JP7229974B2 - Uninterruptible replacement and electrical equipment with the uninterruptible replacement - Google Patents

Description

TECHNICAL FIELD The present invention relates to an uninterruptible replacement device and an electric device equipped with the uninterruptible replacement device.

Conventionally, devices have been developed and disclosed for performing work without interruption when replacing a watt hour meter. For example, the device disclosed in Patent Literature 1 below is a device for uninterruptible replacement of a watt-hour meter in which three wires on the power supply side and three wires on the load side are arranged side by side. A terminal block is attached to the watt-hour meter, and the terminal block short-circuits the wiring on the power supply side and the wiring on the load side.

In the watt-hour meter disclosed in Patent Document 1, the power-side wiring and the load-side wiring are arranged side by side. Some exist. The device of Patent Literature 1 cannot deal with watt-hour meters in which wires are arranged facing each other.

Japanese Patent No. 4518517

SUMMARY OF THE INVENTION It is an object of the present invention to provide an uninterruptible replacement device and an electrical device equipped with the uninterruptible replacement device that can cope with an electrical device in which two types of wiring are arranged facing each other.

An uninterruptible changeover device of the present invention is an uninterruptible changeover device for connecting or disconnecting an electric appliance to or from a first external wiring and a second external wiring. The uninterruptible replacement device includes a first terminal connected to the first external wiring, a first contact having the same potential as the first terminal and connected to a terminal of an electrical appliance, and the second external wiring. a second terminal connected to the first terminal and disposed at a position facing the first terminal; a second contact having the same potential as the second terminal and to which a terminal of an electrical appliance is connected; the first terminal and a third contact having the same potential as the first contact; a fourth contact having the same potential as the second terminal and the second contact and arranged at a position facing the third contact terminal; A short-circuiting member for switching between short-circuiting and insulation of the third contact and the fourth contact, and fixing the first terminal, the first contact, the second terminal, the second contact, the third contact and the fourth contact. A first housing and a second housing covering the first terminal, the first contact, the second terminal, the second contact, the third contact, the fourth contact, and the short circuit member are provided. An electric device of the present invention includes an electric appliance connected to the uninterruptible replacement device.

According to the present invention, the third contact and the fourth contact are short-circuited or insulated by the short-circuit member. The third contact and the fourth contact are insulated during normal use of the electrical device, and the third contact and the fourth contact are short-circuited when the electrical appliance is replaced. The third contactor and the fourth contactor are short-circuited, and the uninterruptible switching device can supply electricity even if the electric appliance is removed. Electric appliances can be replaced without interruption.

1 is a perspective view showing the appearance of an uninterruptible replacement device of the present invention; FIG. 1 is a perspective view of an appliance with an adapter attached; FIG. It is a perspective view of the uninterruptible replacement device with the second housing removed. It is a front view of the uninterruptible replacement device with the second housing removed. It is a figure which shows a 1st terminal, a 2nd terminal, a 1st contactor, a 2nd contactor, a 3rd contactor, a 4th contactor, and a short circuit member, (a) is a 3rd contactor and a 4th contactor. It is the figure short-circuited by the short circuit member, (b) is the figure in which the 3rd contactor and the 4th contactor were insulated. It is a front view which shows a lever. It is a perspective view in which a lever is attached to the first recess and the second recess. FIG. 8 is a perspective view of the lever being operated from the state of FIG. 7;

An uninterruptible replacement device of the present invention and an electric device provided with the uninterruptible replacement device will be described with reference to the drawings.

[Embodiment 1]
The uninterruptible replacement device 10 of the present invention shown in FIG. 1 is a device for connecting or disconnecting electric appliances to the first external wiring and the second external wiring. For example, the first external wiring is wiring connected to the power supply, and the second external wiring is wiring connected to the load. The electrical appliance 12 shown in FIG. 2 is not limited as long as it operates by being connected in series with the first external wiring and the second external wiring, and is, for example, a watt-hour meter or an ammeter.

