JPH10106424A - Earth leakage breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earth leakage relay in which the connection of an earth wire is extremely simple, and sure. SOLUTION: In an earth leakage relay 1, a leak detection circuit, power source terminals 3, load terminals 4, and a tab terminal which is an earth wire connection portion connected to the leak detection circuit are arranged on a board 2. The board 2 is contained in a case 6 composed of a lid body 6A and a base 6B, and the power source terminals 3 and the load terminals 4 are respectively exposed outside the case 6 from a power source terminal opening 6a and a load terminal opening 6b which are provided on the case 6. An earth wire insertion opening 7 is provided on the side face 6c of the case 6, the tab terminal is provided in the vicinity of the earth wire insertion opening 7, the tab terminal is fixed to a slit portion 6C provided in the cover 6A of the case 6, and an earth wire 8 equipped with a Faston terminal 8a which is a connection portion connectable to the tab terminal is connected thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth leakage circuit breaker which detects an earth leakage in an electric facility and cuts off current to the electric facility.

[0002]

2. Description of the Related Art In an electric facility such as a vending machine or a water heater, an earth leakage breaker for shutting off the supply of electric equipment when an earth leakage is detected is provided. In some cases, a ground is required to escape the ground, and a ground wire is provided for that purpose. Conventionally,
As a structure for connecting a ground wire to an earth leakage breaker, there is, for example, Japanese Utility Model Publication No. 5-37393. This is because a hole (14) for leading out the ground wire (15) is formed in the case body (2) of the earth leakage breaker (1) so as to be continuous with the hole (10).
A ground wire (15) is soldered to the leakage detection circuit of the board (3).

[0003]

However, in the earth leakage circuit breaker described in Japanese Utility Model Publication No. 5-37393, the ground wire (15) is soldered to the substrate (3).
There are drawbacks in that the connection is troublesome and the management in the manufacturing process is complicated, for example, a soldering failure must be checked.

Also, there is a disadvantage that the operation of inserting the ground wire (15) into the case main body (2) is very complicated, and that the assembly of the earth leakage breaker (1) is complicated.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional earth leakage breaker, an object of the present invention is to provide an earth leakage circuit breaker in which the connection of the ground wire is extremely simple and reliable. A leakage detection circuit, a power supply terminal, a load terminal, and a ground wire connection portion connected to the leakage detection circuit,
An earth leakage breaker in which the substrate is housed in a case composed of a lid and a base, and the power terminal and the load terminal are respectively exposed to the outside of the case from a power terminal port and a load terminal port provided in the case. A ground wire insertion port is provided on a side surface of the case, the ground wire connection portion is provided near the ground wire insertion port, and the ground wire connection portion is fixed to a groove provided in a cover of the case and can be connected to the ground wire connection portion. This is to connect a ground wire provided with a connection portion.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An earth leakage circuit breaker is grounded by connecting an earth wire connection to an earth line connection of the earth leakage breaker and connecting one end of the earth wire to an earth terminal.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the earth leakage breaker according to the present invention is shown in FIGS.
As shown in FIG. Hereinafter, description will be given based on these drawings.

An earth leakage breaker 1 includes an earth leakage detecting circuit (not shown), power terminals 3 and 3, and load terminals 4 and 4 on a substrate 2.
And a tab terminal 5 which is a ground wire connection portion connected to a leakage detection circuit. The substrate 2 is housed inside a case 6 composed of a lid 6A and a base 6B. 6a, 6a and the load terminals 6b, 6b to the power terminals 3,
3 and the load terminals 4 and 4 are exposed to the outside of the case 6, respectively. A ground wire insertion port 7 is provided on a side surface 6 c of the case 6, a tab terminal 5 is provided near the ground wire insertion port 7, and the tab terminal 5 is provided in a groove 6 provided in a cover 6 </ b> A of the case 6.
C, and a ground wire 8 provided with a faston terminal 8a, which is a connection portion connectable to the tab terminal 5, is connected.

The earth leakage breaker 1 is grounded by connecting the fast terminal 8a, which is the connection part of the earth wire 8, to the tab terminal 5 of the earth leakage breaker 1 and connecting one end 8b of the earth wire 8 to the earth terminal.

In this embodiment, the tab terminal 5 is connected to the ground wire connecting portion, and the faston terminal 8a is connected to the ground wire connecting portion.
However, the present invention is not limited to this. For example, there is no problem with a connector, and it can be appropriately changed without departing from the gist of the present invention.

Further, the position of the ground wire insertion port 7 may be any position on the side surface of the case of the earth leakage breaker, and can be appropriately changed without departing from the gist of the present invention.

Further, the shape of the groove 6C provided in the cover 6 is not limited to the present embodiment, but can be appropriately changed without departing from the gist of the present invention.

[0013]

As described above, the earth leakage circuit breaker according to the present invention has a leakage detection circuit, a power supply terminal, a load terminal, and a ground wire connecting part connected to the leakage detection circuit on a substrate. An earth leakage breaker in which the substrate is housed in a case consisting of a lid and a base, and the power terminal and the load terminal are respectively exposed to the outside of the case from a power terminal port and a load terminal port provided in the case. A ground wire insertion port is provided on a side surface of the case, and the ground wire connection portion is provided near the ground wire insertion port. The ground wire connection portion is fixed to a groove provided in a cover of the case, and can be connected to the ground wire connection portion. By connecting the ground wire provided with a suitable connection portion, the connection of the ground wire to the earth leakage breaker can be made extremely simple and reliable. In addition, since the ground wire connecting portion is securely fixed, the peeling of the pattern of the substrate can be prevented, and the deformation of the ground wire connecting portion can be prevented. In addition, if the ground wire connection portion is not attached straight, it cannot be assembled into the case, so that there is an effect that defects in the ground wire connection portion can be found in the manufacturing process.

[Brief description of the drawings]

FIG. 1 is an external front explanatory view of a state in which a ground wire is attached to an earth leakage breaker according to the present invention.

FIG. 2 is an explanatory right side view of the appearance of the earth leakage breaker according to the present invention with a ground wire attached thereto.

FIG. 3 is an explanatory side view of a terminal portion of the earth leakage breaker according to the present invention.

FIG. 4 is an explanatory diagram of the inside of a lid of the earth leakage breaker according to the present invention.

FIG. 5 is an explanatory diagram of a ground wire connection part of the earth leakage breaker according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Earth leakage breaker, 2 ... Board, 3 ... Power terminal, 4 ... Load terminal, 5 ... Tab terminal, 6 ... Case, 6A ... Lid, 6B ..Base, 6C: groove, 7: ground wire insertion port, 8: ground wire.

Claims (1)

[Claims] An electric leakage detection circuit, a power supply terminal,
A load terminal and a ground wire connection part connected to the earth leakage detection circuit are arranged, and the board is housed in a case composed of a lid and a base, and a power supply terminal port and a load terminal port provided in the case are connected. In the earth leakage breaker in which the power supply terminal and the load terminal are respectively exposed to the outside of the case, a ground wire insertion port is provided on a side surface of the case, and the ground wire connection portion is provided near the ground wire insertion port, An earth leakage circuit breaker fixed to a groove provided in a cover of the case and connected to an earth wire provided with a connection part connectable to the earth wire connection part.