WO2024029273A1 - Stator of resolver - Google Patents

Stator of resolver Download PDF

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Publication number
WO2024029273A1
WO2024029273A1 PCT/JP2023/025270 JP2023025270W WO2024029273A1 WO 2024029273 A1 WO2024029273 A1 WO 2024029273A1 JP 2023025270 W JP2023025270 W JP 2023025270W WO 2024029273 A1 WO2024029273 A1 WO 2024029273A1
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WO
WIPO (PCT)
Prior art keywords
stator
resolver
shield
stator core
annular
Prior art date
Application number
PCT/JP2023/025270
Other languages
French (fr)
Japanese (ja)
Inventor
輝明 村岡
祐輔 佐原
Original Assignee
ミネベアミツミ株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ミネベアミツミ株式会社 filed Critical ミネベアミツミ株式会社
Publication of WO2024029273A1 publication Critical patent/WO2024029273A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/01—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields, i.e. structural association with shields
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
    • 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
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports

Definitions

  • the present invention relates to a resolver stator, and particularly to a resolver stator equipped with a shield.
  • a resolver is known as a means for detecting the rotation angle of a rotating electric machine such as a motor or a generator. Due to changes in the current supplied to the windings of the rotating electrical machine to which the resolver is applied, part of the magnetic flux generated from the rotating electrical machine is superimposed on the signal flowing through the windings wound around the resolver's stator, causing the signal waveform to change. There is a possibility that the rotation angle of the rotating electric machine cannot be accurately detected due to the disturbance. Therefore, in order to suppress the influence of magnetic flux from a rotating electric machine, a resolver stator including a shield is known (for example, see Patent Document 1).
  • the stator of the resolver disclosed in Patent Document 1 includes an electromagnetic shield 8 having an annular shield body that covers a stator winding 10 wound around a plurality of teeth portions 13, and a stator core 9 that is connected to a bolt.
  • the electromagnetic shield 8 has a core fastening part 15 in which a core fastening hole 15a as a fastening hole is formed, and a shield fastening part 21 in which a shield fastening hole 21a connected to the core fastening hole 15a is formed.
  • stator core 9 and the electromagnetic shield 8 are in contact with each other, there is a possibility that the magnetic flux generated by the rotating electrical machine may link from the electromagnetic shield 8 to the stator winding 10 via the stator core 9. . Furthermore, since the stator core 9 and the electromagnetic shield 8 overlap in the axial direction, the side surfaces of the stator core 9 are exposed. Therefore, there is a possibility that the magnetic flux generated by the rotating electrical machine may enter from the side surface of the stator core 9 and interlink with the stator winding 10.
  • the present invention has been made in view of the above circumstances, and one object of the present invention is to provide a stator for a resolver that can effectively shield the magnetic flux generated by a rotating electrical machine and reduce the magnetic flux interlinking with the stator windings. It has two purposes.
  • the present invention provides a stator core including an annular main body portion, a plurality of teeth extending radially inward from a periphery of the main body portion, an insulator provided on the stator core, and a plurality of teeth provided through the insulator.
  • the insulator includes a winding portion attached to the teeth, and a flange portion extending radially outward from the winding portion, and the shield is connected to the stator core.
  • stator winding wound around the teeth between the main body part of the stator core and the first annular part of the shield. and a stator of a resolver in which the flange portion of the insulator is interposed.
  • FIG. 1 is a plan view showing a resolver according to an embodiment of the present invention. It is an exploded perspective view showing a stator of a resolver of an embodiment.
  • FIG. 2 is an exploded perspective view of the stator of the resolver of the embodiment viewed from below. It is a top view showing the stator of the resolver of an embodiment. It is a side view showing the stator of the resolver of an embodiment. It is a back view showing the stator of the resolver of the embodiment.
  • FIG. 2 is a perspective view of the stator of the resolver of the embodiment viewed from below.
  • FIG. 2 is a cross-sectional view of a portion of the stator of the resolver according to the embodiment, including bolts.
  • FIG. 3 is a cross-sectional view of a portion of the stator of the resolver according to the embodiment, including a coupling pin.
  • FIG. 2 is an exploded perspective view showing a stator of the resolver described in Patent Document 1.
  • FIG. 1 shows a resolver 1 according to an embodiment of the present invention.
  • the resolver 1 is a VR (variable reluctance) resolver.
  • the resolver 1 has a rotor 10 and a stator 100.
  • the rotor 10 is fixed to the output shaft of a motor (not shown).
  • the rotor 10 has a non-circular shape having a plurality of protrusions 11 that protrude outward in the radial direction when viewed from the axial direction.
  • the rotor 10 has a structure in which a plurality of thin rotor cores are stacked in the axial direction.
  • the direction of the output shaft will be referred to as the "axial direction”, and the direction orthogonal to the axial direction will be referred to as the "radial direction”. Furthermore, the terms “upper” and “lower” refer to the vertical direction in FIG. 2 .
  • the thin plate-shaped rotor core that constitutes the rotor 10 is manufactured by pressing a plate made of electromagnetic steel sheet into the shape shown in the drawing.
  • the rotor 10 is constructed by stacking the plurality of rotor cores in the axial direction and fixing them by caulking.
  • the stator 100 is arranged outside the rotor 10 and fixed to the housing 20. A gap is provided between the rotor 10 and the stator 100, so that the rotor 10 can rotate inside the stator 100.
  • the housing 20 is a member to which the stator 100 of the resolver 1 is attached, and is provided with screw holes (not shown) for fixing the stator 100 of the resolver 1.
  • the stator 100 of the resolver 1 is attached to the housing 20 by screwing the bolts 30 into the screw holes.
  • the number of bolts 30 is only one in FIG. 1, it is attached to the housing 20 with a plurality of bolts 30.
  • the stator 100 has a stator core 110.
  • the stator core 110 has a structure in which a plurality of thin plate-shaped cores are stacked in the axial direction.
  • the thin plate-shaped core includes an annular core back portion (main body portion) 111, a plurality of teeth 112 protruding radially inward from the core back portion 111, and a plurality of flanges 113 protruding radially outward from the core back portion 111. It is equipped with A through hole (insertion part) 113a through which the bolt 30 is inserted is formed in the flange 113 on a concentric circle in the circumferential direction.
  • the core is manufactured by pressing a plate made of electromagnetic steel sheet.
  • the stator core 110 is obtained by stacking a plurality of these cores in the axial direction and fixing them by caulking.
  • the diameter of the through hole 113a is such that the bolt 30 does not come into contact with the stator core 110 when the bolt 30 is inserted into the through hole 113a.
  • Insulators 120 are fixed from both sides of the stator core 110 in the axial direction.
  • the insulator 120 is made of insulating resin and is injection molded using the stator core 110 as an insert material. As shown in FIGS. 8 and 9, the insulator 120 includes a winding portion 121 fixed to each tooth 112 and a flange portion 125 extending radially outward from the winding portion 121.
  • the winding portion 121 is formed to surround the entire circumference of the teeth 112, and includes a body portion 122 at a radially central portion and an inner regulating portion that extends in the axial and circumferential directions on the inner peripheral side of the body portion 122. 123 , and an outer regulating portion 124 erected in the axial direction on the outer peripheral side of the body portion 122 .
  • a stator winding 130 is wound around the body 122, and the inner regulating section 123 and the outer regulating section 124 regulate the range in which the conductive wire is wound so that the stator winding 130 does not collapse.
