WO2023276062A1 - Power conversion device - Google Patents

Power conversion device Download PDF

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Publication number
WO2023276062A1
WO2023276062A1 PCT/JP2021/024815 JP2021024815W WO2023276062A1 WO 2023276062 A1 WO2023276062 A1 WO 2023276062A1 JP 2021024815 W JP2021024815 W JP 2021024815W WO 2023276062 A1 WO2023276062 A1 WO 2023276062A1
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WO
WIPO (PCT)
Prior art keywords
capacitor
terminal
cover
recess
terminal block
Prior art date
Application number
PCT/JP2021/024815
Other languages
French (fr)
Japanese (ja)
Inventor
貴大 藏堀
哲夫 田中
秀典 鈴木
宏太朗 小野
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN202180088665.0A priority Critical patent/CN116686203A/en
Priority to PCT/JP2021/024815 priority patent/WO2023276062A1/en
Priority to JP2021557860A priority patent/JP6999866B1/en
Publication of WO2023276062A1 publication Critical patent/WO2023276062A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Definitions

  • the present disclosure relates to a power conversion device including a capacitor.
  • a power conversion device that converts AC voltage to DC voltage or vice versa is equipped with a capacitor.
  • the capacitor may be replaced depending on the period of use or the like.
  • Patent Document 1 a technique is disclosed that facilitates the work of replacing a capacitor by housing the capacitor inside a capacitor box. .
  • the power conversion device when replacing the capacitor, it is necessary to pull out the capacitor from the box and insert a new capacitor into the box.
  • the power conversion device is attached to an installation surface such as a wall surface.
  • the direction in which the capacitor is pulled out from the box is parallel to the installation surface.
  • Other devices are often installed on the installation surface on which the power conversion device is installed. If the distance between the power conversion device and other devices attached to it is close, other devices may interfere with the replacement of the capacitor without pulling it out while the power conversion device is attached to the installation surface. can't In such a case, the capacitor cannot be replaced unless the power conversion device is removed or the box is removed from the power conversion device, resulting in an increase in man-hours for the replacement work.
  • the present disclosure has been made in view of the above, and aims to obtain a power conversion device that can improve workability when replacing capacitors and save installation space.
  • the power conversion device includes a capacitor having a columnar body and a plurality of terminals provided on one end surface of the body, and a capacitor each connected to the terminal.
  • a first substrate having a mounting surface on which a plurality of terminal blocks are provided; and a recess that covers the mounting surface and into which the capacitor is inserted with one end surface perpendicular to the mounting surface facing the first substrate. and a first cover formed on the opposite surface.
  • FIG. 1 is a front view of a power converter according to a first embodiment of the present disclosure
  • FIG. 1 is a perspective view of a power converter according to a first embodiment
  • FIG. FIG. 2 is a cross-sectional view of the power converter according to the first embodiment, taken along line III-III shown in FIG. 1
  • FIG. 2 is a cross-sectional view of the power conversion device according to the first embodiment, taken along line IV-IV shown in FIG. 1
  • FIG. 4 is a perspective view showing a state in which a first substrate is placed on a base in Embodiment 1
  • FIG. 2 is an exploded perspective view showing a state in which the second cover of the power conversion device according to the first embodiment is removed
  • FIG. 4 is a partially enlarged perspective view enlarging a recess formed in the first cover according to Embodiment 1;
  • FIG. 4 shows a state in which the capacitor according to Embodiment 1 is inserted into the recess;
  • FIG. 4 shows a state in which the capacitor is fixed according to the first embodiment;
  • FIG. 4 is a side view showing a state in which the capacitor according to Embodiment 1 is inserted into the recess, with the first cover omitted;
  • FIG. 3 is a view of a capacitor and a terminal block according to Modification 1 of Embodiment 1 as seen from one end face side;
  • FIG. 10 is a view of a capacitor and a terminal block according to Modification 2 of Embodiment 1 as seen from one end face side;
  • FIG. 11 is a view of a capacitor and a terminal block according to Modification 3 of Embodiment 1 as viewed from one end face side;
  • FIG. 10 is a front view of a capacitor and a terminal block according to Modification 4 of Embodiment 1;
  • FIG. 11 is a partially enlarged perspective view enlarging the exposed portion of the first cover according to Modification 5 of Embodiment 1; The figure which shows the state where the sheet metal was fitted in the exposed part part shown in FIG.
  • FIG. 11 is a diagram showing a state in which capacitors are connected in parallel using sheet metal in modification 5;
  • FIG. 11 is a diagram showing a state in which capacitors are connected in series using sheet metal in modification 5; The perspective view of the 1st metal plate in the modification 5 The perspective view of the 2nd metal plate in the modification 5 The perspective view of the 3rd metal plate in the modification 5
  • Embodiment 1. 1 is a front view of a power converter according to a first embodiment of the present disclosure
  • FIG. FIG. 2 is a perspective view of a power conversion device according to Embodiment 1 of the present disclosure.
  • 3 is a cross-sectional view of the power converter according to the first embodiment, taken along line III-III shown in FIG. 1.
  • FIG. 4 is a cross-sectional view of the power converter according to the first embodiment, taken along line IV-IV shown in FIG. 1.
  • the power conversion device 1 includes a base 6 , a first substrate 5 , a housing 4 , a capacitor 12 and a second substrate 7 .
  • the base 6 serves as a base on which the first substrate 5 is placed.
  • the base 6 also functions as a heat sink that dissipates heat generated by the power converter 1 .
  • FIG. 5 is a perspective view showing a state in which the first substrate is placed on the base in Embodiment 1.
  • the first substrate 5 has a mounting surface 5a on which a plurality of terminal blocks 8 are mounted.
  • the first substrate 5 is placed on the base 6 with the mounting surface 5 a facing away from the base 6 .
  • a plurality of terminal blocks 8 are formed to protrude from the mounting surface 5a.
  • the protrusion heights of the plurality of terminal blocks 8 from the mounting surface 5a are equal.
  • the terminal block 8 is a rigid body formed by bending a metal plate into a U shape, and the free end is fixed to the first substrate 5 .
  • the bent portion of the terminal block 8 has a flat surface, and a screw hole 8a is formed in the flat surface.
  • a thread is formed inside the screw hole 8a, and a screw can be screwed therein.
  • the mounting surface 5a of the first substrate 5 On the mounting surface 5a of the first substrate 5, in addition to the terminal block 8, electronic components (not shown) are mounted. A converter, an inverter, and the like are configured by the electronic components mounted on the first substrate 5 .
  • the direction toward the base 6 is called rearward, and the opposite direction is called forward.
  • vertical to the front-back direction be a side.
  • the definition of this direction does not limit the installation posture of the power conversion device 1 .
  • the housing 4 includes a first cover 2 and a second cover 3, and constitutes the outer shell of the power conversion device 1.
  • the first cover 2 covers the mounting surface 5 a of the first substrate 5 .
  • the first cover 2 and the base 6 are fixed by engaging a claw (not shown) formed on one of them with a recess or the like formed on the other.
  • FIG. 6 is an exploded perspective view showing a state in which the second cover of the power converter according to Embodiment 1 is removed.
  • a recess 13 recessed toward the mounting surface 5a is formed on the surface 2b of the first cover 2 opposite to the surface facing the mounting surface 5a of the first substrate 5.
  • a capacitor 12 is inserted into the recess 13 .
  • the first cover 2 has an exposed portion 2a that exposes the terminal block 8 from the recess 13.
  • the exposed portion 2a is a hole penetrating the surface facing the mounting surface 5a and the opposite surface 2b of the first cover 2, but the present invention is not limited to this. may be a notch that exposes the
  • FIG. 7 is a perspective view of the capacitor in Embodiment 1.
  • FIG. The capacitor 12 has a body 10 and a plurality of terminals 11 .
  • the shape of the main body 10 is a columnar shape, and in the first embodiment, an example of a columnar shape is shown.
  • a plurality of terminals 11 are provided on one end surface 14 of the main body 10 .
  • the terminal 11 is formed by bending a metal plate into an L-shape, and the portion on one side from the bent portion is fixed to one end surface 14 of the main body 10 , and the portion on the other side projects from the one end surface 14 . It has become.
  • a through hole 11 a is formed in a portion of the terminal 11 protruding from the one end surface 14 .
  • the capacitor 12 is inserted into the recess 13 formed in the first cover 2 with one end surface 14 of the main body 10 perpendicular to the mounting surface 5 a of the first substrate 5 . Also, the direction in which the capacitor 12 is inserted into the recess 13 formed in the opposite surface 2b of the first cover 2 is the direction perpendicular to the mounting surface 5a, that is, the front-rear direction.
  • the recess 13 is formed in a shape that matches the shape of the capacitor 12.
  • the portion of the capacitor 12 into which the main body 10 is inserted has a shape that abuts on the side surface of the main body 10 and supports it from the base 6 side. formed.
  • FIG. 8 is a partially enlarged perspective view enlarging the recessed portion formed in the first cover in Embodiment 1.
  • FIG. If the main body 10 has a cylindrical shape as in the first embodiment, the cross-sectional shape of the bottom of the recess 13 is formed in an arcuate shape as shown in FIGS. 4 and 8 and the like.
  • a hole 16 is formed in the bottom of the recess 13 .
  • a groove 17 extending from the edge 16 a of the hole 16 to the edge 13 a of the recess 13 is formed in the bottom of the recess 13 .
  • FIG. 9 is a diagram showing a state in which the capacitor in Embodiment 1 is inserted into the recess.
  • FIG. 10 is a diagram showing a state in which the capacitor is fixed according to Embodiment 1.
  • FIG. 11 is a side view showing a state in which the capacitor according to Embodiment 1 is inserted into the recess, and is a view with the first cover omitted.
  • each of the plurality of terminals 11 of the capacitor 12 inserted into the recess 13 overlaps the terminal block 8 exposed from the recess 13 through the exposed portion 2a.
  • the through hole 11a and the screw hole 8a formed with each other overlap.
  • the terminal 11 and the terminal block 8 are fastened by screwing the screw 15 into the screw hole 8a from the front.
  • the capacitor 12 , the circuit formed on the first substrate 5 and the electronic component mounted on the first substrate 5 are electrically connected via the terminals 11 and the terminal block 8 .
  • terminal 11 and the terminal block 8 overlap, not only when the terminal 11 and the terminal block 8 are in contact, but also when the terminal 11 and the terminal block 8 are not in contact and A state in which the terminal 11 and the terminal block 8 overlap when viewed is also included.
  • the second cover 3 is provided on the side opposite to the first cover 2 2b.
  • the second cover 3 has a plate portion 24 and a contact portion 25 .
  • the plate portion 24 is a plate-like member that covers the recess 13 .
  • the contact portion 25 is formed so as to protrude toward the recess 13 while covering the recess 13 .
  • the contact portion 25 enters the recess 13 while covering the recess 13 and contacts the main body 10 of the capacitor 12 .
  • the abutting portion 25 abuts on the main body 10 , so that the capacitor 12 is sandwiched between the first cover 2 and the second cover 3 and fixed.
  • the plate portion 24 can be brought into contact with the main body 10 without forming the contact portion 25.
  • the terminals 11 and the terminal block 8 are fastened with the screws 15, the capacitor 12 can be prevented from coming off even without the second cover 3.
  • the second substrate 7 is mounted on the side of the second cover 3 opposite to the side on which the contact portion 25 is formed.
  • the second board 7 is a control board on which electronic components (not shown) are mounted and circuits are formed in order to control the converter and inverter configured on the first board 5 .
  • conversion from AC voltage to DC voltage, conversion from DC voltage to AC voltage, and the like are performed by controlling the converter and the inverter.
  • the power conversion device 1 is used by being attached to an installation surface such as a wall surface.
  • the power conversion device 1 is mounted with the surface of the base 6 opposite to the surface on which the first substrate 5 is provided, that is, the rearward surface facing the installation surface.
  • the axial direction of the mounting surface 5a of the first substrate 5 and the main body 10 of the capacitor 12 is parallel to the installation surface, and one end surface 14 of the main body 10 is perpendicular to the installation surface. becomes.
  • the capacitor 12 is replaced according to the period of use after being installed on the installation surface.
  • the capacitor 12 can be attached and detached from the first cover 2 by inserting it into the recess 13 along the front-back direction or removing it along the front-back direction. Therefore, when replacing the capacitor 12, the second cover 3 is first removed. Next, the screw 15 screwed into the terminal block 8 is removed, and the capacitor 12 is pulled forward from the recess 13 . A new capacitor 12 is then inserted into the recess 13 and the second cover 3 is attached.
  • devices other than the power conversion device 1 are also installed on the installation surface to which the power conversion device 1 is attached. Therefore, other devices may be arranged on the side of the power electronics device 1 . Even in such a case, in the power conversion device 1 according to the first embodiment, only the second cover 3 and the capacitor 12, which are detachable when replacing the capacitor 12, need to be moved in the front-rear direction. Other devices arranged on the side of the conversion device 1 do not get in the way.
  • the capacitor 12 can be replaced by moving the second cover 3 and the capacitor 12 in the front-rear direction.
  • the capacitor 12 can be replaced without removing the power converter 1 itself.
  • the installation space can be saved.
  • the capacitor 12 can be attached and detached by moving in the front-rear direction, it becomes possible to arrange other parts on the sides of the capacitor 12, thereby improving the degree of freedom in arranging the other parts. Further, when the capacitor 12 is pulled out sideways, the components cannot be placed on the mounting surface 5a on the path along which the capacitor 12 is pulled out. Therefore, the space on the mounting surface 5a for arranging components is reduced. On the other hand, in the power conversion device 1 according to the first embodiment, since the capacitor 12 is pulled out in the front-rear direction, the space for arranging the components on the mounting surface 5a increases compared to the case where the capacitor 12 is pulled out sideways. As a result, the mounting density of components on the mounting surface 5a can be increased, and the size of the first substrate 5 can be reduced.
  • the terminal block 8 is exposed at a position overlapping the terminal 11 when the capacitor 12 is inserted into the recess 13, alignment for connecting the terminal 11 and the terminal block 8 is not required, and workability is improved. do. Moreover, since the terminal 11 and the terminal block 8 are fixed in a connected state by screwing the screw 15 into the screw hole 8a formed in the terminal block 8, the connected state is maintained firmly. Therefore, the connection between the terminal 11 and the terminal block 8 is less likely to be cut off due to vibration, impact, or the like.
  • the connection path from the capacitor 12 to the first substrate 5 can be shortened. can.
  • electrical noise is less likely to occur, and it is less likely to be affected by electrical noise.
  • longer electrical connection paths increase the intensity of electrical noise emitted to the surroundings.
  • there is a risk of malfunctioning other electronic devices arranged in the surrounding area so it is necessary to install the other electronic devices away from each other.
  • the connection path from the capacitor 12 to the first substrate 5 is shortened, so that the intensity of the electrical noise emitted to the surroundings can be suppressed.
  • An electronic device can be arranged near the power conversion device 1 .
  • the terminal block 8 provided on the mounting surface 5a of the first substrate 5 is a rigid body formed by bending a metal plate into a U shape. That is, a soft body such as a harness is not used for connecting the capacitor 12 and the first substrate 5 .
  • a soft body such as a harness with a robot
  • the power conversion device 1 since a soft body such as a harness is not used for connecting the capacitor 12 and the first substrate 5, assembly is performed by an automatic machine such as a robot. is possible, and productivity can be improved.
  • the terminal 11 formed of a metal plate and the flat surfaces of the terminal block 8 are brought into contact with each other and connected, the contact area is widened and the contact resistance is suppressed.
  • the electric heat transfer from the terminal 11 to the terminal block 8 is also improved, the heat dissipating property of the main body 10 of the capacitor 12 is improved. As a result, the life of the capacitor 12 can be extended.
  • the capacitor 12 is sandwiched between the first cover 2 and the second cover 3 and held, the capacitor 12 is less likely to be displaced inside the recess 13 when vibrations and impacts are applied. load is less likely to be applied to the connection part. As a result, the vibration resistance of the power converter 1 is improved.
  • the terminal 11 of the main body 10 is held. It is not necessary to bring a member for fixing the capacitor 12 in the recess 13 into contact with the other end surface opposite to the one end surface 14 provided with the . Therefore, even if the main bodies 10 have different lengths in the axial direction, the capacitors 12 can be fixed in the recesses 13 if the diameters of the main bodies 10 are the same and the length along the axial direction is a length that can be accommodated in the recesses 13 . .
  • the plate portion 24 or the contact portion 25 may have elasticity. In this way, even if the depth of recess 13 is larger than the diameter of main body 10 of capacitor 12 , capacitor 12 can be sandwiched between plate portion 24 and recess 13 by deforming plate portion 24 . Also, the restoring force of the plate portion 24 holds the capacitor 12 more firmly.
  • the mounting surface 5a of the first substrate 5 is a conductive portion (hereinafter referred to as a high voltage conductive portion) including a high potential portion on which electrical components are mounted or circuits are formed. Devices with high-voltage conductive parts are sometimes required to make contact with the high-voltage conductive parts difficult in order to ensure safety.
  • the mounting surface 5a which is the high-voltage conductive portion, is covered with the first cover 2, and the first cover 2 must be removed in order to touch the high-voltage conductive portion.
  • the capacitor 12 is inserted into the recess 13 of the first cover 2 , and the first cover 2 is sandwiched between the base 6 and the capacitor 12 .
  • Terminals 11 of the capacitor 12 are fixed to a terminal block 8 provided on the mounting surface 5a through an exposed portion 2a formed on the first cover 2 by a screw 15 operated by a tool. Therefore, the first cover 2 cannot be removed from the base 6 unless the screws 15 are removed and the capacitor 12 is extracted from the recess 13 . That is, unless the screw 15 is operated using a tool, the high-voltage conductive portion cannot be touched, and the safety of the power conversion device 1 is improved.
  • the power conversion device 1 according to the first embodiment can satisfy IP20, which is a protection class.
  • a gap is formed between the capacitor 12 and the main body 10 at the portion where the groove 17 is formed. Since the end of the groove 17 is connected to the edge 16a of the hole 16 and the edge 13a of the recess, air flows around the body 10 through the hole 16 and the groove 17 even when the capacitor 12 is inserted into the recess 13. can do. That is, air can be circulated around the main body 10 of the capacitor 12 inserted into the recess 13 to improve heat dissipation.
  • the plate portion 24 of the second cover 3 is interposed between the second substrate 7 and the capacitor 12, the plate portion 24 ensures insulation between the second substrate 7 and the capacitor 12. be able to. Therefore, it is not necessary to secure an insulating distance between the second substrate 7 and the capacitor 12, and the second substrate 7 can be arranged close to the capacitor 12. FIG. This makes it possible to reduce the size of the power converter 1 .
  • FIG. 12 is a view of a capacitor and a terminal block according to Modification 1 of Embodiment 1 as viewed from one end face side.
  • a plurality of terminal blocks 8 connected to one capacitor 12 have different heights from the mounting surface 5 a of the first substrate 5 .
  • the height h2 of the terminal block 82 is lower than the height h1 of the terminal block 81. As shown in FIG.
  • the plurality of terminals 11 provided on one capacitor have different heights from the mounting surface 5a when the capacitor 12 is inserted into the recess 13 .
  • the height h4 of the terminal 112 is lower than the height h3 of the terminal 111.
  • the height h1 and the height h3 are equal, and the height h2 and the height h4 are equal, and with the capacitor 12 inserted into the recess 13, the terminal block 81 and the terminal 111 are in contact with each other, and the terminal The base 82 and the terminal 112 abut.
  • the terminal 11 of the capacitor 12 has a polarity, and if it is connected to the terminal block 8 with the wrong polarity, the power conversion device 1 will not operate as expected.
  • the state shown in FIG. When the capacitor 12 is rotated by 180 degrees about the central axis 10a of the main body 10, the terminal 112 contacts the terminal block 81, but the terminal 111 cannot contact the terminal block 82.
  • FIG. Therefore, if the state shown in FIG.
  • the capacitor 12 is a state in which the capacitor 12 is connected with the correct polarity, the capacitor 12 is inserted into the recess 13 when it is rotated 180 degrees about the central axis 10a, that is, when the polarity is wrong.
  • the terminal 111 cannot be connected to the terminal block 82. Therefore, in Modification 1, it is possible to prevent the capacitor 12 from being connected to the terminal block 8 with the wrong polarity.
  • the terminal 11 is provided on the one end face 14 so as not to be symmetrical about the intersection of the central axis 10a and the one end face 14, and the capacitor 12 contacts the terminal 11 when it is in the correct polarity posture.
  • the terminal block 8 By providing the terminal block 8 at the contact height and position, it is possible to prevent the capacitor 12 from being connected to the terminal block 8 with the wrong polarity.
  • FIG. 13 is a view of a capacitor and a terminal block according to Modification 2 of Embodiment 1 as viewed from one end face side.
  • the heights from the mounting surface 5a of the plurality of terminal blocks 8 connected to one capacitor 12 are the same, but the distances from the central axis 10a are different.
  • the distance d2 between the center of the screw hole 8a of the terminal block 82 and the central axis 10a is shorter than the distance d1 between the center of the screw hole 8a of the terminal block 81 and the central axis 10a.
  • the plurality of terminals 11 provided on one capacitor have different distances from the central axis 10a. Specifically, the distance d4 between the center of through hole 11a of terminal 112 and central axis 10a is shorter than the distance d3 between the center of through hole 11a of terminal 111 and central axis 10a.
  • the distance d1 is equal to the distance d3
  • the distance d2 is equal to the distance d4. abuts.
  • the terminal 11 can be provided so as not to be point-symmetrical with respect to the one end face 14 about the intersection of the central axis 10a and the one end face 14 . Therefore, by providing the terminal block 8 at a height and position where it contacts the terminal 11 when the capacitor 12 is in the correct polarity posture, it is possible to prevent the capacitor 12 from being connected to the terminal block 8 with the wrong polarity. can be prevented.
  • FIG. 14 is a view of a capacitor and a terminal block according to Modification 3 of Embodiment 1 as seen from one end face side.
  • the heights h5 and h6 of the plurality of terminal blocks 8 connected to one capacitor 12 from the mounting surface 5a are equal, and the distances d5 and d6 between the central axis 10a and the center of the screw hole 8a are also equal. equal.
  • the heights h7 and h8 of the terminals 11 from the mounting surface 5a are equal, and the distances d7 and d8 between the central axis 10a and the through hole 11a are also equal.
  • the height h5 and the height h7 are equal, and the height h6 and the height h8 are equal.
  • the height h9 of the center shaft 10a from the mounting surface 5a is different from the heights h5, h6, h7 and h8.
  • the terminals 11 can be provided so as not to be point-symmetrical with respect to the one end face 14 about the intersection of the central axis 10a and the one end face 14 . Therefore, by providing the terminal block 8 at a height and position where it contacts the terminal 11 when the capacitor 12 is in the correct polarity posture, it is possible to prevent the capacitor 12 from being connected to the terminal block 8 with the wrong polarity. can be prevented.
  • FIG. 15 is a front view of a capacitor and a terminal block according to Modification 4 of Embodiment 1.
  • the distance d11 between the center of the through hole 11a of the terminal 111 of the capacitor 12 and the one end surface 14 and the distance d12 between the center of the through hole 11a of the terminal 112 and the one end surface 14 are different. Also, the distance d9 and the distance d11 are equal, and the distance d10 and the distance d12 are equal.
  • FIG. 16 is a partially enlarged perspective view enlarging the exposed portion of the first cover according to Modification 5 of Embodiment 1.
  • FIG. 17 is a diagram showing a state in which a sheet metal is fitted into the exposed portion shown in FIG. 16.
  • the first cover 2 is formed with two recesses 13A and 13B.
  • a capacitor 12 is inserted into each of the two recesses 13A and 13B. That is, in Modification 5, two capacitors 12 are provided in the power converter 1 .
  • a first metal sheet 21, a second metal sheet 22, and a third metal sheet 23 can be inserted into the exposed portion 2a of the first cover 2.
  • Modification 5 by using the first sheet metal 21, the second sheet metal 22, and the third sheet metal 23, it is possible to connect the capacitors 12 in parallel or in series.
  • FIG. 18 is a diagram showing a state in which capacitors are connected in parallel using sheet metal in modification 5.
  • FIG. 18 When the capacitors 12 are connected in parallel as shown in FIG. 18, a first sheet metal 21 and a second sheet metal 22 are used.
  • the terminal block 8 is raised at two portions A shown in FIG. 18 and connected to the terminals 11 . That is, two terminal blocks 8 are provided on the first substrate 5 when the capacitors 12 are connected in parallel.
  • the first sheet metal 21 and the second sheet metal 22 are parallel sheet metals for connecting the capacitors 12 in parallel.
  • FIG. 19 is a diagram showing a state in which capacitors are connected in series using sheet metal in modification 5.
  • FIG. 19 When the capacitors 12 are connected in series as shown in FIG. 19, a third metal plate 23 is used.
  • the terminal block 8 is raised at three portions B shown in FIG. 19 and connected to the terminals 11 . That is, when connecting the capacitors 12 in series, three terminal blocks 8 are provided on the first substrate 5 . One of the three terminal blocks 8 is provided for taking an intermediate potential.
  • the third sheet metal 23 is a serial sheet metal for connecting the capacitors 12 in series.
  • the terminal block 8 may be raised at two locations.
  • FIG. 20 is a perspective view of the first metal sheet in modification 5.
  • the first sheet metal 21 is formed by bending a metal plate.
  • the first sheet metal 21 has two connecting portions 21 b that overlap the terminals 11 of the capacitor 12 .
  • the first sheet metal 21 has a connection portion 21a that connects two connection portions 21b. Holes 21c and 21d are formed in the connecting portion 21b.
  • a screw thread is not formed on the inner peripheral surface of the hole 21c formed in the connection portion 21b connected to the terminal block 8 and the terminal 11 of the capacitor 12, unlike the portion A shown in FIG. This is because the screw 15 shown in FIG. 10 is screwed into the screw hole 8a formed in the terminal block 8, so the inner peripheral surface of the hole 21c need not be threaded.
  • a screw thread is formed on the inner peripheral surface of the hole 21d formed in the connection portion 21b that is connected only to the terminal 11 of the capacitor 12 without being connected to the terminal block 8, and the screw 15 shown in FIG. can be screwed in. This is because the screw 15 is screwed into the hole 21d formed in the connection portion 21b to connect the connection portion 21b and the terminal 11, because the screw hole 8a is not connected to the terminal block 8. .
  • FIG. 21 is a perspective view of a second sheet metal in modified example 5.
  • the second metal plate 22 is formed by bending a metal plate.
  • the second metal plate 22 has two connection portions 22b that overlap the terminals 11 of the capacitor 12 .
  • the second sheet metal 22 has a connection portion 22a that connects two connection portions 22b. Holes 22c and 22d are formed in the connecting portion 22b.
  • a screw thread is not formed on the inner peripheral surface of the hole 22c formed in the connection portion 22b connected to the terminal block 8 and the terminal 11 of the capacitor 12, unlike the portion A shown in FIG. This is because the screw 15 shown in FIG. 10 is screwed into the screw hole 8a formed in the terminal block 8, so the inner peripheral surface of the hole 22c need not be threaded.
  • a screw thread is formed on the inner peripheral surface of the hole 22d formed in the connection portion 22b that is connected only to the terminal 11 of the capacitor 12 without being connected to the terminal block 8, and the screw 15 shown in FIG. can be screwed in. This is because the screw 15 is screwed into the hole 22d formed in the connection portion 22b to connect the connection portion 22b and the terminal 11, because the screw hole 8a is not connected to the terminal block 8. .
  • FIG. 22 is a perspective view of a third sheet metal in modified example 5.
  • FIG. The third sheet metal 23 is formed by bending a metal plate.
  • the third sheet metal 23 has two connection portions 23b that overlap the terminals 11 of the capacitor 12 .
  • the third sheet metal 23 has a connection portion 23a that connects two connection portions 23b. Holes 23c and 23d are formed in the connecting portion 23b.
  • the inner peripheral surface of the hole 23c formed in the connection portion 23b connected to the terminal block 8 and the terminal 11 of the capacitor 12 is not formed with a screw thread. This is because the screw 15 shown in FIG. 10 is screwed into the screw hole 8a formed in the terminal block 8, so the inner peripheral surface of the hole 23c need not be threaded.
  • a screw thread is formed on the inner peripheral surface of a hole 23d formed in a connection portion 23b that is connected only to the terminal 11 of the capacitor 12 without being connected to the terminal block 8.
  • the screw 15 shown in FIG. can be screwed in. This is because the screw 15 is screwed into the hole 23d formed in the connection portion 23b to connect the connection portion 22b and the terminal 11, because the screw hole 8a is not connected to the terminal block 8. .
  • the first sheet metal 21, the second sheet metal 22, and the third sheet metal 23 have different shapes of connecting portions 21a, 22a, and 23a, respectively.
  • the first cover 2 has a first insertion groove 18 into which the connecting portion 21a is inserted, a second insertion groove 19 into which the connecting portion 22a is inserted, and a third insertion groove 20 into which the connecting portion 23a is inserted. is formed.
  • the first insertion groove 18 and the second insertion groove 19 are parallel grooves into which sheet metals for connecting the capacitors 12 in parallel are inserted.
  • the third insertion groove 20 is a series groove into which a sheet metal for connecting the capacitors 12 in series is inserted.
  • the insertion grooves 18, 19 and 20 into which the connecting portions 21a, 22a and 23a can be inserted are determined by the shape of the connecting portions 21a, 22a and 23a and the relative positional relationship with the connecting portions 21b, 22b and 23b. Therefore, if the first cover 2 is inserted in a position different from the positions shown in FIGS. 17 to 19, it interferes with the irregularities formed around the exposed portion 2a of the first cover 2 and cannot be placed in an appropriate position. Therefore, erroneous connection between the capacitors 12 due to incorrect insertion positions of the first metal plate 21, the second metal plate 22, and the third metal plate 23 can be prevented.
  • the capacitors 12 can be connected in series or in parallel. , the first metal plate 21, the second metal plate 22, and the third metal plate 23 are not used, and the capacitors 12 can be connected in series or in parallel via a circuit formed on the first substrate 5.
  • the number of terminal blocks 8 can be reduced as compared with the case where the terminal blocks 8 are provided. Specifically, when the first metal plate 21, the second metal plate 22, and the third metal plate 23 are not used, the terminal blocks 8 are connected to all the terminals 11 of the capacitor 12, so four terminal blocks are required. 8 is required.
  • first sheet metal 21, the second sheet metal 22, and the third sheet metal 23 identifiable not only by their shapes but also by other elements, it is possible to more reliably prevent mistakes in the insertion positions.
  • first sheet metal 21, the second sheet metal 22, and the third sheet metal 23 may be painted with different colors so that they can be identified by the difference in color.
  • 1 power converter 2 first cover, 2a exposed part, 2b opposite surface, 3 second cover, 4 housing, 5 first substrate, 5a mounting surface, 6 base, 7 second substrate, 8, 81, 82 terminal block, 8a screw hole, 10 main body, 10a central shaft, 11, 111, 112 terminal, 11a through hole, 12 capacitor, 13, 13A, 13B recess, 13a edge, 14 one end face, 15 screw, 16 hole , 16a edge, 17 groove, 18 first insertion groove, 19 second insertion groove, 20 third insertion groove, 21 first sheet metal, 21a connection part, 21b connection part, 21c, 21d hole, 22 second sheet metal, 22a connecting portion, 22b connecting portion, 22c, 22d hole, 23 third sheet metal, 23a connecting portion, 23b connecting portion, 23c, 23d hole, 24 plate portion, 25 contact portion.

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  • Inverter Devices (AREA)

Abstract

This power conversion device (1) comprises: a capacitor (12) having a body (10) with a columnar shape and a plurality of terminals (11) provided to one end surface of the body (10); a first substrate (5) having a mounting surface to which a plurality of terminal blocks each connected with the terminals (11) are provided; and a first cover (2) that covers the mounting surface and in which a recess (13) into which the capacitor (12) is inserted with one end surface thereof oriented perpendicular to the mounting surface is formed on the surface (2b) opposite from the surface facing the first substrate (5) side. When the capacitor (12) is inserted in the recess (13) while the mounting surface is covered by the first cover (2), the terminals (11) and the terminal blocks are connected.

Description

電力変換装置power converter
　本開示は、コンデンサを備える電力変換装置に関する。 The present disclosure relates to a power conversion device including a capacitor.
　交流電圧から直流電圧への変換、または直流電圧から交流電圧への変換を行う電力変換装置にはコンデンサが備えられる。電力変換装置では、使用期間等に応じてコンデンサの交換が行われることがある。電力変換装置において、コンデンサの交換作業を容易にするために、特許文献１に示すように、コンデンサボックスの内部にコンデンサを収容することにより、コンデンサの交換作業を容易にする技術が開示されている。 A power conversion device that converts AC voltage to DC voltage or vice versa is equipped with a capacitor. In the power conversion device, the capacitor may be replaced depending on the period of use or the like. In order to facilitate the work of replacing a capacitor in a power conversion device, as shown in Patent Document 1, a technique is disclosed that facilitates the work of replacing a capacitor by housing the capacitor inside a capacitor box. .
特許第３４３０１８５号公報Japanese Patent No. 3430185
　特許文献１に開示された電力変換装置では、コンデンサの交換時には、ボックスからコンデンサを引き抜いて、新しいコンデンサをボックスに挿入する必要がある。電力変換装置は、壁面等の設置面に取り付けられている。特許文献１に開示された電力変換装置では、ボックスからコンデンサを取り出す際の引き抜き方向が、設置面と平行な方向となっている。電力変換装置が取り付けられる設置面には他の装置も設置されていることが多い。電力変換装置とその周囲に取り付けられた他の装置との距離が近い場合には、他の装置が邪魔になって電力変換装置を設置面に取り付けたままではコンデンサを引き抜けず交換を行うことができない。このような場合には、電力変換装置を取り外すか、またはボックスを電力変換装置から取り外してからでなければコンデンサの交換を行うことができず、交換作業の工数の増加を招いてしまう。 In the power converter disclosed in Patent Document 1, when replacing the capacitor, it is necessary to pull out the capacitor from the box and insert a new capacitor into the box. The power conversion device is attached to an installation surface such as a wall surface. In the power conversion device disclosed in Patent Literature 1, the direction in which the capacitor is pulled out from the box is parallel to the installation surface. Other devices are often installed on the installation surface on which the power conversion device is installed. If the distance between the power conversion device and other devices attached to it is close, other devices may interfere with the replacement of the capacitor without pulling it out while the power conversion device is attached to the installation surface. can't In such a case, the capacitor cannot be replaced unless the power conversion device is removed or the box is removed from the power conversion device, resulting in an increase in man-hours for the replacement work.
　一方、電力変換装置と他の装置との距離を十分に確保した場合には、電力変換装置等の設置スペースが大きくなってしまう。 On the other hand, if a sufficient distance is secured between the power conversion device and other devices, the installation space for the power conversion device, etc. becomes large.
　本開示は、上記に鑑みてなされたものであって、コンデンサを交換する際の作業性の向上および設置スペースの省スペース化を図ることができる電力変換装置を得ることを目的とする。 The present disclosure has been made in view of the above, and aims to obtain a power conversion device that can improve workability when replacing capacitors and save installation space.
　上述した課題を解決し、目的を達成するために、本開示にかかる電力変換装置は、柱状の本体と本体の一端面に設けられた複数の端子とを有するコンデンサと、それぞれが端子と接続される複数の端子台が設けられた搭載面を有する第１の基板と、搭載面を覆うとともに、一端面が搭載面と垂直となる姿勢でコンデンサが挿入される窪みが第１の基板側を向く面の反対面に形成された第１のカバーと、を備える。搭載面が第１のカバーで覆われているときに、窪みにコンデンサが挿入されると、端子と端子台が接続される。 In order to solve the above-described problems and achieve the object, the power conversion device according to the present disclosure includes a capacitor having a columnar body and a plurality of terminals provided on one end surface of the body, and a capacitor each connected to the terminal. a first substrate having a mounting surface on which a plurality of terminal blocks are provided; and a recess that covers the mounting surface and into which the capacitor is inserted with one end surface perpendicular to the mounting surface facing the first substrate. and a first cover formed on the opposite surface. When the capacitor is inserted into the recess while the mounting surface is covered with the first cover, the terminals and the terminal block are connected.
　本開示によれば、コンデンサを交換する際の作業性の向上および設置スペースの省スペース化を図ることができる電力変換装置を得ることができるという効果を奏する。 According to the present disclosure, there is an effect that it is possible to obtain a power conversion device capable of improving workability when replacing a capacitor and saving the installation space.
本開示の実施の形態１にかかる電力変換装置の正面図1 is a front view of a power converter according to a first embodiment of the present disclosure; FIG. 実施の形態１にかかる電力変換装置の斜視図1 is a perspective view of a power converter according to a first embodiment; FIG. 実施の形態１にかかる電力変換装置の断面図であって、図１に示すＩＩＩ－ＩＩＩ線に沿った断面図FIG. 2 is a cross-sectional view of the power converter according to the first embodiment, taken along line III-III shown in FIG. 1; 実施の形態１にかかる電力変換装置の断面図であって、図１に示すＩＶ－ＩＶ線に沿った断面図FIG. 2 is a cross-sectional view of the power conversion device according to the first embodiment, taken along line IV-IV shown in FIG. 1; 実施の形態１においてベースに第１の基板が載置された状態を示す斜視図FIG. 4 is a perspective view showing a state in which a first substrate is placed on a base in Embodiment 1; 実施の形態１にかかる電力変換装置の第２のカバーを外した状態を示す分解斜視図FIG. 2 is an exploded perspective view showing a state in which the second cover of the power conversion device according to the first embodiment is removed; 実施の形態１におけるコンデンサの斜視図Perspective view of the capacitor in Embodiment 1 実施の形態１における第１のカバーに形成された窪み部分を拡大した部分拡大斜視図FIG. 4 is a partially enlarged perspective view enlarging a recess formed in the first cover according to Embodiment 1; 実施の形態１におけるコンデンサを窪みに差し込んだ状態を示す図FIG. 4 shows a state in which the capacitor according to Embodiment 1 is inserted into the recess; 実施の形態１におけるコンデンサを固定した状態を示す図FIG. 4 shows a state in which the capacitor is fixed according to the first embodiment; 実施の形態１におけるコンデンサが窪みに挿入された状態を示す側面図であって、第１のカバーを省略して示した図FIG. 4 is a side view showing a state in which the capacitor according to Embodiment 1 is inserted into the recess, with the first cover omitted; 実施の形態１の変形例１にかかるコンデンサと端子台とを一端面側から見た図FIG. 3 is a view of a capacitor and a terminal block according to Modification 1 of Embodiment 1 as seen from one end face side; 実施の形態１の変形例２にかかるコンデンサと端子台とを一端面側から見た図FIG. 10 is a view of a capacitor and a terminal block according to Modification 2 of Embodiment 1 as seen from one end face side; 実施の形態１の変形例３にかかるコンデンサと端子台とを一端面側から見た図FIG. 11 is a view of a capacitor and a terminal block according to Modification 3 of Embodiment 1 as viewed from one end face side; 実施の形態１の変形例４にかかるコンデンサと端子台とを前方から見た図FIG. 10 is a front view of a capacitor and a terminal block according to Modification 4 of Embodiment 1; 実施の形態１の変形例５にかかる第１のカバーの露出部部分を拡大した部分拡大斜視図FIG. 11 is a partially enlarged perspective view enlarging the exposed portion of the first cover according to Modification 5 of Embodiment 1; 図１６に示した露出部部分に板金がはめ込まれた状態を示す図The figure which shows the state where the sheet metal was fitted in the exposed part part shown in FIG. 変形例５において板金を用いてコンデンサ同士を並列に接続した状態を示す図FIG. 11 is a diagram showing a state in which capacitors are connected in parallel using sheet metal in modification 5; 変形例５において板金を用いてコンデンサ同士を直列に接続した状態を示す図FIG. 11 is a diagram showing a state in which capacitors are connected in series using sheet metal in modification 5; 変形例５における第１の板金の斜視図The perspective view of the 1st metal plate in the modification 5 変形例５における第２の板金の斜視図The perspective view of the 2nd metal plate in the modification 5 変形例５における第３の板金の斜視図The perspective view of the 3rd metal plate in the modification 5
　以下に、本開示の実施の形態にかかる電力変換装置を図面に基づいて詳細に説明する。 A power converter according to an embodiment of the present disclosure will be described in detail below with reference to the drawings.
実施の形態１．
　図１は、本開示の実施の形態１にかかる電力変換装置の正面図である。図２は、本開示の実施の形態１にかかる電力変換装置の斜視図である。図３は、実施の形態１にかかる電力変換装置の断面図であって、図１に示すＩＩＩ－ＩＩＩ線に沿った断面図である。図４は、実施の形態１にかかる電力変換装置の断面図であって、図１に示すＩＶ－ＩＶ線に沿った断面図である。電力変換装置１は、ベース６と、第１の基板５と、筐体４と、コンデンサ１２と、第２の基板７と、を備える。ベース６は、第１の基板５が載置される基台となる。また、ベース６は、電力変換装置１で発生した熱を放熱させるヒートシンクとしても機能する。 Embodiment 1.
1 is a front view of a power converter according to a first embodiment of the present disclosure; FIG. FIG. 2 is a perspective view of a power conversion device according to Embodiment 1 of the present disclosure. 3 is a cross-sectional view of the power converter according to the first embodiment, taken along line III-III shown in FIG. 1. FIG. 4 is a cross-sectional view of the power converter according to the first embodiment, taken along line IV-IV shown in FIG. 1. FIG. The power conversion device 1 includes a base 6 , a first substrate 5 , a housing 4 , a capacitor 12 and a second substrate 7 . The base 6 serves as a base on which the first substrate 5 is placed. The base 6 also functions as a heat sink that dissipates heat generated by the power converter 1 .
　図５は、実施の形態１においてベースに第１の基板が載置された状態を示す斜視図である。第１の基板５は、複数の端子台８が搭載された搭載面５ａを有する。第１の基板５は、搭載面５ａをベース６と反対に向けてベース６に載置されている。複数の端子台８は、搭載面５ａから突出するように形成されている。複数の端子台８の搭載面５ａからの突出高さは等しくなっている。 FIG. 5 is a perspective view showing a state in which the first substrate is placed on the base in Embodiment 1. FIG. The first substrate 5 has a mounting surface 5a on which a plurality of terminal blocks 8 are mounted. The first substrate 5 is placed on the base 6 with the mounting surface 5 a facing away from the base 6 . A plurality of terminal blocks 8 are formed to protrude from the mounting surface 5a. The protrusion heights of the plurality of terminal blocks 8 from the mounting surface 5a are equal.
　端子台８は、金属の板をＵ字状に折り曲げて形成された剛体であり、解放された端部が第１の基板５に固定されている。端子台８の折り曲げられた部分は平坦面になっており、その平坦面にはねじ穴８ａが形成されている。ねじ穴８ａの内側にはねじ山が形成されており、ねじをねじ込むことが可能となっている。 The terminal block 8 is a rigid body formed by bending a metal plate into a U shape, and the free end is fixed to the first substrate 5 . The bent portion of the terminal block 8 has a flat surface, and a screw hole 8a is formed in the flat surface. A thread is formed inside the screw hole 8a, and a screw can be screwed therein.
　第１の基板５の搭載面５ａには、端子台８の他に図示を省略した電子部品が搭載されている。第１の基板５に搭載された電子部品によってコンバータおよびインバータ等が構成される。なお、以下の説明において搭載面５ａの法線方向のうちベース６に向かう方向を後方と称し、その反対方向を前方と称する。また、前後方向と垂直な方向を側方とする。なお、この方向の定義は、電力変換装置１の設置姿勢を限定するものではない。 On the mounting surface 5a of the first substrate 5, in addition to the terminal block 8, electronic components (not shown) are mounted. A converter, an inverter, and the like are configured by the electronic components mounted on the first substrate 5 . In the following description, of the normal directions of the mounting surface 5a, the direction toward the base 6 is called rearward, and the opposite direction is called forward. Moreover, let the direction perpendicular|vertical to the front-back direction be a side. In addition, the definition of this direction does not limit the installation posture of the power conversion device 1 .
　筐体４は、第１のカバー２と第２のカバー３とを備え、電力変換装置１の外郭を構成する。第１のカバー２は、第１の基板５の搭載面５ａを覆う。第１のカバー２とベース６とは、いずれか一方に形成されたツメ（図示を省略）が他方に形成された凹み等に係合することで固定されている。 The housing 4 includes a first cover 2 and a second cover 3, and constitutes the outer shell of the power conversion device 1. The first cover 2 covers the mounting surface 5 a of the first substrate 5 . The first cover 2 and the base 6 are fixed by engaging a claw (not shown) formed on one of them with a recess or the like formed on the other.
　図６は、実施の形態１にかかる電力変換装置の第２のカバーを外した状態を示す分解斜視図である。第１のカバー２のうち第１の基板５の搭載面５ａを向く面の反対面２ｂには、搭載面５ａ側に凹んだ窪み１３が形成されている。窪み１３には、コンデンサ１２が挿入される。 FIG. 6 is an exploded perspective view showing a state in which the second cover of the power converter according to Embodiment 1 is removed. A recess 13 recessed toward the mounting surface 5a is formed on the surface 2b of the first cover 2 opposite to the surface facing the mounting surface 5a of the first substrate 5. As shown in FIG. A capacitor 12 is inserted into the recess 13 .
　図３に示すように、第１のカバー２には、端子台８を窪み１３から露出させる露出部２ａが形成されている。露出部２ａが、第１のカバー２のうち搭載面５ａを向く面と反対面２ｂとを貫通する孔である例が示されているがこれに限られず、縁から切り欠かれて端子台８を露出させる切欠きであってもよい。 As shown in FIG. 3, the first cover 2 has an exposed portion 2a that exposes the terminal block 8 from the recess 13. As shown in FIG. An example is shown in which the exposed portion 2a is a hole penetrating the surface facing the mounting surface 5a and the opposite surface 2b of the first cover 2, but the present invention is not limited to this. may be a notch that exposes the
　図７は、実施の形態１におけるコンデンサの斜視図である。コンデンサ１２は、本体１０と複数の端子１１とを備える。本体１０の形状は柱状形状であり、本実施の形態１では円柱形状である例を示している。複数の端子１１は、本体１０の一端面１４に設けられている。端子１１は、金属板をＬ字状に折り曲げて形成されており、折り曲げ箇所から一方側となる部分が本体１０の一端面１４に固定され、他方側となる部分が一端面１４から突出するようになっている。端子１１のうち一端面１４から突出する部分には貫通孔１１ａが形成されている。 FIG. 7 is a perspective view of the capacitor in Embodiment 1. FIG. The capacitor 12 has a body 10 and a plurality of terminals 11 . The shape of the main body 10 is a columnar shape, and in the first embodiment, an example of a columnar shape is shown. A plurality of terminals 11 are provided on one end surface 14 of the main body 10 . The terminal 11 is formed by bending a metal plate into an L-shape, and the portion on one side from the bent portion is fixed to one end surface 14 of the main body 10 , and the portion on the other side projects from the one end surface 14 . It has become. A through hole 11 a is formed in a portion of the terminal 11 protruding from the one end surface 14 .
　コンデンサ１２は、本体１０の一端面１４が第１の基板５の搭載面５ａに対して垂直となる姿勢で、第１のカバー２に形成された窪み１３に挿入される。また、第１のカバー２の反対面２ｂに形成された窪み１３へのコンデンサ１２の挿入方向は、搭載面５ａに対して垂直な方向すなわち前後方向となる。 The capacitor 12 is inserted into the recess 13 formed in the first cover 2 with one end surface 14 of the main body 10 perpendicular to the mounting surface 5 a of the first substrate 5 . Also, the direction in which the capacitor 12 is inserted into the recess 13 formed in the opposite surface 2b of the first cover 2 is the direction perpendicular to the mounting surface 5a, that is, the front-rear direction.
　ここで、窪み１３は、コンデンサ１２の形状に合わせた形状で形成されており、特にコンデンサ１２の本体１０が挿入される部分は、本体１０の側面に当接してベース６側から支持する形状で形成されている。 Here, the recess 13 is formed in a shape that matches the shape of the capacitor 12. In particular, the portion of the capacitor 12 into which the main body 10 is inserted has a shape that abuts on the side surface of the main body 10 and supports it from the base 6 side. formed.
　図８は、実施の形態１における第１のカバーに形成された窪み部分を拡大した部分拡大斜視図である。本実施の形態１のように本体１０が円柱形状であれば、窪み１３の底部の断面形状は、図４および図８等に示すように円弧面形状で形成されている。また、窪み１３の底部には孔１６が形成されている。また、窪み１３の底部には、孔１６の縁１６ａから窪み１３の縁１３ａまで伸びる溝１７が形成されている。 FIG. 8 is a partially enlarged perspective view enlarging the recessed portion formed in the first cover in Embodiment 1. FIG. If the main body 10 has a cylindrical shape as in the first embodiment, the cross-sectional shape of the bottom of the recess 13 is formed in an arcuate shape as shown in FIGS. 4 and 8 and the like. A hole 16 is formed in the bottom of the recess 13 . A groove 17 extending from the edge 16 a of the hole 16 to the edge 13 a of the recess 13 is formed in the bottom of the recess 13 .
　図９は、実施の形態１におけるコンデンサを窪みに差し込んだ状態を示す図である。図１０は、実施の形態１におけるコンデンサを固定した状態を示す図である。図１１は、実施の形態１におけるコンデンサが窪みに挿入された状態を示す側面図であって、第１のカバーを省略して示した図である。 FIG. 9 is a diagram showing a state in which the capacitor in Embodiment 1 is inserted into the recess. FIG. 10 is a diagram showing a state in which the capacitor is fixed according to Embodiment 1. FIG. FIG. 11 is a side view showing a state in which the capacitor according to Embodiment 1 is inserted into the recess, and is a view with the first cover omitted.
　図９および図１１に示すように、窪み１３に挿入されたコンデンサ１２の複数の端子１１のそれぞれは、露出部２ａを通じて窪み１３から露出している端子台８に重なる。端子１１と端子台８が重なると、互いに形成された貫通孔１１ａとねじ穴８ａとが重なる。この状態で、図１０に示すように、前方からねじ穴８ａにねじ１５をねじ込むことで、端子１１と端子台８とが締結される。これにより、端子１１と端子台８とを介してコンデンサ１２と第１の基板５に形成された回路と第１の基板５に搭載された電子部品とが電気的に接続される。なお、端子１１と端子台８が重なるといった場合には、端子１１と端子台８とが当接している場合だけでなく、端子１１と端子台８とが当接しておらず前後方向に沿って見た場合に端子１１と端子台８とが重なっている状態も含む。 As shown in FIGS. 9 and 11, each of the plurality of terminals 11 of the capacitor 12 inserted into the recess 13 overlaps the terminal block 8 exposed from the recess 13 through the exposed portion 2a. When the terminal 11 and the terminal block 8 overlap each other, the through hole 11a and the screw hole 8a formed with each other overlap. In this state, as shown in FIG. 10, the terminal 11 and the terminal block 8 are fastened by screwing the screw 15 into the screw hole 8a from the front. As a result, the capacitor 12 , the circuit formed on the first substrate 5 and the electronic component mounted on the first substrate 5 are electrically connected via the terminals 11 and the terminal block 8 . In addition, when the terminal 11 and the terminal block 8 overlap, not only when the terminal 11 and the terminal block 8 are in contact, but also when the terminal 11 and the terminal block 8 are not in contact and A state in which the terminal 11 and the terminal block 8 overlap when viewed is also included.
　図１から図４に戻って、第２のカバー３は、第１のカバー２に対して反対面２ｂ側に設けられる。第２のカバー３は、板部２４と当接部２５とを備える。板部２４は、窪み１３を覆う板状の部材である。当接部２５は、窪み１３を覆った状態で窪み１３側に向けて突出するように形成されている。当接部２５は、窪み１３を覆った状態で窪み１３に侵入してコンデンサ１２の本体１０に当接する。当接部２５が本体１０に当接することで、コンデンサ１２は第１のカバー２と第２のカバー３とに挟み込まれて固定される。なお、窪み１３の深さがコンデンサ１２の本体１０の直径と等しければ、当接部２５を形成しなくても板部２４を本体１０に当接させることができる。なお、コンデンサ１２は、端子１１と端子台８とがねじ１５で締結されているので、第２のカバー３がなくてもコンデンサ１２の脱落は防がれる。 Returning to FIG. 1 to FIG. 4, the second cover 3 is provided on the side opposite to the first cover 2 2b. The second cover 3 has a plate portion 24 and a contact portion 25 . The plate portion 24 is a plate-like member that covers the recess 13 . The contact portion 25 is formed so as to protrude toward the recess 13 while covering the recess 13 . The contact portion 25 enters the recess 13 while covering the recess 13 and contacts the main body 10 of the capacitor 12 . The abutting portion 25 abuts on the main body 10 , so that the capacitor 12 is sandwiched between the first cover 2 and the second cover 3 and fixed. If the depth of the recess 13 is equal to the diameter of the main body 10 of the capacitor 12, the plate portion 24 can be brought into contact with the main body 10 without forming the contact portion 25. FIG. Since the terminals 11 and the terminal block 8 are fastened with the screws 15, the capacitor 12 can be prevented from coming off even without the second cover 3. FIG.
　第２の基板７は、第２のカバー３のうち当接部２５が形成される面とは反対面側に搭載される。第２の基板７は、第１の基板５に構成されたコンバータおよびインバータを制御するために電子部品（図示を省略）の搭載および回路の形成がなされた制御基板である。電力変換装置１では、コンバータおよびインバータが制御されることで、交流電圧から直流電圧への変換および直流電圧から交流電圧への変換等が行われる。 The second substrate 7 is mounted on the side of the second cover 3 opposite to the side on which the contact portion 25 is formed. The second board 7 is a control board on which electronic components (not shown) are mounted and circuits are formed in order to control the converter and inverter configured on the first board 5 . In the power conversion device 1, conversion from AC voltage to DC voltage, conversion from DC voltage to AC voltage, and the like are performed by controlling the converter and the inverter.
　電力変換装置１は、壁面等の設置面に取り付けて使用される。電力変換装置１は、ベース６のうち第１の基板５が設けられた面の反対面を、すなわち後方を向く面を設置面に向けて取り付けられる。電力変換装置１が設置面に取り付けられた状態で、第１の基板５の搭載面５ａおよびコンデンサ１２の本体１０の軸方向は設置面と平行となり、本体１０の一端面１４は設置面と垂直となる。 The power conversion device 1 is used by being attached to an installation surface such as a wall surface. The power conversion device 1 is mounted with the surface of the base 6 opposite to the surface on which the first substrate 5 is provided, that is, the rearward surface facing the installation surface. When the power conversion device 1 is attached to the installation surface, the axial direction of the mounting surface 5a of the first substrate 5 and the main body 10 of the capacitor 12 is parallel to the installation surface, and one end surface 14 of the main body 10 is perpendicular to the installation surface. becomes.
　電力変換装置１は、設置面に設置されてからの使用期間に応じて、コンデンサ１２の交換が行われる。コンデンサ１２の交換時には、筐体４からコンデンサ１２を取り外し、新しいコンデンサ１２を筐体４に取り付ける必要がある。 In the power conversion device 1, the capacitor 12 is replaced according to the period of use after being installed on the installation surface. When replacing the capacitor 12 , it is necessary to remove the capacitor 12 from the housing 4 and attach a new capacitor 12 to the housing 4 .
　本実施の形態１にかかる電力変換装置１では、第１のカバー２からのコンデンサ１２の着脱が、窪み１３への前後方向に沿った挿入または前後方向に沿った抜き取りで行うことができる。したがって、コンデンサ１２を交換する場合には、まず第２のカバー３が取り外される。次に、端子台８にねじ込まれたねじ１５が取り外され、コンデンサ１２が窪み１３から前方に引き抜かれる。その後、新しいコンデンサ１２が窪み１３に挿入され、第２のカバー３が取り付けられる。 In the power converter 1 according to the first embodiment, the capacitor 12 can be attached and detached from the first cover 2 by inserting it into the recess 13 along the front-back direction or removing it along the front-back direction. Therefore, when replacing the capacitor 12, the second cover 3 is first removed. Next, the screw 15 screwed into the terminal block 8 is removed, and the capacitor 12 is pulled forward from the recess 13 . A new capacitor 12 is then inserted into the recess 13 and the second cover 3 is attached.
　ここで、電力変換装置１が取り付けられた設置面には電力変換装置１以外の他の装置も設置される。したがって、電力変換装置１の側方には他の装置が配置される場合がある。このような場合であっても、本実施の形態１にかかる電力変換装置１では、コンデンサ１２の交換時に着脱される第２のカバー３およびコンデンサ１２の前後方向への移動だけで済むので、電力変換装置１の側方に配置された他の装置が邪魔にならない。 Here, devices other than the power conversion device 1 are also installed on the installation surface to which the power conversion device 1 is attached. Therefore, other devices may be arranged on the side of the power electronics device 1 . Even in such a case, in the power conversion device 1 according to the first embodiment, only the second cover 3 and the capacitor 12, which are detachable when replacing the capacitor 12, need to be moved in the front-rear direction. Other devices arranged on the side of the conversion device 1 do not get in the way.
　例えば、コンデンサを側方に引き抜いて取り外す必要がある電力変換装置では、側方に他の装置が設置されている場合、電力変換装置自体を取り外さなければコンデンサを引き抜くことができず交換作業の工数が増加してしまう。また、電力変換装置自体を取り外さずにコンデンサの交換が行われるようにするには、電力変換装置の側方に大きなスペースの確保が必要になるため、電力変換装置の設置スペースが大きくなってしまう。 For example, in a power converter that needs to be removed by pulling out the capacitor to the side, if another device is installed on the side, the capacitor cannot be pulled out unless the power converter itself is removed, which reduces the man-hours required for replacement work. increases. In addition, in order to replace the capacitor without removing the power conversion device itself, it is necessary to secure a large space on the side of the power conversion device, so the installation space for the power conversion device becomes large. .
　一方、本実施の形態１にかかる電力変換装置１では、上述したように第２のカバー３とコンデンサ１２の前後方向への移動でコンデンサ１２を交換できるので、側方に他の装置が設置されていても電力変換装置１自体を取り外さずにコンデンサ１２の交換が行える。また、コンデンサ交換用のスペースを電力変換装置１の側方に確保する必要がないので、設置スペースの省スペース化を図ることができる。 On the other hand, in the power conversion device 1 according to the first embodiment, as described above, the capacitor 12 can be replaced by moving the second cover 3 and the capacitor 12 in the front-rear direction. The capacitor 12 can be replaced without removing the power converter 1 itself. In addition, since it is not necessary to secure a space for replacing the capacitor on the side of the power converter 1, the installation space can be saved.
　また、コンデンサ１２の着脱が前後方向の移動で行えるので、コンデンサ１２の側方に他の部品を配置することが可能となり、他の部品の配置の自由度が向上する。また、コンデンサ１２を側方に引き抜く場合には、コンデンサ１２を引き抜く軌道では搭載面５ａに部品を配置することができない。そのため、搭載面５ａのうち部品を配置できるスペースが減ってしまう。一方、本実施の形態１にかかる電力変換装置１では、コンデンサ１２を前後方向に引き抜くため、側方に引き抜く場合と比べて搭載面５ａ上の部品を配置できるスペースが増える。これにより、搭載面５ａでの部品の実装密度を高めることができ、第１の基板５の小型化を図ることができる。 In addition, since the capacitor 12 can be attached and detached by moving in the front-rear direction, it becomes possible to arrange other parts on the sides of the capacitor 12, thereby improving the degree of freedom in arranging the other parts. Further, when the capacitor 12 is pulled out sideways, the components cannot be placed on the mounting surface 5a on the path along which the capacitor 12 is pulled out. Therefore, the space on the mounting surface 5a for arranging components is reduced. On the other hand, in the power conversion device 1 according to the first embodiment, since the capacitor 12 is pulled out in the front-rear direction, the space for arranging the components on the mounting surface 5a increases compared to the case where the capacitor 12 is pulled out sideways. As a result, the mounting density of components on the mounting surface 5a can be increased, and the size of the first substrate 5 can be reduced.
　また、窪み１３にコンデンサ１２を挿入したときに端子１１と重なる位置に端子台８が露出しているため、端子１１と端子台８とを接続するための位置合わせが不要であり作業性が向上する。また、端子台８に形成されたねじ穴８ａにねじ１５をねじ込むことで端子１１と端子台８とが接続された状態で固定されているので、接続状態が強固に維持される。したがって、振動および衝撃等によって端子１１と端子台８との接続が断たれにくい。 In addition, since the terminal block 8 is exposed at a position overlapping the terminal 11 when the capacitor 12 is inserted into the recess 13, alignment for connecting the terminal 11 and the terminal block 8 is not required, and workability is improved. do. Moreover, since the terminal 11 and the terminal block 8 are fixed in a connected state by screwing the screw 15 into the screw hole 8a formed in the terminal block 8, the connected state is maintained firmly. Therefore, the connection between the terminal 11 and the terminal block 8 is less likely to be cut off due to vibration, impact, or the like.
　また、第１の基板５の搭載面５ａに設けられた端子台８にコンデンサ１２の端子１１が直接接続されるので、コンデンサ１２から第１の基板５までの接続経路の短縮化を図ることができる。これにより、電気的ノイズが発生しにくくなり、電気的ノイズの影響も受けにくくなる。一般に、電気的な接続経路が長いと、周囲に放出される電気的ノイズの強度が増す。その結果、周囲に配置される他の電子機器を誤動作させるおそれがあるため、他の電子機器を離して設置する必要が生じる。一方、本実施の形態１では、上述したようにコンデンサ１２から第１の基板５までの接続経路の短縮化が図られているため、周囲に放出する電気的ノイズの強度を抑制でき、他の電子機器を電力変換装置１の近くに配置することができる。 Moreover, since the terminals 11 of the capacitor 12 are directly connected to the terminal block 8 provided on the mounting surface 5a of the first substrate 5, the connection path from the capacitor 12 to the first substrate 5 can be shortened. can. As a result, electrical noise is less likely to occur, and it is less likely to be affected by electrical noise. In general, longer electrical connection paths increase the intensity of electrical noise emitted to the surroundings. As a result, there is a risk of malfunctioning other electronic devices arranged in the surrounding area, so it is necessary to install the other electronic devices away from each other. On the other hand, in the first embodiment, as described above, the connection path from the capacitor 12 to the first substrate 5 is shortened, so that the intensity of the electrical noise emitted to the surroundings can be suppressed. An electronic device can be arranged near the power conversion device 1 .
　また、第１の基板５の搭載面５ａに設けられた端子台８は金属の板をＵ字状に折り曲げて形成された剛体である。すなわち、コンデンサ１２と第１の基板５との接続には、ハーネスのような軟体が使用されていない。ハーネスのような軟体が用いられた装置をロボットで組み立てるには、多くのセンサー類の設置および部品準備の際の位置決め作業が必要となる。そのため、ハーネスを用いた装置をロボットで組み立てようとすると、設備費用の増大および作業工数の増加が懸念される。一方、本実施の形態１にかかる電力変換装置１では、上述したようにコンデンサ１２と第１の基板５との接続にハーネスのような軟体が用いられていないため、ロボット等の自動機で組立てが可能であり、生産性の向上を図ることができる。 Also, the terminal block 8 provided on the mounting surface 5a of the first substrate 5 is a rigid body formed by bending a metal plate into a U shape. That is, a soft body such as a harness is not used for connecting the capacitor 12 and the first substrate 5 . In order to assemble a device that uses a soft body such as a harness with a robot, it is necessary to position many sensors and prepare parts. Therefore, if a robot is used to assemble a device using a harness, there is a concern that the equipment cost will increase and the number of man-hours will increase. On the other hand, in the power conversion device 1 according to the first embodiment, as described above, since a soft body such as a harness is not used for connecting the capacitor 12 and the first substrate 5, assembly is performed by an automatic machine such as a robot. is possible, and productivity can be improved.
　また、金属の板で形成された端子１１と端子台８の平坦面同士を接触させて接続しているので、接触面積が広くなり接触抵抗が抑えられる。また、端子１１から端子台８への電熱性も向上するため、コンデンサ１２の本体１０で発生した熱の放熱性の向上が図られる。これにより、コンデンサ１２の長寿命化が図られる。 In addition, since the terminal 11 formed of a metal plate and the flat surfaces of the terminal block 8 are brought into contact with each other and connected, the contact area is widened and the contact resistance is suppressed. In addition, since the electric heat transfer from the terminal 11 to the terminal block 8 is also improved, the heat dissipating property of the main body 10 of the capacitor 12 is improved. As a result, the life of the capacitor 12 can be extended.
　また、コンデンサ１２は、第１のカバー２と第２のカバー３とに挟まれて保持されるため、振動および衝撃が加わった際に窪み１３の内部でずれにくく、端子１１と端子台８との接続部分に負荷が加わりにくい。その結果、電力変換装置１の耐振動性の向上が図られる。 Further, since the capacitor 12 is sandwiched between the first cover 2 and the second cover 3 and held, the capacitor 12 is less likely to be displaced inside the recess 13 when vibrations and impacts are applied. load is less likely to be applied to the connection part. As a result, the vibration resistance of the power converter 1 is improved.
　また、本体１０の側面が第１のカバー２と第２のカバー３とに挟まれて保持されるとともに、ねじ１５によって端子１１が端子台８に固定されているので、本体１０のうち端子１１が設けられた一端面１４の反対面となる他端面に、窪み１３内でコンデンサ１２を固定するための部材を当接させる必要がない。したがって、軸方向の長さが異なる本体１０であっても、本体１０の直径が等しく軸方向に沿った長さが窪み１３に納まる長さであれば窪み１３にコンデンサ１２を固定することができる。したがって、異なるコンデンサ１２の種類ごとに専用の第１のカバー２を用意する必要がなくなり、製造コストの抑制を図ることができる。なお、板部２４または当接部２５が弾性を備えていてもよい。このようにすれば、窪み１３の深さがコンデンサ１２の本体１０の直径より大きい場合でも、板部２４が変形することで、板部２４と窪み１３との間でコンデンサ１２を挟持できる。また、板部２４の復元力により、コンデンサ１２がより強固に保持される。 Further, since the side surface of the main body 10 is sandwiched between the first cover 2 and the second cover 3 and held, and the terminal 11 is fixed to the terminal block 8 by the screw 15, the terminal 11 of the main body 10 is held. It is not necessary to bring a member for fixing the capacitor 12 in the recess 13 into contact with the other end surface opposite to the one end surface 14 provided with the . Therefore, even if the main bodies 10 have different lengths in the axial direction, the capacitors 12 can be fixed in the recesses 13 if the diameters of the main bodies 10 are the same and the length along the axial direction is a length that can be accommodated in the recesses 13 . . Therefore, it is not necessary to prepare a dedicated first cover 2 for each different type of capacitor 12, and the manufacturing cost can be suppressed. Note that the plate portion 24 or the contact portion 25 may have elasticity. In this way, even if the depth of recess 13 is larger than the diameter of main body 10 of capacitor 12 , capacitor 12 can be sandwiched between plate portion 24 and recess 13 by deforming plate portion 24 . Also, the restoring force of the plate portion 24 holds the capacitor 12 more firmly.
　また、第１の基板５の搭載面５ａは、電気部品が搭載されたり、回路が形成されたりした高電位部を含む導電部（以下では高圧導電部と呼称）である。高圧導電部を備える装置では、安全性の確保のため高圧導電部への接触の困難性が要求される場合がある。ここで、高圧導電部である搭載面５ａは第１のカバー２で覆われており、高圧導電部に触れるためには第１のカバー２を取り外す必要がある。本実施の形態１では、第１のカバー２の窪み１３にコンデンサ１２が挿入されており、ベース６とコンデンサ１２との間に第１のカバー２が挟み込まれた状態となっている。また、第１のカバー２に形成された露出部２ａを通じてコンデンサ１２の端子１１が工具によって操作されるねじ１５によって搭載面５ａに設けられた端子台８に固定されている。そのため、ねじ１５を外して窪み１３からコンデンサ１２を抜き取らなければ、第１のカバー２をベース６から取り外すことができない。すなわち、工具を用いてねじ１５を操作しなければ高圧導電部に触れることはできず、電力変換装置１の安全性の向上が図られている。例えば、実施の形態１にかかる電力変換装置１は、保護等級であるＩＰ２０を満足することができる。 Further, the mounting surface 5a of the first substrate 5 is a conductive portion (hereinafter referred to as a high voltage conductive portion) including a high potential portion on which electrical components are mounted or circuits are formed. Devices with high-voltage conductive parts are sometimes required to make contact with the high-voltage conductive parts difficult in order to ensure safety. Here, the mounting surface 5a, which is the high-voltage conductive portion, is covered with the first cover 2, and the first cover 2 must be removed in order to touch the high-voltage conductive portion. In Embodiment 1, the capacitor 12 is inserted into the recess 13 of the first cover 2 , and the first cover 2 is sandwiched between the base 6 and the capacitor 12 . Terminals 11 of the capacitor 12 are fixed to a terminal block 8 provided on the mounting surface 5a through an exposed portion 2a formed on the first cover 2 by a screw 15 operated by a tool. Therefore, the first cover 2 cannot be removed from the base 6 unless the screws 15 are removed and the capacitor 12 is extracted from the recess 13 . That is, unless the screw 15 is operated using a tool, the high-voltage conductive portion cannot be touched, and the safety of the power conversion device 1 is improved. For example, the power conversion device 1 according to the first embodiment can satisfy IP20, which is a protection class.
　また、窪み１３の内側では溝１７が形成された部分でコンデンサ１２の本体１０との間にすき間が形成される。溝１７の端部は孔１６の縁１６ａと窪みの縁１３ａにつながっているので、窪み１３にコンデンサ１２が挿入された状態であっても孔１６と溝１７を通して本体１０の周囲を空気が流通することができる。すなわち、窪み１３に挿入されたコンデンサ１２の本体１０の周囲に空気を流通させて放熱性を向上させることができる。 Also, inside the depression 13, a gap is formed between the capacitor 12 and the main body 10 at the portion where the groove 17 is formed. Since the end of the groove 17 is connected to the edge 16a of the hole 16 and the edge 13a of the recess, air flows around the body 10 through the hole 16 and the groove 17 even when the capacitor 12 is inserted into the recess 13. can do. That is, air can be circulated around the main body 10 of the capacitor 12 inserted into the recess 13 to improve heat dissipation.
　また、第２の基板７とコンデンサ１２との間に第２のカバー３の板部２４が介在しているので、第２の基板７とコンデンサ１２との間の絶縁を板部２４で確保することができる。したがって、第２の基板７とコンデンサ１２との絶縁距離の確保が必要なくなり、第２の基板７をコンデンサ１２に近づけて配置することが可能となる。これにより、電力変換装置１の小型化を図ることが可能となる。 Further, since the plate portion 24 of the second cover 3 is interposed between the second substrate 7 and the capacitor 12, the plate portion 24 ensures insulation between the second substrate 7 and the capacitor 12. be able to. Therefore, it is not necessary to secure an insulating distance between the second substrate 7 and the capacitor 12, and the second substrate 7 can be arranged close to the capacitor 12. FIG. This makes it possible to reduce the size of the power converter 1 .
　図１２は、実施の形態１の変形例１にかかるコンデンサと端子台とを一端面側から見た図である。本変形例１では、１つのコンデンサ１２に接続される複数の端子台８同士が、第１の基板５の搭載面５ａからの高さが互いに異なる。具体的には、端子台８１の高さｈ１よりも端子台８２の高さｈ２のほうが低くなっている。 FIG. 12 is a view of a capacitor and a terminal block according to Modification 1 of Embodiment 1 as viewed from one end face side. In Modification 1, a plurality of terminal blocks 8 connected to one capacitor 12 have different heights from the mounting surface 5 a of the first substrate 5 . Specifically, the height h2 of the terminal block 82 is lower than the height h1 of the terminal block 81. As shown in FIG.
　本変形例１では、１つのコンデンサに設けられた複数の端子１１は、コンデンサ１２が窪み１３に挿入された状態で搭載面５ａからの高さが互いに異なる。具体的には、端子１１１の高さｈ３よりも端子１１２の高さｈ４のほうが低くなっている。 In Modification 1, the plurality of terminals 11 provided on one capacitor have different heights from the mounting surface 5a when the capacitor 12 is inserted into the recess 13 . Specifically, the height h4 of the terminal 112 is lower than the height h3 of the terminal 111. As shown in FIG.
　また、高さｈ１と高さｈ３が等しく、高さｈ２と高さｈ４とが等しくなっており、コンデンサ１２が窪み１３に挿入された状態で、端子台８１と端子１１１とが当接し、端子台８２と端子１１２とが当接する。 Further, the height h1 and the height h3 are equal, and the height h2 and the height h4 are equal, and with the capacitor 12 inserted into the recess 13, the terminal block 81 and the terminal 111 are in contact with each other, and the terminal The base 82 and the terminal 112 abut.
　コンデンサ１２の端子１１には極性があり、極性を間違えて端子台８に接続すると電力変換装置１が期待通りの動作をしなくなってしまう。本変形例１のように、端子台８１と端子台８２の搭載面５ａからの高さ、および端子１１１と端子１１２の搭載面５ａからの高さを異ならせることで、図１２に示した状態からコンデンサ１２を本体１０の中心軸１０ａを中心に１８０度回転させた場合には、端子１１２は端子台８１に当接するものの、端子１１１は端子台８２に当接できない。したがって、図１２に示す状態を正しい極性でコンデンサ１２が接続された状態とすれば、中心軸１０ａを中心に１８０度回転させた場合、すなわち極性を間違えた場合にはコンデンサ１２を窪み１３に挿入しても端子１１１を端子台８２に接続させることができない。したがって、変形例１では、極性を間違えた状態でコンデンサ１２が端子台８に接続されてしまうことを防ぐことができる。このように、一端面１４に対して、中心軸１０ａと一端面１４との交点を中心とする点対称とならないように端子１１を設け、コンデンサ１２が正しい極性となる姿勢の時に端子１１と当接する高さおよび位置に端子台８が設けられることで、極性を間違えた状態でコンデンサ１２が端子台８に接続されてしまうことを防ぐことができる。 The terminal 11 of the capacitor 12 has a polarity, and if it is connected to the terminal block 8 with the wrong polarity, the power conversion device 1 will not operate as expected. By varying the heights of the terminal blocks 81 and 82 from the mounting surface 5a and the heights of the terminals 111 and 112 from the mounting surface 5a, as in Modification 1, the state shown in FIG. When the capacitor 12 is rotated by 180 degrees about the central axis 10a of the main body 10, the terminal 112 contacts the terminal block 81, but the terminal 111 cannot contact the terminal block 82. FIG. Therefore, if the state shown in FIG. 12 is a state in which the capacitor 12 is connected with the correct polarity, the capacitor 12 is inserted into the recess 13 when it is rotated 180 degrees about the central axis 10a, that is, when the polarity is wrong. However, the terminal 111 cannot be connected to the terminal block 82. Therefore, in Modification 1, it is possible to prevent the capacitor 12 from being connected to the terminal block 8 with the wrong polarity. In this way, the terminal 11 is provided on the one end face 14 so as not to be symmetrical about the intersection of the central axis 10a and the one end face 14, and the capacitor 12 contacts the terminal 11 when it is in the correct polarity posture. By providing the terminal block 8 at the contact height and position, it is possible to prevent the capacitor 12 from being connected to the terminal block 8 with the wrong polarity.
　図１３は、実施の形態１の変形例２にかかるコンデンサと端子台とを一端面側から見た図である。本変形例２では、１つのコンデンサ１２に接続される複数の端子台８同士の搭載面５ａからの高さは等しいが、中心軸１０ａからの距離が互いに異なる。具体的には、端子台８１のねじ穴８ａの中心と中心軸１０ａとの距離ｄ１よりも、端子台８２のねじ穴８ａの中心と中心軸１０ａとの距離ｄ２のほうが短くなっている。 FIG. 13 is a view of a capacitor and a terminal block according to Modification 2 of Embodiment 1 as viewed from one end face side. In Modification 2, the heights from the mounting surface 5a of the plurality of terminal blocks 8 connected to one capacitor 12 are the same, but the distances from the central axis 10a are different. Specifically, the distance d2 between the center of the screw hole 8a of the terminal block 82 and the central axis 10a is shorter than the distance d1 between the center of the screw hole 8a of the terminal block 81 and the central axis 10a.
　また、１つのコンデンサに設けられた複数の端子１１は、中心軸１０ａからの距離が互いに異なっている。具体的には、端子１１１の貫通孔１１ａの中心と中心軸１０ａとの距離ｄ３よりも、端子１１２の貫通孔１１ａの中心と中心軸１０ａとの距離ｄ４のほうが短くなっている。 Also, the plurality of terminals 11 provided on one capacitor have different distances from the central axis 10a. Specifically, the distance d4 between the center of through hole 11a of terminal 112 and central axis 10a is shorter than the distance d3 between the center of through hole 11a of terminal 111 and central axis 10a.
　また、距離ｄ１と距離ｄ３が等しく、距離ｄ２と距離ｄ４とが等しくなっており、コンデンサ１２が窪みに挿入された状態で、端子台８１と端子１１１とが当接し、端子台８２と端子１１２とが当接する。 Further, the distance d1 is equal to the distance d3, and the distance d2 is equal to the distance d4. abuts.
　変形例２に示した構成であっても、一端面１４に対して、中心軸１０ａと一端面１４との交点を中心とする点対称とならないように端子１１を設けることができる。したがって、コンデンサ１２が正しい極性となる姿勢の時に端子１１と当接する高さおよび位置に端子台８が設けられることで、極性を間違えた状態でコンデンサ１２が端子台８に接続されてしまうことを防ぐことができる。 Even in the configuration shown in Modified Example 2, the terminal 11 can be provided so as not to be point-symmetrical with respect to the one end face 14 about the intersection of the central axis 10a and the one end face 14 . Therefore, by providing the terminal block 8 at a height and position where it contacts the terminal 11 when the capacitor 12 is in the correct polarity posture, it is possible to prevent the capacitor 12 from being connected to the terminal block 8 with the wrong polarity. can be prevented.
　図１４は、実施の形態１の変形例３にかかるコンデンサと端子台とを一端面側から見た図である。本変形例３では、１つのコンデンサ１２に接続される複数の端子台８同士の搭載面５ａからの高さｈ５，ｈ６は等しく、中心軸１０ａとねじ穴８ａの中心との距離ｄ５，ｄ６も等しい。また、端子１１同士の搭載面５ａからの高さｈ７，ｈ８は等しく、中心軸１０ａと貫通孔１１ａとの距離ｄ７，ｄ８も等しい。また、高さｈ５と高さｈ７が等しく、高さｈ６と高さｈ８が等しい。しかしながら、中心軸１０ａの搭載面５ａからの高さｈ９が、高さｈ５，ｈ６，ｈ７，ｈ８と異なっている。 FIG. 14 is a view of a capacitor and a terminal block according to Modification 3 of Embodiment 1 as seen from one end face side. In Modification 3, the heights h5 and h6 of the plurality of terminal blocks 8 connected to one capacitor 12 from the mounting surface 5a are equal, and the distances d5 and d6 between the central axis 10a and the center of the screw hole 8a are also equal. equal. Further, the heights h7 and h8 of the terminals 11 from the mounting surface 5a are equal, and the distances d7 and d8 between the central axis 10a and the through hole 11a are also equal. Moreover, the height h5 and the height h7 are equal, and the height h6 and the height h8 are equal. However, the height h9 of the center shaft 10a from the mounting surface 5a is different from the heights h5, h6, h7 and h8.
　変形例３に示した構成であっても一端面１４に対して、中心軸１０ａと一端面１４との交点を中心とする点対称とならないように端子１１を設けることができる。したがって、コンデンサ１２が正しい極性となる姿勢の時に端子１１と当接する高さおよび位置に端子台８が設けられることで、極性を間違えた状態でコンデンサ１２が端子台８に接続されてしまうことを防ぐことができる。 Even in the configuration shown in Modified Example 3, the terminals 11 can be provided so as not to be point-symmetrical with respect to the one end face 14 about the intersection of the central axis 10a and the one end face 14 . Therefore, by providing the terminal block 8 at a height and position where it contacts the terminal 11 when the capacitor 12 is in the correct polarity posture, it is possible to prevent the capacitor 12 from being connected to the terminal block 8 with the wrong polarity. can be prevented.
　図１５は、実施の形態１の変形例４にかかるコンデンサと端子台とを前方から見た図である。本変形例４では、コンデンサ１２が窪み１３に挿入された状態で、端子台８１のねじ穴８ａの中心と一端面１４との距離ｄ９と、端子台８２のねじ穴８ａの中心と一端面１４との距離ｄ１０とが異なっている。 FIG. 15 is a front view of a capacitor and a terminal block according to Modification 4 of Embodiment 1. FIG. In Modified Example 4, when the capacitor 12 is inserted into the recess 13, the distance d9 between the center of the screw hole 8a of the terminal block 81 and the one end face 14 and the distance d9 between the center of the screw hole 8a of the terminal block 82 and the one end face 14 is different from the distance d10.
　また、コンデンサ１２の端子１１１の貫通孔１１ａの中心と一端面１４との距離ｄ１１と、端子１１２の貫通孔１１ａの中心と一端面１４との距離ｄ１２との距離が異なっている。また、距離ｄ９と距離ｄ１１は等しく、距離ｄ１０と距離ｄ１２は等しい。 Also, the distance d11 between the center of the through hole 11a of the terminal 111 of the capacitor 12 and the one end surface 14 and the distance d12 between the center of the through hole 11a of the terminal 112 and the one end surface 14 are different. Also, the distance d9 and the distance d11 are equal, and the distance d10 and the distance d12 are equal.
　本変形例４のように構成した場合には、図１５に示す状態を正しい極性でコンデンサ１２が接続された状態とすれば、中心軸１０ａを中心に１８０度回転させた場合、すなわち極性を間違えた場合にはコンデンサ１２を窪み１３に挿入しても端子１１の貫通孔１１ａと端子台８のねじ穴８ａとが重ならないため、ねじ１５でお互いを締結することができない。したがって、本変形例４では、極性を間違えた状態でコンデンサ１２が端子台８に接続されてしまうことを防ぐことができる。 15 is the state in which the capacitor 12 is connected with the correct polarity, when the capacitor 12 is rotated 180 degrees about the central axis 10a, that is, the polarity is wrong. In this case, even if the capacitor 12 is inserted into the recess 13, the through hole 11a of the terminal 11 and the screw hole 8a of the terminal block 8 do not overlap, so that the screw 15 cannot be used to fasten them together. Therefore, in Modification 4, it is possible to prevent the capacitor 12 from being connected to the terminal board 8 with the wrong polarity.
　図１６は、実施の形態１の変形例５にかかる第１のカバーの露出部部分を拡大した部分拡大斜視図である。図１７は、図１６に示した露出部部分に板金がはめ込まれた状態を示す図である。 FIG. 16 is a partially enlarged perspective view enlarging the exposed portion of the first cover according to Modification 5 of Embodiment 1. FIG. 17 is a diagram showing a state in which a sheet metal is fitted into the exposed portion shown in FIG. 16. FIG.
　本変形例５では、第１のカバー２に２つの窪み１３Ａ，１３Ｂが形成されている。また、２つの窪み１３Ａ，１３Ｂのそれぞれにコンデンサ１２が挿入される。すなわち、本変形例５では、２つのコンデンサ１２が電力変換装置１に設けられる。 In Modification 5, the first cover 2 is formed with two recesses 13A and 13B. A capacitor 12 is inserted into each of the two recesses 13A and 13B. That is, in Modification 5, two capacitors 12 are provided in the power converter 1 .
　第１のカバー２の露出部２ａ部分には、第１の板金２１、第２の板金２２、および第３の板金２３を差し込むことが可能となっている。本変形例５では、第１の板金２１、第２の板金２２、および第３の板金２３を用いることで、コンデンサ１２同士を並列に接続したり直列に接続したりすることが可能となっている。 A first metal sheet 21, a second metal sheet 22, and a third metal sheet 23 can be inserted into the exposed portion 2a of the first cover 2. In Modification 5, by using the first sheet metal 21, the second sheet metal 22, and the third sheet metal 23, it is possible to connect the capacitors 12 in parallel or in series. there is
　図１８は、変形例５において板金を用いてコンデンサ同士を並列に接続した状態を示す図である。図１８に示すようにコンデンサ１２同士を並列に接続する場合には、第１の板金２１と第２の板金２２が用いられる。端子台８は、図１８において示した２か所のＡ部分に立ち上げられて、端子１１と接続されている。すなわち、コンデンサ１２同士を並列に接続する場合には第１の基板５に２つの端子台８が設けられる。第１の板金２１と第２の板金２２は、コンデンサ１２同士を並列に接続させる並列用板金である。 FIG. 18 is a diagram showing a state in which capacitors are connected in parallel using sheet metal in modification 5. FIG. When the capacitors 12 are connected in parallel as shown in FIG. 18, a first sheet metal 21 and a second sheet metal 22 are used. The terminal block 8 is raised at two portions A shown in FIG. 18 and connected to the terminals 11 . That is, two terminal blocks 8 are provided on the first substrate 5 when the capacitors 12 are connected in parallel. The first sheet metal 21 and the second sheet metal 22 are parallel sheet metals for connecting the capacitors 12 in parallel.
　図１９は、変形例５において板金を用いてコンデンサ同士を直列に接続した状態を示す図である。図１９に示すようにコンデンサ１２同士を直列に接続する場合には、第３の板金２３が用いられる。端子台８は、図１９において示した３カ所のＢ部分に立ち上げられて、端子１１と接続されている。すなわち、コンデンサ１２同士を直列に接続する場合には第１の基板５に３つの端子台８が設けられる。３つの端子台８のうちの１つは中間電位を取るために設けられている。第３の板金２３は、コンデンサ１２同士を直列に接続させる直列用板金である。なお、中間電位を取る必要がない場合には、その分の端子台８が不要となる。したがって、中間電位を取る必要がない場合には、端子台８は２カ所に立ち上げられていればよい。 FIG. 19 is a diagram showing a state in which capacitors are connected in series using sheet metal in modification 5. FIG. When the capacitors 12 are connected in series as shown in FIG. 19, a third metal plate 23 is used. The terminal block 8 is raised at three portions B shown in FIG. 19 and connected to the terminals 11 . That is, when connecting the capacitors 12 in series, three terminal blocks 8 are provided on the first substrate 5 . One of the three terminal blocks 8 is provided for taking an intermediate potential. The third sheet metal 23 is a serial sheet metal for connecting the capacitors 12 in series. In addition, when it is not necessary to take an intermediate potential, the terminal block 8 corresponding to that is not required. Therefore, if it is not necessary to take an intermediate potential, the terminal block 8 may be raised at two locations.
　図２０は、変形例５における第１の板金の斜視図である。第１の板金２１は、金属の板を折り曲げて形成されている。第１の板金２１は、コンデンサ１２の端子１１と重なる２つの接続部２１ｂを有する。第１の板金２１は、２つの接続部２１ｂ同士をつなぐ連結部２１ａを有する。接続部２１ｂには孔２１ｃ，２１ｄが形成されている。図１８に示したＡ部分のように端子台８およびコンデンサ１２の端子１１と接続される接続部２１ｂに形成された孔２１ｃの内周面にねじ山は形成されていない。これは、図１０に示したねじ１５は端子台８に形成されたねじ穴８ａにねじ込まれるため、孔２１ｃの内周面にねじ山が形成されている必要がないからである。 FIG. 20 is a perspective view of the first metal sheet in modification 5. FIG. The first sheet metal 21 is formed by bending a metal plate. The first sheet metal 21 has two connecting portions 21 b that overlap the terminals 11 of the capacitor 12 . The first sheet metal 21 has a connection portion 21a that connects two connection portions 21b. Holes 21c and 21d are formed in the connecting portion 21b. A screw thread is not formed on the inner peripheral surface of the hole 21c formed in the connection portion 21b connected to the terminal block 8 and the terminal 11 of the capacitor 12, unlike the portion A shown in FIG. This is because the screw 15 shown in FIG. 10 is screwed into the screw hole 8a formed in the terminal block 8, so the inner peripheral surface of the hole 21c need not be threaded.
　一方、端子台８と接続されずにコンデンサ１２の端子１１とだけ接続される接続部２１ｂに形成された孔２１ｄの内周面にはねじ山が形成されており、図１０に示したねじ１５をねじ込むことが可能となっている。これは、ねじ穴８ａが形成された端子台８と接続されないため、接続部２１ｂに形成された孔２１ｄが接続部２１ｂと端子１１とを接続するためにねじ１５をねじ込む対象となるからである。 On the other hand, a screw thread is formed on the inner peripheral surface of the hole 21d formed in the connection portion 21b that is connected only to the terminal 11 of the capacitor 12 without being connected to the terminal block 8, and the screw 15 shown in FIG. can be screwed in. This is because the screw 15 is screwed into the hole 21d formed in the connection portion 21b to connect the connection portion 21b and the terminal 11, because the screw hole 8a is not connected to the terminal block 8. .
　図２１は、変形例５における第２の板金の斜視図である。第２の板金２２は、金属の板を折り曲げて形成されている。第２の板金２２は、コンデンサ１２の端子１１と重なる２つの接続部２２ｂを有する。第２の板金２２は、２つの接続部２２ｂ同士をつなぐ連結部２２ａを有する。接続部２２ｂには孔２２ｃ，２２ｄが形成されている。図１８に示したＡ部分のように端子台８およびコンデンサ１２の端子１１と接続される接続部２２ｂに形成された孔２２ｃの内周面にねじ山は形成されていない。これは、図１０に示したねじ１５は端子台８に形成されたねじ穴８ａにねじ込まれるため、孔２２ｃの内周面にねじ山が形成されている必要がないからである。 FIG. 21 is a perspective view of a second sheet metal in modified example 5. FIG. The second metal plate 22 is formed by bending a metal plate. The second metal plate 22 has two connection portions 22b that overlap the terminals 11 of the capacitor 12 . The second sheet metal 22 has a connection portion 22a that connects two connection portions 22b. Holes 22c and 22d are formed in the connecting portion 22b. A screw thread is not formed on the inner peripheral surface of the hole 22c formed in the connection portion 22b connected to the terminal block 8 and the terminal 11 of the capacitor 12, unlike the portion A shown in FIG. This is because the screw 15 shown in FIG. 10 is screwed into the screw hole 8a formed in the terminal block 8, so the inner peripheral surface of the hole 22c need not be threaded.
　一方、端子台８と接続されずにコンデンサ１２の端子１１とだけ接続される接続部２２ｂに形成された孔２２ｄの内周面にはねじ山が形成されており、図１０に示したねじ１５をねじ込むことが可能となっている。これは、ねじ穴８ａが形成された端子台８と接続されないため、接続部２２ｂに形成された孔２２ｄが接続部２２ｂと端子１１とを接続するためにねじ１５をねじ込む対象となるからである。 On the other hand, a screw thread is formed on the inner peripheral surface of the hole 22d formed in the connection portion 22b that is connected only to the terminal 11 of the capacitor 12 without being connected to the terminal block 8, and the screw 15 shown in FIG. can be screwed in. This is because the screw 15 is screwed into the hole 22d formed in the connection portion 22b to connect the connection portion 22b and the terminal 11, because the screw hole 8a is not connected to the terminal block 8. .
　図２２は、変形例５における第３の板金の斜視図である。第３の板金２３は、金属の板を折り曲げて形成されている。第３の板金２３は、コンデンサ１２の端子１１と重なる２つの接続部２３ｂを有する。第３の板金２３は、２つの接続部２３ｂ同士をつなぐ連結部２３ａを有する。接続部２３ｂには孔２３ｃ，２３ｄが形成されている。図１９に示したＢ部分のように端子台８およびコンデンサ１２の端子１１と接続される接続部２３ｂに形成された孔２３ｃの内周面にねじ山は形成されていない。これは、図１０に示したねじ１５は端子台８に形成されたねじ穴８ａにねじ込まれるため、孔２３ｃの内周面にねじ山が形成されている必要がないからである。 FIG. 22 is a perspective view of a third sheet metal in modified example 5. FIG. The third sheet metal 23 is formed by bending a metal plate. The third sheet metal 23 has two connection portions 23b that overlap the terminals 11 of the capacitor 12 . The third sheet metal 23 has a connection portion 23a that connects two connection portions 23b. Holes 23c and 23d are formed in the connecting portion 23b. Unlike the portion B shown in FIG. 19, the inner peripheral surface of the hole 23c formed in the connection portion 23b connected to the terminal block 8 and the terminal 11 of the capacitor 12 is not formed with a screw thread. This is because the screw 15 shown in FIG. 10 is screwed into the screw hole 8a formed in the terminal block 8, so the inner peripheral surface of the hole 23c need not be threaded.
　一方、端子台８と接続されずにコンデンサ１２の端子１１とだけ接続される接続部２３ｂに形成された孔２３ｄの内周面にはねじ山が形成されており、図１０に示したねじ１５をねじ込むことが可能となっている。これは、ねじ穴８ａが形成された端子台８と接続されないため、接続部２３ｂに形成された孔２３ｄが接続部２２ｂと端子１１とを接続するためにねじ１５をねじ込む対象となるからである。 On the other hand, a screw thread is formed on the inner peripheral surface of a hole 23d formed in a connection portion 23b that is connected only to the terminal 11 of the capacitor 12 without being connected to the terminal block 8. The screw 15 shown in FIG. can be screwed in. This is because the screw 15 is screwed into the hole 23d formed in the connection portion 23b to connect the connection portion 22b and the terminal 11, because the screw hole 8a is not connected to the terminal block 8. .
　第１の板金２１、第２の板金２２、および第３の板金２３は、それぞれ連結部２１ａ，２２ａ，２３ａの形状が異なっている。第１のカバー２には、連結部２１ａが挿入される第１の挿入溝１８、連結部２２ａが挿入される第２の挿入溝１９、および連結部２３ａが挿入される第３の挿入溝２０が形成されている。第１の挿入溝１８および第２の挿入溝１９は、コンデンサ１２を並列に接続させる板金が挿入される並列用溝である。第３の挿入溝２０は、コンデンサ１２を直列に接続させる板金が挿入される直列用溝である。連結部２１ａ，２２ａ，２３ａの形状および接続部２１ｂ，２２ｂ，２３ｂとの相対的な位置関係から、連結部２１ａ，２２ａ，２３ａを挿入可能な挿入溝１８，１９，２０は決まっている。したがって、図１７から図１９に示した位置と異なる位置に挿入した場合、第１のカバー２の露出部２ａの周囲に形成された凹凸に干渉して適切な位置に配置することができない。そのため、第１の板金２１、第２の板金２２、および第３の板金２３の挿入位置の間違いによる、コンデンサ１２同士の誤接続を防ぐことができる。 The first sheet metal 21, the second sheet metal 22, and the third sheet metal 23 have different shapes of connecting portions 21a, 22a, and 23a, respectively. The first cover 2 has a first insertion groove 18 into which the connecting portion 21a is inserted, a second insertion groove 19 into which the connecting portion 22a is inserted, and a third insertion groove 20 into which the connecting portion 23a is inserted. is formed. The first insertion groove 18 and the second insertion groove 19 are parallel grooves into which sheet metals for connecting the capacitors 12 in parallel are inserted. The third insertion groove 20 is a series groove into which a sheet metal for connecting the capacitors 12 in series is inserted. The insertion grooves 18, 19 and 20 into which the connecting portions 21a, 22a and 23a can be inserted are determined by the shape of the connecting portions 21a, 22a and 23a and the relative positional relationship with the connecting portions 21b, 22b and 23b. Therefore, if the first cover 2 is inserted in a position different from the positions shown in FIGS. 17 to 19, it interferes with the irregularities formed around the exposed portion 2a of the first cover 2 and cannot be placed in an appropriate position. Therefore, erroneous connection between the capacitors 12 due to incorrect insertion positions of the first metal plate 21, the second metal plate 22, and the third metal plate 23 can be prevented.
　また、第１の板金２１、第２の板金２２、および第３の板金２３を用いてコンデンサ１２の端子１１同士を接続させることでコンデンサ１２同士を直列に接続したり並列に接続したりできるので、第１の板金２１、第２の板金２２、および第３の板金２３を用いずに第１の基板５に形成された回路を介してコンデンサ１２同士を直列に接続したり並列に接続したりする場合に比べて端子台８の数を減らすことができる。具体的には、第１の板金２１、第２の板金２２、および第３の板金２３を用いない場合には、コンデンサ１２のすべての端子１１に端子台８を接続させるため、４つの端子台８が必要になる。一方、第１の板金２１、第２の板金２２、および第３の板金２３を用いた場合には、並列接続であれば図１８に示すようにＡ部分で端子１１に接続される２つの端子台８が設けられていればよい。また、直列接続であれば図１９に示すようにＢ部分で端子１１に接続される３つの端子台８が設けられていればよい。 Also, by connecting the terminals 11 of the capacitors 12 using the first metal plate 21, the second metal plate 22, and the third metal plate 23, the capacitors 12 can be connected in series or in parallel. , the first metal plate 21, the second metal plate 22, and the third metal plate 23 are not used, and the capacitors 12 can be connected in series or in parallel via a circuit formed on the first substrate 5. The number of terminal blocks 8 can be reduced as compared with the case where the terminal blocks 8 are provided. Specifically, when the first metal plate 21, the second metal plate 22, and the third metal plate 23 are not used, the terminal blocks 8 are connected to all the terminals 11 of the capacitor 12, so four terminal blocks are required. 8 is required. On the other hand, when the first sheet metal 21, the second sheet metal 22, and the third sheet metal 23 are used, two terminals connected to the terminal 11 at the portion A as shown in FIG. It is sufficient if the table 8 is provided. In the case of serial connection, three terminal blocks 8 connected to the terminals 11 at the B portion as shown in FIG. 19 may be provided.
　なお、第１の板金２１、第２の板金２２、および第３の板金２３を形状だけでなく他の要素で識別可能とすることで挿入位置の間違いをより確実に防ぐことができる。例えば、第１の板金２１、第２の板金２２、および第３の板金２３を異なる色で塗ることで、色の違いで識別可能としてもよい。 By making the first sheet metal 21, the second sheet metal 22, and the third sheet metal 23 identifiable not only by their shapes but also by other elements, it is possible to more reliably prevent mistakes in the insertion positions. For example, the first sheet metal 21, the second sheet metal 22, and the third sheet metal 23 may be painted with different colors so that they can be identified by the difference in color.
　以上の実施の形態に示した構成は、一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configuration shown in the above embodiment is an example, and can be combined with another known technique, and part of the configuration can be omitted or changed without departing from the scope of the invention. It is possible.
　１　電力変換装置、２　第１のカバー、２ａ　露出部、２ｂ　反対面、３　第２のカバー、４　筐体、５　第１の基板、５ａ　搭載面、６　ベース、７　第２の基板、８，８１，８２　端子台、８ａ　ねじ穴、１０　本体、１０ａ　中心軸、１１，１１１，１１２　端子、１１ａ　貫通孔、１２　コンデンサ、１３，１３Ａ，１３Ｂ　窪み、１３ａ　縁、１４　一端面、１５　ねじ、１６　孔、１６ａ　縁、１７　溝、１８　第１の挿入溝、１９　第２の挿入溝、２０　第３の挿入溝、２１　第１の板金、２１ａ　連結部、２１ｂ　接続部、２１ｃ，２１ｄ　孔、２２　第２の板金、２２ａ　連結部、２２ｂ　接続部、２２ｃ，２２ｄ　孔、２３　第３の板金、２３ａ　連結部、２３ｂ　接続部、２３ｃ，２３ｄ　孔、２４　板部、２５　当接部。 1 power converter, 2 first cover, 2a exposed part, 2b opposite surface, 3 second cover, 4 housing, 5 first substrate, 5a mounting surface, 6 base, 7 second substrate, 8, 81, 82 terminal block, 8a screw hole, 10 main body, 10a central shaft, 11, 111, 112 terminal, 11a through hole, 12 capacitor, 13, 13A, 13B recess, 13a edge, 14 one end face, 15 screw, 16 hole , 16a edge, 17 groove, 18 first insertion groove, 19 second insertion groove, 20 third insertion groove, 21 first sheet metal, 21a connection part, 21b connection part, 21c, 21d hole, 22 second sheet metal, 22a connecting portion, 22b connecting portion, 22c, 22d hole, 23 third sheet metal, 23a connecting portion, 23b connecting portion, 23c, 23d hole, 24 plate portion, 25 contact portion.

Claims (11)

  1. 　柱状の本体と前記本体の一端面に設けられた複数の端子とを有するコンデンサと、
    　それぞれが前記端子と接続される複数の端子台が設けられた搭載面を有する第１の基板と、
    　前記搭載面を覆うとともに、前記一端面が前記搭載面と垂直となる姿勢で前記コンデンサが挿入される窪みが前記第１の基板側を向く面の反対面に形成された第１のカバーと、を備え、
    　前記搭載面が前記第１のカバーで覆われているときに、前記窪みに前記コンデンサが挿入されると、前記端子と前記端子台が接続されることを特徴とする電力変換装置。     a capacitor having a columnar body and a plurality of terminals provided on one end face of the body;
    a first substrate having a mounting surface provided with a plurality of terminal blocks each connected to the terminal;
    a first cover that covers the mounting surface and has a recess in which the capacitor is inserted with the one end surface perpendicular to the mounting surface formed on the surface opposite to the surface facing the first substrate; with
    A power converter, wherein the terminal and the terminal block are connected when the capacitor is inserted into the recess while the mounting surface is covered with the first cover.
  2. 　前記第１のカバーには前記端子台を前記窪みから露出させる露出部が形成されており、
    　前記窪みに挿入された前記コンデンサの端子と前記露出部から露出した端子台とが重なって接続されていることを特徴とする請求項１に記載の電力変換装置。     The first cover is formed with an exposed portion for exposing the terminal block from the recess,
    2. The power conversion device according to claim 1, wherein the terminals of the capacitor inserted into the recesses and the terminal block exposed from the exposed portion are overlapped and connected.
  3. 　前記端子台は、剛体で形成されていることを特徴とする請求項１または２に記載の電力変換装置。 The power converter according to claim 1 or 2, wherein the terminal block is formed of a rigid body.
  4. 　前記端子台にはねじ穴が形成されており、
    　前記ねじ穴にねじ込まれたねじで前記端子と前記端子台とが締結されていることを特徴とする請求項３に記載の電力変換装置。     A screw hole is formed in the terminal block,
    4. The power converter according to claim 3, wherein the terminal and the terminal block are fastened with a screw screwed into the screw hole.
  5. 　１つの前記コンデンサに設けられた複数の前記端子は、前記一端面に対して前記本体の中心軸と前記一端面との交点を中心とする点対称とならない位置に設けられ、
    　複数の前記端子台は、前記窪みに挿入された前記コンデンサの前記端子が接続可能に形成されていることを特徴とする請求項１から４のいずれか１つに記載の電力変換装置。     the plurality of terminals provided in one capacitor are provided at positions that are not point-symmetrical with respect to the one end face about the intersection of the central axis of the main body and the one end face;
    5. The power conversion apparatus according to claim 1, wherein the terminals of the capacitor inserted into the recess are connectable to the plurality of terminal blocks.
  6. 　１つの前記コンデンサに設けられた複数の前記端子と接続される前記端子台同士は、前記第１の基板の前記搭載面からの高さが互いに異なり、
    　１つの前記コンデンサに設けられた複数の前記端子は、前記窪みに挿入された状態で前記搭載面からの高さが互いに異なることを特徴とする請求項５に記載の電力変換装置。     the terminal blocks connected to the plurality of terminals provided in one capacitor have different heights from the mounting surface of the first substrate;
    6. The power converter according to claim 5, wherein the plurality of terminals provided in one capacitor have different heights from the mounting surface when inserted into the recess.
  7. 　前記窪みを覆う第２のカバーをさらに備えることを特徴とする請求項１から６のいずれか１つに記載の電力変換装置。 The power converter according to any one of claims 1 to 6, further comprising a second cover that covers the recess.
  8. 　前記コンデンサは、前記第１のカバーと前記第２のカバーとに挟み込まれて固定されることを特徴とする請求項７に記載の電力変換装置。 The power converter according to claim 7, wherein the capacitor is sandwiched and fixed between the first cover and the second cover.
  9. 　前記第２のカバーを挟んで前記コンデンサの反対側に設けられて電子部品が搭載された第２の基板をさらに備えることを特徴とする請求項７または８に記載の電力変換装置。 The power conversion device according to claim 7 or 8, further comprising a second substrate provided on the opposite side of the capacitor with the second cover interposed therebetween and on which electronic components are mounted.
  10. 　前記窪みの内側には貫通孔が形成され、
    　前記窪みの縁と前記貫通孔の縁とをつなぐ溝が形成されていることを特徴とする請求項１から９のいずれか１つに記載の電力変換装置。     A through hole is formed inside the recess,
    The power converter according to any one of claims 1 to 9, wherein a groove is formed to connect an edge of the recess and an edge of the through hole.
  11. 　前記第１のカバーには複数の前記窪みが形成され、
    　複数の前記窪みに挿入される複数の前記コンデンサが設けられ、
    　複数の前記コンデンサに設けられた端子同士を接続させて複数の前記コンデンサを並列に接続させる並列用板金、または複数の前記コンデンサに設けられた端子同士を接続させて複数の前記コンデンサを直列に接続させる直列用板金をさらに備え、
    　前記第１のカバーには、前記並列用板金が挿入される並列用溝と、前記直列用板金が挿入される直列用溝とが形成され、
    　前記並列用溝は前記直列用板金の挿入を規制し、前記直列用溝は前記並列用板金の挿入を規制することを特徴とする請求項１から１０のいずれか１つに記載の電力変換装置。     a plurality of the depressions are formed in the first cover,
    a plurality of the capacitors inserted into the plurality of recesses;
    A sheet metal for parallel connection in which the terminals provided on the plurality of capacitors are connected to each other to connect the plurality of capacitors in parallel, or a plurality of capacitors to be connected in series by connecting the terminals provided to the plurality of capacitors. It is further equipped with a serial sheet metal that allows
    The first cover is formed with a parallel groove into which the parallel sheet metal is inserted and a series groove into which the serial sheet metal is inserted,
    The power converter according to any one of claims 1 to 10, wherein the parallel groove restricts insertion of the serial sheet metal, and the serial groove restricts insertion of the parallel sheet metal. .
PCT/JP2021/024815 2021-06-30 2021-06-30 Power conversion device WO2023276062A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0866050A (en) * 1994-06-16 1996-03-08 Hitachi Ltd Inverter device
JP2007020238A (en) * 2005-07-05 2007-01-25 Diamond Electric Mfg Co Ltd Inverter unit for automobile
JP2014138442A (en) * 2013-01-15 2014-07-28 Fanuc Ltd Motor driving device having radiator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0866050A (en) * 1994-06-16 1996-03-08 Hitachi Ltd Inverter device
JP2007020238A (en) * 2005-07-05 2007-01-25 Diamond Electric Mfg Co Ltd Inverter unit for automobile
JP2014138442A (en) * 2013-01-15 2014-07-28 Fanuc Ltd Motor driving device having radiator

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