CN202076863U - Rotor assembly - Google Patents
Rotor assembly Download PDFInfo
- Publication number
- CN202076863U CN202076863U CN2011201836667U CN201120183666U CN202076863U CN 202076863 U CN202076863 U CN 202076863U CN 2011201836667 U CN2011201836667 U CN 2011201836667U CN 201120183666 U CN201120183666 U CN 201120183666U CN 202076863 U CN202076863 U CN 202076863U
- Authority
- CN
- China
- Prior art keywords
- protective cover
- permanent magnet
- rotor assembly
- arc
- permanent magnets
- 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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Abstract
The utility model discloses a rotor assembly, which comprises a rotating shaft (1), a rotor core (2) and a plurality of permanent magnets (3) which are arranged on the external side surface of the rotor core (2). A protective cover (4) is nested on the external side of the permanent magnets (3). The protective cover (4) comprises a plurality of arc-shaped plates (41) and a plurality of straight plates (42). The internal side wall surfaces of the arc-shaped plates (4) are in close contact with the external side surfaces of the permanent magnets (3). Two adjacent arc-shaped plates (41) are transitioned through the straight plate (42). By changing the shape of the protective cover to enable the protective cover is in surface contact with the permanent magnets, the gap is small, the bonding force is increased, the manufacturability is good and the protective cover is ensured to be not apt to fall off during the running of a motor.
Description
Technical field:
The utility model relates to a kind of rotor assembly, belongs to the brushless electric machine field.
Background technology:
The rotor assembly of traditional brushless electric machine; as shown in Figure 1; comprise rotating shaft 1, rotor core 2, permanent magnet 3; for preventing permanent magnet 3 surface oxidisation or coming off; on permanent magnet 3 circumference, be pressed into protective cover 4; when permanent magnet 3 is eccentric permanent magnet; protective cover 4 contacts for line with permanent magnet 3; contact area is little; the slit is big between protective cover 4 and the permanent magnet 3, and adhesion depends on that fully permanent magnet 3 cooperates elasticity with protective cover 4, and manufacturability can't guarantee; protective cover 4 comes off in rotary course easily, loses 3 effects of protection permanent magnet.
Summary of the invention:
The purpose of this utility model provides a kind of rotor assembly, and by changing the protective cover shape, making protective cover and permanent magnet is that face contacts, and the slit is little, increases adhesion, and good manufacturability guarantees protective cover difficult drop-off in motor rotation.
The purpose of this utility model is to be achieved by following technical scheme.
A kind of rotor assembly, comprise rotating shaft, rotor core and be installed in some permanent magnets of rotor core lateral surface, the nested protective cover in the permanent magnet outside, protective cover comprises some arcs and some straight plates, the arc interior sidewall surface is adjacent to the permanent magnet lateral surface, between adjacent two arcs by straight plate transition.
The outer side surface of above-mentioned described straight plate and adjacent two permanent magnets is tangent.
Above-mentioned described bottom at protective cover inwardly folds flange, and cavity is formed on flange and permanent magnet bottom.
Above-mentioned described rotor core is provided with some positioning boss, and some positioning boss evenly circumferentially are distributed in stator core lateral surface and two adjacent permanent magnets are spaced apart.
The quantity of above-mentioned described arc and permanent magnet equates.
The quantity of above-mentioned described straight plate and permanent magnet equates.
The quantity of above-mentioned described arc and straight plate equates.
Above-mentioned described arc, straight plate and flange are the integrally casting moulding.
The utility model beneficial effect compared with prior art is: 1) protective cover comprises some arcs and some straight plates, the arc interior sidewall surface is adjacent to the permanent magnet lateral surface, between adjacent two arcs by straight plate transition, it is that face contacts that this structure makes protective cover and permanent magnet, the slit is little, increase adhesion, good manufacturability guarantees protective cover difficult drop-off in motor rotation; 2) outer side surface of straight plate and adjacent two permanent magnets is tangent, and protective cover and permanent magnet contact area maximum are fastening effective; 3) bottom of protective cover inwardly folds flange, and cavity is formed on flange and permanent magnet bottom, and cavity is used to place the balance clay, and clay is proofreaied and correct rotor dynamic balancing; 4) rotor core is provided with some positioning boss, and some positioning boss evenly circumferentially are distributed in stator core lateral surface and two adjacent permanent magnets are spaced apart, and permanent magnet is easy for installation, accurate positioning; 5) arc, straight plate and flange are the integrally casting moulding, are suitable for and produce the production efficiency height in batches.
Description of drawings:
Fig. 1 is a prior art rotor component construction schematic diagram;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is the A-A partial enlarged drawing of Fig. 2;
Fig. 4 is a stereogram of the present utility model;
Fig. 5 is a cutaway view of the present utility model.
Embodiment:
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
As Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, a kind of rotor assembly of the present utility model, comprise rotating shaft 1, rotor core 2 and be installed in some permanent magnets 3 of rotor core 2 lateral surfaces, the nested protective cover 4 in permanent magnet 3 outsides, protective cover 4 comprises some arcs 41 and some straight plates 42, arc 41 interior sidewall surface are adjacent to permanent magnet 3 lateral surfaces, and adjacent two arcs 41 are by straight plate 42 transition; Straight plate 42 is tangent with the outer side surface of adjacent two permanent magnets 3; Bottom at protective cover 4 inwardly folds flange 43, and flange 43 forms cavity 5 with permanent magnet 3 bottoms; Rotor core 2 is provided with some positioning boss 21, and some positioning boss 21 evenly circumferentially are distributed in stator core 2 lateral surfaces and two adjacent permanent magnets 3 are spaced apart; The quantity of arc 41 and permanent magnet 3 equates; The quantity of straight plate 42 and permanent magnet 3 equates; The quantity of arc 41 and straight plate 42 equates; Arc 41, straight plate 42 and flange 43 are integrally casting moulding.Rotor of the present utility model comprises rotating shaft 1; rotor core 2 and the some permanent magnets 3 that are installed in rotor core 2 lateral surfaces; the nested protective cover 4 in permanent magnet 3 outsides; protective cover 4 comprises some arcs 41 and some straight plates 42; arc 41 interior sidewall surface are adjacent to permanent magnet 3 lateral surfaces; adjacent two arcs 41 are by straight plate 42 transition; protective cover 4 design shapes are identical with rotor permanent magnet 3 outer contour shapes; protective cover 4 is contacted for face with permanent magnet 3; adhesion increases; protective cover 4 designs shape between adjacent two permanent magnets 3 connects with straight plate 42; make protective cover 4 be shaped as square or polygon; because shape is square or polygon; protective cover 4 can not come off in the motor operation course, effectively protects permanent magnet 3.
Claims (8)
1. rotor assembly, comprise rotating shaft (1), rotor core (2) and be installed in some permanent magnets (3) of rotor core (2) lateral surface, it is characterized in that: permanent magnet (3) outside nested protective cover (4), protective cover (4) comprises some arcs (41) and some straight plates (42), arc (41) interior sidewall surface is adjacent to permanent magnet (3) lateral surface, and adjacent two arcs (41) are by straight plate (42) transition.
2. a kind of rotor assembly according to claim 1 is characterized in that: straight plate (42) is tangent with the outer side surface of adjacent two permanent magnets (3).
3. a kind of rotor assembly according to claim 1 and 2 is characterized in that: inwardly fold flange (43) in the bottom of protective cover (4), flange (43) forms cavity (5) with permanent magnet (3) bottom.
4. a kind of rotor assembly according to claim 1 and 2, it is characterized in that: rotor core (2) is provided with some positioning boss (21), and some positioning boss (21) evenly circumferentially are distributed in stator core (2) lateral surface and adjacent two permanent magnets (3) are spaced apart.
5. a kind of rotor assembly according to claim 1 and 2 is characterized in that: the quantity of arc (41) and permanent magnet (3) equates.
6. a kind of rotor assembly according to claim 1 and 2 is characterized in that: the quantity of straight plate (42) and permanent magnet (3) equates.
7. a kind of rotor assembly according to claim 1 and 2 is characterized in that: the quantity of arc (41) and straight plate (42) equates.
8. a kind of rotor assembly according to claim 3 is characterized in that: arc (41), straight plate (42) and flange (43) are the integrally casting moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201836667U CN202076863U (en) | 2011-06-02 | 2011-06-02 | Rotor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201836667U CN202076863U (en) | 2011-06-02 | 2011-06-02 | Rotor assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076863U true CN202076863U (en) | 2011-12-14 |
Family
ID=45114940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201836667U Expired - Lifetime CN202076863U (en) | 2011-06-02 | 2011-06-02 | Rotor assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076863U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516081A (en) * | 2012-06-20 | 2014-01-15 | 株式会社电装 | Rotor, dynamo-electric machine having rotor and rotor manufacturing method |
| CN108462265A (en) * | 2018-04-08 | 2018-08-28 | 重庆奥兴嘉科技有限公司 | A kind of motor with stator safeguard function |
| CN117589368A (en) * | 2024-01-16 | 2024-02-23 | 莫安迪(苏州)电机技术有限公司 | Rotor quality detection device and detection method thereof |
-
2011
- 2011-06-02 CN CN2011201836667U patent/CN202076863U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516081A (en) * | 2012-06-20 | 2014-01-15 | 株式会社电装 | Rotor, dynamo-electric machine having rotor and rotor manufacturing method |
| CN103516081B (en) * | 2012-06-20 | 2015-08-12 | 株式会社电装 | Rotor, the electric generator-motor with rotor and method for manufacturing rotor |
| CN108462265A (en) * | 2018-04-08 | 2018-08-28 | 重庆奥兴嘉科技有限公司 | A kind of motor with stator safeguard function |
| CN108462265B (en) * | 2018-04-08 | 2023-07-21 | 重庆奥兴嘉科技有限公司 | Motor with stator protection function |
| CN117589368A (en) * | 2024-01-16 | 2024-02-23 | 莫安迪(苏州)电机技术有限公司 | Rotor quality detection device and detection method thereof |
| CN117589368B (en) * | 2024-01-16 | 2024-04-09 | 莫安迪(苏州)电机技术有限公司 | Rotor quality detection device and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |