CN1427533A - Step motor - Google Patents
Step motor Download PDFInfo
- Publication number
- CN1427533A CN1427533A CN 01144536 CN01144536A CN1427533A CN 1427533 A CN1427533 A CN 1427533A CN 01144536 CN01144536 CN 01144536 CN 01144536 A CN01144536 A CN 01144536A CN 1427533 A CN1427533 A CN 1427533A
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- CN
- China
- Prior art keywords
- rotor
- rotating shaft
- utmost point
- solenoid
- stepper motor
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Abstract
A step motor has a rotor and a stator. Said rotor is composed of a shaft with multiple salient poles on its surface, multiple groups of electromagnetic windings wound on salient poles and at least one electromagnetic winding wound on shaft. Said stator consists of multiple armature cores surrounding rotor and multiple groups of armature windings wound on armature cores.
Description
Technical field
The invention relates to a kind of stepper motor (stepping motor or stepper motor), particularly relevant for a kind of prominent utmost point that twines solenoid in rotor, or rotating shaft axially on twine the stepper motor of solenoid respectively to the prominent utmost point of rotor.
Background technology
In many industrial control systems, require the precision positioning of a workpiece or the precision control of speed, stepper motor (stepping motor or stepper motor) is applicable to this kind application.Because stepper motor has that build is light and handy, concealed, high efficiency, control performance is good and multiple advantages such as non-maintaining, thereby is used in the power source of image input and output devices such as scanner, printer, facsimile machine and photocopier in a large number.
Please refer to Fig. 1, it is the horizontal section schematic diagram of known a kind of stepper motor.Stepper motor 100 is mainly by rotor (rotor) 110 and 120 formations of stator (stator).Known rotor 110 is made of a rotating shaft 112 and a plurality of prominent utmost point 114, and the wherein prominent utmost point 114 for example is the N utmost point or the S utmost point of a permanent magnet, and the prominent utmost point 114 twisted rotary shaft 112 and protrude in the outer surface of rotating shaft 112 respectively successively.In addition, stator 120 is made of a plurality of armature cores 122 and a plurality of armature coil 124, wherein keep a space between the two adjacent armature cores 122, make one group of armature coil 124 be wound on the armature core 122, a plurality of armature cores 122 and corresponding armature coil 124 thereof then are surrounded on the outside of rotor 110 successively, and the outer end of armature core 122 connects mutually.When the armature coil 124 of input current to stator 120, make when armature coil 124 produces magnetic field, the prominent utmost point 114 of rotor 110 will be subjected to the influence in the magnetic field of armature coil 124, make rotor 110 rotating shaft 112 axially on rotation, thereby the moment that rotates, and export the external world to via rotating shaft 112.
Known stepper motor adopts mostly to be decided magnet rotor (promptly with the rotor of permanent magnet as the prominent utmost point) and becomes magnetic stator (promptly responding to the stator that produces magnetic field to armature coil with input current), owing to decide the permanent magnet of magnet rotor after finishing towards magnetic, promptly fix the size of its magnetic flux, therefore, known stepper motor is after long-term the use or under condition of overhigh temperature, may destroy original magnetic of deciding magnet rotor distributes, under the action of a magnetic field that becomes the magnetic stator, make that easily rotating speed and the torque of deciding magnet rotor are affected, thereby reduce the overall work usefulness of stepper motor.
Summary of the invention
The object of the present invention is to provide a kind of stepper motor, its rotor is under the situation of long-term use or high temperature, still can keep identical flux change, or when needing high torque (HT), increase the flux change of rotor, or when needing low torque, reduce the flux change of rotor, make that the characteristic of stepper motor is perfect more.
Based on above-mentioned purpose of the present invention, the present invention proposes a kind of stepper motor, comprises a rotor and a stator at least.Rotor is made of a rotating shaft, a plurality of prominent utmost point and plurality of electromagnetic coil, wherein these prominent utmost points successively around and protrude in the outer surface of rotating shaft, and these solenoids upwards are wound in one of these prominent utmost points in the footpath of rotating shaft respectively.In addition, stator has a plurality of armature cores and many group armature coils, and wherein these armature cores are surrounded on the outside of rotor successively, and these armature coils upwards are wound in one of these armature cores in the footpath of rotating shaft respectively.
Based on above-mentioned purpose of the present invention, the present invention provides a kind of stepper motor again, comprises a kind of stepper motor at least, comprises a rotor and a stator at least.Rotor is made of a rotating shaft, a plurality of prominent utmost points and at least one solenoid, wherein these prominent utmost points successively around and protrude in the outer surface of rotating shaft, solenoid rotating shaft axially on be wound in rotating shaft.In addition, stator has a plurality of armature cores and many group armature coils, and wherein these armature cores are surrounded on the outside of rotor successively, and these armature coils upwards are wound in one of these armature cores in the footpath of rotating shaft respectively.
The present invention makes progress in the footpath of the rotating shaft of stepper motor, twining one group of solenoid respectively extremely goes up in the prominent of rotor, and by input current forward or backwards to solenoid, make the corresponding magnetic field that produces different directions of solenoid, so as to increasing or reduce the magnetic field intensity of the pairing prominent utmost point of solenoid.
The present invention the rotating shaft of stepper motor axially on, twine at least one group of solenoid in rotating shaft, and by input current forward or backwards to solenoid, make the corresponding magnetic field that produces different directions of solenoid, so as to changing the flux change of rotor.
Description of drawings
Fig. 1 is the horizontal section schematic diagram of known a kind of stepper motor;
Fig. 2 is the horizontal section schematic diagram of the stepper motor of first embodiment of the invention;
Fig. 3 is the stepper motor of Fig. 2, the schematic diagram of the prominent utmost point of its rotor and the canoe of solenoid;
Fig. 4 is the longitudinal profile schematic diagram of a kind of stepper motor of second embodiment of the invention.
100: stepper motor
110: rotor
112: rotating shaft
114: the prominent utmost point
120: stator
122: armature core
124: armature coil
200: stepper motor
210: rotor
212: rotating shaft
214,214a～214d: the prominent utmost point
216,216a, 216b: solenoid
220: stator
222: armature core
224: armature coil
300: stepper motor
310: rotor
312: rotating shaft
314: the prominent utmost point
316a, 316b: solenoid
318a, 318b: feed-through collar
Embodiment
First embodiment
Please refer to Fig. 2, it is the horizontal section schematic diagram of the stepper motor of first embodiment of the invention.Stepper motor 200 mainly is made of rotor 210 and stator 220.Rotor 210 is made of a rotating shaft 212, a plurality of prominent utmost point 214 and a plurality of solenoid 216, and the wherein prominent utmost point 214 for example is the N utmost point or the S utmost point of a permanent magnet, and twisted rotary shaft 212 also protrudes in rotating shaft 212 respectively radially successively.It should be noted that solenoid 216 makes progress in the footpath of rotating shaft 212 respectively, is wound in one of these prominent utmost points 214.Stator 220 is made of a plurality of armature cores 222 and a plurality of armature coil 224, wherein keep a space between the two adjacent armature cores 222, make that each group armature coil 224 is wound on the armature core 222, and each armature core 222 and on armature coil 224, then be surrounded on the outside of rotor 210 successively, and the outer end of armature core 222 connects mutually.When the armature coil 224 of input current to stator 220, make when armature coil 224 produces magnetic field, the prominent utmost point 214 of rotor 210 will be subjected to the influence in the magnetic field of armature coil 224, make rotor 210 rotating shaft 212 axially on rotation, thereby the moment that rotates, and export the external world to via rotating shaft 212.
Please equally with reference to figure 2, because the prominent utmost point 214 of rotor 210 is the N utmost point or the S utmost point of a permanent magnet, therefore use under back or the condition of overhigh temperature long-term, the magnetic that may change the prominent utmost point 214 distributes and flux change, and has influence on rotor 210 original rotating speed and torques of setting.Therefore, for the magnetic flux of the prominent utmost point 214 that increases or reduce rotor 210, the present invention increases by one group of solenoid 216 in addition in the outside of each prominent utmost point 214, and it in footpath of rotating shaft 212 upwards is surrounded on the outside of the prominent utmost point 214.When forward input current during,,, then make the solenoid 216 corresponding reciprocal magnetic fields that produce when reverse input current during to solenoid 216 if when making the corresponding magnetic field that produces positive directions of solenoid 216 to solenoid 216.Therefore, when input current is to solenoid 216 forward or backwards, with the magnetic field that makes that solenoid 216 produces different directions, so as to increasing or reduce the magnetic flux of solenoid 216 its pairing prominent utmost points 214.Therefore, effect by solenoid 216, under long-term use or condition of overhigh temperature, rotor 210 still can be kept identical flux change, or when needing high torque (HT), increase the flux change of rotor 210, or when needing low torque, reduce the flux change of rotor 210, make that the characteristic of stepper motor 200 is perfect more.
In order to illustrate solenoid 216 is how to be wound on the prominent utmost point 214, please also refer to Fig. 2 and Fig. 3, and wherein Fig. 3 is the stepper motor of Fig. 2, the schematic diagram of the prominent utmost point of its rotor and the canoe of solenoid.As shown in Figure 2, the a plurality of prominent utmost point 216 of rotor 210 can launch successively as being prominent utmost point 214a～214d of Fig. 3, as shown in Figure 3, solenoid 216a twines the prominent utmost point 214a of same magnetic (the S utmost point) of space and the periphery of prominent utmost point 214b successively, and another solenoid 216b then twines the prominent utmost point 214c of same magnetic (the N utmost point) of space and the periphery of prominent utmost point 214d successively.Therefore, with solenoid 216a is example, when according to direction of arrow input current during to solenoid 216a, solenoid 216a produces correspondence in the magnetic field of one positive direction, its magnetic line of force is in the direction opposite the magnetic line of force direction of prominent utmost point 214a and prominent utmost point 214b, thereby weaken the magnetic field intensity that prominent utmost point 214a reaches prominent utmost point 214b, and then reduce the flux change of rotor 210.Otherwise, then improve the flux change of rotor 210.Therefore, can change the magnetic field intensity of the prominent utmost point 214 by input current forward or backwards to solenoid 216, and then change the flux change of rotor.
First embodiment of the invention is to make progress in the footpath of the rotating shaft of stepper motor, twining one group of solenoid respectively extremely goes up in the prominent of rotor, and by input current forward or backwards to solenoid, make solenoid produce the magnetic field of different directions, so as to increasing or reduce the magnetic field intensity of the pairing prominent utmost point of solenoid, make rotor under the situation of long-term use or high temperature, still can keep identical flux change, or when needing high torque (HT), can increase the flux change of rotor, or when needing low torque, can reduce the flux change of rotor, make that the characteristic of stepper motor is perfect more.
Second embodiment
The second embodiment of the invention and the first embodiment difference are the position of winding of solenoid and the direction of winding.Please refer to Fig. 4, it is the longitudinal profile schematic diagram of a kind of stepper motor of second embodiment of the invention.
Stepper motor 300 mainly is made of rotor 310 and stator 320.Rotor 310 is made of a rotating shaft 312, a plurality of prominent utmost point 314 and at least one solenoid 316a, and the wherein prominent utmost point 314 for example is the N utmost point or the S utmost point of a permanent magnet, and twisted rotary shaft 312 also protrudes in rotating shaft 312 respectively radially successively.It should be noted that solenoid 316a rotating shaft 312 axially on, be wound in the rotating shaft 312.Stator 320 is made of a plurality of armature cores 322 and the armature coil 324 that twines on it, and each armature core 322 and on armature coil 324, then be surrounded on the outside of rotor 310 successively, and the outer end of armature core 322 connects mutually.When the armature coil 324 of input current to stator 320, make when armature coil 324 produces magnetic field, the prominent utmost point 314 of rotor 310 will be subjected to the influence in the magnetic field of armature coil 324, make rotor 310 rotating shaft 312 axially on rotation, thereby the moment that rotates, and export the external world to via rotating shaft 312.
