JP4823772B2 - Stator coil connection member, stator coil connection member manufacturing method, and rotating electric machine - Google Patents

Description

  The present invention relates to a stator coil connecting member for connecting a stator coil incorporated in a stator of a rotating electrical machine, a method for manufacturing a stator coil connecting member, and a rotating electrical machine.

  Conventionally, in the connection member of the stator coil that connects the coils of the same phase via the conductive member, the conductive member is used for one phase-specific conductive member having the same shape in each phase of at least two phases, There is further provided a common conductive member for commonly connecting the ends of the different-phase stator coils, and the phase-specific conductive member and the common conductive member are laminated and fixed in an electrically insulated state by a ring-shaped insulator (for example, , See Patent Document 1).

Japanese Patent Laid-Open No. 6-233383

  However, according to the above conventional technique, since the current supplied from the power source to each stator coil of the same phase is distributed from one phase-specific conductive member, the cross-sectional area of the phase-specific conductive member needs to be increased. For this reason, there is a problem that the whole connecting member becomes large. Moreover, since the arrangement | positioning diameters of a separate electroconductive member and a common electroconductive member differ, there also existed a problem that the whole connection member will become large from this.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining the connection member of the stator coil reduced in size.

In order to solve the above-described problems and achieve the object, the present invention provides a stator coil connecting member that connects a plurality of stator coils of a rotating electrical machine via a conductive member, and is a stator coil having the same phase. A plurality of arc-shaped phase-separated conductive members separated from each other and the same-phase arc-shaped phase-separated conductive members are spaced apart in the axial direction of the rotating electrical machine in an electrically insulated state to connect different-phase stator coils In a stator coil connection member comprising a plurality of arc-shaped phase-separated conductive members separated from each other, a plurality of waveform detour portions that swell outward or inward are formed in the arc portion of each arc-shaped phase-specific conductive member, By shifting the different-phase arc-shaped conductive member in the circumferential direction with respect to the in-phase arc-shaped conductive member, at least one corrugated bypass portion of one arc-shaped conductive member becomes another arc-shaped phase. Waveform detour and weight of another conductive member In such a way that the convex portion of one of the waveform detours is supported by a support pin provided in the resin mold, the resin is filled between the arc-shaped phase-specific conductive members, and the in-phase and out-of-phase The arc-shaped phase-specific conductive members are integrally molded with resin .

  According to this invention, there exists an effect that the small connection member of a stator coil is obtained.

  Embodiments of a stator coil connection member according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a front view showing Embodiment 1 of a stator coil connection member according to the present invention, FIG. 2 is a side view of the connection member, and FIG. 3 shows a connection member as a stator of a rotating electrical machine. FIG. 4 is an exploded perspective view of the connecting member of the first embodiment, and FIG. 5 shows a method of supporting the arc-shaped phase-specific conductive member in the resin molding die. 6 is a connection diagram of the stator coil by the connection member of the first embodiment, FIG. 7 is a connection diagram of the stator coil by the conventional connection member, and FIG. 8 is a conventional fixation diagram. It is a connection diagram equivalent to the connection of the stator coil of Embodiment 1 which divided the connection of the child coil.

  As shown in FIG. 3, a stator 10 of a rotating electrical machine is formed by laminating magnetic thin plates to form a substantially cylindrical shape and a stator core 11 having twelve magnetic poles on the inner peripheral side at an angular pitch of 90 ° with each other. Four U-phase coils U1 to U4 attached to four spaced apart magnetic poles, and four V-phase coils V1 attached to one adjacent magnetic pole that is shifted 30 ° clockwise from each of the U-phase coils U1 to U4 12 stator coils 12 comprising: ~ V4 and W-phase coils W1 to W4 attached to the magnetic poles adjacent to each other by 30 ° clockwise from each of the V-phase coils V1 to V4. Yes. Each stator coil 12 is wound around a coil bobbin 13 and attached to each magnetic pole.

  The winding start end and winding end end of each stator coil 12 are pulled out to one end (upper part of FIG. 3) of the stator 10, and the winding end end is a position shifted by 15 ° in the counterclockwise direction from the winding start end. Drawn out. Therefore, a total of 24 winding start ends and winding end ends of the 12 stator coils 12 are arranged on the same circumference at an angular pitch of 15 °.

  As shown in FIGS. 1 to 4, the connecting member 100 of the stator coil 12 of the first embodiment is arranged on a circumference having the same diameter, and the winding start ends of the U-phase stator coils U <b> 1 and U <b> 2, respectively. Two arcuate U-phase conductive members 20 and 20 having a pitch angle of 90 ° are provided to connect the winding start ends of the U-phase stator coils U3 and U4. The two arcuate U-phase conductive members 20, 20 are arranged at point-symmetrical positions about the axis center of the stator 10.

  Further, the connecting member 100 is separated from the arcuate U-phase conductive members 20 and 20 in the axial direction of the stator 10 in an electrically insulated state (separated upward in FIG. 4), and the arcuate U-phase conductive member 20. , 20 are arranged on a circumference having the same diameter, and pitch angles 90 connecting the winding start ends of the V-phase stator coils V1 and V2 and the winding start ends of the V-phase stator coils V3 and V4, respectively. Two arcuate V-phase conductive members 30 and 30 are provided. The two arcuate V-phase conductive members 30, 30 are arranged at point-symmetrical positions about the axis center of the stator 10, and are offset by 30 ° clockwise in the circumferential direction with respect to the arcuate U-phase conductive members 20, 20. Has been.

  Further, the connecting member 100 is separated from the arcuate V-phase conductive members 30 and 30 in the axial direction of the stator 10 in an electrically insulated state (spaced upward in FIG. 4), and the arcuate V-phase conductive member 30. , 30 are arranged on a circumference having the same diameter as each other, and the pitch angle 90 connecting the winding start ends of the W-phase stator coils W1 and W2, and the winding start ends of the W-phase stator coils W3 and W4, respectively. Two arcuate W-phase conductive members 40, 40 are provided. The two arc-shaped W-phase conductive members 40, 40 are arranged at point-symmetrical positions about the axis center of the stator 10, and are shifted by 30 ° clockwise in the circumferential direction with respect to the arc-shaped V-phase conductive members 20, 20. Has been.

  The arcuate U-phase, V-phase, and W-phase conductive members 20, 30, and 40 are collectively referred to as arc-shaped phase-specific conductive members. The arc-shaped phase-specific conductive members extend to the outer peripheral side at both ends, and J-shaped coil connection terminals U1s to U4s, V1s to V4s for connecting the winding start end of the stator coil 12 by fusing welding or caulking or the like. , W1s to W4s. The coil connection terminals U1s to U4s, V1s to V4s, and W1s to W4s are formed to be bent at the same height in the axial direction of the stator 10. Moreover, the arc-shaped phase-specific conductive member has power connection terminals Ut to Wt connected to external power supply lines at one end (see FIG. 1).

  Since the coil connection terminals U1s to U4s, V1s to V4s, W1s to W4s are bent so as to be at the same height in the axial direction of the stator 10, automation such as fusing welding or caulking becomes easy. Productivity is improved.

  Further, the connecting member 100 is separated from the arcuate W-phase conductive members 40 and 40 in the axial direction of the stator 10 in an electrically insulated state (spaced upward in FIG. 4), and the arcuate W-phase conductive member 40. , 40 on the circumference of the same diameter, respectively, the winding ends of the stator coils U1, V1, W1, the winding ends of U2, V2, W2, the winding ends of U3, V3, W3, U4, respectively. , V4 and W4 are connected to each other, and four arc-shaped common conductive members 50 having a pitch angle of 60 ° are used as neutral points.

  The four arc-shaped common conductive members 50 are arranged at point-symmetric positions with respect to the axial center of the stator 10. The arc-shaped common conductive member 50 has three J-shaped coil connection terminals U1e to U1e, which extend to the outer peripheral side at both ends and the center and connect the winding end of the stator coil 12 by fusing welding or caulking. W1e, U2e to W2e, U3e to W3e, U4e to W4e. The coil connection terminals U1e to W1e, U2e to W2e, U3e to W3e, U4e to W4e and the power supply connection terminals Ut to Wt are arranged in the axial direction of the stator 10 with the coil connection terminals U1s to U4s, V1s to V4s, W1s to W4s. It is good to bend and form so that it may become the same height position. The arc-shaped phase-specific conductive member and the arc-shaped common conductive member are collectively referred to as a conductive member. In the above description, the arc-shaped phase-specific conductive member and the arc-shaped common conductive member have been described as being arranged on the circumference of the same diameter, but need to be arranged on the circumference of the same diameter. There may be different diameters.

  The different-phase arc-shaped phase-specific conductive members 20, 30, 40 and the arc-shaped common conductive member 50 are placed in a resin mold in a state of being separated in the axial direction of the stator 10, and the different-phase arc-shaped phase Resin 65 serving as a holding member is filled between the different conductive members 20, 30, and 40, between the arc-shaped phase-specific conductive member 40 and the arc-shaped common conductive member 50, and outside portions thereof, and coil connection terminals In addition, the stator coil connection member 100 is formed by integrally molding the resin into a ring shape with the power connection terminal protruding to the outer peripheral side.

  At the time of resin integral molding of the ring-shaped connecting member 100, twelve hook-shaped support legs 101 extending radially are integrally molded between the coil connection terminals on the outer peripheral portion of the ring. When the connecting member 100 is attached to the stator 10, the support leg 101 supports the connecting member 100 by being fixed to the coil bobbin 13 of the stator coil 12.

  In the first embodiment, PPS (polyphenylene sulfide) to which about 40% of glass / mineral fiber is added is used as the insulating molding resin (thermoplastic resin) 65. PPS is excellent in electrical characteristics, heat resistance and mechanical strength, and has relatively high molding dimensional accuracy. By adding mineral fibers, the affinity between the conductive member and the insulating molding resin 65 is improved.

  The conductive members 20, 30, 40, and 50 are insert-molded in a state where the coil connection terminal and the power supply connection terminal are separated from each other in the axial direction of the stator 10 by gripping the coil connection terminal and the power supply connection terminal. Due to the pressure, the arc portion of the conductive member may be deformed, and the conductive members may come into contact with each other, causing a short circuit between phases.

  In order to avoid a short circuit between the phases, the arc portion of the conductive member may be positioned and fixed in the axial direction in the mold. In the first embodiment, as shown in FIG. 5, a corrugated detour portion 60 that swells outward at three to five locations on each arc portion of the arc-shaped phase-specific conductive members 20, 30, 40 (may be swelled inside). ), And the corrugated detours 60 (which may swell inside) may be formed on the arc part of the arc-shaped common conductive member 50, and the arc-shaped common conductive member 50 may be formed on the arc-shaped common conductive member 50. , 40 is shifted clockwise by 30 ° in the circumferential direction so that at least one corrugated bypass portion 60 of one conductive member 30 does not overlap with the corrugated bypass portion 60 of the other conductive members 20, 40, 50, The convex portion of the one waveform bypass portion 60 is supported by being sandwiched by two upper and lower support pins 70 provided on the resin molding die, or supported by one of the upper and lower support pins 70. Yes. The arc-shaped phase-specific conductive members 20, 30, and 40 are not the same shape because the number of the waveform bypass portions 60 formed in the arc portion is different.

  In addition, one conductive member detoured by the corrugated detour portion 60 of the other conductive member 30, 40, 50 so that the corrugated detour portion of the other conductive member 30, 40, 50 overlaps the arc portion of one conductive member 20. The arc portion of the member 20 may be supported by being sandwiched between two upper and lower support pins 80 provided on the mold, or may be supported by any one of the upper and lower support pins 80.

  The support pins 70 and 80 are attached to a resin molding die, and when the resin 65 is injected into the die and the connecting member 100 is integrally molded with the resin, the support pins 70 and 80 are removed when the resin molding die is removed. Is also extracted from the connecting member 100 together with the resin mold. The 24 small holes 81 shown in FIGS. 1 and 3 are traces of the support pins 80 being extracted.

  Since the conductive members 20, 30, 40, 50 are individually supported in the mold by the support pins 70, 80, there is no need to separately sandwich an insulator between the conductive members 20, 30, 40, 50. The operation | work which arrange | positions the electrically-conductive members 20, 30, 40, and 50 to is simplified.

  Further, when the conductive members 20, 30, 40, 50 are stacked with holes that allow the support pins 70, 80 to pass therethrough, the holes that allow the support pins 70, 80 to penetrate the conductive members 20, 30, 40, 50. Since the cross-sectional area is reduced and the current capacity is reduced, in the first embodiment, the cross-sectional area is not reduced by forming the waveform bypassing part 60 that bypasses the location of the support pin 80, and the current capacity is reduced. Preventing the decline.

  The method for supporting the conductive member in the mold using the corrugated bypass portion 60 and the support pins 70 and 80 described above can also be used as a conventional method for supporting a C-shaped or ring-shaped conductive member.

  The connecting member 100 integrally molded with resin as described above is placed on one end of the stator 10 from which the winding start end and winding end end of the stator coil 12 are drawn, and the support leg 101 is fixed to the coil bobbin 13 to connect the connecting member. 100 is attached to the stator 10.

  As shown in FIGS. 1 to 4, the winding start ends of the stator coils U1, V1, and W1 are fusing welded to the coil connection terminals U1s, V1s, and W1s of the arc-shaped phase-specific conductive members 20, 30, and 40, respectively. To do. The winding start ends of the stator coils U2, V2, and W2 are fusing-welded to the coil connection terminals U2s, V2s, and W2s of the arc-shaped phase-specific conductive members 20, 30, and 40, respectively.

  The winding start ends of the stator coils U3, V3, and W3 are fusing welded to the coil connection terminals U3s, V3s, and W3s of the arc-shaped phase-specific conductive members 20, 30, and 40, respectively. The winding start ends of the stator coils U4, V4, and W4 are fusing welded to the coil connection terminals U4s, V4s, and W4s of the arc-shaped phase-specific conductive members 20, 30, and 40, respectively.

