CN102386727A - Structure of corner on punching sheet of motor rotor - Google Patents
Structure of corner on punching sheet of motor rotor Download PDFInfo
- Publication number
- CN102386727A CN102386727A CN2011103606594A CN201110360659A CN102386727A CN 102386727 A CN102386727 A CN 102386727A CN 2011103606594 A CN2011103606594 A CN 2011103606594A CN 201110360659 A CN201110360659 A CN 201110360659A CN 102386727 A CN102386727 A CN 102386727A
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- Prior art keywords
- punching
- notches
- rotor
- corner
- motor
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to a structure of a corner on a punching sheet of a motor rotor and adopts the scheme that a plurality of hole slots are formed on a slotted punching sheet; notches are formed at corresponding corners of the hole slots; after the hole slots are overlapped correspondingly, permanent magnets are inserted in the hole slots of a plurality of layers of punching sheets; and after the punching sheets are overlapped, notches at the corners of the punching sheets are filled with cast aluminum. The two sides of the notches are parallel to the side surfaces of the permanent magnets; under the premise of ensuring the mechanical strength, the shorter the distances between the two sides of the notches and the side surfaces of the permanent magnets are, the better the effect is, and the specific value of the distances is determined by the size of a motor; and before two notch sides are connected with the arc-shaped sides of the punching sheets, concave parts are arranged respectively, so as to ensure that aluminum strips cast on the notches of the corners can be blocked by the concave parts to be prevented from being thrown away due to centrifugal force when the motor rotor rotates at high speed. The structure has the benefits that the permanent magnets are sealed inside the punching sheets of the rotor, so that the penetrativity of the magnetic lines of force can be the best, and the efficiency of the motor is greatly improved.
Description
Technical field
The present invention relates to field of motor manufacturing, relate 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: be provided with several hole slot in the groove punching having, have breach in the corresponding corner of hole slot, corresponding superimposed after, in the punching hole slot of multilayer build-up, insert permanent magnet; After punching is superimposed, mend the corner indentation, there of punching full with cast aluminium;
The punching corner structure of rotor, the both sides of its breach are parallel to the permanent magnet side, and under the prerequisite that guarantees mechanical strength, both distances are short more good more, and concrete numerical value is different with motor size; Before two breach limits and punching circular arc limit join, be provided with recess respectively, at the aluminum strip of corner breach top casting, when the rotor high speed rotating, receive stopping of recess and can not thrown away after guaranteeing by centrifugal force.
Benefit of the present invention is to be closed in the inner permanent magnet of rotor punching, and the penetration performance performance of its magnetic line of force is best, 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 permanent magnet hole slot, 2 breach limits, 3 recesses.
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 recesses 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 recess 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 above is merely one embodiment of the present of invention, 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, have breach in the corresponding corner of hole slot, corresponding superimposed after, in the punching hole slot of multilayer build-up, insert permanent magnet; After punching is superimposed, mend the corner indentation, there of punching full with cast aluminium; It is characterized in that: the punching corner structure of rotor, described breach both sides are parallel to the permanent magnet side; Before two breach limits and punching circular arc limit join, be provided with recess respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103606594A CN102386727A (en) | 2011-11-15 | 2011-11-15 | Structure of corner on punching sheet of motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103606594A CN102386727A (en) | 2011-11-15 | 2011-11-15 | Structure of corner on punching sheet of motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102386727A true CN102386727A (en) | 2012-03-21 |
Family
ID=45825814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103606594A Pending CN102386727A (en) | 2011-11-15 | 2011-11-15 | Structure of corner on punching sheet of motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102386727A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058863A (en) * | 1990-07-12 | 1992-02-19 | 精工爱普生股份有限公司 | Rotor of motor having no brush and manufacture method thereof |
| US20100117475A1 (en) * | 2008-11-11 | 2010-05-13 | Ford Global Technologies, Llc | Permanent Magnet Machine with Offset Pole Spacing |
| CN101944788A (en) * | 2010-07-06 | 2011-01-12 | 东元总合科技（杭州）有限公司 | Rotor of high-power permanent magnet motor and permanent magnet synchronous wind-driven generator using same |
-
2011
- 2011-11-15 CN CN2011103606594A patent/CN102386727A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058863A (en) * | 1990-07-12 | 1992-02-19 | 精工爱普生股份有限公司 | Rotor of motor having no brush and manufacture method thereof |
| US20100117475A1 (en) * | 2008-11-11 | 2010-05-13 | Ford Global Technologies, Llc | Permanent Magnet Machine with Offset Pole Spacing |
| CN101944788A (en) * | 2010-07-06 | 2011-01-12 | 东元总合科技（杭州）有限公司 | Rotor of high-power permanent magnet motor and permanent magnet synchronous wind-driven generator using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120321 |