JP2015211101A - Electric component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric component which is usable under a high temperature environment and a high temperature/high humidity environment even when a capacitor element and a coil are stored in the same case.SOLUTION: In an electric component, a capacitor element 2 and a coil 5 are stored in a case 6. The case 6 includes: a division wall 64 which divides a capacitor storage part 62 for storing the capacitor element 2 from a coil storage part 63 for storing the coil 5 and a terminal arrangement part 68 used to dispose a terminal 4 connecting the capacitor element 2 with the coil 5, between the capacitor storage part 62 and the coil storage part 63. The capacitor element 2 is sealed by a resin 8 filling the capacitor element storage part 62.

Description

  The present invention relates to an electrical component in which a capacitor element and a coil are housed in a case.

  In an electrical component (for example, an LC filter) in which a capacitor element and a coil are accommodated in the same case, for example, as disclosed in Patent Document 1, the capacitor element and the coil are often arranged close to each other.

  In addition, when using a film capacitor as a capacitor element, it is necessary to ensure moisture resistance, but in an electrical component that houses a capacitor element and a coil together in the same case, for reasons such as easy assembly, In many cases, a so-called dip type capacitor in which a resin film is formed on the surface in advance by immersing the capacitor element in a resin or the like is used.

JP 2000-13166 A

  However, when the capacitor element and the coil are arranged close to each other as in the above configuration, the heat generated by the coil is transmitted to the capacitor element, which may adversely affect the capacitor element. In particular, when a dip type capacitor is used as the capacitor, the resin film is thin, so that there is a risk of being greatly affected.

  In addition, since the dip type capacitor has a concern about deterioration of characteristics in a high-temperature environment or a high-temperature and high-humidity environment, the place of use is limited regardless of heat generation from the coil. In addition, if the so-called case type capacitor is used instead of the dip type capacitor, the capacitor element is housed in the case and the case is filled with resin and the capacitor element is resin-sealed. It can be ensured, and it is also possible to suppress deterioration of characteristics. However, in the electrical component in which the coil is housed in the case together with the capacitor element, the coil is buried in the resin in accordance with the capacitor element, so that there are disadvantages such as the coil cannot be replaced. Further, since the heat generated in the coil is accumulated in the resin and is difficult to be released out of the case, simply adopting the case type only creates a new problem.

  Therefore, the present invention has been made to solve the above-described problems, and even when the capacitor element and the coil are housed in the same case, it can be used in a high temperature environment or a high temperature and high humidity environment. The aim is to provide possible electrical components.

  In order to solve the above problems, the electrical component of the present invention is a case in which the capacitor element 2 and the coil 5 are stored in a case 6, and the case 6 includes a capacitor storage portion 62 for storing the capacitor element 2, A partition wall 64 that separates the coil 5 and a terminal placement portion 68 for placing the terminal 4 that connects the capacitor element 2 and the coil 5 are provided between the coil housing portion 63 that houses the coil 5. The capacitor element 2 is sealed with a resin 8 filled in the capacitor element housing portion 62.

  In the electrical component of the present invention, a partition wall is provided between the capacitor element storage portion and the coil storage portion, in other words, the capacitor element storage portion and the coil storage portion are partitioned by the partition wall, Resin can be filled only in the capacitor element housing portion. Therefore, in the coil housing portion, a vent hole for promoting heat dissipation can be formed, and the thermal influence on the capacitor element due to the heat generated by the coil can be reduced. In addition, the so-called case type, in which the capacitor element is housed in a case and sealed with a resin, can ensure the thickness of the resin, improving high-temperature durability and moisture resistance compared to a dip type capacitor, It can be used under high temperature and high humidity.

  In addition, it is the capacitor element storage part that is filled with resin, and since the resin is not filled up to the coil storage part, it is possible to replace the coil according to the required inductance, Since the terminal arrangement part is provided between the capacitor element storage part and the coil storage part, the capacitor element and the coil are separated from each other, thereby reducing the thermal effect on the capacitor element due to the heat generated by the coil. Can do.

It is a disassembled perspective view which shows the electrical component which concerns on one Embodiment of this invention. Similarly, it is a sectional view of the electrical component. It is a disassembled perspective view which shows one process of an assembly stage.

  Next, an embodiment of the electrical component 1 of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 to 3, the electrical component 1 of the present invention includes a capacitor element 2, a mounting leg 3, a terminal 4, a coil 5, and a case 6 for housing them. Hereinafter, each component will be described.

  The capacitor element 2 is a film capacitor formed by winding a metallized film in which a metal is vapor-deposited on a film made of PP or PET, for example, as shown in FIG. 2 and FIG. The part is provided with electrode parts 21 and 22 formed by thermally spraying metallicon. Note that one electrode part 21 is connected to a mounting leg 3 for connecting the capacitor element 2 and an external device, and the other electrode part 22 is a terminal for connecting the capacitor element 2 and the coil 5. 4 is connected.

  The mounting leg 3 is configured by, for example, pressing a copper plate. Specifically, as shown in FIG. 3, the strip-shaped substrate is divided into three strips in the longitudinal direction from the end in the longitudinal direction to the vicinity of the central portion, and is formed into three strips. The central elongated strip is bent approximately 90 degrees in the plate thickness direction, so that a connecting portion 31 for connecting to one electrode portion 21 of the capacitor element 2 is formed. The connecting portion 31 is provided with a soldering protrusion 32 for facilitating soldering to one electrode portion 21 of the capacitor element 2. Further, a mounting hole 33 for connection to an external device (not shown) is provided in the vicinity of the longitudinal end of the substrate on the opposite side to the divided side.

The terminal 4 is also configured by, for example, pressing a copper plate. Specifically, as shown in FIG. 3, among the substrates that are substantially cross-shaped in plan view in the unfolded (unfolded) state, the long extending piece 41 is bent into a substantially L-shape when viewed from the side. Thus, a connection portion 42 for connecting to the other electrode portion 22 of the capacitor element 2 is formed. Further, in order to straddle a partition wall 64 of the case 6 to be described later, an inverted U-shaped bent portion 43 is formed in the vicinity of the proximal end portion of the elongated extending piece 41. Further, a short extending piece 44 extending in a direction opposite to the long extending piece 41 is bent in the same direction as the bent portion 43 (upward in the drawing). The short extending piece 44 has a notch provided at the center in the width direction at the tip thereof to be bifurcated, and the tip of the coil 5 can be inserted into the notch 45. Further, a pair of extended pieces 46, 46 extending in a direction orthogonal to the extended pieces 41, 44 from between the long extended piece 41 and the short extended piece 44 are bent. The connector 43 is bent in the opposite direction (downward in the figure) to the portion 43 and the short extending piece 44 to form a connector for connection to an external device.

  The coil 5 is configured by, for example, winding a copper wire 51 around an iron core 52 in a spiral shape. Note that one end of each end of the copper wire 51 extends to the other end through the coil 5 so as to extend in the same direction and close to each other.

  The case 6 is a substantially hollow cube having an opening 61 provided on the upper surface side. As shown in FIG. 3, the case 6 has a capacitor element storage portion 62 for storing the capacitor element 2 and a coil 5. The coil housing part 63 is provided integrally. In addition, a partition wall 64 that separates the capacitor element storage portion 62 and the coil storage portion 63 is provided between the capacitor element storage portion 62 and the coil storage portion 63. When the capacitor element 2 is stored in the capacitor element storage portion 62, the partition wall 64 is as high as the case side wall portion 66 so as to be positioned above the connection portion 31 of the mounting leg 3 connected to the capacitor element 2. Even when the capacitor element housing portion 62 is filled with the resin 8 and the capacitor element 2 is sealed with the resin, the resin 8 does not leak out of the capacitor element housing portion 62. Has been. Therefore, it is possible to make holes in the case bottom surface portion 65 and the side wall portions 66 other than the capacitor element storage portion 62. In this embodiment, as shown in FIG. A vent 67 is provided at a location corresponding to the portion 63.

  Further, a terminal arrangement portion 68 for arranging the terminals 4 for connecting the capacitor element 2 and the coil 5 is provided between the capacitor element storage portion 62 and the coil storage portion 63. The terminal arrangement part 68 is shallower than the capacitor element accommodation part 62 and the coil accommodation part 63 in order to project the connector (a pair of extending pieces 46, 46) of the terminal 4 from the case bottom part 65 side to the outside of the case 6. And an insertion hole 69 through which the connector can be inserted.

  The case 6 further includes a lid 7 for closing the opening 61 provided on the upper surface side of the case 6. Also in the lid 7, a vent hole 71 is provided in a portion facing the coil storage portion 63.

  As mentioned above, although each component was demonstrated, the assembly procedure of the electrical component 1 is demonstrated from this.

  First, as shown in FIG. 3, two capacitor elements 2 are arranged side by side, and the connection portion 31 of the mounting leg 3 is attached to one electrode portion 21 (upper side in the drawing) of the capacitor element 2 to perform soldering or the like. Connect both. Further, the connection portions 42 of the two terminals 4 are respectively addressed to the other electrode portion 22 (lower side in the figure) of the capacitor element 2, and both are connected by soldering or the like. At this time, the elongated extending piece 41 is arranged along the side surface of the capacitor element 2.

  The capacitor element 2, the mounting leg 3, and the terminal 4 integrated in this way are accommodated in the case 6. Specifically, the elongated extension piece 41 of the capacitor element 2, the mounting leg 3, and the terminal 4 is accommodated in the capacitor element accommodation portion 62, and the other part of the terminal 4 is arranged in the terminal arrangement portion 68. At this time, the bent portion 43 of the terminal 4 straddles the upper surface of the partition wall 64. Further, the connector of the terminal 4 is inserted into the insertion hole 69 provided in the terminal arrangement portion 68 and protruded out of the case 6.

Thereafter, the capacitor element housing portion 62 is filled with the resin 8, and the capacitor element 2 is resin-sealed. It is to be noted that the resin 8 is filled only in the capacitor element housing portion 62 and not in the terminal arrangement portion 68 or the coil housing portion 63.

  Next, while the coil 5 is housed in the coil housing portion 63, the distal end portion of the coil 5 is inserted into the cutout portion 45 provided at the distal end of the short extending piece 44 of the terminal 4, and the terminal 4 and the coil 5 are connected. Connecting.

  Then, the lid 7 is attached so as to close the case opening 61 and the assembly of the electrical component 1 is completed.

  In the electrical component 1 having the above-described configuration, the capacitor element storage portion 62 and the coil storage portion 63 are partitioned by the partition wall 64, so that the capacitor element 2, the coil 5, and the like are stored in one case 6. Nevertheless, the resin 8 can be filled only in the capacitor element storage portion 62. Therefore, in the coil housing part 63, the air holes 67 for promoting heat dissipation can be formed in the case wall surface, and the thermal influence on the capacitor element 2 due to the heat generated by the coil 5 can be reduced. In addition, the so-called case type in which the capacitor element 2 is housed in the case 6 and sealed with resin can sufficiently secure the thickness of the resin 8, and has higher temperature durability and moisture resistance than the dip type capacitor. It becomes possible to use in a high temperature environment or a high temperature and high humidity environment.

  Further, since the capacitor 8 is filled with the resin 8 and the coil 8 is not filled with the resin 8, it is possible to replace the coil 5 according to the required inductance. is there. In particular, since the tip of the coil 5 is simply connected to the notch 45 of the terminal 4 so that the replacement is easy. Further, since the terminal arrangement portion 68 is provided between the capacitor element storage portion 62 and the coil storage portion 63, the capacitor element 2 and the coil 5 are separated from each other, and the coil 5 generates heat. The thermal influence on the capacitor element 2 can be reduced.

  As mentioned above, although typical embodiment of this invention was described, this invention is not limited to the said embodiment, It can be implemented in various changes within the scope of this invention. For example, the air hole 67 of the coil housing portion 63 is provided in the case bottom surface portion 65, but may be provided in the case side wall portion 66. Moreover, not only the coil 5 but an electrical component may be comprised combining various components.

  1..Electric parts 2..Capacitor element 4 ... Terminal 5..Coil 6 ... Case 62..Capacitor storage part 63..Coil storage part 64..Partition wall 68 .. Terminal arrangement, 8 .... resin

Claims (1)

  In the electrical component in which the capacitor element (2) and the coil (5) are stored in the case (6), the case (6) includes a capacitor storage portion (62) for storing the capacitor element (2), and the coil ( 5) for disposing a partition wall (64) separating the two and a terminal (4) for connecting the capacitor element (2) and the coil (5) between the coil housing part (63) for housing 5). Terminal arrangement part (68), and the capacitor element (2) is sealed with a resin (8) filled in the capacitor element storage part (62) .

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