JP4766884B2 - Energy meter adapter device - Google Patents

Description

  The present invention relates to a watt-hour meter that measures power consumption, and more particularly to a watt-hour adapter device that can be easily replaced without causing a power failure.

  As is well known, a watt-hour meter is installed in a conspicuous and narrow space in an ordinary house or business office for the purpose of measuring the amount of power used. This watt-hour meter is exchanged for a new one every certain period because it is necessary to accurately measure the amount of electric power used and conduct a fair fee transaction.

  Replacing the watt hour meter is carried out manually by a power company worker. Conventionally, a screw type terminal has been used for the watt hour meter to connect the wires. There is a problem that workability is poor and time is required, for example, it is necessary to perform in a narrow space.

  Also, when replacing the watt hour meter, the wires drawn from the outside (power supply side wires) and the load side wires connected to the indoor wiring in the house are temporarily cut off, causing the room to be in a power outage and the electrical equipment There was a risk that it would be inconvenienced to the electric power user.

Conventionally, there is one disclosed in Patent Document 1 as an energy meter adapter device having a configuration for avoiding such a power failure during work.
JP 2002-44819 A

However, since the watt-hour adapter device described in the above-mentioned patent document has a configuration in which a pressure connection fitting is press-fitted into an electric wire to form a bypass path between the power supply side electric wire and the load side electric wire, There was a risk of damage.
Moreover, even if this watt-hour adapter device is used, the connection configuration between the watt-hour meter and the electric wire is not different from the conventional one. The workability problem still remained unsolved.

  The present invention has been made in view of such circumstances, and when replacing or repairing a watt hour meter, the watt hour meter adapter can easily perform the work without forming a power failure state and does not cause damage to the electric wire. The purpose is to provide a device.

In order to achieve the above object, a watt-hour adapter device of the present invention includes a predetermined number of switch terminals connected to a power supply side wire or a load side wire, and a power supply side wire and a load side wire via these switch terminals. A terminal-side connecting component having a bypass path for connecting between the power terminal and the load-side terminal of the watt-hour meter, and a predetermined number of switching terminals that are detachable from the switch terminal. In addition, the switch terminal has a function of connecting and separating the bypass path, and the switching terminal has the following functions (a) to (c).
(A) With the engagement with the switch terminal, the switch terminal is opened to block the bypass path.
(B) With the engagement with the switch terminal, the power-side terminal portion of the watt-hour meter is connected to the power-side electric wire via the switch terminal and the load-side terminal portion of the watt-hour meter is connected to the load Connect to the side wire.
(C) With the disengagement from the switch terminal, the switch terminal is closed to connect the bypass path.

  With each configuration described above, the terminal-side connecting component and the switching terminal can be easily attached and detached. Furthermore, a bypass path is automatically formed in the terminal-side connecting component when the switching terminal is detached. As a result, even when the watt-hour meter is replaced or repaired, even if the instrument-side connection component connected to the watt-hour meter is removed, the energized state of the load-side electric wire is maintained via the bypass path. Therefore, an indoor power failure can be avoided, and replacement or repair work can be performed without causing trouble to the power user.

Here, the switching terminal can be provided integrally with the watt hour meter.
Moreover, it is good also as a structure which has an instrument side connection component separate from the watt-hour meter, and provided the switching terminal in this meter side connection component.

  By interposing the meter-side connection component between the watt-hour meter and the terminal-side connection component, the watt-hour meter can be connected to the terminal-side connection component without any modification or provision of special members. . For this reason, when replacing or repairing the watt-hour meter, a watt-hour meter generally used can be diverted and attached as it is.

  The instrument-side connection component has a predetermined number of watt-hour meter connection terminals that are electrically connected to the switching terminal and connected to the power-supply side terminal portion or the load-side terminal portion of the watt-hour meter via a connecting conductor. The meter connection terminal can be configured such that the connection position of the connecting conductor can be finely adjusted according to the arrangement interval of the power supply side terminal portion and the load side terminal portion of the watt hour meter.

  With the above configuration, the connection position of the connecting conductor can be finely adjusted even if the arrangement interval between the power supply side terminal portion and the load side terminal portion of the watt hour meter is different. As a result, the old and new watt-hour meters can be flexibly adjusted and connected even if the terminal arrangement intervals are different.

The switch terminal includes a first conductive contact connected to the power supply side electric wire or the load side electric wire and a second conductive contact connected to the bypass path. It is preferable that the conductive contacts come into contact with each other as the switching terminal is detached to form a conductive state. A configuration in which at least one of the first and second conductive contacts is elastically movable toward and away from the other, and a switching terminal enters an intermediate portion of each of the conductive contacts to separate the conductive contacts. It can be.
The switching terminal has a conductive portion that contacts the first conductive contact and an insulating portion that contacts the second conductive contact in accordance with the engagement with the switch terminal. It can be set as the structure connected to the power supply side terminal part or load side terminal part of a watt-hour meter.

  When the first and second conductive contacts are elastically contacted and separated, it is possible to engage with the switching terminal. For this reason, an instrument side connection component and a terminal side connection component can be engaged / disengaged, without damaging the coating | cover of a power supply side electric wire or a load side electric wire at all. In addition, since the replacement work of the removed watt-hour meter can be performed after moving to a wide space, the replacement work time is significantly shortened compared with the conventional work in a small space.

  The switching terminal and the switch terminal can be configured to be engaged and disengaged with the movement operation of the watt-hour meter in the vertical direction. With such a configuration, it becomes possible to remove the watt-hour meter without performing complicated operations during work, leading to improvement in work efficiency.

  The switching terminal and the switch terminal may be configured to be engaged and disengaged in accordance with the movement operation of the wattmeter in the front-rear direction. For example, even if a watt hour meter is installed in a narrow space due to the structure of a building or equipment outside the facility, it can be easily removed because it can be attached and detached in the front-rear direction.

  Moreover, this invention can be set as the structure provided with the electric power stop component which interrupts | blocks a bypass path by engaging with a switch terminal instead of an instrument side connection component.

  For example, when power supply is stopped for a long period of time due to moving or the like, the bypass circuit is interrupted by engaging the power stop component with the switch terminal, and the room can be brought into a power failure state.

  As described above, according to the present invention, when the watt-hour meter is replaced or repaired, the work can be easily performed without forming a power failure state, and there is no possibility of damaging the electric wire.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
FIG. 1 to FIG. 7 are diagrams for explaining an electricity meter adapter device according to the first embodiment of the present invention, and FIG. 1 is a perspective view showing the external appearance of the electricity meter and the electricity meter adapter device. It is.
As shown in FIG. 1, the watt-hour adapter device of the present embodiment includes a meter-side connection component 20 and a terminal-side connection component 40, and each of these components 20 and 40 includes the watt-hour meter 10 and the power source side. It is arranged between the electric wire 60 and the load side electric wire 61.

FIG. 2 is a diagram illustrating a general configuration example of the watt-hour meter, where (a) is a front view and (b) is a side view.
The watt-hour meter 10 shown in the figure includes a power amount measurement display unit 11 and a terminal unit 12 that measure and display the power amount. The electric energy measurement display unit 11 has a built-in measurement circuit for measuring electric energy, and a counter 13 is provided on the front. The measured power consumption is displayed on the counter 13.
A plurality of power supply side terminal portions 14 and a load side terminal portion 15 are arranged side by side on the terminal portion 12 of the watt-hour meter 10. The watt-hour meter 10 shown in FIG. 2 corresponds to a single-phase three-wire electric wire, and therefore, each terminal is arranged side by side.
For example, the arrangement of the power supply side terminal portion 14 is +100 V, ground, and −100 V from the left, and the arrangement of the load side terminal portion 15 is −100 V, ground, and +100 V from the left.
Each of the terminals 14 and 15 has a structure in which a connecting conductor 23 (see FIG. 1) is inserted from below and is clamped and fixed by a terminal screw 16.

FIG. 3 is a diagram illustrating a specific configuration example of the instrument side connection component, in which (a) is a front view, (b) is a side sectional view, and (c) is a bottom view.
The instrument-side connection component 20 of the present embodiment has a configuration in which a plurality of switching terminals 22 extend from one end surface (lower surface in the drawing) of the instrument-side connection component main body 21. The number of the switching terminals 22 corresponds to the sum of the terminals 14 and 15 provided in the watt-hour meter 10, and the instrument side connection component 20 shown in FIG. 3 includes six switching terminals 22.

