JP5232547B2 - Rotating electric machine - Google Patents

Rotating electric machine Download PDF

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JP5232547B2
JP5232547B2 JP2008170397A JP2008170397A JP5232547B2 JP 5232547 B2 JP5232547 B2 JP 5232547B2 JP 2008170397 A JP2008170397 A JP 2008170397A JP 2008170397 A JP2008170397 A JP 2008170397A JP 5232547 B2 JP5232547 B2 JP 5232547B2
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phase
connection
stator
connection ring
rotating electrical
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JP2010011690A (en
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恵 山村
健一 中山
豊 松延
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日立オートモティブシステムズ株式会社
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Description

  The present invention relates to a rotating electrical machine, and more particularly to a rotating ring provided for connecting a stator coil and a rotating electrical machine including a power distribution component using the same.

    For example, Patent Document 1 discloses a brushless motor having a stator having a structure in which a terminal of a stator coil is inserted and fixed in a through hole formed in a connection ring.

JP 2005-86985 A

  In the former prior art, since the end of the coil is inserted into the through hole formed in the connection ring, the coil wire diameter has a dimensional restriction depending on the connection ring conductor diameter. In particular, when a flat wire is used as the coil wire, there is a problem that it is difficult to form a through hole in accordance with the shape of the square wire.

The rotating electrical machine according to the present invention includes a stator , a rotor that is arranged to face the stator and is rotatably supported, and a stator coil of the same phase among the stator coils of each phase of the stator. A power distribution component having a connection ring for connection, and the connection ring is integrally formed in an annular shape from at least two superimposed linear conductors, and the connection ring includes a stator coil for each phase. connection portion to be connected to the winding end is circumferentially provided with a plurality at predetermined intervals, said each connecting portion by bending a said linear conductor, between the two linear conductors, A hole is formed in accordance with a cross-sectional shape of the winding end, and the winding end is inserted and fixed in the hole .

  The connection ring of each phase is supported by an insulating component in a concentric manner on substantially the same plane for each of the U phase, V phase, W phase, and neutral point, and connected to the winding end of the stator coil. May be.

  The connection ring of each phase is supported by insulating parts in a laminated manner in the substantially axial direction of the stator for each of the U phase, V phase, W phase, and neutral point, and connected to the winding end of the stator coil. May be.

The connection ring is composed of a linear conductor coated with an insulating material, and the terminal portion of the linear conductor forms a connection portion with the winding end after removing the insulating material, and includes a U phase and a V phase. It is preferable to arrange the connecting portions of the linear conductors of the W phase and the neutral point so as not to be adjacent to each other in the circumferential direction.

  It is preferable that the power distribution component is disposed on a stator axial end surface of the winding portion of the stator coil.

  It is preferable that the coil winding end and the connection portion are joined after the winding end of the stator coil is caulked and fixed to the connection portion.

  ADVANTAGE OF THE INVENTION According to this invention, the rotary electric machine provided with the power distribution component with low cost and productivity can be provided.

  Hereinafter, the configuration of a rotating electrical machine according to an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a main part perspective view showing a configuration of a rotating electrical machine according to an embodiment of the present invention.

  A rotating electrical machine 1 shown in FIG. 1 includes a housing 3, a stator 4 fixed to the housing 3, and a rotor 6 that can rotate with respect to the stator 4, and is used in a hybrid vehicle. A rotor 6 of the rotating electrical machine 1 is fitted to a shaft 7, and the shaft 7 is connected to a crankshaft and a transmission of an engine via a switching device such as a clutch of a hybrid vehicle. The stator 4 is fixed to the engine or the transmission case via the housing 3. The rotor 6 is disposed concentrically with respect to the stator 4 via a gap, and is rotatable. Then, the rotating electrical machine 1 is supplied with electric power, assists the engine, drives the vehicle via the transmission only by the rotating electrical machine 1, or regenerates a part of the kinetic energy of the vehicle to electric power when the vehicle decelerates. It can be done. In this embodiment, the rotating electrical machine 1 is a three-phase AC type, and a plurality of stator coils 5 provided in the stator 4 are power distribution components so as to correspond to the U phase, V phase, W phase, and neutral point. 10 is star-connected. This power distribution component 10 is provided with a power supply terminal portion 11 corresponding to each phase. In this power supply terminal portion 11, the power of each phase is supplied from a battery (not shown) via an inverter (not shown). , Are supplied to the terminal portions 11U, 11V, and 11W.

  FIG. 2 is an enlarged perspective view of the power distribution component of FIG. FIG. 3 is a perspective view for explaining a unit shape after winding of the stator coil 5 of the power distribution component of FIG.

  In FIG. 2, the stator 4 includes a plurality of stator cores 8 (FIG. 3) arranged along the circumferential direction. The stator core 8 arranged in the circumferential direction forms a circular stator 4 by being press-fitted or shrink-fitted into the housing 3. As shown in FIG. 3, the stator core 8 is formed with a tooth portion 12 that protrudes inward in the radial direction. A conductive wire (enameled wire) coated with insulation is wound around the tooth portion 12 via a bobbin 9 made of an insulating material, so that one stator coil 5 is formed. A plurality of stator coils 5 are arranged in the circumferential direction. The ends of the stator coil 5 are entangled with the flange portion of the bobbin 9 and then are raised and arranged in the axial direction of the rotating electrical machine 1. Here, the insulation coating of the coil terminal portion is peeled off at the start and end of winding of the coil. In addition, a power distribution component 10 is provided on the upper surface of the stator coil winding portion located on the end surface in the axial direction of the stator 4 so as to cover the winding portion.

  As shown in FIG. 2, the power distribution component 10 includes a connection ring 13U, 13V, 13W corresponding to each phase, a connection ring 13N constituting the neutral point of the star connection, and a ring-shaped insulation that accommodates these connection rings. It is comprised by the member 15 (refer FIG. 6). Here, the connection rings 13U, 13V, and 13W are annular, and are connected to the stator coil terminal 16 (in this embodiment, 8 locations on each connection ring) and three-phase formed substantially radially outside. Power supply terminals 11U, 11V, and 11W (see FIG. 1). In addition, the connection part 16 is provided in the approximate center of the protrusion part 21 which protruded toward the radial direction outward or axial direction of the connection ring so that it may mention later.

  The connection rings 13U, 13V, 13W provided in the power distribution component 10 and one terminal wire 20a of the stator coil 5 are connected for each same phase, and from the power supply terminal unit 11 and the terminals 11U, 11V, 11W, U-phase, V-phase, and W-phase excitation currents are supplied to the stator coil 5. Further, the other terminal wire 20b of the stator coil 5 is connected to the neutral point connection ring 13N over the entire circumference to constitute the neutral point of the star connection. The power distribution component 10 is fixed to the stator 4 when a fixing leg 15a (see FIG. 6) provided on the insulating member 15 is fitted to the bobbin.

With reference to FIGS. 4 and 5, illustrating details of connection re in g in the rotating electrical machine according to the present embodiment. FIG. 4 is a perspective view showing the configuration of the connection rings arranged concentrically. FIG. 5 shows a shape of the connection ring of FIG. 4 viewed from the axial direction and the radial direction.

  The connection rings 13U, 13V, and 13W are made of an insulated wire in which a single wire conductor (linear conductor) is covered with an insulating material, and the insulation coating of the connection portion between the terminal portion 16 and the power supply terminals 11U, 11V, and 11W is removed. Then, the two electric wires are overlapped and joined, and the shapes of the connecting portion 16 and the protruding portion 21 with the stator coil terminal are formed. Next, it is rounded into an annular shape, both end portions are bent to the outside in the radial direction, and the power supply terminals 11U, 11V, and 11W are fixed by caulking, and connected by soldering, brazing, or TIG welding.

  On the other hand, the connection ring 13N (FIG. 2) for the neutral point is similarly annular, and has a connection portion 16 with the stator coil terminal. Moreover, after removing the insulation coating of the connection portion in the same manner as the connection rings 13U, 13V, and 13W, the two electric wires are overlapped and bonded, and the connection portion 16 and the protruding portion 21 with the stator coil terminal are connected. The outer shape of the connection ring is rounded to form an annular shape. The neutral point only connects one end of the stator coil 5 in common and remains in an annular shape.

  Next, the connection rings 13U, 13V, and 13W and the connection ring 13N (FIG. 2) for the neutral point are disposed on the donut-shaped insulating member 15 in a concentric plane. In this embodiment, as shown in FIG. 6, the insulating member 15 is provided with a groove portion 18 having a depth in the axial direction concentrically in the radial direction, and a connection ring for a neutral point from the inner diameter side. 13N (see FIG. 2), 13W, 13U, and 13V are installed in the respective groove portions 18 in this order, and are integrated as a power distribution component 10. Moreover, the connection part 16 of each connection ring is shifted and arrange | positioned in the circumferential direction so that it may not adjoin in radial direction. For example, the terminal portions of the connection rings are arranged so as not to be substantially aligned in the radial direction. That is, the terminal portions are arranged between the terminal portions of the connection rings of different phases, the terminal portions of the other phases being arranged in a circumferential direction from the radial virtual line passing through the terminal portion of one phase, and a predetermined insulation distance. Is arranged to be achieved.

  Next, the assembled state of the connection ring and the stator coil of the power distribution component in the rotating electrical machine according to the present embodiment will be described with reference to FIG. FIG. 6 is a cross-sectional perspective view showing an assembled state of the stator to the connection ring of the power distribution component in the rotating electrical machine according to the embodiment of the present invention.

  In FIG. 6, the insulating member 15 of the power distribution component 10 is provided with a groove 18 in which each of the connection rings 13U, 13V, 13W, and 13N is accommodated. Holes (slots) 17 into which the terminal wires 20 a and 20 b of the stator coil 5 are inserted are provided on the bottom surface of each groove 18. The coil terminal wires 20a and 20b are inserted into the holes 17 and connected to the connection portions 16 of the connection rings.

In this embodiment, the insulating member 15 is provided with 24 holes for the neutral point connection ring and 8 holes for each of the connection rings 13U, 13V, and 13W.

  Further, the groove portion 18 of the insulating member 15 is provided with a relief portion 19 at a portion corresponding to the connection portion 16 of the connection ring in order to avoid a thermal effect when the connection portion 16 is joined. That is, the partition portions on both sides of the groove portion are thin at the portions corresponding to the connection portions 16 of the connection ring, and the distance between the connection portions 16 and the partition portions is sufficient.

  As described above with reference to FIG. 3, the terminal wires 20a and 20b at the beginning and end of winding are in a state where the insulating film at the tip is peeled off. The terminal wires 20 a and 20 b are entangled with the collar portion of the bobbin 9, bent, and rise in the axial direction of the stator 4. The winding start side terminal wire 20b is set up as a neutral point directly below the connection portion 16 of the connection ring 13N, and the other winding end side terminal wire 20a is connected to each of the connection rings for U, V, and W phase connections. It is started immediately below the connection part 16 of 13U, 13V, 13W. In FIG. 2, the terminal wires 20a and 20b of the stator coil 5 are peeped at the tip of the connection portion 16 of each connection ring. The power distribution component 10 formed in an annular shape is attached to the stator 4 in the following manner at the upper part of the winding part end face of the stator coil 5. The terminal wires 20 a and 20 b of the stator coil 5 are inserted into the connection portions 16 corresponding to the phases and neutral points of the connection ring provided in the power distribution component 10. By connecting the connecting portion 16 and the terminal wires 20a and 20b directly by soldering, brazing, TIG welding or the like, the same phase and neutral points are connected.

  Next, an insulating resin is applied to the insulating film removal portion of the connecting portion 16 including the joint portion with the coil terminal wires 20a and 20b and dried. Thereby, the insulation quality between each connection ring further improves.

  The configuration of the connection portion 16 of the connection ring of the power distribution component in the rotating electrical machine according to the present embodiment will be described with reference to FIGS. 7 and 8 are schematic perspective views showing the configuration of the connection portion 16 of the connection ring of the power distribution component in the rotating electrical machine according to the present embodiment.

Reference numerals 101 and 102 denote two linear conductors for forming the connecting portions 16 of the connection rings 13U, 13V, and 13W of the respective phases. As shown in FIG. 7A, the two linear conductors 1 01 and 102 are overlapped over the entire circumference to form a connection ring. If the configuration in which the linear conductors are overlapped over the entire circumference shown in FIG. In this example, the terminal wires 20a and 20b of the stator coil 5 are connected to the connection ring in the axial direction. For convenience of explanation, the existence of the protruding portion 21 is omitted.

  FIG. 8 shows an example in which the linear conductors 101 and 102 are overlapped and joined in the axial direction over the entire circumference. As shown in FIG. 8A, the linear conductors 101 and 102 bulge in the axial directions different from each other in the connection portion 16, so that the terminal wires 20 a and 20 b of the stator coil 5 are connected to the connection portion 16. Is inserted in advance. After inserting the terminal wires 20a and 20b of the stator coil 5 into the hole 23, the terminal wires 20a and 20b are sandwiched between the linear conductors 101 and 102 by crimping the connecting portion 16 as shown in FIG. , Fixed to the connecting portion 16. In the case of this example, the terminal wires 20a and 20b of the stator coil 5 are connected to the connection ring in the radial direction. The same applies to the case where the terminal lines 20a and 20b are connected to the connection ring in the axial direction. For convenience of explanation, the existence of the protruding portion 21 is omitted.

  In this embodiment, the linear conductor processed as the connection ring is an enameled wire with an insulating film, but when the voltage applied to the rotating electrical machine 10 is relatively low, the groove portion 18 formed in the insulating member 15. As a result, the creepage distance between the connection rings is ensured, and therefore, a bare conductor without an insulating film can be applied as the material of the connection ring.

As described above, according to the present embodiment, the following operational effects can be achieved.
(1) The connection rings 13U, 13V, 13W for connecting each phase and the neutral point of the rotating electrical machine 10 and the connection ring for the neutral point connect the stator coil and the connecting portion 16 formed in the axial direction. Therefore, the connection portion does not expand in the horizontal direction, and an insulation distance between the connection rings can be secured, so that the insulation reliability is improved.
(2) Since the connection ring is arranged concentrically on the same plane with respect to the stator axial direction, there is no overlap in the axial direction and a compact power distribution component is provided in the axial direction of the rotating electrical machine. it can.

(3) Since the connection portions 16 connected to the stator coil terminals of each phase are arranged so as not to be adjacent to each other in the circumferential direction, the insulation distance is increased and the insulation quality is improved.
(4) In Japanese Patent No. 3701039, a ring-shaped lead frame is projected inward and bent to form a connection terminal portion with a coil so that U, V, and W phases overlap in the central axis direction. Distributing components that are arranged and integrated by partial securing means are disclosed. In this prior art, connection parts are required for connection between the stator coil terminal and the connection ring, which increases the number of components and causes an increase in component costs and manufacturing costs. Further, since the connection parts are connected to the connection ring and the coil terminal at two parts, a space necessary for connection in manufacturing is also required at each part, and there is a problem that design difficulties increase.
Compared with this conventional example, the power distribution component of one embodiment has the following advantages. Since the power distribution component 10 is arranged on the axial end surface of the stator 4 and each stator coil terminal and the connection ring can be directly joined and connected, the number of power distribution components 10 can be greatly reduced, and the cost is low and the productivity is high. Power distribution parts can be provided.

(5) Since the connecting portion 16 and the stator coil terminal wires 20a and 20b are joined after being swaged and fixed, the winding end and the terminal protruding portion are melted during welding of the coil winding end and the terminal protruding portion. Does not move relatively, enabling stable welding.
(6) Since the groove portion 18 is formed in the insulating member 15, the insulation distance between the connection rings, particularly the creepage distance, is greatly secured, the insulation film of the connection ring can be eliminated, and the cost of the power distribution component 10 can be reduced. .

  (7) The connection ring is formed into an annular shape by superimposing linear conductors, and a hole matching the cross-sectional shape of the stator coil terminal wire is formed in the connection portion of the coil terminal by molding the superimposed linear conductor. Can be formed. Therefore, the shape of the connecting portion can be freely formed, and the connection with the terminal wire of the rectangular stator coil can be easily performed without increasing the cost.

  (8) Support the connection ring of each phase for each of the U-phase, V-phase, W-phase, and neutral point in the same plane, with concentric insulation parts, and connect to the winding end of the stator coil Thus, the power distribution component 10 can be configured with a height corresponding to one connection ring, the axial space of the stator end face can be suppressed, and the axial dimension of the rotating electrical machine can be reduced. Furthermore, by arranging the connection ring connection terminal on the extension of the winding end of the stator coil, power distribution components can be configured without using other connection components, reducing the number of components, component costs and manufacturing Cost can be reduced.

  (9) The terminals other than the connection ring terminals are covered with an insulating material, and the terminal parts are also arranged without being adjacent to each other. Generation of insulation failure due to discharge can be prevented. Since the connection portion is sandwiched, the connection strength can be increased and a large connection area can be obtained.

(10) The terminal part of the connection ring can be arranged in the extension part of the winding terminal of the stator coil, and a low-cost and high-productivity power distribution part can be provided without adding new parts for connection.
(11) By providing protrusions on both sides of the connection part in the circumferential direction of the connection ring and projecting the connection part in either the axial direction or the radial direction, the degree of freedom in layout when connecting the terminal wire and the connection ring Thus, a connecting operation such as caulking is facilitated, and a rotating electrical machine including a low-cost and productive power distribution component can be provided.

The power distribution component according to the present invention can be modified as follows.
(Modification 1)
As shown in FIG. 7B, the short linear conductor 103 for the connecting portion may be joined to the outer peripheral surface of the linear conductor 101 in the vicinity of the connecting portion 16. By adopting such a configuration, it is possible to reduce the amount of linear conductors used for the connection ring and to reduce the cost.

(Modification 2)
As shown in FIG. 7 (a), instead of extending the terminal wires 20a and 20b in the axial direction and connecting them at the connecting portion 16, the terminal wires 20a and 20b may be connected to the connection ring in the radial direction. . Also in this case, the same effects as the embodiment can be achieved.
(Modification 3)
The modification of the structure of the rotary electric machine connection part 16 by this Embodiment is demonstrated using FIG. FIG. 9 is a perspective view showing the configuration of the connecting portion 16 in a modified example. FIG. 9A shows a state in which the terminal wires 20a and 20b are arranged between the linear conductors, and FIG. 9B shows a state in which the terminal wires are bonded to the linear conductors by plastic working such as pressure welding and at the same time the connecting portions 16 are connected. The formed state is shown.

  The terminal wires 20a and 20b of the stator coil 5 are connected to the connection ring in two steps of FIGS. 9A and 9B. In the first step, as shown in FIG. 9A, two linear conductors are overlapped, and the terminal lines 20a and 20b are arranged therebetween. In the second step, as shown in FIG. 9B, the linear conductors are integrated by plastic working such as pressure welding to form a connection ring. At the same time, in the portion where the terminal lines 20a and 20b exist, the terminal lines 20a and 20b are sandwiched between the linear conductors, the fixing portion 16 is formed, and the terminal lines 20a and 20b are fixed. By doing in this way, a process can be simplified and it becomes possible to provide the rotary electric machine provided with the power distribution components with low cost and productivity. In the case of this example, the terminal wires 20a and 20b of the stator coil 5 are connected to the connection ring in the radial direction. The same applies to the case where the terminal lines 20a and 20b are connected to the connection ring in the axial direction. For convenience of explanation, the existence of the protruding portion 21 is omitted.

(Modification 4)
Next, another modification of the configuration of the connection portion 16 of the connection ring of the power distribution component in the rotating electrical machine according to the present embodiment will be described with reference to FIGS. 10 and 11. FIG. 10 is a perspective view showing another modified example of the configuration of the connection part 16 of the connection ring of the power distribution component in the rotating electrical machine according to the present embodiment, and also shows an exploded state. FIG. 11 is a view of the power distribution component of FIG. 10 (a) as viewed from the axial direction, (b) as viewed from diagonally above, and (c) as viewed from the radial direction.

