Circuit connection device, method for manufacturing a circuit connection device, and rotating electric machine device

Abstract

The present invention provides a circuit connection device that precisely positions press-fit terminals and through-holes in a circuit board, thereby suppressing insertion failures due to buckling of press-fit terminals and the generation of metal debris due to damage to through-holes. [Solution] The device comprises a circuit board 11 on which electronic components are mounted and which has through-holes 24, a connector 16 equipped with external connection terminals 26, and a plurality of press-fit terminals 23 that extend from the external connection terminals 26 of the connector 16 and are integrally molded with the connector 16 to electrically connect to the through-holes 24 of the circuit board 11. The connector 16 is equipped with a resin binding portion 32 that binds the plurality of press-fit terminals 23 together, and the resin binding portion 32 is separated from the connector housing 28 and integrally molded with the press-fit terminals 23.

Description

Technical Field

[0001] The present disclosure relates to a circuit connection device, a method for manufacturing a circuit connection device, and a rotating electrical machine device.

Background Art

[0002] In order to control a rotating electrical machine, a circuit board on which electronic components are mounted and a circuit connection device that electrically connects the terminals of an external connection connector to the through-holes of the circuit board are required. Here, the circuit connection device is a device in which a circuit board on which electronic components are mounted and the terminals of an external connection connector are extended and connected to the through-holes of the circuit board. For example, a circuit connection device is used in the control unit of a rotating electrical machine device. Heat-generating components such as switching elements, shunt resistors, microcontrollers, and ICs used in an inverter, a power supply circuit, etc. for controlling the rotating electrical machine are mounted on the circuit board of the control unit of the rotating electrical machine device. Therefore, the circuit board is cooled by closely attaching a heat sink, and the terminals of the connector are connected to the through-holes of the circuit board with a predetermined distance from the housing of the external connection connector.

[0003] For the connection between the connector and the through-hole of the circuit board, press-fit terminals that can ensure electrical connection without soldering may be used. When the distance between the housing of the connector and the circuit board is increased, the distance to the tip of the press-fit terminal becomes larger, making it difficult to insert the press-fit terminal into the through-hole of the circuit board. When the connector is assembled with the center positions of the press-fit terminal and the through-hole misaligned, the tip of the press-fit terminal collides with the land portion of the through-hole, resulting in insertion failure due to terminal buckling. Also, in such a case, a short circuit may occur between the wiring pattern and the terminals, and the reliability of the product may be reduced.

[0004] To solve this problem, an assembly structure has been disclosed in which a terminal alignment member, equipped with through-holes and guide holes that match the through-holes of the circuit board, is fixed to the circuit board in order to adjust the position of the press-fit terminals of the connector and facilitate insertion into the through-holes (for example, Patent Document 1). [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2005-302614 [Overview of the project] [Problems that the invention aims to solve]

[0006] However, in the assembly structure of Patent Document 1, if the relative positional misalignment between the connector and the circuit board is large, the tip of the press-fit terminal may collide with the outside of the guide hole of the terminal alignment member, potentially causing the press-fit terminal to buckle. To prevent this collision, increasing the size of the guide hole opening would require increasing the spacing between adjacent through-holes, which would hinder the miniaturization of the circuit connection device. Furthermore, while reducing the inclination angle of the guide hole is effective in preventing buckling of press-fit terminals, reducing the inclination angle of the guide hole and making the opening for guiding the press-fit terminal sufficiently large necessitates increasing the thickness of the terminal alignment member, which hinders the miniaturization of the circuit connection device. In addition, there is the problem of increased component costs for the terminal alignment member and manufacturing costs for assembling the terminal alignment component.

[0007] This disclosure provides technology to solve the above-mentioned problems, and aims to provide a circuit connection device, a method for manufacturing a circuit connection device, and a rotating electric machine that can precisely position press-fit terminals and through-holes in a circuit board, thereby suppressing insertion failures due to buckling of press-fit terminals and the generation of metal scrap due to damage to through-holes. [Means for solving the problem]

[0008] The circuit connection device of the present disclosure comprises a circuit board on which electronic components are mounted and which has through-holes; a connector equipped with external connection terminals; and a plurality of press-fit terminals integrally molded with the connector, extending from the external connection terminals of the connector and electrically connecting to the through-holes of the circuit board, wherein the connector includes a resin bundling portion for bundling the plurality of press-fit terminals, and the resin bundling portion is integrally molded with the press-fit terminals, separate from the connector housing. The present disclosure provides a method for manufacturing a circuit connection device, comprising: a circuit board on which electronic components are mounted and which has through-holes; a connector equipped with external connection terminals; the connector comprising a plurality of press-fit terminals electrically connected to the through-holes of the circuit board and a resin bundling portion for bundling the plurality of press-fit terminals, wherein the resin bundling portion has a position adjustment hole for correcting the tip position of the press-fit terminals; and a connector assembly device having a position correction projection for correcting the tip position of the press-fit terminals, the method comprising: a position correction projection insertion step of inserting the tip of the position correction projection of the connector assembly device into the position adjustment hole of the resin bundling portion before the press-fit terminals are inserted into the through-holes; a tip position correction step of pressing the resin bundling portion with the pressing surface of the connector assembly device to correct the tip position of the press-fit terminals so that the tip position of the press-fit terminals coincides with the center position of the through-holes of the circuit board; and an assembly device retraction step of retracting the connector assembly device when the tip of the press-fit terminal is inserted into the through-hole. The present disclosure provides a method for manufacturing a circuit connection device, comprising: a circuit board on which electronic components are mounted and which has through-holes; a connector equipped with external connection terminals; the connector comprising a plurality of press-fit terminals electrically connected to the through-holes of the circuit board and a resin bundling portion for bundling the plurality of press-fit terminals, wherein the resin bundling portion has a tapered portion in a direction perpendicular to the arrangement direction of the press-fit terminals; and a connector assembly device having a corrective groove for correcting the tip position of the press-fit terminals, wherein the method includes: a corrective groove fitting step of fitting the corrective groove of the connector assembly device to the resin bundling portion before the press-fit terminals are inserted into the through-holes; a tip position correction step of pressing the resin bundling portion with the pressing surface of the connector assembly device to correct the tip position of the press-fit terminals so that the tip position of the press-fit terminals coincides with the center position of the through-holes; and an assembly device retraction step of retracting the connector assembly device when the tip of the press-fit terminal is inserted into the through-hole. The rotating electric machine apparatus of this disclosure is equipped with the above-mentioned circuit connection device on the rotating electric machine for controlling the rotating electric machine and supplying power to it. The rotating electric machine apparatus of this disclosure is equipped with a circuit connection device manufactured by the above-mentioned circuit connection device manufacturing apparatus for controlling the rotating electric machine and supplying power to the rotating electric machine. [Effects of the Invention]

[0009] According to the circuit connection device of this disclosure, a circuit connection device is obtained that can precisely position the press-fit terminal and the through-hole of the circuit board, thereby suppressing insertion failures due to buckling of the press-fit terminal and the generation of metal scrap due to damage to the through-hole. According to the manufacturing method of the circuit connection device of this disclosure, a manufacturing method for a circuit connection device is obtained that can precisely position the press-fit terminal and the through-hole of the circuit board, and suppress insertion failures due to buckling of the press-fit terminal and the generation of metal scrap due to damage to the through-hole. According to the rotating electric machine of this disclosure, a rotating electric machine is obtained that has a circuit connection device that can precisely position the press-fit terminal and the through-hole of the circuit board, and suppress insertion failures due to buckling of the press-fit terminal and the generation of metal scrap due to damage to the through-hole. [Brief explanation of the drawing]

[0010] [Figure 1] This is a cross-sectional view of a rotating electric machine according to Embodiment 1. [Figure 2] This is a perspective view of the circuit connection device according to Embodiment 1. [Figure 3] Figure 3A is a perspective view of the circuit board of the circuit connection device according to Embodiment 1. Figure 3B is a diagram showing the shape of the through-holes on the circuit board of the circuit connection device according to Embodiment 1. Figure 3C is a diagram showing the shape of the through-holes on the circuit board of the circuit connection device according to Embodiment 1. [Figure 4] Figure 4A is a perspective view of the connector of the circuit connection device according to Embodiment 1. Figure 4B is a cross-sectional view of the connector of the circuit connection device according to Embodiment 1. [Figure 5] This is a perspective view of the heat sink of the circuit connection device according to Embodiment 1. [Figure 6] Figure 6A is a process diagram for manufacturing a connector as a comparative example according to Embodiment 1. Figure 6B is a process diagram for manufacturing a connector as a comparative example according to Embodiment 1. Figure 6C is a process diagram for manufacturing a connector as a comparative example according to Embodiment 1. Figure 6D is a process diagram for manufacturing a connector as a comparative example according to Embodiment 1. [Figure 7] Figure 7A is an explanatory diagram illustrating the problems of the connector manufacturing process as a comparative example according to Embodiment 1. Figure 7B is an explanatory diagram illustrating the problems of the connector manufacturing process as a comparative example according to Embodiment 1. [Figure 8] This is a perspective view of the terminal connecting component of the circuit connection device according to Embodiment 1. [Figure 9] This is an explanatory diagram of a method for assembling the connector of the circuit connection device according to Embodiment 1 onto a circuit board. [Figure 10]It is an explanatory diagram of a method for assembling a connector of a circuit connection device according to Embodiment 1 to a circuit board. [Figure 11] It is a flowchart of a manufacturing method of a circuit connection device according to Embodiment 1. [Figure 12] It is a perspective view of a connector of a circuit connection device according to Embodiment 2. [Figure 13] It is a perspective view of a circuit board of a circuit connection device according to Embodiment 2. [Figure 14] It is a perspective view of a connector of a circuit connection device according to Embodiment 3. [Figure 15] It is an explanatory diagram of a method for assembling a connector according to Embodiment 3 to a circuit board. [Figure 16] It is a schematic cross-sectional view of a connector assembly portion at the time of inserting a connector assembly device according to Embodiment 3. [Figure 17] It is a flowchart of a manufacturing method of a circuit connection device according to Embodiment 3.

MODE FOR CARRYING OUT THE INVENTION

[0011] Embodiment 1. Embodiment 1 includes a circuit board having through holes on which electronic components are mounted, a connector having external connection terminals, and a plurality of press-fit terminals integrally formed with the connector that extend from the external connection terminals of the connector and are electrically connected to the through holes of the circuit board. The connector includes a resin binding portion that binds the plurality of press-fit terminals. The resin binding portion is integrally formed with the press-fit terminals separately from the connector housing. The resin binding portion has a position adjustment hole that fits with a position correction protrusion of a connector assembly device that corrects the tip position of the press-fit terminals. The through holes of the circuit board into which the press-fit terminals are inserted have a notch in a direction orthogonal to the arrangement direction of the plurality of press-fit terminals. Further, Embodiment 1 relates to a manufacturing method of a circuit connection device including a position correction protrusion insertion step, a tip position correction step, and an assembly device retraction step.

[0012] The circuit connection device according to Embodiment 1 will be described below with reference to Figure 1, a cross-sectional view of the rotating electric machine; Figure 2, a perspective view of the circuit connection device; Figure 3A, a perspective view of the circuit board of the circuit connection device; Figures 3B and 3C, perspective views of the through-holes on the circuit board; Figure 4A, a perspective view of the connector of the circuit connection device; Figure 4B, a cross-sectional view of the connector of the circuit connection device; Figure 5, a perspective view of the heat sink of the circuit connection device; Figures 6A, 6B, 6C, and 6D, which are process diagrams for manufacturing a connector as a comparative example; Figures 7A and 7B, which are explanatory diagrams of the problems in the connector manufacturing process as a comparative example; Figure 8, a perspective view of the terminal connecting component of the circuit connection device; and Figures 9 and 10, which are explanatory diagrams of the method for assembling the connector of the circuit connection device to the circuit board. Furthermore, the manufacturing method of the circuit connection device will be described with reference to Figure 11, which is a flowchart of the manufacturing method of the circuit connection device. In each figure, the same or corresponding parts are indicated by the same reference numeral.

[0013] Embodiment 1 will sequentially describe the configuration and function of the rotating electric machine 1 and the circuit connection device 2, which are the main components of the rotating electric machine device 1000, based on the drawings. Furthermore, the manufacturing method of the circuit connection device will be described.

[0014] First, the overall configuration of the rotating electric machine 1000 will be explained based on Figure 1. Figure 1 shows a cross-section of the rotor 5 of the rotating electric machine 1 that constitutes the rotating electric machine 1000, along the rotation axis 4. The rotating electric machine 1000 comprises a multiphase winding type rotating electric machine 1 and a circuit connection device 2. The circuit connection device 2 consists of a connector 16, a circuit board 11, and a heat sink 10. The circuit board 11, on which electronic components are mounted, is placed on the heat sink 10. The connector 16 has a press-fit terminal 23 extending from an external connection terminal 26 inside the power supply housing 27, which will be described later in Figure 4A. This press-fit terminal 23 electrically connects the external connection terminal 26 to a through-hole 24 of the circuit board 11, which is installed at a predetermined distance from the external connection terminal 26. Here, the circuit connection device 2 controls the current flowing through the armature winding 7 of the stator 6 of the rotating electric machine 1, thereby controlling the rotating electric machine 1. In the following explanation, the X, Y, and Z directions are indicated to clarify the positional relationships of each component. The X direction is the left-right direction on the page of Figure 1 (right is positive), the Y direction is the front-to-back direction on the page (front to back is positive), and the Z direction is the up-to-down direction on the page (up is positive). The X, Y, and Z directions are also indicated as appropriate in Figures 2 and beyond.

[0015] Next, the configuration of the rotating electric machine 1 will be described. The rotating electric machine 1 comprises a rotating shaft 4 housed in a cylindrical case 3, a rotor 5 fixed to the rotating shaft 4, and a stator 6 having an inner surface that faces the outer surface of the rotor 5 via an air gap. The stator 6 has the armature winding 7 wound around it and is press-fitted and fixed to the inner surface of the case 3. In Figure 1, the output side of the rotating shaft 4 is shown on the bottom (Z- direction), and the non-output side is shown on the top (Z- direction).

[0016] A ring-shaped wiring section 8 is positioned on the non-output side of the armature winding 7. The ring-shaped wiring section 8 is connected to the end of the armature winding 7 by TIG welding or the like. The ring-shaped wiring section 8 is a ring-shaped busbar that connects the wiring terminals of each phase winding. The wiring connection terminal 9 extends from the annular wiring section 8 to the non-output side of the rotating shaft 4 of the rotating electric machine 1, passing through the heat sink 10. The wiring connection terminal 9 is electrically connected to the winding end of the armature winding 7 via the annular wiring section 8.

[0017] The wiring connection terminal 9 consists of three conductors connected to the wiring connection terminals of the U-phase winding, V-phase winding, and W-phase winding of the armature winding 7, respectively. The wiring connection terminals 9 for each phase are extended into the circuit connection device 2 and connected to the circuit board 11 by soldering or other means.

[0018] The rotor 5 of the rotating electric machine 1 has multiple pairs of permanent magnets (not shown) arranged on its circumferential surface to form the field poles. The first bearing 12a and the second bearing 12b, which rotatably support the rotating shaft 4, are positioned on the non-output side and the output side of the rotating shaft 4, respectively, relative to the rotor 5. The first bearing 12a is positioned on the rotating shaft portion of the heat sink 10, which acts as a cover to seal the inside of the rotating electric machine 1000. On the other hand, the second bearing 12b is fixed to the output-side structure 13 of the rotating electric machine 1000. Furthermore, a sensor rotor 14 is fixed to the non-output end of the rotating shaft 4. The sensor rotor 14 is equipped with one or more pairs of permanent magnets.

[0019] Next, the configuration of the circuit connection device 2 will be explained based on Figure 2, a perspective view of the circuit connection device 2. The circuit connection device 2 is covered on its outer layer by a cover 15. Figure 2 shows the device with the cover 15 removed. The circuit connection device 2 consists of a connector 16, a circuit board 11, and a heat sink 10, and the external connection terminals 26 of the connector 16 and the through-holes 24 of the circuit board 11 are connected by press-fit terminals 23. Furthermore, the connector 16 and the heat sink 10 are provided with fixing holes 70 for securing the connector 16 and the heat sink 10 with bolts.

[0020] First, the circuit board 11 will be explained based on Figure 3A, which is a perspective view of the circuit board 11, and Figures 3B and 3C, which show the shape of the through-holes 24. Note that Figure 3A is a perspective view from the heat sink 10 side. The circuit board 11 is also called a printed circuit board. A rotation sensor 17 is arranged on the circuit board 11 coaxially with the sensor rotor 14, separated by a gap. The rotation sensor 17 detects changes in the magnetic field from the permanent magnet of the sensor rotor 14, which rotates with the rotation of the rotation axis 4, and converts this into an electrical signal. In addition to the rotation sensor 17, a resolver, Hall sensor, optical sensor, etc. may be used.

[0021] In addition to the rotation sensor 17, the circuit board 11 is equipped with heat-generating electronic components such as a microcontroller 18, a shunt resistor 19, and a switching element 20. These are collectively referred to as heat-generating components 21. Furthermore, large electronic components such as smoothing capacitors 22 are mounted on the circuit board 11. In addition, the circuit board 11 is provided with a terminal connection section 25 in which through-holes 24 into which the press-fit terminals 23 of the connector 16 are inserted are arranged.

[0022] To prevent the terminal tip from colliding with the through-hole 24 even if misalignment occurs in the press-fit terminal 23, as described later, a notch is provided in the through-hole 24 in the X direction, as shown in Figure 3B. In Figure 3B, notches are provided on both sides in the X direction, but only one notch may be provided in the X direction. In this case, the direction in which the notch is provided is selected based on the tendency of positional variation of the tip of the press-fit terminal 23 after the primary molding of the connector 16, as described later. Furthermore, as shown in Figure 3C, the same effect can be obtained by making the shape of the through-hole 24 an ellipse, where the major axis coincides with the X direction, instead of a notch.

[0023] Next, connector 16 will be described based on Figure 4A, a perspective view of connector 16, and Figure 4B, a cross-sectional view of AA in Figure 4A. The connector 16 includes a drive power housing 27a that houses a drive power terminal 26a for connecting to an external power source (battery), and a control power housing 27b that houses a control power terminal 26b that supplies power to electronic components such as the rotation sensor 17 and the microcontroller 18. When the drive power terminal 26a and the control power terminal 26b are described together, they are referred to as external connection terminal 26. When the drive power housing 27a and the control power housing 27b are described together, they are referred to as power housing 27. The power supply housing 27 is a container-shaped structure with an opening, formed by resin molding to accommodate the external connection terminals 26. Here, an example is shown where the power supply housing 27 is divided into two parts, but it may be a single container shape overall. It may also be divided into three or more container shapes. The connection terminals may all be of the same shape, or they may be divided into three or more different shapes. Furthermore, the part of the connector 16 that includes the power housing 27 and the internally molded press-fit terminal 23, but does not include the resin binding portion 32, is referred to as the connector housing 28.

[0024] Press-fit terminals 23 are used to extend from the drive power terminal 26a and the control power terminal 26b and to electrically connect to the through-hole 24 of the circuit board 11. Here, the press-fit terminals 23 extend to the opposite side from the drive power terminal 26a and the control power terminal 26b, which are located on the opening side of the connector housing 28.

[0025] The press-fit terminals 23 extending from the connector 16 are connected to the through-holes 24 of the circuit board 11. By using the press-fit terminals 23, an electrical connection between the external connection terminals 26 of the connector 16 and the through-holes 24 of the circuit board 11 can be ensured without soldering. Furthermore, by using the press-fit terminals 23, the assembly, i.e., manufacturing, of the circuit connection device 2 can be simplified, and the manufacturing time can be reduced. This reduces the cost of the circuit connection device 2.

[0026] In Figure 4A, four press-fit terminals 23 are each secured with one resin binding portion 32. As can be seen in Figure 4B, the press-fit terminals 23 are tilted approximately 0.5 to 5° towards the X-direction with respect to the vertical axis (Z-direction). Figures 2 and 4A show an example in which four press-fit terminals 23 are treated as a single group of press-fit terminals, and one resin binding portion 32 is provided for this group of press-fit terminals. It is desirable to treat the group of external connection terminals 26 as a single press-fit terminal group and provide one resin binding portion 32 to it. Note that the press-fit terminal group will be referred to as a terminal group as appropriate.

[0027] Next, the heatsink 10 will be explained based on Figure 5, which is a perspective view of the heatsink from the circuit board 11 side. Thermal grease 35 is applied to the heat dissipation section 34 provided on the circuit board side 10b of the heat sink 10. This allows the heat generated by the heat-generating components 21, such as the microcontroller 18, shunt resistor 19, and switching element 20, mounted on the circuit board 11, to be dissipated to the heat sink 10 via the thermal grease 35.

[0028] Furthermore, a large component housing section 36 is provided on the circuit board side 10b of the heat sink 10 to prevent interference with large electronic components such as smoothing capacitors 22. Furthermore, the through-hole 37 for the rotating shaft is a through-hole through which the rotation sensor 17 detects the rotation state of the rotating shaft 4 by the sensor rotor 14 attached to the non-output end of the rotating shaft 4. Furthermore, a relief groove 38 is provided to avoid interference with the press-fit terminal 23 of the connector 16.

[0029] In Figure 5, an example is shown where electronic components requiring heat dissipation are placed on the output side of the rotation axis of the circuit board 11. However, the electronic components may also be placed on the non-output side of the rotation axis of the circuit board 11. In this case, if a thick copper substrate is used for the circuit board 11, the heat generated by the electronic components placed on the non-output side can be dissipated to the heat sink 10 via the substrate and thermal grease. Furthermore, thermal grease 35 may also be filled between the circuit board 11 and the heat sink 10 in areas other than where the heat-generating component 21 is located.

[0030] Next, in order to make the features of the circuit connection device of Embodiment 1 easier to understand, the manufacturing process of a connector having press-fit terminals will be explained as a comparative example based on Figures 6A to 6D, and Figures 7A and 7B. To distinguish them from the components of Embodiment 1, each reference numeral will be denoted with "A" in the description.

[0031] The connector manufacturing process consists of Figures 6A to 6D, with the process progressing in the order of Figure 6A → Figure 6B → Figure 6C → Figure 6D. Figure 6A shows the bending process in which the press-fit terminal 23A is bent into the desired shape using a mold. Figure 6B shows the primary molding process, in which multiple bent terminals are joined together in a single component by resin molding to form a resin connecting portion 31A, and the entire component becomes a terminal connecting part 29A. Figure 6C shows the secondary molding process in which the terminal connecting component 29A, manufactured in the primary molding process, is set in a mold and molded as a connector housing 28A. Figure 6D shows the terminal trimming process, in which the terminal connection portion 30A of the press-fit terminal 23A, which is connected after molding, is cut off. Furthermore, the bending process for the press-fit terminal 23A can also be performed after the terminal connecting component 29A has been formed through primary molding.

[0032] In the bending process shown in Figure 6A, in order to suppress misalignment of the tip position of the press-fit terminal 23A, each group of press-fit terminals, where multiple terminal tips are connected by a terminal connecting portion 30A, is bent. The multiple bent terminal groups are integrated in primary molding to form a single terminal connecting part 29A with a resin connecting portion 31A. Subsequently, the terminal connecting part 29A is set in a mold for secondary molding, and the connector housing 28A is molded so as to enclose the resin connecting part 31A. By dividing the molding process into primary and secondary molding in this way, deformation of the terminals due to resin pressure during the molding of the connector housing 28A can be suppressed, and the positional accuracy of the press-fit terminals 23A can be ensured.

[0033] Next, the problems with the comparative method will be explained based on Figures 7A and 7B. Figure 7B is a view from arrow B in Figure 7A, that is, a view of the connector housing 28A from below. In the comparative example method, bending and forming are performed on the press-fit terminal group connected by the terminal connection part 30A, which has the advantage of being able to form the press-fit terminal 23A with high positional accuracy in the Y direction. On the other hand, since bending is required for each terminal connected by the terminal connection part 30A, there is a problem that the position of the press-fit terminal 23A in the X direction occurs for each terminal group due to variations in the amount of springback during bending.

[0034] Here, the features of the circuit connection device of Embodiment 1 will be described based on Figure 8, which is an external perspective view of the terminal connecting component 29. In this embodiment 1, the misalignment of the press-fit terminal 23 in the X direction is corrected, allowing the press-fit terminal 23 to be smoothly inserted into the through-hole 24. The press-fit terminals after bending are joined together by a resin connecting portion 31, and a resin bundling portion 32 is formed for each terminal group separately from the resin connecting portion 31. In addition, each resin bundling portion 32 provided on the terminal group is provided with a position adjustment hole 33 (which may be a through hole) used when assembling the connector 16 to the circuit board 11. The insertion side of the connector assembly device (the side in the direction of the X mark in Figure 4B) of the position adjustment hole 33 may be provided with a guide taper to facilitate the insertion of a projection for positioning. Furthermore, in the connector 16 according to this embodiment 1, the resin binding portion 32 is formed in such a way that it is separated from the connector housing 28 during the primary molding process. It is also desirable that the resin binding portion 32 be provided near the tip side of the press-fit terminal 23. Furthermore, as will be described later in Figure 9, the press-fit terminal 23 is pre-configured to be tilted by approximately 0.5 to 5° towards the X-direction of the connector assembly device 39, so that the X-direction of the tip of the press-fit terminal 23 can be adjusted by the connector assembly device 39 (see Figure 4B).

[0035] Next, the manufacturing method of the circuit connection device will be explained based on Figures 9 and 10, which are explanatory diagrams of how to assemble the connector 16 onto the circuit board 11. The connector assembly device 39 is provided with position correction protrusions 40 equal to the number of position adjustment holes 33 provided in the resin binding portion 32 of the connector 16. The tip diameter of these position correction protrusions 40 is set to fit into the position adjustment holes 33. Furthermore, the tip of the position-correcting projection 40 may be provided with a guide taper to facilitate entry into the position adjustment hole 33. Figure 10 is a schematic cross-sectional view of the connector assembly section when the connector assembly device 39 is inserted. When assembling the connector 16, the position correction projection 40 is inserted into the position adjustment hole 33 of the resin binding portion 32 before the press-fit terminal 23 is inserted into the through-hole 24. In this state, the tip position of the press-fit terminal 23 is corrected by pushing the side of the resin binding portion 32 that is inserted into the connector assembly device with the pushing surface 41 of the connector assembly device 39 in the direction of the arrow in Figure 10, so that the tip position of the press-fit terminal 23 coincides with the center position of the through-hole 24. Furthermore, since the press-fit terminal 23 is pre-configured to be tilted toward the connector assembly device insertion side, even if there is variation in the position of the press-fit terminal 23, the resin binding portion 32 will always be pressed in, ensuring reliable position correction. Furthermore, to prevent the connector assembly device 39 from over-pressing the resin binding portion 32, a physical stopper may be provided, or the connector assembly device 39 may be equipped with a laser displacement meter or similar device for displacement control. Furthermore, in each of the figures where the press-fit terminal 23 is tilted, as explained in Figures 4B, 9, and 10, the X direction is defined as "the direction perpendicular to the arrangement direction of the press-fit terminal" based on its relationship with the resin binding portion 32.

[0036] Subsequently, when the tip of the press-fit terminal 23 is inserted into the through-hole 24, the connector assembly device 39 is retracted, and a load is applied in the direction that pushes the connector 16 toward the circuit board 11. Finally, the connector 16 and the heat sink 10 are fixed together by inserting bolts (not shown) into the fixing holes 70. Furthermore, if electrical contact can be maintained and insertion completed simply by inserting the press-fit terminal 23 into the through-hole 24 with a low load, there is no need to apply further pressure in the axial direction.

[0037] Here, the manufacturing method of the circuit connection device is summarized based on the flowchart in Figure 11. The method for manufacturing the circuit connection device is a circuit connection device 2 comprising a circuit board 11 that controls a rotating electric machine 1 and supplies power, a connector 16 equipped with power terminals, the connector 16 comprising a plurality of press-fit terminals 23 integrally molded to the connector 16 that electrically connect to through-holes 24 of the circuit board 11 and a resin bundling part 32 that bundles the plurality of press-fit terminals 23, the resin bundling part 32 having position adjustment holes 33 for correcting the tip positions of the press-fit terminals 23, and a connector assembly device 39 having position correction protrusions 40 for correcting the tip positions of the press-fit terminals 23, and the method for manufacturing the circuit connection device is comprised of steps 01 (S01) to 03 (S03). Step 01 (S01), the position correction projection insertion step, involves inserting the tip of the position correction projection 40 of the connector assembly device 39 into the position adjustment hole 33 of the resin binding portion 32 before the press-fit terminal 23 is inserted into the through-hole 24. Step 02 (S02) is a tip position correction step in which the resin binding portion 32 is pressed with the pressing surface of the connector assembly device 39 to correct the tip position of the press-fit terminal 23 so that the tip position of the press-fit terminal 23 coincides with the center position of the through-hole 24 of the circuit board 11. Step 03 (S03) is the assembly device retraction step, in which the connector assembly device 39 is retracted when the tip of the press-fit terminal 23 is inserted into the through-hole 24.

[0038] By installing the circuit connection device 2 of Embodiment 1 or a circuit connection device 2 manufactured by the method for manufacturing a circuit connection device on the rotating electric machine 1 in order to control the rotating electric machine 1 and supply power to it, a rotating electric machine apparatus 1000 equipped with a circuit connection device 2 having the characteristics of Embodiment 1 can be obtained.

[0039] Here, we summarize the effects of the circuit connection device of Embodiment 1 described above. In the comparative example connector, due to variations in the amount of springback during the bending of the press-fit terminals, positional variations occurred in the X direction in Figure 7B for each group of bent press-fit terminals. In the comparative example method, if the center positions of the press-fit terminals and through-holes are misaligned when assembling the connector, there is a risk of insertion failure due to buckling of the press-fit terminals and the generation of metal shavings due to damage to the through-holes. In such cases, there is also a risk of short circuits occurring between the wiring patterns and terminals on the circuit board.

[0040] In the circuit connection device 2 according to Embodiment 1, the position correction projection 40 is inserted into the position adjustment hole 33 before the press-fit terminal 23 is inserted into the through-hole 24. By pushing the connector assembly device insertion side of the resin binding portion 32 toward the connector assembly device insertion side, the tip position of the press-fit terminal 23 can be corrected with high precision. Furthermore, by forming the resin binding portion 32 separately from the connector housing 28 for each group of external connection terminals and providing it near the tip of the press-fit terminal 23, it is possible to straighten it with low load. In addition, by providing a notch in the through-hole 24 in a direction perpendicular to the arrangement direction of the press-fit terminal 23, it is possible to prevent the terminal tip from colliding with the through-hole 24 even if the straightening of the terminal is insufficient.

[0041] As a result of the above effects, it is possible to prevent the tip of the press-fit terminal 23 from colliding with the through-hole 24, which would cause the press-fit terminal 23 to buckle and negatively affect its quality, and to insert the press-fit terminal 23 into the through-hole 24 smoothly. Furthermore, since assembly is possible without the need for guide components or the process of assembling guide components, it is possible to improve the reliability of inserting the press-fit terminal 23 at a low cost.

[0042] A rotating electric machine 1000 equipped with such a circuit connection device 2 can similarly provide a rotating electric machine 1000 with improved reliability at a low cost.

[0043] As described above, the circuit connection device of Embodiment 1 provides a circuit connection device that can precisely position the press-fit terminal and the through-hole of the circuit board, thereby suppressing insertion failures due to buckling of the press-fit terminal and the generation of metal scrap due to damage to the through-hole. Furthermore, the manufacturing method of the circuit connection device of Embodiment 1 provides a manufacturing method for a circuit connection device that can precisely position the press-fit terminal and the through-hole of the circuit board, thereby suppressing insertion failures due to buckling of the press-fit terminal and the generation of metal scrap due to damage to the through-hole.

[0044] Embodiment 2. The circuit connection device of Embodiment 2 is a modified version of Embodiment 1, and simplifies the components necessary for assembling the circuit connection device.

[0045] The circuit connection device of Embodiment 2 will be described, focusing on the differences from Embodiment 1, based on Figure 12, a perspective view of the connector of the circuit connection device, and Figure 13, a perspective view of the circuit board of the circuit connection device. In the drawings of Embodiment 2, parts that are the same as or corresponding to those in Embodiment 1 are denoted by the same reference numerals. For the purpose of distinguishing this embodiment from Embodiment 1, the components are referred to as the circuit connection device 102, the circuit board 111, and the connector 116.

[0046] Embodiment 2 will be described with reference to Figures 12 and 13. In Embodiment 2, the components other than the circuit board 111 and connector 116 are the same as in Embodiment 1. The circuit connection device 102 according to Embodiment 2 is a modified version of Embodiment 1, and aims to reduce manufacturing costs by simplifying the equipment for the connector assembly process. In this embodiment, the press-fit terminal 23 and the through-hole 24 are positioned with high precision using a position-regulating projection 52 provided on the resin binding portion 51 of the press-fit terminal 23 and a position-regulating hole 53 provided on the circuit board 111.

[0047] Figure 12 is an external perspective view of the connector 116 according to Embodiment 2. The resin binding portion 51 of the connector 116 is provided with a cylindrical position-regulating projection 52 in the axial direction of the press-fit terminal 23. This position-regulating projection 52 is formed during the primary molding process that forms the resin binding portion 51. The cylindrical tip of the position-regulating projection 52 is tapered by 0.5 to 30° to improve insertion into the circuit board 111. Furthermore, the length from the resin binding portion 51 to the tip of the position-regulating projection 52 is set to be longer than the length from the resin binding portion 51 to the tip of the press-fit terminal 23. Furthermore, although Figure 12 shows an example in which one position-regulating projection 52 is provided on each resin binding portion 51, two position-regulating projections 52 may be provided within the same resin binding portion 51 so as to sandwich the press-fit terminal 23.

[0048] As shown in Figure 13, the circuit board 111 is provided with a position-regulating hole 53 for which the position-regulating projection 52 fits. Unlike Embodiment 1, the press-fit terminal 23 is not provided with a tilt of 0.5 to 5° in the X direction as described in Figure 4B.

[0049] Next, the assembly method for the circuit connection device 102 will be explained. During connector assembly, before the tip of the press-fit terminal 23 is inserted into the through-hole 24, the position-regulating projection 52 provided on the resin binding portion 51 is inserted into the position-regulating hole 53 of the circuit board 111. Insertion into the through-hole 24 begins with the tip position of the press-fit terminal 23 corrected. By providing a resin binding portion 51 for each group of external connection terminals, the terminal position of the press-fit terminal 23 can be corrected when a load is applied to the connector 116 in the insertion direction of the press-fit terminal 23. Finally, the connector 116 and the heatsink 10 are secured by inserting bolts (not shown) into the fixing holes 70. Furthermore, in this second embodiment, the connector assembly device 39 for correcting the terminal position of the press-fit terminal 23, which was necessary in the first embodiment, is no longer required.

[0050] The effects obtained by the circuit connection device 102 configured as described above will be explained. In Embodiment 2, the position-regulating projection 52 is inserted into the position-regulating hole 53 of the circuit board 111 before the tip of the press-fit terminal 23 is inserted into the through-hole 24, and after the tip position of the press-fit terminal 23 is corrected, the press-fit terminal 23 is inserted into the through-hole 24. Therefore, it is possible to suppress problems such as the tip of the press-fit terminal 23 colliding with the through-hole 24 and causing the press-fit terminal 23 to buckle, and damage to the land portion of the through-hole 24 and generation of metal shavings. Furthermore, the connector assembly device 39 required in Embodiment 1 for correcting the tip position of the press-fit terminal 23 is no longer necessary, thus simplifying the equipment required for connector assembly. As a result, the product can be manufactured at a lower cost while maintaining the same level of reliability of press-fit terminal connection as in Embodiment 1.

[0051] Furthermore, by installing the circuit connection device 102 of Embodiment 2 on the rotating electric machine 1 to control the rotating electric machine 1 and supply power to it, a rotating electric machine device 1000 equipped with a circuit connection device 102 having the characteristics of Embodiment 2 can be obtained.

[0052] As described above, the circuit connection device of Embodiment 2 provides a circuit connection device that can precisely position the press-fit terminals and the through-holes of the circuit board, thereby suppressing insertion failures due to buckling of the press-fit terminals and the generation of metal scraps due to damage to the through-holes. Furthermore, the components required for assembling the circuit connection device can be simplified.

[0053] Embodiment 3. The circuit connection device of Embodiment 3 is a modified example of Embodiment 1, with a simplified shape for the resin binding portion.

[0054] The circuit connection device of Embodiment 3 will be explained, focusing on the differences from Embodiment 1, based on Figure 14, a perspective view of the connector of the circuit connection device; Figure 15, an explanatory diagram of the method for assembling the connector to the circuit board; Figure 16, a schematic cross-sectional view of the connector assembly part when the connector assembly device is inserted; and Figure 17, a flowchart of the manufacturing method of the circuit connection device. In the drawings of Embodiment 3, parts that are the same as or corresponding to those in Embodiment 1 are denoted by the same reference numerals. For the purpose of distinguishing this embodiment from Embodiment 1, the circuit connection device 202, circuit board 211, and connector 216 are used.

[0055] Embodiment 3 will be described with reference to Figures 14 to 17. The circuit connection device 202 according to Embodiment 3 is a modified version of Embodiment 1, and aims to miniaturize the product by simplifying the shape of the resin binding portion 61. In this embodiment, the press-fit terminal 23 and the through-hole 24 are positioned with high precision by fitting the straightening groove 63 of the connector assembly device 62 into the outer shape of the resin binding portion 61 of the press-fit terminal 23. The only differences between this embodiment and the circuit connection device 2 according to Embodiment 1 are the shape of the resin binding portion 61 of the connector 216 and the shape of the connector assembly device 62. The inclination of the press-fit terminal (approximately 0.5 to 5° towards the X-direction) as described in Figure 4B of Embodiment 1 is the same.

[0056] Figure 14 is an external perspective view of the connector 216 according to Embodiment 3. Unlike Embodiments 1 and 2, the resin binding portion 61 is not provided with position adjustment holes or position regulating protrusions. Furthermore, the side of the resin binding portion 61 that is inserted into the connector assembly device (X-direction side) is provided with a tapered portion that acts as a guide when the position is regulated by the straightening groove 63 of the connector assembly device 62.

[0057] Next, the assembly method for the circuit connection device 202 will be described. Figure 15 is an explanatory diagram of the connector assembly method, and Figure 16 is a schematic diagram of the CC cross-section in Figure 15. Similar to Embodiment 1, the position of each external connection terminal group is corrected by the correction groove 63 of the connector assembly device 62 before the tip of the press-fit terminal 23 is inserted into the through-hole 24. The connector assembly device 62 has a recessed shape to fit with the resin binding portion 61, and a tapered portion is provided in the recess so that the tapered portion provided on the resin binding portion 61 fits into it. The tip position of the press-fit terminal 23 is corrected by pressing the resin binding portion 61 with the pressing surface 64 of the connector assembly device 62. Subsequently, when the tip of the press-fit terminal 23 is inserted into the through-hole 24, the connector assembly device 62 is retracted. Finally, the connector 216 and the heatsink 10 are secured by inserting bolts (not shown) into the fixing holes 70. Furthermore, if electrical contact can be maintained and insertion completed simply by inserting the press-fit terminal 23 into the through-hole 24 with a low load, there is no need to apply further pressure in the axial direction.

[0058] Here, the manufacturing method of the circuit connection device is summarized based on the flowchart in Figure 17. The method for manufacturing the circuit connection device comprises a circuit board 211 that controls the rotating electric machine 1 and supplies power, a connector 216 equipped with external connection terminals, the connector 216 comprising a plurality of press-fit terminals 23 that electrically connect to through-holes 24 of the circuit board 211 and a resin binding portion 61 that binds the plurality of press-fit terminals 23, the resin binding portion 61 having a tapered portion in a direction perpendicular to the arrangement direction of the press-fit terminals 23, and a connector assembly device 62 having a corrective groove 63 that corrects the tip position of the press-fit terminals 23, and the method for manufacturing the circuit connection device comprises steps 11 (S11) to 13 (S13). Step 11 (S11) is a straightening groove fitting step in which the straightening groove 63 of the connector assembly device 62 is fitted to the resin binding portion 61 before the press-fit terminal 23 is inserted into the through-hole 24. Step 12 (S12) is a tip position correction step in which the resin binding portion 61 is pressed with the pressing surface of the connector assembly device 62 to correct the tip position of the press-fit terminal 23 so that the tip position of the press-fit terminal 23 coincides with the center position of the through-hole 24. Step 13 (S13) is the assembly device retraction step, in which the connector assembly device 62 is retracted when the tip of the press-fit terminal 23 is inserted into the through-hole 24.

[0059] The effects obtained by the circuit connection device 202 configured as described above will be explained. In Embodiment 3, the outer shape of the resin binding portion 61 and the corrective groove 63 of the connector assembly device 62 make it possible to correct the position of the press-fit terminal 23. As a result, it is possible to obtain a circuit connection device and a manufacturing method thereof that improve the reliability of inserting the press-fit terminal 23 with the same effects as in Embodiment 1. Furthermore, in this third embodiment, since there is no need to provide position adjustment holes and position regulating protrusions in the resin binding portion, the external dimensions of the resin binding portion can be reduced. As a result, the spacing between the resin binding portions can be reduced, making it possible to miniaturize the product.

[0060] As described above, the circuit connection device of Embodiment 3 provides a circuit connection device that can precisely position the press-fit terminal and the through-hole of the circuit board, thereby suppressing insertion failures due to buckling of the press-fit terminal and the generation of metal scrap due to damage to the through-hole. Furthermore, according to the manufacturing method of the circuit connection device of Embodiment 3, a manufacturing method for a circuit connection device is obtained that can precisely position the press-fit terminal and the through-hole of the circuit board, thereby suppressing insertion failures due to buckling of the press-fit terminal and the generation of metal scrap due to damage to the through-hole. Furthermore, the shape of the resin binding part can be simplified, allowing for a smaller product.

[0061] While this disclosure describes various exemplary embodiments and examples, the various features, aspects, and functions described in one or more embodiments are not limited to the application of a particular embodiment, but are applicable individually or in various combinations to the embodiments. Accordingly, countless variations not illustrated are conceivable within the scope of the art disclosed in this specification. These include, for example, modifying, adding or omitting at least one component, or even extracting at least one component and combining it with components of other embodiments.

[0062] The various aspects of this disclosure are summarized below as an appendix.

[0063] (Note 1) A circuit board with electronic components mounted on it and having through-holes, A connector equipped with external connection terminals, A circuit connection device comprising a plurality of press-fit terminals integrally molded with the connector, extending from the external connection terminal of the connector and electrically connecting to the through-hole of the circuit board, The connector is a circuit connection device comprising a resin bundling portion for bundling a plurality of the press-fit terminals, wherein the resin bundling portion is molded integrally with the press-fit terminals and is separate from the connector housing. (Note 2) The circuit connection device according to Appendix 1, wherein the resin binding portion has a position adjustment hole that engages with a position correction projection of a connector assembly device for correcting the tip position of the press-fit terminal. (Note 3) The circuit connection device according to Appendix 1 or Appendix 2, wherein the through-hole of the circuit board into which the press-fit terminals are inserted has a notch in a direction perpendicular to the arrangement direction of the plurality of press-fit terminals. (Note 4) The circuit connection device according to Appendix 11 or Appendix 2, wherein the shape of the through-hole in the circuit board into which the press-fit terminals are inserted is an elliptical shape in which the direction perpendicular to the arrangement direction of the plurality of press-fit terminals coincides with the major axis direction. (Note 5) The circuit connection device according to any one of the appendices 1 to 4, wherein the press-fit terminals are perpendicular to the arrangement direction of the plurality of press-fit terminals and inclined in the arrangement direction of the through-holes of the circuit board. (Note 6) The circuit connection device according to any one of the appendices 1 to 5, wherein the resin binding portion is provided in multiple quantities for each group of external connection terminals. (Note 7) The circuit connection device according to any one of Appendix 1, Appendix 3, Appendix 4, or Appendix 6, wherein the resin binding portion is provided with a position-regulating projection in the axial direction of the press-fit terminal, and the circuit board has a position-regulating hole into which the position-regulating projection fits. (Note 8) The circuit connection device according to Appendix 7, wherein the length from the resin binding portion to the tip of the position-regulating projection is longer than the length from the resin binding portion to the tip of the press-fit terminal. (Note 9) The circuit connection device according to Appendix 7 or Appendix 8, wherein the position-regulating projection and the position-regulating hole are arranged in two or more places on each resin-binding portion so as to sandwich the press-fit terminals bound by the resin-binding portion. (Note 10) The circuit connection device according to any one of Appendix 1 or Appendix 3 to 6, wherein the resin binding portion has a tapered portion perpendicular to the arrangement direction of the plurality of press-fit terminals and in the arrangement direction of the through-holes of the circuit board. (Note 11) A circuit connection device comprising: a circuit board on which electronic components are mounted and which has through-holes; a connector equipped with external connection terminals; the connector comprising a plurality of press-fit terminals electrically connected to the through-holes of the circuit board and a resin binding portion for binding the plurality of press-fit terminals, wherein the resin binding portion has position adjustment holes for correcting the tip positions of the press-fit terminals; Using a connector assembly device having a position-correcting projection for correcting the tip position of the press-fit terminal, A position correction projection insertion step, in which the tip of the position correction projection of the connector assembly device is inserted into the position adjustment hole of the resin bundling portion before the press-fit terminal is inserted into the through-hole, A tip position correction step in which the resin binding portion is pressed in with the pressing surface of the connector assembly device, and the tip position of the press-fit terminal is corrected so that the tip position of the press-fit terminal coincides with the center position of the through-hole of the circuit board, A method for manufacturing a circuit connection device, comprising: an assembly device retraction step of retracting the connector assembly device when the tip of the press-fit terminal is inserted into the through-hole. (Note 12) A circuit connection device comprising: a circuit board on which electronic components are mounted and which has through-holes; a connector equipped with external connection terminals; the connector comprising a plurality of press-fit terminals electrically connected to the through-holes of the circuit board and a resin binding portion for binding the plurality of press-fit terminals, wherein the resin binding portion has a tapered portion in a direction perpendicular to the arrangement direction of the press-fit terminals; Using a connector assembly device having a corrective groove for correcting the tip position of the press-fit terminal, A straightening groove fitting step in which the straightening groove of the connector assembly device is fitted to the resin binding portion before the press-fit terminal is inserted into the through-hole, A tip position correction step in which the resin binding portion is pressed in with the pressing surface of the connector assembly device, and the tip position of the press-fit terminal is corrected so that the tip position of the press-fit terminal and the center position of the through-hole coincide; A method for manufacturing a circuit connection device, comprising: an assembly device retraction step of retracting the connector assembly device when the tip of the press-fit terminal is inserted into the through-hole. (Note 13) A rotating electric machine apparatus comprising a circuit connection device described in any one of the appendices 1 to 10 for controlling the rotating electric machine and supplying power to it. (Note 14) A rotating electric machine apparatus comprising a rotating electric machine equipped with a circuit connection device manufactured by a circuit connection device manufacturing apparatus described in Appendix 11 or Appendix 12 for controlling the rotating electric machine and supplying power to it. [Explanation of Symbols]

[0064] 1. Rotating electric machine, 2. 102. 202. Circuit connection device, 3. Case, 4. Rotating shaft, 5 Rotor, 6 Stator, 7 Armature winding, 8 Ring wiring section, 9 Wiring connection terminals, 10 Heat sink, 10b Circuit board side, 11,111,211 Circuit board, 12a First bearing, 12b Second bearing, 13 Structure, 14 Sensor rotor, 15 Cover, 16, 116, 216 Connectors, 17 Rotation Sensor, 18 Microcontroller, 19 Shunt resistor, 20 Switching element, 21 Heat-generating component, 22 Smoothing capacitor, 23 Press-fit terminal, 24 Through-hole, 25 Terminal connection section, 26 External connection terminal, 26a Drive power terminal, 26b Control power terminal, 27 Power supply housing, 27a Drive power supply housing, 27b Control power supply housing, 28 Connector housing, 29 Terminal connector, 31 Resin connection part, 32 Resin binding part, 33 Position adjustment hole, 34 Heat dissipation part, 35 Thermal grease, 36 Large component housing, 37 Through hole for rotating shaft, 38 Relief groove, 39 Connector assembly device, 40 Position correction projection, 41 Push-in surface, 51 Resin binding part, 52 Position-regulating projection, 53 Position-regulating hole, 61 Resin binding part, 62 Connector assembly device, 63 Correction groove, 64 Press-fit surface, 70 Fixing hole, 23A Press-fit terminal, 28A Connector housing, 29A Terminal connector, 30A Terminal connector, 31A Resin connecting part, 1000 rotational electric machine device.

Claims

1. A circuit board with electronic components mounted on it and having through-holes, A connector equipped with external connection terminals, A circuit connection device comprising a plurality of press-fit terminals integrally molded with the connector, extending from the external connection terminal of the connector and electrically connecting to the through-hole of the circuit board, The connector is a circuit connection device comprising a resin bundling portion for bundling a plurality of the press-fit terminals, wherein the resin bundling portion is molded integrally with the press-fit terminals and is separate from the connector housing.

2. The circuit connection device according to claim 1, wherein the resin binding portion has a position adjustment hole that engages with a position correction projection of a connector assembly device for correcting the tip position of the press-fit terminal.

3. The circuit connection device according to claim 1 or claim 2, wherein the through-hole of the circuit board into which the press-fit terminals are inserted has a notch in a direction perpendicular to the arrangement direction of the plurality of press-fit terminals.

4. The circuit connection device according to claim 1 or claim 2, wherein the shape of the through-hole in the circuit board into which the press-fit terminals are inserted is an elliptical shape in which the direction perpendicular to the arrangement direction of the plurality of press-fit terminals coincides with the major axis direction.

5. The circuit connection device according to claim 1 or claim 2, wherein the press-fit terminals are perpendicular to the arrangement direction of the plurality of press-fit terminals and inclined in the arrangement direction of the through-holes of the circuit board.

6. The circuit connection device according to claim 1 or claim 2, wherein a plurality of resin binding portions are provided for each group of external connection terminals.

7. The circuit connection device according to claim 1, wherein the resin binding portion is provided with a position-restricting projection in the axial direction of the press-fit terminal, and the circuit board has a position-restricting hole into which the position-restricting projection fits.

8. The circuit connection device according to claim 7, wherein the length from the resin binding portion to the tip of the position-regulating projection is longer than the length from the resin binding portion to the tip of the press-fit terminal.

9. The circuit connection device according to claim 7 or claim 8, wherein two or more position-regulating protrusions and position-regulating holes are arranged in each resin-binding portion so as to sandwich the press-fit terminals bound in the resin-binding portion.

10. The circuit connection device according to claim 1, wherein the resin binding portion is perpendicular to the arrangement direction of the plurality of press-fit terminals and has a tapered portion in the arrangement direction of the through-holes of the circuit board.

11. A circuit connection device comprising: a circuit board on which electronic components are mounted and which has through-holes; a connector equipped with external connection terminals; the connector comprising a plurality of press-fit terminals electrically connected to the through-holes of the circuit board and a resin binding portion for binding the plurality of press-fit terminals, wherein the resin binding portion has position adjustment holes for correcting the tip positions of the press-fit terminals; Using a connector assembly device having a position-correcting projection for correcting the tip position of the press-fit terminal, A position correction projection insertion step, in which the tip of the position correction projection of the connector assembly device is inserted into the position adjustment hole of the resin bundling portion before the press-fit terminal is inserted into the through-hole, A tip position correction step in which the resin binding portion is pressed in with the pressing surface of the connector assembly device, and the tip position of the press-fit terminal is corrected so that the tip position of the press-fit terminal coincides with the center position of the through-hole of the circuit board, A method for manufacturing a circuit connection device, comprising: an assembly device retraction step of retracting the connector assembly device when the tip of the press-fit terminal is inserted into the through-hole.

12. A circuit connection device comprising: a circuit board on which electronic components are mounted and which has through-holes; a connector equipped with external connection terminals; the connector comprising a plurality of press-fit terminals electrically connected to the through-holes of the circuit board and a resin binding portion for binding the plurality of press-fit terminals, wherein the resin binding portion has a tapered portion in a direction perpendicular to the arrangement direction of the press-fit terminals; Using a connector assembly device having a corrective groove for correcting the tip position of the press-fit terminal, A straightening groove fitting step in which the straightening groove of the connector assembly device is fitted to the resin binding portion before the press-fit terminal is inserted into the through-hole, A tip position correction step in which the resin binding portion is pressed in with the pressing surface of the connector assembly device, and the tip position of the press-fit terminal is corrected so that the tip position of the press-fit terminal and the center position of the through-hole coincide; A method for manufacturing a circuit connection device, comprising: an assembly device retraction step of retracting the connector assembly device when the tip of the press-fit terminal is inserted into the through-hole.

13. A rotating electric machine apparatus comprising a circuit connection device according to claim 1 or 2 for controlling the rotating electric machine and supplying power to the rotating electric machine.

14. A rotating electric machine apparatus comprising a rotating electric machine equipped with a circuit connection device manufactured by a manufacturing apparatus for circuit connection devices according to claim 11 or claim 12 for controlling the rotating electric machine and supplying power to the rotating electric machine.

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