JP2005351694A - Watthour meter adapter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a watthour meter adaptor capable of restraining a cost while allowing replacement work for a watthour meter without stopping power supply, not getting large spatially, and allowing easily switching between a short-circuiting condition and a non-short-circuiting condition. <P>SOLUTION: This adaptor comprises an adaptor main body B attached to the watthour meter A or electric wires K, K, etc., adjacent to the watthour meter A, and a connector C for attaching detachably one of them to the adaptor main body B, and a cover body D, the adaptor main body B is provided with connecting parts L, L, etc., connected to the respective electric wires K, K, etc., to form a by-pass circuit, and opening parts 5, 5, etc., of a recessed hole shape in upper parts of the connecting parts L, L., etc, and the foregoing connector C is provided with connection pieces 6, 6, etc., protruded outwards with connection ends 6a 6a, etc., connected to the connecting parts L, L, etc., through the opening parts 5, 5, etc., of a recessed hole shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a watt-hour meter that measures power consumption or a watt-hour adapter that is used by being attached to an input / output wire connected to the watt-hour meter.

  In general, the amount of power used in a home or business is measured by a watt-hour meter attached to each house or each business, and the electricity fee is paid to the power company based on this data. Therefore, this watt-hour meter must be able to always measure the amount of power accurately and without malfunction, and must be able to maintain accuracy. For this reason, the watt-hour meter is usually replaced with a new one in a cycle within 10 years.

  However, at the time of replacement or repair, the external electric wire connected to the watt-hour meter and the internal electric wire for indoor entry must be removed. Since the external electric wire is a live wire, each wire is not subject to danger. In other words, it takes a considerable amount of time, and the power outage has been forced for several tens of minutes or more, causing a great inconvenience to power users. In particular, even in general homes, not to mention offices, when using a personal computer or other network communication with the outside, or for various devices with time settings, replace this watt hour meter. The burden caused by time and power outages for repairs is by no means small.

  Therefore, the present inventor can greatly improve the work at the site by attaching a simple adapter to the watt hour meter and can easily replace the watt hour meter in a short time. An adapter for a watt-hour meter that can be used without forming a circuit and stopping power supply has been proposed.

As an example of this, in Japanese Patent No. 3079289 and Japanese Patent No. 3404554, there are three sets of connectors for short-circuiting and non-short-circuiting the same-polarity fittings housed in the opening of the adapter main body, and the connectors. The structure which attached to the adapter main body the connector provided with the moving means moved to a short circuit position and a non-short circuit position is shown.
Japanese Patent No. 3079289 Japanese Patent No. 3404544

  According to this prior invention, it is possible to easily switch between a short-circuited state and a non-short-circuited state simply by operating the moving means, but the structure of the connector provided with both the connector and the moving means is complicated and costly. Since both the connector and the moving means are provided, the problem that the installation space is bulky remains.

  Therefore, the present invention is a watt-hour adapter that can perform the replacement work of the watt-hour meter without stopping the power supply as in the prior art, but the cost is reduced and the adapter is not bulky without being bulky. The main object is to provide a watt-hour adapter that can be easily switched between a short-circuited state and a non-short-circuited state.

  The configuration of the present invention taken to achieve the above object will be described using the reference numerals used in the embodiments. The watt-hour adapter of the present invention is the watt-hour meter A or the electric wires K, K connected to the watt-hour meter A. ... an adapter main body B attached to the adapter main body B, and a connector C and a cover body D, one of which is detachably attached to the adapter main body B. The adapter main body B includes the electric wires K, K. Are connected to each other to form a bypass circuit, and upper portions of the connection portions L, L ... are recessed hole-shaped openings 5, 5 ... Are connected to the connecting portions L, L,... Through the recessed hole-shaped openings 5, 5,....

  The watt-hour adapter referred to in the present invention comprises a connection portion for the adapter main body to be connected to each electric wire to form a bypass circuit, and a recess-shaped opening at the top of the connection portion, and the connector is Because it has a connector with a connecting end that projects outwardly through the hollow hole-like opening, the adapter body can be replaced by simply attaching the connector to the adapter body when replacing the watt hour meter. The connection end of the connector attached to the connector and the connection portion of the adapter body are connected through the opening formed in the shape of a hollow hole, resulting in a short circuit state, and the watt hour meter can be replaced without stopping the power supply Can do. In addition, since it has a hollow hole-like opening at the top of the connection part, when the watt hour meter is not replaced, that is, in a normal state, the cover body is attached to the adapter body, After shielding the part from the outside, there is a hollow-shaped opening at the upper part of the connection part of the adapter body, the connection part and the cover body do not contact each other, and the non-short circuit state can be maintained stably. .

  In addition, since the connector only needs to have a connector at a minimum, the structure is simple, the space is not bulky, it is easy to handle, and the cost is reduced to improve productivity and consumption. Can be expanded.

  In carrying out the watt-hour adapter of the present invention, as one embodiment, an adapter main body B attached to the electric wires K, K... Connected to the watt-hour meter A, and either one of them is attached to or detached from the adapter main body B. It comprises a connector C and a cover body D that can be freely attached, and the adapter main body B is connected to the plurality of connection fittings 3, 3... Connected to the electric wires K, K. Are provided with recessed hole-shaped openings 5, 5... Above, and the connector C passes through the recessed hole-shaped openings 5, 5,. , 3... Can be implemented as a configuration including connectors 6, 6.

  Moreover, it consists of the adapter main body B attached to the watt-hour meter A, the connector C and the cover body D which can be detachably attached to the adapter main body B, and the adapter main body B includes the watt-hour meter. A plurality of pairs of terminal fittings 13, 13... Having input / output terminals 12, 12... Connected to A at the upper end and external wire connecting portions 13 b, 13 b. . And a hollow hole-shaped opening 5, 5 ... formed on the side surface of the case 14, and the connector C is connected to the terminal fitting through the hollow-hole-shaped opening 5, 5 ... The connecting ends 6a, 6a, etc. to be coupled to the connectors 13, 13,...

  The connection portion L according to the present invention uses a connection fitting 3 that connects the electric wire K and the energized state as shown in an embodiment to be described later, or one of the conductive terminal fittings 13 that connect the electric wire K and the watt hour meter. The connection end 6a of the connector 6 incorporated in the connector L and the connector C can be connected through the opening 5 in the shape of a hollow with a certain depth. Any configuration can be used as long as it has the above-described effects.

  Embodiments of the present invention will be described below together with illustrated examples. FIG. 1 to FIG. 8 are views showing a first embodiment of the present invention. FIG. 1 is a vertical side view of a watt-hour adapter to which a connector is attached, and FIG. 3 is a front view of the adapter main body in the watt-hour adapter, FIG. 4 is an exploded cross-sectional view along the line EE in FIG. 2, FIG. 5 is a perspective view of the connection fitting diagram, and FIG. FIG. 7 is an exploded cross-sectional view of the adapter, FIG. 7 is an exploded cross-sectional view of the cover body and the adapter, and FIG. 8 is a perspective view of the connector.

  The symbol A is a watt-hour meter, which is the same as that installed in a general household or office, and in the lower part, as shown in FIG. 3, three electric wires Ka, Ka, Ka on the input side, Three output-side electric wires Kb, Kb, Kb to the room are individually connected.

  Reference numeral B denotes an adapter main body according to the present invention, which is a separable receiving plate 1 and a front plate 2 that hold each electric wire K, K... Between the wall surface side and the surface side, and these receiving plates. 1 and a connecting means 4 for connecting the front plate 2 to each other. Further, on the surface plate 2, when the six connection fittings 3, 3 ... made of a good conductor are press-fitted and connected to the respective electric wires K, K ... in the conductive state, the respective electric wires K, K ... Opening portions 5, 5, etc., each having a hollow shape into which the upper surfaces of the connection fittings 3, 3. The recessed hole-shaped openings 5, 5... Also serve as passages for receiving connection ends 6a, 6a,.

  As shown in FIG. 4, the receiving plate 1 has dowels 1b, 1b ... each having a concave seat 1a, 1a ... for receiving the electric wires K, K ..., and receives the dowels 1b, 1b ... The U-shaped grooves 2a, 2a,... Of the cross section U are provided on the opposing surfaces of the surface plate 2, and each electric wire is held substantially between the concave seats 1a, 1a, and the grooves 2a, 2a,. The parallel wires G, G... Are formed, and the electric wires K, K.

  As shown in FIG. 5, the connection fitting 3 is formed by bending a metal plate having a good conductor, such as a brass plate, and having a hardness into a substantially U-shaped cross section, and having a U-shaped notch. The claw pieces 3a, 3a erected in the above are configured to be electrically connected to the internal conductors by being press-fitted onto the wires K, K ..., and the flat surface 3b is incorporated in the connector C. The connecting portions L are in contact with the connection ends 6a, 6a,.

  In this embodiment, the connecting means 4 for connecting the receiving plate 1 and the front plate 2 is, as shown in FIG. 4, the tip end portions of both end rising portions 4b, 4b... Of the U-shaped lock plate 4a. Are formed by elastically engaging the hooks 4c, 4c... With the engaging step 2b provided on the front plate 2. However, it goes without saying that the connection may be made by screwing with a general screw or bolt instead.

  Reference numeral C denotes a connector that is used in connection with the adapter main body B when required, such as when replacing the watt hour meter or repairing the trouble, and as seen in FIG. Comprising three connectors 6, 6, 6 for short-circuiting the pole fittings 3 and one connector block 7 having a substantially rectangular parallelepiped shape for holding the three connectors 6, 6, 6 therein, The connector block 7 is formed with mounting screw insertion holes 7 a for mounting the connector C to the adapter body B with mounting screws 9. As shown in FIGS. 6 and 8, the three connectors 6, 6, and 6 are formed in a U-shape in front view, which gradually increases in size from the center, the middle, and the outside in order to avoid contact with each other. The two ends are folded in the direction in which the two U-shaped rising edges face each other to form connection ends 6a, 6a,. The three connectors 6, 6, 6 are incorporated in the connector block 7 separately from each other, and the connection ends 6 a, 6 a... Are recessed hole-shaped openings 5, 5. The connector block 7 protrudes from the connecting surface 7b with the adapter main body B so that it can be connected to the connection fittings 3, 3.

  The symbol D is an insulating cover body that is used by being attached to the adapter main body B during normal times when the watt-hour meter is not replaced or repaired. As shown in FIG. 7, the flat plate 8a and the flat plate 8a Are formed so as to have a U-shaped cross-section from the four sides, and a fixing screw insertion hole 8c through which a fixing screw 10 for attaching the cover body D to the adapter body B is inserted. ing.

  In the adapter configured as described above, only the adapter main body B is first positioned below the watt hour meter A and the electric wires K, K. The lock plate 4a is fixed to the wall surface, the receiving plate 1 is arranged on the back side of the electric wires K, K ..., and the electric wires K, K ... are aligned with the concave seats 1a, 1a ... of the dowels 1b, 1b ... The groove 2a of the front plate 2 is fitted into the dowel 1b, and the receiving plate 1 and the front plate 2 are connected and fixed by the connecting means 4. Then, the fittings 3, 3... Are press-fitted from the recessed hole-like openings 5, 5. At this time, the connection fittings 3, 3... Can be carried out without stopping the power supply to the watt-hour meter A by individually press-fitting one by one to the electric wires K, K and making them energized. .

  Thus, normally, as shown in FIG. 2 and FIG. 7, the detachable cover body D with the insulating rubber adhered to the inner surface is covered from the front side of the adapter main body B to form a hollow hole shape. The openings 5, 5... Are closed, and the fixing screw 10 of the cover body D is screwed into the screw hole 2c through the fixing screw insertion hole 8c of the cover body D and is held in the closed position. When performing work such as watt-hour meter replacement, the fixing screw 10 is removed, the cover body D is removed, and the screw hole 2c is inserted into the screw hole 2c through the mounting screw insertion hole 7a of the connector C as seen in FIGS. The connector C is attached to the adapter body B by screwing the mounting screw 9 of the connector C. At the same time when the connector C is attached to the adapter body B, the connection ends 6a, 6a ... of the connectors 6, 6 ... are connected to the connection fittings 3, 3, ..., so that the same-polarity connection fittings 3 are short-circuited. Thereby, the electric power of the input side electric wires Ka, Ka... Is diverted to the indoor output side electric wires Kb, Kb. Thereby, replacement | exchange of the watt-hour meter A and the repair performed by removing this can be performed, without stopping electric power supply. After completion of the work, the connector C is removed from the adapter main body B, the cover body D is attached again, and the recessed hole-shaped openings 5, 5,.

  FIGS. 9 to 14 are views showing a second embodiment of the present invention. FIG. 9 is a longitudinal side view of a watt-hour adapter with a connector attached, and FIG. 10 is a front view of the adapter main body with the connector attached. 11 is an exploded cross-sectional view of the adapter main body and the connector along the line FF in FIG. 9, FIG. 12 is an exploded cross-sectional view of the adapter main body and the cover body, FIG. 13 is a perspective view of the adapter main body, and FIG. The perspective view of a connector is shown.

  Symbol A is a watt-hour meter, which is the same as that installed in ordinary households and business establishments, and is provided with six cylindrical hole input / output terminal connection portions 11, 11,. . As shown in FIG. 10, the input terminals 12a, 12a, 12a and the three output side electric wires Kb, which are connected to the input / output terminal connection portions 11, 11,. Output terminals 12b, 12b and 12b to which Kb and Kb are connected are connected.

  Reference numeral B denotes an adapter according to the present invention, which includes terminal fittings 13, 13... For connecting the watt hour meter A and the external electric wires K, K..., And a case 14 for housing these terminal fittings 13, 13.

  The terminal fittings 13, 13 ... are prismatic fitting main bodies 13a, 13a ..., the columnar input / output terminals 12 projecting upward from the upper surfaces of the prismatic fitting main bodies 13a, 13a ..., and the prismatic fittings. Are formed of cylindrical hole-shaped external wire connecting portions 13b, 13b,... Formed on the lower surfaces of the main bodies 13a, 13a,. The input / output terminals 12 of the terminal fittings 13, 13... Are inserted and fixed to the input / output terminal connection portions 11, 11. Are inserted and fixed to the external wire connecting portions 13b, 13b ... of the terminal fittings 13, 13, ..., so that the terminal fittings 11, 11 ... are connected to the wires K, K ....

  In the front surface of the case 14, recessed hole-shaped openings 5, 5... Are provided to reach the terminal fittings 13, 13..., And the prismatic fitting main bodies 13 a, 13 a. A part of the side surface serves as a connection portion L for connecting the connection end 6 a of the connector 6. The hollow hole-shaped openings 5, 5... Also serve as passages for receiving connection ends 6a, 6a.

  Reference numeral C denotes a connector that is used by being attached to the adapter main body B when required, such as when replacing the watt hour meter or repairing the failure, and has the same polarity through the recessed hole-shaped openings 5, 5. Are provided with three connectors 6, 6, 6 for short-circuiting the terminal fittings 13 and one connector block 7 for holding the three connectors 6, 6, 6 therein. As shown in FIG. 9, the three connectors 6, 6, and 6 are formed in a U-shape in a plan view that gradually increases in size from the center, the middle, and the outside in order to avoid mutual contact. The two ends are folded back to the U-shaped base side to form connection ends 6a, 6a,. The three connectors 6, 6, 6 are assembled in the connector block 7 so as to be separated from each other and covered with a lid 7 c, and the connection ends 6 a, 6 a. It is made to protrude from the connection surface 7b with the adapter main body B of the connector block 7 so that it can connect with the terminal metal fittings 13 and 13 ... through opening part 5,5 ....

  Reference sign D is an insulating cover body used by being connected to the adapter main body B in a normal time when the watt-hour meter is not replaced or repaired. As shown in FIG. Similarly, a rising side 8b raised from the four sides of the flat plate 8a so as to have a U-shape in cross section and a screw insertion hole 8c through which the fixing screw 10 is inserted are formed.

  The watt-hour adapter configured as described above is fixed by inserting the external electric wires K, K... Into the external electric wire connection portions 13 b, 13 b. On the other hand, the input / output terminals 12, 12 ... of the terminal fittings 13, 13 ... are inserted and fixed to the input / output terminal connection portions 10, 10 ... of the watt-hour meter A, and the watt-hour meter A and the adapter B are connected. In this state, the case 14 of the adapter B is attached to the wall surface.

  Thus, normally, as shown in FIG. 9 and FIG. 11, the detachable cover body D with the insulating rubber adhered to the inner surface is put on the front side of the adapter main body B to form a hollow hole shape. The openings 5, 5... Are closed, and the fixing screw 10 of the cover body D is screwed into the screw hole 14a through the fixing screw insertion hole 8c of the cover body D and is held in the closed position. When performing work such as watt-hour meter replacement, the fixing screw 10 is removed, the cover body D is removed, and the connector C is inserted into the screw hole 14a through the mounting screw insertion hole 7a as shown in FIG. The connector C is attached to the adapter body B by screwing the attachment screw 9. At the same time when the connector C is attached to the adapter main body B, the connection ends 6a, 6a,... Of the connectors 6, 6, ... are connected to the terminal fittings 13, 13, and so on. Thereby, the electric power of the input side electric wires Ka, Ka... Is diverted to the indoor output side electric wires Kb, Kb. In this state, the watt-hour meter A can be replaced or repaired by removing it without stopping the power supply. After the work is finished, the connector C is removed from the adapter main body B, the cover body D is attached again, and the recessed hole-shaped openings 5, 5,.

  The embodiment considered to be a representative example of the present invention has been described above. However, the watt-hour meter adapter of the present invention is not limited to the above-described embodiment, and includes the above-described configuration requirements according to the present invention. In addition, the present invention can be carried out with appropriate modifications within the scope of achieving the object of the present invention and having the effects of the present invention.

  The watt-hour adapter of the present invention is simpler in structure than the conventional product, does not take an installation volume, is low in cost, and is easy to handle.

The longitudinal section side view of the electricity meter adapter which attached the connector of the 1st Example. The vertical side view of the electricity meter adapter which attached the cover body. The front view of the adapter main body in the same electricity meter adapter. The exploded cross-sectional view along the EE line in FIG. The perspective view of the same connection metal fitting figure. The cross-sectional view which decomposed | disassembled the connector and adapter. The cross-sectional view which decomposed | disassembled the cover body and the adapter. Perspective view of connector The vertical side view of the electricity meter adapter which attached the connector of the 2nd Example. The front view of the state which attached the connector to the adapter main body. The disassembled cross-sectional view of the adapter main body and connector along the FF line in FIG. The decomposition | disassembly cross-sectional view of the same adapter main body and a cover body. The perspective view of the adapter main body. The perspective view of the connector.

Explanation of symbols

Reference Signs List 3 Connection Bracket 5 Recessed Hole Opening 6 Connector 6a Connection End 12 Input / Output Terminal 13 Terminal Bracket 14 Case A Power Meter B Adapter Body C Connector D Cover Body K Electric Wire L Connection

Claims (3)

Adapter body (B) attached to the watt-hour meter (A) or the electric wires (K), (K) ... connected to the watt-hour meter (A), and either one of the adapter body (B) It consists of a connector (C) and a cover body (D) that are detachably attached, and the adapter body (B) is a connection for forming a bypass circuit by connecting to each of the electric wires (K), (K). (L), (L) ..., and the connection part (L), (L) ... provided with a recessed hole-like opening (5), (5) ..., the connector (C), A connector (6) in which connection ends (6a), (6a), which are connected to the connection portions (L), (L), through the recessed hole-shaped openings (5), (5), are projected outward ), (6) ... watt-hour meter adapter. An adapter body (B) attached to the electric wires (K), (K) ... connected to the watt hour meter (A), and a connector (one of which is detachably attached to the adapter body (B)) C) and a cover body (D), and the adapter body (B) includes a plurality of connection fittings (3), (3), which are connected to the electric wires (K), (K), Each of the electric wires (K), (K) is provided with a recessed hole-like opening (5), (5) on the upper part of the connecting metal fittings (3), (3), which are connected to the electric wires (K), The connector (C) has connection ends (6a), (6a), which are connected to the connection fittings (3), (3), through the recessed hole-shaped openings (5), (5), outward. An electricity meter adapter provided with protruding connectors (6), (6). The adapter main body (B) attached to the watt-hour meter (A), and the connector main body (B) comprising either a connector (C) or a cover body (D) that can be detachably attached to the adapter main body (B), The adapter body (B) has input / output terminals (12), (12) ... connected to the watt hour meter (A) at the upper end, and external electric wire connection portions (13b), (13b) ... at the lower end. A plurality of pairs of terminal fittings (13), (13), a case (14) for accommodating the terminal fittings (13), (13), and a hollow-shaped opening formed on the side surface of the case (14) (5), and the connector (C) includes the terminal fittings (13), (13), and the like through the recessed hole-shaped openings (5), (5), and so on. A watt-hour meter adapter provided with connectors (6), (6), and the like, with connection ends (6a), (6a).

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