  • the flange portion 125 of the insulator 120 is formed with a plurality of protrusions 126 that protrude radially outward and are arranged at equal intervals in the circumferential direction.
  • the protrusion 126 is formed to have substantially the same shape and size as the flange 113 of the stator core 110, and is arranged to overlap the flange 113 of the stator core 110.
  • a through hole 126a is formed in the protrusion 126 and overlaps with the through hole 113a of the flange 113.
  • a terminal block portion 140 is integrally molded with the insulator 120, and a plurality of terminal pins 141 are implanted in the terminal block portion 140 by insert molding. Further, a connector housing 142 is integrally formed on the lower side of the terminal block portion 140 in the axial direction.
  • the terminal pin 141 has a crank shape in the axial direction, and has one end protruding into the terminal block section 140 and the other end protruding into the connector housing 142.
  • a winding terminal 131 of the stator winding 130 is wound around and connected to one end of a terminal pin 141.
  • the insulator 120 is formed with an annular projection 127 that projects downward in the axial direction.
  • the annular projection 127 extends annularly along the core back portion 111 , and its end portion is connected to the terminal block portion 140 .
  • the annular protrusion 127 is adapted to come into close contact with the inner peripheral surface of a hole formed in the housing 20.
  • a terminal pin cover 150 is attached to the terminal block section 140.
  • the terminal pin cover 150 includes a rectangular top plate portion 151, side plate portions 152 extending in the axial direction from three sides of the top plate portion 151, and a pair of side plate portions 152 extending in the axial direction from the lower edges of the side plate portions 152 facing each other. It consists of an arm portion 153. At the lower end portions of the pair of arm portions 153, claw portions 154 are formed that protrude toward each other.
  • a plurality of convex portions 143 are formed along one side of the upper surface of the terminal block portion 140 and protrude upward in the axial direction, and a side plate of the terminal pin cover 150 is formed on the radially outer surface of the convex portions 143.
  • the inner circumferential surface of the portion 152 is brought into close contact.
  • grooves 144 are formed on both sides of the terminal block portion 140, and a step portion 145 that is one step deeper is formed at the lower end of the groove 144.
  • a plurality of partition plates 155 extending in the radial direction are formed on the back surface of the top plate portion 151 of the terminal pin cover 150.
  • the partition plate 155 is inserted between the terminal pins 141, and the winding terminals 131 of the stator winding 130 connected to one end of the terminal pin 141 are separated. Prevent contact.
  • the flange portion 125 of the insulator 120 is provided with a plurality of coupling pins 128 that protrude upward in the axial direction and are located in the middle of the through hole 126a.
  • the shield 160 is coupled to the insulator 120 using the coupling pin 128.
  • the shield 160 is an annular member made of a metal material (for example, cold-rolled steel plate), and includes a first annular portion 161 on the outer circumferential side, as shown in FIG.
  • a cylindrical portion 162 is formed at the edge of the first annular portion 161 and extends downward in the axial direction.
  • the axial length of the cylindrical portion 162 is set to be the same as the axial length of the stator core 110 plus the thickness of the flange portion 125 of the insulator 120, but may be larger than this length. Therefore, when the stator 100 is attached to the housing 20, the edge of the cylindrical portion 162 is in close contact with the surface of the housing 20.
  • a second annular portion 164 is formed on the inner peripheral side of the first annular portion 161 via a connecting portion 163 .
  • the second annular portion 164 is located upward in the axial direction with respect to the first annular portion 161, and the connecting portion 163 that connects the two is an upwardly sloped surface.
  • a terminal block cover 166 is formed on one side of the connecting portion 163 and extends radially outward. The surface of the terminal block portion cover 166 and the surface of the second annular portion 164 are on the same plane.
  • a circular opening 165 is formed in the center of the second annular portion 164 .
  • first through holes 167 are formed concentrically in the circumferential direction.
  • the first through hole 167 is arranged at a position corresponding to the through hole 113a formed in the flange 113 of the stator core 110 and the through hole 126a formed in the protrusion 126 of the insulator 120.
  • a plurality of circular second through holes 168 are formed in the first annular portion 161 concentrically in the circumferential direction.
  • the second through hole 168 is arranged at a position corresponding to the coupling pin 128 formed on the flange portion 125 of the insulator 120.
  • a plurality of coupling pins 128 formed on the flange portion 125 of the insulator 120 are respectively inserted into the second through hole 168 formed on the first annular portion 161 of the shield 160, and the connecting pins 128 protrude from the second through hole 168.
  • the shield 160 is coupled to the stator core 100 by plastically deforming (thermal caulking) the tip of the coupling pin 128 (see FIG. 9).
  • the deformed tip of the coupling pin 128 is located below the second annular portion 164 of the shield 160 and does not protrude from the second annular portion 164 in the axial direction.
  • the second annular portion 164 of the shield 160 is located above the stator winding 130, and there is a predetermined gap between the stator winding 130 and the second annular portion 164 (the back surface of the second annular portion 164). is formed so that the shield 160 does not come into contact with the stator winding 130.
  • the first annular portion 161 of the shield 160 is placed on the flange portion 125 of the insulator 120. In this way, since the flange portion 125 is disposed between the core back portion 111 of the stator core 110 and the first annular portion 161 of the shield 160, the shield 160 does not contact the stator core 110.
  • the second annular part 164 of the shield 160 covers the stator winding 130
  • the first annular part 161 of the shield 160 covers the core back part 111 of the stator core 110
  • the terminal block cover 166 of the shield 160 covers the terminal block part 140.
  • the cylindrical portion 162 of the shield 160 surrounds the entire side surface of the stator core 110. As shown in FIG. 6, the side surface of the stator core 110 and the inner peripheral surface of the cylindrical portion 162 of the shield 160 have a predetermined gap in the radial direction so that they do not come into contact with each other.
  • the stator 100 with the shield 160 attached is attached to the housing 20 with metal bolts 30.
  • a washer 31 can be interposed between the shield 160 and the bolt 30.
  • the bolt 30 is inserted into the first through hole 167 formed in the first annular portion 161 of the shield 160 and the through hole 113a formed in the flange 113 of the stator core 110, and is screwed into the screw hole of the housing 20.
  • the insulating resin flange portion 125 of the insulator 120 is interposed between the core back portion 111 of the stator core 110 and the first annular portion 161 of the shield 160. It is possible to suppress the magnetic flux absorbed by the shield 160 from interlinking with the stator winding 130 via the core back portion 111. Since such an effect can be obtained by using the flange portion 125 that is a part of the insulator 120, an increase in manufacturing cost can be avoided.
  • the bolt 30 acts as an antenna and absorbs the magnetic flux generated by the motor, and the magnetic flux flows to the shield 160.
  • the insulating resin flange portion 125 is present at the peripheral edge of the first through hole 167 of the shield 160 through which the bolt 30 is inserted, magnetic flux is prevented from flowing to the core back portion 111. be able to.
  • the bolt 30 is inserted into the through hole 113a of the stator core 110, there is a predetermined gap in the radial direction so that the bolt 30 and the stator core 100 do not come into contact with each other, so that magnetic flux does not flow to the core back portion 111. can be prevented.
  • the cylindrical portion 162 of the shield 160 covers the core back portion 111, magnetic flux that attempts to enter from around the core back portion 111 can be shielded.
  • the second annular portion 164 of the shield 160 is spaced upward in the axial direction with respect to the stator winding 130, the magnetic flux absorbed by the shield 164 is suppressed from interlinking with the stator winding 130. be done.
  • the shield 160 since the shield 160 includes the terminal block cover 166 that covers the terminal block part 140, the influence of the magnetic flux generated by the motor on the winding terminals 131 can be suppressed.
  • the stator core 110 is integrally molded with the stator core 110 as an insert material, when the coupling pin 128 of the insulator 120 is inserted into the second through hole 168 of the shield 160 and thermally caulked, the stator core 110 is also attached to the insulator 120. Workability is good because it is combined with
  • the present invention is not limited to the above-described embodiments, and various modifications can be made as described below. i)
  • the through hole 113a formed in the flange 113 of the stator core 110 and the through hole 126a formed in the protrusion 126 of the insulator 120 may be cutouts opened radially outward.
  • the connector housing 142 is provided to insert a socket, but a structure in which a known lead wire is connected to the terminal pin 141 may also be used.
  • the present invention can be used in a resolver that detects the rotation angle of a rotating electrical machine such as a motor.
  • Winding end 140... Terminal block portion, 141... Terminal pin, 142... Connector housing, 143... Convex portion, 144... Groove, 145 ...Step part, 150...Terminal pin cover, 151...Top plate part, 152...Side plate part, 153...Arm part, 154...Claw part, 155...Partition plate, 160...Shield, 161...First annular part, 162...Cylindrical part , 163... Connecting portion, 164... Second annular portion, 165... Opening, 166... Terminal block cover, 167... First through hole, 168... Second through hole.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

[Problem] To reduce magnetic flux interlinking with stator windings by effectively shielding magnetic flux that is generated by a rotating electrical machine. [Solution] Provided is a stator 100 of a resolver 1, comprising: a stator core 110 including a core back portion 111, and teeth 112 extending radially inward from a peripheral edge of the core back portion 111; an insulator 120 provided on the stator core 110; stator windings 130 wound around the teeth 112 via the insulator 120; and a shield 160 having an annular shape and covering a motor side of the stator core 110. The insulator 160 includes a winding portion that is attached to the teeth 112, and a flange portion 125 extending radially outward from the winding portion. The shield 160 includes a first annular portion 161 that covers the core back portion 111, and a second annular portion 164 that covers the stator windings 130. The flange portion 125 is interposed between the core back portion 111 and the first annular portion 161.

Description

レゾルバのステータResolver stator
　本発明は、レゾルバのステータに係り、特に、シールドを備えたレゾルバのステータに関する。 The present invention relates to a resolver stator, and particularly to a resolver stator equipped with a shield.
　従来、モータや発電機などの回転電機の回転角を検出する手段として、レゾルバが知られている。レゾルバを適用した回転電機の巻線に供給した電流の変化によって、回転電機から発生した磁束の一部が、レゾルバのステータに巻回した巻線に流れる信号に重畳することで、信号の波形が乱れて回転電機の回転角を正確に検出できなくなる虞がある。このため、回転電機からの磁束の影響を抑制するため、シールドを備えたレゾルバのステータが知られている（例えば、特許文献１参照）。 Conventionally, a resolver is known as a means for detecting the rotation angle of a rotating electric machine such as a motor or a generator. Due to changes in the current supplied to the windings of the rotating electrical machine to which the resolver is applied, part of the magnetic flux generated from the rotating electrical machine is superimposed on the signal flowing through the windings wound around the resolver's stator, causing the signal waveform to change. There is a possibility that the rotation angle of the rotating electric machine cannot be accurately detected due to the disturbance. Therefore, in order to suppress the influence of magnetic flux from a rotating electric machine, a resolver stator including a shield is known (for example, see Patent Document 1).
　特許文献１のレゾルバのステータは、図１０に示すように、複数のティース部１３に巻回されたステータ巻線１０を覆う環状のシールド本体を有した電磁シールド８を備え、ステータコア９は、ボルト締結孔としてのコア締結孔１５ａが形成されたコア締結部１５を有し、電磁シールド８は、コア締結孔１５ａに連なるシールド締結孔２１ａが形成されたシールド締結部２１を有する。 As shown in FIG. 10, the stator of the resolver disclosed in Patent Document 1 includes an electromagnetic shield 8 having an annular shield body that covers a stator winding 10 wound around a plurality of teeth portions 13, and a stator core 9 that is connected to a bolt. The electromagnetic shield 8 has a core fastening part 15 in which a core fastening hole 15a as a fastening hole is formed, and a shield fastening part 21 in which a shield fastening hole 21a connected to the core fastening hole 15a is formed.
　このような構造においては、コア締結孔１５ａとシールド締結孔２１ａとにボルトを挿通して、コア締結部１５とシールド締結部２１とをハウジングに共締めするように構成されている。この場合において、ステータコア９の各コア締結部１５に微小孔４０を形成し、微小孔４０に電磁シールド８のシールド締結部２１の一部を圧入するようにしてカシメ結合している。これによって共締め作業の効率を飛躍的に向上させることができるとしている。 In such a structure, bolts are inserted into the core fastening hole 15a and the shield fastening hole 21a, and the core fastening part 15 and the shield fastening part 21 are fastened together to the housing. In this case, a microhole 40 is formed in each core fastening portion 15 of the stator core 9, and a portion of the shield fastening portion 21 of the electromagnetic shield 8 is press-fitted into the microhole 40 for caulking. The company claims that this will dramatically improve the efficiency of co-tightening work.
特開２０１４－１０７９７７号公報Japanese Patent Application Publication No. 2014-107977
　しかしながら、上記のような構造では、ステータコア９と電磁シールド８が接触しているため、回転電機が発生する磁束が電磁シールド８からステータコア９を経由してステータ巻線１０に鎖交する虞がある。また、ステータコア９と電磁シールド８は軸方向で重なっているため、ステータコア９の側面は露出した構造となっている。このため、回転電機が発生する磁束がステータコア９の側面から侵入してステータ巻線１０に鎖交する虞がある。 However, in the above structure, since the stator core 9 and the electromagnetic shield 8 are in contact with each other, there is a possibility that the magnetic flux generated by the rotating electrical machine may link from the electromagnetic shield 8 to the stator winding 10 via the stator core 9. . Furthermore, since the stator core 9 and the electromagnetic shield 8 overlap in the axial direction, the side surfaces of the stator core 9 are exposed. Therefore, there is a possibility that the magnetic flux generated by the rotating electrical machine may enter from the side surface of the stator core 9 and interlink with the stator winding 10.
　本発明は、上記事情に鑑みてなされたもので、回転電機が発生する磁束を効果的に遮蔽してステータ巻線に鎖交する磁束を低減することができるレゾルバのステータを提供することを一つの目的としている。 The present invention has been made in view of the above circumstances, and one object of the present invention is to provide a stator for a resolver that can effectively shield the magnetic flux generated by a rotating electrical machine and reduce the magnetic flux interlinking with the stator windings. It has two purposes.
　本発明は、環状の本体部と、前記本体部の周縁から径方向内側に延在する複数のティースとを備えたステータコアと、前記ステータコアに設けられたインシュレータと、前記インシュレータを介して前記複数のティースに巻回されたステータ巻線と、前記ステータ巻線の端末が接続される複数の端子ピンと、前記複数の端子ピンを保持する端子台部と、前記ステータコアの回転電機側を覆う環状のシールドと、を備えたレゾルバのステータにおいて、前記インシュレータは、前記ティースに装着される巻線部と、前記巻線部から径方向外側に延在するフランジ部と、を備え、前記シールドは、前記ステータコアの前記本体部を覆う第１環状部と、前記ティースに巻回されたステータ巻線を覆う第２環状部とを備え、前記ステータコアの前記本体部と前記シールドの前記第１環状部との間に、前記インシュレータの前記フランジ部を介在させたレゾルバのステータである。 The present invention provides a stator core including an annular main body portion, a plurality of teeth extending radially inward from a periphery of the main body portion, an insulator provided on the stator core, and a plurality of teeth provided through the insulator. A stator winding wound around teeth, a plurality of terminal pins to which terminals of the stator winding are connected, a terminal block portion holding the plurality of terminal pins, and an annular shield covering the rotating electric machine side of the stator core. In the stator of the resolver, the insulator includes a winding portion attached to the teeth, and a flange portion extending radially outward from the winding portion, and the shield is connected to the stator core. and a second annular part that covers the stator winding wound around the teeth, between the main body part of the stator core and the first annular part of the shield. and a stator of a resolver in which the flange portion of the insulator is interposed.
本発明の実施形態のレゾルバを示す平面図である。FIG. 1 is a plan view showing a resolver according to an embodiment of the present invention. 実施形態のレゾルバのステータを示す分解斜視図である。It is an exploded perspective view showing a stator of a resolver of an embodiment. 実施形態のレゾルバのステータを下側から視た分解斜視図である。FIG. 2 is an exploded perspective view of the stator of the resolver of the embodiment viewed from below. 実施形態のレゾルバのステータを示す平面図である。It is a top view showing the stator of the resolver of an embodiment. 実施形態のレゾルバのステータを示す側面図である。It is a side view showing the stator of the resolver of an embodiment. 実施形態のレゾルバのステータを示す裏面図である。It is a back view showing the stator of the resolver of the embodiment. 実施形態のレゾルバのステータを下側から視た斜視図である。FIG. 2 is a perspective view of the stator of the resolver of the embodiment viewed from below. 実施形態のレゾルバのステータのボルトを含む部分の断面図である。FIG. 2 is a cross-sectional view of a portion of the stator of the resolver according to the embodiment, including bolts. 実施形態のレゾルバのステータの結合ピンを含む部分の断面図である。FIG. 3 is a cross-sectional view of a portion of the stator of the resolver according to the embodiment, including a coupling pin. 特許文献１に記載のレゾルバのステータを示す分解斜視図である。FIG. 2 is an exploded perspective view showing a stator of the resolver described in Patent Document 1.
１．レゾルバの全体構成
　図１に本発明の実施形態のレゾルバ１を示す。レゾルバ１は、ＶＲ（バリアブルリラクタンス）型レゾルバである。レゾルバ１は、ロータ１０とステータ１００を有している。ロータ１０は、モータ（図示略）の出力軸に固定されている。ロータ１０は、軸方向から見て、径方向外側に突出する複数の突部１１を有する非円形な形状を有している。ロータ１０は、薄板状のロータコアを軸方向において複数枚積層した構造を有している。なお、以下の説明においては、出力軸の方向を「軸方向」と称し、軸方向に直交する方向を「径方向」と称する。また、「上」および「下」の用語は図２の上下方向を示すものとする。 1. Overall configuration of resolver FIG. 1 shows a resolver 1 according to an embodiment of the present invention. The resolver 1 is a VR (variable reluctance) resolver. The resolver 1 has a rotor 10 and a stator 100. The rotor 10 is fixed to the output shaft of a motor (not shown). The rotor 10 has a non-circular shape having a plurality of protrusions 11 that protrude outward in the radial direction when viewed from the axial direction. The rotor 10 has a structure in which a plurality of thin rotor cores are stacked in the axial direction. In the following description, the direction of the output shaft will be referred to as the "axial direction", and the direction orthogonal to the axial direction will be referred to as the "radial direction". Furthermore, the terms "upper" and "lower" refer to the vertical direction in FIG. 2 .
　ロータ１０を構成する薄板状のロータコアは、電磁鋼板からなるプレートを図示の形状にプレス加工することで製作されている。複数のロータコアは、軸方向において積層され、カシメ固定により固定されることでロータ１０が構成されている。 The thin plate-shaped rotor core that constitutes the rotor 10 is manufactured by pressing a plate made of electromagnetic steel sheet into the shape shown in the drawing. The rotor 10 is constructed by stacking the plurality of rotor cores in the axial direction and fixing them by caulking.
　ステータ１００は、ロータ１０の外側に配置され、ハウジング２０に固定されている。ロータ１０とステータ１００との間には、隙間が設けられ、ロータ１０がステータ１００の内側で回転できる構造となっている。ハウジング２０は、レゾルバ１のステータ１００が取り付けられる対象となる部材であり、レゾルバ１のステータ１００を固定するためのねじ孔（図示略）が設けられている。ねじ孔にボルト３０を螺合させることで、レゾルバ１のステータ１００はハウジング２０に取り付けられている。なお、図１では、ボルト３０は１本のみであるが、複数のボルト３０でハウジング２０に取り付ける。 The stator 100 is arranged outside the rotor 10 and fixed to the housing 20. A gap is provided between the rotor 10 and the stator 100, so that the rotor 10 can rotate inside the stator 100. The housing 20 is a member to which the stator 100 of the resolver 1 is attached, and is provided with screw holes (not shown) for fixing the stator 100 of the resolver 1. The stator 100 of the resolver 1 is attached to the housing 20 by screwing the bolts 30 into the screw holes. In addition, although the number of bolts 30 is only one in FIG. 1, it is attached to the housing 20 with a plurality of bolts 30.
　図２および図３に示すように、ステータ１００は、ステータコア１１０を有している。ステータコア１１０は、薄板状のコアを軸方向で複数枚積層した構造を有している。薄板状のコアは、環状のコアバック部（本体部）１１１と、コアバック部１１１から径方向内側に突出する複数のティース１１２と、コアバック部１１１から径方向外側に突出する複数のフランジ１１３を備えている。フランジ１１３には、ボルト３０を挿通させる貫通孔（挿通部）１１３ａが周方向に同心円上に形成されている。コアは、電磁鋼板からなるプレートをプレス加工することで製作されている。このコアが軸方向において複数積層され、カシメ固定されることで、ステータコア１１０が得られている。貫通孔１１３ａの直径は、ボルト３０を貫通孔１１３ａに挿通した際、ボルト３０がステータコア１１０に接触しない寸法を有している。 As shown in FIGS. 2 and 3, the stator 100 has a stator core 110. The stator core 110 has a structure in which a plurality of thin plate-shaped cores are stacked in the axial direction. The thin plate-shaped core includes an annular core back portion (main body portion) 111, a plurality of teeth 112 protruding radially inward from the core back portion 111, and a plurality of flanges 113 protruding radially outward from the core back portion 111. It is equipped with A through hole (insertion part) 113a through which the bolt 30 is inserted is formed in the flange 113 on a concentric circle in the circumferential direction. The core is manufactured by pressing a plate made of electromagnetic steel sheet. The stator core 110 is obtained by stacking a plurality of these cores in the axial direction and fixing them by caulking. The diameter of the through hole 113a is such that the bolt 30 does not come into contact with the stator core 110 when the bolt 30 is inserted into the through hole 113a.
　ステータコア１１０の軸方向両側からインシュレータ１２０が固定されている。インシュレータ１２０は、絶縁性のある樹脂製であり、ステータコア１１０をインサート材にして射出成形されたものである。図８および図９に示すように、インシュレータ１２０は、各ティース１１２に固定された巻線部１２１と、巻線部１２１から径方向外側に延在するフランジ部１２５とを備えている。 Insulators 120 are fixed from both sides of the stator core 110 in the axial direction. The insulator 120 is made of insulating resin and is injection molded using the stator core 110 as an insert material. As shown in FIGS. 8 and 9, the insulator 120 includes a winding portion 121 fixed to each tooth 112 and a flange portion 125 extending radially outward from the winding portion 121.
　巻線部１２１は、ティース１１２の全周を囲繞するように形成されており、径方向中央部の胴部１２２と、胴部１２２の内周側で軸方向および周方向に広がった内側規制部１２３と、胴部１２２の外周側で軸方向に立設された外側規制部１２４とを備えている。そして、胴部１２２には、ステータ巻線１３０が巻回され、内側規制部１２３と外側規制部１２４は、ステータ巻線１３０の巻き崩れが生じないように導線を巻回する範囲を規制する。 The winding portion 121 is formed to surround the entire circumference of the teeth 112, and includes a body portion 122 at a radially central portion and an inner regulating portion that extends in the axial and circumferential directions on the inner peripheral side of the body portion 122. 123 , and an outer regulating portion 124 erected in the axial direction on the outer peripheral side of the body portion 122 . A stator winding 130 is wound around the body 122, and the inner regulating section 123 and the outer regulating section 124 regulate the range in which the conductive wire is wound so that the stator winding 130 does not collapse.
　インシュレータ１２０のフランジ部１２５には、径方向外側に突出する複数の突起部１２６が周方向に等間隔に配列されて形成されている。突起部１２６は、ステータコア１１０のフランジ１１３とほぼ同形同大に形成され、ステータコア１１０のフランジ１１３に重ねて配置されている。突起部１２６には、フランジ１１３の貫通孔１１３ａと重なる貫通孔１２６ａが形成されている。 The flange portion 125 of the insulator 120 is formed with a plurality of protrusions 126 that protrude radially outward and are arranged at equal intervals in the circumferential direction. The protrusion 126 is formed to have substantially the same shape and size as the flange 113 of the stator core 110, and is arranged to overlap the flange 113 of the stator core 110. A through hole 126a is formed in the protrusion 126 and overlaps with the through hole 113a of the flange 113.
　図２に示すように、インシュレータ１２０には、端子台部１４０が一体に成形され、端子台部１４０には複数の端子ピン１４１がインサート成形により植設されている。また、端子台部１４０の軸方向下側には、コネクタハウジング１４２が一体に成形されている。端子ピン１４１は、軸方向にクランク状をなしており、その一端部は端子台部１４０に突出し、他端部はコネクタハウジング１４２の中に突出している。ステータ巻線１３０の巻線端末１３１は、端子ピン１４１の一端部に絡げられて接続されている。 As shown in FIG. 2, a terminal block portion 140 is integrally molded with the insulator 120, and a plurality of terminal pins 141 are implanted in the terminal block portion 140 by insert molding. Further, a connector housing 142 is integrally formed on the lower side of the terminal block portion 140 in the axial direction. The terminal pin 141 has a crank shape in the axial direction, and has one end protruding into the terminal block section 140 and the other end protruding into the connector housing 142. A winding terminal 131 of the stator winding 130 is wound around and connected to one end of a terminal pin 141.
　図３に示すように、インシュレータ１２０には、軸方向下側に突出する環状突起１２７が形成されている。環状突起１２７は、コアバック部１１１に添って環状に延在し、その端部は端子台部１４０に接続されている。環状突起１２７は、ハウジング２０に形成された穴の内周面に密着するようになっている。 As shown in FIG. 3, the insulator 120 is formed with an annular projection 127 that projects downward in the axial direction. The annular projection 127 extends annularly along the core back portion 111 , and its end portion is connected to the terminal block portion 140 . The annular protrusion 127 is adapted to come into close contact with the inner peripheral surface of a hole formed in the housing 20.
　端子台部１４０には、端子ピンカバー１５０が装着されている。端子ピンカバー１５０は、矩形の頂板部１５１と、頂板部１５１の３辺から軸方向に延在する側板部１５２と、互いに対向する側板部１５２の下縁部から軸方向に延在する一対の腕部１５３とからなっている。一対の腕部１５３の下端部には、互いの方向に突出する爪部１５４が形成されている。 A terminal pin cover 150 is attached to the terminal block section 140. The terminal pin cover 150 includes a rectangular top plate portion 151, side plate portions 152 extending in the axial direction from three sides of the top plate portion 151, and a pair of side plate portions 152 extending in the axial direction from the lower edges of the side plate portions 152 facing each other. It consists of an arm portion 153. At the lower end portions of the pair of arm portions 153, claw portions 154 are formed that protrude toward each other.
　一方、端子台部１４０の上面には、その一側に添って軸方向上側に突出する複数の凸部１４３が形成されており、凸部１４３の径方向外側の面に端子ピンカバー１５０の側板部１５２の内周面が密着するようになっている。また、端子台部１４０の両側部には、溝１４４が形成され、溝１４４の下端部には一段深くなった段部１４５が形成されている。このような構成のもとに、端子ピンカバー１５０の腕部１５３を溝１４４に挿入して押し下げると、爪部１５４が段部１４５に係合して端子ピンカバー１５０が端子台部１４０に装着される。 On the other hand, a plurality of convex portions 143 are formed along one side of the upper surface of the terminal block portion 140 and protrude upward in the axial direction, and a side plate of the terminal pin cover 150 is formed on the radially outer surface of the convex portions 143. The inner circumferential surface of the portion 152 is brought into close contact. Furthermore, grooves 144 are formed on both sides of the terminal block portion 140, and a step portion 145 that is one step deeper is formed at the lower end of the groove 144. With this configuration, when the arm portion 153 of the terminal pin cover 150 is inserted into the groove 144 and pushed down, the claw portion 154 engages with the step portion 145 and the terminal pin cover 150 is attached to the terminal block portion 140. be done.
　図３に示すように、端子ピンカバー１５０の頂板部１５１の裏面には、径方向に延在する複数の仕切板１５５が形成されている。端子ピンカバー１５０を端子台部１４０に装着すると、仕切板１５５が端子ピン１４１同士の間に挿入され、端子ピン１４１の一端部に絡げ接続されたステータ巻線１３０の巻線端末１３１同士の接触を防止する。 As shown in FIG. 3, a plurality of partition plates 155 extending in the radial direction are formed on the back surface of the top plate portion 151 of the terminal pin cover 150. When the terminal pin cover 150 is attached to the terminal block section 140, the partition plate 155 is inserted between the terminal pins 141, and the winding terminals 131 of the stator winding 130 connected to one end of the terminal pin 141 are separated. Prevent contact.
　インシュレータ１２０のフランジ部１２５には、軸方向上側に突出する複数の結合ピン１２８が貫通孔１２６ａの中間に位置して形成されている。そして、この結合ピン１２８を用いてシールド１６０がインシュレータ１２０に結合されている。 The flange portion 125 of the insulator 120 is provided with a plurality of coupling pins 128 that protrude upward in the axial direction and are located in the middle of the through hole 126a. The shield 160 is coupled to the insulator 120 using the coupling pin 128.
　シールド１６０は、金属材料（例えば、冷間圧延鋼板）からなる環状のものであり、図２に示すように、外周側に第１環状部１６１を備えている。第１環状部１６１の縁部には、軸方向下側に延在する円筒部１６２が形成されている。円筒部１６２の軸方向の長さは、ステータコア１１０の軸方向の長さにインシュレータ１２０のフランジ部１２５の厚さを足した長さと同じに設定されているが、この寸法より大きくてもよい。このため、ステータ１００をハウジング２０に装着した状態で、円筒部１６２の縁部はハウジング２０の表面に密着する。第１環状部１６１の内周側には、連接部１６３を介して第２環状部１６４が形成されている。 The shield 160 is an annular member made of a metal material (for example, cold-rolled steel plate), and includes a first annular portion 161 on the outer circumferential side, as shown in FIG. A cylindrical portion 162 is formed at the edge of the first annular portion 161 and extends downward in the axial direction. The axial length of the cylindrical portion 162 is set to be the same as the axial length of the stator core 110 plus the thickness of the flange portion 125 of the insulator 120, but may be larger than this length. Therefore, when the stator 100 is attached to the housing 20, the edge of the cylindrical portion 162 is in close contact with the surface of the housing 20. A second annular portion 164 is formed on the inner peripheral side of the first annular portion 161 via a connecting portion 163 .
　第２環状部１６４は、第１環状部１６１に対して軸方向上側に偏って位置しており、両者を連結する連接部１６３は、上り勾配の傾斜面とされている。連接部１６３の一側には、径方向外側に延在する端子台部カバー１６６が形成されている。端子台部カバー１６６の面と第２環状部１６４の面は同一平面とされている。第２環状部１６４の中央には円形の開口１６５が形成されている。 The second annular portion 164 is located upward in the axial direction with respect to the first annular portion 161, and the connecting portion 163 that connects the two is an upwardly sloped surface. A terminal block cover 166 is formed on one side of the connecting portion 163 and extends radially outward. The surface of the terminal block portion cover 166 and the surface of the second annular portion 164 are on the same plane. A circular opening 165 is formed in the center of the second annular portion 164 .
　第１環状部１６１には、円形の複数の第１貫通孔１６７が周方向に同心円上に形成されている。第１貫通孔１６７は、ステータコア１１０のフランジ１１３に形成された貫通孔１１３ａと、インシュレータ１２０の突起部１２６に形成された貫通孔１２６ａに対応する位置に配置されている。また、第１環状部１６１には、円形の複数の第２貫通孔１６８が周方向に同心円上に形成されている。第２貫通孔１６８は、インシュレータ１２０のフランジ部１２５に形成された結合ピン１２８に対応する位置に配置されている。 In the first annular portion 161, a plurality of circular first through holes 167 are formed concentrically in the circumferential direction. The first through hole 167 is arranged at a position corresponding to the through hole 113a formed in the flange 113 of the stator core 110 and the through hole 126a formed in the protrusion 126 of the insulator 120. Further, a plurality of circular second through holes 168 are formed in the first annular portion 161 concentrically in the circumferential direction. The second through hole 168 is arranged at a position corresponding to the coupling pin 128 formed on the flange portion 125 of the insulator 120.
２．レゾルバの組立方法
　インシュレータ１２０のフランジ部１２５に形成された複数の結合ピン１２８をそれぞれシールド１６０の第１環状部１６１に形成された第２貫通孔１６８に挿入し、第２貫通孔１６８から突出した結合ピン１２８の先端を熱で塑性変形（熱カシメ）することで、シールド１６０をステータコア１００と結合する（図９参照）。結合ピン１２８の変形した先端の箇所は、シールド１６０の第２環状部１６４よりも下方に配置され、第２環状部１６４から軸方向に突出しない。 2. Method for assembling resolver A plurality of coupling pins 128 formed on the flange portion 125 of the insulator 120 are respectively inserted into the second through hole 168 formed on the first annular portion 161 of the shield 160, and the connecting pins 128 protrude from the second through hole 168. The shield 160 is coupled to the stator core 100 by plastically deforming (thermal caulking) the tip of the coupling pin 128 (see FIG. 9). The deformed tip of the coupling pin 128 is located below the second annular portion 164 of the shield 160 and does not protrude from the second annular portion 164 in the axial direction.
　このとき、シールド１６０の第２環状部１６４は、ステータ巻線１３０の上方に位置し、ステータ巻線１３０と第２環状部１６４（第２環状部１６４の裏面）との間には所定の隙間が形成され、シールド１６０がステータ巻線１３０に接触しないようになっている。 At this time, the second annular portion 164 of the shield 160 is located above the stator winding 130, and there is a predetermined gap between the stator winding 130 and the second annular portion 164 (the back surface of the second annular portion 164). is formed so that the shield 160 does not come into contact with the stator winding 130.
　シールド１６０の第１環状部１６１は、インシュレータ１２０のフランジ部１２５に載置される。このように、ステータコア１１０のコアバック部１１１とシールド１６０の第１環状部１６１との間には、フランジ部１２５が配置されるため、シールド１６０はステータコア１１０に接触しない。 The first annular portion 161 of the shield 160 is placed on the flange portion 125 of the insulator 120. In this way, since the flange portion 125 is disposed between the core back portion 111 of the stator core 110 and the first annular portion 161 of the shield 160, the shield 160 does not contact the stator core 110.
　シールド１６０の第２環状部１６４はステータ巻線１３０を覆い、シールド１６０の第１環状部１６１はステータコア１１０のコアバック部１１１を覆い、シールド１６０の端子台部カバー１６６は端子台部１４０を覆い、シールド１６０の円筒部１６２はステータコア１１０の側面の全周を囲繞する。図６に示すように、ステータコア１１０の側面とシールド１６０の円筒部１６２の内周面とは、互いに接触しないように径方向で所定の隙間を有している。 The second annular part 164 of the shield 160 covers the stator winding 130, the first annular part 161 of the shield 160 covers the core back part 111 of the stator core 110, and the terminal block cover 166 of the shield 160 covers the terminal block part 140. , the cylindrical portion 162 of the shield 160 surrounds the entire side surface of the stator core 110. As shown in FIG. 6, the side surface of the stator core 110 and the inner peripheral surface of the cylindrical portion 162 of the shield 160 have a predetermined gap in the radial direction so that they do not come into contact with each other.
　シールド１６０を装着したステータ１００を金属製のボルト３０でハウジング２０に取り付ける。この場合、図８に示すように、座金３１をシールド１６０とボルト３０の間に介装することができる。ボルト３０をシールド１６０の第１環状部１６１に形成された第１貫通孔１６７と、ステータコア１１０のフランジ１１３に形成された貫通孔１１３ａに挿通し、ハウジング２０のねじ孔に螺合させる。 The stator 100 with the shield 160 attached is attached to the housing 20 with metal bolts 30. In this case, as shown in FIG. 8, a washer 31 can be interposed between the shield 160 and the bolt 30. The bolt 30 is inserted into the first through hole 167 formed in the first annular portion 161 of the shield 160 and the through hole 113a formed in the flange 113 of the stator core 110, and is screwed into the screw hole of the housing 20.
　モータが回転すると磁束が発生し、ステータ巻線１３０へ向かう磁束はシールド１６０に吸収される。上記構成のレゾルバのステータ１００においては、ステータコア１１０のコアバック部１１１とシールド１６０の第１環状部１６１との間に、インシュレータ１２０の絶縁性を有する樹脂のフランジ部１２５を介在させているから、シールド１６０に吸収された磁束がコアバック部１１１を経由してステータ巻線１３０に鎖交するのを抑制することができる。そして、そのような作用を、インシュレータ１２０の一部であるフランジ部１２５を利用して得ることができるので、製造コストの増加を回避することができる。 When the motor rotates, magnetic flux is generated, and the magnetic flux directed toward the stator winding 130 is absorbed by the shield 160. In the resolver stator 100 having the above configuration, the insulating resin flange portion 125 of the insulator 120 is interposed between the core back portion 111 of the stator core 110 and the first annular portion 161 of the shield 160. It is possible to suppress the magnetic flux absorbed by the shield 160 from interlinking with the stator winding 130 via the core back portion 111. Since such an effect can be obtained by using the flange portion 125 that is a part of the insulator 120, an increase in manufacturing cost can be avoided.
　ボルト３０は、アンテナとなってモータが発生した磁束を吸収し、磁束はシールド１６０に流れる。この点、上記実施形態では、ボルト３０を挿通させるシールド１６０の第１貫通孔１６７の周縁部に絶縁性を有する樹脂のフランジ部１２５が存在するから、磁束がコアバック部１１１へ流れるのを防ぐことができる。また、ボルト３０をステータコア１１０の貫通孔１１３ａに挿通した際、ボルト３０とステータコア１００とが互いに接触しないように径方向で所定の隙間を有しているから、磁束がコアバック部１１１へ流れるのを防ぐことができる。 The bolt 30 acts as an antenna and absorbs the magnetic flux generated by the motor, and the magnetic flux flows to the shield 160. In this regard, in the above embodiment, since the insulating resin flange portion 125 is present at the peripheral edge of the first through hole 167 of the shield 160 through which the bolt 30 is inserted, magnetic flux is prevented from flowing to the core back portion 111. be able to. Further, when the bolt 30 is inserted into the through hole 113a of the stator core 110, there is a predetermined gap in the radial direction so that the bolt 30 and the stator core 100 do not come into contact with each other, so that magnetic flux does not flow to the core back portion 111. can be prevented.
　上記ステータ１００においては、シールド１６０の円筒部１６２がコアバック部１１１の周囲を覆っているから、コアバック部１１１の周囲から入り込もうとする磁束を遮蔽することができる。 In the stator 100, since the cylindrical portion 162 of the shield 160 covers the core back portion 111, magnetic flux that attempts to enter from around the core back portion 111 can be shielded.
　上記ステータ１００においては、シールド１６０の第２環状部１６４がステータ巻線１３０に対して軸方向上側に離間しているから、シールド１６４が吸収した磁束がステータ巻線１３０に鎖交するのが抑制される。 In the stator 100, since the second annular portion 164 of the shield 160 is spaced upward in the axial direction with respect to the stator winding 130, the magnetic flux absorbed by the shield 164 is suppressed from interlinking with the stator winding 130. be done.
　上記ステータ１００においては、シールド１６０が端子台部１４０を覆う端子台部カバー１６６を備えているので、モータが発生する磁束が巻線端末１３１に与える影響を抑制することができる。 In the stator 100, since the shield 160 includes the terminal block cover 166 that covers the terminal block part 140, the influence of the magnetic flux generated by the motor on the winding terminals 131 can be suppressed.
　上記実施形態では、インシュレータ１２０がステータコア１１０をインサート材として一体に成形されているから、インシュレータ１２０の結合ピン１２８をシールド１６０の第２貫通孔１６８に挿通して熱カシメすると、ステータコア１１０もインシュレータ１２０に結合されるから作業性がよい。 In the embodiment described above, since the insulator 120 is integrally molded with the stator core 110 as an insert material, when the coupling pin 128 of the insulator 120 is inserted into the second through hole 168 of the shield 160 and thermally caulked, the stator core 110 is also attached to the insulator 120. Workability is good because it is combined with
３．変更例
　本発明は上記実施形態に限定されるものではなく以下のように種々の変更が可能である。
ｉ）ステータコア１１０のフランジ１１３に形成した貫通孔１１３ａ、およびインシュレータ１２０の突起部１２６に形成した貫通孔１２６ａは、径方向外側に開放された切欠であってもよい。 3. Modifications The present invention is not limited to the above-described embodiments, and various modifications can be made as described below.
i) The through hole 113a formed in the flange 113 of the stator core 110 and the through hole 126a formed in the protrusion 126 of the insulator 120 may be cutouts opened radially outward.
ii）上記実施形態ではコネクタハウジング１４２を設けてソケットを差し込むようにしているが、端子ピン１４１に公知のリード線を接続した構成であってもよい。 ii) In the above embodiment, the connector housing 142 is provided to insert a socket, but a structure in which a known lead wire is connected to the terminal pin 141 may also be used.
　本発明は、モータ等の回転電機の回転角を検出するレゾルバに利用することができる。 The present invention can be used in a resolver that detects the rotation angle of a rotating electrical machine such as a motor.
　１…レゾルバ、１０…ロータ、１１…突部、２０…ハウジング、３０…ボルト、３１…座金、１００…ステータ、１１０…ステータコア、１１１…コアバック部（本体部）、１１２…ティース、１１３…フランジ、１１３ａ…貫通孔（挿通部）、１２０…インシュレータ、１２１…巻線部、１２２…胴部、１２３…内側規制部、１２４…外側規制部、１２５…フランジ部、１２６…突起部、１２６ａ…貫通孔、１２７…環状突起、１２８…結合ピン、１３０…ステータ巻線、１３１…巻線端末、１４０…端子台部、１４１…端子ピン、１４２…コネクタハウジング、１４３…凸部、１４４…溝、１４５…段部、１５０…端子ピンカバー、１５１…頂板部、１５２…側板部、１５３…腕部、１５４…爪部、１５５…仕切板、１６０…シールド、１６１…第１環状部、１６２…円筒部、１６３…連接部、１６４…第２環状部、１６５…開口、１６６…端子台部カバー、１６７…第１貫通孔、１６８…第２貫通孔。

  DESCRIPTION OF SYMBOLS 1...Resolver, 10...Rotor, 11...Protrusion, 20...Housing, 30...Bolt, 31...Washer, 100...Stator, 110...Stator core, 111...Core back part (main body part), 112...Teeth, 113...Flange , 113a...Through hole (insertion part), 120...Insulator, 121...Winding part, 122...Body part, 123...Inner regulation part, 124...Outer regulation part, 125...Flange part, 126...Protrusion part, 126a...Penetration Hole, 127... Annular projection, 128... Coupling pin, 130... Stator winding, 131... Winding end, 140... Terminal block portion, 141... Terminal pin, 142... Connector housing, 143... Convex portion, 144... Groove, 145 ...Step part, 150...Terminal pin cover, 151...Top plate part, 152...Side plate part, 153...Arm part, 154...Claw part, 155...Partition plate, 160...Shield, 161...First annular part, 162...Cylindrical part , 163... Connecting portion, 164... Second annular portion, 165... Opening, 166... Terminal block cover, 167... First through hole, 168... Second through hole.

Claims (14)

  1. 　環状の本体部と、前記本体部の周縁から径方向内側に延在する複数のティースとを備えたステータコアと、
    　前記ステータコアに設けられたインシュレータと、
    　前記インシュレータを介して前記複数のティースに巻回されたステータ巻線と、
    　前記ステータ巻線の端末が接続される複数の端子ピンと、
    　前記複数の端子ピンを保持する端子台部と、
    　前記ステータコアの回転電機側を覆う環状のシールドと、
    を備えたレゾルバのステータにおいて、
    　前記インシュレータは、前記ティースに装着される巻線部と、前記巻線部から径方向外側に延在するフランジ部とを備え、
    　前記シールドは、前記ステータコアの前記本体部を覆う第１環状部と、前記ティースに巻回されたステータ巻線を覆う第２環状部とを備え、
    　前記ステータコアの前記本体部と前記シールドの前記第１環状部との間に、前記インシュレータの前記フランジ部を介在させたレゾルバのステータ。     a stator core including an annular main body and a plurality of teeth extending radially inward from a periphery of the main body;
    an insulator provided in the stator core;
    a stator winding wound around the plurality of teeth via the insulator;
    a plurality of terminal pins to which terminals of the stator winding are connected;
    a terminal block portion that holds the plurality of terminal pins;
    an annular shield that covers the rotating electric machine side of the stator core;
    In the stator of a resolver equipped with
    The insulator includes a winding portion attached to the teeth and a flange portion extending radially outward from the winding portion,
    The shield includes a first annular portion that covers the main body portion of the stator core, and a second annular portion that covers the stator winding wound around the teeth,
    A stator of a resolver, wherein the flange portion of the insulator is interposed between the main body portion of the stator core and the first annular portion of the shield.
  2. 　前記ステータコアの前記本体部は、ボルトを挿通させるための複数の挿通部を備え、
    　前記シールドの前記第１環状部は、前記ボルトを挿通するための複数の第１貫通孔を備え、前記第１貫通孔の周縁部に前記フランジ部を介在させた請求項１に記載のレゾルバのステータ。     The main body portion of the stator core includes a plurality of insertion portions for inserting bolts,
    The resolver according to claim 1, wherein the first annular portion of the shield includes a plurality of first through holes for inserting the bolts, and the flange portion is interposed at a peripheral edge of the first through hole. stator.
  3. 　前記シールドは、前記第１環状部の周縁から軸方向に延在して前記ステータコアの前記本体部の側面を覆う円筒部を備える請求項１または２に記載のレゾルバのステータ。 The resolver stator according to claim 1 or 2, wherein the shield includes a cylindrical part that extends in the axial direction from the periphery of the first annular part and covers a side surface of the main body part of the stator core.
  4. 　前記円筒部は、前記ステータコアの側面の全周を囲繞する請求項３に記載のレゾルバのステータ。 The stator for a resolver according to claim 3, wherein the cylindrical portion surrounds the entire circumference of a side surface of the stator core.
  5. 　前記円筒部の縁部は、当該ステータが装着されるハウジングの表面に密着している請求項４に記載のレゾルバのステータ。 5. The resolver stator according to claim 4, wherein an edge of the cylindrical portion is in close contact with a surface of a housing to which the stator is mounted.
  6. 　前記インシュレータの前記フランジ部は、軸方向へ突出する複数の結合ピンを備え、前記シールドの前記第１環状部は、前記結合ピンが貫通する複数の第２貫通孔を備え、前記シールドは、前記第２貫通孔から突出した前記結合ピンを塑性変形して前記ステータコアに結合されている請求項１乃至５のいずれかに記載のレゾルバのステータ。 The flange portion of the insulator includes a plurality of coupling pins protruding in the axial direction, the first annular portion of the shield includes a plurality of second through holes through which the coupling pins pass, and the shield includes a plurality of second through holes through which the coupling pins pass. 6. The resolver stator according to claim 1, wherein the coupling pin protruding from the second through hole is plastically deformed and coupled to the stator core.
  7. 　前記インシュレータは、前記ステータコアをインサート材にして一体に成形されている請求項１乃至６のいずれかに記載のレゾルバのステータ。 7. The resolver stator according to claim 1, wherein the insulator is integrally formed with the stator core as an insert material.
  8. 　前記シールドは、前記端子台部を覆う端子台部カバーを備える請求項１乃至７のいずれかに記載のレゾルバのステータ。 8. The resolver stator according to claim 1, wherein the shield includes a terminal block cover that covers the terminal block.
  9. 　前記端子台部には、端子ピンカバーが装着され、前記端子台部カバーは、前記端子ピンカバーを覆う請求項８に記載のレゾルバのステータ。 The resolver stator according to claim 8, wherein a terminal pin cover is attached to the terminal block portion, and the terminal block portion cover covers the terminal pin cover.
  10. 　前記端子台部カバーの表面は、前記第２環状部の表面と平坦に連続している請求項８または９に記載のレゾルバのステータ。 The resolver stator according to claim 8 or 9, wherein the surface of the terminal block cover is flat and continuous with the surface of the second annular portion.
  11. 　前記ステータコアの前記本体部は、径方向外側に突出する複数のフランジを備え、前記フランジに、前記挿通部を備えた請求項２乃至１０のいずれかに記載のレゾルバのステータ。 The resolver stator according to any one of claims 2 to 10, wherein the main body portion of the stator core includes a plurality of flanges protruding radially outward, and the flanges include the insertion portion.
  12. 　前記挿通部は、貫通孔または切欠である請求項２乃至１１のいずれかに記載のレゾルバのステータ。 12. The resolver stator according to claim 2, wherein the insertion portion is a through hole or a notch.
  13. 　前記シールドの前記第２環状部は、前記第１環状部よりも前記ステータコアから軸線方向に離れた位置にある請求項１乃至１２のいずれかに記載のレゾルバのステータ。 13. The resolver stator according to claim 1, wherein the second annular portion of the shield is located further away from the stator core in the axial direction than the first annular portion.
  14. 　請求項１乃至１３のいずれかに記載のレゾルバのステータの内側に、前記回転電機の出力軸に接続されたロータを配置したレゾルバ。
          A resolver according to any one of claims 1 to 13, wherein a rotor connected to an output shaft of the rotating electric machine is disposed inside a stator of the resolver.
PCT/JP2023/025270 2022-08-02 2023-07-07 Stator of resolver WO2024029273A1 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080567A1 (en) * 2005-01-31 2006-08-03 Toyota Jidosha Kabushiki Kaisha Resolver fixing structure
JP2011017584A (en) * 2009-07-08 2011-01-27 Minebea Co Ltd Sheet coil type resolver
JP2013165608A (en) * 2012-02-13 2013-08-22 Toyota Motor Corp Resolver stator
JP2014107977A (en) * 2012-11-28 2014-06-09 Japan Aviation Electronics Industry Ltd Stator
JP2015045510A (en) * 2013-08-27 2015-03-12 ミネベア株式会社 Resolver
JP6246967B1 (en) * 2017-05-08 2017-12-13 ミネベアミツミ株式会社 Stator structure and resolver
JP2019126241A (en) * 2018-01-18 2019-07-25 ミネベアミツミ株式会社 Stator structure and resolver

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080567A1 (en) * 2005-01-31 2006-08-03 Toyota Jidosha Kabushiki Kaisha Resolver fixing structure
JP2011017584A (en) * 2009-07-08 2011-01-27 Minebea Co Ltd Sheet coil type resolver
JP2013165608A (en) * 2012-02-13 2013-08-22 Toyota Motor Corp Resolver stator
JP2014107977A (en) * 2012-11-28 2014-06-09 Japan Aviation Electronics Industry Ltd Stator
JP2015045510A (en) * 2013-08-27 2015-03-12 ミネベア株式会社 Resolver
JP6246967B1 (en) * 2017-05-08 2017-12-13 ミネベアミツミ株式会社 Stator structure and resolver
JP2019126241A (en) * 2018-01-18 2019-07-25 ミネベアミツミ株式会社 Stator structure and resolver

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