WO2023007598A1 - 回路接続装置、回転電機装置、及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、及び回路接続装置の製造方法 Download PDFInfo
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- WO2023007598A1 WO2023007598A1 PCT/JP2021/027826 JP2021027826W WO2023007598A1 WO 2023007598 A1 WO2023007598 A1 WO 2023007598A1 JP 2021027826 W JP2021027826 W JP 2021027826W WO 2023007598 A1 WO2023007598 A1 WO 2023007598A1
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- terminal
- press
- positioning
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- heat sink
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- 238000004519 manufacturing process Methods 0.000 title claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 10
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- 238000003780 insertion Methods 0.000 description 14
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- 238000010586 diagram Methods 0.000 description 7
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- 238000009499 grossing Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000005476 soldering Methods 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
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- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 230000005855 radiation Effects 0.000 description 1
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- 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
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/325—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor
-
- 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
-
- 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
- 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
-
- 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
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/10—Connectors or connections adapted for particular applications for dynamoelectric machines
-
- 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
- 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
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
-
- 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
- H05K2201/06—Thermal details
- H05K2201/066—Heatsink mounted on the surface of the printed circuit board [PCB]
-
- 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
- H05K2201/10007—Types of components
- H05K2201/10189—Non-printed connector
-
- 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
- H05K2201/10295—Metallic connector elements partly mounted in a hole of the PCB
- H05K2201/10303—Pin-in-hole mounted 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
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10371—Shields or metal cases
-
- 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
- H05K2201/10431—Details of mounted components
- H05K2201/1059—Connections made by press-fit insertion
-
- 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
- H05K2201/10787—Leads having protrusions, e.g. for retention or insert stop
-
- 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
- H05K2201/10878—Means for retention of a lead in a hole
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/16—Inspection; Monitoring; Aligning
- H05K2203/167—Using mechanical means for positioning, alignment or registration, e.g. using rod-in-hole alignment
-
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/306—Lead-in-hole components, e.g. affixing or retention before soldering, spacing means
-
- 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
- H05K3/4038—Through-connections; Vertical interconnect access [VIA] connections
- H05K3/4046—Through-connections; Vertical interconnect access [VIA] connections using auxiliary conductive elements, e.g. metallic spheres, eyelets, pieces of wire
Definitions
- the present disclosure relates to a circuit connection device, a rotating electric machine device, and a method of manufacturing a circuit connection device.
- a circuit connection device having a circuit board and a connector is used as a control unit for a rotating electric machine.
- a press-fit terminal is sometimes used for connection between a circuit board and a connector. By press-fitting the press-fit terminals of the connector into the terminal through-holes of the circuit board, electrical connection between the circuit board and the connector can be ensured without soldering or the like.
- a heat sink is sometimes provided for cooling electronic components mounted on a circuit board. When the heat sink is provided between the circuit board and the connector, it is difficult to insert the press-fit terminals into the terminal through-holes because the circuit board and the connector are separated from each other.
- the diameter of the opening of the guide through-hole is increased, it is necessary to increase the arrangement interval of the guide through-holes, and the arrangement interval of the press-fit terminals and the terminal through-holes is also increased.
- the inclination angle of the insertion guide hole is reduced, the thickness of the terminal alignment member must be increased in order to form the terminal through hole of a desired size. As a result, the size of the circuit connecting device is increased.
- the present disclosure has been made in order to solve the above problems, and provides a circuit connection device, a rotating electric machine device, and a method of manufacturing the circuit connection device that can improve assembly while achieving miniaturization. intended to
- a circuit connecting device includes a connector having a connection terminal connected to the outside and a press-fit terminal connected to the connection terminal, and a terminal through hole into which the press-fit terminal is press-fitted.
- a circuit board disposed between the connector and the circuit board and fixed to the circuit board, and a terminal guide having a guide through hole for guiding the press-fit terminal toward the terminal through hole.
- a terminal alignment member having a portion; a first surface on which the circuit board is fixed; a second surface opposite to the first surface, on which the connector is fixed; a heat sink having an opening penetrating through to the terminal guide portion and accommodating the terminal guide portion therein, wherein one of the connector and the heat sink is formed with a first positioning protrusion, and the connector and the heat sink A first positioning recess to be fitted with the first positioning projection is formed on the other, and a second positioning projection is formed on one of the circuit board and the terminal alignment member, The other of the circuit board and the terminal aligning member is formed with a second positioning recess to be fitted with the second positioning protrusion, and one of the heat sink and the terminal aligning member is formed with a third positioning recess. Positioning protrusions are formed, and the other of the heat sink and the terminal alignment member is formed with a third positioning recess that is fitted with the third positioning protrusion.
- a rotating electrical machine device includes a rotating electrical machine and the circuit connection device that controls the rotating electrical machine.
- a method for manufacturing a circuit connection device includes a connector having a connection terminal to be connected to the outside and a press-fit terminal to be connected to the connection terminal; and a terminal through hole into which the press-fit terminal is press-fitted. and a guide through hole disposed between the connector and the circuit board and fixed to the circuit board to guide the press-fit terminal toward the terminal through hole.
- a terminal aligning member having a terminal guide portion, a first surface on which the circuit board is fixed, and a second surface opposite to the first surface, on which the connector is fixed; a heat sink that penetrates to a second surface and has an opening that accommodates the terminal guide portion therein; one of the connector and the heat sink is formed with a first positioning protrusion; The other of the heat sinks is formed with a first positioning recess to be fitted with the first positioning projection, and one of the circuit board and the terminal alignment member is formed with a second positioning projection.
- a second positioning recess to be fitted with the second positioning protrusion is formed on the other of the circuit board and the terminal alignment member, and one of the heat sink and the terminal alignment member has a , a third positioning projection is formed, and the other of the heat sink and the terminal aligning member is formed with a third positioning recess to be fitted with the third positioning projection.
- a manufacturing method comprising: a first step of fitting the second positioning protrusion into the second positioning recess to fix the terminal alignment member to the circuit board; a second step of fitting the third positioning recess, accommodating the terminal guide portion in the opening, and fixing the terminal alignment member to the heat sink; and a third step of fixing the connector to the heat sink by fitting the first positioning recess, inserting the press-fit terminal into the guide through-hole and press-fitting it into the terminal through-hole.
- circuit connection device a rotating electric machine device, and a method of manufacturing a circuit connection device that can improve assembly while achieving miniaturization.
- FIG. 1 is a schematic 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 connector according to Embodiment 1;
- FIG. 1 is a perspective view of a connector according to Embodiment 1;
- FIG. 1 is a perspective view of a circuit board according to Embodiment 1;
- FIG. 3 is a perspective view of a terminal alignment member according to Embodiment 1;
- FIG. 3 is a perspective view of a terminal alignment member according to Embodiment 1;
- FIG. 1 is a perspective view of a heat sink according to Embodiment 1;
- FIG. 4 is a diagram for explaining the first step of the method for manufacturing the circuit connecting device according to Embodiment 1;
- FIG. 8 is a diagram illustrating a second step of the method for manufacturing the circuit connecting device according to the first embodiment;
- FIG. 10 is a diagram illustrating the third step of the method for manufacturing the circuit connecting device according to the first embodiment;
- FIG. 10 is a diagram illustrating the third step of the method for manufacturing the circuit connecting device according to the first embodiment;
- FIG. 8 is a perspective view of a connector according to Embodiment 2;
- FIG. 5 is a schematic cross-sectional view of a circuit connecting device according to Embodiment 2;
- FIG. 11 is a perspective view of a connector according to Embodiment 3;
- FIG. 11 is a schematic cross-sectional view of a circuit connecting device according to Embodiment 3;
- FIG. 11 is a perspective view of a connector according to Embodiment 4;
- FIG. 12 is a top view of a connector according to Embodiment 4;
- FIG. 1 is a schematic cross-sectional view of a rotating electric machine device A.
- FIG. A rotating electrical machine device A includes a multiphase winding type rotating electrical machine 1 and a circuit connection device 2 that controls the rotating electrical machine 1 .
- the rotary electric machine 1 includes a rotating shaft 11, a rotor 12, a stator 13, a case 14, a lid portion 15, windings 16, an annular wiring portion 17, wiring terminals 18, and first and second bearings. 19a and 19b.
- FIG. 1 is a cross-sectional view of a rotating electric machine device A along a rotating shaft 11. As shown in FIG. In FIG. 1 , the lower side of the paper surface is the output side of the rotating shaft 11 , and the upper side of the paper surface is the non-output side of the rotating shaft 11 .
- the rotating shaft 11 extends along the axis.
- the rotor 12 is fixed to the rotating shaft 11 .
- a plurality of pairs of permanent magnets (not shown) are arranged on the outer peripheral surface of the rotor 12 . These permanent magnets constitute the field poles.
- the stator 13 is provided so as to surround the outer circumference of the rotor 12 .
- Stator 13 is fixed to the inner surface of case 14 .
- An air gap is formed between the outer peripheral surface of the rotor 12 and the inner peripheral surface of the stator 13 .
- the air gap is formed over the entire circumference in the circumferential direction around the axis of the rotating shaft 11 .
- the case 14 has a cylindrical shape. Case 14 accommodates rotating shaft 11 , rotor 12 , and stator 13 .
- the lid portion 15 covers the lower end of the case 14 .
- the upper end of the case 14 is covered with the heat sink 5 of the circuit connecting device 2, which will be described later.
- a winding 16 is wound around the stator 13 .
- Winding 16 includes a U-phase winding, a V-phase winding, and a W-phase winding.
- the annular wiring portion 17 is arranged on the non-output side of the rotating shaft 11 with respect to the winding 16 (that is, on the upper side in FIG. 1).
- the annular wiring portion 17 is connected to the end portion of the winding 16 by TIG welding or the like.
- the wiring terminal 18 is connected to the annular wiring portion 17 .
- the wiring terminal 18 extends from the annular wiring portion 17 through the heat sink 5 to the non-output side of the rotating shaft 11 .
- the wiring terminal 18 is electrically connected to the end of the winding 16 via the annular wiring portion 17 .
- the wiring terminal 18 is composed of three conductors. These three conductors are respectively connected to the wiring terminal of the U-phase winding, the wiring terminal of the V-phase winding, and the wiring terminal of the W-phase winding of the winding 16 .
- the wiring terminals 18 are connected to the circuit board 3 of the circuit connection device 2 to be described later by soldering or the like.
- the power terminal 41 and the signal terminal 42 protrude from the second surface 4 b of the body portion 40 .
- the power terminal 41 is connected to an external power source (battery).
- the signal terminal 42 is connected to an external sensor or the like. As shown in FIG. 1 , the power terminal 41 and the signal terminal 42 extend toward the output side of the rotating shaft 11 .
- the power terminal 41 and the signal terminal 42 have different shapes, but the power terminal 41 and the signal terminal 42 may have the same shape. Terminals having three or more shapes may be used as the power supply terminal 41 and the signal terminal 42 .
- the power terminal 41 and the signal terminal 42 extend toward the output side of the rotating shaft 11 , they may extend toward the non-output side of the rotating shaft 11 .
- the power supply side housing 43 is provided on the second surface 4 b of the main body portion 40 .
- the power supply side housing 43 is a container having an opening and accommodates the power supply terminals 41 therein.
- the power supply side housing 43 is formed integrally with the main body portion 40 .
- the signal-side housing 44 is provided on the second surface 4 b of the body portion 40 .
- the signal-side housing 44 is a container having an opening and accommodates the signal terminals 42 therein.
- the signal-side housing 44 is formed integrally with the body portion 40 .
- the power supply side housing 43 and the signal side housing 44 are separate containers, but the power supply side housing 43 and the signal side housing 44 may be formed as a single container.
- the power supply side housing 43 and the signal side housing 44 may be formed of three or more containers. That is, the power terminal 41 and the signal terminal 42 may be housed in a single container, or may be divided and housed in three or more containers.
- a plurality of press-fit terminals 45 are provided corresponding to each of the power terminals 41 and the signal terminals 42 .
- the press-fit terminals 45 are connected to the corresponding power terminals 41 or signal terminals 42 .
- the press-fit terminals 45 extend from the corresponding power terminals 41 or signal terminals 42 and protrude from the first surface 4 a of the body portion 40 .
- press-fit terminals 45 extend toward circuit board 3 .
- Press-fit terminal 45 extends toward the non-output side of rotating shaft 11 .
- the press-fit terminals 45 extend in the direction opposite to the direction in which the power terminals 41 and the signal terminals 42 extend. It may extend in a direction perpendicular to the exit direction.
- the press-fit terminal 45 is formed in an elongated plate shape as a whole.
- a press-fit portion 45 a is formed at the tip of the press-fit terminal 45 .
- the width (maximum width) of the press-fit portion 45 a is larger than the width of other portions of the press-fit terminal 45 .
- a hole is formed in the press-fit portion 45a so that the press-fit portion 45a can be elastically deformed.
- FIG. 5 is a perspective view of the circuit board 3.
- the circuit board 3 has a first surface 3a and a second surface 3b.
- the first surface 3a is the upper surface of the circuit board 3 (the output side of the rotating shaft 11)
- the second surface 3b is the lower surface of the circuit board 3 (the non-output side of the rotating shaft 11).
- 5 is a view of the circuit board 3 viewed from the second surface 3b side.
- the rotation sensor 31 is a magnetic sensor. As shown in FIG. 1 , the rotation sensor 31 is arranged coaxially with the sensor rotor 21 provided on the end surface of the rotating shaft 11 on the non-output side. The sensor rotor 21 and the rotation sensor 31 face each other with a gap therebetween. The rotation sensor 31 detects changes in the magnetic field from the permanent magnets of the sensor rotor 21 rotating together with the rotating shaft 11 and converts them into electric signals. The rotation state of the rotary shaft 11 is detected by the sensor rotor 21 and the rotation sensor 31 . As the rotation sensor 31, a resolver, Hall sensor, optical sensor, or the like may be used.
- a pair of circuit board side through holes 38 (second positioning recesses) are formed in the circuit board 3 .
- the circuit board side through hole 38 penetrates the circuit board 3 from the first surface 3a to the second surface 3b.
- a pair of circuit board side through holes 38 are provided so as to sandwich the plurality of terminal through holes 37 .
- FIGS. 6 and 7 are perspective views of the terminal alignment member 6.
- the terminal alignment member 6 includes a body portion 60 having a first surface 6a and a second surface 6b, a pair of second positioning protrusions 61, and a pair of third positioning protrusions 61.
- a protrusion 62 and a terminal guide portion 63 are provided.
- the first surface 6a is the surface on the upper side of the terminal alignment member 6 (the output side of the rotating shaft 11)
- the second surface 6b is the surface on the lower side of the terminal alignment member 6 (the non-output side of the rotating shaft 11).
- 6 is a view of the terminal alignment member 6 viewed from the first surface 6a side.
- FIG. 7 is a view of the terminal alignment member 6 viewed from the second surface 6b side.
- the terminal guide portion 63 is a box-shaped member.
- the terminal guide portion 63 is attached to the second surface 6 b of the body portion 60 .
- a surface of the terminal guide portion 63 opposite to the surface attached to the body portion 60 is referred to as a lower surface 6c.
- a plurality of guide through holes 64 are formed in the body portion 60 and the terminal guide portion 63 .
- the guide through hole 64 penetrates the main body portion 60 and the terminal guide portion 63 in the vertical direction. That is, the guide through hole 64 penetrates the main body portion 60 and the terminal guide portion 63 from the first surface 6a to the lower surface 6c.
- a plurality of guide through holes 64 are provided at positions corresponding to the plurality of terminal through holes 37 .
- the guide through hole 64 communicates with the terminal through hole 37 .
- the inner diameter of the guide through hole 64 is larger than the inner diameter of the terminal through hole 37 .
- the inner diameter of the guide through-hole 64 is larger than the width (maximum width) of the press-fit portion 45a.
- the guide through hole 64 guides the press-fit terminal 45 toward the terminal through hole 37 .
- An insertion guide hole 65 is provided at the end of the guide through hole 64 on the side of the lower surface 6c so that the diameter increases toward the open end on the connector 4 side (that is, toward the side of the lower surface 6c).
- the third positioning protrusion 62 protrudes from the second surface 6b of the body portion 60.
- the third positioning protrusion 62 is formed in a substantially cylindrical shape as a whole.
- a tapered surface is provided at the tip of the third positioning protrusion 62 . That is, the tip of the third positioning protrusion 62 is tapered toward the tip of the third positioning protrusion 62 .
- a pair of third positioning protrusions 62 are provided so as to sandwich the terminal guide portion 63 .
- FIG. 8 is a perspective view of the heat sink 5.
- the heat sink 5 includes a main body portion 50 having a first surface 5a and a second surface 5b, a heat radiating portion 51, a large component housing portion 53, a through hole 54 for a rotating shaft, and an opening portion. 55 and a pair of heat sink-side through holes 56 (first positioning recess and third positioning recess).
- the first surface 5a is the surface on the upper side of the heat sink 5 (on the output side of the rotating shaft 11).
- the second surface 5b is a surface on the lower side of the heat sink 5 (the non-output side of the rotating shaft 11).
- 8 is a view of the heat sink 5 viewed from the side of the first surface 5a.
- the heat radiating portion 51 is a concave portion provided on the first surface 5a of the body portion 50. As shown in FIG. The heat radiating portion 51 is provided at a position corresponding to the heat generating component 35 mounted on the circuit board 3 . Heat dissipation grease 52 (see FIG. 1) is applied to the heat dissipation portion 51 . When the circuit board 3 is attached to the heat sink 5 , the heat-generating components 35 are tightly covered with the heat-dissipating grease 52 . Thereby, the heat of the heat-generating component 35 is radiated to the heat sink 5 via the heat radiation grease 52 .
- the heat sink side through-hole 56 penetrates the main body 50 from the first surface 5a to the second surface 5b.
- a pair of heat sink side through holes 56 are provided so as to sandwich the opening 55 .
- the heat sink-side through-holes 56 are provided at positions corresponding to the first positioning projections 46 and the third positioning projections 62 .
- the heat sink side through-hole 56, the first positioning protrusion 46, and the third positioning protrusion 62 are coaxially arranged.
- the first positioning protrusion 46 is inserted into the heat sink-side through-hole 56 from the second surface 5b side, and the third positioning protrusion 62 is inserted from the first surface 5a side.
- the inner diameter of the heat sink-side through hole 56 is set so that the first positioning protrusion 46 and the third positioning protrusion 62 can be press-fitted into the heat sink-side through hole 56 .
- the height of the body portion 50 (that is, the length from the first surface 5a to the second surface 5b of the body portion 50) is equal to the length of the first positioning protrusion 46 (that is, the length of the first positioning protrusion 46). length of the portion protruding from the first surface 4a) and the length of the third positioning protrusion 62 (that is, the length of the portion of the third positioning protrusion 62 protruding from the second surface 6b) greater than the sum of Therefore, even when both the first positioning protrusion 46 and the third positioning protrusion 62 are inserted into the heat sink side through-hole 56, the first positioning protrusion 46 and the third positioning protrusion 46 and the third positioning protrusion 62 are inserted. 62 can be prevented from colliding with each other.
