WO2006022440A1 - Stator for electric rotary machine - Google Patents

Stator for electric rotary machine Download PDF

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Publication number
WO2006022440A1
WO2006022440A1 PCT/JP2005/015970 JP2005015970W WO2006022440A1 WO 2006022440 A1 WO2006022440 A1 WO 2006022440A1 JP 2005015970 W JP2005015970 W JP 2005015970W WO 2006022440 A1 WO2006022440 A1 WO 2006022440A1
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WO
WIPO (PCT)
Prior art keywords
stator coil
wire
electric
neutral
point
Prior art date
Application number
PCT/JP2005/015970
Other languages
French (fr)
Inventor
Junji Deai
Original Assignee
Aisin Seiki Kabushiki Kaisha
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 Aisin Seiki Kabushiki Kaisha filed Critical Aisin Seiki Kabushiki Kaisha
Publication of WO2006022440A1 publication Critical patent/WO2006022440A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • 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
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/06—Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations

Definitions

  • the present invention relates to a stator for an electric rotary machine. More particularly, the present invention pertains to a stator for an electric rotary machine including magnet poles arranged along a rotational direction of a rotor and each having a stator coil wire.
  • a pair of magnetic pole elements form one phase.
  • An electric-source-side stator coil wire is coiled around one magnetic pole element, and a neutral-point-side stator coil wire is coiled around the other magnetic pole element.
  • the electric-source-side stator coil wire and the neutral-point-side stator coil wire are connected through a connection wire provided between the magnetic pole elements in the pair.
  • the electric-source-side stator coil wire includes an end connected to a electric source and an end connected to the connection wire.
  • the neutral-point-side stator coil wire includes an end connected to a neutral point and an end connected to the connection wire.
  • stator coil wires configured from the electric-source-side stator coil wires, the connection wires, and the neutral-point-side stator coil wires are provided in parallel.
  • two parallel stator wires are coiled for forming the a pair of magnet pole elements
  • two electric-source-side stator coil wires are coiled for forming one of the magnet pole elements in the pair
  • two neutral-point-side stator coil wires are coiled for forming the other of the magnet pole elements in the pair
  • two connection wires are provided between the pair of magnet pole elements for connecting the electric-source-side stator coil wires and the neutral-point-side stator coil wires respectively.
  • the end connected to the electric source and the end connected to the neutral point, and the connection wire of the stator wire are provided on the same side of the stator. Therefore, when the number of wires placed in parallel wires increases, space required for providing the ends connected to the electric source, the ends connected to the neutral point, and the connection wires becomes larger on that side of the stator. Then, some times, the spaces for the ends connected to the electric source, the ends connected to the neutral point, and the connection wire overlap one another, which tends to require complex wiring of the stator coil wire. The complex wiring tends to cause much labor for coiling the stator coil wire.
  • the present invention was made in view of the above circumstances and provides such a stator for an electric rotary machine.
  • the present invention can also provide a simplified structure for stators where the number of wires placed in parallel is not large.
  • a stator for an electric rotary machine has a magnetic pole member arranged along a rotational direction of a rotor.
  • the magnetic pole member includes at least two pairs of magnetic pole elements.
  • Each pair of magnetic pole elements has a stator coil wire.
  • Each stator coil wire includes an electric- source-side stator coil wire coiled around one of said pair of magnetic pole elements and a neutral-point-side stator coil wire coiled around the other of said pair of magnetic pole elements.
  • the electric-source-side stator coil wire and the neutral-point-side stator coil wires are electrically connected through a connection wire.
  • the electric-source-side stator coil wire extends between a first end connected to an electric source and the connection wire.
  • the neutral-point-side stator coil wire extends between a second end connected to a neutral point and the connection wire.
  • the first end and the second end are provided on one side of the stator whereas a connection between the electric-source-side stator coil wire and the connection wire and a connection between the neutral-point-side stator coil wire and the connection wire are provided on the other side of the stator.
  • a stator for electric rotary machine includes a magnetic pole member arranged along a rotational direction of a rotor.
  • the magnetic pole member includes at least two pairs of magnetic pole elements.
  • Each pair of magnetic pole elements has a stator coil wire.
  • Each stator coil wire includes an electric-source-side stator coil wire coiled around one of said pair of magnetic pole elements and a neutral-point-side stator coil wire coiled around the other of said pair of magnetic pole elements.
  • the electric-source-side stator coil wire and the neutral-point-side stator coil wire are electrically connected through a connection wire.
  • the electric-source- side stator coil wire extends between a first end connected to an electric source and the connection wire and the neutral-point-side stator coil wire extends between a second end connected to a neutral point and the connection wire.
  • the first end and the second end are provided on one side of the stator.
  • the number of turns of the electric-source-side stator coil wire extending between the first end and the connection wire is an integer + 1/2 and the number of turns of the neutral-point-side stator coil wire extending between second end and the connection wire is an integer + 1/2.
  • Fig. 1 represents a diagram illustrating a stator of an electric rotary machine seen from one side of the stator.
  • Fig. 2 represents a cross-sectional view illustrating the stator taken on line II-II of Fig. 1.
  • Fig. 3 represents a diagram illustrating the stator seen from the other side of the stator.
  • Fig. 4 represents a schematic view illustrating a fundamental coiled wire structure of a stator coil wire.
  • Fig. 5 represents a schematic view illustrating a parallel coiled wire structure of the stator coil wire.
  • Fig. 6 represents a diagram illustrating the electric rotary machine.
  • an electric rotary machine includes a rotor 11 and a stator S provided so as to surround the rotor 11.
  • the rotor 11 is provided so as to rotate with a shaft 12 rotatably provided at a housing 13.
  • the stator S is provided in the housing 13 so as not to rotate.
  • Fig. 1 represents a diagram illustrating the stator S of the electric rotary machine such as an electric generator and an electric motor seen from one side of the stator S.
  • Fig. 2 represents a cross-sectional view of the stator S illustrated in Fig.
  • Fig. 3 represents a diagram illustrating the stator S of the electric rotary machine illustrated in Fig. 1 seen from the other side of the stator S.
  • the stator S includes a magnetic pole member 1 forming a plurality of magnetic pole elements Ia, Ib, Ic, Id, Ie, and If (6 pole elements in the embodiment) arranged along a rotational direction of the rotor 11 so as to surround a cylindrical space in which the rotor 11 is rotatably provided.
  • Each magnetic pole elements Ia, Ib, Ic, Id, Ie, and If is configured from a stator coil wire 3 coiled around each coil frame member (2a, 2b, 2c, 2d, 2e, and 2f).
  • Each coil frame member 2a, 2b, 2c, 2d, 2e, and 2f is a part of an iron core 10.
  • the six magnetic pole elements Ia, Ib, Ic, Id, Ie 5 and If form three pairs of poles, which generate a U phase, a V phase, and a W phase.
  • the U phase is generated by a magnetic pole element Ia and a magnetic pole element Id.
  • the V phase is generated by a magnetic pole element Ie and a magnetic pole element Ib.
  • the W phase is generated by a magnetic pole element Ic and a magnetic pole element If.
  • the stator coil wire 3 forming each of the magnetic pole elements Ia, Ie, and Ic is connected to an electric source through each electric source terminal 4 (4a, 4e, 4c) serving as an end connected to the electric source.
  • an electrical terminal can serve as an end of a wire
  • an end of a wire does not always have to be a terminal.
  • an end of a wire can have other forms known to a person skilled in the art, such as an exposed conducting wire.
  • the stator coil wire 3 forming each of the magnetic pole elements Id, Ib and If is connected to each neutral point terminal 5 (5d, 5b, 5f) serving as an end connected to the neutral point.
  • stator coil wire 3 coiled for forming each of the magnetic pole element Ia, the magnetic pole element Ib, and the magnetic pole element Ic will be referred to an electric-source-side stator coil wire 3 a, 3b, and 3c.
  • the stator coil wire 3 coiled for forming each of the magnetic pole elements Id, the magnetic pole element Ib, and the magnetic pole element If will be referred to a neutral- point-side stator coil wire 3d, 3b, and 3f respectively.
  • the electric-source-side stator coil wire 3 a of the magnetic pole element Ia and the neutral-point-side stator coil wire 3d of the magnetic pole element Id are electrically connected through a connection wire 6 illustrated in Fig. 2 and Fig. 3.
  • the electric-source-side stator coil wire 3 a is provided and coiled on the frame member between the electric source terminal 4a and the connection wire 6.
  • the neutral- point-side stator coil wire 3d is provided and coiled on the frame member between the neutral point terminal 5d and the connection wire 6.
  • the electric-source-side stator coil wire 3 e of the magnet pole element Ie and the neutral-point-side stator coil wire 3b of the magnet pole element Ib are electrically connected through the connection wire 6.
  • the electric-source-side stator coil wire 3e is provided and coiled on the frame member between the electric source terminal 4e and the connection wire 6.
  • the neutral-point-side stator coil wire 3e is provided and coiled on the frame member between the neutral-point-side stator coil wire 5b and the connection wire 6.
  • the electric source terminal 4e and the neutral point terminal 5b are provided on one side of the stator S.
  • the connection wire 6 is provided on the other side of the stator S opposite to the side where the electric source terminal 4e and the neutral point terminal 5b are provided.
  • the electric-source-side stator coil wire 3 c of the magnetic pole element Ic and the neutral-point-side stator coil wire 3f of the magnetic pole element If are electrically connected through the connection wire 6.
  • the electric-source- side stator coil wire 3 c is provided and coiled on the frame member between the electric source terminal 4c and the connection wire 6.
  • the neutral-point-side stator coil wire 3d is provided and coiled on the frame member between the neutral point terminal 5d and the connection wire 6.
  • the electric source terminal 4c and the neutral point terminal 5f are provided on one side of the stator S.
  • the connection wire 6 is provided on the other side of the stator S opposite to the side where the electric source terminal 4c and the neutral point terminal 5f are provided.
  • the neutral point terminal 5f, the electric source terminal 4a, the neutral point terminal 5b, the electric source terminal 4c, and. the neutral point terminal 5d are formed as a single member in Fig. 1. However, it is not. As illustrated in Fig. 3, the neutral point terminal 5f, the neutral point terminal 5b, and the neutral point terminal 5d are electrically connected through an electrically conductive member 9 of an approximately C-shape. Further, the electric source terminal 4a and the electric source terminal 4c are insulated from each other.
  • the electric-source-side stator coil wire 3a, the connection wire 6, and the neutral-point-side stator coil wire 3d are configured from a single conducting wire.
  • the electric-source-side stator coil wire 3e, the connection wire 6, and the neutral-point-side stator wire 3b are configured from a single conducting wire.
  • the electric-source-side stator coil wire 3 c, the connection wire 6, and the neutral-point-side stator coil wire 3f are configured from a single conducting wire.
  • the electric-source-side stator coil wire 3 a is connected to the electric terminal 4a of the magnetic pole element Ia. Then, the electric- source-side stator coil wire 3 a is coiled around the coil frame member 2a a set number of times, extends to the magnetic pole Id through the connection wire 6, coiled around the coil frame member 2d of the magnetic pole Id a set number of times, and is connected to the neutral point terminal 5d.
  • Fundamental coil wire structure is as described above.
  • the electric source terminal 4a and the neutral point terminal 5d are provided on the other side of the stator S opposite from the side where the connection wire 6 is provided.
  • the number of turns of the electric-source-side stator coil wire 3a and the number of turns of the neutral-point-side stator coil wire 3d are equal to an integer + 1/2.
  • the number of turns is set to 1+1/2.
  • the fundamental coiled wire structure described above is applied to a coiled wire structure of the stator coil wire 3 for the pair of the magnetic pole elements Ie and Ib in a similar way.
  • the same structure is applied to a coiled wire structure of the stator coil wire 3 on the pair of the magnetic pole elements Ic and If.
  • a second electric-source-side stator coil wire 3 a, a second connection wire 6, and a second neutral-point-side stator coil wire 3d are provided in parallel with the electric-source-side stator coil wire 3 a, the connection wire 6, and the neutral-point-side stator coil wire 3d respectively.
  • the stator coil wire 3 having been connected to the neutral point terminal 5d from the electric source terminal 4a through the connection wire 6 in a similar way as illustrated in Fig.
  • the parallel electric-source-side stator coil wires 3 a, the parallel connection wires 6, the parallel neutral-point-side stator coil wires 3d are configured from the single conducting wire.
  • a coiled structure of the parallel electric-source-side stator coil wires 3a provided to the magnetic pole element Ia, the parallel neutral-point-side stator coil wires 3d provided to the magnetic pole element Id, and the parallel connection wires 6 provided therebetween are illustrated.
  • a coiled wire structure of a parallel electric-source-side stator coil wires 3e of the magnetic pole element Ie, a parallel neutral-point-side stator coil wires 3b of the magnetic pole element Ib, and a parallel connection wires 6 can be similarly configured as described above.
  • a parallel electric-source-side stator coil wires 3c of the magnetic pole element Ic, a parallel neutral-point-side stator coil wires 3f of the magnetic pole element If, and a parallel connection wires 6 can be similarly configured as described above.
  • the parallel stator coil wires 3 are provided between the electric source terminal 4a and the neutral point terminal 5d.
  • Stator coil wires 3 having greater number of wires extending in parallel can be provided between the electric source terminal 4a and the neutral point terminal 5d to configure a multiple parallel coil wire structure.
  • a nonary parallel coil wire structure is configured.
  • the electric-source-side stator coil wire 3 a is connected to a connection portion A of the electric source terminal 4a.
  • the electric-source-side stator coil wire 3 a is coiled around the coil frame member 2a of the magnetic pole element Ia a set number of times. Then, the electric-source-side stator coil wire 3 a is pulled out as the connection wire 6.
  • the electric source terminal 4 is provided at the other side of the stator S opposite to the side where the connection wire 6 is introduced. Therefore, the number of turns of the electric-source-side stator coil wire 3a is an integer + 1/2, as described above.
  • the electric source side-coil wire 3 a pulled out as the connection wire 6 is extended to the magnetic pole element Id through one of a groove of a double guide groove 8 formed by a guide groove member 7 illustrated in Fig. 2.
  • the double guide groove 8 is provided at the stator S.
  • One groove of the double guide groove 8 is provided adjacent to another.
  • the neutral point side-coil wire 3d is coiled around the coil frame member 2d of the magnetic pole element Id a set number of times (integer +1/2). Then, the neutral point side-coil wire 3d is pulled out and hooked to a connection portion A' of the neutral point terminal 5d.
  • connection wire 6 is extended to the magnet pole element Ia, and the electric-source-side stator coil wire 3a is coiled around the coil frame member 2a a set number of times. Then, the electric source side-coil wire 3d is pulled out and hooked to a connection portion B of the electric source terminal 4a, and coiled around the coil frame member 2a a set number of times. Then, the conducting wire is pulled out as the connection wire 6.
  • connection portions B', C, C, D, D', E, and E' are repeatedly coiled around the coil frame member 2d and the coil frame member 2a alternately and similarly hooked to connection portions B', C, C, D, D', E, and E' as described above.
  • Each connection portion of the electric source terminal 4 and the neutral point terminal 5 can be electrically connected to the conducting wire by resistance welding or the like.
  • a nonary parallel coil wire structure including nine parallel connection wires
  • a start point of coiling is the connection portion A of the electric source terminal 4a
  • an end point of coiling is the connection portion E' of the neutral point terminal 5d.
  • a coiled wire structure of a multiple parallel electric-source-side stator coil wire 3e coiled around the coil frame member 2e of the magnetic pole Ie, a multiple parallel neutral-point-side stator coil wire 3b coiled around the coil frame member 2b of the magnetic pole Ib, and a multiple parallel connection wire 6 can be configured in a similar way as described above.
  • a coiled wire structure of a multiple parallel electric-source-side stator coil wire 3 c coiled around the coil frame member 2c of the magnetic pole Ic 5 a multiple parallel neutral-point-side stator coil wire 3 f coiled around the coil frame member 2f of the magnetic pole If, and a multiple parallel connection wire 6 can be configured in a similar way as described above.
  • the electric source terminal 4 and the neutral point terminal 5 are provided at one side of the stator S, and the connection wire 6 is provided at the other side of the stator S opposite to the side where the electric source terminal 4 and the neutral point terminal 5 are provided. Accordingly, even when a coiled wire structure has large number of a multiple parallel coil, such as a nonary parallel coiled wire structure as illustrated in Fig. 1 to 3, sufficient spaces for the electric source terminal 4, the neutral point terminal 5, and the connection wire 6 can be surely obtained.
  • stator wire 3 was configured to be nonary parallel. However, it is not limited.
  • the stator wire 3 can be configured to be multiple parallel other than nonary.
  • the stator S had six magnetic poles. However, it is not limited.
  • the stator S can have a number of magnetic poles other than six.
  • the connection wire 6 was guided by the double guide groove 8. However, it is not limited in this manner.
  • the connection wire 6 can be guided by guide groove of other shapes and structure, such as guide having only one groove or more than two guide grooves.
  • an electric rotary machine includes a rotor and a stator including a magnetic pole member arranged along a rotational direction of the rotor.
  • the magnetic pole member includes at least two pairs of magnetic pole elements; each pair of magnetic pole elements has a stator coil wire.
  • Each stator coil wire includes an electric-source-side stator coil wire coiled around one of said pair of magnetic pole elements and a neutral-point-side stator coil wire coiled around the other of said pair of magnetic pole elements.
  • the electric-source-side stator coil wire and the neutral-point- side stator coil wires are electrically connected through a connection wire.
  • the electric- source-side stator coil wire extends between a first end connected to an electric source and the connection wire and the neutral-point-side stator coil wire extends between a second end connected to a neutral point and the connection wire.
  • the first end and the second end are provided on one side of the stator whereas a connection between the electric-source- side stator coil wire and the connection wire and a connection between the neutral-point- side stator coil wire and the connection wire are provided on the other side of the stator.
  • the first end and second end are provided on one side of the stator whereas connections between the electric-source-side stator coil wire and the neutral-point-side stator coil wires and the connection wire are provided on the other side of the stator.
  • a position for providing the end connected to the electric source and the end connected to the neutral point as well as a position for providing the connection wire can be provided at different locations.
  • sufficient space is provided for the end connected to the electric source, the end connected to the neutral point and for the connection wire. Therefore, wiring work for the stator coil wire becomes less troublesome.
  • an electric rotary machine can be provided by which the wiring work for the stator coil can be simplified even when the number of wires placed in parallel becomes large.
  • the present invention provides a simplified structure even when the number of wires placed in parallel is one.
  • the electric-source-side stator coil wire, the connection wire, and the neutral- point-side stator coil wire are configured from one conducting wire.
  • the electric-source-side stator coil wire, the connection wire, and the neutral-point-side stator coil wire are configured from one conducting wire, no work is required to connect the electric-source- side stator wire, the connection wire, the neutral-point-side stator wire.
  • the connection wire connecting the electric-source-side stator coil wire and the neutral-point-side stator coil wire is provided along a guide groove.
  • connection wire is provided along the guide groove, the wire can be placed in a orderly fashion without bending out of shape.
  • an electric rotary machine includes a rotor and a stator including a magnetic pole member arranged along a rotational direction of a rotor.
  • the magnetic pole member includes at least two pairs of magnetic pole elements.
  • Each pair of magnetic pole elements has a stator coil wire.
  • Each stator coil wire includes a electric-source-side stator coil wire coiled around one of said pair of magnetic pole elements and a neutral-point-side stator coil wire coiled around the other of said pair of magnetic pole elements.
  • the electric-source-side stator coil wire and the neutral-point- side stator coil wire are electrically connected through a connection wire.
  • the electric- source-side stator coil wire extends between a first end connected to an electric source and the connection wire and the neutral-point-side stator coil wire extends between a second end connected to a neutral point and the connection wire.
  • the first end and the second end are provided on one side of the stator.
  • the number of turns of the electric-source-side stator coil wire extending between the first end and the connection wire is an integer + 1/2 and the number of turns of the neutral-point-side stator coil wire extending between second end and the connection wire is an integer + 1/2.
  • the connection between the electric-source-side stator coil wire and the connection wire and the connection between the neutral-point-side stator coil wire and the connection wire are provided on the other side of the stator.
  • connection wire is provided on the other side of the stator where the end connected to the electric source and the end connected to the neutral point are provided, a position for providing the end connected to the electric source, a position for the end connected to the neutral point and a position for the connection wire can be provided at different positions. As a result, a sufficient space is provided for the end connected to the electric source and the end connected to the neutral point and for the connection wire. Therefore, wiring work for the stator coil wire can be simplified. Accordingly, an electric rotary machine can be provided by which the wiring work for the stator coil wire can be simplified even when the number of wires positioned in parallel becomes large although the present invention also simplified structures for machines with fewer parallel wires.
  • the electric rotary machine further includes a conductive member which is approximately C-shaped and is provided along the rotational direction of the rotor; wherein the ends, connected to the neutral point, of neutral-point-side stator coil wires of a plurality of the magnetic pole elements are electrically connected by the conductive member.
  • a conductive member of a simple and of an approximate C-shape having its curved portion extending along the rotational direction of the rotor is utilized. Accordingly, the conductive member can be easily connected to each of the ends to be connected to the neutral point.

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  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
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Abstract

A stator for an electric rotary machine has a magnetic pole member arranged along a rotational direction of a rotor. The magnetic pole member includes at least two pairs of magnetic pole elements. Each pair of magnetic pole elements has a stator coil wire. Each stator coil wire includes an electric-source-side coil (3a, 3c, 3e) wound around one of said pair of magnetic pole elements and a neutral-point-side coil(3b, 3d, 3f) wound around the other of said pair of magnetic pole elements. The electric-source-side coil (3a, 3c, 3e) and the neutral-point-side coil (3b, 3d, 3f) are electrically connected through a connection wire (6). Each electric-source-side coil (3a, 3c, 3e) extends between a first end (4a, 4c, 4e) connected to an electric source and the connection wire (6).Each neutral-point-side coil (3b, 3d, 3f) extends between a second end (5b, 5d, 5f) connected to the neutral point and the connection wire (6). The first ends (4a, 4c, 4e) and the second ends (5b, 5d, 5f) are provided on one axial side of the stator whereas a connection between the electric-source-side coil (3a, 3c, 3e) wire and the connection wire (6) and the connection between the neutral-point-side coil (3b, 3d, 3f) and the connection wire (6) are provided on the other axial side of the stator.

Description

DESCRIPTION
STATOR FOR ELECTRIC ROTARY MACHINE
TECHNICAL FIELD
The present invention relates to a stator for an electric rotary machine. More particularly, the present invention pertains to a stator for an electric rotary machine including magnet poles arranged along a rotational direction of a rotor and each having a stator coil wire.
BACKGROUND ART
In a conventional stator of an electric rotary machine such as an electric generator and an electric motor, as described in Japanese Patent Laid-Open Publication No. 2001- 275291, a pair of magnetic pole elements form one phase. An electric-source-side stator coil wire is coiled around one magnetic pole element, and a neutral-point-side stator coil wire is coiled around the other magnetic pole element. The electric-source-side stator coil wire and the neutral-point-side stator coil wire are connected through a connection wire provided between the magnetic pole elements in the pair. The electric-source-side stator coil wire includes an end connected to a electric source and an end connected to the connection wire. Further, the neutral-point-side stator coil wire includes an end connected to a neutral point and an end connected to the connection wire. The end connected to the electric source, the end connected to the neutral point, and the connection wire are provided on one side the stator. In addition, there are some devices where a plurality of stator coil wires, configured from the electric-source-side stator coil wires, the connection wires, and the neutral-point-side stator coil wires are provided in parallel. For example, when two parallel stator wires are coiled for forming the a pair of magnet pole elements, two electric-source-side stator coil wires are coiled for forming one of the magnet pole elements in the pair, and two neutral-point-side stator coil wires are coiled for forming the other of the magnet pole elements in the pair, and two connection wires are provided between the pair of magnet pole elements for connecting the electric-source-side stator coil wires and the neutral-point-side stator coil wires respectively.
In the conventional stator of the electric rotary machine, the end connected to the electric source and the end connected to the neutral point, and the connection wire of the stator wire are provided on the same side of the stator. Therefore, when the number of wires placed in parallel wires increases, space required for providing the ends connected to the electric source, the ends connected to the neutral point, and the connection wires becomes larger on that side of the stator. Then, some times, the spaces for the ends connected to the electric source, the ends connected to the neutral point, and the connection wire overlap one another, which tends to require complex wiring of the stator coil wire. The complex wiring tends to cause much labor for coiling the stator coil wire.
A need thus exists for a stator for an electric rotary machine enabling simple wiring work for a stator wire even when the number of stator coil wires placed in parallel is large.
The present invention was made in view of the above circumstances and provides such a stator for an electric rotary machine. The present invention can also provide a simplified structure for stators where the number of wires placed in parallel is not large.
DISCLOSURE OF THE INVENTION According to an aspect of the present invention, a stator for an electric rotary machine has a magnetic pole member arranged along a rotational direction of a rotor. The magnetic pole member includes at least two pairs of magnetic pole elements. Each pair of magnetic pole elements has a stator coil wire. Each stator coil wire includes an electric- source-side stator coil wire coiled around one of said pair of magnetic pole elements and a neutral-point-side stator coil wire coiled around the other of said pair of magnetic pole elements. The electric-source-side stator coil wire and the neutral-point-side stator coil wires are electrically connected through a connection wire. The electric-source-side stator coil wire extends between a first end connected to an electric source and the connection wire. The neutral-point-side stator coil wire extends between a second end connected to a neutral point and the connection wire. The first end and the second end are provided on one side of the stator whereas a connection between the electric-source-side stator coil wire and the connection wire and a connection between the neutral-point-side stator coil wire and the connection wire are provided on the other side of the stator.
According to a further aspect of the present invention, a stator for electric rotary machine includes a magnetic pole member arranged along a rotational direction of a rotor. The magnetic pole member includes at least two pairs of magnetic pole elements. Each pair of magnetic pole elements has a stator coil wire. Each stator coil wire includes an electric-source-side stator coil wire coiled around one of said pair of magnetic pole elements and a neutral-point-side stator coil wire coiled around the other of said pair of magnetic pole elements. The electric-source-side stator coil wire and the neutral-point-side stator coil wire are electrically connected through a connection wire. The electric-source- side stator coil wire extends between a first end connected to an electric source and the connection wire and the neutral-point-side stator coil wire extends between a second end connected to a neutral point and the connection wire. The first end and the second end are provided on one side of the stator. The number of turns of the electric-source-side stator coil wire extending between the first end and the connection wire is an integer + 1/2 and the number of turns of the neutral-point-side stator coil wire extending between second end and the connection wire is an integer + 1/2.
BRIEF DESCRIPTION OF THE DRAWINGS
The foregoing and additional features and characteristics of the present invention will become more apparent from the following detailed description considered with reference to the accompanying drawing figures in which like reference numerals designate like elements. Fig. 1 represents a diagram illustrating a stator of an electric rotary machine seen from one side of the stator.
Fig. 2 represents a cross-sectional view illustrating the stator taken on line II-II of Fig. 1. Fig. 3 represents a diagram illustrating the stator seen from the other side of the stator.
Fig. 4 represents a schematic view illustrating a fundamental coiled wire structure of a stator coil wire. Fig. 5 represents a schematic view illustrating a parallel coiled wire structure of the stator coil wire.
Fig. 6 represents a diagram illustrating the electric rotary machine.
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be explained with reference to the illustrations of the drawing figures as follows. According to an embodiment of the present invention, as illustrated in Fig. 6, an electric rotary machine includes a rotor 11 and a stator S provided so as to surround the rotor 11. The rotor 11 is provided so as to rotate with a shaft 12 rotatably provided at a housing 13. The stator S is provided in the housing 13 so as not to rotate. Fig. 1 represents a diagram illustrating the stator S of the electric rotary machine such as an electric generator and an electric motor seen from one side of the stator S. Fig. 2 represents a cross-sectional view of the stator S illustrated in Fig. 1 taken on line II-II of Fig. 1. Fig. 3 represents a diagram illustrating the stator S of the electric rotary machine illustrated in Fig. 1 seen from the other side of the stator S. As illustrated in Fig. 1 and Fig. 2, the stator S includes a magnetic pole member 1 forming a plurality of magnetic pole elements Ia, Ib, Ic, Id, Ie, and If (6 pole elements in the embodiment) arranged along a rotational direction of the rotor 11 so as to surround a cylindrical space in which the rotor 11 is rotatably provided. Each magnetic pole elements Ia, Ib, Ic, Id, Ie, and If is configured from a stator coil wire 3 coiled around each coil frame member (2a, 2b, 2c, 2d, 2e, and 2f). Each coil frame member 2a, 2b, 2c, 2d, 2e, and 2f is a part of an iron core 10. The six magnetic pole elements Ia, Ib, Ic, Id, Ie5 and If form three pairs of poles, which generate a U phase, a V phase, and a W phase. The U phase is generated by a magnetic pole element Ia and a magnetic pole element Id. The V phase is generated by a magnetic pole element Ie and a magnetic pole element Ib. The W phase is generated by a magnetic pole element Ic and a magnetic pole element If. Then, the stator coil wire 3 forming each of the magnetic pole elements Ia, Ie, and Ic is connected to an electric source through each electric source terminal 4 (4a, 4e, 4c) serving as an end connected to the electric source. In the present description, while an electrical terminal can serve as an end of a wire, an end of a wire does not always have to be a terminal. In stead, an end of a wire can have other forms known to a person skilled in the art, such as an exposed conducting wire. The stator coil wire 3 forming each of the magnetic pole elements Id, Ib and If is connected to each neutral point terminal 5 (5d, 5b, 5f) serving as an end connected to the neutral point. Accordingly, in following explanations, the stator coil wire 3 coiled for forming each of the magnetic pole element Ia, the magnetic pole element Ib, and the magnetic pole element Ic will be referred to an electric-source-side stator coil wire 3 a, 3b, and 3c. The stator coil wire 3 coiled for forming each of the magnetic pole elements Id, the magnetic pole element Ib, and the magnetic pole element If will be referred to a neutral- point-side stator coil wire 3d, 3b, and 3f respectively. The electric-source-side stator coil wire 3 a of the magnetic pole element Ia and the neutral-point-side stator coil wire 3d of the magnetic pole element Id are electrically connected through a connection wire 6 illustrated in Fig. 2 and Fig. 3. In other words, the electric-source-side stator coil wire 3 a is provided and coiled on the frame member between the electric source terminal 4a and the connection wire 6. Further, the neutral- point-side stator coil wire 3d is provided and coiled on the frame member between the neutral point terminal 5d and the connection wire 6. Then, as illustrated in Figs. 1 to 3, the electric source terminal 4a and the neutral point terminal 5d are provided on one side of the stator S. On the other hand, the connection wire 6 is provided on the other side of the stator S opposite to the side where the electric source terminal 4a and the neutral point terminal 5d are provided.
Similarly, the electric-source-side stator coil wire 3 e of the magnet pole element Ie and the neutral-point-side stator coil wire 3b of the magnet pole element Ib are electrically connected through the connection wire 6. hi other words, the electric-source-side stator coil wire 3e is provided and coiled on the frame member between the electric source terminal 4e and the connection wire 6. Further, the neutral-point-side stator coil wire 3e is provided and coiled on the frame member between the neutral-point-side stator coil wire 5b and the connection wire 6. Then, the electric source terminal 4e and the neutral point terminal 5b are provided on one side of the stator S. On the other hand, the connection wire 6 is provided on the other side of the stator S opposite to the side where the electric source terminal 4e and the neutral point terminal 5b are provided.
In addition, the electric-source-side stator coil wire 3 c of the magnetic pole element Ic and the neutral-point-side stator coil wire 3f of the magnetic pole element If are electrically connected through the connection wire 6. In other words, the electric-source- side stator coil wire 3 c is provided and coiled on the frame member between the electric source terminal 4c and the connection wire 6. Further, the neutral-point-side stator coil wire 3d is provided and coiled on the frame member between the neutral point terminal 5d and the connection wire 6. Then, the electric source terminal 4c and the neutral point terminal 5f are provided on one side of the stator S. The connection wire 6 is provided on the other side of the stator S opposite to the side where the electric source terminal 4c and the neutral point terminal 5f are provided.
In addition, it appears as if the neutral point terminal 5f, the electric source terminal 4a, the neutral point terminal 5b, the electric source terminal 4c, and. the neutral point terminal 5d are formed as a single member in Fig. 1. However, it is not. As illustrated in Fig. 3, the neutral point terminal 5f, the neutral point terminal 5b, and the neutral point terminal 5d are electrically connected through an electrically conductive member 9 of an approximately C-shape. Further, the electric source terminal 4a and the electric source terminal 4c are insulated from each other.
Next, a fundamental coiled wire structure will be explained with reference to a schematic view illustrated in Fig. 4. In the embodiment, the electric-source-side stator coil wire 3a, the connection wire 6, and the neutral-point-side stator coil wire 3d are configured from a single conducting wire. Further, the electric-source-side stator coil wire 3e, the connection wire 6, and the neutral-point-side stator wire 3b are configured from a single conducting wire. Furthermore, the electric-source-side stator coil wire 3 c, the connection wire 6, and the neutral-point-side stator coil wire 3f are configured from a single conducting wire.
As schematically illustrated in Fig. 4, the electric-source-side stator coil wire 3 a is connected to the electric terminal 4a of the magnetic pole element Ia. Then, the electric- source-side stator coil wire 3 a is coiled around the coil frame member 2a a set number of times, extends to the magnetic pole Id through the connection wire 6, coiled around the coil frame member 2d of the magnetic pole Id a set number of times, and is connected to the neutral point terminal 5d. Fundamental coil wire structure is as described above. As described above, the electric source terminal 4a and the neutral point terminal 5d are provided on the other side of the stator S opposite from the side where the connection wire 6 is provided. Accordingly, the number of turns of the electric-source-side stator coil wire 3a and the number of turns of the neutral-point-side stator coil wire 3d are equal to an integer + 1/2. In the example illustrated in Fig, 4, the number of turns is set to 1+1/2.
The fundamental coiled wire structure described above is applied to a coiled wire structure of the stator coil wire 3 for the pair of the magnetic pole elements Ie and Ib in a similar way. In addition, the same structure is applied to a coiled wire structure of the stator coil wire 3 on the pair of the magnetic pole elements Ic and If.
Next, as an application of a fundamental coiled wire structure represented in a schematic diagram illustrated in Fig. 4, a coiled wire structure represented in a schematic diagram illustrated in Fig. 5 will be explained.
In the coiled wire structure illustrated in Fig. 5, in addition to the fundamental coiled wire structure illustrated in Fig. 4, a second electric-source-side stator coil wire 3 a, a second connection wire 6, and a second neutral-point-side stator coil wire 3d are provided in parallel with the electric-source-side stator coil wire 3 a, the connection wire 6, and the neutral-point-side stator coil wire 3d respectively. In other words, the stator coil wire 3 having been connected to the neutral point terminal 5d from the electric source terminal 4a through the connection wire 6 in a similar way as illustrated in Fig. 4 is further coiled around the coil frame member 2d of the magnet pole element Id a set number of times, extends to the magnet pole element Ia, coiled around the coil frame member 2a of the magnet pole element Ia a set number of times, and is connected to the electric source terminal 4a. As described above, the parallel electric-source-side stator coil wires 3 a, the parallel connection wires 6, the parallel neutral-point-side stator coil wires 3d are configured from the single conducting wire. In addition, in Fig. 5, for the purpose of simplifying drawings, only a coiled structure of the parallel electric-source-side stator coil wires 3a provided to the magnetic pole element Ia, the parallel neutral-point-side stator coil wires 3d provided to the magnetic pole element Id, and the parallel connection wires 6 provided therebetween are illustrated. A coiled wire structure of a parallel electric-source-side stator coil wires 3e of the magnetic pole element Ie, a parallel neutral-point-side stator coil wires 3b of the magnetic pole element Ib, and a parallel connection wires 6 can be similarly configured as described above. Furthermore, a parallel electric-source-side stator coil wires 3c of the magnetic pole element Ic, a parallel neutral-point-side stator coil wires 3f of the magnetic pole element If, and a parallel connection wires 6 can be similarly configured as described above.
As mentioned above, in an example illustrated in Fig. 5, the parallel stator coil wires 3 are provided between the electric source terminal 4a and the neutral point terminal 5d. However, it is not limited in this manner. Stator coil wires 3 having greater number of wires extending in parallel can be provided between the electric source terminal 4a and the neutral point terminal 5d to configure a multiple parallel coil wire structure. For example, in the coil wire structure illustrated in Fig. 1 to Fig. 3, a nonary parallel coil wire structure is configured.
Specifically, the electric-source-side stator coil wire 3 a is connected to a connection portion A of the electric source terminal 4a. The electric-source-side stator coil wire 3 a is coiled around the coil frame member 2a of the magnetic pole element Ia a set number of times. Then, the electric-source-side stator coil wire 3 a is pulled out as the connection wire 6. At this time, the electric source terminal 4 is provided at the other side of the stator S opposite to the side where the connection wire 6 is introduced. Therefore, the number of turns of the electric-source-side stator coil wire 3a is an integer + 1/2, as described above. Then, the electric source side-coil wire 3 a pulled out as the connection wire 6 is extended to the magnetic pole element Id through one of a groove of a double guide groove 8 formed by a guide groove member 7 illustrated in Fig. 2. Here, the double guide groove 8 is provided at the stator S. One groove of the double guide groove 8 is provided adjacent to another. Then, the neutral point side-coil wire 3d is coiled around the coil frame member 2d of the magnetic pole element Id a set number of times (integer +1/2). Then, the neutral point side-coil wire 3d is pulled out and hooked to a connection portion A' of the neutral point terminal 5d. Then, the neutral point side-coil wire 3d is coiled around the coil frame member 2d a set number of times again, and pulled out as the connection wire 6. Then, the connection wire 6 is extended to the magnet pole element Ia, and the electric-source-side stator coil wire 3a is coiled around the coil frame member 2a a set number of times. Then, the electric source side-coil wire 3d is pulled out and hooked to a connection portion B of the electric source terminal 4a, and coiled around the coil frame member 2a a set number of times. Then, the conducting wire is pulled out as the connection wire 6. Further, the electric source side-coil wire 3a and the neutral point side-coil wire 3d are repeatedly coiled around the coil frame member 2d and the coil frame member 2a alternately and similarly hooked to connection portions B', C, C, D, D', E, and E' as described above. Each connection portion of the electric source terminal 4 and the neutral point terminal 5 can be electrically connected to the conducting wire by resistance welding or the like. Thus, a nonary parallel coil wire structure (including nine parallel connection wires
6 provided between the coil frame member 2a and the coil frame member 2d) illustrated in Fig. 1 to 3 is constructed. In this case, all of the nonary parallel electric-source-side stator coil wire 3 a, the nonary parallel connection wire 6, and the nonary parallel neutral-point- side stator wire 3d are configured from a single conducting wire. Therefore, a start point of coiling is the connection portion A of the electric source terminal 4a, and an end point of coiling is the connection portion E' of the neutral point terminal 5d.
In addition, a coiled wire structure of a multiple parallel electric-source-side stator coil wire 3e coiled around the coil frame member 2e of the magnetic pole Ie, a multiple parallel neutral-point-side stator coil wire 3b coiled around the coil frame member 2b of the magnetic pole Ib, and a multiple parallel connection wire 6 can be configured in a similar way as described above. Further, a coiled wire structure of a multiple parallel electric-source-side stator coil wire 3 c coiled around the coil frame member 2c of the magnetic pole Ic5 a multiple parallel neutral-point-side stator coil wire 3 f coiled around the coil frame member 2f of the magnetic pole If, and a multiple parallel connection wire 6 can be configured in a similar way as described above.
As described above, the electric source terminal 4 and the neutral point terminal 5 are provided at one side of the stator S, and the connection wire 6 is provided at the other side of the stator S opposite to the side where the electric source terminal 4 and the neutral point terminal 5 are provided. Accordingly, even when a coiled wire structure has large number of a multiple parallel coil, such as a nonary parallel coiled wire structure as illustrated in Fig. 1 to 3, sufficient spaces for the electric source terminal 4, the neutral point terminal 5, and the connection wire 6 can be surely obtained.
In following, another embodiment of the present invention will be explained. Ih the embodiment described above, the stator wire 3 was configured to be nonary parallel. However, it is not limited. The stator wire 3 can be configured to be multiple parallel other than nonary.
In the embodiment described above, the stator S had six magnetic poles. However, it is not limited. The stator S can have a number of magnetic poles other than six. In the embodiment described above, the connection wire 6 was guided by the double guide groove 8. However, it is not limited in this manner. The connection wire 6 can be guided by guide groove of other shapes and structure, such as guide having only one groove or more than two guide grooves.
According to an aspect of the present invention, an electric rotary machine includes a rotor and a stator including a magnetic pole member arranged along a rotational direction of the rotor. The magnetic pole member includes at least two pairs of magnetic pole elements; each pair of magnetic pole elements has a stator coil wire. Each stator coil wire includes an electric-source-side stator coil wire coiled around one of said pair of magnetic pole elements and a neutral-point-side stator coil wire coiled around the other of said pair of magnetic pole elements. The electric-source-side stator coil wire and the neutral-point- side stator coil wires are electrically connected through a connection wire. The electric- source-side stator coil wire extends between a first end connected to an electric source and the connection wire and the neutral-point-side stator coil wire extends between a second end connected to a neutral point and the connection wire. The first end and the second end are provided on one side of the stator whereas a connection between the electric-source- side stator coil wire and the connection wire and a connection between the neutral-point- side stator coil wire and the connection wire are provided on the other side of the stator. According to the aspect of the present invention, the first end and second end are provided on one side of the stator whereas connections between the electric-source-side stator coil wire and the neutral-point-side stator coil wires and the connection wire are provided on the other side of the stator. Accordingly, a position for providing the end connected to the electric source and the end connected to the neutral point as well as a position for providing the connection wire can be provided at different locations. As a result, sufficient space is provided for the end connected to the electric source, the end connected to the neutral point and for the connection wire. Therefore, wiring work for the stator coil wire becomes less troublesome. Accordingly, an electric rotary machine can be provided by which the wiring work for the stator coil can be simplified even when the number of wires placed in parallel becomes large. However, the present invention provides a simplified structure even when the number of wires placed in parallel is one.
According to a further aspect of the present invention, in the electric rotary machine, the electric-source-side stator coil wire, the connection wire, and the neutral- point-side stator coil wire are configured from one conducting wire. According to the aspect of the present invention, because the electric-source-side stator coil wire, the connection wire, and the neutral-point-side stator coil wire are configured from one conducting wire, no work is required to connect the electric-source- side stator wire, the connection wire, the neutral-point-side stator wire. As a result, wiring work for the stator coil wire is simplified. According to a further aspect of the present invention, the connection wire connecting the electric-source-side stator coil wire and the neutral-point-side stator coil wire is provided along a guide groove.
According to the aspect of the present invention, because the connection wire is provided along the guide groove, the wire can be placed in a orderly fashion without bending out of shape.
According to a further aspect of the present invention, an electric rotary machine includes a rotor and a stator including a magnetic pole member arranged along a rotational direction of a rotor. The magnetic pole member includes at least two pairs of magnetic pole elements. Each pair of magnetic pole elements has a stator coil wire. Each stator coil wire includes a electric-source-side stator coil wire coiled around one of said pair of magnetic pole elements and a neutral-point-side stator coil wire coiled around the other of said pair of magnetic pole elements. The electric-source-side stator coil wire and the neutral-point- side stator coil wire are electrically connected through a connection wire. The electric- source-side stator coil wire extends between a first end connected to an electric source and the connection wire and the neutral-point-side stator coil wire extends between a second end connected to a neutral point and the connection wire. The first end and the second end are provided on one side of the stator. And the number of turns of the electric-source-side stator coil wire extending between the first end and the connection wire is an integer + 1/2 and the number of turns of the neutral-point-side stator coil wire extending between second end and the connection wire is an integer + 1/2.
According to the aspect of the present invention, since the first end, connected to_ the electric source, of the electric-source-side stator coil wire and the second end, connected to the neutral point, of the neutral-point-side stator coil wire are provided on the same side of the stator, and since the number of turns of the electric-source-side stator coil wire extending between the first end connected to the electric source and the connection wire and the number of turns of the neutral-point-side stator coil wire extending between the second end connected to the neutral side and the connection wire are an integer + 1/2, the connection between the electric-source-side stator coil wire and the connection wire and the connection between the neutral-point-side stator coil wire and the connection wire are provided on the other side of the stator. In other words, because the connection wire is provided on the other side of the stator where the end connected to the electric source and the end connected to the neutral point are provided, a position for providing the end connected to the electric source, a position for the end connected to the neutral point and a position for the connection wire can be provided at different positions. As a result, a sufficient space is provided for the end connected to the electric source and the end connected to the neutral point and for the connection wire. Therefore, wiring work for the stator coil wire can be simplified. Accordingly, an electric rotary machine can be provided by which the wiring work for the stator coil wire can be simplified even when the number of wires positioned in parallel becomes large although the present invention also simplified structures for machines with fewer parallel wires.
According to a further aspect of the present invention, the electric rotary machine further includes a conductive member which is approximately C-shaped and is provided along the rotational direction of the rotor; wherein the ends, connected to the neutral point, of neutral-point-side stator coil wires of a plurality of the magnetic pole elements are electrically connected by the conductive member.
According to the aspect of the present invention, for electrically connecting a plurality of wire ends connected to the neutral point, a conductive member of a simple and of an approximate C-shape having its curved portion extending along the rotational direction of the rotor is utilized. Accordingly, the conductive member can be easily connected to each of the ends to be connected to the neutral point.

Claims

1. A stator for an electric rotary machine including a magnetic pole member arranged along a rotational direction of a rotor, characterized in that the magnetic pole member includes at least two pairs of magnetic pole elements; each pair of magnetic pole elements has a stator coil wire; each stator coil wire includes an electric-source-side stator coil wire coiled around one of said pair of magnetic pole elements and a neutral-point-side stator coil wire coiled around the other of said pair of magnetic pole elements, the electric-source-side stator coil wire and the neutral-point-side stator coil wires are electrically connected through a connection wire, the electric-source-side stator coil wire extends between a first end connected to an electric source and the connection wire, the neutral-point-side stator coil wire extends between a second end connected to a neutral point and the connection wire; and the first end and the second end are provided on one side of the stator whereas a connection between the electric-source-side stator coil wire and the connection wire and a connection between the neutral-point-side stator coil wire and the connection wire are provided on the other side of the stator.
2. The stator for electric rotary machine according to claim 1, wherein the electric- source-side stator coil wire, the connection wire, and the neutral-point-side stator coil wire are configured from one conducting wire.
3. The stator for electric rotary machine according to claim 2, wherein the connection wire connecting the electric-source-side stator coil wire and the neutral-point-side stator coil wire is provided along a guide groove.
4. A stator for electric rotary machine including a magnetic pole member arranged along a rotational direction of a rotor, characterized in that the magnetic pole member includes at least two pairs of magnetic pole elements; each pair of magnetic pole elements has a stator coil wire; each stator coil wire includes a electric-source-side stator coil wire coiled around one of said pair of magnetic pole elements and a neutral-point-side stator coil wire coiled around the other of said pair of magnetic pole elements, the electric-source-side stator coil wire and the neutral-point-side stator coil wire are electrically connected through a connection wire, the electric-source-side stator coil wire extends between a first end connected to an electric source and the connection wire, the neutral-point-side stator coil wire extends between a second end connected to a neutral point and the connection wire; the first end and the second end are provided on one side of the stator; and the number of turns of the electric-source-side stator coil wire extending between the first end and the connection wire is an integer + 1/2 and the number of turns of the neutral-point-side stator coil wire extending between second end and the connection wire is an integer + 1/2.
5. The stator for electric rotary machine according to claim 1, further comprising: a conductive member which is approximately C-shaped and is provided along the rotational direction of the rotor; wherein ends, connected to the neutral point, of neutral-point-side stator coil wires of a plurality of the magnetic pole elements are electrically connected by the conductive member.
6. The stator for electric rotary machine according to claim 2, further comprising: a conductive member which is approximately C-shaped and is provided along the rotational direction of the rotor; wherein ends, connected to the neutral point, of neutral-point-side stator coil wires of a plurality of the magnetic pole elements are electrically connected by the conductive member.
7. The stator for electric rotary machine according to claim 3, further comprising: a conductive member which is approximately C-shaped and is provided along the rotational direction of the rotor; wherein ends, connected to the neutral point, of neutral-point-side stator coil wires of a plurality of the magnetic pole elements are electrically connected by the conductive member.
8. The stator for electric rotary machine according to claim 4, further comprising: a conductive member which is approximately C-shaped and is provided along the rotational direction of the rotor; wherein ends, connected to the neutral point, of neutral-point-side stator coil wires of a plurality of the magnetic pole elements are electrically connected by the conductive member."
9. An electric rotary machine comprising a rotor and a stator including a magnetic pole member arranged along a rotational direction of the rotor, characterized in that the magnetic pole member includes at least two pairs of magnetic pole elements; each pair of magnetic pole elements has a stator coil wire; each stator coil wire includes an electric-source-side stator coil wire coiled around one of said pair of magnetic pole elements and a neutral-point-side stator coil wire coiled around the other of said pair of magnetic pole elements, the electric-source-side stator coil wire and the neutral-point-side stator coil wires are electrically connected through a connection wire, the electric-source-side stator coil wire extends between a first end connected to an electric source and the connection wire, the neutral-point-side stator coil wire extends between a second end connected to a neutral point and the connection wire; and the first end and the second end are provided on one side of the stator whereas a connection between the electric-source-side stator coil wire and the connection wire and a connection between the neutral-point-side stator coil wire and the connection wire are provided on the other side of the stator.
PCT/JP2005/015970 2004-08-26 2005-08-25 Stator for electric rotary machine WO2006022440A1 (en)

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JP4952481B2 (en) * 2007-09-28 2012-06-13 ダイキン工業株式会社 Armature
JP5363762B2 (en) * 2008-06-12 2013-12-11 株式会社マキタ Electric tool
JP5710678B2 (en) * 2013-04-16 2015-04-30 株式会社マキタ Motor stator
JP6188584B2 (en) * 2014-01-06 2017-08-30 三菱電機株式会社 Electric motor stator, electric motor and air conditioner

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