JP2862228B2 - Single-phase three-wire distribution board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-phase three-wire distribution board having a charging section voltage of 100 V to 200 V or 200 V.
And a structure for converting from V to 100V.

[0002]

2. Description of the Related Art Conventionally, a structure for converting a charged portion voltage of a single-phase three-wire distribution board from 100 V to 200 V or from 200 V to 100 V has been disclosed in Japanese Utility Model Laid-Open No. 5-50909.

In this invention, the charging section voltage is set to 100 V
To convert from 200V to 200V or from 200V to 100V, loosen the first set screw (8) and the second set screw (7) screwed to the connection bar (6), and set the second set screw (7). By rotating the upper plate (6b) of the screwed connection bar (6) by 90 degrees, the lower part of the neck (7a) of the second set screw (7) is fitted into the notch of the N-phase or Y-phase bus bar, The second set screw (7) was tightened.

[0004]

In order to switch the charging section voltage in the conventional single-phase three-wire switchboard, two first set screws (8) and a second set screw (7) must be loosened. It was troublesome, and for this reason, the driver sometimes forgot to tighten the screw after converting the charged part voltage.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional single-phase three-wire switchboard, an object of the present invention is to make it easy to convert the charging section voltage and to relax the conversion of the charging section voltage. The present invention provides a single-phase three-wire power distribution panel that prevents forgetting to tighten a screw by reducing the number of screws. On the panel, an X-phase bus bar is inserted into one pole of the branch breaker and tightened and fixed, and a voltage switching branch bar is inserted into the other pole of the branch breaker and tightened and fixed. An elongated hole is drilled, an N-phase bus bar is erected near one end of the elongated hole, and a Y-phase bus bar is erected near the other end, and receiving ends are provided at the ends of these bus bars. Parts are provided respectively, and a voltage switching metal fitting attached to the long hole is slid to one end of the long hole, and the bus bar is The voltage of the charging section is fixed by fixing means together with one of the receiving parts, the voltage switching metal fitting attached to the long hole is slid to the other end of the long hole, and fixed by the fixing means together with the other receiving part of the bus bar. Is to convert.

In the single-phase three-wire switchboard, a screw hole is provided in the voltage switching bracket, and the screw is connected to either the receiving member of the N-phase bus bar or the Y-phase bus bar and the screw of the voltage switching bracket. The hole, the long hole of the voltage switching branch bar, and the nut are inserted and fastened and fixed.

Further, in the single-phase three-wire switchboard, a projection and a screw hole are provided on the voltage switching bracket, the projection is inserted into the elongated hole of the voltage switching branch bar, and the screw is connected to the N-phase bus. It is to be inserted into any of the receiving members of the bar or the Y-phase bus bar and the screw hole of the voltage switching metal fitting and tightened and fixed.

In the single-phase three-wire switchboard, a projection and a hook portion are provided on the voltage switching bracket, and the projection is inserted and hooked into the elongated hole of the voltage switching branch bar. It is to fit into and receive the receiving portion of the N-phase bus bar or the Y-phase bus bar.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The screws of the voltage switching bracket connected to the N-phase bus bar are loosened, and the voltage switching branch bar is slid from one end to the other end of the elongated hole to receive the Y-phase bus bar. And the screw is tightened and fixed, the charged part voltage becomes 100V
To 200V, and in the opposite manner, the charging section voltage is converted from 200V to 100V.

Further, the hook of the voltage switching fitting fitted into the receiving portion of the N-phase bus bar is pulled out, and the voltage switching branch bar is slid from one end to the other end of the elongated hole, and the Y-phase bus bar is slid. When the hooking part is fitted into the receiving part, the charging part voltage becomes 100
The voltage is converted from V to 200 V, and the charging section voltage is converted from 200 V to 100 V when performed in the reverse manner.

[0011]

1 to 3 show a first embodiment of a single-phase three-wire switchboard according to the present invention. Hereinafter, the present invention will be described with reference to these drawings.

In the single-phase three-wire switchboard 1, an X-phase bus bar X is inserted into one pole 2a of a branch breaker 2 and fastened and fixed, and a voltage switching branch bar is connected to the other pole 2b of the branch breaker 2. 3 is inserted and tightened and fixed.
A N-phase bus bar N is provided near one end of the slot 3a.
And a Y-phase bus bar Y is provided near the other end, and receiving portions N1 and Y1 are provided at ends of the bus bars N and Y.
Are provided, and the voltage switching metal fitting 4 is attached to the long hole 3a.

