JPS5951509A - Lead terminal of transformer - Google Patents

Abstract

PURPOSE:To improve a tensile strength of an external lead wire and also improve the appearance of the terminal connected part by a method whrein insulation members, each of which has a specified U-shape notch, an insertion groove and a housing part within its thickness, are mated to a housing part of the transformer bobbin. CONSTITUTION:A lead terminal 4 is composed of molded insulation material such as synthetic resin and a lead wire fixing U-shape notch which is composed of an insertion groove 22 in which a lead wire is inserted, a guide part 22a which keeps the U-bent form of the lead wire 18 and a guide hole 23 which holds the end of the lead wire 18 is provided within its thickness. A withdrawing groove 26 through which the end of the coil X of the other side is introduced is also provided to the molded insulation member. Connected part of the coil end X and the lead wire 18 is housed in a housing part 24. With this constitution, the coil end X and the lead wire 18 are soldered together via the lead terminal 4 and the connected part is housed in the housing part 24 and the lead terminal 4 is housed in a lead terminal housing part 5 so that the connecting parts of the coil ends X and Y and the lead wires 18 and 19 do not appear outside.

Description

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

Conventionally, various types of terminal boards have been widely provided to connect the lead storage of an external circuit to the coil end of a transformer.
f: It has an electrical relay terminal, and is used to solder the coil end and external lead wire to this terminal.

However, there is a drawback in that when a certain tensile force is applied to the external lead wire, the lead wire easily separates from the terminal. In addition, the terminals (connecting parts) are exposed, which not only spoils the appearance of the transformer, but also makes the connection work complicated and troublesome.

The present invention has been made in view of these conventional drawbacks, and an object of the present invention is to sufficiently increase the tensile strength of the external lead and improve the appearance of the terminal connection portion.

In order to achieve this objective, the present invention provides 91 points of the lead wire.
One part, a guide part that guides this lead to bend it into a U-shape, and a holding part that holds all the ends of the lead wire that passed through this kite part. The insulating member is made of an insulating member that has an accommodating part in its wall thickness for accommodating the connection part of the lead wire end (j + °1. and the - lead wire end and the coil end), and this insulating member is attached to the transformer bobbin. The structure is such that it can be inserted into a storage section provided therein.

EMBODIMENT OF THE INVENTION Below, the Example plan drawing of this invention is demonstrated concretely.

The outer bobbin (1) placed horizontally has an open bottom on the lower outer side, an appropriate number of lead wire pull-out grooves (2) on the outer surface, and a coil end on the inner surface. (X)
Lead terminal (4) with a pull-out groove f31-i
A storage part (5) is configured, and below the collar (1b) is a lead terminal α3) for an inner bobbin (7), which will be described later.
A flange (6) is provided on which the housing part (14) is placed.

Next, one end of the inner bobbin (7) is attached to the outer bobbin (1).
A flange (7a) to be inserted into the winding trunk (8) of 1 is made of・Wire drawing and shipping (1υ is provided, and a lead terminal (11 storage part (141) is provided, which has a coil β1 blank pull-out groove land on the inner surface.

In the figure, 01 is the winding drum of the inner bobbin (7), (1Q is the coil wound 7Σ on the outer bobbin (7Σ), and (171 is the A double 1 coil wound on the inner bobbin (7)).

The inner bobbin (7) is attached to the winding drum (8) of the above (1□l□f configuration, as shown in Figures 1 and 2, outer bobbin) (1).
Tsuba (7a),! '4.1111111ll((1!i
and the coil θ7) where the power is inserted.

Furthermore, (1) in the present invention, the respective coil ends (X
Lead terminals (4) and 01 are stored which hold the respective connection parts of 1 and (Y) and lead wires (field and 4) at intervals.

An example of the lead terminal (4) is shown in FIGS. 5 and 6.

To explain the details, the lead terminal (41, (
Reference numeral 11 is a molded product of an insulating material such as a molded product of synthetic resin or a processed product of Bakelite, and within the thickness of this insulating member, as shown in detail in Fig. 7, there is a lead wire (one peak or (1! J k Insertion i #j 4 for insertion from the side, and a guide part (22a) that holds the inserted lead wire in a bent state in the shape of the letter 1a, and this guide part (22
A U-shaped notch for attaching a lead wire is provided, which is made up of a guide hole 03) for holding the end of the lead wire passed through a). In addition, the coil end (X
) or (Y) is inserted into the pull-out groove, and the inserted coil end cap or ('/) and the lead wire (
The housing part e where the connecting part with the 1st or 4th part is constructed within the wall thickness.
It is designed to be accommodated in 4I. In addition, the above-mentioned housing part (
2→ and the pull-out groove tI are arranged symmetrically on both sides of the medium heat bulkhead of the insulating member, and the lead terminal storage "a"
ls(5) and (R8 in the figure) are of the size and shape stored in 14 are convex portions provided on both ends of the outer surface of the lead terminal (4) and Recesses e! provided at both ends of the outer surface of the storage part (5) and H!
This is to engage with the 4 lead terminal (4) and fix the 4 lead terminal (4).
) and (1:4) are protrusions provided on the outer surface of the central partition wall, and are through holes (adapted to 3υ) that are previously provided at the appropriate positions on the outer surface of the lead terminal storage areas (5) and (2). Again, this is for fixing the lead terminal (4) and 1→.

According to the above configuration, the outer bobbin (1) and the inner bobbin (7) have separate winding syllables, and the lead terminal (
4) and (13)' (Connect the coil end (X) and ty+ with the lead wire (18) and H through 5) and (141), and then insert and set the inner bobbin (7) into the outer bobbin (1), and as shown in the first figure, the core (if all 14 are installed, the whole will be integrated, and the coil end WB The connections between (X) and (1) and the lead wires (11 and (11) are also not exposed.

As explained above in IF 11111, according to the present invention, the lead terminal is formed of an insulating member, and the insertion groove for the coil end and the lead wire f are formed within the thickness of the insulating member.
, a guide hole for bending and holding the LJ-shape, a holding hole for the lead and the V end, and an accommodating part for accommodating the connecting end of the lead wire and the coil, and this insulating member is used to store the transformer bobbin. Since the terminal is constructed so that it can be inserted into the lead terminal, the tensile strength of the lead wire is improved and it is possible to reliably prevent the lead wire from coming off from the lead terminal.

Furthermore, by inserting one piece of the insulating member into the storage portion in item 1, it is possible to prevent the connection end in item 1 from being exposed outside the bobbin,
Therefore, the appearance as a transformer is extremely improved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an overall perspective view, FIG. 2 is a perspective view showing the assembly process, FIG. 3 is a perspective view of the entire area of FIG. 2, and FIG. Figure 4 is A in Figure 1.
-A sectional view, Figure 5 is a perspective view of the lead terminal, Figure 6 is a perspective view of Figure 5 viewed from the bottom, Figure 7 is a perspective view of the lead terminal.
It is a sectional view taken along the line BB in the figure. (1)...Outer bobbin, (4)(B)...Lead terminal, (7)...Inner bobbin, tll N...
Lead I hemp, (X) (Y)...Coil end, Co., Ltd.
..."41 people/1"'+'s (22a)...
Guide part, 23... Guide hole, 24... Accommodation part. Figure 4

Claims (1)

[Claims] A U-shaped notch for attaching the lead wire, which consists of an insertion part for the lead wire, a guide part that guides the lead wire to be bent into a U-shape, and a holding part for the end of the lead wire that passes through the guide part, and a coil. An accommodating part for accommodating the insertion groove at the end and the connection part between the lead wire end and the coil end; A lead terminal for a transformer that is designed to fit into the storage part of the bobbin.