JP2008086079A - Intensive power distribution components - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide intensive power distribution components that can shorten the length of annular conductors, be miniaturized while securing electric insulation between the annular conductors adjacent, and prevent the oxidation of core wires of the annular conductors whose electric insulation coating is removed. <P>SOLUTION: The intensive power distribution components include a plurality of the annular conductors 10, 11, 12, 13; a plurality of holding components 31-34, which hold a plurality of the annular conductors 10, 11, 12, 13 integrally with these conductors 10, 11, 12, 13 arrayed along the axial direction CL of the conductors and spaced to each other; and a plurality of relay terminals 40 electrically connected respectively and separately to the conductors 10, 11, 12, 13 held by the holding components 31-34. When the conductors are electrically connected to the relay terminals 40, the electric insulation coating 99 of the conductors whereto the relay terminals 40 are connected is removed from the core wires 98. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a concentrated power distribution component for a motor, and more particularly to a concentrated power distribution component for performing power distribution in a concentrated manner with respect to a plurality of coils arranged in a stator of a motor mounted on a vehicle.

In recent years, hybrid cars have been developed in order to save energy with an emphasis on the environment. Hybrid cars use an engine that uses fossil fuel as the main power source of the car.
A motor assist mechanism for assisting the engine is provided.

A motor used in an automobile includes, for example, a rotor directly connected to an engine shaft, and a ring-shaped stator disposed around the rotor. This stator has a large number of magnetic poles formed by applying a multi-phase coil to the core, a stator holder that houses these magnetic poles, and a concentrated power distribution for the multi-phase coils. Has power distribution components.

Conventional concentrated power distribution components have U-phase, V-phase, and W-phase bus rings. Each bus ring is formed by bending a linear conductor into a substantially annular shape, and by bending a part of these bus rings, a plurality of pieces that are bent into U-shapes inward along the diameter direction are formed. A terminal portion is formed. These terminal portions are electrically and mechanically connected to the coil.

The bus ring has a plurality of protruding terminal portions so that each bus ring is electrically and mechanically connected to a coil at a corresponding position so that adjacent bus rings are not in electrical contact with each other. This is to ensure electrical insulation by securing the mutual distance. The terminal portions of the respective bus rings protrude inward on the coil side and are bent into a U shape at positions different from each other in the circumferential direction.

Further, by bending a part of each bus ring in this way, a plurality of terminal portions are formed to protrude toward the coil side, thereby facilitating electrical and mechanical connection between the terminal portions and the coil. (For example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 2005-229677

However, in the centralized power distribution component of Patent Document 1, each bus ring must be bent into a complicated shape, and in order to form such a complex shaped bus ring, the required linear conductors are formed. Compared with the case of forming a simple ring-shaped member, the length becomes considerably long, so that the processing cost cannot be reduced, and the material cost increases.

In addition, each bus ring is formed with a plurality of terminal portions projecting inward, so that the bus ring is larger than a simple annular one, and a plurality of buses are accommodated in the housing space of the stator housing of the motor. In order to accommodate the ring assembly, the storage space becomes large,
Large motors are inevitable.
When another conductor member is electrically connected to the bus ring conductor, the insulation must be removed from the bus ring conductor in advance to expose the conductor. There is a risk of oxidation.

  Therefore, in order to solve the above-mentioned problems, the present invention can shorten the length of the annular conductor and oxidize the core wire from which the electrical insulation coating of the annular conductor is removed while ensuring electrical insulation between the adjacent annular conductors. An object is to provide a centralized power distribution component that can be prevented.

In order to solve the above problems, the central power distribution component of the present invention is a central power distribution component that is disposed on the stator of the motor and electrically connected to the coil of the stator,
A plurality of annular conductors each having a core wire and an electrical insulation coating provided on the core wire;
A plurality of holding parts that integrally hold the plurality of annular conductors in a state where the plurality of annular conductors are arranged at intervals from each other along the axial direction of the annular conductor;
A plurality of relay terminals electrically connected to the plurality of annular conductors held by the plurality of holding parts, respectively;
With
When the annular conductor is electrically connected to the relay terminal, a portion of the annular conductor to which the relay terminal is connected is removed from the core wire.

  The concentrated power distribution component according to the present invention is preferably characterized in that the annular conductor is formed by bending a linear conductor.

  In the concentrated power distribution component according to the present invention, preferably, the annular conductor is an enameled wire, and the relay terminal and the core wire are electrically and mechanically connected by welding.

In the concentrated power distribution component according to the present invention, preferably, the inner diameters of the plurality of annular conductors are substantially the same, and a circular space is formed inside the plurality of annular conductors.

The centralized power distribution component of the present invention, preferably the relay terminal,
An annular conductor connecting end electrically connected by engaging with the core wire of the annular conductor;
A coil connection end electrically connected to the contact end of the stator coil;
It has a connection part which connects the coil connection end and the annular conductor connection end.

The concentrated power distribution component of the present invention is preferably characterized in that the coil connection end of the relay terminal has a region that can be connected to the contact end of the coil along the axial direction of the annular conductor. To do.

In the centralized power distribution component according to the present invention, preferably, each holding component has an electrical insulating portion between the coil connection end of the relay terminal and the plurality of annular conductors held by the holding component. And

The concentrated power distribution component according to the present invention is preferably configured so that the contact end portion of the coil does not hit the connection portion of the relay terminal when the concentrated power distribution component is disposed in the accommodating portion of the stator. Is characterized in that a relief portion is formed.

In the concentrated power distribution component according to the present invention, preferably, the plurality of annular conductors include at least a U-phase annular conductor, a V-phase annular conductor, and a W-phase annular conductor of a three-phase brushless motor.

