JP2018041919A - Terminal block and reactor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal block and a reactor improved in product reliability by preventing a component from being damaged by directly contacting a metal member accommodated in a bag-shaped cap with an external pressing member.SOLUTION: A terminal block 10, made of a resin 12 in which a nut 11 as a metal member and a bag shaped cap 13 are embedded in a metal mold, is provided with an accommodating portion 14 for a nut 11 on an upper portion of the cap 13 and a bottomed cylindrical portion 15 at a lower portion of the accommodating portion 14. Further, a cutout portion 16 is formed in the accommodating portion 14 so that a pressing piece from the metal mold, which is a pressing member from the outside, directly contacts the nut 11.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a resin terminal block in which a metal member such as a nut is insert-molded, and a reactor including the terminal block.

  A resin terminal block to which a bus bar or the like for connecting to the reactor side is fixed is provided in a vehicle-mounted reactor or the like. A cylindrical metal member such as a nut is insert-molded under the bus bar of the terminal block, and the mating terminal is fixed with a bolt or the like. Such a terminal block is usually manufactured by loading a metal member into a mold and injecting a resin.

  By the way, when a bolt is attached to the nut of the terminal block, a metal foreign matter such as chips may be generated when the bolt is tightened. If the generated metal foreign object falls outside the product, it may affect the performance of the reactor.

  Therefore, conventionally, a cap nut in which one opening of the nut is closed has been proposed as a nut insert-molded in the terminal block. According to the cap nut, metal foreign matter such as chips generated by tightening bolts can be trapped inside the cap nut, so that the metal foreign matter does not fall outside the product and there is no concern of affecting the performance of the reactor. .

Japanese Patent Laid-Open No. 02-253005 JP 2013-015195 A Japanese Patent Laying-Open No. 2015-095354

  Since the cap nut is more expensive than a general-purpose nut or the like, there is a problem that the cost of the terminal block increases. In recent years, the need for cost reduction of reactors is increasing, and cost reduction is an urgent task, and it is required to reduce the unit cost of parts. Therefore, it is desired to use an inexpensive general-purpose nut instead of the cap nut. However, it is necessary to cover the general-purpose nut with a resin or ceramic cap so that the metal foreign matter does not fall outside the product.

  However, when a general-purpose nut is covered with a cap, when the terminal block to be insert-molded is manufactured, the cap is attached to the nut, and then the cap is pressed by an external pressing member such as a press from a mold. . At this time, a large load may be applied to the cap from the side of a pressing member such as a mold.

  Therefore, the tolerance range due to variations in the nut size or cap size cannot be absorbed, and the cap may crack or crack due to the load from the mold side. Therefore, conventionally, in the field of terminal blocks and reactors, it has been a problem to avoid component damage even if inexpensive general-purpose products are employed.

  The present invention has been proposed in order to solve the above-described problems, and can prevent damage to parts by directly pressing a pressing member from the outside against a metal member accommodated in a bag-shaped cap. It is possible to provide a terminal block and a reactor that can improve product reliability.

  In order to achieve the above object, the present invention is a resin terminal block in which a cylindrical metal member and a resin or ceramic cap are embedded, and includes the following components (a) to (c): I have.

(A) The cap is provided with a housing portion for the metal member.
(B) A bottomed cylindrical portion is provided at a lower portion of the housing portion.
(C) A cutout portion is formed in the housing portion so that a pressing member from the outside contacts the metal member.

  The housing portion may be a cylindrical portion, and the cutout portion may be formed at a uniform position on the outer peripheral portion of the housing portion, or the cutout portion may be formed at the bottom of the housing portion. The outer diameter of the bottomed cylindrical part may be smaller than the outer diameter of the accommodating part. Furthermore, you may provide the recessed part which reaches the said notch part along the axial direction of the said bottomed cylindrical part in the outer peripheral part of the said bottomed cylindrical part.

  In the terminal block of the present invention, the bottom part of the metal member and the contact surface between the notch part of the housing part and the pressing member from the outside may be on the same plane. The cap may be a member in which the housing portion and the bottomed cylindrical portion are integrally provided. Furthermore, the present invention includes a core, a coil mounted around the core, and the terminal block, and a bus bar electrically connected to the coil is installed on the terminal block, The reactor which formed the attachment hole exposed from the resin of the said terminal block, and installed the attachment hole of the said bus bar in the upper part of the said cylindrical metal member is the one aspect | mode.

  According to the present invention, since the pressing member from the outside can directly press the metal member accommodated in the accommodating portion through the notch formed in the accommodating portion, the pressing force from the mold against the cap This prevents the cap from being damaged and improves product reliability.

The perspective view of the reactor which employ | adopted this embodiment. The perspective view of this embodiment. The exploded perspective view of this embodiment. The principal part expansion perspective view of this embodiment. The principal part enlarged front view of this embodiment. The principal part expansion perspective view of this embodiment. The bottom perspective view of this embodiment. Explanatory drawing of the manufacturing method of this embodiment. Explanatory drawing of the manufacturing method of this embodiment. Sectional drawing of the principal part of other embodiment.

[1] Representative embodiment (configuration)
The configuration of a representative embodiment according to the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view of a reactor 1 in which a terminal block 10 according to this embodiment is installed. The reactor 1 is a large-capacity reactor used in, for example, a drive system for a hybrid vehicle or an electric vehicle.

  As shown in FIG. 1, the reactor 1 is fixed in the case 4. The case 4 is made of a light metal (for example, an aluminum alloy) with high thermal conductivity and has a substantially rectangular parallelepiped space for housing the reactor 1.

  As the metal having high thermal conductivity constituting the case 4, aluminum, magnesium, or an alloy containing at least one of them can be used. Further, the case 4 does not necessarily need to be a metal, and a resin excellent in thermal conductivity, a resin in which a metal heat sink is embedded in a part of the resin, or a resin containing a metal filler is used. Things can be used.

  The reactor 1 is provided with an annular core 2 constituting an annular closed magnetic path. The core 2 is a compact of magnetic powder made of a powder magnetic core, and is produced by press-molding the magnetic powder. As a material for the magnetic powder, a combination of metal powders such as pure iron, an Fe—Si alloy, and an Fe—Si—Al alloy as appropriate is used. In addition to the dust core, the core 2 may be a ferrite magnetic core, a laminated steel plate, or the like.

  A coil 3 composed of parallel straight portions 3 a and 3 b is wound and attached to the outer peripheral portion of the core 2. The straight portions 3a and 3b are, for example, bent into a square shape by bending a flat wire at four points per turn in a right angle direction, and have opening surfaces on both end faces. The coil 3 is configured by continuously winding a single enameled conductor such as an edgewise coil. Various conductors can be used as the conducting wire constituting the coil 3, and the wire rod and winding method are not limited to the edgewise coil of a rectangular wire. For example, it may be a substantially circular shape or a substantially elliptical shape.

  A terminal block 10 is installed on the side edge of the reactor 1 as described above. 2 and 3 are a perspective view and an exploded perspective view of the terminal block 10, respectively. As shown in FIG. 2, the terminal block 10 is made of a resin 12 such as PPS (polyphenylene sulfide), for example, and a pair of bus bars 17 are fixed thereto. Examples of the resin 12 include, in addition to PPS, unsaturated polyester resins, urethane resins, epoxy resins, BMC (bulk molding compound), PBT (polybutylene terephthalate), and the like.

  The bus bar 17 is a plate-like conductive member for connecting to an external device such as an external power source, and is electrically connected to the coil 3. The bus bar 17 is made of, for example, copper or aluminum, and includes a surface having a mounting hole 18 for mounting a counterpart terminal such as an external power source, and a vertical portion 24 that is continuously raised from the surface. The surface of the mounting hole 18 of the bus bar 17 is exposed from the resin 12 of the terminal block 10. The mounting hole 18 of the bus bar 17 is installed in the upper part of the nut 11 to be described later, and the bus bar 17 is fixed to the terminal block 10 by attaching a bolt to the nut 11. Moreover, the front-end | tip part of the vertical part 24 of the bus-bar 17 is electrically connected with the edge part of the coil 3 by welding etc.

  At least a part of the bus bar 17 is embedded in the terminal block 10 from the viewpoint of facilitating wiring work and ensuring insulation from the case 4 of the reactor 1. Specifically, the lower half of the vertical portion 24 of the bus bar 17 is covered with the resin 12 of the terminal block 10, and the surface having the mounting hole 18 of the bus bar 17 is formed in the recess 19 (shown in FIG. 3) of the terminal block 10. Buried. A portion covering the lower half of the vertical portion 24 of the bus bar 17 is defined as a covering portion 12a.

  By the way, the left and right bus bars 17 are installed with steps in the vertical direction. Between the left and right bus bars 17, a wall surface portion 12b made of the resin 12 is raised by bending from the covering portion 12a. For this reason, the mounting hole 18 of the upper bus bar 17 is enclosed in an L shape by the covering portion 12a and the wall surface portion 12b.

  In addition, a wall surface portion 12c made of resin 12 is raised on the terminal block 10 so as to face the wall surface portion 12b. The wall surface portions 12b and 12c are arranged in parallel to each other. Therefore, the mounting hole 18 of the lower bus bar 17 is surrounded from three sides by the covering portion 12a and the wall surface portions 12b and 12c.

  At both left and right ends of the terminal block 10, mounting portions 20 are provided extending in the left-right direction (also shown in FIG. 1). As shown in FIG. 3, a mounting hole 21 is formed in the mounting portion 20, and a collar 22 that is a cylindrical metal member is embedded in the mounting hole 21. As shown in FIG. 1, a bolt 23 is inserted into the mounting hole 21 of the mounting portion 20, and the terminal block 10 is attached to the case 4 of the reactor 1 by fixing the bolt 23 to the reactor 1 side. ing.

  As shown in FIG. 3, two nuts 11, which are cylindrical metal members, and a cap 13 that can accommodate the nut 11 are embedded in the terminal block 10. The nut 11 is a general-purpose hexagonal nut. Such a terminal block 10 is one in which two hexagonal nuts 11 as metal members are loaded into a mold, a resin 12 is injected, and the nut 11 and the resin 12 are integrally formed by insert molding.

  Two caps 13 are provided corresponding to the two nuts 11. The cap 13 is a member in which the accommodating portion 14 and the bottomed cylindrical portion 15 are integrated. As with the resin 12, the cap 13 may be made of, for example, PPS (polyphenylene sulfide), or may be made of unsaturated polyester resin, urethane resin, epoxy resin, BMC, PBT, or the like. The cap 13 may be made of ceramic.

  As shown in FIGS. 4A and 4B, a housing portion 14 for the nut 11 is provided on the top of the cap 13. The accommodating part 14 is a cylindrical part. 4A shows a state in which the nut 11 is housed in the housing portion 14, and FIG. 4B shows a state in which the nut 11 has been removed from the housing portion 14. As shown in FIG. 4A, the accommodating portion 14 is provided with a hexagonal hole so as to accommodate the lower half of the nut 11, and the bottom of the nut 11 is placed on the bottom of the accommodating portion 14. ing. The nut 11 is pressed from above via the bus bar 17. At this time, the bottom surface of the bus bar 17 is in contact with the top surface of the nut 11.

  The accommodating part 14 is a cylindrical member, and the outer peripheral part of the accommodating part 14 is formed in a circular shape when viewed from above. The inner peripheral portion of the accommodating portion 14 is formed in a hexagonal shape following the outer shape of the hexagonal nut 11 to be accommodated. In a state where the nut 11 is housed in the housing portion 14, the outer peripheral portion of the housing portion 14 is positioned around the nut 11.

  A hollow bottomed cylindrical portion 15 whose bottom is closed is provided below the accommodating portion 14. The bottomed cylindrical portion 15 is provided integrally and continuously with the bottom portion of the accommodating portion 14 above the cap 13. The outer diameter of the bottomed cylindrical part 15 is thinner than the outer diameter of the accommodating part 14 which is a cylindrical part. The inner diameter of the bottomed cylindrical portion 15 is equal to or larger than the inner diameter of the opening of the nut 11. Moreover, the depth of the bottomed cylindrical part 15 is a depth in which the bolt attached to the nut 11 can be accommodated.

  As shown in FIGS. 3 to 7, three notches 16 are formed on the outer peripheral portion of the bottom of the accommodating portion 14 at an interval of 120 degrees as an even position. The width dimension of the notch portion 16 is shorter than the length of one side of the hexagonal shape of the inner peripheral portion of the accommodating portion 14. The notch 16 has a U shape when the cap 13 is viewed from the lateral direction. As shown in FIGS. 6 and 7, in the notch portion 16, a bottom surface portion 16 a and an opening portion 16 b are formed on the bottom of the U shape. The bottom surface portion 16 a is a contact surface with the pressing member from the outside, and is disposed on the same plane as the bottom portion of the nut 11. From the opening part 16b, the bottom face of the nut 11 accommodated in the accommodating part 14 is exposed. Therefore, as shown by arrows in FIGS. 7 to 9, for example, when a pressing member from a mold is inserted as a pressing member from the outside into the notch portion 16, the pressing member from the mold is notched. The nut 16 is exposed to the outer edge of the bottom surface of the nut 11 exposed from the portion 16.

  At this time, the pressing member from the mold is inserted into the cutout portion 16 along the recessed portion 15a of the outer peripheral portion of the bottomed cylindrical portion 15. As shown in FIG. 4 to FIG. 6, the recessed portion 15 a is formed in the axial direction of the cylinder of the bottomed tubular portion 15 by being recessed inwardly on the outer peripheral portion of the bottomed tubular portion 15. The recess 15 a is located below each notch 16, and the end of the recess 15 a reaches each notch 16. Further, the recessed portion 15 a has the same width dimension as the width dimension of the notch portion 16.

(Production method)
The terminal block 10 according to the present embodiment is manufactured by press-molding the nut 11 by pressing the metal member such as the nut 11 and the bus bar 17 from above and below with the pressing member from the mold. For example, the terminal block 10 is set in the mold by the following procedure to manufacture the terminal block 10.
[1] The cap 13 and the collar 22 on which the bottom portion of the nut 11 is placed on the bottom portion of the housing portion 14 are set on the lower die of the mold.
[2] Set the bottom surface of the bus bar 17 on the top surface of the nut 11.
[3] Press the upper surface of the bus bar 17 and the upper surface of the collar 22 with the upper mold of the mold, and press the lower surface of the collar 22 with the lower mold of the mold. Further, the bottom surface of the nut 11 and the cap 13 are pressed by a pressing member from a mold inserted into the cutout portion 16 of the accommodating portion 14. At this time, the pressing member from the mold is inserted to the notch portion 16 along the recessed portion 15 a of the bottomed cylindrical portion 15.
[4] After the nut 11, cap 13, bus bar 14, and collar 22 are fixed in the mold by the upper and lower molds and the pressing member in this way, resin is injected into the mold and molded.

(Action and effect)
The operation and effect of this embodiment are as follows.
(1) In the present embodiment, a notch 16 is formed in the bottom of the accommodating portion 14 of the cap 13, and the presser from the mold inserted into the notch 16 directly touches the bottom edge of the nut 11. Can be pressed (see FIGS. 5 to 8).

  At this time, the presser from the mold comes into contact with the cap 13 as well, but the presser from the mold is almost entirely pressed by the presser of the mold coming into contact with the nut 11 having higher rigidity than the cap 13. Join the nut 11. Therefore, there is no possibility that the cap 13 is cracked or cracked. As a result, in this embodiment, it is possible to avoid breakage of parts and to obtain excellent product reliability.

(2) In the present embodiment, the three notches 16 are formed at uniform intervals. That is, three cutout portions 16 made of square holes are formed on the outer peripheral portion of the bottom portion of the accommodating portion 14 at an interval of 120 degrees as an equidistant position (paragraph 0032). Therefore, the presser from the mold inserted into the notch 16 can press the bottom edge of the nut 11 with an equal force. In particular, in this embodiment, since the presser from the mold inserted into the notch 16 supports the bottom surface of the housing portion 14 at three points, compared to the case of supporting the bottom surface of the housing portion 14 at two points. The bottom surface portion does not rotate around an axis passing through two points, and rattling is less likely to occur between the presser from the mold and the bottom surface portion than in the case where the bottom surface portion is supported at four or more points. Accordingly, it is possible to reliably support the bottom surface of the accommodating portion 14.

  Furthermore, the press from the mold can press the nut 11 accommodated in the accommodating portion 14 from above via the bus bar 17 (see FIGS. 7 and 8).

  According to this embodiment, when the terminal block 10 to be insert-molded is manufactured, the presser from the mold can press the metal members such as the nut 11 and the bus bar 17 from the vertical direction. Therefore, the nut 11 and the bus bar 17 can be surely pressed, and the assembly workability is improved. Furthermore, since the top surface of the nut 11 is pressed from above via the bottom surface of the bus bar 17, the conduction between the bus bar 17 and the nut 11 can be ensured when an external terminal is connected and a current is passed.

(3) Furthermore, in the present embodiment, as described in paragraph 0031, since the outer diameter of the bottomed cylindrical portion 15 is smaller than the outer diameter of the accommodating portion 14 that is a cylindrical portion, The presser from the mold to be inserted is smoothly inserted into the cutout portion 16 along the recessed portion 15a of the outer peripheral portion of the bottomed cylindrical portion 15. Therefore, the presser from the mold can surely abut against the bottom surface of the nut 11. Further, the bottomed cylindrical portion 15 having a small outer diameter has a uniform resin thickness at the time of molding, and the moldability of the bottomed cylindrical portion 15 is improved.

(4) In the present embodiment, when the bolt 23 is attached to the nut 11, the bottomed cylindrical portion 15 provided at the lower portion of the housing portion 14 is provided even if metal foreign matters such as chips are generated along with the bolt tightening. Since it is a bottomed cylindrical part, a metal foreign material can be collected. That is, it is not necessary to use expensive parts such as cap nuts for the purpose of collecting metal foreign objects. Thereby, cost of parts can be reduced by reducing the component unit price, and the economy is improved.

(5) In this embodiment, since the bottom part of the nut 11 was mounted in the bottom part of the accommodating part 14, the accommodating part 14 and the bottom part of the nut 11 will be located on the same plane. That is, the bottom part of the accommodating part 14 of the cap 13 and the bottom part of the nut 11 are flush with each other.

  Therefore, the tolerance of the cap 13 can be absorbed by pressing both the bottom portion of the accommodating portion 14 and the bottom portion of the nut 11 with the presser from the mold. Further, since the bottom portion of the accommodating portion 14 of the cap 13 and the bottom portion of the nut 11 are flush with each other, there is an advantage that the resin can be easily cut.

(6) Further, when the presser from the mold presses the nut 11, there is no gap between the bottom surface of the housing portion 14 and the bottom surface of the nut 11, and the resin 12 does not flow between the bottom surfaces. Therefore, the resin 12 does not enter the opening of the nut 11 and the position of the cap 13 or the nut 11 is not shifted.

(7) Moreover, in this embodiment, since the recessed portion 15a is provided on the outer peripheral portion of the bottomed cylindrical portion 15, by inserting the presser from the mold along the recessed portion 15a, The cap 13 can be easily positioned. According to this embodiment, it is possible to obtain a good assembly accuracy.

(8) In this embodiment, when a bolt is attached to the nut 11, the bottomed cylindrical portion 15 made of resin covers the tip portion of the bolt, and the tip portion of the bolt is not exposed. Therefore, according to this embodiment, the outstanding insulation can be exhibited and it can contribute to the performance improvement of a reactor.

(9) Furthermore, in this embodiment, since the nut 11 is accommodated in the accommodating portion 14 of the cap 13, the cap 13 can absorb vibration. Therefore, the vibration proof performance in the terminal block 10 is enhanced, and it is possible to contribute to the improvement of the reactor performance from this point.

[2] Other Embodiments The present invention is not limited to the above-described embodiment, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. For example, various embodiments can be configured by appropriately combining a plurality of constituent elements disclosed in the above embodiments. Moreover, you may delete some components from all the components shown by embodiment.

  Specifically, the cylindrical metal member embedded in the resin 12 of the terminal block 10 may employ a collar instead of a nut and attach the cap 13 to the collar. In the above embodiment, the cap 13 is attached to each nut 11. However, the present invention is not limited to this, and a plurality of nuts 11 may be attached to the same cap 13 provided with two or more accommodating portions. Good.

  The material of the cap 13 and the material of the resin 12 constituting the terminal block 10 may be different materials as long as they have similar expansion coefficients. Furthermore, the cap 13 only needs to be provided with a housing portion for the metal member at the top, and may be a bottomed cylindrical portion at the bottom of the housing portion. The shapes and dimensions of the housing portion 14 and the bottomed tubular portion 15 are as follows. It can be selected as appropriate.

  In the accommodating part 14 according to the above embodiment, the lower half of the nut 11 is accommodated. However, the present invention is not limited thereto, and the entire nut 11 may be accommodated in the accommodating part 14. Furthermore, you may make it accommodate in the accommodating part 14 also the surface which has the attachment hole 18 of the bus-bar 17 in addition to the nut 11 whole. For example, the bottom of the accommodating portion 14 of the cap 13 may not be flush with the bottom of the nut 11.

  Further, the bottom surface of the metal member such as the nut 11 and the contact surface between the notch portion 16 of the housing portion 14 and the pressing member from the outside may not be on the same plane. For example, as shown in FIG. 10, when the bottom portion of the nut 11 is placed on the bottom portion of the accommodating portion 14 of the cap 13, the notch portion 16 may be formed so as to hit the side surface of the nut 11.

  Further, the bottomed cylindrical portion 15 may be a prismatic member, and the tip end portion thereof is not flat and may be rounded or pointed. Furthermore, if it is a bottomed cylindrical part which can collect metal foreign materials, such as a chip, the shape may be a cone-shaped or truncated cone-shaped member. From the viewpoint of improving the moldability by making the resin thickness of the cap uniform, the bottomed cylindrical portion 15 is preferably thinner in diameter, but the bottomed cylindrical portion 15 and the accommodating portion 14 are the same. An outer diameter may be sufficient.

  The shape of the notch 16, the position to be formed, the number of installations, and the like can be changed as appropriate. For example, the position where the notch 16 is formed may be provided not on the bottom of the housing 14 but on the side edge of the housing 14. In this case, the direction in which the presser from the mold presses the metal member such as the nut 11 may be a lateral direction or an oblique direction.

  In the above embodiment, the three cutouts 16 are formed at 120 degree intervals as the equidistant positions on the outer peripheral part of the bottom of the housing part 14. However, the present invention is not limited to this. 2 may be formed at intervals of 180 degrees, or four at intervals of 90 degrees. Furthermore, the member for pressing the metal member such as the nut 11 is not limited to the press from the mold, and may be a press member from the outside. The press member may be made of resin instead of metal. .

DESCRIPTION OF SYMBOLS 1 Reactor 2 Core 3 Coil 3a, 3b Straight part 4 Case 10 Terminal block 11 Nut 12 Resin 12a Covering part 12b, 12c Wall surface part 13 Cap 14 Housing | casing part 15 Bottomed cylindrical part 15a Recessed part 16 Notch part 17 Bus bar 18 Mounting hole 19 Recess 20 Mounting part 21 Mounting hole 22 Collar 23 Bolt 24 Vertical part

Claims (8)

A resin terminal block in which a cylindrical metal member and a resin or ceramic cap are embedded,
The cap is provided with a housing for the metal member,
A bottomed cylindrical part is provided at the lower part of the accommodating part,
The terminal block according to claim 1, wherein a cutout portion is formed in the housing portion so that a pressing member from the outside contacts the metal member.   The terminal block according to claim 1, wherein the housing portion is a cylindrical portion, and the cutout portion is formed at an equidistant position on an outer peripheral portion of the housing portion.   The terminal block according to claim 2, wherein the notch is formed in a bottom portion of the housing portion.   The terminal block according to claim 1, wherein the housing portion is a tubular portion, and the outer diameter of the bottomed tubular portion is smaller than the outer diameter of the housing portion.   The terminal according to any one of claims 1 to 4, wherein a concave portion that reaches the notch portion along the axial direction of the bottomed cylindrical portion is provided on an outer peripheral portion of the bottomed cylindrical portion. Stand.   The terminal block according to any one of claims 1 to 5, wherein a bottom surface of the metal member and a contact surface between the cutout portion of the housing portion and an external pressing member are on the same plane.   The terminal block according to claim 1, wherein the cap is a member integrally provided with the housing portion and the bottomed cylindrical portion. The core,
A coil mounted around the core;
The terminal block according to any one of claims 1 to 7,
The terminal block is provided with a bus bar that is electrically connected to the coil,
A mounting hole exposed from the resin of the terminal block is formed in the bus bar,
A reactor in which a mounting hole for the bus bar is provided on an upper portion of the cylindrical metal member.

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