CN2453602Y - Stepping motor - Google Patents
Stepping motor Download PDFInfo
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- CN2453602Y CN2453602Y CN 00260363 CN00260363U CN2453602Y CN 2453602 Y CN2453602 Y CN 2453602Y CN 00260363 CN00260363 CN 00260363 CN 00260363 U CN00260363 U CN 00260363U CN 2453602 Y CN2453602 Y CN 2453602Y
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- rotor
- stator core
- stepping motor
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- shell
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- 238000004804 winding Methods 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000002146 bilateral effect Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model discloses an electric pulse signal drive instrument pointer pivoted step motor, which comprises an outer shell, stator assembly in the shell, the rotor, decelerator constitutes, stator assembly contains a stator core, this stator core has "*" shape bilateral symmetry configuration, there is a cylinder hole corresponding with the rotor external diameter at stator core's intermediate pillar one end and side column intersection, this cylinder hole has three each other to become 120 polar arc on the surface, the rotor rotationally is located the cylinder hole axis, it has a winding to overlap respectively on the iron core of stator core symmetry line both sides. The utility model discloses a step motor, output torque is big, and axial thickness is little, simple structure, and is with low costs. The driving current is small, the sensitivity is high, the work is stable, and the use is wide.
Description
The utility model relates to a kind of execution unit that can convert electric impulse signal to the angular displacement that is directly proportional with umber of pulse, especially a kind of stepping motor.
The driver part that can be applicable at present in the instrument and meter for automation is step part motor, and the bipolar boots stepping motor of the disclosed a kind of double winding of Chinese patent ZL89207595.3 is exactly an example.This stepping motor has that the left and right pole shoe that is separated from each other and two install on pole shoe to each other can be in parallel or the winding that is connected in series.In a week of rotor rotation, the rotor that comprises a pair of magnet radial poles, only be subjected to the effect in twice conversion magnetic field of left and right sides pole shoe, the torque of rotor is little, beat in the rotation process obviously, and the frequency response of rotor is no more than 35Hz, sensitivity is low, being far from suitable requires torque big, uses in the instrument of stability of rotation.
At the problems referred to above, the purpose of this utility model provides a kind of stepping motor, and its output torque is big, highly sensitive, stability of rotation.
For achieving the above object, the utility model provides a kind of stepping motor of following structure, and it comprises a shell, and a field frame assembly is arranged in the shell, a rotor, and a deceleration device that has output shaft that is in transmission connection with rotor constitutes.Described field frame assembly is made of a stator core and two windings, and magnet steel and a drive gear set that described rotor has a pair of magnet radial poles are integral, and described stator core has one and is
Shape, symmetrical configuration, described
There is a cylindrical hole that adapts with rotor diameter in the "T"-shaped intersection of stem and side column in the middle of the shape stator core, form three polar arcs that are mutually 120 ° in the stator core, described rotor is positioned on the described cylindrical hole axis, and described two windings are enclosed within respectively in the stator core of symmetrical center line both sides.
After adopting structure of the present utility model, because stator core has
Shape, symmetrical structure, and in stator core, there are three to be mutually 120 ° of polar arcs, for rotor with a pair of magnet radial poles, when two windings receive outside input timing pulse signal, when in three polar arcs, producing conversion magnetic field, can be subjected to six locational magneticactions of stator core cylindrical hole successively, rotor rotation is steady, and moment is big; There are six substeps in one week of rotor rotation, and is highly sensitive; When inputing to the time sequential pulse conversion of two windings, the convertible rotation direction of rotor is to adapt to the rotating of instrument indication; 600 °/the S of commentaries on classics scooter of rotor of output shaft axle in addition.
Execution mode of the present utility model is provided by following accompanying drawing.
Fig. 1 is the outline drawing of the utility model stepping motor.
Fig. 2 is the cassette mechanism structure front view that Fig. 1 removes upper casing.
Fig. 3 is the structure chart after Fig. 2 removes deceleration device.
Fig. 4 is the front view of upper casing inner face.
Fig. 5 is the initial condition schematic diagram before the stepping motor operation.
Fig. 6 is the time sequential pulse signal waveforms that inputs to two windings.
Below in conjunction with accompanying drawing, execution mode of the present utility model is described specifically.
Fig. 1 to Fig. 6 is a kind of embodiment of the utility model stepping motor.As Fig. 1, Fig. 2, shown in Figure 3, stepping motor has a shell 2, and this shell is combined by upper casing 3 and lower casing 1.A field frame assembly 8 and a rotor 9 are arranged in shell 2.Field frame assembly 8 is made of stator core 6 and two windings 12,14.Stator core 6 has one and is
Shape, symmetrical configuration, it adopts permalloy or pure iron material to make.Be the convenience of making and assembling, the middle stem 25 both sides two opposite edges posts of stator core 6 are releasable connection.At middle stem 25 1 ends of stator core 6 and the "T"-shaped intersection of stator core side column 20 formation a cylindrical hole 26 that adapts with rotor 9 external diameters is arranged, the close pit 21 of uniform and cylindrical hole 26 around radially having three in stator core 6 around this cylindrical hole 26,22,23, one of them pit 23 is on the side column 20 of stator core 6 symmetrical center line, two pits 21 in addition, 22 are distributed in the both sides of symmetrical center line, form cylindrical hole 26 surfaces and pit 21, the magnetic gap of three high magnetic resistance between 22,23 about the about 0.3mm of minimum spacing has the identical polar arc 17 of three sizes that is mutually hexagonal angle thereby make in the stator core, 18,19.On the removable side column of stator core 6 symmetrical center line both sides, be inserted in above-mentioned winding 12 and winding 14 respectively.Have on lower casing 1 inner face three with stator core 6 on three pits, 21,22,23 corresponding locating pieces 27,28,24, three pits 21,22,23 of stator core 6 are embedded in respectively on the limit of three locating pieces 27,28,24 of lower casing 1 inner face and locate.Two terminals at winding 12 are connected with a plug connector 5,6 respectively, and two terminals of another winding 14 also are connected with plug connector (not shown) respectively, and the free end of plug connector is outwards drawn by shell 2 walls, and confession is electrically connected with external devices.
High-performance magnet steel (not shown) and driven wheel 10 coaxial combination that rotor 9 has a magnet radial poles are integral, and it is contained in the cylindrical hole 26 of stator core 6, and the pivot of two ends of rotor is contained in respectively on the corresponding axis hole of upper casing 3 and lower casing 1 inner face.
Have an one end to stretch out the output shaft 4 of shell 2 in shell 2, with the needle shaft as instrument, output shaft 4 is parallel with 9 of rotors.Between the driven wheel 10 of rotor 9 and output shaft 4, a deceleration device that is in transmission connection is arranged, this deceleration device has first idler gear 11 with above-mentioned driven wheel 10 engagements, with first idler gear, 11 coaxial second idler gears 15 that are solidly fixed, with the engagement of second idler gear 15 and constitute with the output shaft 4 coaxial output gears that are connected 13, these gears adopt plastic material to make, first idler gear 11 wherein, second idler gear 15 and output gear 13, adopt resilient plastic material to make, the profile of tooth of first gear 11 is a finger-type, other gear is an involute profile, with gap and the noise that reduces meshed transmission gear.The gear ratio of driven wheel 10, first idler gear 11, second idler gear 15 and output gear 13 is Z1: Z2: Z3: Z4=6: 90: 10: 120.The gearratio of deceleration device is 1: 180, thereby forms rotor 9 revolutions 1 circle, and output shaft 4 changes the corresponding relation at 2 ° of angles.
Since have in the stator core have in three polar arcs that are mutually hexagonal angle and the rotor a pair of along diametric magnet radial poles, two windings on field frame assembly are not during the input timing pulse signal, when promptly static, arbitrary magnetic pole in the rotor is near arbitrary polar arc the time, rotor is paused, so in the one-period of rotor rotation, can pause six positions in cylindrical hole 26 circumference, two synchronizings in one week of formation rotor rotation and the form that each synchronizing has three substeps again.When two windings 12,14 in the field frame assembly 8 are imported same frequency respectively and are had two time sequential pulse signals of phase difference, positive and negative according to phase difference, rotor can clockwise rotate or rotate counterclockwise.Because rotor six substeps that circled, in each substep, the magnet steel in the rotor all is subjected to the promotion that stator core produces the action of a magnetic field power, thereby rotor six the motive force effects of having circled, and the torque of rotor is big.Each substep of rotor, corresponding output shaft only changes 20 ' angle, on instrument, using, the rotation of output shaft, visual experience is much steady than prior art, and out-of-step free under 600 °/S of output shaft rotating speed.
Below the ruuning situation of stepping motor when the input timing pulse signal is done simple narration.
In order to describe operation logic, need the initial state of supposition stepping motor, Fig. 5 shows the magnet steel polarity position of rotor when initial state, and at this moment, the magnet steel S utmost point of rotor and polar arc 17 are inhaled together mutually.
Fig. 6 has provided the time sequential pulse signal waveforms that inputs to two windings, and wherein (a figure) expression inputs to the pulse signal of winding 12, and (b) the figure expression inputs to the pulse signal of winding 14, abscissa I among the figure. II ... VII is constantly.
When in I-II during the period, 1.-2. the line end input zero pulse signal of winding 12, and 4.-3. end input undersuing of winding 14, winding 14 produces magnetic flux, make polar arc 18 be the S utmost point, polar arc 17 and polar arc 19 are the N utmost point, and magnetic flux is less, and the N end of rotor 9 magnet steel is attracted by the S end of polar arc 18, clockwise rotate 60 °, when the S of magnet steel N end and polar arc 18 was extremely relative, rotor rotation stopped, and has finished a substep.
During the period, 1.-2. line end of winding 12 is imported positive pulse signal in II-III, and 4.-3. end of winding 14 is zero input, and winding 12 produces magnetic fluxs, and making polar arc 19 is the N utmost point.Polar arc 17 and polar arc 18 are the S utmost point, and magnetic flux is less, and the S of rotor 9 magnet steel end is attracted by the N end of polar arc 19, clockwise rotates 60 °, and when the N of magnet steel S end and polar arc 19 was extremely relative, rotor rotation stopped, and has finished a substep.
In III-IV during the period, 4.-3. the end of 1.-2. line end of winding 12 and winding 14 is imported positive pulse signal respectively, the magnetic flux of two winding generations makes polar arc 17 be the S utmost point, 18 and 19 are the N utmost point, the magnet steel N utmost point is subjected to the S utmost point of polar arc 17 to attract to clockwise rotate 60 °, when extremely relative, rotor stops operating, and has finished a substep again to the S of magnet steel N end and polar arc 17.At this moment rotor has constantly changeed half-turn from initiating terminal to IV, has striden a synchronizing.
In IV-V period, 1.-2. end input zero pulse signal of winding 12,4.-3. end input positive pulse signal of winding 14, polar arc 18 is the N utmost point, the S end of magnet steel is attracted by the N utmost point of polar arc 18, clockwise rotates 60 °, has finished a substep.
In V-VI period, 1.-2. the end input undersuing of winding 12,4.-3. the end of winding 14 is zero input, winding 12 produces magnetic flux makes polar arc 19 be the S utmost point, polar arc 17 and 18 is the lower N utmost point of magnetic flux, and magnet steel N end is attracted by the S utmost point of polar arc 19, clockwise rotates 60 ° to the N end of magnet steel and polar arc 19 when relative, rotor stops operating, and has finished a substep.
In VI-VII period, 1.-2. the end of winding 12 and 4.-3. end of winding 14 are imported undersuing respectively, the magnetic flux of two winding generations makes polar arc 17 be the N utmost point, and polar arc 18 and 19 is the S utmost point, and the S utmost point of rotor magnetic steel is attracted by the N utmost point of polar arc 17, clockwise rotate 60 °, when relative, rotor stops operating, after at this moment rotor has changeed a week to the S of magnet steel end and polar arc 17, get back to original position, finished two synchronizings altogether.
When the pulse signal that inputs to two windings was imported by Fig. 6 (a) and Fig. 6 (b), rotor will steadily ceaselessly clockwise rotate.
According to symmetry principle, input to winding B and the former electric impulse signal that inputs to winding B changed into input to the A winding if the former electric impulse signal that inputs to winding A changed into, at this moment rotor will be rotated counterclockwise by the original position of figure.
The electric impulse signal of stepping motor work can be by transducer, as velocity transducer, and cooling-water temperature sensor, the signal of telecommunication of output such as fuel-quantity transducer is through amplifying, and the output after the microprocessor processes obtains, and because of not belonging to scope of the present utility model, is not described herein at this.
For the output shaft 4 that makes the gauge pointer of packing into has an original position before work, be connected with a block 16 (referring to Fig. 2) in output gear 13 sides, with corresponding position, link stopper 16 position a circular groove 29 (referring to Fig. 4) is arranged on upper casing 3 inner faces, groove 29 right central angle be about 320 ° or design according to the dial plate needs, described block puts in the groove 29 of upper casing 3 inner faces, when this link stopper rotates with output gear, can be along moving in the groove.About 315 ° of the angle of rotation of pointer output shaft is housed
Claims (3)
1. one kind is used to drive the stepping motor that gauge pointer rotates, it comprises a shell (2), a field frame assembly (8) is arranged in the shell, a rotor (9), a deceleration device that has output shaft (4) that is in transmission connection with rotor (9) constitutes, described field frame assembly (8) is by stator core (6) and two windings (12,14) constitute, described rotor (9) has the magnet steel and a driven wheel (10) of a pair of magnet radial poles and forms one, and it is characterized in that: described stator core (6) has one and is
The symmetrical configuration of shape, described
The middle stem (25) of stator core (6) has a cylindrical hole (26) that adapts with rotor (9) external diameter with the "T"-shaped intersection of side column (20), form last three polar arcs (17 that are mutually 120 ° of stator core (6), 18,19), described rotor (4) is positioned on described cylindrical hole (26) axis, and described two windings are enclosed within respectively on the stator core (6) of stator core (6) symmetrical center line both sides.
2. stepping motor according to claim 1, the gearratio that it is characterized in that deceleration device is 1: 180.
3. stepping motor according to claim 1 and 2, it is characterized in that the link stopper (16) that has one to rotate in the side of described output gear (13) with output gear, there is a circular groove (29) (16) corresponding position, position of determining with shelves on the inner face of upper casing (2), and described link stopper (16) puts in the groove (29) on the upper casing inner face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00260363 CN2453602Y (en) | 2000-11-17 | 2000-11-17 | Stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00260363 CN2453602Y (en) | 2000-11-17 | 2000-11-17 | Stepping motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2453602Y true CN2453602Y (en) | 2001-10-10 |
Family
ID=33616183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00260363 Expired - Fee Related CN2453602Y (en) | 2000-11-17 | 2000-11-17 | Stepping motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2453602Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847849A (en) * | 2014-02-19 | 2015-08-19 | 矢崎总业株式会社 | Power transmission gear unit and vehicle instrument |
-
2000
- 2000-11-17 CN CN 00260363 patent/CN2453602Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847849A (en) * | 2014-02-19 | 2015-08-19 | 矢崎总业株式会社 | Power transmission gear unit and vehicle instrument |
| US9638311B2 (en) | 2014-02-19 | 2017-05-02 | Yazaki Corporation | Power transmission gear unit and vehicle instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |