JP2007318923A - Intensive power distribution component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide compact intensive power distribution components that reduces the length of an annular conductor while securing electrical insulation between adjacent annular conductors. <P>SOLUTION: This intensive power distribution components are provided with a plurality of the annular conductors 10, 11, 12, 13; a plurality of retaining components 31-34 that retain a plurality of the annular conductors 10, 11, 12, 13 integrally, while the annular conductors 10, 11, 12, 13 are arranged along the axial direction CL of the annular conductors at intervals; and a plurality of relay terminals 40 that are electrically connected separately to each of the annular conductors 10, 11, 12, 13 retained by the retaining components 31-34. <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. The hybrid car uses an engine using fossil fuel as the main power source of the automobile and includes a motor assist mechanism for assisting the engine.

  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 accommodation space becomes large, and an increase in the size of the motor is inevitable.

  Accordingly, in order to solve the above-mentioned problems, the present invention provides a centralized power distribution component that can reduce the length of the annular conductors and can be miniaturized while ensuring electrical insulation between the adjacent annular conductors. With the goal.

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 is electrically connected to the coil of the stator,
A plurality of annular conductors;
A plurality of holding parts for integrally holding 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;
It is characterized by providing.

  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 having an electrically insulating coating.

  The concentrated power distribution component according to the present invention is preferably characterized in that the electrical insulation coating is removed from a core wire of the annular conductor at an electrical connection portion between the annular conductor and the relay terminal.

  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 concentrated power distribution component of the present invention, the length of the annular conductor can be shortened, and the miniaturization can be achieved while ensuring the electrical insulation between the adjacent annular conductors.

  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 a core, a stator holder that houses these magnetic poles, and a power distribution system for the plurality of phase coils. It has a centralized power distribution component 1.

  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, and 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 for holding the annular conductors 11, 12, 13 and the annular conductor 10 in parallel with a space between the annular conductors 11, 12, 13 and the annular conductor 10. It is a holding member.

  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, It is arranged in the order of 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. Accordingly, the holding parts 31, 32, 33, and 34 are used in four modes corresponding to the four annular conductors 10 to 13, but it is only necessary to prepare two types of shapes. As a result, two types of holding parts are not required, but two types are required, so the types of parts can be reduced and costs 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. 3D is a groove for receiving the annular conductors 10, 11, and 12 of FIG. 1, and the annular conductor receiving groove 50 of the holding component 34 is It is a groove | channel 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 include 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.

  An annular conductor receiving groove 71 of the holding component 33 shown in FIG. 3C is a groove for receiving the annular conductors 10 and 11 of FIG. 1, and the annular conductor receiving groove 70 of the holding component 33 is shown in FIG. This is a groove for accommodating the annular conductor 13. 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. As a result, the types of relay terminals to be used can be reduced, and the cost can be reduced. The relay terminal 40 is, for example, a copper base material 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, an example of the assembly structure of the annular conductors 10 to 13, the holding components 31, 32, 33, and 34 and the relay terminal 40 will be described with reference to FIGS. 7 to 10.

  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. The core wire 98 is exposed by partially removing the electrical insulating coating 99. 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 an electrically insulating partition 81 is formed between the annular conductor 10 and the adjacent annular conductor 11, the electrical connection between the annular conductor 10 and the adjacent annular conductor 11 is performed. Insulation 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. 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 annular conductor 11 and the adjacent annular conductor are formed. Electrical insulation between 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, unlike the example of FIGS. 7 and 8, the relay terminal 40 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.

  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 annular conductor 12 and the adjacent annular conductor are formed. Electrical insulation between 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.

  As shown in FIG. 10, in the holding component 34, since an electrically insulating partition 81 is formed between the annular conductor 12 and the adjacent annular conductor 13, the gap between the annular conductor 12 and the adjacent annular conductor 13 is formed. Electrical insulation 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.

  Thus, electrical insulation between the annular conductors 11, 12, 13, 13 and the coil connection end 42 of the relay terminal 40 and the connection projection 150 of the coil can be secured, and the annular conductor connection end 41 of the relay terminal 40 Even in the structure connected to the core wire 98, an electrical insulation state between the core wire 98 and the adjacent annular conductor can be secured.

  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. Due to the interaction between the magnetic force of the magnet of the rotor 201 and the magnetic flux generated by the U-phase coil 100, V-phase coil 101, and W-phase coil 102 of the stator 200, the rotor 201 has a central axis CL with respect to the stator 200. It is designed to rotate around the center.

  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. The accommodating portion 230 is located outside the coils 100, 101, and 102, and is a portion that accommodates the concentrated power distribution component 1 shown in FIG.

  A portion P1 in FIG. 11 shows the holding component 31 and its peripheral portion shown in FIG. 7, and a portion P2 in FIG. 11 shows the holding component 32 and its peripheral portion shown in FIG. A portion P3 in FIG. 12 shows the holding component 33 and its peripheral portion shown in FIG. 9, and a portion P4 in FIG. 12 shows the holding component 34 and its peripheral portion shown in FIG.

  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 housed in the housing portion 230 upside down, a part of the connection portion 43 of the relay terminal 40 shown in FIG. It will not enter the accommodating part 230. In order to prevent this, as described above, the connecting portion 43 in FIG. 5 has an escape portion (retracted portion) 44. Accordingly, as shown in FIGS. 13A and 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 provided. However, the concentrated wiring component 1 can be smoothly accommodated in the accommodating portion 230 without hitting the connection projection 150 of the coil.

  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 is positioned between the two coil connection ends 42 and 42 of the relay terminal 40. Thereafter, as shown in FIG. 6, the two coil connection ends 42 and 42 are securely and electrically and mechanically connected 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 mainly to FIGS. 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 fitted into the receiving grooves 72 of these holding parts 32 as shown in FIG. 3B. Thereafter, in the vicinity of the receiving 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 in the mounting groove 80 of the relay terminal 40 and welded. Is done. 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. 16B, the holding parts 33 that have been saved are returned to their original states, and the V-phase annular conductors 12 are accommodated in the receiving grooves of the holding parts 33 as shown in FIG. 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. Accordingly, the holding component 31 is arranged at a predetermined interval with respect to the adjacent holding component 32 or the holding component 33, and is arranged in the order of the holding components 31, 32, 31, 33, 31.

  In step 8 shown in FIG. 17B, a neutral-phase annular conductor 10 is further arranged in parallel to the annular conductors 11 and 12. 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 in parallel by the holding components 31, 32, 31, 33, 31. Is done.

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

  In procedure 9 shown in FIG. 18A, a plurality of holding components 34 are further added, and each holding component 34 is disposed between adjacent holding components 31 and 31.

  In the procedure 10 shown in FIG. 18B, the W-phase annular conductor 13 is held with respect to the holding components 31, 32, 31, 33, 31, and 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 the core wire 98 of each annular conductor 10, 11, 12, 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.

  The annular concentrated wiring component 1 shown in FIG. 1 is set by inserting it into the accommodation groove 230 of the coil bobbin 220 along the DN direction, as shown in FIGS. 11 and 12. 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 electrically connected to the one end portions of the coils 100, 101, 102 via the relay terminals 40, respectively. Mechanically connected. Further, the neutral-phase annular conductor 10 is electrically and mechanically connected to the other end portions of the coils 100, 101, 102 via the relay terminals 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, 102. 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.

  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. Thereby, the length of an annular conductor can be shortened, and centralized distribution parts can be reduced in size while ensuring electrical insulation between adjacent annular conductors. By downsizing the centralized power distribution component, the motor can be downsized.

  In the concentrated power distribution component 1 of the embodiment of the present invention, the annular conductors 10, 11, 12, and 13 are formed by bending a linear conductor having an electrical insulation coating. 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 according to the embodiment of the present invention, the electrical insulation coating 99 is removed from the core conductor 98 of the annular conductor at the electrical connection portion between the annular conductors 10, 11, 12, 13 and the relay terminal 40. Thus, the electrical connection and the mechanical connection between the core conductor 98 of the annular conductor and the relay terminal 40 can be reliably obtained by simply removing the electrical insulation coating.

  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. The coil connection end 42 is electrically connected to 150, and the connection portion 43 connects the coil connection end 42 and the annular conductor connection 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 position of each cyclic | annular conductor 10-13 differs along the central axis CL, it is only necessary to use one kind of relay terminal 40, the kind of parts can be reduced, and material cost and processing cost 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. This prevents the contact end portion 150 of the coil from hitting the connection portion 43 of the relay terminal 40 when the central power distribution component 1 is arranged in the stator housing portion 230, and the central power distribution component 1 can be smoothly connected to the stator. It can be mounted in the housing portion 230 of the.

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

  For example, the annular conductors 11, 12, 13, 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, 13 and the annular conductor 10 The thickness may be different. Further, the annular conductor 10 may be provided at a position different from the other annular conductors 11, 12, 13, and the concentrated power distribution component 1 may be configured by the annular conductors 11, 12, 13, 13.

  In addition, the annular conductors 11, 12, 13, and 13 are conductors having a circular cross section, but are not limited to this, and may have other shapes, 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
98 Core wire 99 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;
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;
Centralized power distribution component characterized by comprising. 2. The concentrated power distribution component according to claim 1, wherein the annular conductor is formed by bending a linear conductor having an electrical insulation coating. The centralized power distribution component according to claim 2, wherein the electrical insulation coating is removed from a core wire of the annular conductor at an electrical connection portion between the annular conductor and the relay terminal. 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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