WO2015040868A1 - リードフレーム、リードフレームを使用した電子制御装置及びリードフレーム搭載方法 - Google Patents
リードフレーム、リードフレームを使用した電子制御装置及びリードフレーム搭載方法 Download PDFInfo
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- WO2015040868A1 WO2015040868A1 PCT/JP2014/052398 JP2014052398W WO2015040868A1 WO 2015040868 A1 WO2015040868 A1 WO 2015040868A1 JP 2014052398 W JP2014052398 W JP 2014052398W WO 2015040868 A1 WO2015040868 A1 WO 2015040868A1
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- WIPO (PCT)
- Prior art keywords
- land
- lead frame
- circuit board
- lead
- connector
- Prior art date
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- 238000005520 cutting process Methods 0.000 claims description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/495—Lead-frames or other flat leads
- H01L23/49517—Additional leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/495—Lead-frames or other flat leads
- H01L23/49541—Geometry of the lead-frame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49811—Additional leads joined to the metallisation on the insulating substrate, e.g. pins, bumps, wires, flat leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/51—Fixed connections for rigid printed circuits or like structures
- H01R12/52—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
- H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
- H01R12/73—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
-
- 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
- H05K1/14—Structural association of two or more printed circuits
- H05K1/144—Stacked arrangements of planar printed circuit boards
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/04—Assemblies of printed circuits
- H05K2201/042—Stacked spaced PCBs; Planar parts of folded flexible circuits having mounted components in between or spaced from each other
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/1031—Surface mounted metallic connector elements
- H05K2201/10318—Surface mounted metallic pins
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10742—Details of leads
- H05K2201/1075—Shape details
- H05K2201/10757—Bent leads
-
- 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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4007—Surface contacts, e.g. bumps
- H05K3/4015—Surface contacts, e.g. bumps using auxiliary conductive elements, e.g. pieces of metal foil, metallic spheres
Definitions
- the present invention relates to a lead frame used for a circuit board, an electronic control device using the lead frame, and a method for mounting the lead frame on the circuit board.
- Patent Document 1 As a lead frame for connecting a power board and a control board in a lead frame used for connecting the boards to each other, for example, an electronic control unit such as an engine control unit (ECU), for example, Patent Document 1 is publicly known. Yes.
- ECU engine control unit
- the lead frame of Patent Document 1 has a structure in which a plurality of terminals extending in the vertical direction are held in a longitudinal direction by a resin member that is an insulator.
- the resin members had to be molded side by side to cause molding costs.
- the present invention provides a lead frame including a plurality of lead portions in which a land connection portion is formed via a bent portion at one end portion of a pin-shaped terminal, and a connecting portion connecting the plurality of lead portions.
- the connecting portion is formed by connecting a plate-like pedestal portion for erecting the plurality of lead portions to the tip end portion of the land connecting portion.
- the plate-like pedestal portion for erecting the plurality of lead portions is continuously provided at the distal end portion of the land connection portion, the connecting portion of the resin member as in Patent Document 1 is unnecessary, The manufacturing cost can be reduced.
- FIG. 3 is an enlarged perspective view of a lead frame portion of FIG. 2.
- the longitudinal cross-sectional view of an electronic control unit. (A) is a top view of a drive circuit board, (b) is an expanded perspective view of a 2nd electricity supply terminal.
- A) is an enlarged view of terminal connection on the three-phase motor side, and (b) is an enlarged cross-sectional view of terminal connection on the connector side.
- FIG. 13 is a cross-sectional view taken along line AA in FIG. 12.
- FIG. 1 is a perspective view of a lead frame 15 of the present invention.
- the lead frame 15 includes a plurality of lead portions 15d in which a land connection portion 15c is formed at a lower end portion of a pin-like terminal 15a via a bent portion 15b, and a connecting portion 15e connecting the plurality of lead portions 15d. Yes.
- the connecting portion 15e is formed in a rectangular plate shape.
- the connecting portion 15e is formed by connecting a plate-like pedestal portion having a suction surface 15f that is sucked by the lead frame automatic mounting device while maintaining the plurality of lead portions 15d in an upright state.
- the lead frame 15 is formed by punching a conductive metal plate into a predetermined shape and bending it into a substantially L shape.
- the bent portion 15b is formed by bending the lower end portion of the terminal 15a in a U shape, and the lower side of the bent portion 15b is a land connecting portion 15c.
- a thin-walled portion 15g for easily cutting the land connecting portion 15c is formed at the end portion of the land connecting portion 15c on the connecting portion 15e side.
- the thin portion 15g is formed by providing a V-shaped groove 15h in the land connection portion 15c.
- Reference numeral 15i denotes a positioning hole used when the lead frame 15 is formed by punching with a metal plate.
- the connecting portion 15e is easily cut at the thin-walled portion 15g by applying a force F in the direction of pushing up the connecting portion 15e in FIG. 1, and is separated from the lead portion 15d, and the lead portion 15d remains on the drive circuit board 7 side. .
- the drive circuit board 7 is formed by providing a wiring pattern 7c and a land portion 7d on a metal plate 7a serving as a base via an insulating layer 7b.
- the land connection portion 15c is protruded in a state where a portion thereof, specifically, a portion including the thin portion 15g is protruded on the insulating layer 7b outside the land portion 7d of the drive circuit board 7.
- the portion excluding the portion is connected and fixed on the land portion 7d with solder or the like.
- the land connecting portion 15c is cut by the thin portion 15g, and the connecting portion 15e is separated and removed from the lead portion 15d, and only the lead portion 15d remains on the drive circuit board 7 side.
- the thin wall portion 15g is formed by providing the V-shaped groove 15h on the lower surface of the land connecting portion 15c.
- the groove 15h is formed on the upper surface. May be.
- the shape of the groove 15h is not limited to the V shape, but may be a U shape, other shapes, or a slit.
- connection portion 15e of the lead frame 15 By making the connecting portion 15e of the lead frame 15 an appropriate size, (1) Using the connecting portion 15e, the lead frame 15 can be maintained in an upright state, and handling of the lead frame is facilitated. (2) The connecting portion 15e can be used as a suction surface when the lead frame is mounted on the circuit board using the automatic lead frame mounting device.
- the lead frame 15 of the embodiment can be easily formed by punching a single metal plate into a predetermined shape and then bending it into the predetermined shape.
- the electronic control device is configured as an electric power steering device.
- the electric power steering apparatus 1 includes an input shaft 2 to which steering torque is input from a steering wheel, and a motor unit 3 that applies assist torque to the steering torque.
- the motor unit 3 is electronic.
- the drive is controlled by a control unit (ECU) 4.
- the electronic control unit 4 is used by incorporating the lead frame 15 of the present invention.
- the electronic control unit 4 has a base end portion side of the shaft 3a of the motor unit 3 (an end portion on the side opposite to the end portion on the output side, that is, the end portion corresponding to the control circuit board 8 described later). Is arranged.
- the motor unit 3 includes an electric motor (three-phase AC brushless motor) (not shown), a motor housing 3c that houses the electric motor, the shaft 3a that is rotationally driven by the electric motor, and a base end of the shaft 3a.
- a magnet S for a sensor that detects rotation of the shaft 3a by a Hall element 47, which will be described later, and a first energization terminal (three-phase motor terminal) connected to the three-phase terminals of the motor ) 3e.
- the shaft 3a is rotated by driving the electric motor, and applies assist torque to the steering torque via a reduction gear (not shown).
- an exterior portion 3f having a large outer dimension is formed on the electronic control unit 4 side of the motor housing 3c, and boss portions 3g are formed at four corners of the exterior portion 3f.
- the electronic control unit 4 includes a case (housing body portion) 5 fixed to the exterior portion 3 f of the motor housing 3 c, a cover (lid portion) 6 joined to the case 5, and the case 5 and the cover 6.
- a drive circuit board 7 that is housed between the case 5 and the cover 6 and controls the drive of the drive circuit board 7, as shown in FIG.
- an electric connector 9 for supplying electric power to the drive circuit board 7, the control circuit board 8, and the electric motor from an omitted power supply battery.
- the case 5 is formed, for example, in an aluminum alloy material in the shape of a box having an upper opening, and includes a bottom plate 5a and side plates 5b erected on the edge of the bottom plate 5a, as shown in FIG. The upper part of the bottom plate 5a protrudes forward.
- An opening 10 for attaching the electrical connector 9 is formed in the upper part of the bottom plate 5a. Holes 10a are formed in the peripheral edge of the opening 10, and the upper four corners on the motor housing 3c side are for fixing the electrical connector. Female screw holes 12 are formed.
- annular joint portion 11 is formed in the lower portion of the bottom plate 5a on the motor housing 3c side, and is fitted into an opening (not shown) of the exterior portion 3f, and female screw holes for fixing to the exterior portion 3f are formed at the four corners. 17 is formed. A shaft portion of a fixing screw (not shown) inserted into the through hole of the exterior portion 3f is fastened to the female screw hole 17.
- a circular opening 13 for receiving the sensor magnet S attached to the base end (shaft base end) of the shaft 3 a is formed in the center of the joint 11, and a three-phase motor side is formed below the opening 13.
- Three horizontally-long rectangular openings 14 through which the first energizing terminals (three-phase motor terminals) 3e are inserted are formed, and the drive circuit board 7 and the control circuit board 8 are disposed diagonally above and to the left and right of the opening 13.
- a pair of vertically long rectangular openings 16 are formed so that the front ends of the lead frames (conduction terminals) 15 that connect the two face each other.
- a plurality of columnar substrate fixing portions 18 for fixing the control circuit substrate 8 are erected on the cover 6 side of the bottom plate 5a.
- a boss portion 19 is formed at a predetermined position on the outer surface of each side plate 5b.
- a fitting groove 20 is formed on the front end surface of each side plate 5 b, and a fitting protrusion 23 formed on the cover 6 is fitted into the fitting groove 20.
- the cover 6 is formed of an aluminum alloy material or the like in a rectangular shape along the outer shape of the case 5, and closes the opening of the case 5.
- the cover 6 is formed with female screw holes 21 for fixing the drive circuit board 7 at the left and right edges, and bosses 22 are formed at positions corresponding to the bosses 19 on the respective end faces.
- a through-hole 22a is formed in the.
- a shaft portion of a fixing screw (not shown) inserted through the through hole 22 a is fastened to the female screw hole 17 of the boss portion 19.
- a heat sink (not shown) is formed on the side of the cover 6 opposite to the case 5.
- the electrical connector 9 is attached to the outer peripheral edge of the opening 10 of the case 5, and as shown in FIG. 11B, a resin molded part 30 is provided at a substantially central part of the first current-carrying terminal (power terminal) 25 on the connector side.
- It has a third connector C3 having a resin molded part 30 formed in the center, and a fourth connector 28 (see FIG. 6) to which the first connector C1 to the third connector C3 are fixed.
- the connector 28 is closed.
- the fourth connector 28 includes a connector holder for holding the first connector C1 to the third connector C3, and three mounting holes (not shown) through which the first connector C1 to the third connector C3 are inserted are formed. Yes.
- the outer periphery of the resin molding part 30 of the first connector C1 to the third connector C3 is coupled to the inner surface of each of the mounting holes, and the first connector C1 to the third connector C3 are held and fixed to the fourth connector 28. .
- the first connector C1 to the third connector C3 and the fourth connector 28 are coupled, the first connector C1 to the third connector C3 in which the resin molding part 30 is formed at substantially the center of the terminals 25 to 27. Is inserted into each mounting hole of the fourth connector 28 and coupled.
- an adhesive (sealant) is applied to the gap between the first connector C1 to the third connector C3 and the fourth connector 28, and the gap is waterproofed and the first connector C1 to the third connector C3 and the fourth connector 28 are sealed. Strengthen the bond strength between.
- the electrical connector 9 is completed by combining the first connector C1 to the third connector C3 and the fourth connector 28, and is attached to the outer peripheral edge of the opening 10.
- a mounting portion 28 a is formed on the case 5 side of the fourth connector 28 so as to be fitted in a circumferential groove 10 b formed on the outer peripheral edge of the opening 10, and is opposite to the case 5.
- connector fitting portions 33a to 33c are formed on the side.
- Through holes 30 a are formed at the four corners of the fourth connector 28. Moreover, between each through-hole 30a of the side surface by the side of the case 5 of the 4th connector 28, the pin 31 inserted in the hole 10a of the case 5 is formed as shown in FIG.10 (b).
- pins 31 and the holes 10a are formed in an asymmetrical number, it is possible to prevent the electrical connector 9 from being erroneously attached to the left and right.
- one end portions of the terminals 25 to 27 are disposed on the drive circuit board 7 side, and the other end portions are disposed in the connector fitting portions 33a to 33c. Further, the end portions of the terminals 26 and 27 are formed in a pin shape.
- one end of the first energization terminal 25 is formed in a tapered band shape.
- the tip of the first energizing terminal 25 is cut out in a V shape to form a pair of sandwiching portions 25a and 25a.
- the inner sides of the tip portions of the pair of sandwiching portions 25a, 25a are formed on a tapered surface 25b (the same shape is also applied to one end portion of the first current-carrying terminal 3e on the three-phase side).
- Each connector fitting portion 33a to 33c is fitted with a connector fitting portion formed on an electrical connector of an external device (not shown) such as a power supply battery, and the other end portions of the terminals 25 to 27 are externally connected. Electrically connected to the terminal of the electrical connector of the device.
- the drive circuit board 7 converts the current supplied from the electrical connector 9 into three-phase (U-phase, V-phase, W-phase) alternating current, and drives the electric motor in accordance with a control signal from the control circuit board 8. Configure the module.
- the 2nd electricity supply terminal 35 for power supplies electrically connected with the one end part of each said 1st electricity supply terminal 25, and the upstream P for every said phase of a three-phase alternating current
- a drive transistor (drive element, switching element) 36 electrically connected in series with the downstream side Q, and a second energization terminal 37 for a three-phase motor electrically connected to one end of each first energization terminal 3e, Has been implemented.
- the drive transistor 36 is mounted on the drive circuit board 7 in an array of “two (a set in which the upstream side P and the downstream side Q are paired) ⁇ 3 sets (for three phases)”, and the upstream side of each set
- the second energization terminals 37 are arranged between the respective drive transistors 36 and the respective downstream drive transistors 36 to supply three-phase alternating current to the first energization terminals 3e.
- Each of the second energization terminals 35 is disposed opposite to one end of the first energization terminal 25, and each of the second energization terminals 37 is disposed opposite to one end of the first energization terminal 3e.
- Each of the second energizing terminals 35 and 37 is formed by bending a metal plate such as a copper material, and as shown in FIG. A shaft portion 41 is provided between the divided portions 40 and 40.
- each divided portion 40 bent in an L shape of each divided portion 40 is electrically joined to the drive circuit board 7 by soldering or welding, and the distal end portion on the shaft portion 41 side of both divided portions 40. And both end portions of the shaft portion 41 are embedded in a terminal holder 42 having a concave cross section. A vertically long opening 43 into which one end of the first energizing terminals 3e, 25 is inserted is formed in the upper portion of the terminal holder.
- the opening edge of the opening 43 is formed with an inclined surface 44 that guides one end of the first current-carrying terminals 3e and 25 when inserted, and a support portion (as a through hole) that supports the shaft portion 41 is formed in the opening 43. 43a) is formed.
- both the holding portions 25a of the first energization terminals 3e and 25 are coupled with the shaft portion 41 interposed therebetween, and the energization terminals 25 and 35 are connected. 3e, 37 are electrically connected.
- smoothing capacitor 38 smoothes the current supplied by the electrical connection between the current-carrying terminals 25 and 35 and supplies the smoothed current to each drive transistor 36.
- a group of through holes 45 for fixing to the cover 6 are formed.
- a shaft portion of a fixing screw (not shown) inserted through each through hole 45 is fastened to the female screw hole 21 of the cover 6 shown in FIG.
- the lead frame 15 of the present invention for connecting the drive circuit board 7 and the control circuit board 8 is attached to the left and right edges of the drive circuit board 7.
