment pin with coupling spindle.Main shaft and coupling spindle are arranged respectively, removably connect, and not only facilitate stator winding to install, and facilitate the replacing of stator winding to repair.
As further improvement of the utility model, the transmission mechanism of motor adopts the planetary gear two reduction gear be made up of sun gear, planet carrier and internal gear, external toothing is located on the coupling table that wheel hub inwall extends, the centring ring being close to wheel hub inwall is provided with above external toothing, after having added centring ring, transmission mechanism transmission balances, and vibrate little, noise is low.
The utility model, by the improvement to main axle structure, makes the simple of motor assembling process, not only operating efficiency, and good heat dissipation effect.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 main axle structure schematic diagram;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the B-B cutaway view of Fig. 1;
Fig. 4 is the C-C cutaway view of Fig. 1;
Fig. 5 is the utility model embodiment 1 coupling spindle structural representation;
Fig. 6 is the D-D cutaway view of Fig. 5;
Fig. 7 is the vertical view of the utility model embodiment 1 coupling spindle;
Fig. 8 is the E-E cutaway view of Fig. 5;
Fig. 9 is that the centring ring of the utility model embodiment 1 arranges structural representation.
Embodiment
Be described further below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of brushless DC motor 100, comprise main shaft 10, spindle main body is made up of the axle portion of different-diameter, and the front portion of main shaft 10 is for having the first axle part 11 of the first diameter, and the middle part of main shaft is for having the second axle part 12 of Second bobbin diameter, the rear portion of main shaft is the 3rd axle portion 13 with the 3rd diameter, Second bobbin diameter is greater than the 3rd diameter and the first diameter, and the middle part of the second axle part 12 is provided with the 4th axle portion 14 that diameter is greater than the second axle part 12, and stator winding is enclosed within the 4th axle portion 14.
As shown in Figure 5, the second axle part 12 is provided with the through hole 15 be uniformly distributed along the circumference, and through hole 15 upper end open, in the 4th axle portion 14, is circumferentially arranged in trisection, is tilted to extend by the forward direction back lower place, with spindle centerline 50 in 40 degree of angles.The inside in the second axle part 12 and the 3rd axle portion 13 is provided with the cable hole 17 running through extension vertically, through hole 15 and cable hole 14 UNICOM.
As shown in Figure 4, the second axle 12 front portion is provided with the first radial louvre 16a, circumferentially arranges in trisection, the first louvre 16 and cable hole 14 UNICOM.As shown in Figure 3, the second axle front end is also provided with the second louvre 16b of at least one axis, the second louvre 16b and the first louvre 16a UNICOM.3rd axle portion 13 is provided with external screw thread 19, and end arranges breach 18, facilitates end to connect and inner outlet.
As Fig. 5, shown in 6,7 and 8, brushless DC motor also comprises a coupling spindle 20, and coupling spindle rear portion is with external screw thread 21, and coupling spindle front portion is provided with the endoporus 22 that extension and the first axle part 11 external diameter vertically adapt, and radial direction is provided with coupling spindle pin-and-hole 23a.As shown in Figure 1, the radial direction of the first axle part 11 of main shaft is provided with the pin-and-hole 23b corresponding with coupling spindle pin-and-hole, and main shaft 10 is connected by alignment pin with coupling spindle 20.
The transmission mechanism of motor adopts the planetary gear two reduction gear be made up of sun gear, planet carrier and internal gear.As shown in Figure 9, and external toothing 31 corresponding to internal gear is located on the coupling table 32 that wheel hub 30 inwall extends, and is positioned by the boss 33 on coupling table 32, is provided with the centring ring 34 that external diameter and wheel hub internal diameter adapt on external toothing 31.
Claims (7)
1. a brushless DC motor, comprise main shaft, spindle main body is made up of the axle portion of different-diameter, it is characterized in that, the front portion of main shaft is for having the first axle part of the first diameter, and the middle part of main shaft is for having the second axle part of Second bobbin diameter, the rear portion of main shaft is the 3rd axle portion with the 3rd diameter, Second bobbin diameter is greater than the 3rd diameter and the first diameter, and the middle part of the second axle part is provided with the 4th axle portion that diameter is greater than the second axle part, and stator winding is enclosed within the 4th axle portion.
