JP2013183581A - Distribution board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distribution board which can facilitate the downsizing as well as wiring connection using a printed-circuit board.SOLUTION: A distribution board has an electric conduction bar 13, and a printed-circuit board 40 is arranged on the electric conduction bar 13. A branch breaker 14 has a current detection means 25 for outputting a detection signal in accordance with load current. A plurality of branch breakers 14 are disposed parallel along both sides of the electric conduction bar 13 and electrically connected to the electric conduction bar 13, and the current detection means 25 of each branch breaker 14 is electrically connected to the printed-circuit board 40. A measurement unit 15 is disposed parallel to the plurality of branch breakers 14 in one side of the electric conduction bar 13 and electrically connected to the printed-circuit board 40. The measurement unit 15 acquires a detection signal outputted by the current detection means 25 of the plurality of branch breakers 14 through the printed-circuit board 40.

Description

  Embodiments described herein relate generally to a distribution board that supports measurement of power consumption.

  Conventionally, in a residential distribution board, a conductive bar is connected to the main breaker, and a plurality of branch breakers are arranged side by side along both sides of the conductive bar and are electrically connected to the conductive bar.

  In such a distribution board, there is one that can measure the power consumption for each load connected to each branch breaker and the power consumption of the entire house.

  This distribution board uses a sensor board provided with a plurality of current sensors for a plurality of branch breakers and a plurality of processing circuits for transmitting detection signals detected by the respective current sensors to the measurement unit in two lines. The sensor substrate is incorporated in the conductive bar. Then, the current sensor detects the load current flowing from the conductive bar to each branch breaker, processes the detection signal with the processing circuit, transmits it to the measurement unit with two wires, and determines which current sensor from the measurement unit is the detection signal. It is specified and processed.

  However, there are problems such as the influence of insulation and noise in order to incorporate the sensor board into the conductive bar, a processing circuit for transmitting the detection signal to the measurement unit with two wires, and a power supply circuit for supplying control power to the processing circuit There is a problem that the configuration is complicated.

  There is also a distribution board using a branch breaker with a built-in current sensor. In this distribution board, a printed wiring board is arranged between the base of the distribution board and a metal mounting plate to which a plurality of branch breakers are attached, and the current sensor and measuring unit of each branch breaker are electrically connected by the printed wiring board. To make connections. In this distribution board, by using the printed wiring board, the wiring connection between the current sensor of the branch breaker and the measurement unit can be facilitated.

Japanese Patent No. 4737050 JP 2009-207237 A

  As described above, when a printed wiring board is used, wiring connection can be facilitated. However, since the printed wiring board is disposed between the base and the metal mounting plate, the printed wiring board and the metal mounting plate are used. It is necessary to secure an insulation distance between the two. Therefore, it is necessary to widen the gap between the base and the metal mounting plate, and the distribution board becomes large.

  The problem to be solved by the present invention is to provide a distribution board that can facilitate wiring connection and can be miniaturized using a printed wiring board.

  The distribution board of the embodiment includes a conductive bar, and a printed wiring board is disposed on the conductive bar. The branch breaker has current detection means for outputting a detection signal corresponding to the load current. A plurality of branch breakers are juxtaposed along both sides of the conductive bar and are electrically connected to the conductive bar, and the current detection means of each branch breaker is electrically connected to the printed wiring board. A measuring unit is juxtaposed with a plurality of branch breakers on one side of the conductive bar and electrically connected to the printed wiring board. A measurement unit acquires the detection signal which the current detection means of a some branch breaker outputs through a printed wiring board.

  According to the present invention, since the printed circuit board for electrically connecting the current detection means of the branch breaker and the measurement unit is disposed by effectively using the space on the conductive bar, the wiring connection is performed using the printed circuit board. Can be made easier and smaller.

It is a perspective view of an equipment unit of a distribution board showing a 1st embodiment. It is a front view of a distribution board same as the above. It is a perspective view of the electroconductive bar part of a distribution board same as the above. It is a perspective view of the branch breaker of a distribution board same as the above. It is explanatory drawing which shows schematic structure of the printed wiring board of a distribution board same as the above. It is a perspective view of the electroconductive bar part of the electricity distribution panel which shows 2nd Embodiment. It is a perspective view of the branch breaker of a distribution board same as the above.

  Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 5.

  As shown in FIG. 2, the distribution board 10 has a distribution board main body 11 installed on a wall surface. In the distribution board main body 11, a main breaker 12, a conductive bar 13, a plurality of branch breakers 14, A measurement unit 15 and a wiring unit 16 are disposed. A device unit 17 is formed by the conductive bar 13, the plurality of branch breakers 14, the measurement unit 15, the wiring unit 16, and the like.

  The distribution board main body 11 has a base (not shown) installed on the wall surface and a front cover 11a detachably attached to the front surface of the base.

  As shown in FIG. 1, the device unit 17 has a mounting plate 20 that is attached to the base of the distribution board body 11, and a conductive bar 13, a plurality of branch breakers 14, a measuring unit 15, and wiring on the mounting plate 20. Unit 16 etc. are attached. A plurality of branch breaker mounting portions 21 for mounting a plurality of branch breakers 14 are juxtaposed on the mounting plate 20 along two vertical positions on both sides of the conductive bar 13 when the distribution board 10 is viewed from the front. Has been. Of the branch breaker mounting portion 21 of the mounting plate 20, a branch breaker mounting portion 21 to which the branch breaker 14 is not mounted is mounted with a dummy part 22 having the same outer shape and mounting structure as the branch breaker 14.

  The conductive bar 13 electrically connects the main breaker 12 and the plurality of branch breakers 14, and as shown in FIGS. 1 and 3, for example, a first conductive bar 13a for a neutral electrode, A second conductive bar 13b and a third conductive bar 13c for a pair of voltage electrodes are provided. These conductive bars 13a, 13b, and 13c are each formed in a flat plate shape, and are fixed on the mounting plate 20 by an insulating support (not shown) in a state of being opposed to each other in parallel and overlapping each other. The conductive bars 13a, 13b, 13c overlap in the front-rear direction when viewed from the front surface of the distribution board 10 and are horizontally disposed along the left-right direction of the distribution board 10.

  Further, as shown in FIGS. 1 and 2, the plurality of branch breakers 14 are positioned on both sides of the conductive bar 13 and are mounted on the mounting plate 20 with the directions opposite to each other in two upper and lower stages when the distribution board 10 is viewed from the front. It is mounted on and electrically connected to the conductive bar 13.

  As shown in FIGS. 1, 3, and 4, the branch breaker 14 includes a case 24, a circuit interruption unit (not shown) disposed in the case 24, and current detection means 25, and further includes current detection means. A detection signal output unit 26 that outputs 25 detection signals is provided.

  The case 24 is made of an insulating synthetic resin and has a narrow width when viewed from the front surface of the case 24 and is elongated in the vertical direction. A breaker handle 27 for manually operating the circuit breaker unit is disposed on the front side of the case 24, and a power supply side connection portion 28 connected to the conductive bar 13 on one end side in the longitudinal direction when viewed from the front side of the case 24. And a load side connection portion 29 is formed on the other end side.

  The power supply side connection portion 28 is formed with first to third groove portions 30a, 30b, 30c into which the conductive bars 13 are inserted. When the load side connected to the branch breaker 14 is 100V specification, the power supply side terminals electrically connected to the first and second conductive bars 13a and 13b are the first groove portion 30a and the second groove portion 30b. Respectively. When the load side is 200V specification, the power supply side terminals electrically connected to the second and third conductive bars 13b and 13c are arranged in the second groove portion 30b and the third groove portion 30c, respectively.

  The load side connection portion 28 is formed with a pair of insertion holes 31 into which electric wires connected to the load side are inserted, and a pair of locking terminals that prevent the electric wires inserted into the insertion holes 31 from being disconnected in an electrically connected state. Is arranged.

  The circuit breaker unit can open and close the connection circuit between the power supply side terminal of the power supply side connection section 28 and the lock terminal of the load side connection section 29, and opens and closes the connection circuit according to the operation of the breaker handle 27. In addition, the connection circuit is automatically opened when an overcurrent exceeding a set value flows in the closed state of the connection circuit.

  The current detection means 25 is constituted by a CT (Current Transformer) having a core and a detection coil combined with the core. A conductor connecting the power supply side terminal of the power supply side connection unit 28 and the circuit breaking unit is inserted into the core, and the detection coil is electrically connected to the detection signal output unit 26. When a load current flows through the conductor, a detection signal corresponding to the load current is induced in the detection coil, and this detection signal is transmitted to the detection signal output unit 26.

  The detection signal output unit 26 is disposed at one end side in the longitudinal direction when viewed from the front surface of the case 24 and at a position closer to the front surface side of the case 24 than the position of the power supply side connection portion 28. The detection signal output unit 26 has a pair of terminals 33 formed of leaf springs to which both ends of the detection coil are electrically connected. The pair of terminals 33 includes a base end portion 33 a disposed on the front surface side of the case 24 and a distal end portion 33 b disposed on a surface on one end side of the case 24. The proximal end portion 33a is fixed to the case 24, and the distal end portion 33b has a spring property in a direction protruding from the one end side surface of the case 24.

  As shown in FIGS. 1 and 2, the measuring unit 15 is mounted on the mounting plate 20 along with the branch breaker 14 on one side of the conductive bar 13. A branch breaker mounting portion 21 is used for mounting the measurement unit 15 on the mounting plate 20. Further, like the branch breaker 14, it is electrically connected to the conductive bar 13, and power is supplied to the measuring unit 15. A pair of cables 37 having a connector 36 electrically connected to the wiring unit 16 is led out from the measurement unit 15.

  Then, the measurement unit 15 acquires and processes the detection signal output from the current detection means 25 of each branch breaker 14 through the wiring unit 16, and uses the power consumption for each load connected to each branch breaker 14 or the house The total amount of electricity used is measured, and the measurement result is output to a display device or personal computer installed outside via a wired or wireless communication medium.

  As shown in FIGS. 1 and 3, the wiring unit 16 includes a pair of printed wiring boards 40 and an insulator 41 that supports the pair of printed wiring boards 40 on the conductive bar 13 in an insulated state. . The printed wiring board 40 is vertically arranged on the conductive bar 13 by the insulator 41 so as to face the plurality of branch breakers 14 arranged in parallel along both sides of the conductive bar 13, that is, the front surface of the conductive bar 13 It is arranged perpendicular to.

  The printed wiring board 40 has an insulating substrate 42 formed in an elongated rectangle corresponding to the region of the measuring unit 15 from the plurality of branch breakers 14 connected to the conductive bar 13, and a wiring pattern is formed on one surface of the insulating substrate 42. A wiring pattern surface 44 on which 43 is formed is formed. As shown in FIG. 5 (FIG. 5 shows a schematic structure of the printed wiring board 40), the wiring pattern surface 44 has a pair of terminals 33 at positions facing the pair of terminals 33 of the plurality of branch breakers 14. Each pair of terminal portions 45 to be electrically connected is formed, a connector 46 is connected to a position facing the measurement unit 15, and each terminal portion 45 and the connector 46 are electrically connected by each wiring pattern 43. ing. A connector 46 is connected to the wiring pattern 43 and mounted on the printed wiring board 40 on one side where the wiring pattern surface 44 faces the measurement unit 15, and the wiring pattern surface 44 is opposite to the measurement unit 15. A connector 46 is connected to the wiring pattern 43 by wiring on the printed wiring board 40 on the other side, and the connection direction of the connector 46 is directed to the measurement unit 15 side.

  As shown in FIGS. 1 and 3, the insulator 41 is formed of an insulating material such as synthetic resin and has a mounting portion 48 disposed on the conductive bar 13, and the mounting portion 48 is the conductive bar 13 or the conductive bar 13. The conductive bar 13 is attached to an insulating support that attaches to the mounting plate 20. On both sides of the insulator 41, there are formed holding portions 49 for vertically positioning the printed wiring board 40 on the conductive bar 13, and the opposite side of the printed wiring board 40 with respect to the wiring pattern surface 44 is formed. A pressing wall portion 50 is formed.

  A cover 51 that integrally covers the conductive bar 13, the terminals 33 of the branch breakers 14 on both sides, the wiring unit 16, and the like is detachably attached to the insulator 41 and the like.

  Then, when assembling the distribution board 10, to assemble the branch breaker 14 to the mounting plate 20 and the conductive bar 13, the branch breaker 14 is positioned on the side of the conductive bar 13 on the branch breaker mounting portion 21 of the mounting plate 20. After the arrangement, the branch breaker 14 can be attached to the branch breaker mounting portion 21 by sliding the branch breaker 14 toward the conductive bar 13. Along with this mounting operation, each conductive bar 13 is inserted into each groove 30a, 30b, 30c, and any two conductive bars 13 and two power supply side terminals are electrically connected. Further, as shown in FIG. 3, the tip portions 33 b of the pair of terminals 33 are pressed against and electrically connected to the terminal portions 45 of the printed wiring board 40. When the tip 33b of the terminal 33 is pressed against the terminal 45 of the printed wiring board 40, the tip 33b of the terminal 33 is elastically deformed, and the repulsive force causes the tip 33b of the terminal 33 to be the terminal of the printed wiring board 40. Pressed to 45.

  In order to assemble the measurement unit 15, the connector 36 of each cable 37 is connected to the connector 46 of each printed wiring board 40 after being assembled to the mounting plate 20 and the conductive bar 13 in the same manner as the branch breaker 14.

  In the state of use after the distribution board 10 is installed, power is used on the load side connected to the branch breaker 14, and when a load current flows, a detection signal corresponding to the load current is induced in the current detection means 25. Then, this detection signal is transmitted from the detection signal output unit 26 to the wiring pattern 43 of the printed wiring board 40 and also transmitted to the measurement unit 15 through the printed wiring board 40.

  The measurement unit 15 individually acquires detection signals detected by the current detection means 25 of each branch breaker 14, and measures the power consumption for each load connected to each branch breaker 14 and the electricity usage of the entire house. Then, the measurement result is output to a display device or personal computer installed outside by a wired or wireless communication medium.

  In the distribution board 10 configured in this way, the printed wiring board 40 that electrically connects the current detection means 25 of the branch breaker 14 and the measurement unit 15 is disposed on the conductive bar 13, so that the conventional Thus, the distance between the base of the distribution board body 11 and the mounting plate 20 can be reduced compared to the case where it is arranged between the base of the distribution board body 11 and the mounting plate 20, and the distribution board 10 can be made smaller. (Thinning).

  In addition, the space on the conductive bar 13 was used only to arrange the cover structure covering the conductive bar 13, but the printed wiring board 40 should be arranged by effectively using the space on the conductive bar 13. Therefore, it is possible to prevent the distribution board 10 from becoming large.

  Therefore, according to the distribution board 10 of the present embodiment, the printed wiring board 40 that electrically connects the current detection means 25 of the branch breaker 14 and the measurement unit 15 by effectively using the space on the conductive bar 13 is provided. Therefore, the printed wiring board 40 can be used for easy wiring connection and downsizing.

  Further, since the pair of printed wiring boards 40 are vertically arranged on the conductive bar 13 so as to face the plurality of branch breakers 14 arranged in parallel along both sides of the conductive bar 13, the branch breaker 14 is electrically conductive. The direction in which the bar 13 is connected and the direction in which the terminal 33 is pressed against the printed wiring board 40 are the same direction, and the electrical connection between the terminal 33 and the printed wiring board 40 can be stabilized.

  Moreover, since the terminals 33 of the branch breakers 14 on both sides connected to both sides of the conductive bar 13 are pressed against the printed wiring board 40 on both sides, the direction in which the printed wiring board 40 is pushed as if pushed from one side Therefore, the electrical connection between the terminal 33 and the printed wiring board 40 can be stabilized.

  Next, FIGS. 6 and 7 show a second embodiment. In addition, about the same structure as 1st Embodiment, the description is abbreviate | omitted using the same code | symbol.

  In the second embodiment, only one printed wiring board 40 is used, and this printed wiring board 40 is disposed in parallel with the conductive bar 13 by the insulator 41. In this case, the surface of the printed wiring board 40 facing the conductive bar 13 is a wiring pattern surface 44, and terminal portions 45 are provided in the vicinity of both side edges of the wiring pattern surface 44. The insulator 41 supports the printed wiring board 40 at a position slightly higher than the position of the upper surface of the branch breaker 14 connected to the conductive bar 13.

  The branch breaker 14 has a dowel-shaped contact portion 33 c protruding from the upper surface of the base end portion 33 a of the terminal 33 as the detection signal output portion 26.

  When the distribution board 10 is assembled, when the power supply side connection portion 28 of the branch breaker 14 is connected to the conductive bar 13, the terminal 33 of the branch breaker 14 enters the lower side of the printed wiring board 40, and the terminal The contact portions 33c of 33 are pressed against the terminal portions 45 of the printed wiring board 40 to be electrically connected.

  In this case, by connecting the branch breakers 14 to both sides of the conductive bar 13, the contact pressure between the terminal portions 45 on both sides of the printed wiring board 40 and the contact portions 33c of the branch breakers 14 on both sides is equalized. The electrical connection between 40 and the contact portion 33c of each branch breaker 14 can be stabilized.

  Further, it is only necessary to use one printed wiring board 40, and the configuration can be simplified. Moreover, by arranging the printed wiring board 40 in parallel with the conductive bar 13, the height dimension at which the printed wiring board 40 protrudes to the front side of the conductive bar 13 and the branch breaker 14 is suppressed, and the size (thinning) is reduced. it can.

  Note that the electrical connection between the branch breaker 14 and the printed wiring board 40 may be a connector or any connection structure.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 Distribution board
13 Conductive bar
14 Branch breaker
15 Measuring unit
25 Current detection means
40 Printed circuit board

Claims (3)

A conductive bar;
A printed wiring board disposed on a conductive bar;
It has current detection means that outputs a detection signal corresponding to the load current, and is arranged in parallel along both sides of the conductive bar and is electrically connected to the conductive bar, and the current detection means is electrically connected to the printed wiring board A plurality of branch breakers arranged;
A measurement unit that is arranged in parallel with a plurality of branch breakers on one side of the conductive bar and is electrically connected to the printed wiring board, and obtains a detection signal output from the current detection means of the plurality of branch breakers through the printed wiring board;
A distribution board characterized by comprising: The printed wiring board has a pair, and is arranged vertically on the conductive bar so as to face a plurality of branch breakers arranged side by side along both sides of the conductive bar. The distribution board described. The distribution board according to claim 1, wherein the printed wiring board is disposed in parallel with the conductive bar.

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