  The winding end ends of the stator coils U1, V1, and W1 are fused and welded to the coil connection terminals U1e, V1e, and W1e of the arc-shaped common conductive member 50, respectively. The winding end ends of the stator coils U2, V2, and W2 are fusing welded to the coil connection terminals U2e, V2e, and W2e of the arc-shaped common conductive member 50, respectively.

  The winding end ends of the stator coils U3, V3, and W3 are subjected to fusing welding to the coil connection terminals U3e, V3e, and W3e of the arc-shaped common conductive member 50. The winding end ends of the stator coils U4, V4, W4 are fusing welded to the coil connection terminals U4e, V4e, W4e of the arc-shaped common conductive member 50.

  When twelve stator coils 12 are connected by the connecting member 100 as described above, the stator 10 according to the first embodiment has a three-phase Y connection (4 // Y) by four parallel circuits as shown in FIG. Connection) structure. If a rotor (not shown) is mounted in the stator 10 in which the stator coil 12 is connected by the connecting member 100 as described above, a rotating electrical machine is obtained.

  As shown in FIG. 7, the conventional stator described in Patent Document 1 or the like is connected in parallel at the winding start ends of four stator coils of U phase, V phase, and W phase with one conductive member, Further, the neutral points of the four Y connections are connected in parallel by one conductive member.

  The three-phase Y-connection (4Y // connection) structure of the stator 10 according to the first embodiment shown in FIG. 6 using four parallel circuits is similar to the conventional stator parallel circuit shown in FIG. Divided at 6 * marked locations. Thus, even if the parallel circuit is divided, the electrical and magnetic characteristics of the stator 10 of the first embodiment are not different from those of the conventional parallel circuit.

  In the conventional stator, the winding start ends of each of the four stator coils of the U phase, V phase, and W phase are connected in parallel by one conductive member, so that the current from the power source that is shunted to each stator coil is supplied. Power distribution is performed by one conductive member, and the cross-sectional area of the conductive member must be increased. Therefore, it is difficult to reduce the size of the entire connection member. However, in the connection member 100 according to the first embodiment, the current from the power source is divided by dividing the phase-specific conductive members into a plurality, and the current is reduced to reduce the current. By reducing the cross-sectional area of the member, the entire connecting member is miniaturized. In addition, by dividing the conductive member into a plurality of portions in the circumferential direction and forming an arc shape, the material yield of the conductive member can be improved as compared with a conventional C-shaped conductive member. According to the connection member 100 of the first embodiment, a connection member having a three-phase Y connection (4 // Y connection) structure with a miniaturized four parallel circuit can be obtained.

Embodiment 2. FIG.
FIG. 9 is a connection diagram of the stator coil by the connection member 200 according to the second embodiment, FIG. 10 is a front view showing the connection member 200 according to the second embodiment, and FIG. 2 is an exploded perspective view of a connection member 200. FIG.

  As shown in FIG. 9, the connection member 200 of Embodiment 2 connects the stator 10 to a three-phase Y connection (2 // Y connection) structure with two parallel circuits.

  As shown in FIGS. 9 to 11, the connecting member 200 of the stator coil 12 of the second embodiment is arranged on the circumference of the same diameter, and is fixed to the winding end of the U-phase stator coil U <b> 1. Two arcuate U-phase conductive members 22 and 22 having a pitch angle of 75 ° connecting the winding start end of the child coil U2 and the winding end end of the U-phase stator coil U3 and the winding start end of the stator coil U4 are provided. ing. The two arcuate U-phase conductive members 22, 22 are arranged at point symmetry positions about the axis center of the stator 10.

  The connecting member 200 includes two U-phase conductive members 52 and 52 that are arranged on a circumference having the same diameter and connect the winding start ends of the U-phase stator coils U1 and U3 to a power source, respectively. . The two U-phase conductive members 52 and 52 are disposed at point symmetry positions about the axis center of the stator 10.

  Further, the connecting member 200 is separated from the arcuate U-phase conductive members 22 and 22 in the axial direction of the stator 10 in an electrically insulated state (spaced upward in FIG. 11), and the arcuate U-phase conductive member 22. , 22 are arranged on a circumference having the same diameter as the winding ends of the V-phase stator coil V1, the winding start end of the stator coil V2, and the winding end end of the V-phase stator coil V3 and the stator, respectively. Two arcuate V-phase conductive members 32 and 32 having a pitch angle of 75 ° for connecting the winding start end of the coil V4 are provided. The two arcuate V-phase conductive members 32, 32 are arranged at point symmetry positions about the axis of the stator 10, and are offset by 30 ° clockwise relative to the arcuate U-phase conductive members 22, 22. Has been.

