JPH019087Y2 - - Google Patents

Description

[Detailed Description of the Invention] Description of the Technical Field The present invention relates to improvements in the internal wiring of circuit breakers and breakers such as current leakage and breakers. Explanation of the prior art Taking the conventional earth leakage and disconnection as an example, it is shown in Fig. 1.
The inside of the case 1 consists of a shingle break section 2 , a ground leakage tripping device 3, a test button device 4, a primary conductor 5, a zero-phase current transformer 6, and an amplifier circuit 7 . An earth leakage tripping device 3 and a test button device 4 are arranged on the part 2 side, and a lead wire 10 is wired to pass through a barrier 9 provided between the shingle breaking part 2 and the earth leakage detection part 8 to form an amplifier circuit 7.
is connected to. At this time, the lead wire 10 passes through the upper part of the trip rod 11 that operates to break the sheath in the event of an overload or short circuit of the component of the sheath break section 2, and also approaches the bimetal 12 as a thermal element. If the lead wire 10 becomes slack due to the wiring, it may hinder the operation of the trip rod 11 or the bimetal 12, resulting in problems such as overload, short circuit, disconnection, or disconnection part 2 not operating. It was hot.
In addition, when a barrier 9 is provided between the shield section 2 and the earth leakage detection section 8 , the volume on the shield section 2 side decreases, and the internal pressure of the shield section 2 is reduced due to the arc energy when a short circuit occurs. There was a problem in which the rise became too high and in extreme cases led to damage to Case 1. Purpose of the invention The purpose of this invention was to eliminate the slack in the lead wires inside the case, and also to prevent circuit breakers and circuit breakers that have a barrier that can also adjust the internal pressure. Our goal is to provide Noshiya disconnectors. DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the structure of the present invention will be described with reference to drawings. Fig. 2 An earth leakage and disconnection section consisting of a ladder and disconnection section 2 , an earth leakage tripping device 3, a test button device 4, a primary conductor 5, a zero-phase current transformer 6, and an earth leakage detection section 8 consisting of an amplifier circuit 7. In the device, a barrier 13 is provided at a partition between the shingle break section 2 and the earth leakage detection section 8 .
grooves 14 are provided in three places, and an earth leakage tripping device 3 and a test button device 4 are provided on the side of the sheath section 2 .
The lead wire 10 connecting the earth leakage detection section 8 and the groove 14
Secure it by locking it in an S-shape. At this time, the depth of the groove 14 is determined so that the gas at the time of short circuit or disconnection passes through the groove 14 of the barrier 13 and escapes to the earth leakage detection part 8 side.
The depth is set to an appropriate level so that the internal pressure of the sheath section 2 does not increase excessively and does not affect the detection circuit. FIG. 3 is a perspective view of the barrier 13. Effect of the invention According to the above structure, the barrier 13
The groove 14 provided in the short-circuit and disconnection barrier 13 , which is used as a partition between the earth leakage detection part 8 and the earth leakage detection part 8, allows gas to escape to the earth leakage detection part 8 side, thereby making it possible to adjust the internal pressure to suppress an increase in internal pressure. Furthermore, since the lead wire 10 is hung in an S-shape using the groove 14 of the barrier 13, the lead wire 10 is firmly fixed, so that there is no slack in the lead wire 10, and the lead wire 10 is not sagged at the shingle section 2 , especially the trip rod. Even if the wiring passes through the top of the trip rod 11 and is close to the bimetal 12, the trip rod 1
1 and the bimetal 12. Modification Example The above example uses an earth leakage circuit or disconnection circuit, but the same applies to a circuit circuit or circuit disconnection circuit.Also, the direction of the groove 14 of the barrier 13 is arranged on the side surface as shown in Fig. 4. Of course, the same effect can be obtained even if Overall Effects According to the present invention, by firmly fixing the lead wire to the barrier, it is possible to reliably perform the cutting operation in the event of an overload, short circuit, or disconnection without contacting the trip rod or bimetal. In addition, it has the effect of being able to adjust the internal pressure using the grooves in the barrier.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a conventional earth leakage circuit breaker with the top cover removed, and Figure 2 is a plan view of an embodiment of the current leakage circuit breaker of the present invention with the top cover removed. Figure 3 is a perspective view of the barrier applied to the shiya disconnector of the present invention.
FIG. 4 is a perspective view of another embodiment of the barrier. 1...Case, 2 ...Shrink section, 3...Earth leakage tripping device, 4...Test button device, 5...
Primary conductor, 6...Zero-phase current transformer, 7...Amplification circuit,
8... Earth leakage detection section, 10... Lead wire, 11...
Trip rod, 12...bimetal, 13...barrier, 14...groove.

Claims (1)

[Scope of utility model registration request] This device consists of a bimetal that detects overcurrent, a trip rod that is activated by the action of this bimetal, and a trip device that disconnects the trip rod and interrupts the circuit.It detects short-circuit current flowing in the circuit. In a shield disconnector in which a detection section consisting of a zero-phase current transformer and an amplifier circuit for amplifying this detected current are each housed in a case made of an insulating material, an insulation is provided to separate the shield disconnection section and the detection section. Drill three grooves in the barrier with a depth equal to or greater than the groove width, and insert the lead wires connecting the shingle cut part and the detection part into the grooves in an S-shape in a direction perpendicular to the wiring direction. A shiya disconnector characterized by being fixed in place.