- the lead frame 15 is cut at the thin portion 15g as shown in FIG. 4 after the land connecting portion 15c is connected to the land portion 7d of the drive circuit board 7 as shown in FIGS.
- the connecting portion 15e is separated and removed from the lead portion 15d, and only the lead portion 15d remains on the drive circuit board 7.
- the control circuit board 8 is composed of a printed board (glass epoxy board) or a ceramic board. As shown in FIG. 6, the control circuit board 8 has a CPU (hereinafter abbreviated as a microcomputer) 46 that controls each drive transistor 36 and a hall element 47 that detects the rotation of the electric motor. .
- a CPU hereinafter abbreviated as a microcomputer
- the microcomputer 46 is mounted on the surface of the control circuit board 8 facing the drive circuit board 7, while the Hall element 47 is accommodated in the surface opposite to the microcomputer 46, that is, the opening 13 of the case 5.
- the microcomputer 46 and the hall element 47 are mounted on the opposite surface of S, and are electrically connected through the circuit pattern of the control circuit board 8, and the circuit pattern is a signal transmission path between the microcomputer 46 and the hall element 47.
- the Hall element 47 is arranged at a position facing the sensor magnet S on one end side of the control circuit board 8, detects the magnetic field of the sensor magnet S using the Hall effect, and the shaft 3a Detect rotation. This detection signal is input to the microcomputer 46 through the circuit pattern of the control circuit board 8.
- the tip of the terminal 15a of the lead frame 15 penetrates from one end of the control circuit board 8, and the tip is electrically connected to the control circuit board 8 by soldering or welding.
- a cutout portion 49 is formed on the other end portion side of the control circuit board 8 to allow one end portion of the energization terminal 25 to pass to the drive circuit board 7 side.
- One ends of the terminals 26 and 27 are inserted and electrically connected to both sides of the notch 49.
- the microcomputer 46 controls the drive transistor 36 based on information (for example, steering torque, vehicle speed signal, etc.) input from the outside through the terminals 26 and 27 of the electrical connector 9 and the detection signal of the Hall element 47.
- a group of through holes 48 are formed at the left and right edges of the control circuit board 8, and the shaft portion of the fixing screw 50 inserted through each through hole 48 is the board fixing portion 18 of the case 5 as shown in FIG. 8.
- the female screw hole 18a is fastened.
- the land connecting portion 15c of the lead frame 15 is used as a land of a circuit board such as the drive circuit board 7.
- the connecting part 15e is separated and removed from the lead part 15d, thereby suppressing the connecting part from occupying a useless space in the electronic control unit, and the electronic control unit is downsized. The weight can be reduced.
- the electric power shearing device has been described as an example of the electronic control device.
- the electronic control device is not limited to the electric power shearing device, but an electronic control device using a circuit board and a lead frame. Widely applied.
- the lead frame mounting method of the present invention includes a lead frame mounting step for mounting the lead frame on the circuit board, a lead frame fixing step for fixing the lead frame on the circuit board, and a lead frame fixed on the circuit board.
- a lead frame cutting step for cutting and removing unnecessary portions.
- the lead frame 15 is placed on the drive circuit board 7 as shown in FIGS.
- the lead frame 15 is placed by sucking the suction surface 15f on the surface of the connecting portion (pedestal portion) 15e with an automatic lead frame mounting device (not shown).
- the land connecting portion 15c is overlapped with the land portion 7d, and a part of the land connecting portion 15c (a portion including the thin portion 15g when the thin connecting portion 15c is formed in the land connecting portion 15c). ) Is positioned on the insulating layer 7b outside the land portion 7d.
- the overlapping portion of the land connecting portion 15c and the land portion 7d excluding the portion protruding outside the land portion 7d is connected and fixed with solder or the like.
- the portion protruding outside the land portion 7d is cut. By cutting the portion protruding outside the land portion 7d, the connection portion 15e that is no longer needed is separated from the lead portion 15d. Only the lead portion 15d remains on the drive circuit board 7 side.
- the land connecting portion in the lead frame mounting step, is overlapped with the land portion, and a part of the land connecting portion protrudes on an insulating layer outside the land portion.
- the land connection portion is connected and fixed to the land portion, leaving a portion protruding on the insulating layer, and in the cutting step, connection fixing is performed by solder or the like. Since it cuts the protruding part on the insulating layer that is not, (1) Cutting is easier than in the case where the portion connected and fixed to the circuit board is cut with solder or the like. (2) The stress at the time of cutting can be prevented from acting on the solder, the land connecting portion, and the land portion, and the connecting portion can be easily removed from the circuit board without applying a large load thereto.
- control circuit board 8 and the electrical connector 9 are attached to the case 5, and the drive circuit board 7 is attached to the cover 6.
- the shaft of the fixing screw 50 is inserted into each through hole 48 of the control circuit board 8 with the Hall element 47 facing the opening 13 of the cover 6 as shown in FIG. After that, the shaft portion of each fixing screw 50 is fastened to the female screw hole 18 a of each substrate fixing portion 18 of the case 5.
- the first connector C1 to the third connector C3, in which the resin molded part 30 is formed at the substantially central part of each of the terminals 25 to 27, are inserted into the fourth connector 28 and the connection is completed.
- 5 is attached to the outer peripheral edge of the opening 10. That is, as shown in FIG. 8, the mounting portion 28a of the fourth connector 28 is fitted into the circumferential groove 10b of the case 5, while the pin 31 is fitted into the hole 10a as shown in FIG. 10 (b).
- the shaft portion of the fixing screw is inserted into the through hole 30a and fastened to the female screw hole 12, and then one end portions of the terminals 26 and 27 are soldered to the control circuit board 8 by soldering or the like. Electrically join.
- the shaft portion of the fixing screw 50 is inserted into the through hole 45 of the drive circuit board 7 and fastened to the female screw hole 21 of the cover 6.
- the case 5 to which the electrical connector 9 and the control circuit board 8 are attached and the cover 6 to which the drive circuit board 7 is attached are assembled.
- one end of the first energizing terminal 25 on the connector side is made to face the second energizing terminal 35 for power supply mounted on the drive circuit board 7 through the notch 49 of the control circuit board 8.
- the fitting projection 23 of the cover 6 is fitted into the fitting groove 20 of the case 5.
- one end of the first energizing terminal 25 is inserted into the opening 43 of the second energizing terminal 35 by the fitting force of the fitting protrusion 23 into the fitting groove 20. That is, when the case 5 and the cover 6 are assembled, the both sandwiching portions 25a of the first energizing terminal 25 are directed toward the opening 43 while being guided by the inclined surface 44 of the second energizing terminal 35, and then to the tapered surface 25b.
- the shaft 41 is clamped by entering the opening 43 along the axis.
- each terminal 15a of the lead frame 15 is inserted into the control circuit board 8 and accommodated in the opening 16 of the case 5.
- the terminals 15a can be electrically joined to the control circuit board 8 by soldering or welding.
- the control circuit board 8 and the drive circuit board 7 can be arranged in a stacked state.
- the case 5 and the cover 6 are joined by inserting the shaft portion of the fixing screw into the through hole of the boss portion 22 of the cover 6 and fastening the shaft portion to the female screw hole of the boss portion 19 of the case 5.
- the assembly is completed.
- the electronic control unit 4 is attached to the motor unit 3 after such assembly work.
- the joint portion 11 of the case 5 is opposed to the opening 3d of the exterior portion 3f, and then the joint portion 11 is fitted into the opening 3d.
- one end of each first energizing terminal 3e faces each opening 14 of the case 5, so that the joint 11 is inserted into the opening 43 of the second energizing terminal 37 at the same time as the first energizing terminal 3e. Press fit. Therefore, both the clamping portions 25a and the shaft portion 41 are coupled, and the energization terminals 3e and 37 are directly electrically connected.
- the third member can be omitted, which can contribute to a reduction in the number of parts.
- the shaft portion of the fixing screw is inserted into the through hole of the boss portion 3g, and the shaft portion is fastened to the female screw hole 17 of the case 5, whereby the electronic control unit 4 is attached to the motor housing 3c.
