CN208445463U - Rotary transformer - Google Patents
Rotary transformer Download PDFInfo
- Publication number
- CN208445463U CN208445463U CN201821253313.8U CN201821253313U CN208445463U CN 208445463 U CN208445463 U CN 208445463U CN 201821253313 U CN201821253313 U CN 201821253313U CN 208445463 U CN208445463 U CN 208445463U
- Authority
- CN
- China
- Prior art keywords
- rotor
- protrusion
- stator
- rotary transformer
- flat part
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/204—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils
- G01D5/2046—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils by a movable ferromagnetic element, e.g. a core
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
- G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
- G01P13/045—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement with speed indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K24/00—Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The rotary transformer of the utility model includes: the stator of magnetic material, is circumferentially formed with multiple teeth portion at predetermined intervals；And the rotor of magnetic material, positioned at the outside of the stator, and can be pivoted about relative to the stator with rotary shaft, and cooperate with the stator to change gap magnetic conductivity, wherein, the rotor includes: protrusion, is protruded in outward direction from periphery；And flat part, the circular circumference of the rotor is connected to from the two sides lower end of the protrusion.
Description
Technical field
The present invention relates to a kind of rotary transformer (resolver), more specifically, are related to a kind of outer-rotor type (outer
Type) rotary transformer.
Background technique
When controlling rotating device, such as when control motor, it need to precisely and rapidly detect rotation information.It is revolved in control
When rotary device, the movement or rotation of rotary body need to be accurately measured by the way that rotation angle detection apparatus on the rotary shaft is arranged
Position.Be taken as this method come using detector, have rotary transformer (resolver) and encoder (encoder),
These detectors are respectively provided with merits and demerits.Wherein, rotary transformer directly detects the absolute position of rotor, according to rotor
Change in location calculates direction of rotation and revolving speed.
Rotary transformer is a kind of revolving speed for accurately measuring motor and the sensor for rotating angle.In general, rotation
The magnet exciting coil and output winding of transformer are respectively positioned on stator, have oval or multipole shape rotor along the stator circumference
Positioned at the inner or outer side of stator.The rotary transformer that rotor is located on the outside of stator is known as outer-rotor type (outer type) rotation
Transformer, the rotary transformer that rotor is located on the inside of stator are known as inner-rotor type (inner type) rotary transformer.Turn inside
In subtype rotary transformer, it is formed with protrusion on the hollow inner peripheral surface between setting in the rotor, protrusion is fixedly secured to shape
At in the slot in the rotary shaft of rotating device.On the contrary, in outer-rotor type rotary transformer, for rotor to be fixed on rotation
The protrusion of the rotary shaft of device is not formed on rotor, but processes rotary shaft with fixed rotor.Therefore, rotating device is processed
Rotary shaft can generate extra charge.Therewith, it may be considered that similarly with inner-rotor type rotary transformer, rotate and become in outer-rotor type
Protrusion is formed on the outer peripheral surface of the rotor of depressor, and protrusion is fixed on the method in the slot of rotation shaft side, but due to outer rotor
The characteristic of type rotary transformer, if the curvature of the circular arc formed on the coupling part reduced between the outer peripheral surface and protrusion of rotor
Then there is the burn failure for punch process rotor and cause to shorten the service life, on the contrary, if increasing curvature half in radius
Diameter, then the coupling part between the outer peripheral surface and protrusion of rotor is stuck in the entrance side corner angle for being formed in the slot of rotation shaft side and occurs
It interferes, rotor cannot be completely installed.
Summary of the invention
The present invention proposes that its purpose is to provide a kind of rotors to be located at outer turn on the outside of stator to solve the above-mentioned problems
Subtype rotary transformer can be fully ensured and be used for by rotor without the rotation shaft side for being interferingly fastened on rotating device
The service life of the mold of punch process rotor.
The rotary transformer of one side includes: the stator of magnetic material, is circumferentially formed with multiple teeth portion at predetermined intervals；
And the rotor of magnetic material can be pivoted about positioned at the outside of the stator relative to stator and with rotary shaft,
And cooperate with the stator to change gap magnetic conductivity, wherein the rotor includes: protrusion, is protruded in outward direction from periphery；
And flat part, the circular circumference of the rotor is connected to from the two sides lower end of the protrusion.
The distance between starting point and the rotor center of the flat part nearest from the protrusion are smaller than described turn
The radius of the circular circumference of son.
Angle between the two sides of the protrusion and the flat part can be 90 degree or more.
Multiple protrusions can be formed in the periphery of the rotor.
The distance between starting point and the rotor center of the flat part nearest from the protrusion, with the rotor
The difference of the radius of circular circumference can be 0.3mm or more.
Circular arc can be formed between the two sides lower end and the flat part of the protrusion.
