CN203481951U - Magnetic steel ring structure of direct-current brushless motor - Google Patents
Magnetic steel ring structure of direct-current brushless motor Download PDFInfo
- Publication number
- CN203481951U CN203481951U CN201320590083.5U CN201320590083U CN203481951U CN 203481951 U CN203481951 U CN 203481951U CN 201320590083 U CN201320590083 U CN 201320590083U CN 203481951 U CN203481951 U CN 203481951U
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- Prior art keywords
- magnetic steel
- steel ring
- brushless motor
- ring structure
- direct
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Abstract
The utility model discloses a magnetic steel ring structure of a direct-current brushless motor. The magnetic steel ring structure comprises a rotor, a magnetic steel ring and magnetic steel sheets, wherein the magnetic steel ring is fixedly arranged inside the rotor; the magnetic steel ring is internally provided with more than one boss; and the magnetic steel sheets are arranged among the bosses inside the magnetic steel ring in an interval-pasting mode. Compared with the prior art, the magnetic steel ring structure of the direct-current brushless motor has the advantages that the inner diameter precision of the magnetic steel ring of the direct-current brushless motor is effectively improved, a full magnetic steel pasting mode is replaced by the interval pasting mode, and the material cost of the motor is reduced.
Description
Technical field
The utility model discloses a kind of DC brushless motor, particularly a kind of DC brushless motor magnetic steel ring structure.
Background technology
Magnet steel process program is completely pasted in the main employing of electric vehicle motor, because the price of magnet steel is high, motor cost is high, and in order to reduce costs, motor manufacturer will completely paste magnet steel mode and paste magnet steel mode between changing into, to reduce magnet steel consumption, what adopt at present adds process program in powder metallurgy mode, and iron ring cold extrusion mode is main, and after existing mode is shaped, deflection is large, after being pressed into rotor, magnetic steel ring internal diameter also can change, and is difficult to meet design requirement.
Summary of the invention
Restriction for the above-mentioned DC brushless motor of the prior art of mentioning due to magnetic steel ring structure, make it can only adopt the mode of full subsides magnet steel to process, cause the shortcoming that cost is higher, the utility model provides a kind of new DC brushless motor magnetic steel ring, it adopts special structural design, make magnet steel paste structure between can realizing on magnetic steel ring, reduced cost.
The technical scheme that the utility model solves its technical problem employing is: a kind of DC brushless motor magnetic steel ring structure, magnetic steel ring structure comprises rotor, magnetic steel ring and magnetic links, magnetic steel ring is fixedly installed in rotor, magnetic steel ring inside is provided with more than one boss, and between magnetic links adopts, subsides form is arranged between the boss of magnetic steel ring inside.
The technical scheme that the utility model solves its technical problem employing further comprises:
Described boss is provided with two rows.
Described boss is uniformly distributed ringwise in magnetic steel ring inside.
Described magnetic steel ring is welded on internal rotor.
The beneficial effects of the utility model are: compare with conventional art, the utility model technology has improved brshless DC motor magnetic steel ring internal diameter precision effectively, and a subsides magnet steel mode replaces full subsides magnet steel mode, reduces the material cost of motor.
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 is the utility model perspective view.
In figure, 1-rotor, 2-magnetic steel ring, 3-boss.
Embodiment
The present embodiment is the utility model preferred implementation, and other all its principles are identical with the present embodiment or approximate with basic structure, all within the utility model protection range.
Please refer to accompanying drawing 1, the utility model mainly comprises rotor 1, magnetic steel ring 2 and magnet steel (not shown in FIG.), in the present embodiment, magnetic steel ring 2 is welded on rotor 1 inside, in magnetic steel ring 2, be provided with boss 3, in the present embodiment, boss 3 is provided with two rows, two row's boss 3 are evenly arranged ringwise in magnetic steel ring 2, and the groove between adjacent two boss 3 is the position of mounting magnetic steel, and magnet steel is mounted between adjacent boss 3, its adopt between subsides form, subsides form between adjacent two magnet steel form, magnet steel consumption reduces, motor material cost.
The utility model during fabrication, mainly comprises following several step:
1, magnetic steel ring 2 is welded in rotor 1;
2, the inner circle of magnetic steel ring 2 is processed three road grooves with Digit Control Machine Tool, groove is along the interior circular direction of magnetic steel ring 2, the diameter of groove is designed magnetic steel ring internal diameter, the internal diameter of magnetic steel ring 2 is determined by the external diameter of broaching cutters, the external diameter of cutter is processed by Digit Control Machine Tool, can be controlled in very high accuracy rating, it is directly broaching on magnetic steel ring 2, reduced and press-fited the change in diameter that process causes, meet the designing requirement of magnetic steel ring internal diameter completely. make the air gap of motor even, make to reduce air gap, in a subsides magnet steel mode, replace full magnet steel mode to become possibility, thereby improve the performance of motor, reduce the cost of motor,
3, finally with broaching tool, the groove that pastes magnet steel is broached out,
The magnetic steel ring internal diameter precision of the utility model processing is high, makes the air gap of DC brushless motor even, pastes magnet steel mode and can replace completely pasting magnet steel mode between making, and has reduced the consumption of magnet steel, thereby has reduced the material cost of motor.
Compare with conventional art, the utility model technology has improved brshless DC motor magnetic steel ring internal diameter precision effectively, and a subsides magnet steel mode replaces full subsides magnet steel mode, reduces the material cost of motor.
Claims (4)
1. a DC brushless motor magnetic steel ring structure, it is characterized in that: described magnetic steel ring structure comprises rotor, magnetic steel ring and magnetic links, magnetic steel ring is fixedly installed in rotor, and magnetic steel ring inside is provided with more than one boss, and between magnetic links adopts, subsides form is arranged between the boss of magnetic steel ring inside.
2. DC brushless motor magnetic steel ring structure according to claim 1, is characterized in that: described boss is provided with two rows.
3. DC brushless motor magnetic steel ring structure according to claim 1, is characterized in that: described boss is uniformly distributed ringwise in magnetic steel ring inside.
4. according to the DC brushless motor magnetic steel ring structure described in claim 1 or 2 or 3, it is characterized in that: described magnetic steel ring is welded on internal rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590083.5U CN203481951U (en) | 2013-09-24 | 2013-09-24 | Magnetic steel ring structure of direct-current brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590083.5U CN203481951U (en) | 2013-09-24 | 2013-09-24 | Magnetic steel ring structure of direct-current brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203481951U true CN203481951U (en) | 2014-03-12 |
Family
ID=50230204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320590083.5U Expired - Lifetime CN203481951U (en) | 2013-09-24 | 2013-09-24 | Magnetic steel ring structure of direct-current brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203481951U (en) |
-
2013
- 2013-09-24 CN CN201320590083.5U patent/CN203481951U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |