WO2022180660A1 - 回路接続装置、回転電機装置および回路接続装置の製造方法 - Google Patents
回路接続装置、回転電機装置および回路接続装置の製造方法 Download PDFInfo
- Publication number
- WO2022180660A1 WO2022180660A1 PCT/JP2021/006749 JP2021006749W WO2022180660A1 WO 2022180660 A1 WO2022180660 A1 WO 2022180660A1 JP 2021006749 W JP2021006749 W JP 2021006749W WO 2022180660 A1 WO2022180660 A1 WO 2022180660A1
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- Prior art keywords
- heat sink
- hole
- board
- circuit board
- positioning
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 23
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- 238000003825 pressing Methods 0.000 description 14
- 238000004804 winding Methods 0.000 description 11
- 238000003780 insertion Methods 0.000 description 10
- 230000037431 insertion Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000017525 heat dissipation Effects 0.000 description 9
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- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
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- 238000007667 floating Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
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- 230000008901 benefit Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- 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
- H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
- H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
- H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
-
- 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
- H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
- H01R43/205—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve with a panel or printed circuit board
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0056—Manufacturing winding connections
- H02K15/0062—Manufacturing the terminal arrangement per se; Connecting the terminals to an external circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
-
- 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
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
- H02K2211/03—Machines characterised by circuit boards, e.g. pcb
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/227—Heat sinks
Definitions
- This application relates to a circuit connection device, a rotating electric machine, and a method of manufacturing a circuit connection device.
- the circuit connection device that connects to a through hole of a circuit board at a predetermined distance from the housing of a connector for external connection.
- the circuit connection device is a device in which a circuit board on which electronic components are mounted and terminals of a connector for external connection are extended and connected to through holes of the circuit board.
- a circuit connection device is used in a control unit of a rotating electric machine. Heat-generating components such as an inverter for controlling the rotating electrical machine, switching elements used in power supply circuits, shunt resistors, microcomputers, and ICs are mounted on the circuit board of the control unit of the rotating electrical machine.
- the circuit board is brought into close contact with a heat sink for cooling, and a connector for external connection is connected to the circuit board with the heat sink interposed therebetween.
- the terminals of the connector are connected to the through holes of the circuit board across a predetermined space where the heat sink is provided from the housing of the connector.
- Press-fit terminals are sometimes used to connect through-holes in connectors and circuit boards.
- a press-fit terminal is a terminal that can be electrically connected by being inserted into a through-hole of a circuit board.
- press-fit terminals electrical connection between the circuit board and the connector terminals can be ensured without soldering. Therefore, by using the press-fit terminal, it is possible to facilitate the manufacture of the circuit connecting device and shorten the manufacturing time. As a result, the cost of the circuit connecting device can be reduced.
- a circuit connection device has been proposed in which a press-fit terminal is used to connect to a through-hole of a circuit board at a predetermined distance from the housing of a connector for external connection.
- a technique for installing a terminal alignment member on a circuit board has been disclosed in order to facilitate insertion of press-fit terminals into the through-holes of the circuit board even if the distance from the housing of the connector to the through-holes of the circuit board is increased.
- the terminal aligning member has a through hole that matches the through hole of the circuit board, and is provided with a guide hole that communicates with the through hole and expands toward the outer surface. This guide hole adjusts the position of the press-fit terminal of the connector to facilitate insertion into the through hole.
- Patent Document 1 With the technology disclosed in Patent Document 1, it is necessary to additionally arrange a terminal alignment member on the circuit board. As a result, the number of parts of the circuit connecting device increases, and the product cost rises. In addition, since a step of assembling the terminal alignment member to the circuit board is required, the number of steps increases, the manufacturing cost rises, and the product cost further rises. In addition, when the relative position between the connector and the circuit board deviates greatly from the standard dimension, the tip of the press-fit terminal collides with the guide hole of the terminal alignment member or the periphery of the guide hole at an obtuse angle, and the terminal buckles, resulting in poor quality. There is concern that it may have an adverse effect.
- the circuit connection device is a technique for solving the problems of the conventional devices as described above.
- a circuit connection device that connects to a through-hole of a circuit board at a specified distance from a connector housing equipped with a press-fit terminal
- the press-fit terminal and the through-hole of the circuit board are positioned with high accuracy to improve reliability.
- Another object of the present invention is to obtain a rotating electric machine device including such a circuit connection device.
- a manufacturing method for manufacturing a circuit connecting device by positioning the press-fit terminal and the through hole of the circuit board with high precision, improving reliability, and suppressing an increase in cost by a simple assembly process without requiring a terminal alignment member. The purpose is to obtain
- the circuit connection device is A connector having a housing in which a connection terminal is accommodated inside a container having an opening, a positioning guide provided on a side of the housing different from the opening, and a press-fit terminal extending from the connection terminal, a heat sink having a guide receiving portion fitted to the positioning guide portion and an opening through which the press-fit terminal penetrates, and to which the housing is fixed;
- the circuit board has a board positioning guide portion and a through hole to which a press-fit terminal is crimped, and is fixed to the surface of the heat sink opposite to the surface to which the housing is fixed.
- a rotating electric machine device includes the circuit connection device described above.
- a method for manufacturing a circuit connection device comprises: A circuit board having a through-hole into which a press-fit terminal is inserted and a through-hole for positioning the board passes through the through-hole and the press-fit terminal that are concentric with the through-hole for board positioning and have an inner diameter smaller than the inner diameter of the through-hole for positioning the board.
- the press-fit terminal and the through hole of the circuit board are positioned with high accuracy, the reliability is improved, and the terminal alignment member is not required, and the simple assembly process suppresses the increase in product cost. can do.
- the press-fit terminals and the through holes of the circuit board are positioned with high accuracy, the reliability is improved, the terminal alignment member is not required, and the simple assembly process increases the product cost. It is possible to provide a circuit connection device that suppresses the Therefore, it is possible to improve the reliability of the rotary electric machine and suppress the increase in cost.
- the press-fit terminal and the through hole of the circuit board can be positioned with high precision without requiring a terminal alignment member, the reliability can be improved, and the cost can be reduced by a simple assembly process. can be produced while suppressing an increase in
- FIG. 1 is a cross-sectional view of a rotating electric machine device according to Embodiment 1;
- FIG. 1 is a perspective view of a circuit connecting device according to Embodiment 1;
- FIG. 1 is a perspective view of a circuit board of a circuit connecting device according to Embodiment 1;
- FIG. 3 is a perspective view of the connector of the circuit connecting device according to Embodiment 1, viewed from the heat sink mounting surface side;
- FIG. 2 is a perspective view of the connector of the circuit connecting device according to Embodiment 1, viewed from the connector insertion/removal side;
- FIG. 2 is a perspective view of a heat sink of the circuit connecting device according to Embodiment 1;
- FIG. 1 is a cross-sectional view of a rotating electric machine device according to Embodiment 1;
- FIG. 1 is a perspective view of a circuit connecting device according to Embodiment 1;
- FIG. 1 is a perspective view of a circuit board of a circuit connecting device according
- FIG. 1 is a perspective view of a board assembly jig for a circuit connecting device according to Embodiment 1.
- FIG. 2 is a first assembly diagram of the circuit connecting device according to Embodiment 1.
- FIG. 4 is a second assembly diagram of the circuit connecting device according to Embodiment 1.
- FIG. 4 is a third assembly diagram of the circuit connecting device according to Embodiment 1.
- FIG. 4 is a fourth assembly diagram of the circuit connecting device according to Embodiment 1.
- FIG. FIG. 5 is a fifth assembly diagram of the circuit connecting device according to Embodiment 1; 1 is a cross-sectional view of a circuit board assembly of the circuit connecting device according to Embodiment 1.
- FIG. 10 is a perspective view of a guide jig of the circuit connecting device according to Embodiment 2;
- FIG. 10 is a cross-sectional view of the circuit board assembly of the circuit connecting device according to the second embodiment;
- FIG. 11 is a cross-sectional view of the circuit board assembly of the circuit connecting device according to Embodiment 3;
- FIG. 12 is a perspective view of the connector of the circuit connecting device according to the fourth embodiment, viewed from the heat sink mounting surface side;
- FIG. 14 is a front view of the connector of the circuit connecting device according to the fourth embodiment, viewed from the heat sink mounting surface side;
- FIG. 1 is a cross-sectional view showing the configuration of a rotating electric machine device 100. As shown in FIG. 1 shows a cross section of a rotor 5 of a rotating electrical machine 1 provided in a rotating electrical machine device 100 along a rotating shaft 4 .
- a rotating electrical machine device 100 includes a multiphase winding type rotating electrical machine 1 and a circuit connection device 2 .
- the circuit connection device 2 includes a circuit board 11 on which electronic components are mounted, and a terminal extending from the housing of a connector 17 for external connection and connected to a through hole of the circuit board 11 at a predetermined distance.
- the circuit connection device 2 is a control unit that controls the current flowing through the armature winding 7 of the stator 6 of the rotary electric machine 1 .
- the circuit connection device 2 has a heat sink 10 between the connector 17 and the circuit board 11 .
- the rotary electric machine 1 has a rotating shaft 4 built in a cylindrical case 3, a rotor 5 fixed to the rotating shaft 4, and an inner peripheral surface facing the outer peripheral surface of the rotor 5 via an air gap.
- a stator 6 is provided.
- the stator 6 is wound with an armature winding 7 and is press-fitted and fixed to the inner surface of the case 3 .
- the output side of the rotary shaft 4 is shown on the lower side, and the non-output side is shown on the upper side.
- a circular wiring portion 8 is arranged on the non-output side of the armature winding 7 .
- the annular wiring portion 8 is connected to the end portion of the armature winding 7 by TIG welding or the like.
- the wiring connection terminal 9 extends through the heat sink 10 from the annular wiring portion 8 to the non-output side of the rotating shaft 4 of the rotating electric machine.
- the wiring connection terminal 9 is electrically connected to the winding end portion of the armature winding 7 via the annular wiring portion 8 .
- the wiring connection terminals 9 are three conductors connected to the U-phase winding wiring connection terminal, the V-phase winding wiring connection terminal, and the W-phase winding wiring connection terminal of the armature winding 7, respectively. consists of The wiring connection terminals 9 of each phase extend into the circuit connection device 2 and are connected to the circuit board 11 by soldering or the like.
- a plurality of pairs of permanent magnets (not shown) forming field poles are arranged on the rotor 5 on its peripheral surface.
- a first bearing 12a and a second bearing 12b that rotatably support the rotating shaft 4 are arranged on the non-output side and the output side of the rotating shaft 4 with respect to the rotor 5, respectively.
- the first bearing 12 a is arranged on the rotating shaft portion of the heat sink 10 .
- the heat sink 10 serves as a lid that closes the inside of the rotary electric machine device 100 .
- the second bearing 12 b is fixed to the structure 13 on the output side of the rotary electric machine device 100 .
- a sensor rotor 14 is fixed to the end of the rotary shaft 4 opposite to the output side.
- the sensor rotor 14 has one or more pairs of permanent magnets.
- FIG. 2 is a perspective view of the circuit connecting device 2 according to Embodiment 1.
- FIG. The outer layer of the circuit connecting device 2 is covered with a cover 15 (FIG. 2 shows a state in which the cover 15 is removed).
- the circuit connecting device 2 includes a heat sink 10 , connectors 17 attached to both sides of the heat sink 10 , and a circuit board 11 .
- the connector 17 is attached to the connector attachment surface 10 a of the heat sink 10 .
- the circuit board 11 is attached to the circuit board attachment surface 10 b of the heat sink 10 .
- FIG. 2 shows an example in which the connector insertion/extraction side surface 17b of the connector 17 faces the output side, it is also possible to configure the connector insertion/extraction side surface 17b to face the opposite output side.
- FIG. 3 is a perspective view of the circuit board 11 of the circuit connecting device 2 according to Embodiment 1, viewed from the board heat sink mounting surface 11a.
- the circuit board 11 is also called a printed wiring board.
- a rotation sensor 20 is arranged on the circuit board 11 coaxially with the sensor rotor 14 with a gap therebetween. The rotation sensor 20 detects changes in the magnetic field from the permanent magnet of the sensor rotor 14 that rotates with the rotation of the rotary shaft 4 and converts them into electric signals.
- the rotation sensor 20 has been described as a magnetic sensor, a resolver, Hall sensor, optical sensor, or the like may be used.
- heat-generating electronic components such as a microcomputer 21, a switching element 22, and a shunt resistor 23 are mounted. These are collectively referred to as heat-generating components 18 .
- Large electronic components such as a smoothing capacitor 24 are mounted on the circuit board 11 .
- the circuit board 11 is provided with a terminal connecting portion 27 in which through holes 26 for inserting the press-fit terminals 25 of the connector 17 are arranged. Board positioning through holes 28 are provided in the circuit board 11 so as to sandwich the terminal connection portion 27 .
- FIG. 4 is a perspective view of the connector 17 of the circuit connecting device 2 according to Embodiment 1, viewed from the side of the heat sink mounting surface 17a.
- FIG. 5 is a perspective view of the connector 17 of the circuit connecting device 2 according to Embodiment 1, viewed from the connector insertion/extraction side surface 17b.
- the connector 17 includes a power supply side housing 16a containing power terminals 29 connected to an external power supply (battery) and a signal side housing 16b containing signal terminals 30 connected to sensors.
- the housing 16 includes the power supply side housing 16a and the signal side housing 16b.
- the housing 16 has a container shape with an opening and accommodates the connection terminals.
- an example in which the housing 16 is divided into two parts is shown, but it may be a single container as a whole. Also, it may be divided into three or more container shapes.
- the connection terminals may all have the same shape, or may have three or more different shapes.
- a press-fit terminal 25 extends from the power terminal 29 and the signal terminal 30 and is connected to the circuit board 11 .
- the press-fit terminal 25 extends to the opposite side with respect to the power terminal 29 and the signal terminal 30 arranged on the opening side of the housing 16 is shown.
- the press-fit terminals 25 may extend in a direction different from the opening of the housing 16, such as a direction perpendicular to the opening.
- the press-fit terminals 25 extending from the heat sink mounting surface 17 a of the connector 17 are connected to the through holes 26 of the circuit board 11 .
- the press-fit terminals 25 are terminals that can be electrically connected by being inserted into the through holes 26 of the circuit board 11 .
- electrical connection between the circuit board 11 and the terminals of the connector 17 can be ensured without soldering. Therefore, by using the press-fit terminal 25, it is possible to facilitate the manufacture of the circuit connecting device 2 and shorten the manufacturing time. Thereby, the cost of the circuit connection device 2 can be reduced.
- the connector 17 is provided with a columnar positioning protrusion 32 for determining the position with respect to the heat sink 10 .
- the positioning protrusions 32 extend parallel to the press-fit terminals 25 .
- the positioning protrusions 32 are provided on both sides of the press-fit terminal 25 . Therefore, the positioning protrusions 32 enable accurate position adjustment of the press-fit terminals 25 .
- the length from the tip of the positioning protrusion 32 to the connector mounting surface 10a of the heat sink 10 is longer than the length from the tip of the press-fit terminal 25 to the substrate heat sink mounting surface 11a of the circuit board 11.
- the length of the protrusion 32 is set.
- the press-fit terminals 25 are inserted after the positioning protrusions 32 of the connector 17 are inserted into the through holes 36 of the heat sink 10. Insertion into the through hole 26 of the circuit board 11 is started. Before the press-fit terminals 25 are inserted into the through holes 26 of the circuit board 11, the positioning projections 32 of the connector 17 are inserted into the through holes 36 of the heat sink 10 and positioned accurately. As a result, the press-fit terminals 25 can be smoothly inserted into the through-holes 26 of the circuit board 11 .
- the tip of the press-fit terminal 25 collides with the periphery of the through-hole 26 of the circuit board 11 and the press-fit terminal 25 buckles, which adversely affects the quality. can be prevented.
- FIG. 6 is a perspective view of the heat sink 10 of the circuit connecting device 2 according to Embodiment 1 as viewed from the circuit board mounting surface 10b.
- Heat radiation grease 34 is applied to the heat radiation portion 33 provided on the circuit board mounting surface 10 b of the heat sink 10 .
- the heat-generating components 18 such as the switching element 22 and the shunt resistor 23 mounted on the circuit board 11 that require heat dissipation can dissipate heat to the heat sink 10 via the heat dissipation grease 34 .
- the circuit board mounting surface 10b of the heat sink 10 is provided with a large-sized component housing portion 38 for preventing interference with large-sized electronic components such as the smoothing capacitor 24.
- the rotating shaft through-hole 19 is a through-hole through which the rotation sensor 20 detects the rotation state of the rotating shaft 4 by means of the sensor rotor 14 attached to the non-output side end of the rotating shaft.
- FIG. 5 shows an example in which the electronic components that require heat dissipation are arranged on the surface of the circuit board 11 on the output side of the rotating shaft, the electronic components are arranged on the surface of the circuit board 11 on the counter-output side of the rotating shaft.
- the heat dissipation grease 34 may be filled between the circuit board 11 and the heat sink 10 in areas other than the area where the heat generating components 18 are present.
- the heat sink 10 is provided with openings 35 to prevent interference when the press-fit terminals 25 of the connector 17 are inserted into the through holes 26 of the circuit board 11 . Further, a through hole 36 is provided to fit the positioning protrusion 32 of the connector 17 .
- the board positioning through hole 28 of the circuit board 11, the positioning protrusion 32 of the connector 17, and the through hole 36 of the heat sink 10 are coaxially arranged.
- the diameter of the through hole 36 of the heat sink 10 is set smaller than the diameter of the board positioning through hole 28 of the circuit board 11 and slightly larger than the diameter of the positioning projection 32 of the connector.
- the connector 17 can be attached by fitting the positioning projections 32 of the connector 17 into the through holes 36 of the heat sink 10 . Since the respective relative positions are accurately adjusted, the press-fit terminals 25 of the connector 17 can be easily and accurately press-fitted into the through holes 26 of the circuit board 11 .
- the positioning protrusions 32, the through holes 36, and the board positioning through holes 28 are provided in order to adjust the positional relationship of the connector 17, the heat sink 10, and the circuit board 11 .
- the positioning projections 32 of the connector 17 can be replaced with the positioning recesses 332 as long as they serve as positioning guides.
- a connector positioning protrusion 336 is provided instead of the through hole 36, and is fitted into the positioning recess 332 of the connector 17 to achieve accurate position adjustment. good too.
- the board positioning through hole 28 is used as it is, and the board positioning protrusion 337 is formed on the heat sink 10 so that the position can be adjusted by fitting. may be provided. (Positioning recess 332, connector positioning projection 336, and board positioning projection 337 are not shown)
- the relative positions of the heat sink 10 and the circuit board 11 are adjusted by fitting the board positioning projections 337 into the board positioning through holes 28, and after the heat sink is assembled accurately.
- the connector 17 can be attached accurately by fitting the connector positioning recess 332 of the connector 17 to the connector positioning protrusion 336 of the connector 10 .
- the press-fit terminals 25 of the connector 17 can be easily and accurately press-fitted into the through-holes 26 of the circuit board 11 .
- FIG. 7 is a perspective view of the board assembly jig 37 of the circuit connecting device 2 according to the first embodiment.
- the substrate assembly surface 37a of the substrate assembly jig 37 has jig positioning protrusions 39 for determining the position with respect to the heat sink 10, and presses the circuit substrate 11 and presses the heat dissipation grease 34 applied to the heat sink 10.
- a pressure projection 40 made of a soft elastic material for spreading is provided.
- the jig positioning protrusion 39 of the board assembly jig 37 is provided with a first columnar portion 41 , a second columnar portion 42 , an intermediate tapered portion 43 and a tip tapered portion 44 .
- the diameter of the first columnar portion 41 is set to be smaller than the diameter of the second columnar portion 42 and slightly smaller than the diameter of the through hole 36 provided in the heat sink 10 .
- the diameter of the second columnar portion 42 is set slightly larger than the diameter of the board positioning through hole 28 provided in the circuit board 11 .
- the angle of the intermediate tapered portion 43 is set within the range of 1° to 60° with respect to the cylindrical portions of the first columnar portion 41 and the second columnar portion 42 .
- the pressurizing protrusion 40 is desirably arranged around the heat-generating component 18 that requires heat dissipation. This is for spreading the heat dissipation grease 34 .
- a floating mechanism (not shown) is provided between the board assembly jig 37 and the equipment so that the board assembly jig 37 can move freely in a direction parallel to the board assembly surface 37a. .
- a jig for fixing the heat sink 10 is provided directly under the heat sink 10 (not shown).
- FIG. 8 is a first assembly drawing.
- the board assembly jig 37 is set upside down from that in FIG. 7 so that the board assembly surface 37a faces downward.
- the circuit board 11 is mounted on the board mounting jig 37 from below with the board heat sink non-mounting surface 11b of the circuit board 11 facing upward.
- the state before the first columnar portion 41 of the board assembly jig 37 is inserted into the board positioning through-hole 28 of the circuit board 11 is shown.
- Fig. 9 is a second assembly drawing. 9 shows a state in which the circuit board 11 is mounted on the circuit board mounting surface 10b of the heat sink 10 while being set on the board mounting jig 37.
- FIG. The circuit board mounting surface 10b of the heat sink 10 is called a front surface.
- the first columnar portion 41 of the board assembly jig 37 is inserted into the through hole 36 of the heat sink 10 . At this time, a gap is generated between the first columnar portion 41 and the through hole 36 .
- Fig. 10 is a third assembly diagram.
- a load is applied in the direction perpendicular to the substrate non-assembly surface 37b, which is the rear surface of the substrate assembly surface 37a of the substrate assembly jig 37 (in the direction of the arrow in FIG. 10).
- the circuit board 11 is pressed against the heat sink 10 and fixed by screwing.
- the board assembly jig 37 is provided with through holes for screwing.
- FIG. 13 shows a cross-sectional view of the circuit board 11 and the heat sink 10 screwed together in FIG. 10 along the broken line indicated by XIII--XIII.
- Fig. 11 is a fourth assembly diagram.
- the circuit board 11 and the heat sink 10 fixed with screws are removed from the board assembly jig 37, turned upside down, and installed with the connector mounting surface 10a of the heat sink 10 facing up.
- a connector mounting surface 10a of the heat sink 10 is called a back surface.
- the positioning protrusions 32 of the connector 17 are inserted into the through holes 36 of the heat sink 10 .
- Fig. 12 is a fifth assembly diagram.
- the connector 17 is pushed into the heat sink 10, and a load is applied in the vertical direction to the connector insertion/extraction side surface 17b, which is the back side of the heat sink mounting surface 17a of the connector 17 (in the direction of the arrow in FIG. 12).
- a press-fit terminal 25 is press-fitted into the through-hole 26 and fixed.
- pressure may be applied from the tip of the press-fit terminal 25 in the axial direction, if necessary. This is because there is a type of press-fit terminal 25 that is crimped into the through-hole 26 after being enlarged in diameter by axial pressure. In the case of a product that maintains electrical contact simply by inserting it into the through hole 26, the step of applying pressure from the tip in the axial direction can be omitted.
- FIG. 13 is a circuit board assembly cross-sectional view of the circuit connection device 2 according to the first embodiment.
- FIG. 11 is a cross-sectional view of the board assembly jig 37, the circuit board 11 and the heat sink 10 shown in FIG. 10 taken along the broken line indicated by XIII-XIII.
- a load is applied to the circuit board 11 by the board assembly jig 37 (indicated by the arrow in FIG. 13).
- the intermediate tapered portion 43 of the jig positioning protrusion 39 is pressed against the edge of the board positioning through hole 28 of the circuit board 11 .
- the position of the circuit board 11 is horizontally moved and adjusted so that the centers of the board positioning through-hole 28 and the intermediate tapered portion 43 of the jig positioning protrusion 39 are aligned with each other.
- the heat dissipation grease 34 applied to the heat sink 10 is spread by the pressurizing protrusions 40 .
- the horizontal position of the heat sink 10 with respect to the jig positioning protrusion 39 is adjusted by inserting the first columnar portion 41 of the jig positioning protrusion 39 having the tip tapered portion 44 into the through hole 36 of the heat sink 10 . adjusted.
- the horizontal position of the circuit board 11 with respect to the jig positioning protrusion 39 can be accurately positioned. adjusted.
- the horizontal positions of the heat sink 10 and the circuit board 11 are accurately adjusted.
- the positions of the press-fit terminals 25 of the connector 17 and the through-holes 26 of the circuit board 11 are precisely matched, and the press-fit terminals 25 are smoothly inserted into the through-holes 26. can be inserted into
- the positioning protrusions 32 of the connector 17 are inserted into the through holes 36 of the heat sink 10 . Thereby, the positions of the connector 17 and the heat sink 10 are adjusted. After that, the connector 17 is moved in the direction in which the heat sink mounting surface 17 a of the connector 17 and the connector mounting surface 10 a of the heat sink 10 are in contact with each other, and the press-fit terminals 25 are inserted into the through holes 26 .
- the heat sink 10 is provided with the openings 35 to prevent interference between the press-fit terminals 25 and the heat sink 10, and the circuit board 11 and the connector 17 are accurately arranged through the heat sink 10. It becomes possible to The board positioning through hole 28 of the circuit board 11, the positioning protrusion 32 of the connector 17, and the through hole 36 of the heat sink 10 are coaxially arranged. As a result, by positioning the circuit board 11 and the connector 17 using the through-holes 36 provided in the heat sink 10, it is possible to reduce the positional variation during assembly. can be positioned with high accuracy.
- the positioning protrusions 32 are provided on both sides of the press-fit terminal 25 . Therefore, it is possible to position the press-fit terminal 25 and the center of the through-hole 26 with high accuracy by the positioning protrusion 32 .
- the circuit board 11 of the circuit connection device 2 of the rotating electrical machine device 100 is mounted with heat-generating components 18 such as an inverter for controlling the rotating electrical machine 1, switching elements used in power supply circuits and the like, shunt resistors, microcomputers, and ICs. Therefore, the circuit board 11 is cooled with the heat sink 10 in close contact with the circuit board 11, and the connector 17 for external connection is often connected to the circuit board 11 with the heat sink 10 interposed therebetween. In such a case, the heat sink 10 positioned between the housing 16 of the connector 17 and the circuit board 11 can be used to accurately adjust the positions of the connector 17 and the circuit board 11, thereby eliminating the need for a terminal alignment member.
- the circuit connecting device 2 can be provided by a simple assembly process.
- Such an advantage is applicable not only to the rotating electric machine device 100 but also to the circuit connection device 2 in many application fields such as an inverter device, a DC-DC converter device, and a microcomputer application control device using the circuit connection device 2 using a heat sink. can do.
- the diameter of the board positioning through hole 28 of the circuit board 11 is made larger than the diameter of the through hole 36 of the heat sink 10 . For this reason, a load is applied to the board assembly jig 37, and the intermediate tapered portion 43 of the jig positioning protrusion 39 is pressed against the edge of the board positioning through hole 28 of the circuit board 11, so that the mutual centers are aligned.
- the horizontal position of the circuit board 11 can be adjusted to match. This makes it possible to assemble the circuit board 11 to the heat sink 10 with high accuracy.
- the length from the tip of the positioning protrusion 32 of the connector 17 to the connector mounting surface 10a of the heat sink 10 is longer than the length from the tip of the press-fit terminal 25 to the substrate heat sink mounting surface 11a of the circuit board 11.
- the length of the protrusion 32 is set.
- the heat dissipation grease 34 can be spread out by the pressurizing protrusions 40, so the assembly process can be simplified and the product cost can be reduced.
- manufacturing costs can be reduced because high-accuracy positioning can be achieved with a space-saving and simple structure without increasing the number of parts.
- the press-fit terminals 25 can be positioned in the through holes 26 with high accuracy, the reliability can be improved, and the manufacturing can be performed by a simple assembly process. Product costs can be suppressed. Further, it is possible to provide a method of manufacturing the circuit connecting device 2 in which the press-fit terminal 25 is positioned in the through hole 26 with high accuracy, the reliability is improved, and the manufacturing cost is suppressed by a simple assembly process.
- Embodiment 2 will be described based on the drawings.
- a circuit connecting device 2 according to Embodiment 2 is a modification of Embodiment 1, and aims to further improve the positioning accuracy of press-fit terminals 25 and through holes 26 .
- a configuration will be described in which the tip tapered portion 44 of the board assembly jig 37 is pressed against the concave portion 48 of the guide jig 47 provided in contact with the connector mounting surface 10 a of the heat sink 10 .
- FIG. 14 is a perspective view of the guide jig 47 of the circuit connecting device 2 according to Embodiment 2, viewed from the lower support surface 47a of the heat sink.
- the guide jig 47 has a cylindrical guide projection 50 having a tip tapered portion 49 and a concave portion 48 provided on the tip surface.
- the only differences from the circuit connecting device 2 according to the first embodiment are the shape of the through hole 136 of the heat sink 110 and the addition of the guide jig 47 . Therefore, the reference numerals of the circuit connecting device 2 are the same as those in the first embodiment.
- FIG. 15 is a circuit board assembly sectional view of the circuit connecting device 2 according to the second embodiment.
- the guide jig 47 is attached to the connector mounting surface 110a of the heat sink 110 from below.
- a stepped hole 51 having a larger diameter than the through hole 136 is provided coaxially with the through hole 136 provided in the heat sink 110 on the side of the connector mounting surface 110a of the through hole 136 .
- the shapes of the circuit board 11, the board assembly jig 37 and the connector 17 are the same as in the first embodiment.
- the tapered end portion 49 of the guide jig 47 is pressed against the edge of the stepped hole 51 provided in the heat sink 110 . After that, the first columnar portion 41 of the jig positioning protrusion 39 of the substrate assembly jig 37 is inserted into the through hole 136 of the heat sink 110 in a state where the circuit board 11 is assembled to the substrate assembly jig 37 .
- a stepped hole 51 having a larger diameter than the through hole 36 is provided coaxially with the through hole 36 provided in the heat sink 10 .
- the horizontal position of the heat sink 110 is accurately adjusted with respect to the guide jig 47 by pressing the tip tapered portion 49 of the guide projection 50 of the guide jig 47 against the edge of the stepped hole 51 of the heat sink 110 . be.
- the diameter of the guide protrusion 50 is increased, and a concave portion 48 with which the tip tapered portion 44 of the board assembly jig 37 abuts is provided at the tip of the guide protrusion 50 .
