JPH0766898B2 - Composite type circuit component - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a capacitor used in a television, a VTR, and the like,
The present invention relates to a composite type circuit component having an inductor and the like.

(Prior Art) As a conventional composite type circuit component including a capacitor and an inductor, there is one shown in FIGS. 4 (a) and 4 (b).

The composite type circuit component 1 shown in FIGS. 1A and 1B has an inductor 5 formed by winding a winding around a drum-shaped core on both ends of a conductive plate 6 having a substantially downwardly oriented "E" shape. , 5 and one end of the chip capacitor 8 at the center are respectively connected and mounted, while the other ends of the inductors 5 and 5 and the other end of the chip capacitor 8 are coupled pieces 7L, 7R and 7M, respectively.
It is placed on one end of and connected electrically, and the connecting pieces 7L, 7
Lead wires 3a, 3b, 3c are placed on the other ends of R, 7H and are electrically connected by soldering. Reference numeral 15 in the figure denotes a molding material that covers and includes the connection ends of the lead wires.

In the composite type circuit component as described above, the pusher 2 provided in the automatic insertion machine (not shown) presses the upper portion of the conductive plate 6 in the direction of the arrow A to insert each lead wire into another circuit board. Will be connected. The pusher 2 is composed of a metallic cylindrical case 2a and a rubber material 2b filled inside the cylindrical case 2a.

(Problems to be Solved by the Invention) However, in the composite circuit component having the above-described configuration, the central portion of the conductive plate 6 formed flat is pressed by the pusher 2 and each lead wire is pressed by this pressing force. 3a to 3c
Is inserted into another circuit board, the lower end of the metal cylindrical case 2a shown in the drawing comes into contact with the surface of the mold 15 and is pressed by this portion. Further, the contact portion of the conductive plate 6 with the pusher 2 is the end portion of the thin plate material though the molding material is interposed. Therefore, the pressing force of the pusher 2 causes the conductive plate 6 to bend, which results in peeling at the connecting portion of the capacitor that is conductively connected.

However, in this case, the cylindrical case 2a of the pusher 2 damages the surface of the molding material 15, or results in unfavorable quality such as cracking or peeling, and peeling of the capacitor due to bending of the conductive plate results in electrical connection. It caused problems such as defects or damage.

Therefore, an object of the present invention is to provide a composite type circuit component that solves the above problems.

[Structure of the Invention] (Means for Solving the Problems) A structure of the present invention for achieving the above-mentioned object is a conductive structure in which inductor mounting portions to which part of inductors are respectively mounted and connected are formed on both wing portions. A plate, a first intermediate coupling piece arranged at a predetermined distance to both wing portions of the conductive plate, and a second intermediate coupling piece arranged at a predetermined distance to a central portion of the conductive plate. Intermediate coupling pieces, an inductor connected between the wing portions and the first intermediate coupling piece, a chip capacitor connected between the conductive plate and the second intermediate coupling piece, and conduction between the intermediate coupling pieces. In a composite type circuit component comprising lead wires that are connected in parallel and project from each other, the central portion of the conductive plate is projectingly formed at the upper end portion facing the chip capacitor mounting portion, and is erected at the leading end. Of the lead wire It is characterized by coating the entirety by molding material leaving Extension end.

(Operation) The function of the present invention having the above-described structure is that the protruding piece is provided at the upper end of the central portion of the conductive plate. Therefore, when pressed by the pusher provided in the automatic insertion machine, the inside of the pusher mainly constitutes the pusher. Since the rubber material presses the molding material portion covering the rising pieces, it is possible to prevent the surface of the molding material from being scratched, cracked, peeled or the like.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a composite circuit component.

In the figure, the composite circuit component 20 includes a conductive plate 21 in which inductor mounting portions 31L and 31R are formed on both wings 21L and 21R, respectively.
And inductor mounting portions 32L, 32R are formed at the opposite ends of the inductor mounting portions 31L, 31R at a predetermined distance from each other, and a lead wire coupling portion 33 is formed at the other end.
Second intermediary connecting pieces 22, 24 of which one end is arranged to face the central portion of the conductive plate 21 and a lead wire connecting portion 33 is formed at the other end.
Intermediate connecting piece 23 of the first intermediate connecting piece 22, 24
And the second intermediate coupling piece 23, the standing piece at each of the adjacent opposing ends.
34 to 36 are formed, and inductors 25 and 26 formed by winding windings around drum-shaped cores mounted between the inductor mounting portions 31L, 32L and 31R, 32R facing each other, and the center of the conductive plate 21. Part and the one end of the second intermediate coupling piece 23, and the chip capacitors 27 mounted thereon, and the lead wires 28 to 30 connected to the lead wire coupling portions 33 of the first and second intermediate coupling pieces.
It is configured to have and. Reference numeral 55 in the drawing is a molding material that covers the whole including the connecting end portion of the lead wire.

2 (a) is an explanatory view showing the composite circuit component 20 shown in FIG. 1 with the chip capacitors 27, the inductors 25, 26, the molding material 55, and the lead wires 28 to 30 omitted, FIG. 2 (b). ，
(C) and (d) are respectively BB 'end view, CC' end view, and EE 'sectional view.

In FIG. 3A, inductor mounting portions 31L and 31R each having a substantially downward "E" shape are formed on both sides 21L and 21R of the conductive plate 21 on the lower end 37 side.

The flange portions 25a and 26a of the drum-shaped cores (inductors) 25 and 26 are placed on the inductor placement portions 31L and 31R, respectively. The flange portions 25a and 26a themselves are the inductor placement portions. Of the three projecting pieces 38 to 40, the projecting piece 39 located at the center is bent in the direction perpendicular to the paper surface, and is supported by the remaining projecting pieces 38 and 40. Further, the projecting piece 39 bent at a substantially right angle is brought into contact with the end surface of the drum-shaped core to be placed, and is electrically connected later by solder or the like. In this embodiment, the inductor mounting portions formed on the first intermediate coupling pieces 22 and 24 have the same structure.

At the center of the conductive plate 21, three cutouts 41L, 41M, 41R are formed. As shown in the figure, the conductive plate 21 is formed symmetrically with respect to the plane of the drawing with the notch 41M as the center.
Square notches 41L and 41R are formed at positions equidistant from the circular notches 41M on the left and right sides of the drawing. The chip capacitor 27 is placed between the cutouts 41L and 41R.

In addition, the lower side 37 of the central portion where these three notches are formed
An upright piece 42 having an upright portion 42a bent substantially at a right angle to the front side of the paper surface, that is, the surface side on which the chip capacitor is placed is formed at the upper end opposite to the above, protruding upward.

The standing piece 42 is formed so as to project from the upper end of the conductive plate 21 by a predetermined distance. The width of the pusher 2 is made slightly smaller than the inner diameter of the cylindrical case 2a. If the predetermined distance is a value that takes into consideration the wear of the rubber material 2b with which it abuts over time, there is no problem in using it. Furthermore, the standing portion of the standing piece 42 (hereinafter referred to as the tip bending piece)
42a (see FIG. 2 (d)) is shown as being substantially perpendicular to the plane including the lead wires 28 to 30, but the invention is not limited to this, and other angles may be used.

Further, as shown in FIG. 3D, the standing piece 42 protects the end portion of the chip capacitor 27 which is placed close thereto, and improves the mechanical strength of the conductive plate itself.

By the way, the inductor mounting portions 31L and 31R formed on both the wing portions 21L and 21R of the conductive plate 21 face the inductor mounting portions 32L and 32R having the same structure, respectively, and the first intermediate coupling piece 22. , 24 are arranged.

A holding piece 43 for holding the lead wires 28, 30 having flat connecting ends is formed at approximately the center of each of the first intermediate coupling pieces 22, 24. The holding piece 43 is a coupling piece member 22a,
The connecting end of the lead wire inserted between 24a and this holding piece 43 is held by the elastic force of the holding piece 43. The holding piece and the connecting piece member form a lead wire connecting portion.

Similarly, a second intermediate coupling piece 23 is formed at the center of the conductive plate 21.
Are spaced apart from each other and arranged correspondingly.

The second intermediate coupling piece 23 has a chip capacitor mounting portion 44 formed at one end facing the conductive plate 21 and the lead wire coupling portion 33 described above at the other end.

The chip capacitor placing section 44 is a chip capacitor 27.
Upright piece formed to approximately match the width (direction perpendicular to the long axis)
44L and 44R are formed, and a rectangular notch 45 is formed in the center. This cutout portion 45 is provided when the chip capacitor 27 is placed as shown in FIG.
It is formed so as to be located near one end (lower end in the figure) of the long axis.

As described above, the standing pieces 34 are provided at the opposite ends of the first and second intermediate coupling pieces 22, 24 and 23 described above.
35L, 35R, 36 are provided.

The standing pieces 34, 35L, 35R, 36 are formed in the vicinity of the connection ends of the respective intermediate coupling pieces with the lead wires, and the illustrated embodiment is the front side of the drawing, that is, the surface on which the chip capacitor 27 is placed. It is formed by bending it to the side (see (b) of the same figure).

The operation and effect of the composite circuit component having the above configuration will be described with reference to FIGS. 5 (a) and 5 (b).

When the composite type circuit component 20 as shown in FIG. 1 is completed, it is set in an automatic inserter (not shown) and another circuit board is set.
The lead wires 28 to 30 corresponding to the lead wire insertion holes 59a to 59c formed in the hole 59 are inserted. In addition, 58,5 in the figure
Reference numeral 8 is a chuck that holds the lead wire until the lead wire is inserted into the insertion holes 59a to 59c.

In this case, since the conductive plate 51 has the rising piece 42 protruding from the upper end of the central portion, the rubber material 2b of the pusher 2 can be formed by the rising piece 42.
The upper molding material will be pressed. Therefore, when mounting the composite circuit component on another circuit board 59, the cylindrical case 2a
It can be inserted and placed in a state in which it does not contact the molding material 55. Therefore, the cylindrical case 2a of the pusher 2 which has been conventionally generated can prevent the surface of the molding material 55 from being scratched, cracked, peeled or the like. Further, since the mechanical strength can be improved by forming the upright pieces 42, it is possible to solve the problem of defective electrical connection or damage due to peeling of the capacitor due to bending of the conductive plate.
Further, even when the pusher 2 presses the rising piece 42, the tip bending piece 42a does not directly apply a force to the chip capacitor. Further, the area of the tip bending portion 42a and the opposing end of the chip capacitor is increased,
Can improve soldering strength, while standing piece
It is also possible to improve the mechanical strength by thickly adhering the molding material to 42.

Next, regarding the manufacturing method of the composite type circuit component described above,
A description will be given with reference to FIGS.

The conductive plate 21 and the first intermediate coupling pieces 22, 24 shown in FIG.
The second intermediate coupling piece 23 is formed at regular intervals by pressing a metal belt (also referred to as a lead frame) 49 made of, for example, an aluminum alloy or copper as shown in FIG. 3 (a). I am trying to let you. More specifically, sprocket holes 48 are formed in the metal belt at regular intervals, and the metal belt is intermittently conveyed in the direction of arrow D through the sprocket holes 48. As indicated by the arrow 46, the conductive plate, the first intermediate coupling piece, the second intermediate piece
Then, press working is applied to a shape including a portion to be an intermediate coupling piece and a portion to be an upright piece. Then, at the next predetermined position, as shown by the arrow 47, the standing pieces 42, 44L, 44R, 39,
34, 35L, 35R, 36 and the holding pieces 43 are bent and formed.

The inductor is mounted on the inductor mounting portion formed as described above. Then apply cream solder,
Solder.

After applying the cream solder to the position where the chip capacitor is soldered, the chip capacitor 27 is mounted over the second intermediate coupling piece 23 and the conductive plate 21. At this time, the standing piece 42 formed on the conductive plate 21 functions as a positioning member for the chip capacitor 27.

As above, inductors 25 and 26, chip capacitor 2
If 7 is mounted and connected, lead frame 49 and conductive plate,
Cut the part that should become the first and second intermediate joining pieces.

The round lead wires 28 to 30, whose one end is flattened as shown in FIG. 3B, are inserted into the lead wire coupling portions 33 described above. At this time, the plurality of round lead wires are fixed to a transfer belt 50 made of, for example, paper at a predetermined interval M as shown in FIG. 3B and are intermittently transferred by the sprocket holes 51. The predetermined interval M is an interval corresponding to each of the lead wire coupling portions 33 here.

The composite type circuit component (shown in FIG. 7C) assembled as described above is coated with, for example, a synthetic resin or the like.

The composite circuit component is completed by the above steps.

The present invention is not limited to the illustrated embodiments, and various modifications can be made within the scope of the invention.

The composite type circuit component described above is shown as an example in which a winding is wound around a drum type core as an inductor, but the present invention is not limited to this, and the inductor mounting portion is formed so that a round lead wire can be held. Also, the present invention can be applied to a composite type circuit component including an inductor configured by inserting a bead core into the held circular lead wire.

[Effects of the Invention] As described in detail above, according to the present invention, by forming the upright pieces, the formation of scratches, cracks, peeling, etc. on the surface of the molding material by the pusher is prevented, and the mechanical strength of the conductive plate is improved. It is possible to provide a pattern circuit component in the case where the improved strength does not cause a defective electrical connection or damage.

[Brief description of drawings]

FIG. 1 is a plan view of a composite type circuit component according to an embodiment of the present invention, and FIG. 2 (a) is an explanatory view showing the composite type circuit component shown in FIG. 1 with an inductor, a chip capacitor and lead wires omitted. 2 (b) and 2 (c) are BB ′ end views and CC ′ end views shown in FIG. 2 (a), and FIG. 2 (d) is EE shown in FIG. 2 (a). ′ A cross-sectional view, FIG. 3 (a) is an explanatory view of the lead frame for a composite circuit component shown in FIG. 1, FIGS. 4 (b) to (d) are explanatory views of a manufacturing process, and FIG. 4 (a),
(B) is an explanatory view of a conventional composite circuit component, FIG. 5 (a),
(B) is explanatory drawing at the time of inserting and mounting a composite type circuit component on another circuit board, the same figure (a) is a top view and the same figure (b).
Is a sectional view taken along the line EE '. 21 …… conductive plate, 22,24 …… first intermediate coupling piece, 23 …… second intermediate coupling piece, 25,26 …… inductor, 27 …… chip capacitor, 28,29,30 …… lead wire , 31L, 31R, 32L, 321R …… Inductor mounting part, 33 …… Lead wire coupling part, 42 …… Standing piece, 42a …… Standing part.

Claims (2)

[Claims] 1. A conductive plate having an inductor mounting portion on which a part of an inductor is mounted and connected to both wing portions, and a conductive plate disposed at a predetermined interval from both wing portions of the conductive plate. An intermediate coupling piece, a second intermediate coupling piece arranged at a predetermined distance from a central portion of the conductive plate, and an inductor connected between the wing portions and the first intermediate coupling piece. A composite circuit component comprising: a chip capacitor connected between the conductive plate and a second intermediate coupling piece; and lead wires protruding in parallel with each other and conductively connected to the respective intermediate coupling pieces, The conductive plate is provided with an upright piece projecting at the upper end opposite to the chip capacitor mounting part and having an upright end at the tip, and the entire lead wire is covered with a molding material except the protruding end. Composite type circuit parts characterized by 2. The composite circuit component according to claim 1, wherein the upright piece is bent toward the mounting surface side of the capacitor.