WO2015140955A1 - Electric motor manufacturing method and electric motor - Google Patents

Electric motor manufacturing method and electric motor Download PDF

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Publication number
WO2015140955A1
WO2015140955A1 PCT/JP2014/057492 JP2014057492W WO2015140955A1 WO 2015140955 A1 WO2015140955 A1 WO 2015140955A1 JP 2014057492 W JP2014057492 W JP 2014057492W WO 2015140955 A1 WO2015140955 A1 WO 2015140955A1
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WO
WIPO (PCT)
Prior art keywords
winding
winding connection
electric motor
opening
stator
Prior art date
Application number
PCT/JP2014/057492
Other languages
French (fr)
Japanese (ja)
Inventor
健一 江上
太一 岡
Original Assignee
日立金属株式会社
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 日立金属株式会社 filed Critical 日立金属株式会社
Priority to JP2016508391A priority Critical patent/JP6414204B2/en
Priority to PCT/JP2014/057492 priority patent/WO2015140955A1/en
Publication of WO2015140955A1 publication Critical patent/WO2015140955A1/en

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    • 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
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/0056—Manufacturing winding connections
    • H02K15/0068—Connecting winding sections; Forming leads; Connecting leads to terminals
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations

Definitions

  • the present invention relates to a method of manufacturing an electric motor and an electric motor including a stator formed by winding a winding around a plurality of magnetic cores, a rotor rotating with respect to the stator, and a bus ring to which the winding is connected.
  • an annular stator fixed to the engine, a rotor rotating with respect to the stator, and a plurality of motor coils provided on the stator correspond to the U phase, the V phase, and the W phase.
  • an annular power distribution component connected in this manner is formed by arranging a plurality of arc-shaped conductive parts in an annular shape and connecting these conductive parts with a mold resin.
  • the plurality of conductive parts are made of an insulated wire whose conductor is covered with an insulator, and bent portions are formed at both ends thereof so as to protrude toward the radially inner side of the stator.
  • the conductor is exposed from the insulator at the bent portion, and a terminal portion to which the winding of the motor coil is connected is formed by the bent portion of the adjacent conductive part.
  • the terminal portion that is, the power distribution component is connected by, for example, soldering or fusing welding.
  • an object of the present invention is to provide a method of manufacturing an electric motor and an electric motor that can be reliably connected to an end of a winding and can improve work efficiency.
  • the present invention provides a stator formed by winding a plurality of magnetic cores arranged in an annular shape, a rotor rotating with respect to the stator, and a concentric shape with the stator.
  • Is a method of manufacturing an electric motor including a bus ring having a winding connection portion to which the winding is connected, and an insertion step of inserting an end portion of the winding into the winding connection portion; A pressurizing step of pressurizing the winding connection portion so that the winding connection portion and an end of the winding are in contact with each other, and energizing the winding connection portion in a state where the winding connection portion is pressurized And a welding step of welding the winding connection portion and the end portion of the winding, and the winding connection portion is formed in an annular shape having an opening at one place, Pressurize the winding connection so that the opening width of the opening is narrower than the thickness of the winding A method for manufacturing an electric motor is provided.
  • the present invention provides a stator formed by winding a plurality of magnetic cores arranged in an annular shape, a rotor rotating with respect to the stator, and the stator. And a bus ring having a winding connection portion to which the winding is connected, the winding connection portion is formed in an annular shape having an opening at one place, and the opening width of the opening is the Provided is an electric motor in which the winding connecting portion and the end of the winding are connected in a state narrower than the thickness of the winding.
  • FIG. 5 is an enlarged perspective view of the terminal portion and its peripheral portion, showing the first to third bus rings.
  • a part of connection process of the winding connection part of the 1st bus ring and the end of a plurality of U phase windings in the electric motor concerning a 2nd embodiment of the present invention is shown, and the end of a plurality of windings It is explanatory drawing which shows the state which the part inserted in the coil
  • a part of the connection process of the winding connection part of the 1st bus ring and the end part of a plurality of U phase windings in the electric motor concerning a 2nd embodiment is shown, and the winding connection part is pressurized. It is explanatory drawing which shows the state which exists.
  • a part of connection process of the winding connection part of the 1st bus ring and the end of a plurality of U phase windings in the electric motor concerning a 2nd embodiment is shown, and a winding connection part and a plurality of windings It is explanatory drawing which shows the state which the edge part of is welded.
  • a part of connection process of the winding connection part of the 1st bus ring and the end of a plurality of U phase windings in an electric motor concerning a 3rd embodiment of the present invention is shown, and the end of a plurality of windings is shown. It is explanatory drawing which shows the state which the part inserted in the coil
  • a part of connection process of the winding connection part of the 1st bus ring and the end of a plurality of windings of U phase in the electric motor concerning a 3rd embodiment is shown, and the winding connection part is pressurized. It is explanatory drawing which shows the state which exists.
  • the electric motor which concerns on 3rd Embodiment shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a several U-phase coil
  • the electric motor which concerns on the 4th Embodiment of this invention shows a part of connection process of the winding connection part of the 1st bus ring, and the edge part of a some U-phase coil
  • the electric motor which concerns on 4th Embodiment WHEREIN The part of the connection process of the winding connection part of the 1st bus ring and the edge part of a some U-phase coil
  • the electric motor which concerns on 4th Embodiment WHEREIN A part of connection process of the winding connection part of a 1st bus ring and the edge part of a some U-phase coil
  • the electric motor which concerns on the 5th Embodiment of this invention shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a some U-phase coil
  • the electric motor which concerns on 5th Embodiment shows a part of connection process of the winding connection part of the 1st bus ring, and the edge part of the some winding of U phase, and the winding connection part is pressurized. It is explanatory drawing which shows the state which exists.
  • the electric motor which concerns on 5th Embodiment shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a several U-phase coil
  • the electric motor which concerns on the 6th Embodiment of this invention shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a some U-phase coil
  • the electric motor which concerns on 6th Embodiment shows a part of connection process of the winding connection part of the 1st bus ring, and the edge part of the some winding of U phase, and the winding connection part is pressurized. It is explanatory drawing which shows the state which exists.
  • the electric motor which concerns on 6th Embodiment shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a several U-phase coil
  • FIG. 1 is a schematic diagram for explaining an outline of a configuration example of the electric motor 1 according to the first embodiment of the present invention.
  • the electric motor 1 includes a stator 3 that is a stator, a rotor 2 that rotates with respect to the stator 3, and first to fourth bus rings 41 to 44 to which a winding 32 is connected.
  • a winding 32 an enameled wire in which a wire is covered with enamel can be used.
  • the rotor 2 includes a shaft 21 that is rotatably supported on the same axis as the stator 3 by a bearing (not shown), and a cylinder that is fixed to the outer peripheral surface of the shaft 21 and has N and S poles alternately magnetized in the circumferential direction.
  • Shaped magnet 22 is
  • the stator 3 is configured by winding a winding 32 around a plurality (24 in the present embodiment) of magnetic cores 31 arranged in an annular shape around the rotation axis O of the shaft 21.
  • the 24 magnetic cores 31 are composed of eight U-phase magnetic cores 31U, eight V-phase magnetic cores 31V, and eight W-phase magnetic cores 31.
  • the U-phase magnetic core 31U, the V-phase magnetic core 31V, and the W-phase magnetic core 31W are arranged in this order.
  • a U-phase winding 32 ⁇ / b> U is wound around the U-phase magnetic core 31 ⁇ / b> U as the winding 32.
  • the U-phase winding 32 ⁇ / b> U has one end 321 ⁇ / b> U that is electrically connected to the first bus ring 41 and the other end 322 ⁇ / b> U that is electrically connected to the fourth bus ring 44. Has been.
  • a V-phase winding 32 ⁇ / b> V is wound around the V-phase magnetic core 31 ⁇ / b> V as the winding 32.
  • the V-phase winding 32 ⁇ / b> V has one end 321 ⁇ / b> V electrically connected to the second bus ring 42, and the other end 322 ⁇ / b> V electrically connected to the fourth bus ring 44. Has been.
  • a W-phase winding 32 ⁇ / b> W is wound around the W-phase magnetic core 31 ⁇ / b> W as the winding 32.
  • the W-phase winding 32 ⁇ / b> W has one end 321 ⁇ / b> W electrically connected to the third bus ring 43 and the other end 322 ⁇ / b> W electrically connected to the fourth bus ring 44. Has been.
  • the fourth bus ring 44 includes the other end 322U of the U-phase winding 32U, the other end 322V of the V-phase winding 32V, and the other end 322W of the W-phase winding 32W. It functions as an electrically connected neutral phase bus ring.
  • One end 321U of the U-phase winding 32U is located on the V-phase winding 32V side in the circumferential direction of the stator 3, and the other end 322U is a W-phase winding 32W in the circumferential direction of the stator 3.
  • One end 321V of the V-phase winding 32V is located on the W-phase winding 32W side in the circumferential direction of the stator 3, and the other end 322V is a U-phase winding 32U in the circumferential direction of the stator 3. Located on the side.
  • One end 321W of the W-phase winding 32W is located on the U-phase winding 32U side in the circumferential direction of the stator 3, and the other end 322W is a V-phase winding 32V in the circumferential direction of the stator 3. Located on the side.
  • the first to third bus rings 41 to 43 are connected to power supply terminals 410, 420, and 430, respectively, and the sine whose phase is shifted by 120 ° from the inverter (not shown) via the power supply terminals 410, 420, and 430.
  • a wavy drive current is supplied to the first to third bus rings 41 to 43.
  • a rotational magnetic field is formed in the stator 3 by this driving current, and the magnet 22 receives the rotational force by the attractive force and the repulsive force due to the rotational magnetic field and rotates the shaft 21 around the rotational axis O.
  • FIG. 2 is a plan view of the stator 3 assembled with the first to third bus rings 41 to 43 as viewed from the direction of the rotation axis O of the shaft 21.
  • FIG. 3 is a perspective view illustrating a configuration example of the magnetic core assembly 30.
  • the stator 3 is configured by arranging a plurality (24 in this embodiment) of magnetic core assemblies 30 formed by winding a winding 32 around a magnetic core 31 in an annular shape.
  • the magnetic core assembly 30 has an insulating insulator 33 mounted on a magnetic core 31 formed by laminating a plurality of electromagnetic steel plates 310, and the insulator 33 is interposed via the insulator 33.
  • a winding 32 is wound around the outside of the magnetic core 31.
  • the insulator 33 is opposed to an insulating portion 336 (shown by a broken line in FIG. 3) interposed between the magnetic core 31 and the winding 32 with the insulating portion 336 sandwiched in the radial direction of the rotor 2 (see FIG. 1).
  • An outer flange 335 projecting from 332 toward the opposite side of the first wall 331, and a third wall erected so as to face the second wall 332 from the end of the outer flange 335 It has the part 333 integrally.
  • the first to third wall portions 331 to 333 are formed on the first wall portion 331, the second wall portion 332, and the third wall portion 333 along the radial direction of the rotor 2 from the rotation axis O side of the shaft 21. They are erected in order.
  • the second wall portion 332 is formed with a second insertion portion 332a through which one end portion 321 of the winding 32 is inserted, and the one end portion 321 of the winding 32 is rotated from the insertion portion 332a to the shaft 21. It is pulled out along a direction parallel to the axis O direction.
  • the first wall portion 331 is formed with a first insertion portion 331a through which the other end portion 322 of the winding 32 is inserted, and the other end portion 322 of the winding 32 is connected to the shaft from the first insertion portion 331a. 21 is drawn toward the rotation axis O side.
  • the insulator 33 has a holding portion 330 that holds the first to third bus rings 41 to 43.
  • the holding unit 330 includes a part of the second wall part 332, a third wall part 333, and a part of the second wall part 332 and the third wall part 333. It is comprised by the outer collar part 335 to connect.
  • the outer flange portion 335 functions as the bottom portion of the holding portion 330.
  • holding section 330 is provided on the outer peripheral side of winding 32 (U-phase winding 32U, V-phase winding 32V, and W-phase winding 32W).
  • the third wall portion 333 is formed with a fitting recess 333a into which the fixing member 40 for fixing the first to third bus rings 41 to 43 is fitted.
  • FIG. 4 shows the first to third bus rings 41 to 43, and is an enlarged perspective view of the terminal portions 41a, 42a, 43a and their peripheral portions.
  • the first to third bus rings 41 to 43 are arranged side by side along the direction of the rotation axis O (see FIG. 1) of the shaft 21, and a plurality (24 in this embodiment) are arranged. Are held by the holding portion 330 of the stator 3 while being fixed together by the fixing member 40.
  • the first to third bus rings 41 to 43 are formed by bending a linear conductive member in which a central conductor 400a made of a highly conductive metal such as copper is covered with an insulator 400b made of resin. .
  • the first bus ring 41 protrudes inward in the radial direction of the stator 3, and a plurality (eight in this embodiment) of terminal portions 41 a to which one end 321 U of the U-phase winding 32 U is connected, and the stator 3 (eight in the present embodiment) arcuate portions 412 arranged along the circumferential direction.
  • the plurality of terminal portions 41 a are provided between the plurality of arc portions 412. Further, at both ends of the first bus ring 41, the central conductor 400a is exposed from the insulator 400b, and the power supply terminal 410 is connected to the exposed central conductor 400a by crimping or crimping.
  • the second bus ring 42 includes a plurality of (in this embodiment, eight) terminal portions 42a to which one end portion 321V of the V-phase winding 32V is connected. , And a plurality (eight in this embodiment) of arc portions 422.
  • power supply terminals 420 are connected to both ends of the second bus ring 42.
  • the third bus ring 43 includes a plurality of (eight in the present embodiment) to which one end 321W of the W-phase winding 32W is connected. Terminal portion 43a and a plurality (eight in this embodiment) of arc portions 432 are provided. In addition, power supply terminals 430 are connected to both ends of the third bus ring 43.
  • the terminal portion 41a of the first bus ring 41 has one end of the U-phase winding 32U.
  • the terminal portion 42a of the second bus ring 42 is at the pulling position of one end 321V of the V-phase winding 32V, and the terminal portion 43a of the third bus ring 43 is W-phase winding. It arrange
  • One end portions 321U, 321V, and 321W of the U-phase winding 32U, the V-phase winding 32V, and the W-phase winding 32W extend along a direction parallel to the rotation axis O of the shaft 21 from the stator 3 side.
  • the first to third bus rings 41 to 43 are inserted into the terminal portions 41a, 42a and 43a, respectively.
  • FIG. 4 shows a state where one end 321V of the V-phase winding 32V among the one end 321U, 321V, 321W is inserted into the terminal portion 42a.
  • FIGS. 5A to 5C are explanatory views showing a connection process between the winding connection portion 411 of the first bus ring 41 and one end portion 321U of the U-phase winding 32U, and FIG.
  • FIG. 5B shows the state where the winding connection 411 is pressurized
  • FIG. 5C shows the U-phase of the winding connection 411.
  • one end 321U of the winding 32U is welded.
  • one end 321U of the U-phase winding 32U is indicated by a broken line.
  • the terminal portion 41a includes a winding connection portion 411 formed in an annular shape having an opening 411a at one place, and a winding connection portion 411 sandwiching the pair of adjacent arc portions 412a and 412b and the opening 411a.
  • the pair of extending portions 413 and 414 extend in parallel from the respective end portions of the pair of adjacent arc portions 412a and 412b toward the radially inner side of the stator 3 (see FIG. 2). ing.
  • the length L 1 in the extending direction of the pair of extending portions 413 and 414 is from the arc portions 412a and 412b to the distal end in the radial direction of the first bus ring 41 in the winding connecting portion 411.
  • the distance L 2 is about 1/10 to 9/10.
  • the length L 1 in the extending direction of the pair of extending portions 413, 414 is the distance L 2 from the arc portions 412 a, 412 b to the radial tip of the first bus ring 41 in the winding connection portion 411. It is more desirable to be about 1/5 to 3/5.
  • connection method between the winding connection portion 411 of the terminal portion 41a and the one end portion 321U of the U-phase winding 32U is to insert the one end portion 321U of the U-phase winding 32U into the winding connection portion 411.
  • a step (see FIG. 5A) a pressurizing step (see FIG. 5B) for pressurizing the winding connection portion 411 so that the winding connection portion 411 and one end 321U of the U-phase winding 32U are in contact with each other;
  • a welding step (see FIG. 5C) in which the winding connection portion 411 is energized to weld the winding connection portion 411 and one end portion 321U of the U-phase winding 32U.
  • the winding connection between the pair of electrodes 11 and 12 is performed so that the opening width d of the opening 411a of the winding connection portion 411 is narrower than the thickness of the U-phase winding 32U. Pressure is applied in the direction of the arrow in FIG.
  • the thickness of the winding refers to the narrowest dimension in the width direction in the cross section of the end of the winding. For example, if the cross section is a circular winding (round winding), the outer diameter is thick, and if the cross section is a rectangular winding (flat winding), the short side Length becomes thickness.
  • the opening width d of the opening 411a and the distance between the opposing surfaces 413a and 414a of the pair of extending portions 413 and 414 are formed to be equal. Therefore, the distance between the opposing surfaces 413a and 414a of the pair of extending portions 413 and 414 approaches the distance shorter than the thickness dimension of the U-phase winding 32U by the pressurizing step.
  • a current is passed through the winding connection portion 411 through the pair of electrodes 11 and 12 while the winding connection portion 411 is pressurized, and the winding connection portion 411 and the U-phase winding are wound.
  • the one end 321U of the wire 32U is welded and electrically connected. In this welding process, for example, welding by fusing is used.
  • the winding connecting portion 411 is pressed so that the opening width d of the opening 411a of the winding connecting portion 411 is narrower than the thickness of the U-phase winding 32U.
  • the winding 32U does not come out of the winding connection part 411 through the opening 411a, and the connection between the winding connection part 411 and one end 321U of the U-phase winding 32U can be reliably performed. It leads to improvement of efficiency.
  • 6A to 6C show a connection process between the winding connection portion 411 of the first bus ring 41 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the second embodiment of the present invention.
  • 6A is a state in which one end 341 of the plurality of windings 34 is inserted into the winding connection part 411
  • FIG. 6B is a state in which the winding connection part 411 is pressurized
  • FIG. 6C is a state in which the winding connection portion 411 and one end portion 341 of the plurality of windings 34 are welded.
  • one end 341 of the plurality of windings 34 is indicated by a broken line.
  • the electric motor 1 according to the present embodiment is different from the electric motor 1 according to the first embodiment, and a plurality of (15 in the present embodiment) windings 34 are bundled to form a magnetic core 31 (FIG. 1 and FIG. 1). (See FIG. 3).
  • the plurality of windings 34 are windings having a circular cross section (round windings), each of which is thinner than the winding 32 in the first embodiment.
  • One end portion 341 of the plurality of windings 34 is inserted into the winding connection portion 411 of the first bus ring 41. The same applies to the second and third bus rings 42 and 43.
  • the winding connection portion 411 is formed by a pair of electrodes 11 and 12 so as to close the opening 411a of the winding connection portion 411.
  • the pressure is applied in the direction of the arrow in FIG. 6B. That is, the opposing surfaces 413a and 414a of the pair of extending portions 413 and 414 come into contact with each other by the pressurizing process.
  • the present invention is not limited to this, and the opening width of the opening 411a may be narrower than the thickness of the winding 34, as in the first embodiment.
  • a current is passed through the winding connection portion 411 by the pair of electrodes 11 and 12 in a state where the winding connection portion 411 is pressurized, and one end portion 341 of the winding connection portion 411 and the plurality of windings 34. Are electrically connected. Therefore, in the electric motor 1 according to the present embodiment, the winding connection portion 411 and the end portions 341 of the plurality of windings 34 are electrically connected in a state where the opening 411a of the winding connection portion 411 is closed. Yes.
  • each of the plurality of windings 34 is smaller than the thickness of the winding 32 in the first embodiment, when the winding connection portion 411 is pressed in the pressurizing step, the winding 34 However, the opening 411a becomes narrower than the thickness of the winding 34 when the winding connecting portion 411 is pressurized, so that the winding 34 is pulled out from the winding connecting portion 411. Can be suppressed.
  • the winding connection portion 411 is heated uniformly over the entire circumference by energizing the winding connection portion 411 with the opening 411a of the winding connection portion 411 closed. Since unevenness in welding between the winding connection portion 411 and the end portions 341 of the plurality of windings 34 is reduced, the plurality of windings 34 can be stably connected to the winding connection portion 411 without breaking.
  • 7A to 7C show a connection process between the winding connection portion 411 of the first bus ring 41 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the third embodiment of the present invention.
  • 7A is a state in which one end 341 of the plurality of windings 34 is inserted into the winding connection part 411
  • FIG. 7B is a state in which the winding connection part 411 is pressurized
  • FIG. 7C is a state in which the winding connection portion 411 and one end portion 341 of the plurality of windings 34 are welded.
  • one end 341 of the plurality of windings 34 is indicated by a broken line.
  • the pair of extending portions 413 and 414 of the terminal portion 41 a has an opening D 2 between the ends on the arc portions 412 a and 412 b side.
  • the winding connection portion 411 and the end portions 341 of the plurality of windings 34 are electrically connected in a state larger than the opening width d 2 of 411a.
  • the opening width d 2 of the opening 411a, as in the first embodiment is smaller than the thickness of the winding 34.
  • the pair of extending portions 413 and 414 is a distance between the end portions on the arc portions 412a and 412b side in the pressurizing step.
  • Change amount (D 1 -D 2 ) is smaller than the change amount (d 1 -d 2 ) of the opening width of the opening 411a.
  • the circular arc portion 412a of the pair of extending portions 413 and 414 before entering the pressing step the opening width of the distance D 1 and the opening 411a between the ends of 412b side d Equal to 1 .
  • the distance between the ends on the arc portions 412a and 412b side of the pair of extending portions 413 and 414 is specifically the end portions on the arc portions 412a and 412b side of the pair of extending portions 413 and 414.
  • the distance between the opposing surfaces 413a and 414a is shown. Therefore, the opposing surfaces 413a and 414a of the pair of extending portions 413 and 414 are closer to the opening 411a side than the arc portions 412a and 412b side.
  • the pair of extending portions 413 and 414 has the first bus ring because the change amount of the distance between the end portions on the arc portions 412a and 412b side in the pressurizing process is smaller than the change amount of the opening width of the opening 411a.
  • the winding connection portion 411 and the end portion 341 of the winding 34 can be connected without changing the radial dimension at 41.
  • FIGS. 8A to 8C a method of connecting the winding connection portion and the ends of the plurality of windings in the electric motor 1 according to the fourth embodiment of the present invention will be described with reference to FIGS. 8A to 8C.
  • the connection method between the winding connection portion 411 of the first bus ring 41 and the end portions 341 of the plurality of windings 34 will be described below as an example. To do.
  • FIG. 8A to 8C show the connection process between the winding connection portion 411 of the first bus ring 41 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the fourth embodiment of the present invention.
  • 8A is a state in which one end 341 of the plurality of windings 34 is inserted into the winding connection part 411
  • FIG. 8B is a state in which the winding connection part 411 is pressurized
  • FIG. 8C is a state in which the winding connection portion 411 and one end portion 341 of the plurality of windings 34 are welded.
  • one end 341 of the plurality of windings 34 is indicated by a broken line.
  • the electric motor 1 has the winding connection portion 411 and the end portions 341 of the plurality of windings 34 in a state where the opening 411a of the winding connection portion 411 is closed. And are electrically connected.
  • the arc portion 412a of the pair of extending portions 413 and 414 of the pressurization, the arc portion 412a of the pair of extending portions 413 and 414 at a distance D 1 and after pressing between the ends of 412b side , 412b side distance D 2 is equal to the distance D 2 between the ends of the pair of extending portions 413, 414 on the arc portions 412a, 412b side in the pressurizing step (D 1 -D 2 ) Is zero, and it can be seen that it is smaller than the change amount d 1 of the opening width of the opening 411a.
  • FIGS. 9A to 9C a method of connecting the winding connection portion and the ends of the plurality of windings in the electric motor 1 according to the fifth embodiment of the present invention will be described with reference to FIGS. 9A to 9C.
  • the connection method between the winding connection portion 511 of the first bus ring 51 and the end portions 341 of the plurality of windings 34 will be described below as an example. To do.
  • 9A to 9C show a connection process between the winding connection portion 511 of the first bus ring 51 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the fifth embodiment of the present invention.
  • 9A is a state in which one end 341 of the plurality of windings 34 is inserted into the winding connection part 511
  • FIG. 9B is a state in which the winding connection part 511 is pressurized
  • FIG. 9C is a state in which the winding connection portion 511 and one end portion 341 of the plurality of windings 34 are welded.
  • one end 341 of the plurality of windings 34 is indicated by a broken line.
  • the configuration of the first bus ring 51 is different from the configuration of the first bus ring 41 of the electric motor 1 according to the first to fourth embodiments.
  • the configurations of the second and third bus rings are the same as the configuration of the first bus ring 51.
  • the first bus ring 51 includes a conductive annular member 512 formed concentrically with the stator 3 (see FIG. 2), and a circumferential direction of the annular member 512. And a plurality of terminals 51a provided side by side.
  • FIG. 9A a part of the annular member 512 and one terminal 51a among the plurality of terminals 51a are shown.
  • Each of the plurality of terminals 51 a has a winding connection portion 511 having one end connected to the annular member 512 and the other end connected to one end 341 of the plurality of windings 34.
  • the terminal 51 a includes a winding connection portion 511, a crimping portion 513 crimped to the annular member 512, and first and second extending between the winding connection portion 511 and the crimping portion 513. It has the 2nd extension part 514,515.
  • the first extending portion 514 extends from the crimped portion 513 along the circumferential direction of the annular member 512.
  • the second extending portion 515 is directed from the end opposite to the caulking portion 513 in the extending direction of the first extending portion 514 toward the radial direction of the annular member 512 and the opposite side of the caulking portion 513. It is extended.
  • a winding connection portion 511 is provided at the distal end of the second extending portion 515 in the extending direction.
  • the saddle winding connection portion 511 is formed in an annular shape having an opening 511 a at one location opposite to the second extending portion 515 in the radial direction of the annular member 512.
  • the winding connection portion 511 includes a pair of extending portions 511b and 511c extending in the radial direction of the annular member 512 from the second extending portion 515 side, and a pair of extending portions 511b and 511c. And a distal end of the pair of extending portions 511b and 511c face each other through the opening 511a.
  • one end portions 341 of the plurality of windings 34 are collectively inserted into the winding connection portion 511 in the insertion step.
  • the winding connection portion 411 is sandwiched between the pair of electrodes 11 and 12 so that the opening width of the opening 511 a of the winding connection portion 511 is narrower than the thickness of the winding 34.
  • the pressure is applied in the direction of the arrow in FIG. 9B. In the present embodiment, pressure is applied so that a part of the ends of the pair of extending portions 511b and 511c is in contact.
  • a current is passed through the winding connection portion 511 by the pair of electrodes 11 and 12 while the winding connection portion 511 is pressurized, and the winding connection portion 511 and the plurality of windings One end 341 of 34 is welded and electrically connected.
  • the ends of the pair of extending portions 511b and 511c are melted and welded by energization by the pair of electrodes 11 and 12.
  • FIGS. 10A to 10C a method of connecting the winding connection portion and the ends of the plurality of windings in the electric motor 1 according to the sixth embodiment of the present invention will be described with reference to FIGS. 10A to 10C.
  • the following description will be given by taking as an example a connection method between the winding connection portion 611 of the first bus ring 61 and the end portions 341 of the plurality of windings 34. To do.
  • 10A to 10C show a connection process between the winding connection portion 611 of the first bus ring 61 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the sixth embodiment of the present invention.
  • 10A is a state in which one end 341 of the plurality of windings 34 is inserted through the winding connection part 611
  • FIG. 10B is a state in which the winding connection part 611 is pressurized
  • FIG. 10C is a state in which the winding connection portion 611 and one end portion 341 of the plurality of windings 34 are welded.
  • one end 341 of the plurality of windings 34 is indicated by a broken line.
  • the configuration of the terminal 61a of the first bus ring 61 is different from the configuration of the terminal 51a of the first bus ring 51 of the electric motor 1 according to the fifth embodiment.
  • the configuration of the terminals of the second and third bus rings is the same as the configuration of the terminal 61a of the first bus ring 61.
  • the terminal 61a includes a winding connection portion 611, a crimping portion 613 crimped to the annular member 612, and a winding connection portion along the circumferential direction of the annular member 612 from the crimping portion 613. It has the extension part 614 extended between 611 and the crimping part 613.
  • the saddle winding connection portion 611 is formed in an annular shape having an opening 611a at one place on the caulking portion 613 side in the radial direction of the annular member 612.
  • the winding connection portion 611 includes a pair of extending portions 611b and 611c extending in the radial direction of the annular member 612, and a connecting portion 611d that connects the pair of extending portions 611b and 611c on the side opposite to the opening 611a. have.
  • One extending portion 611b of the pair of extending portions 611b and 611c extends from the end opposite to the crimping portion 613 in the extending direction of the extending portion 614 toward the connecting portion 611d side, and the other extending portion The portion 611c extends from the end portion of the connecting portion 611d toward the caulking portion 613 side.
  • stretching direction is bent toward the one extending
  • one end portions 341 of the plurality of windings 34 are inserted into the winding connection portion 611 at a time in the insertion step.
  • the winding connection portion 611 is sandwiched between the pair of electrodes 11 and 12 so that the opening width of the opening 611 a of the winding connection portion 611 is narrower than the thickness of the winding 34.
  • the pressure is applied in the direction of the arrow in FIG. In the present embodiment, pressure is applied so that the tip of the other extending portion 611c is in contact with one extending portion 611b.
  • a current is passed through the winding connection portion 611 by the pair of electrodes 11 and 12 while the winding connection portion 611 is pressurized, and the winding connection portion 611 and the plurality of windings One end 341 of 34 is welded and electrically connected.
  • a stator (3) formed by winding a winding (32/34) around a plurality of magnetic cores (31) arranged in an annular shape, a rotor (2) rotating with respect to the stator (3), A bus ring (first to third bus rings 41 to 43) which is arranged concentrically with the stator (3) and has a winding connection part (411/511/611) to which the winding (32/34) is connected.
  • the line connecting portion (411/511/611) is formed in an annular shape having an opening (411a / 511a / 611a) at one location.
  • the opening width of the opening (411a / 511a / 611a) is wound ( The manufacturing method of the electric motor (1) which pressurizes the coil
  • the first to third bus rings (41 to 43) are formed by bending a conductive member, a plurality of arc portions (412) arranged along the circumferential direction of the stator (3), and a pair of adjacent ones. It has a pair of extending portions (413, 414) interposed between the arc portions (412a, 412b) and both ends sandwiching the opening (411a) of the winding connection portion (411), and a pair of extending portions ( 413, 414) is [1] or [2], in which the amount of change in the distance between the ends on the arc portion (412a, 412b) side in the pressurizing step is smaller than the amount of change in the opening width of the opening (411a).
  • a stator (3) formed by winding a winding (32/34) around a plurality of magnetic cores (31) arranged in an annular shape, a rotor (2) rotating with respect to the stator (3), A bus ring (first to third bus rings 41 to 43) which is arranged concentrically with the stator (3) and has a winding connection part (411/511/611) to which the winding (32/34) is connected.
  • the winding connection portion (411/511/611) is formed in an annular shape having an opening (411a / 511a / 611a) at one location, and the opening width of the opening (411a / 511a / 611a) is the winding (
  • the first to third bus rings (41 to 43) are formed by bending a conductive member, and include a plurality of arc portions (412) arranged along the circumferential direction of the stator (3) and a pair of adjacent ones. It has a pair of extending portions (413, 414) interposed between the arc portions (412a, 412b) and both ends sandwiching the opening (411a) of the winding connection portion (411), and a pair of extending portions ( 413, 414) is the electric motor (1) according to [5] or [6], in which the distance between the end portions on the arc portion (412a, 412b) side is larger than the opening width of the opening (411a).
  • the first to third bus rings (51/61) are formed of a conductive annular member (512/612) formed concentrically with the stator (3), and a circumference of the annular member (512/612). It has a plurality of terminals (51a / 61a) provided side by side along the direction, and one end of each of the plurality of terminals (51a / 61a) is connected to the annular member (512/612), and the other end is wound.
  • the electric motor (1) according to [5] or [6], which includes a connection portion (511/611).
  • the winding connection portion (411/511/611) is inserted in the end portions (341) of the plurality of windings (34), according to any one of [5] to [8]. Electric motor (1).
  • the present invention can be appropriately modified and implemented without departing from the spirit of the present invention.
  • the concentrated winding electric motor has been described.
  • the present invention is not limited to this, and the present invention can also be applied to a distributed winding electric motor.
  • terminal part 41a, 42a, 43a and terminal 51a, 61a protruded in the radial direction of the stator 3, it is not restricted to this,
  • the axial direction of the stator 3 (rotation axis of the shaft 21) It may protrude in a direction parallel to (O direction).
  • SYMBOLS 1 Electric motor 2 ... Rotor 3 ... Stator 31, 31U, 31V, 31W ... Magnetic-material core 32, 32U, 32V, 32W, 34 ... Winding

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

Provided is an electric motor manufacturing method in which connections with the ends of coils can be reliably performed and thereby work efficiency can be improved, and also provided is an electric motor. An electric motor (1) comprises: a stator (3) formed by winding coils (32) around a plurality of magnetic cores (31) disposed in a ring shape; a rotor (2) rotating with respect to the stator (3); and first to third bus rings (41-43) disposed concentrically with the stator (3) and having coil connection portions to which the coils (32) are connected. A manufacturing method for the electric motor (1) has: an insertion step of inserting the ends (321) of the coils (32) into the coil connection portions; a pressurization step of pressurizing the coil connection portions so that the coil connection portions and the ends (321) of the coils (32) make contact with each other; and a welding step of energizing the coil connection portions while the coil connection portions are being pressurized and welding the coil connection portions and the ends (321) of the coils (32). In the manufacturing method, the coil connection portions are each formed in a ring shape having one opening and pressurized in the pressurization step so that the width of the opening becomes narrower than the wire thickness of the coils (32).

Description

電動機の製造方法及び電動機Electric motor manufacturing method and electric motor
  本発明は、複数の磁性体コアに巻線を巻き回してなるステータと、ステータに対して回転するロータと、巻線が接続されるバスリングとを備えた電動機の製造方法及び電動機に関する。 The present invention relates to a method of manufacturing an electric motor and an electric motor including a stator formed by winding a winding around a plurality of magnetic cores, a rotor rotating with respect to the stator, and a bus ring to which the winding is connected.
  従来、例えばハイブリッド車等に搭載される電動機として、配電部品（バスリング）を介して巻線に駆動電流が供給されるものが知られている（例えば、特許文献１参照。）。 2. Description of the Related Art Conventionally, as an electric motor mounted on, for example, a hybrid vehicle or the like, a motor in which a drive current is supplied to a winding via a power distribution component (bus ring) is known (for example, see Patent Document 1).
  特許文献１に記載の電動機は、エンジンに固定される円環状のステータと、ステータに対して回転するロータと、ステータに設けられた複数のモータコイルがＵ相、Ｖ相、Ｗ相に対応するように結線する円環状の配電部品とを備えている。配電部品は、円弧状の複数の導電性パーツを円環状に配置して、これらの導電性パーツをモールド樹脂で連結したものである。 In the electric motor described in Patent Document 1, an annular stator fixed to the engine, a rotor rotating with respect to the stator, and a plurality of motor coils provided on the stator correspond to the U phase, the V phase, and the W phase. And an annular power distribution component connected in this manner. The power distribution component is formed by arranging a plurality of arc-shaped conductive parts in an annular shape and connecting these conductive parts with a mold resin.
  複数の導電性パーツは、絶縁体によって導体が被覆された絶縁電線からなり、その両端部にはステータの径方向内側に向けて突出するように屈曲させてなる屈曲部が形成されている。屈曲部では絶縁体から導体が露出しており、隣り合う導電性パーツの屈曲部によってモータコイルの巻線が接続される端子部が形成されている。この端子部を形成する一対の屈曲部の間に巻線の端部が挟持された状態で、例えば半田付けやヒュージング溶接によって端子部、すなわち配電部品に接続されている。 The plurality of conductive parts are made of an insulated wire whose conductor is covered with an insulator, and bent portions are formed at both ends thereof so as to protrude toward the radially inner side of the stator. The conductor is exposed from the insulator at the bent portion, and a terminal portion to which the winding of the motor coil is connected is formed by the bent portion of the adjacent conductive part. In a state where the end of the winding is sandwiched between a pair of bent portions forming the terminal portion, the terminal portion, that is, the power distribution component is connected by, for example, soldering or fusing welding.
特開２００４－９６８４１号公報JP 2004-96841 A
  特許文献１に記載の電動機では、巻線の端部と配電部品の端子部とを接続する際、巻線の端部が一対の屈曲部の間に挟まれているだけであるため、巻線の端部が一対の屈曲部の間から抜け出してしまうことによって接続不良の原因となる可能性があった。この場合には、接続作業のやり直しが必要となり、作業効率向上の妨げとなっていた。 In the electric motor described in Patent Document 1, when the end of the winding and the terminal of the power distribution component are connected, the end of the winding is only sandwiched between the pair of bent portions. There is a possibility that the end of each of the two parts is pulled out from between the pair of bent portions, thereby causing connection failure. In this case, it is necessary to redo the connection work, which hinders improvement in work efficiency.
  そこで、本発明は、巻線の端部との接続を確実に行うことができ、もって作業効率の向上を図ることが可能な電動機の製造方法及び電動機を提供することを目的とする。 Therefore, an object of the present invention is to provide a method of manufacturing an electric motor and an electric motor that can be reliably connected to an end of a winding and can improve work efficiency.
  本発明は、上記課題を解決することを目的として、環状に配置された複数の磁性体コアに巻線を巻き回してなるステータと、前記ステータに対して回転するロータと、前記ステータと同心状に配置され、前記巻線が接続される巻線接続部を有するバスリングとを備えた電動機の製造方法であって、前記巻線接続部に前記巻線の端部を挿通させる挿通工程と、前記巻線接続部と前記巻線の端部とが接触するように前記巻線接続部を加圧する加圧工程と、前記巻線接続部が加圧された状態で前記巻線接続部に通電し、前記巻線接続部と前記巻線の端部とを溶着する溶着工程とを有し、前記巻線接続部は、一箇所に開口を有する環状に形成され、前記加圧工程では、前記開口の開口幅が前記巻線の太さよりも狭くなるように前記巻線接続部を加圧する電動機の製造方法を提供する。 In order to solve the above-mentioned problems, the present invention provides a stator formed by winding a plurality of magnetic cores arranged in an annular shape, a rotor rotating with respect to the stator, and a concentric shape with the stator. Is a method of manufacturing an electric motor including a bus ring having a winding connection portion to which the winding is connected, and an insertion step of inserting an end portion of the winding into the winding connection portion; A pressurizing step of pressurizing the winding connection portion so that the winding connection portion and an end of the winding are in contact with each other, and energizing the winding connection portion in a state where the winding connection portion is pressurized And a welding step of welding the winding connection portion and the end portion of the winding, and the winding connection portion is formed in an annular shape having an opening at one place, Pressurize the winding connection so that the opening width of the opening is narrower than the thickness of the winding A method for manufacturing an electric motor is provided.
  また、本発明は、上記課題を解決することを目的として、環状に配置された複数の磁性体コアに巻線を巻き回してなるステータと、前記ステータに対して回転するロータと、前記ステータと同心状に配置され、前記巻線が接続される巻線接続部を有するバスリングとを備え、前記巻線接続部は、一箇所に開口を有する環状に形成され、前記開口の開口幅が前記巻線の太さよりも狭い状態で、前記巻線接続部と前記巻線の端部とが接続されている電動機を提供する。 In order to solve the above problems, the present invention provides a stator formed by winding a plurality of magnetic cores arranged in an annular shape, a rotor rotating with respect to the stator, and the stator. And a bus ring having a winding connection portion to which the winding is connected, the winding connection portion is formed in an annular shape having an opening at one place, and the opening width of the opening is the Provided is an electric motor in which the winding connecting portion and the end of the winding are connected in a state narrower than the thickness of the winding.
  本発明に係る電動機の製造方法及び電動機によれば、巻線の端部との接続を確実に行うことができ、もって作業効率の向上を図ることが可能である。 れ ば According to the method for manufacturing an electric motor and the electric motor according to the present invention, it is possible to reliably connect the ends of the windings, thereby improving work efficiency.
本発明の第１の実施の形態に係る電動機の構成例の概略について説明する模式図である。It is a schematic diagram explaining the outline of the structural example of the electric motor which concerns on the 1st Embodiment of this invention. 第１乃至第３のバスリングが組み付けられたステータをシャフトの回転軸方向から見た平面図である。It is the top view which looked at the stator with which the 1st thru | or 3rd bus ring was assembled | attached from the rotating shaft direction of the shaft. 磁性体コア組立体の構成例を示す斜視図である。It is a perspective view which shows the structural example of a magnetic body core assembly. 第１乃至第３のバスリングを示し、端子部及びその周辺部の拡大斜視図である。FIG. 5 is an enlarged perspective view of the terminal portion and its peripheral portion, showing the first to third bus rings. 第１のバスリングの巻線接続部とＵ相の巻線の一方の端部との接続過程の一部を示し、一方の巻線の端部が巻線接続部に挿通した状態を示す説明図である。An explanation showing a part of the connection process between the winding connection part of the first bus ring and one end part of the U-phase winding, and showing the state in which the end part of one winding is inserted into the winding connection part FIG. 第１のバスリングの巻線接続部とＵ相の巻線の一方の端部との接続過程の一部を示し、巻線接続部が加圧されている状態を示す説明図である。It is explanatory drawing which shows a part of connection process of the winding connection part of a 1st bus ring, and the one end part of the winding of a U phase, and shows the state where the winding connection part is pressurized. 第１のバスリングの巻線接続部とＵ相の巻線の一方の端部との接続過程の一部を示し、巻線接続部と一方の巻線の端部とが溶着している状態でを示す説明図である。A part of the connection process between the winding connection portion of the first bus ring and one end portion of the U-phase winding is shown, and the winding connection portion and the end portion of the one winding are welded. It is explanatory drawing which shows. 本発明の第２の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、複数の巻線の端部が巻線接続部に挿通した状態を示す説明図である。A part of connection process of the winding connection part of the 1st bus ring and the end of a plurality of U phase windings in the electric motor concerning a 2nd embodiment of the present invention is shown, and the end of a plurality of windings It is explanatory drawing which shows the state which the part inserted in the coil | winding connection part. 第２の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、巻線接続部が加圧されている状態を示す説明図である。A part of the connection process of the winding connection part of the 1st bus ring and the end part of a plurality of U phase windings in the electric motor concerning a 2nd embodiment is shown, and the winding connection part is pressurized. It is explanatory drawing which shows the state which exists. 第２の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、巻線接続部と複数の巻線の端部とが溶着している状態を示す説明図である。A part of connection process of the winding connection part of the 1st bus ring and the end of a plurality of U phase windings in the electric motor concerning a 2nd embodiment is shown, and a winding connection part and a plurality of windings It is explanatory drawing which shows the state which the edge part of is welded. 本発明の第３の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、複数の巻線の端部が巻線接続部に挿通した状態を示す説明図である。A part of connection process of the winding connection part of the 1st bus ring and the end of a plurality of U phase windings in an electric motor concerning a 3rd embodiment of the present invention is shown, and the end of a plurality of windings is shown. It is explanatory drawing which shows the state which the part inserted in the coil | winding connection part. 第３の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、巻線接続部が加圧されている状態を示す説明図である。A part of connection process of the winding connection part of the 1st bus ring and the end of a plurality of windings of U phase in the electric motor concerning a 3rd embodiment is shown, and the winding connection part is pressurized. It is explanatory drawing which shows the state which exists. 第３の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、巻線接続部と複数の巻線の端部とが溶着している状態を示す説明図である。The electric motor which concerns on 3rd Embodiment shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a several U-phase coil | winding, and shows a winding connection part and several windings It is explanatory drawing which shows the state which the edge part of is welded. 本発明の第４の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、複数の巻線の端部が巻線接続部に挿通した状態を示す説明図である。The electric motor which concerns on the 4th Embodiment of this invention shows a part of connection process of the winding connection part of the 1st bus ring, and the edge part of a some U-phase coil | winding, and shows the end of several windings It is explanatory drawing which shows the state which the part inserted in the coil | winding connection part. 第４の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、巻線接続部が加圧されている状態を示す説明図である。The electric motor which concerns on 4th Embodiment WHEREIN: The part of the connection process of the winding connection part of the 1st bus ring and the edge part of a some U-phase coil | winding is shown, and a winding connection part is pressurized. It is explanatory drawing which shows the state which exists. 第４の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、巻線接続部と複数の巻線の端部とが溶着している状態を示す説明図である。The electric motor which concerns on 4th Embodiment WHEREIN: A part of connection process of the winding connection part of a 1st bus ring and the edge part of a some U-phase coil | winding is shown, and a winding connection part and several windings are shown. It is explanatory drawing which shows the state which the edge part of is welded. 本発明の第５の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、複数の巻線の端部が巻線接続部に挿通した状態を示す説明図である。The electric motor which concerns on the 5th Embodiment of this invention shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a some U-phase coil | winding, and shows the end of several windings It is explanatory drawing which shows the state which the part inserted in the coil | winding connection part. 第５の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、巻線接続部が加圧されている状態を示す説明図である。The electric motor which concerns on 5th Embodiment shows a part of connection process of the winding connection part of the 1st bus ring, and the edge part of the some winding of U phase, and the winding connection part is pressurized. It is explanatory drawing which shows the state which exists. 第５の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、巻線接続部と複数の巻線の端部とが溶着している状態を示す説明図である。The electric motor which concerns on 5th Embodiment shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a several U-phase coil | winding, and shows a winding connection part and several windings It is explanatory drawing which shows the state which the edge part of is welded. 本発明の第６の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、複数の巻線の端部が巻線接続部に挿通した状態を示す説明図である。The electric motor which concerns on the 6th Embodiment of this invention shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a some U-phase coil | winding, and shows the end of several windings It is explanatory drawing which shows the state which the part inserted in the coil | winding connection part. 第６の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、巻線接続部が加圧されている状態を示す説明図である。The electric motor which concerns on 6th Embodiment shows a part of connection process of the winding connection part of the 1st bus ring, and the edge part of the some winding of U phase, and the winding connection part is pressurized. It is explanatory drawing which shows the state which exists. 第６の実施の形態に係る電動機における第１のバスリングの巻線接続部とＵ相の複数の巻線の端部との接続過程の一部を示し、巻線接続部と複数の巻線の端部とが溶着している状態を示す説明図である。The electric motor which concerns on 6th Embodiment shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a several U-phase coil | winding, and shows a winding connection part and several windings It is explanatory drawing which shows the state which the edge part of is welded.
［第１の実施の形態］
  本発明の第１の実施の形態に係る電動機について、図１乃至図５を参照して説明する。 [First Embodiment]
An electric motor according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 5.
（電動機１の構成）
  まず、電動機１の構成について、図１を参照して説明する。 (Configuration of electric motor 1)
First, the configuration of the electric motor 1 will be described with reference to FIG.
  図１は、本発明の第１の実施の形態に係る電動機１の構成例の概略について説明する模式図である。 FIG. 1 is a schematic diagram for explaining an outline of a configuration example of the electric motor 1 according to the first embodiment of the present invention.
  この電動機１は、固定子であるステータ３と、ステータ３に対して回転するロータ２と、巻線３２が接続される第１乃至第４のバスリング４１～４４とを備えている。巻線３２は、素線がエナメルで被覆されたエナメル線を用いることが可能である。 The electric motor 1 includes a stator 3 that is a stator, a rotor 2 that rotates with respect to the stator 3, and first to fourth bus rings 41 to 44 to which a winding 32 is connected. As the winding 32, an enameled wire in which a wire is covered with enamel can be used.
  ロータ２は、図略の軸受によってステータ３と同軸上で回転可能に支持されたシャフト２１と、シャフト２１の外周面に固定されてＮ極及びＳ極が周方向に交互に着磁された円筒状の磁石２２とを有している。 The rotor 2 includes a shaft 21 that is rotatably supported on the same axis as the stator 3 by a bearing (not shown), and a cylinder that is fixed to the outer peripheral surface of the shaft 21 and has N and S poles alternately magnetized in the circumferential direction. Shaped magnet 22.
  ステータ３は、シャフト２１の回転軸Ｏを中心として環状に配置された複数（本実施の形態では２４個）の磁性体コア３１に巻線３２を巻き回して構成される。本実施の形態では、２４個の磁性体コア３１は、８個のＵ相の磁性体コア３１Ｕ、８個のＶ相の磁性体コア３１Ｖ、及び８個のＷ相の磁性体コア３１から構成され、ロータ２の回転方向Ｒに沿って、Ｕ相の磁性体コア３１Ｕ、Ｖ相の磁性体コア３１Ｖ、Ｗ相の磁性体コア３１Ｗの順に並んで配置されている。 The stator 3 is configured by winding a winding 32 around a plurality (24 in the present embodiment) of magnetic cores 31 arranged in an annular shape around the rotation axis O of the shaft 21. In the present embodiment, the 24 magnetic cores 31 are composed of eight U-phase magnetic cores 31U, eight V-phase magnetic cores 31V, and eight W-phase magnetic cores 31. Along with the rotation direction R of the rotor 2, the U-phase magnetic core 31U, the V-phase magnetic core 31V, and the W-phase magnetic core 31W are arranged in this order.
  Ｕ相の磁性体コア３１Ｕには、巻線３２としてＵ相の巻線３２Ｕが巻き回されている。このＵ相の巻線３２Ｕは、その両端部のうち一方の端部３２１Ｕが第１のバスリング４１に電気的に接続され、他方の端部３２２Ｕが第４のバスリング４４に電気的に接続されている。 A U-phase winding 32 </ b> U is wound around the U-phase magnetic core 31 </ b> U as the winding 32. The U-phase winding 32 </ b> U has one end 321 </ b> U that is electrically connected to the first bus ring 41 and the other end 322 </ b> U that is electrically connected to the fourth bus ring 44. Has been.
  Ｖ相の磁性体コア３１Ｖには、巻線３２としてＶ相の巻線３２Ｖが巻き回されている。このＶ相の巻線３２Ｖは、その両端部のうち一方の端部３２１Ｖが第２のバスリング４２に電気的に接続され、他方の端部３２２Ｖが第４のバスリング４４に電気的に接続されている。 A V-phase winding 32 </ b> V is wound around the V-phase magnetic core 31 </ b> V as the winding 32. The V-phase winding 32 </ b> V has one end 321 </ b> V electrically connected to the second bus ring 42, and the other end 322 </ b> V electrically connected to the fourth bus ring 44. Has been.
  Ｗ相の磁性体コア３１Ｗには、巻線３２としてＷ相の巻線３２Ｗが巻き回されている。このＷ相の巻線３２Ｗは、その両端部のうち一方の端部３２１Ｗが第３のバスリング４３に電気的に接続され、他方の端部３２２Ｗが第４のバスリング４４に電気的に接続されている。 A W-phase winding 32 </ b> W is wound around the W-phase magnetic core 31 </ b> W as the winding 32. The W-phase winding 32 </ b> W has one end 321 </ b> W electrically connected to the third bus ring 43 and the other end 322 </ b> W electrically connected to the fourth bus ring 44. Has been.
  したがって、第４のバスリング４４は、Ｕ相の巻線３２Ｕの他方の端部３２２Ｕ、Ｖ相の巻線３２Ｖの他方の端部３２２Ｖ、及びＷ相の巻線３２Ｗの他方の端部３２２Ｗが電気的に接続された中性相のバスリングとして機能している。 Therefore, the fourth bus ring 44 includes the other end 322U of the U-phase winding 32U, the other end 322V of the V-phase winding 32V, and the other end 322W of the W-phase winding 32W. It functions as an electrically connected neutral phase bus ring.
  Ｕ相の巻線３２Ｕの一方の端部３２１Ｕは、ステータ３の周方向におけるＶ相の巻線３２Ｖ側に位置し、他方の端部３２２Ｕは、ステータ３の周方向におけるＷ相の巻線３２Ｗ側に位置している。Ｖ相の巻線３２Ｖの一方の端部３２１Ｖは、ステータ３の周方向におけるＷ相の巻線３２Ｗ側に位置し、他方の端部３２２Ｖは、ステータ３の周方向におけるＵ相の巻線３２Ｕ側に位置している。Ｗ相の巻線３２Ｗの一方の端部３２１Ｗは、ステータ３の周方向におけるＵ相の巻線３２Ｕ側に位置し、他方の端部３２２Ｗは、ステータ３の周方向におけるＶ相の巻線３２Ｖ側に位置している。 One end 321U of the U-phase winding 32U is located on the V-phase winding 32V side in the circumferential direction of the stator 3, and the other end 322U is a W-phase winding 32W in the circumferential direction of the stator 3. Located on the side. One end 321V of the V-phase winding 32V is located on the W-phase winding 32W side in the circumferential direction of the stator 3, and the other end 322V is a U-phase winding 32U in the circumferential direction of the stator 3. Located on the side. One end 321W of the W-phase winding 32W is located on the U-phase winding 32U side in the circumferential direction of the stator 3, and the other end 322W is a V-phase winding 32V in the circumferential direction of the stator 3. Located on the side.
  第１乃至第３のバスリング４１～４３には、それぞれ給電端子４１０，４２０，４３０が接続され、この給電端子４１０，４２０，４３０を介して図略のインバータから１２０°ずつ位相がずれた正弦波状の駆動電流が第１乃至第３のバスリング４１～４３に供給される。この駆動電流によってステータ３に回転磁界が形成され、磁石２２がこの回転磁界による吸引力及び反発力により回転力を受けてシャフト２１を回転軸Ｏを中心として回転させる。 The first to third bus rings 41 to 43 are connected to power supply terminals 410, 420, and 430, respectively, and the sine whose phase is shifted by 120 ° from the inverter (not shown) via the power supply terminals 410, 420, and 430. A wavy drive current is supplied to the first to third bus rings 41 to 43. A rotational magnetic field is formed in the stator 3 by this driving current, and the magnet 22 receives the rotational force by the attractive force and the repulsive force due to the rotational magnetic field and rotates the shaft 21 around the rotational axis O.
（ステータ３の構成）
  次に、ステータ３の構成について、図２及び図３を参照して説明する。 (Configuration of stator 3)
Next, the structure of the stator 3 is demonstrated with reference to FIG.2 and FIG.3.
  図２は、第１乃至第３のバスリング４１～４３が組み付けられたステータ３をシャフト２１の回転軸Ｏ方向から見た平面図である。図３は、磁性体コア組立体３０の構成例を示す斜視図である。 FIG. 2 is a plan view of the stator 3 assembled with the first to third bus rings 41 to 43 as viewed from the direction of the rotation axis O of the shaft 21. FIG. 3 is a perspective view illustrating a configuration example of the magnetic core assembly 30.
  ステータ３は、図２に示すように、磁性体コア３１に巻線３２を巻き回してなる複数（本実施の形態では２４個）の磁性体コア組立体３０が環状に配置されることにより構成されている。より具体的には、磁性体コア組立体３０は、図３に示すように、複数の電磁鋼板３１０を積層してなる磁性体コア３１に絶縁性のインシュレータ３３を装着し、インシュレータ３３を介して磁性体コア３１の外側に巻線３２を巻き回してなる。 As shown in FIG. 2, the stator 3 is configured by arranging a plurality (24 in this embodiment) of magnetic core assemblies 30 formed by winding a winding 32 around a magnetic core 31 in an annular shape. Has been. More specifically, as shown in FIG. 3, the magnetic core assembly 30 has an insulating insulator 33 mounted on a magnetic core 31 formed by laminating a plurality of electromagnetic steel plates 310, and the insulator 33 is interposed via the insulator 33. A winding 32 is wound around the outside of the magnetic core 31.
  インシュレータ３３は、磁性体コア３１と巻線３２との間に介在する絶縁部３３６（図３において破線で示す）と、絶縁部３３６をロータ２（図１参照）の径方向に挟んで対向する第１の壁部３３１及び第２の壁部３３２と、第１の壁部３３１からシャフト２１の回転軸Ｏ（図１参照）側に向かって張り出した内鍔部３３４と、第２の壁部３３２から第１の壁部３３１とは反対側に向かって張り出した外鍔部３３５と、外鍔部３３５の端部から第２の壁部３３２に対向するように立設された第３の壁部３３３とを一体に有している。 The insulator 33 is opposed to an insulating portion 336 (shown by a broken line in FIG. 3) interposed between the magnetic core 31 and the winding 32 with the insulating portion 336 sandwiched in the radial direction of the rotor 2 (see FIG. 1). A first wall portion 331 and a second wall portion 332; an inner flange portion 334 protruding from the first wall portion 331 toward the rotation axis O (see FIG. 1) of the shaft 21; and a second wall portion An outer flange 335 projecting from 332 toward the opposite side of the first wall 331, and a third wall erected so as to face the second wall 332 from the end of the outer flange 335 It has the part 333 integrally.
  第１乃至第３の壁部３３１～３３３は、シャフト２１の回転軸Ｏ側からロータ２の径方向に沿って第１の壁部３３１、第２の壁部３３２、第３の壁部３３３の順に立設されている。 The first to third wall portions 331 to 333 are formed on the first wall portion 331, the second wall portion 332, and the third wall portion 333 along the radial direction of the rotor 2 from the rotation axis O side of the shaft 21. They are erected in order.
  第２の壁部３３２には、巻線３２の一方の端部３２１を挿通させる第２の挿通部３３２ａが形成され、巻線３２の一方の端部３２１は、挿通部３３２ａからシャフト２１の回転軸Ｏ方向に平行な方向に沿って引き出されている。第１の壁部３３１には、巻線３２の他方の端部３２２を挿通させる第１の挿通部３３１ａが形成され、巻線３２の他方の端部３２２は、第１の挿通部３３１ａからシャフト２１の回転軸Ｏ側に向かって引き出されている。 The second wall portion 332 is formed with a second insertion portion 332a through which one end portion 321 of the winding 32 is inserted, and the one end portion 321 of the winding 32 is rotated from the insertion portion 332a to the shaft 21. It is pulled out along a direction parallel to the axis O direction. The first wall portion 331 is formed with a first insertion portion 331a through which the other end portion 322 of the winding 32 is inserted, and the other end portion 322 of the winding 32 is connected to the shaft from the first insertion portion 331a. 21 is drawn toward the rotation axis O side.
  また、インシュレータ３３は、第１乃至第３のバスリング４１～４３を保持する保持部３３０を有している。保持部３３０は、図３に示すように、第２の壁部３３２の一部、第３の壁部３３３、及び第２の壁部３３２の一部と第３の壁部３３３との間を連結する外鍔部３３５によって構成されている。外鍔部３３５は、保持部３３０の底部として機能する。本実施の形態では、保持部３３０は、巻線３２（Ｕ相の巻線３２Ｕ，Ｖ相の巻線３２Ｖ，Ｗ相の巻線３２Ｗ）の外周側に設けられている。第３の壁部３３３には、第１乃至第３のバスリング４１～４３を固定する固定部材４０が嵌合される嵌合凹部３３３ａが形成されている。 Further, the insulator 33 has a holding portion 330 that holds the first to third bus rings 41 to 43. As shown in FIG. 3, the holding unit 330 includes a part of the second wall part 332, a third wall part 333, and a part of the second wall part 332 and the third wall part 333. It is comprised by the outer collar part 335 to connect. The outer flange portion 335 functions as the bottom portion of the holding portion 330. In the present embodiment, holding section 330 is provided on the outer peripheral side of winding 32 (U-phase winding 32U, V-phase winding 32V, and W-phase winding 32W). The third wall portion 333 is formed with a fitting recess 333a into which the fixing member 40 for fixing the first to third bus rings 41 to 43 is fitted.
（第１乃至第３のバスリング４１～４３の構成）
  次に、第１乃至第３のバスリング４１～４３の構成について、図２及び図４を参照して説明する。 (Configuration of the first to third bus rings 41 to 43)
Next, the configuration of the first to third bus rings 41 to 43 will be described with reference to FIGS.
  図４は、第１乃至第３のバスリング４１～４３を示し、端子部４１ａ，４２ａ，４３ａ及びその周辺部の拡大斜視図である。 FIG. 4 shows the first to third bus rings 41 to 43, and is an enlarged perspective view of the terminal portions 41a, 42a, 43a and their peripheral portions.
  図２に示すように、第１乃至第３のバスリング４１～４３は、シャフト２１の回転軸Ｏ（図１参照）方向に沿って並んで配置され、複数（本実施の形態では２４個）の固定部材４０によって一括して固定された状態でステータ３の保持部３３０に保持されている。 As shown in FIG. 2, the first to third bus rings 41 to 43 are arranged side by side along the direction of the rotation axis O (see FIG. 1) of the shaft 21, and a plurality (24 in this embodiment) are arranged. Are held by the holding portion 330 of the stator 3 while being fixed together by the fixing member 40.
  第１乃至第３のバスリング４１～４３は、例えば銅等の良電導性の金属からなる中心導体４００ａを樹脂からなる絶縁体４００ｂで被覆した線状の導電部材を屈曲して形成されている。 The first to third bus rings 41 to 43 are formed by bending a linear conductive member in which a central conductor 400a made of a highly conductive metal such as copper is covered with an insulator 400b made of resin. .
  第１のバスリング４１は、ステータ３の径方向内側に突出し、Ｕ相の巻線３２Ｕの一方の端部３２１Ｕが接続される複数（本実施の形態では８個）の端子部４１ａと、ステータ３の周方向に沿って並ぶ複数（本実施の形態では８個）の円弧部４１２とを有している。複数の端子部４１ａは、複数の円弧部４１２の間に設けられている。また、第１のバスリング４１の両端部では、絶縁体４００ｂから中心導体４００ａが露出し、この露出した中心導体４００ａに給電端子４１０が圧着又は加締めにより接続されている。 The first bus ring 41 protrudes inward in the radial direction of the stator 3, and a plurality (eight in this embodiment) of terminal portions 41 a to which one end 321 U of the U-phase winding 32 U is connected, and the stator 3 (eight in the present embodiment) arcuate portions 412 arranged along the circumferential direction. The plurality of terminal portions 41 a are provided between the plurality of arc portions 412. Further, at both ends of the first bus ring 41, the central conductor 400a is exposed from the insulator 400b, and the power supply terminal 410 is connected to the exposed central conductor 400a by crimping or crimping.
  第１のバスリング４１と同様にして、第２のバスリング４２は、Ｖ相の巻線３２Ｖの一方の端部３２１Ｖが接続される複数（本実施の形態では８個）の端子部４２ａと、複数（本実施の形態では８個）の円弧部４２２とを有している。また、第２のバスリング４２の両端部には、給電端子４２０が接続されている。 Similarly to the first bus ring 41, the second bus ring 42 includes a plurality of (in this embodiment, eight) terminal portions 42a to which one end portion 321V of the V-phase winding 32V is connected. , And a plurality (eight in this embodiment) of arc portions 422. In addition, power supply terminals 420 are connected to both ends of the second bus ring 42.
  第１及び第２のバスリング４１，４２と同様にして、第３のバスリング４３は、Ｗ相の巻線３２Ｗの一方の端部３２１Ｗが接続される複数（本実施の形態では８個）の端子部４３ａと、複数（本実施の形態では８個）の円弧部４３２とを有している。また、第３のバスリング４３の両端部には、給電端子４３０が接続されている。 Similarly to the first and second bus rings 41 and 42, the third bus ring 43 includes a plurality of (eight in the present embodiment) to which one end 321W of the W-phase winding 32W is connected. Terminal portion 43a and a plurality (eight in this embodiment) of arc portions 432 are provided. In addition, power supply terminals 430 are connected to both ends of the third bus ring 43.
  第１乃至第３のバスリング４１～４３は、シャフト２１の回転軸Ｏ方向に沿って並べて配置したときに、第１のバスリング４１の端子部４１ａがＵ相の巻線３２Ｕの一方の端部３２１Ｕの引き出し位置に、第２のバスリング４２の端子部４２ａがＶ相の巻線３２Ｖの一方の端部３２１Ｖの引き出し位置に、第３のバスリング４３の端子部４３ａがＷ相の巻線３２Ｗの一方の端部３２１Ｗの引き出し位置に、それぞれ対応するようにステータ３の周方向に沿って等間隔に配置されている。 When the first to third bus rings 41 to 43 are arranged side by side along the direction of the rotation axis O of the shaft 21, the terminal portion 41a of the first bus ring 41 has one end of the U-phase winding 32U. The terminal portion 42a of the second bus ring 42 is at the pulling position of one end 321V of the V-phase winding 32V, and the terminal portion 43a of the third bus ring 43 is W-phase winding. It arrange | positions at equal intervals along the circumferential direction of the stator 3 so as to correspond to the drawing position of one end 321W of the line 32W.
  Ｕ相の巻線３２Ｕ、Ｖ相の巻線３２Ｖ、及びＷ相の巻線３２Ｗの一方の端部３２１Ｕ，３２１Ｖ，３２１Ｗは、ステータ３側からシャフト２１の回転軸Ｏに平行な方向に沿って第１乃至第３のバスリング４１～４３の端子部４１ａ，４２ａ，４３ａにそれぞれ挿通されている。なお、図４では、一方の端部３２１Ｕ，３２１Ｖ，３２１ＷのうちＶ相の巻線３２Ｖの一方の端部３２１Ｖが端子部４２ａに挿通されている様子を示す。 One end portions 321U, 321V, and 321W of the U-phase winding 32U, the V-phase winding 32V, and the W-phase winding 32W extend along a direction parallel to the rotation axis O of the shaft 21 from the stator 3 side. The first to third bus rings 41 to 43 are inserted into the terminal portions 41a, 42a and 43a, respectively. FIG. 4 shows a state where one end 321V of the V-phase winding 32V among the one end 321U, 321V, 321W is inserted into the terminal portion 42a.
（巻線接続部と巻線の端部との接続方法）
  次に、第１乃至第３のバスリング４１～４３における端子部４１ａ，４２ａ，４３ａの巻線接続部４１１，４２１，４３１とＵ相の巻線３２Ｕ，Ｖ相の巻線３２Ｖ，Ｗ相の巻線３２Ｗの一方の端部３２１Ｕ，３２１Ｖ，３２１Ｗとの接続方法について、図５Ａ～図５Ｃを参照して説明する。 (Connection method between winding connection and winding end)
Next, the winding connection portions 411, 421, 431 of the terminal portions 41a, 42a, 43a in the first to third bus rings 41-43, the U-phase winding 32U, the V-phase winding 32V, and the W-phase winding A connection method with one end 321U, 321V, 321W of the winding 32W will be described with reference to FIGS. 5A to 5C.
  なお、第１乃至第３のバスリング４１～４３における端子部４１ａ，４２ａ，４３ａの巻線接続部４１１，４２１，４３１とＵ相の巻線３２Ｕ，Ｖ相の巻線３２Ｖ，Ｗ相の巻線３２Ｗの一方の端部３２１Ｕ，３２１Ｖ，３２１Ｗとの接続方法は全て同一であるため、第１のバスリング４１における端子部４１ａの巻線接続部４１１とＵ相の巻線３２Ｕの一方の端部３２１Ｕとの接続方法を例にとって、以下説明する。 It should be noted that the terminal portions 41a, 42a, 43a of the first to third bus rings 41-43, the winding connection portions 411, 421, 431, the U-phase winding 32U, the V-phase winding 32V, and the W-phase winding. Since all the connection methods of the one end portions 321U, 321V, and 321W of the line 32W are the same, the winding connection portion 411 of the terminal portion 41a in the first bus ring 41 and one end of the U-phase winding 32U. The connection method with the unit 321U will be described below as an example.
  図５Ａ～図５Ｃは、第１のバスリング４１の巻線接続部４１１とＵ相の巻線３２Ｕの一方の端部３２１Ｕとの接続過程を示す説明図であり、図５Ａは、Ｕ相の巻線３２Ｕの一方の端部３２１Ｕが巻線接続部４１１に挿通した状態、図５Ｂは、巻線接続部４１１が加圧されている状態、図５Ｃは、巻線接続部４１１とＵ相の巻線３２Ｕの一方の端部３２１Ｕとが溶着している状態である。なお、図５Ｃでは、Ｕ相の巻線３２Ｕの一方の端部３２１Ｕを破線で示している。 FIGS. 5A to 5C are explanatory views showing a connection process between the winding connection portion 411 of the first bus ring 41 and one end portion 321U of the U-phase winding 32U, and FIG. The state where one end 321U of the winding 32U is inserted through the winding connection 411, FIG. 5B shows the state where the winding connection 411 is pressurized, and FIG. 5C shows the U-phase of the winding connection 411. In this state, one end 321U of the winding 32U is welded. In FIG. 5C, one end 321U of the U-phase winding 32U is indicated by a broken line.
  図５Ａに示すように、端子部４１ａは、一箇所に開口４１１ａを有する環状に形成された巻線接続部４１１と、隣り合う一対の円弧部４１２ａ，４１２ｂと開口４１１ａを挟む巻線接続部４１１の両端部４１１ｂ，４１１ｃとの間に介在する一対の延在部４１３，４１４とを有している。 As shown in FIG. 5A, the terminal portion 41a includes a winding connection portion 411 formed in an annular shape having an opening 411a at one place, and a winding connection portion 411 sandwiching the pair of adjacent arc portions 412a and 412b and the opening 411a. A pair of extending portions 413 and 414 interposed between the two end portions 411b and 411c.
  本実施の形態では、一対の延在部４１３，４１４は、隣り合う一対の円弧部４１２ａ，４１２ｂのそれぞれの端部からステータ３（図２参照）の径方向内側に向かって平行に延在している。 In the present embodiment, the pair of extending portions 413 and 414 extend in parallel from the respective end portions of the pair of adjacent arc portions 412a and 412b toward the radially inner side of the stator 3 (see FIG. 2). ing.
  図５Ａに示すように、一対の延在部４１３，４１４の延在方向の長さＬ1は、円弧部４１２ａ，４１２ｂから巻線接続部４１１における第１のバスリング４１の径方向の先端までの距離Ｌ2の１０分の１～１０分の９程度である。なお、一対の延在部４１３，４１４の延在方向の長さＬ1は、円弧部４１２ａ，４１２ｂから巻線接続部４１１における第１のバスリング４１の径方向の先端までの距離Ｌ2の５分の１～５分の３程度であるとより望ましい。 As shown in FIG. 5A, the length L 1 in the extending direction of the pair of extending portions 413 and 414 is from the arc portions 412a and 412b to the distal end in the radial direction of the first bus ring 41 in the winding connecting portion 411. The distance L 2 is about 1/10 to 9/10. The length L 1 in the extending direction of the pair of extending portions 413, 414 is the distance L 2 from the arc portions 412 a, 412 b to the radial tip of the first bus ring 41 in the winding connection portion 411. It is more desirable to be about 1/5 to 3/5.
  端子部４１ａの巻線接続部４１１とＵ相の巻線３２Ｕの一方の端部３２１Ｕとの接続方法は、巻線接続部４１１にＵ相の巻線３２Ｕの一方の端部３２１Ｕを挿通させる挿通工程（図５Ａ参照）と、巻線接続部４１１とＵ相の巻線３２Ｕの一方の端部３２１Ｕとが接触するように巻線接続部４１１を加圧する加圧工程（図５Ｂ参照）と、巻線接続部４１１に通電して巻線接続部４１１とＵ相の巻線３２Ｕの一方の端部３２１Ｕとを溶着する溶着工程（図５Ｃ参照）とを有する。 The connection method between the winding connection portion 411 of the terminal portion 41a and the one end portion 321U of the U-phase winding 32U is to insert the one end portion 321U of the U-phase winding 32U into the winding connection portion 411. A step (see FIG. 5A), a pressurizing step (see FIG. 5B) for pressurizing the winding connection portion 411 so that the winding connection portion 411 and one end 321U of the U-phase winding 32U are in contact with each other; A welding step (see FIG. 5C) in which the winding connection portion 411 is energized to weld the winding connection portion 411 and one end portion 321U of the U-phase winding 32U.
  図５Ｂに示すように、加圧工程では、巻線接続部４１１の開口４１１ａの開口幅ｄがＵ相の巻線３２Ｕの太さよりも狭くなるように、一対の電極１１，１２で巻線接続部４１１を挟んで図５Ｂの矢印の方向に向かって加圧する。 As shown in FIG. 5B, in the pressurizing step, the winding connection between the pair of electrodes 11 and 12 is performed so that the opening width d of the opening 411a of the winding connection portion 411 is narrower than the thickness of the U-phase winding 32U. Pressure is applied in the direction of the arrow in FIG.
  ここで、「巻線の太さ」とは、巻線の端部の断面において、最も狭い幅方向の寸法を指している。例えば、断面が円形状の巻線（丸状の巻線）であれば、その外径が太さとなり、断面が矩形状の巻線（平角状の巻線）であれば、その短辺の長さが太さとなる。 「Here,“ the thickness of the winding ”refers to the narrowest dimension in the width direction in the cross section of the end of the winding. For example, if the cross section is a circular winding (round winding), the outer diameter is thick, and if the cross section is a rectangular winding (flat winding), the short side Length becomes thickness.
  本実施の形態では、図５Ｂ及び図５Ｃに示すように、開口４１１ａの開口幅ｄと一対の延在部４１３，４１４の対向面４１３ａ，４１４ａ間の距離とが等しく形成されている。したがって、加圧工程によって、一対の延在部４１３，４１４の対向面４１３ａ，４１４ａ間の距離は、Ｕ相の巻線３２Ｕの太さ寸法よりも短い距離まで近づく。 In this embodiment, as shown in FIGS. 5B and 5C, the opening width d of the opening 411a and the distance between the opposing surfaces 413a and 414a of the pair of extending portions 413 and 414 are formed to be equal. Therefore, the distance between the opposing surfaces 413a and 414a of the pair of extending portions 413 and 414 approaches the distance shorter than the thickness dimension of the U-phase winding 32U by the pressurizing step.
  図５Ｃに示すように、溶着工程では、巻線接続部４１１が加圧された状態で一対の電極１１，１２により巻線接続部４１１に電流を流し、巻線接続部４１１とＵ相の巻線３２Ｕの一方の端部３２１Ｕとを溶着させて電気的に接続させる。この溶着工程では、例えばヒュージングによる溶接が用いられる。 As shown in FIG. 5C, in the welding process, a current is passed through the winding connection portion 411 through the pair of electrodes 11 and 12 while the winding connection portion 411 is pressurized, and the winding connection portion 411 and the U-phase winding are wound. The one end 321U of the wire 32U is welded and electrically connected. In this welding process, for example, welding by fusing is used.
  以上より、電動機１は、巻線接続部４１１の開口４１１ａの開口幅ｄがＵ相の巻線３２Ｕの太さよりも狭い状態で、巻線接続部４１１とＵ相の巻線３２Ｕの端部３２１Ｕとが電気的に接続されている。 As described above, in the electric motor 1, the end 321 </ b> U of the winding connection portion 411 and the U-phase winding 32 </ b> U in a state where the opening width d of the opening 411 a of the winding connection portion 411 is narrower than the thickness of the U-phase winding 32 </ b> U. And are electrically connected.
（第１の実施の形態の作用及び効果）
  以上説明した第１の実施の形態によれば、以下のような作用及び効果が得られる。 (Operation and effect of the first embodiment)
According to the first embodiment described above, the following operations and effects can be obtained.
  加圧工程において、巻線接続部４１１の開口４１１ａの開口幅ｄがＵ相の巻線３２Ｕの太さよりも狭くなるように巻線接続部４１１を加圧するため、溶着工程の際にＵ相の巻線３２Ｕが開口４１１ａを介して巻線接続部４１１から抜け出すことがなく、巻線接続部４１１とＵ相の巻線３２Ｕの一方の端部３２１Ｕとの接続を確実に行うことができ、作業効率の向上につながる。 In the pressurizing step, the winding connecting portion 411 is pressed so that the opening width d of the opening 411a of the winding connecting portion 411 is narrower than the thickness of the U-phase winding 32U. The winding 32U does not come out of the winding connection part 411 through the opening 411a, and the connection between the winding connection part 411 and one end 321U of the U-phase winding 32U can be reliably performed. It leads to improvement of efficiency.
［第２の実施の形態］
  次に、本発明の第２の実施の形態に係る電動機１における巻線接続部と複数の巻線の端部との接続方法について、図６Ａ～図６Ｃを参照して説明する。なお、第１の実施の形態と同様に、第１のバスリング４１の巻線接続部４１１と複数の巻線３４の端部３４１との接続方法を例にとって、以下説明することとする。 [Second Embodiment]
Next, a method of connecting the winding connection portion and the ends of the plurality of windings in the electric motor 1 according to the second embodiment of the present invention will be described with reference to FIGS. 6A to 6C. Similar to the first embodiment, the following description will be made by taking as an example a method of connecting the winding connection portion 411 of the first bus ring 41 and the end portions 341 of the plurality of windings 34.
  図６Ａ～図６Ｃにおいて、第１の実施の形態について説明したものと実質的に同一の機能を有する構成要素については、共通する符号を付してその重複した説明を省略する。 6A to 6C, components having substantially the same functions as those described in the first embodiment are denoted by common reference numerals, and redundant description thereof is omitted.
  図６Ａ～図６Ｃは、本発明の第２の実施の形態に係る電動機１における第１のバスリング４１の巻線接続部４１１と複数の巻線３４の一方の端部３４１との接続過程を示す説明図であり、図６Ａは、複数の巻線３４の一方の端部３４１が巻線接続部４１１に挿通した状態、図６Ｂは、巻線接続部４１１が加圧されている状態、図６Ｃは、巻線接続部４１１と複数の巻線３４の一方の端部３４１とが溶着している状態である。なお、図６Ｃでは、複数の巻線３４の一方の端部３４１を破線で示している。 6A to 6C show a connection process between the winding connection portion 411 of the first bus ring 41 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the second embodiment of the present invention. 6A is a state in which one end 341 of the plurality of windings 34 is inserted into the winding connection part 411, FIG. 6B is a state in which the winding connection part 411 is pressurized, and FIG. 6C is a state in which the winding connection portion 411 and one end portion 341 of the plurality of windings 34 are welded. In FIG. 6C, one end 341 of the plurality of windings 34 is indicated by a broken line.
  本実施の形態に係る電動機１は、第１の実施の形態に係る電動機１と異なり、複数（本実施の形態では１５本）の巻線３４が束となって磁性体コア３１（図１及び図３参照）に巻き回されている。 The electric motor 1 according to the present embodiment is different from the electric motor 1 according to the first embodiment, and a plurality of (15 in the present embodiment) windings 34 are bundled to form a magnetic core 31 (FIG. 1 and FIG. 1). (See FIG. 3).
  複数の巻線３４は、断面が円形状の巻線（丸状の巻線）であり、それぞれの太さは第１の実施の形態における巻線３２よりも細い。第１のバスリング４１の巻線接続部４１１には、複数の巻線３４の一方の端部３４１が挿通されている。なお、第２及び第３のバスリング４２，４３についても同様である。 The plurality of windings 34 are windings having a circular cross section (round windings), each of which is thinner than the winding 32 in the first embodiment. One end portion 341 of the plurality of windings 34 is inserted into the winding connection portion 411 of the first bus ring 41. The same applies to the second and third bus rings 42 and 43.
  図６Ａに示すように、挿通工程では、巻線接続部４１１に複数の巻線３４の一方の端部３４１を一括して挿通させる。加圧工程では、第１の実施の形態における加圧工程と異なり、図６Ｂに示すように、巻線接続部４１１の開口４１１ａを閉じるように一対の電極１１，１２で巻線接続部４１１を挟んで図６Ｂの矢印の方向に向かって加圧する。すなわち、加圧工程により、一対の延在部４１３，４１４の対向面４１３ａ，４１４ａが接触する。なお、これに限らず、第１の実施の形態と同様に、開口４１１ａの開口幅が巻線３４の太さよりも狭くなっていればよい。 As shown in FIG. 6A, in the insertion step, one end portions 341 of the plurality of windings 34 are collectively inserted into the winding connection portion 411. In the pressurization step, unlike the pressurization step in the first embodiment, as shown in FIG. 6B, the winding connection portion 411 is formed by a pair of electrodes 11 and 12 so as to close the opening 411a of the winding connection portion 411. The pressure is applied in the direction of the arrow in FIG. 6B. That is, the opposing surfaces 413a and 414a of the pair of extending portions 413 and 414 come into contact with each other by the pressurizing process. However, the present invention is not limited to this, and the opening width of the opening 411a may be narrower than the thickness of the winding 34, as in the first embodiment.
  溶着工程では、巻線接続部４１１が加圧された状態で一対の電極１１，１２により巻線接続部４１１に電流を流し、巻線接続部４１１と複数の巻線３４の一方の端部３４１とを溶着させて電気的に接続させる。したがって、本実施の形態に係る電動機１は、巻線接続部４１１の開口４１１ａが閉じられた状態で、巻線接続部４１１と複数の巻線３４の端部３４１とが電気的に接続されている。 In the welding process, a current is passed through the winding connection portion 411 by the pair of electrodes 11 and 12 in a state where the winding connection portion 411 is pressurized, and one end portion 341 of the winding connection portion 411 and the plurality of windings 34. Are electrically connected. Therefore, in the electric motor 1 according to the present embodiment, the winding connection portion 411 and the end portions 341 of the plurality of windings 34 are electrically connected in a state where the opening 411a of the winding connection portion 411 is closed. Yes.
（第２の実施の形態の作用及び効果）
  以上説明した第２の実施の形態によれば、第１の実施の形態の作用及び効果と同様の作用及び効果が得られると共に、以下の（１）及び（２）の作用及び効果が得られる。 (Operation and effect of the second embodiment)
According to the second embodiment described above, the same operations and effects as the operations and effects of the first embodiment can be obtained, and the following operations and effects (1) and (2) can be obtained. .
（１）複数の巻線３４は、それぞれの太さが第１の実施の形態における巻線３２の太さよりも細いので、加圧工程において巻線接続部４１１を加圧した際、巻線３４が開口４１１ａから抜け出し易くなるが、開口４１１ａは巻線接続部４１１が加圧された際に巻線３４の太さよりも狭くなるので、巻線３４が巻線接続部４１１から抜け出してしまうことを抑制することができる。 (1) Since the thickness of each of the plurality of windings 34 is smaller than the thickness of the winding 32 in the first embodiment, when the winding connection portion 411 is pressed in the pressurizing step, the winding 34 However, the opening 411a becomes narrower than the thickness of the winding 34 when the winding connecting portion 411 is pressurized, so that the winding 34 is pulled out from the winding connecting portion 411. Can be suppressed.
（２）溶着工程では、巻線接続部４１１の開口４１１ａが閉じられた状態で巻線接続部４１１に通電されることにより、巻線接続部４１１がその全周に亘って均一に発熱し、巻線接続部４１１と複数の巻線３４の端部３４１との溶着における偏りが低減されるため、複数の巻線３４がちぎれることなく安定的に巻線接続部４１１と接続できる。 (2) In the welding process, the winding connection portion 411 is heated uniformly over the entire circumference by energizing the winding connection portion 411 with the opening 411a of the winding connection portion 411 closed. Since unevenness in welding between the winding connection portion 411 and the end portions 341 of the plurality of windings 34 is reduced, the plurality of windings 34 can be stably connected to the winding connection portion 411 without breaking.
［第３の実施の形態］
  次に、本発明の第３の実施の形態に係る電動機１における巻線接続部と複数の巻線の端部との接続方法について、図７Ａ～図７Ｃを参照して説明する。なお、第１及び第２の実施の形態と同様に、第１のバスリング４１の巻線接続部４１１と複数の巻線３４の端部３４１との接続方法を例にとって、以下説明することとする。 [Third Embodiment]
Next, a method for connecting the winding connecting portion and the ends of the plurality of windings in the electric motor 1 according to the third embodiment of the present invention will be described with reference to FIGS. 7A to 7C. As in the first and second embodiments, the method for connecting the winding connection portion 411 of the first bus ring 41 and the end portions 341 of the plurality of windings 34 will be described below as an example. To do.
  図７Ａ～図７Ｃにおいて、第１及び第２の実施の形態について説明したものと実質的に同一の機能を有する構成要素については、共通する符号を付してその重複した説明を省略する。 7A to 7C, components having substantially the same functions as those described in the first and second embodiments are denoted by common reference numerals, and redundant description thereof is omitted.
  図７Ａ～図７Ｃは、本発明の第３の実施の形態に係る電動機１における第１のバスリング４１の巻線接続部４１１と複数の巻線３４の一方の端部３４１との接続過程を示す説明図であり、図７Ａは、複数の巻線３４の一方の端部３４１が巻線接続部４１１に挿通した状態、図７Ｂは、巻線接続部４１１が加圧されている状態、図７Ｃは、巻線接続部４１１と複数の巻線３４の一方の端部３４１とが溶着している状態である。なお、図７Ｃでは、複数の巻線３４の一方の端部３４１を破線で示している。 7A to 7C show a connection process between the winding connection portion 411 of the first bus ring 41 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the third embodiment of the present invention. 7A is a state in which one end 341 of the plurality of windings 34 is inserted into the winding connection part 411, FIG. 7B is a state in which the winding connection part 411 is pressurized, and FIG. 7C is a state in which the winding connection portion 411 and one end portion 341 of the plurality of windings 34 are welded. In FIG. 7C, one end 341 of the plurality of windings 34 is indicated by a broken line.
  本実施の形態に係る電動機１は、図７Ｂ及び図７Ｃに示すように、端子部４１ａの一対の延在部４１３，４１４は、円弧部４１２ａ，４１２ｂ側の端部間の距離Ｄ2が開口４１１ａの開口幅ｄ2よりも大きい状態で、巻線接続部４１１と複数の巻線３４の端部３４１とが電気的に接続されている。なお、開口４１１ａの開口幅ｄ2は、第１の実施の形態と同様に、巻線３４の太さよりも狭くなっている。 In the electric motor 1 according to the present embodiment, as shown in FIGS. 7B and 7C, the pair of extending portions 413 and 414 of the terminal portion 41 a has an opening D 2 between the ends on the arc portions 412 a and 412 b side. The winding connection portion 411 and the end portions 341 of the plurality of windings 34 are electrically connected in a state larger than the opening width d 2 of 411a. The opening width d 2 of the opening 411a, as in the first embodiment is smaller than the thickness of the winding 34.
  より具体的には、一対の延在部４１３，４１４は、第２の実施の形態における一対の延在部４１３，４１４と異なり、加圧工程における円弧部４１２ａ，４１２ｂ側の端部間の距離の変化量（Ｄ1－Ｄ2）が開口４１１ａの開口幅の変化量（ｄ1－ｄ2）よりも小さい。 More specifically, unlike the pair of extending portions 413 and 414 in the second embodiment, the pair of extending portions 413 and 414 is a distance between the end portions on the arc portions 412a and 412b side in the pressurizing step. Change amount (D 1 -D 2 ) is smaller than the change amount (d 1 -d 2 ) of the opening width of the opening 411a.
  本実施の形態では、図７Ａに示すように、加圧工程に入る前における一対の延在部４１３，４１４の円弧部４１２ａ，４１２ｂ側の端部間の距離Ｄ1と開口４１１ａの開口幅ｄ1とは等しい。 In this embodiment, as shown in FIG. 7A, the circular arc portion 412a of the pair of extending portions 413 and 414 before entering the pressing step, the opening width of the distance D 1 and the opening 411a between the ends of 412b side d Equal to 1 .
  また、本実施の形態では、加圧前における一対の延在部４１３，４１４の円弧部４１２ａ，４１２ｂ側の端部間の距離Ｄ1と加圧後における一対の延在部４１３，４１４の円弧部４１２ａ，４１２ｂ側の端部間の距離Ｄ2とは等しい。したがって、加圧工程における一対の延在部４１３，４１４の円弧部４１２ａ，４１２ｂ側の端部間の距離の変化量（Ｄ1－Ｄ2）はゼロである。 In the present embodiment, the distance D 1 between the ends of the arc portions 412a and 412b of the pair of extending portions 413 and 414 before pressing and the arc of the pair of extending portions 413 and 414 after pressing. parts 412a, equal to the distance D 2 between the ends of 412b side. Therefore, the amount of change (D 1 -D 2 ) in the distance between the ends of the pair of extending portions 413, 414 on the arc portions 412a, 412b side is zero.
  ここで、一対の延在部４１３，４１４における円弧部４１２ａ，４１２ｂ側の端部間の距離とは、具体的には、一対の延在部４１３，４１４の円弧部４１２ａ，４１２ｂ側の端部における対向面４１３ａ，４１４ａ間の距離を示す。したがって、一対の延在部４１３，４１４は、その対向面４１３ａ，４１４ａが円弧部４１２ａ，４１２ｂ側よりも開口４１１ａ側において接近している。 Here, the distance between the ends on the arc portions 412a and 412b side of the pair of extending portions 413 and 414 is specifically the end portions on the arc portions 412a and 412b side of the pair of extending portions 413 and 414. The distance between the opposing surfaces 413a and 414a is shown. Therefore, the opposing surfaces 413a and 414a of the pair of extending portions 413 and 414 are closer to the opening 411a side than the arc portions 412a and 412b side.
（第３の実施の形態の作用及び効果）
  以上説明した第３の実施の形態によれば、第１の実施の形態の作用及び効果、ならびに第２の実施の形態の（１）の作用及び効果と同様の作用及び効果が得られる。 (Operation and effect of the third embodiment)
According to the third embodiment described above, the same operations and effects as the operations and effects of the first embodiment and (1) of the second embodiment can be obtained.
  また、一対の延在部４１３，４１４は、加圧工程における円弧部４１２ａ，４１２ｂ側の端部間の距離の変化量が開口４１１ａの開口幅の変化量よりも小さいため、第１のバスリング４１における径方向の寸法を変えることなく巻線接続部４１１と巻線３４の端部３４１との接続を行うことができる。 Further, the pair of extending portions 413 and 414 has the first bus ring because the change amount of the distance between the end portions on the arc portions 412a and 412b side in the pressurizing process is smaller than the change amount of the opening width of the opening 411a. The winding connection portion 411 and the end portion 341 of the winding 34 can be connected without changing the radial dimension at 41.
［第４の実施の形態］
  次に、本発明の第４の実施の形態に係る電動機１における巻線接続部と複数の巻線の端部との接続方法について、図８Ａ～図８Ｃを参照して説明する。なお、第１乃至第３の実施の形態と同様に、第１のバスリング４１の巻線接続部４１１と複数の巻線３４の端部３４１との接続方法を例にとって、以下説明することとする。 [Fourth Embodiment]
Next, a method of connecting the winding connection portion and the ends of the plurality of windings in the electric motor 1 according to the fourth embodiment of the present invention will be described with reference to FIGS. 8A to 8C. As in the first to third embodiments, the connection method between the winding connection portion 411 of the first bus ring 41 and the end portions 341 of the plurality of windings 34 will be described below as an example. To do.
  図８Ａ～図８Ｃにおいて、第１乃至第３の実施の形態について説明したものと実質的に同一の機能を有する構成要素については、共通する符号を付してその重複した説明を省略する。 8A to 8C, components having substantially the same functions as those described in the first to third embodiments are denoted by common reference numerals, and redundant description thereof is omitted.
  図８Ａ～図８Ｃは、本発明の第４の実施の形態に係る電動機１における第１のバスリング４１の巻線接続部４１１と複数の巻線３４の一方の端部３４１との接続過程を示す説明図であり、図８Ａは、複数の巻線３４の一方の端部３４１が巻線接続部４１１に挿通した状態、図８Ｂは、巻線接続部４１１が加圧されている状態、図８Ｃは、巻線接続部４１１と複数の巻線３４の一方の端部３４１とが溶着している状態である。なお、図８Ｃでは、複数の巻線３４の一方の端部３４１を破線で示している。 8A to 8C show the connection process between the winding connection portion 411 of the first bus ring 41 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the fourth embodiment of the present invention. 8A is a state in which one end 341 of the plurality of windings 34 is inserted into the winding connection part 411, FIG. 8B is a state in which the winding connection part 411 is pressurized, and FIG. 8C is a state in which the winding connection portion 411 and one end portion 341 of the plurality of windings 34 are welded. In FIG. 8C, one end 341 of the plurality of windings 34 is indicated by a broken line.
  本実施の形態に係る電動機１は、図８Ｂ及び図８Ｃに示すように、巻線接続部４１１の開口４１１ａが閉じられた状態で、巻線接続部４１１と複数の巻線３４の端部３４１とが電気的に接続されている。 As shown in FIGS. 8B and 8C, the electric motor 1 according to the present embodiment has the winding connection portion 411 and the end portions 341 of the plurality of windings 34 in a state where the opening 411a of the winding connection portion 411 is closed. And are electrically connected.
  第３の実施の形態と同様に、一対の延在部４１３，４１４は、加圧工程における円弧部４１２ａ，４１２ｂ側の端部間の距離の変化量（Ｄ1－Ｄ2）が開口４１１ａの開口幅の変化量（ｄ1－０＝ｄ1）よりも小さい。 Similarly to the third embodiment, the pair of extending portions 413 and 414 has a change amount (D 1 -D 2 ) of the distance between the end portions on the arc portions 412a and 412b side in the pressurizing step of the opening 411a. It is smaller than the change amount of the opening width (d 1 −0 = d 1 ).
  本実施の形態では、加圧前における一対の延在部４１３，４１４の円弧部４１２ａ，４１２ｂ側の端部間の距離Ｄ1と加圧後における一対の延在部４１３，４１４の円弧部４１２ａ，４１２ｂ側の端部間の距離Ｄ2とが等しいため、加圧工程における一対の延在部４１３，４１４の円弧部４１２ａ，４１２ｂ側の端部間の距離の変化量（Ｄ1－Ｄ2）はゼロであり、開口４１１ａの開口幅の変化量ｄ1よりも小さいことが分かる。 In this embodiment, the arc portion 412a of the pair of extending portions 413 and 414 of the pressurization, the arc portion 412a of the pair of extending portions 413 and 414 at a distance D 1 and after pressing between the ends of 412b side , 412b side distance D 2 is equal to the distance D 2 between the ends of the pair of extending portions 413, 414 on the arc portions 412a, 412b side in the pressurizing step (D 1 -D 2 ) Is zero, and it can be seen that it is smaller than the change amount d 1 of the opening width of the opening 411a.
（第４の実施の形態の作用及び効果）
  以上説明した第３の実施の形態によれば、第１乃至第３の実施の形態の作用及び効果と同様の作用及び効果が得られる。 (Operation and effect of the fourth embodiment)
According to the third embodiment described above, the same operations and effects as those of the first to third embodiments can be obtained.
［第５の実施の形態］
  次に、本発明の第５の実施の形態に係る電動機１における巻線接続部と複数の巻線の端部との接続方法について、図９Ａ～図９Ｃを参照して説明する。なお、第１乃至第４の実施の形態と同様に、第１のバスリング５１の巻線接続部５１１と複数の巻線３４の端部３４１との接続方法を例にとって、以下説明することとする。 [Fifth Embodiment]
Next, a method of connecting the winding connection portion and the ends of the plurality of windings in the electric motor 1 according to the fifth embodiment of the present invention will be described with reference to FIGS. 9A to 9C. As in the first to fourth embodiments, the connection method between the winding connection portion 511 of the first bus ring 51 and the end portions 341 of the plurality of windings 34 will be described below as an example. To do.
  図９Ａ～図９Ｃにおいて、第１乃至第４の実施の形態について説明したものと実質的に同一の機能を有する構成要素については、共通する符号を付してその重複した説明を省略する。 9A to 9C, components having substantially the same functions as those described in the first to fourth embodiments are denoted by common reference numerals, and redundant description thereof is omitted.
  図９Ａ～図９Ｃは、本発明の第５の実施の形態に係る電動機１における第１のバスリング５１の巻線接続部５１１と複数の巻線３４の一方の端部３４１との接続過程を示す説明図であり、図９Ａは、複数の巻線３４の一方の端部３４１が巻線接続部５１１に挿通した状態、図９Ｂは、巻線接続部５１１が加圧されている状態、図９Ｃは、巻線接続部５１１と複数の巻線３４の一方の端部３４１とが溶着している状態である。なお、図９Ｃでは、複数の巻線３４の一方の端部３４１を破線で示している。 9A to 9C show a connection process between the winding connection portion 511 of the first bus ring 51 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the fifth embodiment of the present invention. 9A is a state in which one end 341 of the plurality of windings 34 is inserted into the winding connection part 511, FIG. 9B is a state in which the winding connection part 511 is pressurized, and FIG. 9C is a state in which the winding connection portion 511 and one end portion 341 of the plurality of windings 34 are welded. In FIG. 9C, one end 341 of the plurality of windings 34 is indicated by a broken line.
  本実施の形態に係る電動機１は、第１のバスリング５１の構成が、第１乃至第４の実施の形態に係る電動機１の第１のバスリング４１の構成と異なっている。なお、第２及び第３のバスリングの構成についても、第１のバスリング５１の構成と同様である。 In the electric motor 1 according to the present embodiment, the configuration of the first bus ring 51 is different from the configuration of the first bus ring 41 of the electric motor 1 according to the first to fourth embodiments. The configurations of the second and third bus rings are the same as the configuration of the first bus ring 51.
  より具体的には、図９Ａに示すように、第１のバスリング５１は、ステータ３（図２参照）と同心状に形成された導電性の環状部材５１２と、環状部材５１２の周方向に沿って並んで設けられた複数の端子５１ａとを有している。なお、図９Ａでは、環状部材５１２の一部及び複数の端子５１ａのうち１つの端子５１ａを示す。 More specifically, as shown in FIG. 9A, the first bus ring 51 includes a conductive annular member 512 formed concentrically with the stator 3 (see FIG. 2), and a circumferential direction of the annular member 512. And a plurality of terminals 51a provided side by side. In FIG. 9A, a part of the annular member 512 and one terminal 51a among the plurality of terminals 51a are shown.
  複数の端子５１ａはそれぞれ、その一端部が環状部材５１２に接続され、他端に複数の巻線３４の一方の端部３４１が接続される巻線接続部５１１を有している。具体的には、端子５１ａは、巻線接続部５１１と、環状部材５１２に加締め付けられた加締め部５１３と、巻線接続部５１１と加締め部５１３との間に延在する第１及び第２の延在部５１４，５１５とを有している。 Each of the plurality of terminals 51 a has a winding connection portion 511 having one end connected to the annular member 512 and the other end connected to one end 341 of the plurality of windings 34. Specifically, the terminal 51 a includes a winding connection portion 511, a crimping portion 513 crimped to the annular member 512, and first and second extending between the winding connection portion 511 and the crimping portion 513. It has the 2nd extension part 514,515.
  第１の延在部５１４は、加締め部５１３から環状部材５１２の周方向に沿って延在している。第２の延在部５１５は、第１の延在部５１４の延在方向における加締め部５１３とは反対側の端部から環状部材５１２の径方向かつ加締め部５１３とは反対側に向かって延在している。そして、第２の延在部５１５の延在方向の先端に巻線接続部５１１が設けられている。 The first extending portion 514 extends from the crimped portion 513 along the circumferential direction of the annular member 512. The second extending portion 515 is directed from the end opposite to the caulking portion 513 in the extending direction of the first extending portion 514 toward the radial direction of the annular member 512 and the opposite side of the caulking portion 513. It is extended. A winding connection portion 511 is provided at the distal end of the second extending portion 515 in the extending direction.
  巻線接続部５１１は、環状部材５１２の径方向において第２の延在部５１５とは反対側の一箇所に開口５１１ａを有する環状に形成されている。具体的には、巻線接続部５１１は、第２の延在部５１５側から環状部材５１２の径方向に延びる一対の延伸部５１１ｂ，５１１ｃと、一対の延伸部５１１ｂ，５１１ｃを第２の延在部５１５側で連結する連結部５１１ｄとを有し、一対の延伸部５１１ｂ，５１１ｃの先端は、開口５１１ａを介して向かい合っている。 The saddle winding connection portion 511 is formed in an annular shape having an opening 511 a at one location opposite to the second extending portion 515 in the radial direction of the annular member 512. Specifically, the winding connection portion 511 includes a pair of extending portions 511b and 511c extending in the radial direction of the annular member 512 from the second extending portion 515 side, and a pair of extending portions 511b and 511c. And a distal end of the pair of extending portions 511b and 511c face each other through the opening 511a.
  図９Ａに示すように、まず挿通工程にて複数の巻線３４の一方の端部３４１を一括して巻線接続部５１１に挿通させる。図９Ｂに示すように、加圧工程では、巻線接続部５１１の開口５１１ａの開口幅が巻線３４の太さよりも狭くなるように、一対の電極１１，１２で巻線接続部４１１を挟んで図９Ｂの矢印の方向に向かって加圧する。なお、本実施の形態では、一対の延伸部５１１ｂ，５１１ｃの先端の一部が接触するように加圧している。 As shown in FIG. 9A, first, one end portions 341 of the plurality of windings 34 are collectively inserted into the winding connection portion 511 in the insertion step. As shown in FIG. 9B, in the pressurizing step, the winding connection portion 411 is sandwiched between the pair of electrodes 11 and 12 so that the opening width of the opening 511 a of the winding connection portion 511 is narrower than the thickness of the winding 34. The pressure is applied in the direction of the arrow in FIG. 9B. In the present embodiment, pressure is applied so that a part of the ends of the pair of extending portions 511b and 511c is in contact.
  図９Ｃに示すように、溶着工程では、巻線接続部５１１が加圧された状態で一対の電極１１，１２により巻線接続部５１１に電流を流し、巻線接続部５１１と複数の巻線３４の一方の端部３４１とを溶着させて電気的に接続させる。なお、本実施の形態では、一対の電極１１，１２による通電によって一対の延伸部５１１ｂ，５１１ｃの先端が溶け合って溶着する。 As shown in FIG. 9C, in the welding process, a current is passed through the winding connection portion 511 by the pair of electrodes 11 and 12 while the winding connection portion 511 is pressurized, and the winding connection portion 511 and the plurality of windings One end 341 of 34 is welded and electrically connected. In the present embodiment, the ends of the pair of extending portions 511b and 511c are melted and welded by energization by the pair of electrodes 11 and 12.
（第５の実施の形態の作用及び効果）
  以上説明した第５の実施の形態によれば、第１及び第２の実施の形態の作用及び効果と同様の作用及び効果が得られる。 (Operation and effect of the fifth embodiment)
According to the fifth embodiment described above, operations and effects similar to those of the first and second embodiments can be obtained.
［第６の実施の形態］
  次に、本発明の第６の実施の形態に係る電動機１における巻線接続部と複数の巻線の端部との接続方法について、図１０Ａ～図１０Ｃを参照して説明する。なお、第１乃至第５の実施の形態と同様に、第１のバスリング６１の巻線接続部６１１と複数の巻線３４の端部３４１との接続方法を例にとって、以下説明することとする。 [Sixth Embodiment]
Next, a method of connecting the winding connection portion and the ends of the plurality of windings in the electric motor 1 according to the sixth embodiment of the present invention will be described with reference to FIGS. 10A to 10C. As in the first to fifth embodiments, the following description will be given by taking as an example a connection method between the winding connection portion 611 of the first bus ring 61 and the end portions 341 of the plurality of windings 34. To do.
  図１０Ａ～図１０Ｃにおいて、第１乃至第５の実施の形態について説明したものと実質的に同一の機能を有する構成要素については、共通する符号を付してその重複した説明を省略する。 10A to 10C, components having substantially the same functions as those described in the first to fifth embodiments are denoted by common reference numerals, and redundant description thereof is omitted.
  図１０Ａ～図１０Ｃは、本発明の第６の実施の形態に係る電動機１における第１のバスリング６１の巻線接続部６１１と複数の巻線３４の一方の端部３４１との接続過程を示す説明図であり、図１０Ａは、複数の巻線３４の一方の端部３４１が巻線接続部６１１に挿通した状態、図１０Ｂは、巻線接続部６１１が加圧されている状態、図１０Ｃは、巻線接続部６１１と複数の巻線３４の一方の端部３４１とが溶着している状態である。なお、図１０Ｃでは、複数の巻線３４の一方の端部３４１を破線で示している。 10A to 10C show a connection process between the winding connection portion 611 of the first bus ring 61 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the sixth embodiment of the present invention. 10A is a state in which one end 341 of the plurality of windings 34 is inserted through the winding connection part 611, FIG. 10B is a state in which the winding connection part 611 is pressurized, and FIG. 10C is a state in which the winding connection portion 611 and one end portion 341 of the plurality of windings 34 are welded. In FIG. 10C, one end 341 of the plurality of windings 34 is indicated by a broken line.
  本実施の形態に係る電動機１は、第１のバスリング６１の端子６１ａの構成が、第５の実施の形態に係る電動機１の第１のバスリング５１の端子５１ａの構成と異なっている。なお、第２及び第３のバスリングの端子の構成についても、第１のバスリング６１の端子６１ａの構成と同様である。 In the electric motor 1 according to the present embodiment, the configuration of the terminal 61a of the first bus ring 61 is different from the configuration of the terminal 51a of the first bus ring 51 of the electric motor 1 according to the fifth embodiment. The configuration of the terminals of the second and third bus rings is the same as the configuration of the terminal 61a of the first bus ring 61.
  図１０Ａに示すように、端子６１ａは、巻線接続部６１１と、環状部材６１２に加締め付けられた加締め部６１３と、加締め部６１３から環状部材６１２の周方向に沿って巻線接続部６１１と加締め部６１３との間に延在する延在部６１４とを有している。 As shown in FIG. 10A, the terminal 61a includes a winding connection portion 611, a crimping portion 613 crimped to the annular member 612, and a winding connection portion along the circumferential direction of the annular member 612 from the crimping portion 613. It has the extension part 614 extended between 611 and the crimping part 613. FIG.
  巻線接続部６１１は、環状部材６１２の径方向において加締め部６１３側の一箇所に開口６１１ａを有する環状に形成されている。具体的には、巻線接続部６１１は、環状部材６１２の径方向に延びる一対の延伸部６１１ｂ，６１１ｃと、開口６１１ａとは反対側において一対の延伸部６１１ｂ，６１１ｃを連結する連結部６１１ｄとを有している。 The saddle winding connection portion 611 is formed in an annular shape having an opening 611a at one place on the caulking portion 613 side in the radial direction of the annular member 612. Specifically, the winding connection portion 611 includes a pair of extending portions 611b and 611c extending in the radial direction of the annular member 612, and a connecting portion 611d that connects the pair of extending portions 611b and 611c on the side opposite to the opening 611a. have.
  一対の延伸部６１１ｂ，６１１ｃのうち一方の延伸部６１１ｂは、延在部６１４の延在方向における加締め部６１３とは反対側の端部から連結部６１１ｄ側に向かって延伸し、他方の延伸部６１１ｃは、連結部６１１ｄの端部から加締め部６１３側に向かって延伸している。 One extending portion 611b of the pair of extending portions 611b and 611c extends from the end opposite to the crimping portion 613 in the extending direction of the extending portion 614 toward the connecting portion 611d side, and the other extending portion The portion 611c extends from the end portion of the connecting portion 611d toward the caulking portion 613 side.
  また、他方の延伸部６１１ｃは、延伸方向における先端部が一方の延伸部６１１ｂ側に向かって屈曲している。したがって、一方の延伸部６１１ｂと他方の延伸部６１１ｄの当該先端部とは、開口６１１ａを介して向かい合っている。 Moreover, as for the other extending | stretching part 611c, the front-end | tip part in the extending | stretching direction is bent toward the one extending | stretching part 611b side. Therefore, the one extending portion 611b and the distal end portion of the other extending portion 611d face each other through the opening 611a.
  第５の実施の形態と同様にして、図１０Ａに示すように、まず挿通工程にて複数の巻線３４の一方の端部３４１を一括して巻線接続部６１１に挿通させる。図１０Ｂに示すように、加圧工程では、巻線接続部６１１の開口６１１ａの開口幅が巻線３４の太さよりも狭くなるように、一対の電極１１，１２で巻線接続部６１１を挟んで図１０Ｂの矢印の方向に向かって加圧する。なお、本実施の形態では、他方の延伸部６１１ｃの先端部が一方の延伸部６１１ｂに接触するように加圧している。 同 様 As in the fifth embodiment, as shown in FIG. 10A, first, one end portions 341 of the plurality of windings 34 are inserted into the winding connection portion 611 at a time in the insertion step. As shown in FIG. 10B, in the pressurizing step, the winding connection portion 611 is sandwiched between the pair of electrodes 11 and 12 so that the opening width of the opening 611 a of the winding connection portion 611 is narrower than the thickness of the winding 34. The pressure is applied in the direction of the arrow in FIG. In the present embodiment, pressure is applied so that the tip of the other extending portion 611c is in contact with one extending portion 611b.
  図１０Ｃに示すように、溶着工程では、巻線接続部６１１が加圧された状態で一対の電極１１，１２により巻線接続部６１１に電流を流し、巻線接続部６１１と複数の巻線３４の一方の端部３４１とを溶着させて電気的に接続させる。 As shown in FIG. 10C, in the welding process, a current is passed through the winding connection portion 611 by the pair of electrodes 11 and 12 while the winding connection portion 611 is pressurized, and the winding connection portion 611 and the plurality of windings One end 341 of 34 is welded and electrically connected.
（第６の実施の形態の作用及び効果）
  以上説明した第６の実施の形態によれば、第１及び第２の実施の形態の作用及び効果と同様の作用及び効果が得られる。 (Operation and effect of the sixth embodiment)
According to the sixth embodiment described above, the same operations and effects as those of the first and second embodiments can be obtained.
（実施の形態のまとめ）
  次に、以上説明した実施の形態から把握される技術思想について、実施の形態における符号等を援用して記載する。ただし、以下の記載における各符号等は、特許請求の範囲における構成要素を実施の形態に具体的に示した部材等に限定するものではない。 (Summary of embodiment)
Next, the technical idea grasped from the embodiment described above will be described with reference to the reference numerals in the embodiment. However, the reference numerals and the like in the following description are not intended to limit the constituent elements in the claims to the members and the like specifically shown in the embodiments.
［１］環状に配置された複数の磁性体コア（３１）に巻線（３２／３４）を巻き回してなるステータ（３）と、ステータ（３）に対して回転するロータ（２）と、ステータ（３）と同心状に配置され、巻線（３２／３４）が接続される巻線接続部（４１１／５１１／６１１）を有するバスリング（第１乃至第３のバスリング４１～４３）とを備えた電動機（１）の製造方法であって、巻線接続部（４１１／５１１／６１１）に巻線（３２／３４）の端部（３２１／３４１）を挿通させる挿通工程と、巻線接続部（４１１／５１１／６１１）と巻線（３２／３４）の端部（３２１／３４１）とが接触するように巻線接続部（４１１／５１１／６１１）を加圧する加圧工程と、巻線接続部（４１１／５１１／６１１）が加圧された状態で巻線接続部（４１１／５１１／６１１）に通電し、巻線接続部（４１１／５１１／６１１）と巻線（３２／３４）の端部（３２１／３４１）とを溶着する溶着工程とを有し、巻線接続部（４１１／５１１／６１１）は、一箇所に開口（４１１ａ／５１１ａ／６１１ａ）を有する環状に形成され、加圧工程では、開口（４１１ａ／５１１ａ／６１１ａ）の開口幅が巻線（３２／３４）の太さよりも狭くなるように巻線接続部（４１１／５１１／６１１）を加圧する電動機（１）の製造方法。 [1] A stator (3) formed by winding a winding (32/34) around a plurality of magnetic cores (31) arranged in an annular shape, a rotor (2) rotating with respect to the stator (3), A bus ring (first to third bus rings 41 to 43) which is arranged concentrically with the stator (3) and has a winding connection part (411/511/611) to which the winding (32/34) is connected. A step of inserting the end portion (321/341) of the winding (32/34) into the winding connection portion (411/511/611), and a winding method. A pressurizing step of pressurizing the winding connection (411/511/611) so that the wire connection (411/511/611) and the end (321/341) of the winding (32/34) are in contact with each other; , Winding connection in the state where the winding connection part (411/511/611) is pressurized (411/511/611) and a welding step of welding the winding connection part (411/511/611) and the end part (321/341) of the winding (32/34). The line connecting portion (411/511/611) is formed in an annular shape having an opening (411a / 511a / 611a) at one location. In the pressurizing step, the opening width of the opening (411a / 511a / 611a) is wound ( The manufacturing method of the electric motor (1) which pressurizes the coil | winding connection part (411/511/611) so that it may become narrower than the thickness of 32/34).