  The connecting member 200 includes two V-phase conductive members 53 and 53 that are arranged on the circumference of the same diameter and connect the winding start ends of the V-phase stator coils V1 and V3 to the power source, respectively. . The two V-phase conductive members 53 and 53 are arranged at point symmetry positions about the axis center of the stator 10.

  Further, the connecting member 200 is separated from the arcuate V-phase conductive members 32 and 32 in the axial direction of the stator 10 in an electrically insulated state (separated upward in FIG. 11), and the arcuate V-phase conductive member 32. , 32 on the circumference of the same diameter as that of the stator coil W1, the winding end of the W-phase stator coil W1 and the winding start end of the stator coil W2, and the winding end of the W-phase stator coil W3 and the stator, respectively. Two arcuate W-phase conductive members 42, 42 having a pitch angle of 75 ° for connecting the winding start end of the coil W4 are provided. The two arc-shaped W-phase conductive members 42 and 42 are arranged at point-symmetrical positions about the axis center of the stator 10, and are shifted by 30 ° clockwise in the circumferential direction with respect to the arc-shaped V-phase conductive members 32 and 32. Has been.

  The connecting member 200 includes two W-phase conductive members 54 and 54 that are arranged on the circumference of the same diameter and connect the winding start ends of the W-phase stator coils W1 and W3 to the power source, respectively. . The two W-phase conductive members 54, 54 are arranged at point symmetry positions about the axis center of the stator 10.

  The arcuate U-phase, V-phase, and W-phase conductive members 22, 32, and 42 are collectively referred to as arc-shaped phase-specific conductive members. The arc-shaped phase-specific conductive member extends to the outer peripheral side at one end portion, and J-shaped coil connection terminals U2s, U4s, V2s, V4s, W2s for connecting the winding start end of the stator coil 12 by fusing welding or the like. , W4s, and J-shaped coil connection terminals U1e, U3e, V1e, V3e, which extend to the outer peripheral side at the other end and connect the winding end of the stator coil 12 by fusing welding or the like. W1e and W3e are included.

  The U-phase, V-phase, and W-phase conductive members 52, 53, and 54 are J-shaped coil connection terminals U1s that extend to the outer peripheral side and connect the winding start end of the stator coil 12 by fusing welding or the like. U3s, V1s, V3s, W1s, W3s.

  The coil connection terminals are bent so as to be at the same height in the axial direction of the stator 10. The U-phase, V-phase, and W-phase conductive members 52, 53, and 54 have power connection terminals Ut to Wt that are connected to external power supply lines (see FIG. 10).

  Further, the connecting member 200 is separated from the arc-shaped W-phase conductive members 42, 42 in the axial direction of the stator 10 in an electrically insulated state (spaced upward in FIG. 11), and the arc-shaped W-phase conductive member 42 , 42 are arranged on a circumference having the same diameter as each other, and are respectively pitch angles that connect the winding end ends of the stator coils U2, V2, and W2 and the winding end ends of the U4, V4, and W4 to neutral points. Two arc-shaped common conductive members 50 having the same shape of 60 ° are provided.

  The two arc-shaped common conductive members 50 are arranged at point-symmetric positions with respect to the axis center of the stator 10. The arc-shaped common conductive member 50 has three J-shaped coil connection terminals U2e to W2e, U4e that extend to the outer peripheral side at both ends and the center and connect the winding end of the stator coil 12 by fusing welding. ~ W4e. The arc-shaped common conductive member 50 can have the same shape as the arc-shaped common conductive member 50 of the first embodiment.

  The different-phase arc-shaped conductive members 22, 32, 42, the conductive members 52, 53, 54, and the arc-shaped common conductive member 50 are separated from each other in the axial direction of the stator 10. In-phase, between the arc-shaped phase-specific conductive members 20, 30, 40 and the conductive members 52, 53, 54, between the arc-shaped phase-specific conductive member 40 and the arc-shaped common conductive member 50, and outside The portion 65 is filled with resin 65, and the coil connection terminal 200 and the power connection terminal are integrally formed in a ring shape with the coil connection terminal and the power supply connection terminal projecting to the outer peripheral side, thereby forming the stator coil connection member 200.

  Except for the above-described portion of the connection member 200 of the second embodiment, there is no difference from the connection member 100 of the first embodiment. The appearance of the connection member 200 of the second embodiment is not different from the appearance of the connection member 100 of the first embodiment.

  In the connection member 200 of the second embodiment, the phase-specific conductive members are divided into a plurality of parts, the current from the power source is branched, the energization current is reduced, the cross-sectional area of the phase-specific conductive members is reduced, and the entire connection member is downsized. ing. In addition, by dividing the conductive member into a plurality of portions in the circumferential direction and forming an arc shape, the material yield of the conductive member can be improved as compared with the conventional C-shape. According to the connection member 200 of the second embodiment, a connection member having a three-phase Y-connection (2 // Y-connection) structure with two miniaturized parallel circuits can be obtained.

