Terminal module for rotary electric machine

Abstract

To provide a terminal module capable of reducing vibration propagated from a rotary electric machine by a simple configuration.SOLUTION: A terminal module 100 electrically connects between a stator configuring a rotary electric machine and a terminal base 80. The terminal module 100 comprises a plurality of bus bars 10, 20, 30, and 40, and a holding member 50 covering the plurality of bus bars 10, 20, 30, and 40. Each of the plurality of bus bars 10, 20, and 30 has: a long extension part 13, 23, 33 located between a first end part 11, 21, 31 and a second end part 12, 22, 32 and extended in a first direction X; and an intermediate part located between the extension parts 13, 23, 33 and the second end parts 12, 22, 32. The extension parts 13, 23, and 33 are configured so as to be able to reduce vibration propagated from the stator toward the terminal base 80.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a terminal module for a rotating electric machine. [Background technology]

[0002] Patent Document 1 discloses a bus bar that electrically connects an electric motor and a power supply circuit that supplies power to the electric motor. This bus bar has a terminal portion on one end that is attached to a terminal block of the power supply circuit, a terminal portion on the other end that is attached to a stator terminal of the electric motor, and a main body that is joined to both terminal portions and electrically connects the terminal portions together.

[0003] The main body is made of a flexible conductor. With such a bus bar, vibrations transmitted from the electric motor are absorbed by the flexible main body portion. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-9781 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in a terminal module for a rotating electric machine equipped with such a bus bar, the main body and terminal portions of the bus bar are provided separately, which increases the number of parts and requires effort to join the main body and terminal portions.

[0006] An object of the present disclosure is to provide a terminal module for a rotating electric machine that can reduce vibrations transmitted from the rotating electric machine with a simple configuration. [Means for solving the problem]

[0007] The terminal module for a rotating electric machine disclosed herein is a terminal module for a rotating electric machine that electrically connects a stator that constitutes the rotating electric machine and a terminal block, and includes a plurality of bus bars integrally formed from metal sheet material, and a retaining member formed from an electrically insulating resin that covers the plurality of bus bars and is interposed between the plurality of bus bars.When the axial direction and circumferential direction of the rotating electric machine are defined as a first direction and a second direction, respectively, the plurality of bus bars have a first end electrically connected to the terminal block, a second end electrically connected to a coil of the stator, an elongated extension portion located between the first end and the second end and extending in the first direction, and an intermediate portion located between the extension portion and the second end and covered by the retaining member.The terminal module includes a first bus bar, a second bus bar, and a third bus bar that are arranged side by side in the second direction, and the extension portion is configured to reduce vibrations transmitted from the stator to the terminal block. [Effects of the Invention]

[0008] According to the present disclosure, vibrations transmitted from a rotating electric machine can be reduced with a simple configuration. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing an embodiment of a terminal module for a rotating electric machine attached to a terminal block. [Figure 2] FIG. 2 is a plan view showing the terminal module of FIG. 1 attached to a stator. [Figure 3] FIG. 3 is a bottom view showing the terminal module of FIG. [Figure 4] FIG. 4 is a perspective view showing the first bus bar and the second bus bar. [Figure 5] FIG. 5 is a perspective view showing a third bus bar. [Figure 6] FIG. 6 is a perspective view showing the fourth bus bar. [Figure 7] FIG. 7 is a perspective view showing the primary mold body. [Figure 8]FIG. 8 is a bottom view showing the primary mold body of FIG. [Figure 9] FIG. 9 is a diagram illustrating the molding process of the primary mold body of FIG. 7, and is a cross-sectional view illustrating a state in which the cavity of the first molding die has been filled with molten resin. [Figure 10] FIG. 10 is a perspective view showing the primary molded body, the third bus bar, and the fourth bus bar in a separated state. [Figure 11] FIG. 11 is a plan view showing a state in which the third bus bar and the fourth bus bar are attached to the primary molded body. [Figure 12] FIG. 12 is a bottom view showing a state in which the third bus bar and the fourth bus bar are attached to the primary molded body. [Figure 13] FIG. 13 is a diagram showing the molding step of the secondary molded body, and is a cross-sectional view showing a state in which the cavity of the second molding die has been filled with molten resin. [Figure 14] FIG. 14 is a cross-sectional view taken along line 14X-14X in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. The terminal module for a rotating electric machine according to the present disclosure comprises: [1] A terminal module for a rotating electric machine that electrically connects a stator constituting the rotating electric machine and a terminal block, comprising: a plurality of bus bars integrally formed from a metal plate; and a retaining member formed from an electrically insulating resin that covers the plurality of bus bars and is interposed between the plurality of bus bars. When the axial direction and circumferential direction of the rotating electric machine are defined as a first direction and a second direction, respectively, the plurality of bus bars have a first end electrically connected to the terminal block, a second end electrically connected to a coil of the stator, an elongated extension portion located between the first end and the second end and extending in the first direction, and an intermediate portion located between the extension portion and the second end and covered by the retaining member. The terminal module includes a first bus bar, a second bus bar, and a third bus bar arranged side by side in the second direction, and the extension portion is configured to reduce vibration transmitted from the stator to the terminal block.

[0011] According to this configuration, the holding member integrally holds the first bus bar, the second bus bar, and the third bus bar and is interposed between the bus bars, thereby electrically insulating the bus bars from each other.

[0012] Furthermore, with the above configuration, the first bus bar, the second bus bar, and the third bus bar have elongated extension portions extending in the first direction, which increases flexibility. As a result, the extension portions are more likely to absorb vibrations transmitted from the stator to the terminal block. Therefore, vibrations transmitted from the rotating electric machine can be reduced with a simple configuration.

[0013] [2] It is preferable that a connecting member be provided, which is made of an electrically insulating resin and integrally covers the extending portions of the first bus bar, the second bus bar, and the third bus bar. The longer the length of the extension portion of each bus bar in the first direction, the more likely the extension portions are to become misaligned relative to each other. In this regard, with the above configuration, the extension portions of each bus bar are integrally connected to each other by the connecting member. This prevents the extension portions of each bus bar from becoming misaligned from their correct positions. This improves the workability when connecting the first end of each bus bar to the terminal block.

[0014] [3] It is preferable that the connecting member has a plurality of holes through which each of the extension portions penetrates in the first direction, and that the extension portion of at least one of the first bus bar, the second bus bar, and the third bus bar and the connecting member have a regulating portion that regulates the relative movement of the connecting member in the first direction with respect to the extension portion by a concave-convex relationship.

[0015] According to this configuration, the restricting portion restricts the movement of the connecting member relative to the extending portion of each bus bar in the first direction, thereby facilitating the positioning of the connecting member relative to each bus bar.

[0016] [4] It is preferable that the regulating portion includes a convex portion protruding from the extending portion of at least one of the first bus bar, the second bus bar, and the third bus bar toward the inner surface of the hole, and a concave portion formed on the inner surface.

[0017] According to this configuration, the movement of the connecting member relative to the extending portion of each bus bar in the first direction is restricted by the uneven relationship between the protruding portion protruding from the extending portion and the recessed portion formed on the inner circumferential surface of the hole of the connecting member. Therefore, the restricting portion can be realized with a simple configuration.

[0018] [5] It is preferable that the protrusion is provided at a position closer to the first end portion than to a center portion of the extension portion in the first direction. The extension portion is more likely to be displaced from its correct position the closer it is to the first end. In this regard, according to the above configuration, the protrusion is provided at a position closer to the first end than to the center of the extension portion in the first direction. Therefore, the connecting member is positioned closer to the first end than to the center. This effectively prevents the extension portion of each bus bar from being displaced from its correct position. Therefore, the workability when connecting the first end of each bus bar to the terminal block can be further improved.

[0019] [6] It is preferable that the intermediate portion of each of the first bus bar, the second bus bar, and the third bus bar has an elongated main body portion extending in the second direction, and a leg portion bent from the main body portion to extend to the opposite side of the extension portion in the first direction and connected to the second end portion.

[0020] In conventional terminal modules, the legs connected to the second end extend in the third direction, that is, in the radial direction of the rotating electrical machine, making it difficult to reduce the size of the rotating electrical machine in the third direction. In this regard, according to the above configuration, the legs of the intermediate portion are bent from the main body and extend in the first direction opposite to the first end portion. Therefore, the length of the intermediate portion in the third direction can be made shorter than in a conventional bus bar in which the legs extend from the main body in the third direction. Therefore, the size of the terminal module in the third direction can be made smaller.

[0021] [7] It is preferable that the retaining member has a first retaining portion that covers the first bus bar and the second bus bar and is interposed between the first bus bar and the second bus bar, and a second retaining portion that covers the first retaining portion and the third bus bar.

[0022] When a retaining member integrally holds the first, second, and third bus bars, if the cross-sectional area of ​​the gap between the bus bars is small, it becomes difficult for molten resin to flow through the gap in the cavity formed by the mold for molding the retaining member and each bus bar. Therefore, if the cross-sectional area of ​​the flow path on the opposite side of the cavity from the gap across the bus bars is larger than the cross-sectional area of ​​the gap, a difference in flow pressure occurs between the molten resin flowing through the gap and the molten resin flowing through the flow path. This pressure difference can easily cause the bus bars to shift from their correct positions.

[0023] In this regard, according to the above configuration, first, the first bus bar and the second bus bar are inserted into a first molding die, and a molten resin is filled into the cavity of the first molding die to form a primary molded body consisting of the first bus bar, the second bus bar, and the first retaining portion. Next, the primary molded body and the third bus bar are inserted into a second molding die, and a molten resin is filled into the cavity of the second molding die to form a secondary molded body consisting of the primary molded body, the third bus bar, and the second retaining portion.

[0024] Therefore, the distance between the first bus bar and the second bus bar can be made larger than when the molten resin is filled into the cavity of the molding die while the first, second, and third bus bars are inserted into the molding die. This prevents differences in the flow pressure of the molten resin, and therefore prevents the first and second bus bars from shifting out of position.

[0025] [8] When the radial direction of the rotating electric machine is defined as a third direction, it is preferable that the third bus bar has a bent portion between the extending portion and the intermediate portion of the third bus bar, and that the bent portion has a portion that bends from the extending portion and extends inward in the third direction.

[0026] According to this configuration, simply changing the length of the bent portion in the third direction adjusts the height of the extension portion in the first direction, i.e., the position of the first end in the first direction and the position of the extension portion in the third direction. This allows the dimensions of the extension portion of the third bus bar to be adjusted after the primary molded body is formed. Therefore, the third bus bar is less likely to shift in position than when the first bus bar, second bus bar, and third bus bar are inserted into a molding die and molten resin is filled into the molding die cavity. This prevents the third bus bar from shifting in position.

[0027] [9] It is preferable that the first retaining portion has a groove portion into which a portion of the third bus bar fits, and that the groove portion has a bottom surface against which the portion abuts and a pair of side surfaces rising from both sides of the bottom surface in the second direction, and that the pair of side surfaces sandwich the portion in the second direction.

[0028] With this configuration, when forming the secondary molded body, the movement of the third bus bar relative to the primary molded body in the second direction due to the flow pressure of the molten resin is restricted by interference between the pair of side surfaces of the groove and a portion of the third bus bar fitted in the groove, thereby further suppressing misalignment of the third bus bar.

[0029]

[10] It is preferable that the plurality of bus bars include a fourth bus bar electrically connected to the neutral wire of the coil, and the first retaining portion has a base portion having a first abutment surface against which one end face of the third bus bar in the first direction abuts, and a second abutment surface located opposite the first abutment surface in the first direction and against which the fourth bus bar abuts, and the second retaining portion covers the fourth bus bar.

[0030] According to this configuration, the primary molded body, the third bus bar, and the fourth bus bar are inserted into a second molding die, and the cavity of the second molding die is filled with molten resin to form a secondary molded body consisting of the primary molded body, the third bus bar, the fourth bus bar, and the second holding portion. At this time, because the fourth bus bar abuts against the first holding portion, there is no gap between the fourth bus bar and the first holding portion. Therefore, misalignment of the fourth bus bar can be suppressed compared to when molten resin is filled with a gap between the fourth bus bar and the first holding portion.

[0031] [Details of the embodiments of the present disclosure] Specific examples of terminal modules for rotating electric machines according to the present disclosure will be described below with reference to the drawings. In each drawing, for the sake of convenience, some of the components may be exaggerated or simplified. The dimensional ratios of the components may differ from one drawing to another. The present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims. In this specification, "orthogonal" does not only refer to the case where the terminal modules are strictly orthogonal, but also includes the case where the terminal modules are roughly orthogonal within the scope of the effects of the present embodiment.

[0032] <Overall configuration of terminal module 100> As shown in FIGS. 1 and 2, the terminal module 100 electrically connects a terminal block 80 to a rotating electric machine 90 such as a motor generator in a hybrid vehicle or an electric vehicle.

[0033] The rotary electric machine 90 is driven by, for example, a multi-phase AC (in this embodiment, three phases consisting of a U phase, a V phase, and a W phase). The rotating electric machine 90 is composed of a cylindrical stator 91 having a stator core 92 with a plurality of slots (not shown) formed therein and coils 93 inserted into the slots, and a rotor (not shown) disposed radially inside the stator 91. The coils 93 are composed of three phase coils corresponding to the three phases (U phase, V phase, and W phase).

[0034] The terminal block 80 has a first terminal 81, a second terminal 82, a third terminal 83, and a housing 84 that accommodates the terminals 81, 82, and 83. One end 81a, 82a, 83a in the extension direction of each of the terminals 81, 82, 83 is electrically connected to the terminal module 100. The other end in the extension direction of each of the terminals 81, 82, 83 is electrically connected to an inverter (all not shown) that converts, for example, DC current from a battery into AC current (in this embodiment, three-phase AC current). In this embodiment, the first terminal 81 is a terminal corresponding to the U phase, the second terminal 82 is a terminal corresponding to the V phase, and the third terminal 83 is a terminal corresponding to the W phase.

[0035] The terminal module 100 is disposed at one end of the stator 91 in the axial direction. The terminal module 100 includes a first bus bar 10, a second bus bar 20, a third bus bar 30, and a fourth bus bar 40 electrically connected to the coil 93, and a holding member 50 covering each of the bus bars 10, 20, 30, and 40.

[0036] Furthermore, the terminal module 100 has a connecting member 70 that covers the bus bars 10, 20, and 30 integrally. Each component of the terminal module 100 will be described in detail below.

[0037] In the following description, the axial direction, circumferential direction, and radial direction of the rotating electric machine 90 will be referred to as the first direction X, second direction Y, and third direction Z, respectively. In the first direction X, the side on which the terminal module 100 is arranged with respect to the stator 91 will be referred to as the first direction one side X1, and the opposite side will be referred to as the first direction other side X2. In the third direction Z, the side on the central axis of the rotating electric machine 90 will be referred to as the third direction inner side Z1, and the opposite side will be referred to as the third direction outer side Z2.

[0038] <First bus bar 10, second bus bar 20> As shown in FIG. 4, the first bus bar 10 and the second bus bar 20 are each integrally formed from a conductive metal plate material.

[0039] The first bus bar 10 and the second bus bar 20 are arranged in the second direction Y at intervals. In the following description, the second bus bar 20 side relative to the first bus bar 10 in the second direction Y is referred to as one side Y1 in the second direction, and the opposite side is referred to as the other side Y2 in the second direction.

[0040] The first bus bar 10 has a first end 11 electrically connected to a first terminal 81 of the terminal block 80 and a second end 12 electrically connected to a coil 93 of the stator 91 . In addition, the first busbar 10 has an extending portion 13 located between the first end portion 11 and the second end portion 12, and an intermediate portion 14 located between the extending portion 13 and the second end portion 12.

[0041] The first end portion 11 and the extending portion 13 are shaped like a flat plate extending in the first direction X and in a direction perpendicular to both the first direction X and the third direction Z as a whole. 1 and 4, the first end 11 is provided with a fastening hole 11a (see FIG. 4) that penetrates in the third direction Z and through which a bolt (not shown) is inserted, and a nut 11b (see FIG. 1). The nut 11b is fixed to an end face of the first end 11 on the inner side Z1 in the third direction.

[0042] The first end 11 and the first terminal 81 (see Figure 1) of the terminal block 80 are fixed to each other by inserting a bolt (not shown) into a fastening hole (not shown) formed in one end 81a and the fastening hole 11a, and screwing the bolt into a nut 11b.

[0043] As shown in FIG. 4, the extending portion 13 has an elongated shape that extends continuously from the first end portion 11 in the first direction X. The extending portion 13 has a protruding portion 13a. The protruding portion 13a protrudes from an end face on one side Y1 in the second direction of the extending portion 13. The protruding portion 13a is provided at a position closer to the first end 11 than to the center of the extending portion 13 in the first direction X.

[0044] The intermediate portion 14 has an intermediate portion main body 14a that bends from the extending portion 13 and extends in the second direction Y, and a leg portion 14b that bends from the intermediate portion main body 14a and extends in the first direction X and is connected to the second end portion 12.

[0045] The intermediate body 14a has a flat plate shape extending in both the second direction Y and the third direction Z. The leg portion 14b is connected to an end surface of the intermediate portion main body 14a on the inner side Z1 in the third direction. The leg portion 14b extends from the intermediate portion main body 14a to the opposite side in the first direction X from the extending portion 13, i.e., to the other side X2 in the first direction.

[0046] The second end 12 is bent from the end of the leg 14b on the other side X2 in the first direction and projects as a whole toward the inside Z1 in the third direction. The second end 12 has a flat plate portion 12a located on the leg portion 14b side in the third direction Z, and a rod-shaped protrusion portion 12b located on the tip side.

[0047] The flat plate portion 12a is provided with a through hole 15 that penetrates in the first direction X. The protrusion 12b has an elongated shape extending in the third direction Z. The protrusion 12b protrudes from an end face of the flat plate portion 12a on the inner side Z1 in the third direction. In this embodiment, the protrusion 12b is a portion connected to a power line (not shown) of the coil 93 corresponding to the U phase.

[0048] As shown in FIG. 4, the second busbar 20 has a first end 21 electrically connected to the third terminal 83 of the terminal block 80 and a second end 22 electrically connected to the coil 93 of the stator 91.

[0049] The second bus bar 20 also has an extending portion 23 located between the first end portion 21 and the second end portion 22, and an intermediate portion 24 located between the extending portion 23 and the second end portion 22. The first end portion 21 and the extending portion 23 are shaped like a flat plate extending in the first direction X and in a direction perpendicular to both the first direction X and the third direction Z as a whole.

[0050] 1 and 4, the first end portion 21 is provided with a fastening hole 21a (see FIG. 4) that penetrates in the third direction Z and through which a bolt (not shown) is inserted, and a nut 21b (see FIG. 1). The nut 21b is fixed to an end face of the first end portion 21 on the inner side in the third direction Z1.

[0051] The first end 21 and the third terminal 83 (see Figure 1) of the terminal block 80 are fixed to each other by inserting a bolt (not shown) into a fastening hole (not shown) formed in one end 83a and the fastening hole 21a, and screwing the bolt into a nut 21b.

[0052] As shown in FIG. 4, the extending portion 23 has an elongated shape that extends continuously from the first end portion 21 in the first direction X. The extending portion 23 has a protruding portion 23a. The protruding portion 23a protrudes from an end face on one side Y1 in the second direction of the extending portion 23. The protruding portion 23a is provided at a position closer to the first end portion 21 than to the center of the extending portion 23 in the first direction X.

[0053] The intermediate portion 24 has an intermediate portion main body 24a that bends from the extending portion 23 and extends in the second direction Y, and a leg portion 24b that bends from the intermediate portion main body 24a and extends in the first direction X and is connected to the second end portion 22.

[0054] The intermediate body 24a has a flat plate shape extending in both the second direction Y and the third direction Z. The leg portion 24b is connected to an end surface of the intermediate portion main body 24a on the inner side Z1 in the third direction. The leg portion 24b extends from the intermediate portion main body 24a on the opposite side in the first direction X to the extending portion 23, i.e., on the other side X2 in the first direction.

[0055] The second end 22 is bent from the end of the leg 24b on the other side X2 in the first direction and projects as a whole toward the inside Z1 in the third direction. The second end 22 has a flat plate portion 22a located on the leg portion 24b side in the third direction Z, and a rod-shaped protrusion portion 22b located on the tip side.

[0056] The flat plate portion 22a is provided with a through-hole 25 that penetrates in the first direction X. The protrusion 22b has an elongated shape extending in the third direction Z. The protrusion 22b protrudes from an end face of the flat plate portion 22a on the inner side in the third direction Z1. In this embodiment, the protrusion 22b is a portion connected to a power line (not shown) of the coil 93 corresponding to the W phase.

[0057] <Third bus bar 30> As shown in FIG. 5, the third bus bar 30 is integrally formed from a conductive metal plate material. The third bus bar 30 has a first end 31 electrically connected to the second terminal 82 of the terminal block 80 and a second end 32 electrically connected to the coil 93 of the stator 91 .

[0058] The third busbar 30 also has an extension portion 33 located between the first end portion 31 and the second end portion 32, an intermediate portion 34 located between the extension portion 33 and the second end portion 32, and a bent portion 35 located between the extension portion 33 and the intermediate portion 34.

[0059] The first end portion 31 and the extending portion 33 are generally in the shape of a flat plate extending in the first direction X and in a direction perpendicular to both the first direction X and the third direction Z. 1 and 5, the first end portion 31 is provided with a fastening hole 31a (see FIG. 5) that penetrates in the third direction Z and through which a bolt (not shown) is inserted, and a nut 31b (see FIG. 1). The nut 31b is fixed to an end face of the first end portion 31 on the inner side in the third direction Z1.

[0060] The first end 31 and the second terminal 82 (see Figure 1) of the terminal block 80 are fixed to each other by inserting a bolt (not shown) into a fastening hole (not shown) formed in one end 82a and the fastening hole 31a, and screwing the bolt into a nut 31b.

[0061] As shown in FIG. 5, the extending portion 33 has an elongated shape that extends continuously from the first end portion 31 in the first direction X. The extending portion 33 has a protruding portion 33a. The protruding portion 33a protrudes from an end face on one side Y1 in the second direction of the extending portion 33. The protruding portion 33a is provided at a position closer to the first end portion 31 than to the center of the extending portion 33 in the first direction X.

[0062] The bent portion 35 has a first portion 35a that bends from the extending portion 33 and extends in the third direction Z, and a second portion 35b that bends from the first portion 35a and extends in the first direction X and is connected to the intermediate portion 34.

[0063] The first portion 35a is bent from the extending portion 33 and extends inward in the third direction Z1. The second portion 35b is bent from the tip of the first portion 35a and extends to the other side X2 in the first direction.

[0064] The intermediate portion 34 has an elongated intermediate portion main body 34a extending in the second direction Y, and leg portions 34b bending from the intermediate portion main body 34a to extend in the first direction X and connected to the second end portion 32.

[0065] The intermediate portion main body 34a is generally flat and extends in both the first direction X and the second direction Y. The second portion 35b of the bent portion 35 is connected to the center in the second direction Y of the end face on one side X1 in the first direction of the intermediate portion main body 34a.

[0066] The leg portion 34b bends from the end portion of the intermediate portion main body 34a on the one side Y1 in the second direction, and extends on the opposite side in the first direction X to the extending portion 33, that is, on the other side X2 in the first direction. The second end 32 is bent from the end of the leg 34b on the other side X2 in the first direction and projects as a whole toward the inside Z1 in the third direction.

[0067] The second end 32 has a flat plate portion 32a located on the leg portion 34b side in the third direction Z, and a rod-shaped protrusion portion 32b located on the tip side. The flat plate portion 32a is provided with a through hole 36 that penetrates in the first direction X.

[0068] The protrusion 32b has an elongated shape extending in the third direction Z. The protrusion 32b protrudes from an end face of the flat plate portion 32a on the inner side in the third direction Z1. In this embodiment, the protrusion 32b is a portion connected to a power line (not shown) of the coil 93 corresponding to the V phase.

[0069] <4th bus bar 40> As shown in FIG. 6, the fourth bus bar 40 is integrally formed from a conductive metal plate material. The fourth bus bar 40 forms the neutral point of the coil 93 and has third end portions 43A, 43B, 43C connected to the neutral wire (not shown) of the coil 93, and an intermediate portion 40A to which each of the third end portions 43A, 43B, 43C is connected.

[0070] The intermediate portion 40A extends in the second direction Y as a whole. The intermediate portion 40A has a first intermediate portion 41 located between the third end portion 43A and the third end portion 43B, and a second intermediate portion 42 located between the third end portion 43B and the third end portion 43C.

[0071] The first intermediate portion 41 has a flat plate shape extending in both the second direction Y and the third direction Z. The second intermediate portion 42 rises from the end of the first intermediate portion 41 on the one side Y1 in the second direction toward the one side X1 in the first direction and extends toward the one side Y1 in the second direction.

[0072] The third ends 43A, 43B, and 43C are arranged in order from the other side Y2 in the second direction toward the one side Y1 in the second direction. The third ends 43A, 43B, and 43C are arranged at equal intervals from one another in the second direction Y.

[0073] The third end portions 43A and 43B protrude from the end face of the first intermediate portion 41 on the inner side Z1 in the third direction as a whole toward the inner side Z1 in the third direction. The third end portions 43A, 43B have a flat plate portion 43a located on the first intermediate portion 41 side in the third direction Z, and a rod-shaped protrusion portion 43b located on the tip side.

[0074] The flat plate portion 43a is provided with a through hole 44 that penetrates in the first direction X. The protruding portion 43b has an elongated shape extending in the third direction Z. The protruding portion 43b protrudes from an end surface of the flat plate portion 43a on the inner side in the third direction Z1.

[0075] The third end 43C is bent from the end face of the second intermediate portion 42 on the other side X2 in the first direction, and projects as a whole toward the inside Z1 in the third direction. The third end 43C has an inclined portion 43c located on the second intermediate portion 42 side in the third direction Z, and a rod-shaped protruding portion 43d located on the tip side.

[0076] The inclined portion 43c is inclined toward the one side Y1 in the second direction as it moves away from the second intermediate portion 42 in the third direction Z. The protruding portion 43d has an elongated shape extending in the third direction Z. The protruding portion 43d protrudes from the end face of the inclined portion 43c on the inner side in the third direction Z1.

[0077] In this embodiment, the protrusions 43b and 43d are connected to the neutral wire (not shown) of the coil 93. <Basic configuration of holding member 50> As shown in FIGS. 1 to 8, the holding member 50 is made of an electrically insulating resin material, and covers the bus bars 10, 20, 30, and 40. As shown in FIGS.

[0078] The retaining member 50 has a first retaining portion 51 that covers the first bus bar 10 and the second bus bar 20 and is interposed between the two bus bars 10, 20, and a second retaining portion 57 that covers the first retaining portion 51, the third bus bar 30, and the fourth bus bar 40.

[0079] The holding member 50 also has a plurality of communication holes 60 that communicate with the through holes 15, 25, 36, and 44 in the first direction X. The communication holes 60 include first holes 61a and 61b formed in the first holding portion 51 and a second hole 62 formed in the second holding portion 57.

[0080] Each component of the holding member 50 will be described in detail below. <First holding part 51> As shown in Figures 4, 7 and 8, the first holding portion 51 has a base portion 51A, a first surrounding portion 52 that covers the extension portions 13, 23, and a second surrounding portion 53 that covers the second end portions 12, 22.

[0081] The base portion 51A extends in the second direction Y and covers the entire intermediate portions 14, 24 of the first bus bar 10 and the second bus bar 20 collectively. 11, the base portion 51A has a first contact surface C1 that contacts an end surface of the other side X2 in the first direction of the intermediate portion 34 of the third busbar 30. The first contact surface C1 extends along the intermediate portion 34. The first contact surface C1 is provided on an end surface 51a of the base portion 51A on the one side X1 in the first direction (the front side in the direction perpendicular to the plane of FIG. 11).

[0082] 8 and 12, a fitting recess 54A into which the intermediate portion 40A of the fourth bus bar 40 fits is formed on an end face 51b of the base portion 51A opposite to the end face 51a in the first direction X. The bottom surface of the fitting recess 54A forms a second abutment surface C2 against which the end face of the intermediate portion 40A on the one side X1 in the first direction abuts.

[0083] As shown in FIGS. 4 and 7, the first surrounding portion 52 protrudes from the end surface 51a of the base portion 51A toward the first direction side X1, and partially covers the extending portions 13 and . 7, 10, and 11, the first surrounding portion 52 has a first groove 55 on its end surface on the one side X1 in the first direction, into which the bent portion 35 of the third bus bar 30 fits. The first groove 55 is located in the center of the first surrounding portion 52 in the second direction Y.

[0084] The first groove portion 55 has a bottom surface 55a against which the first portion 35a of the bent portion 35 of the third busbar 30 abuts, and a pair of side surfaces 55b rising from both sides of the bottom surface 55a in the second direction Y toward one side X1 in the first direction.

[0085] 11, the pair of side surfaces 55b sandwich the first portion 35a of the bent portion 35 in the second direction Y. The distance between the pair of side surfaces 55b is slightly larger than the width of the first portion 35a.

[0086] As shown in FIGS. 4, 7 and 8, the second surrounding portion 53 protrudes from the base portion 51A inward in the third direction Z1 and covers the flat plate portions 12a and 22a of the second end portions 12 and 22. 8 and 12, a fitting recess 54B that is continuous with the fitting recess 54A and into which the third end portions 43A, 43B of the fourth bus bar 40 are fitted is formed on the end surface 53b on the other side X2 in the first direction of the second surrounding portion 53. The bottom surface of the fitting recess 54B forms a third abutment surface C3 against which the end surfaces on the one side X1 in the first direction of the third end portions 43A, 43B abut.

[0087] 4, 7, and 8, the second surrounding portion 53 is provided with two first holes 61a and two first holes 61b. The first holes 61a and 61b are alternately provided from the other side Y2 in the second direction toward the one side Y1 in the second direction. Each first hole 61a communicates with the through hole 15 of the first bus bar 10 and the through hole 25 of the second bus bar 20 in the first direction X.

[0088] 7 and 8, a second groove 56 is provided on an end surface of the first holding portion 51 on the inside in the third direction Z1, into which a portion of the intermediate portion 34 and the second end portion 32 of the third bus bar 30 are fitted. The second groove 56 extends continuously from the base portion 51A to the second surrounding portion 53 in the first direction X. The second groove 56 has a bottom surface 56a that contacts the leg portions 34b of the intermediate portion 34 of the third bus bar 30, and a pair of side surfaces 56b that rise from both sides of the bottom surface 56a in the second direction Y toward the inside in the third direction Z1.

[0089] 11 and 12, the pair of side surfaces 56b sandwich the leg portions 34b of the intermediate portion 34 and the flat portion 32a of the second end portion 32 in the second direction Y. The distance between the pair of side surfaces 56b is slightly larger than the width of the leg portions 34b and the flat portion 32a.

[0090] <Configuration of second holding portion 57> As shown in FIGS. 1 and 3, the second holding portion 57 has a base portion 58 extending in the second direction Y and a third surrounding portion 59 covering a part of the third bus bar 30.

[0091] 1 to 8, the base portion 58 covers the flat portion 32a of the second end portion 32 of the third bus bar 30. The base portion 58 also covers the end surface on the other side X2 in the first direction of the first holding portion 51, and covers the middle portion 40A and parts of the third end portions 43A, 43B, and 43C of the fourth bus bar 40. Specifically, the base portion 58 covers the flat portion 43a of the third end portions 43A and 43B and the inclined portion 43c of the third end portion 43C.

[0092] As shown in FIG. 3, the base portion 58 has five second holes 62 formed therein. 1 and 3 to 8, each second hole 62 communicates in the first direction X with the through hole 15 of the first bus bar 10, the through hole 25 of the second bus bar 20, the through hole 36 of the third bus bar 30, and the two through holes 44 of the fourth bus bar 40. The second hole 62 communicating with the through holes 15 and 25 also communicates in the first direction X with the first hole 61a.

[0093] 1 and 5, the third surrounding portion 59 protrudes from the base portion 58 toward the first direction side X1. The third surrounding portion 59 covers a part of the second portion 35b of the bent portion 35 of the third bus bar 30 and the intermediate portion 34. The third surrounding portion 59 and the base portion 58 also fill the second groove portion 56 of the first holding portion 51 (see FIG. 1).

[0094] <Connecting member 70> As shown in FIGS. 1, 2 and 14, the connecting member 70 is made of an electrically insulating resin material, and integrally covers the extending portions 13, 23, and 33 of the bus bars 10, 20, and 30, respectively.

[0095] The connecting member 70 has a first portion 71 that covers the first bus bar 10 , a second portion 72 that covers the third bus bar 30 , and a third portion 73 that covers the second bus bar 20 . The second portion 72 is located between the first portion 71 and the third portion 73 in the third direction Z.

[0096] The first portion 71, the second portion 72, and the third portion 73 are aligned in the second direction Y, and adjacent portions in the second direction Y are connected to each other. The first portion 71, the second portion 72, and the third portion 73 have holes 71a, 72a, and 73a through which the extending portions 13, 33, and 23 pass, respectively, in the first direction X.

[0097] 14, recesses 71c are formed on the inner circumferential surface 71b of the hole 71a at positions corresponding to the protrusions 13a protruding toward the inner circumferential surface 71b. Similarly, recesses (not shown) are formed on the inner circumferential surfaces (not shown) of the holes 72a and 73a at positions corresponding to the protrusions 33a and 23a protruding toward the inner circumferential surfaces. The recesses in the second portion 72 and the third portion 73 have the same configuration as the recess 71c in the first portion 71. Therefore, hereinafter, only the recess 71c in the first portion 71 will be described, and descriptions of the recesses in the second portion 72 and the third portion 73 will be omitted.

[0098] The recess 71c is fitted with the protrusion 13a. The recess 71c and the protrusion 13a are configured to restrict the first portion 71, i.e., the connecting member 70, from moving relative to the extending portion 13 in the first direction X by engaging with each other.

[0099] The protrusion 13a and the recess 71c correspond to the restricting portion described in [Description of the embodiment of the present disclosure]. <Manufacturing Method of Terminal Module 100> Next, a manufacturing method of the terminal module 100 will be described with reference to Fig. 9 to Fig. 13. Fig. 9 is a view corresponding to the cross-sectional view taken along line 9X-9X in Fig. 8, and Fig. 13 is a view corresponding to the cross-sectional view taken along line 13X-13X in Fig. 11.

[0100] First, as shown in Fig. 9 , the positioning pin 114 is inserted into the through hole 25 of the second bus bar 20. Furthermore, although not shown, the positioning pin 114 is inserted into the through hole 15 of the first bus bar 10. In this state, the upper mold 111 and the lower mold 112 of the first molding die 110 are clamped together. As a result, the first bus bar 10 and the second bus bar 20 inserted into the first molding die 110 are positioned relative to the cavity 113.

[0101] Next, molten resin R1 is filled into cavity 113 of first molding die 110. This forms primary molded body 101 composed of first bus bar 10, second bus bar 20, and first holding portion 51. At this time, first holes 61a communicating with each of through holes 15 and 25 are formed in first holding portion 51. Also, first holes 61b are formed in first holding portion 51 by pins (not shown).

[0102] Next, as shown in FIG. 10, the third bus bar 30 and the fourth bus bar 40 are attached to the primary molded body 101. 10 and 11 , the first portion 35a of the bent portion 35 is fitted into the first groove portion 55, and the leg portion 34b of the intermediate portion 34 and the flat portion 32a of the second end portion 32 are fitted into the second groove portion 56. This positions the third bus bar 30 relative to the primary molded body 101.

[0103] At this time, the end face on the other side X2 in the first direction of the intermediate portion main body 34a of the third busbar 30 abuts against the end face 51a (first abutment surface C1) of the base portion 51A (see FIG. 13). Also, the first portion 35a of the bent portion 35 abuts against the bottom surface 55a of the first groove portion 55 (see FIG. 1). Also, the end face on the outer side Z2 in the third direction of the leg portion 34b abuts against the bottom surface 56a.

[0104] Here, the length of the bent portion 35 in the third direction Z may be adjusted. Specifically, the length of the first portion 35a of the bent portion 35 in the third direction Z is changed. This adjusts the height of the extending portion 33 in the first direction X, i.e., the position of the first end portion 31 in the first direction X and the position of the extending portion 33 in the third direction Z.

[0105] The position of the first end 31 in the first direction X is adjusted to be the same as the positions of the first end parts 11, 21 in the first direction X (see FIG. 1). The position of the extension part 33 in the third direction Z is adjusted so that it is located between the extension part 13 of the first bus bar 10 and the extension part 23 of the second bus bar 20 in the third direction Z (see FIG. 11). As a result, the extension parts 13, 23, 33, and therefore the first end parts 11, 21, 31, are aligned in the second direction Y.

[0106] 10 and 12, the fourth bus bar 40 is attached to the fitting recesses 54A and 54B of the first holding portion 51. This positions the fourth bus bar 40 at the correct attachment position relative to the primary molded body 101. At this time, the end face of the first direction side X1 of the fourth bus bar 40 is in contact with the second contact surface C2 of the base portion 51A and the third contact surface C3 of the second surrounding portion 53.

[0107] 13, when the third bus bar 30 and the fourth bus bar 40 are attached to the primary molded body 101, the third bus bar 30, the second bus bar 20, and the fourth bus bar 40 are arranged at intervals from one another in the first direction X. Similarly, the third bus bar 30, the first bus bar 10 (not shown), and the fourth bus bar 40 are arranged at intervals from one another in the first direction X.

[0108] Next, the positioning pin 124 is inserted into the through hole 25 of the second bus bar 20. Furthermore, although not shown, the positioning pin 124 is inserted into the through holes 36, 44 of the third bus bar 30 and the fourth bus bar 40. In this state, the upper mold 121 and the lower mold 122 of the second molding die 120 are clamped together, as shown in FIG. 13 . As a result, the primary molded body 101, the third bus bar 30, and the fourth bus bar 40 inserted into the second molding die 120 are positioned relative to the cavity 123.

[0109] Next, molten resin R2 is filled into cavity 123 of second molding die 120. This forms secondary molded body 102, which is composed of primary molded body 101, third bus bar 30, fourth bus bar 40, and second holding portion 57. At this time, as shown in FIG. 13 , second holding portion 57 is formed with first holes 61a communicating with through holes 15 and 25, and second holes 62 communicating with through hole 36 and first holes 61b communicating with two through holes 44.

[0110] At this time, the second end 12, the third end 43A, the second end 22, the third end 43B, the second end 32, and the third end 43C are arranged in order from the other side Y2 in the second direction toward the one side Y1 in the second direction, and are arranged at equal intervals from each other in the second direction Y (see Figures 1 to 3).

[0111] Next, the effects of this embodiment will be described. (1) The first bus bar 10 is located between the first end 11 and the second end 12 and has an elongated extending portion 13 extending in the first direction X. The second bus bar 20 is located between the first end 21 and the second end 22 and has an elongated extending portion 23 extending in the first direction X. The third bus bar 30 is located between the first end 31 and the second end 32 and has an elongated extending portion 33 extending in the first direction X. The extending portions 13, 23, and 33 are configured to reduce vibrations transmitted from the stator 91 to the terminal block 80.

[0112] According to this configuration, the holding member 50 integrally holds the first bus bar 10, the second bus bar 20, and the third bus bar 30, and is interposed between the bus bars 10, 20, and 30. Therefore, the holding member 50 electrically insulates the bus bars 10, 20, and 30 from each other.

[0113] Furthermore, according to the above configuration, the first bus bar 10, the second bus bar 20, and the third bus bar 30 have the elongated extending portions 13, 23, and 33 extending in the first direction X, which improves flexibility. As a result, the extending portions 13, 23, and 33 facilitate absorption of vibrations transmitted from the stator 91 toward the terminal block 80. Therefore, the vibrations transmitted from the rotating electric machine 90 can be reduced with a simple configuration.

[0114] (2) The connecting member 70 is made of an electrically insulating resin and integrally covers the extending portions 13, 23, 33 of the first bus bar 10, the second bus bar 20, and the third bus bar 30, respectively. In each bus bar 10, 20, 30, the longer the length of the extending portions 13, 23, 33 in the first direction X, the more likely the extending portions 13, 23, 33 are to be misaligned relative to one another. In this regard, with the above configuration, the extending portions 13, 23, 33 of each bus bar 10, 20, 30 are integrally connected to one another by the connecting member 70. This prevents the extending portions 13, 23, 33 of each bus bar 10, 20, 30 from being misaligned from their correct positions. This improves the workability when connecting the first ends 11, 21, 31 of each bus bar 10, 20, 30 to the terminal block 80.

[0115] (3) The connecting member 70 has a plurality of holes 71a, 72a, 73a through which the extending portions 13, 23, 33 penetrate in the first direction X. The extending portion 13 of the first busbar 10 has a protruding portion 13a as a restricting portion. The connecting member 70 has a recessed portion 71c as a restricting portion.

[0116] According to this configuration, the restricting portion restricts the movement of the connecting member 70 relative to the extending portions 13, 23, 33 of the bus bars 10, 20, 30 in the first direction X. Therefore, the connecting member 70 can be easily positioned relative to the bus bars 10, 20, 30.

[0117] (4) The restricting portion has a protrusion 13a that protrudes from the extending portion 13 of the first busbar 10 toward the inner circumferential surface 71b of the hole 71a, and a recess 71c that is formed on the inner circumferential surface 71b. According to this configuration, movement of the connecting member 70 relative to the extending portions 13, 23, 33 of the busbars 10, 20, 30 in the first direction X is restricted by the uneven relationship between the protruding portions 13a protruding from the extending portions 13 and the recessed portions 71c formed on the inner circumferential surfaces 71b of the holes 71a of the connecting member 70. Therefore, the restricting portion can be realized with a simple configuration.

[0118] (5) The protrusion 13a (23a, 33a) is provided at a position closer to the first end 11 (21, 31) than to the center in the first direction X of the extension 13 (23, 33). The extension portions 13, 23, 33 are more likely to be displaced from their correct positions as they are closer to the first ends 11, 21, 31. In this regard, according to the above configuration, the protrusion 13a is provided at a position of the extension portion 13 closer to the first end 11 than to the center in the first direction X. Therefore, the connecting member 70 is positioned closer to the first end 11 than to the center. This effectively prevents the extension portions 13, 23, 33 of each bus bar 10, 20, 30 from being displaced from their correct positions. Therefore, the workability when connecting the first ends 11, 21, 31 of each bus bar to the terminal block 80 can be further improved.

[0119] (6) The intermediate portions 14, 24, 34 of the first bus bar 10, the second bus bar 20, and the third bus bar 30 each have a long intermediate portion main body 14a, 24a, 34a extending in the second direction Y, and leg portions 14b, 24b, 34b that bend from the intermediate portion main body 14a, 24a, 34a and extend opposite the extending portions 13, 23, 33 in the first direction X and are connected to the second end portions 12, 22, 32.

[0120] In conventional terminal modules, the legs connected to the second ends 12, 22, 32 extend in the third direction Z, making it difficult to reduce the size of the rotating electric machine 90 in the third direction Z. In this regard, according to the above configuration, the leg portions 14b, 24b, 34b of the intermediate portions 14, 24, 34 are bent from the intermediate portion main body 14a, 24a, 34a and extend in the first direction X on the opposite side from the first end portions 11, 21, 31. Therefore, the length of the intermediate portions 14, 24, 34 in the third direction Z can be made smaller than in conventional bus bars in which the leg portions 14b, 24b, 34b extend in the third direction Z from the intermediate portion main body 14a, 24a, 34a. Therefore, the size of the terminal module 100 in the third direction Z can be made smaller.

[0121] (7) The retaining member 50 has a first retaining portion 51 that covers the first bus bar 10 and the second bus bar 20 and is interposed between the first bus bar 10 and the second bus bar 20, and a second retaining portion 57 that covers the first retaining portion 51 and the third bus bar 30.

[0122] When the holding member 50 integrally holds the first bus bar 10, the second bus bar 20, and the third bus bar 30, if the cross-sectional area of ​​the gaps between the bus bars 10, 20, and 30 is small, molten resin has difficulty flowing through the gaps in the cavity formed by the molding die for forming the holding member 50 and the bus bars 10, 20, and 30. Therefore, if the cross-sectional area of ​​the flow path on the opposite side of the cavity from the gaps across the bus bars 10, 20, and 30 is larger than the cross-sectional area of ​​the gaps, a difference occurs between the flow pressure of the molten resin flowing through the gaps and the flow pressure of the molten resin flowing through the flow paths. This pressure difference can easily cause the bus bars 10, 20, and 30 to shift from their correct positions.

[0123] In this regard, according to the above configuration, first, the first bus bar 10 and the second bus bar 20 are inserted into the first molding die 110, and molten resin R1 is filled into the cavity 113 of the first molding die 110, thereby forming a primary molded body 101 consisting of the first bus bar 10, the second bus bar 20, and the first holding portion 51. Next, the primary molded body 101 and the third bus bar 30 are inserted into the second molding die 120, and molten resin R2 is filled into the cavity 123 of the second molding die 120, thereby forming a secondary molded body 102 consisting of the primary molded body 101, the third bus bar 30, and the second holding portion 57.

[0124] Therefore, the distance between the first busbar 10 and the second busbar 20 can be made larger than when the first busbar 10, the second busbar 20, and the third busbar 30 are inserted into a molding die and the cavity of the molding die is filled with molten resin. This prevents differences in the flow pressure of the molten resin R1 from occurring. This prevents the first busbar 10 and the second busbar 20 from being misaligned.

[0125] (8) The third bus bar 30 has a bent portion 35 between the extending portion 33 and the intermediate portion 34 of the third bus bar 30. The bent portion 35 has a first portion 35a that bends from the extending portion 33 and extends toward the inside in the third direction Z1.

[0126] According to this configuration, simply changing the length of the bent portion 35 in the third direction Z adjusts the height of the extending portion 33 in the first direction X, i.e., the position of the first end portion 31 in the first direction X and the position of the extending portion 33 in the third direction Z. This allows the size of the extending portion 33 of the third busbar 30 to be adjusted after the primary molded body 101 is formed. Therefore, the third busbar 30 is less likely to shift in position than when molten resin is filled into the cavity of the molding die with the first busbar 10, the second busbar 20, and the third busbar 30 inserted into the molding die. This makes it possible to suppress positional shifting of the third busbar 30.

[0127] (9) The first retaining portion 51 has a first groove 55 into which the first portion 35a of the bent portion 35 of the third bus bar 30 fits. The first groove 55 has a bottom surface 55a against which the first portion 35a abuts and a pair of side surfaces 55b rising from both sides of the bottom surface 55a in the second direction Y. The pair of side surfaces 55b sandwich the first portion 35a in the second direction Y. The first retaining portion 51 also has a second groove 56 into which the leg portion 34b and the flat portion 32a of the third bus bar 30 fit. The second groove 56 has a bottom surface 56a against which the leg portion 34b abuts and a pair of side surfaces 56b rising from both sides of the bottom surface 56a in the second direction Y. The pair of side surfaces 56b sandwich the leg portion 34b and the flat portion 32a in the second direction Y.

[0128] With this configuration, when forming the secondary molded body 102, movement of the third bus bar 30 relative to the primary molded body 101 in the second direction Y due to the flow pressure of the molten resin R2 is restricted by interference between the pair of side surfaces 55b of the first groove 55 and the first portion 35a of the third bus bar 30 fitted into the first groove 55. Similarly, movement of the third bus bar 30 relative to the primary molded body 101 in the second direction Y is restricted by interference between the pair of side surfaces 56b of the second groove 56 and the leg portion 34b and flat portion 32a of the third bus bar 30 fitted into the second groove 56. This further reduces positional deviation of the third bus bar 30.

[0129] (10) The multiple bus bars include a fourth bus bar 40 that is electrically connected to the neutral wire of the coil 93. The first holding portion 51 includes a base portion 51A having a first contact surface C1 that contacts one end face of the third bus bar 30 in the first direction X, and a second contact surface C2 and a third contact surface C3 that are located on the opposite side of the first contact surface C1 in the first direction X and that contact the fourth bus bar 40. The second holding portion 57 covers the fourth bus bar 40.

[0130] According to this configuration, primary molded body 101, third bus bar 30, and fourth bus bar 40 are inserted into second molding die 120, and cavity 123 of second molding die 120 is filled with molten resin R2 to form secondary molded body 102 composed of primary molded body 101, third bus bar 30, fourth bus bar 40, and second holding portion 57. At this time, because fourth bus bar 40 abuts against first holding portion 51, there is no gap between the fourth bus bar 40 and first holding portion 51. Therefore, positional deviation of the fourth bus bar 40 can be suppressed compared to when molten resin R2 is filled when there is a gap between the fourth bus bar 40 and first holding portion 51.

[0131] <Example of change> This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0132] The terminal module 100 may have a temperature sensor that detects the temperature of the coil 93 by detecting the temperature of a bus bar electrically connected to the coil 93. In this case, the location of the temperature sensor can be selected appropriately depending on the mounting requirements for the stator 91 of the terminal module 100. For example, the temperature sensor may be provided at an end of the terminal module 100 on one side Y1 in the second direction, or at an end of the terminal module 100 on the other side Y2 in the second direction.

[0133] The shape of each busbar 10, 20, 30, 40 is not limited to that exemplified in this embodiment, and may be changed as appropriate to suit the mounting requirements on the stator 91, within the scope of the advantageous effects of the present disclosure. For example, the second intermediate portion 42 of the fourth busbar 40 does not have to rise from the end of the first intermediate portion 41 on the one side Y1 in the second direction, and may be a flat plate extending in both the second direction Y and the third direction Z.

[0134] The number of fourth bus bars 40 is not limited to one as illustrated in this embodiment, but may be, for example, two or more. Furthermore, the fourth bus bars 40 may be omitted. In this case, the fitting recesses 54A and 54B can be omitted from the first holding portion 51.

[0135] The first holding portion 51 may have holes formed by, for example, a jig or a positioning pin in addition to the first holes 61a and 61b. Similarly, the second holding portion 57 may have holes formed by, for example, a jig or a positioning pin in addition to the second hole 62.

[0136] The second holding portion 57 is not limited to having the second hole 62 communicating with the first holes 61a, 61b in the first direction X as illustrated in this embodiment. That is, the second holding portion 57 may omit the second hole 62 communicating with the first holes 61a, 61b in the first direction X.

[0137] The number and arrangement of the through holes 15, 25, 36, 44 are not limited to those exemplified in this embodiment, and may be changed as appropriate to match the shape of each bus bar 10, 20, 30, 40. The communication hole 60 is not limited to having the second hole 62. That is, the second hole 62 may be omitted from the second holding portion 57. In this case, the through hole 36 can be omitted from the third bus bar 30. In this case, when forming the secondary molded body 102, for example, the third bus bar 30 may be clamped by jigs from both sides in the first direction X.

[0138] The first holes 61a, 61b may be omitted. In this case, the through holes 15, 25 can be omitted from the first bus bar 10 and the second bus bar 20. In this case, when forming the primary molded body 101, for example, the first bus bar 10 and the second bus bar 20 may be clamped by jigs from both sides in the first direction X.

[0139] The first groove portion 55 may be omitted from the first holding portion 51. The second groove portion 56 may be omitted from the first holding portion 51. The bent portion 35 may be omitted from the third bus bar 30. Even in this case, the third bus bar 30 only needs to have the extending portion 33 positioned between the extending portion 13 of the first bus bar 10 and the extending portion 23 of the second bus bar 20 in the third direction Z.

[0140] The holding member 50 is not limited to having the first holding portion 51 and the second holding portion 57. That is, the terminal module 100 may be one in which the bus bars are collectively held by the holding member 50.

[0141] In the busbars 10, 20, 30, the legs 14b, 24b, 34b of the intermediate portions 14, 24, 34 do not have to bend from the intermediate portion main body 14a, 24a, 34a and extend in the opposite direction to the extending portions 13, 23, 33 in the first direction X. For example, the legs 14b, 24b, 34b may be bent from the intermediate portion main body 14a, 24a, 34a and extend toward the inside in the third direction Z1.

[0142] The protrusions 13a, 23a, 33a are not limited to those provided at positions of the extending portions 13, 23, 33 closer to the first end portions 11, 21, 31 than to the central portions in the first direction X. For example, the protrusions 13a, 23a, 33a may be provided at the central portions, or may be provided at positions closer to the intermediate portions 14, 24, 34 than to the central portions in the first direction X.

[0143] The number and arrangement of the protrusions 13a, 23a, 33a may be changed as follows. For example, any one of the protrusions 13a, 23a, 33a may be omitted, or any two of the protrusions 13a, 23a, 33a may be omitted. In addition, in the present embodiment, the protrusions 13a, 23a, 33a protrude from the end faces on one side Y1 in the second direction of the extending portions 13, 23, 33. However, for example, they may be changed so that they protrude from the end faces on the other side Y2 in the second direction, or so that one protrusion protrudes from each end face on both sides in the second direction Y.

[0144] The protrusions 13a, 23a, and 33a may be omitted. In this case, the recesses can be omitted from the holes 71a, 72a, and 73a of the connecting member . The connecting member 70 may be omitted.

[0145] The arrangement of the bus bars is not limited to that exemplified in this embodiment, and can be changed as appropriate in accordance with the mounting requirements on the stator 91. Even in this case, it is sufficient that the bus bars are arranged at intervals from each other in the first direction X and are arranged side by side in the second direction Y.

[0146] The technical concept is described below. a terminal module for a rotating electric machine that electrically connects a stator that constitutes the rotating electric machine and a terminal block, the terminal module comprising: a plurality of bus bars integrally formed from a metal plate; and a retaining member formed from an electrically insulating resin that covers the plurality of bus bars and is interposed between the plurality of bus bars; when the axial direction and circumferential direction of the rotating electric machine are defined as a first direction and a second direction, respectively, the plurality of bus bars have: a first end electrically connected to the terminal block; a second end electrically connected to a coil of the stator; an elongated extending portion located between the first end and the second end and extending in the first direction; and an intermediate portion located between the extending portion and the second end and covered by the retaining member; and the terminal module for a rotating electric machine includes a first bus bar, a second bus bar, and a third bus bar that are arranged side by side in the second direction, and the extending portion is configured to reduce vibrations transmitted from the stator to the terminal block. [Explanation of symbols]

[0147] C1 1st contact surface C2 Second contact surface C3 3rd contact surface R1, R2 molten resin X 1st direction X1 One side X2 Other side Y Second direction Y1 One side Y2 other side Z 3rd direction Z1 inside Z2 outside 10 First bus bar 11 First end 11a Fastening hole 11b Nut 12 Second end 12a Flat plate part 12b Protrusion 13 Extension 13a Convex part 14 Middle section 14a Middle body 14b Legs 15 through holes 20 2nd bus bar 21 First end 21a Fastening hole 21b Nut 22 Second end 22a Flat plate part 22b Protrusion 23 Extension 23a Convex part 24 Middle section 24a Middle body 24b Legs 25 through holes 30 3rd bus bar 31 First end 31a Fastening hole 31b Nut 32 Second end 32a Flat plate part 32b Protrusion 33 Extension part 33a Convex part 34 Middle section 34a Middle body 34b Legs 35 Bend 35a Part 1 35b Part 2 36 Through hole 40 4th bus bar 40A middle section 41 First Intermediate Section 42 Second Intermediate Section 43A, 43B, 43C 3rd end 43a Flat plate part 43b Protrusion 43c Slope 43d protrusion 44 through holes 50 holding member 51 1st holding part 51A base part 51a End face 51b End face 52 First Enclosure 53 Second Enclosure 53b End face 54A, 54B Fitting recess 55 First groove 55a bottom 55b side 56 Second groove 56a Bottom 56b Side 57 Second holding part 58 Base 59 Third Enclosure 60 Communication hole 61a,61b 1st hole 62 2nd hole 70 Connecting member 71 Part 1 71a hole 71b Inner surface 71c Recess 72 Part 2 72a hole 73 Part 3 73a hole 80 terminal block 81 1st terminal 81a one end 82 2nd terminal 82a one end 83 3rd terminal 83a one end 84 Housing 90 Rotating Electric Machine 91 Stator 92 stator core 93 Coil 100 Terminal Module 101 Primary mold body 102 Secondary mold body 110 1st mold 111 Upper mold 112 Lower mold 113 Cavity 114 pins 120 Second mold 121 Upper mold 122 Lower mold 123 Cavity 124 pins

Claims

1. A terminal module for a rotating electric machine that electrically connects a stator constituting the rotating electric machine and a terminal block, a plurality of bus bars integrally formed from metal plate material; a holding member formed of an electrically insulating resin, covering the plurality of bus bars and interposed between the plurality of bus bars, When the axial direction and the circumferential direction of the rotating electric machine are defined as a first direction and a second direction, respectively, The plurality of bus bars include a first end portion electrically connected to the terminal block; a second end electrically connected to the coil of the stator; an elongated extending portion located between the first end portion and the second end portion and extending in the first direction; an intermediate portion located between the extending portion and the second end portion and covered by the holding member, and the first bus bar, the second bus bar, and a third bus bar arranged side by side in the second direction, the first end portion and the extending portion are flat and extend continuously in the first direction; The extension portion is configured to reduce vibrations transmitted from the stator to the terminal block. Terminal module for rotating electrical machines.

2. a connecting member formed of an electrically insulating resin and integrally covering the extending portions of the first bus bar, the second bus bar, and the third bus bar; 2. The terminal module for a rotating electric machine according to claim 1.

3. the connecting member has a plurality of holes through which each of the extension portions passes in the first direction, the extending portion of at least one of the first bus bar, the second bus bar, and the third bus bar and the connecting member have a restricting portion that restricts the connecting member from moving relative to the extending portion in the first direction by a concave-convex relationship; 3. The terminal module for a rotating electrical machine according to claim 2.

4. the restricting portion includes a convex portion protruding from the extending portion of at least one of the first bus bar, the second bus bar, and the third bus bar toward an inner circumferential surface of the hole, and a concave portion formed on the inner circumferential surface.

4. The terminal module for a rotating electric machine according to claim 3.

5. The protruding portion is provided at a position closer to the first end portion than to a central portion of the extending portion in the first direction.

5. The terminal module for a rotating electric machine according to claim 4.

6. the intermediate portion of each of the first bus bar, the second bus bar, and the third bus bar has an elongated main body portion extending in the second direction, and a leg portion bent from the main body portion to extend to an opposite side to the extending portion in the first direction and connected to the second end portion; 2. The terminal module for a rotating electric machine according to claim 1.

7. the holding member has a first holding portion that covers the first bus bar and the second bus bar and is interposed between the first bus bar and the second bus bar, and a second holding portion that covers the first holding portion and the third bus bar. The terminal module for a rotating electric machine according to claim 6.

8. When the radial direction of the rotating electric machine is defined as a third direction, the third bus bar has a bent portion between the extending portion and the intermediate portion of the third bus bar, the bent portion has a portion that bends from the extending portion and extends inward in the third direction, The terminal module for a rotating electric machine according to claim 7.

9. the first holding portion has a groove portion into which a portion of the third bus bar is fitted, the groove portion includes a bottom surface against which the portion abuts, and a pair of side surfaces rising from both sides of the bottom surface in the second direction, The pair of side surfaces sandwich the portion in the second direction.

9. The terminal module for a rotating electric machine according to claim 7 or 8.

10. the plurality of bus bars includes a fourth bus bar electrically connected to a neutral wire of the coil, the first holding portion includes a base portion having a first contact surface against which one end face of the third bus bar in the first direction comes into contact, and a second contact surface that is located on the opposite side of the first contact surface in the first direction and against which the fourth bus bar comes into contact, the second holding portion covers the fourth bus bar. The terminal module for a rotating electric machine according to claim 7.

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