Change-over switch

Abstract

To provide a changeover switch that is less prone to a short circuit.SOLUTION: A changeover switch that switches a power supply that supplies electricity to a load system including a load to a first power system or a second power system, includes a first side terminal portion to which power from the first power supply system is input, a second side terminal portion to which power from the second power supply system is input, and a load-side terminal portion that outputs power from the first power supply system input to the first-side terminal portion or power from the second power supply system input to the second-side terminal portion to the load system. The arrangement areas of the first-side terminal portion, the second-side terminal portion, and the load-side terminal portion are set at different locations when viewed from the front.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a changeover switch for switching a connection state between a plurality of power supply systems and a load. [Background technology]

[0002] As an example of the above-mentioned switching switch, as shown in Figure 3 of Patent Document 1, there is known one that has a terminal (referred to as the first terminal) to which a first load branch breaker that receives power from a commercial power source is connected, a terminal (referred to as the second terminal) to which a distributed power source is connected, and a terminal (referred to as the third terminal) to which a second load main breaker that is the destination of the power from the commercial power source received via the first load branch breaker or the power received from the distributed power source is connected.

[0003] Under normal circumstances, this switching switch supplies power from the commercial power source to the second load main breaker (the load connected to the second load main breaker), and in the event of a power outage or other abnormality in the commercial power source, it is able to supply power from the distributed power source to the second load main breaker instead of the commercial power source. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2017-225230 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned conventional changeover switch, for example, when work is performed on the first terminal, the second terminal, and the third terminal (such as installation work of distribution materials, replacement work, and inspection work) or when work is performed around the first terminal, the second terminal, and the third terminal, the terminals may be short-circuited.

[0006] In view of the above circumstances, an object of the present invention is to provide a changeover switch that is less susceptible to short circuits. [Means for solving the problem]

[0007] The changeover switch of the present invention comprises: A changeover switch that switches a power source that supplies electricity to a load system including a load between a first power source system and a second power source system, a first terminal portion to which power from a first power supply system is input; a second side terminal portion to which power from a second power supply system is input; a load side terminal unit that outputs to a load system electric power from a first power supply system input to the first side terminal unit or electric power from a second power supply system input to the second side terminal unit, The first side terminal portion, the second side terminal portion, and the load side terminal portion are arranged in different areas when viewed from the front.

[0008] In the changeover switch having the above configuration, the respective arrangement areas of the first side terminal portion, the second side terminal portion, and the load side terminal portion are set in different locations when viewed from the front, so that the first side terminal portion, the second side terminal portion, and the load side terminal portion are arranged so as not to overlap with each other.

[0009] Therefore, in a changeover switch having the above configuration, the work areas for the first side terminal portion, the second side terminal portion, and the load side terminal portion, as well as the areas for pulling out wiring from the first side terminal portion, the second side terminal portion, and the load side terminal portion, are less likely to overlap, making it less likely that short circuits will occur between the first side terminal portion, the second side terminal portion, and the load side terminal portion.

[0010] The changeover switch of the present invention comprises: a switching body capable of switching an electrical connection state between the first terminal portion and the second terminal portion and the load terminal portion, The load side terminal portion may be provided at a tip of a terminal conductor extending from the switch body portion.

[0011] According to the changeover switch having the above configuration, the load terminal can be easily arranged at a position away from the first side terminal portion and the second side terminal portion, so that a short circuit becomes less likely to occur.

[0012] In the changeover switch of the present invention, The first terminal portion and the second terminal portion are arranged side by side in a left-right direction perpendicular to a front-rear direction, The load side terminal portion may be arranged to be aligned with the first side terminal portion or the second side terminal portion in a vertical direction perpendicular to the front-rear direction and the left-right direction.

[0013] According to the changeover switch having the above configuration, the first side terminal portion and the second side terminal portion to which electric power is input are disposed apart from each other, thereby making it difficult for a short circuit to occur.

[0014] In the changeover switch of the present invention, The first terminal portion and the second terminal portion are arranged side by side in a vertical direction perpendicular to a front-rear direction, The load side terminal portion may be arranged to the right of the first side terminal portion and the second side terminal portion in a left-right direction perpendicular to the front-rear direction and the up-down direction.

[0015] In the changeover switch having the above-mentioned configuration, by arranging the first side terminal portion and the second side terminal portion to which electric power is input at a distance from each other, it is possible to make a short circuit less likely to occur.

[0016] In the changeover switch of the present invention, a switching body capable of switching an electrical connection state between the first terminal portion and the second terminal portion and the load terminal portion, The first side terminal portion and the second side terminal portion may be arranged facing opposite sides to each other in the left-right direction.

[0017] In a changeover switch having the above configuration, the distribution material connected to the first terminal portion and the distribution material connected to the second terminal portion extend in opposite directions, making it less likely that a short circuit will occur.

[0018] The changeover switch of the present invention comprises: a switching body capable of switching an electrical connection state between the first terminal portion and the second terminal portion and the load terminal portion, a switching control unit that controls an operation of switching an electrical connection state between the first side terminal unit and the second side terminal unit of the switching main body and the load side terminal unit, The first terminal portion and the second terminal portion are provided on the switching body portion, The load side terminal portion may be provided at a position adjacent to the switching control portion.

[0019] Even with the above configuration, the first side terminal portion, the second side terminal portion, and the load side terminal portion can be arranged so that they do not overlap in the front-to-rear direction, making it less likely for a short circuit to occur between the first side terminal portion, the second side terminal portion, and the load side terminal portion. Effect of the Invention

[0020] As described above, the changeover switch of the present invention can provide the excellent effect of making short circuits less likely to occur. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a perspective view of a changeover switch according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a front view of the changeover switch according to the embodiment. [Diagram 3] FIG. 3 is a partial enlarged view of the changeover switch according to the embodiment, and is a partial enlarged view of a range including a first side terminal portion. [Figure 4] FIG. 4 is a partial enlarged view of the changeover switch according to the embodiment, and is a partial enlarged view of a range including the second side terminal portion. [Diagram 5]FIG. 5 is a partial enlarged view of the changeover switch according to the embodiment, and is a partial enlarged view of a range including a load side terminal portion. [Figure 6] FIG. 6 is a partial cross-sectional view of the changeover switch according to the embodiment, and is a partial cross-sectional view of a part of the wiring cover portion. [Figure 7] FIG. 7 is a partial cross-sectional view taken along line VII-VII in FIG. 6, excluding the mechanical exterior portion. [Figure 8] FIG. 8 is an explanatory diagram of the operation of the changeover switch built-in panel according to the embodiment, and is an explanatory diagram of a state in which the first power supply system and the load system are connected. [Figure 9] FIG. 9 is an explanatory diagram of the operation of the changeover switch built-in panel according to the embodiment, and is an explanatory diagram of a state in which the second power supply system and the load system are connected. [Figure 10] FIG. 10 is an explanatory diagram of a changeover switch built-in board in which the changeover switch according to the embodiment is incorporated. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A changeover switch according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0023] The change-over switch is configured to perform a switching operation for switching the power source that supplies electricity to a load system including a load between a first power source system or a second power source system, and may be incorporated, for example, in a change-over switch-integrated panel 4 as shown in FIG. 8.

[0024] The changeover switch-equipped panel 4 shown in Figure 8 is composed of, in addition to the changeover switch 1, a first circuit section 5 electrically connected to the first power supply system P1, a second circuit section 6 electrically connected to the second power supply system P2, a load circuit section 7 to which the load system W1 is connected, a relay circuit section 8 electrically connected to the first circuit section 5 and the second power supply system P2, and a housing 9 (see Figure 10) that accommodates the first circuit section 5, the second circuit section 6, the load circuit section 7, the relay circuit section 8, and the changeover switch 1.

[0025] For example, as shown in FIG. 8, when a switching switch-equipped panel 4 is installed in a house, a first power supply system P1 through which commercial power flows, a second power supply system P2 including a distributed power source, and a load system W1 including a load W10 are electrically connected to the switching switch-equipped panel 4.

[0026] The first power supply system P1 is a power supply system through which commercial power flows. The first power supply system P1 includes a first power source P10 which is a commercial power source (such as a power generation facility) and a first power distribution line P11 which is electrically connected to the first power source P10.

[0027] The second power supply system P2 is a power supply system including a distributed power source.

[0028] The second power supply system P2 includes a second power supply P20 which is a distributed power supply, a primary side external electrical circuit (referred to as a relay power distribution circuit in this embodiment) P21 electrically connected to the primary side of the second power supply P20, and a secondary side external electrical circuit (referred to as a second power distribution circuit in this embodiment) P22 electrically connected to the secondary side of the second power supply P20.

[0029] The second power source P20 in this embodiment is configured by a storage battery. That is, the second power source system P2 is a power source system capable of charging and discharging the second power source P20.

[0030] The second power source P20 of the present embodiment is connected to a solar panel and configured to be charged by receiving power generated by a solar cell.

[0031] The relay power distribution line P21 is an electric path through which the power supplied to the second power source P20 flows. When the second power source P20 is configured with a power conditioner and a storage battery, the relay power distribution line P21 carries power for operating the power conditioner. The second power distribution line P22 is an electric path through which the power discharged from the second power source P20 flows.

[0032] The load system W1 includes a load W10 and a load distribution line W11 electrically connected to the load W10. In this embodiment, the load W10 is a distribution board. Specifically, the distribution board includes a main switch, a bus bar, a branch switch, and a distribution housing.

[0033] As shown in FIG. 1, the changeover switch 1 has a changeover main body 2 having a changeover circuit C (see FIG. 8) for changing over the power source supplying electricity to the load system W1 between a first power source system P1 and a second power source system P2, and a changeover control unit 3 for controlling the changeover operation by the changeover main body 2 (changeover circuit C).

[0034] The switching main body 2 has a first side terminal unit 20 to which power from the first power supply system P1 is input, a second side terminal unit 21 to which power from the second power supply system P2 is input, a load side terminal unit 22 that outputs the power from the first power supply system P1 input to the first side terminal unit 20, or the power from the second power supply system P2 input to the second side terminal unit 21, to the load system W1, and an exterior unit 23 that forms part of the exterior of the switching switch 1 itself.

[0035] In this embodiment, the direction in which the front (the surface facing the front when installed) and back (the surface facing the back when installed) of the changeover switch 1 are aligned is referred to as the front-to-rear direction, a direction perpendicular to the front-to-rear direction is referred to as the first direction, and a direction perpendicular to the front-to-rear direction and the first direction is referred to as the second direction.