  As shown in FIG. 10 and FIG. 11, in the power distribution component in the rotating electrical machine of this modification, the connection rings 13U, 13V, and 13W of the respective phases are arranged adjacent to each other in the axial direction, and the protruding portion 21 and the connecting portion 16 are radially outward. Suitable for. In this configuration, the width of the connecting ring is only one when viewed from the axial direction, and the radial width is reduced. In this case, an insulating member (not shown) may be interposed between the connection rings 13U, 13V, and 13W for each phase to reinforce the insulation.

(Modification 5)
With reference to FIG. 12 and FIG. 13, another modified example of the configuration of the connection portion 16 of the connection ring of the power distribution component in the rotating electrical machine according to the present embodiment will be described. FIG. 12 is a perspective view showing another modified example of the configuration of the connection portion 16 of the connection ring of the power distribution component in the rotating electrical machine according to the present embodiment, and also shows an exploded state. FIGS. 13A and 13B are (a) a diagram viewed from the axial direction, (b) a diagram viewed from diagonally above, and (c) a diagram viewed from the radial direction.

  As shown in FIGS. 12 and 13, in the power distribution component in the rotating electrical machine of this modification, the connection rings 13U, 13V, and 13W of each phase are adjacently arranged in the axial direction, and the protruding portion 21 and the connecting portion 16 are in the axial direction. It is suitable. In this configuration, the width of the connection ring is only one when viewed from the axial direction, and the circumferential width is reduced. In the case of this modified example, the width in the radial direction in which the connection ring and the protruding portion are combined is further reduced as compared with the configurations shown in FIGS. 10 and 11. Moreover, you may reinforce insulation by interposing the appropriate insulation member which is not shown in figure between the connection rings 13U, 13V, and 13W of each phase. Alternatively, each phase connection ring may be accommodated and supported on the insulating member 15 via a partition so as to be laminated in the axial direction.

According to the power distribution component according to Modifications 4 and 5 described above, the following functions and effects can be obtained in addition to the functions and effects described above.
(1) The connection ring of each phase is supported by insulating parts in a laminated manner in the substantially axial direction of the stator for each of the U phase, V phase, W phase, and neutral point, and connected to the winding end of the stator coil I tried to do it. The power distribution component 10 can be configured with a width corresponding to one connection ring, the circumferential space of the stator end face can be suppressed, and the circumferential dimension of the rotating electrical machine can be reduced. Furthermore, the connection part between the connection ring and the winding end of the stator coil can be formed both in the circumferential direction of the connection ring and in the direction of the extension of the winding end of the stator coil. It is possible to cope with the restrictions of the space.

  Note that the present invention is not limited to the configurations in the above-described embodiments as long as the characteristic functions of the present invention are not impaired.

It is a principal part perspective view which shows one Embodiment of the rotary electric machine by this invention. It is the perspective view which expanded the power distribution component of the rotary electric machine of FIG. It is a perspective view of the single-piece | unit of the stator coil of the rotary electric machine of FIG. It is a perspective view which shows the structure of the power distribution components arranged in the concentric direction in the rotary electric machine by one Embodiment of this invention. It is the shape which looked at the power distribution component of FIG. 4 from the axial direction and radial direction. It is a cross-sectional perspective view which shows the assembly | attachment state of the stator to the connection ring of the electrical distribution components in the rotary electric machine by one Embodiment of this invention. It is a perspective view which shows typically the form of the terminal part of the distribution component of the rotary electric machine by one Embodiment of this invention. It is a perspective view which shows typically the form of the terminal part of the distribution component of the rotary electric machine by one Embodiment of this invention. It is a perspective view which shows typically the form of the terminal part of the distribution component of the rotary electric machine by one Embodiment of this invention. It is a perspective view which shows the structure of the electrical distribution components arranged in the axial direction of the rotary electric machine by one Embodiment of this invention. It is the shape which looked at the power distribution component of FIG. 10 from the axial direction and radial direction. It is a perspective view which shows the structure of the electrical distribution components which arranged in the axial direction of the rotary electric machine by one Embodiment of this invention, and has arrange | positioned the connection part to the extension line of the winding end of a stator coil. It is the shape which looked at the power distribution component of FIG. 12 from the axial direction and radial direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotating electrical machine, 3 Housing, 4 Stator, 6 Rotor, 7 Shaft, 8 Stator core, 9 Bobbin, 10 Power distribution component, 11 Power supply terminal part, 11U, 11V, 11W terminal part, 12 Teeth part, Ring 13U , 13V, 13W, 13N Connection ring, 15 Insulating member, 15a Fixing leg, 16 Connection, 17 Hole (slot), 18 Groove, 19 Escape, 20a, 20b Terminal wire, 21 Projection, 23 Hole, 101 , 102,103 Linear conductor



Claims (7)

  1. A stator,
    A rotor disposed opposite to the stator and rotatably supported;
    A power distribution component having a connection ring for connecting stator coils of the same phase among the stator coils of each phase of the stator;
    The connection ring is integrally formed in a generally annular shape from at least two superposed linear conductors,
    In the connection ring , a plurality of connection portions connected to the winding ends of the stator coils of the respective phases are provided at predetermined intervals in the circumferential direction,
    Wherein the respective connecting portions, by bending a pre-Symbol linear conductor, between the two linear conductors, hole adapted to the cross-sectional shape of the winding ends are formed,
    The rotating electrical machine , wherein the winding end is inserted and fixed in the hole .
  2.   The connection ring of each phase is supported by an insulating component in a concentric manner in substantially the same plane for each of the U phase, V phase, W phase, and neutral point, and connected to the winding end of the stator coil. The rotating electrical machine according to claim 1, wherein
  3.   The connection ring of each phase is supported by insulating parts in a stacked manner in the substantially axial direction of the stator for each of the U phase, V phase, W phase, and neutral point, and connected to the winding end of the stator coil. The rotating electrical machine according to claim 1.
  4. The connection ring is composed of a linear conductor coated with an insulating material, and the terminal portion of the linear conductor forms a connection portion with the winding end after removing the insulating material, and includes a U phase and a V phase. 4. The rotating electrical machine according to claim 2, wherein the connecting portions of the linear conductors of W, W, and neutral point are arranged so as not to be adjacent to each other in the circumferential direction.
  5.   The rotating electrical machine according to claim 4, wherein the power distribution component is disposed on a stator axial end surface of a winding portion of the stator coil.
  6.   2. The rotating electrical machine according to claim 1, wherein the coil winding end and the connection portion are joined after the winding end of the stator coil is caulked and fixed to the connection portion.
  7. The protrusion part was provided in the both sides of the said connection part in the circumferential direction of the said connection ring, and the said connection part was made to protrude in either an axial direction or radial direction, The Claim 1 characterized by the above-mentioned. The rotating electrical machine described.
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JP3701639B2 (en) * 2002-08-29 2005-10-05 本田技研工業株式会社 Electric motor lead frame and power distribution parts using the same
JP2004120905A (en) * 2002-09-26 2004-04-15 Fuji Heavy Ind Ltd Motor jumper wire structure and stator structure using the same
DE10261611A1 (en) * 2002-12-27 2004-07-08 Robert Bosch Gmbh Connection element for a winding of an electrical machine
DE10318816B4 (en) * 2003-04-17 2007-06-28 Minebea Co., Ltd. Stator with wiring structure for stator windings
JP2005086985A (en) * 2003-09-11 2005-03-31 Asmo Co Ltd Stator and brushless motor using stator
JP5016969B2 (en) * 2007-04-25 2012-09-05 日立オートモティブシステムズ株式会社 Power distribution parts for rotating electrical machines
JP5140389B2 (en) * 2007-11-22 2013-02-06 株式会社日立製作所 Stator for rotating electric machine and rotating electric machine using the same

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