WO2016060015A1 - Moteur électrique - Google Patents

Moteur électrique Download PDF

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Publication number
WO2016060015A1
WO2016060015A1 PCT/JP2015/078346 JP2015078346W WO2016060015A1 WO 2016060015 A1 WO2016060015 A1 WO 2016060015A1 JP 2015078346 W JP2015078346 W JP 2015078346W WO 2016060015 A1 WO2016060015 A1 WO 2016060015A1
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WO
WIPO (PCT)
Prior art keywords
sensor holder
stator
electric motor
harness
phase
Prior art date
Application number
PCT/JP2015/078346
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English (en)
Japanese (ja)
Inventor
淳 宮木
純 近藤
Original Assignee
株式会社ミツバ
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 株式会社ミツバ filed Critical 株式会社ミツバ
Publication of WO2016060015A1 publication Critical patent/WO2016060015A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • 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
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby

Definitions

  • the present invention relates to an electric motor used in, for example, a motorcycle.
  • This application claims priority based on Japanese Patent Application No. 2014-211152 filed on Oct. 16, 2014, the contents of which are incorporated herein by reference.
  • the motor includes a stator that is fitted and fixed to the stator housing, and a rotor that is disposed at the radial center of the stator housing and is rotatably supported with respect to the stator.
  • a plurality of permanent magnets are provided on the outer peripheral surface of the rotor.
  • the stator includes a stator core having a substantially cylindrical shape, and a plurality of teeth protruding from the stator core toward the inner peripheral side.
  • Each tooth is provided with a resin insulator, which is an electrically insulating material, and a coil is wound through the insulator.
  • a resin insulator which is an electrically insulating material
  • a coil is wound through the insulator.
  • a plurality of metal bus bars are electrically insulated from each other in a resin mold formed in a substantially annular shape in order to reduce the size and improve the assemblability.
  • An embedded busbar unit may be used.
  • the bus bar unit is excellent in that the coils of each phase are connected by a predetermined connection method in a space-saving manner, but the structure is complicated and expensive.
  • the winding has a large cross-sectional area. For this reason, a large number of fine wires or a thick single wire are adopted.
  • a large number of fine wires or a thick single wire are adopted.
  • the winding time is increased and the winding machine is enlarged, and the wiring is complicated.
  • the winding time can be shortened, but there is a problem that the workability of the routing deteriorates because the rigidity of the coil wire is high. For this reason, although workability
  • the electric motor described in the above-mentioned conventional technology can improve the wiring workability, since six harnesses are pulled out in parallel from the electric motor, a large wiring area is required on the outer peripheral side of the electric motor. There exists a problem that it is not suitable for size reduction of the apparatus which mounts a motor.
  • a sensor holder equipped with a sensor (Hall sensor) for detecting the rotational position of the rotor cannot be positioned, and the rotation of the rotor cannot be measured stably. There is a problem.
  • An object of an aspect of the present invention is to provide an electric motor capable of easily and reliably positioning a sensor holder on which a sensor is mounted. Moreover, the aspect of this invention aims at providing the electric motor which can reduce manufacturing cost, improving wiring workability
  • An electric motor includes a stator having a plurality of coils wound via an insulator; disposed on the inner peripheral side of the stator and rotatably disposed with respect to the stator A rotor that includes a sensor that detects a rotational position of the rotor; and a positioning unit that positions the sensor holder with respect to the insulator.
  • the sensor holder on which the sensor is mounted can be easily and reliably positioned. Moreover, since the sensor holder is positioned with respect to the insulator, the stator and the sensor holder can be integrated with a simple structure. For this reason, the assembly workability
  • the positioning portion is formed on a convex portion formed on one of the back surface of the sensor holder and the insulator, and on the back surface of the sensor holder and the other of the insulator,
  • An inner peripheral wall that is configured by a concave portion that can be fitted to the convex portion, and any one of the convex portion and the concave portion formed on the insulator side is provided at an axial end portion of the insulator. And may be formed on any one of the outer peripheral wall.
  • the positioning portion can have a simple structure.
  • the convex portion may be formed on the back surface of the sensor holder, and the concave portion may be formed on the inner peripheral wall of the insulator.
