JP2017208409A - Chip type electrolytic capacitor, and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase a vibration resistance.SOLUTION: A chip type electrolytic capacitor 100 comprises: a capacitor main body 10 having a storage container 2; a seat plate 20 attached to the capacitor main body 10; and a restriction member 30 for restricting the deflection of the capacitor main body 10 with respect to the seat plate 20. The seat plate 20 has four wall parts 22 formed in a face facing a sealing body. In the storage container 2, an annular concave portion 2b is formed in its outer peripheral face 2a. The restriction member 30 has: four fitting parts 31, 32 fit in between the four wall parts 22 respectively; and connection parts 33 fit in the concave portion 2b and connecting between the four fitting parts 31, 32.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a chip-type electrolytic capacitor that is used by being mounted on a substrate as a surface-mounting type, and particularly requires vibration resistance.

  Patent Document 1 discloses an insulating terminal plate (seat plate) provided with four support pillars (wall portions) that come into contact with each other so as to hold the peripheral surface of a metal case (storage container) that stores a capacitor element on the inner surface. A chip-type electrolytic capacitor is described. The support column of the insulating terminal plate of this chip-type electrolytic capacitor is formed so as to be elastically deformable and at a height that covers an annular drawn portion (dent) provided in the metal case. For this reason, even if a vibration is applied to the chip-type electrolytic capacitor, the support column of the insulating terminal plate abuts on the peripheral surface of the metal case, and the metal case can be effectively held.

JP 2001-052959 A

  However, in the chip-type electrolytic capacitor described in Patent Document 1, the four support pillars formed on the insulated terminal plate are arranged apart from each other and bend in consideration of mounting of the metal case on the insulated terminal plate. It is easily formed. For this reason, under severe conditions in which a relatively strong vibration is generated in the chip-type electrolytic capacitor, it has not been possible to reliably prevent the chip-type electrolytic capacitor from falling off the substrate due to a large shake.

  Accordingly, an object of the present invention is to provide a chip-type electrolytic capacitor having excellent vibration resistance and a method for manufacturing the same.

  The chip electrolytic capacitor of the present invention includes a capacitor element, a pair of lead wires connected to the capacitor element, a bottomed cylindrical storage container for storing the capacitor element, and an open end of the storage container. A capacitor body having a sealing body formed with an insertion hole through which the pair of lead wires are inserted and a hole through which the pair of lead wires led out from the sealing body are inserted is formed, and the sealing body is formed An insulating seat plate attached to the capacitor body in a state of facing the capacitor body, and a regulating member that regulates the swing of the capacitor body with respect to the seat plate, and faces the sealing body of the seat plate. A plurality of wall portions are formed on the surface so as to be spaced apart from each other along the circumferential direction of the storage container and abut against the storage container so that the outer peripheral surface of the storage container is held by the inner surface. And the outer peripheral surface of the portion of the storage container that faces the sealing body extends along the circumferential direction, and is formed with an annular recess that faces the plurality of wall portions, The restricting member includes a plurality of fitting portions that are respectively fitted between the plurality of wall portions, and a connecting portion that extends along the circumferential direction while being fitted to the recessed portion and connects the fitting portions. And have.

  The method for manufacturing a chip-type electrolytic capacitor of the present invention includes a capacitor element, a pair of lead wires connected to the capacitor element, a bottomed cylindrical storage container for storing the capacitor element, and the storage A periphery formed on an outer peripheral surface of a portion of the capacitor body facing the sealing body of the storage container having a sealing body formed with an insertion hole through which the pair of lead wires are inserted and the opening end of the container is sealed. The connecting portion of the restricting member having a plurality of fitting portions and a connecting portion extending along the circumferential direction and connecting the plurality of fitting portions is fitted into an annular recess extending along the direction. After the restriction member attaching step for attaching the restriction member to the capacitor body, and after the restriction member attachment step, the pair of lead wires of the capacitor body are inserted into the holes of the insulating seat plate. And a seat plate mounting step of mounting the seat plate in the capacitor body in a state of facing the sealing body. And in the said seat board attachment process, while holding the outer peripheral surface of the said storage container in the inner surface of the some wall part formed in the surface facing the said sealing body of the said seat board, between the said several wall parts, the said Each of the plurality of fitting portions is fitted.

  Here, “fitting” means that the fitting portion and the plurality of wall portions come into contact with each other, the fitting portion fits between the wall portions, and the connection portion and the recessed portion come into contact with each other. This means that the connecting portion fits into the recessed portion.

  According to this configuration, the plurality of fitting portions of the regulating member are respectively fitted between the plurality of wall portions of the seat plate, and the connection portions connecting the plurality of fitting portions are fitted into the recess portions of the storage container. As a result, it is possible to regulate the deflection of the capacitor body relative to the seat plate. That is, even if a plurality of wall portions are formed so as to bend in consideration of mounting of the capacitor main body (storage container), the deformation of the wall portion is restricted by the restriction member, so that the swing of the capacitor main body with respect to the seat plate is also restricted. Is done. For this reason, the capacitor body is held not only by the plurality of wall portions but also by the regulating member, the holding power of the capacitor body is increased, and the vibration resistance is improved. As a result, it is possible to reliably prevent the chip-type electrolytic capacitor from falling off the substrate even under severe conditions in which relatively strong vibrations occur in the chip-type electrolytic capacitor.

  In the present invention, the seat plate has a quadrangular planar shape, the wall portion is disposed at four corners of the seat plate, and the fitting portion is between each of the four wall portions. It is preferable that it is fitted to. Thereby, the alignment direction of two wall parts adjacent on both sides of each fitting part becomes a direction along each side of the seat plate. For this reason, it becomes difficult for the capacitor body to swing in the direction along each side of the seat plate by the regulating member.

  Further, in the present invention, the connection portion is composed of two connection halves divided in the circumferential direction, and each connection half is fitted on both sides of one of the plurality of wall portions. It is preferable that the fitting portions to be connected are connected to each other. Thereby, it becomes easier to attach the connecting portion to the capacitor body than the regulating member in which the connecting portion is continuously formed along the circumferential direction.

  Further, in the present invention, the first arrangement direction of the two wall portions adjacent to each other with the one fitting portion among the plurality of fitting portions interposed therebetween, and the two adjacent to each other with the other fitting portion interposed therebetween The second alignment direction of the wall portions is orthogonal, two of the four fitting portions, the two fitting portions are opposed to the first alignment direction, and the remaining two fitting portions are the Each of the two fitting portions that are arranged opposite to each other in the second arrangement direction and that are opposed to each other in the first arrangement direction is composed of two fitting halves divided in the circumferential direction. One of the connection halves is divided into one fitting half of the two fitting portions and one fitting portion of the two fitting portions facing in the second alignment direction. The other half of the connection is divided into the other half of the two fitting parts and the second half It is preferable that connects the other of the fitting portions of said two engagement portions facing the fine direction. As a result, it is possible to effectively regulate the shake in the first and second alignment directions with respect to the seat plate of the capacitor body. Moreover, it becomes easy to attach the regulating member to the capacitor body.

  According to the present invention, the plurality of fitting portions of the regulating member are fitted between the plurality of wall portions of the seat plate, respectively, and the connection portions connecting the plurality of fitting portions are fitted into the recess portions of the storage container. Therefore, it is possible to regulate the swing of the capacitor body with respect to the seat plate. That is, even if a plurality of wall portions are formed so as to bend in consideration of mounting of the capacitor main body (storage container), the deformation of the wall portion is restricted by the restriction member, so that the swing of the capacitor main body with respect to the seat plate is also restricted. Is done. For this reason, the capacitor body is held not only by the plurality of wall portions but also by the regulating member, the holding power of the capacitor body is increased, and the vibration resistance is improved. As a result, it is possible to reliably prevent the chip-type electrolytic capacitor from falling off the substrate even under severe conditions in which relatively strong vibrations occur in the chip-type electrolytic capacitor.

1 is a schematic perspective view of a chip-type electrolytic capacitor according to an embodiment of the present invention. It is sectional drawing along the II-II line | wire shown in FIG. It is a disassembled perspective view when the regulating member of the chip type electrolytic capacitor concerning one embodiment of the present invention is made to separate. It is a front view of the capacitor | condenser main body shown in FIG. It is a perspective view of the seat board shown in FIG. FIG. 2 shows the regulating member shown in FIG. 1, wherein (a) is a plan view and (b) is a front view.

  Hereinafter, a chip electrolytic capacitor according to an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 1 to 3, the chip-type electrolytic capacitor 100 in this embodiment includes a capacitor main body 10, a seat plate 20, and a regulating member 30, and a pair of lead wires 3 of the capacitor main body 10 is mounted on a substrate ( It is mounted on the surface of the substrate by being electrically connected to (not shown). As shown in FIG. 2, the capacitor body 10 includes a capacitor element 1, a bottomed cylindrical storage container 2 for storing the capacitor element 1 impregnated with an electrolyte, and a pair of leads connected to the capacitor element 1. The wire 3 has a sealing body 4 that seals the opening end of the storage container 2 and is formed with an insertion hole 4a through which the pair of lead wires 3 are inserted.

  Capacitor element 1 is configured by connecting a pair of lead wires 3 for taking out an electrode to an anode foil and a cathode foil in which an oxide film is formed on an aluminum foil, and winding them through a separator.

  The storage container 2 is a cylindrical case made of aluminum. As shown in FIGS. 2 to 4, a recessed portion 2 b that extends annularly along the circumferential direction A (see FIG. 3) of the outer peripheral surface 2 a is formed in the region of the storage container 2 that faces the sealing body 4. ing. The recessed portion 2 b is formed by drawing the outer peripheral surface 2 a of the storage container 2 after inserting the sealing body 4 into the storage container 2. The sealing body 4 is made of an elastic rubber such as isobutylene-isoprene rubber (IIR) or ethylene propylene terpolymer (EPT), for example.

  The seat plate 20 is made of a synthetic resin and has an insulating property. As shown in FIGS. 1 and 2, the seat plate 20 is attached to the capacitor main body 10 in a state where the seat plate 20 is in contact with the end portion (lower end portion in FIG. 2) of the capacitor main body 10 on the sealing body 4 side. That is, the seat plate 20 is attached to the capacitor main body 10 in a state of facing the sealing body 4. Moreover, the seat board 20 has the flat board-shaped seat board main body 21, as shown in FIGS. 1-3 and FIG. The seat plate main body 21 has a substantially square planar shape, but the planar shape is not particularly limited. The seat plate main body 21 has a hole 20a through which the pair of lead wires 3 led out from the capacitor element 1 are inserted, and a groove 20b for folding and storing the pair of lead wires 3 inserted through the holes 20a at right angles. doing.

  The surface 21a of the seat plate main body 21 facing the sealing body 4 is arranged spaced apart from each other along the circumferential direction A of the outer peripheral surface 2a of the storage container 2 so that the outer peripheral surface 2a of the storage container 2 is held by the inner surface. Four wall portions 22 that come into contact with each other are integrally provided. The four wall portions 22 are arranged at each corner portion (four corners) of the surface 21 a facing the sealing body 4 of the seat plate main body 21. Thus, the two adjacent wall portions 22 are arranged side by side along the side of the seat plate main body 21.

  More specifically, in FIG. 3 and FIG. 5, the wall portion 22 on the front side of the paper surface and the wall portion 22 on the right side of the wall portion 22 are arranged in the first alignment direction B along one side of the seat plate body 21. Arranged side by side. 3 and 5, the wall 22 on the front side of the paper surface and the wall 22 on the left side of the wall 22 are the one side of the seat plate body 21 (side parallel to the first alignment direction B). Are arranged side by side along the second alignment direction C along the other side orthogonal to each other. Further, the wall portion 22 on the farthest side of the paper surface in FIG. 5 and the wall portion 22 on the right side of the wall portion 22 are arranged side by side along the second alignment direction C. Further, the wall portion 22 on the farthest side of the paper surface in FIG. 5 and the wall portion 22 on the left side of the wall portion 22 are arranged side by side along the first alignment direction B. The first arrangement direction B and the second arrangement direction C are orthogonal to each other. As shown in FIG. 5, the four wall portions 22 each have two wall surfaces 22 a facing in the direction in which the two adjacent wall portions 22 are arranged.

  The height of the four wall portions 22 of the seat plate 20 attached to the capacitor body 10 exceeds the recessed portion 2b of the storage container 2 from the surface 21a, as shown in FIG. That is, the recessed portion 2 b faces the four wall portions 22. Moreover, the dimension between the inner surfaces of the four wall portions 22 is made of an insulating resin material so that it is slightly smaller than the outer shape of the storage container 2. In addition, the dimension between the inner surfaces of the four wall portions 22 is such that the rising portion from the seat plate main body 21 is substantially the same as the outer shape of the storage container 2, and the front end portion of the wall portion is slightly smaller than the outer shape of the storage container 2. It may be. Moreover, you may provide the protrusion which protrudes inside at the wall part front-end | tip part.

  The seat plate 20 is provided with two chamfered portions 23. These chamfered portions 23 are provided at two corner portions of the seat plate 20 which are both ends of the side of the seat plate main body 21 in contact with the terminal end of one of the grooves 20b in which the pair of lead wires 3 are accommodated. The chamfer 23 is configured to display the polarity.

  The regulating member 30 is made of synthetic resin and has an insulating property. As shown in FIGS. 1, 3, and 6, the regulating member 30 includes four fitting portions 31 and 32 and a connection portion 33 that connects the four fitting portions 31 and 32, and a capacitor main body. The swing of the ten seat plates 20 is restricted. Of the four fitting portions 31 and 32, the two fitting portions 31 are disposed between two adjacent wall portions 22 aligned in the second alignment direction C, as shown in FIGS. The two fitting portions 32 are disposed between the two wall portions 22 adjacent in the first alignment direction B. That is, the two fitting portions 31 are arranged to face the first arrangement direction B, and the two fitting portions 32 are arranged to face the second arrangement direction C. The four fitting portions 31 and 32 are disposed in contact with the storage container 2 so that the outer peripheral surface 2a of the storage container 2 is held by the inner surface when the regulating member 30 is attached to the capacitor body 10. .

  Moreover, the four fitting parts 31 and 32 are formed so that it may each fit between the four wall parts 22 of the seat board 20, as shown in FIG. In more detail, each fitting part 31 and 32 is formed in plate shape, and has the width | variety which just fits between the two adjacent wall parts 22. FIG. In addition, when each fitting portion 31, 32 is fitted between the corresponding two wall portions 22, the two fitting portions 31, 32 are in contact with the two wall surfaces 22 a constituting the wall portion 22 and are parallel to the wall surface 22 a. Contact surfaces 31c and 32a are provided. That is, the contact surfaces 31c and 32a are also configured to face the alignment directions B and C of the wall surface 22a that constitutes between the two wall portions 22 into which the fitting portions 31 and 32 are fitted.

  Moreover, each of the two fitting parts 31 which oppose the 1st arrangement direction B is comprised by the fitting half parts 31a and 31b divided | segmented into two in the circumferential direction A (or 2nd arrangement direction C). Yes.

  As shown in FIGS. 1, 3, and 6, the connection portion 33 has an annular shape extending along the circumferential direction A. As shown in FIGS. 2 and 3, the connecting portion 33 is formed in a shape that fits exactly into the recessed portion 2 b when the regulating member 30 is attached to the capacitor body 10. Specifically, the connection portion 33 has a semi-cylindrical cross-sectional shape. The connection part 33 is in contact with the dent part 2b in a state of being fitted to the dent part 2b. The connecting portion 33 is formed so that its inner diameter is slightly smaller than the outer diameter of the recessed portion 2b. In addition, the cross-sectional shape of the connection part 33 is not specifically limited, What kind of shape may be sufficient if it is a shape which can be latched to the dent part 2b.

  As shown in FIGS. 3 and 6, the connection portion 33 is configured by connection halves 33 a and 33 b divided into two in the circumferential direction A. One connection half 33a of the two connection halves 33a and 33b includes one fitting half 31a of the two fitting parts 31 and one fitting part 32 of the two fitting parts 32. And connected. The other connection half 33 b connects the other fitting half 31 b of the two fitting parts 31 and the other fitting part 32 of the two fitting parts 32.

  Next, a method for manufacturing the chip electrolytic capacitor 100 will be described.

  First, a high-purity aluminum foil is etched to increase the surface area, and this aluminum foil is subjected to a chemical conversion treatment to form an oxide foil that becomes a capacitor dielectric, and an etched cathode foil. Make it. The lead wire 3 is connected to the anode foil and the cathode foil (hereinafter referred to as “electrode foil” together) by means of needle hole caulking, ultrasonic welding or the like, and then wound through a separator to obtain a capacitor element. 1 is produced.

  Next, the capacitor element 1 is impregnated with the electrolytic solution, and the impregnated capacitor element 1 is stored in the storage container 2. Next, the sealing body 4 having the pair of lead wires 3 inserted through the insertion holes 4 a is inserted into the opening of the storage container 2. Thereafter, the opening of the storage container 2 is curled, the outer peripheral surface 2 a is drawn, and the pair of lead wires 3 led out from the sealing body 4 are flattened. In addition, the clearance gap is sealed by inserting the pair of lead wire 3 joined to electrode foil through the insertion hole 4a of the sealing body 4. FIG. At this stage, the capacitor body 10 is completed.

  Next, the connecting portion 33 of the restricting member 30 is fitted into the recessed portion 2b of the capacitor body 10, and the restricting member 30 is attached to the capacitor body 10 (a restricting member attaching step). That is, the connection half 33a of the restricting member half composed of the divided connection half 33a and the two fitting halves 31a and 32 connected thereto, and the divided connection half 33b. And the connecting half portion 33b of the restricting member half portion constituted by the two fitting half portions 31b and the fitting portion 32 connected thereto are fitted into the recessed portion 2b, and both restricting member half portions are fitted. Attach to the capacitor body 10. At this time, the four fitting portions 31 and 32 are brought into contact with the storage container 2 so that the outer peripheral surface 2 a of the storage container 2 is held by the inner surfaces of the four fitting portions 31 and 32.

  Next, after inserting the pair of lead wires 3 of the capacitor main body 10 to which the regulating member 30 is attached into the hole 20a of the seat plate 20, the pair of lead wires 3 is bent at a right angle into the groove 20b of the seat plate 20. Arrange. Thus, the seat plate 20 is attached to the capacitor main body 10 in a state of facing the sealing body 4 (seat plate attaching step).

  At this time, the four wall portions 22 are brought into contact with the storage container 2 so that the inner surfaces of the four wall portions 22 of the seat plate 20 hold the outer peripheral surface 2 a of the storage container 2. Moreover, the fitting parts 31 and 32 are each fitted between the four wall parts 22 at this time. That is, the fitting part 32 is fitted between the two wall parts 22 adjacent to each other in the first alignment direction B, and the contact surface 32 a of the fitting part 32 is brought into contact with the wall surface 22 a of the wall part 22. Further, the fitting portions 31 are fitted between the two wall portions 22 adjacent to each other in the second alignment direction C, and the contact surface 31 c of the fitting portion 31 is brought into contact with the wall surface 22 a of the wall portion 22. In this way, the chip type electrolytic capacitor 100 is manufactured.

  As described above, in the chip electrolytic capacitor 100 of the present embodiment, the fitting portions 31 and 32 of the regulating member 30 are fitted between the corresponding wall portions 22. Therefore, when vibration occurs in the chip-type electrolytic capacitor 100 in a direction orthogonal to the first alignment direction B (or the second alignment direction C), the first and second alignment directions B and C intersect each other. The fitting portion 31 (or fitting portion 32) of the restricting member 30 and the two wall portions 22 adjacent to each other with the fitting portion 31 (or fitting portion 32) interposed therebetween (that is, aligned in the second alignment direction C). By engaging with the adjacent two wall portions 22), it is possible to regulate the deflection of the capacitor body 10 with respect to the seat plate 20. For this reason, the capacitor body 10 is held not only by the four wall portions 22 but also by the regulating member 30, the holding power of the capacitor body 10 is increased, and the vibration resistance is improved. As a result, even when a relatively strong vibration is generated in the chip-type electrolytic capacitor 100, it is possible to prevent the chip-type electrolytic capacitor 100 from falling off the substrate. Moreover, according to the manufacturing method of the chip-type electrolytic capacitor 100, a chip-type electrolytic capacitor having the above effects can be manufactured.

  Moreover, since the wall part 22 is arrange | positioned at the four corners of the seat board 20, and the fitting parts 31 and 32 are fitted between each of the four wall parts 22, the arrangement direction B of the wall part B, C Becomes the direction along each side of the seat plate 20 (the seat plate main body 21). For this reason, the restriction member 30 makes it difficult for the capacitor main body 10 to swing in the direction along each side of the seat plate 20.

  Further, the connecting portion 33 is divided into two, and each of the divided connecting halves 33a and 33b fits between the two wall portions adjacent to the first and second alignment directions B and C, respectively. Since the two fitting portions 31 and 32 are connected, the connecting portion 33 is easier to attach to the capacitor body 10 than the regulating member 30 formed continuously along the circumferential direction A.

  Also, one divided connection half 33a connects one fitting half 31a of the two fitting portions 31 and one fitting portion 32 of the two fitting portions 32, and the other. The connection half portion 33 b connects the other fitting half portion 31 b of the two fitting portions 31 and the other fitting portion 32 of the two fitting portions 32. Thereby, it is possible to effectively regulate the shake of the capacitor body 10 with respect to the seat plate 20 in the first and second alignment directions B and C. Further, it becomes easy to attach the regulating member 30 to the capacitor body 10.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. The seat plate 20 may have two, three, and five or more wall portions 22. The restricting member 30 may also have two, three, and five or more fitting portions 31 and 32. The seat plate 20 (the seat plate body 21) may have any planar shape such as a circle, an ellipse, a triangle, a quadrangle other than a square, or a polygon. Further, the positional relationship between the wall portion 22 of the chip-type electrolytic capacitor 100 and the fitting portions 31 and 32 in a plan view may be switched.

  The fitting portions 31 and 32 do not have to be in contact with the outer peripheral surface 2 a of the storage container 2. The connecting portion 33 may not be divided in the circumferential direction A. Further, the connecting portion 33 may be divided into three or more in the circumferential direction A. In this case, it is preferable that each of the divided connection halves is connected to two fitting portions fitted to each other between the two wall portions 22 adjacent to each other in different arrangement directions.

  Further, the fitting portion 31 may not be divided in the circumferential direction A. Further, the fitting portion 32 may be divided in the circumferential direction A. In this case, it is preferable that the connection part 33 is divided into four in the circumferential direction A, and each of the divided connection parts connects the half part of the fitting part 31 and the half part of the fitting part 32. .

  Further, the first alignment direction B and the second alignment direction C may intersect without being orthogonal. Even in this case, similarly to the above-described embodiment, when vibration occurs in the chip-type electrolytic capacitor in the direction orthogonal to the first alignment direction B (or the second alignment direction C), the first and second alignment directions B, Since C intersects with each other, the engagement between the fitting portion 31 (or fitting portion 32) of the regulating member 30 and the two wall portions 22 adjacent to each other with the fitting portion 31 (or fitting portion 32) interposed therebetween. As a result, it is possible to regulate the deflection of the capacitor body 10 relative to the seat plate 20.

DESCRIPTION OF SYMBOLS 1 Capacitor element 2 Storage container 2a Outer peripheral surface 2b Recessed part 3 Lead wire 4 Sealing body 4a Insertion hole 10 Capacitor main body 20 Seat plate 20a Hole 21a Surface 22 Wall part 30 Restriction member 31 Fitting part 31a, 31b Fitting half part 32 Fitting Joint part 33 Connection part 33a, 33b Connection half part A Circumferential direction B First arrangement direction C Second arrangement direction

Claims (5)

A capacitor element, a pair of lead wires connected to the capacitor element, a bottomed cylindrical storage container for storing the capacitor element, and sealing the open end of the storage container and the pair of lead wires A capacitor body having a sealing body formed with an inserted insertion hole;
A hole through which the pair of lead wires led out from the sealing body is inserted, and an insulating seat plate attached to the capacitor body in a state of facing the sealing body,
And a regulating member that regulates the deflection of the capacitor body with respect to the seat plate,
A plurality of surfaces of the seat plate facing the sealing body are spaced apart from each other along the circumferential direction of the storage container, and are in contact with the storage container so that the outer peripheral surface of the storage container is held by the inner surface. Wall is formed,
On the outer peripheral surface of the portion of the storage container that faces the sealing body, an annular recess that extends along the circumferential direction and faces the plurality of wall portions is formed.
The regulating member is
A plurality of fitting portions respectively fitted between the plurality of wall portions;
A chip-type electrolytic capacitor characterized by having a connection portion that extends along the circumferential direction while being fitted in the recess, and that connects the fitting portion. The seat plate has a square planar shape,
The wall portion is disposed at four corners of the seat plate,
The chip-type electrolytic capacitor according to claim 1, wherein the fitting portion is fitted between each of the four wall portions. The connection portion is composed of two connection halves divided in the circumferential direction,
3. The chip electrolytic capacitor according to claim 2, wherein each of the connection halves connects the fitting portions that are fitted on both sides of one of the plurality of wall portions. . A first arrangement direction of two wall portions adjacent to each other across one fitting portion of the plurality of fitting portions, and a second of the two wall portions adjacent to each other across the other fitting portion. The alignment direction is orthogonal,
Of the four fitting parts, two of the fitting parts are opposed to the first arrangement direction, and the remaining two fitting parts are arranged to face the second arrangement direction,
Each of the two fitting portions facing in the first alignment direction is composed of two fitting halves divided in the circumferential direction,
One of the divided connection halves is fitted into one of the two fitting parts of the two fitting parts and the two fitting parts facing in the second alignment direction. Connected to the
The other divided half of the connection is the other fitting half of the two fitting portions divided and the other fitting of the two fitting portions facing in the second alignment direction The chip-type electrolytic capacitor according to claim 3, wherein the chip-type electrolytic capacitor is connected to a portion. A capacitor element, a pair of lead wires connected to the capacitor element, a bottomed cylindrical storage container for storing the capacitor element, and sealing the open end of the storage container and the pair of lead wires A plurality of annular recesses extending along a circumferential direction formed on an outer peripheral surface of a portion of the capacitor body facing the sealing body of the storage container of the capacitor body having a sealing body formed with an inserted insertion hole; A restriction for attaching the restriction member to the capacitor body by fitting the connection part of the restriction member having a fitting part and a connection part extending along the circumferential direction and connecting the plurality of fitting parts A member mounting process;
After the restricting member attaching step, the pair of lead wires of the capacitor body is inserted into holes of the insulating seat plate, and the seat plate is attached to the capacitor body in a state of facing the sealing body. Plate mounting process,
In the seat plate mounting step, the outer peripheral surface of the storage container is held by the inner surfaces of the plurality of wall portions formed on the surface of the seat plate facing the sealing body, and the plurality of wall portions are interposed between the plurality of wall portions. A method of manufacturing a chip-type electrolytic capacitor, wherein each of the fitting portions is fitted.

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