CN202918158U - Permanent magnet synchronous motor rotor structure - Google Patents
Permanent magnet synchronous motor rotor structure Download PDFInfo
- Publication number
- CN202918158U CN202918158U CN 201220595071 CN201220595071U CN202918158U CN 202918158 U CN202918158 U CN 202918158U CN 201220595071 CN201220595071 CN 201220595071 CN 201220595071 U CN201220595071 U CN 201220595071U CN 202918158 U CN202918158 U CN 202918158U
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- CN
- China
- Prior art keywords
- rotor core
- fastening screw
- synchronous motor
- axle sleeve
- rotor
- 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 provides a permanent magnet synchronous motor rotor structure, comprising an axle sleeve and a rotor core sleeved on the axle sleeve; the rotor core is formed by a plurality of laminated punching sheets; the rotor core possesses an assembling hole parallel with an axial direction of the axle sleeve; a fastening screw rod fixedly traverses the assembling hole; an outer circumferential surface of the fastening screw rod is sleeved by an insulating tube; two ends of the fastening screw rod are respectively exposed to the outside of two end parts of the rotor core; two ends of the fastening screw rod are respectively in connection with a locking screw through threads. An insulation washer and a metal washer are respectively arranged from a surface of the rotator core to the outside between the locking screw and the rotator core. Compared with prior arts, the permanent magnet synchronous motor rotor structure guarantees formation of a rotator, reduces motor manufacture difficulty and manufacture costs, avoids influence for motor work efficiency caused by formation of induced-current and reduces motor work loss.
Description
Technical field
The utility model relates to and a kind ofly prevents from forming faradic rotor structure for rare-earth permanent-magnet synchronous motor.
Background technology
The starting torque of permagnetic synchronous motor and overload capacity all exceed a power grade than threephase asynchronous, and maximum starting torque can reach 3.6 times with the ratio of rated moment, and general asynchronous motor only has 1.6 times.Permagnetic synchronous motor is compared with cage induction motor, have energy-efficient, volume is little, lightweight, the plurality of advantages such as efficient is high, therefore, permagnetic synchronous motor obtains more and more extensive use in recent years in every field.
In the prior art, asynchronous machine adopts the cage rotor of cast aluminium shape more, and permagnetic synchronous motor is not because there being the cage rotor of cast aluminium shape, so that rotor is difficult to fixing the shaping, motor manufacture difficulty and manufacturing cost are higher, and easily form induced current in the rotor structure during machine operation and affect the operating efficiency of motor, further development and the application of permagnetic synchronous motor caused certain limitation.
Summary of the invention
In order to overcome the defective of prior art, the purpose of this utility model provides a kind of rotor structure of permagnetic synchronous motor, this rotor structure both can guarantee the formation of rotor, reduce motor manufacture difficulty and manufacturing cost, also can prevent simultaneously rotor from forming induced current and affect the operating efficiency of motor, reduce working loss.
For achieving the above object, the utility model provides a kind of rotor structure of permagnetic synchronous motor, it comprises axle sleeve and the rotor core that is sheathed on the described axle sleeve, it is characterized in that: described rotor core is overrided to form by a plurality of punchings, has the pilot hole with the axially parallel of described axle sleeve on the described rotor core, fixedly be equipped with fastening screw in the described pilot hole, be arranged with insulated tube on the outer circumference surface of described fastening screw, the outside at the both ends of described rotor core is exposed respectively at the two ends of described fastening screw, described fastening screw two ends be threaded connection respectively locking nut, the surface from described rotor core between described locking nut and the described rotor core outwards is provided with insulating washer and metal washer successively.
Preferably, described punching is silicon steel sheet.
Preferably, described insulating washer comprises compound inslation paper washer and glass-cloth board packing ring.More preferably, cause described insulating washer damaged and affect insulating properties in order to prevent rotor when assembling, the integral thickness of described insulating washer is greater than or equals 0.5mm.
