JP3284157B2 - Switchboard - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board having a large number of branch breakers arranged on both sides of a power supply bar arranged on a side of a main breaker in parallel with a width direction of the main breaker. is there.

[0002]

2. Description of the Related Art In a conventional distribution board of this type, a crossover bar connecting a main breaker and a power supply bar for supplying power to a branch breaker is connected to a distribution board bottom plate in a width direction in order to reduce the size of the distribution board. There is a type in which a protective cover is provided from the upper side, which is disposed in parallel so as to be vertical, and has a vertical partition plate in which each of the crossover bars is fitted.

[0003]

However, in this prior art, the vertical partition plate of the protection cover is fitted between the vertical migration bars only, so that the protection cover is not integrated with the migration bar. There is a problem that the protective cover is easily detached because it is weak.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has three power supply bars installed parallel to the width direction of the main breaker on the side of the main breaker. In a distribution board having a large number of branch breakers arranged on both sides, one or two of the three crossing bars connecting the load side terminal portion of the main breaker and each power supply bar are connected. The crossbar body is formed so that the width direction is horizontal to the bottom plate of the distribution box, and the crossbar body of the other two or one crossbar is perpendicular to the bottom plate of the distribution box body in the width direction. And the horizontal transition bar main body of the one or two transition bars is fitted into a horizontal groove formed in the upper part of the protective cover, and the vertical transition bar of the other two or one transition bar is fitted. The transition bar main body was fitted into a vertical groove formed below the horizontal groove. For example, in which a connecting terminal plate portion provided in each cross bar with connecting terminal plate portion provided on each cross bar to the load side terminal of the main breaker and that screwed to the feeding bars.

[0005]

In such a distribution board, three crossover bars connecting the load-side terminals of the main breaker and the respective power supply bars have the crossover bars fitted into the horizontal and vertical grooves of the protective cover. Therefore, even if the insulation distance is short, sufficient insulation can be secured between each of the crossover bars, and the other two or one crossover bar is fitted with one or two horizontal crossover bars. Since the protective cover is fitted in the vertical groove formed below the horizontal groove, the area of the protective cover in the width direction can be reduced, and the entire distribution board can be downsized.

Further, since the horizontal transition bar main body of one or two transition bars is fitted into the horizontal groove of the protective cover, the terminal plate of the transition bar is connected to the load-side terminal of the main breaker. By connecting and screwing the connection terminal plate to the power supply bar, the transfer bar is fixed, and the lower wall portion of the horizontal groove is located below the transfer bar body of the transfer bar, so the protective cover is There is no danger of detachment from above.

[0007]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 denotes a three-pole main breaker attached to the bottom plate 21 of the distribution board box. The bar is arranged from above with a voltage line (L1), a neutral line (N), and a voltage line (L2). The central neutral line (N) is located on both sides of the voltage line (L1) and the voltage line ( L2) It is higher and attached to the bar holder 22. Reference numeral 3 denotes a two-pole branch breaker disposed on both sides of the power supply bar 2 and connected to the neutral line (N) and the voltage line (L1) or the voltage line (L2) by a branch bar (not shown). ing. 23 is a protective plate that covers the branch bar.

Reference numerals 4, 5, and 6 denote three transition bars that connect the three-pole load-side terminal portions of the main breaker 1 to the power supply bars 2. One of the three crossover bars, the neutral bar (N) of the crossover bar 4 is an L-shaped crossover bar main body 41 whose width direction is formed horizontally with respect to the bottom plate 51 of the distribution board box. And a terminal plate 42 connected to the load terminal of the neutral wire located at the center of the load terminal of the main breaker 1 is connected to one end forward of the laterally long transition bar 41a of the transition bar main body 41. At the same time, a neutral wire (N) is applied to the outside of the tip of a vertically long bar 41b continuously provided in front of the other end of the horizontally long bar 41a.
Horizontal connection terminal plate 43 that is horizontally connected to the power supply bar 2
It is the one that was stretched. Further, the terminal plate portion 42 is connected to the front side of the short leg plate portion 44 formed below the outer edge of the horizontally long cross bar portion 41a and is located below the cross bar main body 41.

The voltage line (L) of the main breaker 1 located closest to the power supply bar 2 among the other two crossover bars.
The crossover bar 5 of the voltage line (L2) connecting to the load-side terminal section 2) has an L-shaped crossover bar main body 51 whose width direction is formed perpendicular to the bottom plate 21 of the distribution board box. Figure 1
, A terminal plate 5 connected to the load-side terminal of the voltage line (L2) located to the right of the load-side terminal of the main breaker 1
2 is provided in front of the upper end portion of one end of the horizontally long crossing bar portion 51a of the crossing bar main body 51, and the horizontally long crossing bar portion 51 is provided.
A horizontal connection terminal plate portion 53 for connecting horizontally to the power supply bar 2 of the voltage line (L2) is extended outside a lower end of a vertically long bar portion 51b continuously provided in front of the other end of a.

Furthermore, of the other two crossover bars, the crossover bar 6 of the voltage line (L1) connecting the power supply bar 2 and the load-side terminal of the voltage line (L1) of the main breaker 1 located farthest away. In the same manner as the cross bar 5 of the voltage line (L2), the cross bar main body 61 is moved in the width direction so that the bottom plate 21
And a terminal plate 62 connected to the load-side terminal of the voltage line (L1) located to the left of the load-side terminal of the main breaker 1 in FIG. A voltage line (L1) is connected to the front of the upper end portion of one end of the horizontally long transition bar portion 61a of the transition bar main body 61 and to the front lower end of the vertically long transition bar portion 61b continuously connected to the front end of the other end of the horizontally long transition bar portion 61a. A horizontal connection terminal plate 63 that is connected horizontally to the power supply bar 2 is stretched.

The transition bar main body 61 of the transition bar 6 of the voltage line (L1) is formed so as to be juxtaposed inside the transition bar main body 51 of the transition bar 5 of the voltage line (L2). The base end of the terminal plate portion 52 is connected to the upper extension plate portion 5a of the horizontally long transition bar portion 51a so that the upper end of the main body 61 does not contact the lower surface of the terminal plate portion 52 of the transition bar 5 of the voltage line (L2).
4, the terminal plate 52 is formed by bending the terminal plate 52 so that the tip end of the terminal plate 52 is at the same position as the load terminal of the voltage line (L2) of the main breaker 1.
It is bent so that the tip is downward through 55. Further, the terminal plate portion 62 of the cross bar 6 of the voltage line (L1).
Is directly connected to the upper end of the horizontally long cross bar 61a, so that the distal end of the terminal plate 62 is located at the same position as the load terminal of the voltage line (L1) of the main breaker 1. It is bent so that the tip is upward through the two fold curves 65, 65.

Reference numeral 8 denotes a synthetic resin protective cover that covers each of the transfer bars. As shown in FIG.
At the upper part, a horizontal groove portion 8a is formed to fit the horizontal transfer bar body 41 of the transfer bar 4 and a vertical transfer bar body 51 of the other transfer bars 5, 6 is provided below the horizontal groove portion 8a. , 61 are formed in the vertical groove portions 8b, 8b. That is, the water protection cover 8 is narrower in front of one side end of the wide oblong cover plate portion 12a that covers the upper base end side of the terminal plate portions 42, 52, 62 of the crossover bars 4, 5, 6. The vertical side plate portion 13b and the horizontal side plate portion 1 which are vertically provided outside the L-shaped horizontal cover plate portion 12 in which the vertical cover plate portions 12b are continuously provided, that is, outside the vertical cover plate portion 12b and outside the horizontal cover plate portion 12a.
The horizontal partition plate portion 14 is horizontally stretched inside the upper portion of the side plate portion 13 formed into an L-shape and formed of the cover plate portion 3a.
And the horizontal partition plate 14 form the horizontal groove 8a.

The vertical groove portions 8b are formed between vertical partition plate portions 16, 17 and 18 which are vertically provided on the lower surface side of the eaves plate portion 15 extending inward at the lower end of the side plate portion 13. And the vertical partition plate portions 16, 17, and 18 are
The side plate portion 13a of the side plate portion 13 bent in the shape of a letter and the horizontal cover plate portion 15a and the vertical cover plate portion 15b of the cover plate portion 15 extending inward at the lower end of the vertical plate portion 13b. And the vertical side vertical partition plate portions 16b, 17b, 18b are formed in an L-shape by passing through the voltage lines (L1) and (L2). Bar 5,
The vertical cross bar portions 51a, 61a and the vertical cross bar portions 51b, 61b of FIG. Further, the vertical partition plate portions 16, 17, 1
8, vertical partition plate portions 17 located at the middle and inside,
The notch portions 17c, 1a through which the base end side of the terminal plate portion 52 of the crossover bar 5 of the voltage line (L2) can pass from below are formed in the horizontal vertical partition plate portions 17a, 18a and the horizontal eaves plate portion 15a of FIG.
8c and 15c are provided.

The base end of the lateral vertical partition plate portion 18a of the vertical partition plate portion 18 located on the inner side is a vertical end where the base end of the terminal plate portion 62 of the cross bar 6 of the voltage line (L1) is located in the middle. The width of the terminal plate portion 5b is set to be inside from the base end of the horizontally long cover plate portion 12a of the cover plate portion 12 so that it can pass to the upper end of the horizontal vertical partition plate portion 17a of the partition plate portion 17. The lateral vertical partition plate portion 16a of the vertical partition plate portion 16 located on the outside is adjusted to the length of the horizontal transition bar portion 51a of the transition bar 5 of the voltage line (L2) and extends to the lower end of the horizontal plate portion 13a. It is supposed to be erected.

Further, the ends of the vertical partition plates 17b, 18b of the vertical partition plates 17, 18 located in the middle and inside are connected to the crossover bars 5, 6 of the voltage lines (L1) and (L2). The connection terminal plate portions 53 and 63 extend to the rear end portions of the connection terminal plate portions 53 and 63 so that the horizontal connection terminal plate portions 53 and 63 provided at the distal ends of the vertically long crossover bar portions 51a and 61a can protrude. The vertical side plate 13b has a window hole 19 through which the connection terminal plate 43 of the transition bar 4 for neutral wire (N) projects.
Is provided.

In the above-described structure, first, the crossover bar 4 having the neutral wire (N) in the horizontal groove portion 8a of the protective cover 8 and the crossover bar 4 in a horizontal shape is connected to the crossover bar main body 41. Due to the resistance of the projections 48 protruding from the front and back surfaces of the main body 41, it does not come out sideways, and a gap for heat radiation is formed between the main body 41 and the groove wall for fitting. A horizontal connection terminal plate portion 43 stretched outside the distal end of 41b is extended from a window hole 19 provided in the vertical side plate portion 13a of the side plate portion 13 and incorporated. Next, the crossover bar 5 for the voltage line (L2) is formed in a vertical shape by connecting the vertical crossover bar body 51 to a vertical groove 8b located outside the protective cover 8 by a projection 58 protruding from the front and back surfaces of the crossover bar main body 51. It does not fall out due to resistance, and is fitted with a gap for heat dissipation formed between the groove wall surface and the base end side of the terminal plate portion 52 of the crossover bar 5 in the horizontal vertical partition plate portion 17a. 18a and the lateral eaves 15
The notch portions 17c, 18c, 15c formed in a are fitted from below, and the connection terminal plate portion 53 is extended from the base end of the lateral vertical partition plate portion 16a of the vertical partition plate portion 16 located outside and incorporated.

Subsequently, the transition bar 6 of the voltage line (L1)
The vertical transition bar main body 61 does not come out downward due to the resistance of the projection 68 projecting from the front and back surfaces of the transition bar main body 61 in the vertical groove portion 8b located inside the protective cover 8, and A heat-dissipating gap is formed between the groove and the wall surface, and the connection terminal plate 63 is fitted and extended from the base end of the lateral vertical partition plate 17a of the vertical partition plate 17 located in the middle.

As shown in FIG. 3, the transfer bars 4, 5, and 6 are assembled into the protective cover, and the transfer bar unit A is provided.
And the terminal plate portions 42, 52, 6 of the crossover bars 4, 5, 6
2 to the load-side terminals of the main breaker, and connect the respective connection terminal plates 43, 53, 63 to the power supply bars 2, 2, 2
Is screwed to connect the main breaker and the power supply bars 2, 2, 2 while securing insulation. In addition, since the horizontal transition bar main body 41 of the transition bar 4 for the neutral wire (N) is located above the horizontal partition plate portion 14 which is the lower wall portion of the horizontal groove 8a of the protection cover 8, the protection cover is not moved. There is no danger of detachment from above. In this embodiment, the connecting bar main body of one of the connecting bars is formed horizontally in the width direction with respect to the bottom plate of the distribution box, and the connecting bar main body of the other two connecting bars is divided in the width direction. The present invention is not limited to the above-described embodiment, but the present invention is not limited to the above embodiment. It is needless to say that the transfer bar main body of the other transfer bar may be formed so as to be horizontal with respect to the bottom plate of the distribution box body and perpendicular to the bottom plate of the distribution box body.

[0019]

As is apparent from the above description, according to the present invention, one or two of the three crossover bars connecting the load terminal of the main breaker to each of the power supply bars are provided. The main body is formed so that the width direction is horizontal with respect to the bottom plate of the distribution box, and the transition bar main body of the other two or one transition bar is formed with the width direction perpendicular to the bottom plate of the distribution box. Then, another vertical connecting bar is disposed below the horizontal one or two connecting bars, and the horizontal connecting bar body of the one or two connecting bars is formed above the protective cover. The connecting bar is connected to the load-side terminal of the main breaker and the connecting terminal plate is screwed to the power supply bar. Since the lower wall portion is suppressed, the protective cover may be detached from above. It is those not Ku. Therefore, the present invention is significant in that it solves the conventional problems and contributes to industrial development.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view showing a main part of the embodiment of the present invention.

FIG. 3 is a perspective view showing a state in which a transition bar used in the embodiment of the present invention is incorporated in a protective cover.

FIG. 4 is a partially cutaway perspective view showing a state in which a transition bar and a protective cover used in the embodiment of the present invention are separated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main breaker 2 Power supply bar 3 Branch breaker 4 Transition bar 5 Transition bar 6 Transition bar 8 Protective cover 8a Horizontal groove 8b Vertical groove 21 Bottom plate

Claims (1)

(57) [Claims] 1. Three power supply bars installed on the side of a main breaker (1) in parallel with the width direction of the main breaker (1).
In a distribution board having a large number of branch breakers (3) arranged on both sides of (2), three crossovers connecting the load-side terminals of the main breaker (1) and the power supply bars (2) are provided. Out of the bar
The crossbar body of one or two crossbars is formed so that the width direction is horizontal with respect to the bottom plate (21) of the distribution box, and the crossbar body of the other two or one crossbar is wide. The direction is formed perpendicular to the bottom plate (21) of the distribution box, and the horizontal crossbar body of the one or two crossbars is formed in a horizontal groove ( 8a), the other two or one of the crossover bars is fitted to the vertical groove formed below the horizontal groove, and the terminal plate portions provided on each of the crossover bars are A distribution board which is connected to a load-side terminal section of a breaker (1) and each connection terminal plate section provided on each crossover bar is screwed to each power supply bar (2).