  Each switching terminal 22 has a plug blade shape, and the inner core portion constitutes an insulating portion 24 made of an insulating material such as plastic. A conductive portion 25 made of a conductive material such as a metal plate is provided on one surface side of the insulating portion 24. The surface of the insulating portion 24 is configured such that one half is covered with the conductive portion 25 and the other half is exposed to the insulating portion 24.

  A concave portion 26 is provided from the other end surface (upper surface in the figure) of the meter side connecting component main body 21 toward the inside, and a watt hour meter connection terminal 27 is formed in the concave portion 26 (FIG. 3B). )reference). A plurality of recesses 26 in which watt-hour connection terminals 27 are formed are provided side by side corresponding to the switching terminals 22. In the present embodiment, the base end portion of the conductive portion 25 provided on the switching terminal 22 extends into the recess 26 to constitute the watt-hour connection terminal 27. The connecting conductor 23 inserted into the recess 26 is electrically connected to the watt-hour connecting terminal 27, and is clamped and fixed to the main body by a terminal screw 28 screwed from the front side of the meter-side connecting component main body 21. The electrical connection state is maintained.

  Note that a positioning fixing portion 29 made of a protruding piece for positioning and fastening with the terminal-side connection component 40 extends downward from the central portion of the lower edge of the instrument-side connection component main body 21. A positioning hole 30 is formed in the positioning fixing portion 29.

4A and 4B are partial enlarged views showing a connection state between the watt-hour meter and the meter-side connecting component, where FIG. 4A is a front view and FIG. 4B is a side sectional view. As shown in the figure, the watt-hour meter 10 and the meter-side connecting component 20 are electrically connected via a connecting conductor 23.
The connection work between the meter-side connecting component 20 and the connection conductor 23 and the connection work between the connection conductor 23 and the terminal portion 12 of the watt hour meter 10 are not limited to the small space on the site where the watt hour meter 10 is installed, Since it can be performed in a large work space, workability is greatly improved.

In addition, the watt-hour meter connection terminal 27 of the meter-side connecting component body 21 has a width in the peripheral space inside the recess 26 that is larger than the width dimension of the connection conductor 23, and the connection of the connection conductor 23 is performed in this space portion. The fixed position can be finely adjusted in the width direction.
Normally, the terminal arrangement of the watt-hour meter 10 is an arrangement interval based on the JIS standard, but there is also a watt-hour meter 10 that does not comply with this standard. Therefore, with the above configuration, even if the terminal arrangement interval of the watt-hour meter 10 is different, the connection position of the connecting conductor 23 can be finely adjusted in the width direction, and it is possible to flexibly cope with various watt-hour meters 10. It becomes possible.

FIG. 5 is a diagram illustrating a specific configuration example of the terminal-side connecting component, where (a) is a top view, (b) is a front view, (c) is a side cross-sectional view, and (d) is a schematic view of a bypass path. FIG.
The terminal-side connecting component 40 is formed with a concave groove 42 from one end surface (upper surface in the drawing) of the terminal-side connecting component body 41 toward the inside. A plurality of the concave grooves 42 are formed in the width direction, and a switch terminal 43 is built in each of the concave grooves 42. The number of grooves 42 and switch terminals 43 provided is the same as the number of switching terminals 22 provided in the instrument-side connecting component 20, and the arrangement interval also corresponds to the switching terminals 22.
Further, the terminal-side connecting component body 41 is provided with a plurality of wire connecting portions 44 in the width direction corresponding to the switch terminals 43. Each electric wire connection portion 44 is formed by a concave groove 42 that extends inward from the other end surface (lower surface in the drawing) of the terminal-side connection component main body 41.

  The switch terminal 43 includes first and second conductive contacts 45 and 46 made of metal pieces. As shown in FIG. 5C, the conductive contacts 45 and 46 are arranged to face each other in the concave groove 42. The first conductive contact 45 is disposed so that the proximal end of the first conductive contact 45 wraps around the wire connection portion 44. The power supply side electric wire 60 or the load side electric wire 61 is inserted into the electric wire connecting portion 44 from below, and is fixed in a state of being pressed against the first conductive contact 45 by the terminal screw 47.

  The second conductive contact 46 can be elastically contacted and separated from the first conductive contact 45 in the concave groove 42. That is, the second conductive contact 46 is always in contact with the first conductive contact 45, and when the switching terminal 22 is inserted into the concave groove 42, the first conductive contact 46 is made by the switching terminal 22. Separated from the contact 45. The switching terminal 22 is inserted between the conductive contacts.

  Each second conductive contact 46 is electrically connected to the bypass path 50 as schematically shown in FIG. The bypass path 50 is configured by internal electric wires 51, 52, 53 built in the terminal-side connecting component body 41. The bypass path 50 electrically connects the second conductive contact 46 in each switch terminal 43 between the switch terminal 43 to which the power supply side electric wire 60 is connected and the switch terminal 43 to which the load side electric wire 61 is connected. Connect.

In the configuration example shown in the figure, the switch terminal 43a at the left end shown in FIG. 5D is connected to the first conductive contact 45 with the + 100V power supply side electric wire 60, and the switch terminal 43f at the right end is connected to the first conductive terminal 43f. + 100V load-side electric wire 61 is connected to the conductive contact 45. The second conductive contacts 46 of these switch terminals 43 a and 43 f are electrically connected by an internal conductor 51.
Further, the second switch terminal 43b from the left shown in FIG. 5D is connected to the power supply side electric wire 60 grounded to the first conductive contact 45, and the second switch terminal 43e from the right is connected to the first switch terminal 43b. A load-side electric wire 61 to be grounded is connected to one conductive contact 45. The second conductive contacts 46 of the switch terminals 43 b and 43 e are electrically connected by the internal conductor 52.
Further, the third switch terminal 43c from the left shown in FIG. 5 (d) is connected to the first conductive contact 45 by the -100V power supply side electric wire 60, and the third switch terminal 43d from the right is the third switch terminal 43d. A load side electric wire 61 of −100 V is connected to one conductive contact 45. The second conductive contacts 46 of the switch terminals 43 c and 43 d are electrically connected by the internal conductor 53.

  A positioning engagement portion 48 is notched in the terminal side connection component body 41 at a position corresponding to the positioning fixing portion 29 provided in the instrument side connection component body 21. A positioning screw hole 49 is formed in the positioning engagement portion 48.

FIG. 6 is a diagram showing an engagement / disengagement state between the instrument side connection part and the terminal side connection part. FIG. 6A shows a state in which the instrument side connection part is detached from the terminal side connection part. c) shows a state in which the instrument-side connection component is engaged with the terminal-side connection component. FIG. 5B shows an intermediate process in which the instrument side connecting part is engaged with the terminal side connecting part.
FIG. 7 is a diagram illustrating an electrical connection state of the terminal side connection component and the instrument side connection component.

  As shown in FIG. 6A, in a state where the instrument-side connection component 20 is detached from the terminal-side connection component 40, the second conductive contact is made to the first conductive contact 45 built in the instrument-side connection component 20. The child 46 is in elastic contact. Therefore, the power supply side electric wire 60 and the load side electric wire 61 fixed to each electric wire connection portion 44 are in a conductive state via the first conductive connection portion 45, the second conductive connection portion 46, and the bypass path 50. It is formed (see FIG. 7A).

  Further, as shown in FIGS. 6B and 6C, when the switching terminal 22 of the instrument side connection component 20 is inserted into the concave groove 42 of the terminal side connection component 40 from above, the switching terminal 22 becomes the first. Between the conductive contact 45 and the second conductive contact 46 and separates the conductive contacts. The conductive portion 25 provided on the switching terminal 22 contacts the first conductive contact 45 and the insulating portion 24 contacts the second conductive contact 46. Thereby, as shown in FIG.7 (b), the bypass path | route 50 is interrupted | blocked from the power supply side electric wire 60 and the load side electric wire 61 which were fixed to each electric wire connection part 44. FIG. At the same time, the power supply side wire 60 and the load side wire 61 are connected to the power supply side terminal portion 14 of the watt hour meter 10 via the first conductive contact 45 and the conductive portion 25 of the switching terminal 22 or the connecting conductor 23. It is electrically connected to the load side terminal portion 15.

As described above, according to the watt-hour adapter device according to the present embodiment, it is easy to insert the switching terminal 22 of the meter-side connection component 20 into the concave groove 42 of the terminal-side connection component 40 even in a narrow space on the site. The watt hour meter 10 and the electric wire can be connected to each other. Further, if the switching terminal 22 of the instrument side connection component 20 is pulled out from the inside of the concave groove 42 of the terminal side connection component 40, the power source side electric wire 60 and the load are connected via the bypass path 50 as shown in FIG. Since the conduction | electrical_connection state between the side electric wires 61 can be maintained, the exchange operation of the watt-hour meter 10 can be performed, without making a house blackout.
Moreover, since these states can be formed only by inserting / removing the switching terminal 22, there is no possibility of damaging and damaging the coating of the wire as in the prior art of Patent Document 1.

  When the switching terminal 22 of the instrument side connecting component 20 is inserted into the switch terminal 43 of the terminal side connecting component 40 and each component is connected in an appropriate state, the positioning fixing portion 29 is engaged with the positioning engaging portion 48, The positioning hole 30 and the screw hole 49 are arranged to face each other. By screwing the positioning screw 31 into the positioning hole 30 and the screw hole 49, the connected state of each component is fixed, and unintentional dropping of the watt-hour meter 10 can be prevented.

[Second Embodiment]
FIG. 8 is a diagram showing a configuration of a watt-hour adapter device according to the second embodiment of the present invention, where (a) is a perspective view seen from the front direction, and (b) is a perspective view seen from the back side. is there.
In the watt-hour adapter device according to the present embodiment, the same or corresponding parts as those of the watt-hour adapter device according to the first embodiment described above are denoted by the same reference numerals, and the details of the portions are described. Description is omitted.

In the present embodiment, the switching terminal 22 of the meter-side connection component 20, the concave groove 42 of the terminal-side connection component 40, and the switch terminal 43 are in a direction to be engaged and disengaged with the movement operation of the watt-hour meter 10 in the front-rear direction. Is formed.
That is, as shown in FIGS. 8A and 8B, the instrument side connection component 20 has a switching terminal 22 extending in the front direction of the instrument side connection component main body 21, and the connection conductor 23 inserted from the upper surface and the instrument side connection. Connect vertically within the component body 21. The terminal side connection component 40 has a concave groove 42 formed in the back surface of the terminal side connection portion main body, and a switch terminal 43 provided therein.
Therefore, if the watt-hour adapter device of this embodiment is used, the watt-hour meter 10 can be moved in the front-rear direction to perform the replacement work. The configuration of the present embodiment is particularly effective when the installation space of the watt hour meter 10 is narrow and there is no room for moving the watt hour meter 10 in the height direction.

  In the present embodiment, the switching terminal 22 is provided in the front direction of the instrument-side connection component body 21 and the switch terminal 43 is provided on the back surface of the terminal-side connection component body 41. However, the arrangement may be reversed. That is, it is good also as a structure which arrange | positions the switching terminal 22 in the back direction of the instrument side connection component main body 21, and arranges the switch terminal 43 in the front of the terminal side connection component main body 41, and attaches or detaches in the front-back direction.

[Third Embodiment]
9 and 10 are diagrams showing the configuration of the watt-hour adapter device according to the third embodiment of the present invention. In the watt-hour meter device according to the present embodiment, the same or corresponding parts as those of the watt-hour meter adapter device according to the first and second embodiments described above are denoted by the same reference numerals. Detailed description is omitted.

The watt-hour adapter device shown in FIGS. 9 and 10 has a configuration in which the meter-side connecting component 20 is omitted and the watt-hour meter 10 is integrally provided with a switching terminal 22.
Specifically, the watt-hour adapter device of FIG. 9 is provided with a switching terminal 22 protruding downward from the bottom surface of the terminal portion 12 in the watt-hour meter 10. Further, the watt-hour adapter adapter device of FIG. 10 is provided with a switching terminal 22 protruding from the front of the terminal portion 12 in the watt-hour meter 10 toward the front.
Inside the terminal portion 12, the conductive portion 25 of the switching terminal 22 is directly connected to the power supply side terminal portion 14 and the load side terminal portion 15 of the watt hour meter 10. Therefore, when the switching terminal 22 is inserted into the switch terminal 43 of the terminal-side connecting component 40, the switching terminal 22 cuts the bypass path 50 in the terminal-side connecting component 40, and each of the wattmeters 10 is connected via the switching terminal 22. The electric wires 60 and 61 are electrically connected to the terminal portions 14 and 15.

  With this configuration, the number of parts can be reduced. Further, as in the first and second embodiments described above, in the field, the connection conductors 23 are used to connect the terminal portions 14 and 15 of the watt-hour meter 10 and the watt-hour meter connection terminal 27 of the meter-side connection component 20. This eliminates the need to connect the power meter, so that the watt-hour meter can be attached and replaced more easily, and the workability is further improved.

[Other Embodiments]
FIG. 11 and FIG. 12 are diagrams showing the configuration of the power stop component that interrupts the bypass path.
The power stop component 70 has a configuration in which a plurality of cut-off terminals 72 are protruded from the power stop component main body 71. The number of the interruption terminals 72 corresponds to the concave grooves 42 of the terminal-side connecting component 40, and the arrangement interval also corresponds to the concave grooves 42. These blocking terminals 72 are made of an insulating material such as plastic.

As shown in FIG. 12, when the interruption terminal 72 of the power stop component 70 is inserted into the concave groove 42 of the terminal side connection component 40, the first and second conductive contacts 45, 46 provided in the concave groove 42. The breaker terminal 72 is inserted between the conductive contacts to separate the conductive contacts and to insulate the conductive contacts.
Therefore, the power supply side electric wire 60 and the load side electric wire 61 connected to the electric wire connection part 44 of the terminal side connection component 40 are cut off from the bypass path 50 built in the terminal side connection component 40, and the watt hour meter 10 is also connected. Disconnected.

The power stop component 70 having the above-described configuration is inserted into the groove 42 of the terminal-side connection component 40 instead of the instrument-side connection component 20 when power supply is stopped to a house or the like that is absent for a long time. Since the power stop component 70 can also be formed in a power stop state by a simple operation by simply inserting the power stop component 70 into the concave groove 42 of the terminal side connection component 40, workability at the site is good.
In the above-described embodiment, the number of cutoff terminals 72 corresponding to the number of switch terminals 43 of the terminal-side connecting component 40 is provided. However, since it is only necessary to cut off the power supply, the corresponding cutoff terminals 72 are connected to the switch terminal 43 to which the ground wire is connected. The terminal 72 may not be provided.

  The present invention is not limited to the above-described embodiment, and it is needless to say that various application implementations or modifications can be made as necessary. For example, in the above-described embodiment, the configuration applied to the single-phase three-wire type 30A watt-hour meter is shown. However, the configuration is not limited to this, and the present invention is also applicable to a two-wire type, four-wire type, or three-phase watt-hour meter. It is possible. Moreover, it is applicable to watt-hour meters other than those for 30A.

It is the perspective view which showed the whole structure of the watt-hour adapter apparatus of 1st Embodiment. It is the figure which showed the structure of the watt-hour meter of 1st Embodiment, (a) is a front view, (b) is a side view. It is the figure which showed the structure of the instrument side connection component, (a) is a front view, (b) is side surface sectional drawing, FIG.3 (c) is a bottom view. It is the elements on larger scale which showed the connection of an electric energy meter and an instrument side connection component, (a) is a front view, (b) is side sectional drawing. It is a figure which shows the structure of a terminal side connection component, (a) is a top view, (b) is a front view, (c) is side sectional drawing, (d) is a bypass route figure. It is side surface sectional drawing which shows the engagement / disengagement state of an instrument side connection component and a terminal side connection component, (a) is a disengagement state, (c) is an engagement state, (b) has shown the intermediate state. . It is a figure which shows the electrical connection state of a terminal side connection component and an instrument side connection component, (a) is a state when the instrument side connection component and the terminal side connection component are detached, and (b) is an instrument side connection component and a terminal side connection. The state when the parts are engaged is shown. It is a figure which shows the structure of the watt-hour adapter apparatus which concerns on 2nd Embodiment, (a) is the perspective view seen from the front direction, (b) is the perspective view seen from the back direction. It is a perspective view which shows the watt-hour adapter apparatus which provided the switching terminal in the bottom face of the terminal part of an watt-hour meter. It is a perspective view which shows the watt-hour adapter apparatus which provided the switching terminal in the front of the terminal part of an watt-hour meter. It is a perspective view which shows embodiment using an electric power stop component. It is side surface sectional drawing which shows the state which inserted the power stop component in the terminal side connection component.

Explanation of symbols

10: Electric energy meter, 11: Electric energy measurement display unit, 12: Terminal unit, 13: Counter
14: power supply side terminal part, 15: load side terminal part, 16: terminal screw (watt hour meter),
20: Instrument side connection part, 21: Instrument side connection part main body, 22: Switching terminal, 23: Connection conductor, 24: Insulation part, 25: Conductive part, 26: Recessed part, 27: Wattmeter connection terminal, 28: Terminal Screw (instrument side connection part), 29: positioning fixing part, 30: positioning hole, 31: positioning screw,
40: terminal side connection component, 41: terminal side connection component main body, 42: concave groove, 43: switch terminal, 44: electric wire connection part, 45: first conductive contact, 46: second conductive contact 47: Terminal screw (terminal side connection part), 48: Positioning engagement part, 49: Screw hole,
50: Bypass path, 51, 52, 53: Internal conductor,
60: power supply side wire, 61: load side wire,
70: Power stop component, 71: Power stop component body, 72: Cut-off terminal,

Claims (7)

For a watt-hour meter with a screw-type terminal that connects the wire with a terminal screw, the power-side wire is connected to the power-side terminal of the watt-hour meter, and the load-side terminal of the watt-hour meter is connected. An electricity meter adapter device for conducting a load side electric wire,
A predetermined number of switch terminals connected to the power supply side electric wire or the load side electric wire, and a terminal side connection component provided with a bypass path for connecting between the power supply side electric wire and the load side electric wire via these switch terminals;
Including a predetermined number of switching terminals that are electrically connected to the power supply side terminal portion or the load side terminal portion of the watt-hour meter and that are detachable from the switch terminal, and
Further, the meter-side connecting component includes a predetermined number of connecting conductors clamped and fixed to the power-side terminal portion and the load-side terminal portion of the watt-hour meter by the terminal screws, and the watt-hour meter via the connecting conductors. And a predetermined number of watt-hour meter connection terminals formed integrally with the switching terminal and conducted to the switching terminal .
The switch terminal has a function of contacting and separating the bypass path,
The watt-hour adapter device, wherein the switching terminal has the following functions (a) to (c).
(B) With the engagement with the switch terminal, the switch terminal is opened to block the bypass path. (B) With the engagement with the switch terminal, the watt-hour meter is connected via the switch terminal. Connect the power-side terminal part to the power-side electric wire and connect the load-side terminal part of the watt-hour meter to the load-side electric wire. (C) Close the switch terminal with the disengagement from the switch terminal. Connect the bypass path The watt-hour meter connecting terminal is configured such that a connection position of the connecting conductor can be finely adjusted according to an arrangement interval of a power-side terminal portion and a load-side terminal portion of the watt-hour meter. Item 5. An electricity meter adapter device according to Item 1. The switch terminal includes a first conductive contact connected to the power supply side electric wire or a load side electric wire, and a second conductive contact connected to the bypass path. The watt-hour adapter device according to claim 1 or 2, wherein the conductive contacts are separated from each other and the conductive contacts come into contact with each other when the switching terminal is detached to form a conductive state. . At least one of the first and second conductive contacts can be elastically connected to and separated from the other, and the switching terminal enters an intermediate portion of the conductive contacts to separate the conductive contacts. The watt-hour meter adapter device according to claim 3, wherein the watt-hour meter adapter device is configured to allow the watt-hour meter. The switching terminal has a conductive portion that contacts the first conductive contact and an insulating portion that contacts the second conductive contact in accordance with the engagement with the switch terminal,
The watt-hour adapter device according to claim 4, wherein the conductive portion is connected to a power-side terminal portion or a load-side terminal portion of the watt-hour meter. 6. The watt-hour adapter device according to claim 1, wherein the switching terminal and the switch terminal are configured to be engaged and disengaged when the watt-hour meter is moved in the vertical direction. . 6. The watt-hour adapter device according to claim 1, wherein the switching terminal and the switch terminal are configured to be engaged and disengaged when the watt-hour meter is moved in the front-rear direction. .

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