CN203775001U - Direct current brushless motor - Google Patents
Direct current brushless motor Download PDFInfo
- Publication number
- CN203775001U CN203775001U CN201420166060.6U CN201420166060U CN203775001U CN 203775001 U CN203775001 U CN 203775001U CN 201420166060 U CN201420166060 U CN 201420166060U CN 203775001 U CN203775001 U CN 203775001U
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- China
- Prior art keywords
- stator
- brushless motor
- magnet steel
- rotor
- disc
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- Expired - Fee Related
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to a direct current brushless motor, and in particular relates to the direct current brushless motor which is applied to a lithium lawn mower. The direct current brushless motor comprises a casing, a rotor and a stator, wherein the rotor and the stator are arranged in the casing. The rotor comprises a number of rotor punching sheets (3), a rotating shaft (4) which is used for supporting the rotor punching sheets, a number of steel magnets (5) close to the outer circumference of the rotor punching sheets, and a magnet sleeve (6) which is used for fixing a number of steel magnets (5) to prevent the steel magnets (5) from falling off due to high speed rotation. A number of steel magnets (5) are connected with each other to form a steel magnet ring. The magnetisms of adjacent steel magnets (5) are opposite. 9 stator slots (1) which are wound by enameled wires are uniformly arranged on the inner circumference of a stator iron core. 6 steel magnets (5) are arranged. The direct current brushless motor has the advantages of high work efficiency, high work quality and low cost.
Description
Technical field
The utility model relates to DC brushless motor, relates in particular to a kind of DC brushless motor for lithium electricity hay mover.
Background technology
The motor of lithium electricity hay mover in the market adopts series excited machine mostly, such motor shortcoming is that volume is large, life-span short (using brush and commutator), efficiency low (40 ~ 60%), also having some is to adopt DC brushless motor, but prior art is used the DC brushless motor on lithium electricity hay mover conventionally to use 8 utmost point 12 grooves or 10 utmost point 12 grooves, be formed by 8 magnet steel in rotor outer circle week and stator core have 12 for copper cash be wound around stator slots, or rotor outer circle week is made up of 10 magnet steel and stator core has 12 stator slots that are wound around for copper cash, arrange like this and can serve problem by band:
1,, after slot number number increases, can make the frequency that magnetic field N S changes increase, thus iron loss increase, heating increases, and Efficiency Decreasing is that lithium battery provides power supply because of what use, and the reduction of efficiency is shortened the power-on time of lithium battery, affects work quality;
2, the computing capability that slot number number increases the rear peripheral circuit (controller) that simultaneously makes brushless electric machine also will improve, and exploitation, cost control to controller all increase difficulty.
Summary of the invention
Technical problem to be solved in the utility model is: provide that a kind of operating efficiency is higher, work quality is higher and lower-cost DC brushless motor.
The technical scheme that the utility model adopts is: a kind of DC brushless motor, comprise shell, rotor and stator are in the enclosure set, described stator comprises stator core and is wrapped in the enamelled wire in the stator slot on stator core, described enamelled wire is wrapped in the stator slot of stator core by Y type or Δ type winding mode, described rotor comprises multi-disc rotor punching, for the rotating shaft of support rotor punching, be close to the multi-disc magnet steel on rotor punching excircle and prevent for fixing multi-disc magnet steel the magnetosheath that magnet steel comes off because of high speed rotating, described multi-disc magnet steel is interconnected to form a magnetic steel ring, described adjacent magnet steel magnetic is contrary, on described stator core inner periphery, be on average provided with 9 stator slots that are wound around for enamelled wire, described magnet steel is 6.
Adopt above structure compared with prior art, the utlity model has following advantage: change 12 original stator slots into 9, and original 8 magnet steel and 10 magnet steel change 6 into, so not only reduce the frequency that magnetic field N S changes, reduced caloric value, reduced efficiency, and then reduce the consumption of battery, improve power-on time, and reduced the computing capability of brushless electric machine peripheral circuit, reduced the cost of controller exploitation.
As preferably, described magnetosheath has 2, and described 2 magnetosheaths block respectively the two ends of the magnetic steel ring of pushing down multi-disc magnet steel composition.Like this can be by magnetic steel ring card more firm, be not easy to come off.As preferably, described stator core comprises multi-disc stator punching, on described every stator punching, is equipped with hasp, and the hasp of every two adjacent stator punchings is snapping mutually.Assembling stator so easily, efficiency of assembling is higher, and Product Precision is also higher.
As preferably, in described stator slot, be provided with the insulating paper of being made by polyester fiber non-woven fabric polyester film compound material, and described insulating paper skin is also provided with the insulating barrier that one deck is made up of polyester film material.Adopt polyester fiber non-woven fabric polyester film compound material to make insulating paper, can effectively prevent that insulating paper from being cut by the edge of a knife on stator slot bad, and add a layer insulating in insulating paper outside again, the insulation effect of insulating paper is better like this.
Brief description of the drawings
Fig. 1 is the explosive view of the rotor of the utility model DC brushless motor.
Fig. 2 is the rotor structure schematic diagram of the utility model DC brushless motor.
Fig. 3 is the stator structure schematic diagram of the utility model DC brushless motor.
As shown in the figure: 1, stator slot; 2, enamelled wire; 3, rotor punching; 4, rotating shaft; 5, magnet steel; 6, magnetosheath; 7, hasp.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further, but the utility model is not limited only to following embodiment.
As shown in the figure: a kind of DC brushless motor, comprise shell, rotor and stator are in the enclosure set, described stator comprises stator core and is wrapped in the enamelled wire 2 in the stator slot 1 on stator core, described enamelled wire 2 is wrapped in the stator slot 1 of stator core by Y type or Δ type winding mode, described rotor comprises multi-disc rotor punching 3, for the rotating shaft 4 of support rotor punching, be close to the multi-disc magnet steel 5 on rotor punching excircle and prevent for fixing multi-disc magnet steel 5 magnetosheath 6 that magnet steel 5 comes off because of high speed rotating, described multi-disc magnet steel 5 is interconnected to form a magnetic steel ring, described adjacent magnet steel 5 magnetic are contrary, on described stator core inner periphery, be on average provided with 9 stator slots 1 that are wound around for enamelled wire 2, described magnet steel 5 is 6.
Described magnetosheath 6 has 2, and described 2 magnetosheaths 6 block respectively the two ends of pushing down the magnetic steel ring that multi-disc magnet steel 5 forms.
Described stator core comprises multi-disc stator punching, on described every stator punching, is equipped with hasp 7, the hasp 7 of every two adjacent stator punchings snapping mutually.
In described stator slot 1, be provided with the insulating paper of being made by polyester fiber non-woven fabric polyester film compound material, and described insulating paper skin is also provided with the insulating barrier that one deck is made up of polyester film material.
Claims (4)
1. a DC brushless motor, comprise shell, rotor and stator are in the enclosure set, described stator comprises stator core and is wrapped in the enamelled wire (2) in the stator slot (1) on stator core, described enamelled wire (2) is wrapped in by Y type or Δ type winding mode in the stator slot (1) of stator core, described rotor comprises multi-disc rotor punching (3), for the rotating shaft (4) of support rotor punching, be close to the multi-disc magnet steel (5) on rotor punching excircle and prevent for fixing multi-disc magnet steel (5) magnetosheath (6) that magnet steel (5) comes off because of high speed rotating, described multi-disc magnet steel (5) is interconnected to form a magnetic steel ring, described adjacent magnet steel (5) magnetic is contrary, it is characterized in that: on described stator core inner periphery, be on average provided with 9 stator slots (1) that are wound around for enamelled wire (2), described magnet steel (5) is 6.
2. DC brushless motor according to claim 1, is characterized in that: described magnetosheath (6) has 2, and described 2 magnetosheaths (6) block respectively the two ends of the magnetic steel ring of pushing down multi-disc magnet steel (5) composition.
3. DC brushless motor according to claim 1, is characterized in that: described stator core comprises multi-disc stator punching, is equipped with hasp (7) on described every stator punching, hasp (7) snapping mutually of every two adjacent stator punchings.
4. DC brushless motor according to claim 1, it is characterized in that: described stator slot is provided with the insulating paper of being made up of polyester fiber non-woven fabric polyester film compound material in (1), and described insulating paper skin is also provided with the insulating barrier that one deck is made up of polyester film material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166060.6U CN203775001U (en) | 2014-04-08 | 2014-04-08 | Direct current brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166060.6U CN203775001U (en) | 2014-04-08 | 2014-04-08 | Direct current brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203775001U true CN203775001U (en) | 2014-08-13 |
Family
ID=51292149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420166060.6U Expired - Fee Related CN203775001U (en) | 2014-04-08 | 2014-04-08 | Direct current brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203775001U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883023A (en) * | 2014-11-26 | 2015-09-02 | 广东美的环境电器制造有限公司 | DC brushless motor |
-
2014
- 2014-04-08 CN CN201420166060.6U patent/CN203775001U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883023A (en) * | 2014-11-26 | 2015-09-02 | 广东美的环境电器制造有限公司 | DC brushless motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160707 Address after: 315500, Yunfeng Road, 35 East Suburb Development Zone, Ningbo City, Zhejiang, Fenghua Patentee after: NINGBO JINHONGSHENG ELECTROMECHANICAL TECHNOLOGY CO.,LTD. Address before: 315500, Longtan Road, Longtan Village, Fenghua, Zhejiang, Ningbo 398, China Patentee before: NINGBO ANCHUAN DADAO ELECTRICAL TECHNOLOGY CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |