JP2012044829A - Rotary electric machine - Google Patents

Abstract

A rotating electrical machine including a plurality of conductive members each having an annular or arc-shaped base portion and a terminal portion extending from the base portion so as to electrically connect a coil terminal extending from a coil included in a stator. In this, the balance in arrangement of the plurality of conductive members in the radial direction and the axial direction of the stator is improved, and the degree of freedom in arrangement of the plurality of conductive members is increased while avoiding an increase in size.
A plurality of base portions 31a, 32a, 33a of a plurality of conductive members 31, 32, 33, 34 are arranged so as to be aligned along a radial direction of the stator on a plane perpendicular to the axis of the stator. The base portion 34a of the conductive member 34 is disposed so as to overlap the base portions 31a, 32a, 33a arranged in the radial direction of the stator in the axial direction of the stator.
[Selection] Figure 2

Description

  The present invention includes a plurality of conductive members each having an annular or arcuate base portion and a terminal portion extending from the base portion so as to electrically connect a coil terminal extending from a coil included in the stator. It relates to a rotating electrical machine.

  U-phase, V-phase, and W-phase conductive member bases to which the coil ends on one end side of the U-phase, V-phase, and W-phase coils are individually connected, and the U-phase, V-phase, and W-phase, respectively. Patent Document 1 discloses a brushless motor in which a neutral point base portion to which coil terminals on the other end side of the phase coil are commonly connected is arranged in the radial direction of the stator.

JP 2009-33848 A

  By the way, as disclosed in Patent Document 1, the base portions of the conductive members for U phase, V phase, and W phase and the base portions for neutral points are arranged in the radial direction of the stator. In such a configuration, the rotating electrical machine becomes larger in the radial direction of the stator in the arrangement portion of the conductive member, which is disadvantageous for the rotating electrical machine in which the radial dimension is to be suppressed.

  The present invention has been made in view of such circumstances, and improves the balance in the arrangement of the plurality of conductive members in the radial direction and the axial direction of the stator, and avoids an increase in size while arranging the plurality of conductive members. It aims at providing the rotary electric machine which raised the freedom degree of.

  In order to achieve the above object, the present invention provides an annular or arc-shaped base portion and a terminal portion extending from the base portion so as to electrically connect a coil terminal extending from a coil included in the stator. In a rotating electrical machine including a plurality of conductive members each having an annular or arc-shaped base portion and a terminal portion extending from the base portion so as to electrically connect a coil terminal extending from a coil included in a stator. In a rotating electrical machine including a plurality of conductive members, the base portions of a part of the plurality of conductive members are arranged so as to be aligned along a radial direction of the stator on a plane perpendicular to the axis of the stator. The base portion of the conductive member is overlapped with the base portion arranged along the radial direction of the stator in the axial direction of the stator. The first feature to be location.

  According to the present invention, in addition to the configuration of the first feature, the stator includes U-phase, V-phase, and W-phase coils connected by Y connection, and one end side of the U-phase, V-phase, and W-phase coils. The base portions of the U-phase, V-phase, and W-phase conductive members to which the coil terminals are individually connected are aligned along the radial direction of the stator on a plane orthogonal to the stator axis. And the base portion of the conductive member for the neutral point to which the coil terminals on the other end side of the U-phase, V-phase, and W-phase coils are connected in common is the U-phase, V-phase, and W-phase. A second feature is that the conductive member is disposed so as to overlap the base portion in the axial direction of the stator.

  In addition to the configuration of the second feature, the present invention includes the base portion of the conductive member for the U phase, the V phase, and the W phase, and three receiving grooves that fit and hold these base portions. A third feature is that at least a part of the holder and the base portion of the neutral point conductive member are embedded in a covering member made of resin.

  In addition to the configuration of the third feature, the present invention is characterized in that the base portion of the neutral point conductive member is held in direct contact with the holder.

  In addition to the configuration of the third or fourth feature, the present invention provides a coupler unit in which a connector terminal portion that is integrally extended from the base portion of the conductive member for the U phase, the V phase, and the W phase is disposed. Is formed integrally with the covering member.

  According to the present invention, in addition to any of the configurations of the third to fifth features, the base portion of the conductive member for the neutral point has a flat arc shape along a plane orthogonal to the axis of the stator. The U-phase, V-phase, and W-phase conductive members are formed so as to cover and hold the opening ends of the receiving grooves provided in the holder so as to fit and hold the base portions. This is the sixth feature.

  Furthermore, in addition to any of the configurations of the first to sixth features of the present invention, an outer surface of a portion covering the base portion of the conductive member for the neutral point in the covering member is formed as a seal surface, A seventh feature is that a seal member is interposed between the case to which the stator is fixed and the seal surface.

  The motor case 5 of the embodiment corresponds to the case of the present invention, and the fourth seal member 43 of the embodiment corresponds to the seal member of the present invention.

  According to the first aspect of the present invention, a part of the base portions of the plurality of conductive members are arranged so as to be aligned along the radial direction of the stator, and the remaining portions are overlapped with the base portions in the axial direction of the stator. Therefore, it is possible to balance the arrangement of the plurality of conductive members in the radial direction and the axial direction of the stator, and the arrangement of the plurality of conductive members is avoided while avoiding an increase in the size of the rotating electrical machine. Can increase the degree of freedom.

  According to the second feature of the present invention, the base portions of the conductive members for U-phase, V-phase and W-phase are arranged along the radial direction of the stator, and the conductive member for neutral point Is disposed so that it overlaps the base portions of the U-phase, V-phase, and W-phase conductive members in the axial direction of the stator, so that a plurality of conductive members for connecting the coils by Y connection Becomes easy.

  According to the third feature of the present invention, the base part of the conductive member for U phase, V phase and W phase, at least a part of the holder for fitting and holding the base part, and neutral point Since the base portion of the conductive member for use is embedded in the covering member made of synthetic resin, it is possible to increase the mass productivity and unitize the plurality of conductive members and holders.

  According to the fourth aspect of the present invention, since the base portion of the neutral point conductive member is held in direct contact with the holder, the base portion of the neutral point conductive member is embedded in the covering member. This makes it easy to hold the base portion.

  According to the fifth aspect of the present invention, the connector terminal portion is integrally extended from the base portion of the conductive member for U phase, V phase, and W phase, and the connector terminal portion is disposed. Is formed integrally with the covering member, so that the coupler portion can be formed simultaneously with the unitization of the plurality of conductive members and the holder, and the productivity can be improved.

  According to the sixth aspect of the present invention, the base portion of the conductive member for the neutral point is formed in a flat arc shape along a plane orthogonal to the axis of the stator, and the opening end of the receiving groove provided in the holder Therefore, the shape of the covering member at the portion covering the accommodation groove can be stabilized. That is, the opening end side of the housing groove in the state in which the base portions of the U-phase, V-phase, and W-phase conductive members are fitted and held has an uneven shape. The outer surface of the covering member may become wavy and unstable at the portion covering the opening end of the receiving groove, but the base portion is formed in a flat arc shape along a plane perpendicular to the axis of the stator. Since the opening end of the housing groove is covered, the shape of the covering member at the portion covering the housing groove can be stabilized.

  Furthermore, according to the seventh feature of the present invention, the outer surface of the covering member that covers the base portion of the conductive member for the neutral point is formed as a sealing surface. By making the outer surface a sealing surface, it is possible to contribute to ensuring sealing performance.

It is a longitudinal cross-sectional view of a brushless motor. FIG. 2 is an enlarged view of a portion indicated by arrow 2 in FIG. 1. It is a perspective view which shows the state by which the base part of the electroconductive member for U phase, V phase, and W phase was fitted and hold | maintained at the holder. It is a perspective view which shows the state by which the base part of the electrically-conductive member for neutral points was further hold | maintained at the holder of the state of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  First, in FIG. 1, a brushless motor, which is a rotating electrical machine, is fixed to the motor case 5 so as to surround a rotor 9 provided on a rotary shaft 8 rotatably supported by a motor case 5. And a stator 10.

  The motor case 5 has one end in the axial direction open and an end wall 6a at the other end in the axial direction so as to close the case main body 6 formed in a bottomed cylindrical shape, and one end opening of the case main body 6. And a lid member 7 fastened to the case main body 6 by a plurality of screw members 11. The lid member 7 is provided with a first support hole 12. The end wall 6 a of the case body 6 is provided with a second support hole 13 coaxial with the first support hole 12. The first and second support holes 12 and 13 are penetrated. In addition, between the inner periphery of the first support hole 12 and the outer periphery of the rotary shaft 8, there are a first ball bearing 14 and an annular first seal member 15 disposed axially outward from the first ball bearing 14. A second ball bearing 16 is interposed between the inner periphery of the second support hole 13 and the outer periphery of the rotary shaft 8.

  A cover 17 made of synthetic resin is fastened to the end wall 6a of the case main body 6 by a plurality of screw members 18... And an annular second seal member 19 is provided between the outer surface of the end wall 6a and the cover 17. Is installed.

  A resolver rotor 22 that constitutes a part of the resolver 21 is fixed to the rotary shaft 8 between the cover 18 and the motor case 5, and the resolver stator 23 that constitutes the resolver 21 together with the resolver rotor 22 includes the resolver 21. The rotor 22 is surrounded and fixed to a holder 24, and the holder 24 is mold-bonded to the cover 17.

  A stator 10 of the brushless motor includes a stator core 25 formed by laminating a plurality of steel plates and fixed to the case main body 6 of the motor case 5, a bobbin 26 made of synthetic resin attached to the stator core 25, and a Y connection. And the U-phase, V-phase and W-phase coils 27 wound around the bobbin 26.

  Thus, the U-phase, V-phase, and W-phase coils 27 are wound around the bobbin 26 sequentially at equal intervals in the circumferential direction of the stator 10, and the coils 27 of the respective phases are wound. A power supply unit 28 for supplying electric power to the case main body 6 is sandwiched between the case main body 6 and the lid member 7.

  Referring also to FIG. 2, the power supply unit 28 includes a U-phase conductive member 31 to which coil terminals 29 on one end side of the U-phase, V-phase, and W-phase coils 27 are individually connected. , The conductive member 32 for the V phase and the conductive member 33 for the W phase and the coil terminal 30 on the other end side of the U phase, V phase and W phase coils 27. The conductive member 34, the holder 35 that holds the conductive members 31 to 34, and a resin-made covering member 36 that embeds at least a part of the conductive members 31 to 34 and the holder 35. The conductive members 31 to 34 are made of metal, and the holder 35 and the covering member 36 are made of synthetic resin.

  In FIG. 3, the U-phase conductive member 31 is arranged in a radial direction from the base portion 31a so as to electrically connect the arc-shaped base portion 31a and the coil terminals 29 on one end side of the U-phase coils 27. Are integrally formed with a plurality of, for example, four terminal portions 31b that extend inwardly along the inner periphery of the base portion 31a. The terminal portions 31b. It is formed at the inner end of the arm portion 31c extending inward in the direction.

  The V-phase conductive member 32 and the W-phase conductive member 33 electrically connect the arc-shaped base portions 32a and 33a and the coil terminals 29 on one end side of the V-phase and W-phase coils 27. In this way, a plurality of, for example, three terminal portions 32b, 33b,... Extending inward along the radial direction from the base portions 32a, 33a are integrally provided, and the terminal portions 32b, 33b,. Are formed at the inner ends of the arm portions 32c... 33c extending inward in the radial direction from positions at equal intervals in the circumferential direction of the inner periphery of the base portions 32a and 33a.

  Base portions 31a, 32a, 33a of the U-phase conductive member 31, the V-phase conductive member 32, and the W-phase conductive member 33 are formed in an arc shape by bending a plurality of portions in the circumferential direction. These base portions 31 a to 33 a are arranged so as to be aligned along the radial direction of the stator 10 on a plane orthogonal to the axis of the stator 10.

  The holder 35 includes a holding ring portion 35a that surrounds one end portion of the bobbin 26 in the stator 10, and a flange portion that projects radially inward from the holding ring portion 35a so as to face the one end portion of the bobbin 26. 35b and guide portions 35c projecting radially inward from a plurality of locations, for example, 24 locations, spaced at equal intervals in the circumferential direction of the inner periphery of the flange portion 35b.

  The base portions 31 a to 33 a arranged so as to be aligned along the radial direction of the stator 10 on a plane orthogonal to the axis of the stator 10 are fitted and held at one end of the holding ring portion 35 a of the holder 35. Three receiving grooves 37, 38, and 39 are provided so as to open to the opposite side to the stator 10.

  Referring also to FIG. 4, U having base portions 31 a, 32 a, and 33 a that are fitted and held in receiving grooves 37 to 39 of the holder 35 among the four conductive members 31 to 34 included in the power supply unit 28. The neutral conductive member 34, which is the remaining conductive member excluding the phase conductive member 31, the V phase conductive member 32, and the W phase conductive member 33, is on a plane perpendicular to the axis of the stator 10. An annular base portion 34a that is formed flat along the coil end 30 and the coil terminals 30 on the other end side of the U-phase, V-phase, and W-phase coils 27 are electrically connected to each other with a radius from the base portion 34a. A plurality of, for example, twelve terminal portions 34b... Extending inward along the direction are integrally formed, and the terminal portions 34b... Are formed from a position at equal intervals in the circumferential direction of the inner periphery of the base portion 34a. Arm 34 extending radially inward Formed ... the inner end of.

  In addition, the base part 34a of the conductive member 34 for the neutral point is arranged so as to overlap the base parts 31a to 33a arranged in the radial direction of the stator 10 in the axial direction of the stator 10, It is held in direct contact with the holding ring portion 35 a of the holder 35 so as to cover the open ends of the receiving grooves 37 to 39. Thus, the holding ring portion 35a of the holder 35 sandwiches the base end portions of the three arm portions 34c... Of the plurality of arm portions 34c. Three pairs of positioning protrusions 35d, 35d,... Which are in contact with the inner periphery of the portion 34a are integrally protruded so as to determine the position of the base portion 34a on the holding ring portion 35a.

  The U-phase conductive member 31, the V-phase conductive member 32, and the terminal portions 31 b, 32 b, 33 b of the W-phase conductive member 33 form the base portions 31 a to 33 a in the receiving groove 37. , 38, 39 are arranged and spaced in the circumferential direction of the stator 10 while being fitted and held. The terminal portions 34b of the neutral point conductive member 34 are the terminal portions 31b of the U phase conductive member 31, the V phase conductive member 32, and the W phase conductive member 33, respectively. .., 33b... Are arranged at intervals in the circumferential direction of the stator 10.

  Moreover, the U-phase conductive member 31, the V-phase conductive member 32, the W-phase conductive member 33, and the terminal portions 31 b to 34 b of the neutral point conductive member 34 are the base portion. In the state where 31 a to 34 a are held by the holder 35, they are arranged at equal intervals in the circumferential direction of the holder 35, and the flange 35 b of the holder 35 has an inside of the receiving grooves 37, 38, 39. , 32c, 33c, which extend radially inward from the base portions 31a, 32a, 33a, and radially inward from the base portion 34a, which is in contact with and held by the holder 35. Grooves 40 for fitting the extended arm portions 34c are provided so as to extend in the radial direction of the holder 35.

  The terminal portions 31b to 34b are formed at the inner ends of the arm portions 31c to 34c so as to protrude radially inward from the inner periphery of the flange portion 35b of the holder 35. The guide portions 35c of the holder 35 are for guiding and electrically connecting coil terminals 29, 30,... Extending from one end of the stator 10 to the terminal portions 31b,. And provided integrally with the holder 35 so as to be disposed between the terminal portions 31b to 34b.

  The covering member 36 includes base portions 31a to 34a of the U-phase conductive member 31, the V-phase conductive member 32, the W-phase conductive member 33, and the neutral-point conductive member 34; A cover main portion 36a formed in an annular shape by embedding at least a part of the holder 35 and a coupler portion 36b projecting radially outward from the cover main portion 36a are integrally provided.

  The covering main portion 36a is configured such that the outer periphery of the holder main portion 35a of the holder 35 and one end portion in the axial direction of the holder main portion 35a are fitted and held by the base grooves 31a to 33a. 39 is formed so as to cover with the base portion 34a arranged so as to cover the open end of 39, and molten resin is allowed to flow into the holding ring portion 35a of the holder 35 so that the holder 35 and the covering member 36 are coupled. A plurality of notches 44, 44... Are provided to extend in the radial direction.

  By the way, the power feeding unit 28 is sandwiched between the case main body 6 and the lid member 7 while fitting the insertion cylinder portion 6b formed integrally on the opening end side of the case main body 6. On the outer periphery of the insertion cylinder portion 6b, an annular third seal member 41 that is elastically contacted with the inner periphery of the covering member 36 in the power supply unit 28 is mounted.

  An annular groove 45 having a closed end with an annular and flat sealing surface 42 is provided on the outer surface of the covering member 36 that covers the base portion 34a of the conductive member 34 for the neutral point. In the motor case 5, an annular fourth seal member 43 interposed between the lid member 7 and the seal surface 42 is fitted in the annular groove 45.

  The coupler portion 36b protrudes outward from the side wall of the motor case 5 with the covering main portion 36a sandwiched between the case main body 6 and the lid member 7, and the coupler portion 36b includes Connector terminal portions 31d, 32d, 33d projecting radially outward from the base portions 31a to 33a of the U-phase conductive member 31, the V-phase conductive member 32, and the W-phase conductive member 33 are arranged. Is done.

  Next, the operation of this embodiment will be described. The brushless motor includes annular or arc-shaped base portions 31a, 32a, 33a, 34a and coil terminals 29, 30 ... extended from coils 27 ... provided in the stator 10. A plurality of conductive members 31, 32, 33, and 34 having terminal portions 31b, 32b, 33b, and 34b extending from the base portions 31a to 34a so as to be electrically connected are provided. The base portions 31 a to 33 a of the portions 31 to 33 of the conductive members 31 to 34 are arranged so as to be aligned along the radial direction of the stator 10 on a plane orthogonal to the axis of the stator 10. The base portion 34 a is aligned with the base portions 31 a to 33 a arranged along the radial direction of the stator 10 in the axial direction of the stator 10. Since they are arranged so as to overlap, it is possible to balance the arrangement of the plurality of conductive members 31 to 34 in the radial direction and the axial direction of the stator 10, and the plurality of conductive members while avoiding an increase in the size of the brushless motor. The degree of freedom in arrangement of 31 to 34 can be increased.

  The stator 10 includes U-phase, V-phase, and W-phase coils 27 connected by Y connection, and coil terminals 29 on one end side of the U-phase, V-phase, and W-phase coils 27 are individually provided. The base portions 31 a, 32 a, 33 a of the U-phase, V-phase, and W-phase conductive members 31, 32, 33 to be connected are in a plane perpendicular to the axis of the stator 10 in the radial direction of the stator 10. The base portion 34a of the conductive member 34 for the neutral point, which is arranged so as to be lined up and to which the coil terminals 30 on the other end side of the U-phase, V-phase and W-phase coils 27 are connected in common, The U-phase, V-phase, and W-phase conductive members 31-33 are disposed so as to overlap the base portions 31a-33a in the axial direction of the stator 10, so that the U-phase, V-phase, and W-phase coils 27 ... Multiple Y-connections Thereby facilitating the arrangement of the conductive members 31-34.

  Further, the base portions 31a to 33a of the conductive members 31 to 33 for U phase, V phase, and W phase, and three receiving grooves 37, 38, and 39 for fitting and holding the base portions 31a to 33a. At least a part of the holder 35 having the above and the base portion 34a of the conductive member 34 for the neutral point are embedded in a covering member 36 made of a resin to constitute the power supply unit 28. The plurality of conductive members 31 to 34 and the holder 35 can be unitized by increasing the height.

  Moreover, since the base portion 34a of the neutral point conductive member 34 is held in direct contact with the holder 35, the base portion 34a of the neutral point conductive member 34 is embedded in the covering member 36. It becomes easy to hold the base portion 34a.

  Further, the coupler portion 36b in which the connector terminal portions 31d, 32d, 33d extending integrally from the base portions 31a to 33a of the U-phase, V-phase, and W-phase conductive members 31 to 33 are disposed is the covering. Since it is formed integrally with the member 36, the coupler portion 36b can be formed simultaneously with the unitization of the plurality of conductive members 31 to 34 and the holder 35, and productivity can be increased.

  Further, the base portion 34a of the conductive member 34 for the neutral point is formed in a flat arc shape along a plane orthogonal to the axis of the stator 10, and the U phase, V phase, and W phase. Since the base portions 31a to 33a of the conductive members 31 to 33 are fitted and held so as to cover the open ends of the receiving grooves 37 to 39 provided in the holder 35, the receiving grooves 37 It is possible to stabilize the shape of the covering member 36 at the portion covering ~ 39. That is, since the open ends of the receiving grooves 37 to 39 in the state in which the base portions 31a to 33a of the U-phase, V-phase, and W-phase conductive members 31 to 33 are fitted and held are uneven, When covered with the member 36, the outer surface of the covering member 36 may be wavy and unstable at the portion covering the open ends of the receiving grooves 37 to 39 due to the difference in resin shrinkage, but is orthogonal to the axis of the stator 10. Since the open ends of the receiving grooves 37 to 39 are covered with the base portion 34a formed in a flat arc shape along the plane, the shape of the covering member 36 at the portion covering the receiving grooves 37 to 39 can be stabilized. It is.

  Furthermore, the outer surface of the covering member 36 that covers the base portion 34a of the conductive member 34 for the neutral point is formed as a seal surface 42, and the lid member 7 of the motor case 5 to which the stator 10 is fixed; Since the 4th seal member 43 is interposed between the seal surfaces 42, it can contribute to ensuring sealing nature by making the outer surface of covering member 36 into seal surface 42 in the part where a shape stabilizes.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

  For example, in the above embodiment, the brushless motor has been described as the rotating electrical machine, but the present invention can also be applied to motors and generators other than the brushless motor.

5... Motor case 10... Stator 27... Coil 29, 30... Coil terminal 31... U-phase conductive member 31a, 32a, 33a, 34a. , 32b, 33b, 34b ... terminal portions 31d, 32d, 33d ... connector terminal portion 32 ... conductive member 33 for V phase ... conductive member 34 for W phase ... for neutral point Conductive member 35 ... Holder 36 ... Cover member 36b ... Coupler portions 37, 38, 39 ... Housing groove 42 ... Seal surface 43 ... Fourth seal member which is a seal member

Claims (7)

  An annular or arcuate base portion (31a, 32a, 33a, 34a) and a coil terminal (29, 30) extending from a coil (27) included in the stator (10) are electrically connected to the base portion. In a rotating electrical machine comprising a plurality of conductive members (31, 32, 33, 34) each having terminal portions (31b, 32b, 33b, 34b) extending from (31a, 32a, 33a, 34a), Arranged so that a part of the base portions (31a, 32a, 33a) of the conductive members (31 to 34) is aligned along the radial direction of the stator (10) on a plane orthogonal to the axis of the stator (10). The base portions (31a, 32a, 33a) in which the base portions (34a) of the remaining conductive members (34) are arranged along the radial direction of the stator (10). Rotating electric machine characterized in that it is arranged to overlap in the axial direction of the stator (10).   The stator (10) includes a U-phase, V-phase and W-phase coil (27) connected by Y connection, and a coil terminal (29) on one end side of the U-phase, V-phase and W-phase coil (27). The base portions (31a to 33a) of the U-phase, V-phase, and W-phase conductive members (31 to 33) that are individually connected to each other are planes orthogonal to the axis of the stator (10). It is arranged so as to be aligned along the radial direction of the stator (10), and is used for a neutral point where the coil terminals (30) on the other end side of the U-phase, V-phase and W-phase coils (27) are connected in common. The base portion (34a) of the conductive member (34) is connected to the base portions (31a to 33a) of the U-phase, V-phase and W-phase conductive members (31 to 33a) of the stator (10). 2. It arrange | positions so that it may overlap in an axial direction. Rolling electric.   The base portions (31a to 33a) of the U-phase, V-phase and W-phase conductive members (31 to 33), and three housing grooves for fitting and holding the base portions (31a to 33a) At least a part of the holder (35) having (37, 38, 39) and the base part (34a) of the conductive member (34) for the neutral point are embedded in the covering member (36) made of resin. The rotating electric machine according to claim 2, wherein the rotating electric machine is sealed.   The rotating electrical machine according to claim 3, wherein the base portion (34a) of the conductive member (34) for the neutral point is held in direct contact with the holder (35).   Coupler portion in which connector terminal portions (31d, 32d, 33d) extending integrally from the base portions (31a-33a) of the U-phase, V-phase and W-phase conductive members (31-33) are disposed. The rotating electrical machine according to claim 3 or 4, wherein (36b) is formed integrally with the covering member (36).   The base portion (34a) of the conductive member (34) for the neutral point is formed in a flat arc shape along a plane orthogonal to the axis of the stator (10), and for the U-phase, V Openings of the receiving grooves (37 to 39) provided in the holder (35) so as to fit and hold the base portions (31a to 33a) of the phase and W phase conductive members (31 to 33). The rotating electrical machine according to claim 3, wherein the rotating electrical machine is disposed so as to cover an end.   An outer surface of a portion of the covering member (36) covering the base portion (34a) of the conductive member (34) for the neutral point is formed as a seal surface (42), and the stator (10) is fixed. The rotating electrical machine according to any one of claims 1 to 6, wherein a sealing member (43) is interposed between the case (5) and the sealing surface (42).

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