JPS62150702A - High frequency coil - Google Patents

Abstract

PURPOSE:To enable easy installation of a plate terminal by making the terminal hole of a bobbin an arc shape and by making the interval corresponding to the thickness of the plate terminal greater than the thickness of the plate terminal. CONSTITUTION:A bobbin 1 is provided with plural terminal holes 4 which have an arc shape corresponding to the width (a) of a plate terminal 2 with a diameter (c) which is equal to or less than the width (a) and an interval (d) corresponding to the thickness (b) of the plate terminal greater than the thickness (b) and shorter than the side of the square inscribed in the above-mentioned arc shape. The terminal hole 4 is made nearly a circle in this way and the terminal part of the forming metal mold of the bobbin 1 can be made strong in strength. Since the interval (d) of the terminal hole 4 is also greater than the thickness (b) of the plate terminal 2, the positioning in the terminal hole 4 of the plate terminal 2 is not disturbed by a soldered region. This enables processing a recession and a projection in the direction of the thickness of the plate terminal 2.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to high frequency coils used for signal processing in television, video, communication equipment and the like.

2. Description of the Related Art Generally, in a 4+4 B high frequency coil in which a thin plate terminal is inserted into a thermoplastic resin bobbin and fixed, the thickness is 0.51111 or less and the width is 1.5 mm. A conventional example in which a flat plate terminal of On+n or less is inserted into the bobbin and fixed therein is shown in FIGS. 5 and 6. 11 is a thermoplastic resin bobbin, 12 is a flat terminal inserted into the bobbin 11,
13 is wound in the groove of the bobbin 11. Processing of the flat terminal 12 is also often difficult due to its small shape. Furthermore, it is often difficult to make the fitting hole into which the flat terminal 12 is pushed into a hole with a cross-sectional shape less than the same as that of the flat terminal due to the structure and strength α of the bobbin mold. For this reason, the cross-sectional shape of conventionally used terminals is often round, and flat terminals are rarely used.

The present invention solves this problem, and aims to provide a high frequency coil for mounting a bobbin in which a flat terminal can be easily implanted.

Means for solving the problem In order to solve this problem, the present invention provides a flat terminal with 47
The terminal hole of the bobbin installed in I is made into an arc shape with a diameter equal to or less than this 11'' in the part corresponding to the flat plate terminal I+1 direction, and the interval between the parts corresponding to the flat plate terminal 19 direction is set to this distance. It is more subtle and has an interval shorter than the length of one side of the square inscribed in the arc-shaped portion.

Effect With this configuration, even if a flat plate terminal with a rectangular H side is connected to an electronic component by attaching 't' m in advance and is later inserted and fixed into the terminal hole of the bobbin, it will only be half a meter long (the J part is a flat plate). Things that get in the way of positioning the terminals are <K<,
Assembling the device - Simplify the culm. However, since the terminal hole is nearly circular, the molded metal (one terminal part) of the bobbin can be made significantly stronger.

Example Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows a block diagram of a high frequency two-wheel bobbin according to an embodiment of the present invention. In FIG. 1, 1 is a bobbin made of thermoplastic resin, and a coil 3 is wound around this 8-wire coil iM 1 a. 2 is a flat terminal shown in FIG. 2, and has a width a of, for example, 1.0 ni or less and a thickness b of, for example, 0.511 n or less. Reference numeral 4 denotes a plurality of terminal holes provided in the bobbin 1 for implanting the flat plate terminals 2, and as shown in FIG. It is constructed in the shape of a circular arc with a diameter C that is equal to or smaller than the radius C, and the interval d between the portions corresponding to the thickness b direction is configured to be larger than the thickness b and shorter than the length of one side of the square inscribed in the arc-shaped portion. ing. Since the terminal hole 4 has a nearly circular shape in this way, the terminal portion of the mold for forming the bobbin 1 can be made stronger.・FIGS. 3 and 4 show a top view and a side view of the high-frequency coil in which parts are assembled in the bobbin, and the lead 15 of the coil 3 wound around the bobbin 1 is connected to one flat terminal 2, Further, a chip capacitor 6 is interposed between the flat terminal 2 and another flat terminal 2. At this time, before the flat terminal 2 is inserted into the terminal hole 4, the lead IQ5''t of the coil 3 is soldered in the thickness direction of the flat terminal 2, and then the flat terminal 2 is inserted into the terminal hole 4. Since the distance d is larger than the thickness b of the flat terminal 2, the soldering portion does not interfere with the positioning of the flat terminal 2 within the terminal hole 4.

Therefore, it is possible to form irregularities on the flat terminal 2 in the thickness direction.

According to the present invention, due to the shape of the terminal hole, it is possible to process unevenness in the thickness direction of the flat terminal before inserting the flat terminal into the terminal hole. In addition, since the terminal hole becomes nearly circular, the terminal part of the molding die can be made stronger.
In addition, since it is easy to process, the dimensional defects jα are improved. In addition, by making the flat terminal into a continuous comb terminal, productivity is improved, and the shape of the flat terminal can be made smaller, allowing the product to be made smaller.

[Brief explanation of drawings]

Figure 1 is a bobbin configuration diagram of a high-frequency coil according to an embodiment of the present invention, Figure 2 is an enlarged view of the terminal hole provided therein, and Figures 3 and 4 show the coil and capacitor assembled in the bobbin. Top view and side view of the high frequency coil, No. 5
FIG. J3J and FIG. 6 are a top view J3 and a side view of a conventional bobbin. 1... Bobbin, 2... Flat terminal, 3... Coil,
4...Terminal hole, 5...Coil lead wire, 6...
Chip Capacitor Agent Yoshihiro Morimoto Figure 1 Figure 3! Figure iFigure 6

Claims (1)

[Claims] 1. A high-frequency coil in which a plurality of flat terminal pins are implanted in a bobbin made of thermoplastic resin and has a groove for winding the coil, and the terminal holes in which the flat terminal pins are implanted are arranged in the width direction of the flat terminal. The corresponding part is made into an arc shape with a diameter equal to or less than this width, and the interval between the corresponding parts in the thickness direction of the flat terminal is larger than this thickness and shorter than the length of one side of the square inscribed in the arc-shaped part. high frequency coil.