Connection unit for rotating electric machinery

Abstract

To further facilitate wiring work in a rotating electric machine.SOLUTION: A rotating electric machine connection unit 50 for connecting a coil wire housed in a case of a rotating electric machine to an external wiring includes: a terminal module 52 including a coil wire pull-out bus bar 56 having a coil wire connection portion 56a and a pull-out connection portion 56b, and a terminal holding portion 53 that holds the coil wire pull-out bus bar; a bus bar terminal 78 including an inner protrusion 78a and an outer protrusion 78b; and a terminal block 70 including a bus bar holding portion 72 that holds the bus bar terminal. The bus bar holding portion is configured to be fixed to the case such that the inner protrusion is disposed inside the case and the outer protrusion is disposed outside the case, and the terminal module and the terminal block are integrated such that the bus bar holding portion can be disposed at the mounting position of the case with the coil wire connection portion connected to the coil wire.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a connection unit for a rotating electrical machine. [Background Art]

[0002] Patent Document 1 discloses a terminal block attached to a motor case. The terminal block electrically connects a bus bar of a motor and a bus bar of an inverter. [Prior Art Literature] [Patent Literature]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-186882 [Summary of Invention] [Problem to be Solved by the Invention]

[0004] A rotating electrical machine may sometimes have a terminal module incorporated therein for connecting coil wires to each other or drawing the coil wires out to the outside. It is desired to further facilitate wiring work in the rotating electrical machine.

[0005] Accordingly, an object of the present disclosure is to further facilitate wiring work in a rotating electrical machine. [Means for Solving the Problem]

[0006] The rotating electric machine connection unit of the present disclosure is a rotating electric machine connection unit for connecting a coil wire housed in the case of a rotating electric machine to an external wiring, comprising: a terminal module including a coil wire lead-out busbar having a coil wire connection portion and a lead-out connection portion, and a terminal holding portion for holding the coil wire lead-out busbar; a terminal block including a busbar terminal having an inner protrusion portion and an outer protrusion portion, and a busbar holding portion for holding the busbar terminal, wherein the busbar holding portion is configured to be fixable to the case such that the inner protrusion portion is located inside the case and the outer protrusion portion is located outside the case, and the terminal module and the terminal block are integrated such that the busbar holding portion can be positioned at the mounting position of the case when the coil wire connection portion is connected to the coil wire. [Effects of the Invention]

[0007] According to this disclosure, wiring work in rotating electric machines can be made even easier. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view showing an integrated electromechanical unit according to an embodiment. [Figure 2] Figure 2 is an exploded perspective view showing an integrated electromechanical unit. [Figure 3] Figure 3 is an exploded perspective view showing an integrated electromechanical unit. [Figure 4] Figure 4 is a perspective view showing a connection unit for a rotating electric machine. [Figure 5] Figure 5 is a perspective view showing a connection unit for a rotating electric machine. [Figure 6] This is a cross-sectional view taken along the line VI-VI in Figure 4. [Figure 7] Figure 7 is an exploded perspective view of a connection unit for a rotating electric machine. [Figure 8] Figure 8 is a perspective view showing the busbar for drawing out coil wires from the terminal module. [Figure 9] Figure 9 is a perspective view showing the laminated busbar section. [Figure 10]Figure 10 is an explanatory diagram showing an example of a manufacturing method for an integrated electromechanical unit. [Figure 11] Figure 11 is an explanatory diagram showing an example of a manufacturing method for an integrated electromechanical unit. [Figure 12] Figure 12 is an explanatory diagram showing an example of a manufacturing method for an integrated electromechanical unit. [Figure 13] Figure 13 is an explanatory diagram showing an example of a manufacturing method for an integrated electromechanical unit. [Modes for carrying out the invention]

[0009] [Description of Embodiments in this Disclosure] First, the embodiments of this disclosure will be listed and described.

[0010] The connection unit for rotating electric machines described herein is as follows:

[0011] (1) A connection unit for a rotating electric machine for connecting a coil wire housed in the case of the rotating electric machine to an external wiring, comprising: a terminal module including a coil wire lead-out busbar having a coil wire connection portion and a lead-out connection portion, and a terminal holding portion for holding the coil wire lead-out busbar; a terminal block including a busbar terminal having an inner protrusion portion and an outer protrusion portion, and a busbar holding portion for holding the busbar terminal, wherein the busbar holding portion is configured to be fixable to the case such that the inner protrusion portion is located inside the case and the outer protrusion portion is located outside the case, and the terminal module and the terminal block are integrated such that the busbar holding portion can be positioned at the mounting position of the case when the coil wire connection portion is connected to the coil wire.

[0012] According to this connection unit for a rotating electrical machine, the terminal module and the terminal block are integrated such that the busbar holding portion can be arranged at the mounting position of the case in a state where the coil wire connection portion is connected to the coil wire. Therefore, by connecting the coil wire connection portion to the coil wire and mounting the busbar holding portion to the case, the wiring for connecting the coil wire housed in the case of the rotating electrical machine to external wiring can be assembled to the rotating electrical machine. This enables easy wiring work in the rotating electrical machine.

[0013] (2) The connection unit for a rotating electrical machine according to (1), further comprising a laminated busbar portion that relay-connects the lead-out connection portion and the inner protruding portion, wherein the laminated busbar portion may have a configuration in which a plurality of thin busbars each having a thickness smaller than the total thickness of the laminated busbar portion are laminated.

[0014] As described above, when the lead-out connection portion and the inner protruding portion are relay-connected by the laminated busbar portion, tolerance absorption between the terminal module and the terminal block can be achieved by deformation of the laminated busbar portion.

[0015] (3) The connection unit for a rotating electrical machine according to (2), wherein an intermediate portion in the extending direction of the laminated busbar portion may be bent.

[0016] This facilitates tolerance absorption in a plurality of directions between the terminal module and the terminal block.

[0017] (4) The connection unit for a rotating electrical machine according to (3), wherein the laminated busbar portion includes a first relay connection portion connected to the lead-out connection portion, a second relay connection portion connected to the inner protruding portion in a posture along the extending direction of the first relay connection portion, and a relay intermediate portion interposed between the first relay connection portion and the second relay connection portion, wherein the relay intermediate portion may be connected to each of the first relay connection portion and the second relay connection portion via a bent portion, and extend along a direction intersecting each of the first relay connection portion and the second relay connection portion.

[0018] In this case, the first and second relay connection sections can be easily bent in the thickness direction and can be easily twisted around an axis along their extension direction. Furthermore, the intermediate relay section intersecting the first and second relay connection sections can also be easily bent in the thickness direction and can be easily twisted around an axis along its extension direction. In addition, the bent sections between the intermediate relay section and the first relay connection section, and between the intermediate relay section and the second relay connection section, can also be easily deformed to change their bending angles. This facilitates the absorption of tolerances in multiple directions between the terminal module and the terminal block.

[0019] (5) A rotating electric machine connection unit according to any one of (2) to (4), wherein the stacked busbar portion may be welded, solid-state bonded, or brazed to the outward connection portion and the inner protrusion portion, respectively.

[0020] This allows for a reduction in the size of the joint.

[0021] (6) A connecting unit for a rotating electric machine according to any one of (1) to (5), wherein the busbar holding portion may have a fixing portion in which a fastener insertion hole is formed that penetrates along the direction of the rotation axis of the rotating electric machine.

[0022] This allows the busbar holder to be attached to the case by mounting it in a direction along the axis of rotation. As a result, a connection unit for rotating electric machinery, in which the terminal block and terminal module are integrated, can be easily assembled to the case.

[0023] (7)(6) A connection unit for a rotating electric machine, wherein the busbar holding portion may be configured to be attachable to the case such that the outer protrusion is aligned with the direction of the rotation axis.

[0024] This allows the connection end of an external device to be connected to an external projection along the direction of the rotation axis. Compared to inserting the connection member of the external device from the outer circumference to the inner circumference of the case, it is easier to shorten the length of the connection member of the external device.

[0025] (8) A rotating electric machine connection unit according to any one of (1) to (7), wherein the terminal block includes an external signal connector having external signal terminals, and the external signal connector is located outside the case, connected to the external signal terminals, and further comprises signal wiring extending from the terminal block toward the inside of the case, with the busbar holding portion fixed to the case.

[0026] This allows the sensor signals inside the case to be output to the outside using the external signal connector and signal wiring.

[0027] (9)(8) A connection unit for a rotating electric machine, further comprising a speed sensor internal connection connector having a speed sensor internal connection terminal, wherein the speed sensor internal connection terminal is connected to the external signal terminal via the signal wiring, and the speed sensor internal connection connector is supported by the terminal module, facing the speed sensor side connector incorporated in the case along the direction of the rotation axis of the rotating electric machine, and allowing movement in a direction intersecting the rotation axis.

[0028] This allows the speed sensor connector and the internal speed sensor connector to be connected by assembling the speed sensor along the direction of the rotation axis. In this case, since the internal speed sensor connector is allowed to move in a direction intersecting the rotation axis, the tolerances of both connectors can be absorbed, and the two connectors can be easily connected.

[0029] (10)(8) or (9) is a connection unit for a rotating electric machine, wherein the terminal module has a temperature detection busbar connection portion that is heat-transferably connected to the coil wire, and a temperature sensor held by the terminal holding portion in a state in which the temperature of the temperature detection busbar connection portion can be detected, and the temperature sensor may be connected to the external signal terminal via the signal wiring.

[0030] This allows the temperature sensor and the configuration that outputs the temperature sensor signal to the outside to be assembled into the case when the terminal module and terminal block are assembled.

[0031] [Details of the embodiments of this disclosure] Specific examples of the rotating electric machine connection unit of this disclosure will be described below with reference to the drawings. However, this disclosure is not limited to these examples, and all modifications are intended to be included in the meaning and scope equivalent to the claims, as indicated by the claims.

[0032] [Embodiment] The following describes a connection unit for a rotating electric machine according to an embodiment. In this embodiment, an example in which the connection unit for a rotating electric machine is incorporated into a mechatronic unit is described.

[0033] <Overall Structure> For the sake of explanation, the overall configuration of the integrated electromechanical unit will be described. Figure 1 is a perspective view showing the integrated electromechanical unit 20. Figures 2 and 3 are exploded perspective views showing the integrated electromechanical unit 20.

[0034] The electromechanical unit 20 is a unit in which a rotating electric machine 40 and a control board 26 that controls the rotating electric machine 40 are integrated.

[0035] The rotating electric machine 40 is a rotating electric machine comprising a case 30, an armature 42, and a field 48. The rotating electric machine 40 may be an electric motor or a generator.

[0036] The case 30 comprises a bottomed cylindrical case body 32 and a lid 36. An armature 42, which serves as a stator, is housed inside the cylindrical case body 32. The field 48 is positioned inside the armature 42 as a rotor. The magnetic field generated by the armature 42 causes the field 48 to rotate, or the rotation of the field 48 causes the armature 42 to generate an electromotive force. A rotating shaft 49 is connected to the field 48, and the rotational driving force of the rotating electric machine 40 is output through the rotating shaft 49, and external rotational motion is input through the rotating shaft 49. The central axis of the field 48 and the rotating shaft 49 is the rotation axis X.

[0037] An expansion space forming portion 33 protrudes from a part of the circumferential direction of the end of the cylindrical case body 32 on the side of the opening 32h. The expansion space forming portion 33 is formed as an additional case shape that forms an expansion space opening to the cylindrical case body 32 side and to the same side as the opening 32h of the cylindrical case body 32, on a part of the circumferential direction of the end of the cylindrical case body 32 on the side of the opening 32h. In this embodiment, the expansion space forming portion 33 is formed in the shape of a rectangular parallelepiped box. The space inside the expansion space forming portion 33 is connected to the space inside the cylindrical case body 32. Furthermore, the space inside the expansion space forming portion 33 is connected to the same side as the opening 32h of the cylindrical case body 32.

[0038] The expanded space forming section 33 has a wall section 34 that closes the side opposite to the opening 33h, which is on the same side as the opening 32h. A through hole 34h is formed in the wall section 34. In this embodiment, the through hole 34h is formed as an elongated hole that is long in the direction intersecting the rotation axis X. The through hole 34h may be a round hole, an elliptical hole, or a square hole.

[0039] The lid portion 36 is formed in a plate shape that closes the opening 32h of the cylindrical case body 32. In this embodiment, the lid portion 36 also closes the opening 33h of the expanded space forming portion 33. For this reason, the lid portion 36 has a shape in which a rectangular plate-shaped portion is connected to a part of the circumferential direction of a disc-shaped portion. A peripheral wall 36W connected to the periphery of the openings 32h and 33h may be formed on the periphery of the lid portion 36. It is not essential that a single lid portion 36 closes both openings 32h and 33h. The lid portion 36 may be divided into a portion that closes the opening 32h and a portion that closes the opening 33h.

[0040] The lid portion 36 is attached to the cylindrical case body 32 and the expansion space forming portion 33 by screws or the like, so that the openings 32h and 33h are closed by the lid portion 36. The space enclosed by the cylindrical case body 32, the expansion space forming portion 33 and the lid portion 36 is the internal space of the rotating electric machine 40. This internal space is a watertight space relative to the external space.

[0041] A circuit board case 38 for housing the control board 26 is integrally formed with the cylindrical case body 32. For example, the cylindrical case body 32 and the circuit board case 38 are integrally formed by metal casting or machining.

[0042] The substrate case 38 is part of the outer circumference of the cylindrical case body 32 and forms a space for housing the control board 26 at a position adjacent to the expanded space forming portion 33 along the rotation axis X direction.

[0043] More specifically, the substrate case 38 has a pair of side wall portions 38a extending from both side edges of the wall portion 34 in the direction of the rotation axis X toward the opposite side of the opening 33h, and an outer wall portion 38b that closes the gap between the edges of the pair of side wall portions 38a that are opposite to the wall portion 34. The pair of side wall portions 38a and the outer wall portion 38b are connected to the outer circumference of the cylindrical case body 32. The space enclosed by the pair of side wall portions 38a, the outer wall portion 38b and the wall portion 34 is open on the side opposite to the cylindrical case body 32. As a result, a substrate housing space is formed that is open on the side opposite to the cylindrical case body 32, surrounded on all four sides by the pair of side wall portions 38a, the outer wall portion 38b and the wall portion 34, and closed at the bottom by the cylindrical case body 32. The outward-facing portion of the cylindrical case body 32 enclosed by the pair of side wall portions 38a and the outer wall portion 38b may be formed in a planar shape.

[0044] The opening 38h of the circuit board case 38 on the side opposite to the cylindrical case body 32 is closed by the circuit board case lid 39. By closing the opening 38h of the circuit board case 38 with the circuit board case lid 39, the circuit board housing space is sealed off from the outside.

[0045] It is not essential that the cylindrical case body 32 and the circuit board case 38 are integrally formed. For example, the circuit board case 38 may be attached to the cylindrical case body 32 by screws, welding, or other means.

[0046] The armature 42 housed within the case 30 includes a coil wire 46a. The coil wire 46a is a linear conductive member made of copper wire or the like. The coil wire 46a may be wound around the armature core.

[0047] The control board 26 housed within the circuit board case 38 is, for example, an inverter control board on which a circuit for driving and controlling a rotating electric machine 40 is formed. External busbar terminals 27 extend from the control board 26 as external wiring.

[0048] The rotating electric machine connection unit 50 connects the coil wire 46a inside the case 30 to the external busbar terminal 27, which serves as external wiring. In this embodiment, the internal space of the rotating electric machine 40 and the substrate housing space are separated by a wall 34. The rotating electric machine connection unit 50 electrically connects the coil wire 46a to the external busbar terminal 27 through a through hole 34h formed in the wall 34.

[0049] <Connection unit for rotating electrical machinery> Figures 4 and 5 are perspective views showing the connection unit 50 for the rotating electric machine. Figure 6 is a cross-sectional view taken along line VI-VI in Figure 4. In Figure 6, the case 30, coil wire 46a, and external busbar terminal 27 are shown by dashed lines. Figure 7 is an exploded perspective view of the connection unit 50 for the rotating electric machine.

[0050] As shown in Figures 2 to 7, the rotating electric machine connection unit 50 comprises a terminal module 52 and a terminal block 70.

[0051] The terminal module 52 includes a busbar 56 for leading out coil wires and a terminal holding section 53.

[0052] The coil wire lead-out busbar 56 is a conductive member made of metal or the like, and has a coil wire connection portion 56a and a lead-out connection portion 56b. The coil wire 46a is connected to the coil wire connection portion 56a. The lead-out connection portion 56b extends outward from the armature 42 and is electrically connected to the busbar terminal 78 of the terminal block 70.

[0053] The terminal holding portion 53 is a member formed of an insulating material such as resin, and holds the coil wire lead-out busbar 56. In this embodiment, the terminal module 52 has a plurality of coil wire lead-out busbars 56. The terminal holding portion 53 maintains a fixed positional relationship between the plurality of coil wire lead-out busbars 56, insulating them from each other. The terminal holding portion 53 also maintains the coil wire connection portion 56a in a position suitable for connection with the coil wire 46a to be connected, and maintains the lead-out connection portion 56b in a position suitable for connection with the laminated busbar portion 90 to be connected.

[0054] The terminal holding portion 53 may be fixed to the case 30. However, since the terminal module 52 is supported in a fixed position within the case 30 by the coil wire connection portion 56a being connected to the end of the coil wire 46a, the terminal holding portion 53 does not need to be fixed to the case 30.

[0055] The terminal block 70 includes busbar terminals 78 and busbar retaining parts 72.

[0056] The busbar terminal 78 has an inner projection 78a and an outer projection 78b. The inner projection 78a is the portion that protrudes from the busbar holding portion 72 toward the internal space of the rotating electric machine 40. The outer projection 78b is the portion that protrudes from the busbar holding portion 72 toward the outside of the rotating electric machine 40. Here, "outside" means outside relative to the internal space of the rotating electric machine 40. The substrate housing space is the space outside relative to the internal space of the rotating electric machine 40. In this embodiment, the outer projection 78b protrudes toward the substrate housing space. The inner projection 78a and the outer projection 78b are conductive parts of the busbar terminal 78 and are therefore electrically connected to each other.

[0057] The busbar holding portion 72 holds the busbar terminals 78. More specifically, the busbar holding portion 72 holds the busbar terminals 78 such that the inner projection 78a faces the internal space of the rotating electric machine 40 and the outer projection 78b faces outward. In this embodiment, the terminal block 70 has a plurality of busbar terminals 78. The busbar holding portion 72 maintains a fixed positional relationship between the plurality of busbar terminals 78, insulating them from one another.

[0058] The busbar retaining portion 72 is configured to be fixable to the case 30 such that the inner protrusion 78a is positioned inside the case 30 and the outer protrusion 78b is positioned outside the case 30. Here, the busbar retaining portion 72 is attached to the wall portion 34 of the case 30. The outer protrusion 78b extends outwards from the case 30, i.e., into the substrate housing space, through the through hole 34h in the wall portion 34. The inner protrusion 78a extends inwards from the opposite side of the outer protrusion 78b.

[0059] The terminal module 52 and the terminal block 70 are integrated so that the busbar holding portion 72 can be positioned at the mounting location on the case 30 with the coil wire connection portion 56a connected to the coil wire 46a. The mounting location here is on the inside of the rotating electric machine 40 relative to the through hole 34h in the wall portion 34, i.e., the front position. Here, the terminal module 52 and the terminal block 70 are integrated by the inner protrusion portion 78a being relay-connected to the lead-out connection portion 56b via a stacked busbar portion 90, which is an example of a relay connection portion. Here, "integrated" means that the terminal module 52 and the terminal block 70 are kept in a fixed positional relationship, and if one of them is moved, the other also moves in accordance with that movement. This allows, Terminal module 52 The terminal block 70 and the terminal block 70 can be easily assembled into the case 30 in the same work process.

[0060] In this embodiment, the inner protrusion 78a and the drawer connection portion 56b are connected via a laminated busbar portion 90. The presence of the laminated busbar portion 90 as an intermediate connection portion between the inner protrusion 78a and the drawer connection portion 56b is not essential. For example, the inner protrusion 78a may be extended to the drawer connection portion 56b and joined to the drawer connection portion 56b. Alternatively, for example, the drawer connection portion 56b may be extended to the inner protrusion 78a and joined to the inner protrusion 78a.

[0061] In this embodiment, it is assumed that the rotating electric machine 40 is a rotating electric machine that can be used as a three-phase AC motor. Therefore, the rotating electric machine 40 has three lead connection parts 56b, and the control board 26 also has three external busbar terminals 27. In order to connect these in a one-to-one relationship, the rotating electric machine connection unit 50 has three busbar terminals 78 and three stacked busbar parts 90.

[0062] In the following explanation, the side with the cover 36 may be referred to as the front side and the opposite side as the rear side in the direction along the rotation axis X of the rotating electric machine 40. Also, in the direction perpendicular to the rotation axis X, the side with the rotating electric machine 40 may be referred to as the bottom side and the side with the control board 26 may be referred to as the rear side. Upper In some cases, this may be the case. Furthermore, the left-right direction may be mentioned in relation to the up-down and front-back directions.

[0063] Let's explain the structure of each part in more detail.

[0064] <Terminal Module> Figure 8 is a perspective view showing the busbar 56 for leading out the coil wire of the terminal module 52. In Figure 8, the terminal holding portion 53 is indicated by a dashed line.

[0065] As shown in Figures 4 to 8, the terminal module 52 has three coil wire lead busbars 56 corresponding to the three phases.

[0066] The coil wire lead-out busbar 56 is formed by pressing a metal plate such as copper. The coil wire lead-out busbar 56 has a number of coil wire connection portions 56a corresponding to the number of coil wires 46a to be connected. In this embodiment, Coil wire lead-out busbar 56 It has multiple coil wire connection points 56a.

[0067] The terminal holding portion 53 has an insertion hole 53h into which the coil wire 46a is inserted. The end of the coil wire 46a extends along the direction of the rotation axis X, and the insertion hole 53h is a through hole that extends along the direction of extension of the end of the coil wire 46a. The coil wire connecting portion 56a extends either inside or outside the insertion hole 53h, along the direction of extension of the insertion hole 53h.

[0068] When the end of the coil wire 46a protruding from the end of the armature 42 is inserted into the insertion hole 53h, the coil wire 46a is positioned adjacent to the coil wire connection portion 56a, either inside or outside the insertion hole 53h. In this state, the end of the coil wire 46a and the coil wire connection portion 56a are joined by ultrasonic bonding or resistance welding, thereby electrically and mechanically joining them (see Figure 6).

[0069] The coil wire lead-out busbar 56 has an intermediate connection section 56c that relays and connects a plurality of coil wire connection sections 56a and lead-out connection sections 56b. The intermediate connection section 56c extends along the circumferential direction with the rotation axis X as the center of curvature.

[0070] The terminal holding portion 53 is positioned opposite the end of the armature 42 on the opening 32h side, along the direction of the rotation axis X. The terminal holding portion 53 extends along the circumferential direction with the rotation axis X as the center of curvature. The intermediate connection portion 56c is embedded within the terminal holding portion 53. Multiple coil wire connection portions 56a extend in a comb-like manner from the end or middle portion of the intermediate connection portion 56c and are arranged along the direction of the rotation axis X.

[0071] The pull-out connector 56b extends from the end or middle of the intermediate connector 56c so as to move away from the intermediate connector 56c. In this embodiment, the pull-out connector 56b extends outward from the end of the intermediate connector 56c and protrudes outward from the terminal holding portion 53. A long plate-like portion is formed at the end of the intermediate connector 56c along the direction of the rotation axis X. Therefore, each of the multiple coil wires 46a is connected to the corresponding coil wire connector 56a, and they are bundled together by the intermediate connector 56c and connected in common to the pull-out connector 56b.

[0072] The intermediate connection portions 56c of the three busbar terminals 78 corresponding to the three phases are held by the terminal holding portion 53 in an insulated state from each other. In this state, the multiple coil wire connection portions 56a are held in a position where they can contact the ends of the coil wires 46a to be connected. In addition, the three lead-out connection portions 56b are held outside the terminal holding portion 53 in a position where they can connect to the stacked busbar portion 90, which will be described later.

[0073] In this embodiment, the terminal module 52 is equipped with a connection busbar 58 for connecting the coil wire 46a within the rotating electric machine 40.

[0074] The busbar 58 for connection is formed by pressing a metal plate such as copper. The busbar 58 for connection has a plurality of coil wire connection parts 58a and an intermediate connection part 58c. The intermediate connection part 58c extends along the circumferential direction with the rotation axis X as the center of curvature. The plurality of coil wire connection parts 58a extend in a comb-like manner from the ends or middle parts of the intermediate connection part 58c and are arranged along the direction of the rotation axis X. The plurality of coil wire connection parts 58a are held in a position where they can contact the plurality of coil wires 46a to be connected. The coil wire connection parts 58a are arranged in the same way as the coil wire connection parts 56a, either inside or outside the insertion hole 53h, along the direction of extension of the insertion hole 53h. Then, with the coil wires 46a to be connected inserted into the insertion hole 53h, the coil wires 46a and the coil wire connection parts 56a come into contact and are joined by ultrasonic bonding or resistance welding. As a result, the multiple coil wires 46a to be connected are electrically connected via the intermediate connection part 58c.

[0075] The terminal module 52 is positioned adjacent to the armature 42 on the opening 32h side. In this state, each of the multiple coil wires 46a is inserted into its corresponding insertion hole 53h and joined to the coil wire connection portions 56a and 58a that extend along the insertion hole 53h. As a result, the terminal module 52 is held in a fixed position on the opening 32h side by the armature 42. The lead-out connection portion 56b is led out to the outer circumference of the terminal holding portion 53. Each of the multiple busbar terminals 78 of the terminal block 70 is electrically connected to the corresponding lead-out connection portion 56b via the multiple stacked busbar portions 90.

[0076] For example, the terminal holding portion 53 is molded using a part of the coil wire lead-out busbar 56 and a part of the connection busbar 58 as insert portions.

[0077] The extension connection portion may be extended to the opposite side of the armature in the direction of the rotation axis X relative to the terminal holding portion.

[0078] <Terminal block> As shown in Figures 4 to 7, the terminal block 70 includes busbar terminals 78 and busbar holding parts 72.

[0079] The busbar terminal 78 is formed by pressing a metal plate such as copper. In this embodiment, the busbar terminal 78 is formed in the shape of a rectangular plate extending in a straight line. The busbar terminal 78 penetrates the busbar holding portion 72. The portion of the busbar holding portion 72 that protrudes from one main surface of the busbar holding portion 72 is the inner protrusion 78a, and the portion that protrudes from the other main surface of the busbar holding portion 72 is the outer protrusion 78b. A screw insertion hole 78bh is formed in the outer protrusion 78b. A nut portion 48N is attached to the outer protrusion 78b.

[0080] The terminal block 70 has three busbar terminals 78 corresponding to three phases. The three busbar terminals 78 are held by the busbar holder 72 in parallel with a gap between them.

[0081] The busbar retaining portion 72 has a retaining base 73 and a sealing portion 77. The retaining base 73 is a component attached to the case 30. The retaining base 73 is assumed to be a more rigid portion than the sealing portion 77. The retaining base 73 is attached to the wall portion 34 of the case 30 so as to close the through hole 34h. The sealing portion 77 is an elastic member that is more flexible than the retaining base 73. With the retaining base 73 attached to the wall portion 34, the sealing portion 77 is interposed in a compressed state between the wall portion 34 and the retaining base 73. As a result, the sealing portion 77 closes the gap between the wall portion 34 and the retaining base 73 around the through hole 34h.

[0082] More specifically, the retaining base 73 comprises a base body 74 and a fixing portion 73a. The base body 74 is formed in a plate shape that extends larger than the through hole 34h, in this case, in an elongated plate shape. The base body 74 may have an annular projection surrounding the inner projection 78a and an annular groove for positioning the sealing portion 77.

[0083] The base body 74 is positioned so as to face the inner surface of the wall portion 34 from the opening 33h side. This causes the base body 74 to close the through hole 34h. In this state, the outer projection 78b of the base body 74, which protrudes from the outward-facing surface, extends through the through hole 34h into the substrate housing space. In this state, the outer projection 78b is aligned with the direction of the rotation axis X. Therefore, the external busbar terminal 27, which is aligned with the direction of the rotation axis X, can be easily connected to the outer projection 78b. In addition, the inner projection 78a of the base body 74, which protrudes from the inward-facing surface, protrudes toward the opening 33h. The inner projection 78a is also aligned with the direction of the rotation axis X.

[0084] The fixing portion 73a is formed on the outer circumference of the base body 74. The fixing portion 73a has a fastener insertion hole 73ah that penetrates along the direction of the rotation axis X. In this embodiment, a pair of fixing portions 73a are formed so as to protrude outward from both edges on the short side of the base body 74. Fastener insertion holes 73ah are formed at each of the upper and lower corners of the fixing portion 73a. A screw S, which is an example of a fastener, is inserted into the fastener insertion hole 73ah and screwed into a screw hole formed in the wall portion 34. This fixes the fixing portion 73a to the wall portion 34. The fastener may be a rivet.

[0085] The seal portion 77 is a water-stopping component that is pressed against the wall portion 34 of the case 30 along the direction of the rotation axis X at a position surrounding the outer protrusions 78b. In this embodiment, the seal portion 77 is formed in an annular, more specifically, elongated rectangular annular shape. The seal portion 77 is mounted on the outward-facing surface of the base body 74 at a position surrounding the three outer protrusions 78b. For example, a mounting piece 77a extending inward may be formed on the seal portion 77, and a positioning pin formed on the base body 74 may be inserted into a positioning hole formed on the mounting piece 77a to position and hold the seal portion 77 on the base body 74.

[0086] The sealing portion 77 is formed in an annular shape larger than the through hole 34h, and the sealing portion 77 is interposed between the wall portion 34 and the base body 74 on the outer circumference of the through hole 34h. When the base body 74 is pressed toward the inward surface of the wall portion 34 by tightening the screw S, the sealing portion 77 is interposed in a compressed state between the wall portion 34 and the base body 74, sealing the space between the case 30 and the terminal block 70 on the outer circumference of the through hole 34h.

[0087] The retaining body may have an insertion portion that is inserted into a through hole, and a sealing portion may be interposed between the outer circumference of the insertion portion and the inner circumference of the through hole to stop water from entering between the case 30 and the terminal block 70.

[0088] With the terminal block 70 attached to the wall 34, the terminal block 70 is positioned above the terminal module 52.

[0089] <Laminated busbar section> Figure 9 is a perspective view showing the stacked busbar section 90. In Figure 9, the inner protrusion 78a and the lead-out connection section 56b are indicated by dashed lines.

[0090] The laminated busbar section 90 is an example of a relay busbar section that electrically relays the inner protrusion 78a and the lead-out connection section 56b. The relay busbar section may also be a single-layer busbar.

[0091] The laminated busbar section 90 is constructed by laminating multiple (four in this case) thin busbars 92. The thin busbars 92 are formed to have a thickness smaller than the total thickness of the laminated busbar section 90. In the laminated busbar section 90, deformation can occur by rubbing against adjacent thin busbars 92. For this reason, it is assumed that deformation in the thickness direction (the lamination direction of the thin busbars 92) and torsional deformation of the laminated busbar section 90 are easier compared to a single-layer busbar having the same thickness or cross-sectional area as the laminated busbar section 90.

[0092] Multiple thin busbars 92 may be joined to a portion of the laminated busbar section 90 in the longitudinal direction, for example, at both ends, by ultrasonic bonding or resistance welding, and maintained in a laminated state.

[0093] The middle portion of the laminated busbar section 90 in the direction of extension is curved. When the middle portion of the laminated busbar section 90 in the direction of extension is curved, the outer portions on both sides of the curved section can be easily bent in different directions. In addition, the curved portion of the laminated busbar section 90 can be easily deformed to change the angle of bending.

[0094] In this embodiment, the laminated busbar section 90 includes a first intermediate connection section 90a connected to the outward connection section 56b, a second intermediate connection section 90b connected to the inner projection section 78a, and an intermediate intermediate section 90c interposed between the first intermediate connection section 90a and the second intermediate connection section 90b. The first intermediate connection section 90a and the second intermediate connection section 90b are aligned in the same direction, in this case, in the same direction as the rotation axis X. The intermediate intermediate section 90c is connected to the first intermediate connection section 90a and the second intermediate connection section 90b, respectively, via bent sections 90v1 and 90v2. In this embodiment, the intermediate intermediate section 90c is aligned in a direction that intersects (in this case, perpendicular) with respect to the first intermediate connection section 90a and the second intermediate connection section 90b. The bent sections 90v1 and 90v2 may be portions that bend at a right angle, or portions that bend while forming a curve. In other words, the laminated busbar section 90 as a whole is formed in a generally U-shape.

[0095] The first relay connection section 90a and the second relay connection section 90b can be easily deformed in the vertical direction, which is their thickness direction (see arrow A1 in Figure 9). In addition, the first relay connection section 90a and the second relay connection section 90b can be easily twisted around an axis along the front-to-back direction, which is their extension direction (see arrow A2 in Figure 9). The intermediate relay section 90c can be easily deformed in the front-to-back direction, which is its thickness direction (see arrow A3 in Figure 9). In addition, the intermediate relay section 90c can be easily twisted around an axis along the vertical direction, which is its extension direction (see arrow A4 in Figure 9). Furthermore, the laminated busbar section 90 can be easily deformed to change the bending angle between the first relay connection section 90a and the intermediate relay section 90c, and the bending angle between the second relay connection section 90b and the intermediate relay section 90c (see arrow A5 in Figure 9).

[0096] Therefore, even if the positions of the inner protrusion 78a and the pull-out connection 56b, which are the connection points of the laminated busbar section 90, are misaligned in any of the three directions (up / down, front / back, or left / right), the laminated busbar section 90 can easily accommodate the misalignment in these three directions by deforming. Furthermore, even if the relative orientation of the inner protrusion 78a and the pull-out connection 56b is misaligned around any of the three axes (up / down, front / back, or left / right), the laminated busbar section 90 can easily accommodate the misalignment around these three axes by deforming.

[0097] The laminated busbar section 90 may be welded, solid-state bonded, or brazed to the lead-out connection section 56b and the inner projection section 78a, respectively. A welded state means that the objects to be joined are melted and joined, for example, by resistance welding or laser welding. A solid-state bonded state means that the objects to be joined are joined while maintaining a solid state, for example, by ultrasonic bonding or diffusion bonding. A brazed state means that the objects are joined by melting solder or other brazing material. In any case, the laminated busbar section 90 is joined to the lead-out connection section 56b and the inner projection section 78a, respectively, without using fasteners such as screws or rivets.

[0098] In this embodiment, the first relay connection portion 90a is joined to the outer peripheral side surface of the extension connection portion 56b, and the second relay connection portion 90b is joined to the outer peripheral side surface of the inner projection portion 78a.

[0099] However, the laminated busbar section 90 may be connected to the drawer connection section 56b and the inner projection section 78a, respectively, by fasteners such as screws or rivets. Furthermore, the portion of the laminated busbar section 90 that extends integrally from the drawer connection section 56b or the inner projection section 78a may be formed by skiving or the like.

[0100] <Configuration of wiring for sensors> Sensors 100 and 110 for detecting the state of the rotating electric machine 40 may be incorporated inside the rotating electric machine 40. An example of a configuration for outputting the signals from these sensors 100 and 110 to the outside will be described.

[0101] The rotating electric machine 40 is equipped with a speed sensor 100. The speed sensor 100 is a sensor that detects the rotational speed of the field 48, which acts as a rotor, by detecting the rotation angle of the field 48. The speed sensor 100 may also be a sensor called a resolver.

[0102] The speed sensor 100 has an annular body portion 102, a connector support portion 104 that extends outward from a part of the circumferential direction of the annular body portion 102, and a speed sensor side connector 106 supported at the tip of the connector support portion 104 (see Figures 2 and 3). The annular body portion 102 has, for example, a section where a coil wire is wound around it arranged in an annular shape. The current excited by the coil wire as the field 48 rotates is output through the speed sensor side connector 106. Note that the speed sensor 100 is not required to have the above configuration, and a speed sensor using an optical sensor, magnetic sensor, etc. may also be used.

[0103] The annular body portion 102 is attached to the inside of the lid portion 36. For example, with the annular body portion 102 positioned on the inner surface of the lid portion 36, the sensor cover 108 covers the annular body portion 102 from the opposite side of the lid portion 36 (see Figures 2 and 3). In this state, the sensor cover 108 is fixed to the lid portion 36 by screws or the like on the outer circumference side of the annular body portion 102. This attaches the speed sensor 100 to the lid portion 36. The speed sensor 100 may also be directly attached to the lid portion 36 by screws or the like.

[0104] The connector support portion 104 extends outward from the annular main body portion 102, and the speed sensor side connector 106 at the tip of the connector support portion 104 is located on the outer circumference of the sensor cover 108. Here, the speed sensor side connector 106 has a shape that is elongated in the tangential direction of a circle centered on the rotation axis X in a plane perpendicular to the rotation axis X. The speed sensor side connector 106 faces backward along the direction of the rotation axis X, and the speed sensor side connector 106 and the speed sensor internal connection connector 60, which will be described later, face each other along the direction of the rotation axis X and are connected to each other.

[0105] The rotating electric machine 40 is also equipped with a temperature sensor 110 (see Figures 4, 7, and 8). The temperature sensor 110 is a sensor that detects the temperature inside the rotating electric machine 40, for example, the temperature of the coil wire 46a.

[0106] The temperature sensor 110 is a component of the terminal module 52. That is, the terminal module 52 includes the temperature sensor 110. In this embodiment, the terminal module 52 further includes a temperature detection busbar connection portion 58d. The temperature detection busbar connection portion 58d is a portion that is heat-transferably connected to the coil wire 46a. Heat-transferably connected to the coil wire 46a means that the temperature change of the coil wire 46a is heat-transferably connected to the extent that the temperature sensor 110 can detect it. In this embodiment, the temperature detection busbar connection portion 58d extends from the connection busbar 58. For example, it is assumed that the temperature detection busbar connection portion 58d and the other parts of the connection busbar 58 are integrally formed by press-forming a single metal plate. The end of the temperature detection busbar connection portion 58d is crimped and deformed to hold the temperature sensor 110. As a result, the temperature sensor 110 is held by the connection busbar 58. Furthermore, the connection busbar 58 is expected to be made of a metal with excellent heat conductivity, such as copper or a copper alloy. As a result, the heat from the coil wire 46a is easily transferred to the temperature sensor 110 via the connection busbar 58. This allows the temperature sensor 110 to easily detect the temperature of the coil wire 46a. The temperature detection busbar connection portion may be integrally formed with the coil wire lead-out busbar 56, or it may be formed separately on a busbar connected to the coil wire, apart from the coil wire lead-out busbar 56 and the connection busbar 58.

[0107] The terminal holding portion 53 may be molded using a mold with at least a part of the temperature detection busbar connection portion 58d and the temperature sensor 110 as insert portions. This makes it easier for the temperature sensor 110 to be held in a fixed position relative to the temperature detection busbar connection portion 58d, and stabilizes the heat conduction state.

[0108] The detection signals from the speed sensor 100 and the temperature sensor 110 are supplied to the control board 26. This allows the control board 26 to control the rotating electric machine 40 based on the detection signals from the speed sensor 100 and the temperature sensor 110.

[0109] To output the signals from the speed sensor 100 and the temperature sensor 110 to the outside, the terminal block 70 has an external signal connector 80 having external signal terminals 81a and 81b (see Figures 4, 5, and 7).

[0110] The external signal connector 80 is a connector to which the control board-side connector connected to the control board 26 is connected. The external signal connector 80 is, for example, a portion that protrudes toward the board housing space from one end in the extending direction of the retaining base 73. The external signal connector 80 has an opening into which the control board-side connector is inserted. The opening may be in any direction, but in this embodiment, it is open toward the top. External signal terminals 81a and 81b protrude from the bottom of the external signal connector 80 (partially shown in Figure 7). For example, external signal terminal 81a is a terminal for the speed sensor 100, and external signal terminal 81b is a terminal for the temperature sensor 110.

[0111] With the busbar holder 72 fixed to the wall portion 34 of the case 30, the external signal connector 80 is located outside the case 30, in this case, within the board housing space, via the through hole 34h. When the control board side connector is connected to the external signal connector 80, the external signal terminals 81a and 81b are connected to the external signal wiring connected to the control board 26 via the external signal connector 80.

[0112] The rotating electric machine connection unit 50 is electrically connected to the external signal terminals 81a and 81b and includes signal wiring that extends from the terminal block 70 into the case 30. The signal wiring will be described separately as signal wiring for the speed sensor 100 and signal wiring for the temperature sensor 110.

[0113] The rotating electric machine connection unit 50 includes a speed sensor internal connection connector 60. The speed sensor internal connection connector 60 has speed sensor internal connection terminals 61 that are connected to the terminals of the speed sensor side connector 106 (see Figure 4). For example, the speed sensor internal connection connector 60 has a shape that has an opening into which the speed sensor side connector 106 is inserted, and the speed sensor internal connection terminals 61 protrude from its bottom.

[0114] The internal speed sensor connector 60 is supported by the terminal module 52, facing the speed sensor side connector 106 along the direction of the rotation axis X, and allowing movement in a direction intersecting the rotation axis X.

[0115] More specifically, the speed sensor internal connection connector 60 is supported by a connector support portion 54 located at one end of the terminal holding portion 53. The connector support portion 54 is positioned to face the speed sensor side connector 106. The connector support portion 54 has a box-shaped connector receiving portion 54R that opens to the front. The inner wall surface of the connector receiving portion 54R is larger than the outer surface surface of the speed sensor internal connection connector 60. Therefore, the connector receiving portion 54R supports the speed sensor internal connection connector 60 in a state that allows movement in a direction perpendicular to the rotation axis X. The bottom surface of the connector receiving portion 54R is a support surface that receives the back surface of the speed sensor internal connection connector 60, and the speed sensor internal connection connector 60 can be positioned on the opposite side from the speed sensor side connector 106. A wire insertion groove is formed behind the bottom surface of the connector receiving portion 54R, through which a wire 62 extending from the speed sensor internal connection connector 60 can be inserted. By moving freely within the wire insertion groove through which the wire 62 can be inserted, the speed sensor internal connection connector 60 is allowed to move in a direction perpendicular to the rotation axis X while being supported by the connector receiving portion 54R.

[0116] The internal connection terminal 61 of the speed sensor and the temperature sensor 110 are electrically connected to the external signal terminal 81a via signal wiring. In this embodiment, the internal connection terminal 61 of the speed sensor and the temperature sensor 110 are electrically connected to the external signal terminals 81a and 81b via signal wiring such as electric wires 62 and 63, an internal relay connector 68, and an internal signal connector 82.

[0117] More specifically, an internal signal connector 82 is formed in the portion of the retaining base 73 that faces the space inside the rotating electric machine 40. The internal signal connector 82 is formed in a shape that opens into the rotating electric machine 40. Internal signal terminals 82a and 82b protrude from the bottom of the internal signal connector 82 (partially shown in Figure 7). Through wiring inside the retaining base 73, the internal signal terminal 82a is electrically connected to the external signal terminal 81a, and the internal signal terminal 82b is electrically connected to the external signal terminal 81b. For example, a terminal-integrated wiring including the internal signal terminal 82a, the external signal terminal 81a, and the wiring connecting them may be integrally formed by press working on a metal plate, and a terminal-integrated wiring including the internal signal terminal 82b, the external signal terminal 81b, and the wiring connecting them may be integrally formed by press working on a metal plate. In this case, the retaining base 73 may be molded using the intermediate portion of the terminal-integrated wiring as an insert portion.

[0118] An internal relay connector 68 is connected to the internal signal connector 82 described above. The internal relay connector 68 is a connector having internal relay terminals that are connected to the internal signal terminals 82a and 82b. Internal signal terminal 82a is electrically connected to the speed sensor internal connection terminal 61 via wire 62, which is an example of wiring. Also, internal signal terminal 82b is electrically connected to the temperature sensor 110 via wire 63, which is an example of wiring.

[0119] <Examples of manufactured electromechanical units> An example of a manufacturing method for the electromechanical integrated unit 20 will be described.

[0120] First, a rotating electric machine connection unit 50 is prepared, which integrates a terminal module 52 and a terminal block 70. The rotating electric machine connection unit 50 is equipped with an internal relay connector 68, electric wires 62 and 63 for signal wiring, and a temperature sensor 110 is also attached. The terminal module 52 is attached to the end of the coil wire 46a of the armature 42 (see Figure 10). That is, the end of the coil wire 46a that protrudes from the front of the armature 42 is inserted into the insertion hole 53h of the terminal module 52, and the coil wire 46a is joined to the coil wire connection parts 56a and 58a.

[0121] Then, the armature 42 is inserted into the cylindrical case body 32 of the case 30 through the opening 32h. As the terminal module 52 and the terminal block 70 are integrated, the terminal block 70 is positioned on the inner surface of the wall portion 34. In this state, the screw S is passed through the fastener insertion hole 73ah of the fixing portion 73a and screwed into the screw hole of the wall portion 34. This attaches the terminal block 70 to the case 30.

[0122] Next, as shown in Figure 11, the speed sensor 100 and the sensor cover 108 are attached to the lid 36. The speed sensor side connector 106 of the speed sensor 100 is exposed on the inside of the lid 36, facing the rear. The lid 36 is moved along the direction of the rotation axis X and attached to the opening of the cylindrical case body 32 with screws or the like.

[0123] At this time, the terminal module 52 is held inside the opening 32h by the armature 42. The speed sensor internal connection connector 60 is held by the connector support portion 54 of the terminal module 52. When the lid portion 36 is moved toward the opening of the cylindrical case body 32, the speed sensor side connector 106 is pushed toward the speed sensor internal connection connector 60 along the direction of the rotation axis X. As a result, the speed sensor side connector 106 is connected to the speed sensor internal connection connector 60. At this time, it is assumed that the speed sensor side connector 106 and the speed sensor internal connection connector 60 are misaligned in a direction perpendicular to the rotation axis X.

[0124] In this case, as shown in Figure 12, the internal speed sensor connector 60 can move in a direction perpendicular to the rotation axis X while its movement backward is restricted. Therefore, the internal speed sensor connector 60 can move in a direction perpendicular to the rotation axis X to align with the position of the speed sensor side connector 106. As a result, the two connectors 106 and 60 can be connected while absorbing any misalignment between the speed sensor side connector 106 and the internal speed sensor connector 60.

[0125] With the above assembly completed, the outer protrusion 78b and the outer signal connector 80 protrude into the board case 38 (see Figure 13). The control board 26 is housed in the board case 38 through the opening 38h. At this time, the outer busbar terminal 27 is placed on top of the outer protrusion 78b, and the outer busbar terminal 27 and the outer protrusion 78b are connected by screws or the like. In addition, the connectors connected to the ends of the wiring extending from the control board 26 are connected to the outer signal connector 80.

[0126] After this, the lid portion 39 for the circuit board case is fixed to the circuit board case 38 by screws or the like so that it closes the opening 38h.

[0127] <Effects, etc.> According to this rotating electric machine connection unit 50, the terminal module 52 and the terminal block 70 are integrated so that the busbar holding part 72 can be positioned at the mounting location on the case 30 while the coil wire connection part 56a is connected to the coil wire 46a. Therefore, by connecting the coil wire connection part 56a to the coil wire 46a and attaching the busbar holding part 72 to the case 30, the wiring for connecting the coil wire 46a housed in the case 30 to the external busbar terminal 27 can be assembled to the rotating electric machine 40. This makes wiring work in the rotating electric machine 40 easier.

[0128] Furthermore, the lead-out connection portion 56b and the inner protrusion portion 78a are relay-connected by the laminated busbar portion 90. Compared to a single-layer busbar structure, the laminated busbar portion 90 can be easily deformed in the thickness direction and the torsion direction. Therefore, the deformation of the laminated busbar portion 90 can absorb tolerances between the terminal module 52 and the terminal block 70.

[0129] Furthermore, if the extended intermediate portion of the laminated busbar section 90 is bent, the outer portions on both sides of the bent section can be easily bent in different directions, and can also be easily deformed to change the angle of the bend. This makes it easy to absorb tolerances in multiple directions between the terminal module 52 and the terminal block 70.

[0130] Furthermore, the laminated busbar section 90 includes a first relay connection section 90a, a second relay connection section 90b, and a relay intermediate section 90c interposed between them. The relay intermediate section 90c is connected to the first relay connection section 90a and the second relay connection section 90b, respectively, via bent sections 90v1 and 90v2, and is aligned in a direction intersecting the first relay connection section 90a and the second relay connection section 90b, respectively.

[0131] Therefore, the first relay connection section 90a, the second relay connection section 90b, and the intermediate relay section 90c can each be easily bent in the thickness direction and easily twisted. Furthermore, the bent sections 90v1 and 90v2 can also be easily deformed to change the bending angle. This makes it easier to absorb tolerances in multiple directions between the terminal module 52 and the terminal block 70.

[0132] Furthermore, since the laminated busbar section 90 is welded, solid-state bonded, or brazed to the drawer connection section 56b and the inner protrusion section 78a, the joint can be made smaller compared to when they are connected via fasteners such as screws.

[0133] Furthermore, the laminated busbar section 90 can be welded, solid-state bonded, or brazed to the drawer connection section 56b and the inner projection section 78a as a connecting unit 50 for a rotating electric machine, which can then be provided for assembly of the rotating electric machine 40. This eliminates the need to fasten the laminated busbar section 90 to the drawer connection section 56b or the inner projection section 78a during assembly of the rotating electric machine 40, thereby reducing the assembly man-hours for the rotating electric machine 40.

[0134] Furthermore, since the busbar holder 72 has a fixing portion 73a with a fastener insertion hole 73ah that penetrates along the direction of the rotation axis X, the busbar holder 72 can be attached to the case 30 by mounting work in the direction along the rotation axis X. This allows the rotating electric machine connection unit 50 to be easily assembled to the case 30.

[0135] Furthermore, the configuration in which the busbar holding portion 72 has a fixing portion 73a having a fastener insertion hole 73ah that penetrates along the direction of the rotation axis X, that is, the busbar holding portion 72 can be attached to the case 30 by mounting work in the direction along the rotation axis X, is applicable to the configuration of the rotating electric machine 40 even in a configuration in which the terminal block 70 and the terminal module 52 are not integrated. In this case as well, the terminal block 70 can be easily assembled to the case 30 from inside the rotating electric machine 40. In addition, the connection work between the terminal block 70 and the terminal module 52 inside the rotating electric machine 40 becomes easier.

[0136] Therefore, this disclosure discloses a configuration for mounting a terminal block 70 having busbar terminals 78 to a case 30 from the inside of a rotating electric machine 40 along the direction of the rotation axis X. Regardless of whether the terminal block 70 and the terminal module 52 are integrated or not, the disclosure discloses a configuration in which the busbar holding portion 72 has a fixing portion 73a having a fastener insertion hole 73ah that penetrates along the direction of the rotation axis X.

[0137] Furthermore, the busbar holding portion 72 is configured to be attachable to the case 30 such that the outer protrusion 78b is aligned with the direction of the rotation axis X. Therefore, the external busbar terminal 27 of the control board 26 can be connected to the outer protrusion 78b which is aligned with the direction of the rotation axis X. Compared to the case where the external busbar terminal of the control device extends from the outer circumference to the inner circumference of the case, it is easier to shorten the length of the external busbar terminal 27.

[0138] Furthermore, the terminal block 70 includes an external signal connector 80 having external signal terminals 81a and 81b, and signal wiring such as an internal relay connector 68, an internal signal connector 82, and electric wires 62 and 63 extend from the external signal terminals 81a and 81b into the case 30. Therefore, by assembling this rotating electric machine connection unit 50 to the rotating electric machine 40, wiring for outputting signals from sensors 100 and 110 inside the case 30 to the outside can be easily assembled. In addition, it becomes unnecessary to provide a separate watertight connector for signal output.

[0139] Furthermore, the internal speed sensor connector 60 is supported by the terminal module 52, facing the speed sensor side connector 106 inside the case 30 along the direction of the rotation axis X, and allowing movement in a direction intersecting the rotation axis X. Therefore, by assembling the speed sensor 100 along the direction of the rotation axis X, the speed sensor side connector 106 and the internal speed sensor connector 60 can be easily connected. At this time, since the internal speed sensor connector 60 can move in a direction perpendicular to the rotation axis X to match the position of the speed sensor side connector 106 inside the case 30, the tolerances of both connectors 60 and 106 can be absorbed, and both connectors 60 and 106 can be easily connected.

[0140] Furthermore, the terminal module 52 has a temperature detection busbar connection section 58d that is heat-transferable and connected to the coil wire 46a, and a temperature sensor 110 that is held by the terminal module 52 in a state in which the temperature of the temperature detection busbar connection section 58d can be detected. The temperature sensor 110 is connected to the external signal terminal 81b of the external signal connector 80 via signal wiring such as the electric wire 63, the internal signal connector 82, and the internal relay connector 68. Therefore, when assembling the terminal module 52 and the terminal block 70, the temperature sensor 110 and the configuration that outputs the signal of the temperature sensor 110 to the outside can be easily assembled into the case 30.

[0141] Furthermore, the configurations described in the above embodiments and each of the modified examples can be combined as appropriate, as long as they do not contradict each other. [Explanation of Symbols]

[0142] 20. Integrated electromechanical unit 26 Control board 27 External busbar terminal (external wiring) 30 cases 32 Tube Case Body 32h opening 33 Expanded space forming section 33h opening 34 Wall 34h through hole 36 Lid 36W peripheral wall 38 Circuit board case 38a Side wall part 38b Exterior wall 38h opening 39 Cover for circuit board case 40 Rotating Electric Machines 42 Armature 46a Coil wire 48 Field 48N Nut section 49 Rotating shaft 50 Rotary Electric Machine Connection Unit 52 Terminal Modules 53 Terminal holding section 53h Insertion hole 54 Connector support section 54R Connector receiver 56 Busbar for coil wire output 56a Coil wire connection 56b Drawer connection section 56c Intermediate connection section 58 Busbar for wiring 58a Coil wire connection 58c Intermediate connection section 58d Temperature detection busbar connection 60 Speed ​​sensor internal connection connector 61 Speed ​​sensor internal connection terminal 62, 63 Electric wire (signal wiring) 68 Internal relay connector (signal wiring) 70 Terminal block 72 Busbar holding part 73 Retaining base 73a Fixed part 73ah Fastener insertion hole 74 Base Unit 77 Seal part 77a Mounting piece 78 Busbar terminals 78a Inner protrusion 78b Outer protrusion 78bh screw insertion hole 80 External signal connector 81a, 81b Outer signal terminal 82 Internal signal connector 82a, 82b Inner signal terminal (signal wiring) 90 Laminated busbar section 90a First relay connection section 90b Second relay connection section 90c relay intermediate section 90v1 Bending section 90v2 Bending section 92 Thin Bass 100 Speed ​​Sensor 102 Annular main body 104 Connector support section 106 Speed ​​sensor side connector 108 Sensor Cover 110 Temperature Sensor S screw (fastener) X rotation axis

Claims

1. A connection unit for a rotating electric machine, for connecting coil wires housed inside the case of the rotating electric machine to external wiring, A terminal module including a coil wire lead-out busbar having a coil wire connection section and a lead-out connection section, and a terminal holding section for holding the coil wire lead-out busbar, A terminal block including a busbar terminal having an inner protrusion and an outer protrusion, and a busbar holding portion for holding the busbar terminal, Equipped with, The busbar holding portion is configured to be fixable to the case such that the inner protrusion is positioned inside the case and the outer protrusion is positioned outside the case. The terminal module and the terminal block are integrated so that the busbar holding portion can be positioned at the mounting location of the case while the coil wire connection portion is connected to the coil wire. The system further comprises a stacked busbar section that relays the aforementioned drawer connection section and the aforementioned inner protrusion section, The laminated busbar section has a configuration in which multiple thin busbars, each with a thickness less than the total thickness of the laminated busbar section, are laminated together. A connecting unit for a rotating electric machine, wherein the laminated busbar portion is welded, solid-state bonded, or brazed to the drawer connection portion and the inner protrusion portion, respectively.

2. A connection unit for a rotating electric machine according to Claim 1, A connecting unit for a rotating electric machine, wherein the intermediate portion of the laminated busbar section in the direction of extension is bent.

3. A connection unit for a rotating electric machine according to Claim 2, The stacked busbar portion includes a first relay connection portion connected to the lead-out connection portion, a second relay connection portion connected to the inner protrusion portion in a orientation along the extending direction of the first relay connection portion, and a relay intermediate portion interposed between the first relay connection portion and the second relay connection portion. The aforementioned intermediate relay section is connected to the first relay connection section and the second relay connection section via a bent section and is oriented in a direction intersecting the first relay connection section and the second relay connection section, respectively, in a connection unit for a rotating electric machine.

4. A connecting unit for a rotating electric machine according to any one of claims 1 to 3, The busbar holding portion has a fixing portion in which a fastener insertion hole is formed that penetrates along the direction of the rotation axis of the rotating electric machine, A connecting unit for a rotating electric machine, wherein a fastener for fixing the fixing part to the case is inserted into the fastener insertion hole.

5. A connection unit for a rotating electric machine according to Claim 4, A connection unit for a rotating electric machine, wherein the busbar holding portion is configured to be attachable to the case such that the outer protrusion is aligned with the direction of the rotation axis.

6. A connecting unit for a rotating electric machine according to any one of claims 1 to 3, The terminal block includes an external signal connector having external signal terminals, With the busbar retaining portion fixed to the case, the external signal connector is positioned outside the case. A connection unit for a rotating electric machine, further comprising signal wiring connected to the external signal terminals and extending from the terminal block toward the inside of the case.

7. A connection unit for a rotating electric machine according to claim 6, The speed sensor internal connection connector further includes a speed sensor internal connection terminal, The internal connection terminal of the speed sensor is connected to the external signal terminal via the signal wiring. A connection unit for a rotating electric machine, wherein the internal connection connector of the speed sensor is supported by the terminal module, facing the speed sensor-side connector incorporated in the case along the direction of the rotation axis of the rotating electric machine, and allowing movement in a direction intersecting the rotation axis.

8. A connection unit for a rotating electric machine according to claim 6, The terminal module includes a temperature detection busbar connection section that is heat-transferable to the coil wire, and a temperature sensor held by the terminal holding section in a state in which the temperature of the temperature detection busbar connection section can be detected. A connection unit for a rotating electric machine, wherein the temperature sensor is connected to the external signal terminal via the signal wiring.

Images