- FIG. 10 is a diagram explaining the second step.
- the heat sink 5 is arranged so that the first surface 5a faces upward.
- the circuit board 3 and the terminal alignment member 6 fixed to each other in the first step are turned upside down, and the circuit board 3 and the terminal alignment member 6 are separated from the first surface 5 a of the body portion 50 and the second surface of the circuit board 3 . It arrange
- the third positioning protrusion 62 of the terminal alignment member 6 is inserted into the heat sink side through hole 56 of the heat sink 5 . Since the tip portion of the third positioning protrusion 62 is tapered, the third positioning protrusion 62 can be smoothly inserted into the heat sink side through-hole 56 .
- the terminal guide portion 63 is inserted inside the opening portion 55 .
- a body portion 60 of the terminal alignment member 6 is sandwiched between the circuit board 3 and the heat sink 5 .
- the horizontal positions of the circuit board 3 and the terminal alignment member 6 with respect to the heat sink 5 are adjusted by inserting the third positioning protrusions 62 into the heat sink side through holes 56 .
- the horizontal positions of the heat radiating portion 51 (heat radiating grease 52) and the heat generating component 35 are aligned so that the heat radiating portion 51 (heat radiating grease 52) and the heat generating component 35 face each other.
- the large component housing portion 53 and the smoothing capacitor 36 are aligned in the horizontal direction so that the large component housing portion 53 and the smoothing capacitor 36 face each other.
- the rotary shaft through-hole 54 and the rotary sensor 31 are aligned in the horizontal direction, so that the positional deviation of the rotary sensor 31 can be suppressed, and the rotation state of the rotary shaft 11 can be detected with high accuracy.
- the third positioning protrusion 62 is press-fitted into the heat sink-side through-hole 56 and fixed.
- the heat dissipating grease 52 applied to the heat dissipating portion 51 of the heat sink 5 is spread, and the heat generating component 35 is closely adhered to and covered with the heat dissipating grease 52 . Since the heat dissipation grease 52 can be spread when the third positioning protrusion 62 is press-fitted, the assembly process can be simplified. Also, the smoothing capacitor 36 is arranged inside the large-sized component housing portion 53 .
- the rotation sensor 31 is arranged inside the rotary shaft through hole 54 .
- the circuit board 3 and the terminal alignment member 6 are fixed to the heat sink 5 by screwing.
- the fixing of the circuit board 3 and the terminal alignment member 6 to the heat sink 5 is not limited to screw tightening, and may be fixed by adhesive, fixed by welding, fixed by brazing, fixed by soldering, fixed by crimping, or the like. good.
- FIG. 11 and 12 are diagrams for explaining the third step.
- the circuit board 3, the terminal alignment member 6, and the heat sink 5, which were fixed together in the second step, are turned upside down, and the circuit board 3, the terminal alignment member 6, and the heat sink 5 are attached to the body portion 50.
- the connector 4 is arranged so that the second surface 5b of the body portion 50 and the first surface 4a of the body portion 40 face each other.
- the first positioning protrusion 46 of the connector 4 is inserted into the heat sink side through hole 56 of the heat sink 5 . Since the tip portion of the first positioning protrusion 46 is tapered, the first positioning protrusion 46 can be smoothly inserted into the heat sink-side through hole 56 .
- the horizontal position of the connector 4 with respect to the heat sink 5 , the circuit board 3 and the terminal alignment member 6 is adjusted by inserting the first positioning projections 46 into the heat sink side through holes 56 .
- the press-fit terminal 45, the terminal through-hole 37, and the guide through-hole 64 are aligned so that the center of the press-fit terminal 45, the center of the terminal through-hole 37, and the center of the guide through-hole 64 are aligned. are horizontally aligned.
- the connector 4 is further moved toward the heat sink 5 and the press-fit terminals 45 are inserted into the guide through holes 64 .
- the length in the extending direction of the press-fit terminal 45 from the tip of the first positioning protrusion 46 to the open end of the heat sink-side through-hole 56 on the connector 4 side is L1.
- L2 is the length in the extending direction of the press-fit terminal 45 from the tip of the press-fit terminal 45 to the open end of the guide through hole 64 on the connector 4 side
- the length L1 is longer than the length L2.
- the press-fit terminals 45 have not started to be inserted into the guide through-holes 64 at the stage when the first positioning projections 46 have started to be inserted into the heat sink-side through-holes 56 . That is, after the press-fit terminals 45 and the guide through-holes 64 are aligned in the horizontal direction by inserting the first positioning protrusions 46 into the heat sink-side through-holes 56, the press-fit terminals 45 are inserted into the guide through-holes. 64 can be inserted. Therefore, the press-fit terminal 45 can be reliably and smoothly inserted into the guide through-hole 64 . Further, since the insertion guide hole 65 is formed in the guide through hole 64 , the press-fit terminal 45 can be inserted into the guide through hole 64 more smoothly.
- the press-fit terminal 45 moves toward the circuit board 3 while being guided along the guide through-hole 64 and is inserted into the terminal through-hole 37 .
- the connector 4 is fixed to the heat sink 5 by screwing.
- the fixing between the connector 4 and the heat sink 5 is not limited to screwing, but may be fixing by adhesive, fixing by welding, fixing by brazing, fixing by soldering, crimping, or the like.
- the connector 4 includes the power terminal 41 and the signal terminal 42 connected to the outside, and the press-fit terminal connected to the power terminal 41 and the signal terminal 42. 45 and .
- a terminal through-hole 37 into which a press-fit terminal 45 is press-fitted is formed in the circuit board 3 .
- a terminal alignment member 6 is disposed between the connector 4 and the circuit board 3 and fixed to the circuit board 3 .
- the terminal alignment member 6 has a terminal guide portion 63 formed with a guide through hole 64 for guiding the press-fit terminal 45 toward the terminal through hole 37 .
- the circuit board 3 is fixed to the first surface 5a of the heat sink 5, and the connector 4 is fixed to the second surface 5b opposite to the first surface 5a.
- the heat sink 5 has an opening 55 penetrating from the first surface 5a to the second surface 5b and accommodating the terminal guide portion 63 therein.
- the connector 4 is formed with a first positioning protrusion 46
- the heat sink 5 is formed with a heat sink-side through hole 56 into which the first positioning protrusion 46 is fitted.
- a second positioning protrusion 61 is formed in the terminal alignment member 6
- a circuit board side through hole 38 is formed in the circuit board 3 to be fitted with the second positioning protrusion 61 .
- a third positioning protrusion 62 is formed in the terminal alignment member 6
- a heat sink-side through hole 56 is formed in the heat sink 5 into which the third positioning protrusion 62 is fitted.
- the method of manufacturing the circuit connecting device 2 includes the first positioning projection 61 for fitting the second positioning protrusion 61 into the circuit board side through hole 38 and fixing the terminal alignment member 6 to the circuit board 3 . and a second step of fitting the third positioning protrusion 62 into the heat sink side through hole 56 , housing the terminal guide portion 63 inside the opening 55 , and fixing the terminal alignment member 6 to the heat sink 5 .
- the connector 4 is fixed to the heat sink 5 by fitting the first positioning projections 46 into the heat sink side through holes 56, inserting the press-fit terminals 45 into the guide through holes 64 and press-fitting them into the terminal through holes 37. and a third step.
- the press-fit terminal 45 Since the press-fit terminal 45 is guided toward the terminal through-hole 37 by the guide through-hole 64 , the press-fit terminal 45 can be reliably inserted into the terminal through-hole 37 . Further, since the terminal guide portion 63 in which the guide through hole 64 is formed is arranged inside the opening portion 55 formed in the heat sink 5, even if the terminal alignment member 6 is provided, the circuit connecting device 2 can be prevented from becoming large. can do. Also, the first positioning protrusion 46 and the heat sink side through hole 56 are fitted, the second positioning protrusion 61 and the circuit board side through hole 38 are fitted, and the third positioning protrusion 62 and the heat sink are fitted. The side through hole 56 is fitted.
- the relative positions of the circuit board 3, the connector 4, the heat sink 5, and the terminal alignment member 6 can be adjusted. Therefore, the circuit board 3, the connector 4, the heat sink 5, and the terminal alignment member 6 can be assembled easily and accurately. Furthermore, in the conventional terminal alignment member, it is necessary to increase the diameter of the opening of the guide through-hole, for example, in order to prevent the press-fit terminal from colliding with the guide through-hole due to the relative positional deviation between the connector and the circuit board. rice field.
- the relative positions of the circuit board 3, the connector 4, the heat sink 5, and the terminal alignment member 6 are adjusted, and the positions of the press-fit terminals 45 and the guide through holes 64 are aligned.
- the press-fit terminal 45 can be inserted into the guide through-hole 64 in this state.
- the press-fit terminal 45 can be reliably inserted into the guide through-hole 64 without increasing the size of the guide through-hole 64, and the circuit connecting device 2 can be prevented from increasing in size.
- the assemblability can be improved while achieving the miniaturization.
- FIG. 13 is a perspective view of connector 104 according to the second embodiment.
- FIG. 14 is a schematic cross-sectional view of the circuit connecting device 2 according to the second embodiment.
- a connector 104 according to Embodiment 2 has a plurality of press-fit terminals 145 instead of the plurality of press-fit terminals 45 .
- the press-fit terminal 145 includes a press-fit portion 45a and a position restricting portion 145b.
- the position restricting portion 145b is formed closer to the proximal side than the press fit portion 45a.
- the width (maximum width) of the position restricting portion 145b is greater than the width (maximum width) of the press-fit portion 45a.
- the width (maximum width) of the position restricting portion 145 b is slightly smaller than the inner diameter of the guide through hole 64 .
- a tapered portion 145c whose width decreases toward the tip of the press-fit terminal 145 is provided at the tip of the position restricting portion 145b. That is, the distal end of the position restricting portion 145 b is tapered toward the distal end of the press-fit terminal 145 .
- the inclination angle of the tapered portion 145c with respect to the tip end surface of the position restricting portion 145b is, for example, in the range of 10° to 45°.
- the method of manufacturing the circuit connection device 2 according to the second embodiment includes the first step of attaching the terminal alignment member 6 to the circuit board 3, and attaching the circuit board 3 and the terminal alignment member 6 to the heat sink 5. and a third step of attaching the connector 104 to the heat sink 5 . Since the first step and the second step are the same as those in the first embodiment, description thereof is omitted here.
- the circuit board 3, the terminal alignment member 6, and the heat sink 5, which were fixed together in the second step, are turned upside down, and the circuit board 3, the terminal alignment member 6, and the heat sink 5 are attached to the body portion 50. It arrange
- the connector 104 is arranged so that the second surface 5b of the body portion 50 and the first surface 4a of the body portion 40 face each other.
- the first positioning protrusion 46 of the connector 104 is inserted through the heat sink side through hole 56 of the heat sink 5 .
- the horizontal position of the connector 104 with respect to the heat sink 5 , the circuit board 3 and the terminal alignment member 6 is adjusted by inserting the first positioning protrusion 46 into the heat sink side through hole 56 .
- the press-fit terminal 145, the terminal through-hole 37, and the guide through-hole 64 are aligned so that the center of the press-fit terminal 145, the center of the terminal through-hole 37, and the center of the guide through-hole 64 are aligned. are horizontally aligned.
- the connector 4 is further moved to the heat sink 5 side, and the press-fit terminals 145 are inserted into the guide through-holes 64 .
- the position regulating portion 145 b of the press-fit terminal 145 is inserted into the guide through hole 64 and the position regulating portion 145 b contacts the guide through hole 64 . Since the tapered portion 145c is formed in the position regulating portion 145b and the insertion guide hole 65 is formed in the guide through hole 64, even the wide position regulating portion 145b can be smoothly inserted into the guide through hole 64. can be inserted.
- the horizontal movement of the press-fit terminal 145 is restricted by the contact of the position restricting portion 145b with the guide through-hole 64.
- the press-fit terminal 145 can be more reliably guided toward the terminal through-hole 37 , and the press-fit terminal 145 (press-fit portion 45 a ) can be reliably and smoothly inserted into the terminal through-hole 37 .
- a load is applied to the connector 104 in a direction orthogonal to the second surface 4 b of the connector 104 to push the connector 104 into the heat sink 5 .
- the press-fit terminal 145 is press-fitted into the terminal through-hole 37 and fixed.
- the first positioning protrusion 46 is press-fitted into the heat sink-side through-hole 56 and fixed.
- the connector 104 is fixed to the heat sink 5 by screwing while the connector 104 is pressed against the heat sink 5 .
- the press-fit terminal 145 includes the press-fit portion 45a that is press-fitted into the terminal through-hole 37, and is wider than the press-fit portion 45a. and a position restricting portion 145 b that abuts on the through hole 64 .
- the contact of the position restricting portion 145b with the guide through-hole 64 restricts the movement of the press-fit terminal 145 and guides the press-fit terminal 145 toward the terminal through-hole 37 more reliably. Therefore, the press-fit terminal 145 can be reliably and smoothly inserted into the terminal through-hole 37 .
- the tips of the press-fit terminals 145 can be prevented from colliding with the guide through-holes 64 and the terminal through-holes 37, and buckling of the press-fit terminals 145 can be prevented more reliably.
- Embodiment 3 A circuit connection device 2 according to Embodiment 3 will be described below with reference to the drawings. Components having the same functions and actions as those of the first embodiment are given the same reference numerals, and descriptions thereof are omitted.
- FIG. 15 is a perspective view of connector 204 according to the third embodiment.
- FIG. 16 is a schematic cross-sectional view of the circuit connecting device 2 according to the third embodiment.
- a connector 204 according to Embodiment 3 has a plurality of press-fit terminals 245 instead of the plurality of press-fit terminals 45 .
- Terminal alignment member 206 according to the third embodiment has guide through-holes 264 instead of guide through-holes 64 .
- the press-fit terminal 245 includes a press-fit portion 45a, a first position regulating portion 245c, a stress relaxation portion 245d, and a second position regulating portion 245e.
- the press-fit portion 45a, the first position regulating portion 245c, the stress relaxation portion 245d, and the second position regulating portion 245e are provided in this order from the distal end of the press-fit terminal 245 toward the proximal end.
- a tapered portion whose width decreases toward the distal end of the press-fit terminal 245 is provided at the distal end of the first position restricting portion 245c.
- a tapered portion whose width decreases toward the distal end of the press-fit terminal 245 is provided at the distal end of the second position regulating portion 245e. That is, the tip of the first position regulating portion 245 c and the tip of the second position regulating portion 245 e are tapered toward the tip of the press-fit terminal 245 .
- the width (maximum width) of the first position regulating portion 245c and the width (maximum width) of the second position regulating portion 245e are larger than the width (maximum width) of the press-fit portion 45a.
- the width of the first position restricting portion 245c and the width of the second position restricting portion 245e are the same.
- the width of the stress relaxation portion 245d is smaller than the width of the first position regulating portion 245c and the width of the second position regulating portion 245e.
- the guide through hole 264 has a contact portion 264a and an enlarged diameter portion 264b.
- the contact portion 264a is provided on the lower surface 6c side of the guide through-hole 264.
- the inner diameter of the contact portion 264a is slightly larger than the width (maximum width) of the first position regulating portion 245c and the width (maximum width) of the second position regulating portion 245e.
- the inner diameter of the expanded diameter portion 264b is larger than the inner diameter of the contact portion 264a.
- the inner diameter of the expanded diameter portion 264b is larger than the inner diameter of the terminal through-hole 37 .
- the inner diameter of the expanded diameter portion 264b is larger than the width of the first position regulating portion 245c and the width of the second position regulating portion 245e.
- the method of manufacturing the circuit connection device 2 according to the third embodiment includes the first step of attaching the terminal alignment member 206 to the circuit board 3, and attaching the circuit board 3 and the terminal alignment member 206 to the heat sink 5. and a third step of attaching the connector 204 to the heat sink 5 . Since the first step and the second step are the same as those in the first embodiment, description thereof is omitted here.
- the circuit board 3, the terminal alignment member 206, and the heat sink 5 fixed together in the second step are turned upside down, and the circuit board 3, the terminal alignment member 206, and the heat sink 5 are attached to the main body 50. It arrange
- the connector 204 is arranged so that the second surface 5b of the body portion 50 and the first surface 4a of the body portion 40 face each other.
- the first positioning protrusion 46 of the connector 204 is inserted into the heat sink side through hole 56 of the heat sink 5 .
- the horizontal position of the connector 204 with respect to the heat sink 5 , the circuit board 3 and the terminal alignment member 206 is adjusted by inserting the first positioning protrusion 46 into the heat sink side through hole 56 .
- the connector 204 is further moved toward the heat sink 5 and the press-fit terminals 245 are inserted into the guide through holes 264 .
- the press-fit terminal 245 is inserted, first, the first position restricting portion 245c of the press-fit terminal 245 comes into contact with the contact portion 264a, thereby restricting the press-fit terminal 245 from moving in the horizontal direction.
- the second position restricting portion 245e contacts the contact portion 264a, and the first position restricting portion 245c is arranged inside the enlarged diameter portion 264b.
- a load is applied to the connector 204 in a direction orthogonal to the second surface 4 b of the connector 204 to push the connector 204 into the heat sink 5 .
- the press-fit terminal 245 is press-fitted into the terminal through-hole 37 and fixed.
- stress generated when the press-fit terminal 245 is press-fitted into the terminal through-hole 37 can be relieved by the stress relaxation portion 245d.
- the first positioning protrusion 46 is press-fitted into the heat sink-side through-hole 56 and fixed. After that, the connector 204 is fixed to the heat sink 5 by screwing while the connector 204 is pressed against the heat sink 5 .
- the press-fit terminal 245 includes the press-fit portion 45a press-fitted into the terminal through-hole 37 and the first contact portion 45a wider than the press-fit portion 45a. and second position regulating portions 245c and 245e, and provided between the first position regulating portion 245c and the second position regulating portion 245e, and having a width greater than that of the first and second position regulating portions 245c and 245e. and a narrow stress relief portion 245d.
- the guide through-hole 264 has a contact portion 264a that contacts the second position regulating portion 245e when the press-fit portion 45a is press-fitted into the terminal through-hole 37, and a larger inner diameter than the contact portion 264a. and an enlarged diameter portion 264b inside which the first position regulating portion 245c is arranged when the portion 45a is press-fitted into the terminal through-hole 37 .
- the first position regulating portion 245c and the second position regulating portion 245e abut against the abutting portion 264a, thereby regulating the movement of the press-fit terminal 145 and pushing the press-fit terminal 245 toward the terminal through-hole 37. can guide you with certainty.
- Embodiment 4 A circuit connection device 2 according to Embodiment 4 will be described below with reference to the drawings. Components having the same functions and actions as those of the first embodiment are given the same reference numerals, and descriptions thereof are omitted.
- FIG. 17 is a perspective view of the connector 304 of the circuit connecting device 2 according to Embodiment 2.
- FIG. 18 is a top view of connector 304.
- FIG. A connector 304 according to Embodiment 4 has a fourth positioning projection 47 and a fifth positioning projection 48 instead of the pair of first positioning projections 46 .
- the fourth positioning protrusion 47 has a cylindrical columnar portion 47b and a plurality of (four in the present embodiment) ribs 47a projecting from the columnar portion 47b.
- the plurality of ribs 47a are arranged at regular intervals (90° intervals in the present embodiment) in the circumferential direction of the column portion 47b.
- the rib 47a extends parallel to the axis of the column portion 47b.
- the rib 47a is provided over the entire length of the fourth positioning protrusion 47 .
- a tapered surface 47c that tapers toward the tip of the fourth positioning protrusion 47 is provided at the tip of the rib 47a. That is, the tip of the rib 47a is tapered toward the tip of the fourth positioning protrusion 47.
- the maximum diameter of the fourth positioning protrusion 47 (that is, the outer diameter of the fourth positioning protrusion 47 at the portion where the rib 47 a is provided) is larger than the inner diameter of the circuit board side through hole 38 .
- the fifth positioning protrusion 48 has a cylindrical column portion 48b and a plurality of (two in the present embodiment) ribs 48a projecting from the column portion 48b.
- the plurality of ribs 48a are arranged at equal intervals (180° intervals in the present embodiment) in the circumferential direction of the column portion 48b.
- the rib 48a extends parallel to the axis of the column portion 48b.
- the rib 48a is provided over the entire length of the fifth positioning protrusion 48.
- a tapered surface 48c that tapers toward the tip of the fifth positioning protrusion 48 is provided at the tip of the rib 48a. That is, the tip of the rib 48a is tapered toward the tip of the fifth positioning protrusion 48.
- the maximum diameter of the fifth positioning protrusion 48 (that is, the outer diameter of the fifth positioning protrusion 48 at the portion where the rib 48 a is provided) is larger than the inner diameter of the circuit board side through hole 38 .
- the fourth positioning protrusion 47 and the fifth positioning protrusion 48 By inserting the fourth positioning protrusion 47 and the fifth positioning protrusion 48 into the heat sink side through hole 56, the horizontal position of the connector 304 with respect to the heat sink 5, the circuit board 3 and the terminal alignment member 6 is adjusted. be.
- the fourth positioning protrusion 47 has four ribs 47a.
- the fifth positioning protrusion 48 has two ribs 48a.
- the horizontal displacement of the connector 304 with respect to the heat sink 5 is restricted by inserting the fourth positioning protrusion 47 into the circuit board side through hole 38 . Further, by inserting the fifth positioning protrusion 48 into the circuit board side through-hole 38 , the connector 304 is restricted from rotating with respect to the heat sink 5 with the fourth positioning protrusion 47 as the rotation axis.
- the connector 304 is further moved to the heat sink 5 side, and the press-fit terminals 45 are inserted into the guide through-holes 64 .
- the press-fit terminal 45 moves toward the circuit board 3 while being guided along the guide through hole 64 and is inserted into the terminal through hole 37 .
- a load is applied to the connector 304 in a direction perpendicular to the second surface 4 b of the connector 304 to push the connector 4 into the heat sink 5 .
- the press-fit terminal 45 is press-fitted into the terminal through-hole 37 and fixed.
- the fourth positioning protrusion 47 and the fifth positioning protrusion 48 are press-fitted into the heat sink-side through hole 56 and fixed.
- the diameters of the ribs 47a and 48a of the fourth positioning protrusion 47 and the fifth positioning protrusion 48 are such that the fourth positioning protrusion 47 and the fifth positioning protrusion 48 are press-fitted into the heat sink side through hole 56. is set to be lower than the press-fit load when press-fitting the press-fit terminal 45 into the terminal through-hole 37 .
- the connector 304 is fixed to the heat sink 5 by screwing while the connector 304 is pressed against the heat sink 5 .
- the connector 304 may It is not completely fixed to the heat sink 5. That is, there is play between the fifth positioning protrusion 48 and the circuit board side through hole 38 . As a result, the connector 304 is prevented from being lifted even when there is misalignment between the fourth positioning protrusion 47, the fifth positioning protrusion 48, and the circuit board side through-hole 38. be able to.
- the distal ends of the plurality of ribs 47a are tapered toward the distal end of the fourth positioning projection 47, and the distal ends of the plurality of ribs 48a are directed toward the distal end of the fifth positioning projection 48. It has a tapered shape. Thereby, the fourth positioning protrusion 47 and the fifth positioning protrusion 48 can be easily inserted into the heat sink side through hole 56 and the circuit board side through hole 38 . In addition, even if the ribs 47a and 48a are scraped when the fourth positioning protrusion 47 and the fifth positioning protrusion 48 are press-fitted into the circuit board side through hole 38, the generation of foreign matter can be suppressed.
- the ribs are provided on the positioning protrusion 46 of the connector 4, but the ribs are also provided on the second positioning protrusion 61 and the third positioning protrusion 62 of the terminal alignment member 6. may be provided.
- one of the pair of second positioning projections 61 has a third column and a plurality of third ribs projecting from the third column, and the pair of second positioning projections 61
- the other of the positioning protrusions 61 has a fourth column and a plurality of fourth ribs projecting from the fourth column.
- the number of the plurality of third ribs is, for example, four, and the number of the plurality of fourth ribs is, for example, two.
- the tips of the plurality of third ribs and the tips of the plurality of fourth ribs are tapered toward the tips of the second positioning protrusions 61 .
- One of the pair of third positioning protrusions 62 has a fifth column and a plurality of fifth ribs protruding from the fifth column, and the pair of third positioning protrusions
- the other of the portions 62 has a sixth post and a plurality of sixth ribs protruding from the sixth post.
- the number of the plurality of fifth ribs is, for example, four, and the number of the plurality of sixth ribs is, for example, two.
- the tips of the plurality of fifth ribs and the tips of the plurality of sixth ribs are tapered toward the tip of the third positioning protrusion 62 .
- the first positioning protrusion 46 is formed on the connector 4, and the second positioning protrusion 61 and the third positioning protrusion 62 are formed on the terminal alignment member 6.
- the second positioning recess is formed by a circuit board side through hole 38 penetrating the circuit board 3, and the first positioning recess and the third positioning recess are formed by a heat sink side through hole 56 penetrating the heat sink 5. It is however, the present disclosure is not limited to this.
- the first positioning protrusion may be formed on the heat sink 5 and the first positioning recess may be formed on the connector 4 .
- a second positioning protrusion may be formed on the circuit board 3 and a second positioning recess may be formed on the terminal alignment member 6 .
- a third positioning protrusion may be formed on the heat sink 5 and a third positioning recess may be formed on the terminal alignment member 6 .
- a load is applied to the circuit board 3 and the circuit board 3 is pushed into the heat sink 5, whereby the press-fit terminals 45 are press-fitted into the terminal through-holes 37 and fixed.
- the width of the press-fit portion 45a may be increased by applying axial pressure from the tip of the press-fit terminal 45 to the press-fit terminal 45, thereby making the press-fit terminal 45 suitable for use as a terminal.
- the electronic components are mounted on the first surface 3a of the circuit board 3, which is the surface on the output side of the rotating shaft 11. As shown in FIG. However, the present disclosure is not limited to this, and an electronic component may be mounted on the second surface 3b, which is the surface on the non-output side of the rotating shaft 11.
- the heat dissipation grease 52 may be filled not only between the heat generating component 35 and the heat dissipation part 51 but also between the circuit board 3 and the heat sink 5 entirely.
- the number of the plurality of ribs 47a is not limited to four, and the number of the plurality of ribs 48a is not limited to two.
- the number of ribs 47a may be the same as the number of ribs 48a.
- the circuit connection device 2 is not limited to the rotary electric machine device A, and can be applied to an inverter device, a DC-DC converter device, a microcomputer application control device, and the like.
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Abstract
Description
回路基板に実装される電子部品の冷却のために、ヒートシンクを設けることがある。ヒートシンクを回路基板とコネクタとの間に設ける場合、回路基板とコネクタとの間隔が離れるため、プレスフィット端子を端子用貫通孔に挿入することが難しい。特許文献1においては、プレスフィット端子の端子用貫通孔への挿入を容易とするために、端子整列部材が回路基板に取り付けられている。端子整列部材には、プレスフィット端子を端子用貫通孔へ案内するためのガイド貫通孔が形成されている。また、プレスフィット端子のガイド貫通孔への挿入を容易とするために、ガイド貫通孔のコネクタ側の端部には、コネクタ側の開口端に向かうに従い拡径するよう傾斜する挿入案内孔が設けられている。
プレスフィット端子とガイド貫通孔との衝突を防止するために、ガイド貫通孔の開口の径を大きくすることが考えられる。また、挿入案内孔の傾斜角を小さくすることにより、プレスフィット端子が座屈するのを防止することが考えられる。しかしながら、ガイド貫通孔の開口の径を大きくすると、ガイド貫通孔の配置間隔を大きくする必要があり、プレスフィット端子及び端子用貫通孔の配置間隔も大きくなる。また、挿入案内孔の傾斜角を小さくすると、所望の大きさの端子用貫通孔を形成するためには端子整列部材の厚みを大きくする必要がある。この結果、回路接続装置が大型化してしまう。
以下、実施の形態1に係る回路接続装置2及び回転電機装置Aについて、図面を参照して説明する。
図1は、回転電機装置Aの概略断面図である。回転電機装置Aは、多相巻線型の回転電機1と、回転電機1を制御する回路接続装置2とを備える。
環状配線部17は、巻線16に対して回転軸11の非出力側(すなわち、図1における上側)に配置されている。環状配線部17は、巻線16の端部にTIG溶接等で接続されている。
第1の軸受19aは、ヒートシンク5に固定されている。第2の軸受19bは、蓋部15に固定されている。
図1及び図2に示されるように、回路接続装置2は、回路基板3と、コネクタ4と、回路基板3とコネクタ4との間に設けられるヒートシンク5と、回路基板3とコネクタ4との間に設けられ、回路基板3に固定される端子整列部材6と、回路基板3及びヒートシンク5を覆うカバー7と、を有している。なお、図2は、カバー7を取り外した状態を示す。本実施の形態において、回路接続装置2は、回転電機1の巻線16に流れる電流を制御する制御ユニットである。
図3及び図4に示されるように、コネクタ4は、第1面4a及び第2面4bを有する本体部40と、電源端子41(接続端子)と、信号端子42(接続端子)と、電源側ハウジング43と、信号側ハウジング44と、複数のプレスフィット端子45と、一対の第1位置決め用突起部46と、を備える。図1に示されるように、第1面4aは、コネクタ4の上側(回転軸11の出力側)の面であり、第2面4bは、コネクタ4の下側(回転軸11の非出力側)の面である。また、図3は、コネクタ4を第1面4a側から見た図である。図4は、コネクタ4を第2面4b側から見た図である。
なお、本実施の形態においては、電源端子41と信号端子42とが異なる形状であるが、電源端子41及び信号端子42として、同一形状の端子を用いてもよい。電源端子41及び信号端子42として、3種類以上の形状の端子を用いてもよい。
また、電源端子41及び信号端子42が、回転軸11の出力側に向かって延びているが、回転軸11の非出力側に向かって延びていてもよい。
信号側ハウジング44は、本体部40の第2面4bに設けられる。信号側ハウジング44は、開口部を有する容器であり、内部に信号端子42を収容する。信号側ハウジング44は、本体部40と一体に形成されている。
なお、本実施の形態においては、電源側ハウジング43と信号側ハウジング44とを別個の容器としたが、電源側ハウジング43と信号側ハウジング44とが単一の容器により形成されていてもよい。また、電源側ハウジング43と信号側ハウジング44とが、3つ以上の容器により形成されていてもよい。すなわち、電源端子41及び信号端子42を、単一の容器に収容してもよく、3つ以上の容器に分けて収容してもよい。
なお、本実施の形態においては、プレスフィット端子45は、電源端子41及び信号端子42の延出方向と反対側に延びているが、プレスフィット端子45は、電源端子41及び信号端子42の延出方向に対して直交する方向に延びていてもよい。
図1及び図5に示されるように、回路基板3は、第1面3aと、第2面3bとを有している。第1面3aは、回路基板3の上側(回転軸11の出力側)の面であり、第2面3bは、回路基板3の下側(回転軸11の非出力側)の面である。また、図5は、回路基板3を第2面3b側から見た図である。
端子用貫通孔37の内面には、導電層が形成されている。プレスフィット端子45が端子用貫通孔37に圧入されることにより、プレスフィット端子45が端子用貫通孔37の内面の導電層と接触して電気的に接続される。プレスフィット端子45を用いることにより、半田付け等を行うことなく、回路基板3とコネクタ4とを電気的に接続することができる。したがって、回路接続装置2の製造が容易となり、また製造時間を短縮することができる。
図6及び図7に示されるように、端子整列部材6は、第1面6a及び第2面6bを有する本体部60と、一対の第2位置決め用突起部61と、一対の第3位置決め用突起部62と、端子ガイド部63と、を備える。第1面6aは、端子整列部材6の上側(回転軸11の出力側)の面であり、第2面6bは、端子整列部材6の下側(回転軸11の非出力側)の面である。また、図6は、端子整列部材6を第1面6a側から見た図である。図7は、端子整列部材6を第2面6b側から見た図である。
本体部60及び端子ガイド部63には、複数のガイド貫通孔64が形成されている。ガイド貫通孔64は、本体部60及び端子ガイド部63を上下方向に貫通する。すなわち、ガイド貫通孔64は、本体部60及び端子ガイド部63を、第1面6aから下面6cまで貫通する。複数のガイド貫通孔64が、複数の端子用貫通孔37と対応する位置に設けられる。ガイド貫通孔64は、端子用貫通孔37と連通する。ガイド貫通孔64の内径は、端子用貫通孔37の内径よりも大きい。ガイド貫通孔64の内径は、プレスフィット部45aの幅(最大幅)よりも大きい。ガイド貫通孔64は、プレスフィット端子45を端子用貫通孔37に向けて案内する。
ガイド貫通孔64の下面6c側の端部には、コネクタ4側の開口端に向かうに従い(すなわち、下面6c側に向かうに従い)拡径するよう傾斜する挿入案内孔65が設けられている。
第2位置決め用突起部61は、回路基板側貫通孔38に対応する位置に設けられる。回路基板側貫通孔38と第2位置決め用突起部61とは、同軸上に配置されている。第2位置決め用突起部61は、回路基板側貫通孔38に挿通される。
図8に示されるように、ヒートシンク5は、第1面5a及び第2面5bを有する本体部50と、放熱部51と、大型部品収容部53と、回転軸用貫通孔54と、開口部55と、一対のヒートシンク側貫通孔56(第1位置決め用凹部、第3位置決め用凹部)と、を有している。図1に示されるように、第1面5aは、ヒートシンク5の上側(回転軸11の出力側)の面である。第2面5bは、ヒートシンク5の下側(回転軸11の非出力側)の面である。また、図8は、ヒートシンク5を第1面5a側から見た図である。
第1のステップにおいては、まず、回路基板3を、第2面3bが上側となるよう配置する。端子整列部材6を、回路基板3の第2面3bと本体部60の第1面6aとが対向するよう配置する。端子整列部材6の第2位置決め用突起部61を回路基板3の回路基板側貫通孔38に挿通する。第2位置決め用突起部61の先端部は先細り形状となっているため、第2位置決め用突起部61を回路基板側貫通孔38へスムーズに挿入することができる。回路基板側貫通孔38に第2位置決め用突起部61が挿入されることによって、回路基板3に対する端子整列部材6の水平方向の位置が調整される。これにより、端子用貫通孔37の中心とガイド貫通孔64の中心とが一致するように、端子用貫通孔37とガイド貫通孔64との水平方向の位置が合わせられ、端子用貫通孔37とガイド貫通孔64とが互いに連通する。
第2のステップにおいては、まず、ヒートシンク5を、第1面5aが上側となるよう配置する。また、第1のステップにおいて互いに固定された回路基板3及び端子整列部材6の上下を反転させ、回路基板3及び端子整列部材6を、本体部50の第1面5aと回路基板3の第2面3bとが対向するよう配置する。端子整列部材6の第3位置決め用突起部62をヒートシンク5のヒートシンク側貫通孔56に挿入する。第3位置決め用突起部62の先端部は先細り形状となっているため、第3位置決め用突起部62をヒートシンク側貫通孔56へスムーズに挿入することができる。このとき、端子ガイド部63は、開口部55の内側に挿入される。端子整列部材6の本体部60は、回路基板3とヒートシンク5との間に挟まれる。ヒートシンク側貫通孔56に第3位置決め用突起部62が挿入されることによって、ヒートシンク5に対する回路基板3及び端子整列部材6の水平方向の位置が調整される。これにより、放熱部51(放熱グリス52)と発熱部品35とが対向するように、放熱部51(放熱グリス52)と発熱部品35との水平方向の位置が合わせられる。大型部品収容部53と平滑コンデンサ36とが対向するように、大型部品収容部53と平滑コンデンサ36との水平方向の位置が合わせられる。回転軸用貫通孔54と回転センサ31との水平方向の位置が合わせられ、これにより回転センサ31の位置ずれを抑えることができ、回転軸11の回転状態を精度よく検出することができる。
回路基板3をヒートシンク5に押し付けた状態で、回路基板3及び端子整列部材6をヒートシンク5にネジ締めにより固定する。なお、回路基板3及び端子整列部材6とヒートシンク5との固定は、ネジ締めに限られず、接着剤による固定、溶接による固定、蝋付けによる固定、半田付けによる固定、圧着固定等であってもよい。
第3のステップにおいては、第2のステップにおいて互いに固定された回路基板3、端子整列部材6及びヒートシンク5の上下を反転させ、回路基板3、端子整列部材6及びヒートシンク5を、本体部50の第2面5bが上側となるよう配置する。コネクタ4を、本体部50の第2面5bと本体部40の第1面4aとが対向するよう配置する。コネクタ4の第1位置決め用突起部46をヒートシンク5のヒートシンク側貫通孔56に挿入する。第1位置決め用突起部46の先端部は先細り形状となっているため、第1位置決め用突起部46をヒートシンク側貫通孔56へスムーズに挿入することができる。第1位置決め用突起部46がヒートシンク側貫通孔56に挿入されることによって、ヒートシンク5、回路基板3及び端子整列部材6に対するコネクタ4の水平方向の位置が調整される。これにより、プレスフィット端子45の中心と、端子用貫通孔37の中心と、ガイド貫通孔64の中心とが一致するように、プレスフィット端子45と、端子用貫通孔37及びガイド貫通孔64との水平方向の位置が合わせられる。
ここで、図12に示されるように、第1位置決め用突起部46の先端からヒートシンク側貫通孔56のコネクタ4側の開口端までの、プレスフィット端子45の延出方向における長さをL1とし、プレスフィット端子45の先端からガイド貫通孔64のコネクタ4側の開口端までの、プレスフィット端子45の延出方向における長さをL2とすると、長さL1は、長さL2よりも長い。したがって、第1位置決め用突起部46がヒートシンク側貫通孔56に挿入開始された段階では、プレスフィット端子45はガイド貫通孔64に挿入開始されていない。すなわち、第1位置決め用突起部46がヒートシンク側貫通孔56に挿入されることによってプレスフィット端子45とガイド貫通孔64との水平方向の位置が合わせられた後に、プレスフィット端子45をガイド貫通孔64に挿入することができる。したがって、プレスフィット端子45をガイド貫通孔64に確実かつスムーズに挿入することができる。また、ガイド貫通孔64には挿入案内孔65が形成されているため、プレスフィット端子45をガイド貫通孔64へよりスムーズに挿入することができる。
また、第1位置決め用突起部46とヒートシンク側貫通孔56とを嵌合させ、第2位置決め用突起部61と回路基板側貫通孔38とを嵌合させ、第3位置決め用突起部62とヒートシンク側貫通孔56とを嵌合させる。これにより、回路基板3、コネクタ4、ヒートシンク5、及び端子整列部材6の相対位置を調整することができる。したがって、回路基板3、コネクタ4、ヒートシンク5、及び端子整列部材6を、互いに容易かつ精度よく組み付けることができる。
さらに、従来の端子整列部材においては、コネクタと回路基板との相対位置がずれることによるプレスフィット端子とガイド貫通孔との衝突を防ぐために、例えばガイド貫通孔の開口の径を大きくする必要があった。本実施の形態に係る回路接続装置2においては、回路基板3、コネクタ4、ヒートシンク5、及び端子整列部材6の相対位置を調整し、プレスフィット端子45とガイド貫通孔64との位置を合わせた状態で、プレスフィット端子45をガイド貫通孔64に挿入することができる。この結果、ガイド貫通孔64のサイズを増加させなくても、プレスフィット端子45をガイド貫通孔64に確実に挿入することが可能であり、回路接続装置2の大型化を防止することができる。
以上より、本実施の形態に係る回路接続装置2においては、小型化を図りつつ、組立性を向上させることができる。
また、プレスフィット端子45の先端がガイド貫通孔64やその周囲に衝突して、プレスフィット端子45が座屈するのを防止することができる。したがって、高品質の回路接続装置2を提供することができる。
また、例えば、プレスフィット端子45のガイド貫通孔64への挿入を容易とするために、ガイド貫通孔64のコネクタ4側の端部に挿入案内孔65を設ける場合がある。また、挿入案内孔65の傾斜角を小さくすることにより、プレスフィット端子45が座屈するのを防止することが考えられる。ここで、挿入案内孔65の傾斜角を小さくすると、端子ガイド部63の厚みが大きくなってしまう。しかしながら、本実施の形態に係る回路接続装置2においては、端子ガイド部63が開口部55の内部に配置されるため、端子ガイド部63の厚みが大きくなったとしても、ヒートシンク5の厚みよりも小さい範囲であれば、回路接続装置2の大型化を防止することができる。
以下、実施の形態2に係る回路接続装置2について、図面を参照して説明する。なお、実施の形態1と同様の機能及び作用を有する構成要素については、同一の符号を付してその説明を省略する。
実施の形態2に係るコネクタ104は、複数のプレスフィット端子45の代わりに、複数のプレスフィット端子145を有する。
位置規制部145bがガイド貫通孔64に当接することにより、プレスフィット端子145の移動を規制して、プレスフィット端子145を端子用貫通孔37へ向けてより確実に案内することができる。したがって、プレスフィット端子145を端子用貫通孔37により確実かつスムーズに挿入することができる。また、プレスフィット端子145の先端がガイド貫通孔64や端子用貫通孔37と衝突することが防止でき、プレスフィット端子145の座屈をより確実に防止することができる。
以下、実施の形態3に係る回路接続装置2について、図面を参照して説明する。なお、実施の形態1と同様の機能及び作用を有する構成要素については、同一の符号を付してその説明を省略する。
実施の形態3に係るコネクタ204は、複数のプレスフィット端子45の代わりに、複数のプレスフィット端子245を有する。実施の形態3に係る端子整列部材206は、ガイド貫通孔64の代わりに、ガイド貫通孔264を有する。
当接部264aは、ガイド貫通孔264の下面6c側に設けられる。当接部264aの内径は、第1位置規制部245cの幅(最大幅)及び第2位置規制部245eの幅(最大幅)より僅かに大きい。プレスフィット端子245がガイド貫通孔264に挿通されるとき、第1位置規制部245c及び第2位置規制部245eは当接部264aに当接する。
拡径部264bは、ガイド貫通孔264の第1面6a側に設けられる。拡径部264bの内径は、当接部264aの内径よりも大きい。拡径部264bの内径は、端子用貫通孔37の内径よりも大きい。拡径部264bの内径は、第1位置規制部245cの幅及び第2位置規制部245eの幅よりも大きい。プレスフィット端子245が端子用貫通孔37に圧入されるとき、第1位置規制部245cは、拡径部264bに当接しない(拡径部264bから離間した)状態で、拡径部264bの内部に配置される。
プレスフィット端子245の挿入をさらに進めると、第2位置規制部245eが当接部264aに当接し、第1位置規制部245cは拡径部264bの内側に配置される。この状態で、コネクタ204に対して、コネクタ204の第2面4bと直交する方向に荷重を印加し、コネクタ204をヒートシンク5に押し込む。これにより、プレスフィット端子245が端子用貫通孔37に圧入され固定される。このとき、応力緩和部245dにより、プレスフィット端子245を端子用貫通孔37に圧入するときに発生する応力を緩和することができる。また、第1位置決め用突起部46がヒートシンク側貫通孔56に圧入され固定される。その後、コネクタ204をヒートシンク5に押し付けた状態で、コネクタ204をヒートシンク5にネジ締めにより固定する。
第1の位置規制部245c及び第2位置規制部245eが当接部264aに当接することにより、プレスフィット端子145の移動を規制して、プレスフィット端子245を端子用貫通孔37に向けてより確実に案内することができる。したがって、プレスフィット端子245を端子用貫通孔37により確実かつスムーズに挿入することができる。また、応力緩和部245dにより、プレスフィット端子245を端子用貫通孔37に圧入するときに発生する応力を緩和することができる。したがって、プレスフィット端子245に過度な応力がかかることを防止することができる。この結果、プレスフィット端子245に折れが発生することを防止し、プレスフィット端子245と端子用貫通孔37との接続品質を向上させることができる。
以下、実施の形態4に係る回路接続装置2について、図面を参照して説明する。なお、実施の形態1と同様の機能及び作用を有する構成要素については、同一の符号を付してその説明を省略する。
実施の形態4に係るコネクタ304は、一対の第1位置決め用突起部46の代わりに、第4位置決め用突起部47と、第5位置決め用突起部48とを有する。
本実施の形態においては、第4位置決め用突起部47は、4本のリブ47aを有する。第5位置決め用突起部48は、2本のリブ48aを有する。第4位置決め用突起部47を回路基板側貫通孔38に挿入することより、ヒートシンク5に対するコネクタ304の水平方向の変位が規制される。また、第5位置決め用突起部48を回路基板側貫通孔38に挿入することにより、コネクタ304がヒートシンク5に対して、第4位置決め用突起部47を回転軸として回転することが規制される。
具体的には、一対の第2位置決め用突起部61のうち一方は、第3の柱部と、第3の柱部から突出する複数の第3のリブと、を有し、一対の第2位置決め用突起部61のうち他方は、第4の柱部と、第4の柱部から突出する複数の第4のリブと、を有する。複数の第3のリブの数は、例えば4本であり、複数の第4のリブの数は、例えば2本である。複数の第3のリブの先端部及び複数の第4のリブの先端部は、第2位置決め用突起部61の先端に向けた先細り形状となっている。
また、一対の第3位置決め用突起部62のうち一方は、第5の柱部と、第5の柱部から突出する複数の第5のリブと、を有し、一対の第3位置決め用突起部62のうち他方は、第6の柱部と、第6の柱部から突出する複数の第6のリブと、を有する。複数の第5のリブの数は、例えば4本であり、複数の第6のリブの数は、例えば2本である。複数の第5のリブの先端部及び複数の第6のリブの先端部は、第3位置決め用突起部62の先端に向けた先細り形状となっている。
例えば、上記実施の形態においては、第1位置決め用突起部46は、コネクタ4に形成されており、第2位置決め用突起部61及び第3位置決め用突起部62は、端子整列部材6に形成されている。第2位置決め用凹部は、回路基板3を貫通する回路基板側貫通孔38により形成されており、第1位置決め用凹部及び第3位置決め用凹部は、ヒートシンク5を貫通するヒートシンク側貫通孔56により形成されている。しかしながら、本開示はこれに限られない。第1位置決め用突起部がヒートシンク5に形成されており、第1位置決め用凹部がコネクタ4に形成されていてもよい。第2位置決め用突起部が回路基板3に形成されており、第2位置決め用凹部が端子整列部材6に形成されていてもよい。第3位置決め用突起部がヒートシンク5に形成されており、第3位置決め用凹部が端子整列部材6に形成されていてもよい。
また、上記実施の形態においては、回路基板3に対して荷重を印加し、回路基板3をヒートシンク5に押し込むことより、プレスフィット端子45が端子用貫通孔37に圧入され固定される。しかしながら、プレスフィット端子45の種類によっては、プレスフィット端子45の先端からプレスフィット端子45に軸方向の圧力をかけて、プレスフィット部45aの幅を拡大させることにより、プレスフィット端子45を端子用貫通孔37に圧着させてもよい。
また、上記実施の形態においては、回転軸11の出力側の面である回路基板3の第1面3aに電子部品が搭載されている。しかしながら、本開示はこれに限られず、回転軸11の非出力側の面である第2面3bに電子部品が搭載されていてもよい。また、放熱グリス52は、発熱部品35と放熱部51との間のみでなく、回路基板3とヒートシンク5の間の全体に充填されていてもよい。
また、複数のリブ47aの数は4本に限られず、複数のリブ48aの数は2本に限られない。複数のリブ47aの数と複数のリブ48aの数とが同一であってもよい。
また、回路接続装置2は、回転電機装置Aに限られず、インバータ装置、DC-DCコンバータ装置、マイコン応用制御装置等に適用することができる。
Claims (18)
- 外部と接続される接続端子と、前記接続端子と接続されるプレスフィット端子と、を有するコネクタと、
前記プレスフィット端子が圧入される端子用貫通孔が形成される回路基板と、
前記コネクタと前記回路基板との間に配置されるとともに前記回路基板に固定され、前記プレスフィット端子を前記端子用貫通孔に向けて案内するガイド貫通孔が形成される端子ガイド部を有する端子整列部材と、
第1面に前記回路基板が固定され、前記第1面とは反対側の面である第2面に前記コネクタが固定され、前記第1面から前記第2面まで貫通するとともに前記端子ガイド部を内部に収容する開口部を有するヒートシンクと、
を備え、
前記コネクタ及び前記ヒートシンクのうち一方には、第1位置決め用突起部が形成され、前記コネクタ及び前記ヒートシンクのうち他方には、前記第1位置決め用突起部と嵌合される第1位置決め用凹部が形成され、
前記回路基板及び前記端子整列部材のうち一方には、第2位置決め用突起部が形成され、前記回路基板及び前記端子整列部材のうち他方には、前記第2位置決め用突起部と嵌合される第2位置決め用凹部が形成され、
前記ヒートシンク及び前記端子整列部材のうち一方には、第3位置決め用突起部が形成され、前記ヒートシンク及び前記端子整列部材のうち他方には、前記第3位置決め用突起部と嵌合される第3位置決め用凹部が形成される、回路接続装置。 - 前記第1位置決め用突起部は、前記コネクタに、前記プレスフィット端子と平行に延びるように形成されており、
前記第2位置決め用突起部及び前記第3位置決め用突起部は、前記端子整列部材に形成されており、
前記第2位置決め用凹部は、前記回路基板を貫通するように形成される回路基板側貫通孔であり、
前記第1位置決め用凹部及び前記第3位置決め用凹部は、前記ヒートシンクを貫通するように形成されるヒートシンク側貫通孔である、請求項1に記載の回路接続装置。 - 前記第1位置決め用突起部の先端から前記ヒートシンク側貫通孔の前記コネクタ側の開口端までの、前記プレスフィット端子の延出方向における長さは、前記プレスフィット端子の先端から前記ガイド貫通孔の前記コネクタ側の開口端までの、前記プレスフィット端子の延出方向における長さよりも長い、請求項2に記載の回路接続装置。
- 前記プレスフィット端子は、前記端子用貫通孔に圧入されるプレスフィット部と、前記プレスフィット部よりも幅が広く、前記ガイド貫通孔に当接する位置規制部と、を有する、請求項1から3のいずれか一項に記載の回路接続装置。
- 前記プレスフィット端子は、前記端子用貫通孔に圧入されるプレスフィット部と、前記プレスフィット部よりも幅が広い第1及び第2の位置規制部と、前記第1の位置規制部と前記第2の位置規制部との間に設けられ、前記第1及び第2の位置規制部よりも幅が狭い応力緩和部と、を有し、
前記ガイド貫通孔は、前記プレスフィット部が前記端子用貫通孔に圧入されるときに前記第2の位置規制部が当接する当接部と、前記当接部よりも内径が大きく、前記プレスフィット部が前記端子用貫通孔に圧入されるときに前記第1の位置規制部がその内側に配置される拡径部と、を有する、請求項1から3のいずれか一項に記載の回路接続装置。 - 前記コネクタには、前記第1位置決め用突起部を含む一対の第1位置決め用突起部が形成され、
前記一対の第1位置決め用突起部は前記プレスフィット端子を挟むよう設けられる、請求項2に記載の回路接続装置。 - 前記一対の第1位置決め用突起部のうち一方は、第1の柱部と、前記第1の柱部から突出する複数の第1のリブと、を有し、
前記一対の第1位置決め用突起部のうち他方は、第2の柱部と、前記第2の柱部から突出する複数の第2のリブと、を有し、
前記複数の第2のリブの数は、前記複数の第1のリブの数よりも少ない、請求項6に記載の回路接続装置。 - 前記複数の第1のリブの先端部及び前記複数の第2のリブの先端部は、前記第1位置決め用突起部の先端に向けた先細り形状となっている、請求項7に記載の回路接続装置。
- 前記端子整列部材には、前記第2位置決め用突起部を含む一対の第2位置決め用突起部が形成され、
前記一対の第2位置決め用突起部は前記ガイド貫通孔を挟むよう設けられる、請求項2に記載の回路接続装置。 - 前記一対の第2位置決め用突起部のうち一方は、第3の柱部と、前記第3の柱部から突出する複数の第3のリブと、を有し、
前記一対の第2位置決め用突起部のうち他方は、第4の柱部と、前記第4の柱部から突出する複数の第4のリブと、を有し、
前記複数の第4のリブの数は、前記複数の第3のリブの数よりも少ない、請求項9に記載の回路接続装置。 - 前記複数の第3のリブの先端部及び前記複数の第4のリブの先端部は、前記第2位置決め用突起部の先端に向けた先細り形状となっている、請求項10に記載の回路接続装置。
- 前記端子整列部材には、前記第3位置決め用突起部を含む一対の第3位置決め用突起部が形成され、
前記一対の第3位置決め用突起部は前記ガイド貫通孔を挟むよう設けられる、請求項2に記載の回路接続装置。 - 前記一対の第3位置決め用突起部のうち一方は、第5の柱部と、前記第5の柱部から突出する複数の第5のリブと、を有し、
前記一対の第3位置決め用突起部のうち他方は、第6の柱部と、前記第6の柱部から突出する複数の第6のリブと、を有し、
前記複数の第6のリブの数は、前記複数の第5のリブの数よりも少ない、請求項12に記載の回路接続装置。 - 前記複数の第5のリブの先端部及び前記複数の第6のリブの先端部は、前記第3位置決め用突起部の先端に向けた先細り形状となっている、請求項13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ネジ止めされている、請求項1から14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ネジ止めされている、請求項1から15のいずれか一項に記載の回路接続装置。
- 回転電機と、
前記回転電機を制御する、請求項1から16のいずれか一項に記載の回路接続装置と、
を備える、回転電機装置。 - 外部と接続される接続端子と、前記接続端子と接続されるプレスフィット端子と、を有するコネクタと、前記プレスフィット端子が圧入される端子用貫通孔が形成される回路基板と、前記コネクタと前記回路基板との間に配置されるとともに前記回路基板に固定され、前記プレスフィット端子を前記端子用貫通孔に向けて案内するガイド貫通孔が形成される端子ガイド部を有する端子整列部材と、第1面に前記回路基板が固定され、前記第1面とは反対側の面である第2面に前記コネクタが固定され、前記第1面から前記第2面まで貫通するとともに前記端子ガイド部を内部に収容する開口部を有するヒートシンクと、を備え、前記コネクタ及び前記ヒートシンクのうち一方には、第1位置決め用突起部が形成され、前記コネクタ及び前記ヒートシンクのうち他方には、前記第1位置決め用突起部と嵌合される第1位置決め用凹部が形成され、前記回路基板及び前記端子整列部材のうち一方には、第2位置決め用突起部が形成され、前記回路基板及び前記端子整列部材のうち他方には、前記第2位置決め用突起部と嵌合される第2位置決め用凹部が形成され、前記ヒートシンク及び前記端子整列部材のうち一方には、第3位置決め用突起部が形成され、前記ヒートシンク及び前記端子整列部材のうち他方には、前記第3位置決め用突起部と嵌合される第3位置決め用凹部が形成される、回路接続装置の製造方法であって、
前記第2位置決め用突起部を前記第2位置決め用凹部と嵌合し、前記端子整列部材を前記回路基板に固定する第1のステップと、
前記第3位置決め用突起部を前記第3位置決め用凹部と嵌合し、前記端子ガイド部を前記開口部の内部に収容し、前記端子整列部材を前記ヒートシンクに固定する第2のステップと、
前記第1位置決め用突起部を前記第1位置決め用凹部と嵌合し、前記プレスフィット端子を前記ガイド貫通孔に挿通するとともに前記端子用貫通孔に圧入させて、前記コネクタを前記ヒートシンクに固定する第3のステップと、
を備える、回路接続装置の製造方法。
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