JPH0431764Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a shingle breaker mounting device for a power distribution board for mounting a plurality of shingle breakers on a power distribution board.

As shown in FIG. 1, a conventional distribution board selectively connects a main bus bar 4 with a neutral bus bar 1 and load bus bars 2 and 3 arranged in parallel with each other, and a plurality of branch bus bars 5 of different lengths. These branch busbars 5 were pulled out to the left and right, and the power supply parts of a plurality of distribution boards and disconnectors 6 were respectively connected to the ends of these branch busbars 5.

However, in this case, the branch bus bar 5 three-dimensionally crosses the main bus bar 4 and the shear breakers 6 are arranged on the right side, the left side, or the left and right sides when viewed from the main bus bar, which is structurally complex and requires a large space. there was. Further, three types of dedicated branch busbar bars 5 of different lengths are required, and attachment and detachment of the branch busbar bars 5 is troublesome. In addition, since the main bus bar 4 is placed in the center of the shingle and disconnectors placed on the left and right,
The main body of the distribution board was wide and required a middle plate to protect the live parts.

The present invention solves these conventional problems by installing a connecting terminal on the bottom and installing a disconnector from above the main bus bar so that the connecting terminal comes into contact with the main bus bar. In addition, the sill cutter mounting base is formed in a horizontal U-shape, and an opening is provided on the upper surface thereof, and a plurality of sill cutters are arranged in this opening. As a result, the conventionally used branch bus bar can be omitted, saving the effort of connection and reducing the space.

Hereinafter, embodiments of the present invention will be described with reference to the drawings for a single-phase three-wire system.

FIGS. 2 and 3 show a first embodiment of the shingle disconnector mounting device for a distribution board according to the present invention.

In Fig. 2, numerals 4 indicate main bus bars arranged parallel to each other at a certain insulation distance to prevent discharge; of these, 1 corresponds to the neutral phase, and neutral bus bars 2 and 3 correspond to the neutral phase, respectively. This is a load bus bar corresponding to the first phase and the second phase. Reference numeral 7 is a board made of a steel plate, and 8 is a disconnector mount mounted on the board 7, which is made of a steel plate or synthetic resin. This sheath cutter mounting base 8 is extended perpendicularly to the plane of the paper in order to arrange a plurality of sheath cutters 6, which will be described later, and FIG. 2 shows the vicinity of its end. As shown in the figure, the shingle disconnector mounting base 8 is formed into a substantially horizontal U-shape by bending its both sides at substantially right angles, and is screwed to the base plate 7 at both ends. Further, an elongated opening 8a along the above-mentioned extension direction is provided on the upper surface. Incidentally, FIG. 10, which will be described later, shows a case where two openings 8a are arranged in parallel. 9 Opening 8 of cutter mounting base 8
The main bus bar support member is provided at both ends in the longitudinal direction of a, and is made of an insulating material and consists of upper and lower members 9a and 9b. As shown in the figure, the main busbar bar 4 is fitted into a groove formed in the upper and lower main busbar support members 9a, 9b corresponding to the thickness of the main busbar bar 4, and is tightened with a screw 11 to attach the shingle breaker. It is attached to stand 8. Therefore, the main bus bars 4 are arranged parallel to each other at a predetermined interval between both ends of the opening 8a of the breaker mounting base 8, and are floating above the base plate 7.

FIG. 3 shows the state in which the chopper and disconnector 6 is attached, and is a 12-stick and disconnector support member, and this support member 12 is attached to both side edges of the opening 8a by screws 13. There is. In addition, the stepped portion 1 of the support member 12
The protrusion 2a is engaged with the cutout 14 of the cutter 6, and the protrusion 15 below the cutout 14 is supported and fixed on the cutter mount 8.

FIG. 3 shows an example in which the connecting blade 16 of the connecting terminal of the sheath disconnector 6 is connected to the main bus bar 2 side of the first phase. The shear cutting mechanism of the sheath cutter 6 is not particularly different from the conventional one and is not directly related to the present invention, so a description thereof will be omitted. In the breaker 6, 17 is a movable contact piece, and 19 is a fixed contact seat.
This fixed contact seat 19 has a fixed contact 18 at one end.
is provided, and is extended downward and bent approximately at right angles at appropriate positions to form a horizontal extension 20. The connecting blade 16, which is removably attached to the bottom of the shear disconnector 6, has a screw hole 21 as shown in FIG. It is configured to be fastened and fixed to the bottom surface of 6. As a result, the connecting blade 16 can be easily attached and detached, and can be freely replaced or the attachment position changed. In addition, 41
is the load terminal.

FIG. 5 shows a state in which the connecting blade 16 is attached to the extension portion 20 and a state in which it is not attached.
The main body case of this cutter 6 is molded, and three grooves 24 are formed in the bottom surface into which the main bus bar 4 is inserted, and two grooves 25 are formed into which the connecting blades 16 are inserted. is formed deeper than the groove 24.

Based on the above configuration, when installing the sheath disconnector 6 on the distribution board, insert the connecting blade 16 attached to the extension part 20 as shown in FIG. 5 into the main bus bar 2 on the distribution board side,
The attachment member 12 may be engaged with the notch 14 of the sheath cutter 6 to attach it as shown in FIG. 3. If it is not the main bus bar 2 of the first phase as shown in Fig. 3,
If you want to take power from the main bus bar 3 of the second phase, remove the connecting blade 16 from the position shown in Fig.
What is necessary is to replace it with the groove 25 at the position corresponding to the main bus bar 3 of the phase.

The above is a case where a single-pole type shear disconnector 6 is mounted on the sheath disconnector mounting base 8 as shown in FIG. Therefore,
For example, if the power supply is 100V, please use the second
As shown in FIGS. 9 and 10 of the embodiment, the load terminal of the neutral terminal device 40 electrically connected to the neutral bus 1 and this one-pole type breaker 6 Wiring to the load is connected to the load terminal 41 of the .

Note that the neutral terminal device 40 can be operated to open and close the current manually in the same way as the disconnector 6;
It does not have an automatic current cutoff function like the sheath breaker 6. Therefore, by using not only the wire breaker 6 but also the neutral terminal device 40, the cost of the entire distribution board can be reduced.

On the other hand, the power supply is turned on using only the single-pole type disconnector 6.
When setting the voltage to 200V, connect the connecting blade 16 to the load terminal 41 of the disconnector 6 connected to the load bus 2, and the load terminal 41 of the disconnector 6 connect the connecting blade 16 to the load bus 3. , connect the wiring to the load.

In addition, in the case where the breaker 6 is a two-pole type and the power source is set to 100V, for example, two connections are made so that the connection blade 16 is connected to the main bus bars 2 and 1 of the first phase and neutral phase at the same time. The blades 16 may be attached at positions A and B as shown in FIG. Also, if you want to set it to 200V, A
If the connection blades 16 are installed in the positions of and D and inserted into the main busbars 2 and 3 at the same time, the first and second
200V is obtained between the phases.

According to this embodiment, the sheath disconnector 6 is placed above the main bus bar 4 supported by the support member 9, and the sheath disconnector 6 can be directly inserted and connected to the main bus bar 4. Branch busbars such as the above can be omitted, and therefore the width of the distribution board can be made much smaller than in the past. In addition, the trouble of replacing branch busbars as in the past is eliminated,
It is possible to selectively connect the neutral phase, first phase, and second phase by simply changing the mounting position of the connection blade or replacing the disconnector without touching the bus bar at all. In addition, the disconnector mounting base 8 is formed into a horizontal U-shape with an opening 8a, and the busbar support member 9 is attached to both ends of the opening 8a.
The installation accuracy of the main bus bar 4 is increased, so
The mounting accuracy is also increased. As a result, the three bars 1, 2, and 3 are supported at a predetermined position while maintaining a predetermined spacing over their entire length. The tester and disconnector 6 can be smoothly inserted and removed at any position on the busbar, and can be held in a natural state. Further, each member can be easily attached and assembled.

7 to 10 show a second embodiment of the present invention.

The difference from the first embodiment is that the neutral bus bar 1 and the main bus bar 4, which is the load bus bars 2 and 3, are formed into a U-shape so that the line breakers 6 can be arranged in two rows. It is located in the part where the neutral terminal device 40 is provided,
The other parts are constructed in the same manner as in FIGS. 2 and 3. The shield disconnector mounting base 8 is functionally similar to the shield disconnector mounting base 8 shown in FIGS. 2 and 3, but it is designed so that a plurality of shield disconnectors can be installed in parallel in two rows on the left and right. has been completed. For this purpose, two openings 8a are provided in parallel.

Fig. 8 is a schematic connection diagram when the line breakers 6 are arranged in two rows, 6a and 6g are two-pole type line breakers,
6b to 6f and 6h to 6l are single-pole type breakers.

FIG. 9 is an overall perspective view of the case where the combs and disconnectors 6 are arranged in two rows as shown in FIG. 7. FIG. 10 is an exploded perspective view of the main part of FIG. 9, showing the case where the sheath breaker 6 and the neutral terminal device 40 are attached to the sheath breaker mounting device.

In FIGS. 9 and 10, a protective cover 27 made of an insulating material is placed and fixed on the front side of the bent portion of the U-shaped main bus bar 4, and this protective cover 27 has two holes. 28a and 28b are provided. Further, two conductor bars (copper bars) 29a and 29b fixed with bolts to both sides of the bent portion of the neutral bus bar 1 protrude from the holes 28a and 28b of the protective cover 27. Current-carrying bars 26a, 26b are extended in the same direction as the arrangement direction of the cutters 6 and fixed to the bent portions of the protruding conductor bars 29a, 29b with bolts 30. These neutral terminal devices 40 and the neutral bus bar 1 are electrically connected by inserting the current-carrying bars 26a, 26b through the plurality of neutral terminal devices 40.

On the other hand, a connecting part 4a is provided at one end of the main bus bar 4, and this connecting part 4a is connected to an integrating wattmeter 32 via a conductor 31, and furthermore, this integrating wattmeter 3
2 is connected to the output end of the main shield breaker 34 via a conductor 33. Power is supplied to the input end of this main disconnector 34. These integrated wattmeter 32 and main shield breaker 34 are mounted and fixed on a board 35 made of a steel plate. In addition,
One end of the main bus bar 4 may be directly connected to the main bus disconnector 34 without going through the integrating wattmeter 32 . Also, a connecting portion 4a which is one end portion of the main bus bar 4
A protective cover 36 made of an insulating material is attached and fixed on top so as to cover it. Further, 37 is a connection hole to the distribution board main body, and 38 is a hole for fixing the protective cover 27 to the disconnector mounting base 8 with screws 39. Although FIG. 10 shows a case where the chopsticks and disconnectors 6 are not installed side by side on the left and right, but are attached only on one side, this is omitted because the same applies to the other side.

According to this embodiment, a plurality of sheath breakers 6 can be arranged in two rows. In addition, since the plurality of neutral terminal devices 40 are arranged in the same direction as the arrangement direction of the wire breakers 6, all the wiring directions from these neutral terminal devices 40 and the wire breakers 6 to the load are fixed. It can be in the same direction. For this reason, wiring processing becomes easier and aesthetically pleasing.

FIG. 11 shows a third embodiment of the present invention;
The difference from the second embodiment lies in the method of supporting the main bus bar 4 and the configuration of the connection terminal portion of the shingle disconnector 6. That is, the main bus bar 4 is attached to the lower support member 9 provided at both ends of the opening 8a of the breaker mounting base 8.
is installed as shown in the figure, and a press-contact type connecting blade 40 is used in place of the above-mentioned plug-in type connecting blade 16 on this planted main bus bar 4, thereby creating a press-contact type connection terminal configuration. . Other points are the same as those described above, so explanations will be omitted.

In each of the embodiments described above, a case of a single-phase three-wire system was mentioned, but it goes without saying that the present invention is not limited to this. Further, the present invention is not limited to the embodiments, and various applications and modifications are possible.

By configuring the present invention as described in the claims for utility model registration, the following effects can be particularly obtained.

(1) No branch bus bar is required when installing the line breaker.

(2) Bring the sheath breaker above the main bus bar,
Connection can be made by placing the connection terminal in direct contact with the main bus bar, and when removing it, it is only necessary to pull it out upwards, making attachment and detachment much easier than in the past.

(3) Since the shingle breakers are arranged on the main bus bar and the branch bus bar is omitted, the installation space for the shingle breakers is much smaller than before.
Therefore, the size of the entire distribution board can be significantly reduced compared to the conventional one, and the size and cost of the distribution board can be reduced.

(4) It is easy to replace the disconnector and change the wiring.

(5) The installation accuracy of the cutter and other parts is high;
Therefore, assembly is easy and the disconnector can be attached and detached smoothly.

(6) The molding of the breaker mounting base can be done easily and with high precision.

(7) By attaching a neutral terminal device to the energizing bar, it is possible to arrange multiple neutral terminal devices in the same direction as the arrangement direction of the wire breakers, and these neutral terminal devices and The wiring direction from the disconnector to the load can all be in the same direction. Therefore, it becomes easier to perform wiring processing, and it also becomes aesthetically pleasing.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing the installation state of a conventional shingle disconnector for a distribution board, and FIGS. 2 and 3 are a first embodiment of the shoring switch installation device for a power distribution board according to the present invention. 4 is a detailed view of the connecting blade 16, FIG. 5 is a bottom view showing an example of a one-pole type shear disconnector applied to the present invention, and FIG. Bottom view showing an example of an applied two-pole disconnector, Nos. 7 to 10
The figures show a second embodiment of the present invention; FIG. 7 is a sectional front view of main parts, FIG. 8 is a wiring diagram, FIG. 9 is a perspective view of the whole, and FIG. 10 is a main part of FIG. FIG. 11 is a partially exploded perspective view and a sectional front view of main parts showing a third embodiment of the present invention. In addition, in the symbols used in the drawings, 1... Neutral bus bar, 2, 3... Load bus bar, 4... Main bus bar, 6... Edge breaker, 8... Edge breaker mounting base, 9... Main bus support member, 16, 40... Connection blade, 26... Neutral terminal device, 29a, 29b...
It is a conductor bar.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A shield breaker mounting base provided with an opening,
a plurality of main bus bars disposed within the opening along the opening at predetermined intervals and each having at least a straight portion, and connected to a neutral bus bar of the plurality of main bus bars; and a current-carrying bar extending in the same direction as the straight portion, and the connecting terminal of the wire cutter having a connecting terminal provided at the bottom is brought into contact with the straight portion through the opening, and the wire is connected to the wire. A disconnector mounting device for a distribution board in which a disconnector is attached to the disconnector mounting base. 2. The power distribution board disconnector according to claim 1, wherein the plurality of main bus bars have a bent part in addition to the straight part and are U-shaped as a whole. Mounting device.