CN2720702Y - Permanent-magnet motor rotor adapting composite structure - Google Patents
Permanent-magnet motor rotor adapting composite structure Download PDFInfo
- Publication number
- CN2720702Y CN2720702Y CN 200420060462 CN200420060462U CN2720702Y CN 2720702 Y CN2720702 Y CN 2720702Y CN 200420060462 CN200420060462 CN 200420060462 CN 200420060462 U CN200420060462 U CN 200420060462U CN 2720702 Y CN2720702 Y CN 2720702Y
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- CN
- China
- Prior art keywords
- magnet
- bracing frame
- supporting rack
- permanent magnet
- machine 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 - Lifetime
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides a permanent-magnet motor rotor with low cost and light quality, comprising a magnet and a supporting rack. The supporting rack is formed between the magnet and an internal sleeve through an injection molding mode, and the tight fit connection is adopted between the supporting rack and the magnet, and between the supporting rack and the internal sleeve. Because the internal sleeve is added in the supporting rack, the circumferential surface can be effectively increased, the coating force is improved, and the slide is prevented. Because the supporting rack is formed by the injection molding mode, the production efficiency is high, the cost is low, and the weight is light. Because two ends of the magnet are provided with internal teeth and a concave-convex platform and the periphery of the metallic internal sleeve is provided with a knurling structure, etc, the supporting rack formed by injection molding is tightly connected with the magnet and the internal sleeve to form a whole, the problems of labor wasting, time wasting and poor reliability caused by the traditional bonding are solved, and the cost is effectively reduced.
Description
Technical field
The utility model relates to a kind of rotor, particularly relates to a kind of rotor of magneto.
Background technology
The common configuration of existing permanent magnet machine rotor sticks with glue magnet and metal supporting frames and connects as shown in Figure 1, and then is pressed into rotating shaft on (i.e. axle and endoporus interference fit) in the bracing frame endoporus, thereby forms a permanent magnet machine rotor.Because bracing frame generally forms with metal material processing such as aluminium, steel, therefore, cost height, quality weigh, stick with glue with magnet and to connect when assembling, usually adopt manual operations, its poor reliability, the axiality between magnet cylindrical and the bracing frame endoporus also be difficult to guarantee, toward contact will be after bonding process support frame endoporus again again.Therefore it is low to make this rotor productivity ratio, and cost is very high, and quality is heavy, and during electric motor starting, staring torque is big, and is also very long time of delay for the demanding motor of reaction sensitivity.
The utility model content
Technical problem to be solved in the utility model provides that a kind of cost is low, the permanent magnet machine rotor of light weight.
The technical scheme that the utility model technical solution problem is adopted is: the permanent magnet machine rotor that adopts composite construction, comprise magnet and bracing frame, form bracing frame by the injection moulding mode between described magnet and the interior cover, adopt tight fit to be connected between bracing frame and the magnet and between bracing frame and the interior cover.
The beneficial effects of the utility model are: owing to increased interior cover in bracing frame, can effectively increase periphery, thereby improve parcel power, anti-sliding stop, increase the life-span of permanent magnet machine rotor, and the rotor of this structure can carry out secondary fine finishining, satisfies client's instructions for use, improves precision.Because bracing frame is to form by the injection moulding mode, thereby its production efficiency height, cost is low, light weight.Because there are internal tooth and concavo-convex in the two ends of magnet, structures such as annular knurl are arranged on the inner metal sleeve outer surface, so the bracing frame that obtains of injection moulding forms an integral body with magnet and interior cover firmly, saved traditional bonding bring time-consuming, the problem of poor reliability also effectively reduces cost.Because the cylindrical of magnet and the endoporus of interior cover have reliable location in mould, therefore form magnet after axiality guaranteed effectively, saved the problem of the postorder processing that traditional method brings.
Description of drawings
Fig. 1 is the cutaway view of existing permanent magnet machine rotor.
Fig. 2 is a cutaway view of the present utility model.
Fig. 3 is the B-B cutaway view of Fig. 2.
Fig. 4 is an end view of the present utility model.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
The structure of permanent magnet machine rotor of the present utility model such as Fig. 2 and shown in Figure 4 are made up of magnet 1, bracing frame 2 and interior cover 3, and armature spindle is installed in the through hole 5 of interior cover 3.Wherein all adopt tight fit to connect between magnet 1 and the bracing frame 2 and between bracing frame 2 and the interior cover 3.The bracing frame 2 of prior motor rotor adopts integral body to process, materials such as general aluminium, steel, and magnet 1 is fixedly mounted on the bracing frame 2 by bonding mode.
Permanent magnet machine rotor of the present utility model has been owing to increased interior cover 3, so the material of bracing frame 2 can adopt plastics, and directly forms bracing frame 2 by injection molding way, and magnet 1 and interior cover 3 closely linked together, and reduced the production cost and the weight of rotor.
In order to guarantee the firm and reliable connection between bracing frame 2 and the interior cover 3, interior cover 3 is provided with anti-moving structure.Be provided with concavo-convex or annular knurl groove etc. as the outer surface of interior cover 3 and the connecting portion of bracing frame 2, at bracing frame 2 with after interior cover 3 injection mouldings are connected, because plastic shrink, cover 3 has very big package power in 2 pairs of the bracing frames, add the existence of concavo-convex or annular knurl groove, produce stop or increased mutual friction, can prevent mutual axial and radially relative motion effectively.
In order to guarantee the firm and reliable connection between bracing frame 2 and the magnet 1, on magnet 1, also be provided with anti-displacement structure, comprise that (1) prevent the axial endplay structure: the position that is connected with bracing frame 2 on magnet 1 inner peripheral surface is provided with concavo-convex 4, when bracing frame 3 with after magnet 1 is connected, concavo-convex 4 structure that magnet 1 and bracing frame 2 are complementary just can prevent moving axially between bracing frame 2 and the magnet 1.Wherein concavo-convex the 4 axial two ends that are preferably disposed on magnet 1.Certainly can also adopt other forms of structures such as cannelure, so long as can between magnet 1 and bracing frame 2, produce the structure of axial retention or increase axial friction.(2) anti-structure of rotating mutually: as shown in Figure 3, the inner peripheral surface of magnet 1 is provided with three internal tooths 6,, has prevented to rotate between magnet 1 and the bracing frame 2 with after magnet 1 is connected at bracing frame 2.Certainly the quantity of internal tooth 6 can be provided with as required, has one or several internal tooths 6 can reach identical purpose, is preferably 3-6.The shape of above-mentioned internal tooth 6 can be a double wedge, also can be groove, can both play the purpose that prevents that magnet 1 from rotating.
Because bracing frame 2 adopts the injection moulding modes to be made, for the weight that reduces plastics and guarantee its intensity and can bear bigger torque, be provided with web 7 in the inside of bracing frame 2, the quantity of web 7 be 3-6 for best.In cover 3 adopt metal materials (as aluminium alloy etc.), and bracing frame 2 adopts engineering plastics (as PBT, PO, POM etc.), it is more cheap, lighter with respect to metal material.
Owing to the utlity model has said structure, therefore both can bear very big torque, also can bear certain axial force.Because the utility model connects magnet 1 and interior cover 3 by the injection moulding mode, in injection moulding process, adopt the endoporus of magnet 1 outer surface and interior cover 3 to locate simultaneously, as long as guarantee the precision of mould, its axiality just is not difficult to guarantee, and its stability is very high.Therefore permanent magnet machine rotor of the present utility model was both durable, cheap, and economize on electricity is cost-saved again.
Claims (8)
1, adopts the permanent magnet machine rotor of composite construction, comprise magnet (1) and bracing frame (2), it is characterized in that: form bracing frame (2) by the injection moulding mode between described magnet (1) and the interior cover (3), adopt tight fit to be connected between bracing frame (2) and the magnet (1) and between bracing frame (2) and the interior cover (3).
2, the permanent magnet machine rotor of employing composite construction as claimed in claim 1 is characterized in that: be provided with anti-moving structure in described between cover (3) and the bracing frame (2).
3, the permanent magnet machine rotor of employing composite construction as claimed in claim 2 is characterized in that: described anti-moving structure is provided with concavo-convex or annular knurl groove for the outer surface of the connecting portion of interior cover (3) and bracing frame (2).
4, the permanent magnet machine rotor of employing composite construction as claimed in claim 1 is characterized in that: be provided with anti-displacement structure between bracing frame (2) and magnet (1).
5, the permanent magnet machine rotor of employing composite construction as claimed in claim 4 is characterized in that: described anti-displacement structure is provided with concavo-convex (4) or cannelure for the position that is connected with bracing frame (2) on magnet (1) inner peripheral surface.
6, the permanent magnet machine rotor of employing composite construction as claimed in claim 5 is characterized in that: described concavo-convex (4) are arranged on the axial two ends of magnet (1).
7, the permanent magnet machine rotor of employing composite construction as claimed in claim 4 is characterized in that: the internal tooth (6) of described anti-displacement structure for being provided with on the inner peripheral surface of magnet (1).
8, the permanent magnet machine rotor of employing composite construction as claimed in claim 1 is characterized in that: be provided with web (7) in the inside of support frame as described above (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060462 CN2720702Y (en) | 2004-07-28 | 2004-07-28 | Permanent-magnet motor rotor adapting composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060462 CN2720702Y (en) | 2004-07-28 | 2004-07-28 | Permanent-magnet motor rotor adapting composite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2720702Y true CN2720702Y (en) | 2005-08-24 |
Family
ID=35009651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420060462 Expired - Lifetime CN2720702Y (en) | 2004-07-28 | 2004-07-28 | Permanent-magnet motor rotor adapting composite structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2720702Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457371A (en) * | 2012-06-01 | 2013-12-18 | 浙江三花股份有限公司 | Circulation pump, rotor structure thereof, and machining method for rotor structure |
| CN103929039A (en) * | 2014-04-25 | 2014-07-16 | 黄山金马股份有限公司 | Pointer driving device |
| CN107257171A (en) * | 2017-08-22 | 2017-10-17 | 成都银河磁体股份有限公司 | A kind of integral type rotor assembly with sensor magnet and driving magnet |
| CN108134466A (en) * | 2017-12-29 | 2018-06-08 | 成都银河磁体股份有限公司 | Nonlinear type gusset magnet rotor component |
| CN112803678A (en) * | 2021-01-08 | 2021-05-14 | 东风博泽汽车系统有限公司 | Hall magnetic ring and motor with same |
| CN114665629A (en) * | 2022-04-20 | 2022-06-24 | 成都银河磁体股份有限公司 | Magnet structure, magnetic rotor and motor |
-
2004
- 2004-07-28 CN CN 200420060462 patent/CN2720702Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457371A (en) * | 2012-06-01 | 2013-12-18 | 浙江三花股份有限公司 | Circulation pump, rotor structure thereof, and machining method for rotor structure |
| CN103457371B (en) * | 2012-06-01 | 2017-05-10 | 浙江三花制冷集团有限公司 | Circulation pump, rotor structure thereof, and machining method for rotor structure |
| CN103929039A (en) * | 2014-04-25 | 2014-07-16 | 黄山金马股份有限公司 | Pointer driving device |
| CN107257171A (en) * | 2017-08-22 | 2017-10-17 | 成都银河磁体股份有限公司 | A kind of integral type rotor assembly with sensor magnet and driving magnet |
| CN108134466A (en) * | 2017-12-29 | 2018-06-08 | 成都银河磁体股份有限公司 | Nonlinear type gusset magnet rotor component |
| CN112803678A (en) * | 2021-01-08 | 2021-05-14 | 东风博泽汽车系统有限公司 | Hall magnetic ring and motor with same |
| CN114665629A (en) * | 2022-04-20 | 2022-06-24 | 成都银河磁体股份有限公司 | Magnet structure, magnetic rotor and motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140728 Granted publication date: 20050824 |