CN103138443A - Micromotor rotor - Google Patents
Micromotor rotor Download PDFInfo
- Publication number
- CN103138443A CN103138443A CN 201110383150 CN201110383150A CN103138443A CN 103138443 A CN103138443 A CN 103138443A CN 201110383150 CN201110383150 CN 201110383150 CN 201110383150 A CN201110383150 A CN 201110383150A CN 103138443 A CN103138443 A CN 103138443A
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- CN
- China
- Prior art keywords
- magnet ring
- rotor
- rotating shaft
- face
- magnetic
- 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.)
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Abstract
The invention relates to the technical field of motors and particularly relates to a micromotor rotor. The micromotor rotor comprises a plastic magnet ring and a rotating shaft, wherein the plastic magnet ring is subjected to integrated injection molding, the rotating shaft is embedded inside the magnet ring, the magnet ring is an integrated structure formed by injection molding of magnetic materials, a plurality of magnetic poles are injected on the surface of the magnetic ring, magnetic poles are uniformly arranged inside the body of the magnet ring in the sequence of reversed polarities, an end face is connected inside the magnet ring, two round holes which are arranged oppositely are arranged on the end face, and a reinforcing rib is arranged from the position of the rotating shaft on the upper portion of the end face to the position of the inner wall of the magnet ring. The rotor is formed once with magnetic materials, the rotating shaft serves as an insert during once molding, the concentricity of the rotor and the uniformity of the quality can be guaranteed, and simultaneously, the plurality of magnetic poles are injected at the same time of molding, so that the produced magnet rotor is provided with a multipole magnetic field.
Description
Technical field
The present invention relates to technical field of motors, especially a kind of micro-motor rotor.
Background technology
Electrical micro-machine has been widely used in the fields such as automation, electromechanics now.Be widely used multi-pole magnet-ring as rotor in the fields such as electrical micro-machine and stepping motor, add outside in coil by after a pulse current, rotor just turns over a fixing angle.
Traditional multi-pole magnet rotor is to use bonding the forming of polylith magnet, but is difficult to processing when making small-sized electrical micro-machine, owing to being 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 due to splicing, make the dynamic balancing of rotor poor, increased vibration and the noise of motor, affect motor performance.
Summary of the invention
The technical problem to be solved in the present invention is: based on the problems referred to above, the invention provides between a kind of distance between two poles of simple in structure, multi-pole magnet and magnetic pole angle micro-motor rotor accurately.
The technical solution adopted for the present invention to solve the technical problems is: a kind of micro-motor rotor is provided, comprise integrated injection molding plastics magnet ring and the rotating shaft that is embedded in magnet ring, described magnet ring is the injection molded integrative-structure of magnetic material, the surface injection of magnet ring has a plurality of magnetic poles, described magnetic pole is evenly arranged in magnetic ring body by the polarity of mutually putting upside down, be connected with an end face in described magnet ring, offer two circular holes that are oppositely arranged on end face, rotating shaft place on end face top is provided with reinforcement to magnet ring inwall place.
Described magnet ring is columnar structured.
Described reinforcement is four of circumference equal dividing.
The invention has the beneficial effects as follows: the present invention is the one-time formed rotor of magnetic material, rotating shaft is also as the inserts in one-shot forming, guarantee the concentricity of rotor and the uniformity of quality, injected simultaneously a plurality of magnetic poles in moulding simultaneously, made the magnet rotor of making have multipole magnetic field.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing embodiment.
Fig. 1 is sectional structure schematic diagram of the present invention.
Fig. 2 is plan structure schematic diagram of the present invention.
In figure: 1. magnet ring, 2. rotating shaft, 3. end face, 4. circular hole, 5. reinforcement.
Embodiment
The invention will be further described in conjunction with specific embodiments now, and following examples are intended to illustrate the present invention rather than limitation of the invention further.
Micro-motor rotor as shown in Fig. 1～2, comprise integrated injection molding plastics magnet ring 1 and the rotating shaft 2 that is embedded in magnet ring, magnet ring 1 is the injection molded integrative-structure of magnetic material, the surface injection of magnet ring 1 has a plurality of magnetic poles, magnetic pole is evenly arranged in magnet ring 1 body by the polarity of mutually putting upside down, be connected with an end face 3 in magnet ring 1, offer two circular holes that are oppositely arranged 4 on end face 3, rotating shaft 2 places on end face 3 tops are provided with reinforcement 5 to magnet ring 1 inwall place.
Magnet ring 1 is columnar structured.
Take above-mentioned foundation desirable embodiment of the present invention as enlightenment, by above-mentioned description, the relevant staff can in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to the claim scope.
Claims (3)
1. micro-motor rotor, it is characterized in that: comprise integrated injection molding plastics magnet ring (1) and be embedded in rotating shaft (2) in magnet ring (1), described magnet ring (1) is the injection molded integrative-structure of magnetic material, the surface injection of magnet ring (1) has a plurality of magnetic poles, described magnetic pole is evenly arranged in magnet ring (1) body by the polarity of mutually putting upside down, be connected with an end face (3) in described magnet ring (1), offer two circular holes that are oppositely arranged (4) on end face (3), the rotating shaft (2) on end face (3) top is located magnet ring (1) inwall place and is provided with reinforcement (5).
2. micro-motor rotor according to claim 1 is characterized in that: described magnet ring (1) is for columnar structured.
3. micro-motor rotor according to claim 1 is characterized in that: described reinforcement (5) is four of circumference equal dividing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110383150 CN103138443A (en) | 2011-11-27 | 2011-11-27 | Micromotor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110383150 CN103138443A (en) | 2011-11-27 | 2011-11-27 | Micromotor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103138443A true CN103138443A (en) | 2013-06-05 |
Family
ID=48497888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110383150 Pending CN103138443A (en) | 2011-11-27 | 2011-11-27 | Micromotor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103138443A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113867118A (en) * | 2021-12-07 | 2021-12-31 | 常州鹏科电子有限公司 | Integrally-formed rotor wheel for quartz electronic watch core and preparation process |
-
2011
- 2011-11-27 CN CN 201110383150 patent/CN103138443A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113867118A (en) * | 2021-12-07 | 2021-12-31 | 常州鹏科电子有限公司 | Integrally-formed rotor wheel for quartz electronic watch core and preparation process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130605 |