Embodiment 3 FIG.
FIG. 12 is a connection diagram of the stator coil by the connection member of the third embodiment, FIG. 13 is a front view showing the connection member of the third embodiment, and FIG. 14 is a connection member of the third embodiment. FIG.

  As shown in FIG. 12, the connection member 300 of Embodiment 3 connects the stator 10 to a three-phase Y connection (1 // Y connection) structure using a single-row circuit.

  As shown in FIGS. 12-14, the connection member 300 of the stator coil 12 of Embodiment 3 is arrange | positioned on the circumference of the same diameter, and is respectively fixed to the winding end end of the U-phase stator coil U1. The winding start end of the child coil U2, the winding end end of the U-phase stator coil U2 and the winding start end of the stator coil U3, and the winding end end of the U-phase stator coil U3 and the winding start of the stator coil U3 Three arcuate U-phase conductive members 22 having a pitch angle of 75 ° connecting the ends are provided.

  The connecting member 300 is disposed on the same circumference as the arcuate U-phase conductive member 22 and includes one U-phase conductive member 52 that connects the winding start end of the U-phase stator coil U1 to the power source. I have.

  Further, the connecting member 300 is separated from the arcuate U-phase conductive member 22 in the axial direction of the stator 10 in an electrically insulated state (spaced upward in FIG. 14), and is the same as the arcuate U-phase conductive member 22 The winding end of the V-phase stator coil V1 and the winding start end of the stator coil V2, the winding end of the V-phase stator coil V2 and the winding of the stator coil V3 are arranged on the circumference of the diameter. Three arcuate V-phase conductive members 32 having a pitch angle of 75 ° are provided to connect the start end and the winding end of the V-phase stator coil V3 and the winding start end of the stator coil V4. The arcuate V-phase conductive member 32 is arranged with a 30 ° clockwise shift with respect to the arcuate U-phase conductive member 22.

  The connecting member 300 is disposed on the same circumference as the arcuate V-phase conductive member 32, and includes one V-phase conductive member 53 that connects the winding start end of the V-phase stator coil V1 to the power source. I have.

  Further, the connecting member 300 is separated from the arc-shaped V-phase conductive member 32 in the axial direction of the stator 10 in an electrically insulated state (separated upward in FIG. 14), and is the same as the arc-shaped V-phase conductive member 32. The winding end of the W-phase stator coil W1 and the winding start end of the stator coil W2, the winding end of the W-phase stator coil W2 and the winding of the stator coil W3 are arranged on the circumference of the diameter. Three arcuate W-phase conductive members 42 having a pitch angle of 75 ° are provided to connect the starting end and the winding end of the W-phase stator coil W3 and the winding start end of the stator coil W4. The arc-shaped W-phase conductive member 42 is arranged with a 30 ° clockwise shift with respect to the arc-shaped V-phase conductive member 32.

  The connecting member 300 is arranged on the same circumference as the arc-shaped W-phase conductive member 42, and includes one W-phase conductive member 54 that connects the winding start end of the W-phase stator coil W1 to the power source. I have.

  The arcuate U-phase, V-phase, and W-phase conductive members 22, 32, and 42 are collectively referred to as arc-shaped phase-specific conductive members. The arc-shaped phase-specific conductive members extend to the outer peripheral side at one end, and J-shaped coil connection terminals U2s to U4s, V2s to V4s, W2s for connecting the winding start end of the stator coil 12 by fusing welding or the like. ~ W4s, and J-shaped coil connection terminals U1e to U3e, V1e to V3e extending to the outer peripheral side and connecting the winding end of the stator coil 12 by fusing welding or the like at the other end. W1e to W3e.

  The U-phase, V-phase, and W-phase conductive members 52, 53, and 54 are J-shaped coil connection terminals U1s and V1s that extend to the outer peripheral side and connect the winding start end of the stator coil 12 by fusing welding. , W1s.

  The coil connection terminals are bent so as to be at the same height in the axial direction of the stator 10. The U-phase, V-phase, and W-phase conductive members 52, 53, and 54 have power connection terminals Ut to Wt that are connected to external power supply lines (see FIG. 13).

  Further, the connecting member 300 is separated from the arcuate W-phase conductive member 42 in the axial direction of the stator 10 in an electrically insulated state (separated upward in FIG. 14), and is the same as the arcuate W-phase conductive member 42. One arc-shaped common conductive member 50 having a pitch angle of 60 ° is provided on the circumference of the diameter and connecting the winding end ends of the stator coils U4, V4, W4 to the neutral point.

  The arc-shaped common conductive member 50 has three J-shaped coil connection terminals U4e to W4e extending to the outer peripheral side and connected to the end of winding of the stator coil 12 by fusing welding at both ends and the center. Have.

  The different-phase arc-shaped conductive members 22, 32, 42, the conductive members 52, 53, 54, and the arc-shaped common conductive member 50 are separated from each other in the axial direction of the stator 10. In the different arc-shaped phase-specific conductive members 22, 32, 42 and conductive members 52, 53, 54, between the arc-shaped phase-specific conductive member 42 and the arc-shaped common conductive member 50, and outside The portion 65 is filled with resin 65, and the coil connection terminal 300 and the power connection terminal are protruded to the outer peripheral side, and are integrally molded into a ring shape to form the stator coil connection member 300.

  Except for the above-described portion of the connection member 300 of the third embodiment, the connection member 100 is the same as that of the first embodiment.

  In the connection member 300 of the third embodiment, the phase-specific conductive members are connected in series, the energization current is reduced to reduce the cross-sectional area of the phase-specific conductive member, and the size of the entire connection member is reduced. In addition, by dividing the conductive member into a plurality of portions in the circumferential direction and forming an arc shape, the material yield of the conductive member can be improved as compared with the conventional C-shape. According to the connection member 300 of the third embodiment, a connection member having a three-phase Y connection (1 // Y connection) structure with a single circuit having a reduced size can be obtained.

  In the first to third embodiments, the description has been given by taking the three-phase 12 coil as an example, but the connection member of the present invention is not limited to the number of phases and the number of coils. Further, the winding start end and the winding end end of the stator coil may be reversed from those of the first to third embodiments.

  In addition, although the connection member of embodiment of this invention is a connection member of the stator coil of a rotary electric machine, this invention can be applied to the connection member of the stator coil of a linear motor.

  As described above, the stator coil connecting member according to the present invention is useful for connecting the stator coil of the rotating electrical machine.

It is a front view which shows Embodiment 1 of the connection member of the stator coil concerning this invention. It is a side view of a connection member. It is a perspective view which shows the state which attached the connection member to the rotary electric machine. FIG. 3 is an exploded perspective view of the connection member according to the first embodiment. It is a figure which shows the method of supporting an arc-shaped phase-specific electroconductive member within a resin molding die. FIG. 3 is a connection diagram of a stator coil by the connection member according to the first embodiment. It is a connection diagram of the stator coil by the conventional connection member. It is a connection diagram equivalent to the connection of the stator coil of Embodiment 1 which divided the connection of the conventional stator coil. 6 is a connection diagram of a stator coil by a connection member according to Embodiment 2. FIG. FIG. 6 is a front view showing a connection member according to a second embodiment. 6 is an exploded perspective view of a connection member according to Embodiment 2. FIG. FIG. 10 is a connection diagram of a stator coil by a connection member according to a third embodiment. FIG. 10 is a front view showing a connection member according to a third embodiment. FIG. 9 is an exploded perspective view of a connection member according to a third embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Stator 11 Stator core 12 Stator coil U1, U2, U3, U4 U phase coil V1, V2, V3, V4 V phase coil W1, W2, W3, W4 W phase coil 13 Coil bobbin 20, 22, 30, 32 , 40, 42 Arc-shaped phase-specific conductive members (conductive members)
50 Arc-shaped common conductive member (conductive member)
52 U-phase conductive member (conductive member)
53 V-phase conductive member (conductive member)
54 W-phase conductive member (conductive member)
60 Waveform detour part 65 Resin (holding member)
70, 80 Support pin 81 Small hole U1s to U4s, V1s to V4s, W1s to W4s Coil connection terminals U1e to U4e, V1e to V4e, W1e to W4e Coil connection terminals Ut, Vt, Wt Power connection terminals 100, 200, 300 Stator Connecting member 101 Support leg

Claims (7)

