JP6585395B2 - 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. The bus ring includes an annular conductive member and an insulating coating that covers the conductive member. For example, this type of power feeding ring is disclosed in Patent Document 1 below.

JP 2009-261083 A

  By the way, in the conventional power supply ring, when the power supply terminal and the coil connection terminal are electrically connected to the bus ring, the covering of the connection position in the bus ring is peeled off, and power is supplied to the exposed conductive member. Attach terminals and coil connection terminals. Therefore, the feed ring has room for improving its 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 includes a bus ring for each phase of the rotating machine arranged along a plurality of stator coils arranged in an annular shape in the stator of the rotating machine, and the bus be molded as a separate part from the ring, and the power supply terminals of each phase for electrically connecting the bus ring relative to the power source side, wherein the bus ring is formed as a separate component, each said bus ring-phase A plurality of coil connection terminals that are electrically connected to the stator coil, and spaced apart from each other along the circumferential direction of the bus ring and stacked along the annular axial direction. and a plurality of holding members for holding a bundle of the bus rings collectively the bus ring, along the circumferential direction of the stator coil group including a plurality of said stator coil At least one conductive member is disposed, anda coating of insulating coated except for electrical connection position between the power supply terminal and the coil connecting terminal in said conductive member, said holding member, Provided between the first holding body formed with an opening through which each of the bus rings can be inserted, the second holding body capable of closing the opening, and the first holding body and the second holding body. A hinge mechanism, and a lock mechanism that is provided between the first holding body and the second holding body and maintains the state in which the opening by the second holding body is closed, and the second holding It has a holding part for each phase that is formed inside and holds the bus ring when the opening is closed by a body .

  In addition, each of the bus rings is preferably held together by a plurality of holding members that are spaced apart from each other.

  The holding member preferably has a fixing portion fixed to the stator.

In order to achieve the above object, a method for manufacturing a feed ring according to the present invention includes a bus for each phase of the rotating machine arranged along a plurality of stator coils arranged in an annular shape in a stator of the rotating machine. A step of forming a conductive member of the ring, a connection position of a power supply terminal for electrically connecting the bus ring to the power supply side, and a coil for electrically connecting the bus ring to the stator coils of the same phase Excluding the connection position of the connection terminal, an insulating material is applied to the conductive member to form an insulating coating on the conductive member, and the power supply terminal is electrically connected to the connection position of the power supply terminal in the bus ring. It was connected, and a step of electrically connecting the coil connection terminal at the connection position of the coil connection terminals in the bus ring, a circumferential direction of the bus ring A plurality of retaining members spaced had, and a step of holding a bundle of each of the bus rings are stacked in the axial direction of the annular collectively by the holding member In the step of holding each bus ring, for each of the holding members, the bus ring to be held is inserted from the opening of the first holding body, and the second holding is connected to the first holding body through a hinge portion. By closing the opening with a body, a holding portion for each phase that holds the bus ring is formed, and a lock mechanism provided between the first holding body and the second holding body is operated to (2) The state in which the opening by the holding body is closed is maintained .

In order to achieve the above object, a method for manufacturing a feed ring according to the present invention includes a bus for each phase of the rotating machine arranged along a plurality of stator coils arranged in an annular shape in a stator of the rotating machine. A connection position of a power supply terminal for electrically connecting the bus ring to the power source side with respect to a member which is a source of a conductive member of the ring, and the bus ring is electrically connected to each stator coil in phase. Except for the connection position of the coil connection terminal to be connected, a step of applying an insulating material to form an insulating coating on the member that is the source of the conductive member, and a source of the conductive member that has been coated Forming a member into the shape of the bus ring; electrically connecting the power supply terminal to a connection position of the power supply terminal in the bus ring; and the coil in the bus ring. And said step of electrically connecting the coil connection terminals at the connection position of the connection terminals, a plurality of retaining members which are arranged spaced from one another in the circumferential direction of the bus ring, stacked along the axial direction of the annular Bundling and holding each of the bus rings together, and in the step of holding each of the bus rings by the holding member, the bus ring to be held is held for each holding member. Inserting from the opening of the first holding body and closing the opening with a second holding body connected to the first holding body via a hinge portion, thereby forming a holding portion for each phase that holds the bus ring, A lock mechanism provided between the first holding body and the second holding body is operated to maintain a state where the opening by the second holding body is closed .

  Here, in the coating forming step, an insulating UV curable resin is applied to a place other than the electrical connection position of the power supply terminal and the coil connection terminal in the conductive member, and the applied UV curing is applied. It is desirable to irradiate the resin with ultraviolet rays.

  In the power supply ring according to the present invention, the conductive member has the connection position of the power supply terminal and the coil connection terminal formed without going through the coating stripping process, and the coating is formed at a place excluding the connection position. . Moreover, the manufacturing method of the power feeding ring according to the present invention can expose the connection positions of the power feeding terminal and the coil connection terminal in the conductive member without going through the coating stripping step, and The coating can be applied to places other than the connection position. For this reason, the power supply ring and the method for manufacturing the power supply ring according to the present invention can increase the production efficiency by the amount that the coating stripping process is abolished while ensuring the power supply performance and the insulation performance. Therefore, the power supply ring and the method for manufacturing the power supply ring can improve productivity, and thereby can reduce 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 side view showing the holding member. FIG. 11 is a front view showing the holding member. 12 is a cross-sectional view of the holding member taken along line XX in FIG.

  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 combinations 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) are arranged at four positions with a 90 ° 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 feed ring 1, a plurality of coil connection terminals 22 are also connected to the neutral phase bus ring 10n in the same manner as the bus rings 10u, 10v, 10w.

  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. In the present embodiment, the coil connection terminals 22 having the same shape are all connected in the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n. The feed ring 1 of the present embodiment can reduce the cost by sharing the coil connection terminal 22 as described above.

  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 electrical connection positions 10a, 10b with the coil connection terminal 22 (FIGS. 3 to 6). Further, the neutral phase bus ring 10n is an insulating material that is applied except for an electrical connection position 10b between at least one conductive member 11 arranged along the circumferential direction and the coil connection terminal 22 in the conductive member 11. 3 (FIGS. 3 and 7).

  As the conductive member 11, one formed by bending a single metal rod, or one formed by bending a bundle of a plurality of metal strands, etc. are conceivable. In this embodiment, in order to improve the assembly workability to the stator 100, the latter bundle of strands having flexibility is used.

  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 the present embodiment, UV curable resin is applied to the outer peripheral surface of the conductive member 11 except for the electrical connection positions 10a and 10b with the power supply terminals 21u, 21v and 21w and the coil connection terminal 22, and the UV curing is performed. A film (UV curable coating) 12 is formed by irradiating the resin with ultraviolet rays. 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 has two conductive members 11u and 11u, and one end of each of the two conductive members 11u and 11u. The power feeding terminal 21u is integrated by crimping by caulking or the like. One end of each is projected outward in the radial direction. One conductive member 11u is disposed along one circumferential direction from the end on the power supply terminal 21u side. The other conductive member 11u is disposed along the other circumferential direction from the end on the power supply terminal 21u side. In the bus ring 10u, the other ends of the two conductive members 11u and 11u are spaced apart in the circumferential direction, and have a C shape.

  A coil connection terminal 22 is electrically connected to each of the conductive members 11 u and 11 u for each U-phase stator coil 102. The respective coil connection terminals 22 are connected to positions corresponding to the arrangement positions of the U-phase stator coils 102 in the respective conductive members 11u and 11u. In this example, since the stator 100 has four U-phase stator coils 102, four coil connection terminals 22 are connected to the respective conductive members 11u and 11u.

  In each of the conductive members 11u and 11u, a coating 12u formed through a material application process in a place excluding the connection position 11a (one end) of the power supply terminal 21u and the connection position 11b of the coil connection terminal 22. Is provided.

  As shown in FIG. 5, the V-phase bus ring 10v according to the present embodiment has two conductive members 11v and 11v, and one end of each of the two conductive members 11v and 11v. The power feeding terminal 21v is integrated by being crimped by caulking or the like. One end of each is projected outward in the radial direction. In the bus ring 10v, like the U-phase bus ring 10u, one conductive member 11v is disposed along one circumferential direction from the end on the power feeding terminal 21v side, and the other conductive member 11v is fed. It arrange | positions along the other circumferential direction from the edge part by the side of the terminal 21v, and has comprised C shape.

  A coil connection terminal 22 is electrically connected to each conductive member 11v, 11v for each V-phase stator coil 102. Each coil connection terminal 22 is connected to a position corresponding to the location of the V-phase stator coil 102 in each conductive member 11v, 11v. In this example, since the stator 100 has four V-phase stator coils 102, four coil connection terminals 22 are connected to the respective conductive members 11v and 11v.

  In each of the conductive members 11v and 11v, a coating 12v formed through a material application process at a place excluding the connection position 11a (one end) of the power supply terminal 21v and the connection position 11b of the coil connection terminal 22. Is provided.

  As shown in FIG. 6, the W-phase bus ring 10w of this embodiment includes two conductive members 11w and 11w, and one end of each of the two conductive members 11w and 11w is provided. The power feeding terminal 21w is integrated by being crimped by caulking or the like. One end of each is projected outward in the radial direction. In the bus ring 10w, as in the U-phase bus ring 10u, one conductive member 11w is disposed along one circumferential direction from the end on the power feeding terminal 21w side, and the other conductive member 11w is fed. It arrange | positions along the other circumferential direction from the edge part by the side of the terminal 21w, and has comprised C shape.

  A coil connection terminal 22 is electrically connected to each of the conductive members 11 w and 11 w for each W-phase stator coil 102. Each coil connection terminal 22 is connected to a position corresponding to the location of the W-phase stator coil 102 in each conductive member 11w, 11w. In this example, since the stator 100 has four W-phase stator coils 102, four coil connection terminals 22 are connected to the respective conductive members 11w and 11w.

  In each of the conductive members 11w and 11w, a coating 12w formed through a material application process in a place excluding the connection position 11a (one end) of the power supply terminal 21w and the connection position 11b of the coil connection terminal 22. Is provided.

  As shown in FIG. 7, the neutral phase bus ring 10 n of the present embodiment has a single conductive member 11 n that is formed in a C shape and arranged along the circumferential direction. The coil connection terminal 22 is electrically connected to the conductive member 11n at a position corresponding to the place where each stator coil 102 is arranged. In this example, since the stator 100 has twelve stator coils 102 in each phase, twelve coil connection terminals 22 are connected to the conductive member 11n.

  In the conductive member 11n, a coating 12n formed through a material application step is provided at a location excluding the connection position 11b of the coil connection terminal 22.

  In the feed ring 1, the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n are stacked along the axial 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. Thereby, in this electric power feeding ring 1, since it can suppress the relative movement between the coil connection terminal 22 and the stator coil 102 accompanying the input of vibration etc., for example, after attaching to the stator 100, the coil connection terminal 22 and The electrical connection between the stator coil 102 can be maintained and the durability can be improved. 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. In this example, the holding member 30 is disposed in the vicinity of the stator coil 102 for each stator coil 102.

  Here, in the power feeding ring 1 of the present embodiment, depending on the position in the circumferential direction, there are some places where the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n are all stacked, and two of them are included. There are places where only or three are stacked. Further, in the power supply ring 1, only the neutral phase bus ring 10n exists, and there are places where the bus rings 10u, 10v, and 10w are not 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, a second holding body 32, and a hinge portion 33 (FIGS. 9 to 12). 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 closed by the second holding body 32, four holding portions 30a, 30b, 30c, and 30d are formed inside (FIGS. 9 and 10). . Each holding part 30a, 30b, 30c, 30d is arranged side by side in the axial direction, and appropriately holds the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n inserted from the opening 31a. To do.

  The 1st holding body 31 and the 2nd holding body 32 are integrated via the hinge part 33 which has elasticity. For this reason, the holding member 30 exposes the opening 31a by pulling the second holding body 32 away from the first holding body 31 with the hinge portion 33 as a fulcrum, so that the bus rings 10u, 10v, 10w and the neutral phase buses are exposed. The ring 10n can be inserted.

  Further, the holding member 30 is provided with a lock mechanism 34 for maintaining the state in which the opening 31a is closed by the second holding body 32 (FIG. 12). The lock mechanism 34 is interposed between the first holding body 31 and the second holding body 32, and the first engagement portion 34 a on the first holding body 31 side and the second engagement on the second holding body 32 side. And a joint part 34b. In this illustration, the first holding body 31 and the second holding body 32 block the opening 31a by fitting the second engaging portion 34b as the protruding portion into the first engaging portion 34a as the groove portion. Held in.

  Further, the holding member 30 is provided with a fixing portion 35 for fixing the power feeding ring 1 to the stator 100. The fixing portion 35 is disposed at one end (end opposite to the opening 31a) along the arrangement of the four holding portions 30a, 30b, 30c, and 30d. The fixed portion 35 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 12). 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 35 of the holding members 30 disposed in the vicinity of the coil connection terminals 22, and the assembly 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 forming step of the conductive member 11, the forming step of the covering 12, the connecting step of the power supply terminals 21u, 21v, 21w and the coil connection terminal 22, the bus rings 10u, 10v, 10w by the holding member 30, Holding the neutral phase bus ring 10n. In the following illustration, the coating 12 is formed after the conductive member 11 is formed. However, the power feeding ring 1 is subjected to a molding process so as to become the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n after the process of forming the coating 12 on the member which is the base of the conductive member 11. Also good.

  The forming process of the conductive member 11 is a process of forming the conductive members 11 (11u, 11v, 11w, 11n) in the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n described above. In this forming step, for example, the member that is the base of the conductive member 11 is cut into a predetermined length, and this member is bent into the shape as described above.

  The process of forming the covering 12 is to apply an insulating material to the conductive member 11 except for the connection position 11a of the power supply terminals 21u, 21v, 21w and the connection position 11b of the coil connection terminal 22, and to insulate the conductive member 11 It is the process of forming the coating 12 of the above. In the bus rings 10u, 10v, 10w, for example, after masking the connection positions 11a, 11b of the power supply terminals 21u, 21v, 21w and the coil connection terminal 22, the conductive member 11 (11u, 11v, 11w) is masked. Apply insulating material. Thereby, in bus ring 10u, 10v, 10w, an insulating material is apply | coated to the place except connection position 11a, 11b in the electrically-conductive member 11 (11u, 11v, 11w). Thereafter, in the bus rings 10u, 10v, and 10w, the applied insulating material is cured by a method according to the insulating material, whereby each connection position 11a in the conductive member 11 (11u, 11v, 11w) is obtained. , 11b, the coating 12 (12u, 12v, 12w) is formed. Further, in the neutral phase bus ring 10n, for example, as in the case of the bus rings 10u, 10v, and 10w, the respective connection positions 11b of the coil connection terminals 22 are masked and then insulated from the conductive member 11 (11n). Apply a functional material. Thereby, in the neutral phase bus ring 10n, the insulating material is applied to a place excluding the connection position 11b in the conductive member 11 (11n). Thereafter, in the neutral phase bus ring 10n, the applied insulating material is cured by a method according to the insulating material, thereby removing the respective connection positions 11b in the conductive member 11 (11n). A coating 12 (12n) is formed. 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 connection process of the power supply terminals 21u, 21v, 21w and the coil connection terminal 22 is to electrically connect the power supply terminals 21u, 21v, 21w to the connection position 11a of the power supply terminals 21u, 21v, 21w in the bus rings 10u, 10v, 10w. This is a step of connecting and electrically connecting the coil connection terminal 22 to the connection position 11b of the coil connection terminal 22 in the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n. In this connection step, for example, the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n are set in jigs or the like according to each. In the bus rings 10u, 10v, and 10w, the power supply terminals 21u, 21v, and 21w are crimped and electrically connected to the connection positions 11a of the power supply terminals 21u, 21v, and 21w by caulking, for example. Further, in the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n, the coil connection terminals 22 are electrically connected to the respective connection positions 11b of the coil connection terminals 22 by, for example, crimping or welding such as caulking. . In this illustration, for example, an end of a metal plate material that is a material of the coil connection terminal 22 is wound around the conductive member 11 (11u, 11v, 11w, 11n), and the displacement of the conductive member 11 in the circumferential direction is performed. The wound portion is crimped by caulking or the like so as not to occur.

  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, 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 34 is operated. In this holding step, the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n are bundled and held together by the holding members 30 by operating the lock mechanisms 34 of all the holding members 30.

  In this example, after the conductive member 11 is formed, the coating 12 is formed. However, the power feeding ring 1 is subjected to a molding process so as to become the bus rings 10u, 10v, 10w and the neutral phase bus ring 10n after the process of forming the coating 12 on the member which is the base of the conductive member 11. Also good. In this case, in the process of forming the covering 12 on the bus rings 10u, 10v, 10w, the bus rings 10u, 10v, 10w are electrically connected to the power source side with respect to the member that is the source of the conductive members 11u, 11v, 11w. Insulated except for the connection position 11a of the power supply terminals 21u, 21v, 21w to be connected to the coil and the connection position 11b of the coil connection terminal 22 for electrically connecting the bus rings 10u, 10v, 10w to the respective stator coils 102 of the same phase. An insulating material is applied to form insulating coatings 12u, 12v, and 12w on members that are the basis of the conductive members 11u, 11v, and 11w. Thereafter, the base members of the conductive members 11u, 11v, 11w to which the coatings 12u, 12v, 12w are applied are formed into the shapes of the bus rings 10u, 10v, 10w. Further, in the case of the neutral phase bus ring 10n, an insulating material is applied to the member that is the source of the conductive member 11n except for the connection position 11b of the coil connection terminal 22, and An insulating coating 12n is formed on the resulting member. Thereafter, the member that is the base of the conductive member 11n to which the coating 12n is applied is formed into the shape of the neutral phase bus ring 10n.

  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 positions 11a and 11b of the connection terminal 22 can be exposed to the outside, and the coating 12 can be applied to the conductive member 11 except for the connection positions 11a and 11b. That is, the power supply ring 1 according to the present embodiment includes the connection positions 11a and 11b of the power supply terminals 21u, 21v, and 21w and the coil connection terminal 22 formed without going through the coating stripping process, and the connection position 11a. , 11b except for the covering 12 is formed. For this reason, the manufacturing method of the feed ring 1 and the feed ring 1 according to the present embodiment can increase the production efficiency as much as the stripping process of the coating is abolished while securing the feed performance and the insulation performance. Therefore, the power supply ring 1 and the method for manufacturing the power supply ring 1 can improve productivity, and thereby can reduce the manufacturing cost.

DESCRIPTION OF SYMBOLS 1 Feeding ring 10u U-phase bus ring 10v V-phase bus ring 10w W-phase bus ring 10n Neutral phase bus ring 11, 11u, 11v, 11w, 11n Conductive member 11a, 11b Connection position 12, 12u, 12v, 12w , 12n Cover 21u, 21v, 21w Feed terminal 22 Coil connection terminal 30 Holding member 35 Fixing part 100 Stator 101 Stator core 101a Teeth 101b Annular body 101c Through hole 102 Stator coil

Claims (6)

A bus ring for each phase of the rotating machine arranged along a plurality of stator coils arranged in an annular shape in the stator of the rotating machine;
A power supply terminal for each phase that is molded as a part different from the bus ring, and electrically connects the bus ring to the power supply side,
A plurality of coil connection terminals that are molded as parts separate from the bus ring and electrically connect the bus ring to the stator coils of the same phase;
A plurality of holding members that are arranged at intervals along the circumferential direction of the bus ring and hold together the bus rings that are stacked along the annular axial direction.
With
The bus ring is an electrical connection position between at least one conductive member arranged along a circumferential direction of a stator coil group including the plurality of stator coils, and the power supply terminal and the coil connection terminal in the conductive member. An insulating coating applied except for ,
The holding member includes a first holding body in which an opening into which the bus ring can be inserted is formed, a second holding body capable of closing the opening, the first holding body, and the second holding body. A hinge portion provided between the bodies, and a lock mechanism provided between the first holding body and the second holding body and maintaining the state in which the opening by the second holding body is closed. A power supply ring having a holding part for each phase which is formed inside and holds the bus ring when the opening is closed by the second holding body .   The power supply ring according to claim 1, wherein the coating is a UV curable coating. The power feeding ring according to claim 1 , wherein the holding member has a fixing portion fixed to the stator . Forming a bus ring conductive member for each phase of the rotating machine arranged along a plurality of stator coils arranged in an annular shape in the stator of the rotating machine;
Except for the connection position of the power supply terminal that electrically connects the bus ring to the power supply side and the connection position of the coil connection terminal 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;
Electrically connecting the power supply terminal to a connection position of the power supply terminal in the bus ring, and electrically connecting the coil connection terminal to a connection position of the coil connection terminal in the bus ring;
A plurality of holding members that are spaced apart from each other in the circumferential direction of the bus ring to hold the bus rings that are stacked along the annular axial direction in a bundle;
Have
In the step of holding each bus ring by the holding member, for each holding member, the bus ring to be held is inserted from the opening of the first holding body, and is attached to the first holding body through a hinge portion. By closing the opening with a continuous second holding body, a holding unit for each phase that holds the bus ring is formed, and a lock mechanism provided between the first holding body and the second holding body is operated. A method for manufacturing a feed ring, wherein the state in which the opening by the second holding body is closed is maintained. The bus ring is connected to the power source side with respect to a member that is a source of a conductive member of the bus ring for each phase of the rotating machine arranged along a plurality of stator coils arranged in an annular shape in the stator of the rotating machine. Applying an insulating material, except for the connection position of the power supply terminal to be electrically connected to and the connection position of the coil connection terminal to electrically connect the bus ring to the stator coils of the same phase, the conductive Forming an insulating coating on a member that is a source of the member;
Forming a member that is the base of the conductive member that has been coated into the shape of the bus ring;
Electrically connecting the power supply terminal to a connection position of the power supply terminal in the bus ring, and electrically connecting the coil connection terminal to a connection position of the coil connection terminal in the bus ring;
A plurality of holding members that are spaced apart from each other in the circumferential direction of the bus ring to hold the bus rings that are stacked along the annular axial direction in a bundle;
Have
In the step of holding each bus ring by the holding member, for each holding member, the bus ring to be held is inserted from the opening of the first holding body, and is attached to the first holding body through a hinge portion By closing the opening with a continuous second holding body, a holding unit for each phase that holds the bus ring is formed, and a lock mechanism provided between the first holding body and the second holding body is operated. A method for manufacturing a feed ring , wherein the state in which the opening by the second holding body is closed is maintained . In the coating forming step, an insulating UV curable resin is applied to a place other than the electrical connection position of the power supply terminal and the coil connection terminal in the conductive member, and the applied UV curable resin is applied to the applied UV curable resin. The method for manufacturing a power feeding ring according to claim 4 , wherein ultraviolet rays are irradiated .

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