The radius of curvature of the circular arc can be 0.3mm or more.
According to an embodiment, it can be ensured that the protrusion formed on the rotor outer periphery of outer-rotor type rotary transformer it is firm
Property.
It can be prevented according to an embodiment using the protrusion formed on the rotor outer periphery of outer-rotor type rotary transformer
Rotor is mounted on to interference when rotor bearing component.
According to an embodiment, the punching press when periphery by solving manufacture outer-rotor type rotary transformer has the rotor of protrusion
Mold Fast Wearing and the problem of shorten the service life, it can be ensured that the cost competitiveness of rotary transformer.
Detailed description of the invention
Fig. 1 is the top view of the rotary transformer of one embodiment of the invention.
Fig. 2 is the perspective view of the rotor bearing component for the rotor of installation diagram 1.
Fig. 3 is the enlarged drawing of the part A of the rotor bearing component of Fig. 2.
Fig. 4 is the figure of the protrusion shape for indicating the rotor of one embodiment of the invention and the slot of rotor bearing component.
Fig. 5 is the figure of the protrusion shape for indicating the rotor of another embodiment of the present invention and the slot of rotor bearing component.
Fig. 6 is the figure of the rotor projection point shape for indicating further embodiment of this invention and the slot of rotor bearing component.
Fig. 7 is the figure for indicating the protrusion shape of the rotor of Fig. 5 and Fig. 6 simultaneously.
Specific embodiment
By the following detailed description about attached drawing, definitely above-mentioned objects, features and advantages, thus this field skill
Art personnel can easily implement technical idea of the invention.In addition, judgement may not be necessary when being illustrated to well-known technique
In the case that purport of the invention is obscured on ground, detail explanation is omitted.Hereinafter, referring to attached drawing, to of the invention preferred one
Embodiment is described in detail.
Fig. 1 is the top view of the rotary transformer of one embodiment of the invention, and Fig. 2 is the rotor for the rotor of installation diagram 1
The perspective view of supporting member, Fig. 3 are the enlarged drawings of the part A of the rotor bearing component of Fig. 2.
Referring to figs. 1 to Fig. 3, the rotary transformer of the present embodiment includes: the stator 110 of magnetic material, circumferentially (outer
Circumference multiple teeth portion 111 and stator slot (slot) 112) have been alternatively formed；And the rotor 120 of magnetic material, position
In the outside of the stator 110, and can be rotated centered on rotary shaft relative to the stator 110, and with the stator
110 cooperations are to change gap magnetic conductivity (gap permeance).
Stator 110 is following round ferromagnetic: relative to rotor 120 across gap (air gap) in opposite directions, circumferentially
It is spaced from each other specified interval and is formed with multiple teeth portion 111, and be formed with stator slot 112 between adjacent teeth portion 111.Stator 110
It can be made processing in a manner of being alternatively formed multiple teeth portion 111 and stator slot 112 outward magnetic steel plate and being laminated
Make.According to embodiment, it can be inserted into and run through for rotary shaft in the through-hole that is centrally formed with of stator 110, the through-hole.This
When, rotary shaft and stator 110 are not connected to each other, and rotary shaft runs through along through-hole.
The insulating boot of injection molding part can be provided as in the upper and lower surface of stator 110.Stator 110 is arranged in insulating boot
Upper and lower surface, therefore be made of upper portion insulating cover and lower part insulating boot.Insulating boot, which is formed with along periphery across certain intervals, to be covered
Multiple tooth insulation divisions of the teeth portion 111 of lid stator 110.The upper and lower surface of stator 110 is arranged in insulating boot, therefore tooth insulation division covers
The upper and lower surface of lid teeth portion 111.In the state that insulating boot setting is fixed on the upper and lower surface of stator 110, twined in tooth insulation division
Coiling.That is, coil is not directly contacted with teeth portion 111, but it is wrapped in teeth portion 111 across insulation division.Coil can be by single-phase
Magnet exciting coil and two-phase output winding are constituted.An output winding exports sinusoidal signal, remaining output in two-phase output winding
Coil exports cosine signal.If driving voltage is applied to magnet exciting coil and rotates rotary shaft, from the first output winding with
Second output winding exports sinusoidal signal and cosine signal, by analyzing the signal, it is known that the rotation angle of rotary transformer.