[0036] Moreover, the plane direction of a plane formed by the first direction and the second direction is referred to as the plane direction.

[0037] In this embodiment, the first direction is a direction corresponding to the left-right direction when the changeover switch 1 in the installed state is viewed from the front, and one side of the first direction is the left side, and the other side of the first direction is the right side.

[0038] In addition, the second direction is a direction corresponding to the up and down directions when the changeover switch 1 in the installed state is viewed from the front, and one side of the second direction is the upward side, and the other side of the second direction is the downward side.

[0039] As shown in FIG. 2, the first side terminal portion 20 has a plurality of first side connection terminal portions 200 to which distribution materials (first side distribution materials) M1 (see FIG. 10) can be detachably attached for electrically connecting the first side terminal portion 20 itself to an external device (a device other than the changeover switch 1 itself, which in this embodiment is an electrical device 50 of the first circuit portion 5).

[0040] The first side connection terminal portion 200 is a first side terminal board 2000 that constitutes part of the switching circuit portion C, and has a first side terminal board 2000 that is fixed to the exterior portion 23 and to which the first side distribution material M1 is electrically connected, and a first side fastener 2001 for fixing the first side distribution material M1 to the first side terminal board 2000.

[0041] The changeover switch 1 of this embodiment is configured to receive power transmitted in a single-phase three-wire manner from the first power system P1 or the second power system P2 and transmit it to the load system W1, and therefore the first side terminal portion 20 has three first side connection terminal portions 200.

[0042] The three first side connection terminal portions 200 are a first side connection terminal portion (first phase connection terminal portion) 200 for the first phase, a first side connection terminal portion (second phase connection terminal portion) 200 for the second phase, and a first side connection terminal portion (third phase connection terminal portion) 200 for the third phase, respectively.

[0043] In the first side terminal portion 20, the first phase connecting terminal portion 200, the second phase connecting terminal portion 200, and the third phase connecting terminal portion 200 are arranged so as to be lined up (aligned) in the second direction.

[0044] In this embodiment, the first phase is the L2 phase, the second phase is the N phase, and the third phase is the L1 phase. In addition, in Fig. 2 and Fig. 6, the first phase terminal portion 200 is marked with the symbol "A", the second phase terminal portion 200 is marked with the symbol "B", and the third phase terminal portion 200 is marked with the symbol "C".

[0045] The second side terminal portion 21 has a plurality of second side connection terminal portions 210 to which distribution materials (second side distribution materials) M2 (see Figure 10) can be attached / detached for electrically connecting the second side terminal portion 21 itself to an external device (a device other than the changeover switch 1 itself, which in this embodiment is electrical equipment 60 of the second circuit portion 6).

[0046] The second side connection terminal portion 210 is a second side terminal board 2100 that constitutes part of the switching circuit portion C, and has a second side terminal board 2100 that is fixed to the exterior portion 23 and to which the second side distribution material M2 is electrically connected, and a second side fastener 2101 for fixing the second side distribution material M2 to the second side terminal board 2100.

[0047] As described above, the changeover switch 1 is configured to receive power transmitted from the first power system P1 or the second power system P2 in a single-phase three-wire system and transmit the power to the load system W1, and therefore the second side terminal portion 21 has three second side connection terminal portions 210.

[0048] The three second side connection terminal portions 210 are respectively a second side connection terminal portion (first phase connection terminal portion) 210 for the first phase, a second side connection terminal portion (second phase connection terminal portion) 210 for the second phase, and a second side connection terminal portion (third phase connection terminal portion) 210 for the third phase.

[0049] In the second side terminal portion 21, the first phase connecting terminal portion 210, the second phase connecting terminal portion 210, and the third phase connecting terminal portion 210 are arranged so as to be lined up (aligned) in the second direction.

[0050] Regarding the second side terminal portion 21, in Figures 2 and 6, the first phase terminal portion 210 is marked with the symbol "A", the second phase terminal portion 210 is marked with the symbol "B", and the third phase terminal portion 210 is marked with the symbol "C".

[0051] The load side terminal portion 22 has a plurality of load side connection terminal portions 220 to which distribution materials (load side distribution materials) M3 (see Figure 10) can be attached and detached for electrically connecting the load side terminal portion 22 itself to an external device (a device other than the changeover switch 1 itself, which in this embodiment is electrical equipment 70 of the load circuit portion 7).

[0052] The load side connection terminal portion 220 has a load side terminal board 2200 fixed to the exterior portion 23 and to which the load side distribution material M3 is electrically connected, and a load side fastener 2201 for fixing the load side distribution material M3 to the load side terminal board 2200.

[0053] As described above, the changeover switch 1 is configured to receive power transmitted from the first power system P1 or the second power system P2 in a single-phase three-wire system and transmit the power to the load system W1, and therefore the load side terminal section 22 has three load side connection terminal sections 220.

[0054] The three load side connection terminal portions 220 are a load side connection terminal portion (first phase connection terminal portion) 220 for the first phase, a load side connection terminal portion (second phase connection terminal portion) 220 for the second phase, and a load side connection terminal portion (third phase connection terminal portion) 220 for the third phase, respectively.

[0055] In the load side terminal portion 22, the first phase connecting terminal portion 220, the second phase connecting terminal portion 220, and the third phase connecting terminal portion 220 are arranged so as to be lined up (aligned) in the second direction.

[0056] Regarding the load side terminal portion 22, in Figs. 2 and 6, the first phase terminal portion 220 is marked with the symbol "A", the second phase terminal portion 220 is marked with the symbol "B", and the third phase terminal portion 220 is marked with the symbol "C".

[0057] Here, the switching main body 2 of this embodiment includes a terminal relay portion 24 that connects the load side terminal portion 22 and the switching circuit portion C.

[0058] The terminal relay portion 24 has a plurality of relay connection portions 240 .

[0059] As shown in Figures 6 and 7, the relay connection portion 240 has a relay conductor (terminal conductor) 2400 whose tip portion (one end portion in the longitudinal direction) is electrically connected to the load side terminal board 2200, and a relay terminal board 2401 (see Figure 7) which is fixed to the exterior portion 23 at a position different from the relay conductor 2400 and constitutes part of the switching circuit portion C.

[0060] As described above, the changeover switch 1 is configured to receive power transmitted from the first power system P1 or the second power system P2 in a single-phase three-wire system and transmit the power to the load system W1, and therefore the terminal relay unit 24 has three relay connection units 240.

[0061] The three relay connection parts 240 are a relay connection part for the first phase (first phase relay connection part) 240, a relay connection part for the second phase (second phase relay connection part) 240, and a relay connection part for the third phase (third phase relay connection part) 240, respectively.

[0062] In the terminal relay portion 24, the base end portion of the first phase relay connection portion 240 (the end portion connected to the switching circuit portion C), the base end portion of the second phase relay connection portion 240 (the end portion connected to the switching circuit portion C), and the base end portion of the third phase relay connection portion 240 (the end portion connected to the switching circuit portion C) are arranged so as to be lined up (aligned) in the second direction.

[0063] In addition, with regard to the terminal relay portion 24, in Figure 6, the first phase relay connection portion 240 is marked with the symbol "A", the second phase relay connection portion 240 is marked with the symbol "B", and the third phase relay connection portion 240 is marked with the symbol "C".

[0064] The exterior part 23 has a mechanism exterior part 230 that houses the switching circuit part C, and a wiring exterior part 231 that is provided on the outer surface of the mechanism exterior part 230.

[0065] As shown in Figure 7, the mechanical exterior part 230 has a first side mounting part 2300 to which the first side connection terminal part 200 is attached, a second side mounting part 2301 to which the second side connection terminal part 210 is attached, and a load side mounting part 2302 to which the relay connection part 240 connected to the load side connection terminal part 220 is attached.

[0066] 6, the wiring exterior part 231 is disposed on one side of the outer periphery of the changeover switch 1, and extends from the mechanism exterior part 230 toward the switching control part 3. Therefore, the wiring exterior part 231 is formed so as to straddle the mechanism exterior part 230 and the switching control part 3.

[0067] The wire exterior part 231 of this embodiment has a wire case part 2310 with an open top, and a wire lid part 2311 arranged to overlap the top surface of the wire case part 2310 (see FIG. 1).

[0068] The wiring case 2310 includes a base end case 2310a adjacent to the mechanism exterior 230 and a tip end case 2310b adjacent to the switching control unit 3.

[0069] The base end case part 2310a and the tip end case part 2310b are aligned in a direction (the second direction in this embodiment) along the one side part of the changeover switch 1. The wiring exterior part 231 in this embodiment is disposed on one side on the other side in the first direction of the changeover switch 1, with the base end case part 2310a adjacent to a side surface of the mechanism exterior part 230 that faces the other side in the first direction, and the tip end case part 2310b adjacent to a side surface of a control case 30 of the switching control part 3, which will be described later, that faces the other side in the first direction.

[0070] Inside the wiring case 2310, a wiring space for accommodating the relay conductor 2400 is formed, which extends across the base end case 2310a and the tip end case 2310b.

[0071] 2, the wiring cover 2311 includes a base end cover 2311a arranged to overlap the base end case 2310a, and a tip end cover 2311b arranged to overlap the tip end case 2310b. The base end cover 2311a is adjacent to the outer surface of the mechanism exterior 230 between the second side mounting part 2301 and the load side mounting part 2302.

[0072] Here, as shown in FIG. 6, the mechanism exterior part 230 is configured to have a first side base part 2320 for placing the first side terminal part 20, a second side base part 2321 for placing the second side terminal part 21, and a load side base part 2322 for placing the load side terminal part 22.

[0073] In this embodiment, the first side mounting portion 2300 constitutes the first side base portion 2320, the second side mounting portion 2301 constitutes the second side base portion 2321, and the load side mounting portion 2302 constitutes the load side base portion 2322.

[0074] In addition, the mechanism exterior part 230 has a first side insulating wall part 2330 erected on the first side base part 2320, a second side insulating wall part 2331 erected on the second side base part 2321, and a load side insulating wall part 2332 erected on the load side base part 2322.

[0075] 3, the first-side insulating wall portion 2330 has a first-side wiring space S1 that is open in the planar direction to accommodate the first-side distribution material M1. That is, the first-side insulating wall portion 2330 is formed so as to partially surround the periphery of the first-side connection terminal portion 200.

[0076] The first-side insulating wall portion 2330 of the present embodiment has a first wall portion 2330a erected on both sides in the second direction relative to the first-side connecting terminal portion 200, and a second wall portion 2330b erected on the other side in the first direction relative to the first-side connecting terminal portion 200. A first-side wiring space S1 is formed between the first wall portions 2330a.

[0077] 4, the second-side insulating wall portion 2331 is formed with a second-side wiring space S2 that is open in the planar direction to accommodate the second-side distribution material M2. That is, the second-side insulating wall portion 2331 is also formed so as to partially surround the periphery of the second-side connection terminal portion 210.

[0078] The second-side insulating wall portion 2331 of the present embodiment has a first wall portion 2331a erected on both sides in the second direction with respect to the second-side connecting terminal portion 210, and a second wall portion 2331b erected on one side in the first direction with respect to the second-side connecting terminal portion 210. A second-side wiring space S2 is formed between the first wall portions 2331a.

[0079] 5, the load side insulating wall portion 2332 is formed with a load side wiring space S3 that is open in the planar direction to accommodate the load side distribution material M3. That is, the load side insulating wall portion 2332 is also formed so as to partially surround the periphery of the load side connection terminal portion 220.

[0080] It has first wall portions 2332a erected on both sides in the second direction with respect to the load side connection terminal portion 220, and second wall portions 2332b erected on one side in the first direction with respect to the load side connection terminal portion 220. A load side wiring space S3 is formed between the first wall portions 2332a.

[0081] In the changeover switch 1 of this embodiment, the respective placement areas of the first side base portion 2320, the second side base portion 2321, and the load side base portion 2322 are set to different locations (non-overlapping locations) when viewed from the front, and therefore the placement areas of the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22 are also set to different locations (non-overlapping locations) when viewed from the front.

[0082] The first side base portion 2320, the second side base portion 2321 and the load side base portion 2322 are located at different ends of the changeover switch 1 in the first direction, and in this embodiment, the first side base portion 2320 is arranged at one end of the changeover switch 1 in the first direction, and the second side base portion 2321 and the load side base portion 2322 are arranged at the other end of the changeover switch 1 in the first direction.

[0083] In addition, the second side base portion 2321 and the load side base portion 2322 are lined up in the first direction at the other end portion in the first direction of the changeover switch 1, and the load side base portion 2322 is positioned at a position shifted to the other side in the second direction from the second side base portion 2321.

[0084] Accordingly, the first side terminal portion 20 is arranged at one end of the changeover switch 1 in the first direction, and the second side terminal portion 21 and the load side terminal portion 22 are arranged at the other end of the changeover switch 1 in the first direction. The second side terminal portion 21 and the load side terminal portion 22 are aligned in the first direction at the other end of the changeover switch 1 in the first direction, and the load side terminal portion 22 is arranged at a position shifted from the second side terminal portion 21 to the other side in the second direction.

[0085] Furthermore, the first side insulating wall portion 2330 and the second side insulating wall portion 2331, which are aligned in the first direction, have opposite opening directions in the surface direction, and the load side terminal portion 2332, which opens in the same direction as the second side insulating wall portion 2331, is positioned at a position shifted in the second direction relative to the second side insulating wall portion 2331 (in this embodiment, at a position shifted to the other side in the second direction relative to the second side insulating wall portion 2331).

[0086] Therefore, if the direction toward the outside in the direction of opening in the face direction of the first side insulating wall portion 2330, the direction toward the outside in the direction of opening in the face direction of the second side insulating wall portion 2331, and the direction toward the outside in the direction of opening in the face direction of the load side insulating wall portion 2332 are defined as the directions of the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22, respectively, the first side terminal portion 20 and the second side terminal portion 21 are lined up in the first direction but have opposite orientations in the first direction, and the second side terminal portion 21 and the load side terminal portion 22 have the same orientation in the first direction but are positioned at different positions in the second direction.

[0087] Therefore, each of the first side terminal portion 20, the second side terminal portion 21 and the load side terminal portion 22 does not have another terminal portion arranged in front of it (in the direction toward the outside in the direction of opening in the face direction), and the first side distribution material M1 attached to the first side terminal portion 20, the second side distribution material M2 attached to the second side terminal portion 21, and the load side distribution material M3 attached to the load side terminal portion 22 are unlikely to interfere with each other.

[0088] In addition, the arrangement position of the second side terminal portion 21 in the first direction and the arrangement position of the load side terminal portion 22 in the first direction are different from each other, and the load side terminal portion 22 is arranged on the other side of the second side terminal portion 21 in the first direction, but the arrangement position of the second side terminal portion 21 in the first direction and the arrangement position of the load side terminal portion 22 in the first direction may be the same or approximately the same, or the load side terminal portion 22 may be arranged on one side of the second side terminal portion 21 in the first direction.

[0089] The switching control unit 3 has a control case 30 adjacent to the exterior unit 23. The control case 30 is formed in a rectangular or substantially rectangular shape when viewed from the front. The outer peripheral edge of the control case 30 includes four sides, more specifically, two first sides 300 extending along a first direction and two second sides 301 extending along a second direction.

[0090] The exterior part 23 is configured to be adjacent to the first side part 300 and the second side part 301 (the first side part 300 and the second side part 301 forming a corner) that have one end intersecting with each other, among the two first sides 300 and the two second sides 301 of the control case 30. In this embodiment, the mechanism exterior part 230 is adjacent to one of the first sides 300, and the wiring case part 2310 (the tip side case part 2310b) is adjacent to one of the second sides 301.

[0091] The switching control unit 3 is switchable between a state (first power supply state) in which the first side terminal portion 20 and the load side terminal portion 22 are electrically connected and the second side terminal portion 21 and the load side terminal portion 22 are electrically disconnected as shown in FIG. 8, and a state (second power supply state) in which the first side terminal portion 20 and the load side terminal portion 22 are electrically disconnected and the second side terminal portion 21 and the load side terminal portion 22 are electrically connected as shown in FIG. 9. The switching control unit 3 is configured to switch between the first power supply state and the second power supply state (i.e., the electrical connection state between the first side terminal portion 20 and the second side terminal portion 21 and the load side terminal portion 22) by operating the switching main body portion 2.

[0092] The switching control unit 3 may be configured to automatically switch between the first power supply state and the second power supply state of the switching main body 2 in accordance with each power supply state, but may also be configured to manually switch between the first power supply state and the second power supply state, or to switch between the first power supply state and the second power supply state by remote control from outside.

[0093] Furthermore, when the switching main body 2 is configured to automatically switch between the first power supply state and the second power supply state, a control unit that performs processing for switching between the first power supply state and the second power supply state may be housed within the control case 30.

[0094] Furthermore, the switching control unit 3 may be configured, for example, to switch the switching main body 2 from the first power supply state to the second power supply state when it detects that the power supply from the first power supply system P1 has been interrupted, and to switch the switching main body 2 from the second power supply state to the first power supply state when it detects that the power supply from the first power supply system P1 has been restored.

[0095] As described above, according to the changeover switch 1 of this embodiment, the respective arrangement areas of the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22 are set at different locations when viewed from the front, so that the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22 are arranged so as not to overlap with each other.

[0096] Therefore, in the changeover switch 1, the work areas for the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22 are arranged so as not to overlap each other.

[0097] If the work areas for the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22 do not overlap, the worker can work on any of the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22 in an environment where the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22 that are not the subject of the work are located away from the worker. This makes it less likely that a short circuit will occur between the terminal portion that is the subject of the work and the terminal portion that is not the subject of the work.

[0098] Therefore, the changeover switch 1 of the present embodiment can achieve the excellent effect of making short circuits less likely to occur.

[0099] In addition, in the changeover switch 1 of this embodiment, the first side terminal portion 20 and the second side terminal portion 21, which are aligned in the first direction, are oriented in opposite directions, and the second side terminal portion 21 and the load side terminal portion 22, which have the same orientation in the first direction, are arranged in different positions in the second direction, so that the areas extending forward of each of the first side terminal portion 20, the second side terminal portion 21 and the load side terminal portion 22 do not overlap.

[0100] This also makes it difficult for the first-side distribution material M1, the second-side distribution material M2, and the load-side distribution material M3 connected to the first-side terminal portion 20, the second-side terminal portion 21, and the load-side terminal portion 22, respectively, to overlap or cross each other. Therefore, the first-side distribution material M1, the second-side distribution material M2, and the load-side distribution material M3 are each unlikely to come into contact with other distribution materials or other terminal portions, making it difficult for a short circuit to occur.

[0101] In particular, the first side distribution material M1 connected to the first side terminal portion 20 and the second side distribution material M2 connected to the second side terminal portion 21 extend in opposite directions, making it less likely that a short circuit will occur.

[0102] In this way, in the mechanical exterior part 230, the load side terminal part 22 is attached to a position overlapping with the second side terminal part 21 at the rear side in the fore-and-aft direction, but since the attachment position of the load side distribution material M3 to the load side terminal part 22 is set to a position different from the attachment position of the second side distribution material M2 to the second side terminal part 21 in the surface direction, a short circuit is less likely to occur.

[0103] In this embodiment, when viewed from the front, the second side mounting portion 2301 for mounting the second side connection terminal portion 210 and the load side mounting portion 2302 for mounting the relay connection portion 240 are arranged in positions lined up in the front-to-rear direction, so that the relay conductor 2400 is arranged in a position overlapping with the rear side in the front-to-rear direction relative to the area in front of the second side connection terminal portion 210. However, since the space between the second side mounting portion 2301 and the load side mounting portion 2302 is blocked by the base end cover portion 2311a, the second side connection terminal portion 210 and the relay connection portion 240 are insulated from each other.

[0104] Furthermore, in the changeover switch 1 of this embodiment, the first side terminal portion 20 and the second side terminal portion 21 are arranged side by side in the left-right direction (first direction) perpendicular to the front-rear direction, and the load side terminal portion 22 is arranged side by side with the first side terminal portion 20 or the second side terminal portion 21 in the up-down direction (second direction) perpendicular to the front-rear direction and the left-right direction (first direction). Therefore, the first side terminal portion 20 and the second side terminal portion 21, to which power is input, are separated from each other, making it less likely for a short circuit to occur.

[0105] It should be noted that the changeover switch 1 of the present invention is not limited to the above embodiment, and various modifications can be made thereto.

[0106] Although not specifically mentioned in the above embodiment, in the changeover switch 1, the installation area of ​​the first side terminal portion 20 and the installation area of ​​the second side terminal portion 21 are separated, and if the installation area of ​​the second side terminal portion 21 and the installation area of ​​the load side terminal portion 22 are adjacent and do not overlap, it is easier to prevent a short circuit; however, as long as the first side connection terminal portion 200, the second side connection terminal portion 210, and the load side connection terminal portion 220 themselves do not overlap when viewed from the front, the effect of suppressing a short circuit can be obtained even if the installation areas themselves overlap slightly.

[0107] In the above embodiment, the first side terminal portion 20 and the second side terminal portion 21 are arranged in the first direction, but for example, the first side terminal portion 20 and the load side terminal portion 22 may be arranged in the first direction, or the second side terminal portion 21 and the load side terminal portion 22 may be arranged in the first direction. In this case, among the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22, those whose attachment positions to the mechanical exterior portion 230 overlap in the front-rear direction may be installed in different areas in the surface direction. In addition, in the above embodiment, the terminal relay portion 24 is connected to the load side terminal portion 22, but when the above configuration is adopted, the terminal relay portion 24 may be connected to those whose attachment positions to the mechanical exterior portion 230 overlap in the front-rear direction among the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22.

[0108] In addition, the first side terminal portion 20 and the second side terminal portion 21 are arranged to be aligned in the left-right direction (first direction) perpendicular to the front-rear direction, and the load side terminal portion 22 is arranged to be aligned with the first side terminal portion 20 or the second side terminal portion 21 in the up-down direction (second direction) perpendicular to the front-rear direction and the left-right direction (first direction), but this configuration is not limited to this. For example, the first side terminal portion 20 and the second side terminal portion 21 may be arranged to be aligned in the up-down direction (first direction) perpendicular to the front-rear direction, and the load side terminal portion 22 may be arranged to the right or left of the first side terminal portion 20 and the second side terminal portion 21 in the left-right direction (second direction) perpendicular to the front-rear direction and the up-down direction (first direction).

[0109] That is, the first side terminal portion 20 and the load side terminal portion 22 may be aligned in the second direction, and the second side terminal portion 21 may be disposed at a position shifted in the first direction relative to the first side terminal portion 20 and the load side terminal portion 22, or the second side terminal portion 21 and the load side terminal portion 22 may be aligned in the second direction, and the first side terminal portion 20 may be disposed at a position shifted in the first direction relative to the second side terminal portion 21 and the load side terminal portion 22. Even in this case, the first side terminal portion 20 and the second side terminal portion 21 to which power is input are disposed apart from each other, making it less likely that a short circuit will occur.

[0110] As described above, the changeover switch 1 can adopt a layout in which two of the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22 are arranged side by side in either the first direction or the second direction, and the remaining one is arranged in a position shifted in the other of the first direction or the second direction.In this case, the terminal relay portion 24 can be connected to the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22 that is shifted in the other of the first direction or the second direction.

[0111] In the above embodiment, the first side terminal portion 20 and the second side terminal portion 21 are arranged in the first direction, and the load side terminal portion 22 is arranged at a different position in the first direction relative to the first side terminal portion 20 and the second side terminal portion 21. However, for example, the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22 may be arranged in a row in the first direction or the second direction. Even in this case, if each of the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22 is oriented so that no other terminal portion is arranged in front of it, the effect of suppressing short circuit can be obtained. In addition, when the above configuration is adopted, the switching main body portion 2 may be configured to include the terminal relay portion 24 or may not be configured to include the terminal relay portion 24.

[0112] In the above embodiment, the first side terminal portion 20, the second side terminal portion 21, and the load side terminal portion 22 are configured to screw the first side distribution material M1, the second side distribution material M2, and the load side distribution material M3 together, but means other than screw fastening, such as a plug-in connection, may also be used.

[0113] Although not specifically mentioned in the above embodiment, the electric device 50 of the first circuit section 5 may be a terminal block or other device such as a circuit breaker. The electric device 60 of the second circuit section 6 and the electric device 70 of the load circuit section 7 may also be a circuit breaker or other device.

[0114] In the above embodiment, the first power supply system P1 is a commercial power supply system, and the second power supply system P2 is a power supply system including a distributed power supply. However, the first power supply system P1 may be a power supply system of a type other than a commercial power supply system, and the second power supply system P2 may be a power supply system of a type other than a power supply system including a distributed power supply. For example, the first power supply system P1 and the second power supply system P2 may have different power supply characteristics. That is, the first power supply system P1 may be a DC power supply and the second power supply system P2 may be an AC power supply, or both the first power supply system P1 and the second power supply system P2 may be DC. This allows power supplies with different characteristics to be connected and switched depending on the load to be connected, and various power supplies can be supplied to the load.

[0115] In the above embodiment, the second power supply system P2 is a system in which a solar cell is connected to the second power source P20 (a photovoltaic power generation system), but is not limited to this configuration. For example, the second power supply system P2 may be a system in which the second power source P20 is configured with a storage battery mounted on an electric vehicle.

[0116] In the above embodiment, the second power supply system P2 is a rechargeable power supply system in which the second power source P20 can be charged, but is not limited to this configuration. For example, the second power supply system P2 may be a system in which the second power source P20 has only a power generation function.

[0117] Although not specifically mentioned in the above embodiment, the changeover switch built-in panel 4 may be installed in a house, a factory, etc., and may be installed outside the building as well as inside the building.

[0118] In the above embodiment, only the power output from the first circuit section 5 flows through the relay circuit section 8. However, for example, the relay circuit section 8 may be configured so that power directed toward the first circuit section 5 flows.

[0119] In the above embodiment, the first side terminal portion 20 has three first side connection terminal portions 200, but may have, for example, one or two first side connection terminal portions 200, or may be configured to have four or more first side connection terminal portions 200. The same applies to the second side terminal portion 21 and the load side terminal portion 22.

[0120] Although not specifically mentioned in the above embodiment, the changeover switch 1 may be capable of switching to a neutral state in which the load circuit unit 7 is not electrically connected to either the first power supply system P1 or the second power supply system P2, in addition to the first power supply state and the second power supply state. This allows the load circuit unit 4 to be in a state electrically disconnected from the first power supply system P1 and the second power supply system P2, thereby further improving electrical safety when inspecting load equipment connected to the load circuit unit 4. [Explanation of symbols]

[0121] 1... Change-over switch, 2... change-over main body, 3... change-over control section, 20... first side terminal section, 21... second side terminal section, 22... load side terminal section, 23... exterior section, 24... terminal relay section, 30... control case

Claims

1. A changeover switch that switches a power source that supplies electricity to a load system including a load between a first power source system and a second power source system, a first terminal portion to which power from a first power supply system is input; a second side terminal portion to which power from a second power supply system is input; a load side terminal unit that outputs to a load system electric power input from a first power supply system to the first side terminal unit or electric power input from a second power supply system to the second side terminal unit, The first side terminal portion, the second side terminal portion, and the load side terminal portion are arranged in different positions in a front view, The first terminal portion and the second terminal portion are arranged side by side in a left-right direction perpendicular to a front-rear direction, the load side terminal portion is disposed at a position shifted lower or upper than the first side terminal portion and the second side terminal portion in a vertical direction perpendicular to the front-rear direction and the left-right direction, and is disposed so as to be aligned with the first side terminal portion or the second side terminal portion in the vertical direction. Change-over switch.

2. A changeover switch that switches a power source that supplies electricity to a load system including a load between a first power source system and a second power source system, a first terminal portion to which power from a first power supply system is input; a second side terminal portion to which power from a second power supply system is input; a load side terminal unit that outputs to a load system electric power input from a first power supply system to the first side terminal unit or electric power input from a second power supply system to the second side terminal unit, The first side terminal portion, the second side terminal portion, and the load side terminal portion are arranged in different positions in a front view, The first terminal portion and the second terminal portion are arranged side by side in a vertical direction perpendicular to a front-rear direction, the load side terminal portion is disposed at a position shifted to the right or left of the first side terminal portion and the second side terminal portion in a left-right direction perpendicular to the front-rear direction and the up-down direction, and is disposed so as to be aligned with the first side terminal portion or the second side terminal portion in the left-right direction. Change-over switch.

3. A changeover switch that switches a power source that supplies electricity to a load system including a load between a first power source system and a second power source system, a first terminal portion to which power from a first power supply system is input; a second side terminal portion to which power from a second power supply system is input; a load side terminal unit that outputs to a load system electric power input from a first power supply system to the first side terminal unit or electric power input from a second power supply system to the second side terminal unit, The first side terminal portion, the second side terminal portion, and the load side terminal portion are arranged in different positions in a front view, The second side terminal portion has a plurality of second side connection terminal portions, The load side terminal portion has a plurality of load side connection terminal portions, The second side connection terminal portions are arranged in a direction perpendicular to a front-rear direction, and the load side connection terminal portions are arranged in a direction perpendicular to a front-rear direction. Change-over switch.

4. a switching body capable of switching an electrical connection state between the first terminal portion and the second terminal portion and the load terminal portion, The load side terminal portion is provided at a tip of a terminal conductor extending from the switching body portion. A changeover switch according to any one of claims 1 to 3.

5. a switching body capable of switching an electrical connection state between the first terminal portion and the second terminal portion and the load terminal portion, The first terminal portion and the second terminal portion are disposed facing opposite each other in the left-right direction. The changeover switch according to claim 1.

6. A switching body portion capable of switching an electrical connection state between the first side terminal portion and the second side terminal portion and the load side terminal portion, The first terminal portion and the second terminal portion are disposed facing opposite directions to each other in the up-down direction. The changeover switch according to claim 2.

7. A switching body portion capable of switching an electrical connection state between the first side terminal portion and the second side terminal portion and the load side terminal portion, The first side terminal portion and the second side terminal portion are arranged facing in opposite directions to each other in a direction perpendicular to the front-rear direction and a direction in which the second side connection terminal portions are arranged. The changeover switch according to claim 3.

8. a switching body capable of switching an electrical connection state between the first terminal portion and the second terminal portion and the load terminal portion, a switching control unit that controls an operation of switching an electrical connection state between the first side terminal unit and the second side terminal unit of the switching main body and the load side terminal unit, The first terminal portion and the second terminal portion are provided on the switching body portion, The load side terminal portion is provided at a position adjacent to the switching control portion. A changeover switch according to any one of claims 1 to 7.

Images