A stator coil connection member for connecting a plurality of stator coils of a rotating electrical machine via a conductive member ,
A plurality of arc-shaped phase-specific conductive members separated from each other for connecting stator coils of the same phase;
The in-phase arc-shaped phase-specific conductive members are separated in the axial direction of the rotating electrical machine in an electrically insulated state and separated from each other to connect different-phase stator coils; and
In a stator coil connection member comprising:
A plurality of corrugated detours bulging outward or inward are formed in the arc portion of each arc-shaped phase-specific conductive member, and the different-phase arc-shaped phase-specific conductive member is surrounded by the same-phase arc-shaped phase-specific conductive member. By shifting in the direction, at least one corrugated detour portion of one arcuate phase-specific conductive member is prevented from overlapping with the corrugated detour portion of another arc-shaped phase-conducting conductive member, and the convex portion of the one corrugated detour portion is The resin is filled between the arc-shaped phase-specific conductive members so as to be supported by the support pins provided in the resin molding die, and the arc-shaped phase-specific conductive members of the in-phase and the different phases are integrally molded with the resin. A stator coil connection member. A stator coil connection member for connecting a plurality of stator coils of a rotating electrical machine via a conductive member,
A plurality of arc-shaped phase-specific conductive members separated from each other for connecting stator coils of the same phase;
The in-phase arc-shaped phase-specific conductive members are separated in the axial direction of the rotating electrical machine in an electrically insulated state and separated from each other to connect different-phase stator coils; and
In a stator coil connection member comprising:
A plurality of corrugated detours bulging outward or inward are formed in the arc portion of each arc-shaped phase-specific conductive member, and the different-phase arc-shaped phase-specific conductive member is surrounded by the same-phase arc-shaped phase-specific conductive member. By shifting in the direction, the waveform detours of other arc-shaped phase-specific conductive members overlap with the arc-shaped portions of one arc-shaped phase-specific conductive member, and the waveform detours of other arc-shaped phase-specific conductive members detour The arc portion of one arc-shaped phase-specific conductive member is filled with resin between the arc-shaped phase-specific conductive members so as to be supported by a support pin provided in a resin molding die, and the in-phase and different-phase circles are filled. A stator coil connection member, wherein arc-shaped conductive members are integrally molded with resin. A stator coil connection member for connecting a plurality of stator coils of a rotating electrical machine via a conductive member,
Phased conductive members that are arranged on a circumference of the same diameter and connect stator coils of the same phase;
The phase-specific conductive members having the same phase are separated from each other in the axial direction of the rotating electrical machine in an electrically insulated state and arranged on the circumference of the same diameter, and the phase-specific conductive members connecting the stator coils of different phases ,
In a stator coil connection member comprising:
Wherein the arcuate portion of each phase another conductive member, by forming a plurality of waveform detour portion bulging outward or inward, shifted in the circumferential direction phase separate conductive members of said hetero phase against phase separate conductive members of the in-phase, At least one corrugated detour portion of one phase-specific conductive member is not overlapped with the corrugated detour portion of another phase-specific conductive member, and the convex portion of the one corrugated detour portion is a support pin provided in the resin molding die. A stator coil connection member , wherein a resin is filled between the phase-specific conductive members so as to be supported, and the phase-specific conductive members of the same phase and different phases are integrally molded with resin. A plurality of stator coils of the rotary electric machine, a connecting member of the stator coil to be connected through the conductive member,
Phased conductive members that are arranged on a circumference of the same diameter and connect stator coils of the same phase;
The phase-specific conductive members having the same phase are separated from each other in the axial direction of the rotating electrical machine in an electrically insulated state and arranged on the circumference of the same diameter, and the phase-specific conductive members connecting the stator coils of different phases ,
In a stator coil connection member comprising:
Wherein the arcuate portion of each phase another conductive member, by forming a plurality of waveform detour portion bulging outward or inward, shifted in the circumferential direction phase separate conductive members of said hetero phase against phase separate conductive members of the in-phase, resin arcuate portion of one phase separate conductive member, so the waveform detour of another phase separate conductive members overlap, the arcuate portion of one phase separate conductive members waveform detour of other by-phase conductive member bypassing A stator in which resin is filled between the respective phase-specific conductive members so as to be supported by a support pin provided in a molding die, and the phase-specific conductive members of the same phase and different phases are integrally molded with resin. Coil connection member. In the method of manufacturing a stator coil connection member that connects a plurality of stator coils of a rotating electrical machine via a conductive member,
At least one of the conductive members is formed by separating the conductive members in which a plurality of corrugated detours bulging outward or inward in the arc portion are spaced apart in the axial direction of the rotating electrical machine and shifted in the circumferential direction. In the resin molding die, the corrugated detour portion does not overlap with the corrugated detour portion of another conductive member, and the convex portion of one corrugated detour portion is supported by a support pin provided in the resin molding die. Installation process;
Injecting resin into the resin molding mold , filling the resin between the conductive members, and molding the conductive members together with resin;
The manufacturing method of the connection member of a stator coil characterized by including these. In the method of manufacturing a stator coil connection member that connects a plurality of stator coils of a rotating electrical machine via a conductive member,
In the arc portion of the one conductive member, the conductive members having a plurality of corrugated detour portions bulging outward or inward are separated from each other in the axial direction of the rotating electrical machine and shifted in the circumferential direction. The above-mentioned resin is formed so that the corrugated detours of the other conductive members overlap, and the arc portion of one conductive member detoured by the corrugated detours of the other conductive members is supported by a support pin provided in the resin molding die. A process of installing in a mold,
Injecting resin into the resin molding mold , filling the resin between the conductive members, and molding the conductive members together with resin;
The manufacturing method of the connection member of a stator coil characterized by including these. A rotating electrical machine comprising a stator coil connected by the stator coil connecting member according to any one of claims 1 to 4 .

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