Rotor 120 is the annular ferromagnetic that inside is provided with the stator 110.Rotor 120 can have rule by lamination
The magnetic steel plate of thickness is determined to be formed.Rotor 120 is disposed on the ferromagnetic of exterior (outer) type in 110 outside of stator, is
It is pivoted about with rotary shaft, and cooperated with the stator 110 to change gap magnetic conductivity, in the inner circumferential of rotor to advise
Determine angle and is arranged at intervals with multiple circular arcs.That is, the inner circumferential of rotor 120 is substantially in sinusoidal shape.Rotor 120 be mounted on
On the rotor bearing component 210 that the rotary shaft of rotating device combines, to be rotated together in rotary shaft rotation with rotary shaft.For
Rotor 120 is mounted on rotor bearing component 210, is formed with the protrusion protruded in outward direction in the periphery of rotor 120
121.As shown in Figures 2 and 3, it is formed on the rotor bearing component 210 for installing rotor 120 and is inserted into rotor 120
Protrusion 121 slot 211.According to the position of the protrusion 121 of rotor 120 and quantity, in the corresponding position of rotor bearing component 210
On be formed with the slot 211 of corresponding number.It is preferred that at least two protrusions 121 are arranged on rotor 120.
Hereinafter, various shapes to 121 part of protrusion of rotor 120 and by each shape and rotor bearing component 210
The combination of slot 211 is described in detail.
Fig. 4 is 121 partial shape of protrusion and rotor bearing component 210 for indicating the rotor 120 of one embodiment of the invention
The figure of slot 211.In the present embodiment referring to Fig. 4, the protrusion 121 of rotor 120 be from the circular circumference of rotor 120 in outward direction
The quadrilateral shape of protrusion, the coupling part between the two sides lower end of the protrusion 121 of rotor 120 and the circular circumference of rotor 120
On be formed with the circular arc 121a with defined radius of curvature.Rotor 120 is made by being laminated multiple magnetic steel plates.It will turn
In the case that coupling part between the side lower end of protrusion 121 and the circular circumference of rotor 120 of son 120 is made right angle, punching
Compression mould also needs rectangular shape in the same manner, therefore the rectangular shaped part wears of stamping die lead to the longevity for shortening mold fastly
Life.Therefore, it is formed on the coupling part between the two sides lower end of the protrusion 121 of rotor 120 and the circular circumference of rotor 120
Circular arc 121a with defined radius of curvature.The smaller closer right angle of the radius of curvature of circular arc 121a, this with as described above that
Sample can shorten the service life of mold.Therefore, the radius of curvature of circular arc 121a needs big, if but the radius of curvature of circular arc 121a become larger,
It can then be interfered between the inlet corner angle 211a of the slot 211 of the circular arc 121a and rotor bearing component 210.That is, prominent
Rise 121 with slot 211 be completely combined before contact.In this way, in the present embodiment referring to Fig. 4, if reducing the curvature half of circular arc 121a
Diameter, then the lost of life of stamping die increases the curvature half of circular arc 121a if the stamping die lost of life is solved the problems, such as
Diameter can then interfere.
Fig. 5 is 121 partial shape of protrusion and rotor bearing component for indicating the rotor 120 of another embodiment of the invention
The figure of 210 slot 211.In the present embodiment referring to Fig. 5, the protrusion 121 of rotor 120 is from the outer outer circumferential side of rotor 120
Interconnecting piece to the quadrilateral shape of protrusion, between the two sides lower end of the protrusion 121 of rotor 120 and the circular circumference of rotor 120
Divide and is formed with recess portion 121b.Recess portion 121b is formed if so, then can be avoided and rotor 120 is installed to rotor bearing component 210
When interference.But when manufacture rotor 120, power focuses on stamping die corresponding on the part of recess portion 121b, may cause mould
Tool damage.That is, the protrusion part of shape corresponding with recess portion 121b is formed in stamping die, power is focused on the protrusion part
A possibility that leading to damage, is high.In addition, rotor 120 is manufactured by being laminated multiple magnetic steel plates, in lamination process, because
Recess portion 121b may result in the end portion bending of protrusion 121.
Fig. 6 is 121 partial shape of protrusion and rotor bearing component for indicating the rotor 120 of another embodiment of the invention
The figure of 210 slot 211.In the present embodiment referring to Fig. 6, the protrusion 121 of rotor 120 is from the outer outer circumferential side of rotor 120
To the quadrilateral shape of protrusion.The part of the circular circumference of rotor 120 is connected to from the two sides lower end of the protrusion 121 of rotor 120
On be formed with flat part 122, on the coupling part between the flat part 122 and the lower end of the two sides of the protrusion 121
It is formed with the circular arc 121c with defined radius of curvature.Flat part 122 refers to the flat structures of the straight line of non-curve.At this point,
Starting point 122a and the distance between the center of the rotor 120 C from the nearest flat part 122 of the protrusion 121 needs small
In the radius R1 of the circular circumference of the rotor 120.If the starting point from the nearest flat part 122 of the protrusion 121
The distance between the center of 122a and the rotor 120 C is greater than the radius R1 of the circular circumference of the rotor 120, then in protrusion
Before 121 are completely combined with slot 211, circular arc 121c understands the entrance side of contact groove 211 and interferes.In addition, the two of protrusion 121
Angle between side and flat part 122 need to be for 90 degree more than and less than 180 degree.If the two sides of protrusion 121 and flat part 122
Between angle less than 90 degree, then it is identical as referring to the shape of recess portion 121b illustrated by Fig. 5, therefore the robustness of protrusion 121
It reduces.On the other hand, the lost of life of stamping die, the radius of curvature of the circular arc 121c need to be 0.3mm or more in order to prevent.
To ensure that the radius of curvature of circular arc 121c is 0.3mm or more, the flat part is subtracted from the radius R1 of the circular circumference of rotor 120
The difference of the distance between the center of 122 starting point 122a and the rotor 120 C need to be 0.3mm or more.Punching press is solved as a result,
While the lost of life problem of mold, it is able to solve interference problem.
Fig. 7 is the shape for indicating 121 part of protrusion of the rotor 120 of Fig. 5 and Fig. 6 simultaneously.As shown in fig. 7, referring to Fig. 6's
Distance 720 in embodiment from the flat part 122 that the lower end of the two sides of protrusion 121 connects to the upper end of protrusion 121, than
The bottom of the recess portion 121b formed in embodiment referring to Fig. 5 from the lower end in the two sides of protrusion 121 section is upper to protrusion 121
The distance 710 of portion end is short.That is, referring to Fig. 6 embodiment in protrusion 121 structure than prominent in the embodiment referring to Fig. 5
Rise 121 structure it is firmer.
According to the embodiment above by reference to Fig. 6, it can be ensured that the shape on 120 periphery of rotor of outer-rotor type rotary transformer
At protrusion 121 robustness.In addition, utilizing the protrusion formed on the periphery of the rotor 120 of outer-rotor type rotary transformer
121, interference when rotor 120 to be installed to rotor bearing component 210 can be prevented.In addition, having by solving manufacture periphery
Lost of life problem caused by the Fast Wearing of stamping die when the rotor 120 of protrusion, it can be ensured that rotary transformer at
This competitiveness.
Claims (7)
1. a kind of rotary transformer characterized by comprising
The stator of magnetic material is circumferentially formed with multiple teeth portion at predetermined intervals；And
The rotor of magnetic material, positioned at the outside of the stator, and can relative to the stator and centered on rotary shaft into
Row rotation, and cooperate with the stator to change gap magnetic conductivity,
The rotor includes:
Protrusion is protruded in outward direction from periphery；And
Flat part is connected to the circular circumference of the rotor from the two sides lower end of the protrusion.
2. rotary transformer according to claim 1, which is characterized in that
The distance between starting point and the rotor center of the flat part nearest from the protrusion are less than the circle of the rotor
The radius of shape periphery.
3. rotary transformer according to claim 2, which is characterized in that
Angle between the two sides of the protrusion and the flat part is 90 degree or more.
4. rotary transformer according to claim 3, which is characterized in that
Multiple protrusions are formed in the periphery of the rotor.
5. rotary transformer according to claim 2, which is characterized in that
The distance between starting point and the rotor center of the flat nearest from the protrusion, the circle with the rotor
The difference of the radius of shape periphery is 0.3mm or more.
6. rotary transformer according to claim 2, which is characterized in that
Circular arc is formed between the two sides lower end and the flat part of the protrusion.
7. rotary transformer according to claim 6, which is characterized in that
The radius of curvature of the circular arc is 0.3mm or more.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2017-0101215 | 2017-08-09 | ||
| KR1020170101215A KR101936803B1 (en) | 2017-08-09 | 2017-08-09 | Resolver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208445463U true CN208445463U (en) | 2019-01-29 |
Family
ID=64334473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821253313.8U Active CN208445463U (en) | 2017-08-09 | 2018-08-03 | Rotary transformer |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101936803B1 (en) |
| CN (1) | CN208445463U (en) |
| DE (1) | DE202018104338U1 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4969873B2 (en) * | 2005-08-05 | 2012-07-04 | ヤマハ発動機株式会社 | Saddle-type vehicle equipped with a rotating electrical machine, and method of mounting the rotating electrical machine |
| JP6326366B2 (en) | 2014-12-25 | 2018-05-16 | 信越化学工業株式会社 | Lithium phosphorus composite oxide carbon composite, method for producing the same, electrochemical device, and lithium ion secondary battery |
-
2017
- 2017-08-09 KR KR1020170101215A patent/KR101936803B1/en active IP Right Grant
-
2018
- 2018-07-27 DE DE202018104338.2U patent/DE202018104338U1/en active Active
- 2018-08-03 CN CN201821253313.8U patent/CN208445463U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| KR101936803B1 (en) | 2019-01-10 |
| DE202018104338U1 (en) | 2018-11-05 |
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