CN114641669B - Magnetic generating unit, rotation angle detecting device, and rotating electric machine - Google Patents
Magnetic generating unit, rotation angle detecting device, and rotating electric machine Download PDFInfo
- Publication number
- CN114641669B CN114641669B CN201980100353.XA CN201980100353A CN114641669B CN 114641669 B CN114641669 B CN 114641669B CN 201980100353 A CN201980100353 A CN 201980100353A CN 114641669 B CN114641669 B CN 114641669B
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- Prior art keywords
- cylindrical portion
- magnetic
- housing
- generating unit
- magnetic generator
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- 238000001514 detection method Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- 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
- G01D5/244—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 characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—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 characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Provided is a magnetic generating unit capable of improving the detection accuracy of a rotation angle. The magnetic generating unit includes: a case formed of a nonmagnetic material and having a cylindrical portion with at least one end open, and a communication portion connecting a radially outer space and an inner space of the cylindrical portion; and a magnetic generator that is filled in the cylindrical portion and the communication portion continuously in the case until the open end portion side of the cylindrical portion, wherein a portion of the magnetic generator that is filled in the communication portion is not disposed at a position closer to the open end portion side of the cylindrical portion than a portion of the magnetic generator that is filled in the cylindrical portion, and wherein the magnetic generator is magnetized in a direction perpendicular to an axial direction of the case.
Description
Technical Field
The invention relates to a magnetic generating unit, a rotation angle detecting device and a rotating electric machine.
Background
Patent document 1 discloses a magnetic generating unit. The magnetic generating unit has excellent durability to a temperature fluctuation environment.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open publication 2016-153765
Disclosure of Invention
Problems to be solved by the invention
However, in the magnetic generating unit described in patent document 1, the magnetic generating body may rotate with respect to the housing. Therefore, the detection accuracy of the rotation angle may not be maintained.
The present invention has been made to solve the above problems. The invention aims to provide a magnetic generating unit, a rotation angle detecting device and a rotating motor capable of maintaining the detection precision of a rotation angle.
Means for solving the problems
The magnetic generating unit of the present invention comprises: a case formed of a nonmagnetic material and having a cylindrical portion with at least one end open, and a communication portion connecting a radially outer space and an inner space of the cylindrical portion; and a magnetic generator that is filled in the cylindrical portion and the communication portion continuously in the case until the open end portion side of the cylindrical portion, wherein a portion of the magnetic generator that is filled in the communication portion is not disposed at a position closer to the open end portion side of the cylindrical portion than a portion of the magnetic generator that is filled in the cylindrical portion, and wherein the magnetic generator is magnetized in a direction perpendicular to an axial direction of the case.
The rotation angle detection device of the present invention includes the magnetic generation means and a magnetic sensor facing the magnetic generation body.
The rotating electrical machine of the present invention includes: a housing which is a contour; a stator provided to the housing; a rotation shaft rotatably provided in the housing; a rotor provided on the rotating shaft; the magnetic generating unit is provided at an end of the rotating shaft so as to protrude from an open end side of the cylindrical portion; and a magnetic sensor facing the magnetic generator.
Effects of the invention
According to these inventions, the magnetic generator is continuously filled in the housing between the cylindrical portion and the communication portion up to the open end side of the cylindrical portion. In the magnetic generator, the portion filled in the communication portion is not disposed on the open end side of the cylindrical portion than the portion filled in the cylindrical portion. Therefore, the detection accuracy of the rotation angle can be maintained.
Drawings
Fig. 1 is a front view of a key part of a car of an elevator to which a rotating electric machine in embodiment 1 is applied.
Fig. 2 is a longitudinal sectional view of a key portion of an elevator car to which the rotating electric machine in embodiment 1 is applied.
Fig. 3 is a longitudinal sectional view of the rotary electric machine in embodiment 1.
Fig. 4 is a front view of a magnetic generating unit of the rotary electric machine in embodiment 1.
Fig. 5 is a cross-sectional view taken along line A-A of fig. 4.
Fig. 6 is a sectional view taken along line B-B of fig. 4.
Fig. 7 is a front view of a magnetic generating unit of the rotary electric machine in embodiment 2.
Fig. 8 is a sectional view taken along line C-C of fig. 7.
Fig. 9 is a sectional view taken along line D-D of fig. 7.
Fig. 10 is a front view of a magnetic generating unit of the rotary electric machine in embodiment 3.
Fig. 11 is a sectional view taken along line E-E of fig. 10.
Detailed Description
The mode for carrying out the invention is explained with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals. Repeated description of this portion is appropriately simplified or omitted.
Embodiment 1
Fig. 1 is a front view of a key part of a car of an elevator to which a rotating electric machine in embodiment 1 is applied. Fig. 2 is a longitudinal sectional view of a key portion of an elevator car to which the rotating electric machine in embodiment 1 is applied.
In fig. 1, an elevator car 1 is provided to be capable of moving up and down in a hoistway, not shown. The ceiling 1a is an upper portion of the car 1.
The pair of car doors 2 are double-open. One of the car doors 2 is provided at one side of the doorway of the car 1. The other side of the car door 2 is provided on the other side of the doorway of the car 1. In fig. 1, a pair of car doors 2 is fully closed.
One of the car doors 2 includes a pair of door shoes 2a. A pair of door shoes 2a are provided at one lower portion of the car door 2, respectively. The pair of door shoes 2a are each coupled to one of the car doors 2 by a leg.
The other of the car doors 2 includes a pair of door shoes 2b. A pair of door shoes 2b are provided at the lower portion of the other of the car doors 2. The pair of door shoes 2b are coupled to the other of the car doors 2 by legs.
The car sill 3 is provided at a lower portion of the doorway of the car 1. The car sill 3 has a groove 4. The groove 4 is formed so as to guide the pair of door shoes 2a and the pair of door shoes 2b.
One lower end of the door hanger 5 is connected to one upper end of the car door 2. One of the front rollers 6 is provided at one front end portion of the door hanger 5. One of the rear rollers 7 is provided at one rear end portion of the door hanger 5. One of the coupling members 8 is provided between one of the front rollers 6 and one of the rear rollers 7. One lower end of the connecting member 8 is connected to one upper end of the door hanger 5.
The other lower end of the door hanger 5 is connected to the other upper end of the car door 2. The other of the front rollers 6 is provided at the other front end portion of the door hanger 5. The other of the rear rollers 7 is provided at the rear end of the other of the door hanger 5. The other of the connectors 8 is provided between the other of the front rollers 6 and the other of the rear rollers 7. The other lower end of the connecting member 8 is connected to the other upper end of the door hanger 5.
The hanger rail 9 is provided above the doorway of the car 1. The longitudinal direction of the hanger rail 9 is set to be the horizontal direction. The hanger rail 9 supports one of the front rollers 6, one of the rear rollers 7, the other of the front rollers 6, and the other of the rear rollers 7 from below.
One of the pulleys 10 is disposed above one end of the hanger rail 9. The other of the pulleys 10 is disposed above the other end of the hanger rail 9.
The belt V is wound around a pair of pulleys 10. The lower side of the belt V is connected to one upper end portion of the pair of connecting members 8. The upper side of the belt V is connected to the other upper end of the pair of connecting members 8.
The rotary electric machine 11 is provided as a door motor. The rotating electric machine 11 is disposed below the ceiling 1a of the car 1. The rotating motor 11 is disposed above one end of the hanger rail 9. One of the pulleys 10 is rotatably supported by a rotation shaft of the rotary motor 11.
One of the pair of pulleys 10 rotates following the rotation of the rotation shaft of the rotary electric machine 11. The belt V circulates following the rotation of one of the pair of pulleys 10. The pair of links 8 moves in opposite directions to each other following the endless movement of the belt V.
The pair of door hangers 5 move in opposite directions to each other following the pair of links 8, respectively. The pair of car doors 2 move in opposite directions to each other following the pair of door hangers 5.
Next, the rotary electric machine 11 will be described with reference to fig. 3.
Fig. 3 is a longitudinal sectional view of the rotary electric machine in embodiment 1.
As shown in fig. 3, in the rotary electric machine 11, the housing 12 is formed as an outline. The housing 12 includes a 1 st shaft support portion 12a and a 2 nd shaft support portion 12b.
The 1 st shaft support portion 12a is formed in a flat plate shape. The 2 nd shaft supporting portion 12b is formed in a flat plate shape. The 1 st shaft support portion 12a and the 2 nd shaft support portion 12b face each other.
The 1 st opening 12c is formed in the center of the 1 st shaft support portion 12a. The 1 st opening 12c is formed in a circular shape. The 2 nd opening 12d is formed in the center of the 2 nd shaft supporting portion 12b. The 2 nd opening 12d is formed in a circular shape.
The 1 st bearing 13 is mounted to the 1 st opening 12c. The 2 nd bearing 14 is mounted to the 2 nd opening 12d. The rotary shaft 15 is rotatably supported by the housing 12 via the 1 st bearing 13 and the 2 nd bearing 14.
The rotor 16 includes a rotor core 17 and a plurality of rotor magnets 18. The rotor core 17 is fixed to the rotary shaft 15. A plurality of rotor magnets 18 are fixed to the outer peripheral surface of the rotor core 17.
The stator 19 includes a stator core 20 and a plurality of stator coils 21. The stator core 20 is fixed to the housing 12. The stator core 20 faces the rotor core 17 with a gap therebetween. A plurality of stator coils 21 are wound around the stator core 20.
The rotary shaft 15 includes a 1 st end 15a and a 2 nd end 15b.
The 1 st end 15a is an end axially closer to the 1 st shaft support portion 12a. The 1 st end 15a is held by the 1 st bearing 13 inside the 1 st opening 12c. The 2 nd end 15b is an end axially closer to the 2 nd shaft support portion 12b. The 2 nd end portion 15b penetrates the 2 nd bearing 14 and protrudes outside the housing 12.
The recess 15c is formed in the center of the end face on the 1 st end 15a side. For example, the concave portion 15c is formed in a circular shape.
The magnetic generating unit 22 is formed in a cylindrical shape. The magnetic generating unit 22 is provided inside the recess 15 c. For example, the magnetic generating unit 22 does not protrude from the end face on the 1 st end 15a side.
The magnetic generating unit 22 includes a housing 23 and a magnetic generating body 24.
The case 23 is formed of a nonmagnetic material. For example, the housing 23 is formed of resin, aluminum, brass, or the like. The housing 23 includes a cylindrical portion 23a and a bottom portion 23b. The bottom portion 23b closes one axial end of the cylindrical portion 23a.
In fig. 3, a plurality of cutouts 23c, not shown, are arranged in the circumferential direction of the cylindrical portion 23a. The plurality of cutouts 23c are used for circumferential positioning of the magnetic generator 24. In this example, 2 cutouts 23c are provided in the cylindrical portion 23a. The plurality of cutouts 23c are arranged in point symmetry with respect to the center of the cylindrical portion 23a. The plurality of cutouts 23c are opposed to the sensor substrate 25.
The magnetic generator 24 is formed in a disk shape. The magnetic generator 24 is accommodated inside the case 23. The magnetic generator 24 is formed by magnetizing after injecting a material of the bonded magnet into the case 23.
In order to detect the relative angle of the rotor magnet 18 and the stator coil 21, the magnetic generator 24 conforms to a certain angle with respect to the rotor magnet 18. The magnetic generating body 24 is positioned in the circumferential direction of the rotary shaft 15. The cutouts 23c are used for circumferential positioning of the magnetic generator 24.
The case 23 is fixed to the inside of the recess 15c by an adhesive. After the housing 23 is inserted into the recess 15c, the circumferential positioning of the magnetic generator 24 is performed by hooking an accessory or a worker's finger or the like into the cutout 23c and rotating the housing 23 before the adhesive is cured. In this state, the adhesive is cured.
A mark for positioning the magnetic generator 24 is provided on the end surface of the rotary shaft 15. The plurality of cutouts 23c serve as marks for positioning the magnetic generator 24 side.
For example, the sensor substrate 25 is a print substrate. The sensor substrate 25 is fixed to a surface of the 1 st shaft support portion 12a opposite to the 2 nd shaft support portion 12b. For example, the sensor substrate 25 is fixed to the 1 st shaft support portion 12a by a plurality of bolts. The sensor substrate 25 closes the 1 st opening 12c.
For example, the magnetic sensor 26 is a magnetoresistive element. The magnetic sensor 26 is provided on the sensor substrate 25. The magnetic sensor 26 faces the magnetic generator 24 with a gap therebetween.
The magnetic generation unit 22, the sensor substrate 25, and the magnetic sensor 26 function as a rotation angle detection device 27. The rotation angle detection device 27 generates a signal corresponding to the rotation angle of the rotation shaft 15. When the rotary electric machine 11 is a motor, the signal is sent to a control unit (not shown) that controls the rotation of the motor.
Next, the magnetic generating unit 22 will be described with reference to fig. 4 to 6.
Fig. 4 is a front view of a magnetic generating unit of the rotary electric machine in embodiment 1. Fig. 5 is a cross-sectional view taken along line A-A of fig. 4. Fig. 5 is a sectional view taken along line B-B of fig. 4.
In the case 23 of fig. 4, at least one end of the cylindrical portion 23a is open. The plurality of cutouts 23c function as communication portions. For example, the pair of cutouts 23c connects the radially outer space and the radially inner space of the cylindrical portion 23a on the open end side of the cylindrical portion 23a.
The magnetic generator 24 is continuously filled in the cylindrical portion 23a and the pair of cutouts 23c until the open end side of the cylindrical portion 23a of the housing 23. In the magnetic generator 24, the portions filled in the pair of cutouts 23c are not disposed on the open end side of the cylindrical portion 23a than the portions filled in the cylindrical portion 23a. The magnetic generating body 24 is magnetized in a direction perpendicular to the axial direction of the housing 23. For example, the magnetic generator 24 is magnetized so that the boundary line between the N pole and the S pole is parallel to the pair of slits 23c and passes through the center line of the case 23.
According to embodiment 1 described above, the magnetic generator 24 is continuously filled in the case 23 in the cylindrical portion 23a and the pair of cutouts 23c up to the open end side of the cylindrical portion 23a. In the magnetic generator 24, the portions filled in the pair of cutouts 23c are not disposed on the open end side of the cylindrical portion 23a than the portions filled in the cylindrical portion 23a. Therefore, the detection accuracy of the rotation angle can be maintained.
The housing 23 has a pair of cutouts 23c on the open end side of the cylindrical portion 23a as communication portions. Therefore, the communication portion can be formed with a simple structure.
The number of the cutouts 23c is not limited. The magnetic generator 24 may not be filled in all the cutouts 23c.
In the magnetic generator 24, the protruding portion may have a shape other than a circular shape.
As shown in fig. 4, the housing 23 may be formed such that a portion connected to the outer space of the pair of cutouts 23c is planar. In this case, the magnetic generator 24 can be easily molded.
The magnetic generator 24 may not protrude from the housing 23.
In the magnetic generator 24, the direction of magnetization may be the radial direction of the housing 23. For example, the direction of magnetization may be a direction perpendicular to the direction of magnetization in embodiment mode 1.
In addition, the rotary electric machine 11 can be configured to be thin. Therefore, when the rotating electric machine 11 is applied to the door motor of the elevator, the ceiling 21b can be increased without changing the size of the door device, and the design of the car 1 can be improved.
Embodiment 2
Fig. 7 is a front view of a magnetic generating unit of the rotary electric machine in embodiment 2. Fig. 8 is a sectional view taken along line C-C of fig. 7. Fig. 9 is a sectional view taken along line D-D of fig. 7. The same or corresponding parts as those of embodiment 1 are denoted by the same reference numerals. The description of this portion is omitted.
In the magnetic generator 24 according to embodiment 2, the outer diameter of the portion protruding from the open end of the housing 23 is larger than the inner diameter of the cylindrical portion 23a of the housing 23, and is equal to or smaller than the outer diameter of the cylindrical portion 23a of the housing 23.
According to embodiment 2 described above, in the magnetic generator 24, the outer diameter of the portion protruding from the open end portion of the housing 23 is larger than the inner diameter of the cylindrical portion 23a of the housing 23 and is equal to or smaller than the outer diameter of the cylindrical portion 23a of the housing 23. In this case, the detection accuracy of the rotation angle can be maintained.
Embodiment 3
Fig. 10 is a front view of a magnetic generating unit of the rotary electric machine in embodiment 3. Fig. 11 is a sectional view taken along line E-E of fig. 10. The same or corresponding parts as those of embodiment 1 are denoted by the same reference numerals. The description of this portion is omitted.
The case 23 of embodiment 3 has a pair of holes penetrating the outer peripheral surface side and the inner peripheral surface side of the cylindrical portion 23a as the communication portion 23d. The magnetic generator 24 is continuously filled in the cylindrical portion 23a and the pair of holes as the communication portion 23d.
According to embodiment 3 described above, the case 23 has a pair of holes penetrating the outer peripheral surface side and the inner peripheral surface side of the cylindrical portion 23a as the communicating portion 23d. Therefore, the communication portion 23d can be formed with a simple structure.
The hole and the shape of the communication portion 23d are not limited.
The rotary electric machine 11 according to embodiment 1 to embodiment 3 may be applied to a motor, a generator motor, or the like other than the door motor 29.
The magnetic sensor 26 according to embodiment 1 to embodiment 3 may be a hall element, a hall IC, a magnetic encoder, or the like.
Industrial applicability
As described above, the magnetic generating unit, the rotation angle detecting device, and the rotating electric machine of the present invention can be used in an elevator system.
Description of the reference numerals
1: a car; 1a: a ceiling; 2: a car door; 2a: a door boot; 2b: a door boot; 3: a car sill; 4: a groove; 5: a door hanger; 6: a front roller; 7: a rear roller; 8: a connecting piece; 9: a hanger rail; 10: a belt wheel; 11: a rotating electric machine; 12: a housing; 12a: a 1 st shaft support part; 12b: a 2 nd shaft supporting part; 12c: a 1 st opening; 12d: a 2 nd opening; 13: a 1 st bearing; 14: a 2 nd bearing; 15: a rotation shaft; 15a: a 1 st end; 15b: a 2 nd end; 15c: a concave portion; 16: a rotor; 17: a rotor core; 18: a rotor magnet; 19: a stator; 20: a stator core; 21 stator coils; 22: a magnetic generation unit; 23: a housing; 23a: a cylindrical portion; 23b: a bottom; 23c: a notch; 23d: a communication section; 24: a magnetic generator; 25: a sensor substrate; 26: a magnetic sensor; 27: rotation angle detecting means.
Claims (6)
1. A magnetic generating unit is provided with:
a case formed of a nonmagnetic material and having a cylindrical portion with at least one end open, and a communication portion connecting a radially outer space and an inner space of the cylindrical portion; and
a magnetic generator that is filled in the housing continuously with the cylindrical portion and the communication portion until an open end side of the cylindrical portion, wherein a portion of the magnetic generator that is filled in the communication portion is not disposed closer to the open end side of the cylindrical portion than a portion of the magnetic generator that is filled in the cylindrical portion, wherein the magnetic generator is magnetized in a direction perpendicular to an axial direction of the housing,
wherein,
the magnetic generator is filled to protrude from the open end of the housing,
the outer diameter of a portion of the magnetic generator protruding from the open end of the housing is larger than the inner diameter of the cylindrical portion of the housing and is equal to or smaller than the outer diameter of the cylindrical portion of the housing.
2. The magnetic generating unit according to claim 1, wherein,
the housing has a cutout on the open end side of the cylindrical portion as the communication portion.
3. The magnetic generating unit according to claim 1, wherein,
the housing has a hole penetrating the outer peripheral surface side and the inner peripheral surface side of the cylindrical portion as the communication portion.