As shown in FIGS. 1, 3 and 4, the uninterruptible replacement device 10 includes a first terminal 14, a second terminal 16, a first contact 18, a second contact 20, a third contact 22 and a fourth contact. A contactor 24 , a short circuit member 26 , a first housing 28 and a second housing 30 are provided.

A first terminal 14 , a second terminal 16 , a first contact 18 , a second contact 20 , a third contact 22 and a fourth contact 24 are attached to the first housing 28 . All or part of the first terminal 14 , the second terminal 16 , the first contact 18 , the second contact 20 , the third contact 22 , the fourth contact 24 and the short circuit member 26 are covered with the second housing 30 . will be The second housing 30 is provided with an opening or the like so that at least the first terminal 14, the second terminal 16, the first contactor 18, and the second contactor 20 can be seen from the outside. This is for externally connecting a terminal or the like to the first terminal 14 or the like. In the drawing, there are three each of the first terminal 14, the second terminal 16, the first contact 18, the second contact 20, the third contact 22, the fourth contact 24 and the short-circuiting member 26. It may be changed as appropriate according to the configuration of the device 12, the number of the first external wires, and the number of the second external wires.

The first terminal 14 is a terminal connected to the first external wiring. The second terminal 16 is a terminal connected to the second external wiring. The first terminal 14 and the second terminal 16 have the same shape. As shown in FIGS. 5(a) and 5(b), in the present application, L-shaped first metal fittings 32, second metal fittings 34 and third metal fittings 36 are superimposed, and the part where the three metal fittings are superimposed is It is the first terminal 14 or the second terminal 16 . The first terminal 14 and the second terminal 16 are provided with openings through which screws 38 are passed, and metal fittings 32 , 34 , 36 are attached to the first housing 28 by means of the screws 38 . Furthermore, the screws 38 attach the first external wiring to the first terminal 14 and the second external wiring to the second terminal 16 . In addition to attaching the metal fittings 32, 34, and 36 to the first housing 28 with the screws 38, they may be attached with rivets, or may be attached by being fitted into the first housing 28. You may

The first contactor 18 or the second contactor 20 is the opposite portion of the first terminal 14 or the second terminal 16 in the first metal fitting 32 and the second metal fitting 34 . The first contactor 18 and the second contactor 20 are arranged facing each other with a gap between the first metal fitting 32 and the second metal fitting 34 . The first metal fitting 32 and the second metal fitting 34 at the portions of the first contact 14 and the second contact 16 are provided with bent portions 40 and 42 which are brought close to each other. A terminal of the electrical appliance 12 is inserted between the first metal fitting 32 and the second metal fitting 34 . The terminals of the appliance 12 contact the bent portions 40, 42 and the first fitting 32 and the second fitting 34 are deflected away from each other. The elastic force of the first metal fitting 32 and the second metal fitting 34 makes it difficult for the terminal of the electric appliance 12 to come off from between the first metal fitting 32 and the second metal fitting 34 . A slit 44 is provided in the center of the first metal fitting 32 and the second metal fitting 34 . The first metal fitting 32 and the second metal fitting 34 are easily bent.

A fourth metal fitting 46 is attached to the third metal fitting 36 . An opening through which a screw 48 is passed is formed in a portion of the third metal fitting 36 opposite to the first terminal 14 or the second terminal 16. The screw 48 is passed through the opening, and the fourth metal fitting 46 is connected to the third metal fitting 34. screwed.

The fourth metal fitting 46 is a strip of metal and is bent so that both end portions thereof are opposed to each other (FIGS. 5(a) and 5(b)). The central portion of the fourth metal fitting 46 is planar and is attached to the third metal fitting 36 with screws 48 . Although the fourth metal fitting 46 is screwed to the third metal fitting 36 in the present application, the third metal fitting 36 may be omitted and the fourth metal fitting 46 may be fixed to the second metal fitting 34 by welding or the like.

Both end portions of the fourth metal fitting 46 are the third contactor 22 or the fourth contactor 24 . Both end portions of the fourth metal fitting 46 are provided with bent portions 50 that are adjacent to each other. The short-circuit member 26 is inserted into both end portions of the fourth metal fitting 46 .

The short-circuit member 26 is a long plate-shaped metal. The short-circuit member 26 is inserted between both end portions of the fourth metal fitting 46 . The short-circuit member 26 comes into contact with the bent portions 50 at both end portions of the fourth metal fitting 46, and both end portions of the fourth metal fitting 46 are bent away from each other. The elastic force of the fourth metal fitting 46 holds the short-circuiting member 26 between both end portions of the fourth metal fitting 46 .

One end of the short circuit member 26 is inserted into the third contactor 22 and the other end of the short circuit member 26 is inserted into the fourth contactor 24 . The short-circuiting member 26 is reciprocable in longitudinal linear motion. As shown in FIGS. 5(a) and 5(b), the other end of the short circuit member 26 is always inserted into the fourth contactor 24. As shown in FIG. The reciprocating motion of the short circuit member 26 causes it to be inserted into both contacts 22 , 24 or into the fourth contact 24 . When the short-circuit member 26 is inserted only into the fourth contact 24, the third contact 22 and the fourth contact 24 are insulated. When the shorting member 26 is inserted into both contacts 22 , 24 , the third contact 22 and fourth contact 24 are shorted, and the first terminal 14 and second terminal 16 are shorted. Note that the third terminal 22 may always sandwich the short-circuit member 26 instead of the fourth terminal 24 .

A plurality of short-circuit members 26 are arranged so that their planes are on the same plane (FIGS. 3 and 4). A plurality of short-circuiting members 26 are fixed to a plate-like fixing member 52 . The fixing member 52 has a long plate shape, and the length direction of the fixing member 52 is perpendicular to the length direction of the short-circuit member 26 . In the present application, the short-circuiting member 26 is sandwiched and fixed by two fixing members 52, but the short-circuiting member 26 may be fixed to one fixing member 52 by screwing or the like.

The fixed member 52 has a bar-shaped guided portion 54 facing the length direction of the short-circuit member 26 . The guided portion 54 is arranged between the short-circuit members 26 . A groove-shaped guide portion 56 into which the guided portion 54 is inserted is provided in the first housing 28 . The guide portions 56 are provided between the first terminals 14 and between the second terminals 16 in the first housing 28 . The guided portion 54 enters the guide portion 56 to determine the reciprocating direction of the short circuit member 26 . The length direction of the guided portion 54 faces the length direction of the short-circuit member 26, and the short-circuit member 26 can be reciprocated in the length direction. The tip of the guided portion 54 may be gradually tapered so that the guided portion 54 can easily enter the guide portion 56 .

A working member 58 is attached to the fixed member 52 to reciprocate the short-circuiting member 26 (FIGS. 3 and 4). The action member 58 has a long plate shape, and its length direction is perpendicular to the length direction of the short-circuit member 26 . Both ends of the working member 58 are vertically bent. First recesses 60 are formed in both end portions of the action member 58 .

A fulcrum member 62 is attached to the second housing 30 (FIG. 1). The fulcrum member 62 is a long plate whose length direction is the same as the length direction of the working member 58 . Both end portions of the fulcrum member 62 are bent in the vertical direction. Second recesses 64 are formed at both end portions of the fulcrum member 62 .

The present application comprises a lever 66 (Fig. 6). The lever 66 is a plate-shaped or rod-shaped body bent so that both ends thereof face each other. The central portion of the plate-like body or rod-like body is linear. A first convex portion 68 and a second convex portion 70 are provided on opposing portions of the lever 66 .

The first protrusion 68 of the lever 66 enters the first recess 60 and the second protrusion 70 enters the second recess 64 . With the protrusions 68 and 70 in the recesses 60 and 64, the central portion of the lever 66 is held and the lever 66 is rotated. The second convex portion 70 serves as a fulcrum and the first convex portion 68 serves as a point of action, so that the action member 58 can be moved (FIGS. 7 and 8). Since the action member 58 and the short-circuit member 26 are integrated, the movement of the action member 58 causes the short-circuit member 26 to move. By moving the short-circuiting member 26, it is possible to switch between the short-circuited state and the insulated state of the third contactor 22 and the fourth contactor 24 (FIGS. 5A and 5B).

A gap 72 into which both ends of the lever 66 and the first projection 68 are inserted is provided in the first housing 28 or the second housing 30 (FIG. 1). Both ends of the lever 66 are put into the gap 72 , and the first protrusion 68 is put into the first recess 60 .

As shown in FIG. 1, at both ends of the working member 58 are provided L-shaped stops 74 oriented perpendicular to the length of the working member 58 . A contact portion 76 of the action member 58 is provided on the side of the first housing 28 or the second housing 30 so that the stop portion 74 contacts the contact portion 76 . The working member 58 can be stopped at a predetermined position.

Since the lever 66 is a separate member from the short circuit member 26, the first housing 28 and the second housing 30, only the lever 66 is stored independently. A person who replaces the electric appliance 12 keeps the lever 66 and operates the lever 66 when replacing the electric appliance 12 or the like. It is possible to prevent the short-circuiting member 26 from being moved by erroneous operation and mischief.

The appliance 12 is connected to the first contact 18 and the second contact 20, and the appliance 12 is attached to the first housing 28 and the second housing 30 (Figs. 6, 7). Appliance 12 may be directly connected to first contact 18 and second contact 20 or may be connected via adapter 78 . For example, if the terminals of the appliance 12 face the same direction as the first terminal 14 and the second terminal 16, the terminals of the appliance 12 cannot be connected to the first contact 18 and the second contact 20. FIG. As shown in FIG. 2, the terminals of the appliance 12 are connected to an adapter 78 having a terminal 80 that is inserted into the first contactor 18 and the second contactor 20 . A terminal 80 of the adapter 78 is connected to the first contact 18 and the second contact 20 .

By connecting the electric appliance 12 to the uninterruptible replacement device 10 of the present application, the electric device 90 of the present application is obtained (FIGS. 7 and 8). For example, if appliance 12 is an electricity meter, electrical device 90 operates as an electricity meter.

Next, how to use the uninterruptible replacement device 10 and the electric device 90 of the present application will be described. (1) Place the uninterruptible replacement device 10 at the position where you want to place the appliance 12, connect the first external wiring to the first terminal 14 of the uninterruptible replacement device 10, and connect the second external wiring to the second terminal 16. to connect. At that time, the first external wiring and the second external wiring are left in a state in which no power is supplied.

(2) Confirm that the third contactor 22 and the fourth contactor 24 are not short-circuited by the short-circuiting member 26; If the third contactor 22 and the fourth contactor 24 are short-circuited, the lever 66 is used to move the short-circuiting member 26 to insulate the third contactor 22 and the fourth contactor 24 .

(3) Connect the terminals of the electrical appliance 12 to the first contactor 18 and the second contactor 20 . Appliance 12 may be connected to first contact 18 and second contact 20 via adapter 78 . By connecting the electric appliance 12 , an electric device 90 including the uninterruptible replacement device 10 and the electric appliance 12 is formed. With the third contact 22 and the fourth contact 24 insulated, the electrical appliance 12 is connected in series with the first contact 18 and the second contact 20 . After that, the first external wiring and the second external wiring are brought into a state (active state) in which electric power is applied. Power is supplied to the appliance 12 and the appliance 12 operates.

(4) When the electric appliance 12 is removed from the uninterruptible replacement system 10 due to periodic replacement or failure of the electric appliance 12, the first convex portion 68 of the lever 66 is put into the first concave portion 60, and the second convex portion 70 is moved to the second position. Place in recess 64 . By rotating the central portion of the lever 66 with the second protrusion 70 of the lever 66 as a fulcrum, the first protrusion 68 moves the acting member 58, and the short-circuiting member 26 integrated with the acting member 58 moves. . The short-circuit member 26 is inserted into both the third contact 22 and the fourth contact 24 by moving the short-circuit member 26 . The third contactor 22 and the fourth contactor 24 are short-circuited by the short-circuit member 26 . The third contact 22 and the fourth contact 24 are energized through the short circuit member 26 .

(5) Remove the appliance 12 from the uninterruptible replacement device 10 . The third contactor 22 and the fourth contactor 24 are short-circuited, and the first external wiring and the second external wiring are energized. The appliance 12 can be removed without stopping the load.

(6) Connect the terminals of the new appliance 12 to the first contactor 18 and the second contactor 20; As described above, the lever 66 is used to move the short-circuiting member 26 to insulate the third contactor 22 and the fourth contactor 24 . Power is supplied to the appliance 12 and the appliance 12 operates.

As described above, with the uninterruptible replacement device 10 of the present application, the electric appliance 12 can be replaced uninterruptedly with a simple operation. Unlike the prior art, the electrical appliance 12 in which the first external wiring and the second external wiring are arranged facing each other can be replaced without interruption. By making the lever 66 a separate part in the uninterruptible replacement device 10, it is possible to prevent the third contactor 22 and the fourth contactor 24 from short-circuiting and switching between insulation due to erroneous operation or mischief.

[Embodiment 2]
The shorting member 26 reciprocates between the third contact 22 and the fourth contact 24 in a linear motion to switch between shorting and insulation of the third contact 22 and the fourth contact 24, but other It may be a reciprocating motion. For example, the short-circuit member 26 may reciprocate with respect to the third contact 22 and the fourth contact 24 by rotating the short-circuit member 26 about its center. Further, the short-circuiting member 26 may reciprocate with respect to the third contactor 22 and the fourth contactor 24 by vertically moving the short-circuiting member 26 with respect to the third contactor 22 and the fourth contactor 24 . . The shorting member 26 may move in any manner with respect to the third contact 22 and the fourth contact 24 as long as the shorting and insulation of the third contact 22 and the fourth contact 24 are switched. As long as the short-circuiting member 26 reciprocates with respect to the third contact 22 and the fourth contact 24 and can switch between short-circuiting and insulation, there are no limitations on the configuration such as the shape thereof. is changed accordingly. Further, the position of the short-circuit member 26 is fixed, and both or one of the third contactor 22 and the fourth contactor 24 is moved to switch between contact and non-contact with respect to the short-circuit member 26, and the third contactor 22 and Short-circuiting and insulation of the fourth contactor 24 may be switched. Any of the short circuit member 26, the third contact 22 and the fourth contact 24 may move to switch between short circuit and insulation. The configuration for switching between short-circuiting and insulation of the third contactor 22 and the fourth contactor 24 may be changed as appropriate.

The third contactor 22 and the fourth contactor 24 are not limited to the fourth metal fitting 46 . For example, the third contactor 22 and the fourth contactor 24 are configured to be openable and closable with a plurality of fittings. The third contactor 22 and the fourth contactor 24 sandwich the short-circuiting member 26 or release the short-circuiting member 26 to switch between short-circuiting and insulation of the third contactor 22 and the fourth contactor 24 .

[Embodiment 3]
Instead of making the planes of the plurality of short-circuiting members 26 the same plane, the planes of the plurality of short-circuiting members 26 may be arranged in parallel. The angle of the plane may be different for each short-circuit member 26, the angle in the length direction of the short-circuit member 26 may be different, and the height of the short-circuit member 26 may be different. If the short circuit member 26 is housed in the first housing 28 and the second housing 30 and the short circuit and insulation of the third contactor 22 and the fourth contactor 24 are switched by the short circuit member 26, the arrangement of the short circuit member 26 is The method is not limited.

[Embodiment 4]
The shape of the guided portion 54 is not limited to a rod shape. The shape of the guided portion 54 is arbitrary as long as the guided portion 54 is guided by the guide portion 56 and the movement direction of the short-circuit member 26 is regulated. For example, the shape of the guided portion 54 may be flat or convex. The shape of the guide portion 56 is appropriately changed according to the shape of the guided portion 54 . Furthermore, the guided portion 54 and the guide portion 56 may be omitted, and the operator may move the short-circuit member 26 in a predetermined direction.

[Embodiment 5]
The structure of the lever 66 is not limited as long as the short-circuit member 26 can be moved. For example, the first concave portion 60 and the second concave portion 64 may be changed to convex portions, and a concave portion for receiving the convex portions may be formed in the lever 66 .

In addition, the present invention can be implemented with various improvements, modifications, and changes based on the knowledge of those skilled in the art without departing from the spirit of the present invention.

10: Uninterruptible Exchange Device 12: Electric Appliance 14: First Terminal 16: Second Terminal 18: First Contact 20: Second Contact 22: Third Contact 24: Fourth Contact 26: Short Circuit Member 28 : First housing 30: Second housing 32: First metal fitting 34: Second metal fitting 36: Third metal fitting 46: Fourth metal fitting 52: Fixed member 54: Guided portion 56: Guide portion 58: Acting member 60: First concave portion 62: fulcrum member 64: second concave portion 66: lever 68: first convex portion 70: second convex portion 78: adapter 90: electric device

Claims (10)

An uninterruptible replacement device for connecting or disconnecting electrical appliances to first external wiring and second external wiring,
a first terminal connected to the first external wiring;
a first contact that has the same potential as the first terminal and is connected to a terminal of an electrical appliance;
a second terminal connected to the second external wiring and arranged at a position facing the first terminal;
a second contact that has the same potential as the second terminal and is connected to a terminal of an electrical appliance;
a third contact having the same potential as the first terminal and the first contact;
a fourth contact having the same potential as the second terminal and the second contact and arranged at a position facing the third contact;
a short-circuiting member that switches between short-circuiting and insulation of the third contact and the fourth contact;
a first housing that fixes the first terminal, the first contact, the second terminal, the second contact, the third contact, and the fourth contact;
a second housing that covers the first terminal, the first contact, the second terminal, the second contact, the third contact, the fourth contact, and the short circuit member;
Uninterruptible replacement equipment with 2. The uninterruptible replacement system of claim 1, wherein said shorting member is reciprocable. The short circuit member is attached to the third contact or the fourth contact and is connected to the third contact, the fourth contact or both by reciprocating with respect to the third contact and the fourth contact. The uninterruptible switching device according to claim 2. 4. The uninterruptible switching device according to any one of claims 1 to 3, further comprising a lever for moving said short-circuit member. an acting member provided on the short-circuit member and having a first concave portion at an end thereof;
a fulcrum member provided in the first housing or the second housing and having a second concave portion at an end;
with
The lever is provided with a first convex portion that can be inserted into the first concave portion and a second convex portion that can be inserted into the second concave portion,
The short-circuit member can reciprocate by rotating the lever about the second protrusion with the first protrusion inserted into the first recess and the second protrusion inserted into the second recess. Item 4 uninterruptible replacement equipment. 6. The uninterruptible replacement device according to claim 2, further comprising a guided portion and a guide portion for regulating the movement direction of said short-circuit member. the guide portion is formed in the first housing and faces the reciprocating direction of the short-circuit member;
7. The uninterruptible replacement device according to claim 6, wherein said guided portion is provided on a short-circuit member and moves in said guide portion according to the reciprocating motion of said short-circuit member. An uninterruptible switching device according to any one of claims 1 to 7;
an electrical appliance connected to the first contact and the second contact;
electrical equipment with 9. The electrical device of claim 8, wherein the electrical appliance is a watt hour meter or an ammeter. 10. The electrical device of claim 8 or 9, further comprising an adapter for connecting the terminal of the electrical appliance and the first contactor and connecting the terminal of the electrical appliance and the second contactor.

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