JPS5951508A - Terminal board of transformer - Google Patents

Abstract

PURPOSE:To make connection of coil ends to terminals simpler and surer by providing specified bent fixing terminal pieces and mating terminal pieces and arranging them into one continuous body by insulation members. CONSTITUTION:Terminal boards (c), (c1) are formed by an insulation member to have a height mating to upper and lower flanges 7, 8 of an outside coil bobbin (b) and at four corners mating pieces 15 which reach bent pieces 4 of an inside coil bobbin (a) are provided and each mating piece 15 has a mating projection 16 which fits to a mating hole at its tip. Plural lead wire inserting holes 17 and bent lead wire fixing pieces 18 are arranged in parallel on top, bottom and outside surfaces of the terminal boards (c), (c1) vertically facing each other. The bobbins (a), (b) and the terminal boards (c), (c1) are connected to compose one body and an end of the inside coil, which is drawn out through a notch 3 of the bobbin (a), is stranded and soldered around a bare wire part projected under the lead wire inserting hole 17 through a projected piece 10 of the bobbin (b) and the bent fixing pieces 18 of the terminal boards (c), (c1). The end of the outside coil, which is drawn out through a notch 11 of the bobbin (b) is also connected to the lead wire 19 in the same way.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a terminal plate for a transformer used to connect a coil end of a transformer to an external lead wire.

A variety of terminal plates are widely available for connecting external circuit leads to the coil ends of conventional transformers. This terminal board has a terminal that electrically relays the coil end and the external lead wire, and by soldering the coil end and the external lead wire to this terminal,
The two are electrically and pattern-wise connected.

However, there was a drawback in that the glue-lead wire could be separated and separated from the terminal very easily through such a terminal board. In addition, the terminal connection portions are exposed, which spoils the appearance of the transformer, and each connection end bends freely, making connection work cumbersome.

The present invention was made in view of these conventional drawbacks.
The overall purpose is to simply and reliably hold an external lead wire so that it will not easily separate from the coil end even if a tensile force is applied to the lead wire.

In order to achieve this object, the present invention provides a plurality of lead wire insertion holes provided at appropriate intervals on the outer surface, and a lead wire inserted in the upper or lower surface in a direction substantially perpendicular to the lead wire insertion holes. a bending fixing piece that guides the lead wire so that it is bent in the same direction as the lead wire insertion hole, and also pinches the lead wire between the transformer bobbin and the transformer bobbin when it is attached to the transformer bobbin, and further bends the lead wire in the same direction as the lead wire insertion hole; , a retaining piece having a locking protrusion for locking to the transformer bobbin and the IJ-wire insertion hole are provided to face each other, and the lead wire end inserted through the lead wire insertion hole projects outward. It has a structure in which these are integrally molded with an insulating member.

Embodiments of the present invention will be specifically described below with reference to the drawings.

In the illustrated embodiment, an example of a transformer with concentrically wound coils is shown.

That is, it is composed of an inner coil bobbin (a), an outer coil bobbin (b), a terminal plate (C,), and a cover (d) for a connection part used as necessary.

First, regarding the inner coil bobbin (a), the inner coil bobbin (a) is composed of an upper and lower row (]-) (2) and a winding body part 4, and one tsuba, that is, a lower tsuba (2).
is slightly smaller than the upper flange (1) and is configured to be fitted into the winding body (9) of the outer coil bobbin (1), which will be described later. A suitable number of notches (3) are provided for drawing out the coil ends. Furthermore, bent pieces (4) are provided at the four corners of the upper surface at appropriate intervals from the upper surface, and the bent pieces Ii' (
4) are each provided with a locking hole (5). In the figure (()) are standing walls that stand up on both sides of the core fitting part.

Next, regarding the outer coil bobbin (1)), the outer coil bobbin (1)) is composed of upper and lower rows (7) (81 and a perforated body part (9)), and the inner coil bobbin (a) has a notch (3). ) A suitable number of protrusions (Lf) are provided at appropriate intervals on the upper surface of the upper flange (7) facing the upper flange (7).

In addition, it is preferable that the protruding piece (ol * as shown in the figure - 仝+Ai ) is bent outward.Furthermore, the coil end should be pulled out from the lower flange (8) which is erroneously opposed to the protruding piece α0. An appropriate number of uJ included (Ll) are provided for this purpose, and bent pieces (4) and locking holes (5) similar to those described above are provided at the four corners of the lower surface of the outer coil bobbin (1). ing.

In addition, the above protrusion of the upper tsuba (7) (the upper tsuba (7) on the opposite side of the river)
) is provided with an appropriate number of notches (I and upright walls (+). Furthermore, the lower tsuba (8) inside the winding body (9)
A receiving plate (14) on which the lower collar (2) of the inner coil bobbin (a) is placed is provided on the measuring side.

Next, regarding the terminal plates (C) and (C,), the terminal plates (C) and (CI) have the same configuration, respectively, and the upper and lower rows f7) and (8) of the outer coil bobby y (1)l
The insulating member is molded to a height that engages with the insulating member.

These terminal plates (C) and (C,) have inner coil bobbins (bent pieces of aluminum) attached to the four corners, respectively.
4) An engaging piece (In) that reaches the housing is provided. This retaining piece (1 o'clock tip (C is provided with a locking protrusion (1) that engages with the locking hole (5) .

Furthermore, the lower and outer surfaces of the terminal board (C1, (C,) are designated as lead 11 shims t'rB. In other words, (17) is 1111. and (I8) is 1111. This is a bending and fixing piece for the lead wire, and multiple sets of these are installed side by side, facing each other vertically. 3%: Figure 3 shows the full details, and the lead wire insertion hole (+71 if, one end of each opening is The plastic coated lead wire (constructed with approximately the same diameter as 11,
Each opening is configured to have a small diameter so as to have the diameter of the exposed bare wire that has been peeled off by the plastic Ctfk, and the entire opening has a substantially truncated conical shape.

The above bent fixing piece (11) and the above lead wire insertion hole (1?1)
There is a lead wire receiving part 4 with a curved lower part so that the lead wire (1→) which is in an upright state can be bent and locked when inserted into the lead wire receiving part (21). The IJ wire is bent in a direction perpendicular to the lead wire insertion hole (1"7.

According to this configuration, the inner coil υ is wound around the inner 1 μm one coil bobbin (al), and the inner coil bobbin (a
) The end of the inner coil eυ and other lead wires (24) are pulled out as shown in FIG. The outer coil/window end and other lead wires C=I) are pulled out from the circle, and the inner coil bobbin (a) is fitted into the outer coil bobbin (b). ) for each lead insertion hole (
A lead wire (19) is inserted through each of the lead wires (17), and the bent portions are bent and fixed to the receiving end of the bent fixing piece α→ in a bent manner.

Further, each end, the daughter plate (C), '' (C1) is set on the outer coil bobbin (b) as shown by the arrow in FIG. 3, as shown in FIGS. 1 and 2. As a result, Hoai piece (
The locking protrusions (11) engage with the locking holes (5) of the inner coil bobbin (a), and the inner coil bobbin (a), the outer coil bobbin (b) and the terminal plates (C) and (C,) are connected to each other. For this reason, the fixed piece (lead wire 9 guided by 11) is erected between the fixed piece (11 and the protruding piece (10) of the outer coil bobbin (b)).
It becomes.

Next, the end of the inner coil pulled out from the notch (3) of the inner coil bobbin (a) and other lead wires, a
f: The lead wire insertion hole (l) is inserted between the protruding pieces (10) of the outer coil bobbin (1) and between the bent fixing pieces (L8) of the terminal plate (C) and (1). All you have to do is twist it in the urine area and wax it.

The end of the outer coil drawn out from the outer coil bobby 7 (+) (1υ) and other lead wires Ea
Similarly to t, it is sufficient to connect the lead wire (1→).

In the case of the embodiment shown in the drawings, a raised portion (2Q) is formed in the medium heat portion of the terminal board (C) (CI).

The raised portion (21 is the lead wire (11) is inserted into the lead wire insertion hole (1).
7), it naturally causes the exposed portion 3 to protrude outward, and the above-mentioned coil ends and other lead wires Ha
(It facilitates the twisting with 2=I and also allows the terminal board (C1 (the twisted portion at a point away from Cθ to be imprinted with hot solder)).

Then, the wax +1 barbed connection part has a lead wire insertion hole (1η
All you have to do is store it close to the camera and cover it with the cover (d) if you feel safe.

As explained in detail above, according to the present invention, the lead wire can be easily removed, and the attachment is made firm at the two lead wire holding bends, so that the lead wire can be pulled It has the advantage that it does not easily peel off from the coil end connection part even if force is applied, and furthermore, the connection work with the coil end can be performed easily and reliably.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially nested side view of a transformer, Fig. 2 is a vertical sectional view of the main part of a transformer, and Fig. The figure is an exploded view. Shout: protrusion, (17): lead wire insertion, 11n hole,
(1→...Screaming fixing piece, (19)...Lead wire, (c)...Protuberance, (al...Inner coil bobbin, (b)...Outer coil hobbin, ( C) (Cθ...
・Terminal board. -1■--l

Claims (1)

[Claims] A plurality of lead wire insertion holes are provided at appropriate intervals on the outer surface, and a lead wire is guided on the upper or lower surface so as to be bent in a direction substantially perpendicular to the lead wire insertion holes, a bending fixing piece that pinches a lead wire between the transformer bobbin and the lead wire when the transformer is installed on the transformer hoin, and further bends the lead wire in the same direction as the lead wire insertion hole;
a retaining piece having a locking protrusion that locks onto the transformer bobbin;
A terminal board for a transformer, comprising a protrusion provided opposite to the lead wire insertion hole and guiding the end of the lead wire inserted through the lead wire insertion hole so as to project outward.