4. A magnetic generating unit according to any one of claims 1 to 3, wherein,
the housing is formed such that, in the cylindrical portion, a portion of the communication portion that is connected to the outside space is a plane.
5. A rotation angle detection device is provided with:
a magnetic generating unit as claimed in any one of claims 1 to 4; and
and a magnetic sensor facing the magnetic generator.
6. A rotating electrical machine is provided with:
a housing which is a contour;
a stator provided to the housing;
a rotation shaft rotatably provided in the housing;
a rotor provided on the rotating shaft;
the magnetic generating unit according to any one of claims 1 to 4, which is provided on an open end side of the cylindrical portion at an end of the rotation shaft; and
and a magnetic sensor facing the magnetic generator.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/045483 WO2021100155A1 (en) | 2019-11-20 | 2019-11-20 | Magnetic generation unit, rotation angle detection device, and rotary electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114641669A CN114641669A (en) | 2022-06-17 |
| CN114641669B true CN114641669B (en) | 2024-03-01 |
Family
ID=75378150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980100353.XA Active CN114641669B (en) | 2019-11-20 | 2019-11-20 | Magnetic generating unit, rotation angle detecting device, and rotating electric machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6860120B1 (en) |
| CN (1) | CN114641669B (en) |
| WO (1) | WO2021100155A1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007187484A (en) * | 2006-01-11 | 2007-07-26 | Uchiyama Mfg Corp | Tone wheel and manufacturing method therefor |
| JP2012083212A (en) * | 2010-10-12 | 2012-04-26 | Aisin Seiki Co Ltd | Rotation angle detection device |
| CN203456217U (en) * | 2013-09-25 | 2014-02-26 | 汪玉华 | Magnetic force fixing device |
| JP2015135295A (en) * | 2014-01-18 | 2015-07-27 | アルプス電気株式会社 | Magnet holding unit and magnetic type rotation angle detection device |
| WO2015140961A1 (en) * | 2014-03-19 | 2015-09-24 | 三菱電機株式会社 | Electric motor and electric power steering device using same |
| JP2017173035A (en) * | 2016-03-22 | 2017-09-28 | Tdk株式会社 | Magnet structure and rotation angle detector |
| JP2018044768A (en) * | 2016-09-12 | 2018-03-22 | 日立オートモティブシステムズ株式会社 | Rotation angle detecting device |
| WO2019012693A1 (en) * | 2017-07-14 | 2019-01-17 | 三菱電機株式会社 | Rotary electric machine |
-
2019
- 2019-11-20 JP JP2020533173A patent/JP6860120B1/en active Active
- 2019-11-20 CN CN201980100353.XA patent/CN114641669B/en active Active
- 2019-11-20 WO PCT/JP2019/045483 patent/WO2021100155A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007187484A (en) * | 2006-01-11 | 2007-07-26 | Uchiyama Mfg Corp | Tone wheel and manufacturing method therefor |
| JP2012083212A (en) * | 2010-10-12 | 2012-04-26 | Aisin Seiki Co Ltd | Rotation angle detection device |
| CN203456217U (en) * | 2013-09-25 | 2014-02-26 | 汪玉华 | Magnetic force fixing device |
| JP2015135295A (en) * | 2014-01-18 | 2015-07-27 | アルプス電気株式会社 | Magnet holding unit and magnetic type rotation angle detection device |
| WO2015140961A1 (en) * | 2014-03-19 | 2015-09-24 | 三菱電機株式会社 | Electric motor and electric power steering device using same |
| JP2017173035A (en) * | 2016-03-22 | 2017-09-28 | Tdk株式会社 | Magnet structure and rotation angle detector |
| JP2018044768A (en) * | 2016-09-12 | 2018-03-22 | 日立オートモティブシステムズ株式会社 | Rotation angle detecting device |
| WO2019012693A1 (en) * | 2017-07-14 | 2019-01-17 | 三菱電機株式会社 | Rotary electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114641669A (en) | 2022-06-17 |
| JP6860120B1 (en) | 2021-04-14 |
| WO2021100155A1 (en) | 2021-05-27 |
| JPWO2021100155A1 (en) | 2021-12-02 |
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