JP2006079926A - Terminal stand for breaker and distribution board having a plurality of primary feeding breakers - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal stand for a breaker not reducing a space when a plurality of primary feeding circuits are installed in a board, and easily wired at low cost. <P>SOLUTION: The terminal stand for the breaker 22 connects a power source conductor to a plug-in terminal of the breaker having a means of fixing to a base board. The terminal stand is composed of: a conductor having terminal parts 2222, 2223 connecting power source conductors 23, 24 and bar-shaped end parts 2221, 2231, as well as an insulation frame body holding the conductor and provided with the means of fixing the conductor to the base board. A length of a bar-shaped end part in a protrusion direction from the insulation frame body is made integer times the width of the breakers 20, 20' in a parallel installation direction, and the terminal stand is located so as to contact a long side face of the breaker. The bar-shaped end parts are inserted into and connected to plug-in terminals of the respective breakers, and led out from openings of the long side faces of the breakers. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a means for connecting a power source from other than the distribution bar for a part of the plurality of branch breakers having plug-in terminals connected to the distribution bar, in particular, the main breaker and the plurality of branch breakers. The present invention relates to means for supplying power from a primary side of the main breaker to a plurality of branch breakers of a distribution board provided.

The distribution board has a structure in which a branching copper bar is arranged on the secondary side of the main breaker, a plurality of branch breakers are connected to the branching copper bar, and electricity is supplied from the branch breaker to the load device. When a safety breaker such as a fire alarm is connected as a load device, if the main breaker is cut off due to overload or leakage, the power supply voltage is stopped and the monitoring device does not work. There is. For this reason, for such monitoring equipment, primary feed wiring is performed so that power is supplied (primary feed) from the primary side of the main breaker via the dedicated branch breaker, and even if the main breaker breaks, the safety monitoring equipment The power supply voltage is continuously supplied.
In addition to the fire alarm, when installing a load device that does not want to stop the power supply even if the guide light or other main breaker is turned off, supply the power through the primary feed wiring. To do. In this case, it is preferable to provide a circuit for supplying power to each device separately. That is, a dedicated primary feed branch breaker is provided for each wiring.

Conventionally, as a primary feed wiring technique, as shown in FIG. 10 (FIG. 1 of Patent Document 1), there is a fixing means to a substrate and a plug-in terminal, and a conductor is connected to the plug-in terminal. A terminal block for connecting a power supply conductor to a plug-in terminal of a breaker having an opening, the opening being continuously open from a short side surface to a long side surface, the terminal block having a terminal portion for connecting the power supply conductor; A conductor having a bar-like end connected to the plug-in terminal, an insulating frame having a means for holding the conductor and fixing to the substrate, the terminal block being positioned in contact with the long side surface of the breaker In addition, the breaker terminal block is provided, wherein the bar-shaped end portion of the conductor is inserted and connected to the plug-in terminal and is led out from the opening on the long side surface of the breaker. Breaker and main branch A distribution board comprising a distribution bar connected to the secondary side of the broker, and a plurality of branch breakers including a plug-in terminal connected to the distribution bar and fixed side by side so that the long side faces are adjacent to each other 1, the branch breaker located at the side end of the plurality of branch breakers is replaced with the breaker terminal block, and the terminal portion of the terminal block and the primary side of the main breaker are connected by a power supply conductor. There was a distribution board with a next-feed breaker.

In this distribution board, when two primary feed circuits are to be provided, as shown in FIG. 11 (FIG. 5 of Patent Document 1), a branch provided up and down across the distribution bar. Of the breakers, breakers 20 and 20 'and terminal blocks 22 and 22' are attached instead of branch breakers located at the side end of the main breaker side, and the primary terminals of the main breaker 1 are attached to the terminal blocks 22 and 22 '. 103 is provided so as to supply voltage, and two primary feed breakers are provided at the side end of the branch breaker.

JP 2003-289604 A (FIG. 1)

However, when multiple primary feed circuits are provided, it is necessary to replace the breakers located at the side edges of the upper and lower branch breakers with the distribution bar between them and to attach terminal blocks to each of them. In addition, there is a problem that the space in the panel is reduced and wiring work becomes complicated, and more than one terminal block is required, which causes an increase in cost.

In addition, there is a problem that it is necessary to carry out the wire routing work from the main circuit breaker by the number of terminal blocks, and the wiring work for the primary feed is time-consuming.

Furthermore, since the wiring from the main breaker to the terminal block located below the distribution bar is arranged so as to straddle the distribution bar, it is necessary to work with sufficient insulation. There was a problem of difficulty in sex.

Therefore, according to the present invention, when a plurality of primary feed circuits are provided in the panel, the space in the panel is provided as in the case of providing a single primary feed circuit while minimizing cost increase. To provide a breaker terminal block and a distribution board with a plurality of primary feed breakers that can be provided with a plurality of primary feed circuits that do not impose any work space and can easily perform wiring work. It is said.

In order to solve the above-described problems, the first problem-solving means includes a fixing means for the substrate and a plug-in terminal, and an opening for connecting a conductor to the plug-in terminal. Is a terminal block that connects the power conductor to the plug-in terminal of the breaker that opens continuously from the short side to the long side,
The terminal block comprises a conductor having a terminal part for connecting a power supply conductor and a bar-shaped end part connected to the plug-in terminal, an insulating frame having a means for holding the conductor and fixing to the substrate,
The length in the protruding direction of the bar-shaped end portion from the insulating frame is provided to be an integral multiple of the width in the direction in which the breakers are juxtaposed,
The terminal block is positioned in contact with the long side surface of the breaker, and the bar-shaped end of the conductor is in relation to the number of breakers corresponding to the length of the bar-shaped end in the protruding direction from the insulating frame. A breaker terminal block is provided by being inserted into and connected to a plug-in terminal of each breaker and led out from an opening on a long side surface of the breaker.
As a result, the length in the protruding direction from the insulating frame of the bar-shaped end connected to the plug-in terminal of the breaker is set to be an integral multiple of the width in the parallel arrangement direction of the breakers. , Without changing from the case where only one primary feed circuit is provided, a plurality of predetermined breakers can be used as breakers for the primary feed circuit,
In terms of cost increase, the bar-shaped end portion extended by a predetermined length is equivalent, and the cost increase is slight and minimal. Therefore, multiple circuits can be sent to the primary circuit without complicated wiring work and cost increase factors. It is possible to provide a breaker terminal block that can be formed into a circuit.

In the second problem solving means, the board includes a board, a main breaker, a distribution bar connected to the secondary side of the main breaker, and a plug-in terminal connected to the distribution bar. In a distribution board with multiple branch breakers fixed side by side to fit,
The number of breakers corresponding to the length of the bar-shaped end portion protruding from the insulating frame described in the first problem solving means is counted from the branch breakers located at the side end portions of the plurality of branch breakers. Connecting the bar-shaped ends and providing a terminal block,
A distribution board with a plurality of primary feed breakers is provided, wherein the terminal portion of the terminal block and the primary side of the main breaker are connected by a power supply conductor.
As a result, when a plurality of primary feed circuits are provided, only one terminal block is required, the wiring work is not complicated, the wiring work for the primary feed is not troublesome, and the wiring straddling the distribution bar is not required. This eliminates the need for wiring work.

According to the present invention, the length in the protruding direction of the bar-shaped end portion connecting the terminal block used for the primary feed circuit to the plug-in terminal of the breaker from the insulating frame is an integral multiple of the width in the parallel arrangement direction of the breakers. Since the terminal block is provided with a distribution board, the terminal block is connected to the primary side of the main breaker with a power conductor, and the distribution board is provided with the primary feed circuit. When the primary feed circuit is provided in the panel, the space in the panel is provided as much as in the case of providing a single primary feed circuit while minimizing the cost increase, and the work space in the panel is not compressed. In addition, it is possible to provide a breaker terminal block and a distribution board with a plurality of primary feed breakers that can be provided with a plurality of primary feed circuits so that wiring work can be easily performed.

Next, an embodiment of a residential distribution board according to the present invention will be described with reference to the drawings.

Hereinafter, the present invention will be described in detail with reference to the drawings. 1 to 4 are explanatory diagrams of a distribution board in which the power supply terminal of the branch breaker is a plug-in type and does not have a branch breaker dedicated to primary feed. In FIG. 1, 1 is a main breaker, 2 and 3 are branch breaker arrangement parts, and a plurality of branch breakers are arranged in two rows. In the figure, 4 on the 2 side and 4 on the 3 side, 8 in total. Has a branch breaker. In the main breaker and the plurality of branch breakers, the secondary terminal 102 of the main breaker and the power supply side terminals of the plurality of branch breakers are electrically connected by the distribution bars 9 and 4. Further, the branch breakers on the 2 side and the 3 side are opposed to each other with the distribution bar interposed therebetween. 5 and 6 are the voltage switching devices for the branch breaker located on the top and bottom of the leftmost side of the figure, 5 is the voltage switching device for the upper 7 branch breaker, 6 is the voltage switching device for the lower 8 branch breaker, and is supplied to each branch breaker The voltage is switched between a single-phase three-wire system of 100V and 200V.

FIG. 2 is a detailed view of the main breaker, branch breaker, and distribution bar portion of FIG. 1, and FIG. 3 shows an exploded structure of the distribution bar including the 100V 200V voltage switching means. In FIG. 3, 11 to 13 are main conductors, 11 is a single-phase three-wire L1 pole, 12 is an N pole, and 13 is an L2 pole, which are connected to the secondary side of the main breaker 1. The 12 N-pole main conductors are provided with U-shaped notches as many as the number of branch breakers, such as 1201, and the 11 and 13 main conductors are provided with U-shaped notches 1101 and 1301 and connecting portions. 1102 and 1302 are provided by the number of branch breakers in one row. 501 and 601 are switching screws, 502 and 602 are connection plates, 503 and 603 are switching connectors, 504 and 604 are female screw members, 501 to 504, 1101, and 1201, 5 voltage switching devices, 601 to 604, 1202 , 1301 constitute six voltage switching devices.

Reference numeral 10 in FIG. 4 denotes an insulating frame that insulates between the voltage switching devices, and the interior is divided into a number of sections corresponding to the number of voltage switching devices, and each section is connected to a connection breaker and a main conductor branch breaker. Notched window portions 1001 and 1002 are provided to extend the portion.

The voltage switching device of FIG. 3 is combined as follows. The screw 501 passes through the elongated hole portion of the connection plate 502 and the switching connector 503 and is screwed to the female screw member 504. The U-shaped notch 1101 or 1201 is sandwiched between the female screw member 504 and the switching connector 503. Screwed on. The U-shaped notches 1101 and 1201 are arranged so that the U-shaped open portions face each other. When the screw 501 is loosened, the screw 501, the switching connector 503, and the female screw member 504 are connected to the connection plate. It is configured so that it can move between the U-shaped notches 1101 and 1201 by moving in the elongated hole 502.

In FIG. 3, the distribution bar and the branch breaker are elastically connected by inserting the power source side plug-in terminals 801 and 802 of the branch breaker 8 into the connection plate 602 and the connection portion 1102 extending from the insulating frame 10. . In this state, when the screw 601 is brought close to the branch breaker 8 in the elongated hole of the connection plate 602 and tightened, the connection plate 602 is electrically connected to the N pole, and the branch breaker 8 is single-phase 3 When the wire type N pole and L2 pole are connected, a voltage of 100 V is supplied to the branch breaker 8, and when the screw is moved to a position far from the branch breaker 8 in the elongated hole and the screw is tightened, the connection plate 602 is connected to the L1 pole. Electrically connected, the branch breaker 8 is connected to the single-phase three-wire L1 pole and L2 pole, and a voltage of 200 V is supplied to the branch breaker 8. Similarly, the branch breaker 7 installed facing each other can also switch the supply voltage by the voltage switching device 5.

5 and 6 are explanatory diagrams of the breaker terminal block of the present invention. In FIG. 5, 20 and 20 'are breakers, 21 is a substrate, 22 is a terminal block, and 23 and 24 are power supply conductors. The breaker 20 has a not-shown mating recess on the mounting surface with respect to the substrate 21, and the mating protrusion 211 of the substrate 21 mates with the mating recess, and a not-shown claw with respect to the groove 212 of the substrate 21 Projecting from the substrate 21 and fixed to the substrate 21. The short side surface 201 of the breaker 20 has plug-in terminal openings 2051 and 2061, and the openings have continuous openings 2052 and 2062 on the long side surface 202 side.

22 is a terminal block, which comprises terminal portions 2222 and 2232, conductors 222 and 223 having bar-shaped end portions 2221 and 2231, and an insulating frame 221 as shown in FIG. The bar-shaped end portions 2221 and 2231 and the terminal portions 2222 and 2232 are assembled as shown in FIG. In this case, the bar-shaped end portions 2221 and 2231 are provided with a length twice as long as an integral multiple of the width of the branch breakers in the juxtaposed direction. The bar-shaped end portions 2221 and 2231 are inserted from the plug-in terminal openings 2051 and 2061 of the short side surface 201 of the breaker 20 and connected to the plug-in terminals, and are accommodated in the openings 2052 and 2062, and the insulating frame body has a long side surface. It is positioned in contact with 202, and is fixed to the hole 213 of the substrate 21 with a screw 25 through the hole 2211 of the insulating frame. The same applies to the breaker 20 '. Thereafter, the power supply conductors 23 and 24 are connected to the terminal portions 2222 and 2232, and the breakers 20 and 20 ′ are supplied with voltage from the power supply conductors 23 and 24.

FIG. 7 is a diagram of a branch breaker, a substrate, and a distribution bar portion when the terminal block 22 and the breaker 20 shown in FIG. 5 are mounted on a distribution board, and is connected to the distribution bar 4 and the distribution bar 4. A plurality of branch breakers 31 to 37 are attached to the substrate 21, and the upper breaker among the breakers disposed to be opposed to the top and bottom of the distribution bar is counted from the side end of the branch breakers 31 to 33. Second and second breakers 20 and 20 'and a terminal block 22 are attached. In addition, the connection part for connecting to the breakers 20 and 20 'of the conductive bar 4 is cut in advance.

FIG. 8 is a conceptual diagram in which the main breaker 1 is further attached to the distribution bar and the plurality of branch breakers shown in FIG. 7 and configured as a distribution board. The branch breakers 31 to 37 are connected to the secondary side terminal 102 of the main breaker 1. A voltage is supplied from the connected distribution bar 4, and the breakers 20 and 20 ′ are configured to supply a voltage from the primary side terminal 103 of the main breaker 1 through the power supply conductors 23 and 24 connected to the terminal block 22. Yes.

When the number of loads using the primary feed is increased from 2 to 3 or 4, and so on, as shown in FIG. 9, the bar-shaped end protrudes from the insulating frame. The terminal block is composed of a conductive bar whose length in the direction is 3 or 4 times the integral multiple of the width in the direction in which the breakers are juxtaposed, and a distribution board using this terminal block A distribution board with an increased number of primary feed circuits can be configured easily.

As described above, the length in the protruding direction from the insulating frame of the bar-shaped end connecting the terminal block used for the primary feed circuit to the plug-in terminal of the breaker is provided as an integral multiple of the width in the parallel arrangement direction of the breakers. The terminal block is provided with a distribution board, and the distribution board is provided with a primary feed circuit by connecting the terminal part of the terminal block and the primary side of the main breaker with a power supply conductor. When the primary feed circuit is provided in the panel, the space in the panel is provided as same as the case where a single primary feed circuit is provided, while minimizing the cost increase, and the work space in the panel is not compressed. Moreover, it is possible to provide a breaker terminal block and a distribution board with a plurality of primary feed breakers that can be provided with a plurality of primary feed circuits so that wiring work can be easily performed.

According to the present invention, since it is possible to arrange a primary feed switch in a space-saving manner along the branch switch, not only a residential distribution board but also a series of branch switches. By applying the present invention to an industrial control panel or the like in which a plurality of switch groups are provided in the panel, there is a possibility that a panel having a primary feed switch can be provided in a more space-saving manner.

A conceptual diagram of a distribution board without primary feed. The figure of the distribution breaker of the distribution board without primary feed, a distribution bar, a board | substrate, and a main breaker. FIG. 8 is an exploded explanatory view of only the conductive part of the distribution bar shown in FIG. 7. The insulation frame of the electricity distribution bar shown in FIG. Explanatory drawing of the terminal block for breakers and breaker of this invention. The disassembled perspective view of the terminal block for circuit breakers. An embodiment in which the breaker terminal block and breaker of the present invention are incorporated in a branch circuit unit of a distribution board. The conceptual diagram of the distribution board with a primary feed breaker which uses the terminal block for circuit breakers of this invention. The figure which shows another Example. The conceptual diagram of the distribution board with the conventional primary feed breaker. The conceptual diagram of the distribution board with the conventional primary feed breaker.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main breaker 2 Cover 3 Box 11 L1 pole of main conductor 12 N pole 13 of main conductor L2 pole 1101 of main conductor U-shaped notch part 1301 U-shaped notch part 1102 Connection part 1302 Connection part 5 Voltage switching device 501 Switching screw 502 connecting plate 503 switching connector 504 female screw member 6 voltage switching device 601 switching screw 602 connecting plate 603 switching connector 604 female screw member 7 branch breaker 8 branch breaker 10 insulating frame 20 branch switch 20 'branch switch 21 board 22 terminal Base 23 Power supply conductor 24 Power supply conductor 212 Groove 213 Hole 201 Short side 2051 Opening 2052 Opening 2061 Opening 2062 Opening 202 Long side 2222 Terminal 2223 Terminal 2221 Bar-shaped end 2231 Bar-shaped end 221 Insulating frame 222 Conductor 223 Conductor 25 Screw 801 Power supply side plastic In terminal 802 power supply side plug-in terminal

Claims (2)

A breaker plug-in terminal having a means for fixing to a substrate and a plug-in terminal, and having an opening for connecting a conductor to the plug-in terminal, the opening continuously opening from a short side surface to a long side surface A terminal block for connecting a power conductor,
The terminal block comprises a conductor having a terminal part for connecting a power supply conductor and a bar-shaped end part connected to the plug-in terminal, an insulating frame having a means for holding the conductor and fixing to the substrate,
The length in the protruding direction of the bar-shaped end portion from the insulating frame is provided to be an integral multiple of the width in the direction in which the breakers are juxtaposed,
The terminal block is positioned in contact with the long side surface of the breaker, and the bar-shaped end of the conductor is in relation to the number of breakers corresponding to the length of the bar-shaped end in the protruding direction from the insulating frame. A breaker terminal block which is inserted into and connected to a plug-in terminal of each breaker and is led out from an opening on a long side surface of the breaker. A plurality of boards, a main circuit breaker, a distribution bar connected to the secondary side of the main circuit breaker, and a plug-in terminal connected to the distribution bar; In distribution boards with branch breakers,
The number of breakers corresponding to the number of breakers corresponding to the length in the protruding direction from the insulating frame of the bar-like end portion according to claim 1, counted from the branch breakers located at the side end portions of the plurality of branch breakers. Connect the ends and provide a terminal block,
A distribution board with a plurality of primary feed breakers, wherein the terminal portion of the terminal block and the primary side of the main breaker are connected by a power supply conductor.

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