- the substrate assembly jig is activated. While adjusting the relative positions of the tool 37 and the guide jig 47, the positions of the board assembly jig 37 and the heat sink 110 are adjusted.
- a load larger than the load for pressing the guide jig 47 against the heat sink 10 is applied to the substrate non-assembly surface 37b of the substrate assembly jig 37 in the vertical direction. After adjusting the position of , the positions of the circuit board 11 and the board assembly jig 37 can be adjusted. Therefore, the positions of the circuit board 11 and the heat sink 10 can be adjusted with high accuracy. That is, in addition to the effects of the first embodiment, it is possible to position the heat sink 10 and the circuit board 11 with higher accuracy.
- Embodiment 3 A third embodiment will be described with reference to the drawings.
- the circuit connecting device 2 according to Embodiment 3 is a modification of Embodiment 1, and in addition to improving the positioning accuracy of the press-fit terminals 25 and the through holes 26, the load on the circuit board 11 during assembly is reduced. It is intended to In this embodiment, a configuration in which the cylindrical movable projection 53 of the board assembly jig 137 moves in the axial direction will be described.
- FIG. 16 is a circuit board assembly cross-sectional view of the circuit connection device 2 according to the third embodiment.
- the substrate assembly jig 137 of Embodiment 3 includes a movable plate 54 to which a cylindrical movable projection 53 is fixed, a base plate 56 having a fixed projection 55 passing through the cylindrical interior of the movable projection 53, and a pressurizing projection 140. , a spring 57 disposed between the movable plate 54 and the base plate 56 through the fixed protrusion 55 .
- the only differences from the circuit connecting device 2 of the first embodiment are the shape of the through hole 236 of the heat sink 210 and the configuration of the board assembly jig 137 . Therefore, the reference numerals of the circuit connecting device 2 are the same as those in the first embodiment.
- a board pressing portion 58 is provided at the tip of the movable projection 53 and a tapered tip portion 59 is provided at the tip of the fixed projection 55 . Further, the movable plate 54 is provided with relief holes 60 through which the pressurizing protrusions 140 pass. A stepped hole 61 having a diameter larger than that of the through hole 236 is provided coaxially with the through hole 236 of the heat sink 210 on the circuit board mounting surface 210 b side of the through hole 236 .
- the shapes of the circuit board 11 and the connector 17 are the same as those of the first embodiment.
- the board pressing portion 58 is pressed against the edge of the board positioning through hole 28 of the circuit board 11, and the spring 57 The circuit board 11 is pressed against the heat sink 210 due to the reaction force.
- the tip tapered portion 59 of the fixing projection 55 comes into contact with the edge of the stepped hole 61 of the heat sink 210 .
- a stepped hole 61 having a larger diameter than the through hole 236 is provided coaxially with the through hole 236 of the heat sink 210 on the side of the circuit board mounting surface 210b of the through hole 236.
- the length of the substrate pressing portion 58 of the movable protrusion 53 can be set long.
- the positions of the heat sink 10 and the board assembly jig 137 can be accurately adjusted by pressing the tip tapered portion 59 of the fixing projection 55 against the edge of the stepped hole 61 of the heat sink 10 . Further, by pressing the board pressing portion 58 of the movable protrusion 53 against the edge of the board positioning through hole 28 of the circuit board 11, the positions of the circuit board 11 and the board assembly jig 137 can be adjusted with high precision. can.
- a circuit connecting device 2 according to Embodiment 4 is a modification of Embodiments 1 to 3, and aims to further improve the positioning accuracy of press-fit terminals 25 and through holes 26 .
- the circuit connecting device 2 according to the fourth embodiment is characterized in that the projecting portion of the connector 17 is provided with press-fit fixing ribs.
- FIG. 17 is a perspective view of the connector 117 of the circuit connecting device 2 according to Embodiment 4, viewed from the side of the heat sink mounting surface 117a.
- FIG. 18 is a front view of the connector 117 viewed from the side of the heat sink attachment surface 117a.
- a first protrusion 64 and a second protrusion 65 are provided on the heat sink mounting surface 117 a of the connector 117 .
- the first projecting portion 64 has a cylindrical columnar portion 64b and four ribs 64a arranged at right angles to each other at intervals around the columnar portion.
- the rib 64a extends parallel to the axis of the columnar portion 64b.
- the second projecting portion 65 has a cylindrical columnar portion 65b and two ribs 65a arranged on the same line with a space therebetween around the columnar portion.
- the rib 65a extends parallel to the axis of the columnar portion 65b.
- Inclined portions 64c and 65c are provided at the tips of the columnar portions 64b and 65b and the ribs 64a and 65a so that the diameter decreases toward the tips. This makes it easier to insert the first protrusion 64 and the second protrusion 65 into the through hole 36 of the heat sink 10 . In addition, even if the ribs 64a and 65a are scraped off when press-fitted, foreign matter is less likely to be generated.
- the shapes of the circuit board 11, the heat sink 10, and the board assembly jig 37 are the same as in the first embodiment. The effect obtained by the device configured as above will be described.
- the connector 117 is inserted in the direction in which the heat sink mounting surface 117a of the connector 117 and the connector mounting surface 10a of the heat sink 10 are in contact.
- the planar position of the connector 117 is regulated by the four ribs 64 a provided on the first protrusion 64 and the through holes 36 provided on the heat sink 10 .
- the position in the rotational direction is regulated by two ribs 65 a provided on the second protrusion 65 of the connector 117 and the through hole 36 provided on the heat sink 10 .
- the connector 17 is fixed by press-fitting the ribs 64a, 65b around the columnar portions 64b, 65b of the connector 117 into the inner periphery of the through hole 36 of the heat sink 10.
- the number of ribs 65a provided on the second projection 65 smaller than that on the first projection 64 and by not completely fixing the connector 17 with the second projection 65, the first projection 64 and the second projection 65
- the through hole 36 is provided with a play to prevent the connector 17 from floating even when the position is displaced.
- the outer diameters of the ribs 64a and 65b are set so that the press-fitting load when the ribs 64a and 65b are press-fitted is lower than the insertion load of the press-fit terminal 25. As shown in FIG.
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Abstract
Description
開口部を持つ容器の内部に接続端子が収容されたハウジングと、ハウジングの開口部と異なる側に設けられた位置決め用ガイド部と、接続端子から延出されたプレスフィット端子と、を有するコネクタ、
位置決め用ガイド部に嵌合されたガイド受け部と、プレスフィット端子が貫通する開口と、を有しハウジングが固定されたヒートシンク、
基板位置決め用ガイド部と、プレスフィット端子が圧着されたスルーホールとを有し、ヒートシンクにおけるハウジングが固定された面と反対側の面に固定された回路基板、を備えたものである。
プレスフィット端子が挿入されるスルーホール、基板位置決め用貫通孔、を有する回路基板が、基板位置決め用貫通孔と同心で基板位置決め用貫通孔の内径よりも小さい内径の貫通孔、プレスフィット端子を貫通させる開口、を有するヒートシンクの表側面に固定される第一のステップと、
開口部を持つ容器の内部に接続端子が収容されたハウジング、ハウジングから開口部と異なる側に延出された位置決め用突起部、接続端子から位置決め用突起部と平行に延出されたプレスフィット端子、を有するコネクタが、位置決め用突起部が貫通孔に嵌合され、プレスフィット端子がスルーホールに圧着されて、ヒートシンクの裏側面に固定される第二のステップと、を有するものである。
<回転電機装置>
以下、本願の実施の形態1に係る回路接続装置2および回転電機装置100について、図面を参照して説明する。図1は、回転電機装置100の構成を示す断面図である。図1は、回転電機装置100が備えた回転電機1のロータ5の回転軸4に沿った断面を示す。
回転電機1の構成について説明する。回転電機1は、円筒形状のケース3に内蔵された回転軸4と、回転軸4に固定されたロータ5と、ロータ5の外周面に対してエアギャップを介して対向する内周面を有するステータ6を備えている。ステータ6は、電機子巻線7が巻装され、ケース3の内面に圧入固定されている。図1では、回転軸4の出力側を下側に、非出力側を上側に記載している。
次に、回路接続装置2の構成について説明する。図2は実施の形態1に係る回路接続装置2の斜視図である。回路接続装置2は外層をカバー15で覆われている(図2は、カバー15を取り外した状態を示す)。回路接続装置2は、ヒートシンク10と、ヒートシンク10の両面に取り付けられたコネクタ17と、回路基板11から構成されている。コネクタ17は、ヒートシンク10のコネクタ取付面10aに取り付けられている。回路基板11は、ヒートシンク10の回路基板取付面10bに取り付けられている。なお、図2ではコネクタ17のコネクタ挿抜側面17bが出力側を向いている例を示したが、コネクタ挿抜側面17bが反出力側となるように構成することも可能である。
図3は実施の形態1に係る回路接続装置2の回路基板11を基板ヒートシンク取付面11aから見た斜視図である。回路基板11は印刷配線基板とも称される。回路基板11には、センサロータ14と同軸上にギャップを介して回転センサ20が配置されている。回転センサ20は、回転軸4の回転とともに回転するセンサロータ14の永久磁石からの磁界の変化を検出して電気信号に変換する。なお、回転センサ20は、磁気センサであるとして説明したが、レゾルバ、ホールセンサ、光学センサ等を用いてもよい。
図4は実施の形態1に係る回路接続装置2のコネクタ17のヒートシンク取付面17aの側から見た斜視図である。図5は実施の形態1に係る回路接続装置2のコネクタ17のコネクタ挿抜側面17bから見た斜視図である。コネクタ17は、外部電源(バッテリ)と接続する電源端子29を収容する電源側ハウジング16aとセンサ類と接続する信号端子30を収容する信号側ハウジング16bを備えている。電源側ハウジング16aと信号側ハウジング16bを含んでハウジング16と総称する。ハウジング16は、開口部を有した容器形状であり、接続端子を収容する。ここでは、ハウジング16が二つの部分に別れた例を示したが、全体で単一の容器形状でもよい。また、三つ以上の容器形状に別れていてもよい。接続端子は、すべて同じ形状の端子でもよいし、三種類以上の形状の端子に別れていてもよい。
図6は、実施の形態1に係る回路接続装置2のヒートシンク10の回路基板取付面10bから見た斜視図である。ヒートシンク10の回路基板取付面10bに設けられた放熱部33には放熱グリス34が塗布される。これによって、回路基板11に実装されたスイッチング素子22、シャント抵抗23等の放熱が必要な発熱部品18が、放熱グリス34を介してヒートシンク10に放熱することが可能となる。
次に、回路接続装置2の組立手順について説明する。図7は実施の形態1に係る回路接続装置2の基板組付治具37の斜視図である。基板組付治具37の基板組付面37aにはヒートシンク10との位置を決めるための治具位置決め用突起部39と、回路基板11を加圧し、ヒートシンク10に塗布された放熱グリス34を押し広げるための柔軟な弾性材料で構成された加圧用突起部40が設けられている。
図8から12は、実施の形態1に係る回路接続装置2の第一から第五の組み立て図である。図8は、第一の組み立て図である。図8では、基板組付治具37を、図7とは天地を逆に設定し基板組付面37aを下側としている。下方から回路基板11の基板ヒートシンク非取付面11bを上側にして基板組付治具37に取り付ける。回路基板11の基板位置決め用貫通孔28に基板組付治具37の第一柱状部41を挿入する前の状態を示している。
以上のように構成された装置により得られる効果を説明する。回転電機装置100において、プレスフィット端子25とスルーホール26の中心位置がずれたままコネクタ17を組付けると端子の座屈による挿入不良、スルーホール26の損傷が発生するおそれがある。そのような場合には、回路基板11の電気的絶縁性が低下して配線パターン、端子間で短絡が生じる懸念がある。
実施の形態2について図に基づいて説明する。実施の形態2に係る回路接続装置2は、実施の形態1の変形例であり、プレスフィット端子25とスルーホール26の位置決め精度のさらなる向上を目的としている。本実施の形態では、基板組付治具37の先端テーパ部44を、ヒートシンク10のコネクタ取付面10aに当接させて設けた案内治具47の凹部48に押し当てる構成について説明する。
実施の形態3について図に基づいて説明する。実施の形態3に係る回路接続装置2は、実施の形態1の変形例であり、プレスフィット端子25とスルーホール26の位置決め精度の向上に加え、組立て時の回路基板11への負荷を低減することを目的としている。本実施の形態では、基板組付治具137の円筒状の可動突起53が軸方向に移動する構成について説明する。
実施の形態4について、図に基づいて説明する。実施の形態4に係る回路接続装置2は、実施の形態1から3の変形例であり、プレスフィット端子25とスルーホール26の位置決め精度のさらなる向上を目的としている。実施の形態4に係る回路接続装置2では、コネクタ17の突起部に圧入固定用リブを設けたことを特徴とする。
Claims (19)
- 開口部を持つ容器の内部に接続端子が収容されたハウジングと、前記ハウジングの前記開口部と異なる側に設けられた位置決め用ガイド部と、前記接続端子から延出されたプレスフィット端子と、を有するコネクタ、
前記位置決め用ガイド部に嵌合されたガイド受け部と、前記プレスフィット端子が貫通する開口と、を有し前記ハウジングが固定されたヒートシンク、
基板位置決め用ガイド部と、前記プレスフィット端子が圧着されたスルーホールとを有し、前記ヒートシンクにおける前記ハウジングが固定された面と反対側の面に固定された回路基板、を備えた回路接続装置。 - 前記コネクタは、前記位置決め用ガイド部が突起部であり、前記プレスフィット端子は前記突起部と平行に延出され、
前記ヒートシンクは、前記ガイド受け部が貫通孔であり、
前記回路基板は、前記基板位置決め用ガイド部が前記貫通孔と同心の基板貫通孔である請求項1に記載の回路接続装置。 - 前記回路基板の前記基板貫通孔の径は、前記ヒートシンクの前記貫通孔の径よりも大きい請求項2に記載の回路接続装置。
- 前記コネクタは、前記突起部の先端から前記ヒートシンクの前記ハウジングが固定された面までの長さが、前記プレスフィット端子の先端から前記回路基板の前記ヒートシンクに固定された面までの長さよりも長い請求項2または3に記載の回路接続装置。
- 前記ヒートシンクは、前記貫通孔の前記ハウジングが固定された面の側に前記貫通孔の径よりも大きい径の段付き孔を有する請求項2から4のいずれか一項に記載の回路接続装置。
- 前記ヒートシンクは、前記貫通孔の前記ハウジングが固定された面と反対側の面の側に前記貫通孔の径よりも大きい径の段付き孔を有する請求項2から4のいずれか一項に記載の回路接続装置。
- 前記コネクタは、前記プレスフィット端子を挟んでその両側に前記位置決め用ガイド部が設けられた請求項1から6のいずれか一項に記載の回路接続装置。
- 前記コネクタは、円柱状の柱状部と前記柱状部の軸に平行に四本のリブとが設けられた第一の位置決め用突起部と、前記柱状部と前記柱状部の軸に平行に二本の前記リブとが設けられた第二の位置決め用突起部を有する請求項1から7のいずれか一項に記載の回路接続装置。
- 前記コネクタは、前記柱状部と前記リブが、前記位置決め用突起部の先端に近づくに従って径が減少する請求項8に記載の回路接続装置。
- 前記回路基板は、前記ヒートシンクにねじ止めされた請求項1から9のいずれか一項に記載の回路接続装置。
- 前記コネクタは、前記ヒートシンクにねじ止めされた請求項1から10のいずれか一項に記載の回路接続装置。
- 請求項1から11のいずれか一項に記載の回路接続装置を備えた回転電機装置。
- プレスフィット端子が挿入されるスルーホール、基板位置決め用貫通孔、を有する回路基板が、前記基板位置決め用貫通孔と同心で前記基板位置決め用貫通孔の内径よりも小さい内径の貫通孔、前記プレスフィット端子を貫通させる開口、を有するヒートシンクの表側面に固定される第一のステップと、
開口部を持つ容器の内部に接続端子が収容されたハウジング、前記ハウジングから前記開口部と異なる側に延出された位置決め用突起部、前記接続端子から前記位置決め用突起部と平行に延出された前記プレスフィット端子、を有するコネクタが、前記位置決め用突起部が前記貫通孔に嵌合され、前記プレスフィット端子が前記スルーホールに圧着されて、前記ヒートシンクの裏側面に固定される第二のステップと、を有する回路接続装置の製造方法。 - 前記第一のステップにおいて、前記回路基板の側から前記基板位置決め用貫通孔に挿入される治具位置決め突起部を有する基板組み付け治具を用いて前記回路基板と前記ヒートシンクの位置を調整する請求項13に記載の回路接続装置の製造方法。
- 前記第一のステップにおいて、前記回路基板の側から前記回路基板の前記基板位置決め用貫通孔に挿入される治具位置決め突起部を有する基板組み付け治具を用いて前記回路基板の位置を調整し、前記ヒートシンクの前記裏側面から前記貫通孔に挿入される案内突起を有する案内治具を用いて前記ヒートシンクの位置を調整する請求項13に記載の回路接続装置の製造方法
- 前記治具位置決め突起部は、先端部と中間部にテーパが設けられ、前記先端部のテーパで前記基板組み付け治具と前記ヒートシンクの位置が調整され、前記中間部のテーパで前記基板組み付け治具と前記回路基板の位置が調整される請求項14または15に記載の回路接続装置の製造方法。
- 前記治具位置決め突起部は、先端部と中間部にテーパが設けられ、前記先端部のテーパと前記貫通孔の縁部で前記基板組み付け治具と前記ヒートシンクの位置が調整され、前記中間部のテーパと前期基板位置決め用貫通孔の縁部で前記基板組み付け治具と前記回路基板の位置が調整される請求項14に記載の回路接続装置の製造方法。
- 前記治具位置決め突起部は、先端部と中間部にテーパが設けられ、前記先端部のテーパと前記案内突起に設けられた凹部の縁部で前記基板組み付け治具と前記ヒートシンクの位置が調整され、前記中間部のテーパと前記回路基板に設けた基板位置決め用貫通孔の縁部で前記基板組み付け治具と前記回路基板の位置が調整される請求項15に記載の回路接続装置の製造方法。
- 前記治具位置決め突起部が軸方向に移動することによって、前記回路基板と前記ヒートシンクの位置が調整される請求項14から18のいずれか一項に記載の回路接続装置の製造方法。
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