Please equally with reference to figure 4, as solenoid 316a during via feed-through collar 318a input current, solenoid 316a produces a magnetic field with correspondence, the magnetic field interaction of the prominent utmost point 314 of itself and rotor 310 and the armature coil 324 of stator 320, to make rotor 310 can keep identical flux change, or increase and reduce the flux change of rotor 310.In addition, another solenoid 316b more can arrange in pairs or groups, its winding direction can be identical or in contrast to the winding direction of former solenoid 316a, and by feed-through collar 318b input current, can increase or reduce solenoid 316a and the solenoid 316b institute magnetic field intensity of generation jointly.
Second embodiment of the invention be the rotating shaft of stepper motor axially on, twine at least one group of solenoid in rotating shaft, and by input current forward or backwards to solenoid, make solenoid produce the magnetic field of different directions, so as to changing the flux change of rotor, make rotor under the situation of long-term use or high temperature, still can keep identical flux change, or when needing high torque (HT), can increase the flux change of rotor, or when needing low torque, can reduce the flux change of rotor, make that the characteristic of stepper motor is perfect more.
In sum, the present invention makes progress in the footpath of the rotating shaft of stepper motor, twining one group of solenoid respectively extremely goes up in the prominent of rotor, and by input current forward or backwards to solenoid, make solenoid produce the magnetic field of different directions, so as to increasing or reduce the magnetic field intensity of the pairing prominent utmost point of solenoid.Or the rotating shaft of stepper motor axially on, twine at least one group of solenoid in rotating shaft, and make solenoid produce the magnetic field of different directions to solenoid, so as to changing the flux change of rotor by input current forward or backwards.Therefore, stepper motor of the present invention is under the situation of long-term use or high temperature, its rotor still can be kept identical flux change, or when needing high torque (HT), can increase the flux change of rotor, or when needing low torque, can reduce the flux change of rotor, make that the characteristic of stepper motor is perfect more.
Claims (6)
1, a kind of stepper motor comprises at least: a rotor has a rotating shaft, a plurality of prominent utmost point and a plurality of solenoid; One stator has a plurality of armature cores and a plurality of armature coil, it is characterized in that,
Those prominent utmost points are surrounded on this rotating shaft successively in the described rotor, and protrude in the outer surface of this rotating shaft, and those solenoids upwards are wound in one of those prominent utmost points respectively in the footpath of this rotating shaft;
Those armature cores are surrounded on the outside of this rotor successively in the described stator, and those armature coils upwards are wound in one of those armature cores in the footpath of this rotating shaft respectively.
2, stepper motor as claimed in claim 1 is characterized in that, each those prominent utmost point is respectively the N utmost point of a permanent magnet and S one of in extremely.
3, stepper motor as claimed in claim 1 is characterized in that, the outer end of those adjacent armature cores interconnects.
4, a kind of stepper motor comprises at least: a rotor has a rotating shaft, a plurality of prominent utmost point and at least one solenoid; One stator has a plurality of armature cores and a plurality of armature coil, it is characterized in that,
Those prominent utmost points are surrounded on this rotating shaft successively in the described rotor, and protrude in the outer surface of this rotating shaft, and those solenoids respectively this rotating shaft axially on be wound in this rotating shaft;
Those armature cores are surrounded on the outside of this rotor successively in the described stator, and those armature coils upwards are wound in one of those armature cores in the footpath of this rotating shaft respectively.
5, stepper motor as claimed in claim 4 is characterized in that, each those prominent utmost point is respectively the N utmost point of a permanent magnet and S one of in extremely.
6, stepper motor as claimed in claim 4 is characterized in that, the outer end of those adjacent armature cores interconnects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144536 CN1427533A (en) | 2001-12-19 | 2001-12-19 | Step motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144536 CN1427533A (en) | 2001-12-19 | 2001-12-19 | Step motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1427533A true CN1427533A (en) | 2003-07-02 |
Family
ID=4677654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01144536 Withdrawn CN1427533A (en) | 2001-12-19 | 2001-12-19 | Step motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1427533A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111756211A (en) * | 2019-03-28 | 2020-10-09 | Ghsp公司 | Hybrid stepping motor for adjusting rotor magnetic field by using axial coil |
-
2001
- 2001-12-19 CN CN 01144536 patent/CN1427533A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111756211A (en) * | 2019-03-28 | 2020-10-09 | Ghsp公司 | Hybrid stepping motor for adjusting rotor magnetic field by using axial coil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |