JP2002365314A - Terminal block for watt-hour meter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal block for watt-hour meter, capable of reducing the cost of a watt-hour meter by arranging a measurement pulse service terminal, a communication terminal, and a switch part without having to increase the dimension of the terminal block, while ensuring insulation performance or weather resistance performance. SOLUTION: In this terminal block for watt-hour meter which is capable of being housed in an outer box for watt-hour meter, the switch part 10 formed of a return switch 4, a set/storage switch 5 and a figure feed switch 6 is arranged in an upper part, relative to the measuring pulse service terminal 2 and the communication terminal 3, and the switch part 10 is integrated into another recessed piece block 9 which is different from the terminal block 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block for a watt-hour meter which can be stored in an outer case of the watt-hour meter.

[0002]

2. Description of the Related Art FIG. 9 is a front view of a conventional composite instrument.
FIG. 10 shows a front view of a conventional household watt-hour meter.

[0003] Large-scale customers who make demand contracts use a complex meter for measuring power factor, demand power, hourly power amount, etc., as a trading instrument for power amount. Measures metric items such as precise daily power, force measurement active power, force measurement reactive power, and demand power. Also,
In recent years, a compound watt-hour meter having a communication function has become widespread in order to streamline meter reading operations and supply data to customers.

[0004] Composite meters are used at the cost of the electric power company to provide electricity because they are used to trade electricity.
The cost will be capital investment of the power company and will be reflected as it is in the electricity rate. For this reason, there is a demand for an instrument that can measure even a little inexpensively.

[0005] As a cost reduction means for providing an inexpensive instrument, commonality of components, miniaturization, and the like are considered.
First, the common use of components means that components that are mass-produced and have mass production effects are used in common. The home watt-hour meter is installed at general consumers nationwide with a time zone contract and has a greater demand than the composite watt-hour meter. Therefore, it is desirable to share parts with the home watt-hour meter.

The home watt-hour meter shown in FIG. 10 has fewer functions and measurement items than the composite meter shown in FIG. be able to. For this reason, another switch cover 15 is provided on the cover 14 like a composite instrument, and the return switch 4 for the maximum demand power is set therein.
It is not necessary to provide the storage switch 5 and the number feed switch 6. For this reason, a gauge can be manufactured by press working with a simple shape, and an inexpensive outer box can be manufactured by mass production effects.

On the other hand, the composite meter shown in FIG. 9 has functions such as a metering pulse service to a customer, communication, time setting, and maximum demand power return, as compared with the home watt-hour meter shown in FIG. To achieve these, a measuring pulse service terminal 2, a communication terminal 3, a return switch 4 for maximum demand power, a setting / memory switch 5, a number feed switch 6, and an earphone jack 8 are required. The return switch 4, the setting / memory switch 5, and the number feed switch 6 are provided in another switch cover 15 provided on the cover 14 and capable of sealing power. To form another switch cover 15 for the cover 14 while ensuring the weather resistance, the shape of the cover 14 becomes complicated. For this reason, the outer box of the composite instrument cannot be pressed, and is processed by die molding such as die casting, so that the cost of the outer box is expensive.

In order to make the outer box of the composite meter common to the outer box of the home watt-hour meter, it is necessary to reduce the size of the terminal block 12 and to measure pulses for realizing the function of the composite meter. It is necessary to provide the terminal block 13 with the configuration of the service terminal 2, the communication terminal 3, the switches 4, 5, 6, and the earphone jack 8. This is terminal block 1
3 are contradictory because they are in the direction of enlargement.

On the other hand, since the watt-hour meter is used for the transaction of electricity bills, the watt-hour meter is subjected to a 100-percent verification and is sealed so that the inside cannot be opened within the valid period. In addition, the parts managed by the electric power company are sealed with electric power. Such watt-hour meters are required to have different weather resistance performance depending on the usage environment.In the case of reinforced weather and normal weather type meters, there are items such as water injection tests, etc. When the space is opened, the structure of the window becomes complicated in order to secure the water injection performance, and the cost increases.

In order to realize the function of the composite meter in the outer case of the home watt-hour meter, it is conceivable to reduce the size of the terminal block 12, the terminal 7, and other components, respectively. Insulation performance is required between circuits, between electric circuits and the case, between the electric circuits such as the measuring pulse service terminal 2 and the communication terminal 3 and between the cases. For this reason, extremely miniaturization reduces the insulation distance and makes it impossible to ensure insulation performance.

Further, a terminal 7 to which a current or a voltage is input
In the case of an overcurrent or overvoltage, the metal fitting itself needs to have a certain size so that there is no abnormality when an overcurrent or an overvoltage is applied, and the power loss does not increase.

[0012] Further, since the lightning impulse performance required by the electric power company in the watt hour meter is required to be 6 kV or more at present, an insulating partition wall between terminals is also required, which is an obstacle to miniaturization. one of.

[0013]

As described above, in order to realize the function of the composite meter at a low cost, it is desirable to divert the outer case of a large-scale household watt-hour meter.
For this purpose, the measuring pulse service terminal 2, the communication terminal 3, the switch 4,
The terminals 5 and 6 need to be configured in the terminal block 13, which causes the terminal block 13 to be enlarged, and the outer box cannot be used. Also, as one of the cost reduction methods, there is a method of reducing dimensions such as terminal intervals in order to reduce the size,
When the terminal interval is reduced, the insulation distance is reduced, and the insulation performance is reduced. Further, reducing the size of the terminal 7 cannot be extremely reduced because there is a concern that heat generation and power loss due to overcurrent increase.

According to the present invention, the measuring pulse service terminal, the communication terminal, and the switch unit are arranged without increasing the dimensions of the terminal block while ensuring insulation performance and weather resistance, thereby reducing the cost of the watt hour meter. It is an object of the present invention to provide a terminal block for a watt hour meter.

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a watt-hour terminal block that can be housed in an outer box of a watt-hour meter, wherein a terminal block for a measuring pulse service terminal and a communication terminal are provided. And a switch section is disposed on the upper or lower side, and the switch section is incorporated in another concave piece block different from the terminal block.

According to the present invention, since the switch section is disposed above or below the measuring pulse service terminal and the communication terminal, it is not necessary to increase the size of the terminal block.
The cost of the watt hour meter can be reduced. Further, since the switch section is incorporated into another piece block having a concave shape different from the terminal block, insulation performance and weather resistance can be easily ensured.

A watt hour meter terminal block that can be housed in an outer case of the watt hour meter, wherein a switch unit is disposed above or below the metering pulse service terminal and the communication terminal, and a metering pulse service terminal is provided. The communication terminal, the communication terminal, and the switch unit are incorporated in another concave piece block different from the terminal block, and the other piece block is incorporated in the terminal block as a unit.

According to the present invention, since the switch section is disposed above or below the measuring pulse service terminal and the communication terminal, the size of the terminal block does not need to be increased.
The cost of the watt hour meter can be reduced. In addition, the switch unit, the weighing pulse service terminal and the communication terminal are previously assembled in a separate concave block different from the terminal block, and the separate block is assembled as a unit into the terminal block, so that the weighing pulse is directly transmitted to the terminal block. The installation work can be performed more easily than when the service terminal and the communication terminal are installed.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a terminal block for a watt-hour meter according to the present invention.

(First Embodiment) FIG. 1 is a front view showing a state in which another concave piece block is incorporated in a watt-hour terminal block according to a first embodiment. FIG. 2 is a front view showing a state in which a metering pulse service terminal, a communication terminal, and another concave piece block are incorporated into the watt-hour terminal block according to the first embodiment. FIG. 3 is a perspective view showing a state in which the switch unit is incorporated in the concave separate piece block according to the first embodiment. FIG. 4 shows A in FIG.
It is sectional drawing between -A. FIG. 5 is a front view showing the watt hour meter having the terminal block for the watt hour meter and the concave separate piece block according to the first embodiment.

A watt-hour meter terminal block (hereinafter referred to as a terminal block) 1 shown in FIG. 1 is an elongated terminal block that can be housed in an outer box of a home watt-hour meter as shown in FIG. A terminal 7 is disposed in the terminal block 1 from a substantially left end to a substantially center, and a switch unit 10 including switches 4, 5, and 6 is disposed on a right side and an upper side of the terminal 7; The metering pulse service terminal 2 and the communication terminal 3 are arranged on the right side and the lower side of 7. An earphone jack 8 is arranged at a substantially right end of the terminal block 1.

The switch section 10 comprises a return switch 4 for maximum demand power, a setting / storage switch 5 and a numeric feed switch 6, and as shown in FIG. 1 is covered with another piece block 9 made of a concave phenol resin or the like. For this reason, insulation performance between the switch unit 10 and the measuring pulse service terminal 2 and the communication terminal 3 can be ensured.

The measuring pulse service terminal 2 and the communication terminal 3 are tightened with terminal screws 17 as shown in FIG.

As described above, according to the watt-hour terminal block according to the first embodiment, as shown in FIG.
The measuring pulse service terminal 2 and the communication terminal 3 are incorporated in the terminal block 1, and a concave type in which a switch unit 10 including switches 4, 5, and 6 is incorporated above the incorporated measuring pulse service terminal 2 and the communication terminal 3. The piece block 9 is arranged and assembled into the terminal block 1.

That is, by arranging the metering pulse service terminal 2 and the communication terminal 3 and the switch unit 10 up and down in the terminal block 1, the width of the terminal block 1 can be reduced to the width of the conventional home watt-hour meter. The terminal block 13 can be made the same size as the terminal block 13, and the width of the terminal block 1 does not need to be increased. For this reason, the outer box of the composite meter and the outer box of the household watt-hour meter can be shared, and the cost of the watt-hour meter can be reduced due to mass production effects.