［２］加圧工程では、開口（４１１ａ／５１１ａ／６１１ａ）を閉じるように巻線接続部（４１１／５１１／６１１）を加圧する、［１］に記載の電動機（１）の製造方法。 [2] The method for manufacturing the electric motor (1) according to [1], wherein in the pressurizing step, the winding connection part (411/511/611) is pressurized so as to close the opening (411a / 511a / 611a).
［３］第１乃至第３のバスリング（４１～４３）は、導電部材を屈曲してなり、ステータ（３）の周方向に沿って並ぶ複数の円弧部（４１２）、及び隣り合う一対の円弧部（４１２ａ，４１２ｂ）と巻線接続部（４１１）の開口（４１１ａ）を挟む両端部との間に介在する一対の延在部（４１３，４１４）を有し、一対の延在部（４１３，４１４）は、加圧工程における円弧部（４１２ａ，４１２ｂ）側の端部間の距離の変化量が開口（４１１ａ）の開口幅の変化量よりも小さい、［１］又は［２］に記載の電動機（１）の製造方法。 [3] The first to third bus rings (41 to 43) are formed by bending a conductive member, a plurality of arc portions (412) arranged along the circumferential direction of the stator (3), and a pair of adjacent ones. It has a pair of extending portions (413, 414) interposed between the arc portions (412a, 412b) and both ends sandwiching the opening (411a) of the winding connection portion (411), and a pair of extending portions ( 413, 414) is [1] or [2], in which the amount of change in the distance between the ends on the arc portion (412a, 412b) side in the pressurizing step is smaller than the amount of change in the opening width of the opening (411a). The manufacturing method of the electric motor (1) of description.
［４］挿通工程では、巻線接続部（４１１）に複数の巻線（３４）の端部（３４１）を挿通させる、［１］乃至［３］の何れか１項に記載の電動機（１）の製造方法。 [4] In the inserting step, the electric motor (1) according to any one of [1] to [3], wherein the end portions (341) of the plurality of windings (34) are inserted through the winding connection portion (411). ) Manufacturing method.
［５］環状に配置された複数の磁性体コア（３１）に巻線（３２／３４）を巻き回してなるステータ（３）と、ステータ（３）に対して回転するロータ（２）と、ステータ（３）と同心状に配置され、巻線（３２／３４）が接続される巻線接続部（４１１／５１１／６１１）を有するバスリング（第１乃至第３のバスリング４１～４３）とを備え、巻線接続部（４１１／５１１／６１１）は、一箇所に開口（４１１ａ／５１１ａ／６１１ａ）を有する環状に形成され、開口（４１１ａ／５１１ａ／６１１ａ）の開口幅が巻線（３２／３４）の太さよりも狭い状態で、巻線接続部（４１１／５１１／６１１）と巻線（３２／３４）の端部（３２１／３４１）とが接続されている電動機（１）。 [5] A stator (3) formed by winding a winding (32/34) around a plurality of magnetic cores (31) arranged in an annular shape, a rotor (2) rotating with respect to the stator (3), A bus ring (first to third bus rings 41 to 43) which is arranged concentrically with the stator (3) and has a winding connection part (411/511/611) to which the winding (32/34) is connected. The winding connection portion (411/511/611) is formed in an annular shape having an opening (411a / 511a / 611a) at one location, and the opening width of the opening (411a / 511a / 611a) is the winding ( The motor (1) in which the winding connection (411/511/611) and the end (321/341) of the winding (32/34) are connected in a state narrower than the thickness of 32/34).
［６］巻線接続部（４１１／５１１／６１１）の開口（４１１ａ／５１１ａ／６１１ａ）が閉じられた状態で、巻線接続部（４１１／５１１／６１１）と巻線（３２／３４）の端部（３２１／３４１）とが接続されている［５］に記載の電動機（１）。 [6] With the opening (411a / 511a / 611a) of the winding connection part (411/511/611) closed, the winding connection part (411/511/611) and the winding (32/34) The electric motor (1) according to [5], to which an end (321/341) is connected.
［７］第１乃至第３のバスリング（４１～４３）は、導電部材を屈曲してなり、ステータ（３）の周方向に沿って並ぶ複数の円弧部（４１２）、及び隣り合う一対の円弧部（４１２ａ，４１２ｂ）と巻線接続部（４１１）の開口（４１１ａ）を挟む両端部との間に介在する一対の延在部（４１３，４１４）を有し、一対の延在部（４１３，４１４）は、円弧部（４１２ａ，４１２ｂ）側の端部間の距離が開口（４１１ａ）の開口幅よりも大きい、［５］又は［６］に記載の電動機（１）。 [7] The first to third bus rings (41 to 43) are formed by bending a conductive member, and include a plurality of arc portions (412) arranged along the circumferential direction of the stator (3) and a pair of adjacent ones. It has a pair of extending portions (413, 414) interposed between the arc portions (412a, 412b) and both ends sandwiching the opening (411a) of the winding connection portion (411), and a pair of extending portions ( 413, 414) is the electric motor (1) according to [5] or [6], in which the distance between the end portions on the arc portion (412a, 412b) side is larger than the opening width of the opening (411a).
［８］第１乃至第３のバスリング（５１／６１）は、ステータ（３）と同心状に形成された導電性の環状部材（５１２／６１２）、及び環状部材（５１２／６１２）の周方向に沿って並んで設けられた複数の端子（５１ａ／６１ａ）を有し、複数の端子（５１ａ／６１ａ）は、その一端が環状部材（５１２／６１２）に接続され、他端に巻線接続部（５１１／６１１）を有している、［５］又は［６］に記載の電動機（１）。 [8] The first to third bus rings (51/61) are formed of a conductive annular member (512/612) formed concentrically with the stator (3), and a circumference of the annular member (512/612). It has a plurality of terminals (51a / 61a) provided side by side along the direction, and one end of each of the plurality of terminals (51a / 61a) is connected to the annular member (512/612), and the other end is wound. The electric motor (1) according to [5] or [6], which includes a connection portion (511/611).
［９］巻線接続部（４１１／５１１／６１１）には、複数の巻線（３４）の端部（３４１）が挿通されている、［５］乃至［８］の何れか１項に記載の電動機（１）。 [9] The winding connection portion (411/511/611) is inserted in the end portions (341) of the plurality of windings (34), according to any one of [5] to [8]. Electric motor (1).
  以上、本発明の実施の形態を説明したが、上記に記載した実施の形態は特許請求の範囲に係る発明を限定するものではない。また、実施の形態の中で説明した特徴の組合せの全てが発明の課題を解決するための手段に必須であるとは限らない点に留意すべきである。 As mentioned above, although embodiment of this invention was described, embodiment described above does not limit the invention which concerns on a claim. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention.
  本発明は、その趣旨を逸脱しない範囲で適宜変形して実施することが可能である。例えば、上記実施の形態では、集中巻の電動機について説明したが、これに限らず、分布巻の電動機についても適用することが可能である。 The present invention can be appropriately modified and implemented without departing from the spirit of the present invention. For example, in the above embodiment, the concentrated winding electric motor has been described. However, the present invention is not limited to this, and the present invention can also be applied to a distributed winding electric motor.
  また、上記実施の形態では、複数の磁性体コア３１が環状に配置されているものを用いて説明したが、これに限らず、複数の磁性体コア３１が一体となった環状体を用いることも可能である。 Moreover, in the said embodiment, although demonstrated using what the some magnetic body core 31 is arrange | positioned cyclically | annularly, it uses not only this but the annular body which the some magnetic body core 31 integrated. Is also possible.
  また、上記実施の形態では、第１の実施の形態において、平角状の１本の巻線が巻線接続部４１１に挿通される場合について説明し、第２乃至第６の実施の形態において、丸状の１５本の巻線が一括して巻線接続部４１１，５１１，６１１に挿通される場合について説明したが、巻線の本数やその形状に特に制限はなく、用途に応じて適宜変更することが可能である。 In the above-described embodiment, a case where one flat rectangular winding is inserted through the winding connection portion 411 in the first embodiment will be described. In the second to sixth embodiments, Although the case where 15 round windings are collectively inserted into the winding connecting portions 411, 511, and 611 has been described, there is no particular limitation on the number of windings and the shape thereof, and they are appropriately changed according to the application. Is possible.
  また、上記実施の形態では、端子部４１ａ，４２ａ，４３ａ及び端子５１ａ，６１ａは、ステータ３の径方向に突出していたが、これに限らず、例えばステータ３の軸方向（シャフト２１の回転軸Ｏ方向）に平行な方向に突出していてもよい。 Moreover, in the said embodiment, although terminal part 41a, 42a, 43a and terminal 51a, 61a protruded in the radial direction of the stator 3, it is not restricted to this, For example, the axial direction of the stator 3 (rotation axis of the shaft 21) It may protrude in a direction parallel to (O direction).
１…電動機
２…ロータ
３…ステータ
３１，３１Ｕ，３１Ｖ，３１Ｗ…磁性体コア
３２，３２Ｕ，３２Ｖ，３２Ｗ，３４…巻線
４１～４４…第１乃至第４のバスリング
５１，６１…第１のバスリング
３２１，３２１Ｕ，３２１Ｖ，３２１Ｗ，３４１…一方の端部
４１１，４２１，４３１，５１１，６１１…巻線接続部
４１１ａ，５１１ａ，６１１ａ…開口
４１１ｂ，４１１ｃ…両端部
４１２，４１２ａ，４１２ｂ，４２２，４３２…円弧部
４１３，４１４…延在部
５１２，６１２…環状部材 DESCRIPTION OF SYMBOLS 1 ... Electric motor 2 ... Rotor 3 ... Stator 31, 31U, 31V, 31W ... Magnetic- material core 32, 32U, 32V, 32W, 34 ... Winding | winding 41-44 ... 1st thru | or 4th bus rings 51, 61 ... 1st Bus rings 321, 321 U, 321 V, 321 W, 341... One end 411, 421, 431, 511, 611. 422, 432 ... arc portions 413, 414 ... extending portions 512, 612 ... annular members

Claims (9)

  1.   環状に配置された複数の磁性体コアに巻線を巻き回してなるステータと、前記ステータに対して回転するロータと、前記ステータと同心状に配置され、前記巻線が接続される巻線接続部を有するバスリングとを備えた電動機の製造方法であって、
      前記巻線接続部に前記巻線の端部を挿通させる挿通工程と、
      前記巻線接続部と前記巻線の端部とが接触するように前記巻線接続部を加圧する加圧工程と、
      前記巻線接続部が加圧された状態で前記巻線接続部に通電し、前記巻線接続部と前記巻線の端部とを溶着する溶着工程とを有し、
      前記巻線接続部は、一箇所に開口を有する環状に形成され、
      前記加圧工程では、前記開口の開口幅が前記巻線の太さよりも狭くなるように前記巻線接続部を加圧する
      電動機の製造方法。     A stator formed by winding a winding around a plurality of magnetic cores arranged in an annular shape, a rotor rotating with respect to the stator, and a winding connection arranged concentrically with the stator and connected to the winding A method of manufacturing an electric motor comprising a bus ring having a portion,
    An insertion step of inserting an end of the winding into the winding connection;
    A pressurizing step of pressurizing the winding connection so that the winding connection and the end of the winding are in contact with each other;
    Energizing the winding connection portion in a state where the winding connection portion is pressurized, and having a welding step of welding the winding connection portion and the end of the winding;
    The winding connection part is formed in an annular shape having an opening at one place,
    In the pressing step, the winding connection portion is pressurized so that the opening width of the opening is narrower than the thickness of the winding.
  2.   前記加圧工程では、前記開口を閉じるように前記巻線接続部を加圧する、
      請求項１に記載の電動機の製造方法。     In the pressurizing step, pressurize the winding connection part to close the opening,
    The manufacturing method of the electric motor of Claim 1.
  3.   前記バスリングは、導電部材を屈曲してなり、前記ステータの周方向に沿って並ぶ複数の円弧部、及び隣り合う一対の前記円弧部と前記巻線接続部の前記開口を挟む両端部との間に介在する一対の延在部を有し、
      前記一対の延在部は、前記加圧工程における前記円弧部側の端部間の距離の変化量が前記開口の前記開口幅の変化量よりも小さい、
      請求項１又は２に記載の電動機の製造方法。     The bus ring is formed by bending a conductive member, and includes a plurality of arc portions arranged along the circumferential direction of the stator, and a pair of adjacent arc portions and both end portions sandwiching the opening of the winding connection portion. Having a pair of extending portions interposed therebetween,
    In the pair of extending portions, the amount of change in the distance between the ends on the arc portion side in the pressurizing step is smaller than the amount of change in the opening width of the opening.
    The manufacturing method of the electric motor of Claim 1 or 2.
  4.   前記挿通工程では、前記巻線接続部に複数の前記巻線の端部を挿通させる、
      請求項１乃至３の何れか１項に記載の電動機の製造方法。     In the insertion step, a plurality of ends of the windings are inserted through the winding connection part,
    The method for manufacturing an electric motor according to any one of claims 1 to 3.
  5.   環状に配置された複数の磁性体コアに巻線を巻き回してなるステータと、
      前記ステータに対して回転するロータと、
      前記ステータと同心状に配置され、前記巻線が接続される巻線接続部を有するバスリングとを備え、
      前記巻線接続部は、一箇所に開口を有する環状に形成され、
      前記開口の開口幅が前記巻線の太さよりも狭い状態で、前記巻線接続部と前記巻線の端部とが接続されている
      電動機。     A stator formed by winding a winding around a plurality of annular magnetic cores;
    A rotor that rotates relative to the stator;
    A bus ring disposed concentrically with the stator and having a winding connection to which the winding is connected;
    The winding connection part is formed in an annular shape having an opening at one place,
    The electric motor in which the winding connecting portion and the end of the winding are connected in a state where the opening width of the opening is narrower than the thickness of the winding.
  6.   前記巻線接続部の前記開口が閉じられた状態で、前記巻線接続部と前記巻線の端部とが接続されている
      請求項５に記載の電動機。     The electric motor according to claim 5, wherein the winding connection portion and an end portion of the winding are connected in a state where the opening of the winding connection portion is closed.
  7.   前記バスリングは、導電部材を屈曲してなり、前記ステータの周方向に沿って並ぶ複数の円弧部、及び隣り合う一対の前記円弧部と前記巻線接続部の前記開口を挟む両端部との間に介在する一対の延在部を有し、
      前記一対の延在部は、前記円弧部側の端部間の距離が前記開口の前記開口幅よりも大きい、
      請求項５又は６に記載の電動機。     The bus ring is formed by bending a conductive member, and includes a plurality of arc portions arranged along the circumferential direction of the stator, and a pair of adjacent arc portions and both end portions sandwiching the opening of the winding connection portion. Having a pair of extending portions interposed therebetween,
    In the pair of extending portions, the distance between the end portions on the arc portion side is larger than the opening width of the opening.
    The electric motor according to claim 5 or 6.
  8.   前記バスリングは、前記ステータと同心状に形成された導電性の環状部材、及び前記環状部材の周方向に沿って並んで設けられた複数の端子を有し、
      前記複数の端子は、その一端が前記環状部材に接続され、他端に前記巻線接続部を有している、
      請求項５又は６に記載の電動機。     The bus ring has a conductive annular member formed concentrically with the stator, and a plurality of terminals provided side by side along the circumferential direction of the annular member,
    One end of each of the plurality of terminals is connected to the annular member, and the other end has the winding connection portion.
    The electric motor according to claim 5 or 6.
  9.   前記巻線接続部には、複数の前記巻線の端部が挿通されている、
      請求項５乃至８の何れか１項に記載の電動機。     In the winding connection portion, end portions of a plurality of the windings are inserted,
    The electric motor according to any one of claims 5 to 8.
PCT/JP2014/057492 2014-03-19 2014-03-19 Electric motor manufacturing method and electric motor WO2015140955A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005204452A (en) * 2004-01-16 2005-07-28 Toyota Motor Corp Manufacturing method of stator
JP2008029138A (en) * 2006-07-21 2008-02-07 Showa Corp Terminal for rotating electric machine
JP2013102596A (en) * 2011-11-08 2013-05-23 Mitsuba Corp Bus bar unit and brushless motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005204452A (en) * 2004-01-16 2005-07-28 Toyota Motor Corp Manufacturing method of stator
JP2008029138A (en) * 2006-07-21 2008-02-07 Showa Corp Terminal for rotating electric machine
JP2013102596A (en) * 2011-11-08 2013-05-23 Mitsuba Corp Bus bar unit and brushless motor

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