JP4766904B2 - Electronic energy meter - Google Patents

Description

The present invention relates to an electronic watt-hour meter having a socket structure, and more particularly to a structure of structural and retrieval member for removing the units.

  Conventionally, an electronic watt hour meter is known as a watt hour meter for measuring the amount of power used by a consumer. The electronic watt-hour meter has a terminal portion having a voltage terminal to which voltage is input and a current terminal to which current is input, a power calculation unit for calculating power based on the input voltage and current, and a display for displaying the power amount And a central control unit for controlling each unit. In a conventional electronic watt-hour meter, a board on which electronic components constituting a power calculation unit, a central control unit, and the like are mounted and a display unit are fixed to the housing by screws or the like, and the terminal unit and the board, The display units are electrically connected by a cable or the like.

  Further, as a watt-hour meter having a socket structure, a split type current transformer provided with a split type current transformer for detecting a current flowing in the power supply line and a power conversion means for inputting a current signal from the split current transformer. A small power converter with a flow device is disclosed (Patent Document 1). The power conversion means of this device comprises a power amount converter body and a socket part.

  The power amount converter main body includes a power measuring unit that measures the power consumption amount based on the input current signal and voltage signal, and a data transmission unit for transmitting the measured power consumption amount to the outside.

The socket unit is connected to a current input line for inputting a current signal, a voltage input line for inputting a voltage signal, and a communication line for transmitting the measured power consumption to the outside. The power converter main body can be inserted into and removed from the socket, and the main body is fixed and electrically connected to the socket by inserting the electrode of the main body into the socket.
JP 2000-241466 A

  However, the conventional socket-type electronic watt-hour meter as described in Patent Document 1 described above is manually attached to and detached from the socket part, and thus may come into contact with the charging part during the attachment and detachment work. Also, when removing the main unit from the socket, force is applied to pull out the main unit in the direction of removal, so there is a risk that the main unit will fall due to a reaction during removal, which may cause injury to the operator and cause the main unit to malfunction. It becomes.

The subject of this invention is an electronic watt-hour meter which has a socket structure, Comprising: It is providing the electronic watt -hour meter which can improve safety | security and workability | operativity.

The present invention employs the following means in order to solve the above problems. The invention of claim 1 includes an electric energy measuring unit for measuring electric energy supplied to a load by a distribution line, a switch unit for opening and closing between the electric energy measuring unit and the load, and the electric energy measuring unit. And a case having a socket structure for electrically connecting each unit and the distribution line, and pulling each unit attached to the case from the case. Bei example a pulling member gripper tip for pulling grips the pulling member which is bent into a substantially J-shape, the retrieval member gripper, a substantially L-shaped integrally formed on the case side of the units The side surface portion includes a side surface portion and a bottom surface portion, and the side surface portion faces the mounting surface of the case when the respective units are mounted to the case, and is provided at a position separated from the mounting surface by a predetermined length. The bottom surface portion is substantially perpendicular to the side surface portion and extends in the direction of the mounting surface of the case, and is attached to the pulling member at a portion sandwiched between the side surface portion, the bottom surface portion, and the mounting surface of the case. Each unit is pulled out from the case by engaging the formed engaging portion and rotating the pulling member .

The invention of claim 2 is an electric energy measuring unit for measuring the electric energy supplied to the load by the distribution line, a communication unit for transmitting the electric energy measured by the electric energy measuring unit to the outside, and the electric power A switch unit that opens and closes between a quantity measuring unit and the load, and each unit of the power amount measuring unit, the communication unit, and the switch unit are attached, and each unit and the distribution line are electrically connected. A case having a socket structure for connection; and a pulling member gripping part for gripping a pulling member having a tip bent in a substantially J shape for pulling out each unit attached to the case from the case. The pull-out member gripping portion has a substantially L-shaped side surface portion and a bottom surface portion that are integrally formed on the side surface of the casing of each unit, and the side surface portion includes a front portion and a front portion. When mounted on the case, the mounting surface faces the mounting surface of the case and is provided at a predetermined distance from the mounting surface, and the bottom surface portion is substantially perpendicular to the side surface portion and the mounting surface of the case The engaging portion formed on the pulling member is engaged with a portion that extends in the direction and is sandwiched between the side surface portion, the bottom surface portion, and the mounting surface of the case, and the pulling member is rotated to rotate the pulling members. The unit is pulled out from the case .

According to the first aspect of the present invention, each unit of the electric energy measuring unit and the switch unit includes the pulling member gripping part for gripping the pulling member, and pulling out each unit by using the pulling member. Because it is removed from the unit, there is no fear of contacting the charging part of the case when attaching or detaching each unit, and no reaction is applied when removing the unit. For this reason, each unit can be removed safely and reliably. Moreover, since the drawing member gripping part is integrally formed on the side surface of the housing of each unit and has a side surface part and a bottom surface part, the pulling member can be securely gripped.

According to invention of Claim 2, each unit of an electric energy measuring unit, a communication unit, and a switch unit is provided with the extraction member holding part by which an extraction member is held, and each is extracted by using an extraction member, Since the unit is removed from the case, there is no risk of contact with the charging part of the case during attachment / detachment work, and no reaction is applied during removal. For this reason, each unit can be removed safely and reliably. Moreover, since the drawing member gripping part is integrally formed on the side surface of the housing of each unit and has a side surface part and a bottom surface part, the pulling member can be securely gripped.

  Hereinafter, an electronic watt hour meter and an extraction member for an electronic watt hour meter according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an external front view of an electronic watt-hour meter according to the present invention. As shown in FIG. 1, the electronic watt-hour meter according to the present invention includes an electric energy measuring unit 1a, a switch unit 1b, a communication unit 1c, and a unit case 6. Each unit 1 a to 1 c is attached to the unit case 6 so as to be adjacent to each other at a position facing each other by a socket structure, and is electrically connected, and is fixed to the unit case 6 by a unit fixing screw 3. Each unit 1 is removed from the unit case 6 using a drawing tool 13 (the drawing member of the present invention) described later in a state where the unit fixing screws 3 are completely loosened.

  2 is an external perspective view of the electric energy measuring unit 1a, FIG. 3 is an enlarged view of the pulling tool gripping portion 2 of each unit 1, FIG. 4 is an external front view of the unit case 6, and FIG. 3 is an external perspective view of a drawing tool 13 for removing the unit 1 from the unit case 6. FIG.

  As shown in FIG. 2, each unit 1 is provided with a pulling tool gripping portion 2 that grips the pulling tool 13 on the right side surface and the left side surface of a rectangular parallelepiped housing. A unit fixing hole 4 into which the fixing screw 3 is inserted is provided. Further, the electric energy measuring unit 1 a includes an electrode 7 for electrically connecting to the unit case 6.

  As shown in FIG. 1, the pulling tool gripping portion 2 includes a pulling tool gripping portion 2 formed on one right side surface of two adjacent units and the other right side when each unit 1 is attached to the unit case 6. The distance between the drawing tool gripping part 2 formed on the surface and the distance between the drawing tool gripping part 2 formed on the left side of one of the two adjacent units and the pulling tool gripping part 2 formed on the other left side. Are spaced apart so that the extraction tool 13 can be inserted.

  The power amount measuring unit 1a measures the amount of power supplied to the load by the distribution line, and displays the measured value to be displayed and the infrared pulse having a frequency corresponding to the measured value to the communication unit 1c. A pulse output window 8 is provided.

  The communication unit 1c has an infrared pulse input window (not shown) for inputting an infrared pulse, receives measurement data based on the measurement value measured by the electric energy measurement unit 1a by infrared communication, and performs wired or wireless communication. The amount of power used by each consumer is transmitted to a central device that performs centralized management. Noise can be reduced by using infrared communication as the communication between the electric energy measuring unit 1a and the communication unit 1c.

  The switch unit 1b is a unit that opens and closes between the electric energy measuring unit 1a and the load. The switch unit 1b is closed when the electric energy is measured and opened when the electric energy measuring unit 1a and the load are disconnected. Moreover, in the consumer who does not require the switch unit 1b, the connection unit (not shown) which always makes a closed state between the electric energy measurement unit 1a and a load is attached instead of the switch unit 1b.

  As shown in FIG. 2, the extraction tool gripping portion 2 is provided on the right side surface and the left side surface of the casing of each unit 1 and is integrally formed with the casing (for example, made of PBT resin). As illustrated in FIG. 3, the drawing tool grip 2 is formed in a substantially L shape and includes a side surface 2 a and a bottom surface 2 b.

  The side surface portion 2a faces the mounting surface of the unit case 6 when the unit 1 is mounted on the unit case 6, and is provided at a position away from the mounting surface by a predetermined length. The bottom surface portion 2b is integrally formed with the lower end portion of the side surface portion 2a and extends in the mounting surface direction. When the unit 1 is attached to the unit case 6, the extraction tool 13 is gripped by the side surface portion 2 a, the bottom surface portion 2 b, and the attachment surface of the unit case 6. Further, as shown in FIG. 3, the extraction tool gripping part 2 may be integrally formed with a unit fixing hole.

  As shown in FIG. 4, the unit case 6 is a case having a socket structure for connecting each unit 1 and a power distribution line by attaching the electric energy measuring unit 1a, the switch unit 1b, and the communication unit 1c. It is. The unit case 6 includes a terminal portion 5 to which a distribution line is connected, an electrode insertion portion 12a into which the electrode 7 of the electric energy measuring unit 1a is inserted, an electrode insertion portion 12b into which the electrode 7 of the switch unit 1b is inserted, and a communication unit. 1c includes an electrode insertion portion 12c into which the electrode 7 is inserted, an insulating plate 10 for insulating the surface of the electrode insertion portion 12, and an insulating plate fixing screw 11 for fixing the insulating plate 10 to the unit case 6. Yes.

  As shown in FIG. 5, the extraction tool 13 is applied with an external force, and has a grip portion 17 that serves as a power point, an engagement portion 14, a fulcrum portion 15, and an arm portion 16, and is made of, for example, stainless steel. The grip portion 17 is a portion to which an operator can apply an operation force by gripping the hand, and the arm portion 16 extends from both ends of the grip portion 17 in a substantially perpendicular direction to the grip portion 17. A fulcrum 15 serving as a fulcrum bent in a substantially perpendicular direction with respect to the arm 16 and the grip 17 is formed at the tip of the arm 16, and the tip of the fulcrum 15 is bent in the direction of the grip 17. An engaging portion 14 that engages with the extraction tool gripping portion 2 is formed. The engaging part 14 and the fulcrum part 15 constitute a bent part of the present invention.

In this way, the extraction tool 13 is formed with a substantially J-shaped tip, the engaging portion 14 is an action point for the extraction tool gripping portion 2, the fulcrum portion 15 is a fulcrum on the unit case 6, and the gripping portion 17 is It is a tool for pulling out each unit 1 from the unit case 6 by utilizing the principle of leverage as a power point.
Next, the operation of removing the unit 1 attached to the unit case 6 will be described in detail.

  6 is a cross-sectional view taken along the line AA in FIG. 1 as viewed from the direction of the arrow, and shows a state where the switch unit 1b attached to the unit case 6 is removed. When the switch unit 1b is removed from the unit case 6, as shown in FIG. 6, first, the unit fixing screw 3 is completely loosened.

  Next, the extraction tool 13 includes an extraction tool grip 2 formed on the right side and the left side of the electric energy measuring unit 1a and an extraction tool grip 2 formed on the right side and the left side of the switch unit 1b. Inserted between them, the engaging portion 14 of the extraction tool 13 is engaged with the portion sandwiched between the side surface portion 2a and the bottom surface portion 2b of the extraction tool gripping portion 2 of the switch unit 1b and the mounting surface of the unit case 6. (FIG. 6A).

  Next, with the engagement portion 14 engaged with the extraction tool gripping portion 2, the extraction tool 13 is pressed upward, and the arm 16 is rotated clockwise with the fulcrum 15 as a fulcrum until the arm 16 becomes horizontal. (FIG. 6B). Furthermore, the switch unit 1b can be removed from the unit case 6 by rotating the extraction tool 13 clockwise (FIG. 6C). The same operation is performed when removing the electric energy measuring unit 1a and the communication unit 1c.

  Thus, the electric energy measuring unit 1a, the switch unit 1b, and the communication unit 1c of the electronic watt-hour meter of the present invention are provided with the extraction tool holding part 2 for holding the extraction tool 13, and the engagement part 14 is extracted. Since the unit 1 is detached from the unit case 6 by rotating with the fulcrum 15 as a fulcrum while being engaged with the tool gripping part 2, the unit 1 comes into contact with the charging part of the unit case 6 when each unit 1 is attached or detached. There is no fear and there will be no reaction when removed. For this reason, the electronic watt-hour meter of this invention can improve safety | security and workability | operativity.

  Further, since the extraction tool 13 is inserted between one extraction tool gripping part 2 and the other extraction tool gripping part 2 of two adjacent units, as shown in FIG. When the units are attached so as to be adjacent to each other, for example, only the electric energy measuring unit 1a attached between the communication unit 1c and the switch unit 1b can be removed.

  Thus, since the electronic watt-hour meter of the present invention can remove only the unit to be removed, the workability is further improved.

  The electronic watt-hour meter of the present invention can be used by various customers as a watt-hour meter for measuring the amount of power. The extraction member of the present invention can be used as a tool for extracting each unit constituting the electronic watt-hour meter of the present invention from the unit case.

1 is an external front view of an electronic watt-hour meter according to the present invention. It is an external appearance perspective view of the electric energy measuring unit of the electronic watt-hour meter which concerns on this invention. It is an enlarged view of the extraction tool holding part of each unit of the electronic watt-hour meter concerning the present invention. It is an external appearance front view of the unit case of the electronic watt-hour meter which concerns on this invention. It is a drawing tool for removing each unit of the electronic watt-hour meter concerning the present invention. It is an external appearance side view which shows a mode that each unit of the electronic watt-hour meter which concerns on this invention is removed from a unit case.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a Electric energy measuring unit 1b Switch unit 1c Communication unit 2 Extraction tool holding part 3 Unit fixing screw 4 Unit fixing hole 5 Terminal part 6 Unit case 7 Electrode 8 Infrared pulse output window 9 Display part 10 Insulating board 11 For insulating board fixing Screw 12 Electrode insertion portion 13 Extraction tool 14 Engagement portion 15 Support point portion 16 Arm portion 17 Grip portion

Claims (2)

An electric energy measuring unit for measuring the electric energy supplied to the load by the distribution line;
A switch unit that opens and closes between the electric energy measuring unit and the load;
Each unit of the electric energy measuring unit and the switch unit is attached, and a case having a socket structure for electrically connecting the unit and the distribution line,
A pulling member gripping part for gripping a pulling member whose tip for pulling out each unit attached to the case from the case is bent in a substantially J shape ;
Bei to give a,
The pull-out member gripping portion has a substantially L-shaped side surface portion and a bottom surface portion that are integrally formed on the housing side surface of each unit,
The side surface portion is provided at a position facing the mounting surface of the case when the respective units are mounted on the case, and separated from the mounting surface by a predetermined length,
The bottom surface portion is substantially perpendicular to the side surface portion and extends in the mounting surface direction of the case,
Engaging an engaging portion formed on the pullout member with a portion sandwiched between the side surface portion, the bottom surface portion, and the mounting surface of the case, and rotating the pullout member to move the units to the case. Electronic watt-hour meter, characterized by being pulled out from . An electric energy measuring unit for measuring the electric energy supplied to the load by the distribution line;
A communication unit for transmitting the amount of power measured by the power amount measurement unit to the outside;
A switch unit that opens and closes between the electric energy measuring unit and the load;
Each unit of the electric energy measuring unit, the communication unit and the switch unit is attached, and a case having a socket structure for electrically connecting the units and the distribution line,
A pulling member gripping part for gripping a pulling member whose tip for pulling out each unit attached to the case from the case is bent in a substantially J shape ;
Bei to give a,
The pull-out member gripping portion has a substantially L-shaped side surface portion and a bottom surface portion that are integrally formed on the housing side surface of each unit,
The side surface portion is provided at a position facing the mounting surface of the case when the respective units are mounted on the case, and separated from the mounting surface by a predetermined length,
The bottom surface portion is substantially perpendicular to the side surface portion and extends in the mounting surface direction of the case,
Engaging an engaging portion formed on the pullout member with a portion sandwiched between the side surface portion, the bottom surface portion, and the mounting surface of the case, and rotating the pullout member to move the units to the case. Electronic watt-hour meter, characterized by being pulled out from .

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