CN103138433A - Micromotor rotor - Google Patents
Micromotor rotor Download PDFInfo
- Publication number
- CN103138433A CN103138433A CN 201110384086 CN201110384086A CN103138433A CN 103138433 A CN103138433 A CN 103138433A CN 201110384086 CN201110384086 CN 201110384086 CN 201110384086 A CN201110384086 A CN 201110384086A CN 103138433 A CN103138433 A CN 103138433A
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- China
- Prior art keywords
- magnetic
- magnet ring
- rotor
- face
- magnetic ring
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- 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, in particular to a micromotor rotor which comprises an integrally injection-molded plastic magnetic ring and a rotary shaft inserted in the magnetic ring, the magnetic ring is an integrated structure injection-molded from magnetic material. A plurality of magnetic poles which are evenly arrayed inside a magnetic ring body in a reverse polarity mode are injected on the surface of the magnetic ring, an end face is connected inside the magnetic ring, reinforcing ribs are arranged from the positions, above and below the end face, of the rotary shaft to inner wall of the magnetic ring, and the reinforcing ribs are connected with the end face. The micromotor rotor is integrally molded from the magnetic material, the rotary shaft also serves as an integrally molded insert, the concentricity of the rotor and the evenness of the quality are guaranteed, meanwhile the plurality of magnetic poles are injected during molding, and the manufactured magnetic rotor is enabled to have a multipole magnetic field.
Description
Technical field
The present invention relates to technical field of motors, especially a kind of rotor of electrical micro-machine.
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 the angle rotor of electrical micro-machine accurately.
The technical solution adopted for the present invention to solve the technical problems is: the rotor that a kind of electrical micro-machine 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, upper and lower rotating shaft place of end face is provided with reinforcement to magnet ring inwall place, and described reinforcement is connected with end face.
Described magnet ring is columnar structured.
Described reinforcement is ten 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. 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.
The rotor of the electrical micro-machine 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, end face 3 upper and lower rotating shaft 2 places are provided with reinforcement 4 to magnet ring 1 inwall place, and reinforcement 4 is connected with end face 3.
Magnet ring 1 is columnar structured.
Reinforcement 4 is ten of circumference equal dividing.
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. the rotor of electrical micro-machine, 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), on end face (3), under rotating shaft (2) locate magnet ring (1) inwall place and be provided with reinforcement (4), described reinforcement (4) is connected with end face (3).
2. the rotor of electrical micro-machine according to claim 1 is characterized in that: described magnet ring (1) is for columnar structured.
3. the rotor of electrical micro-machine according to claim 1 is characterized in that: described reinforcement (4) is ten of circumference equal dividing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110384086 CN103138433A (en) | 2011-11-27 | 2011-11-27 | Micromotor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110384086 CN103138433A (en) | 2011-11-27 | 2011-11-27 | Micromotor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103138433A true CN103138433A (en) | 2013-06-05 |
Family
ID=48497883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110384086 Pending CN103138433A (en) | 2011-11-27 | 2011-11-27 | Micromotor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103138433A (en) |
-
2011
- 2011-11-27 CN CN 201110384086 patent/CN103138433A/en active Pending
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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 |