JPS59101810A - Treating structure of coil terminal - Google Patents

Abstract

PURPOSE:To strengthen a connecting section by forming a hole in the depth direction to the circumferential wall of a case, one surface thereof is opened, and a slit, with which a coil encasing section is communicated, and inserting a lead wire into the slit while enclosing fillers when the terminal of a coil encased in the case is drawn out. CONSTITUTION:The circumferential wall 1a of a case 1 is thickened, the two holes 2 are formed to the wall in the boom direction from the opening side, and the slits 1b are formed between the holes 2 and the inside of the case 1 and communicated with the inside. A ring-shaped core and the coil 4 wound on the core are encased in the case 1, and the lead wire 5 is inserted into the holes 2 while their noses 5a are held by the slits 1b. When the size of the holes 2 is determined so that the lead wire 5 is pushed strongly into the holes 2 at that time, the lead wire 5 need not be supported when enclosing fillers, the terminal of the coil is not disconnected even when the lead wire is pulled by mistake, and reliability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for processing coil terminals when a small current transformer, a transformer, or the like having a wound coil is housed in a case. − For large zero-phase current transformers used in earth leakage circuit breakers, the coil must be sufficiently balanced and shielded, so the terminals of the coil must also be adequately treated; In zero-phase current transformers and ordinary small transformers that do not require consideration of these factors, the coiled core is simply stored in a case, and the case is sealed with a filler such as synthetic resin. . If this coil is thin, it is led out by connecting the Hiji wire to the end of the coil, but until it is filled with filler, the connection between the end of the coil and the Hiji wire is free and there is no tension. The disadvantages are that the strength is weak and the position of this connection part is not constant when filling with filler, making it difficult to automate the process of enclosing the wound coil inside the case. Moreover, even those that are encapsulated with a filler have the disadvantage that the coil ends are weak against tension.

The present invention has been made in consideration of the above-mentioned points, and an object of the present invention is to provide a coil terminal processing structure that makes the connection between the coil terminal of a small device and the Hijiden line strong and can be easily processed.

The purpose of this is to create a hole in the peripheral wall of the case in the depth direction from the open end when the terminal of a coil stored in a case with an open side is led out from the case, and to prevent water from entering the case and store the coil in the case. A slit is provided in which the end of the coil is bent at a nearly right angle, and the end of the coil is connected to the end of the Hiji wire.The end is inserted into the hole so that the end of the coil is inserted into the slit, and the synthetic resin is inserted into the case. This is achieved by encapsulating a photonic agent. In this case, it is best to use the elasticity of the covering of the Hiji wire to firmly fit it into the hole, which will make subsequent work easier and make it more durable.

Embodiments of the zero-phase current transformer of the present invention will be described in detail below with reference to the drawings. In FIG. 1, the peripheral wall 1tL at one corner of the case 1 is thickened, and two holes 2, which are deep from the opening side of the case 1 toward the bottom, are provided in this portion side by side. There is a slit 1b between this hole 2 and the inside of the case l.
is provided, and the hole 2 communicates with the inside of the case l.

The zero-phase current transformer housed inside this case 1 is connected to a terminal 4i of a coil 4 wound around an annular core 3, as shown in FIG.
z peels off the covering of the lead wire 5, wraps it around the tip 5α bent at a right angle, and solders it.

This annular iron core and the coil 4 wound thereon are housed in a case 1 as shown in FIG.
It is inserted into hole 2 with z sandwiched between slits lb. At this time, if the size of the hole 2 is determined so that the Hiji wire 5 is pushed strongly into the hole 2 using the elasticity of its coating, the lead wire 5 will stand upright on the peripheral wall of the case 1 and the filler will be sealed. There is no need to support the Hiji Line 5 when doing so, which is convenient for automating the work. Also, if you accidentally pull the Hide wire 5, the coil 4
The terminal will not be pulled and cut. Finally, as stated above, according to the present invention, the thin end of the coil of a small current transformer or transformer wound with a coil is connected to the sunrise wire, and this sunrise wire is fixed to the peripheral wall of the case. Therefore, even if the Hiji wire is accidentally pulled while working on a small current transformer or transformer or when incorporating it into other equipment, the coil terminal will not be disconnected and reliability will be maintained. expensive. Moreover, the configuration for this purpose is an excellent coil terminal processing structure that is simple and easy to automate.

[Brief explanation of the drawing]

FIG. 1 shows an example of a zero-phase current transformer case for performing coil terminal treatment according to the present invention, in which (A) is a plan view, (B) is a cross-sectional view taken along line x-X in (A), and FIG. Figure 2 is a connection diagram of the zero-phase current transformer coil housed in the case shown in Figure 1 and its connection to the Hiji line, and Figure 3 is the connection diagram of the zero-phase current transformer shown in Figure 2 in the case shown in Figure 1. FIG. 4 shows a state in which the case shown in FIG. 3 is filled with a filler, FIG. 4A is a plan view, and FIG. 4B is a partial side view of FIG. l: Teeth, 1α: Peripheral wall of the case, 1b: Slit of the case, 2 = Hole in the peripheral wall of the case, 4: Coil, 4α: Terminal of the coil, 5: Lead wire, 5α: Tip of the lead wire -16 : Filling agent. Sai1ku (A) P4 leap (B)

Claims (1)

[Claims] 1) - A processing structure for leading out the terminal of a coil housed in a case with an open surface from the case, which includes a hole extending in the depth direction from the open end in the peripheral wall of the case, and a hole that is exposed to water and the case. A slit that communicates with the coil storage portion of the case is provided, and the tip is bent at a nearly right angle, and the end of the coil is connected to the tip.The Hiji wire is inserted into the hole so that the tip enters the slit, and the case is closed. Coil terminal processing structure 0 characterized by enclosing a synthetic resin photonic agent into the coil terminal.