JP6592284B2 - FEEDING RING AND METHOD FOR MANUFACTURING FEEDING RING - Google Patents

Description

  The present invention relates to a feed ring and a method for manufacturing the feed ring.

  2. Description of the Related Art Conventionally, an annular power supply ring that is connected for each phase to an annular stator in a rotating machine and that supplies current for each phase between the stator and an inverter is known. The power supply ring includes an annular bus ring (conductor) for each phase, a power supply terminal that is provided for each bus ring, and electrically connects the bus ring to the inverter side. A coil connection terminal to be electrically connected to the stator coil. For example, this type of power feeding ring is disclosed in Patent Document 1 below. The power supply ring of Patent Document 1 includes an annular conductive member that forms each bus ring, and an annular insulating holder that has a plurality of holding grooves in which the respective conductive members are held at intervals. Each conductive member and insulating holder are covered with an insulating resin layer while the conductive member is held by the insulating holder, and are completely embedded in the insulating resin layer.

JP 2003-134728 A

  By the way, in the conventional power supply ring, each conductive member is arranged with respect to the insulating holder so that the power supply terminal and the coil connection terminal are arranged as designed, and the relative positional relationship between the respective conductive members and After positioning each other so that a relative positional relationship between each conductive member and the insulating holder does not shift, each conductive member is covered with an insulating resin layer together with the insulating holder. For this reason, for example, when the relative positional relationship between the conductive members or the relative positional relationship between the conductive members and the insulating holder is detected at the inspection stage after the coating is formed, Cannot be corrected immediately. Therefore, at this time, a power feeding ring is newly manufactured using the conductive member taken out by removing the coating, or the defective insulating holder is sometimes discarded. As described above, the conventional power supply ring may cause a decrease in yield and reduce productivity. In the first place, the power supply ring requires a process of forming a coating by, for example, insert molding on each conductive member and the insulating holder, so that there is room for improving productivity.

  Therefore, an object of the present invention is to provide a feed ring and a feed ring manufacturing method capable of improving productivity.

In order to achieve the above object, a power supply ring according to the present invention is provided for each phase of a rotating machine having a plurality of stator coils arranged in an annular shape, and is disposed along the plurality of stator coils. A bus ring having one conductive member, and a plurality of holding members that are arranged at intervals along the circumferential direction of the bus ring and hold the bus rings in a bundle. Is made of a plate material, and has a common-phase power supply terminal that is electrically connected to the power supply side, and a plurality of coil connection terminals that are electrically connected to the stator coils of the same phase, and the bus ring has the feeding terminal and the coil connecting terminal portions coated insulating coating except for in the conductive member, relative to one of said stator coil The two coil connection terminals that are spaced apart in the circumferential direction are electrically connected, and the holding member is between the two coil connection terminals that are electrically connected to one stator coil. It is characterized by being arranged in .

  Here, the coating is preferably a UV curable coating.

  Moreover, it is desirable that the holding member has a fixing portion fixed to a stator of the rotating machine.

In order to achieve the above object, a method for manufacturing a power feeding ring according to the present invention is a component provided with at least one bus ring for each phase of a rotating machine having a plurality of stator coils arranged in an annular shape. A step of forming a temporary shape of a conductive member made of a plate material disposed along the plurality of stator coils, a power supply terminal of the conductive member for electrically connecting the bus ring to a power supply side, and the bus An insulating material is applied to the conductive member except for the coil connection terminal of the conductive member that electrically connects the ring to the stator coils of the same phase, and an insulating coating is formed on the conductive member. A step, a step of forming the temporary-shaped conductive member on which the coating is formed into a final shape, and a plurality of holding members arranged at intervals in the circumferential direction of the bus ring Therefore, comprises a step of holding a bundle of each of the bus rings collectively, and in the step of holding each of the bus rings by the holding member, it is electrically connected to one of the stator coil 2 The holding member is arranged between the two coil connection terminals, and the holding member is provided for each stator coil .

  Here, in the coating forming step, an insulating UV curable resin is applied to a portion of the conductive member excluding the power supply terminal and the coil connection terminal, and ultraviolet light is applied to the applied UV curable resin. Irradiation is desirable.

  In the power supply ring according to the present invention, the conductive member has a power supply terminal and a coil connection terminal formed without going through the coating stripping process, and the coating is formed at other locations of the conductive member. Moreover, the manufacturing method of the power feeding ring according to the present invention can expose the power feeding terminal and the coil connection terminal of the conductive member to the outside without going through the stripping process, and the power feeding terminal and the coil connection terminal. A coating can be applied to the portion excluding. Further, the power supply ring and the method for manufacturing the power supply ring according to the present invention are such that the bus rings are individually coated, so that an insulating holder as in the prior art for holding them while covering them all around is not required. And a coating formed on the holding member by, for example, insert molding is not required. Still further, the power feeding ring and the method for manufacturing the power feeding ring according to the present invention include, for example, a relative positional relationship between each bus ring and a relative positional relationship between the bus ring and the holding member in the inspection stage after the coating is formed. Even if a deviation is detected, these parts can be used again to recreate the correct feeding ring. From the above, the power supply ring and the method for manufacturing the power supply ring can improve the productivity, thereby reducing the manufacturing cost.

FIG. 1 is a perspective view showing the power supply ring of the embodiment together with a stator. FIG. 2 is a perspective view illustrating a state in which the power supply ring of the embodiment is assembled to the stator. FIG. 3 is an exploded perspective view in which the power supply ring of the embodiment is disassembled for each bus ring. FIG. 4 is an exploded perspective view illustrating the U-phase bus ring. FIG. 5 is an exploded perspective view for explaining the V-phase bus ring. FIG. 6 is an exploded perspective view for explaining the W-phase bus ring. FIG. 7 is an exploded perspective view illustrating the neutral phase bus ring. FIG. 8 is an exploded perspective view in which the holding member is disassembled from the power supply ring of the embodiment. FIG. 9 is a perspective view showing the holding member. FIG. 10 is a front view showing the holding member. FIG. 11 is a partial cross-sectional view of the holding member as viewed from the side.

  Hereinafter, embodiments of a feed ring and a feed ring manufacturing method according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment.

[Embodiment]
One embodiment of a feed ring and a feed ring manufacturing method according to the present invention will be described with reference to FIGS.

  Reference numeral 1 in FIGS. 1 and 2 represents a power feeding ring of the present embodiment. The power feeding ring 1 is a power feeding structure that supplies current for each phase of the rotating machine between a stator 100 of the rotating machine mounted on the vehicle and a power source (not shown) such as a secondary battery. For example, when the rotating machine is operating as an electric motor, the electric power sent from the inverter on the secondary battery side is supplied to the rotating machine via the feed ring 1. Further, when the rotating machine is operating as a generator, such as during regeneration, the power generated by the rotating machine is supplied to the inverter via the feed ring 1, and the secondary battery is charged via this inverter. The

  Here, the stator 100 includes a stator core 101. The stator core 101 has a plurality of teeth 101a arranged in an annular shape (that is, in the circumferential direction) at intervals. Each of the teeth 101a forms an annular tooth group. The stator core 101 further includes an annular body 101b that integrally holds the teeth 101a from the outer peripheral side of the teeth group. The illustrated stator core 101 includes an annular annular portion, and a plurality of teeth portions that protrude from the inner peripheral side of the annular portion toward the annular center and in a circumferential direction of the annular portion with a space therebetween. It is a laminated body of the plate-shaped stator core plate which has. In the stator core 101, the laminated portion of the teeth portion forms, for example, a rectangular tooth 101a, and the laminated portion of the annular portion forms a cylindrical annular body 101b. Stator 100 includes a plurality of stator coils 102 wound around respective teeth 101a. The respective stator coils 102 are arranged side by side in an annular shape (that is, in the circumferential direction) in accordance with the respective teeth 101a, thereby forming an annular stator coil group. The combination of the teeth 101a and the stator coil 102 of each phase of the rotating machine (three phases of U phase, V phase, and W phase in this case) is arranged at four positions with a 90 degree shift.

  The feed ring 1 is formed in an annular shape in accordance with the annular stator 100. The power supply ring 1 according to the present embodiment is disposed concentrically on the annular body 101b of the stator core 101, and is illustrated as being attached to the annular body 101b. However, the arrangement of the feed ring 1 is not limited to this example. For example, the feed ring 1 may be disposed concentrically on the stator coil group.

  In the following, unless otherwise specified, the direction along the axis of the annular central axis is referred to as the axial direction, the direction around the axis centered on the axis is referred to as the circumferential direction, and the direction perpendicular to the axis is the diameter. It is called direction.

  The feed ring 1 includes conductors (hereinafter referred to as “bus rings”) 10 u, 10 v, 10 w for each phase of a rotating machine arranged along a plurality of stator coils 102, and the bus rings 10 u, 10 v, 10 w. Are electrically connected to an inverter (not shown) on the power source side, and the metal power supply terminals 21u, 21v, 21w for each phase and the bus rings 10u, 10v, 10w are connected to the stator coils 102 in the same phase. And a plurality of metal coil connection terminals 22 to be electrically connected (FIG. 3).

  Furthermore, the feed ring 1 of the present embodiment also includes a neutral phase bus ring (hereinafter referred to as “neutral phase bus ring”) 10 n. The neutral phase bus ring 10n is arranged along a plurality of stator coils 102 arranged in an annular shape, like the bus rings 10u, 10v, and 10w. In the power supply ring 1, a plurality of coil connection terminals 22 are also provided in the neutral phase bus ring 10 n as in the case of the bus rings 10 u, 10 v, 10 w. Also in the neutral phase bus ring 10n, the coil connection terminal 22 may be prepared separately from the neutral phase bus ring 10n and electrically connected to the neutral phase bus ring 10n. Alternatively, it may be integrated with the neutral phase bus ring 10n.

  The power supply terminals 21u, 21v, and 21w of the bus rings 10u, 10v, and 10w may be directly connected to the connection terminal on the power supply side. In this case, one of the power supply terminals 21u, 21v, 21w and the connection terminal on the power source side is a male terminal, and the other is a female terminal connected to the male terminal. Further, a connection terminal on the power supply ring 1 side may be interposed between the power supply terminals 21u, 21v, 21w and the connection terminal on the power supply side. In this case, the connection terminal on the power supply ring 1 side connected to the power supply terminals 21u, 21v, and 21w is connected to the connection terminal on the power supply side. In this case, one of the connection terminal on the power feeding ring 1 side and the connection terminal on the power supply side is a male terminal, and the other is a female terminal connected to the male terminal.

  The coil connection terminals 22 of the bus rings 10u, 10v, 10w are electrically connected to one end of each stator coil 102 having the same phase. On the other hand, the coil connection terminal 22 of the neutral phase bus ring 10n is electrically connected to the other ends of the stator coils 102 of the U phase, the V phase, and the W phase. The coil connection terminal 22 and the stator coil 102 may be connected directly by welding or the like. Moreover, you may perform these connections indirectly by interposing a connection terminal, an electric wire, etc. The coil connection terminals 22 may have different shapes for each of the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n. In the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n, You may employ | adopt the same or different shape suitably for every connection location.

  Each of the bus rings 10u, 10v, and 10w includes at least one conductive member 11 disposed along the circumferential direction (that is, the circumferential direction of the annular stator coil group), and power supply terminals 21u, 21v in the conductive member 11. , 21w and the insulating coating 12 applied except for the coil connection terminal 22 (FIGS. 3 to 6). Further, the neutral phase bus ring 10n includes at least one conductive member 11 arranged along the circumferential direction, and an insulating coating 12 applied to the conductive member 11 except for the coil connection terminal 22. (FIGS. 3 and 7).

  In the conductive member 11 of the present embodiment, power supply terminals 21u, 21v, 21w and a coil connection terminal 22 are integrally formed. The conductive member 11 of the present embodiment is obtained by cutting and bending a metal plate material by press molding, and may be referred to as a bus bar. In this embodiment, in order to improve the assembly workability to the stator 100, each bus ring 10u, 10v, 10w and the neutral phase bus ring 10n are made flexible. For this reason, in consideration of this point, it is desirable to use a conductive member 11 having a thickness that enables deformation such as bending when assembled to the stator 100.

  As the material of the covering 12, an insulating material such as a synthetic resin is used. The coating 12 of the present embodiment uses a UV curable coating made of an insulating UV curable resin. In this embodiment, a UV curable resin is applied to the outer wall surface of the conductive member 11 excluding the power supply terminals 21u, 21v, 21w and the coil connection terminal 22, and the UV curable resin is irradiated with ultraviolet rays to form a coating ( UV curable coating) 12 is formed. It is desirable that the coating 12 has flexibility so as not to hinder the flexibility of the conductive member 11. Thereby, the feeding ring 1 of the present embodiment has high followability with respect to the shape of the stator 100, and can improve the workability of assembling to the stator 100. Moreover, in this electric power feeding ring 1, since the thickness of the coating | cover 12 can be made thinner than a heat-shrinkable tube etc. by using the coating | coated 12 formed through an application | coating process, size reduction and weight reduction of a physique can be carried out. It becomes possible.

As shown in FIG. 4, the U-phase bus ring 10u of the present embodiment is composed of first to third conductors 10u ₁ , 10u ₂ , 10u ₃ , and therefore has three conductive members 11u. Yes. Each of the first to third conductors 10u ₁ , 10u ₂ , 10u ₃ includes one conductive member 11u and a coating 12u formed on a predetermined portion of the conductive member 11u through a material application step, Have The conductive member 11u includes a base portion 11x serving as a main portion, and two coil connection terminals 22 protruding from the base portion 11x. The base 11x is formed by bending a rod-shaped plate material in an arc shape along the circumferential direction. The coil connection terminals 22 are respectively disposed at both ends in the longitudinal direction (circumferential direction) of the base portion 11x. Each of the coil connection terminals 22 is a piece projecting from the both ends in the same direction in the axial direction, and is electrically connected to the stator coil 102 having the same phase. Furthermore, for the first conductor 10u ₁ of the conductive member 11u, also has power supply terminals 21u which projects from the base portion 11x. The power supply terminal 21u is a piece projecting outward in the radial direction. The covering 12u is formed on the outer wall surface of the base portion 11x.

The first to third conductors 10u ₁ , 10u ₂ , 10u ₃ are arranged concentrically and arranged in the circumferential direction. In the bus ring 10u, the coil connection terminals 22 of the first one of the conductors 10u ₁ (counterclockwise direction in the plane of FIG. 4), second conductor 10u ₂ of the other (the plane of the clockwise direction of FIG. 4 ) Is connected to one stator coil 102 having the same phase. In the stator coil 102 has one end electrically connected to the first one of the coil connection terminals 22 of the conductor 10u _1, the other end to the second other coil connection terminals 22 of the conductor 10u ₂ Electrically connected. Furthermore, in the bus ring 10u, a first other coil connection terminals 22 of the conductor 10u _1, a third one of the coil connection terminals 22 of the conductor 10u _3, to a different one of the stator coils 102 of the same phase Connecting. In the stator coil 102 has one end electrically connected to the first other coil connection terminals 22 of the conductor 10u _1, the other end to the third one of the coil connection terminals 22 of the conductor 10u ₃ Electrically connected. In the first to third conductors 10u ₁ , 10u ₂ , 10u ₃ , the coil connection terminals 22 are connected to each other so that the connection relationship between the coil connection terminals 22 and the stator coil 102 is established. It arrange | positions in the radial direction outer side of the stator coil 102 of an in-phase. Therefore, the bus ring 10u is formed in a C shape by the first to third conductors 10u ₁ , 10u ₂ , 10u ₃ (FIG. 3).

As shown in FIG. 5, the V-phase bus ring 10v according to the present embodiment includes first to third conductors 10v ₁ , 10v ₂ , and 10v ₃ , and thus includes three conductive members 11v. Yes. The first to third conductors 10v ₁ , 10v ₂ , and 10v ₃ are each composed of one conductive member 11v and a predetermined portion of the conductive member 11v, like the U-phase bus ring 10u. And a coating 12v formed through the coating process. The conductive member 11v includes a base portion 11x similar to the U-phase bus ring 10u and two coil connection terminals 22. Furthermore, for the first conductive member 11v of the conductor 10v _1, also has power supply terminals 21v which projects from the base portion 11x. The power supply terminal 21v is a piece protruding outward in the radial direction, like the U-phase bus ring 10u. The covering 12v is formed on the outer wall surface of the base portion 11x.

The first to third conductors 10v ₁ , 10v ₂ , 10v ₃ are arranged concentrically and arranged in the circumferential direction. In the bus rings 10v, the coil connection terminals 22 of the first one of the conductor 10v ₁ (counterclockwise direction in the plane of FIG. 5), second conductor 10v ₂ of the other (the plane of the clockwise direction of FIG. 5 ) Is connected to one stator coil 102 having the same phase. In the stator coil 102 has one end electrically connected to the first one of the coil connection terminals 22 of the conductor 10v _1, the other end to the second other coil connection terminals 22 of the conductor 10v ₂ Electrically connected. Furthermore, in the bus rings 10v, the first other coil connection terminals 22 of the conductor 10v _1, a third one of the coil connection terminals 22 of the conductor 10v _3, to a different one of the stator coils 102 of the same phase Connecting. In the stator coil 102 has one end electrically connected to the first other coil connection terminals 22 of the conductor 10v _1, the other end to the third one of the coil connection terminals 22 of the conductor 10v ₃ Electrically connected. In the first to third conductors 10v ₁ , 10v ₂ , and 10v ₃ , the coil connection terminals 22 are connected to each other so that the connection relationship between the coil connection terminal 22 and the stator coil 102 is established. It arrange | positions in the radial direction outer side of the stator coil 102 of an in-phase. Therefore, the bus ring 10v is formed in a C shape by the first to third conductors 10v ₁ , 10v ₂ , 10v ₃ (FIG. 3).

As shown in FIG. 6, the W-phase bus ring 10w according to the present embodiment includes first to third conductors 10w ₁ , 10w ₂ , and 10w ₃ , and thus includes three conductive members 11w. Yes. Each of the first to third conductors 10w ₁ , 10w ₂ , and 10w ₃ is composed of one conductive member 11w and a predetermined portion of the conductive member 11w, like the U-phase bus ring 10u. And a coating 12w formed through the coating process. The conductive member 11w has a base portion 11x similar to the U-phase bus ring 10u and two coil connection terminals 22. Furthermore, for the first conductor 10w ₁ conductive member 11 w, also has power supply terminals 21w which projects from the base portion 11x. The power feeding terminal 21w is a piece protruding outward in the radial direction, like the U-phase bus ring 10u. The covering 12w is formed on the outer wall surface of the base portion 11x.

The first to third conductors 10w ₁ , 10w ₂ , 10w ₃ are arranged concentrically and arranged in the circumferential direction. In the bus ring 10w, a coil connection terminal 22 of the first one of the conductor 10w ₁ (counterclockwise direction in the plane of FIG. 6), the sheet of the clockwise direction of the second other of the conductor 10w ₂ (FIG. 6 ) Is connected to one stator coil 102 having the same phase. In the stator coil 102 has one end electrically connected to the first one of the coil connection terminals 22 of the conductor 10w _1, the other end to the second other coil connection terminals 22 of the conductor 10w ₂ Electrically connected. Furthermore, in the bus ring 10w, the first other coil connection terminals 22 of the conductor 10w _1, a third one of the coil connection terminals 22 of the conductor 10w _3, to a different one of the stator coils 102 of the same phase Connecting. In the stator coil 102 has one end electrically connected to the first other coil connection terminals 22 of the conductor 10w _1, the other end to the third one of the coil connection terminals 22 of the conductor 10w ₃ Electrically connected. In the first to third conductors 10w ₁ , 10w ₂ , and 10w ₃ , the coil connection terminals 22 are connected to each other so that the connection relationship between the coil connection terminals 22 and the stator coil 102 is established. It arrange | positions in the radial direction outer side of the stator coil 102 of an in-phase. Accordingly, the bus ring 10w forms a C-shape by the first to third conductor _{10w 1,} 10w 2, 10w ₃ (Figure 3).

As shown in FIG. 7, the neutral phase bus ring 10n of the present embodiment is composed of first and second conductors 10n ₁ and 10n ₂ and therefore has two conductive members 11n. The first and second conductors 10n ₁ and 10n ₂ are each made of one conductive member 11n and a material coating step on a predetermined portion of the conductive member 11n, like the U-phase bus ring 10u and the like. And a coating 12n formed through the above. The conductive member 11n has a base portion 11x similar to the U-phase bus ring 10u and the like. Further, the conductive member 11n has three coil connection terminals 22 similar to the U-phase bus ring 10u and the like. The three coil connection terminals 22 are individually electrically connected to the U-phase, V-phase, and W-phase stator coils 102 that are continuous in the circumferential direction. The coating 12n is formed on the outer wall surface of the base portion 11x.

The first and second conductors 10n ₁ and 10n ₂ are arranged concentrically and side by side in the circumferential direction. In this neutral phase bus ring 10n, the coil connection terminals 22 of the first one of the conductor 10n ₁ (counterclockwise direction in the plane of FIG. 7), the second conductor 10n ₂ other (in the plane of FIG. 7 The coil connection terminal 22 in the clockwise direction) is connected to a certain stator coil 102. In the stator coil 102 has one end electrically connected to the first one of the coil connection terminals 22 of the conductor 10n _1, the other end to the second other coil connection terminals 22 of the conductor 10n ₂ Electrically connected. In the first and second conductors 10n ₁ and 10n ₂ , each coil connection terminal 22 is connected to the stator coil 102 to be connected so that such a connection relationship between the coil connection terminal 22 and the stator coil 102 is established. It arranges on the outside of the radial direction of.

  In the feed ring 1, the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n are stacked along the radial direction (FIG. 8). The power supply ring 1 is provided with a holding member 30 for maintaining the stacked state. A plurality of the holding members 30 are arranged at intervals in the circumferential direction, and hold the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n in a bundle.