In the concentrated power distribution component according to the present invention, preferably, the plurality of annular conductors further include the neutral phase annular conductor.

According to the centralized power distribution component of the present invention, an annular conductor having a core wire and an electrical insulation coating provided on the core wire can be used while the length of the annular conductor can be shortened and electrical insulation between adjacent annular conductors is ensured. When the annular conductor is electrically connected to the relay terminal, the electrical insulation coating of the portion to which the relay terminal of the annular conductor is connected is removed from the core wire, so that the electrical insulation coating of the annular conductor is removed. It is possible to prevent oxidation of the core wire.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a view showing a preferred embodiment of the centralized power distribution component of the present invention.

A centralized power distribution component 1 shown in FIG. 1 is used, for example, to supply a drive current to a plurality of windings (coils) of a three-phase DC brushless motor mounted on a hybrid vehicle. This motor includes, for example, a rotor directly connected to an engine shaft, and a ring-shaped stator disposed around the rotor. This stator has a large number of magnetic poles formed by arranging a plurality of phase coils in the core, a stator holder that houses these magnetic poles,
It has the concentrated power distribution component 1 for performing concentrated power distribution to the coils of a plurality of phases.

A concentrated power distribution component 1 shown in FIG. 1 is an annular concentrated power distribution member. The concentrated power distribution component 1 includes three-phase annular conductors 11, 12, 13, a neutral phase annular conductor 10, a plurality of sets of electrically insulating holding components 31, 32, 33, 34, and a plurality of A relay terminal 40 having conductivity is provided.

The annular conductor 11 corresponds to the U phase of the three-phase brushless motor, the annular conductor 12 corresponds to the V phase,
The annular conductor 13 corresponds to the W phase. Each of the annular conductors 11, 12, 13, and 10 is formed by bending a linear electric conductive member into an annular shape.

First, the three-phase annular conductors 11, 12, and 13 and the neutral-phase annular conductor 10 shown in FIG. 1 will be described.

The annular conductors 11, 12, 13 and the annular conductor 10 are preferably circular in cross section, and are also called wires, and enameled wires having substantially the same diameter are used. The diameter of the annular conductor is, for example, 3.2 mm. . The enameled wire is covered with an insulating film except for the portion electrically and mechanically connected to the relay terminal 40.

As shown in FIG. 1, both end portions of the annular conductor 11 are connected to the power supply terminal 11D. Similarly, both ends of the annular conductor 12 are connected to the power supply terminal 12D, and both ends of the annular conductor 13 are connected to the power supply terminal 13D. Both end portions 10C of the annular conductor 10 are electrically connected. The power supply terminals 10D, 11D, and 12D and the both end portions 10C are arranged at positions shifted from each other in the circumferential direction R.

As shown in FIG. 2, the power supply terminal 11D, the power supply terminal 12D, and the power supply terminal 13D are electrically connected to one end of the U-phase coil 100, the V-phase coil 101, and the W-phase coil 102, respectively. The sex-phase annular conductor 10 is electrically connected to the other ends of the U-phase coil 100, the V-phase coil 101, and the W-phase coil 102.

  Next, the holding components 31, 32, 33, and 34 in FIG. 1 will be described.

The holding components 31, 32, 33, and 34 are arranged at intervals from each other along the circumferential direction R with respect to the annular conductors 11, 12, 13 and the annular conductor 10 of the concentrated power distribution component 1.

The holding parts 31, 32, 33, 34 are made of a heat-resistant resin such as PPS (polyphenylene sulfide) having electrical insulation. The holding parts 31, 32, 33, 34 are arranged in a state where there is a space between the annular conductors 11, 12, 13 and the annular conductor 10.
, 13 and the annular conductor 10 are held in parallel.

As illustrated in FIG. 1, the holding components 31, 32, 33, and 34 are arranged along the circumferential direction R (clockwise direction), and the holding components 31, 32, 31, 33, 31, 34, 31, 32, 31, 33
, 31... That is, the holding component 31 is disposed between the holding components 32, 33, and 34.

3A to 3D show examples of the shapes of the holding parts 31, 32, 33, and 34, respectively.

The holding component 31 shown in FIG. 3A and the holding component 34 shown in FIG. 3D have the same shape, and are used upside down. Similarly, the holding component 32 shown in FIG. 3 (B) and the holding component 33 shown in FIG. 3 (C) have the same shape, and are used upside down. Therefore, the holding part 3
1, 32, 33, and 34 are used in four modes corresponding to the four annular conductors 10 to 13, but two types of shapes may be prepared. As a result, two types of holding parts are not required.
Since the type is sufficient, the type of parts can be reduced and the cost can be reduced. In the example of FIG. 1, 48 of these holding parts 31, 32, 33, and 34 are used.

  The shapes of the holding component 31 shown in FIG. 3A and the holding component 34 shown in FIG. 3D will be described.

The holding components 31 and 34 have a rectangular parallelepiped shape, and include annular conductor receiving grooves 50 and 51 and an attachment groove 60 for the relay terminal 40. The annular conductor receiving groove 50 of the holding component 31 shown in FIG. 3A is a groove for receiving the annular conductor 10 of FIG. 1, and the annular conductor receiving groove 51 of the holding component 31 is the annular groove of FIG. A groove for accommodating the conductors 11, 12, and 13.

The annular conductor receiving groove 51 of the holding component 34 shown in FIG.
, 12 and the annular conductor accommodating groove 50 of the holding component 34 is a groove for accommodating the annular conductor 13 of FIG. The housing grooves 50 and 51 are formed from the opposite side along the E direction.

  The shapes of the holding component 32 shown in FIG. 3B and the holding component 33 shown in FIG. 3C will be described.

The holding parts 32, 33 have a rectangular parallelepiped shape, and the annular conductor receiving grooves 70, 71, 72.
And an attachment groove 80 for the relay terminal 40. The annular conductor receiving groove 70 of the holding component 32 shown in FIG. 3B is a groove for receiving the annular conductor 10 of FIG. 1, and the annular conductor receiving groove 71 of the holding component 32 is the annular groove of FIG. A groove for accommodating the conductors 12 and 13. The annular conductor accommodating groove 72 is a groove for accommodating the annular conductor 11 of FIG. 1.

The annular conductor receiving groove 71 of the holding component 33 shown in FIG.
The annular conductor accommodating groove 70 of the holding component 33 is the annular conductor 1 of FIG.
3 is a groove for accommodating 3. The annular conductor accommodating groove 72 is a groove for accommodating the annular conductor 12 of FIG. 1. The housing grooves 70 and 71 are formed from the opposite side along the E direction. The accommodation groove 72 is formed along the F direction, and the F direction and the E direction are orthogonal to each other.

The peripheral surfaces of the corresponding annular conductors 10, 11, 12, 13 are fitted into the receiving grooves 50, 51 of the holding parts 31, 34 and the receiving grooves 70, 71 of the holding parts 32, 33 to securely hold them. A recessed recess 69 is formed. Thereby, the cyclic | annular conductors 10, 11, 12, and 13 can hold | maintain a fixed space | interval along the E direction.

FIG. 4 shows an assembly example of the holding component 31, the relay terminal 40, and the four annular conductors 10 to 13 in the portion T of FIG. 1 as an example. FIG. 5 shows an example of the shape of the relay terminal 40.

In the present embodiment, one type of the plurality of relay terminals 40 is used. Thereby, the kind of relay terminal to be used can be reduced, and cost reduction can be achieved. The relay terminal 40 is
For example, a copper base material is plated with tin, and has one annular conductor connection end 41, two coil connection ends 42 and 42, and a connection portion 43.

The connecting portion 43 in FIG. 5 connects the annular conductor connecting end 41 and the coil connecting ends 42 and 42, and the connecting portion 43 has a relief portion 44. The annular conductor connecting end 41 is formed so as to protrude from the connecting portion 43 along the H direction, and has a substantially U shape or J shape.

The two coil connection ends 42 and 42 are formed so as to protrude in parallel from the connection portion 43 along the J direction. The width K of the coil connection ends 42, 42 is set to be larger than the diameter M of the coil connection projection 150 shown in FIG.

When the height S1 of the holding component 31 (32, 33, 34) shown in FIG. 7 is, for example, 22 mm, and the width S2 from the holding component to the coil connection end 42 is 13.5 mm, the two shown in FIG. The length G in the J direction of the coil connection ends 42, 42 is preferably not less than 5, 9 mm, for example. The length G of the coil connection ends 42 and 42 is set with a sufficient margin so that the connection protrusion 150 can be electrically and mechanically contacted.

The two coil connection ends 42 and 42 shown in FIG. 6A are welded while being pressed against the connection protrusion 150 of the coil along the N direction as shown in FIG. 6B from a parallel state. Thereby, the two coil connection ends 42 and 42 and the connection projection 150 of the coil can be reliably connected electrically and mechanically by welding.

Next, referring to FIGS. 7 to 10, the annular conductors 10 to 13 and the holding parts 31, 32, 33,
34 and an example of an assembly structure of the relay terminal 40 will be described.

In FIG. 7, the annular conductors 10 to 13 are held at predetermined intervals by the holding component 31, and the annular conductor connection end 41 of the relay terminal 40 is fitted to the core wire 98 of the neutral phase annular conductor 10. Are electrically and mechanically fixed by welding. The annular conductor connection end 41 of the relay terminal 40 is electrically fixed to the core wire 98 of the annular conductor 10.
For example, an enameled wire is preferably used as the annular conductor 10 as shown in FIG. The enameled wire has a core wire 98 and an electrical insulating coating 99 coated on the outer periphery of the core wire 98. The core wire 98 is, for example, a copper wire having a circular cross section, and the electrical insulation coating 99 is an enamel layer.

As shown in FIG. 7, immediately before the annular conductor 10 is electrically connected to the relay terminal 40, the portion of the annular conductor 10 to which the annular conductor connection end 41 of the relay terminal 40 is connected is electrically insulated. Is removed from the core wire 98, and the core wire 98 is partially exposed. Thereby, the oxidation of the core wire 98 exposed by removing the electrical insulation coating of the annular conductor can be prevented.
In this way, the timing of partial removal of the electrical insulation coating 99 is preferably just before the work of fitting the annular conductor connecting end 41 of the relay terminal 40 to the core wire 98 of the annular conductor 10 of the neutral phase and welding. is there. The annular conductor connection end 41 of the relay terminal 40 can be stably welded to the core wire 98 that is prevented from being oxidized.
The coil connection end 42 of the relay terminal 40 is electrically and mechanically fixed to the connection protrusion 150 of the coil by welding. Thus, the neutral-phase annular conductor 10 is electrically connected to the U-phase coil 100, the V-phase coil 101, and the W-phase coil 102 via the relay terminal 40 and the coil connection protrusion 150. .

As shown in FIG. 7, in the holding component 31, since the electrically insulating partition wall 81 is formed between the annular conductor 10 and the adjacent annular conductor 11, a part of the electrically insulating coating 99 of the annular conductor 10 is removed. Even if the core wire 98 is exposed, the electrical insulation between the core wire 98 where the annular conductor 10 is exposed and the adjacent annular conductor 11 can be ensured. Moreover, since the electrically insulating partition 82 of the holding component 31 is disposed between the three annular conductors 11, 12, 13 and the coil connection end 42 of the relay terminal 40, the three annular conductors 11, 12, 13 are arranged. And electrical insulation between the coil connection end 42 of the relay terminal 40 can be ensured.

Next, in FIG. 8, the annular conductors 10 to 13 are held at a predetermined interval by the holding component 32, and the annular conductor connection end 41 of the relay terminal 40 is connected to the core wire 98 of the U-phase annular conductor 11. It is electrically and mechanically fixed by fitting and welding. The annular conductor connection end 41 of the relay terminal 40 is electrically fixed to the core wire 98 of the annular conductor 10 by welding.
For example, an enameled wire is preferably used as the annular conductor 11 as shown in FIG. The enameled wire has a core wire 98 and an electrical insulating coating 99 coated on the outer periphery of the core wire 98. The core wire 98 is, for example, a copper wire having a circular cross section, and the electrical insulation coating 99 is an enamel layer.

As shown in FIG. 8, immediately before the annular conductor 11 is electrically connected to the relay terminal 40, the portion of the annular conductor 11 to which the annular conductor connecting end 41 of the relay terminal 40 is connected is electrically insulated 99. Is removed from the core wire 98, and the core wire 98 is partially exposed. Thereby, the oxidation of the core wire 98 exposed by removing the electrical insulation coating of the annular conductor can be prevented.
In this way, the timing of partial removal of the electrical insulation coating 99 is preferably immediately before the work of fitting the annular conductor connecting end 41 of the relay terminal 40 to the core wire 98 of the annular conductor 11 and welding. The annular conductor connection end 41 of the relay terminal 40 can be stably welded to the core wire 98 that is prevented from being oxidized.
The coil connection end 42 of the relay terminal 40 is electrically and mechanically fixed to the connection protrusion 150 of the coil by welding. As a result, the U-phase annular conductor 11 is electrically connected to the connection protrusion 150 of the coil on one end side of the U-phase coil 100 via the relay terminal 40.

As shown in FIG. 8, in the holding component 32, since the electrically insulating partition walls 81 and 83 are formed between the annular conductor 11 and the adjacent annular conductors 11 and 12, the electrically insulating coating 99 of the annular conductor 11 is formed. Even if the core wire 98 is exposed due to the partial removal, the electrical insulation between the exposed core wire 98 of the annular conductor 11 and the adjacent annular conductors 10 and 12 can be ensured. In addition, since the electrically insulating partition wall 84 of the holding component 32 is disposed between the annular conductors 12 and 13 and the coil connection end 42 of the relay terminal 40, the coil connection ends of the annular conductors 12 and 13 and the relay terminal 40 are arranged. Thus, electrical insulation with 42 can be ensured.

Next, in FIG. 9, the annular conductors 10 to 13 are held at a predetermined interval by the holding component 33, and the annular conductor connection end 41 of the relay terminal 40 is connected to the core wire 98 of the V-phase annular conductor 12. It is electrically and mechanically fixed by fitting and welding. However, relay terminal 4
Unlike the examples of FIGS. 7 and 8, 0 is used upside down.

The annular conductor connection end 41 of the relay terminal 40 is electrically fixed to the core wire 98 of the annular conductor 10. The coil connection end 42 of the relay terminal 40 is electrically and mechanically fixed to the connection protrusion 150 of the coil by welding. Thus, the V-phase annular conductor 12 is electrically connected to the connection protrusion 150 of the coil on one end side of the V-phase coil 101 via the relay terminal 40.

  For example, an enameled wire is preferably used as the annular conductor 12 as shown in FIG. The enameled wire has a core wire 98 and an electrical insulating coating 99 coated on the outer periphery of the core wire 98. The core wire 98 is, for example, a copper wire having a circular cross section, and the electrical insulation coating 99 is an enamel layer.

As shown in FIG. 9, immediately before the annular conductor 12 is electrically connected to the relay terminal 40, the portion of the annular conductor 12 to which the annular conductor connection end 41 of the relay terminal 40 is connected is electrically insulated. Is removed from the core wire 98, and the core wire 98 is partially exposed. Thereby, the oxidation of the core wire 98 exposed by removing the electrical insulation coating of the annular conductor can be prevented.
As described above, the timing of partial removal of the electrical insulation coating 99 is preferably immediately before the operation in which the annular conductor connecting end 41 of the relay terminal 40 is fitted to the core wire 98 of the annular conductor 12 and welded. The annular conductor connection end 41 of the relay terminal 40 can be stably welded to the core wire 98 that is prevented from being oxidized.

As shown in FIG. 9, in the holding component 33, since the electrically insulating partition walls 83 and 81 are formed between the annular conductor 12 and the adjacent annular conductors 11 and 13, the electrically insulating coating 99 of the annular conductor 12 is formed. Even if the core wire 98 is exposed by partially removing the core wire 98, electrical insulation between the exposed core wire 98 of the annular conductor 12 and the adjacent annular conductors 11 and 13 can be ensured. In addition, since the electrically insulating partition wall 84 of the holding component 33 is disposed between the annular conductors 10 and 11 and the coil connection end 42 of the relay terminal 40, the coil connection ends of the annular conductors 10 and 11 and the relay terminal 40 are arranged. Thus, electrical insulation with 42 can be ensured.

Finally, in FIG. 10, the annular conductors 10 to 13 are held at a predetermined interval by the holding component 33, and the annular conductor connecting end 41 of the relay terminal 40 is connected to the core wire 98 of the W-phase annular conductor 10. It is electrically and mechanically fixed by fitting and welding. However, the relay terminal 40 is used upside down as in the example of FIG.

The annular conductor connection end 41 of the relay terminal 40 is electrically fixed to the core wire 98 of the annular conductor 10. The coil connection end 42 of the relay terminal 40 is electrically and mechanically fixed to the connection protrusion 150 of the coil by welding. Thus, the V-phase annular conductor 10 is electrically connected to the connection protrusion 150 of the coil on one end side of the W-phase coil 102 via the relay terminal 40.

  For example, an enameled wire is preferably used as the annular conductor 13 as shown in FIG. The enameled wire has a core wire 98 and an electrical insulating coating 99 coated on the outer periphery of the core wire 98. The core wire 98 is, for example, a copper wire having a circular cross section, and the electrical insulation coating 99 is an enamel layer.

As shown in FIG. 10, immediately before the annular conductor 13 is electrically connected to the relay terminal 40, the portion of the annular conductor 13 to which the annular conductor connection end 41 of the relay terminal 40 is connected is electrically insulated. Is removed from the core wire 98, and the core wire 98 is partially exposed. Thereby, the oxidation of the core wire 98 exposed by removing the electrical insulation coating of the annular conductor can be prevented.
In this way, the timing of partial removal of the electrical insulation coating 99 is preferably immediately before the work of fitting the annular conductor connecting end 41 of the relay terminal 40 to the core wire 98 of the annular conductor 13 and welding. The annular conductor connection end 41 of the relay terminal 40 can be stably welded to the core wire 98 that is prevented from being oxidized.

As shown in FIG. 10, in the holding component 34, since an electrically insulating partition wall 81 is formed between the annular conductor 12 and the adjacent annular conductor 13, a part of the electrically insulating coating 99 on the annular conductor 13 is removed. Even if the core wire 98 is exposed, electrical insulation between the exposed core wire 98 of the annular conductor 13 and the adjacent annular conductor 12 can be ensured. Moreover, since the electrically insulating partition 82 of the holding component 34 is disposed between the annular conductors 10, 11, 12 and the coil connection end 42 of the relay terminal 40, the annular conductors 10, 11, 12 and the relay terminal 40 are arranged. It is possible to ensure electrical insulation with the coil connection end 42 of the coil.

In this way, electrical insulation between the annular conductors 10, 11, 12, 13 and the coil connection end 42 of the relay terminal 40 and the coil connection projection 150 can be ensured, and the annular conductor connection end 41 of the relay terminal 40 Even if the structure is such that the core wire 98 is directly and mechanically connected to the exposed core wire 98 from which the electrical insulating coating 99 has been removed, an electrical insulation state between the core wire 98 and the adjacent annular conductor can be ensured.

Next, with reference to FIG. 11 and FIG. 12, a structural example of the motor 300 in which the centralized power distribution component 1 is used will be described. The motor 300 includes a stator 200 and a rotor 201.

The rotor 201 has a plurality of driving magnets. The magnetic force of the magnet of the rotor 201, the U-phase coil 100, the V-phase coil 101, and the W-phase coil 1 of the stator 200.
The rotor 201 rotates about the center axis CL with respect to the stator 200 by the interaction with the magnetic flux generated by 02.

The stator 200 has a coil bobbin 220 and a stator core 221. The coil bobbin 220 has a ring-shaped accommodation portion 230 along the circumferential direction. This accommodating part 2
Reference numeral 30 denotes a portion that is located outside the coils 100, 101, and 102 and that houses the centralized power distribution component 1 shown in FIG.

A portion P1 in FIG. 11 shows the holding component 31 shown in FIG. 7 and its peripheral portion.
The part P2 shows the holding component 32 shown in FIG. 8 and its peripheral part. Part P of FIG.
3 shows the holding component 33 shown in FIG. 9 and its peripheral portion. In the portion P4 of FIG.
The holding | maintenance component 34 shown in FIG. 10 and its peripheral part are shown.

FIG. 13 shows characteristics when the relay terminal 40 is accommodated in the accommodating portion 230 in the upside down direction at the portions P3 and P4 as shown in FIG.

When the relay terminal 40 is accommodated in the accommodating portion 230 in the upside down direction, the relay terminal 40 shown in FIG.
A part of the connection part 43 hits the connection projection part 150 of the coil, and the concentrated wiring component 1 does not enter the housing part 230. In order to prevent this, as described above, the connecting portion 43 in FIG. 5 has an escape portion (retracted portion) 44. As a result, FIG.
As shown in FIG. 3A and FIG. 13B, when the concentrated wiring component 1 is accommodated in the accommodation portion 230 along the DN direction, a part of the connection portion 43 of the relay terminal 40 is connected to the coil. The concentrated wiring component 1 can be smoothly accommodated in the accommodating portion 230 without hitting the protruding portion 150.

If the concentrated wiring component 1 having such a structure is accommodated along the DN direction in the accommodating portion 230 of the stator 200 shown in FIGS. 11 and 12, each relay terminal 40 is connected to a coil at a corresponding position. As illustrated in FIG. 4, the protrusion 150 includes two coil connection ends 4 of the relay terminal 40.
2, 42. After that, as shown in FIG.
Is securely connected electrically and mechanically to the connection projection 150 of the coil while being pressed in the N direction.

Next, the assembly procedure of the concentrated wiring component 1 having the above-described structure will be described with reference to FIGS.
8 will be mainly described. 14 to 18, the annular conductors 10 to 13 are illustrated as linear conductors before being bent and assembled.

  FIG. 14A and FIG. 14B show procedures 1 and 2.

In procedure 1 shown in FIG. 14A, a plurality of holding components 32 are arranged at a predetermined interval by a jig (not shown). In the procedure 2 shown in FIG. 14A, the U-phase annular conductor 11 is formed as shown in FIG.
As shown in (B), these holding parts 32 are fitted into the receiving grooves 72. afterwards,
In the vicinity of the housing groove 72 of each holding component 32, the annular conductor connecting end 41 of the relay terminal 40 shown in FIG. 8 is engaged with the core wire 98 of the U-phase annular conductor 11 and welded in the mounting groove 80 of the relay terminal 40. . As a result, the core wire 98 of the U-phase annular conductor 11 and the relay terminal 40 are easily connected electrically and mechanically.

  FIG. 15A and FIG. 15B show procedures 3 and 4.

In the procedure 3 shown in FIG. 15A, the U-phase annular conductor 11 is fitted into the receiving grooves 71 of the plurality of holding components 33 as shown in FIG. Each holding component 33 is arranged at a predetermined interval with respect to the adjacent holding component 32. In procedure 4 shown in FIG. 15A, these holding parts 33 are maintained in a retracted state rotated 90 degrees in order to facilitate the work of the next procedure 5.

  FIG. 16A and FIG. 16B show procedures 5 and 6.

In step 5 shown in FIG. 16A, the V-phase annular conductor 12 is arranged in parallel to the U-phase annular conductor 11, and as shown in FIG. Is fitted into the receiving groove 71 of the holding part 32. In the procedure 6 shown in FIG.
Is returned to its original state, and the V-phase annular conductor 12 is connected to each holding component 33 as shown in FIG.
Is inserted into the receiving groove 72. As a result, the V-phase annular conductor 12 and the U-phase annular conductor 11 are held in parallel by the plurality of holding components 32 and 33.

  FIGS. 17A and 17B show procedures 7 and 8.

In step 7 shown in FIG. 17A, the U-phase annular conductor 11 and the V-phase annular conductor 12 are held by the plurality of holding components 31. That is, the U-phase annular conductor 11 and the V-phase annular conductor 12 are held in the accommodating groove 51 of the holding component 31 as shown in FIG. Thereby, the holding component 31 is arranged at a predetermined interval with respect to the adjacent holding component 32 or holding component 33,
The holding parts 31, 32, 31, 33, 31 are arranged in this order.

In Step 8 shown in FIG. 17B, the annular conductor 10 of the neutral phase is further replaced with the annular conductors 11 and 12.
Arranged parallel to The annular conductor 10 of the neutral phase is held in the receiving groove 50 of the holding component 31 as shown in FIG. 3A, and is held in the receiving groove 70 of the holding component 32 as shown in FIG. As shown in FIG. 3 (C), it is held in the receiving groove 71 of the holding component 33. Thereby, the annular conductor 10 of the neutral phase, the annular conductor 11 of the U phase, and the annular conductor 12 of the V phase are held by the holding components 31 and 32.
, 31, 33, 31... Are held in parallel at a predetermined interval.

  Next, FIGS. 18A and 18B show procedures 9 and 10.

In step 9 shown in FIG. 18A, a plurality of holding components 34 are further added, and each holding component 3 is added.
4 is arrange | positioned between the adjacent holding components 31 and 31. FIG.

In the procedure 10 shown in FIG. 18B, the W-phase annular conductor 13 is moved to the holding components 31 and 3.
2, 31, 33, 31, 34. That is, the W-phase annular conductor 13 is held in the receiving groove 51 of the holding component 31 as shown in FIG. 3A and held in the receiving groove 71 of the holding component 32 as shown in FIG. As shown in FIG. 3 (C), it is held in the receiving groove 70 of the holding component 33, and is held in the receiving groove 50 of the holding component 34 as shown in FIG. 3 (D). Thereby, the annular conductor 10 of the neutral phase, the annular conductor 11 of the U phase, the annular conductor 12 of the V phase and the annular conductor 13 of the W phase are held by the holding parts 31, 32, 31, 33, 31, 34. It is held so as to be integrated in parallel at a predetermined interval. Each relay terminal 40 and each annular conductor 1
The core wires 98 of 0, 11, 12, and 13 are electrically and mechanically fixed by welding.

The belt-like assembly configured as shown in FIG. 18B is bent into an annular shape as shown in FIG. 1 to connect both end portions 10C of the annular conductor 10 in the neutral phase. One end and the other end of the U-phase annular conductor 11, the V-phase annular conductor 12, and the W-phase annular conductor 13 are connected to power supply terminals 11D, 12D, and 13D, respectively. Thereby, the annular concentrated wiring component 1 as shown in FIG. 1 is obtained.

An annular concentrated wiring component 1 shown in FIG. 1 includes a coil bobbin 22 as shown in FIGS.
It is set by inserting it into the 0 accommodation groove 230 along the DN direction. When the concentrated wiring component 1 is set in the accommodating portion 230, the coil connection ends 42 of the relay terminals 40 are positioned on both sides of the contact end portion 150 of the coil, as shown in FIGS. Then, as shown in FIG. 6, the coil connection end 42 of each relay terminal 40 is welded while being pressed against the contact end 150 of the coil.

Thus, the U-phase annular conductor 11, the V-phase annular conductor 12, and the W-phase annular conductor 13 are
The one end of each of the coils 100, 101, 102 is electrically and mechanically connected via the relay terminal 40. In addition, the neutral-phase annular conductor 10 includes coils 100, 101,
The other end of 102 is electrically and mechanically connected via the relay terminal 40.

In the embodiment of the present invention, as shown in FIGS. 11 and 12, the height F of the coil contact end 150 with respect to the bottom 229 of the coil bobbin 220 is the extraction height of the coils 100, 101 · BR> C102. The height F can be made constant at any position of the portions P1 and P2 in FIG. 11 and the portions P3 and P4 in FIG. The reason for this is that even if the height F of the contact end 150 of the coil is the same, the region where the coil connection end 42 of the relay terminal 40 corresponding to the contact end 150 of the coil can be welded and fixed without fail. This is because it is provided with a margin along a direction DN parallel to the central axis CL, as indicated by a distance G shown in FIG.

Thereby, although each of the annular conductors 10, 11, 12, 13 has a structure in which the annular conductors 10, 11, 12, 13 are arranged at intervals in the central axis CL direction, each of the annular conductors 10, 11, 12, 13 uses the relay terminal 40. Thus, it can be easily electrically and mechanically connected to the contact end 150 of the coil having the height F at the same position.

  Since the core wire 98 of each of the annular conductors 10, 11, 12, and 13 is previously covered with the electrical insulating film 99 over the entire length of the core wire 98, the annular conductors 10, 11, 12, and 13 are formed by bending into a circular shape. Thus, it is possible to prevent the core wire 98 from being oxidized during the operation of holding the holding members 31 to 34. And just before the operation | work which the annular conductor connection end 41 of the relay terminal 40 fits and welds with respect to the core wire 98 of the annular conductors 10, 11, 12, and 13 should just remove a part of electrical insulation coating 99. FIG. For this reason, the exposed portion of the core wire 98 can be minimized, and oxidation of the core wire 98 can be prevented as much as possible.

  7 to 10, the width at which the electrical insulating film 99 is removed or peeled from the core wire 98 is the same as or slightly larger than the width of the annular conductor connection end 41 of the relay terminal 40. Thereby, the amount of the electrical insulating coating 99 removed or peeled off from the core wire 98 can be minimized.

A centralized power distribution component 1 according to an embodiment of the present invention includes a plurality of annular conductors 10, 11, 12, 13 and a plurality of annular conductors arranged in the axial direction of the annular conductor and spaced from each other. A plurality of holding parts 31 to 34 that integrally hold the annular conductor, and a plurality of relay terminals 40 that are respectively electrically connected to the plurality of annular conductors held by the plurality of holding parts. Each of the annular conductors 10, 11, 12, and 13 has a core wire 98 and an electrical insulation coating 99 that covers the outer periphery of the core wire 98. The annular conductor is electrically connected to the relay terminal 40. When connected to, the electrical insulation coating 99 of the portion to which the annular conductor relay terminal 40 is connected is removed from the core wire 98.

  Thereby, the length of the annular conductor can be shortened, and the centralized distribution component can be reduced in size while ensuring the electrical insulation between the adjacent annular conductors. By downsizing the centralized power distribution component, the motor can be downsized. In addition, when the annular conductor is electrically connected to the relay terminal by using the annular conductor having the core wire and the electrical insulation coating provided on the core wire, the electricity of the portion where the relay terminal of the annular conductor is connected is connected. Since the insulating coating is removed from the core wire, oxidation of the core wire of the annular conductor can be prevented.

  In the concentrated power distribution component 1 according to the embodiment of the present invention, the annular conductors 10, 11, 12, and 13 are formed by bending a linear conductor. Thereby, since the annular conductor is not formed by punching the copper plate, the remaining portion generated after the copper plate is punched does not occur, and the material cost and the processing cost can be reduced.

  In the concentrated power distribution component 1 of the embodiment of the present invention, enameled wires are preferably used as the annular conductors 10, 11, 12, and 13, and the relay terminal 40 and the core wire 98 are electrically and mechanically connected by welding. The Thereby, the oxidation of the core wire 98 can be prevented, and the relay terminal 40 can stably perform welding on the core wire 98 in which the oxidation is prevented.

In the centralized power distribution component 1 according to the embodiment of the present invention, the inner diameters of the plurality of annular conductors are substantially the same, and a circular space is formed inside the plurality of annular conductors. Accordingly, it is sufficient to prepare an annular conductor having the same length, the length of the linear conductor constituting the annular conductor can be minimized, and the material cost and the processing cost can be reduced.

The relay terminal 40 of the centralized power distribution component 1 according to the embodiment of the present invention includes an annular conductor connection end 41 that is electrically connected by being engaged with and welded to the core conductor 98 of the annular conductor, and a contact end portion of the stator coil. A coil connection end 42 electrically connected to 150 and a coil connection end 4
2 and an annular conductor connecting end 41. Accordingly, the core conductor 98 of the annular conductor and the contact end portion 150 of the coil can be easily and mechanically connected simply by using the relay terminal 40.

In the concentrated power distribution component 1 of the embodiment of the present invention, the coil connection end 42 of the relay terminal 40 has a region that can be connected to the contact end 150 of the coil along the axial direction of the annular conductor. Thereby, although the positions of the annular conductors 10 to 13 are different along the central axis CL, the relay terminal 40 is used.
One type can be used, the number of parts can be reduced, and material costs and processing costs can be reduced.

In the centralized power distribution component 1 of the embodiment of the present invention, each holding component 31 to 34 is electrically insulated between the coil connection end 42 of the relay terminal 40 and the plurality of annular conductors 10 to 13 held by the holding component. Electrical insulating portions 81 to 84 (see FIGS. 7 to 10) for ensuring the above. Thereby, the distance between the relay terminal 40 and the annular conductors 10 to 13 can be shortened as much as possible, and downsizing can be achieved while ensuring electrical insulation.

