WO2017056887A1

WO2017056887A1 - Conductive path with noise filter

Info

Publication number: WO2017056887A1
Application number: PCT/JP2016/076277
Authority: WO
Inventors: 啓二平田; 武史相澤
Original assignee: 株式会社オートネットワーク技術研究所; 住友電装株式会社; 住友電気工業株式会社
Priority date: 2015-09-28
Filing date: 2016-09-07
Publication date: 2017-04-06
Also published as: JP2017069602A

Abstract

In order to protect the part connecting a magnetic core and a connection wire, this conductive path with noise filter (A) is provided with multiple conductive path bodies (11u, 11v, 11w), multiple capacitors (17u, 17v, 17w) provided on the multiple conductive path bodies (11u, 11v, 11w), multiple connection wires (48) individually connected to the capacitors (17u, 17v, 17w), a magnetic core (34) in which a through-hole (36) is formed, a case (21) which houses the magnetic core (34), and a connection means (37) which maintains the multiple connection wires (48), inserted through the through-hole, in a state connected to each other inside of the case (21).

Description

Conductive path with noise filter

The present invention relates to a conductive path with a noise filter.

In Patent Document 1, a wire harness composed of three electric wires constituting a three-phase AC circuit is routed between a motor of an electric vehicle and an inverter device, and the wire harness is braided as a noise countermeasure in the wire harness. And a technique for connecting both ends of the braided wire to the shield case of the motor and the shield case of the inverter device. Thus, if a wire harness is shielded with a braided wire, the noise emitted from a motor, an inverter apparatus, and a wire harness can be prevented from affecting peripheral devices and circuits.

JP 2010-126043 A

As described above, it is difficult to reduce the surge noise in the specific frequency band generated by the inverter device by the method of surrounding the three wires with the braided wire. Therefore, by providing capacitors on the three wires individually, externally fitting the magnetic core to the connection wires connected to each capacitor, and star connecting the three connection wires, surge noise can be reduced. It is possible to reduce.

However, with this surge noise countermeasure, there is a concern that the magnetic core externally fitted to the connection line for connection may be damaged due to interference with other members. Moreover, there is a concern that the connection portions of the three connection wires may be disconnected due to interference with other members.

The present invention has been completed based on the above situation, and an object thereof is to protect the connection portion of the magnetic core and the connection line for connection.

The conductive path with a noise filter of the present invention is
A plurality of conductive path bodies;
A plurality of capacitors provided in the plurality of conductive path bodies;
A plurality of connection lines individually connected to the plurality of capacitors;
A magnetic core having an insertion hole;
A case for housing the magnetic core;
It has a feature in that it comprises connection means for holding the plurality of connection wires inserted through the insertion hole in a state of being connected in the case.

Since the magnetic core is housed in the case, it is protected from interference by other members. Moreover, since the connection part of the connection line for connection is also accommodated in the case, it is protected from interference by other members.

Configuration diagram of conductive path with noise filter of Example 1 XX sectional view of FIG. Side sectional view of the module for connection YY sectional view of FIG. Configuration diagram of conductive path with noise filter of Example 2 Side sectional view of the module for connection Configuration diagram of conductive path with noise filter of Example 3

(A) In the conductive path with a noise filter of the present invention, a plurality of the insertion holes may be formed in one magnetic core.
According to this configuration, since the number of magnetic cores can be made smaller than the number of connection wires, the number of parts can be reduced compared to the case where one connection wire is inserted into one magnetic core. can do.

(B) In the conductive path with a noise filter of the present invention, the magnetic core has a disk shape having a connection space in the center, and the plurality of insertion holes extend from the connection space to the outer periphery of the magnetic core. The plurality of connection connection wires may be star-connected in the connection space.
According to this configuration, since the insertion ends of the plurality of connection wires inserted into the insertion hole from the outer peripheral side of the magnetic core are guided into the connection space by the insertion hole, the connection wires for connection in the connection space The workability when performing the positioning work and the connecting work between the connecting connecting wires is good.

(C) In the conductive path with a noise filter of the present invention according to (B), the connection means includes a bolt that penetrates the connection space, and a nut that can be screwed into the bolt. The plurality of connection wires for connection abutted on the outer periphery may be connected by being sandwiched between the head of the bolt and the nut.
According to this configuration, positioning can be performed by abutting the plurality of connection wires inserted into the insertion holes against the outer periphery of the bolt.

(D) The conductive path with a noise filter according to the present invention is the conductive path with a noise filter according to (C), wherein the connection means has conductivity and is connected in a state where the plurality of connection connection lines are sandwiched. May be provided.
According to this configuration, a plurality of connection lines can be easily and reliably connected.

