CN203278591U - Miniaturized stepping motor rotor - Google Patents
Miniaturized stepping motor rotor Download PDFInfo
- Publication number
- CN203278591U CN203278591U CN 201320245643 CN201320245643U CN203278591U CN 203278591 U CN203278591 U CN 203278591U CN 201320245643 CN201320245643 CN 201320245643 CN 201320245643 U CN201320245643 U CN 201320245643U CN 203278591 U CN203278591 U CN 203278591U
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- China
- Prior art keywords
- gear
- magnetite
- magnet
- motor rotor
- stepping motor
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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.)
- Expired - Fee Related
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Abstract
The utility model discloses a miniaturized stepping motor rotor comprising a plastic gear and a magnet fixed on the periphery of the plastic gear, wherein the inner circular edge of the magnet is provided with four ribs for preventing the axial rotation of the gear and the magnet, the upside and downside of the inner circle of the magnet are provided with chamfers for preventing the radial motion of the gear and the magnet, the center of the plastic gear is provided with a shaft hole, the magnet is made of NdFeB magnetic materials, and the gear is made of modified gear materials used in automobile engineering. The miniaturized stepping motor rotor has the advantages of high fixation and firmness, superior magnetic properties, high reliability, relatively good wear resistance performance and precision, stable high-torsional force output and the like.
Description
Technical field
The utility model relates to technical field of motors, relates in particular to a kind of rotor structure for micro-step motor.
Background technology
Stepping motor be a kind of be the actuator of angular displacement with electroporation.More popular saying: when step actuator receives a pulse signal, it rotates a fixing angle (being step angle) with regard to the Driving Stepping Motor rotor structure by the direction of setting.The user can come the pilot angle displacement by the control impuls number, thereby reaches the purpose of accurate location; Simultaneously can also control by the control impuls frequency speed and the acceleration of electric machine rotation, thereby reach the purpose of speed governing.
General micro-step motor, all adopt the design of moving rotor, the method for designing of general rotor has two kinds: a kind of is to use ferrite magnetic material directly by moulding, magnetite and gear to be made of one, the advantage of this mode is fairly simple, can once make magnetite and gear, but shortcoming is that ferritic magnetic is more weak than very, and the making ratio of precision of this material is lower, volume also can be larger, cause exist to start frequency need larger, and the phenomenon such as torsion deficiency.Another kind is first to make gear with plastic material, and then the magnet ring that the Ru-Fe-Mn magnetic material is made is passed through interference fit together, the advantage of this mode is that magnetite can adopt the high-performance magnetic, magnetic can be more intense, but because being assembles by interference fit, gear and magnetite dimensional fits control ratio are more difficult, and long-term reliability can be very poor, and assembly technology is also very complicated.
The utility model content
The purpose of this utility model is to provide a kind of fixation for the deficiencies in the prior art, has excellent magnetic characteristics, reliability is high, resistance to wear and precision micro-step motor novel rotor preferably.
To achieve these goals, the utility model provides following technical scheme: a kind of micro-step motor rotor, comprise plastic gear and be fixed on the magnetite of plastic gear periphery, the inner circle edge of described magnetite is provided with 4 ribs that prevent gear and magnetite axial rotation, the inner circle of described magnetite has the chamfering that prevents gear and magnetite radial motion up and down, and the center of described plastic gear has axis hole.
Preferably, described magnetite material is the Ru-Fe-Mn magnetic material, and described gear material is modification gear materials on automobile engineering.
Preferably, described anti-axial rotation rib is semicircle, and radius is 0.25mm, and described inner circle chamfer dimesion is 0.3 * 45 °.
The utility model adopts technique scheme, adopts the Ru-Fe-Mn magnetic material to make magnetite, and table magnetic precision and magnetic flux are all very high, has guaranteed a stable high torsion output; Internal production rib at magnetite prevents axial operation, and interior rounded corner prevents radial motion, then put into plastic forming die by automation equipment, and use the engineering gear that is more suitable for running up to carry out the plug-in unit injection made gear with material, magnetite and gear are made of one, and resistance to wear and precision get a promotion, and have overcome the deficiency of prior art, guaranteed that comparison of magnetic property is good, reliability also can be higher.
Description of drawings
The below utilizes accompanying drawing that the utility model is further detailed, but the embodiment in accompanying drawing does not consist of any restriction of the present utility model.
Fig. 1 is the overall structure schematic diagram of micro-step motor rotor described in the utility model.
Fig. 2 is the B-B cross section structure schematic diagram of the described micro-step motor rotor of Fig. 1.
Fig. 3 is the magnet structure schematic diagram of described micro-step motor rotor.
Fig. 4 is the A-A schematic cross-section of the described micro-step motor rotor of Fig. 3 magnet structure.
Embodiment
In order better to understand the technical solution of the utility model, describe below in conjunction with accompanying drawing the embodiment that the utility model provides in detail.
Stepping motor is general main to be comprised of stator and rotor, and the rotor of motor is permanent magnet usually, and when electric current flow through stator winding, stator winding produced a Vector Magnetic Field.This magnetic field can rotate an angle by rotor driven, makes the pair of magnetic field direction of rotor consistent with the magnetic direction of stator.Angle of Vector Magnetic Field rotation when stator.Rotor is also along with this magnetic field turns an angle.Electric pulse of every input, motor rotates an angle and takes a step forward.The angular displacement of its output is directly proportional to the umber of pulse of input, rotating speed is directly proportional to pulse frequency.Change the order of winding energising, motor will reverse.So the power-up sequence of useful control impuls quantity, frequency and each phase winding of motor is come the rotation of control step motor.
As Figure 1-Figure 4, the utility model embodiment provides a kind of novel rotor for micro-step motor, comprise that plastic gear and 2 is fixed on the magnetite 1 of plastic gear 2 peripheries, the inner circle edge of described magnetite 1 is provided with 4 ribs 4 that prevent gear and magnetite axial rotation, the inner circle of described magnetite 1 has the chamfering 5 that prevents gear and magnetite radial motion up and down, and the center of described plastic gear has axis hole 3.
Described magnetite 1 material is the Ru-Fe-Mn magnetic material, and described gear 2 materials are modification gear materials on automobile engineering.
Preferably, described anti-axial rotation rib 4 is semicircle, and radius is 0.25mm, and described interior rounded corner 5 is of a size of 0.3 * 45 °.
The utility model adopts technique scheme, adopts the Ru-Fe-Mn magnetic material to make magnetite, and table magnetic precision and magnetic flux are very high, has guaranteed a stable high torsion output; Prevent axial operation by the internal production rib at magnetite, and interior rounded corner prevents radial motion, then put into plastic forming die by automation equipment, and use the engineering gear that is more suitable for running up to carry out the plug-in unit injection made gear with material, magnetite and gear are made of one, and resistance to wear and precision get a promotion, and have overcome the deficiency of prior art, guaranteed that comparison of magnetic property is good, reliability also can be higher.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (3)
1. micro-step motor rotor, it is characterized in that, comprise plastic gear and be fixed on the magnetite of plastic gear periphery, the inner circle edge of described magnetite is provided with 4 ribs that prevent gear and magnetite axial rotation, the inner circle of described magnetite has the chamfering that prevents gear and magnetite radial motion up and down, and the center of described plastic gear has axis hole.
2. a kind of micro-step motor rotor as claimed in claim 1, is characterized in that, described magnetite material is the Ru-Fe-Mn magnetic material, and described gear material is modification gear materials on automobile engineering.
3. a kind of micro-step motor rotor as claimed in claim 1, is characterized in that, described anti-axial rotation rib is semicircle, and radius is 0.25mm, and described inner circle chamfer dimesion is 0.3 * 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320245643 CN203278591U (en) | 2013-05-07 | 2013-05-07 | Miniaturized stepping motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320245643 CN203278591U (en) | 2013-05-07 | 2013-05-07 | Miniaturized stepping motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203278591U true CN203278591U (en) | 2013-11-06 |
Family
ID=49508916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320245643 Expired - Fee Related CN203278591U (en) | 2013-05-07 | 2013-05-07 | Miniaturized stepping motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203278591U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245358A (en) * | 2018-09-28 | 2019-01-18 | 福州小神龙表业技术研发有限公司 | A kind of timepiece movement rotor and its manufacturing method |
| CN114006483A (en) * | 2021-10-15 | 2022-02-01 | 横店集团东磁股份有限公司 | Novel plastic magnetic sensing magnet for brake system and implementation method thereof |
-
2013
- 2013-05-07 CN CN 201320245643 patent/CN203278591U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245358A (en) * | 2018-09-28 | 2019-01-18 | 福州小神龙表业技术研发有限公司 | A kind of timepiece movement rotor and its manufacturing method |
| CN114006483A (en) * | 2021-10-15 | 2022-02-01 | 横店集团东磁股份有限公司 | Novel plastic magnetic sensing magnet for brake system and implementation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20160507 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |