JP7379849B2 - Busbar holder unit and motor with busbar holder unit - Google Patents

Description

The present invention relates to a busbar holder and a motor equipped with the busbar holder.

Conventionally, conductors extending from the stator coils are connected to conductors extending to an external power source via electrically conductive components called busbars. Generally, busbars and conductors on the coil side and external power supply side are connected in various ways. For example, in Patent Document 1, the busbar is held with a terminal block (busbar holder), and both ends of the busbar are connected with bolts. A mode is disclosed in which the conductor is connected to the coil side and the external power source side by fastening the wire.

Japanese Patent Application Publication No. 2004-327184

In a terminal block, when both ends of a bus bar are fastened with bolts, when one end is fastened, the other end that is not fastened may float. If the other end, which is to be fastened later, floats, it is difficult to align the fastening position, resulting in poor workability. Therefore, there is a need for a structure in which the fastening position of the bus bar can be adjusted.

Patent Document 1 discloses that even if the height of the bus bar and the height of the terminal block are different, the bus bar bent into a substantially L shape is held on the terminal block so as to be movable in a predetermined direction. It is stated that it is possible to absorb the difference between

The main object of the present invention is to provide a bus bar holder that improves workability by making it easier to adjust the position of the other end when fastening one end of the bus bar and then fastening the other end. It's about doing.

A busbar holder according to an exemplary first invention of the present application is a busbar holder that holds a busbar that extends in a direction intersecting the vertical direction and has a first end at one end and a second end at the other end, The holder includes a groove that is recessed downward from the top surface and accommodates the bus bar, the groove has a bottom, two walls extending upward from the bottom, and a protrusion projecting upward from the bottom, The protrusion is disposed between the first end and the second end and supports the lower surface of the bus bar.

According to the first exemplary invention of the present application, when one end of the bus bar is fastened and then the other end is fastened, the position of the other end is easily adjusted and workability is improved. A busbar holder can be provided.

FIG. 1 is a cross-sectional view schematically showing the configuration of a motor in an embodiment of the present invention. It is a perspective view showing a busbar holder and a busbar in this embodiment. FIG. 3 is a cross-sectional view showing a process of fastening both ends of the bus bar. FIG. 3 is a cross-sectional view showing a process of fastening both ends of the bus bar. FIG. 3 is a cross-sectional view showing a process of fastening both ends of the bus bar. FIG. 3 is a cross-sectional view showing a process of fastening both ends of the bus bar. It is a perspective view which shows the modification of a protrusion part. It is a perspective view showing a modification of a busbar holder and a busbar. FIG. 7 is a cross-sectional view showing a process of fastening both ends of the bus bar in another modified example of the bus bar holder and the bus bar. FIG. 7 is a cross-sectional view showing a process of fastening both ends of the bus bar in another modified example of the bus bar holder and the bus bar. FIG. 7 is a cross-sectional view showing a process of fastening both ends of the bus bar in another modified example of the bus bar holder and the bus bar. FIG. 7 is a cross-sectional view showing a process of fastening both ends of the bus bar in another modified example of the bus bar holder and the bus bar. FIG. 3 is a partial perspective view showing the housing part. FIG. 3 is a partial plan view showing the housing section.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Note that the present invention is not limited to the following embodiments. Further, changes can be made as appropriate without departing from the range in which the effects of the present invention can be achieved.

Note that in this specification, a direction parallel to the central axis of the motor is referred to as an "axial direction," and a radial direction centered on the central axis is referred to as a "radial direction." Further, with the axial direction being the vertical direction, the upper side in the drawing is simply referred to as the "upper side", and the lower side is simply referred to as the "lower side". However, this vertical direction does not indicate the positional relationship or direction when the motor in this embodiment is actually incorporated into a device. Further, the vertical direction in the busbar holder body is a direction defined for explaining the busbar holder body, and does not necessarily match the axial direction of the motor.

FIG. 1 is a cross-sectional view schematically showing the configuration of a motor in an embodiment of the present invention.

As shown in FIG. 1, the motor 1 in this embodiment includes a shaft 10 that rotates around a central axis J, a rotor 11 fixed to the shaft 10, and a stator 12 disposed on the outside of the rotor 11 in the radial direction. Equipped with

The rotor 11 and stator 12 are housed in a housing 13. The housing 13 has a bottom portion 13B and a cylindrical portion 13C. The bottom portion 13B is located below the stator 12 in the axial direction. The cylindrical portion 13C extends axially upward from the outer edge of the bottom portion 13B and surrounds the stator 12 on the outside in the radial direction. Further, the housing 13 has an opening above the stator 12 in the axial direction. The opening of the housing 13 is then covered with a bracket 15. The bracket 15 includes a bracket main body portion 15A and a lid portion 15B.

The shaft 10 has an upper bearing 14A above the rotor 11 in the axial direction, and a lower bearing 14B below the rotor 11 in the axial direction. The upper bearing 14A is fixed to the bracket 15. Lower bearing 14B is fixed to housing 13. Thereby, the shaft 10 is rotatably supported by the upper bearing 14A and the lower bearing 14B.

Bracket 15 has a through hole 16 that communicates between the inside and outside of housing 13, and a working window 90 that communicates between the inside and outside of bracket 15. The through hole 16 is not limited to a hole provided in the bracket 15 , and may be, for example, a hole in which a notch is provided in the bracket 15 and surrounded by the notch in the bracket 15 and the housing 13 . The work window 90 is used by a worker to connect the leader wire 22 and the bus bar 23 from outside the bracket 15 .

The stator 12 includes a cylindrical core back portion 12A centered on the central axis J, a plurality of teeth portions 12B extending radially inward from the core back 12A, and a coil 12C attached to each tooth portion 12B. . The coil 12C is attached to the teeth portion 12B via an insulating insulator (not shown).

A lead wire 22 extending from the stator 12 passes through the through hole 16 and is drawn out from inside the housing 13 into the bracket 15. More specifically, the lead wire 22 is drawn out from the coil 12C of the stator 12. A bus bar holder 30 that holds bus bars 40A, 40B, and 40C, which will be described later, is arranged within the bracket 15. Further, a connector 70 is provided on the wall of the bracket 15. The connector 70 has a connection terminal 20 that is connected to an external power source (not shown). Connection terminals 20 extend from connector 70 to bus bars 40A, 40B, and 40C. The lead wire 22, the bus bars 40A, 40B, 40C, and the connection terminal 20 are conductors. Therefore, by connecting the connecting terminal 20 to one end of the bus bars 40A, 40B, and 40C and connecting the lead wire 22 to the other end, the coil 12C and the external power source are electrically connected.

The bus bar holder 30 has a protrusion 30A. The protrusion 30A extends downward from the bottom surface of the bus bar holder main body 31. The bracket 15 has a positioning portion 15C. The positioning portion 15C is recessed downward from the upper surface of the bracket 15. The bus bar holder 30 is positioned on the bracket 15 by fitting the protrusion 30A into the positioning portion 15C.

FIG. 2 is a perspective view showing the busbar holder 30 and busbars 40A, 40B, and 40C in this embodiment.

As shown in FIG. 2, the busbar holder 30 extends in a direction intersecting the vertical direction and holds the busbars 40A, 40B, and 40C. The bus bars 40A, 40B, and 40C are band-shaped members that extend in a direction intersecting the vertical direction. The bus bar holder 30 includes grooves 301A, 301B, and 301C recessed downward from the top surface. Bus bar 40A is accommodated in groove 301A, bus bar 40B is accommodated in groove 301B, and bus bar 40C is accommodated in groove 301C. In this embodiment, three linear grooves 301A, 301B, and 301C are provided substantially parallel to each other on the upper surface of the bus bar holder 30 when viewed from above. Note that the plan view is a view of the bus bar holder 30 viewed from above in the vertical direction.

Hereinafter, the bus bar 40A and the groove 301A will be explained as an example. The bus bar 40A has a first end 41A at one end and a second end 42A at the other end. The bus bar holder 30 includes a groove 301A that is recessed downward from the top surface and accommodates the bus bar 40A.

The groove 301A has a bottom 302A, two walls 303A, 303B, and a protrusion 304A. Two walls 303A, 303B extend upward from the bottom 302A. The protrusion 304A protrudes upward from the bottom 302A. The protrusion 304A is arranged between the first end 41A and the second end 42A of the bus bar 40A, and supports the lower surface of the bus bar 40A.

Note that in this embodiment, the groove 301B has a bottom portion 302B, two wall portions 303B and 303C, and a protrusion portion 304B. The groove 301C has a bottom 302C, two walls 303C and 303D, and a protrusion 304C. That is, the groove 301B is constituted by a wall portion 303B forming the groove 301A and a wall portion 303C forming the groove 301C. However, the groove 301B may be composed of a wall portion other than the wall portion 303B and the wall portion 303C.

The bus bar 40A has a flat plate portion 43A between the first end 41A and the second end 42A. In this embodiment, the flat plate portion 43A extends from the first end portion 41A in a direction intersecting the vertical direction. The second end portion 42A is bent downward from the end of the flat plate portion 43A. The first end portion 41A is provided with a first fastening hole 44A that is fastened to the connecting terminal 20 extending from the connector 70. The second end portion 42A is provided with a second fastening hole 45A that is fastened to the leader wire 22 extending from the stator 12. Note that the lead wire 22 may be fastened to the first end 41A, and the connection terminal 20 may be fastened to the second end 42A.

3A to 3D are cross-sectional views showing the process of fastening both ends 41A and 42A of the bus bar 40A to the connection terminal 20 and the lead wire 22. The process of fastening the bus bar 40A will be explained using FIGS. 3A to 3D. Although either the first end 41A or the second end 42A may be fastened first, a case where the first end 41A is fastened first will be described here.

First, as shown in FIG. 3A, the bus bar 40A is accommodated in the groove 301A of the bus bar holder 30. In this embodiment, the first end 41A of the bus bar 40A is located at one end 305A of the groove 301A, and the second end 42A of the bus bar 40A is located at the other end 306A of the groove 301A. . The first fastening hole 44A is located above the bottom portion 302A and on one side of the bus bar holder 30. The second fastening hole 45A is located below the bottom portion 302A and on the other side of the bus bar holder 30. In other words, the second fastening hole 45A faces the bus bar holder 30 on the other side of the bottom portion 302A.

Next, as shown in FIG. 3B, the end of the connection terminal 20 is placed on the first end 41A side. The end of the connection terminal 20 is located below the first end 41A. The leader line 22 is arranged on the second end 42A side. The end of the leader line 22 is arranged on the other side of the bus bar holder 30 with the second end 42A interposed therebetween. Note that the connection terminal 20 has a third fastening hole 21A at its end, and the leader wire 22 has a fourth fastening hole 23A at its end. The first fastening hole 44A of the first end portion 41A to be fastened first and the third fastening hole 21A are aligned.

Then, as shown in FIG. 3C, the bolts 60 are inserted from above the bus bar 40A into the first fastening hole 44A and the third fastening hole 21A, and are received by the nuts 61 from below the connection terminal 20, so that the first end 41A and the connecting terminal 20 are fastened together. When the first end 41A is fastened, the second end 42A side will rise in the direction A in the figure. When the second end portion 42A side rises, the positions of the second fastening hole 45A and the fourth fastening hole 23A are shifted.

However, by disposing the protruding part 304A that supports the bus bar 40A between the first end 41A and the second end 42A, a part of the bus bar 40A separates from the bottom part 302A, and uses the protruding part 304A as a fulcrum. As a result, vertical springiness can be imparted to the bus bar 40A. Therefore, as shown in FIG. 3D, it becomes possible to push the second end 42A side in the direction F in the figure, and the bus bar 40A can easily adjust the fastening position of the second fastening hole 45A. With the positions of the second fastening hole 45A and the fourth fastening hole 23A aligned, the bolt 62 is inserted into the second fastening hole 45A and the fourth fastening hole 23A from the leader line 22 side, and the nut 63 is inserted from the bus bar 40A side. By receiving the lead wire 22, the second end 42A and the leader wire 22 are fastened together.

The protrusion 304A is preferably provided at one end 305A of the groove 301A. In this embodiment, one end 305A of the groove 301A is higher than the bottom 302A and has a protrusion 304A, and the upper part of the protrusion 304A is flat. Since the groove 301A has the protruding portion 304A at one end 305A, when the first end 41A of the bus bar 40A is first fastened, the first end 41A can be easily positioned to the connection terminal 20. .

Note that the groove 301A has a busbar retainer 308A connecting the two walls 303A and 303B at the other end 306A, and the bottom 302A is a recess that is recessed from the other end 306A of the groove 301A toward the groove 301A side. It is preferable to have 310A. Since the groove 301A has the busbar holder 308A at the end 306A opposite to the one end 305A where the protrusion 304A is arranged, a space 309A surrounded by the busbar holder 308A and the recess 310A in plan view is created. is formed. By accommodating the second end portion 42A in the space 309A, when the first end portion 41A side of the bus bar 40A is fastened first, lifting of the second end portion 42A side can be suppressed.

Further, a housing portion 50 that is recessed from the end surface of the recess 310A toward the groove 301A and that accommodates the nut 63 may be provided at the other end 306A of the groove 301A. In this embodiment, a housing portion 50 that opens laterally and downward from the bottom portion 302A is provided at the other end portion 306A of the groove 301A.

The groove 301A may have a first rib 307 that contacts the bus bar 4040A. The first rib 307 in contact with the bus bar 40A allows the bus bar 40A to be temporarily fixed onto the bus bar holder 30 when the bus bar 40A is fastened, thereby improving workability. In this embodiment, the first rib 307 provided in the groove 301A extends in the vertical direction of the wall portions 303A and 303B, and protrudes toward the inside of the groove 301A. Further, the first ribs 307 of the groove 301A are provided in pairs on both wall portions 303A and 303B and face each other, but the number, shape, and position of the first ribs 307 are not limited. Note that the bus bar holder 308A may also have a first rib 307 that contacts the bus bar 40A similarly to the groove 301A.

(Modified example of protrusion)
FIG. 4 is a perspective view showing a modification of the protrusion.

In this modification, the bus bar 40A has the same form as the bus bar 40A of the above embodiment, and the bus bar holder 30 has the same form as the bus bar holder 30 of the above embodiment except for the shape of the protrusion 1304A.

The groove 301A has a protrusion 1304A that protrudes from one wall 303A toward the other wall 303B. The protrusion 1304A is arranged between the first end 41A and the second end 42A of the bus bar 40A, and supports the lower surface of the bus bar 40A. The number, shape, and position of the protruding parts 1304A are not limited as long as they can support the lower surface of the bus bar 40A, but it is preferable that the protruding parts 1304A are provided in pairs on the walls 303A and 303B on both sides and face each other. Note that it is preferable that the protrusion 1304A has a lower height than the first rib 307 provided in the groove 301A and protrudes more toward the inside of the groove 301A. Furthermore, a protrusion 1304A may be provided at the base of the first rib 307.

By having the protrusion 34A on the wall 303A between the first end 41A and the second end 42A of the bus bar 40A, vertical springiness is imparted to the bus bar 40A using the protrusion 34A as a fulcrum. I can do it. Therefore, when one of the first end 41A or the second end 42A is fastened first, the position of the other end to be fastened later can be easily adjusted.

(Modified example of busbar holder and busbar)
FIG. 5 is a perspective view showing a modification of the busbar holder and the busbar.

In this modification, bus bars 140A, 140B, and 140C have flat plate portions 143A, 143B, and 143C that are different in shape from the above embodiment. Furthermore, the shapes of the grooves 1301A, 1301B, and 1301C in the bus bar holder 130 differ from those in the above embodiment.

Hereinafter, the bus bar 140A and the groove 1301A will be explained as an example.

The flat plate portion 143A of the bus bar 140A is L-shaped in plan view. Further, in accordance with the shape of the bus bar 140, the groove 1301 of the bus bar holder 130 is also L-shaped in plan view. In this way, even when the shapes of the flat plate portion 143 and the groove 1301 are different from those of the above embodiment, the protruding portion 304A is disposed between the first end 41A and the second end 42A of the bus bar 140A, By supporting the lower surface, the same effects as in the above embodiment can be obtained.

(Other modified examples of busbar holder and busbar)
6A to 6D are cross-sectional views showing the process of fastening both ends 41A and 42A of the bus bar 240A in other modified examples of the bus bar holder and the bus bar. The process of fastening the bus bar 240A will be explained using FIGS. 6A to 6D. Although either the first end 41A or the second end 42A may be fastened first, a case where the first end 41A is fastened first will be described here. In this modification, the bus bar 240A differs from the above embodiment in that the entire area from the first end 41A to the second end 42A is a flat plate portion 243A.

As shown in FIG. 6A, since the entire area from the first end 41A to the second end 42A is a flat plate portion 243A, the busbar 40 is accommodated linearly in the groove 1301A of the busbar holder 30 in a cross-sectional view. Ru. Specifically, the first fastening hole 244A on the first end 41A side is located on one side of the bus bar holder 30, and the second fastening hole 245A on the second end 42A side is located on the other side of the bus bar holder 30. To position. Further, both the first fastening hole 244A and the second fastening hole 245A are located above the bottom portion 302A.

Next, as shown in FIG. 6B, the end of the connection terminal 20 is placed below the first end 41A, and the leader wire 22 is placed below the second end 42A. The positions of the first fastening hole 244A and the third fastening hole 21A of the first end portion 41A to be fastened first are aligned.

Then, as shown in FIG. 6C, the bolts 60 are inserted from above the bus bar 240A into the first fastening hole 244A and the third fastening hole 21A, and are received by the nuts 61 from below the connection terminal 20, so that the first end 41A and the connecting terminal 20 are fastened together. When the first end 41A is fastened, the second end 42A side will rise in the direction A in the figure. When the second end portion 42A side rises, the positions of the second fastening hole 245A and the fourth fastening hole 23A are shifted.

However, by disposing the protrusion 304A that supports the bus bar 240A between the first end 41A and the second end 42A, a part of the bus bar 240A separates from the bottom 302A, and uses the protrusion 304A as a fulcrum. , it is possible to impart vertical spring properties to the bus bar 240A. Therefore, as shown in FIG. 6D, it becomes possible to push the second end 42A side in the direction F in the figure, and the position of the second fastening hole 245A of the bus bar 240A can be easily adjusted. With the second fastening hole 245A and the fourth fastening hole 23A aligned, the bolt 62 is inserted from above the bus bar 240A into the second fastening hole 245A and the fourth fastening hole 23A, and the nut is inserted from below the leader line 22. By receiving at 63, the second end 42A and the leader wire 22 are fastened together.

(Configuration of storage section)
FIG. 7A is a partial perspective view of the accommodating part 50, and FIG. 7B is a partial plan view of the accommodating part 50.

As shown in FIG. 7A, the bottom 302A has a recess 310A that is recessed from the other end 306A toward the groove 301A. In a plan view, a space 309A surrounded by the busbar retainer 308A and the recess 310A is formed. The second end 42A of the bus bar 40A is inserted into the space 309A. Bus bar 40A is fastened to nut 63 in recess 310A. The nut 63 is accommodated in the accommodating portion 50 that is recessed from the end surface of the recess 310A toward the groove 301A.

Specifically, the accommodating part 50 includes a nut accommodating part 50 that accommodates the nut 63, and a bolt accommodating part 50B that is located closer to the groove 301A than the nut accommodating part 50 and that accommodates the end of the bolt 62. Moreover, it is preferable that the nut accommodating part 50 has the 2nd rib 51 which contacts the nut 63. In FIGS. 7A and 7B, two second ribs 51, 51 face each other on both sides of the nut accommodating portion 50 and extend in the direction of the groove 301A.

With such a configuration, the nut 63 is held movably in the vertical direction by the second rib 51. This allows the nut 63 to move up and down in accordance with the entrance angle of the bolt 62, making it easier to tighten.

Moreover, it is preferable that the accommodating part 50 has an opening in at least one of the vertical directions. When the accommodating portion 50 opens only on the side, when attempting to insert the nut 63 from the side, the busbar retainer 308A interferes, resulting in poor workability. However, by providing the accommodating portion 50 with an upward or downward opening, it becomes easier to insert the nut 63 into the accommodating portion 50.

Further, as shown in FIGS. 7A and 7B, the accommodating portion 50 is more preferably opened to the sides and above the bottom portion 302A. By opening the upper part of the accommodating part 50, it is possible to prevent the nut 63 from falling during assembly work.

The bus bar holder is not limited to the above-described embodiments or modified examples, and various changes can be made.

For example, a rolling bearing such as a ball bearing or a sliding bearing such as a sleeve bearing may be used for the upper bearing and the lower bearing, and different types of bearings may be combined. Further, the outer diameter of the upper bearing and the outer diameter of the lower bearing may be different.

Further, in the present embodiment and the modified example, the connection terminal is fastened to the first end below the first end, but may be fastened above the first end. The leader wire is fastened to the second end below the second end or on the other side of the bus bar holder across the second end, but above the second end or on the bus bar holder side of the second end ( may be fastened on one side).

Further, although the bus bar is fastened to the connecting terminal and the lead wire by bolts, it may be fastened by other methods such as welding.

Further, although the number of bus bars and grooves in this embodiment and the modified example are three each, the number is not limited, and may be two or four, for example.

Further, the bus bar and the groove in the present embodiment and the modified example may have a linear shape and an L-shape in combination depending on the positions of the connection terminal and the leader line. The bus bars and grooves are not limited to linear shapes and L-shapes, and various shapes of bus bars and grooves can be applied depending on the direction in which the connecting terminals and the lead wires are pulled out.

Moreover, although the bus bar holder in this embodiment is arranged above the motor and extends in a direction intersecting the vertical direction, the arrangement and shape of the bus bar holder are not limited to this. For example, the bus bar holder may be provided on the outer circumferential surface of the housing and extend in a tangential direction or in a vertical direction of the outer circumferential surface of the housing. In this case, the vertical direction used in the description of the bus bar holder in this specification can be explained by replacing it with the radial direction of the motor, not the vertical direction of the motor.

The configurations of the above embodiment and each modification may be combined as appropriate unless mutually contradictory.

The use of the motor of the embodiment described above is not particularly limited. The motor of the embodiment described above can be used, for example, as a motor for automobiles, industrial use, and home appliances. The motor of the embodiment described above can preferably be used for an EV (Electric Vehicle) drive motor, an HEV (Hybrid Electric Vehicle) drive motor, and the like.

1 motor
10 Shaft
11 Rotor 12 Stator
13 Housing
14A Upper bearing 14B Lower bearing 15 Bracket 16 Through hole
20 Connection terminal 21A Third fastening hole
22 Lead wire 23A 4th fastening hole 30 Bus bar holder
301A, 1301A Groove
302A Bottom 303A Wall 304A, 1304A Projection
305A One end 306A Other end 307 First rib 308A Busbar holder 309A Space 310A Recess 40A, 140A, 240A Busbar 41A First end 42A Second end 43A, 143A Flat plate part 44A First fastening hole 45A Second Fastening hole 50 Accommodating part 51 Second rib

Claims (9)

A busbar holder unit including a busbar extending in a direction intersecting the vertical direction and having a first end at one end and a second end at the other end,
The busbar holder unit includes a groove that is recessed downward from the top surface and accommodates the busbar,
The groove has a bottom, two walls extending upward from the bottom, and a protrusion projecting upward from the bottom,
The protrusion is disposed between the first end and the second end,
In the groove, the lower surface of the bus bar is
a portion supported by the protrusion;
a portion facing away from the bottom between the portion supported by the protrusion and the second end;
has
The bus bar is a bus bar holder unit , wherein the bus bar has vertical spring properties with the protrusion as a fulcrum. A busbar holder unit including a busbar extending in a direction intersecting the vertical direction and having a first end at one end and a second end at the other end,
The busbar holder unit includes a groove that is recessed downward from the top surface and accommodates the busbar,
The groove has a bottom, two walls extending upward from the bottom, and a protrusion projecting from one wall toward the other wall,
The protrusion is disposed between the first end and the second end,
In the groove, the lower surface of the bus bar is
a portion supported by the protrusion;
a portion facing away from the bottom between the portion supported by the protrusion and the second end;
has
The bus bar is a bus bar holder unit , wherein the bus bar has vertical spring properties with the protrusion as a fulcrum. The bus bar holder unit according to claim 1 or 2, wherein the protrusion is provided at one end of the groove. The bus bar has a flat plate portion between the first end portion and the second end portion,
The second end portion is bent downward from the end of the flat plate portion,
The groove has a busbar retainer connecting the two walls at the other end of the groove,
The bottom portion has a recess that is recessed from the other end of the groove toward the groove side,
The busbar holder unit according to claim 3, wherein the second end portion is accommodated in a space surrounded by the busbar holder and the recessed portion in plan view. The busbar holder unit according to claim 4, wherein the groove and the busbar retainer have a first rib that contacts the busbar. The bus bar holder unit according to claim 4 or 5, wherein the groove and the flat plate portion are L-shaped in plan view. The other end of the groove is recessed from the end surface of the recess toward the groove, and has an accommodating portion for accommodating the nut;
The accommodating portion has a second rib that contacts the nut,
The busbar holder unit according to claim 4, wherein the busbar is fastened to the nut in the recess. The bus bar holder unit according to claim 7, wherein the accommodating portion has an opening in at least one of the vertical directions. A motor comprising the bus bar holder unit according to any one of claims 1 to 8,
The first end is connected to a conductor connected to an external power source,
The second end is connected to a conductor extending from the stator.

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