JP2005311516A - Non-reciprocal circuit element, and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a non-reciprocal circuit element which can be reduced in thickness and has good workability, and a manufacturing method thereof. <P>SOLUTION: In this non-reciprocal circuit element, a box-like member 2 for accommodating a ferrite member 7 is formed of a second yoke 3 and an insulating resin body 5. A ground terminal 3e embedded in the resin body 5 has a coupling section 3c coupled to a bottom plate 3a and a bent tongue piece 3d extending along the external wall of the side wall 5b of the resin body 5. An L-shaped input/output terminal 4 embedded in the resin body 5 has a bottom 4a in the same plane state as the bottom plate 3a, and a bent side 4b extending along the external surface of the side wall 5b of the resin body 5. Thus, the bottom piece 4a of the input/output terminal 4 is in the same surface state as the bottom plate 3a of the second yoke 3, the thickness of the bottom wall of the box-like member 2 can be reduced, and a thin element can be obtained. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an irreversible circuit element including an isolator and a circulator applied to a transmission unit of a mobile communication device such as a mobile phone, and a manufacturing method thereof.

  FIG. 8 is an exploded perspective view according to a conventional non-reciprocal circuit element, and FIG. 9 is a cross-sectional view of a main part of a resin case according to the conventional non-reciprocal circuit element. FIG. 10 is an explanatory diagram showing a first step of a conventional non-reciprocal circuit device manufacturing method, FIG. 11 is an explanatory diagram showing a second step of a conventional non-reciprocal circuit device manufacturing method, and FIG. 12 is a conventional non-reciprocal circuit device. FIG. 13 is an explanatory diagram showing a fourth step of a conventional method for manufacturing a nonreciprocal circuit device.

  Next, the configuration of a conventional non-reciprocal circuit device will be described with reference to FIGS. 8 to 13. A magnet 52 is housed in a first yoke 51 made of a box-shaped magnetic plate (iron plate or the like). .

The box-shaped resin case 53 is formed by molding an insulating resin, and includes a bottom wall 53b having a through hole 53a and a side wall 53c extending upward from the periphery of the bottom 53b.
The U-shaped second yoke 54 made of a magnetic plate (iron plate or the like) has a bottom plate 54 a and a pair of side plates 54 b bent from the bottom plate. The second yoke 54 is embedded in the resin case 53. As a result, the bottom plate 54a is exposed below the through hole 53a, and the second yoke 54 is coupled to the first yoke 51 to form a magnetic closed circuit.

  A plurality of substantially U-shaped ground terminals 55 made of the same material as the second yoke 54 are embedded in and integrated with the resin case 53 in a state of being separated from the second yoke 54, and are formed on the bottom wall 53b. The exposed connecting portion 55 a and a bent tongue 55 b extending along the outer surface of the side wall 53 c of the resin case 53 are provided.

  A plurality of substantially U-shaped input / output terminals 56 made of the same material as that of the second yoke 54 are separated from the second yoke 54 and insulated from the second yoke 54 and embedded in the resin case 53 so as to be integrated. And has a connecting portion 56a exposed on the bottom wall 53b and a bent side piece 56b extending along the outer surface of the side wall 53c of the resin case 53.

  The chip-type capacitor 57 and the resistor 58 are placed on the bottom wall 53 b of the resin case 53 and connected to the connection portion 55 a of the ground terminal 55 and the connection portion 56 a of the input / output terminal 56.

  First, second, and third center conductors 60, 61, and 62 are wound and attached to the flat ferrite member 59, and the ferrite member 59 includes the first, second, and third center conductors. The ground portions (not shown) of the first, second, and third central conductors 60, 61, and 62 are in contact with the bottom plate 54a of the second yoke 54. Further, the port portions 60 a, 61 a, 62 a of the first, second, and third center conductors 60, 61, 62 are connected to the capacitor 57 and the resistor 58.

  When the magnet 52, the ferrite member 59, and the first, second, and third center conductors 60, 61, and 62 are sandwiched between the first yoke 51 and the resin case 53, a conventional nonreciprocal circuit is obtained. An element is formed.

  Next, a conventional non-reciprocal circuit device manufacturing method will be described with reference to FIGS. 10 to 13. First, as shown in FIG. 10, the hoop material 65 is punched into the hole 66 located in the center portion. The second yoke 54 connected by the connecting portion 68 is formed, and the strips 69 serving as the ground terminals 55 and the strips 70 serving as the plurality of input / output terminals 56 are formed on the outer periphery of the hole 66. Form.

  Next, as shown in FIG. 11, the side plate 54b bent from the bottom plate 54a is formed by bending, and then the strips 69 and 70 are bent into a substantially U shape by bending as shown in FIG. Thus, the front ends of the strips 69 and 70 are positioned in the vicinity of the bottom plate 54a.

  Next, as shown in FIG. 13, after forming the resin case 53 by molding, the connecting portion 58 and the strips 69 and 70 are cut at the position of the cutting line S1, and then the strips 69 and 70 are connected to the side walls. When bent along the line 54c, the resin case 53 as shown in FIG. 9 is manufactured, and the manufacture of the conventional non-reciprocal circuit device is completed. (For example, see Patent Document 1)

However, in the conventional non-reciprocal circuit element, the ground terminal 55 and the input / output terminal 56 are substantially U-shaped, the connection portions 55a and 56a are located on the bottom wall 53b of the resin case 53, and the second yoke 54, the bottom wall 53b of the resin case 53 is increased in thickness and cannot be reduced in thickness.
Further, since the ground terminal 55 is separated from the second yoke 54, not only the grounding property of the second yoke 54 is deteriorated but also the workability of the ground terminal 55 is deteriorated.

  Further, in the conventional method of manufacturing a non-reciprocal circuit element, since the ground terminal 55 is manufactured separately from the second yoke 54, not only the workability of the ground terminal 55 is deteriorated, but also the ground terminal 55 Since the connecting portions 55a and 56a of the input / output terminal 56 are located on the bottom wall 53b of the resin case 53 and are located away from the bottom plate 54a of the second yoke 54, the bottom of the resin case 53 Since the thickness of the wall 53b is increased, the thickness cannot be reduced.

JP 2001-24406 A

In the conventional non-reciprocal circuit element, the ground terminal 55 and the input / output terminal 56 are substantially U-shaped, the connecting portions 55 a and 56 a are located on the bottom wall 53 b of the resin case 53, and the second yoke 54 Since the position is away from the bottom plate 54a, there is a problem that the thickness of the bottom wall 53b of the resin case 53 is increased and the thickness cannot be reduced.
Further, since the ground terminal 55 is separated from the second yoke 54, there is a problem that not only the grounding property of the second yoke 54 is deteriorated but also the workability of the ground terminal 55 is deteriorated.

  Further, in the conventional method of manufacturing a non-reciprocal circuit element, since the ground terminal 55 is manufactured separately from the second yoke 54, not only the workability of the ground terminal 55 is deteriorated, but also the ground terminal 55 Since the connecting portions 55a and 56a of the input / output terminal 56 are located on the bottom wall 53b of the resin case 53 and are located away from the bottom plate 54a of the second yoke 54, the bottom of the resin case 53 There is a problem that the thickness of the wall 53b becomes large and the thickness cannot be reduced.

  Accordingly, an object of the present invention is to provide a non-reciprocal circuit device that can be thinned and has good processability, and a method for manufacturing the same.

  As a first means for solving the above problems, a first yoke having an upper plate, a second yoke having a flat bottom plate and constituting a magnetic closed circuit with the first yoke, , A magnet disposed on the upper plate side, a flat ferrite member disposed on the bottom plate side, and disposed between the magnet and the ferrite member, and partly in the vertical direction via a dielectric. First, second, and third center conductors arranged to cross, an input / output terminal integrally formed with the second yoke by an insulating resin body, and a ground terminal; A box-shaped member for housing the ferrite member is formed by the yoke 2 and the insulating resin body, and the ground terminal embedded in the insulating resin body includes a connecting portion connected to the bottom plate, and the insulating member. A bent tongue extending along the outer surface of the side wall of the resin body The L-shaped input / output terminal embedded in the insulating resin body has a bottom piece that is flush with the bottom plate and a bent side piece that extends along the outer surface of the side wall of the insulating resin body. The configuration was as follows.

As a second solution, the bottom wall of the box-shaped member is composed of the bottom plate of the second yoke, the bottom piece of the input / output terminal, and the bottom of the insulating resin body, and the box-shaped member The thickness of the bottom wall was set to the thickness of the bottom plate of the second yoke.
As a third solving means, an inclined portion is provided on a side surface of the bottom piece of the input / output terminal, and the inclined portion is filled with the bottom portion of the insulating resin body.

Further, as a fourth solution, a configuration is provided in which a wide portion wider than the bent side piece is provided at the tip of the input / output terminal.
As a fifth solution, the first, second, and third central conductors include a port portion located on one end side and a ground portion located on the other end side, and at least the first and first center conductors. Each of the port portions of the second central conductor is connected to the bent side piece of the input / output terminal.

  Further, as a sixth solving means, the nonreciprocal circuit element according to claim 1 is provided, and the box-shaped member is formed by punching and bending a hoop material, and the second yoke having the bottom plate and the side plate. The ground terminal connected to the bottom plate, and the input / output terminal in a state of being separated from the second yoke, the insulating resin body is formed by molding, and the second yoke and The input / output terminal is integrated with the insulating resin body.

As a seventh solution, the bottom wall of the box-shaped member is composed of the bottom plate of the second yoke, the bottom piece of the input / output terminal, and the bottom of the insulating resin body, and the box-shaped member The thickness of the bottom wall of the manufacturing method was the same as the thickness of the bottom plate of the second yoke.
As an eighth solving means, a side surface of the bottom piece of the input / output terminal is provided with an inclined portion by crushing, and the inclined portion is filled with the bottom portion of the insulating resin body.

The non-reciprocal circuit device of the present invention includes a first yoke having an upper plate, a second bottom plate having a flat bottom plate, and forming a magnetic closed circuit with the first yoke, and disposed on the upper plate side. The first magnet is disposed between the magnet, the flat ferrite member disposed on the bottom plate side, the magnet and the ferrite member, and partly intersects in the vertical direction via the dielectric. , Second and third center conductors, an input / output terminal integrally formed with the second yoke by an insulating resin body, and a ground terminal, and the ferrite member is formed by the second yoke and the insulating resin body. A box-shaped member for storage is formed, and the ground terminal embedded in the insulating resin body has a connecting portion connected to the bottom plate, and a bent tongue extending along the outer surface of the side wall of the insulating resin body, The L-shaped input / output terminal embedded in the insulating resin body is the bottom that is flush with the bottom plate. If, it has a structure having a bent side pieces extending along the outer surface of the side wall of the insulating resin material.
That is, since the bottom piece of the L-shaped input / output terminal embedded in the insulating resin body is flush with the bottom plate of the second yoke, the thickness of the bottom wall of the box-shaped member can be reduced. can get.
Further, since the ground terminal is connected to the bottom plate of the second yoke, not only the grounding of the second yoke is ensured but also the workability of the ground terminal can be improved.

  The bottom wall of the box-shaped member is composed of the bottom plate of the second yoke, the bottom piece of the input / output terminal, and the bottom of the insulating resin body. The thickness of the bottom wall of the box-shaped member is the bottom plate of the second yoke. Therefore, the thickness of the bottom wall of the box-shaped member can be remarkably reduced, and a thin one can be obtained.

  In addition, the side of the bottom piece of the input / output terminal is provided with an inclined portion, and the inclined portion is filled with the bottom of the insulating resin body, so that the input / output terminal is securely embedded and the input / output terminal is firmly attached. Can be obtained.

  In addition, since the wide end portion wider than the bent side piece is provided at the front end portion of the input / output terminal, a harder one with the input / output terminal attached can be obtained.

  The first, second, and third center conductors each have a port portion located on one end side and a ground portion located on the other end side, and each of the port portions of at least the first and second center conductors. However, since it is connected to the bent side piece of the input / output terminal, it is easy to connect the port portion to an external device.

  The non-reciprocal circuit device according to claim 1, wherein the box-shaped member is formed by punching and bending a hoop material, a second yoke having a bottom plate and a side plate, a ground terminal connected to the bottom plate, and a second member After the input / output terminal is formed in a state separated from the yoke, the insulating resin body is formed by molding, and the second yoke and the input / output terminal are integrated by the insulating resin body. Since it is connected to the bottom plate of the second yoke, not only the grounding of the second yoke is ensured but also the workability of the ground terminal can be improved.

  The bottom wall of the box-shaped member is composed of the bottom plate of the second yoke, the bottom piece of the input / output terminal, and the bottom of the insulating resin body. The thickness of the bottom wall of the box-shaped member is the bottom plate of the second yoke. Therefore, the thickness of the bottom wall of the box-shaped member can be remarkably reduced, and a thin one can be obtained.

  In addition, the side surface of the bottom piece of the input / output terminal is provided with an inclined portion by crushing processing, and since this inclined portion is filled with the bottom portion of the insulating resin body, the input / output terminal is reliably embedded, A strong installation can be obtained.

  The drawings of the non-reciprocal circuit device of the present invention and the manufacturing method thereof will be described. FIG. 1 is a cross-sectional view of the main part of the non-reciprocal circuit device of the present invention, and FIG. 3 is an enlarged cross-sectional view of a main part of an input / output terminal according to the non-reciprocal circuit element of the present invention, FIG. 4 is a plan view of a block body according to the non-reciprocal circuit element of the present invention, and FIG. 6 is an exploded perspective view of a magnet and a block body according to the non-reciprocal circuit device of the present invention, FIG. 6 is an explanatory view showing a first step according to the method for manufacturing the non-reciprocal circuit device of the present invention, and FIG. It is explanatory drawing which shows the 2nd process which concerns on the manufacturing method of an element.

  Next, the configuration of the non-reciprocal circuit device of the present invention will be described with reference to FIGS. 1 to 7. The first yoke 1 made of a magnetic plate (iron plate or the like) has a box shape or a U shape, and is a square. An upper plate 1a having a shape and a side plate 1b bent downward from a side of the upper plate 1a are provided.

  The box-shaped member 2 formed by the molding process includes a U-shaped second yoke 3 made of a magnetic plate (iron plate or the like), and an input / output formed in an insulated state separated from the second yoke 3. The terminal 4 and the insulating resin body 5 that couples the input / output terminal 4 and the second yoke 3 are configured.

  The second yoke 3 includes a flat bottom plate 3a, a side plate 3b bent upward from the bottom plate 3a, and a bent tongue piece 3d connected to the bottom plate 3a by a connecting portion 3c and bent upward. The input / output terminal 4 includes a ground piece 3e, a bottom piece 4a flush with the bottom plate 3a, a bent side piece 4b bent upward from the bottom piece 4a, and a tip of the bottom piece 4a. And a wide portion 4c wider than the bent side piece 4b, and an inclined portion 4d provided on the side surface of the bottom piece 4a by crushing and having a lower width on the lower surface side. The terminal 4 is integrated by an insulating resin body 5.

  The insulating resin body 5 has a bottom plate 3a and a bottom portion 5a that is flush with the bottom piece 4a, and a side wall 5b extending upward from the bottom portion 5a. The bent tongue piece 3d and the bent side piece 4b are While extending upward along the outer surface of the side wall 5b, the inclined portion 4d of the input / output terminal 4 is filled with the bottom portion 5a of the insulating resin body 5 to prevent downward slipping.

  The bottom wall of the box-shaped member 2 includes a bottom plate 3a, a bottom piece 4a, and a bottom portion 5a. The thickness of the bottom wall of the box-shaped member 2 is equal to the thickness of the bottom plate 3a of the second yoke 3. At the same time, the second yoke 3 of the box-shaped member 2 is coupled to the first yoke 1, and as a result, a magnetic closed circuit is formed by the first and second yokes 1, 3.

The ground plate 6 made of a metal material has a flat plate portion 6a and a plurality of bent pieces 6b bent upward from the flat plate portion, and the ground plate 6 is located in the box-shaped member 2, The flat plate portion 6a is placed on the bottom plate 3a.
A plate-like ferrite member 7 made of YIG (Yttrium iron garnet) or the like is placed on the flat plate portion 6 a of the ground plate 6 in a state of being located in the box-shaped member 2.

  The block body 8 that is flat and has a substrate shape has a dielectric 9 and first, second, and third central conductors 10 and 11 with the dielectric 94 partially crossed in the vertical direction. 12 and the dielectric 9 and the first, second and third central conductors 10, 11 and 12 are integrated into one block to form a block body 9.

  For example, the block body 8 includes the first, second, and third central conductors 10, 11, 12 on the lower surface of the dielectric material 9, in the stack of the dielectric materials 9, and on the upper surface of the dielectric material 9. The dielectric 9 and the first and first layers are formed on the upper surface of an insulating substrate (not shown) made of a thin film technology or thick film technology such as printing or coating, or made of low temperature fired ceramic (LTCC) or resin. The second and third central conductors 10, 11, and 12 are formed by a thin film technique such as vapor deposition or sputtering, or a thick film technique such as printing or coating.

  The first, second, and third center conductors 10, 11, and 12 include port portions 10a, 11a, and 12a located on one end side, ground portions 10b, 11b, and 12b located on the other end side, and a port. Each of the parts 10 a, 11 a, and 12 a is connected to each other and has a lead-out part 13 provided on the lower surface from the side surface of the dielectric 9.

  The third central conductor 12 is exposed on the upper surface of the dielectric 9 (block body 8), and the dielectric 9 is connected to the ground portion 10b of the first, second, and third central conductors 10, 11, and 12. 11b and 12b are provided with through holes (through holes) 9a, and the block body 8 having such a configuration is placed on the ferrite member 7 and is not shown here. The 10b, 11b, and 12b sides are connected to the ground plate 6 and are grounded.

  The plurality of chip type capacitors C includes a dielectric substrate 14 and first and second electrodes 15 a and 15 b provided on the upper and lower surfaces of the dielectric substrate 14. It arrange | positions between the piece 6b and the ferrite member 7, the 1st electrode 15a is connected to the extraction | drawer part 13, and the 2nd electrode 15b is connected to the bending piece 6b, and is earth | grounded.

  Although not shown here, on the port portion 12a side of the third central conductor 12, a capacitor C is connected to the circulator, and a capacitor C and a resistor (not shown) are connected to the isolator. One electrode of the device is grounded, and at least the port portions 10a and 11a of the first and second center conductors 10 and 11 are attached to the bent side piece 4b of the input / output terminal 4 with solder 19 Connected by.

On the upper surface of the block 8 (dielectric 9), a resist layer 16 such as a solder resist made of an insulating resin is formed in a state where the third central conductor 12 is avoided.
The resist layer 16 is thicker than the third central conductor 12, and the first and second resist bodies 16a and 16b formed opposite to each other with the third central conductor 12 therebetween. The first and second resist bodies 16a and 16b have reservoirs 16c and 16d made of concave portions.

  The magnet 17 is bonded to the block body 8 and the third central conductor 12 by an adhesive 18 with the lower surface placed on the upper surface of the resist layer 16 (first and second resist bodies 16a and 16b). Has been.

As shown in FIG. 5, the magnet 17 is attached by applying an adhesive 18 to the central portions of the reservoirs 16c and 16d including the third central conductor 12, and in this state, the block body 8 and the magnet In a state where 17 is positioned by the jig, the magnet 17 is pressed onto the block body 8 by the jig, and the magnet 17 is bonded.
At this time, the adhesive 18 is pushed and spread by the magnet 17, but the peripheral portions of the recessed portions 16 c and 16 d serve to prevent the adhesive 18 from flowing out, and the adhesive 18 to the outside of the lower surface of the magnet 17 is used. Is prevented from leaking.

  The nonreciprocal circuit device of the present invention includes a ground plate 6 positioned on the bottom plate 3a, a ferrite member 7 positioned on the ground plate 6, a block body 8 positioned on the ferrite member 7, and the block body 8 The upper magnet 17 is sandwiched between the upper plate 1a of the first yoke 1 and the bottom plate 3a of the second yoke 3 to form an isolator or circulator which is a nonreciprocal circuit device of the present invention. Has been.

  In the nonreciprocal circuit device of the present invention having such a configuration, the bottom wall of the box-shaped member 2 is placed on a circuit board (not shown) of an electronic device, and the ground terminal 3e and the input / output terminal 4 are circuit boards. It is soldered to a wiring pattern (not shown) provided on the surface and surface-mounted.

  Next, the manufacturing method of the non-reciprocal circuit device according to the present invention will be described with reference to FIGS. 6 and 7. First, as shown in FIG. 6, the hoop material 20 is punched and the second located at the center portion. The yoke 3, the plurality of ground terminals 3 e, the band-like pieces 21 that are located on both sides of the second yoke 3 and serve as the input / output terminals 4, and the connecting portion 22 that connects the hoop material 20 and the second yoke 3 are formed. .

  Next, as shown in FIG. 7, the side plate 3 b and the ground terminal 3 e that are bent from the bottom plate 3 a are formed by cutting and bending, and the band-shaped piece 21 is bent into a substantially U-shape. It forms so that a front-end | tip part may be located in the vicinity of the baseplate 3a.

  Next, although not shown here, after the insulating resin body 5 is formed by molding to form the box-shaped member 2, the input / output terminals 4 and the connecting portions 21 are cut along the outside of the box-shaped member 2. Then, when the box-shaped member 2 is separated from the hoop material 20, the production of the nonreciprocal circuit device of the present invention is completed.

The principal part sectional drawing of the nonreciprocal circuit device of this invention. The expanded sectional view of the principal part of the ground terminal which concerns on the nonreciprocal circuit device of this invention. The expanded sectional view of the principal part of the input-output terminal which concerns on the nonreciprocal circuit device of this invention. The top view of the block body which concerns on the nonreciprocal circuit device of this invention. The disassembled perspective view of the magnet and block body which concern on the nonreciprocal circuit element of this invention. Explanatory drawing which shows the 1st process which concerns on the manufacturing method of the nonreciprocal circuit element of this invention. Explanatory drawing which shows the 2nd process which concerns on the manufacturing method of the nonreciprocal circuit element of this invention. The disassembled perspective view which concerns on the conventional nonreciprocal circuit element. Sectional drawing of the principal part of the resin case which concerns on the conventional nonreciprocal circuit element. Explanatory drawing which shows the 1st process of the manufacturing method of the conventional nonreciprocal circuit element. Explanatory drawing which shows the 2nd process of the manufacturing method of the conventional nonreciprocal circuit element. Explanatory drawing which shows the 3rd process of the manufacturing method of the conventional nonreciprocal circuit element. Explanatory drawing which shows the 4th process of the manufacturing method of the conventional nonreciprocal circuit element.

Explanation of symbols

1: 1st yoke 1a: Upper plate 1b: Side plate 2: Box-shaped member 3: 2nd yoke 3a: Bottom plate 3b: Side plate 3c: Connection part 3d: Bending tongue piece 3e: Grounding terminal 4: Input / output terminal 4a : Bottom piece 4b: Bending side piece 4c: Wide portion 4d: Inclined portion 5: Insulating resin body 5a: Bottom portion 5b: Side wall 6: Ground plate 6a: Flat plate portion 6b: Bending piece 7: Ferrite member 8: Block body 9: Dielectric 9a: Through hole 10: First central conductor 10a: Port portion 10b: Ground portion 11: Second central conductor 11a: Port portion 11b: Ground portion 12: Third central conductor 12a: Port portion 12b: Ground Part 13: Leading part C: Capacitor 14: Dielectric substrate 15a: First electrode 15b: Second electrode 16: Resist layer 16a: First resist body 16b: Second resist body 16c, 16d: Reservoir 17: magnet 18: Adhesive 19: Solder 20: Hoop material 21: Strip piece 22: Connection part

Claims (8)

A first yoke having an upper plate, a second yoke having a flat bottom plate and constituting a magnetic closed circuit with the first yoke, a magnet disposed on the upper plate side, and the bottom plate A flat ferrite member disposed on the side, and the first, second, and second members disposed between the magnet and the ferrite member and partially intersecting in the vertical direction via a dielectric. A third central conductor, an input / output terminal integrally formed with the second yoke by an insulating resin body, and a ground terminal; and the ferrite member is formed by the second yoke and the insulating resin body. A box-shaped member for housing is formed, and the ground terminal embedded in the insulating resin body includes a connecting portion connected to the bottom plate, and a bent tongue piece extending along an outer surface of the side wall of the insulating resin body L-shaped insertion embedded in the insulating resin body Power terminal, non-reciprocal circuit element characterized by having a bottom piece which is in the bottom plate and flush with the bent side pieces extending along the outer surface of the side wall of the insulating resin material. The bottom wall of the box-shaped member is composed of the bottom plate of the second yoke, the bottom piece of the input / output terminal, and the bottom of the insulating resin body, and the thickness of the bottom wall of the box-shaped member is The nonreciprocal circuit device according to claim 1, wherein the thickness of the bottom plate of the second yoke is set. 3. The nonreciprocal circuit device according to claim 2, wherein an inclined portion is provided on a side surface of the bottom piece of the input / output terminal, and the inclined portion is filled with the bottom portion of the insulating resin body. 5. The nonreciprocal circuit device according to claim 4, wherein a wide portion wider than the bent side piece is provided at a tip portion of the input / output terminal. The first, second and third center conductors have a port portion located on one end side and a ground portion located on the other end side, and at least the port portions of the first and second center conductors. 5. The nonreciprocal circuit device according to claim 2, wherein each of the nonreciprocal circuit devices is connected to the bent side piece of the input / output terminal. 2. The nonreciprocal circuit element according to claim 1, wherein the box-shaped member is formed by punching and bending a hoop material, the second yoke having the bottom plate and the side plate, and the ground terminal connected to the bottom plate. And after the input / output terminal is formed in a state of being separated from the second yoke, the insulating resin body is formed by molding, and the second yoke and the input / output terminal are connected to the insulating resin body. A method for producing a non-reciprocal circuit device, wherein the non-reciprocal circuit device is integrated. The bottom wall of the box-shaped member is composed of the bottom plate of the second yoke, the bottom piece of the input / output terminal, and the bottom of the insulating resin body, and the thickness of the bottom wall of the box-shaped member is The method of manufacturing a nonreciprocal circuit device according to claim 6, wherein the thickness of the bottom plate of the second yoke is set. 8. The nonreciprocal circuit device according to claim 7, wherein a side surface of the bottom piece of the input / output terminal is provided with an inclined portion by crushing, and the inclined portion is filled with the bottom portion of the insulating resin body. Manufacturing method.

Images