JPS6223063Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an inductance element using a pot-shaped magnetic core, and particularly relates to an inductance element in which a small pot-shaped magnetic core is combined with a flexible terminal plate.

Conventionally, this type of inductance element is
A coil is provided in one set of pot-shaped magnetic cores, and one of them
A common structure was to attach a set of pot-shaped magnetic cores to a board using a fastening fitting that tightened them together. By the way, when using a small or ultra-small pot-shaped magnetic core, the manufacturing and mounting of the clamping fittings tends to be troublesome, and the treatment of the winding ends of the coil in the pot-shaped magnetic core also becomes a problem. It's coming.

This invention was made in view of the above points,
A flexible terminal plate that fits into the pot-shaped magnetic core is used to process the ends of the coil windings and attach the pot-shaped magnetic core to the board, making connection wiring work easier and improving the ease of mounting on the board. The present invention aims to provide an improved inductance element.

Embodiments of the inductance element according to the present invention will be described below with reference to the drawings.

1 and 2, a pair of pot-shaped magnetic cores 1A and 1B each have a structure in which a central columnar part 2 and an outer peripheral part 3 are connected by a flat plate part 4, and a winding end 6 of a coil 5 is connected to the outer peripheral part 3. It has a notch 7 for pulling out. The flexible terminal board 10 has conductive patterns 11 for mounting such as copper foil for fixing the pot-shaped magnetic core formed on both sides of an insulating yet flexible heat-resistant resin plate, etc., and the remaining side. A terminal conductive pattern 12 for fixing the winding end 6 of the coil 5 is formed at the middle of the edge. Further, the flexible terminal plate 10 is formed with punch holes 13 and 14 into which the central columnar part 2 and the outer peripheral part 3 of the pot-shaped magnetic core 1B are fitted, respectively.
Then, the flexible terminal plate 10 is fitted onto the pot-shaped magnetic core 1B, the coil 5 is further provided on top of the flexible terminal plate 10, and the two pot-shaped magnetic cores 1A and 1B are joined and integrated using adhesive or the like.
Furthermore, the winding end 6 is connected and fixed to the terminal conductive pattern 12 by soldering.

The inductance element shown in the above embodiment is attached to a printed circuit board as shown in FIG. That is, both side edges of the flexible terminal plate 10 are pressed against the conductive pattern 21 on the printed circuit board 20 using elasticity, and in this state, the mounting conductive pattern 11 and the board-side conductive pattern 21 are soldered. Thereby, the pot-shaped magnetic cores 1A, 1B can be easily fixed onto the printed circuit board without using any mounting fittings or the like. The printed circuit board 20 also has the advantage of not requiring special holes or grooves for mounting.

Although the above-mentioned embodiment shows a pot-shaped magnetic core with a cylindrical outer shape, the present invention can also be applied to a pot-shaped magnetic core with a rectangular outer shape or the like. Further, it is clear that the position and number of terminal conductive patterns 12 can be changed as appropriate depending on the number of winding ends drawn out from the coil, etc. In particular, by appropriately setting the number and arrangement of conductive patterns for terminals, there is an advantage that it can be applied to devices that require intermediate taps, and devices that require high voltage and large current.

As described above, according to the present invention, a pot-shaped magnetic core is assembled with a flexible terminal plate on which a terminal conductive pattern for fixing the coil winding end and a mounting conductive pattern for fixing the pot-shaped magnetic core are formed. By combining
It is possible to obtain an inductance element that facilitates processing of coil winding ends and wiring work, and that can be easily mounted on a substrate.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of an inductance element according to the present invention, FIG. 2 is a front sectional view thereof, and FIG. 3 is a side sectional view showing a state in which the inductance element shown in the embodiment is mounted on a printed circuit board. 1A, 1B... Pot-shaped magnetic core, 2... Central columnar part, 3... Outer periphery, 4... Flat plate part, 5... Coil, 6... Winding end, 10... Flexible terminal plate, 11
... Conductive pattern for mounting, 12 ... Conductive pattern for terminal, 13, 14 ... Punch hole, 20 ... Printed circuit board, 21 ... Conductive pattern.

Claims (1)

[Scope of utility model registration request] a pot-shaped magnetic core in which a central columnar part and an outer peripheral part are connected by a flat plate part; and a substantially rectangular flexible terminal plate having a punched hole into which the central columnar part and the outer peripheral part fit and which is fitted into the pot-shaped magnetic core. , a coil provided on the pot-shaped magnetic core, and the terminal plate includes a terminal conductive pattern that fixes the winding end of the coil, and a terminal conductive pattern separate from the terminal conductive pattern on both parallel sides of the terminal plate. An inductance element characterized by having a conductive pattern for attachment for fixing a pot-shaped magnetic core.