JP2008154423A - Conductive bar structure of electrical distribution panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conductive bar structure of an electrical distribution panel, which has a simple structure and can easily be constructed. <P>SOLUTION: A tabular conductive bar is arranged on an uppermost stage. Conductive bars installed in a middle stage and a lower stage form a vertical part in an almost center of a plate member in an almost U shape. Upper/lower end parts of the vertical part are folded in opposite sides. When incorporating the bars into the electrical distribution panel, two conductive bars are combined as a set and the conductive bars arranged on the right and left of the middle and lower stages are made to have different phases. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a conductive bar structure of a distribution board in which circuit breakers having plug-in terminals are connected to both sides of a conductive bar of a single-phase three-wire circuit.

  Conventionally, as shown in FIG. 3, the conductive bars incorporated in the distribution board are arranged from the top in the order of the N phase 31, the L1 phase 32, and the L2 phase 33, and the circuit breaker has the plug-in terminals 34 on both sides of the conductive bar. Device 35 was connected. The plug-in terminal 34 is formed by providing a terminal in a concave portion arranged on the side surface of the circuit breaker 35. When three conductive bars are used at 100 V, if the same type of circuit breaker 35 is connected, since terminals are provided at the same position, all of them are connected to the same phase conductive bar. The operator had to select and install the circuit breaker 35 in consideration of the balance between the phases, and the work was troublesome.

And the branch part structure as described in patent document 2 came to be used so that a circuit breaker might be assembled | attached with sufficient balance without trouble.
JP-A-10-241543 JP 2002-84609 A

  However, as shown in FIGS. 4 to 5, the branch structure described in Patent Document 2 is complicated and has a drawback of increasing the manufacturing cost. In addition, since the portion of the conductive bar connected to the terminal portion of the circuit breaker is thin and the surface area of the conductive bar is small, there is a drawback that the amount of heat generation is large and the temperature is likely to rise.

  Therefore, the present invention has an object of providing a conductive bar structure of a distribution board that has a simple structure and is easy to construct. The structure includes a plate-shaped conductive bar at the uppermost stage, and a middle stage and a lower stage. The conductive bar to be arranged forms a vertical part at the substantially central part of the substantially U-shaped plate, and the upper and lower end parts of the vertical part are bent to the opposite sides, and when incorporated in the distribution board, the conductive bar The bars are combined in pairs, and the conductive bars arranged on the left and right of the middle and lower stages are in different phases.

  In the conductive bar structure of the distribution board according to the present invention, a plate-like conductive bar is arranged at the uppermost stage, and the conductive bars arranged at the middle and lower stages are perpendicular to the substantially central part of the substantially U-shaped plate-like body. When the upper and lower ends of the vertical part are bent to the opposite side and incorporated in the distribution board, the conductive bars are combined in pairs, and the conductors are arranged on the left and right of the middle and lower stages. Since the bars are in different phases, the phases change depending on the position where the circuit breaker is attached, and the builder does not need to consider the balance between the phases, so the construction time can be greatly reduced. In addition, since the conductive bar can be set widely, the surface area is large and the heat generation amount can be suppressed.

  A conductive bar structure of a distribution board according to the present invention will be described with reference to the accompanying drawings of FIGS.

  The distribution board is composed of three-phase conductive bars. A neutral N-phase bar 1 is arranged in the uppermost stage, and an L1 phase bar 2 and an L2 phase bar 3 to which voltage is applied are arranged in the middle and lower stages. Circuit breakers 4 having plug-in terminals are arranged on both sides of these conductive bars, and the conductive bars are connected to the plug-in terminals. The circuit breaker 4 is of a plug-in type, and a plurality of recesses 5 are provided on the side surface, and terminals 6 are provided in the recesses 5 as necessary. In the case of a 100V circuit, terminals 6 are provided in the recesses of the upper part 5a and the lower part 5c, and in the case of a 200V circuit, terminals 6 are provided in the recesses of the upper part 5b and the central part 5c.

  The N-phase bar 1 arranged in the upper stage is formed in a plate shape. The L1 phase bar 2 and the L2 phase bar 3 arranged in the middle and lower stages are composed of a pair of the same shape. The L1 phase bar 2 and the L2 phase bar 3 are provided with vertical portions 2a and 3a by bending at the center portions of the substantially U-shaped plates, respectively. Both ends of the vertical portions 2a and 3a are bent to the opposite sides to form terminal connection portions 2b and 3b. When the L1 phase bar 2 and the L2 phase bar 3 are arranged, different phases are arranged in the terminal connection portions 2b and 3b adjacent vertically and horizontally with the vertical portions 2a and 3a interposed therebetween. For example, if the right side of the middle stage is the terminal connection part 2b of the L1 phase bar 2, the terminal connection part 2b on the opposite side of the L1 phase bar 2 with the vertical part 2a interposed therebetween is the lower left side. Further, the terminal connection part 3b on the opposite side across the vertical part 3a from the terminal connection part 3b of the L2 phase bar 3 on the left side of the middle stage is the lower right side.

  If the terminal of the circuit breaker 4 used for the distribution board assembled with the conductive bar is a 100V circuit, the terminal 6 is provided in the recesses of the upper part 5a and the lower part 5c. By simply connecting the circuit breaker 4 in this state to the left and right of the conductive bar, the voltage can be taken in a balanced manner. Since the middle and lower phases of the conductive bar are different on the left and right, the voltage can be taken in a balanced manner without changing the terminal position of the circuit breaker 4 and without taking time for the construction.

  Since the conductive bar is a plate-like body in both the vertical portion and the terminal connection portion, the surface area is large and the heat can be easily radiated, so that the temperature rise of the conductive bar can be suppressed.

  The configuration of the conductive bars connected to the plug-in circuit breaker is a set of two at the middle and the lower, and the arrangement of the conductive bars adjacent to each other on the left, right, top, bottom is different so that the circuit is cut off to the conductive bars The unit can be connected easily, and the voltage can be taken with a good balance of phases.

It is explanatory drawing which shows the electrically-conductive bar structure of the distribution board which concerns on this invention. It is a side view in FIG. It is explanatory drawing which shows the conductive bar structure of the conventional distribution board. It is explanatory drawing which shows the conductive bar structure of the conventional distribution board. It is a top view in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 N-phase bar 2 L1 phase bar 2a Vertical part 2b Terminal connection part 3 L2 phase bar 3a Vertical part 3b Terminal connection part 4 Circuit breaker 5 Recessed part 5a Upper recessed part 5b Central part recessed part 5c Lower recessed part 6 Terminal

Claims (1)

  It is a conductive bar structure of a distribution board formed by connecting a circuit breaker having a plug-in terminal on both sides of a conductive bar of a single-phase three-wire circuit, and a plate-like conductive bar is arranged at the uppermost stage, In the case where the conductive bar arranged in the lower tier forms a vertical portion at a substantially central portion of the substantially U-shaped plate-like body, and the upper and lower ends of the vertical portion are bent to the opposite sides and incorporated in the distribution board The conductive bar structure of the distribution board is characterized in that the conductive bars are combined in pairs, and the conductive bars arranged on the left and right of the middle and lower stages are in different phases.

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