CN202435209U - Punching sheet corner structure of motor rotor - Google Patents
Punching sheet corner structure of motor rotor Download PDFInfo
- Publication number
- CN202435209U CN202435209U CN2011204507017U CN201120450701U CN202435209U CN 202435209 U CN202435209 U CN 202435209U CN 2011204507017 U CN2011204507017 U CN 2011204507017U CN 201120450701 U CN201120450701 U CN 201120450701U CN 202435209 U CN202435209 U CN 202435209U
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- CN
- China
- Prior art keywords
- punching
- rotor
- punching sheet
- permanent magnets
- motor
- 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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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Provided is a punching sheet corner structure of a motor rotor. A punching sheet is provided with a plurality of hole grooves. The side surface of each hole groove, corresponding to the edge of a rotor, is equipped with gaps. After the punching sheet is laminated, permanent magnets are inserted into the hole grooves of the laminated multilayer punching sheets. The corner gaps of the punching sheets are filled up with cast aluminium. The two edges of each gap are parallel to the side surfaces of two adjacent permanent magnets. Under a prerequisite that the mechanical strength is guaranteed, the shorter the distance between the gap and the permanent magnets, the better the effect, and the concrete value of the distance varies along with the size of a motor. U-shaped grooves are respectively arranged adjacent to a connecting position between the two edges of each gap and the arc edge of the punching sheet, thereby preventing aluminium strips cast in the corner gaps later on from being pushed away by centrifugal force due to the block of the grooves when the motor rotor is rotating under a high-speed condition. The beneficial effects of the punching sheet corner structure of a motor rotor are that the failure rate of the permanent magnets enclosed inside the punching sheet of the rotor is minimized, the penetrability of the magnetic line of the permanent magnets is fully utilized, and the efficiency of the motor is substantially increased.
Description
Technical field
The utility model relates to field of motor manufacturing, relates in particular to the punching corner structure of the rotor of magneto.
Background technology
Rotor is the vital part of motor; Different according to rotating speed; On rotor, fixing the multipole permanent magnet of different numbers of poles respectively; The permanent magnet majority of magneto is to be inserted in the rotor surface with the glue adhesion or permanent magnet at present, and permanent magnet is hard crisp solid, easy of crack when collision is fallen in transit; Only between the 0.5-2 millimeter, the slit is more little in slit between rotor and the stator, and electric efficiency is high more.Motor is when high speed rotating, and the permanent magnet of adhesion usually can be thrown away by centrifugal force, perhaps because after running a period of time; Rotor heating, permanent magnet ectonexine excessive temperature differentials, and cracked gradually; As long as there is tiny chip to throw away, is attracted to motor is scrapped.This fault takes place at big motor at a high speed on one's body especially easily, and economic loss is also particularly serious.
In view of this; The inventor furthers investigate rotor; Finally solved puzzlement motor industry this hard nut to crack for many years, be enclosed in permanent magnet in the middle of the rotor core, failure rate significantly reduces; The problem of next deriving is in new construction, how to bring into play the maximal efficiency of rotor, and this case produces thus.
Summary of the invention
The object of the present invention is to provide the punching corner structure of rotor, can bring into play the maximum effect of rotor magnetic line, use the raising efficiency of motor,
To achieve these goals; Technical scheme of the present invention is following: the punching corner structure of rotor, be provided with several hole slot in the groove punching having, and the rotor edge place corresponding in the hole slot side has breach; After punching is superimposed, in the punching hole slot of multilayer build-up, insert permanent magnet; Mend the corner breach of punching full with cast aluminium;
The both sides of breach are parallel to two adjacent permanent magnet sides, and under the prerequisite that guarantees mechanical strength, both distances are short more good more, and concrete numerical value is different with motor size; The close position that joins on two breach limits and punching circular arc limit is provided with the U font groove respectively, at the aluminum strip of corner breach top casting, when the rotor high speed rotating, receives stopping of groove and can not thrown away by centrifugal force after guaranteeing.
Benefit of the present invention is to be closed in the inner permanent magnet of rotor punching, and failure rate significantly reduces, and the penetration performance of its magnetic line of force can be given full play to, and electric efficiency improves greatly.
Description of drawings
Fig. 1 is the stereogram of the punching corner structure of 4 utmost point rotors;
Fig. 2 is the punching corner front view of 4 utmost point rotors;
Fig. 3 is the stereogram of the punching corner structure of 6 utmost point rotors.
Description of reference numerals:
1 hole slot, 2 breach limits, 3 grooves.
Embodiment
Through accompanying drawing and embodiment the present invention is done further to set forth in detail below.
Embodiment 1
A kind of punching shape of 4 utmost point rotors such as Fig. 1 are to shown in Figure 2; 4 hole slots 1 are set to be used in order to insert permanent magnet in the superimposed back of punching; The present invention is provided with the corner breach at per two permanent magnet adjacents, and two breach limits 2 are parallel to the permanent magnet side respectively, under the prerequisite that guarantees mechanical strength; Distance is good more closely more, and concrete numerical value is looked the different size of motor and different; Before breach limit 2 and punching circular arc limit join, also be provided with two grooves 3, design is at the rotor high speed rotating time like this, guarantees that the aluminum strip of in the corner breach, casting can not thrown away by centrifugal force under the stopping of groove 3.
The rotor punching corner of 6 utmost points, 8 utmost points, 10 utmost point motors is also followed the principle design of embodiment 1, and Fig. 3 is the sketch map of 6 utmost point motor rotor punching sheets.
The embodiment that the above is merely the utility model is not the restriction to this case design, and all equivalent variations of doing according to the design key of this case all fall into the protection range of this case.
Claims (1)
1. the punching corner structure of rotor is provided with several hole slot having in the groove punching, the rotor edge place corresponding in the hole slot side has breach, after punching is superimposed, in the punching hole slot of multilayer build-up, inserts permanent magnet; Mend the corner breach of punching full with cast aluminium; It is characterized in that: described breach both sides are parallel to two adjacent permanent magnet sides; The close position that joins on two breach limits and punching circular arc limit is provided with the U font groove respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204507017U CN202435209U (en) | 2011-11-15 | 2011-11-15 | Punching sheet corner structure of motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204507017U CN202435209U (en) | 2011-11-15 | 2011-11-15 | Punching sheet corner structure of motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202435209U true CN202435209U (en) | 2012-09-12 |
Family
ID=46784618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204507017U Expired - Fee Related CN202435209U (en) | 2011-11-15 | 2011-11-15 | Punching sheet corner structure of motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202435209U (en) |
-
2011
- 2011-11-15 CN CN2011204507017U patent/CN202435209U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: PING GUOMIN Free format text: FORMER OWNER: HEJIANG HUAN ASIA ELECTRONICS CO., LTD. Effective date: 20130217 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 312030 SHAOXING, ZHEJIANG PROVINCE TO: 312000 SHAOXING, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130217 Address after: Ye Jia Bao Village 312000 Zhejiang Province, Shaoxing City Hill Street No. 17 Patentee after: Ping Guomin Address before: 312030 H, block -002, Times Square, Keqiao times, Shaoxing County, Zhejiang, Shaoxing Patentee before: hejiang Huan Asia Electronics Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190527 Address after: 215200 Dell Plaza, Shengze Town, Wujiang District, Suzhou City, Jiangsu Province, No. 108, 17 blocks Patentee after: Suzhou National Electronic Technology Co., Ltd. Address before: 312000 No. 17, Yejiabao Village, Fushan Street, Yuecheng District, Shaoxing City, Zhejiang Province Patentee before: Ping Guomin |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20201115 |