The rotor structure of the permagnetic synchronous motor that the utility model provides had both guaranteed the formation of rotor, it is simple in structure, manufacture difficulty and the manufacturing cost of motor have been reduced, and the described insulated tube in this kind rotor structure and described insulating washer can be eliminated the short circuit current ring that described standing screw and described rotor core may consist of, thereby the operating efficiency that makes rotor structure of the present utility model can prevent from forming induced current and affect motor has reduced the working loss of motor.
Description of drawings
Fig. 1 is the generalized section of the rotor structure of the utility model permagnetic synchronous motor.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
See also Fig. 1, the utility model provides a kind of rotor structure of permagnetic synchronous motor, it comprises axle sleeve 10 and the rotor core 20 that is sheathed on the described axle sleeve 10, described rotor core 20 is overrided to form by a plurality of punchings, has the pilot hole with the axially parallel of described axle sleeve 10 on the described rotor core 20, fixedly be equipped with fastening screw 30 in the described pilot hole, be arranged with insulated tube 31 on the outer circumference surface of described fastening screw 30, the outside at the both ends of described rotor core 20 is exposed respectively at the two ends of described fastening screw 30, described fastening screw 30 two ends be threaded connection respectively locking nut 40, surface from described rotor core 20 between described locking nut 40 and the described rotor core 20 outwards is provided with insulating washer 60 and metal washer 62 successively, and described insulating washer 60 comprises compound inslation paper washer 61 and glass-cloth board packing ring 62.
In present embodiment, described punching is silicon steel sheet.In order to prevent that rotor when assembling from causing described insulating washer 60 damaged and affect insulating properties, the integral thickness of described insulating washer 60 is greater than or equals 0.5mm.Described insulating washer 60 can adopt different thickness according to the difference of insulation material, reaching best integral thickness, thereby possesses the damage of insulating washer during insulation property can be avoided again assembling simultaneously preferably.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage who is familiar with technique can understand content of the present utility model and according to this enforcement; can not limit protection range of the present utility model with this; all equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed within the protection range of the present utility model.
Claims (4)
1. the rotor structure of a permagnetic synchronous motor, it comprises axle sleeve and the rotor core that is sheathed on the described axle sleeve, it is characterized in that: described rotor core is overrided to form by a plurality of punchings, has the pilot hole with the axially parallel of described axle sleeve on the described rotor core, fixedly be equipped with fastening screw in the described pilot hole, be arranged with insulated tube on the outer circumference surface of described fastening screw, the outside at the both ends of described rotor core is exposed respectively at the two ends of described fastening screw, described fastening screw two ends be threaded connection respectively locking nut, the surface from described rotor core between described locking nut and the described rotor core outwards is provided with insulating washer and metal washer successively.
2. the rotor structure of permagnetic synchronous motor according to claim 1, it is characterized in that: described punching is silicon steel sheet.
3. the rotor structure of permagnetic synchronous motor according to claim 1, it is characterized in that: described insulating washer comprises compound inslation paper washer and glass-cloth board packing ring.
4. the rotor structure of permagnetic synchronous motor according to claim 3, it is characterized in that: the integral thickness of described insulating washer is greater than or equal to 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595071 CN202918158U (en) | 2012-11-13 | 2012-11-13 | Permanent magnet synchronous motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595071 CN202918158U (en) | 2012-11-13 | 2012-11-13 | Permanent magnet synchronous motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202918158U true CN202918158U (en) | 2013-05-01 |
Family
ID=48166434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220595071 Expired - Fee Related CN202918158U (en) | 2012-11-13 | 2012-11-13 | Permanent magnet synchronous motor rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202918158U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916545A (en) * | 2012-11-13 | 2013-02-06 | 苏州贝得科技有限公司 | Rotor structure of permanent magnet synchronous motor |
-
2012
- 2012-11-13 CN CN 201220595071 patent/CN202918158U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916545A (en) * | 2012-11-13 | 2013-02-06 | 苏州贝得科技有限公司 | Rotor structure of permanent magnet synchronous motor |
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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: 20130501 Termination date: 20211113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |