CN202364010U - Rotor for micro motor - Google Patents
Rotor for micro motor Download PDFInfo
- Publication number
- CN202364010U CN202364010U CN2011204790538U CN201120479053U CN202364010U CN 202364010 U CN202364010 U CN 202364010U CN 2011204790538 U CN2011204790538 U CN 2011204790538U CN 201120479053 U CN201120479053 U CN 201120479053U CN 202364010 U CN202364010 U CN 202364010U
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- CN
- China
- Prior art keywords
- magnetic
- rotor
- magnet ring
- magnetic ring
- ring
- 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 relates to the technical field of a motor, and particularly relates to a rotor for a micro motor. The rotor for the micro motor comprises an integrated injection-molded plastic magnetic ring and rotating shafts which are embedded inside the magnetic ring, wherein the magnetic ring is an integrated structure formed by injection-molding a magnetic material, a plurality of magnetic poles are injected on the surface of the magnetic ring, the magnetic poles are uniformly arranged inside a magnetic ring body in a way that the polarity of each magnetic pole is opposite to that of an adjacent magnetic pole, an end surface is connected into the magnetic ring, and reinforced bars are respectively arranged between the rotating shafts above and below the end surface and the inner wall of the magnetic ring. The rotor is formed in one time by the magnetic material, and the rotating shafts are adopted as an insert formed for one time, so that the concentricity and mass uniformity of the rotor can be guaranteed; and meanwhile, the plurality of magnetic poles are injected when the rotor is formed, so that the produced magnetic rotor has a multi-pole magnetic field.
Description
Technical field
The utility model relates to technical field of motors, and especially a kind of electrical micro-machine is used rotor.
Background technology
Electrical micro-machine has been widely used in fields such as automation, electromechanics now.In fields such as electrical micro-machine and stepping motor, be widely used multi-pole magnet-ring as rotor, add outside in the coil through behind the pulse current, rotor just turns over a fixing angle.
Traditional multi-pole magnet rotor is to use that the polylith magnet is bonding to form, but when the manufacturing small-sized electrical micro-machine, is difficult to processing, owing to be many magnetic patch splicings, is difficult to the magnetic pole angle is done accurately simultaneously.Be difficult to accomplish that whole rotor quality is even during simultaneously owing to splicing, make that the dynamic balancing of rotor is poor, increased the vibration and the noise of motor, influence motor performance.
The utility model content
The technical problem that the utility model will solve is: based on the problems referred to above, provide between a kind of distance between two poles and magnetic pole of simple in structure, multi-pole magnet angle accurately electrical micro-machine use rotor.
The utility model solves the technical scheme that its technical problem adopted: a kind of electrical micro-machine is used rotor; Comprise integrated injection molding plastics magnet ring and be embedded in the rotating shaft in the magnet ring; Described magnet ring is the injection molded integrative-structure of magnetic material, and the surface injection of magnet ring has a plurality of magnetic poles, and described magnetic pole is evenly arranged in the magnetic ring body by the polarity of putting upside down each other; Be connected with an end face in the described magnet ring, upper and lower rotating shaft place of end face is provided with reinforcement to magnet ring inwall place.
Described magnet ring is columnar structured.
Described reinforcement is four of circumference five equilibrium.
The beneficial effect of the utility model is: the utility model is the one-time formed rotor of magnetic material; Rotating shaft is also as the inserts in the one-shot forming; The concentricity of rotor and the uniformity of quality have been guaranteed; Simultaneously injected a plurality of magnetic poles simultaneously, made the magnet rotor of processing have multipole magnetic field in moulding.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the sectional structure sketch map of the utility model.
Fig. 2 is the plan structure sketch map of the utility model.
Among the figure: 1. magnet ring, 2. rotating shaft, 3. end face, 4. reinforcement.
Embodiment
Combine accompanying drawing that the utility model is done further detailed explanation now.These accompanying drawings are the sketch map of simplification, the basic structure of the utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
A kind of electrical micro-machine shown in Fig. 1～2 is used rotor; Comprise integrated injection molding plastics magnet ring 1 and be embedded in the rotating shaft 2 in the magnet ring 1; Magnet ring 1 is the injection molded integrative-structure of magnetic material, and the surface injection of magnet ring 1 has a plurality of magnetic poles, and magnetic pole is evenly arranged in magnet ring 1 body by the polarity of putting upside down each other; Be connected with an end face 3 in the magnet ring 1, end face 3 upper and lower rotating shaft 2 places are provided with reinforcement 4 to magnet ring 1 inwall place.
Magnet ring 1 is columnar structured.
With above-mentioned desirable embodiment according to the utility model is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must confirm its technical scope according to the claim scope.
Claims (3)
1. an electrical micro-machine is used rotor; It is characterized in that: comprise integrated injection molding plastics magnet ring (1) and be embedded in the rotating shaft (2) in the magnet ring (1); Described magnet ring (1) is the injection molded integrative-structure of magnetic material, and the surface injection of magnet ring (1) has a plurality of magnetic poles, and described magnetic pole is evenly arranged in magnet ring (1) body by the polarity of putting upside down each other; Be connected with an end face (3) in the described magnet ring (1), the upper and lower rotating shaft (2) of end face (3) is located magnet ring (1) inwall place and is provided with reinforcement (4).
2. a kind of electrical micro-machine according to claim 1 is used rotor, it is characterized in that: described magnet ring (1) is for columnar structured.
3. a kind of electrical micro-machine according to claim 1 is used rotor, it is characterized in that: described reinforcement (4) is four of the circumference five equilibrium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204790538U CN202364010U (en) | 2011-11-27 | 2011-11-27 | Rotor for micro motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204790538U CN202364010U (en) | 2011-11-27 | 2011-11-27 | Rotor for micro motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202364010U true CN202364010U (en) | 2012-08-01 |
Family
ID=46575166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204790538U Expired - Fee Related CN202364010U (en) | 2011-11-27 | 2011-11-27 | Rotor for micro motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202364010U (en) |
-
2011
- 2011-11-27 CN CN2011204790538U patent/CN202364010U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20121127 |