JPS5821141Y2 - toroidal transformer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a small toroidal transformer, and aims to provide a transformer that is easy to assemble.

What is shown in FIGS. 1 and 2 shows a conventional toroidal transformer.

The one shown in Figure 1 is a ring core 2 with a winding 3 on a board 1.
Place the transformed transformer body, insert the screw 4 into the center hole, and connect it to the insulating plate 5!・The transformer body is attached to the board 1 by 6.

This transformer requires screws 4, insulating plates 5, and nuts 6 for installation, resulting in high costs and poor installation workability.Therefore, as shown in Figure 2, an adhesive 7 is used to attach the transformer body to terminals. I thought about gluing it to board 8, but
It takes time for the adhesive 7 to dry, and after long-term use, the glued portion may become weak and the transformer body may come off.

Therefore, the present invention aims to provide a toroidal transformer that is easy to assemble, has a good mounting condition, and is inexpensive.One embodiment of the present invention will be described below with reference to the drawings.

The feature of the present invention is that, as shown in FIGS. 3 to 5, a plurality of presser tabs 10a, 10b, IO
This is because C was provided.

The terminal plate 9 and the presser tongue pieces 10a to 10C are made of thermoplastic resin by integral molding.

Terminals 11a, 11b, and IIC are embedded in the terminal plate 9 so as to protrude downward.

The presser tongue piece is made up of two or more pieces and is used to fix the core 12 by coming into contact with the inner wall of the ring-shaped core 12.To prevent removal, the key parts 13a and 13b face outward.

13C is provided at its tip.

Furthermore, support tongues 14 a , 14 b , and 14 C for elastically supporting the core 12 from below are provided on the terminal plate 9 .

The ring-shaped core 12 is toroidally wound with primary, secondary, and tertiary windings 15, 16, and 17 in advance.

When the presser tongues 10a to 10C are inserted into the center hole of the core 12 and pushed in, the presser tongues 10a to 10C are pushed inward and then return to their original positions to fix the core 12.

At this time, the presser tongue pieces 10a to 10C are connected to the windings 15 and 1.
6, between 16 and 17, and between 17 and 15.

That is, when the windings 15, 16.17 are inserted separately, the windings 15, 16.17 are attached to the presser tongue piece 10a.
Insulated at ~10C.

Therefore, the number of tongues may be provided in accordance with the number of windings.

Windings 15, 16, 17 are wired to terminals 11a-11C.

Of course, even a choke transformer with only one winding can be fixed by inserting a tongue piece between the windings.

As described above, according to the present invention, the core can be attached to the terminal board without using special attachment tools such as screws or nuts, and the assembly can be easily performed.

Furthermore, the mounting means can be inexpensive if it is integrally molded on the terminal board.

Furthermore, the core does not fall off even after long-term use, making it extremely practical.

[Brief explanation of drawings]

1 and 2 are respectively sectional front views of a conventional toroidal transformer, FIG. 3 is a perspective view of a toroidal transformer according to an embodiment of the present invention, and FIG. 4 is a sectional front view of the same transformer,
FIG. 5 is a perspective view of a portion of the transformer. 9...Terminal board, 10a, 10b, 10
C... Presser tongue piece, 11a, 11b,
11 C...--One terminal, 12... Core, 1
3a. 13b, 13C...Key part, 14a, 14b, 1
4C...Support tongue piece, 15, 16.17...
...Winding wire.

Claims (1)

[Scope of utility model registration request] A plurality of presser tabs each having an outwardly protruding key portion formed on the top thereof are integrally molded on the upper surface of the terminal board to which the downwardly protruding terminal is attached, and the tips thereof are bent diagonally upward on the upper surface of the terminal board. A support tongue piece is provided, and the presser tongue piece is housed along the inner wall of the center hole provided in a ring-shaped core with a winding wire wound in a toroidal shape, and the upper surface of the core is held with the key part of the presser tongue piece. A toroidal transformer that supports the lower surface of the core with the support tongue.