  • the stator is configured by connecting a plurality of divided cores each having one tooth portion, and the electric motor is wound around each tooth portion.
  • a small coil with a three-phase structure formed by winding a wire by a concentrated winding method and the ends of each small coil adjacent in the circumferential direction are connected or continuously connected, and a plurality of the small coils are connected in series.
  • the phase coil may be delta-connected by connecting a first end portion, and the second end portion of the harness may be pulled out to the outer peripheral side of the stator via a routing portion formed in the sensor holder.
  • the routing portion is formed in the sensor holder and the harness is routed in the sensor holder, a special member or the like is not necessary, and the manufacturing cost can be reduced. Moreover, since the harness is routed using the routing unit, the harness routing workability can be improved.
  • the routing portion may include a guide path in which the harness is arranged and linearly drawn toward the outer peripheral side of the stator.
  • the harness can be routed compactly in the sensor holder and pulled out linearly from the electric motor. For this reason, a large wiring area is not required on the outer peripheral side of the electric motor, and the apparatus on which the electric motor is mounted can be downsized.
  • the cabling unit communicates with the guide path and curves in the circumferential direction toward the inner peripheral side and separates from each other.
  • a wiring path and a third wiring path that extends along the circumferential direction on the inner circumferential side separated from the guide path and communicates with the first wiring path and the second wiring path. Good.
  • This configuration prevents the harness from being bent forcibly when the harness is pulled out of the electric motor in a straight line. For this reason, it can prevent reliably that a harness bends and breaks.
  • the routing portion may be recessed in the sensor holder.
  • Structuring in this way can prevent the harness routed in the sensor holder from protruding from the sensor holder. Since the protrusion part of a harness can be reduced, an electric motor can be reduced in size.
  • the sensor holder on which the sensor is mounted can be easily and reliably positioned. Moreover, since the sensor holder is positioned with respect to the insulator, the stator and the sensor holder can be integrated with a simple structure. For this reason, the assembly workability
  • FIG. 1 It is a perspective sectional view showing a brushless motor concerning an embodiment of the present invention. It is a perspective view which shows the stator and sensor unit which concern on embodiment of this invention. It is a top view which shows the stator and sensor unit which concern on embodiment of this invention. It is an expanded view of the stator which concerns on embodiment of this invention. It is a connection diagram of a small coil according to an embodiment of the present invention. It is a top view of the sensor unit which concerns on embodiment of this invention. It is a bottom view of the sensor unit concerning the embodiment of the present invention. It is a top perspective view of a sensor holder concerning an embodiment of the present invention. It is a bottom perspective view of a sensor holder concerning an embodiment of the present invention. It is a top view of holder which concerns on embodiment of this invention. It is a bottom view of the sensor holder which concerns on embodiment of this invention.
  • FIG. 1 is a perspective sectional view showing the brushless motor 1.
  • FIG. 2 is a perspective view showing the stator 3 and the sensor unit 7.
  • FIG. 3 is a top view showing the stator 3 and the sensor unit 7.
  • a brushless motor (electric motor) 1 is used in, for example, an electric motorcycle.
  • the brushless motor 1 includes a stator 3 having a substantially annular shape, and a rotor 4 provided so as to be rotatable with respect to the stator 3. Further, the brushless motor 1 has a harness 50 and a sensor unit 7. One end of the harness 50 is connected to the winding 12 wound around the stator 3. The harness 50 supplies a current to the winding 12.
  • the sensor unit 7 detects the rotational position of the rotor 4 and feeds back the rotational position to an inverter (not shown).
  • the stator 3 has a stator core 10 having a substantially cylindrical shape.
  • the stator core 10 uses a split core system that can be split in the circumferential direction.
  • the divided core 61 divided from the stator core 10 is formed by, for example, laminating a plurality of plate materials made of a magnetic material in the axial direction. For example, twelve divided cores 61 are provided.
  • Each divided core 61 has a core body 62 extending in the circumferential direction.
  • the core body 62 is a portion that forms an annular magnetic path of the stator core 10 and is formed in a substantially arc shape in an axial plan view.
  • Both ends in the circumferential direction of one core main body 62 constitute a connecting portion connected to the other core main body 62 by press-fitting.
  • the first connecting portion is formed in a convex shape.
  • the second connecting portion is formed in a concave shape that can receive the first connecting portion.
  • each core body 62 On the inner peripheral side of each core body 62, a tooth portion 64 is integrally extended from the substantially central portion in the circumferential direction toward the center of rotation so as to be along the radial direction. Twelve divided cores 61 are provided. For this reason, the stator 3 has twelve teeth portions 64. Each tooth portion 64 is formed in a substantially T shape in an axial plan view. Each of the teeth portions 64 includes a winding drum portion that extends in the radial direction and an inner peripheral portion that extends in the circumferential direction. The winding 12 is wound around the winding body portion by the concentrated winding method via the insulator 11 to form a small coil 81.
  • the insulator 11 is an insulating material for insulation between the tooth portion 64 and the winding 12. The insulator 11 is mounted from the both axial ends of each divided core 61.
  • FIG. 4 is a development view of the stator 3.
  • FIG. 5 is a connection diagram of the small coil 81. 4 and 5, each tooth portion 64 and the small coil 81 wound around the tooth portion 64 will be described with numbers.
  • the terminal portions of the small coils 81 adjacent in the circumferential direction are connected to each other by a crimp terminal 51, respectively. Then, as described below, the first end of the harness 50 is connected to each of the six crimp terminals 51.
  • the crimp terminal to which the first end of the harness 50 is connected is (A) a crimp terminal 51 connecting a terminal portion of the small coil 81 wound around the second tooth portion 64 and a terminal portion of the small coil 81 wound around the third tooth portion 64; (B) a crimp terminal 51 connecting a terminal portion of the small coil 81 wound around the fourth tooth portion 64 and a terminal portion of the small coil 81 wound around the fifth tooth portion 64; (C) a crimp terminal 51 connecting a terminal portion of the small coil 81 wound around the sixth tooth portion 64 and a terminal portion of the small coil 81 wound around the seventh tooth portion 64; (D) a crimp terminal 51 that connects a terminal portion of the small coil 81 wound around the eighth tooth portion 64 and a terminal portion of the small coil 81 wound around the ninth tooth portion 64; (E) a crimp terminal 51 connecting a terminal portion of the small coil 81 wound around the 10th tooth portion 64 and a terminal portion of the small coil 81 wound around the 11th tooth portion
  • the two terminal portions respectively drawn from the small coils 81 formed in the first, fourth, fifth, eighth, ninth, and twelfth teeth portions 64 are in an intersecting state. And these two terminal parts are connected by the crimp terminal 51 with the terminal part of the small coil 81 of the other teeth part 64 arrange
  • the terminal unit described below is described with reference numerals.
  • the two terminal portions 81a and 81b drawn from the small coil 81 formed in the first tooth portion 64 are in an intersecting state.
  • the terminal part 81a which is one of the two terminal parts 81a and 81b is the terminal part of the small coil 81 of the 2nd teeth part 64 arrange
  • 81a and the crimp terminal 51 are connected.
  • the other terminal portion 81b of the small coil 81 of the first tooth portion 64 is connected to the terminal portion 81a of the small coil 81 of the twelfth tooth portion 64 disposed on the side opposite to the side from which the terminal portion 81b is drawn.
  • the two terminal portions 81 a and 81 b drawn from the small coils 81 formed on the fourth, fifth, eighth, ninth, and twelfth teeth portions 64 are also small coils of the first teeth portion 64. It is configured in the same manner as the two terminal portions 81a and 81b drawn from 81 respectively.
  • the two U-phase harnesses 50U1 and 50U2 that are in-phase harnesses are connected to the same terminal (not shown) of the external power source.
  • Two V-phase harnesses 50V1 and 50V2 that are in-phase harnesses are connected to the same terminal (not shown) of the external power supply.
  • Two W-phase harnesses 50W1 and 50W2 that are in-phase harnesses are connected to the same terminal (not shown) of the external power supply.
  • the two small coils 81 are connected in series to form a small coil group 82.
  • the two small coil groups 82 are connected in parallel to form three phase coils 83.
  • the three phase coils 83 are in a delta connection state.
  • harness 50 includes two U-phase harnesses 50U1 and 50U2, two V-phase harnesses 50V1 and 50V2, and two W-phase harnesses 50W1 and 50W2.
  • the harnesses 50U1 to 50W2 for each phase are connected to the terminal portions of the small coils 81 via the crimp terminals 51.
  • the harnesses 50U1 to 50W2 of each phase are arranged to have the same length in order to make the respective resistance values the same.
  • the rotor 4 includes a rotating shaft 6, a rotor core 41 that is fitted and fixed to the rotating shaft 6, and a field magnet 13 that is disposed in the rotor core 41 along the circumferential direction.
  • One end of the rotating shaft 6 is rotatably supported by a bearing of a stator housing (not shown).
  • the rotor core 41 is formed by laminating a plurality of electromagnetic steel plates formed in a substantially disc shape in the axial direction.
  • the rotor core 41 is formed with a press-fitting hole (not shown) through which the rotary shaft 6 can be press-fitted in the center in the radial direction.
  • the axial thickness of the rotor core 41 is set to be substantially the same as the axial thickness of the stator core 10. Furthermore, ten slits (not shown) penetrating in the axial direction are formed in the outer peripheral portion of the rotor core 41 at equal intervals in the circumferential direction. A field magnet 13 is inserted and fixed in these slits.
  • the field magnet 13 is a permanent magnet made of segmented neodymium or the like formed in a block shape.
  • the field magnet 13 is arranged in the slit so that the magnetic poles change in order in the circumferential direction.
  • the axial length of the field magnet 13 is set to substantially match the axial length of the rotor core 41.
  • FIG. 6 is a top view of the sensor unit 7.
  • FIG. 7 is a bottom view of the sensor unit 7.
  • FIG. 8A is a top perspective view of the sensor holder 20.
  • FIG. 8B is a bottom perspective view of the sensor holder 20.
  • FIG. 9A is a top view of the sensor holder 20.
  • FIG. 9B is a bottom view of the sensor holder 20.
  • the sensor unit 7 is provided to detect the rotational position of the rotor 4 based on the magnetic change of a ring-shaped sensor magnet 71 that is externally fitted and fixed to the rotary shaft 6 and to feed back the rotational position to an inverter (not shown). It is done.
  • the sensor unit 7 includes a printed circuit board 8 on which a plurality of Hall elements are mounted, and a sensor holder 20 that holds the printed circuit board 8 and is fixed to the stator 3.
  • the printed board 8 is a glass epoxy board made of an epoxy resin containing glass, for example.
  • the printed circuit board 8 is formed in a rectangular shape in plan view.
  • the printed circuit board 8 is disposed on the back surface of the sensor holder 20.
  • a cable 9 connected to the printed circuit board 8 is also routed on the back surface of the sensor holder 20.
  • the Hall element is an element that detects a magnetic field using the Hall effect.
  • the hall element is mounted on the surface of the printed circuit board 8 facing the rotor core 41 (sensor magnet 71).
  • the plurality of Hall elements are arranged at equal intervals on the same circumference around the rotating shaft 6.
  • the plurality of Hall elements are respectively arranged to face the sensor magnet 71 of the rotary shaft 6.
  • the sensor holder 20 is a member that arranges a plurality of Hall elements mounted on the printed circuit board 8 so as to face the sensor magnet 71.
  • the sensor holder 20 is formed of an insulating material such as polypropylene.
  • the sensor holder 20 has a substantially T-shape extending in the radial direction.
  • the sensor holder 20 includes an inner peripheral portion 21 having a substantially rectangular shape that is disposed close to the rotor core 41 and an outer peripheral portion 24 having a substantially T-shape that is fixed to the stator 3.
  • the inner peripheral portion 21 and the outer peripheral portion 24 are integrally formed to form the sensor holder 20.
  • the printed circuit board 8 is fixed to the back surface of the inner peripheral portion 21.
  • a harness 50 is routed on the upper surface of the outer peripheral portion 24.
  • Both end portions in the circumferential direction of the outer peripheral portion 24 constitute a mounting piece 25 that is fixed to two adjacent split cores 61.
  • a bolt is inserted through the through hole 26 provided in the mounting piece 25 so as to overlap the through hole 63 provided in the split core 61.
  • the sensor holder 20 is fixed to the stator 3 (stator core 10).
  • the rear surface of the inner peripheral portion 21 is provided with convex portions 22 at both ends in the circumferential direction.
  • the convex portion 22 is fitted into the concave portion 16 provided at the end portion in the axial direction of the insulator 11 (see FIGS. 1 to 3).
  • the recess 16 is formed at the upper end of the inner peripheral wall that prevents the small coil 81 from being collapsed.
  • the sensor holder 20 is positioned with respect to the stator 3. That is, the concave portion 16 and the convex portion 22 constitute a positioning portion 15 that positions the sensor holder 20 with respect to the stator 3.
  • the routing unit 30 includes a guide path 31 and a routing path 33.
  • the guide path 31 is a groove-shaped portion that arranges and holds the six harnesses 50.
  • the guide path 31 is formed on the outermost peripheral side of the outer peripheral portion 24.
  • the guide path 31 includes a U-phase guide groove 32U, a V-phase guide groove 32V, and a W-phase guide groove 32W.
  • the three guide grooves 32U, 32V, 32W are arranged in parallel in the circumferential direction.
  • Each guide groove 32U, 32V, 32W accommodates and holds two harnesses 50 in an up-down direction.
  • Each guide groove 32U, 32V, 32W guides the two harnesses 50 in the radial direction.
  • U-phase guide groove 32U accommodates and holds U-phase harnesses 50U1 and 50U2.
  • V-phase guide groove 32V accommodates and holds V-phase harnesses 50V1 and 50V2.
  • W-phase guide groove 32W accommodates and holds W-phase harnesses 50W1 and 50W2.
  • the routing path 33 is a part where the six harnesses 50 accommodated and held in the guide path 31 are routed toward the small coils 81.
  • the routing path 33 is formed on the inner peripheral side of the outer peripheral portion 24.
  • the routing path 33 includes a first routing path 34, a second routing path 35, and a third routing path 36.
  • the first routing path 34 and the second routing path 35 communicate with the three guide grooves 32U, 32V, 32W.
  • the first routing path 34 and the second routing path 35 are curved in the circumferential direction toward the inner peripheral side and are separated from each other.
  • the third routing path 36 communicates with the first routing path 34 and the second routing path 35 while extending along the circumferential direction on the inner peripheral side separated from the three guide grooves 32U, 32V, 32W.
  • the routing path 33 (routing paths 34, 35, 36) is formed by being surrounded by a pair of guide side walls 37, a guide inner wall 38 and a guide convex wall 39. In other words, the routing path 33 is recessed in the sensor holder 20.
  • the pair of guide side walls 37 is configured by extending the outer walls of the guide grooves 32V and 32W on the both end sides toward the inner peripheral side among the three guide grooves 32 arranged in parallel in the circumferential direction. That is, the pair of guide side walls 37 are formed so as to be curved in the circumferential direction and separated from each other toward the inner peripheral side while being connected to the outer walls of the guide grooves 32V and 32W.
  • the guide inner wall 38 is also an outer peripheral surface of the inner peripheral portion 21.
  • the guide inner wall 38 is formed such that a surface facing the outer peripheral side extends along the circumferential direction.
  • the guide convex wall 39 is erected at the center of the outer peripheral portion 24. That is, the guide convex wall 39 is disposed so as to be surrounded by the guide groove 32, the guide side wall 37, and the guide inner wall 38.
  • the guide convex wall 39 is formed in a water droplet shape with the sharp end portion facing the outer peripheral side and the arc portion facing the inner peripheral side.
  • the harness 50 includes two U-phase harnesses 50U1 and 50U2, two V-phase harnesses 50V1 and 50V2, and two W-phase harnesses 50W1 and 50W2.
  • the harness 50 is routed so as to pass through the sensor holder 20.
  • the U-phase harnesses 50U1 and 50U2 are accommodated and held in the U-phase guide groove 32U disposed in the center among the three guide grooves 32.
  • the U-phase harness 50 ⁇ / b> U ⁇ b> 1 is routed to the first routing path 34.
  • the U-phase harness 50U2 is routed in the second routing path 35. That is, U-phase harnesses 50U1 and 50U2 overlap in the vertical direction in U-phase guide groove 32U.
  • the U-phase harnesses 50U1 and 50U2 are bent along the guide convex wall 39 in the routing path 33 and branched so as to be separated from each other. And it is routed along the stator 3 toward the terminal portion of each small coil 81.
  • the V-phase harnesses 50V1 and 50V2 are accommodated and held in the V-phase guide groove 32V arranged on the first end side among the three guide grooves 32.
  • the V-phase harness 50 ⁇ / b> V ⁇ b> 1 is routed to the first routing path 34.
  • the V-phase harness 50V2 is routed in the first routing path 34 and the third routing path 36. That is, V-phase harnesses 50V1 and 50V2 overlap vertically in V-phase guide groove 32V.
  • the V-phase harness 50V1 is curved along the guide side wall 37
  • the V-phase harness 50V2 is curved along the guide convex wall 39 and the guide side wall 37
  • the V-phase harnesses 50V1 and 50V2 are separated from each other. Branch to do. And it is routed along the stator 3 toward the terminal portion of each small coil 81.
  • the W-phase harnesses 50W1 and 50W2 are accommodated and held in the V-phase guide groove 32W disposed on the second end side among the three guide grooves 32.
  • the W-phase harness 50 ⁇ / b> W ⁇ b> 1 is routed to the second routing path 35.
  • the W-phase harness 50W2 is routed to the second routing path 35 and the third routing path 36. That is, W-phase harnesses 50W1 and 50W2 overlap vertically in W-phase guide groove 32W.
  • the W-phase harness 50W1 is curved along the guide sidewall 37
  • the W-phase harness 50W2 is curved along the guide convex wall 39 and the guide sidewall 37
  • the W-phase harnesses 50W1 and 50W2 are separated from each other. Branch to do. And it is routed along the stator 3 toward the terminal portion of each small coil 81.
  • a stay 28 that prevents the harness 50 from falling off is disposed above the three guide grooves 32.
  • the stay 28 is fixed so as to overlap the mounting piece 25 of the sensor holder 20.
  • the two U-phase harnesses 50U1 and 50U2 are connected to one U-phase harness 50U on the outer peripheral side with respect to the sensor holder 20.
  • two V-phase harnesses 50V1 and 50V2 are connected to one V-phase harness 50V.
  • Two W-phase harnesses 50W1 and 50W2 are connected to one W-phase harness 50W.
  • the brushless motor 1 With such a configuration, the brushless motor 1 generates a magnetic field in the stator core 10 by supplying a current supplied from an external power source to each phase coil 83 via each harness 50.
  • the rotor 4 is rotated by the magnetic attractive force and repulsive force between the magnetic field and the field magnet 13.
  • the Hall element is accurately positioned with respect to the sensor magnet 71 disposed on the rotating shaft 6. Can be opposed. Therefore, the Hall element can stably output a detection signal corresponding to the position (rotational position) of the sensor magnet 71. Moreover, since the sensor holder 20 is positioned with respect to the insulator 11, the stator and the sensor holder can be integrated with a simple structure. For this reason, the assembly workability
  • the sensor holder 20 is provided with a convex portion 22, the insulator 11 is provided with a concave portion 16, and the convex portion 22 and the concave portion 16 are configured as a positioning portion 15 where the sensor holder 20 is positioned with respect to the stator 3. For this reason, the structure of the positioning part 15 can be simplified.
  • the convex portion 22 on the sensor holder 20 side, the thickness of the sensor holder 20 can be reduced as compared with the case where the concave portion 16 is provided in the sensor holder 20. That is, when the recess 16 is provided in the sensor holder 20, it is necessary to set the thickness of the sensor holder 20 to a thickness capable of forming the recess 16. Since it is not necessary to do this, the sensor holder 20 can be reduced in size by this thickness.
  • the connection of the phase coil 83 can be completed without using the bus bar unit as in the conventional case, and the manufacturing cost can be reduced.
  • the harness 50 drawn from the brushless motor 1 is routed to the sensor holder 20 of the sensor unit 7, the manufacturing cost can be reduced without requiring a special member.
  • the harness 50 is routed using the sensor holder 20, the routing workability of the harness 50 can be improved.
  • the harness 50 since the harness 50 is accommodated and held in the guide path 31 of the sensor holder 20, the harness 50 can be gathered small and drawn out from the brushless motor 1 linearly. For this reason, a large wiring area is not required on the outer peripheral side of the brushless motor 1, and a device (such as an electric motorcycle) on which the brushless motor 1 is mounted can be downsized.
  • the harness 50 is routed without difficulty in the routing path 33 of the sensor holder 20.
  • operativity of the harness 50 can be improved. That is, the routing path 33 communicates with the guide groove 32, curves in the circumferential direction toward the inner peripheral side, and is separated from the first routing path 34 and the second routing path 35, and the guide groove.
  • the first routing path 34 and the third routing path 36 communicating with the second routing path 35 are provided while extending along the circumferential direction on the inner peripheral side spaced apart from 32. For this reason, the harness 50 can be smoothly routed in the routing path 33 of the sensor holder 20, and the harness can be reliably prevented from being bent and disconnected.
  • the harness 50 routed in the routing path 33 can be prevented from protruding from the sensor holder 20.
  • the brushless motor 1 can be reduced in size by the protruding amount of the protruding portion of the harness.
  • the present invention is not limited to the above-described embodiment, and includes various modifications made to the above-described embodiment without departing from the spirit of the present invention.
  • the case where the brushless motor 1 is used for an electric motorcycle has been described.
  • the embodiment is not limited to this, and the structure of the brushless motor 1 of the present embodiment can be applied to various electric motors.
  • the embodiment is not limited to this, and any configuration may be used as long as the terminals of the small coils 81 can be electrically connected to each other.
  • the recessed part 16 was provided in the inner peripheral wall of the insulator 11 in the inner peripheral wall of the insulator 11 in the inner peripheral wall of the insulator 11.
  • the embodiment is not limited to this, and the recess 16 may be provided on the outer peripheral wall of the insulator 11.
  • the insulator 11 may be provided with the convex portion 22, the sensor holder 20 may be provided with the concave portion 16, and the convex portion 22 and the concave portion 16 may constitute the positioning portion 15.
  • the embodiment is not limited to this, and the terminal portion of each small coil 81 is directly pulled out on the stator 3, and the terminal portion of each small coil 81 is further routed as it is in the routing path 33 of the sensor holder 20. May be.
  • a portion of the terminal portion of each small coil 81 drawn on the stator 3 functions as the harness 50.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Motor Or Generator Frames (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

L'invention concerne un moteur électrique (1) qui est pourvu : d'un stator (3) qui a de multiples bobines (81) chacune étant enroulée autour d'un isolant (11) ; d'un rotor (4) qui est disposé sur le côté périphérique interne du stator (3) de manière rotative par rapport au stator (3) ; d'un support de capteur (20) dans lequel est installé un capteur permettant de détecter la position de rotation du rotor (4) ; et de parties de positionnement permettant de positionner le support de capteur (20) par rapport aux isolants (11).
PCT/JP2015/078346 2014-10-16 2015-10-06 Moteur électrique WO2016060015A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014211542A JP6488100B2 (ja) 2014-10-16 2014-10-16 電動モータ
JP2014-211542 2014-10-16

Publications (1)

Publication Number Publication Date
WO2016060015A1 true WO2016060015A1 (fr) 2016-04-21

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PCT/JP2015/078346 WO2016060015A1 (fr) 2014-10-16 2015-10-06 Moteur électrique

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JP (1) JP6488100B2 (fr)
WO (1) WO2016060015A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0678484A (ja) * 1992-08-26 1994-03-18 Matsushita Electric Works Ltd ブラシレスモータ
JP2003264971A (ja) * 2002-03-07 2003-09-19 Tokushu Denso Kk ブラシレスモータ
JP2009081908A (ja) * 2007-09-25 2009-04-16 Hitachi Appliances Inc 駆動用モータ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0678484A (ja) * 1992-08-26 1994-03-18 Matsushita Electric Works Ltd ブラシレスモータ
JP2003264971A (ja) * 2002-03-07 2003-09-19 Tokushu Denso Kk ブラシレスモータ
JP2009081908A (ja) * 2007-09-25 2009-04-16 Hitachi Appliances Inc 駆動用モータ

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