  Each holding member 30 is arranged side by side near the coil connection terminal 22. Two coil connection terminals 22 are arranged on the outer side in the radial direction of one stator coil 102 with an interval in the circumferential direction. For this reason, the holding member 30 of this embodiment is arrange | positioned between the two coil connection terminals 22 provided adjacently. In other words, in this example, the holding member 30 is arranged for each stator coil 102 in the vicinity of the stator coil 102. In the power supply ring 1, the holding member 30 is disposed near the coil connection terminal 22, and therefore, after being assembled to the stator 100, for example, between the coil connection terminal 22 and the stator coil 102 due to input of vibration or the like. Relative movement can be suppressed. Therefore, the power supply ring 1 can maintain the electrical connection between the coil connection terminal 22 and the stator coil 102 and improve the durability. In addition, in the power supply ring 1, the holding members 30 are spaced apart from each other in the circumferential direction, so that the bus rings 10 u, 10 v, and 10 w are neutral with each other between adjacent holding members 30. The followability to the shape of the stator 100 due to the flexibility of the phase bus ring 10n can be exhibited, and the workability of assembling to the stator 100 can be improved.

  Here, in the power feeding ring 1 of the present embodiment, depending on the position in the circumferential direction, there is a place where all of the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n are stacked, and one of them is included. There are places where only or only two or only three are stacked. For this reason, the holding member 30 may have a different shape for each place, assuming that the holding member 30 has a holding part corresponding to each place (that is, a holding part corresponding to the number of bus rings to be held). . However, in the present embodiment, the holding members 30 having the same shape are used so that they can be held anywhere regardless of the number of bus rings to be held. The holding member 30 can hold a maximum of four layers of bus rings (bus rings 10u, 10v, 10w and neutral phase bus ring 10n). The power supply ring 1 of the present embodiment can reduce the cost by sharing the holding member 30 as described above.

  Specifically, the holding member 30 is formed of an insulating material such as synthetic resin, and includes a first holding body 31 and a second holding body 32 (FIGS. 9 to 11). The first holding body 31 has an opening 31a directed in the axial direction in which the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n can be inserted. The second holding body 32 also serves to close the opening 31a. In the holding member 30, when the opening 31a is blocked by the second holding body 32, a rectangular internal space is formed (FIGS. 9 and 11). The bus rings 10u, 10v, 10w and the neutral phase bus ring 10n are inserted into the internal space from the opening 31a and held in the internal space of the arc.

  The first holding body 31 and the second holding body 32 have elasticity, for example, so that the opening 31a can be exposed or closed. The holding member 30 is provided with a lock mechanism 33 for maintaining the state in which the opening 31a is closed by the second holding body 32 (FIGS. 9 and 11). The lock mechanism 33 is interposed between the first holding body 31 and the second holding body 32, and the first engagement portion 33 a on the first holding body 31 side and the second engagement on the second holding body 32 side. And a joint portion 33b. In this illustration, by inserting the first engagement portion 33a as a claw portion into the second engagement portion 33b which is a through hole, and locking the first engagement portion 33a to the periphery of the second engagement portion 33b, The first holding body 31 and the second holding body 32 are held in a state of closing the opening 31a.

  Further, the holding member 30 is provided with a fixing portion 34 for fixing the power feeding ring 1 to the stator 100. The fixing portion 34 is disposed at the end on the opposite side to the opening 31a. The fixing portion 34 is a protruding portion protruding from the first holding body 31 and is press-fitted into the through hole 101c of the stator core 101 (FIGS. 1 and 11). In this example, a through hole 101 c is formed for each holding member 30 with respect to the annular body 101 b of the stator core 101. In the power supply ring 1 of the present embodiment, positioning with respect to the stator 100 is facilitated by the fixing portions 34 of the respective holding members 30 disposed in the vicinity of the coil connection terminals 22, and assembling workability with respect to the stator 100 is improved. Can do.

  Next, the manufacturing method of this electric power feeding ring 1 is demonstrated.

  In the present embodiment, the provisional shape forming step of the conductive member 11, the covering 12 forming step, the forming step for the provisionally shaped conductive member 11 after covering, the bus rings 10 u, 10 v, 10 w by the holding member 30, Holding the neutral phase bus ring 10n.

  The temporary shape of the conductive member 11 is the shape of the conductive member 11 before the coating 12 is applied to the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n described above. Therefore, the provisional shape forming step of the conductive member 11 refers to a step of forming the conductive member 11 into such a shape. In this forming step, for example, processing (only punching from a plate material) before bending is performed. Accordingly, the temporary conductive member 11 includes a flat base portion 11x, and power supply terminals 21u, 21v, 21w and a coil connection terminal 22 protruding from the base portion 11x on the same plane. The flat base portion 11x is a temporary shape before being bent into an arc shape. The power supply terminals 21u, 21v, 21w and the coil connection terminal 22 on the same plane as the base 11x are temporary shapes before being bent from the base on the base 11x side.

  The process of forming the covering 12 is a process in which an insulating material is applied to a portion (base portion 11x) of the temporary conductive member 11 excluding the power supply terminals 21u, 21v, and 21w and the coil connection terminal 22, and the conductive member 11 is insulative. It is the process of forming the coating 12 of the above. In the bus rings 10u, 10v, 10w, for example, the power supply terminals 21u, 21v, 21w and the coil connection terminal 22 are masked, and then an insulating material is applied to the conductive member 11 (11u, 11v, 11w). Thereby, in bus ring 10u, 10v, 10w, an insulating material is apply | coated to the base 11x. Thereafter, in the bus rings 10u, 10v, and 10w, the applied insulating material is cured by a method according to the insulating material, whereby the power supply terminal in the temporary conductive member 11 (11u, 11v, and 11w). The covering 12 (12u, 12v, 12w) is formed on the portion (base 11x) excluding 21u, 21v, 21w and the coil connection terminal 22. In addition, in the neutral phase bus ring 10n in the temporary shape, for example, as with the bus rings 10u, 10v, 10w, the coil connection terminal 22 is masked, and then an insulating material is applied to the conductive member 11 (11n). Apply. Thereby, in the neutral phase bus ring 10n, the insulating material is applied to the base portion 11x. Thereafter, in this neutral phase bus ring 10n, the applied insulating material is cured by a method according to the insulating material, thereby removing the coil connection terminal 22 in the conductive member 11 (11n) (base portion). 11x) is formed with a coating 12 (12n). For example, when the insulating material is the above-described UV curable resin, the UV curable resin applied to the conductive member 11 is irradiated with ultraviolet rays to be cured to form a UV curable coating.

  The forming process for the provisional-shaped conductive member 11 after coating is a process for forming the temporary-shaped conductive member 11 into a final shape. In this molding step, bending is performed on the temporary conductive member 11 on which the coating 12 is formed. Specifically, in this forming step, the flat base portion 11x is bent into an arc shape along the circumferential direction. Further, in this forming step, the power supply terminals 21u, 21v, 21w and the coil connection terminal 22 are bent from the base on the base 11x side to be formed into a final shape. Note that at least one or all of these bending processes may be performed before the step of forming the coating 12.

  The steps of holding the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n by the holding member 30 are arranged such that the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n are spaced apart from each other in the circumferential direction. A plurality of holding members 30 that are bundled and held together. In this holding step, the predetermined positions of the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n are inserted into the holding member 30 from the opening 31a. The predetermined position is a position held by the holding member 30. This insertion operation is performed at each predetermined position. In this holding process, the bus ring 10u, 10v, 10w to be held and the neutral phase bus ring 10n are all inserted in the holding members 30 at the predetermined positions, and then the opening 31a is closed with the second holding body 32. Then, the lock mechanism 33 is operated. In this holding step, by operating the lock mechanisms 33 of all the holding members 30, the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n are held together by the holding members 30.

  As described above, in the method of manufacturing the power supply ring 1 according to the present embodiment, the coating 12 is formed by coating. Therefore, the power supply terminals 21u, 21v, and 21w and the coil in the conductive member 11 can be formed without going through the coating stripping process. The connection terminal 22 can be exposed to the outside, and the coating 12 can be applied to portions other than the power supply terminals 21u, 21v, 21w and the coil connection terminal 22. That is, in the power supply ring 1 of the present embodiment, the conductive member 11 has the power supply terminals 21u, 21v, 21w and the coil connection terminal 22 formed without going through the coating stripping process, and that of the conductive member 11 A coating 12 is formed at a place other than. For this reason, the manufacturing method of the feed ring 1 and the feed ring 1 according to the present embodiment increases the production efficiency and improves the productivity by eliminating the coating stripping process while ensuring the feed performance and the insulation performance. be able to.

  Further, the power supply ring 1 and the method for manufacturing the power supply ring 1 of the present embodiment are such that the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n are individually covered, so that they are respectively covered over the entire circumference. There is no need for a conventional insulating holder for holding, and there is no need to cover the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n together with the holding member 30. For this reason, this power supply ring 1 and the manufacturing method of the power supply ring 1 do not require the coating formed by, for example, insert molding on the bus rings 10u, 10v, 10w, the neutral phase bus ring 10n, and the holding member 30. Therefore, the power supply ring 1 and the method for manufacturing the power supply ring 1 can improve productivity. In addition, the power supply ring 1 and the method for manufacturing the power supply ring 1 are, for example, in the inspection stage after the coating 12 is formed, and the relative positional relationship between the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n and the buses. Even when the relative positional relationship between the rings 10u, 10v, 10w and the neutral phase bus ring 10n and the holding member 30 is detected, the correct feeding ring 1 can be re-made by using these components again. For this reason, since this power supply ring 1 and the method for manufacturing the power supply ring 1 can suppress a decrease in yield, productivity can be improved. The power supply ring 1 and the method for manufacturing the power supply ring 1 do not require an insulating holder as described above, and are partially fixed by a plurality of holding members 30, so that the weight can be reduced.

  As described above, the power supply ring 1 and the method for manufacturing the power supply ring 1 according to the present embodiment can improve the productivity, so that the manufacturing cost can be reduced.

  By the way, in the above illustration, bus ring 10u, 10v, 10w and neutral phase bus ring 10n are laminated | stacked according to the plate | board thickness direction of the electrically-conductive member 11 to radial direction. The feed ring 1 of the present embodiment is not necessarily limited to such a laminated form. For example, the bus rings 10u, 10v, and 10w and the neutral phase bus are formed by matching the plate thickness direction of the conductive member 11 with the axial direction. The ring 10n may be laminated. Even in such a laminated form, the power feeding ring 1 and the method for manufacturing the power feeding ring 1 of the present embodiment can obtain the same effects as the above illustration.

1 supply ring 10u U bus ring 10v V-phase bus ring 10w W bus rings 10n neutral phase bus ring of phase of phase _{10u 1, 10v 1, 10w 1} , 10n 1 first conductor 10u _{2, 10v 2,} 10w ₂ , 10n ₂ Second conductor 10u ₃ , 10v ₃ , 10w ₃ Third conductor 11, 11u, 11v, 11w, 11n Conductive member 11x Base part 12, 12u, 12v, 12w, 12n Covering 21u, 21v, 21w Feeding terminal 22 Coil connection terminal 30 Holding member 34 Fixed part 100 Stator 101 Stator core 101a Teeth 101b Annular body 101c Through-hole 102 Stator coil

Claims (5)

A bus ring provided for each phase of a rotating machine having a plurality of stator coils arranged in an annular shape, and having at least one conductive member arranged along the plurality of stator coils;
A plurality of holding members that are arranged at intervals along the circumferential direction of the bus ring and hold the bus rings in a bundle.
With
The conductive member is made of a plate material, and has an in-phase power supply terminal that is electrically connected to the power supply side, and a plurality of coil connection terminals that are electrically connected to the stator coils of the same phase. ,
The bus ring has an insulating coating applied to a portion of the conductive member excluding the power supply terminal and the coil connection terminal ,
For the one stator coil, the two coil connection terminals arranged at intervals in the circumferential direction are electrically connected,
The power supply ring , wherein the holding member is disposed between two coil connection terminals to be electrically connected to one stator coil .   The power supply ring according to claim 1, wherein the coating is a UV curable coating.   The power supply ring according to claim 1, wherein the holding member has a fixing portion fixed to a stator of the rotating machine. At least one component provided on a bus ring for each phase of a rotating machine having a plurality of stator coils arranged side by side in an annular shape, and a temporary conductive member made of a plate material arranged along the plurality of stator coils Forming the shape;
Excluding the power supply terminal of the conductive member that electrically connects the bus ring to the power supply side and the coil connection terminal of the conductive member that electrically connects the bus ring to the stator coils of the same phase. Applying an insulating material to the conductive member, and forming an insulating coating on the conductive member;
Forming the temporary shape conductive member formed with the coating into a final shape;
A step of bundling and holding the respective bus rings together by a plurality of holding members arranged at intervals in the circumferential direction of the bus rings;
Have
In the step of holding each bus ring by the holding member, the holding member is disposed between the two coil connection terminals to be electrically connected to one stator coil, and the holding member is A method of manufacturing a feed ring, wherein the method is provided for each stator coil .   In the coating forming step, an insulating UV curable resin is applied to a portion of the conductive member excluding the power supply terminal and the coil connection terminal, and the applied UV curable resin is irradiated with ultraviolet rays. The method for manufacturing a feed ring according to claim 4, wherein:

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