CN200972824Y - Hall rotation transformer - Google Patents
Hall rotation transformer Download PDFInfo
- Publication number
- CN200972824Y CN200972824Y CN 200620068068 CN200620068068U CN200972824Y CN 200972824 Y CN200972824 Y CN 200972824Y CN 200620068068 CN200620068068 CN 200620068068 CN 200620068068 U CN200620068068 U CN 200620068068U CN 200972824 Y CN200972824 Y CN 200972824Y
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- CN
- China
- Prior art keywords
- motor
- stator
- stator core
- ring
- hollow shaft
- Prior art date
- 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 - Lifetime
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Abstract
The utility model discloses a Hall rotating transformer that comprises linear Hall components, permanent-magnet rings, a hollow shaft, a stator shell, a stator core and a printed circuit board connecting Hall components. The transformer is characterized in that the stator core is a ring-type one, and at least two installation holes are provided on the stator core with an interval of 90 degrees. The linear Hall components are fixed in the installation holes, and the permanent-magnet ring is a magnetic ring having sinusoidally distributed surface magnetic field at both poles. The hollow shaft is rigidly connected with a motor shaft. The structure makes the transformer irrelevant to the pole pairs of the motor, and there is only one definite zero position during on turn of the motor. As a result, this saves the bearing for the stator and the rotor to support each other, the structure for mounting the bearing, and the flexible connection structure between the stator and the motor. Therefore, the utility model has a simple production process and structure, allows use to motors having different pole pairs, and facilitates to inspection of the absolute angle position because there is only one definite zero position in one turn of the motor.
Description
Technical field
The utility model relates to a kind of resolver that is used for brushless servomotor.
Background technology
Present prior art, the Chinese patent ZL patent No.: 02271092.2, a kind of Hall resolver comprises the printed board of linear hall element, permanent magnet magnetic ring, hollow shaft rotor, stator cage, rear chassis, stator core and Hall integrated circuit, four linear hall elements are installed on the stator core, 90 ° of electrical degrees mutually stagger, specific is many to utmost point magnet ring, and two ball bearings of support stator are arranged in the middle of the rotor, and the stator front end has the spring leaf that connects usefulness.Existing problems are: adopt specific many permanent magnet magnetic rings to the utmost point, to magnetic pole uniformity requirement height, motor to the different poles logarithm can not be general, in a circle scope, be difficult to accomplish definite unique zero-bit, the detection of inconvenient absolute angular position, monolithic construction and complex process are difficult to miniaturization.
Summary of the invention
The purpose of this utility model is: a kind of Hall resolver is provided, and it is technology, simple in structure not only, can be common to the motor of different poles logarithm, and in a circle scope definite unique zero-bit is arranged, and is convenient to do absolute value angle position probing.
The utility model is achieved in that a kind of Hall resolver comprises the printed circuit board of linear hall element, permanent magnet magnetic ring, hollow shaft, stator cage, stator core and connection Hall element, permanent magnet magnetic ring is fixed on the hollow shaft, its special character is: described stator core is annular, 90 ° of space angles at least two installing holes that distributing at interval on stator core, linear hall element is fixed in the installing hole, and described permanent magnet magnetic ring is an a pair of magnet ring that has the Sine distribution Surface field; Hollow shaft and motor shaft are fixedly connected.
Described Hall resolver, its special character is: stator cage one end has a groove, and compressing tablet snaps in the ring-shaped groove, and compressing tablet is fixed on the bonnet of motor, and compressing tablet detachably connects with the bonnet of motor.
Described Hall resolver, its special character is: on the stator core at interval 90 ° of space angles uniform four installing holes.
The utility model Hall resolver, described stator core is annular, 90 ° of space angles at least two installing holes that distributing at interval on stator core, linear hall element is fixed in the installing hole, and described permanent magnet magnetic ring is an a pair of magnet ring that has the Sine distribution Surface field; Hollow shaft and motor shaft are fixedly connected.Owing to adopt such structure, 90 ° of space angles are not the 90 ° of electrical degrees in interval at interval, thus irrelevant with the number of pole-pairs of motor, versatility is arranged; Adopt a pair of magnetic pole permanent magnetic ring, irrelevant with the number of pole-pairs of motor, versatility is arranged, there are not many problems, and in a circle scope, definite unique zero-bit arranged inhomogeneities between the utmost point, be convenient to do absolute value angle position probing; Adopt stator and rotor to divide body structure, rotor is fixed on the motor reel, stator is fixed on the motor bonnet, save bearing and bearings mounted structure that rotor supports mutually, saved the resilient connection structure between stator and the motor, simplified manufacturing process and structure to greatest extent, so it is technology, simple in structure not only, can be common to the motor of different poles logarithm, and in a circle scope, definite unique zero-bit be arranged, be convenient to do absolute value angle position probing.
Description of drawings
Fig. 1 is a cutaway view of the present utility model.
Fig. 2 is a principle schematic of the present utility model.
Fig. 3 is the utility model linear hall element output signal curve.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1, a kind of Hall resolver comprises linear hall element 4, permanent magnet magnetic ring 3, hollow shaft 2, stator cage 7, stator core 5 and connects the printed circuit board 8 of Hall element, permanent magnet magnetic ring 3 is fixed on the hollow shaft 2, the ring-shaped groove 10 interior compressing tablets 6 that snap in stator cage 7 one ends are screwed on the bonnet of motor, just stator can be fixed, the scalable stator is in the position of circumferencial direction when unclamping this screw, compressing tablet 6 is a packing ring or is the circular arc fanning strip, compressing tablet 6 has three, also can increase and decrease the quantity of compressing tablet 6 as required; On the stator core 5 at interval 90 ° of space angles uniform four installing holes 9, as shown in Figure 2, counterclockwise successively linear hall element 4S1,4C1,4S2 and 4C2 are installed in the installing hole 9, permanent magnet magnetic ring 3 can produce the Surface field of a pair of utmost point Sine distribution, one screw 1 is arranged on the hollow shaft 2, and available trip bolt is fixed on hollow shaft 2 on the motor shaft.
Shown in Figure 3, V
1, V
2, V
3, and V
4Be respectively the signal output waveform of linear hall element 4S1,4C1,4S2,4C2, V
a=V
1-V
3, V
b=V
1-V
3, then being synthetic sine and cosine two-phase output waveform, it can compensate eccentric influence, so can improve precision; If the distributing position precision height of linear hall element, be that concentricity is when very good, just do not need this compensation, 4 needs half volume configurations of linear hall element, promptly adopt two, only have linear hall element 4S1, linear hall element 4C1 or linear hall element 4S2, linear hall element 4C2 to get final product.
Claims (3)
1, a kind of Hall resolver comprises the printed circuit board of linear hall element, permanent magnet magnetic ring, hollow shaft, stator cage, stator core and connection Hall element, permanent magnet magnetic ring is fixed on the hollow shaft, it is characterized in that: described stator core is annular, 90 ° of space angles at least two installing holes that distributing at interval on stator core, linear hall element is fixed in the installing hole, and described permanent magnet magnetic ring is an a pair of magnet ring that has the Sine distribution Surface field; Hollow shaft and motor shaft are fixedly connected.
2, Hall resolver according to claim 1 is characterized in that: stator cage one end has a ring-shaped groove, and compressing tablet snaps in the groove, and compressing tablet is fixed on the bonnet of motor, and compressing tablet detachably connects with the bonnet of motor.
3, Hall resolver according to claim 1 and 2 is characterized in that: on the stator core at interval 90 ° of space angles uniform four installing holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620068068 CN200972824Y (en) | 2006-11-17 | 2006-11-17 | Hall rotation transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620068068 CN200972824Y (en) | 2006-11-17 | 2006-11-17 | Hall rotation transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200972824Y true CN200972824Y (en) | 2007-11-07 |
Family
ID=38884078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620068068 Expired - Lifetime CN200972824Y (en) | 2006-11-17 | 2006-11-17 | Hall rotation transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200972824Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102640235A (en) * | 2009-11-30 | 2012-08-15 | 伊斯帕诺-絮扎公司 | Easily installed rotary transformer |
| WO2013044441A1 (en) * | 2011-09-27 | 2013-04-04 | 浙江博望科技发展有限公司 | Rotary transformer and motion encoder using the transformer |
| CN104215167A (en) * | 2014-09-23 | 2014-12-17 | 扬州大祺自动化技术有限公司 | Electronic number displayer |
-
2006
- 2006-11-17 CN CN 200620068068 patent/CN200972824Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102640235A (en) * | 2009-11-30 | 2012-08-15 | 伊斯帕诺-絮扎公司 | Easily installed rotary transformer |
| WO2013044441A1 (en) * | 2011-09-27 | 2013-04-04 | 浙江博望科技发展有限公司 | Rotary transformer and motion encoder using the transformer |
| CN103222020B (en) * | 2011-09-27 | 2015-12-09 | 浙江博望科技发展有限公司 | A kind of resolver |
| CN104215167A (en) * | 2014-09-23 | 2014-12-17 | 扬州大祺自动化技术有限公司 | Electronic number displayer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071107 |
|
| EXPY | Termination of patent right or utility model |