JPH04130705A - Apparatus for transformer - Google Patents

Abstract

PURPOSE:To make it possible to secure spaces between wiring foils on a printed- circuit board, by so widening the spaces between pins of a transformer that the pins provided on a circle are bent in outside directions every other pin and the pins are positioned zigzag on two concentric circles. CONSTITUTION:In a main body 1 of a transformer, No 1, NO 2, No 3, No 4 denote pins of the transformer respectively. The pins No 2, No 4, which are provided on a circle, are so bent in outside directions that they are positioned on an outside concentric circle, and the spaces of the pins are widened. Thereby, even when the spaces of the pins are made narrow owing to reducing the size of the transformer as a parts, the pins, which are provided on the circle, are so bent in outside directions every other pin, that the bent pins are positioned on the outside concentric circle. Thus, the dimensions of the spaces between the pins are changed, and the dealing with this problem is made possible. Therefore, by widening the spaces between the pins without increasing the size of the transformer, the spaces between the wiring foils on a print-circuit board can be widened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a transformer pin that increases the spacing between seedlings and improves reliability when a transformer is attached to a printed wiring board and soldered.

Conventional technology transformers were attached to printed wiring boards and soldered, but in order to ensure the reliability of soldering, all transformer pin insertion areas had to be grommets, which required a large area. In order to secure the space between the wiring foils on the printed circuit board,
Adjacent foil was partially cut and used.

Problems to be Solved by the Invention However, as parts become smaller and the pitch between pins narrows,
Along with this, the pitch between wiring foils on the printed circuit board also becomes narrower. Since the grommets are inserted into the pin insertion portions at such narrow pitches, it is difficult to secure a space between the wiring foils on the printed circuit board.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a transformer pin that can secure the distance between wiring foils on a printed circuit board.

Means for Solving the Problems In order to achieve the above object, the method of opening and widening the transformer pins of the present invention, in a transformer having a plurality of pins, bends only an even number of pins protruding from a concentric circle outward to form a staggered pattern between the pins. It expands the

Operation By using the method of opening and expanding the transformer pins described above, it is possible to reduce the size of the transformer parts and to cope with the narrowing of the distance between the pins by bending the even number of pins protruding from the concentric circles outward and changing the dimensions.

EXAMPLE A method of opening and expanding a transformer pin according to the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing the arrangement of the transformer main body and pins in a method of opening and expanding the pins of a circular transformer.

In FIG. 1, 1 is the transformer body, No. 1. N.

2, No, 3. Nα4 indicates the pin of the transformer. As is clear from FIG. 1, No. 2. No.4 pin is
The pins protruding from the concentric circles are bent outward to widen the space between the pins.

Figure 2 is a side view of a circular transformer with Nα2. The pins numbered 4 are bent to the outside of the circle in an L shape to widen the distance between the pins.

FIG. 3 is a plan view illustrating the arrangement of the transformer body and pins by widening the distance between the pins of the rectangular transformer.

In FIG. 3, 1 is the transformer body, No. 1. No,
2Nα3. N(L4.NO,5NO,6,N117
NCL8 indicates the pin of the transformer. As is clear from FIG. 3, NO, 2Nα4. No, 6. For the Nα8 pins, the pins protruding from the same straight line are bent outward to widen the distance between the pins.

Figure 4 is a side view of a rectangular transformer, No. 2 No.
Nos. 4, 6, No. 8 are bent outward in an L shape to widen the distance between the pins.

Effects of the Invention According to the present invention, without increasing the dimensions of the transformer, by simply bending the even numbered pins protruding from the concentric circles to the outside,
By increasing the distance between the pins, the distance between the wiring foils on the printed circuit board can be increased.

It is a side view of a spin.

Name of agent: Patent attorney Akira Okaji Haga 2 Foam Layer Diagram/-) 7th Kikyu Not, ~aZ5~a3. Nty#, Ncrl,
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Claims (1)

[Claims] In a transformer having a plurality of connection pins arranged concentrically or in parallel straight lines, the plurality of pins are arranged in a staggered manner by bending the spacing pins of the pins arranged concentrically or in a straight line outward. A transformer device featuring: