CN2429834Y - Stepping motor driving kilowatt meter - Google Patents
Stepping motor driving kilowatt meter Download PDFInfo
- Publication number
- CN2429834Y CN2429834Y CN 00242439 CN00242439U CN2429834Y CN 2429834 Y CN2429834 Y CN 2429834Y CN 00242439 CN00242439 CN 00242439 CN 00242439 U CN00242439 U CN 00242439U CN 2429834 Y CN2429834 Y CN 2429834Y
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- China
- Prior art keywords
- rotor
- stator
- pairs
- stepping motor
- magnetic pole
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- Expired - Fee Related
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Abstract
The utility model relates to a stepping motor driving kilowatt meter. A rotor or a stator of a stepping motor is provided with multiple pairs of magnetic poles, a complete turn can be finished by four steps of the action of the rotor, namely, each turning step which the rotor takes is not greater than 90 DEG, and when every time the rotor starts, active component of electromagnetic force which rotor receives is at least 80 percents of the electromagnetic force. The utility model has the advantages of higher efficiency, large driving torque, and homogeneous driving torque. Simultaneously, owing to slow rotational speed, change gears can be reduced, a counter has a compact structure, and the reliability of the counter can be enhanced.
Description
The utility model relates to the register that a kind of electric energy meter is used, particularly by many to extremely stepper motor driven register.
Well-known stepping motor driving type register, the rotor of its stepper motor and stator all have only a pair of magnetic pole, rotor revolve turn around by two the step finish.Each step of the rotor of two-step motor will be rotated the angle of 180 degree, wherein rotor will turn over the wide-angle of 150 degree under the electromagnetic torque effect, when rotor starts at every turn, the electromagnetic force component (active constituent) of its tangent to periphery direction has only 26% of electromagnetic force, as seen its efficient is very low, rotating torque is little and inhomogeneous, has influenced the reliability of register.In addition, a pair of utmost point stepper motor needs more reduction gearing, and complex structure assembles loaded down with trivial detailsly, also is a factor that influences the register reliability.
The purpose of this utility model provide a kind of driving moment big and evenly, simplify gear, simple in structure, reliable stepping motor driving type register.
The purpose of this utility model is achieved in that it is made up of register assembly, gear, stepper motor frame, stator, rotor, armature spindle, rotor gear, coil, magnetic shielding cover, stepper motor stator magnet number of poles is 1: 3 or 3: 1 or 1: 1 with the ratio of rotor magnetic pole number, and wherein 1: 1 o'clock stator and rotor all have two pairs or more magnetic pole.
When the ratio of stepper motor stator magnet number of poles and rotor magnetic pole number was 1: 1, stator and rotor all had three pairs of magnetic poles.
Advantage of the present utility model is: the angle that each step of rotor turns over is not more than 90 degree, and during each rotor startup, the active constituent of its electromagnetic force is at least 80% of electromagnetic force, and efficient is higher, and driving moment is big and evenly.Simultaneously, under the identical condition of current pulse frequency, the rotating speed of a pair of utmost point stepper motor of many rotating ratios to utmost point stepper motor slow at least half, can reduce speed gear, make that register compact conformation, assembling process are simplified, reliability improves.
Fig. 1 is the utility model structural representation.
Fig. 2 is the stepper motor structural representation of three pairs of magnetic pole of the stator and three pairs of rotor magnetic poles.
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, 2: wherein stator 5 has three pairs of magnetic poles when coil 4 feeds electric current, and rotor 8 also has three pairs of permanent magnet poles.When coil 4 no currents, rotor 8 makes rotor be in balance direction (be assumed to 0 degree direction, six balance directions are evenly distributed on 360 degree altogether) by the location torque of self permanent-magnetic field generation; When coil 4 fed the positive polarity electric current, the magnetic field interaction of the magnetic field of stator 5 and rotor 8 produced electromagnetic torque, made rotor 8 forward rotate about 50 degree; After the current vanishes, rotor 8 is subjected to the location torque effect to be rotated further next balance direction (60 degree direction), and this balance direction is opposite with the polarity of a last balance direction rotor 8; When coil fed the negative polarity electric current, rotor 8 continued to clockwise rotate about 110 degree directions, and after the current vanishes, rotor 8 turns to 120 degree directions, finishes a work period, and three work periods make rotor 8 rotate a circle.During rotor 8 each startups, the active constituent of its electromagnetic force is 89% of an electromagnetic force; It drives armature spindle 9 and rotor gear 3 rotates, and drives gear 2, drives 1 work of register assembly again.Stator 5 is fixed on the stepper motor frame 7, armature spindle 9 also kink on stepper motor frame 7.Magnetic shielding cover 6 is to disturb as the shielding external magnetic field.
When the ratio of stepper motor stator and the number of magnetic poles of rotor is 1: 3, with a pair of magnetic pole of the stator and three pairs of rotor magnetic poles is example, stator has a pair of magnetic pole when coil feeds electric current, rotor has three pairs of permanent magnet poles, having six balance directions is evenly distributed on 360 degree, its principle of work is identical with three pairs of utmost point rotor stepper motors with above-mentioned three pairs of utmost point stators, just in per step work, only there is a pair of rotor magnetic pole to work, the effect of other two pairs of rotor magnetic poles is cancelled out each other, so driving moment is less.
When the ratio of stepper motor stator and the number of magnetic poles of rotor is 3: 1, with three pairs of magnetic pole of the stator and a pair of rotor magnetic pole is example, stator has three pairs of magnetic poles when coil feeds electric current, rotor has a pair of permanent magnet poles, having six balance directions is evenly distributed on 360 degree, its principle of work is identical with three pairs of utmost point rotor stepper motors with above-mentioned three pairs of utmost point stators, just in per step work, only there is a pair of magnetic pole of the stator to work, the effect of other two pairs of magnetic pole of the stator is cancelled out each other, so driving moment is less.
As shown in Figure 1, when magnetic pole of the stator was 1 pair or 2 pairs, rotor magnetic pole was 3 pairs or 6 pairs; When rotor magnetic pole was 1 pair or 2 pairs, magnetic pole of the stator was 3 pairs or 6 pairs; When the number of magnetic poles of stator and rotor was identical, they had two pairs or more magnetic pole respectively.Like this, rotor will move for four steps at least and just rotate a complete circle.Rotor is made by permanent-magnet steel, and it and armature spindle, rotor gear are connected as a single entity, and during rotor rotation, rotor gear drives gear, drives the work of register assembly again.Magnetic shielding cover disturbs as the shielding external magnetic field.
Claims (2)
1, a kind of stepping motor driving type register, form by register assembly, gear, stepper motor frame, stator, rotor, armature spindle, rotor gear, coil, magnetic shielding cover, it is characterized in that the stepper motor stator magnet number of poles and the ratio of rotor magnetic pole number are 1: 3 or 3: 1 or 1: 1, wherein 1: 1 o'clock stator and rotor all have two pairs or more magnetic pole.
2, the stepping motor driving type register described in claim 1 is characterized in that stator and rotor all have three pairs of magnetic poles when the ratio of stepper motor stator magnet number of poles and rotor magnetic pole number is 1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00242439 CN2429834Y (en) | 2000-07-16 | 2000-07-16 | Stepping motor driving kilowatt meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00242439 CN2429834Y (en) | 2000-07-16 | 2000-07-16 | Stepping motor driving kilowatt meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2429834Y true CN2429834Y (en) | 2001-05-09 |
Family
ID=33602591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00242439 Expired - Fee Related CN2429834Y (en) | 2000-07-16 | 2000-07-16 | Stepping motor driving kilowatt meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2429834Y (en) |
-
2000
- 2000-07-16 CN CN 00242439 patent/CN2429834Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| FG1K | Grant of 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 |