JP6670170B2 - Chip type electrolytic capacitor and manufacturing method thereof - Google Patents

Description

  The present invention relates to a chip-type electrolytic capacitor which is used by being mounted on a substrate as a surface-mount type, and in which vibration resistance is particularly required.

  Patent Literature 1 discloses an insulated terminal plate (seat plate) in which support pillars (wall portions) that come into contact with the metal case (storage container) that stores the capacitor element so as to hold the peripheral surface on the inner surface thereof are square. A chip-type electrolytic capacitor is described. The supporting column of the insulating terminal plate of the chip-type electrolytic capacitor is elastically deformable and is formed to have a height equal to or higher than an annular drawing portion (recess) provided in the metal case. For this reason, even when vibration is applied to the chip-type electrolytic capacitor, the support columns of the insulating terminal plate abut against 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 columns formed on the insulated terminal plate are spaced apart from each other, and are bent in consideration of attachment of the metal case to the insulated terminal plate. It is easily formed. For this reason, under severe conditions in which relatively strong vibrations occur in the chip-type electrolytic capacitor, it has not been possible to reliably prevent the storage container from swinging greatly and dropping the chip-type electrolytic capacitor from the substrate.

  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-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 an opening end of the storage container. A capacitor body having a sealing 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 formed; An insulating seat plate attached to the capacitor main body in a state facing the sealing plate, and a regulating member for restricting runout of the capacitor main body with respect to the seat plate, and facing the sealing body of the seat plate. On the surface, a plurality of wall portions are provided which are arranged apart from each other along the circumferential direction of the storage container and abut against the storage container so as to hold the outer peripheral surface of the storage container on the inner surface. An annular concave portion extending along the circumferential direction and facing the plurality of wall portions is formed on an outer peripheral surface of a portion of the storage container facing the sealing body, The plurality of fittings respectively fitted between the plurality of wall portions by being in contact with the circumferentially opposed wall surfaces of two of the plurality of wall portions adjacent in the circumferential direction among the plurality of wall portions. A mating portion; and a connecting portion that extends along the circumferential direction while fitting into the concave portion and connects the fitting portion.

The method of manufacturing a chip-type electrolytic capacitor according to the present invention may further include a capacitor element, a pair of lead wires connected to the capacitor element, a bottomed cylindrical storage container for storing the capacitor element, and And a sealing body having a through hole through which the pair of lead wires are inserted, and a sealing body having a through hole through which the pair of lead wires are inserted. The connecting portion of the regulating 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 the annular concave portion extending along the direction. In combination, after the regulating member attaching step of attaching the regulating member to the capacitor body, and after the regulating member attaching step, the pair of lead wires of the capacitor body are inserted into holes of an 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. Then, in the seat plate attaching step, the outer peripheral surface of the storage container is held by an inner surface of a plurality of wall portions formed on a surface of the seat plate facing the sealing body, and the outer surface of the plurality of wall portions is Each of the plurality of fitting portions is fitted between the plurality of wall portions by making contact with the circumferentially opposite wall surfaces of the two wall portions adjacent in the circumferential direction .

  Here, the term “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 concave portion come into contact with each other. This means that the connection part fits into the recess.

  According to this configuration, the plurality of fitting portions of the regulating member are fitted between the plurality of wall portions of the seat plate, respectively, and the connecting portions connecting the plurality of fitting portions are fitted into the concave portions of the storage container. As a result, it is possible to restrict the deflection of the capacitor body relative to the seat plate. That is, even if the plurality of wall portions are formed to be bent in consideration of the mounting of the capacitor body (storage container), the deformation of the wall portions is regulated by the regulating member, so that the swinging of the capacitor body with respect to the seat plate is also regulated. Is done. For this reason, the capacitor main body is held not only by the plurality of walls but also by the regulating member, the holding force of the capacitor main 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 portions are arranged at four corners of the seat plate, and the fitting portion is provided between each of the four wall portions. It is preferable to be fitted in. As a result, the direction in which the two wall portions adjacent to each other with the fitting portion interposed therebetween is the direction along each side of the seat plate. Therefore, the regulating member makes it difficult for the capacitor body to swing in the direction along each side of the seat plate.

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

  Further, in the present invention, the first arrangement direction of the two wall portions adjacent to each other across one fitting portion of the plurality of fitting portions, and two adjacent wall portions to each other across another fitting portion. The second arrangement direction of the wall is orthogonal to the second arrangement direction, two of the four engagement parts are opposed to each other in the first arrangement direction, and the remaining two of the engagement parts are the two. Each of the two fitting portions opposed to each other in the second arrangement direction and arranged in the first arrangement direction includes two fitting halves divided in the circumferential direction. One of the two connecting halves is divided into one of the two fitting halves, and one of the two fitting halves facing in the second alignment direction. And the other split connection half is connected to the other fitting half of the two split fitting portions, 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 restrict the deflection of the capacitor body in the first and second alignment directions with respect to the seat plate. Further, the regulating member can be easily attached 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 connecting portion connecting the plurality of fitting portions is fitted into the concave portion of the storage container. Therefore, it is possible to restrict the deflection of the capacitor body with respect to the seat plate. That is, even if the plurality of wall portions are formed to be bent in consideration of the mounting of the capacitor body (storage container), the deformation of the wall portions is regulated by the regulating member, so that the swinging of the capacitor body with respect to the seat plate is also regulated. Is done. For this reason, the capacitor main body is held not only by the plurality of walls but also by the regulating member, the holding force of the capacitor main 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. FIG. 2 is a sectional view taken along the line II-II shown in FIG. 1. FIG. 4 is an exploded perspective view of the chip-type electrolytic capacitor according to the embodiment of the present invention when a restricting member is separated. It is a front view of the capacitor main body shown in FIG. It is a perspective view of the seat plate shown in FIG. FIGS. 2A and 2B show a regulating member shown in FIG. 1, wherein FIG. 1A is a plan view and FIG.

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

  As shown in FIGS. 1 to 3, the chip-type electrolytic capacitor 100 according to the present embodiment includes a capacitor body 10, a seat plate 20, and a regulating member 30, and a pair of lead wires 3 of the capacitor body 10 are connected to a (Not shown) to be mounted on the surface of the substrate. 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 electrolytic solution, and a pair of leads connected to the capacitor element 1. It has a wire 3 and a sealing body 4 that seals the open end of the storage container 2 and has an insertion hole 4a through which the pair of lead wires 3 are inserted.

  The 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 each having an oxide film formed on an aluminum foil, and winding the leads via a separator.

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

  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 body 10 in a state in which the seat plate 20 is in contact with the end (the lower end in FIG. 2) of the capacitor body 10 on the sealing body 4 side. That is, the seat plate 20 is attached to the capacitor body 10 in a state of facing the sealing body 4. In addition, the seat plate 20 has a flat seat plate main body 21 as shown in FIGS. 1 to 3 and 5. Although the seat plate body 21 has a substantially square planar shape, the planar shape is not particularly limited. The seat plate body 21 has a hole 20a through which a pair of lead wires 3 led out of the capacitor element 1 is inserted, and a groove 20b for accommodating the pair of lead wires 3 inserted through the hole 20a at right angles. are doing.

  A surface 21 a of the seat plate body 21 facing the sealing body 4 is arranged apart from each other along the circumferential direction A of the outer peripheral surface 2 a of the storage container 2 so as to hold the outer peripheral surface 2 a of the storage container 2 on the inner surface. Are provided integrally with each other. The four wall portions 22 are arranged at respective corners (squares) of the surface 21 a of the seat plate main body 21 facing the sealing body 4. Thereby, the two adjacent wall portions 22 are arranged side by side along the side of the seat plate body 21.

  More specifically, in FIG. 3 and FIG. 5, the wall portion 22 on the near side in the drawing and the wall portion 22 on the right side of the wall portion 22 are arranged in the first arrangement direction B along one side of the seat plate body 21. Are arranged side by side. 3 and 5, the wall 22 on the front side of the drawing and the wall 22 on the left side of the wall 22 are connected to the one side of the seat plate body 21 (side parallel to the first arrangement direction B). Are arranged side by side along the second arrangement direction C along the other side orthogonal to the other side. In addition, the wall portion 22 located on the farthest side in the drawing in FIG. 5 and the wall portion 22 located on the right side of the wall portion 22 are arranged side by side in the second arrangement direction C. In addition, the wall portion 22 located on the farthest side in the drawing in FIG. 5 and the wall portion 22 on the left side of the wall portion 22 are arranged side by side in the first arrangement direction B. Note that 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 22a facing in the direction in which the two adjacent wall portions 22 are arranged.

  As shown in FIG. 3, the heights of the four wall portions 22 of the seat plate 20 attached to the capacitor main body 10 extend beyond the concave portion 2b of the storage container 2 from the surface 21a. That is, the concave portion 2 b faces the four wall portions 22. Moreover, it is formed of an insulating resin material such that the dimension between the inner surfaces of the four wall portions 22 is slightly smaller than the outer shape of the storage container 2. 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 has substantially the same size as the outer shape of the storage container 2, and the tip portion of the wall portion is slightly smaller than the outer shape of the storage container 2. It may be. Further, a protrusion protruding inward may be provided at the tip of the wall.

  The seat plate 20 is provided with two chamfers 23. These chamfered portions 23 are provided at two corners of the seat plate 20 which are both ends of the side of the seat plate main body 21 with which the end of one of the grooves 20b accommodating the pair of lead wires 3 is in contact. The polarity is displayed by the chamfered portion 23.

  The regulating member 30 is made of a synthetic resin and has an insulating property. The regulating member 30 has four fitting portions 31 and 32 and a connecting portion 33 connecting the four fitting portions 31 and 32, as shown in FIGS. The swing of the seat 10 with respect to the seat plate 20 is regulated. As shown in FIGS. 1 and 3, two fitting portions 31 of the four fitting portions 31 and 32 are arranged between two adjacent wall portions 22 in the second arrangement direction C. The two fitting portions 32 are arranged between two adjacent wall portions 22 arranged in the first arrangement direction B. That is, the two fitting portions 31 are arranged facing each other in the first arrangement direction B, and the two fitting portions 32 are arranged facing each other in the second arrangement direction C. The four fitting portions 31 and 32 are arranged in contact with the storage container 2 so as to hold the outer peripheral surface 2a of the storage container 2 on the inner surface when the regulating member 30 is attached to the capacitor body 10. .

  As shown in FIG. 1, the four fitting portions 31 and 32 are formed so as to fit between the four wall portions 22 of the seat plate 20. More specifically, each of the fitting portions 31 and 32 is formed in a plate shape, and has a width just fitting between two adjacent wall portions 22. Further, when the fitting portions 31 and 32 are fitted between the corresponding two wall portions 22, the two fitting portions 31 and 32 are in contact with the two wall surfaces 22 a constituting the space between the two wall portions 22 while being in contact with the two wall surfaces 22 a. It has contact surfaces 31c and 32a. That is, the contact surfaces 31c and 32a are also configured to face the arrangement directions B and C of the wall surfaces 22a that form the space between the two wall portions 22 where the fitting portions 31 and 32 are fitted.

  In addition, each of the two fitting portions 31 opposed to each other in the first arrangement direction B is constituted by fitting half portions 31a and 31b divided into two in the circumferential direction A (or the second arrangement direction C). I have.

  The connection portion 33 has an annular shape extending along the circumferential direction A, as shown in FIGS. 1, 3, and 6. As shown in FIGS. 2 and 3, the connection portion 33 is formed in a shape that just fits into the recess 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 connecting portion 33 is in contact with the concave portion 2b when fitted to the concave portion 2b. The connection portion 33 is formed so that its inner diameter is slightly smaller than the outer diameter of the recess 2b. The cross-sectional shape of the connection portion 33 is not particularly limited, and may be any shape as long as it can be locked in the recess 2b.

  As shown in FIGS. 3 and 6, the connection portion 33 is configured by two connection half portions 33 a and 33 b divided in the circumferential direction A. One connecting half 33a of the two connecting halves 33a and 33b is connected to one fitting half 31a of the two fitting portions 31 and one fitting portion 32 of the two fitting portions 32. And are connected. The other connecting 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.

  Subsequently, a method for manufacturing the chip-type electrolytic capacitor 100 will be described.

  First, a high-purity aluminum foil is etched to increase the surface area, and the aluminum foil is subjected to a chemical conversion treatment to form an oxide film serving as a dielectric of the capacitor, and an etched cathode foil. Make it. A lead wire 3 is connected to each of the anode foil and the cathode foil (hereinafter, both of which will be referred to as “electrode foil”) by pinhole caulking, ultrasonic welding, or the like, and then wound through a separator to form a capacitor element. Prepare No. 1.

  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 is flattened. The gap between the insertion hole 4a of the sealing body 4 and the pair of lead wires 3 bonded to the electrode foil is sealed. At this stage, the capacitor body 10 is completed.

  Next, the connecting portion 33 of the regulating member 30 is fitted into the concave portion 2b of the capacitor body 10, and the regulating member 30 is attached to the capacitor body 10 (regulating member attaching step). That is, the connecting half 33a of the regulating member half composed of the split connecting half 33a, the two fitting half 31a and the fitting portion 32 connected thereto, and the split connecting half 33b. The connecting half 33b of the regulating member half composed of the two fitting half portions 31b and the fitting portion 32 connected thereto is fitted into the recess 2b, and both regulating member halves are connected. It is attached to the capacitor body 10. At this time, the four fitting portions 31 and 32 are brought into contact with the storage container 2 such that the inner surfaces of the four fitting portions 31 and 32 hold the outer peripheral surface 2a of the storage container 2.

  Next, after a pair of lead wires 3 of the capacitor body 10 to which the regulating member 30 is attached are inserted into the holes 20 a of the seat plate 20, the pair of lead wires 3 are bent at right angles to be inserted into the grooves 20 b of the seat plate 20. Let it be placed. In this way, the seat plate 20 is attached to the capacitor body 10 in a state where the seat plate 20 faces the sealing body 4 (a seat plate attaching step).

  At this time, the four wall portions 22 are brought into contact with the storage container 2 such that the inner surfaces of the four wall portions 22 of the seat plate 20 hold the outer peripheral surface 2a of the storage container 2. At this time, the fitting portions 31 and 32 are fitted between the four wall portions 22, respectively. That is, the fitting portion 32 is fitted between the two wall portions 22 adjacent in the first arrangement direction B, and the contact surface 32a of the fitting portion 32 is brought into contact with the wall surface 22a of the wall portion 22. Further, the fitting portions 31 are fitted between the two wall portions 22 adjacent in the second arrangement direction C, and the contact surface 31c of the fitting portion 31 is brought into contact with the wall surface 22a of the wall portion 22. Thus, the chip-type electrolytic capacitor 100 is manufactured.

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

  In addition, since the wall portions 22 are arranged at the four corners of the seat plate 20 and the fitting portions 31 and 32 are fitted between the four wall portions 22, respectively, the arrangement directions B and C of the wall portions 22 are arranged. Is the direction along each side of the seat plate 20 (the seat plate main body 21). Therefore, the regulating member 30 makes it difficult for the capacitor 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, 33b is fitted into each of two adjacent wall portions in the first and second arrangement directions B, C. Since the connection portion 33 is connected to the two fitting portions 31 and 32, the connection portion 33 is more easily attached to the capacitor body 10 than the regulating member 30 formed continuously in the circumferential direction A.

  One of the divided connection half portions 33a connects one of the two fitting portions 31 with one of the two fitting portions 32 and the other of the two fitting portions 32. Is connected to the other fitting half 31b of the two fitting portions 31 and the other fitting portion 32 of the two fitting portions 32. This makes it possible to effectively restrict the deflection of the capacitor body 10 in the first and second alignment directions B and C with respect to the seat plate 20. Further, the regulating member 30 can be easily attached to the capacitor body 10.

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

  The fitting portions 31 and 32 may not be in contact with the outer peripheral surface 2a of the storage container 2. The connection portion 33 may not be divided in the circumferential direction A. Further, the connection 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 between two adjacent wall portions 22 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 connecting portion 33 is divided into four in the circumferential direction A, and each of the divided connecting portions connects the half of the fitting portion 31 and the half of the fitting portion 32. .

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

DESCRIPTION OF SYMBOLS 1 Capacitor element 2 Storage container 2a Outer peripheral surface 2b Depression 3 Lead wire 4 Sealing body 4a Insertion hole 10 Capacitor main body 20 Seat plate 20a Hole 21a Surface 22 Wall 30 Regulation member 31 Fitting part 31a, 31b Fitting half part 32 Fit Joint 33 Connection part 33a, 33b Connection half A 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 the pair of lead wires closing an opening end of the storage container. A capacitor body having a sealing body with an inserted insertion hole formed therein,
A hole through which the pair of lead wires led out from the sealing body is inserted is formed, and an insulating seat plate attached to the capacitor body in a state facing the sealing body,
A restricting member for restricting deflection of the capacitor body with respect to the seat plate,
On a surface of the seat plate facing the sealing body, a plurality of seat plates are disposed apart from each other along a circumferential direction of the storage container and abut against the storage container so as to hold an outer peripheral surface of the storage container on an inner surface. Walls are formed,
On the outer peripheral surface of a portion of the storage container facing the sealing body, an annular recess extending along the circumferential direction and facing the plurality of walls is formed,
The regulating member is
A plurality of fitting portions respectively fitted between the plurality of wall portions by abutting on the circumferentially opposed wall surfaces of the two circumferentially adjacent two of the plurality of wall portions;
A chip-type electrolytic capacitor comprising: a connection portion that extends along the circumferential direction while being fitted into the concave portion and connects the fitted portion. The seat plate has a square planar shape,
The wall 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,
The chip-type electrolytic capacitor according to claim 2, wherein each connection half connects the fitting portions fitted on both sides of one of the plurality of wall portions. 4. . The first arrangement direction of the two wall portions adjacent to each other across one fitting portion of the plurality of fitting portions, and the second alignment direction of the two wall portions adjacent to each other across another fitting portion. The direction of arrangement is orthogonal,
Of the four fitting portions, two of the fitting portions face each other in the first alignment direction, and the remaining two fitting portions are arranged to face each other in the second alignment direction.
Each of the two fitting portions facing each other in the first arrangement direction includes two fitting halves divided in the circumferential direction,
One of the divided connecting halves is fitted with one of the two fitted halves of the two fitted portions and one of the two fitted portions facing each other in the second alignment direction. Connect with the department
The other split connection half is the other fitting half of the two split fitting portions and the other fitting portion of the two fitting portions facing each other in the second alignment direction. The chip type electrolytic capacitor according to claim 3, wherein the chip type electrolytic capacitor is connected to a part. 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 pair of lead wires closing an opening end of the storage container. 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 having a sealing body having an insertion hole formed therein are formed. The fitting of the restricting member having the fitting portion and the connecting portion extending along the circumferential direction and connecting the plurality of fitting portions is fitted, and the regulation member is attached to the capacitor body. A member mounting process,
After the restricting member attaching step, the pair of lead wires of the capacitor main body is inserted into holes of the insulating seat plate, and the seat for attaching the seat plate to the capacitor main body in a state facing the sealing body. Board mounting process,
In the seat plate attaching 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 circumferential direction of the plurality of wall portions is A chip-type electrolytic capacitor, wherein each of the plurality of fitting portions is fitted between the plurality of wall portions by being brought into contact with the circumferentially opposed wall surfaces of two of the wall portions adjacent to each other. Manufacturing method.

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