The measuring pulse service terminal 2 and the communication terminal 3 are in direct contact with each other for use by the user, and are preferably insulated from the circuit of the switch unit 10. Therefore, by covering the switch section 10 with the concave separate piece block 9, insulation performance and weather resistance can be easily ensured. Further, there is no trouble in assembling work and switch operation.

(Second Embodiment) Next, a wattmeter terminal block according to a second embodiment of the present invention will be described. FIG. 6 is a rear perspective view showing a state in which a measuring pulse service terminal, a communication terminal, and a switch unit are incorporated in another concave piece block according to the second embodiment. FIG. 7 shows the second
It is a front perspective view showing the state where a measuring pulse service terminal, a communication terminal, and a switch part were built into another concave piece block concerning an embodiment. FIG. 8 is a front view showing a state in which a metering pulse service terminal, a communication terminal, and another concave piece block are incorporated in a watt-hour meter terminal block according to the second embodiment.

As shown in FIG. 6, the concave separate piece block 11 incorporates the switch section 10 in the upper part,
The measuring pulse service terminal 2 and the communication terminal 3 are configured to be incorporated in the lower part.

As described above, according to the watt-hour meter terminal block according to the second embodiment, as shown in FIG.
The measuring pulse service terminal 2 and the communication terminal 3 are incorporated in the device. Thereafter, as shown in FIG.
Is integrated into the terminal block 16. Thereby, the terminal block 16 in which the switch unit 10, the measuring pulse service terminal 2, and the communication terminal 3 are arranged vertically can be configured.

That is, the switch unit 10, the measuring pulse service terminal 2 and the communication terminal 3 are previously assembled into another concave piece block 11 different from the terminal block 16, and the other piece block 11 is assembled into the terminal block 16 as a unit. This makes it easier to incorporate the measuring pulse service terminal 2 and the communication terminal 3 directly into the terminal block 16. Thereby, work efficiency is improved.

Further, since the switch section 10 is disposed above or below the measuring pulse service terminal 2 and the communication terminal 3, the size of the terminal block 16 does not need to be increased.
The cost of the watt hour meter can be reduced.

[0032]

According to the present invention, in order to share parts,
The metering service pulse terminal, communication terminal, and switch section for realizing the functions of the compound meter are provided in the terminal block, and the insulation and weather resistance required for the watt-hour meter are secured, while the terminals of the conventional compound meter are secured. The block can be of the same size as a terminal block of a household watt-hour meter. As a result, the outer box can be shared with the home watt-hour meter, and the cost of the watt-hour meter can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which another concave piece block is incorporated in a wattmeter terminal block according to a first embodiment.

FIG. 2 is a front view showing a state in which a metering pulse service terminal, a communication terminal, and another concave piece block are incorporated into the watt-hour terminal block according to the first embodiment;

FIG. 3 is a perspective view showing a state in which a switch unit is incorporated in another concave piece block according to the first embodiment.

FIG. 4 is a sectional view taken along line AA of FIG. 1;

FIG. 5 is a front view showing a watt hour meter having a terminal block for a watt hour meter and a concave separate piece block according to the first embodiment.

FIG. 6 is a rear perspective view showing a state in which a measuring pulse service terminal, a communication terminal, and a switch unit are incorporated in another concave piece block according to the second embodiment.

FIG. 7 is a front perspective view showing a state in which a measuring pulse service terminal, a communication terminal, and a switch unit are incorporated in another concave piece block according to the second embodiment.

FIG. 8 is a front view showing a manner in which a metering pulse service terminal, a communication terminal, and another concave piece block are incorporated in a watt-hour meter terminal block according to the second embodiment.

FIG. 9 is a front view of a conventional composite instrument.

FIG. 10 is a front view of a conventional household electricity meter.

[Explanation of symbols]

1, 12, 13, 16 ... terminal block, 2 ... measuring pulse service terminal, 3 ... communication terminal, 4 ... return switch, 5 ...
Setting / memory switch, 6: numeric feed switch, 7: terminal, 8: earphone jack, 9, 11: separate piece block, 10: switch unit, 14: cover, 15: switch cover, 17: terminal screw.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshifumi Kasamatsu 1-5-1 Yaguchi, Ota-ku, Tokyo F-term in Toshiba Meter Techno Co., Ltd. 5G034 AB01 AE10

Claims (2)

[Claims] 1. A watt-hour meter terminal block that can be housed in an outer case of a watt-hour meter, wherein a switch unit is disposed above or below a measuring pulse service terminal and a communication terminal, and the switch unit is connected to a terminal. A wattmeter terminal block, wherein the terminal block is incorporated in another concave piece block different from the block. 2. A watt-hour meter terminal block that can be housed in an outer case of a watt-hour meter, wherein a switch unit is disposed above or below a measuring pulse service terminal and a communication terminal, and a metering pulse service terminal is provided. A terminal block for a watt-hour meter, wherein the communication terminal, the communication terminal, and the switch section are incorporated in another concave piece block different from the terminal block, and the other piece block is incorporated in the terminal block as a unit.