JPS5812486Y2 - switchboard - Google Patents

Description

[Detailed description of the invention] The present invention relates to a power distribution board, and mainly aims to improve work efficiency, safety, and reliability in the installation of live parts such as power bus bars, load side lead-out terminals, and contact parts. purpose.

Conventionally, in a switchboard, power supply busbars, load-side terminals, contact parts, etc. have been installed separately and independently.

For this reason, the installation and connection work of the components of the charging portion has been extremely complicated.

For example, as shown in FIG. 1, conventionally, the bus room 2 of the switchboard 1 has vertical bus bars for three phases, and the power distribution equipment room 4 has power side contact parts 5 for connecting circuit breakers, for example, and load side Contact parts 6. The cable room 7 is provided with load-side terminals 8 for connecting cables for supplying power to the load, and all of these terminals can be individually and independently attached to a partition wall 10 or the like using an insulator material 9 as a mounting member. Therefore, the work is extremely complicated, and it is also extremely difficult to connect the attached parts.

In addition to poor work efficiency, maintenance and inspection are not easy, and there is a risk of short-circuit accidents, resulting in a lack of safety.

This invention allows the above-mentioned individual mounting parts to be molded with insulating material so that they can be assembled as a single unit, thereby streamlining the work one step further and improving safety. The purpose is to improve the ease of maintenance and inspection.

Hereinafter, the present invention will be specifically explained in detail with reference to Examples.

FIG. 3 shows an example of an integrated charging unit 11 for three-phase power distribution equipment, but as will be described later, this unit 11 is used for each power distribution equipment, such as a circuit breaker. It turns out.

FIG. 4 shows only the parts for one phase in the unit 11.

Reference numeral 3 denotes a vertical bus conductor, and a power supply side contact part 5 is protruded from a portion near the upper end.

The tip of this contact component 5 is connected to a power supply side connection terminal (not shown) of the other party's power distribution equipment, so that a clamping piece 12 that elastically clamps the power distribution equipment terminal when the power distribution equipment terminal is inserted. It has a structure that allows the connection terminal to be inserted and removed freely.

Furthermore, connection holes 13 are provided at the upper and lower ends of the vertical bus conductor 3 to extend and connect the vertical busbars in the upper and lower directions.

Reference numeral 14 denotes a lead-out conductor that integrally connects the load-side contact component 6 and the load-side terminal 8, and is provided obliquely at a distance from the vertical bus bar 3.

The load-side contact component 6 is also provided protruding from the diagonal conductor, and the protruding direction is the same as that of the power supply-side contact component 5 described above, and the contact component at the tip is also connected to the load side of the power distribution equipment. The structure allows the terminal to be inserted and removed freely.

The load side terminal 8 is provided protrudingly provided (or bent) in the opposite direction to the load side contact component.

This is shown as an example of a fixed connection method using connection holes 15 rather than an insertion structure.

The distance between the lead conductor 14 and the bus conductor 3 is appropriately determined depending on the insulation performance of the insulating material to be molded.

After forming three phases by arranging three bus conductors 3 and three lead-out conductors 14 in parallel as shown in Fig. 4, the whole is molded with a resin insulating material using a split mold. By integrally molding, a charging unit 11 as shown in FIG. 3 can be obtained.

In FIG. 3, 16 is a slot that is open across the side surface and the top or bottom surface of the unit so that the upper and lower ends of the vertical busbar 3 can be seen into the side surface and the top or bottom surface of the unit, and 17 is a slot where the load side terminal 8 is connected to the unit. a slot that is open across the sides and top of the unit so that you can see into the sides and top of the unit;
Reference numeral 18 denotes a protruding portion on which the power supply side contact component 5 is molded, and numeral 19 indicates a protrusion portion on which the load side contact component 6 is molded.

The contact part 5.6 is not completely buried in this protruding part 18, 19, but as shown in FIG.
The elastic clamping piece 12 is configured to be movable within a window hole 20 provided in the side surface of the protruding portion 18,19.

For example, highly insulating epoxy resin is suitable as the molding material.

Particularly select materials with excellent curing and molding properties.

Figure 2 shows the unit 11 made as described above.
An example in which the present invention is applied to a switchboard 1 having a stage configuration is shown.

Bolt holes (not shown) are drilled in several places in the molded part of the unit 11, and bolts are passed through the bolt holes to partition the power distribution equipment room 4 and the busbar room/cable room 7 into the partition wall 10.
Attach directly to.

When the three units 11 are installed individually, the vertical busbars are not connected between the units 11, so they are successively connected by the connection conductor 3' using the connection hole 13 at the -L lower end of the vertical busbar.

When the three units 11 are attached to the partition wall 10 as described above, the vertical bus bar, the power supply side contact parts 5. Load side contact parts 6. The load side terminal 8 has been integrally attached.

Connections of power distribution equipment and cables in cable rooms are also made extremely simple as described below.

That is, to connect the power distribution equipment at each stage, it is sufficient to simply insert the respective connection terminals into the power supply side contact parts 5 and the load side contact parts 6 of the units 11 at the corresponding stage.

In addition, to connect the cable for connecting the load, it is only necessary to connect the connecting terminal of the cable to the load-side connecting terminal 8 of the unit.

Of course, it is possible to further configure the three units) ~ in an integrated manner for a three-tiered power distribution board, but since it can be molded in a small mold, it is possible to make it in three parts for use with power distribution equipment. The examples are excellent.

In the switchboard of the present invention shown in FIG. 2, there is no distinction between the busbar room 2 and the cable room 7.

According to the above-mentioned present invention, and as revealed by the embodiments, numerous advantages are produced.

First, it is extremely easy to work with. Vertical busbars, contact parts, load-side terminals, etc. are mass-produced in advance as live unit units, and by simply attaching this unit directly to the switchboard with bolts, etc., they can be installed all at once, eliminating the need for supporting insulators. .

Second, since most of the conductors of the live parts are covered with an insulating material, short circuit accidents are less likely to occur.

This is because the parts where such accidents are likely to occur are completely molded with insulating material.

Thirdly, there is a space reduction effect. This is because, as mentioned above, there is no difference from omitting the busbar room.

Fourth, maintenance and inspection are no longer necessary or have become extremely easy.

In particular, the contact parts 5 having a somewhat complicated form such as the clamping piece 12 have a window hole 2 opened on one side of the unit body 11.
Although the slots 16 and 17 appear inside the unit 11, there is no risk of short circuits because they are surrounded by insulating material. Unlike the window hole 20, it is open (two-dimensionally) and allows for easy fixing work such as insertion of connection fittings and screwing, making the entire unit very easy to use. Therefore, it is highly effective to use it as a unit.

In summary, the present invention can significantly streamline the installation and connection of live parts in a switchboard, and has great industrial significance.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional power distribution board, FIG. 2 is a sectional view of a power distribution board according to the present invention, and FIG. 3 is a perspective view of a charging unit 11.
FIG. 4 is a perspective view showing the internal configuration of the charging unit 11 for one phase, and FIG. 5 is a protrusion 18 of the charging unit 11.
(19) FIG. 1...Switchboard, 2...Busbar room, 3...
...Vertical bus conductor, 4...Power distribution equipment room, 5
...Power side contact parts, 6...Load side contact parts, 7...Cable room, 8.
...Load side terminal, 11...Charging unit, 14...Output conductor.

Claims (1)

[Scope of utility model registration request] A connection part for connecting and extending the connection at both the upper and lower ends of a power distribution board in which the power supply side connection terminal and load side connection terminal of power distribution equipment are removably connected to the power supply bus bar and load side lead wire through contact parts, respectively. A bus conductor formed by integrally connecting a power supply side contact part in the middle, and a lead-out conductor formed by having a load side terminal at one end and a load side contact part connected at the other end, spaced apart from each other. and integrally molded with an insulating material to form a live part unit, and one side of the unit is provided with a window hole through which the power supply side contact parts and the load side contact parts can be seen, and the upper surface of the unit and The upper and lower connection parts of the bus conductor and the load side terminals of the lead-out conductor are shown on the lower surface, and the other side of the unit is provided with an open slot extending over the upper or lower surface, and a plurality of the units are installed in the vertical direction. A power distribution board characterized in that the units are lined up and fixed in the slots, bus conductors between the units are connected to each other and load cables are connected to each other in the slots, and connection terminals of power distribution equipment are connected to each other in the window holes.