(E) In the conductive path with a noise filter according to the present invention, in (C) or (D), the case includes a pair of case components that can be combined in the axial direction of the bolt, and the pair of cases The structural body may be united in a state of being sandwiched between the bolt and the nut.
According to this structure, the operation | work which fixes a case structure to a united state and the operation | work which connects the connecting wire for a connection can be performed by one action.

(F) In the conductive path with a noise filter of the present invention, in (C) to (E), the conductive path main body is routed between devices, and is connected to a conductive casing of the device. The housing connection terminal fitting may be connected to the connection connection line in a state of being sandwiched between the bolt and the nut.
According to this configuration, the connection work of the connection line and the work of connecting the housing connection terminal fitting to the connection line can be performed with one action.

<Example 1>
A first embodiment embodying the present invention will be described below with reference to FIGS. The conductive path A with a noise filter of the first embodiment includes a motor 60 (equipment described in claims) and an inverter device 62 (equipment described in claims) mounted on an electric vehicle such as an electric vehicle or a hybrid vehicle. It will be routed between them. The conductive path A with a noise filter includes a U-phase line 11u (conductive path body described in claims), a V-phase line 11v (conductive path body described in claims), and a W-phase line 11w constituting the three-phase AC circuit 10. (Conducting path body described in claims), surge reducing filter 13, connection module 20, and shield layer 18.

<Conductive path body (U-phase wire 11u, V-phase wire 11v, W-phase wire 11w)>
Each of the U-phase wire 11u, the V-phase wire 11v, and the W-phase wire 11w is made of a stranded wire or a single core wire made of metal (copper, copper alloy, aluminum, aluminum alloy, etc.). The outer periphery of the U-phase wire 11u is surrounded by a U-phase insulating coating 12u made of synthetic resin. The outer periphery of the V-phase wire 11v is surrounded by a V-phase insulating coating 12v made of synthetic resin. The outer periphery of the W-phase wire 11w is surrounded by a W-phase insulating coating 12w made of synthetic resin. That is, the U-phase wire 11u and the U-phase insulating coating 12u constitute one covered electric wire. The V-phase wire 11v and the V-phase insulating coating 12v constitute one covered electric wire. The W-phase wire 11w and the W-phase insulation coating 12w constitute one covered electric wire.

The U-phase wire 11u, the V-phase wire 11v, and the W-phase wire 11w are routed in parallel. One end of the U-phase wire 11u, the V-phase wire 11v, and the W-phase wire 11w is connected to an inverter circuit (not shown) of the inverter device 62. The inverter circuit is accommodated in a conductive inverter case 63 having a shielding function (conductive casing according to the claims). The other ends of the U-phase wire 11u, the V-phase wire 11v, and the W-phase wire 11w are connected to the winding of the motor 60. The winding is housed inside a conductive motor case 61 having a shielding function (conductive casing according to the claims).

<Surge reduction filter 13>
The surge reduction filter 13 includes a U-phase capacitor 17u (claimed capacitor), a V-phase capacitor 17v (claimed capacitor), and a W-phase capacitor 17w (claimed capacitor). I have. The U-phase capacitor 17u is configured by surrounding the U-phase wire 11u and the U-phase insulating coating 12u with a cylindrical U-phase conductor layer 16u. In other words, the U-phase conductor layer 16u is in a positional relationship facing the U-phase wire 11u in the proximity of the U-phase insulating coating 12u. Therefore, U-phase capacitor 17u is constituted by U-phase wire 11u, U-phase insulating coating 12u, and U-phase conductor layer 16u, and U-phase wire 11u and U-phase conductor layer 16u function as electrodes. The U-phase conductor layer 16u is made of a sheet-like or tape-like metal foil made of copper, copper alloy, aluminum, aluminum alloy, or the like. The outer periphery of the U-phase conductor layer 16u is covered with an insulating coating, an insulating coating, or the like.

The V-phase capacitor 17v is configured by surrounding the V-phase wire 11v and the V-phase insulating coating 12v with a cylindrical V-phase conductor layer 16v. In other words, the V-phase conductor layer 16v is in a positional relationship facing the V-phase line 11v in proximity to the V-phase insulating coating 12v. Therefore, the V-phase capacitor 11v is constituted by the V-phase wire 11v, the V-phase insulating coating 12v, and the V-phase conductor layer 16v, and the V-phase wire 11v and the V-phase conductor layer 16v function as electrodes. Similarly to the U-phase conductor layer 16u, the V-phase conductor layer 16v is also made of a metal foil. The outer periphery of the V-phase conductor layer 16v is covered with an insulating coating, an insulating coating, or the like.

The W-phase capacitor 17w is configured by surrounding the W-phase wire 11w and the W-phase insulating coating 12w with a cylindrical W-phase conductor layer 16w. In other words, the W-phase conductor layer 16w has a positional relationship in which the W-phase insulating coating 12w is located close to and opposed to the W-phase wire 11w. Therefore, the W-phase capacitor 11w is constituted by the W-phase wire 11w, the W-phase insulating coating 12w, and the W-phase conductor layer 16w, and the W-phase wire 11w and the W-phase conductor layer 16w function as electrodes. Similarly to the U-phase conductor layer 16u, the W-phase conductor layer 16w is also made of a metal foil. The outer periphery of the W-phase conductor layer 16w is covered with an insulating coating, an insulating coating, or the like.

<Overall configuration of connection module 20>
As shown in FIGS. 3 and 4, the connection module 20 includes a case 21, a magnetic core 34 (for example, a ferrite core) that functions as a noise filter, three connection connection lines 48, and three connections. A connection means 37 for connecting the connection line 48, a case connection terminal fitting 52, and a single case connection line 56 are provided.

<Case 21>
The case 21 has a circular shape in plan view, and includes a case body 22 made of synthetic resin (case 21 constituent body) and a cover 30 made of synthetic resin (case 21 structure described in the claim). Body). The case main body 22 includes a circular bottom wall portion 23 and a circular peripheral wall portion 24 that rises from the outer peripheral edge of the bottom wall portion 23. The inside of the cover 30 main body is a circular accommodation space 25 opened to the upper surface.

On the upper surface of the bottom wall portion 23 (inside the accommodation space 25), an annular core accommodation recess 26 is formed. A regular hexagonal fitting hole 27 is formed at the center of the lower surface of the bottom wall portion 23 (the outer bottom surface of the case 21). A circular lower through hole 28 that communicates from the fitting hole 27 to the accommodation space 25 is formed at the center of the bottom wall portion 23. The peripheral wall portion 24 is formed with three entry holes 29 penetrating from the inner periphery to the outer periphery with an equiangular interval of 120 ° in the circumferential direction.

The cover 30 has a thick disk shape capable of closing the opening on the upper surface of the case body 22. Inside the cover 30, a terminal accommodating chamber 31 that extends in the radial direction from the center of the cover 30 and opens to the outer peripheral surface of the cover 30 is formed. A circular upper through hole 32 that communicates from the upper surface of the cover 30 into the terminal accommodating chamber 31 and a circular communication hole 33 that communicates from the lower surface of the cover 30 to the terminal accommodating chamber 31 are formed at the center of the cover 30. Has been. When the cover 30 is assembled to the upper end portion of the case main body 22, the interior of the accommodation space 25 is closed.

<Magnetic core 34>
The magnetic core 34 is an annular single component whose axis is directed in the vertical direction (that is, coaxial with the case 21). A concentric circular connection space 35 penetrating from the upper surface to the lower surface of the magnetic core 34 is formed at the center of the magnetic core 34. The magnetic core 34 is formed with three insertion holes 36 that extend radially outward from the center of the connection space 35 and open to the outer peripheral surface of the magnetic core 34. The three insertion holes 36 are formed at equal angular intervals of 120 ° in the circumferential direction, like the three entry holes 29 formed in the case 21. The cross-sectional shape of each insertion hole 36 is circular, and the inner diameter of the insertion hole 36 is approximately the same as the inner diameter of the entry hole 29.

The magnetic core 34 is housed in the housing space 25 of the case body 22 with its lower end fitted into the core housing recess 26. The accommodated magnetic core 34 is positioned in the radial direction by bringing its outer peripheral surface into contact with the inner peripheral surface of the peripheral wall 24. Further, the openings of the three insertion holes 36 on the outer peripheral surface of the magnetic core 34 are positioned so as to be aligned (corresponding) with the three entry holes 29 of the case 21.

<Connection means 37>
The connection means 37 includes a bolt 38, a nut 42, a washer 43, three

spacers

44, 45, 46, and a pair of clamping members 47. The bolt 38 includes a cylindrical shaft portion 39 whose axis is directed in the vertical direction, a head 40 formed on the lower end portion (one end portion) of the shaft portion 39 and having a regular hexagonal outer periphery, It is a metal single part provided with the external thread part 41 formed in the upper end part (the other end part). The bolt 38 is attached to the case 21 in a state where the shaft portion 39 is inserted from the bottom of the case 21 into the lower through hole 28 and the head portion 40 is fitted into the fitting hole 27 so as not to be relatively rotatable. The shaft portion 39 is inserted through the accommodation space 25, the connection space 35, the communication hole 33, the terminal accommodation chamber 31, and the upper through hole 32. The male screw portion 41 protrudes above the case 21 (cover 30), and a nut 42 is screwed into the protruding male screw portion 41. A washer 43 having a larger diameter than the nut 42 is interposed between the nut 42 and the upper surface of the cover 30.

The three

spacers

44, 45, and 46 are all cylindrical metal parts having an inner diameter that is substantially the same as the outer diameter of the shaft portion 39, and are externally fitted to the shaft portion 39 in a state where they are aligned vertically. The pair of pinching members 47 are metal parts having a disk shape concentric with the shaft portion 39, and are fitted on the shaft portion 39. The first spacer 44 located at the bottom is inserted into the lower through hole 28 while being placed on the upper surface of the head 40, and the upper end of the first spacer 44 faces the accommodation space 25 and the connection space 35. It is out.

The lower pressing member 47 is placed on the upper end of the first spacer 44 so as to be conductive. On the upper surface of the lower pressing member 47, a conductive wire 49 of a connection wire 48 to be described later is placed so as to be conductive, and on the upper surface of the conductive wire 49, the upper pressing member 47 is placed so as to be conductive. Is placed. A second spacer 45 is placed on the upper surface of the upper clamping member 47 so as to be conductive. On the upper surface of the second spacer 45, a plate-like connecting portion 53 of a case connecting terminal fitting 52 described later is placed so as to be conductive. A third spacer 46 is placed on the upper surface of the plate-like connection portion 53 so as to be conductive. The washer 43 is placed on the upper surface of the third spacer 46.

<Connection line 48 for connection>
The connection wire 48 is composed of a covered electric wire in which a conductive wire 49 made of a metal single core wire is surrounded by an insulating coating 50. As shown in FIG. 1, one terminal portion of the three connection wires 48 functions as a U-phase conductor layer 16u that functions as an electrode of a U-phase capacitor 17u and an electrode of a V-phase capacitor 17v. The V-phase conductor layer 16v and the W-phase conductor layer 16w functioning as an electrode of the W-phase capacitor 17w are connected to the end on the motor 60 side.

The other end of the three connection wires 48 is inserted into the case 21 with the insulating coating 50 removed and the conductive wires 49 exposed. That is, the terminal portions of the three connection wires 48 are individually inserted into the three entry holes 29 and the three insertion holes 36 from the outside of the case 21. Of the three connection wires 48 for connection, the exposed end portion of the conductive wire 49 functions as the connection portion 51.

In a state where the terminal portion of the connection wire 48 for connection is inserted into the case 21, the three connection portions 51 are vertically moved (the axial direction of the magnetic core 34) by being inserted through the entry hole 29 and the insertion hole 36. In addition, it is positioned with respect to the case 21 and the magnetic core 34 in the circumferential direction. In the connection space 35, the tips of the three connection parts 51 are abutted against the outer periphery of the shaft part 39 of the bolt 38. The connection portion 51 is positioned with respect to the case 21 and the magnetic core 34 in the radial direction by abutting against the bolt 38. That is, the three connection parts 51 are held in a state of being positioned so as to have a predetermined positional relationship in the connection space 35. The three connecting portions 51 are sandwiched between a pair of upper and lower pressing members 47.

<Case Connection Terminal Fitting 52 and Case Connection Line 56>
The case connection terminal fitting 52 is a single metallic part including a plate-like connection portion 53 having a flat plate shape and an open barrel portion crimping portion 54 connected to the base end portion of the plate-like connection portion 53. . A circular connection hole 55 is formed in the plate-like connection portion 53. The case connection terminal fitting 52 is inserted into the terminal accommodating chamber 31 from the outer peripheral side of the case 21. The shaft portion 39 of the bolt 38 is passed through the connection hole 55. As described above, the plate-like connecting portion 53 is sandwiched between the upper end of the second spacer 45 and the lower end of the third spacer 46.

The housing connection line 56 is a covered electric wire. The core wire 57 is exposed at one end of the housing connection line 56, and the exposed portion of the core wire 57 is fixed to the crimping portion 54 so as to be conductive by caulking. The other end of the housing connection line 56 is connected to the motor case 61 so as to be conductive.

<Shield layer 18>
The shield layer 18 is a metallic cylindrical member made of, for example, a braided wire. One end of the shield layer 18 is fixed to the motor case 61 so as to be conductive. The other end of the shield layer 18 is located in the vicinity of the inverter device 62 and is connected to the inverter case 63 so as to be conductive. A space surrounded by the shield layer 18 is a shield space 19. The shield layer 18 includes a U-phase wire 11u, a V-phase wire 11v, a W-phase wire 11w, a U-phase capacitor 17u, a V-phase capacitor 17v, a W-phase capacitor 17w, and a connection module 20 (of the housing connection line 56). Siege except some). That is, in the shield space 19, the U-phase wire 11u, the V-phase wire 11v, the W-phase wire 11w, the three

capacitors

17u, 17v, 17w, and the connection module 20 (except for a part of the housing connection line 56). Is housed.

<Operation of Example 1>
Next, the operation of the first embodiment will be described. The connection module 20 is assembled as follows. First, the magnetic core 34 is accommodated in the accommodating space 25 of the case body 22, the bolt 38 is inserted into the lower through hole 28 of the case body 22, and the

first spacer

44, 1 is inserted into the shaft portion 39 of the bolt 38. The sheet pressing member 47 is externally fitted. Then, the three connection wires 48 are inserted into the insertion holes 36 in the magnetic core 34, and the three connection portions 51 are abutted against the shaft portion 39 and positioned. At this time, the three connecting portions 51 are placed on the upper surface of the pinching member 47. Thereafter, the other pinching member 47 is externally fitted on the shaft portion 39 and placed on the three connection portions 51, and the second spacer 45 is further fitted on the shaft portion 39. During this time, it is desirable to temporarily hold the three connection wires 48 so as not to come out of the case 21.

Thereafter, the cover 30 in a state where the housing connecting terminal fitting 52 is accommodated in the terminal accommodating chamber 31 is assembled so as to approach the case main body 22 from above. At this time, the shaft portion 39 of the bolt 38 is passed through the communication hole 33 of the cover 30 and the connection hole 55 of the housing connection terminal fitting 52. Further, the upper end portion of the second spacer 45 is fitted into the communication hole 33. Thereafter, the third spacer 46 is fitted over the shaft portion 39 from above the cover 30 and is inserted into the upper through hole 32 and placed on the plate-like connection portion 53 of the housing connection terminal fitting 52. Further, a washer 43 is externally fitted to the shaft portion 39, and a nut 42 is screwed into the male screw portion 41.

From this state, when the nut 42 is screwed and tightened, the first spacer 44, the pair of clamping members 47, the three connection portions 51, the second spacer 45, the plate between the nut 42 and the head portion 40 of the bolt 38. The connecting portion 53, the third spacer 46, and the washer 43 are strongly sandwiched up and down. By this clamping, the three connection parts 51 are clamped between the pair of upper and lower clamping members 47 and are star-connected through the clamping member 47 so as to be conductive. Further, the three connection portions 51 (three connection connection wires 48) are held in a state in which detachment is restricted with respect to the case 21 and the magnetic core 34 by the clamping by the clamping member 47. Further, the housing connection terminal fitting 52 can also be electrically connected to the three connection portions 51 (three connection connection wires 48) via at least one of the pinching member 47, the shaft portion 39, and the second spacer 45. Connected to.

Also, when reducing the surge voltage generated in the inverter device 62, the frequency of the surge voltage is specified. And according to the frequency, the length of the

conductor layers

16u, 16v, 16w, the corresponding areas of the

conductor layers

16u, 16v, 16w and the U-phase wire 11u, the V-phase wire 11v, the W-phase wire 11w, the conductor layers 16u, Suitable for reducing surge noise of specified frequency by changing the distance between 16v, 16w and U phase wire 11u, V phase wire 11v, W phase wire 11w, material of insulating

layers

12u, 12v, 12w, etc. The capacitances of the

capacitors

17u, 17v, and 17w are set in advance. Further, the magnetic core 34 is also subjected to surge noise of a specified frequency in consideration of the material, the cross-sectional area of the region surrounding the insertion hole 36, the thickness dimension in the radial direction (the length direction of the insertion hole 36), and the like. Select one having an inductance suitable for reduction.

When the capacitances of the

capacitors

17u, 17v, and 17w and the inductance of the magnetic core 34 are set in this way, surge noise in a specific frequency band can be effectively reduced by LC resonance. That is, a surge current in a specific frequency band flows to the motor case 61 through the connection connection line 48 and the housing connection line 56, and further returns to the inverter device 62 through the shield layer 18, so that surge noise is reduced. . The conduction means for connecting the motor case 61 and the inverter case 63 is not limited to the shield layer 18 and may be a stranded wire, a single core wire, a vehicle body, or the like.

The conductive path A with noise filter of the first embodiment includes a plurality of conductive path bodies (U-phase wire 11u, V-phase line 11v, and W-phase line 11w) and a plurality of conductive path bodies (U-phase lines 11u, V). A plurality of

capacitors

17u, 17v, 17w provided in the phase wire 11v and the W phase wire 11w), a plurality of connection wires 48 individually connected to the plurality of

capacitors

17u, 17v, 17w, and an insertion hole 36. Connection means for holding the formed magnetic body core 34, the case 21 for housing the magnetic body core 34, and the plurality of connection connection wires 48 inserted through the insertion holes 36 in a state of being connected in the case 21. 37. According to this configuration, since the magnetic core 34 is accommodated in the case 21, it is protected from interference by other members. Moreover, since the connection part of the connection line 48 for connection is also accommodated in the case 21, it is protected from interference by other members.

In addition, since a plurality of insertion holes 36 are formed in one magnetic core 34, the number of magnetic cores 34 can be made smaller than the number of connection lines 48 for connection. That is, the number of parts can be reduced as compared with the case where one connecting wire 48 is inserted through one magnetic core 34.

Further, the magnetic core 34 has a disk shape having a connection space 35 in the center, and a plurality of insertion holes 36 are arranged radially to communicate with the outer periphery of the magnetic core 34 from the connection space 35. Are connected in a star connection within the connection space 35. According to this configuration, the insertion end portions (connection portions 51) of the plurality of connection wires 48 inserted into the insertion holes 36 from the outer peripheral side of the magnetic core 34 are guided into the connection space 35 by the insertion holes. Therefore, the workability at the time of performing the positioning operation of the connection wire 48 in the connection space 35 and the connection operation between the connection wires 48 is good.

The connection means 37 includes a bolt 38 that penetrates the connection space 35 and a nut 42 that can be screwed to the bolt 38, and three connection connection lines 48 that are abutted against the outer periphery of the bolt 38. Is sandwiched and connected between the head 40 of the bolt 38 and the nut 42. According to this configuration, since a plurality of connection wires 48 inserted into the insertion hole 36 can be positioned by abutting against the outer periphery of the bolt 38, positioning means different from the bolt 38 is not required. . In addition, since the connection means 37 includes a pair of clamping members 47 that are connected in a state where the three connection wires 48 are sandwiched, the three connection wires 48 can be connected easily and reliably. can do.

The case 21 includes a case main body 22 and a cover 30 that can be combined in the axial direction of the bolt 38, and the case main body 22 and the cover 30 are sandwiched between the bolt 38 and the nut 42. Are united. According to this configuration, the operation of configuring the case 21 by fixing the case main body 22 and the cover 30 in the combined state and the operation of connecting the connecting connection wires 48 to each other are performed by tightening the bolt 38 and the nut 42. This can be done in the action process.

The conductive path main body (U-phase wire 11u, V-phase wire 11v, and W-phase wire 11w) is routed between the motor 60 and the inverter device 62, and is connected to the motor case 61 of the motor 60. The housing connection terminal fitting 52 is connected to the connection connection line 48 in a state of being sandwiched between the bolt 38 and the nut 42. According to this configuration, the connection work of the connection line 48 and the work of connecting the housing connection terminal fitting 52 to the connection line 48 are performed in a one-action process by tightening the bolt 38 and the nut 42. be able to.

<Example 2>
Next, a second embodiment of the present invention will be described with reference to FIGS. In the conductive path B with a noise filter of the second embodiment, the connection module 70 is configured differently from the first embodiment. Since other configurations are the same as those in the first embodiment, the same reference numerals are given to the same configurations, and descriptions of the structure, operation, and effects are omitted.

In the connection module 20 according to the first embodiment, the three connection wires 48 are connected to the motor case 61 (housing ground) using the housing connecting terminal fitting 52 and the housing connecting wire 56. On the other hand, the connection module 70 according to the second embodiment does not include the housing connection terminal fitting 52 and the housing connection line 56. That is, the connection connection line 48 is not connected to the housing ground such as the motor case 61. Accordingly, the case 71 constituting the connection module 70 is the same as that of the first embodiment with respect to the case main body 22, but the terminal accommodating chamber 31 of the first embodiment is not formed with respect to the cover 72. Only a through hole 75 is formed which penetrates the cover 72 in the vertical direction and penetrates the bolt 73 and the second spacer 45. Further, the length of the shaft portion 74 of the bolt 73 is shorter than the shaft portion 39 of the bolt 38 of the first embodiment. Further, the third spacer 46 used in the first embodiment is not provided in the connection module 70 of the second embodiment.

<Example 3>
Next, a third embodiment of the present invention will be described with reference to FIG. In the conductive path A with noise filter of the first embodiment, only one surge reducing filter 13 is provided, whereas the conductive path C with noise filter of the third embodiment has two surge reducing filters 13. Are provided separately on the motor 60 side and the inverter device 62 side.

That is, two U-phase conductor layers 16u, V-phase conductor layers 16v, and W-phase conductor layers 16w are provided on the motor 60 side and the inverter device 62 side, respectively. U-phase conductor layer 16u, V-phase conductor layer 16v and W-phase conductor layer 16w on the motor 60 side, U-phase conductor layer 16u, V-phase conductor layer 16v and W-phase conductor layer on the inverter device 62 side 16w is not directly connected. Each U-phase wire 11u, V-phase wire 11v, and W-phase wire 11w include two U-phase capacitors 17u, two V-phase capacitors 17v, and two W-phase capacitors 17w, respectively, on the motor 60 side. It is provided separately on the inverter device 62 side.

The connection module 20 is also provided separately on the motor 60 side and the inverter device 62 side. The configuration of the connection module 20 on the motor 60 side is the same as that of the first embodiment. The configuration of the connection module 20 on the inverter device 62 side is the same as that of the first embodiment except that the housing connection line 56 is connected not to the motor case 61 but to the inverter case 63.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
<Regarding the magnetic core>
(1) In Examples 1 to 3, the magnetic core has a disk shape, but the magnetic core may have various shapes such as a rectangular block shape.
(2) In the first to third embodiments, the plurality of insertion holes are arranged radially, but the plurality of insertion holes may be arranged in parallel (in parallel).
(3) In Examples 1 to 3 described above, the number of magnetic cores is one, and a plurality (three) of insertion holes are formed in the magnetic core. However, the number of magnetic cores is not limited to this. A plurality of insertion holes may be formed in each magnetic core. In this case, the number of insertion holes formed in one magnetic core may be the same in all of the plurality of magnetic cores, or the number of insertion holes may be different between the magnetic cores.
(4) In Examples 1 to 3, the magnetic core is a single part, but the magnetic core has two disk shapes in which three radial grooves constituting the insertion hole are formed on the mating surface. Forms in which the core structures are combined, and forms in which the three core structures are formed into a fan shape having two mating surfaces, and one groove portion is formed on each mating surface to form an insertion hole. It may be.

<About connection wires for connection>
(1) In the first to third embodiments, the terminal portions (connection portions) of the connection wires for connection are connected to each other, but at least one connection wire for connection is connected to another connection at a position other than the terminal portion. You may connect with a line.
(2) In the first to third embodiments, the connection portions of the connection wires are connected to each other via the pinching member. However, the connection wires may be directly brought into contact with each other.
(3) In the first to third embodiments, the connection portions of the plurality of connection wires are clamped by the pair of clamping members, but the plurality of connection wires are connected without using the clamping members. The wire may be directly clamped with bolts, heads and nuts.
(4) In the first to third embodiments, the connection portion of the connection wire inserted into the insertion hole is positioned by abutting against the outer periphery of the bolt, but the means for positioning the connection wire is the outer periphery of the bolt. Other than that.
(5) In the first to third embodiments, the connecting connection line is star-connected, but the connecting connection line may be delta-connected.

<Terminal connection terminal bracket>
(1) In the first and third embodiments, the case connection terminal metal fitting for connecting the connection wire for connection to the conductive housing (motor case or inverter case) is provided. It is good also as a form which does not provide the terminal metal fitting for connection and does not connect the connection wire for connection to an electroconductive housing | casing.
(2) In the second embodiment, the connection connection line is not connected to the conductive casing (motor case or inverter case). However, in the second embodiment, the connection connection line is connected to the casing connection line and the housing. It is good also as a form connected to an electroconductive housing | casing through a body-connecting terminal metal fitting.

(3) In the first to third embodiments, the housing connection terminal fitting is sandwiched between the bolt and the nut and connected to the connection connecting wire. However, the case connection terminal fitting and the connection connecting wire are not connected. The connection may be made by connection means other than the bolt and nut.

<Regarding the conductive path body>
(1) In Embodiments 1 to 3, the number of conductive path main bodies is three. However, the present invention can also be applied to the case where the number of conductive path main bodies is two, or four or more.
(2) In Examples 1 to 3 above, the conductive path main body is a flexible stranded wire having a circular cross section or a single core wire, but the conductive path main body is not easily deformed with a bus bar or a plurality of electric wires in parallel. An arranged flat cable or the like may be used.
(3) In Examples 1 to 3, the three conductive path main bodies are star-connected in the motor. However, the present invention can also be applied to the case where the three conductive path main bodies are delta-connected in the motor. .
(4) In Examples 1 to 3, the three conductive path main bodies constitute a three-phase AC circuit. However, in the present invention, the conductive path main bodies do not constitute a three-phase AC circuit. It can also be applied to.

<About capacitors>
(1) In Examples 1 to 3, the conductor layer constituting the capacitor is adapted to surround the entire circumference of the conductive path body. However, the conductive layer is in the circumferential direction with respect to the conductive path body. It may be a form corresponding to only a part of the region.
(2) In Examples 1 to 3 above, each conductor layer constituting the capacitor is made of a metal cylinder, but the conductor layer is made of sheet-like or tape-like metal foil, braided wire, metal bus bar, metal A stranded wire made of metal, a single core wire made of metal, a material obtained by plating the surface of the core material, a conductive resin, a conductive rubber, or the like may be used.
(3) In the first to third embodiments, one capacitor is provided in one conductive path main body, and the number of conductive path main bodies and the number of capacitors and connection wires are the same. A common capacitor may be provided. In this case, the number of capacitors and connection lines for connection is smaller than the number of conductive path bodies.
(4) In Examples 1 to 3, the capacitor includes a conductive path body, an insulating layer surrounding the conductive path body, and a conductor layer provided so as to correspond to the conductive path body with the insulating layer interposed therebetween. Although it is configured, the capacitor may have a lead wire and connect the lead wire to the conductive path body.

<Others>
(1) In the first to third embodiments, the case structure is fixed in the combined state and at the same time the connection wires for connection are connected. However, the steps of fixing the case structure in the combined state and the connection wires for connection You may perform the process to connect separately.
(2) In the first to third embodiments, a capacitor and a magnetic core are used as a member having a noise filter function. However, the present invention is not limited to this, and the conductor layer (capacitor) alone is a noise filter such as a resistor. A component that exhibits a function, a component that exhibits a noise filter function in cooperation with a capacitor or a magnetic core, and the like may be connected in parallel with the magnetic core.
(3) In the first to third embodiments, the plurality of conductive path main bodies are collectively surrounded by the shield layer, but such a shield layer may not be provided.
(4) In Examples 1 to 3 above, the conductive path with the noise filter is routed between the motor and the inverter device. However, the present invention is connected to devices other than the motor and the inverter device. It can also be applied.
(5) In the first and third embodiments, the connection wire for connection is connected to the conductive casing (motor case or inverter case). However, the connection wire for connection is not a conductive housing but a vehicle body (ground). You may connect directly.

A, B, C ... Conductive path with noise filter 11u ... U-phase wire (conductive path body)
11v ... V-phase wire (conductive path body)
11w… W phase wire (conducting path body)
17u… U phase capacitor (capacitor)
17v ... V-phase capacitor (capacitor)
17w ... W phase capacitor (capacitor)
21, 71 ... case 22 ... case body (case structure)
30, 72 ... Cover (case structure)
34 ... Magnetic body core 35 ... Connection space 36 ... Insertion hole 37 ... Connection means 38, 73 ... Bolt 40 ... Head 42 ... Nut 47 ... Clamping member 48 ... Connection wire for connection 52 ... Terminal fitting for housing connection 60 ... Motor (equipment)
61 ... Motor case (conductive casing)
62 ... Inverter device (equipment)
63 ... Inverter case (conductive casing)

Claims

A plurality of conductive path bodies;
A plurality of capacitors provided in the plurality of conductive path bodies;
A plurality of connection lines individually connected to the plurality of capacitors;
A magnetic core having an insertion hole;
A case for housing the magnetic core;
A conductive path with a noise filter, comprising: a connecting means for holding the plurality of connecting connection wires inserted through the insertion hole in a state of being connected in the case.
The conductive path with a noise filter according to claim 1, wherein a plurality of the insertion holes are formed in one magnetic core.
The magnetic core has a disk shape having a connection space in the center,
The plurality of insertion holes are arranged radially from the connection space to the outer periphery of the magnetic core,
The conductive path with noise filter according to claim 1 or 2, wherein the plurality of connection lines for connection are star-connected in the connection space.
The connection means includes a bolt that penetrates the connection space, and a nut that can be screwed into the bolt.
4. The noise according to claim 3, wherein the plurality of connection wires abutted on the outer periphery of the bolt are sandwiched and connected between the head of the bolt and the nut. 5. Conductive path with filter.
The conductive path with a noise filter according to claim 4, wherein the connection means includes a pair of clamping members that are connected in a state where the plurality of connection lines are sandwiched.
The case comprises a pair of case components that can be combined in the axial direction of the bolt,
The conductive path with a noise filter according to claim 4 or 5, wherein the pair of case structural bodies are united in a state of being sandwiched between the bolt and the nut.
The conductive path body is routed between devices,
The housing connection terminal fitting connected to the conductive housing of the device is connected to the connection connection wire in a state of being sandwiched between the bolt and the nut. The electrically conductive path with a noise filter of any one of Claims 4 thru | or 6.