2. brushless DC motor according to claim 1, is characterized in that, the radial direction in described 4th axle portion is provided with the through hole be uniformly distributed along the circumference, and the inside in the second axle part and the 3rd axle portion is provided with axial cable hole, through hole and axial cable hole UNICOM.
3. brushless DC motor according to claim 2, is characterized in that, described through hole circumferentially trisection is arranged, is tilted to extend by the forward direction back lower place, with spindle centerline 50 in 40 degree of angles.
4. brushless DC motor according to claim 2, is characterized in that, described the second axle part front portion is also provided with radial louvre, louvre and described cable hole UNICOM.
5. brushless DC motor according to claim 1, is characterized in that, described 3rd axle portion is provided with external screw thread, and end is provided with breach.
6. brushless DC motor according to claim 1, is characterized in that, also comprises a coupling spindle, and coupling spindle rear portion is with external screw thread, and coupling spindle front portion is axially arranged with the endoporus adapted with described the second axle part diameter, and radial direction is provided with coupling spindle pin-and-hole; The radial direction of described the first axle part is provided with the pin-and-hole corresponding with coupling spindle pin-and-hole, and main shaft is connected by alignment pin with coupling spindle.
7. brushless DC motor according to claim 1, it is characterized in that, the transmission mechanism of motor adopts the planetary gear two reduction gear be made up of sun gear, planet carrier and internal gear, external toothing is located on the coupling table that wheel hub inwall extends, and is provided with the centring ring being close to wheel hub inwall above external toothing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520559798.3U CN204967582U (en) | 2015-07-29 | 2015-07-29 | Brush -free dc. motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520559798.3U CN204967582U (en) | 2015-07-29 | 2015-07-29 | Brush -free dc. motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204967582U true CN204967582U (en) | 2016-01-13 |
Family
ID=55062622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520559798.3U Expired - Fee Related CN204967582U (en) | 2015-07-29 | 2015-07-29 | Brush -free dc. motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204967582U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006937A (en) * | 2015-07-29 | 2015-10-28 | 江苏飞马动力科技有限公司 | Brushless direct current motor |
-
2015
- 2015-07-29 CN CN201520559798.3U patent/CN204967582U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006937A (en) * | 2015-07-29 | 2015-10-28 | 江苏飞马动力科技有限公司 | Brushless direct current motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203883613U (en) | Planet deceleration wheel hub motor | |
| CN105375683B (en) | Ultrathin wheel shaft type wheel hub motor | |
| CN104753244B (en) | Electric bicycle compact wheel hub motor | |
| CN204967582U (en) | Brush -free dc. motor | |
| CN204993008U (en) | Brushless DC motor main shaft | |
| CN105006937A (en) | Brushless direct current motor | |
| CN203209734U (en) | Tyre expanding device for manufacturing spigot of motor shell | |
| CN203554082U (en) | High-strength splicing-type motor stator | |
| CN204967583U (en) | Brushless DC motor installs axle | |
| CN203562881U (en) | Secondary-transmission brushless motor assembly | |
| CN212625181U (en) | Iron core winding machine | |
| CN204290556U (en) | A kind of plastic packaging motor for outdoor fan of air-conditioner | |
| CN203747597U (en) | Planetary gear wire incoming mechanism | |
| CN204442086U (en) | Electric bicycle compact wheel hub motor | |
| CN203562883U (en) | Three-stage deceleration brushless motor casing assembly | |
| CN208423972U (en) | A kind of outer rotor and its hub motor | |
| CN202282687U (en) | Double-head output tubular motor | |
| CN209228650U (en) | A kind of integral type centrifugal compressor | |
| CN204954860U (en) | Robot joint bearing speed reducer | |
| CN203333751U (en) | Multi-specification workpiece rotating mechanism for vacuum coating machine | |
| CN206389206U (en) | A kind of large-scale magneto for being conveniently replaceable bearing | |
| CN204271791U (en) | A kind of foundation mass based on brushless electric machine | |
| CN203491837U (en) | Modified structure of housing of industrial fan | |
| CN206987604U (en) | The reducing motor output shaft of automobile power back door strut and screw mandrel linkage structure | |
| CN204992926U (en) | A motor structure for dust catcher round brush |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20160729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |