JP2000222995A - Branch breaker connector - Google Patents

Abstract

(57) [Problem] To provide a branch circuit breaker connector which can simplify the wiring work of attaching the branch circuit breaker to a main bar in a distribution board. SOLUTION: Insertion terminal portions 21b and 22b connected to a belt-shaped main bar 5 whose band surface is installed vertically, and a circuit breaker 1 for branching.
The connection conductors 21 and 22 having the connection terminal portions 21a and 22a for connection to the connector 20
And the connection terminals 21a, 22 around the connection device.
The branch circuit breaker unit 10 is screwed and connected to a to form a three-part integrated circuit breaker unit. The branch circuit breaker unit is inserted into the main bar 5 via the insertion terminal portions 21b and 22b. Added support for connection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for connecting a branch circuit breaker to a circuit conductor of a main circuit breaker inside a distribution board or a control panel.

[0002]

2. Description of the Related Art FIG. 6 is a front layout view showing a part of a conventional distribution board disclosed in, for example, Japanese Patent Laid-Open No. 9-298026, FIG. 7 is a bottom view showing a part of the distribution board, and FIG. It is an external appearance perspective view of a branch circuit breaker. In the drawing, 10 is a branch circuit breaker, 11 and 12 are power supply side terminals of the branch circuit breaker 10, which are arranged in two stages as shown in FIG. 8, and load side terminals 13 and 14 correspond to opposite sides. It is provided. Reference numeral 1 denotes a main circuit breaker of a distribution board, and 2 (2a and 2b) denote main bars of band-shaped conductors wired from the load side terminals of the main circuit breaker 1 to the inside of the distribution board. Are arranged in parallel with the bottom surface of. Normally, the voltage line bar 2b is arranged in parallel on both sides of the lower side with the neutral line bar 2a of the single-phase three-wire wiring system as the center apex. Reference numerals 3 (3a and 3b) denote connection conductors that connect the power supply side terminal 11 and the neutral line bar 2a and the power supply side terminal 12 and the voltage line bar 2b of the branch circuit breaker 10, respectively. The connection of the connection conductor 3 is tightened by a small screw 4 into a screw hole provided in advance in the neutral wire bar 2a and the voltage wire bar 2b.

[0003]

As described above, the conventional wiring work of the branching circuit breaker 10 of the distribution board is performed by the power supply terminal 11 and the neutral wire bar 2a, and the power supply terminal 12 and the voltage wire bar 2b. Must be tightened with small screws 4 using the connection conductors 3, respectively, and the wiring work requires a lot of labor. The power supply terminals 11 and 12 of the branch circuit breaker 10 arranged on both sides of the main bar 2 are connected to the branch circuit breaker 1.
Since the zeros face each other, the power supply side terminals 11 and 12 are not at symmetric positions. Therefore, the voltage line bar 2b has to be arranged with its screw hole shifted so as to correspond to the power supply side terminal 12. That is, two types of voltage bar 2b were required. Further, there is a problem that the branch circuit breaker 10 can be mounted only at a place where the screw holes for tightening are provided on the neutral wire bar 2a and the voltage wire bar 2b.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a branch circuit breaker connector which can simplify the work of mounting and wiring a branch circuit breaker 10 of a distribution board. I do.

[0005]

A connector of a branch circuit breaker according to the present invention comprises a neutral line bar and a voltage line bar which are arranged in parallel on a bottom surface side of a distribution board with a vertical band surface. A branch circuit breaker arranged with the power supply terminals facing each other from both sides of the band-shaped main bar to the band-shaped main bar, and the neutral line bar and the power supply side of the branch circuit breakers on both sides are connected. The first connection conductor for connecting the terminals is T-shaped, and connection terminals for connection to the power supply side terminal of the branch circuit breaker are provided at both ends of the upper side thereof. And a second connection conductor connecting the voltage line bar and the power supply side terminal of the one-side branch circuit breaker has an L-shape, and a power supply side terminal is provided at one end of the second connection conductor. And a connection terminal portion for connecting to the voltage line bar at the other end of the L-shape. A connecting terminal is formed by forming an insertion terminal portion, and the first connecting conductor and the second connecting conductor are insulated and held by an insulating block to form a connecting device. The plug-in can be connected to any position of the camera.

For example, in a connection for obtaining a 200-volt circuit from a single-phase three-wire distribution line for general household use,
A power strip terminal is placed on both sides of the main strip bar, consisting of a neutral bar and a voltage bar, which are arranged in parallel with the strip surface vertical to the bottom side of the distribution board. To connect the branch circuit breaker,
A first connection conductor for connecting one of the two voltage line bars to the power supply terminal of each of the branch circuit breakers on both sides is formed in a T-shape and connected to the power supply terminal at both ends of the upper side thereof. A connection terminal portion is provided, and a plug-in terminal portion that is plugged into and connected to one of the voltage line bars is formed at the tip of the T-shaped vertical side, and the other voltage line bar and the branch circuit breakers on both sides of the voltage line bar are provided. The second connection conductor for connecting the power supply side terminal of the first embodiment has a T-shaped connection terminal portion provided at both ends of an upper side thereof for connection with the power supply side terminal, and the other voltage line bar is provided at the tip of the vertical side of the T shape. The first connection conductor and the second connection conductor are insulated and held by an insulating block to form a connection device, and the connection device and the branch circuit breaker are integrated. Can be plugged into any position on the main bar. It is obtained by way.

Further, the first connecting conductor and the second connecting conductor are formed by bending a strip-shaped thin plate conductor,
By forming both ends of the strip-shaped thin plate conductor so as to be insertion terminal portions, formation of the insertion terminal portion is facilitated.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a front view of the inside of a distribution board showing Embodiment 1 of the present invention, FIG. 2 is a bottom view showing a part of the distribution board, and FIG. 3 is an exploded perspective view of a connector. In the figure, 1 is a main circuit breaker, 4 is a small screw,
10 is a branch circuit breaker, 11 and 12 are power supply side terminals of the branch circuit breaker 10, and 13 and 14 are load side terminals, which are the same as those shown in the above-mentioned prior art. 5 (5a and 5b) are main bars of strip-shaped conductors wired in the distribution board from the load side terminals of the main circuit breaker 1;
The strip surface is arranged vertically on the bottom of the distribution board. In the case of the single-phase three-wire system, the voltage line bars 5b are arranged side by side with the neutral line bar 5a at the center.

Reference numeral 20 denotes a connector according to the present invention, which includes connection conductors 21 and 22, an insulating block 23, and the like, as described later. That is, 21 is a first connection conductor formed substantially in a T shape, 22 is a second connection conductor formed in a substantially L shape, 23 is an insulating block formed of a synthetic resin material, and 23a is provided on the insulating block 23. T-groove, 2
3b is an L-shaped groove. Reference numeral 24 denotes a clip spring, and reference numeral 23c denotes an insulating block cover formed of a synthetic resin material. The connector 20 includes a first connection conductor 21 and two second connection conductors 2.
2 is incorporated in the T-shaped groove and the L-shaped groove of the insulating block 23.

Next, the configuration of the connector 20 will be described with reference to FIG. The first connection conductor 21 is formed by bending an elongated thin copper plate into a T-shape, and both ends of the folded and T-shaped upper side are connection terminal portions 21a. Are provided with terminal holes for connection with small screws 4. Since the position of the power supply side terminal 11 of the branch circuit breaker 10 to be connected is not on the center line of the branch circuit breaker 10, the connection terminal portions 21 a on both sides are centered corresponding to the position of the power supply side terminal 11. It is provided at a position shifted from the line.

At the end of the T-shaped vertical side of the first connection conductor 21, an insertion terminal portion 21b is formed for sandwiching and connecting the main bar 5 with both ends of an elongated thin copper plate being forked. A clip spring 24 for holding a contact pressure with the main bar 5 is attached to the insertion terminal portion 21b.
The clip spring 24 is fitted in a concave portion (not shown) provided in the insertion terminal portion 21b so as to be held at a predetermined position.

The second connecting conductor 22 is also formed in an L-shape by bending an elongated thin copper plate. One side edge of the folded L-shape is a connection terminal portion 22a, and a terminal hole for connecting to the power supply side terminal 12 of the branch circuit breaker 10 is provided. The other end of the L-shape is the end of the bending of the thin and thin copper plate, and the thin plate is made into two branches to form a plug-in terminal portion 22b for holding and connecting the main bar 5. A clip spring 24 for holding the contact pressure with the main bar 5 is similarly attached to the insertion terminal portion 22b.

The first connecting conductor 2 formed as described above
1 is a T-shaped groove 24a formed in the insulating block 23.
The connection terminal 21a and the insertion terminal 21b project from the insulating block 23. Each of the two second connection conductors 22 has an L-shaped groove 23b.
The connection terminal portion 22a and the insertion terminal portion 2
The connection terminal portion 2 b protrudes from the insulating block 23. The connection terminal portions 22a of the two second conductive members 22 attached to the insulating block 23 are provided so as to be oblique to the connection terminal portions 21a of the first conductive member 22 when viewed from the front. Have been. In this state, the connector 20 is formed by attaching the insulating block cover 23c, and insulation and reinforcement of the insulating block 23 are performed.

As described above, the power supply terminals 11 and 12 of the branch circuit breaker 10 are screwed to the connection terminal portions 21a and 22a protruding from the insulating block 23 with the small screws 4, respectively. Thus, a branch circuit breaker unit can be configured by combining and integrating two branch circuit breakers 10. This branch circuit breaker unit includes an insertion terminal 21b,
By simply inserting 22b into the main bar 5, it can be built into the distribution board. Therefore, there is no need to provide screw holes in the main bar 5, so that the configuration of the main bar 5 is simplified, and wiring work inside the distribution board can be simplified.

Embodiment 2 FIG. 4 is a bottom view showing a part of the inside of a distribution board according to Embodiment 2 of the present invention, and FIG. 5 is an exploded perspective view of a connector. In the first embodiment,
For example, a branch circuit breaker unit that distributes power from a neutral line and a voltage line in a single-phase three-wire circuit in a 100-volt circuit has been described. In the second embodiment, power is distributed in a 200-volt circuit from voltage lines. It is.

In the drawing, 1 is a main circuit breaker, 4 is a small screw, 5 (5a and 5b) is a main bar of a strip conductor, 10 is a branch circuit breaker, and 11 and 12 are power supply sides of the branch circuit breaker 10. The terminals 13, 14 are load-side terminals, and 24 is a clip spring, which are the same as those described in the first embodiment. 25 is a connector of the second embodiment,
As described later, the connection conductors 26 and 27 and the insulating block 28
Etc. That is, 26 is a first T-shaped connection conductor, 27 is a second T-shaped connection conductor, and 28 is an insulating block formed of a synthetic resin material. Insulation block 2
8 has a substantially T-shaped upper groove 28 in two steps from the front and back.
a and the lower groove 28b are provided. This upper groove 28
a, the lower groove 28b is formed from the front and back sides because the wall of the synthetic resin material for molding the insulating block 28 is formed at the intersection of the first T-shaped connection conductor 26 and the second T-shaped connection conductor 27 to improve the insulation performance. This is to ensure. In the first embodiment as well, the T-shaped groove 23a and the L-shaped groove 23b may be separately provided on the front and back of the insulating block 23.

Next, the structure of the connector according to the second embodiment will be described with reference to FIG. The first T-shaped connection conductor 26 is formed by bending an elongated thin copper plate into a T-shape, and both ends of the folded and T-shaped upper side are connection terminal portions 26a. This connection terminal 26a has a branch circuit breaker 1
A terminal hole connected to the power supply side terminal 11 of the No. 0 by a screw 4 is provided. Since the position of the power supply terminal 11 of the branch circuit breaker 10 to be connected is not on the center line of the branch circuit breaker 10, the connection terminal portions 26 a on both sides are centered corresponding to the position of the power supply terminal 11. It is provided at a position shifted from the line. At the end of the T-shaped vertical side, an insertion terminal portion 26b is formed, with both ends of the elongated thin copper plate bifurcated as they are and for holding and connecting the main bar 5.

The second T-shaped connection conductor 27 is similarly formed, and has a connection terminal 27a and a plug-in terminal 27b. A clip spring 24 for holding the contact pressure with the main bar 5 is attached to the insertion terminal portions 26b and 27b. The clip spring 24 is fitted in a concave portion (not shown) provided in the insertion terminal portion 21b so as to be held at a predetermined position. Further, the first T-shaped connection conductor 26 and the second T-shaped connection conductor 27 are fitted into and held by the upper groove 28a and the lower groove 28b of the insulating block 28 from the front and back, respectively. The connector 25 is configured by attaching the insulating block cover 25 described above.

The connection terminals 26a, 27 of the connector 25
a to the power supply side terminals 11 and 12 of the branch circuit breaker 10, respectively.
Is screwed and connected with a small screw 4 so that 2
A branch circuit breaker unit can be configured by combining and integrating the branch circuit breakers 10. This branch circuit breaker unit can be built in the distribution board simply by inserting the insertion terminal portions 26b, 27b into the main trunk bar 5. Therefore, there is no need to provide screw holes in the main bar 5, so that the configuration of the main bar 5 is simplified, and wiring work inside the distribution board can be simplified.

[0020]

As described above, the connection device for a branch circuit breaker according to the present invention is a combination of a connection conductor having a plug terminal connected to the main bar and a connection terminal connected to the branch circuit breaker in an insulating block. A branch circuit breaker unit integrating the three members by screwing and connecting two branch circuit breakers to the connection terminal portion around the connector to form a branch circuit breaker. By simply inserting the unit into the main trunk bar through the insertion terminal, the two branch circuit breakers can be connected to the distribution board at the same time, simplifying the work.

Further, since the connection to the main bar is made by sandwiching the main bar at the insertion terminal portion, the position of the branch circuit breaker unit is not limited in the longitudinal direction of the main bar, and the branch circuit in the distribution board is not limited. There is a degree of freedom in the mounting position of the breaker. The operation can be simplified even if only the connector is inserted into the main bar and the branch circuit breaker is then screwed to the connector.

[Brief description of the drawings]

FIG. 1 is a front layout diagram in a distribution board according to Embodiment 1 of the present invention.

FIG. 2 is a bottom view showing a part of the distribution board of FIG. 1;

FIG. 3 is an exploded perspective view of the connector according to the first embodiment.

FIG. 4 is a bottom view of the inside of a distribution board showing Embodiment 2 of the present invention.

FIG. 5 is an exploded perspective view of the connector according to the second embodiment.

FIG. 6 is a front layout view of a conventional distribution board.

FIG. 7 is a bottom view of the inside of a conventional distribution board.

FIG. 8 is an external perspective view of a branch circuit breaker.

[Explanation of symbols]

5 Main bar, 5a Neutral bar, 5b Voltage bar,
DESCRIPTION OF SYMBOLS 10 Branch circuit breaker, 20 connector, 21 1st connection conductor, 22 2nd connection conductor, 21a, 22a connection terminal part, 21b, 22b insertion terminal part, 23 insulating block, 24 clip spring.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kazuhiro Nakajima 2-6-1, Otemachi, Chiyoda-ku, Tokyo Within Mitsubishi Electric Engineering Co., Ltd. (72) Shintaro Kamiya 2-6-, Otemachi, Chiyoda-ku, Tokyo No.2 Mitsubishi Electric Engineering Co., Ltd. F term (reference) 5G030 AB00 BB03 XX20

Claims (3)

[Claims] 1. A power strip terminal is provided on both sides of a main strip bar composed of a neutral bar and a voltage line bar which are arranged in parallel on a bottom surface side of a distribution board with the strip surface vertical. A first connecting conductor for connecting branch circuit breakers arranged face-to-face and connecting the neutral bar to the power supply side terminals of the branch circuit breakers on both sides is T-shaped. At both ends of the upper side, connection terminal portions for connecting to the power supply side terminals of the branch circuit breaker are provided, and at the tip of the T-shaped vertical side, a plug-in terminal portion to be plugged and connected to the neutral wire bar is formed. The second connection conductor that connects the voltage line bar to the power supply terminal of the one-side branch circuit breaker has an L-shape, and a connection terminal portion that is connected to the power supply terminal at one end thereof is provided.
At the other end of the L-shape, an insertion terminal portion to be inserted and connected to the voltage line bar is formed, so that the first connection conductor and the second connection conductor are insulated by an insulating block and held integrally. A branch circuit breaker connector characterized in that: 2. A single-phase three-wire main bar composed of a neutral bar and a voltage bar arranged in parallel with the band surface being vertical to the bottom side in the distribution board. A branch circuit breaker arranged with the power supply terminals facing each other from both sides is connected, and one voltage line bar of the voltage line bar is connected to the power supply terminals of the branch circuit breakers on both sides. The first connection conductor is formed in a T-shape, and connection terminals for connecting to the power supply terminal are provided at both ends of an upper side thereof, and the first connection conductor is inserted into the one voltage line bar at a tip of a vertical side of the T-shape. A second connection conductor that forms an insertion terminal portion and connects the other voltage line bar in the voltage line bar to the power supply side terminal of the branch circuit breaker on both sides is formed in a T shape, and the second connection conductor is formed at both ends of the upper side thereof. A connection terminal portion for connecting to a power supply terminal is provided, and the T-shaped terminal is provided. An insertion terminal portion which is inserted and connected to the other voltage line bar is formed at the end of the vertical side of the shape, and the first connection conductor and the second connection conductor are insulated by an insulating block and held integrally. A branch circuit breaker connector characterized in that: 3. The first connection conductor and the second connection conductor,
3. The connection of a branch circuit breaker according to claim 1 or 2, wherein the strip-shaped thin-sheet conductor is formed by folding back, and both ends of the strip-shaped thin-sheet conductor are formed as insertion terminal portions. vessel.