A screw hole 4a is provided in the voltage switching bracket, and the screw 5 is connected to a receiving member N of either the N-phase bus bar N or the Y-phase bus bar Y.
1, Y1, the screw hole 4a of the voltage switching metal fitting 4, the long hole 3a of the voltage switching branch bar 3, and the nut 6, and tightened and fixed.

Loosen the screw 5 of the voltage switching bracket 4 connected to the N-phase bus bar N, and insert the voltage switching branch bar 3 into the elongated hole 3.
a from one end to the other end, and the N-phase bus bar N
The receiving portion N1 is removed, and connected to the receiving portion Y1 of the Y-phase bus bar Y, and the screw 5 is tightened and fixed.
Is converted to 00V, and the charging section voltage becomes 20
It is converted from 0V to 100V.

FIG. 4 shows a second embodiment of the single-phase three-wire switchboard according to the present invention. Hereinafter, the present invention will be described with reference to the drawings.

In the single-phase three-wire switchboard 11, an X-phase bus bar X is inserted into one pole of the branch breaker and fastened and fixed, and a voltage switching branch bar 13 is inserted into the other pole of the branch breaker. A long hole 13a is bored in the voltage switching branch bar 13, an N-phase bus bar N is erected near one end of the long hole 13a, and a Y-phase bus bar N is protruded near the other end. Y is erected,
Receiving portions N2 and Y2 are provided at ends of these bus bars N and Y, respectively, and a voltage switching metal fitting 14 is attached to the elongated hole 13a.

A screw hole 14a and a projection 1
4b, the projection 14b is inserted into the long hole 13a of the branching bar 13 for voltage switching, and the screw 15 is connected to the receiving member N2, Y2 of either the N-phase bus bar N or the Y-phase bus bar Y by voltage switching. It is inserted into the screw hole 14a of the metal fitting 14, and tightened and fixed.

The screw 15 of the voltage switching fitting 14 connected to the N-phase bus bar N is loosened, and the voltage switching branch bar 13 is slid from one end of the long hole 13a to the other end thereof. The receiving portion N2 is removed, and the receiving portion Y2 of the Y-phase bus bar Y is removed.
And the screw 5 is tightened and fixed.
The voltage is converted from V to 200 V, and the charging section voltage is converted from 200 V to 100 V when performed in the reverse manner.

FIG. 5 shows a third embodiment of the single-phase three-wire switchboard according to the present invention. Hereinafter, the present invention will be described with reference to the drawings.

In the single-phase three-wire distribution board 21, an X-phase bus bar X is inserted into one pole of the branch breaker and fastened and fixed, and a voltage switching branch bar 23 is inserted into the other pole of the branch breaker. An elongated hole 23a is formed in the voltage switching branch bar 23, an N-phase bus bar N is erected near one end of the elongated hole 23a, and a Y-phase bus bar N is installed near the other end. Y is erected,
Receiving portions N3 and Y3 are provided at ends of these bus bars N and Y, respectively, and a voltage switching metal fitting 24 is attached to the elongated hole 23a.

A projection 24a and hooks 24b, 24c are provided on the voltage switching bracket 24, and the projection 24a is inserted into and hooked into the elongated hole 23a of the voltage switching branch bar 23.
4c is a receiving portion N3 of the X-phase bus bar N or the Y-phase bus bar Y.
It fits and locks in Y3.

The locking portion 24b of the voltage switching fitting 24 fitted in the receiving portion N3 of the N-phase bus bar N is pulled out, and is slid from one end of the long hole 23a of the voltage switching branch bar 23 to the other end. When the hooking portion 24c is fitted and hooked into the receiving portion Y3 of the Y-phase bus bar Y, the charging portion voltage is converted from 100V to 200V.
It is converted to 00V.

[0023]

As described above, in the single-phase three-wire distribution board according to the present invention, the X-phase bus bar is inserted into one pole of the branch breaker, fixed by tightening, and the voltage is applied to the other pole of the branch breaker. A switching branch bar is inserted and tightened and fixed. An elongated hole is formed in the voltage switching branch bar, and an N-phase bus bar is erected near one end of the elongated hole and near the other end. Has a Y-phase bus bar erected,
Receiving portions are provided at the ends of these bus bars, respectively, and the voltage switching metal fittings attached to the elongated holes are slid to one end of the elongated holes and fixed together with one receiving portion of the bus bars by fixing means, The voltage switching metal fitting attached to the long hole is slid to the other end of the long hole, and is fixed together with the other receiving portion of the bus bar by a fixing means, thereby converting the voltage of the charging portion. The voltage can be converted, and the voltage conversion of the charging section can be reliably performed only by loosening and retightening one screw, so that there is an effect that the screw is not forgotten to be tightened.

In the single-phase three-wire switchboard, a screw hole is provided in the voltage switching bracket, and the screw is connected to either the receiving member of the N-phase bus bar or the Y-phase bus bar and the screw of the voltage switching bracket. By inserting the hole, the long hole of the voltage switching branch bar and the nut and tightening and fixing it, it is possible to convert the charged part voltage very easily, and loosen one screw and retighten it. Can be surely converted, so that there is an effect that the user does not forget to tighten the screw.

In the single-phase three-wire switchboard, a projection and a screw hole are provided on the voltage switching bracket, and the projection is inserted into the elongated hole of the voltage switching branch bar, and the screw is connected to the N-phase bus. By inserting either the bar or the Y-phase bus bar into the screw hole of the voltage switching bracket and tightening and fixing, it is possible to convert the charged part voltage very easily and loosen one screw. Since the voltage conversion of the charging section can be reliably performed only by retightening, there is an effect that forgetting to tighten the screw is eliminated.

Further, in the single-phase three-wire switchboard, a projection and a hook are provided on the voltage switching bracket, and the projection is inserted into and hooked into the elongated hole of the voltage switching branch bar. By fitting into the receiving part of the N-phase bus bar or the Y-phase bus bar, the voltage of the charged part can be converted very easily, and the voltage conversion of the charged part can be surely performed without loosening or tightening the screw. Since it can be done, there is an effect that the forgetting of the screw is completely eliminated.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view of a first embodiment of a single-phase three-wire switchboard according to the present invention.

FIG. 2 is a perspective explanatory view of a first embodiment of the single-phase three-wire switchboard according to the present invention.

FIG. 3 is an explanatory side view of the first embodiment of the single-phase three-wire switchboard according to the present invention.

FIG. 4 is a perspective explanatory view of a second embodiment of the single-phase three-wire switchboard according to the present invention.

FIG. 5 is a perspective explanatory view of a third embodiment of the single-phase three-wire switchboard according to the present invention.

[Explanation of symbols]

1 ... single-phase three-wire distribution board, 2 ... branch breaker, 3
... Voltage switching branch bar, 4 ... Voltage switching bracket, 4
a: long hole, 5: screw, X: X-phase bus bar,
Y: Y-phase bus bar, N: N-phase bus bar, Y1 ·
..Receiver, N1 ... Receiver.

Claims (4)

(57) [Claims] In a single-phase three-wire switchboard, an X-phase bus bar is inserted and fastened and fixed to one pole of a branch breaker, and a voltage switching branch bar is inserted and tightened to the other pole of the branch breaker. A long hole is bored in the voltage switching branch bar, an N-phase bus bar is erected near one end of the long hole, and a Y-phase bus bar is erected near the other end. A receiving portion is provided at each end of these bus bars, and the voltage switching metal fitting attached to the elongated hole is slid to one end of the elongated hole, and is fixed together with one receiving portion of the bus bar by fixing means. Then, slide the voltage switching bracket attached to the long hole to the other end of the long hole,
A single-phase three-wire switchboard, wherein the voltage of the charging part is converted by fixing the charging part together with the other receiving part of the bus bar by fixing means. 2. In the single-phase three-wire switchboard, a screw hole is provided in the voltage switching bracket, and a screw is connected to either a receiving member of an N-phase bus bar or a Y-phase bus bar and the screw of the voltage switching bracket. The single-phase three-wire distribution board according to claim 1, wherein the single-phase three-wire distribution board is inserted into the hole, the long hole of the voltage switching branch bar, and the nut and fastened and fixed. 3. In the single-phase three-wire switchboard, a projection and a screw hole are provided on the voltage switching bracket, and the projection is inserted into a long hole of the voltage switching branch bar, and the screw is connected to the N-phase bus bar. The single-phase three-wire distribution board according to claim 1, wherein the single-phase three-wire distribution board is inserted into one of a bar or a Y-phase bus bar and the screw hole of the voltage switching bracket and fastened and fixed. 4. In the single-phase three-wire switchboard, a projection and a hook are provided on the voltage switching bracket, and the projection is inserted into and hooked into a long hole of the voltage switching branch bar. The single-phase three-wire distribution board according to claim 1, wherein the single-phase three-wire distribution board is fitted into a receiving portion of the N-phase bus bar or the Y-phase bus bar.