In the embodiment of the present invention, as shown in FIG. 5, in order to avoid the contact end portion 150 of the coil from hitting the connection portion 43 of the relay terminal 40 when the centralized power distribution component 1 is disposed in the housing portion 230 of the stator. In addition, a relief portion 44 is formed in the connection portion 43. As a result, when the concentrated power distribution component 1 is disposed in the stator housing portion 230, the coil contact end portion 150 is connected to the relay terminal 40.
The centralized power distribution component 1 can be smoothly mounted in the stator accommodating portion 230.

  By the way, this invention is not limited to the said embodiment, A various modified example is employable.

The enameled wire is used as each annular conductor of the concentrated power distribution component described above. However, the core wire is not limited to this, and the core wire is particularly suitable as long as it has a conductive metal core wire and an electrically insulating coating covering the core wire. The material of the electrical insulation coating is not limited.
For example, the annular conductors 10, 11, 12, and 13 of the neutral phase, the U phase, the V phase, and the W phase have the same diameter, but if necessary, the annular conductors 11, 12, and 13 and the annular conductor 10 The thickness may be different. Further, the annular conductor 10 may be provided at a position different from that of the other annular conductors 11, 12, 13, and the concentrated power distribution component 1 may be configured by the annular conductors 11, 12, 13.

  The annular conductor 3 is a conductor having a circular cross section, but is not limited thereto, and may have another shape, for example, a rectangular cross section.

It is a perspective view which shows preferable embodiment of the concentrated power distribution components of this invention. It is a figure which shows the example of a connection of the annular conductor of U phase, V phase, and W phase, the annular conductor of a neutral phase, and a coil. It is a figure which shows the example of a shape of two types of holding components. It is a figure which shows the assembly example of a holding | maintenance component, a relay terminal, and four annular conductors. It is a figure which shows the example of a shape of a relay terminal. It is a figure which shows the example which has connected the relay terminal and the connection protrusion part of the coil electrically and mechanically. It is a figure which shows the assembly structure of a cyclic | annular conductor, a holding component, and a relay terminal. It is a figure which shows the assembly structure of a cyclic | annular conductor, a holding component, and a relay terminal. It is a figure which shows the assembly structure of a cyclic | annular conductor, a holding component, and a relay terminal. It is a figure which shows the assembly structure of a cyclic | annular conductor, a holding component, and a relay terminal. It is a figure which shows the example of a cross-section of a motor. It is a figure which shows the example of a cross-section of a motor. It is a figure which shows the structure which prevents that a relay terminal and the connection projection part of a coil contact | win. It is a figure which shows the assembly procedures 1 and 2 of concentrated power distribution components. It is a figure which shows the assembly procedures 3 and 4 of concentrated power distribution components. It is a figure which shows the assembly procedures 5 and 6 of concentrated power distribution components. It is a figure which shows the assembly procedures 7 and 8 of concentrated power distribution components. It is a figure which shows the assembly procedures 9 and 10 of concentration distribution parts.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Concentrated wiring component 10 Ring conductor corresponding to neutral phase 11 Ring conductor corresponding to U phase 12 Ring conductor corresponding to V phase 13 Ring conductor corresponding to W phase 31-34 Holding parts (holder)
40 Relay terminal 41 Ring conductor connection end 42 Coil connection end 44 Escape part (retreat part)
98 Core wire 99 Electrical insulation coating 150 Coil contact end portion 200 Stator 201 Rotor 230 Concentrated wiring component housing portion 300 Motor

Claims (10)

A centralized power distribution component disposed on the stator of the motor and electrically connected to the coil of the stator,
A plurality of annular conductors each having a core wire and an electrical insulation coating provided on the core wire;
A plurality of holding parts that integrally hold the plurality of annular conductors in a state where the plurality of annular conductors are arranged at intervals from each other along the axial direction of the annular conductor;
A plurality of relay terminals electrically connected to the plurality of annular conductors held by the plurality of holding parts, respectively;
With
The concentration is characterized in that when the annular conductor is electrically connected to the relay terminal, the electrical insulation coating of the portion of the annular conductor to which the relay terminal is connected is removed from the core wire. Power distribution parts.   The concentrated power distribution component according to claim 1, wherein the annular conductor is formed by bending a linear conductor.   The concentrated power distribution component according to claim 2, wherein the annular conductor is an enameled wire, and the relay terminal and the core wire are electrically and mechanically connected by welding.   4. The centralized power distribution component according to claim 2, wherein each of the plurality of annular conductors has substantially the same inner diameter, and a circular space is formed inside the plurality of annular conductors. The relay terminal is
An annular conductor connecting end electrically connected by engaging with the core wire of the annular conductor;
A coil connection end electrically connected to the contact end of the stator coil;
The centralized power distribution component according to claim 3, further comprising a connection portion that connects the coil connection end and the annular conductor connection end.   The concentrated power distribution component according to claim 5, wherein the coil connection end of the relay terminal has a region connectable to a contact end portion of the coil along an axial direction of the annular conductor. .   Each said holding component has an electrical insulation part between the said coil connection end of the said relay terminal, and these cyclic | annular conductors hold | maintained by the said holding component, The Claim 5 or Claim 6 characterized by the above-mentioned. The centralized power distribution component described.   In order to prevent the contact end portion of the coil from hitting the connection portion of the relay terminal when the concentrated power distribution component is arranged in the housing portion of the stator, a relief portion is formed in the connection portion. The centralized power distribution component according to claim 5.   The plurality of annular conductors include at least a U-phase annular conductor, a V-phase annular conductor, and a W-phase annular conductor of a three-phase brushless motor. The centralized power distribution component described. The concentrated power distribution component according to claim 9, wherein the plurality of annular conductors further includes the neutral phase annular conductor.

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