JP6668155B2 - Switching switch - Google Patents

Description

  The present invention relates to a switching switch for selecting and connecting one of two circuits to one circuit.

  When a power failure occurs, there is a distribution board that can reduce the occurrence of failure and damage due to the occurrence of a power failure by switching the power supply of a specific electric device such as an emergency light or a refrigerator from a commercial power supply to a distributed power supply such as a storage battery. For example, in Patent Document 1, when a power failure occurs by installing a switching switch in a distribution board, a specific electric device can be switched from a commercial power supply to a distributed power supply such as a storage battery, and can be continuously operated.

JP 2016-39755 A

The distribution board disclosed in Patent Document 1 is configured to switch power by a switching switch for a specific load connected to both a commercial power supply and a distributed power supply. A large installation space was required for the wiring of the secondary side electric circuit and the installation of the earth leakage breaker for the distributed power supply.
As a result, the distribution board became large, and in some cases it was housed in a distribution board case separated by a circuit dedicated to commercial power and a specific load circuit that could supply power from both the commercial power and the distributed power. Was.

  In view of such problems, an object of the present invention is to provide a switching switch capable of forming a circuit for switching between a commercial power supply and a distributed power supply such as a storage battery in a small space.

In order to solve the above problem, the invention according to claim 1 is characterized in that the movable handle arranged in the housing is tilted forward or backward by operating the operation handle arranged on the upper surface of the housing, so that the movable contact in the housing is A switching switch for switching a connection destination of a movable contact by selectively inclining between a pair of fixed contacts arranged in front and back and contacting one of the fixed contacts, wherein a first circuit connection connected to one of the fixed contacts A terminal is arranged on the front side of the housing, while a second circuit connection terminal connected to the other fixed contact and a third circuit connection terminal connected to the movable contact are arranged adjacent to the left and right sides of the rear surface of the housing. The circuit connection terminal and the third circuit connection terminal are copper bar type terminals that enable connection of plug-in type terminals of the branch breaker and the earth leakage breaker.
According to this configuration, it is possible to directly connect a leakage breaker for a distributed power system in which a branch breaker, a storage battery, and the like are connected to the switching switch, and wiring of a secondary-side electric circuit from the switching switch to the branch breaker. And no wiring is required from the earth leakage breaker for the distributed power system to the switching switch. Therefore, if there is only the installation space for the switching switch, the branch breaker, and the earth leakage breaker, for example, a power supply switching circuit can be assembled and the installation can be performed in a small space.

According to a second aspect of the present invention, in the configuration according to the first aspect, the first to third circuit connection terminals, the movable contact, and the pair of fixed contacts are configured in triplicate and correspond to a single-phase three-wire circuit. The three copper bar terminals constituting the two-circuit connection terminal and the third circuit connection terminal are arranged so as to overlap each other, and the copper bar-type terminal of the third circuit connection terminal is formed wide. Thus, a plurality of branch breakers can be connected adjacently.
According to this configuration, a switchgear can be assembled in a small space into a residential distribution panel that branches by drawing in a single-phase three-wire circuit, and a plurality of branch breakers can be directly connected, greatly reducing installation space. it can.

  According to the present invention, it is possible to directly connect a leakage breaker for a distributed power system in which a branch breaker, a storage battery, and the like are connected to a switching switch, and wiring of a secondary-side electric circuit from the switching switch to the branch breaker. And no wiring is required from the earth leakage breaker for the distributed power system to the switching switch. Therefore, if there is only the installation space for the switching switch, the branch breaker, and the earth leakage breaker, for example, a power supply switching circuit can be assembled and the installation can be performed in a small space.

It is a perspective view which shows an example of the switching switch which concerns on this invention, and also shows the connected branch breaker and earth leakage breaker. It is a top view of a switching switch, and also shows the connected branch breaker and earth leakage breaker. It is an internal circuit diagram. FIG. 3 is a sectional view taken along line AA. It is BB sectional drawing. It is CC sectional drawing. It is CC sectional view taken on the line in the state where the switching switch was connected to one side.

Embodiments embodying the present invention will be described in detail with reference to the drawings. The perspective view of FIG. 1 and the plan view of FIG. 2 show an example of the switching switch according to the present invention, and additionally show a connected branch breaker (specific branch breaker) and an earth leakage breaker. 1 is a switching switch, 2 is a branch breaker, 3 is an earth leakage breaker, and shows a configuration used for a single-phase three-wire circuit. 1 and 2 are shown inverted left and right.
In the switching switch 1, an operation handle 11 for switching operation is disposed on the upper surface of the housing 10, and one fixed contact 17A of a pair of fixed contacts 17 (17A, 17B) described later is provided forward (left side in FIG. 1). A first circuit connection terminal 12 (first voltage pole terminal 12a, neutral pole terminal 12b, second voltage pole terminal 12c) connected to the housing 10 is disposed on the rear surface (the right side shown in FIG. 1) of the housing 10. A second circuit connection terminal 13 (first voltage pole terminal 13a, neutral pole terminal 13b, second voltage pole terminal 13c) connected to the other fixed contact 17B is arranged. Further, third circuit connection terminals 14 (first voltage pole terminal 14a, neutral pole terminal 14b, and second voltage pole terminal 14c) connected to a movable contact 15 described later are also arranged on the back surface. Reference numeral 5 denotes a terminal cover for protecting the terminals.

  The first circuit connection terminal 12 is a screw type terminal for connecting and fixing a cable (not shown) with the screw 6, and is connected three in each of the left and right directions. As shown in FIG. 12b and the second voltage pole terminal 12c. On the other hand, the second and third circuit connection terminals 13 and 14 are arranged adjacent to a flat rising surface, each terminal is formed of a horizontally long copper bar type terminal, and three copper bar type terminals are arranged in the vertical direction. They are arranged side by side. From above, neutral pole terminals 13b and 14b, first voltage pole terminals 13a and 14a, and second voltage pole terminals 13c and 14c are arranged. In particular, the third circuit connection terminal 14 is formed wide so that a plurality of branch breakers 2 can be connected adjacently.

  The branch breaker 2 is schematically shown, and an operation lever for opening and closing and a secondary terminal are omitted. However, the primary terminal 21 is a plug-in type terminal formed by providing a cutout in the lateral direction on the back surface of the branch breaker 2 as shown in FIG. 1, and a copper bar type terminal ( The third circuit connection terminal 14) is sandwiched and connected from above and below. The primary terminal 21 has three terminals arranged vertically and arranged from above with a neutral pole terminal 21b, a first voltage pole terminal 21a, and a second voltage pole terminal 21c. It is configured to be directly connectable to the connection terminal 14.

  The earth leakage breaker 3 has substantially the same shape as the branch breaker, the operation lever 31 is arranged on the upper surface, the primary terminal 32 is arranged on the inclined front surface, and the secondary terminal 33 is arranged on the rear surface. . Both terminals are vertically arranged in triplicate, the primary terminal 32 is formed by a quick connection terminal, and the secondary terminal 33 is formed by providing a cutout in the horizontal direction similarly to the primary terminal 21 of the branch breaker 2. It is a plug-in type terminal that can be directly connected to the second circuit connection terminal 13 of the switching switch 1.

FIG. 3 is an internal circuit diagram of the switching switch 1. As shown in FIG. 3, each of the connection terminals 12 (12a to 12c), 13 (13a to 13c), and 14 (14a to 14c) is configured in triplicate. The third circuit connection terminal 14 performs switching connection between the first circuit connection terminal 12 and the second circuit connection terminal 13 by operating the operation handle 11, and assumes three postures including a neutral open state where no connection is made. It is selectable.
Specifically, when the switching switch 1 is used in a circuit for switching the power supply from the commercial power supply to the storage battery in the event of a power failure, the third circuit connection terminal 14 is connected to the electrical device (specific load) via the branch breaker (specific branch breaker) 2. Is connected, a first circuit connection terminal 12 is connected to a commercial power supply circuit connected to a commercial power supply, and a second circuit connection terminal 13 is connected to a storage battery system circuit including a storage battery via an earth leakage breaker 3. The power supply is switched by operating the operation handle 11.

4 to 7 are cross-sectional views of the switching switch 1 cut at different portions, and the internal structure and operation will be described below with reference to the drawings. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 2, and shows an internal connection structure of three first voltage pole terminals 12a, 13a, and 14a.
As shown in FIG. 4, a movable contact 16 a having movable contacts 15 on both front and rear sides is disposed in the housing 10 so as to hang below the operation handle 11, and a pair of fixed contacts 17 (17 Aa, 17 A, 17Ba) is arranged.
The movable contact 15 is connected to the first voltage pole terminal 14a of the third circuit connection terminal 14 via the movable contact 16a and the flexible conductor 18 connected to the movable contact 16a. One fixed contact 17Aa disposed in the front is connected to the first voltage pole terminal 12a of the first circuit connection terminal 12 via the copper bar 7a, and the other fixed contact 17Ba disposed in the rear is connected via the copper bar 7b. Connected to the first voltage pole terminal 13a (shown in FIG. 1) of the second circuit connection terminal 13.

FIG. 5 is a sectional view taken along the line BB, and shows the internal connection structure of the three neutral pole terminals 12b, 13b, and 14b. As shown in FIG. 5, a movable contact 16b having movable contacts 15 on both front and rear sides is disposed so as to hang down below the operation handle 11, and a pair of fixed contacts 17 (17Ab, 17Bb) are disposed before and after the movable contact 16b. ing.
The movable contact 15 is connected to the neutral pole terminal 14b of the third circuit connection terminal 14 via the movable contact 16b and the flexible conductor 18, as in the structure of the first voltage pole described above. One fixed contact 17Ab arranged in the front is connected to the neutral pole terminal 12b of the first circuit connection terminal 12 via the copper bar 7a, and the other fixed contact 17Bb arranged in the rear is connected via the copper bar 7b. The second circuit connection terminal 13 is connected to a neutral pole terminal 13b (shown in FIG. 1).

FIG. 6 is a cross-sectional view taken along line CC, and shows an internal connection structure of three second voltage pole terminals 12c, 13c, and 14c. As shown in FIG. 6, a movable contact 16c having movable contacts 15 on both front and rear sides is disposed so as to hang below the operation handle 11, and a pair of fixed contacts 17 (17Ac, 17Bc) are disposed before and after the movable contact 16c. ing.
The movable contact 15 is connected to the second voltage pole terminal 14c of the third circuit connection terminal 14 via the movable contact 16c and the flexible conductor 18, as in the terminal structure of the first voltage pole described above. Further, one fixed contact 17Ac arranged in the front is connected to the second voltage pole terminal 12c of the first circuit connection terminal 12 via the copper bar 7a, and the other fixed contact 17Bc arranged in the rear is connected to the copper bar 7b. Is connected to the second voltage pole terminal 13c of the second circuit connection terminal 13 (shown in FIG. 1).

  The switching switch 1 configured as described above is switched as follows. The movable contact 16 is configured to rotate back and forth by operating the operation handle 11, and when the operation handle 11 is tilted forward, the movable contact 16 also rotates forward and the operation handle 11 is tilted rearward. To rotate. As a result, the movable contact 15 is selectively connected to one fixed contact 17 by operating the operation handle 11. For example, when the operation handle 11 is tilted rightward (forward) as shown in FIG. 2, the movable contact 5 contacts the front fixed contact 17A, and the first circuit connection terminal 12 and the third circuit connection terminal 14 are connected. . FIG. 7 is a cross-sectional view taken along line CC in this connection state, that is, a state in which the operation handle 11 is tilted forward.

In this way, it is possible to directly connect the branch breaker 2 and the earth leakage breaker 3 for the distributed power supply system in which the storage battery and the like are connected to the switching switch 1, and the secondary side electric circuit from the switching switch 1 to the branch breaker 2 is connected. No wiring is required, and no wiring is required from the earth leakage breaker 3 for the distributed power system to the switching switch 1. Therefore, if there is only the installation space for the switching switch 1, the branch breaker 2, and the earth leakage breaker 3, for example, a power supply switching circuit can be assembled, and the installation can be performed in a small space.
In addition, since a plurality of branch breakers 2 can be connected to a residential distribution panel that branches by drawing in a single-phase three-wire circuit, even if there are a plurality of branch circuits that can switch power, the switching switch 1 The installation space of the power distribution line accompanying the installation can be greatly reduced.
Furthermore, since the branch breaker 2 and the earth leakage breaker 3 are arranged adjacent to each other, they can be assembled in a minimum space including the switching switch 1.

  Although the above embodiment has shown the configuration used for the single-phase three-wire circuit, it can be applied to a three-phase three-wire circuit and also to a single-phase two-wire circuit. .

  1. Switching switch, 2. Branch breaker, 3. Earth leakage breaker, 10. Housing, 11. Operation handle, 12. First circuit connection terminal, 13. Second circuit connection terminal, 14. 3rd circuit connection terminal, 15 movable contact, 16 movable contact, 17 fixed contact, 21 primary terminal, 33 secondary terminal.

Claims (2)

By tilting the operation handle disposed on the upper surface of the housing forward or backward, the movable contact disposed in the housing is selectively tilted between a pair of fixed contacts disposed before and after the movable contact in the housing. A switching switch that contacts one of the movable contacts to switch the connection destination of the movable contact,
A first circuit connection terminal connected to one of the fixed contacts is disposed on the front side of the housing;
A second circuit connection terminal connected to the other fixed contact and a third circuit connection terminal connected to the movable contact are disposed adjacent to the left and right sides of the housing rear surface;
The said 2nd circuit connection terminal and the 3rd circuit connection terminal are copper bar type terminals which enable connection of the plug-in type terminal of a branch breaker and an earth leakage breaker, The switching switch characterized by the above-mentioned. The first to third circuit connection terminals, the movable contact, and the pair of fixed contacts are configured in triples and correspond to a single-phase three-wire circuit,
The three copper bar-type terminals constituting the second circuit connection terminal and the third circuit connection terminal are arranged so as to vertically overlap each other,
The switching switch according to claim 1, wherein the copper bar-type terminal of the third circuit connection terminal is formed to be wide so that a plurality of branch breakers can be connected adjacently.

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