JPS62122109A - Continuous bobbin - Google Patents

Abstract

PURPOSE:To facilitate automatic winding and mounting while miniaturizing a continuous bobbin and reducing cost thereof by directly fitting terminal pins to each of collars for the bobbin. CONSTITUTION:Four collars 2 for a continuous bobbin 1 each have one terminal pin 4. These terminal pins 4 are fed by a continuous lead frame 3. That is, the lead frame 3 forming the metallic terminal pins 4 having a desired shape through etching, punching, etc. is molded through injection, transfer, compression or the like, and the terminals 4 are separated, thus acquiring the continuous bobbin 1 with the pins. It is desirable that the terminal pin 4 sections in molded shapes take structure resisting a slip-off, etc.-for example, proper angles are formed to sections in the molded shapes of the terminal pins 4 and sections projected to the outside of the molded shapes. The terminal pins 4 are fitted so that the sections projected to the outsides of the molded shapes of the terminal pins 4 are positioned on the extension of one sides of the collars for the bobbin, thus easily mounting the continuous bobbin 1 to the surface of the substrate 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a continuous bobbin used for a delay line or the like, and more particularly to a continuous bobbin having a terminal pin on a part or all of the base of the continuous bobbin.

[Technical background of the invention and problems thereof] As shown in FIG. 5, the continuous bobbin 10 itself, which has been conventionally used for delay lines, does not have a terminal pin, and the winding Later taps had to rely on artificial means such as twisting, and mounting on the board was not easy. Against this.

The continuous bobbin 10 shown in FIG. 6 has a terminal plate 11 at one end thereof.
is attached, making it easy to mount on a board. However, as the number of bobbins increases, the height also increases, and the increased number of terminals increases the mounting area.

[Object of the Invention] The present invention has been made in view of the above-mentioned conventional difficulties, and it is an object of the present invention to provide a continuous bobbin that is automatic, easy to wind, easy to install, small in size, and low in cost.

[Summary of the Invention] In order to achieve such an object, according to the present invention, in a continuous bobbin having a plurality of collars, a part or all of the plurality of collars each have one or more terminal pins. .

[Embodiments of the invention] Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a continuous bobbin 1 according to a first embodiment of the invention, in which the continuous bobbin 1 has one terminal pin 4 on each of its four flanges 2. FIG.

These terminal pins 4 are provided by a continuous lead frame 3. That is, a lead frame 3 is injected into which metal terminal pins 4 of a desired shape are formed by etching, punching, or the like.

After molding with a transfer or combustion gun, the terminal pins 4 are separated to obtain a continuous bobbin 1 with a pin according to the present invention.

Here, the terminal pin 4 part inside the mold body is
It is desirable to have a structure that is resistant to removal, etc., for example, the second
As shown in the cross-sectional view, the portion of the terminal pin 4 inside the mold body and the portion protruding outside the mold body are made to have an appropriate angle. Furthermore, by providing the terminal pin 4 so that the part of the terminal pin 4 that protrudes outside the molded body or the extension of one side of the brim of the bobbin, surface mounting of the continuous bobbin l onto the exposed plate l becomes easy. .

The material of the molded body is preferably an insulating material such as a resin, a magnetic material, or a mixture of a magnetic material and a resin.

FIG. 3 shows a second embodiment of the present invention, in which four terminal pins 4 are located on the same extension of the collar of the bobbin, and adjacent terminal pins 4 face oppositely to each other. It is arranged like this.

With such a configuration, it is easy to connect the lead wires to the terminal pins even when the pitch is dense, and when mounting the continuous bobbin, the continuous bobbin 1 is attached to the predetermined dimension 66 provided in advance on the horizontal bobbin 5. ! ! ! - By fitting it in, it is possible to easily position it, and furthermore, the thickness after mounting can be reduced.

FIG. 4(a) shows a third embodiment of the present invention, in which a step 4' is provided at the tip of the terminal pin 4, thereby reducing the number of lead wires to be twisted. Also, the twisted lead wires are prevented from shifting. Furthermore, since the wire is in a fixed position, soldering is ensured.

Further, as shown in FIG. 4(b), after winding the lead wire around the bobbin part of the continuous bobbin 1, there is a groove for winding the lead wire into the next bobbin part without getting the lead wire tangled around the terminal pin 4. 12 may be provided on a part of the brim. In this case, the operation for winding the lead wire into the next bobbin becomes easier.
Moreover, since the lead wire does not appear on the outer surface of the continuous bobbin, it is convenient for mounting.

The continuous bobbin of the present invention can be used as a delay line by winding a lead wire around a terminal pin to provide a tap and combining it with a capacitor.

Such a delay line can improve group delay characteristics by changing the number of taps.

[Effects of the Invention] As is clear from the above embodiments, the continuous bobbin of the present invention has a terminal pin attached directly to each of the flanges of the bobbin, so it can be used for both surface mounting and insertion, and is miniaturized. Since it is possible to manufacture and wind the wire easily, it is possible to reduce the cost by 1 or more.

[Brief explanation of drawings]

1 and 2 are respectively a perspective view and a sectional view of a continuous bobbin according to a first embodiment of the present invention, and FIGS. 3(a) and 3(b) are plan views of a continuous bobbin according to a second embodiment of the present invention, respectively. FIG. 4(a) is a plan view of a terminal pin of a continuous bobbin according to a third embodiment of the present invention, and FIG. 4(b) is a perspective view of a continuous bobbin according to another embodiment of the present invention. 5 and 6 are perspective views of conventional continuous bobbins. l... Continuous bobbin 2... Collar 3... Lead frame 4... Terminal pin 4'... Step part 5...・Board 6... Hole 12... Groove G3 Potato 3 Diagram

Claims (1)

Claims: 1. A continuous bobbin having a plurality of brim, characterized in that a part or all of the plurality of brim each has one or more terminal pins. 2. The continuous bobbin according to claim 1, wherein the terminal pin is provided on an extension of one side of the continuous bobbin. 3. The continuous bobbin according to claim 1 or 2, wherein at least one of the terminal pins is provided in a direction opposite to the other terminal pins. 4. Any one of claims 1 to 3 is characterized in that a groove is provided in a part of the collar for winding the lead wire into the next bobbin portion without getting it entangled with the terminal pin. 1
Continuous bobbin as described in section.