JPH1154017A - Wiring circuit breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the connection of an earth cable to a wiring circuit breaker simultaneously with the connection a VVF 3-core wire consisting of collectively sheathed power source line and earth cable, and dispense with the work of distributing the earth cable by providing an earth terminal for connecting the earth cable. SOLUTION: A double pole power source-side terminal part 2 and a double pole load side terminal part 3 are provided opposite to each other in the front and rear of a case 1 for wiring circuit breaker through a switch mechanism, an interrupting mechanism or the like. An earth terminal 4 is provided adjacently to the load side terminal part 3. When a wire 21 having an earth cable integrated thereto such as a VVF 3-core wire consisting of collectively sheathed power source lines 21a and an earth cable 21b is connected to a plug socket with such an earth terminal, the power source lines 21a and earth cable 21b are branched, whereby the power source lines 21a can be connected to the load side main circuit connecting terminal parts 3, and the earth cable 21b can be also connected to the earth terminal 4 adjacent to the terminal part 3, so that the work of distributing the earth cable 21b in a direction different from the power source lines 21a is dispensed with.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker which can be connected to an electric wire incorporating a ground wire wired to an outlet or the like having a ground terminal.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a circuit breaker for wiring does not have a terminal for connecting a ground wire. The wire 21a is connected to a terminal 22 for connecting the main circuit of the circuit breaker, while the ground wire 21b is connected to a not-shown ground terminal provided at a corner of a box to which the circuit breaker is attached, away from the circuit breaker. is there.

[0003]

However, in this prior art, the electric wire 21 is stripped of its outer covering near the circuit breaker, and branched into a power line 21a and a ground line 21b.
In order to connect the ground wire 21b to a ground terminal portion remote from the circuit breaker, the ground wire 21b must be routed in a direction different from that of the power supply wire 21a, which is not only troublesome, but also troublesome. The power line 21a or the ground line 21 having a different length from the power line 21a and the ground line 21b
It is necessary to cut b, and there is a problem that the electric wire is wasted correspondingly. In addition, in a distribution / distribution panel in which a large number of branch circuit breakers are incorporated, there is a problem that the combination of the power supply line and the ground line of each electric wire becomes unclear.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is characterized in that a wiring breaker is provided with an earth terminal for connecting an earth wire.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described in detail with reference to FIGS. Reference numeral 1 denotes a case of a circuit breaker for wiring in which an opening / closing mechanism, a breaking mechanism, etc. are incorporated. Side terminal portions 3 are provided facing each other. These two terminal portions 2 and 3 have two-polar terminals 2a and 2b and terminals 3a and 3b, respectively, that is, a voltage, neutral or voltage power supply line, and a 100V or 200V indoor wiring. It is provided so that it becomes. Reference numeral 4 denotes an earth terminal provided adjacent to the terminal portion 3 on the load side, and a plug-in fitting 6 is connected to the earth terminal 4. A plug plate portion 5a of a short-circuit bar 5 connected to a ground terminal (not shown) is fitted into and removed from the plug-in fitting 6. Of course, the ground terminals and short-circuit bars 5 of the wiring breakers at the ends arranged in a row are connected to grounding terminal portions provided at corners of a box to which a breaker (not shown) is attached.

As shown in FIGS. 1, 2 (A) and 3 (A), the terminals 3a and 3b of the terminal 3 on the load side are provided in the upper portion on the rear side of the case 1 through the rear plate 1a. Wire insertion hole 11,
Although the screw terminal faces the terminal 11, it may be a screwless terminal similar to the ground terminal 4 described later. The ground terminal 4 is provided below the one terminal 3a of the terminal portion 3 with an insulating partition plate 12
And a screw-less terminal which detaches the connection by the locking spring 8 by operating the release lever 7 which protrudes the operation portion 7a from the window hole 13 provided in the rear side plate portion 1a. ing.

The plug-in fitting 6 connected to the ground terminal 4 is provided below the terminal plate 4a of the ground terminal 4, and is shown in FIGS. 1 and 2A and 2B. The plug-in fitting 6 faces the opening 14 of the case 1 so that the plug plate 5a of the short-circuit bar 5 can be fitted and removed from the opening 14 side of the rear plate 1a of the case 1. . That is, the plug-in fitting 6 has clip plate portions 6b, 6b extended in front of both sides of a back plate portion 6a suspended from the base end of the terminal plate portion 4a, and a fitting opening is formed in the front. 3A and 3B, the plug-in fitting 6 has an opening at the bottom of the case 1 so that the plug plate portion 5a of the short-circuit bar 5 can be fitted and removed from the bottom side of the case 1. It should be facing. That is, the plug-in fitting 6 is provided on both sides of the terminal plate portion 4a.
b and 6b are vertically provided to form a fitting opening below.
FIG. 4 is a perspective view showing another embodiment of the present invention, and the description of the same parts as those in the above embodiment is omitted. In this embodiment, the short-circuit bar 5 is formed in a plate shape. A horizontally long opening 14 is provided in the rear plate 1a of the case 1 so as to correspond thereto. By doing so, the short-circuit bar 5 can use the plate material itself, and the processing becomes unnecessary. Note that the plate-shaped short-circuit bar 5 may be vertically arranged so that the opening 14 is connected from above with a wiring breaker provided on the bottom surface of the case 1.

In the above-mentioned structure, since the ground terminal 4 is provided adjacent to the main circuit connection terminal 3 on the load side, the power line 21a connected to the outlet with the ground terminal is connected to the ground. V covered with wire 21b
In order to connect the electric wire 21 incorporating a ground wire such as a VF3 core wire, the outer sheath is removed, and the power wires 21a, which are the respective core wires, are connected.
The power supply line 21a is connected to the main circuit connection terminal portion 3 on the load side by branching off the ground wire 21b and stripping the insulating coating of each core wire. The ground wire 21b is also connected to the ground terminal 4 adjacent to the terminal portion 3. Can be connected to the power line 2
There is no need for a work of drawing in a direction different from 1a. In addition, there is an advantage that the combination of the power supply line and the ground wire of each electric wire is clear even in a distribution / distribution panel in which a large number of branch circuit breakers are incorporated.

In the above embodiment, the description has been given of the circuit breaker for two poles. However, the same applies to the circuit breaker for three poles. The ground terminal 4 is connected to a short-circuit bar 5
The plug-in fittings 6a are connected in series in order to make connection possible, and there is an advantage that the connection work is easy. However, as long as it can be accurately connected to the ground terminal portion, the configuration of a screw terminal, a screwless terminal, etc. Needless to say, it may be. Further, the ground terminal need only be within the circuit breaker without being adjacent to the main circuit connection terminal on the load side. A plurality of ground terminals are provided and the ground wire 2 can be used without using the short-circuit bar 5.
The ground terminals of other adjacent circuit breakers to which the circuit breaker 1b is not connected may be connected to the ground with separate electric wires and connected to the ground terminal provided at the corner of the box to which the circuit breaker is attached.

[0010]

According to the present invention, as is apparent from the above description, since the ground terminal for connecting the ground wire is provided, the power supply line and the ground wire can be connected together to connect an electric wire such as a VVF three-core wire which is sheathed and covered. Since the ground wire may be connected to the circuit breaker, it is not necessary to route the ground wire. In addition, there is an advantage that the combination of the power supply line and the ground line of each electric wire is clear even in a distribution / distribution panel in which a large number of branch wiring breakers are incorporated. Therefore, the present invention has the problem of the conventional wiring breaker. It is a major contribution to the industry as a solution to the above.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 shows an embodiment of the present invention, wherein (A) is a side view of a main part, and (B) is a perspective view of a plug-in fitting and a short-circuit bar.

FIG. 3 shows another embodiment of the present invention, in which (A)
FIG. 2 is a side view of a main part, and FIG. 2B is a perspective view of a plug-in fitting and a short-circuit bar.

FIG. 4 is a perspective view showing another embodiment of the present invention.

FIG. 5 is a perspective view showing a conventional example.

[Explanation of symbols]

 4 Ground terminal 5 Shorting bar 6 Plug-in fitting

Claims (2)

[Claims] An earth terminal for connecting an earth wire.
(4) A circuit breaker for wiring, which is provided with (4). 2. The circuit breaker according to claim 1, wherein a plug-in fitting (6) for connecting a short-circuit bar (5) to the ground terminal (4) is provided in series.