WO2020145196A1 - 電気接続箱 - Google Patents

電気接続箱 Download PDF

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Publication number
WO2020145196A1
WO2020145196A1 PCT/JP2019/051414 JP2019051414W WO2020145196A1 WO 2020145196 A1 WO2020145196 A1 WO 2020145196A1 JP 2019051414 W JP2019051414 W JP 2019051414W WO 2020145196 A1 WO2020145196 A1 WO 2020145196A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
case
shield
fastening
fastening member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/051414
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
達哉 清水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Wiring Systems Ltd, AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to US17/421,994 priority Critical patent/US20220115854A1/en
Priority to CN201980085489.8A priority patent/CN113228440A/zh
Publication of WO2020145196A1 publication Critical patent/WO2020145196A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
    • H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
    • H05K1/0219—Printed shielding conductors for shielding around or between signal conductors, e.g. coplanar or coaxial printed shielding conductors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H05K7/12—Resilient or clamping means for holding component to structure
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/002—Casings with localised screening
    • H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
    • H05K9/0024—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields
    • H05K9/0026—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields integrally formed from metal sheet
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0215—Grounding of printed circuits by connection to external grounding means

Definitions

  • Patent Document 1 includes upper and lower casings that cover the shield cover and the printed circuit board.
  • the upper and lower casings are molded from plastic or the like, fitted with the printed circuit board and the shield cover sandwiched therebetween, and fastened with screws from the lower side of the lower casing.
  • the printed circuit board is provided with a solid ground and a solder protrusion formed on the solid ground forming portion, and when the housing is fastened with a screw, the shield cover is pressed against the printed circuit board, and the solid ground on the printed circuit board and the shield cover. Is electrically connected, the inside of the area covered by the shield cover is shielded.
  • the shield cover and the solid ground of the printed circuit board are electrically connected.
  • an appropriate torque when fastening the screw is a member. Since the torque is too high and the electrical connection is different, there is a poor connection between the shield cover and the solid ground due to too high torque, and the upper and lower casings, shield cover and printed circuit board due to too low torque. There is concern about problems such as insufficient fixing strength of the.
  • the technique described in the present specification has been completed based on the above circumstances, and an object thereof is to provide an electrical junction box fastened with an appropriate torque.
  • the electrical junction box described in the present specification includes a circuit board on which a conductive path including a ground line is formed, a shield case that covers the circuit board, and a first fastening member that fastens the circuit board and the shield case.
  • the shield case is electrically connected to the ground line by fastening the circuit board and the shield case with the first fastening member.
  • the ground line and the shield case are electrically connected to each other by fixing the shield case to the circuit board by fastening the circuit board and the shield case with the first fastening member. be able to. Further, the relative positions of the board unit and the case unit can be fixed by fastening with the second fastening member. As a result, fastening for electrical connection between the circuit board and the shield case and fastening for fixing the circuit board to the case unit can be performed with appropriate torques. Therefore, it becomes possible to provide the electric connection box fastened with an appropriate torque.
  • a third fastening member that fastens the frame and the resin case is provided, and the frame holds a power storage element.
  • the weight of the power storage element may cause a problem due to stress generated at a portion fastened by the second fastening member or the like.
  • the shield case includes a first shield case that covers one plate surface of the circuit board and a second shield case that covers the other plate surface of the circuit board.
  • the circuit board has a through hole region in which a plurality of through holes are electrically connected along the edge of the shield case, and the through hole region is connected to the ground potential.
  • FIG. 3 is a perspective view showing a step of assembling the first shield case to the first resin case.
  • FIG. 9 is a perspective view showing a step of assembling the frame to the first resin case after assembly in FIG. 9.
  • FIG. 10 is a perspective view showing a process of assembling the circuit board to the assembled frame of FIG.
  • FIG. 11 is a perspective view showing a step of assembling the second shield case to the circuit board after assembly in FIG. 11.
  • FIG. 12 is a perspective view showing the electrical junction box with the second resin case removed after assembly in FIG.
  • the electric junction box 10 (FIG. 1) of the present embodiment is provided separately from a main power supply for supplying a driving force of a vehicle in a vehicle such as an electric vehicle or a hybrid vehicle, and is used for a motor of an in-vehicle electric component or a device. It can be used as an auxiliary power source or the like capable of supplying electric power.
  • the X direction in FIG. 1 is the front
  • the Y direction is the left
  • the Z direction in FIG. 2 is the upper direction.
  • the electric junction box 10 includes a board unit 11 and a case unit 40 having resin cases 42 and 52 and a frame 55.
  • the board unit 11 includes a circuit board 12 on which conductive paths are formed, shield cases 21 and 26 that cover both sides of the circuit board 12, and a first fastening member 31 that fastens the circuit board 12 and the shield cases 21 and 26.
  • the circuit board 12 a printed circuit board in which conductive paths are formed on both surfaces of an insulating plate is used.
  • the conductive path of the circuit board 12 includes a power supply line PL connected to the power supply side (+ side) of the vehicle and a vehicle body. And a ground line GL connected to a ground potential.
  • a plurality of electronic components 14 are mounted on the conductive paths of the circuit board 12.
  • the plurality of electronic components 14 are composed of, for example, FET (Field effect transistor), resistors, diodes, coils, capacitors, microcomputers, etc., and their terminals are connected to the conductive paths of the circuit board 12 by soldering or the like. ..
  • the circuit board 12 is provided with a plurality of circular through holes 15 to 17 and a plurality of recessed recesses 19 cut out from the peripheral edge of the circuit board 12.
  • the plurality of through holes 15 to 17 are provided at intervals along the peripheral edge of the circuit board 12, and the plurality of first fastening holes 15 for fastening the shield cases 21 and 26 to the circuit board 12 and the circuit. It has a plurality of second fastening holes 16 for fastening the substrate 12 to the frame 55 and a plurality of holding holes 17 through which the holding pins 48A, 59B of the case unit 40 are inserted.
  • the first fastening holes 15 are provided along the left and right side edges of the circuit board 12, and the first fastening member 31 is inserted therethrough.
  • the first fastening member 31 includes a bolt 32 having a shaft portion 32A and a head portion 32B, and a nut 33, and the shaft portion 32A is inserted into the first fastening hole 15.
  • the second fastening holes 16 are provided near the front and rear edges of the circuit board 12, and the second fastening member 35 is inserted therethrough.
  • the second fastening member 35 is a screw having a shaft portion 35A and a head portion 35B, and the shaft portion 35A is screwed to the frame 55.
  • the holding pins 59B of the frame 55 are fitted into the holding holes 17 near the rear end edge of the circuit board 12 among the plurality of holding holes 17, and a plurality of holding holes 59 near the left and right side edges of the circuit board 12 are inserted.
  • the holding pin 48A of the first resin case 42 is fitted into the holding hole 17.
  • the escape recesses 19 are provided on the left and right side edges of the circuit board 12, and are formed in such a size that they do not come into contact with the head portion 36B of the screw as the third fastening member 36 having the shaft portion 36A and the head portion 36B.
  • the circuit board 12 has a through hole region 18 in which a through hole group including a plurality of through holes is arranged in a state of being electrically connected to each other.
  • the through-hole region 18 extends in a ring shape along the outer peripheral edge of the shield cases 21 and 26, and of the shield cases 21 and 26, the first board fixing portion 25 and the second board fixing portion fixed to the circuit board 12 are fixed. At least a part of the portion 29 overlaps.
  • the circuit board 12 is not limited to the printed circuit board, and for example, the circuit board may be formed by stacking a bus bar made of a metal plate material such as copper or a copper alloy on the printed circuit board.
  • a connector 20 is fixed to the front end of the circuit board 12.
  • the connector 20 includes a housing that opens like a hood and a connector terminal that is fixed to the housing.
  • the connector terminals are soldered to the conductive paths of the circuit board 12.
  • the first shield case 21 is made of a metal such as iron, stainless steel, or aluminum, and as shown in FIG. 9, a rectangular first facing portion 22A that is arranged to face the lower surface of the circuit board 12 with a space therebetween. And a pair of first end wall portions 23 extending upward from front and rear end edges of the first facing portion 22A, and a pair of first side wall portions 24 extending upward from both side edge portions of the first facing portion 22A.
  • the first end wall portion 23 is formed with an overhang portion 23A that projects outward from the tip end portion, and a first notch portion 23B that is notched on the tip end side.
  • the overhanging portion 23A is superposed on the lower surface (plate surface) of the circuit board 12.
  • the first cutout portion 23B is formed by cutting out a corner portion of the first end wall portion 23 in a rectangular shape, and the projecting piece 59 of the frame 55 can be led out to the outside.
  • the plurality of first board fixing portions 25 are stacked on the circuit board 12 so that at least one first board fixing portion 25 is connected to the ground line GL.
  • Each of the first substrate fixing portions 25 is provided with one or a plurality of first shield fastening holes 25A through which the shaft portion 32A of the first fastening member 31 is inserted.
  • the second shield case 26 is made of metal such as iron, stainless steel, and aluminum, and extends downward from the rectangular second facing portion 26A and the front and rear edges of the second facing portion 26A, as shown in FIG. A pair of second end wall portions 27 and a plurality of second side wall portions 28 extending downward from the left and right side end edges of the second facing portion 26A are provided.
  • the second end wall portion 27 on the front side is provided with a protruding portion 27A protruding outward from the tip end portion and superposed on the upper surface of the circuit board 12, a second notch portion 27B having a notch end portion, and a connector 20.
  • a connector lead-out port 27C that is led out to the outside is formed.
  • the second cutout portion 27B is formed by cutting out a corner portion (corner portion on the circuit board 12 side) of the second end wall portion 27 into a rectangular shape so as not to contact the head portion 35B of the second fastening member 35. There is.
  • the second board fixing portion 29 extends from the lower ends of the plurality of second side wall portions 28 in a direction orthogonal to the second side wall portion 28, and has a plurality of second shield fastening holes into which the shaft portions 32A of the first fastening member 31 are inserted. 29A are provided at intervals in the front-rear direction.
  • a second shield holding hole 29B into which the holding pin 59B of the frame 55 is inserted is formed through the second substrate fixing portion 29.
  • the first shield case 21 and the second shield case 26 can be formed, for example, by punching a thin metal plate material into a developed shape by a pressing machine and performing bending.
  • the case unit 40 has resin cases 42 and 52 made of synthetic resin and a frame 55 made of synthetic resin fixed to the resin cases 42 and 52.
  • the resin cases 42 and 52 include a box-shaped first resin case 42 arranged on the lower side and an upper side opened, and a second resin case 52 arranged on the upper side and fitted to the first resin case 42. ..
  • the first resin case 42 includes a rectangular bottom portion 42A, a pair of side walls 43 standing up from side edges of the bottom portion 42A, and a pair of side walls 43 that connect end portions of the side walls 43. And a connecting wall 47.
  • a support portion 44 capable of supporting the substrate unit 11 from below, a frame holding portion 48 capable of holding the assembly position of the frame 55, and a frame fixing portion 50 fixing the frame 55. And are provided so as to project upward.
  • the supporting portion 44 projects in a cylindrical shape upward from the bottom surface portion 42A, and a holding recess 45 capable of holding the nut 33 is formed at the upper end portion, as shown in FIG.
  • the holding recess 45 has an inner peripheral surface that fits into the outer shape (outer periphery) of the nut 33, restricts rotation of the nut 33 when fastening the bolt 32, and releases the shaft portion 32A of the bolt 32. 46 is formed on the bottom surface.
  • the frame holding portion 48 and the frame fixing portion 50 are provided with a holding pin 48A protruding upward at the tip (upper end), and the frame fixing portion 50 is provided at the tip (upper end).
  • a screw hole 50A that can be screwed (bolted) is formed.
  • the second resin case 52 includes a rectangular top surface portion 52A and a peripheral wall 53 extending downward from a peripheral portion of the top surface portion 52A.
  • a lead-out recess 53A is formed in the front side of the peripheral wall 53 so as to be led out of the connector 20.
  • the frame 55 is made of synthetic resin, and as shown in FIG. 10, includes a plate-shaped main body 56 and a plurality of protrusions 58 to 60 protruding outward from the peripheral edge of the main body 56.
  • the main body 56 holds a capacitor CP (an example of “electric storage element”) (see FIG. 2.
  • the capacitor CP is omitted in FIG. 10 and the like).
  • the main body 56 includes a capacitor holding portion (not shown) that can integrally hold a plurality of capacitors CP in a lined state, and the frame 55 can form a capacitor unit, for example.
  • the capacitor CP has a cylindrical shape having a pair of positive and negative lead terminals, and can be, for example, an electric double layer capacitor or a lithium ion capacitor.
  • the plurality of projecting pieces 58 to 60 project from the side surface of the main body 56 laterally and are fixed to the resin case 42, and the plurality of projecting pieces 58 to 60 project from the front and rear edges of the main body 56 to form a circuit.
  • a board fixing piece 59 fixed to the board 12 and a holding piece 60 protruding laterally from the side surface of the main body 56 to hold the circuit board 12 are provided.
  • the case fixing piece 58 is formed with a third fastening hole 58A which allows the shaft portion 36A of the screw as the third fastening member 36 to be inserted therethrough.
  • the board fixing piece 59 is formed with a second fastening hole 59A which allows the shaft portion 35A of the second fastening member 35 to be inserted therethrough.
  • a holding pin 59B is provided so as to be aligned with the second fastening hole 59A. The holding pin 59B is inserted into the holding hole 17 of the circuit board 12 and holds the position of the circuit board 12 in the XY directions.
  • the first shield case 21 is fitted to the inside of the first resin case 42, the frame 55 is attached to the first resin case 42, and the case fixing piece 58 of the frame 55 is attached.
  • the third fastening member 36 fastens the frame fixing portion 50 of the first resin case 42.
  • the plurality of electronic components 14 and the connector 20 are mounted on the circuit board 12, and as shown in FIG. 11, the holding pin 59B of the frame 55 and the holding pin 48A of the first resin case 42 are provided in the holding hole 17 of the circuit board 12.
  • the peripheral portion of the circuit board 12 is overlapped with the first board fixing portion 25 of the first shield case 21, the second fastening member 35 is passed through the second fastening hole 16 of the circuit board 12, and the frame 55 of the frame 55 is inserted.
  • the second fastening hole 59A is screwed.
  • the second shield case 26 is put on the circuit board 12, and the second board fixing portion 29 is placed on the peripheral edge of the circuit board 12.
  • the shaft portion 32A of the bolt 32 serving as the first fastening member 31 is inserted into the first fastening hole 15 of the circuit board 12 and the shield fastening holes 25A and 29A of the shield cases 21 and 26, and is inserted into the nut 33 of the holding recess 45.
  • the board unit 11 including the circuit board 12, the shield cases 21 and 26, and the first fastening member 31 is placed on the first resin case 42 (and the frame 55).
  • the nut 33 (first fastening member 31) is allowed to move in the up-down direction in the holding recess 45, so that the circuit board 12 and the shield cases 21 and 26 with respect to the first resin case 42. Are not fastened (fixed) by the first fastening member 31.
  • the frame 55 is fixed to both the circuit board 12 and the first resin case 42, the circuit board 12 is fixed to the first resin case 42 via the frame 55. Is becoming Therefore, the relative positions of the board unit 11 and the frame 55 are in a fixed state.
  • the electric junction box 10 is formed by covering the second resin case 52 from above the board unit 11 (FIG. 1).
  • the electric junction box 10 includes a circuit board 12 on which a conductive path including the ground line GL is formed, a shield case 21 (26) that covers the circuit board 12, and a first fastening member that fastens the circuit board 12 and the shield cases 21 and 26.
  • a substrate unit 11 having a substrate 31; a case unit 40 having resin cases 42, 52 made of resin; and a frame 55 fixed to the resin cases 42, 52; a circuit board 12 in the board unit 11;
  • a second fastening member 35 for fastening the shield case 21 (26) electrically connected to the ground line GL by fastening the circuit board 12 and the shield case 21 (26) by the first fastening member 31.
  • the shield cases 21 and 26 are fixed to the circuit board 12, and the grounding is performed.
  • the line GL and the shield case 21 (26) can be electrically connected.
  • the relative position between the board unit 11 and the case unit 40 can be fixed by the fastening by the second fastening member 35.
  • a third fastening member 36 that fastens the frame 55 and the resin case 42 is provided, and the frame 55 holds the capacitor CP (electric storage element).
  • the weight of the capacitor CP may cause a problem due to the stress generated at the portion fastened by the second fastening member 35 and the like.
  • the capacitor CP is fixed to the resin cases 42 and 52 via the frame 55, it is possible to suppress defects in the weight of the capacitor CP via the frame 55, and It becomes possible to fasten the frame 55 and the first resin case 42 with an appropriate torque by the third fastening member 36.
  • the shield cases 21 and 26 include a first shield case 21 that covers one plate surface of the circuit board 12 and a second shield case 26 that covers the other plate surface of the circuit board 12. In this way, it is possible to suppress the influence of noise on both surface sides of the circuit board 12.
  • the circuit board 12 has a through hole region 18 in which a plurality of through holes are electrically connected along the edge of the shield case 21 (26), and the through hole region 18 is connected to the ground potential. ..
  • the through-hole group in the through-hole region 18 causes a thickness portion of the circuit board 12 that is not shielded by the shield cases 21 and 26 (between the first substrate fixing portion 25 and the second substrate fixing portion 29). Can be shielded.
  • first shield case 21 and the second shield case 26 are provided, the present invention is not limited to this, and only one of the first shield case 21 and the second shield case 26 may be provided.
  • first resin case 42 and the second resin case 52 are provided in the configuration, the invention is not limited to this, and the second resin case 52 may not be provided.
  • the present invention is not limited to this, and the circuit board 12 and the resin cases 42, 52 are fastened by the second fastening member 35. Good.
  • the nut 33 as the first fastening member 31 is configured to be retained in the retaining recess 45 of the resin cases 42 and 52 at the time of assembly, but the configuration is not limited to this.
  • the nut 33 may be fixed to the hole edge portion of the first fastening hole 15 of the circuit board 12 by welding or the like.
  • a flange 71 protruding outward may be provided at the tip of the hood 70 of the connector housing.
  • ground line GL is formed on both surfaces of the circuit board 12, it is not limited to this.
  • the ground line GL may be formed on one surface of the circuit board 12, and one of the first shield case 21 and the second shield case 26 may be superposed on the ground line GL and electrically connected to the ground line GL.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Mounting Components In General For Electric Apparatus (AREA)
  • Structure Of Printed Boards (AREA)
  • Connection Or Junction Boxes (AREA)
PCT/JP2019/051414 2019-01-11 2019-12-27 電気接続箱 Ceased WO2020145196A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US17/421,994 US20220115854A1 (en) 2019-01-11 2019-12-27 Electrical junction box
CN201980085489.8A CN113228440A (zh) 2019-01-11 2019-12-27 电连接箱

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019003777A JP7081506B2 (ja) 2019-01-11 2019-01-11 電気接続箱
JP2019-003777 2019-01-11

Publications (1)

Publication Number Publication Date
WO2020145196A1 true WO2020145196A1 (ja) 2020-07-16

Family

ID=71520437

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/051414 Ceased WO2020145196A1 (ja) 2019-01-11 2019-12-27 電気接続箱

Country Status (4)

Country Link
US (1) US20220115854A1 (enExample)
JP (1) JP7081506B2 (enExample)
CN (1) CN113228440A (enExample)
WO (1) WO2020145196A1 (enExample)

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JP7180704B2 (ja) * 2021-02-05 2022-11-30 株式会社明電舎 電気装置
JP2024146242A (ja) * 2023-03-31 2024-10-15 株式会社豊田自動織機 電子機器

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JPS58111991U (ja) * 1982-01-25 1983-07-30 ミツミ電機株式会社 回路基板装置
JP2010172059A (ja) * 2009-01-20 2010-08-05 Autonetworks Technologies Ltd 回路構成体、及び電気接続箱
JP2013176241A (ja) * 2012-02-27 2013-09-05 Auto Network Gijutsu Kenkyusho:Kk 回路ユニット
JP2014209639A (ja) * 2014-06-12 2014-11-06 日立オートモティブシステムズ株式会社 電子制御装置
JP2018206973A (ja) * 2017-06-05 2018-12-27 株式会社ファルテック 回路基板収容筐体、および電子装置

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