JPH022009Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to voltage-specific connections between branch switches arranged in a row and the main bar of a single-phase three-wire distribution line.

(Prior art) Conventionally, 100/200 volt switching connection of a single-phase three-wire distribution line to each power terminal of a branch switch was performed using the following methods.
Many devices are equipped with a branch bar dedicated to 200 volt switching connections, but in this case there is a risk of losing the dedicated branch bar, so as a countermeasure, for example,
As described in Publication No. 14582 and Publication No. 56-19539, a branch bar is installed between each power terminal of the branch switch and the main bar of the single-phase three-wire distribution line, and the power supply voltage of the branch switch is connected to the voltage line. In order to switch from 100 volts between the power supply terminal and the neutral line to 200 volts between both voltage lines, remove the branch bar connected between the power terminal of the branch switch and the neutral line of the main bar, and then turn it over and branch. There is also a method of connecting between the power terminal of the switch and the voltage line of the main bar, but in this case, the branch bar is common for 100 and 200 volts, and although the attached dedicated branch bar is not required, the 100 and 200 volts for the main bar are connected. Since the mounting structure of the switching branch bar is different from the mounting structure of the branch bar for other branch switches, the mounting structure of the branch switch that can switch between 100 and 200 volts is complicated, and
There was a drawback that there was a risk of losing the branch bar once it was removed.

(Problems to be solved by the invention) The object of the invention is to obtain a single-phase three-wire distribution board that has a simple structure and can easily switch between 100 and 200 volts.

(Means for solving the problem) The present invention arranges three main bars of a single-phase three-wire distribution line in parallel along each power terminal of the branch switches arranged in a row, and connects each power terminal of the branch switches. The voltage lines of the main bar are removably connected via screws with a voltage line branch bar, and the neutral wire can be bent between each power terminal of the branch switch and the neutral wire of the main bar. The branch bar can be removed with a screw, and by bending the branch bar for the neutral line, the branch bar for the neutral line can be screwed into the voltage line of the main bar together with the branch bar for the voltage line of the adjacent branch switch. It is a single-phase three-wire distribution board that can be connected via the

(Function) In a single-phase three-wire distribution board configured in this way, a branch switch to which 100 volts is supplied is connected.
When switching to 200 volts, at the branch bar connected between the power terminal of the branch switch and the neutral wire of the main bar, leave the connection to the power terminal as is, remove the neutral wire side connection, and bend it.
The branch switch can be easily switched from 100 volts to 200 volts by connecting the bent branch bar to the voltage line of the main bar together with the branch bar for the voltage line of the adjacent branch switch via screws. By returning the bent branch bar and connecting it to the neutral wire of the main bar,
The branch switch can be easily changed from 200 volts to 100 volts.

(Example) Next, the configuration of an example of the present invention will be described with reference to the drawings.

On the power terminal P side of the branch switches 1 arranged in a row, there are main bars of a single-phase three-wire distribution line along each power terminal P, in this case, main bars 2 and 3 for voltage lines and main bar 4 for neutral line. The voltage line branch bars 5 are arranged in parallel with each other with an insulating distance between them, and the voltage line branch bars 5 are connected with screws 6 between one power terminal P of the branch switch 1 and the voltage line main bar 2 or 3. between the other power terminal P of the branch switch 1 and the neutral line main bar 4 is a bendable neutral line branch bar 7, in this case the fifth
As shown in FIG. 6, the main bar attachment part 9 with the elongated hole 8 formed therein and the power terminal insertion part 10 inserted into the power terminal P are connected by a vertical wall 11 perpendicular to the surfaces of each part 9, 10. At the same time, a slit 12 is formed as a bendable part on the side of the main bar attachment part 9 of the vertical wall 11, or a hollow part 1 is formed as shown in FIG.
3 or form a depression 1 as shown in Figures 8 and 9.
4 is removably connected to the neutral wire branch bar 7 via the screw 6, and in this connected state, the main bar attachment portion 9 for the neutral wire main bar 4 is connected to the neutral wire branch bar 7.
At the same time, disconnect the neutral line branch bar 7.
By bending the neutral line branch bar 7 at the bending part, the neutral line branch bar 7 is connected to the voltage line main bar 2 or 3 together with the voltage line branch bar 5 of the adjacent branch switch 1 via the screw 6. Can be done.

Next, the operation of this embodiment will be explained.

As shown in FIG. 1, a voltage line branch bar 5 and a neutral line branch bar 7 are used to connect the voltage line main bar 2 or 3 and the neutral line main bar 4 of a single-phase three-wire distribution line.
Each branch switch 1 of the 100 volt wiring connected to
When switching any one from 100 volts to 200 volts, first connect the power terminal P of the branch switch 1.
Remove the main bar attachment part 9 of the neutral line branch bar 7 attached to the neutral line main bar 4 from the neutral line main bar 4, and fold the bent part of the neutral line branch bar 7 as shown in FIG. Bottom plate 16 of the main case of the distribution board 15
The slit portion 18 of the boss 17 is integrally molded to protrude from the
By bending the neutral wire branch bar 7 at , you can easily switch the branch switch 1 of the 100 volt wiring from 100 volts to 200 volts, and the branch bar 7 for the neutral line.
By restoring the connection, the branch switch 1 of the 200 volt wiring can be easily switched from the 200 volt wiring to the 100 volt wiring.

(Effects of the invention) The present invention arranges three main bars of a single-phase three-wire distribution line in parallel along each power terminal of the branch switches arranged in a row, and connects each power terminal of the branch switches to the main bar. The voltage lines are removably connected via screws with a voltage line branch bar, and the bendable neutral line branch bar is connected between each power terminal of the branch switch and the neutral line of the main bar with screws. By bending the branch bar for the neutral line, the branch bar for the neutral line can be connected to the voltage line of the main bar together with the branch bar for the voltage line of the adjacent branch switch via screws. located on a single-phase three-wire distribution board connected to the

As a result, the present invention has a simple structure and can easily switch the power wiring of the branch switch from either 100 volts or 200 volts to the other.
Since there is no need to remove the neutral line branch bar from the power terminal of the branch switch at the time of this switching, it is possible to prevent the neutral line branch bar from being lost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is an enlarged view of the main part thereof, FIGS. 3 and 4 are perspective views showing the state in which the neutral line branch bar 7 is used, and FIG. The figure shows a front view of the neutral wire branch bar 7, FIG. 6 is a left side view of FIG. 5, and FIG. 8 is a side view of the neutral line branch bar 7, FIG. It is a left side view of the figure. 1... Branch switch, 2, 3... Main bar for voltage line, 4... Main bar for neutral line, 5... Branch bar for voltage line, 6... Screw, 7... Branch bar for neutral line. , 9...Main bar attachment part, 10...Power terminal insertion part, 11...Vertical wall, 12...Slit, 1
3... Recessed portion, 14... Recess 14, P... Power terminal.

Claims (1)

[Scope of utility model registration request] Three main bars of a single-phase three-wire distribution line are arranged in parallel along each power terminal of the branch switches arranged in a row, and a voltage line branch is established between each power terminal of the branch switch and the voltage line of the main bar. At the same time, each power terminal of the branch switch and the neutral line of the main bar are connected removably via a screw, and a branch bar for the neutral line that can be bent is connected between each power terminal of the branch switch and the neutral line of the main bar. By bending the neutral line branch bar, the neutral line branch bar is connectably connected to the voltage line of the main bar together with the voltage line branch bar of an adjacent branch switch via a screw. Single-phase three-wire distribution board.