- the electric motor and the power module are fixed to different housings (case 5 or cover 6), the thermal interference generated in each can be suppressed, and the heat dissipation can be improved.
- the second current-carrying terminal 37 is disposed between the upstream-side P drive transistor 36 and the downstream-side Q drive transistor 36 in view of the component arrangement of the drive circuit board 7, the shaft 3 a of the electric motor and the second Arrangement interference with the two energizing terminals 37 can be suppressed. Furthermore, since the wiring distance between both drive transistors 36 and the second energization terminal 37 can be shortened, the complexity of the wiring can also be suppressed.
- the assembly order of the electronic control unit 4 may be such that the motor unit 3 and the case 5 are assembled first, and then the case 5 and the cover 6 are assembled.
- a pressing mechanism 101 for pressing the land connecting portion 15c at the lower end of the pin-like terminal 15a of the lead frame 15 against the land portion 7d is provided.
- the pressing mechanism 101 includes a beam portion 102 connecting the terminals 15a on the upper end side of the plurality of pin-like terminals 15a, and a pair of support columns provided at both ends of the beam portion 102. 103 and 104.
- the length L1 of the column portions 103 and 104 below the beam portion 102 is longer than the length L2 of the terminal 15a below the beam portion 102.
- the land connecting portions 15c of the terminals 15a are pressed against the land portions 7d of the drive circuit board 7 via the beam portions 102.
- contact failure between the land connecting portion 15c and the land portion 7d is suppressed.
- the stress load at the time of pressing is absorbed by the elastic deformation of the bent portion 15b formed at the lower end of the terminal 15a, and the pressure acting on the solder fixing portion is suppressed to suppress the generation and deterioration of the solder fixing portion. it can.
- a pedestal portion 105 is provided at the upper end of the column portions 103 and 104, and the pedestal portion 105 is pressed by another circuit board, for example, the control circuit board 8.
- Electronic control device electric power steering device 4 ...
- Electronic control unit (ECU) 7 Drive circuit board (circuit board) 7a ...
- Metal plate 7b ... Insulating layer 7c ... Wiring pattern 7d ... Land part 8 ...
- Control circuit board 15 ... Lead frame 15a ... Pin-shaped terminal 15b ... Bending part 15c ... Land connecting part 15d ... Lead part 15e ... Connecting part 15f ... Adsorption surface 15g ... Thin part
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Power Steering Mechanism (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Lead Frames For Integrated Circuits (AREA)
Abstract
Description
前記連結部を、前記ランド接続部の先端部に、前記複数のリード部を起立させる板状の台座部を連設することにより形成した。
図1は、本発明のリードフレーム15の斜視図である。リードフレーム15は、ピン状の端子15aの下端部に屈曲部15bを介してランド接続部15cを形成した複数のリード部15dと、これら複数のリード部15dを連結した連結部15eとを備えている。
(1)連結部15eを使用し、リードフレーム15を起立状態に維持することが可能になりリードフレームの取り扱いが容易になる。
(2)連結部15eをリードフレーム自動搭載装置を使用してリードフレームを回路基板に搭載する際の吸着面として使用することができる。
(1)半田等により回路基板に接続固定されている部分を切断する場合に較べて、切断が容易になる。
(2)切断する際の応力が半田やランド接続部やランド部に作用するのを抑制し、これらに大きな負荷を与えることなく、連結部を回路基板から容易に取り除くことができる。
4…電子制御ユニット(ECU)
7…駆動回路基板(回路基板)
7a…金属板
7b…絶縁層
7c…配線パターン
7d…ランド部
8…制御回路基板
15…リードフレーム
15a…ピン状の端子
15b…屈曲部
15c…ランド接続部
15d…リード部
15e…連結部
15f…吸着面
15g…薄肉部
Claims (3)
- ピン状の端子の一端部に屈曲部を介してランド接続部を形成した複数のリード部と、これら複数のリード部を連結した連結部とを備え、
前記連結部は、前記ランド接続部の先端部に、前記複数のリード部を起立させる板状の台座部を連設することにより形成されたリードフレーム。 - 請求項1に記載のリードフレームを使用した電子制御装置であって、
前記ランド接続部は、その一部分が回路基板のランド部外の絶縁層上に突出されていて、突出部分を除いた部分が前記ランド部に接続固定され、
前記連結部は、前記ランド接続部が前記ランド部上に接続固定された後において前記ランド部外の突出した部分において切断されている電子制御装置。 - 請求項1に記載のリードフレームを回路基板に搭載するリードフレーム搭載方法であって、
前記ランド部に前記ランド接続部を重ねて、該ランド接続部の一部分を前記ランド部外の絶縁層上に突出させた状態で前記リードフレームを前記回路基板上に載置するリードフレーム載置ステップと、
前記絶縁層上に突出させた一部分を残して前記ランド接続部を前記ランド部に接続固定するリードフレーム固定ステップと、
前記ランド接続部を、前記絶縁層上に突出させた部分において切断して前記連結部を前記リード部から分離する切断ステップと、を備えたリードフレーム搭載方法。
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KR1020167000535A KR101834092B1 (ko) | 2013-09-19 | 2014-02-03 | 리드 프레임, 리드 프레임을 사용한 전자 제어 장치 및 리드 프레임 탑재 방법 |
DE112014004297.8T DE112014004297B4 (de) | 2013-09-19 | 2014-02-03 | Leiter-Rahmen und Elektronik-Steuervorrichtung mit einem Leiter-Rahmen |
US14/913,010 US9780016B2 (en) | 2013-09-19 | 2014-02-03 | Lead frame, electronic control device using lead frame, and lead-frame mounting method |
CN201480038566.1A CN105453259B (zh) | 2013-09-19 | 2014-02-03 | 引线框、使用引线框的电子控制装置及引线框搭载方法 |
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JP2013193854A JP2015060958A (ja) | 2013-09-19 | 2013-09-19 | リードフレーム、リードフレームを使用した電子制御装置及びリードフレーム搭載方法 |
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JP6486250B2 (ja) * | 2015-09-10 | 2019-03-20 | 日立オートモティブシステムズ株式会社 | 電動駆動装置 |
JP2017158223A (ja) * | 2016-02-29 | 2017-09-07 | オムロンオートモーティブエレクトロニクス株式会社 | 電動モータ制御装置 |
JP6783606B2 (ja) | 2016-09-29 | 2020-11-11 | 日立オートモティブシステムズ株式会社 | 接続端子組立体、及びこの接続端子組立体を使用した回路基板 |
US11088066B2 (en) * | 2018-03-19 | 2021-08-10 | Tactotek Oy | Multilayer structure and related method of manufacture for electronics |
JP6744056B1 (ja) * | 2019-04-16 | 2020-08-19 | 三菱電機株式会社 | リードフレーム及びこれを用いたセンサ装置 |
DE102019217186A1 (de) * | 2019-11-07 | 2021-05-12 | Robert Bosch Gmbh | Elektronische Baugruppe, insbesondere eine elektronische Leistungsbaugruppe für Hybridfahrzeuge oder Elektrofahrzeuge |
CN110993786B (zh) * | 2019-11-13 | 2023-05-30 | 合肥久昌半导体有限公司 | 一种多排大功率霍尔元件加工工艺 |
US11641071B2 (en) * | 2020-01-13 | 2023-05-02 | Te Connectivity Solutions Gmbh | Connection assembly and pin with a welding section |
JP6857273B1 (ja) * | 2020-08-18 | 2021-04-14 | 太平洋工業株式会社 | Icホルダ、電動弁、流体制御装置及びその製造方法 |
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- 2014-02-03 CN CN201480038566.1A patent/CN105453259B/zh active Active
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JP2015060958A (ja) | 2015-03-30 |
US20160211199A1 (en) | 2016-07-21 |
KR101834092B1 (ko) | 2018-03-02 |
CN105453259A (zh) | 2016-03-30 |
DE112014004297B4 (de) | 2023-06-01 |
CN105453259B (zh) | 2018-11-23 |
US9780016B2 (en) | 2017-10-03 |
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