JP2006262347A - Three-terminal filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a three-terminal filter of which reliability is improved by protecting a chip component and increasing fixation of a core. <P>SOLUTION: The chip component is bonded with a metal frame terminal which is bonded to a first core 4 and integrated, and a metal terminal 6. While holding the first core 4 between a first core presser 62A and a second core presser 62B, in the metal terminal 6, a first position deviation proofing piece 62C extending from the first core presser 62A and a second position deviation proofing piece 62D extending from the second core presser 62B are bonded to a planar part 61 by solders 62E, 62F, respectively. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a three-terminal filter.

Conventionally, a three-terminal filter, which is an LC filter in which an inductor and a chip component, for example, a capacitor, are combined in one component has been known. This three-terminal filter is composed of an input terminal, an output terminal, and a ground terminal. The terminal is provided (for example, refer patent document 1). Therefore, it is necessary to electrically join the input terminal, the output terminal, and the ground terminal to the electrodes provided on the substrate.
Japanese Utility Model Publication No. 4-55827

  However, in the conventional three-terminal filter, the electrode of the capacitor, which is the ground terminal, is used as the connection portion to the electrode as it is, so that the protection of the electrode portion of the capacitor is not sufficient until it is electrically connected to the electrode on the substrate. Further, when some stress is applied to the three-terminal filter when the capacitor electrode portion is directly bonded to the substrate, the capacitor may be mechanically destroyed due to the direct stress applied to the capacitor.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a three-terminal filter that protects chip components and increases the reliability of a core to increase reliability.

  To achieve the above object, the present invention provides a tip portion having a pair of external electrodes, a first core portion provided with a first leg portion, and a second leg portion provided in parallel with the first leg portion. And a metal frame terminal that joins to one external electrode of the chip part, and a core that defines a space for accommodating the chip part between the first leg part and the second leg part. And a three-terminal filter including a metal terminal joined to the other external electrode of the chip component, wherein the first core portion is provided on the first leg portion and is directed from the first leg portion to the second leg portion. A first sandwiched surface extending in a direction, a second sandwiched surface facing the first sandwiched surface, a plane intersecting the first sandwiched surface and the second sandwiched surface, and an inner wall of the space And a metal terminal is provided on one side of each of the flat plate portion and both sides of the flat plate portion. A pair of first core pressing pieces and second core pressing pieces, which form an acute angle with the flat plate portion and sandwich the first holding surface and the second holding surface, respectively, and the first edge and the first of the flat plate portion Provided is a three-terminal filter provided with a first displacement prevention piece that is connected to an edge of a core pressing piece and abuts against a first space defining surface.

  According to such a configuration, the chip component is electrically joined to the circuit on the substrate via the metal terminal. Further, the metal terminal to which the chip component is joined is held between the first core portions. And since the 1st core pressing piece which is a part which pinches | interposes a 1st core part is connected with the 1st position shift prevention piece and the flat plate part, it is suppressed that it expands. Therefore, even if a stress is applied to the three-terminal filter after the metal terminal is electrically connected to the circuit, the metal terminal is prevented from being detached from the first core portion, and the durability against stress is improved as a whole three-terminal filter. .

  In the above configuration, the metal terminal includes a first flat plate portion holding piece connecting portion that connects the first edge portion of the flat plate portion and the edge portion of the first core holding piece, an edge portion of the first core holding piece, and a first position. A first presser piece positional displacement prevention piece coupling portion that couples the edge portion of the displacement prevention piece, and a first positional displacement prevention piece flat plate that connects the edge portion of the first positional deviation prevention piece and the first edge portion of the flat plate portion. It is preferable that the first flat plate portion pressing piece connecting portion, the first pressing piece position deviation preventing piece connecting portion, and the first position deviation preventing piece flat plate portion connecting portion are configured by bending or joining. .

  According to such a structure, a 1st core pressing piece and a 1st position shift prevention piece can be comprised easily. In addition, when the first core portion is held with the metal terminal, the flat plate portion, the first core pressing piece, and the first misalignment prevention piece can be held without being connected. The first core portion can be held between the metal terminals.

  The first sandwiched surface and the second sandwiched surface extend in the direction in which the first leg portion and the second leg portion extend, and the metal terminal includes the second edge portion of the flat plate portion and the second core pressing piece. It is preferable that a second misalignment prevention piece connected to the edge of the first abutting portion and contacting the first space defining surface is provided.

  Since the second core pressing piece, which is a portion that holds the first core portion, is connected to the second misalignment prevention piece and the flat plate portion, it is prevented from expanding. Since the opposing first core pressing pieces are also prevented from expanding, even if the stress is applied to the three-terminal filter after the metal terminals are electrically connected to the circuit, the metal terminals are removed from the first core portion. This further suppresses detachment and further improves the durability against stress as the entire three-terminal filter.

  In addition, the metal terminal includes a second flat plate portion holding piece connecting portion that connects the second edge portion of the flat plate portion and an edge portion of the second core holding piece, and an edge portion of the second core holding piece and second position prevention. A second presser piece misalignment prevention piece coupling portion that couples the edge portion of the piece, and a second misalignment prevention piece flat plate portion connection that couples the edge portion of the second misalignment prevention piece and the second edge portion of the flat plate portion. It is preferable that the second flat plate portion pressing piece connecting portion, the second pressing piece position deviation preventing piece connecting portion, and the second position deviation preventing piece flat plate portion connecting portion be configured by bending or joining.

  According to such a structure, a 2nd core pressing piece and a 2nd position shift prevention piece can be comprised easily. In addition, when the first core portion is sandwiched with the metal terminal, the flat plate portion, the second core pressing piece, and the second misalignment prevention piece can be sandwiched without being connected. The first core portion can be held between the metal terminals.

  The second core portion includes a third sandwiched surface that is provided on the second leg portion and extends in a direction from the second leg portion toward the first leg portion, and a fourth sandwiched surface that faces the third sandwiched surface. And a second space defining surface which is on a plane intersecting the third sandwiched surface and the fourth sandwiched surface and forms the inner wall of the space, and the metal terminals are provided on the other side of each side. A pair of third core pressing pieces and fourth core pressing pieces which are provided and form an acute angle with the flat plate portion and sandwich the third and fourth clamped surfaces, respectively, and the third edge portion of the flat plate portion and the third edge portion It is preferable that a third misalignment prevention piece connected to the edge of the three-core pressing piece and contacting the second space defining surface is provided.

According to such a configuration, the metal terminal to which the chip component is bonded is held between the second core portions. And since the 3rd core pressing piece which is a part which clamps the 2nd core part is connected with the 3rd position shift prevention piece and the flat plate part, it is suppressed that it expands. Therefore, even if a stress is applied to the three-terminal filter after the metal terminal is electrically connected to the circuit, the metal terminal is prevented from coming off from the second core portion together with the first core portion, and the entire three-terminal filter is resistant to stress. Durability is further improved.
In addition, the metal terminal includes a third flat plate portion holding piece connecting portion that connects the third edge portion of the flat plate portion and the edge portion of the third core holding piece, an edge portion of the third core holding piece, and a third misalignment prevention piece. A third presser piece misalignment prevention piece coupling portion that couples the edges of the plate, and a third misalignment prevention piece flat plate portion coupling portion that couples the edge of the third misalignment prevention piece and the third edge of the flat plate portion. It is preferable that the third flat plate portion pressing piece connecting portion, the third pressing piece position deviation preventing piece connecting portion, and the third position deviation preventing piece flat plate portion connecting portion are formed by bending or joining.

  According to such a structure, a 3rd core pressing piece and a 3rd position shift prevention piece can be comprised easily. In addition, when the second core portion is sandwiched with the metal terminal, the flat plate portion, the third core pressing piece, and the third misalignment prevention piece can be sandwiched without being connected. The second core portion can be held between the metal terminals.

  The third sandwiched surface and the fourth sandwiched surface extend in the direction in which the first leg portion and the second leg portion extend, and are joined to the metal terminal so as to cross the flat plate portion and the fourth core pressing piece. It is preferable that a fourth misregistration prevention piece that is in contact with the second space defining surface is provided.

  Since the fourth core pressing piece, which is a portion that holds the second core portion, is connected to the fourth misalignment prevention piece and the flat plate portion, it is suppressed from expanding. Since the expansion of the opposing third core holding piece is also suppressed, even if the stress is applied to the three-terminal filter after electrically connecting the metal terminal to the circuit, as with the first core part, The metal terminal is further prevented from coming off from the second core portion, and the durability against stress is further improved as the entire three-terminal filter.

  Further, the metal terminal includes a fourth flat plate portion holding piece connecting portion that connects the fourth edge portion of the flat plate portion and an edge portion of the fourth core holding piece, an edge portion of the fourth core holding piece, and a fourth misalignment prevention piece. A fourth presser piece displacement prevention piece coupling portion that couples the edges of the plate, and a fourth displacement prevention piece flat plate portion coupling portion that couples the edge of the fourth displacement prevention piece and the fourth edge portion of the flat plate portion. It is preferable that the fourth flat plate portion pressing piece connecting portion, the fourth pressing piece position deviation preventing piece connecting portion, and the fourth position deviation preventing piece flat plate portion connecting portion are formed by bending or joining.

  According to such a configuration, the fourth core pressing piece and the fourth misalignment preventing piece can be easily configured. In addition, when the second core portion is sandwiched with the metal terminal, it is possible to sandwich the flat plate portion, the fourth core pressing piece, and the fourth misalignment prevention piece in an unconnected state. The second core portion can be held between the metal terminals.

  According to the three-terminal filter of the present invention, it is possible to provide a three-terminal filter that protects the chip parts and increases the reliability of the core to increase the reliability.

  A three-terminal filter according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of the three-terminal filter 1 in a plan direction, and FIG. 2 is an exploded perspective view showing an assembly of the three-terminal filter 1.

  As shown in FIGS. 1 and 2, the three-terminal filter 1 includes a chip component 2, a metal frame terminal 3, a first core 4, a second core 5, a metal terminal 6, and a metal cover 7. Is done. The three-terminal filter 1 has a size of 3.2 (horizontal width) mm × 1.6 (vertical width) mm × 2.1 (height) mm. The chip component 2 is a capacitive element (for example, a chip capacitor or a chip varistor) having a substantially rectangular parallelepiped shape and having external electrodes 2A and 2B (FIG. 3) at both ends in the longitudinal direction.

  The first core 4 is made of ferrite, composite ferrite, or the like. As shown in FIG. 2, the first surface 41, the second surface 42, the third surface 43, the fourth surface 44, A fifth surface 45 and a sixth surface 46 are included.

  The first surface 41 and the second surface 42 are parallel surfaces facing each other, and an opening is formed between the first surface 41 and the second surface 42 on the first surface 41 side and the second surface 42 side. A through-hole 47 is formed. Further, the first surface 41 becomes a first space defining surface that defines a later-described space for storing the chip component 2. The third surface 43 and the fourth surface 44 are opposing surfaces parallel to each other, and the second surface 42 and the third surface 43 intersect at substantially right angles.

  The fifth surface 45 is inclined in the opposite direction to the first inclined surface 45A, the first central surface 45B, and the first inclined surface 45A intersecting with the fourth surface 44 at an acute angle, and is acutely angled with the third surface 43. And the second inclined surface 45C intersecting with each other. The sixth surface 46 is opposite to the fifth surface 45 and has the same structure as the fifth surface 45, and includes a first inclined surface 46A that intersects the fourth surface 44 at an acute angle, and a first center. The surface 46B includes a second inclined surface 46C that is inclined in the opposite direction to the first inclined surface 46A and intersects the third surface 43 at an acute angle. The second inclined surface 45C and the second inclined surface 46C are arranged in a substantially C shape and are respectively sandwiched by metal terminals 6 described later. The fifth surface 45 and the sixth surface 46 are a first sandwiched surface and a second sandwiched surface, respectively.

  The second core 5 is made of the same material as the first core 4 and has a mirror-symmetrical configuration with respect to the first surface 41 of the first core 4, and includes a first surface 51, a second surface 52, and a third surface. The surface 53, the fourth surface 54, the fifth surface 55, and the sixth surface 56 are configured, and one end and the other end of the through hole 57 are opened on the first surface 51 and the second surface 52, respectively. ing. In addition, the first surface 51 is a second space defining surface that defines a later-described space for storing the chip component 2. The third surface 53 and the fourth surface 54 are opposite surfaces that are parallel to each other, and the second surface 52 and the third surface 53 intersect at a substantially right angle.

  The fifth surface 55 includes a first inclined surface 55A, a first central surface 55B, and a second inclined surface 55C, and the sixth surface 56 includes a first inclined surface 56A, a first central surface 56B, and a second inclined surface. And an inclined surface 56C. The second inclined surface 55C and the second inclined surface 56C are locations that are respectively held by the metal terminals 6 to be described later, and the fifth surface 55 and the sixth surface 56 are respectively held by the third and fourth sandwiched surfaces. It becomes a surface.

  A space for the chip component 2 is defined by the first surface 41 that is the first space defining surface of the first core 4 and the first surface 51 that is the second space defining surface of the second core 5 (see FIG. 1). The intersection line between the first surface 41 and the fifth surface 45 of the first core 4 and the intersection line between the first surface 51 and the fifth surface 55 of the second core 5 constitute an opening of the space.

  As shown in FIG. 1, the metal cover 7 sandwiches the first core 4 and the second core 5 across the fourth surface 44 of the first core 4 and the fourth surface 54 of the second core 5. To do. As shown in FIG. 2, the metal cover 7 is a planar portion having a d1 side and a d2 side extending substantially orthogonal to the d1 side, and having the d1 side and the d2 side as both sides. A certain plate-like member 71 is provided. A first cover piece portion 72 is provided on one end side of each of the d1 side and the d2 side of the plate-like member 71, and a second cover piece portion 73 is provided on the other end side.

  The first cover piece 72 extends from the d1 side substantially perpendicular to the d1 side and forms an acute angle with the plate member 71, and extends from the d2 side substantially perpendicular to the d2 side. The second pressing piece 72 </ b> B is taken out and forms an acute angle with the plate-like member 71. The second cover piece portion 73 extends from the d1 side substantially orthogonal to the d1 side and forms an acute angle with the plate member 71, and extends from the d2 side substantially orthogonal to the d2 side. The fourth pressing piece 73 </ b> B is taken out and forms an acute angle with the plate-like member 71.

  The first holding piece 72A and the second holding piece 72B sandwich the first inclined surface 45A of the fifth surface 45 of the first core 4 and the first inclined surface 46A of the sixth surface 46. Similarly, the first inclined surface 55A of the fifth surface 55 of the second core 5 and the first inclined surface 56A of the sixth surface 56 are sandwiched by the third pressing piece 73A and the fourth pressing piece 73B. . Therefore, the 1st core 4 and the 2nd core 5 are united, the 4th surface 44 side and the 4th surface 54 side currently clamped by these cover piece parts 73 become a base end, the 3rd surface 43 side, The three surfaces 53 side are the first leg and the second leg, respectively.

  The metal frame terminal 3 is formed by cutting and bending a single metal plate whose entire surface is tin (Sn) plated, and includes a chip component holding portion 31, a first arm portion 32, and a second arm. A portion 33 is provided. The chip component holding portion 31 includes a substantially rectangular joint portion 31A, a pair of first wall portion 31B and second wall portion 31C extending substantially vertically from two opposite sides of the joint portion 31A, and the joint portion 31A. And a pair of first pressing pieces 31D extending substantially perpendicularly from two mutually opposing sides. The first arm portion 32 includes a first portion 32A extending substantially perpendicularly from the extending direction front end of the first wall portion 31B, and a second portion 32B extending substantially perpendicularly from the extending end of the first portion 32A. The portion 32B is configured to be substantially U-shaped with the third portion 32C extending substantially perpendicularly from the tip in the extending direction of the portion 32B. Similarly, the second arm portion 33 is substantially U-shaped from the first portion 33A extending substantially perpendicularly from the distal end in the extending direction of the second wall portion 31C, and the second portion 33B and the third portion 33C following the first portion 33A. It is configured.

  As shown in FIG. 4, the first arm portion 32 is inserted through the through hole 47 of the first core 4. The first surface 41 is formed by the first wall portion 31 </ b> B of the metal frame terminal 3 and the first portion 32 </ b> A of the first arm portion 32 at the corner portion formed on the opening portion fourth surface 44 side of the through hole 47. The corners are in contact. In the second surface 42, the corner portion formed by the first portion 32 </ b> A and the second portion 32 </ b> B of the first arm portion 32 is on the corner portion formed on the opening portion third surface 43 side of the through hole 47. It is in contact. In addition, the corner formed by the second portion 32B and the third portion 32C of the first arm portion 32 is in contact with the corner where the second surface 42 and the third surface 43 intersect, and further the third The portion 32 </ b> C is urged against and in contact with the third surface 43.

  Similarly, the second arm portion 33 is inserted through the through hole 57 of the second core 5. The first surface 51 is formed by the second wall portion 31 </ b> C of the metal frame terminal 3 and the first portion 33 </ b> A of the second arm portion 33 at the corner portion formed on the opening portion fourth surface 54 side of the through hole 57. The corners are in contact. In the second surface 52, the corner portion formed by the first portion 33 </ b> A and the second portion 33 </ b> B of the second arm portion 33 is formed at the corner portion formed on the opening portion third surface 53 side of the through hole 57. It is in contact. In addition, the corner formed by the second portion 33B and the third portion 33C of the second arm portion 33 is in contact with the corner where the second surface 52 and the third surface 53 intersect. The portion 33C is urged against and in contact with the third surface 53.

  The first arm portion 32 and the first core 4, and the second arm portion 33 and the second core 5 are integrated with each other by the contact by these corner portions, so that the metal frame terminal 3, the first core 4, and the second core 5 are integrated. It is difficult for a shift to occur between the core 5 and the core 5.

  In a state where the metal frame terminal 3 is integrated with the first core 4 and the second core 5, the chip component 2 is disposed in the space between the first core 4 and the second core 5 (FIG. 1 and FIG. 1). Figure 2). The chip component 2 is arranged between the first wall portion 31B and the second wall portion 31C with the external electrode 2A attached to the joint portion 31A by solder. A metal terminal 6 is attached to the external electrode 2B by soldering, and the metal terminal 6 sandwiches the first core 4 and the second core 5 together.

  As shown in FIG. 2, the metal terminal 6 has a flat plate portion 61 including a c1 side and a c2 side extending substantially parallel to the c1 side, and one end side of each of the c1 side and the c2 side. The provided first terminal piece 62, the second terminal piece 63 provided on the other end side of each of the c1 side and the c2 side, the first terminal piece 62 and the second terminal piece 63 And a pair of second pressing pieces 64 provided on the flat plate portion 61 therebetween. The first terminal piece portion 62 and the second terminal piece portion 63 are formed in mirror symmetry with respect to a plane orthogonal to the direction from the first terminal piece portion 62 to the second terminal piece portion 63.

  The first terminal piece 62 extends from one end side portion of the c1 side to one surface side of the flat plate portion 61 substantially orthogonal to the c1 side, and the first core has an acute angle with the flat plate portion 61 and the c1 side. A holding piece 62A and a second core holding piece 62B extending from one end side portion of the c2 side to one surface side of the flat plate portion 61 substantially parallel to the c2 side, and an angle between the flat plate portion 61 and the c2 side forming an acute angle. And. The location where the c1 side, which is the first edge of the flat plate portion 61, and the edge of the first core presser piece 62A are defined as the first flat plate portion presser piece connecting portion 62a. A portion connecting the c2 side and the edge of the second core pressing piece 62B is defined as a second flat plate pressing piece connecting portion 62b.

  From the second terminal piece 63 side of the first core holding piece 62A, there is provided a first misregistration preventing piece 62C that is substantially orthogonal to the c1 side and extends in the second core holding piece 62B side direction. Similarly, a second misalignment prevention piece 62D is provided from the second terminal holding piece 62B side of the second core holding piece 62B so as to be substantially orthogonal to the c2 side and extend in the first core holding piece 62A side direction. . A location where the edge of the first core pressing piece 62A and the first misalignment preventing piece 62C are connected is defined as a first pressing piece misalignment preventing piece connecting portion 62c, and the second core pressing piece 62B edge and the second misalignment are connected. A location where the prevention piece 62D is connected is defined as a second pressing piece displacement prevention piece connection portion 62d.

  The vicinity of the tip of the first deviation preventing piece 62C is substantially in contact with the flat plate portion 61, and solder 62E (first deviation preventing piece flat plate portion connecting portion) which is a joining member is dotted at the substantially contacting portion. The first displacement prevention piece 62C and the flat plate portion 61 are connected to each other. The vicinity of the tip of the second misalignment prevention piece 62D is also substantially in contact with the flat plate portion 61, and similarly, solder 62F (second misalignment prevention piece flat plate portion connecting portion) is dotted to provide the second misalignment prevention piece 62D and the flat plate portion. 61 is connected.

  Similarly to the first terminal piece 62, the second terminal piece 63 is flat so that the third core holding piece 63A and the fourth core holding piece 63B are parallel to the c1 side and the c2 piece, respectively. It extends to one surface side of the part 61 and forms an acute angle with the flat plate part 61, respectively. A portion connecting the c1 side that is the third edge of the flat plate portion 61 and the edge of the third core pressing piece 63A is defined as a third flat plate portion pressing piece connecting portion 63a. A portion connecting a certain c2 side and the edge of the fourth core pressing piece 63B is defined as a fourth flat plate pressing piece connecting portion 63b.

  A third misalignment preventing piece 63C is provided from the first terminal piece 62 side of the third core pressing piece 63A, and extends in the direction of the fourth core pressing piece 63B substantially orthogonal to the c1 side. Similarly, from the first terminal piece 62 side of the fourth core pressing piece 63B, there is provided a fourth misregistration prevention piece 63D that is substantially orthogonal to the c2 side and extends in the direction of the third core pressing piece 63A. . A portion connecting the edge of the third core pressing piece 63A and the third position deviation preventing piece 63C is defined as a third pressing piece deviation preventing piece connecting portion 63c, and the fourth core holding piece 63B edge and the fourth position deviation are defined. A location where the prevention piece 63D is connected is defined as a fourth pressing piece displacement prevention piece connection portion 63d.

  The vicinity of the tip of the third misregistration prevention piece 62C is substantially in contact with the flat plate portion 61, and solder 63E (third misalignment prevention piece flat plate portion connecting portion), which is a joining member, is dotted at the substantially contacting portion. Thus, the third misregistration preventing piece 63C and the flat plate portion 61 are connected. The vicinity of the tip of the fourth slip prevention piece 63D is also substantially in contact with the flat plate portion 61, and similarly, solder 63F (fourth slip prevention piece flat plate portion connecting portion) is spotted to form the fourth misalignment prevention piece 63D and the flat plate portion. 61 is connected.

  The second pressing piece 64 extends from the flat plate portion 61 at a position between the first terminal piece portion 62 and the second terminal piece portion 63 on the one surface side of the flat plate portion 61 substantially perpendicularly to the flat plate portion 61. ing.

  When the metal terminal 6 is attached to the first core 4, as shown in FIG. 4, the second inclined surface 45C of the fifth surface 45 is interposed between the first core pressing piece 62A and the second core pressing piece 62B. And the second inclined surface 46C of the sixth surface 46 are sandwiched. In this case, the length L in the cross-sectional width direction of the third surface 43 of the first core 4 is larger than the opening width l on the free end side of the first core pressing piece 62A and the second core pressing piece 62B.

  Since the first core pressing piece 62A and the second core pressing piece 62B are fixed to the flat plate portion 61 via the first positional deviation prevention piece 62C and the second positional deviation prevention piece 62D, respectively. It is suppressed that the front-end | tip part expands more than the present angle. Furthermore, the first core 4 clamped at one end by the metal terminal 6 has the first core pressing piece 62A and the first core pressing piece 62A and the first core pressing piece 62A sandwiched between the first core pressing piece 62A and the first core pressing piece 62A. Since the opening width between the two core pressing pieces 62B is small, it is difficult to come off the metal terminal 6.

  Between the pair of second pressing pieces 64 of the metal terminal 6, the external electrode 2B of the chip part 2 is attached by soldering. Therefore, even if the first core 4 and the second core 5 are pressed after the metal terminal 6 is mounted on a substrate or the like (not shown), the metal terminal 6, the first core 4 and the second core 5 are detached. Is suppressed. In addition, the metal frame terminal 3 is integrated with the first core 4 and the second core 5, but the metal terminal 6 is suppressed from coming off from the first core 4 and the second core 5. The chip component 2 provided between the metal terminal 6 and the metal terminal 6 is prevented from being detached from the metal frame terminal 3 or the metal terminal 6.

  The three-terminal filter according to the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made within the scope described in the claims. For example, in the embodiment, the flat plate portion holding piece connecting portion and the holding piece deviation preventing piece connecting portion, which are connecting portions between the flat plate portion and the core holding piece and between the core holding piece and the misalignment preventing piece, It is configured by bending a part of the metal plate that constitutes the flat plate portion, the core pressing piece, etc., and the displacement prevention flat plate portion connecting portion is joined by solder which is a joining member, but is not limited thereto. Moreover, you may connect only a flat plate part pressing piece connection part by joining with a joining member. Moreover, you may connect all the connection parts by joining.

  In the present embodiment, solder is used for joining, but not limited to this, welding or resin bonding may be used. Further, if solder is used, it is possible to perform soldering at the same time that the chip component 2 is attached to the metal frame terminal 3 or the metal terminal 6. Specifically, after applying cream solder to the joint between the misalignment prevention piece and the flat plate portion, the entire three-terminal filter 1 is heated to melt the solder, and then cooled to solidify. According to this method, when the metal terminal 6 is attached to the first core 4 and the second core 5, the misalignment prevention piece and the flat plate portion are not yet joined. The core 5 can be easily held. In addition, although the core is divided into two, the core is not limited to this, and may be an integral core as long as the core has a shape including a first leg and a second leg.

The top perspective view of the three terminal filter concerning an embodiment of the invention. The disassembled perspective view of the three-terminal filter which concerns on embodiment of this invention. Sectional drawing along the III-III line in FIG. Sectional drawing along the IV-IV line in FIG.

Explanation of symbols

1 .. Three-terminal filter 2 .. Chip part 2A ... External electrode 2B ... External electrode 3 ... Metal frame terminal 31 ... Chip part holding part 31A ... Joint part 31C ... First wall part 31C ... Two wall portions 31D ··· First pressing piece 32 · · First arm portion 32A · · First portion 32B · · Second portion 33 · · Second arm portion 32C · · Third portion 33A · · First portion 33B · · · 2 parts 33C ·· 3rd part 4 · · first core 41 · · first surface 42 · · second surface 43 · · third surface 44 · · fourth surface 45 · · fifth surface 45A · · first slope Surface 45B ·· First central surface 45C · · Second inclined surface 46 · · Sixth surface 46B · · First central surface 46A · · First inclined surface 46C · · Second inclined surface 47 · · Through hole 5 · · Second core 51 .. first surface 52 .. second surface 53 .. third surface 54 .. fourth surface 55 .. fifth surface 55 A ·· First inclined surface 55B ·· First central surface 55C ·· Second inclined surface 56 ·· Sixth surface 56A ·· First inclined surface 56B ·· First central surface 56C ·· Second inclined surface 57 · -Through hole 6-Metal terminal 61-Flat plate part 62-First terminal piece 62A-First core holding piece 62B-Second core holding piece 62C-First displacement prevention piece 62D- One position deviation prevention piece 62E ·· Solder 62F · · Solder 62a · · First flat plate portion holding piece connecting portion 62b · · Second flat plate portion holding piece connecting portion 62c · · First holding piece deviation preventing piece connecting portion 62d · · Second pressing piece displacement prevention piece connecting portion 63 ··· Second terminal piece portion 63A ··· Third core holding piece 63B · · Fourth core holding piece 63C · · Third positional deviation prevention piece 63D · · · Fourth positional deviation prevention Piece 63E ・ ・ Solder 63F ・ ・ Solder 63a ・ ・ Third plate Presser piece connecting portion 63b .. Fourth flat plate portion presser piece connecting portion 62c .. Third presser piece slip preventing piece connecting portion 62d .. Fourth presser piece slip preventing piece connecting portion 64 .. Second presser piece 7. Metal. Cover 71 ··· Plate member 72 · · First cover piece 72A · · First presser piece 72B · · Second presser piece 73 · · Second cover piece 73A · · Third presser piece 73B · · Fourth presser Fragment

Claims (8)

A chip portion having a pair of external electrodes;
A first core portion provided with a first leg portion; and a second core portion provided with a second leg portion provided in parallel with the first leg portion, wherein the first leg portion and the second leg portion are provided. A core that defines a space for accommodating the chip component between the leg portion;
A metal frame terminal joined to one external electrode of the chip component;
A three-terminal filter comprising a metal terminal joined to the other external electrode of the chip component,
The first core portion includes a first sandwiched surface that is provided on the first leg and extends in a direction from the first leg toward the second leg, and a second facing the first sandwiched surface. A sandwiched surface, a first space defining surface that is on a plane intersecting the first sandwiched surface and the second sandwiched surface and forms an inner wall of the space;
The metal terminal is provided on one side of each of the flat plate portion and both sides of the flat plate portion, forms an acute angle with the flat plate portion, and holds the first sandwiched surface and the second sandwiched surface, respectively. A pair of first core pressing pieces and second core pressing pieces, a first edge of the flat plate portion and a first edge of the first core pressing piece connected to the first space defining surface. A three-terminal filter, comprising: a misalignment prevention piece.   The metal terminal includes a first flat plate portion holding piece connecting portion that connects the first edge portion of the flat plate portion and the edge portion of the first core holding piece, the edge portion of the first core holding piece, and the first A first pressing piece displacement prevention piece coupling portion for coupling the edge portion of the displacement prevention piece, and a first displacement prevention piece for coupling the edge portion of the first displacement prevention piece and the first edge portion of the flat plate portion. A first flat plate portion holding piece connecting portion, the first holding piece displacement preventing piece connecting portion, and the first deviation preventing piece flat plate portion connecting portion are formed by bending or joining. The three-terminal filter according to claim 1. The first sandwiched surface and the second sandwiched surface extend in a direction in which the first leg portion and the second leg portion extend,
The metal terminal is provided with a second misalignment prevention piece that is connected to the second edge of the flat plate portion and the edge of the second core pressing piece and contacts the first space defining surface. The three-terminal filter according to claim 1, wherein the three-terminal filter is provided.   The metal terminal includes a second flat plate portion pressing piece connecting portion that connects the second edge portion of the flat plate portion and the edge portion of the second core pressing piece, an edge portion of the second core pressing piece, and the second A second pressing piece displacement prevention piece coupling portion for coupling the edge portion of the displacement prevention piece, and a second displacement prevention piece for coupling the edge portion of the second displacement prevention piece and the second edge portion of the flat plate portion. A flat plate portion connecting portion, and the second flat plate portion holding piece connecting portion, the second holding piece displacement preventing piece connecting portion, and the second deviation preventing piece flat plate portion connecting portion are configured by bending or joining. The three-terminal filter according to claim 3. The second core portion includes a third sandwiched surface provided on the second leg portion and extending in a direction from the second leg portion toward the first leg portion, and a fourth opposed to the third sandwiched surface. A sandwiched surface, a second space defining surface that is on a plane intersecting the third sandwiched surface and the fourth sandwiched surface, and forms an inner wall of the space;
The metal terminal is provided on the other side of each of the both sides, forms a sharp angle with the flat plate portion, and a pair of third core pressing pieces for holding the third sandwiched surface and the fourth sandwiched surface, respectively. And a fourth core pressing piece, and a third misalignment preventing piece connected to the third edge of the flat plate portion and the edge of the third core pressing piece and contacting the second space defining surface, The three-terminal filter according to claim 1, wherein the three-terminal filter is provided.   The metal terminal includes a third flat plate portion holding piece connecting portion that connects the third edge portion of the flat plate portion and the edge portion of the third core holding piece, an edge portion of the third core holding piece, and the third edge. A third pressing piece displacement prevention piece coupling portion for coupling the edge portion of the displacement prevention piece, and a third displacement prevention piece for coupling the edge portion of the third displacement prevention piece and the third edge portion of the flat plate portion. A third flat plate portion holding piece connecting portion, the third holding piece deviation preventing piece connecting portion, and the third deviation preventing piece flat plate portion connecting portion are formed by bending or joining. The three-terminal filter according to claim 5. The third sandwiched surface and the fourth sandwiched surface extend in a direction in which the first leg portion and the second leg portion extend,
The metal terminal is provided with a fourth misalignment prevention piece that is joined to the flat plate portion and the fourth core pressing piece so as to abut against the second space defining surface. The three-terminal filter according to any one of claims 1 to 6.   The metal terminal includes a fourth flat plate portion pressing piece connecting portion that connects a fourth edge portion of the flat plate portion and an edge portion of the fourth core pressing piece, an edge portion of the fourth core pressing piece, and the fourth A fourth holding piece displacement prevention piece coupling portion for coupling the edge portion of the misalignment prevention piece, and a fourth displacement prevention piece for coupling the edge portion of the fourth misalignment prevention piece and the fourth edge portion of the flat plate portion. A fourth flat plate portion pressing piece connecting portion, the fourth pressing piece deviation preventing piece connecting portion, and the fourth deviation preventing piece flat plate portion connecting portion are formed by bending or joining. The three-terminal filter according to claim 7.

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