JPH1189018A - Installing structure of breaker for distribution board wiring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an installing structure of a breaker which allows easy peel-off of the external coating of secondary-side wires of breakers for branch wires, installed on a distribution board and shortens the length of a plurality of ground wires connected to those breakers for branch wires and thereby makes a wiring work easy. SOLUTION: This installing structure includes a main body 1 of a distribution board, a breaker 2 for a trunk wire installed on the main body of a distribution board, a plurality of breakers 3, 4 for branch wires installed on the main body of a distribution board, an installing member 10 for installing the breakers for branch wires on the main body of a distribution board, and a ground wire 7c wired from an external load to the inside of the main body of a distribution board and connected to the breakers for branch wires. In the installation member 10, a ground terminal section 13 is provided which connects the ground wire 7c so that the ground wire 7c face a load-side terminal 8 of a voltage electrode and a load-side terminal 9 of a neutral electrode of the breakers for branch wires near these terminals 8, 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a circuit breaker provided on a distribution board.

[0002]

2. Description of the Related Art FIG. 7 is a front view showing the inside of a conventional distribution board similar to that shown in Japanese Utility Model Laid-Open Publication No. 6-36307. FIG. 8 is an external perspective view showing a branch circuit breaker mounted on a conventional distribution board. In the figure, reference numeral 1 denotes a distribution board main body made of a metal casing, and 2 denotes a main circuit breaker. Reference numeral 3 denotes a circuit breaker for branch wiring (for two poles), and reference numeral 4 denotes a circuit breaker for branch wiring (for two poles) having one pole as a neutral pole.

[0005] Reference numeral 5 denotes a mounting bracket for mounting the branch wiring circuit breaker 3 or 4 to the distribution board main body 1, as shown in FIG.
As shown in FIG. 7, a circuit board breaker 3 or 4 with the branch wiring circuit breaker 3 or 4 attached to the mounting bracket 5
Are arranged in parallel. Reference numeral 6 denotes a collective ground terminal for connecting a later-described ground line 7c of a load (not shown). Reference numeral 7 denotes a secondary-side electric wire that is wired from the distribution board main body 1 to an external load (not shown). Generally, a three-core cable is used, 7a is a voltage line, 7b is a neutral line, and 7c is a ground line. is there. 8, reference numeral 8 denotes a voltage pole load side terminal, and 9 denotes a neutral pole load side terminal.

[0004] In such a conventional distribution board, for example, a grounding wire 7c required by the spread of OA equipment includes a ground wire 7c.
The secondary wire 7 of the core cable has a voltage wire 7a connected to the voltage pole load side terminal 8 in the case of a voltage of 100 V, and a neutral wire 7b.
Are connected to the neutral pole load side terminal 9, and the ground wire 7 c is connected to the collective ground terminal 6.

[0005]

In the conventional distribution board as described above, when the secondary wire 7 of the three-core cable including the ground wire 7c is connected, the voltage pole load side terminal 8 and the neutral Since the extreme load side terminal 9 and the collective grounding terminal 6 are far apart from each other, the voltage wires 7a and the neutral wires 7b of the secondary wire 7 and the outer skins of the grounding wires 7c are provided with steps at different lengths. In particular, there is a problem that the peel length of the outer skin of the ground wire 7c becomes longer, and a large number of work steps are required for the peeling of the outer skin.

Further, since the ground line 7c must be connected to the position of the collective ground terminal 6 by the number of the plurality of branch circuit breakers 3 or 4, the length of the ground line 7c is increased. In addition, since an extra wiring space is required, there is a problem that the distribution board becomes large and the wiring work becomes complicated.

The present invention has been made in order to solve the above-mentioned problems, and it is easy to peel off the outer sheath of the secondary-side electric wire 7 of the branch circuit breaker provided on the distribution board. Further, it is an object of the present invention to obtain a mounting structure for a distribution board wiring breaker in which the length of a plurality of ground wires connected to the plurality of branch wiring breakers is short and wiring work is easy.

[0008]

According to the present invention, a distribution board main body, a main wiring main circuit breaker mounted on the distribution board main body, and a distribution board main body. A plurality of branch circuit breakers mounted on the switchboard body, a mounting member for mounting the branch circuit breakers to the switchboard body, and a switchboard from an external load connected to the branch circuit breaker. In a mounting structure of a circuit breaker for a distribution board provided with a ground wire wired to the inside of the main body, the circuit breaker is provided on a mounting member, and a terminal for a voltage pole load side and a terminal for a neutral pole load side of the breaker for branch wiring are provided. A ground terminal portion for connecting a ground line is provided in the vicinity and at a position facing the above-mentioned both terminals.

The ground terminal is disposed at an intermediate position between the voltage load terminal and the neutral load terminal of the circuit breaker for branch wiring.

[0010] The ground terminal is disposed at a position different from the height of both the voltage load terminal and the neutral load terminal of the branch circuit breaker.

Further, the ground terminal is provided on a mounting claw for elastically pressing the circuit breaker for branch wiring and mounting the circuit breaker on the mounting plate.

Still further, the ground terminal portion is provided on a rail holder which is mounted on a DIN rail by elastically pressing the breaker for branch wiring.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a front view showing the inside of a distribution board according to Embodiment 1 of the present invention. FIG. 2 is an external perspective view showing the branch circuit breaker mounted on the distribution board. FIG. 3 is a perspective view showing a circuit breaker mount. In the figure,
1 to 4 and 7 to 9 are the same as those of the above-described conventional device,
The description is omitted.

In the drawing, reference numeral 10 denotes a mounting member for mounting the branch circuit breaker 3 or 4 to the distribution board main body 1, and the mounting foot 11 cut and raised at one end of the mounting plate 11 is bent.
a is formed. The other end of the mounting member 10 is formed of an elastic material such as a phosphor bronze plate or a stainless steel plate, and has a concave portion 3a for mounting the circuit breaker 3 or 4 for branch wiring.
Alternatively, a mounting claw 12 having a V-shaped convex portion 12a engaging with 4a is fixed. Reference numeral 13 denotes a ground terminal portion formed integrally with one end of the mounting claw 12, and a terminal screw 14 for connecting the ground wire 7c is screwed thereto.

The ground terminal section 13 is paired with the branch circuit breaker 3 or 4 near the voltage pole load terminal 8 and the neutral pole load terminal 9 of the branch circuit breaker 3 or 4. , The voltage pole load side terminal 8 of the branch circuit breaker 3 or 4
And at a position different from the height of the two load-side terminals 8 and 9 at a position substantially opposite to the neutral-pole load-side terminal 9 and at an intermediate position between the two terminals in the thickness direction of the circuit breaker housing. It is arranged. The mounting plate 11 and the mounting claws 12 are conductive, and are electrically connected to the board 1a of the power distribution panel main body 1, and the power distribution panel main body 1 is grounded to the ground.

In the mounting structure of the distribution circuit breaker for the distribution board thus configured, the secondary electric wire 7 of the three-core cable is used.
Is connected to the voltage pole load side terminal 8, the neutral pole load side terminal 9, and the ground terminal part 13 of the branch circuit breaker 3 or 4, the ground terminal part 13 is formed integrally with the mounting plate 11. Disposed in the vicinity of the voltage pole load side terminal 8 and the neutral pole load side terminal 9 and at a position opposite to the terminals 8 and 9;
Since the three terminals 8, 9, and 13 are arranged in a centralized manner, the three wires of the secondary wire 7 of the three-core cable are the voltage wire 7a, the neutral wire 7b, and the ground wire 7c. Have almost the same length, eliminating the necessity of providing a step and peeling the outer skin unlike the conventional apparatus, and simplifying the operation of peeling the outer skin.

Further, the length of the ground line 7c is shortened, and the wiring work is facilitated. Further, a ground terminal portion 13 is installed near the voltage pole load side terminal 8 and the neutral pole load side terminal 9 of each branch wiring breaker 3 or 4 in a pair with the branch wiring breaker 3 or 4. Since the three terminals 8, 9, 13 are concentrated in one place, the correspondence with the load becomes clear,
Wiring work efficiency is improved, and incorrect wiring can be prevented. In addition, it is not necessary to provide a collective ground terminal as in the conventional device, and it is not necessary to secure a wiring space for a plurality of ground wires 7c, so that the distribution board can be downsized.

The ground terminal portion 13 is substantially opposed to the voltage pole load side terminal 8 and the neutral pole load side terminal 9, and
Since it is arranged at an intermediate position between both terminals in the thickness direction of the circuit breaker housing, it becomes easy to insert a screwdriver during screwing work. Further, the ground terminal 13 is connected to the voltage pole load side terminal 8.
In addition, since it is disposed at a position different from the height of the neutral pole load side terminal 9, an insulation distance between the terminals can be ensured in a small space.

Embodiment 2 FIG. 4 is an external perspective view showing a branch circuit breaker according to Embodiment 2 of the present invention. In the figure, reference numeral 22 denotes a mounting claw as a mounting member for mounting the branch circuit breaker 3 or 4 to the distribution board main body 1, and a ground terminal portion 23 is formed at one end of the mounting claw 22 to form a ground wire. Terminal screw 14 for connecting 7c is screwed. Further, the ground terminal portion 23 is paired with the breaker 3 or 4 for branch wiring, and is substantially opposed to the vicinity of the voltage pole load side terminal 8 and the neutral pole load side terminal 9 of the branch breaker 3 or 4. In addition, it is disposed at an intermediate position between both terminals in the thickness direction of the circuit breaker housing, and is disposed at a position different from the height of the load terminals 8 and 9.

In the mounting structure of the circuit breaker for a distribution board thus configured, the secondary electric wire 7 of the three-core cable is used.
To the voltage pole load side terminal 8 of the branch circuit breaker 3 or 4.
When connecting to the neutral pole load side terminal 9 and the ground terminal part 23, the ground terminal part 23 is formed integrally with the mounting claw 22, and near the voltage pole load side terminal 8 and the neutral pole load side terminal 9. , Disposed at positions opposite to the terminals 8 and 9,
Since the terminals 8, 9, and 22 are arranged in one place, the voltage line 7a, the neutral line 7b, and the ground line 7c, which are the three wires of the secondary wire 7 of the three-core cable, are not provided. The lengths are almost the same, so that it is not necessary to form a step to peel off the outer skin as in a conventional distribution board, and the peeling operation of the outer cover is simplified.

Further, the length of the ground line 7c is shortened, and wiring work is facilitated. Further, a ground terminal portion 23 is installed near the voltage pole load side terminal 8 and the neutral pole load side terminal 9 of each branch wiring breaker 3 or 4 in a pair with the branch wiring breaker 3 or 4. Since the three terminals 8, 9, and 22 are concentrated in one place, the correspondence with the load becomes clear, the wiring work efficiency is improved, and incorrect wiring can be prevented.

Embodiment 3 FIG. FIG. 5 is a side view showing a branch wiring circuit breaker according to Embodiment 3 of the present invention. FIG.
FIG. 6 is a bottom view showing a mount of the circuit breaker for branch wiring in FIG. 5. In the figure, reference numeral 31 denotes a DIN rail for attaching the branch circuit breaker 3 or 4 to the distribution board body 1.

Reference numeral 32 denotes a rail holder for connecting the branch wiring circuit breaker 3 or 4 to the DIN rail 31, and a ground terminal 33 is formed at one end of the rail holder 32. Reference numeral 34 denotes a spring which elastically presses the DIN rail 31 to prevent it from coming off. The ground terminal 33 is paired with the branch wiring breaker 3 or 4, and the branch wiring breaker 3
Or 4 is substantially opposed to the voltage pole load side terminal 8 and the neutral pole load side terminal 9 and is installed at an intermediate position in the thickness direction between both terminals, and the voltage pole load side terminal 8 and the neutral pole It is arranged at a position different from the height of the load-side terminal 9.

In the mounting structure of the circuit breaker for the distribution board thus configured, the secondary electric wire 7 of the three-core cable is used.
To the voltage pole load side terminal 8 of the branch circuit breaker 3 or 4.
When connecting to the neutral pole load side terminal 9 and the ground terminal part 33, the ground terminal part 33 is formed integrally with the rail holder 32, and the voltage pole load side terminal 8 and the neutral pole load side terminal 9
In the vicinity of the two terminals 8, 9 and the three terminals 8, 9, 33 are concentrated in one place. The three wires of the electric wire 7, the voltage wire 7a, the neutral wire 7b, and the ground wire 7c, have almost the same length, so that it is not necessary to form a step and peel the outer skin as in the conventional device, and the peeling operation of the jacket is eliminated. Is simplified.

In addition, wiring work when connecting the secondary side electric wire is facilitated. Further, the ground terminal section 33 is provided near the voltage pole load side terminal 8 and the neutral pole load side terminal 9 of each branch wiring circuit breaker 3 or 4, and the branch wiring circuit breaker 3 or 4.
Since the three terminals are concentrated in one place, the correspondence with the load becomes clear, the wiring work efficiency is improved, and incorrect wiring can be prevented. .

[0026]

Since the present invention is configured as described above, it has the following effects.

According to the structure for mounting the circuit breaker for distribution board of the present invention, the circuit breaker for branch wiring is provided on the mounting member for mounting the circuit breaker on the distribution board body, and the voltage pole load side of the circuit breaker for branch wiring is provided. In the vicinity of the terminal and the neutral pole load side terminal, and at a position facing the above both terminals, a ground terminal portion for connecting a ground wire is provided, so that three terminals are centrally disposed at one place. Therefore, the voltage wires, neutral wires, and ground wires, which are the secondary wires, have almost the same length, eliminating the need to separate the outer skin with steps as in the conventional device. Simplification and simplification of wiring work when connecting the secondary side electric wire are facilitated. In addition, the length of the ground wire is shortened, and a collective ground terminal as in the conventional device is not required, and it is not necessary to secure a wiring space for a plurality of ground wires, so that the distribution board can be downsized.

The grounding terminal is provided on the mounting member, and is located between the two terminals at a position in the vicinity of the voltage pole load side terminal and the neutral pole load side terminal of the branch circuit breaker. Is located at a position different from the height of both terminals at the intermediate position of the three terminals.Thus, three terminals are concentrated in one place, the correspondence with the load becomes clear, the wiring work efficiency improves, and Wiring can be prevented.

Further, since the ground terminal portion is provided on the mounting claw which is mounted on the mounting plate by elastically pressing the breaker for branch wiring, the wiring work when connecting the secondary side electric wire is facilitated.

Further, since the ground terminal portion is provided on the rail holder which is mounted on the DIN rail by elastically pressing the breaker for branch wiring, the wiring work when connecting the secondary side electric wire is facilitated.

[Brief description of the drawings]

FIG. 1 is a front view showing a distribution board according to Embodiment 1 of the present invention.

FIG. 2 is an external perspective view showing a branch wiring circuit breaker according to Embodiment 1 of the present invention.

FIG. 3 is a perspective view showing a circuit breaker mount according to the first embodiment of the present invention.

FIG. 4 is a perspective view showing a branch circuit breaker according to Embodiment 2 of the present invention.

FIG. 5 is a side view showing a branch circuit breaker according to Embodiment 3 of the present invention.

FIG. 6 is a bottom view of the branch circuit breaker shown in FIG. 5;

FIG. 7 is a front view showing a conventional distribution board.

FIG. 8 is an external perspective view showing a branch circuit breaker mounted on a conventional distribution board.

[Explanation of symbols]

1 Distribution board main body, 2 Main circuit breaker, 3, 4 Branch circuit breaker, 5 Mounting bracket, 7 Secondary wire, 7c
Ground wire, 8 voltage pole load side terminal, 9 neutral pole load side terminal, 10 mounting members, 12 mounting claws, 13 ground terminal portions, 22 mounting claws (mounting members), 23 ground terminal portions, 3
1 DIN rail, 32 rail holder (mounting member),
33 Ground terminal

Claims (5)

[Claims] 1. A distribution board main body, a main circuit breaker mounted on the distribution board body, a plurality of branch wiring breakers mounted on the distribution board body, and a branch wiring breaker A wiring member for a distribution board, comprising: a mounting member for mounting a switch to the distribution board body; and a ground wire wired from an external load connected to the branch circuit breaker to the inside of the distribution board body. In the mounting structure of the circuit breaker, the ground wire is provided on the mounting member, in the vicinity of the voltage pole load side terminal and the neutral pole load side terminal of the branch wiring circuit breaker, at a position facing the both terminals, and A mounting structure for a circuit breaker for a distribution board, wherein a ground terminal portion to be connected is provided. 2. The ground terminal portion is disposed at an intermediate position between both terminals of a voltage pole load terminal and a neutral pole load terminal of the branch circuit breaker. Mounting structure of circuit breaker for distribution board. 3. The ground terminal portion is disposed at a position different from the height of both the voltage load terminal and the neutral load terminal of the branch circuit breaker. Or the mounting structure of the circuit breaker for distribution boards according to claim 2. 4. The mounting terminal according to claim 1, wherein the ground terminal portion is provided on a mounting claw for pressing the branch circuit breaker elastically to mount the branch wiring circuit breaker on the mounting plate. Mounting structure of circuit breaker for distribution board. 5. The ground terminal section is provided on a rail holder mounted on a DIN rail by elastically pressing a circuit breaker for branch wiring. Mounting structure of circuit breaker for distribution board.