JP6153001B2 - Automatic connection device - Google Patents

Description

The present invention relates to an automatic connection device for electrically connecting an electronic watt-hour meter and a test apparatus in order to perform a performance test of the watt-hour meter, particularly an electronic watt-hour meter.

Electricity meters that measure power consumption are installed in buildings such as general houses, stores, factories, etc., but the electricity bill charged by the power company is based on the power consumption information measured by the electricity meter. Calculation is done. For this reason, if the power consumption is not accurately measured in the watt hour meter, the calculation of the power charge will be incorrect. In order to avoid such a situation, a test is performed to confirm whether or not an accurate operation is ensured with respect to the watt-hour meter before distribution.

As the above test method, the current terminal and voltage terminal of the watt-hour meter to be tested are electrically connected to the test apparatus, the power source provided on the test apparatus side is driven, and the watt-hour meter is used for the test. After supplying electric power, a method is adopted in which the electric energy information measured by the watt-hour meter is compared with the reference electric energy information actually supplied from the test apparatus. In this test, an automatic connection device is used to connect the terminal of the watt-hour meter and the test device.

Here, as a technique for comparing the electric energy information actually supplied from the test apparatus with the electric energy information measured by the watt hour meter, a technique described in Patent Document 1 below is disclosed. The technique described in Patent Document 1 is used for testing an electronic watt-hour meter including an information transmission unit that transmits information according to supplied electric energy information, and receives electric energy information from the information transmission unit. The arm provided with the information receiving part to be arranged is arranged on the side of the watt-hour meter installed for the test. The arm rotates on the front side of the watt-hour meter and moves until the information reception unit and the information transmission unit face each other, whereby transmission / reception of the power amount information is performed, and the transmitted power amount information and the reference power are transmitted. The test is performed by comparing with competence information.

JP 2012-83319 A

The invention described in Patent Document 1 is configured such that the arm is attached to the upper surface of the arm attachment portion. The arm attachment portion is a substantially rectangular parallelepiped member having a predetermined height. Therefore, when the watt hour meter is installed or removed during the test, the movement of the watt hour meter is restricted in a predetermined direction by the arm mounting portion. Therefore, it has the subject that the working efficiency concerning a test reduces. Further, when installing or removing the watt-hour meter, the watt-hour meter may come into contact with the arm mounting portion and either of them may be damaged. Furthermore, there is a problem that the manufacturing cost is increased in that an arm mounting portion must be separately installed.

In view of the above problems, the present invention improves work efficiency without limiting the movement of the watt hour meter during installation or removal of the watt hour meter, and damages the watt hour meter during the work. An object of the present invention is to provide an automatic connection device capable of solving the above-mentioned problems. It is another object of the present invention to provide an automatic connection device that can reduce manufacturing costs.

An automatic connection device according to the present invention for solving the above problems is as follows.
A base for installing the watt hour meter during a test of the watt hour meter, a test power supply unit having a contact portion with the watt hour meter and also connected to a test device for supplying test power to the watt hour meter; Including
A test power measuring mechanism for measuring the amount of test power supplied via the test power supply unit;
The test power measurement mechanism includes:
A power information receiving unit for receiving test power amount information transmitted from a predetermined location of the watt-hour meter;
A power information measuring unit for measuring the test power amount information received by the power information receiving unit;
The power information receiving unit is disposed at one end, and with respect to the base, a rotation arm that rotates to invert the other end side as a fulcrum,
When measuring the test electric energy, the rotating arm rotates to a position where the electric power information receiving unit and the electric power information transmission part of the electric energy meter are opposed to each other, and transmission / reception of the test electric power information is performed. And

Moreover, the automatic connection device according to the present invention is
The base has a through groove for accommodating the rotating arm of the test power measuring mechanism;
The other end side of the rotating arm is pivotally supported at a predetermined location of the through groove,
When the test electric energy is not measured, it is preferable that the rotating arm is disposed in the through groove. Furthermore, the base preferably has a pedestal for placing the watt-hour meter, and the length of the rotating arm is preferably variable.

According to the present invention, the rotating arm is pivotally supported on the base and is configured to rotate and move so as to be inverted with respect to the base. Therefore, when installing or removing the watt-hour meter during the test, it is possible to move the rotating arm to a position in close contact with the base, and the movement of the watt-hour meter is not limited. Therefore, it is possible to provide an automatic connection device capable of improving work efficiency and solving problems such as damage to the watt hour meter during work. Moreover, since it is a simple structure which pivotally supports a rotation arm on a base | substrate, the automatic connection apparatus which can reduce manufacturing cost can be provided.

The front view of the automatic connection apparatus of the state which turned the rotation arm upside down. The front view of an automatic connection apparatus in case a rotation arm exists in an initial position. The side view of an automatic connection apparatus.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention can be implemented in many different modes and should not be construed as being limited to the description of the embodiments described below.

Next, with reference to FIGS. 1-3, the whole structure of the automatic connection apparatus which concerns on one Embodiment of this invention is demonstrated. FIG. 1 is a front view of an automatic wire connection device according to the present invention in a state where a rotating arm (described later) is inverted, and FIG. 2 is a view of the automatic wire connection device according to the present invention in a state where the rotation arm is in an initial position. FIG. 3 is a front view of the automatic connection device according to the present invention. In addition, the state where the rotation arm is inverted means a state where the rotation arm drawn by a solid line is substantially perpendicular to the base (described later) as shown in FIGS. 1 and 3. Further, the state where the rotating arm is in the initial position means a state where the rotating arm is in close contact with the base as shown in FIG.

As shown in FIGS. 1 and 2, the automatic connection device 10 according to the present embodiment includes a base 100, a test power supply unit 200, a test power measurement mechanism 300, a lifting mechanism 400, and the like. As shown in FIG. 1, an electronic watt hour meter 500 is installed on the base 100. Using this automatic connection device 10, a test device (not shown) that supplies test power to the test power supply unit 200 and the electronic watt-hour meter 500 are connected during testing.

The base 100 is a member for installing the electronic watt-hour meter 500 as described above, and has a plate shape in the present embodiment. As shown in FIG. 2, the base 100 may include a pedestal 110 on which the electronic watt-hour meter 500 is placed.

The test power supply unit 200 is connected to an electronic watt-hour meter 500 and a test device (a device that generates power to be supplied to the electronic watt-hour meter 500), and the test power supplied from the test device is an electronic watt-hour meter. It is for sending to 500. The test power supply unit 200 and the electronic watt-hour meter 500 are connected via a contact unit provided in the test power supply unit 200.

The test power supply unit 200 includes a current terminal contact unit 210 that contacts the current terminal of the electronic watthour meter 500, a voltage application unit 220 that applies a predetermined voltage to the electronic watthour meter 500, and a current terminal contact unit 210. The structure includes an insulating block 230 that supports and fixes the voltage application unit 220. Here, the current terminal contact portion 210 functions as a contact portion with the electronic watt-hour meter 500 described above.

As shown in FIG. 1, the current terminal of the electronic watt-hour meter 500 is installed in a terminal arrangement hole 510 for arranging a current terminal provided on the bottom surface. The current terminal contact portion 210 of the automatic connection device 10 is inserted into the terminal arrangement hole 510 and contacts the current terminal. In the 120A electronic watt-hour meter 500 or the like, the supplied current is extremely large. Therefore, it is preferable that the contact point between the current terminal and the current terminal contact portion 210 is in close contact with no gap.

Here, the current terminal contact portion 210 is also electrically connected to the test apparatus (see FIG. 3). As a result, the test power supplied from the test apparatus is sent to the electronic watt-hour meter 500 via the current terminal contact portion 210. The connection between the current terminal contact portion 210 and the test apparatus is not particularly limited as long as desired power can be supplied to the current terminal contact portion 210.

The test power measuring mechanism 300 is for measuring test power information transmitted from the electronic watt-hour meter 500. In general, the electronic watt-hour meter 500 includes a power information transmission unit 520 that transmits information corresponding to the test power amount supplied from the test apparatus. The power information transmitter 520 of the electronic watt-hour meter 500 used in the present embodiment transmits the test power information by pulsed infrared light.

In the present embodiment, the test power measurement mechanism 300 receives the test power amount information transmitted from the power information transmission unit 520 and is measured by the electronic watt-hour meter 500 based on the received test power amount information. Measure the test power. In addition, the measured test electric energy is compared with the reference test electric energy actually supplied to the electronic watt-hour meter 500, and the electronic watt-hour meter 500 accurately measures the electric energy. It may have a function of determining whether or not.

The test power measuring mechanism 300 includes a power information receiving unit 310, a power information measuring unit (not shown), a rotating arm 320, and the like. The power information reception unit 310 receives test power amount information from the power information transmission unit 520 of the electronic watt-hour meter 500. In the present embodiment, a light receiving element such as a photodiode is used as the power information receiving unit. However, the present invention is not limited to this as long as the test power amount information can be received.

The power information measuring unit receives the test power amount information received by the power information receiving unit 310, and determines how much the test power amount measured by the electronic watt-hour meter 500 is based on the test power amount information. It is to be measured. In addition, the power information measurement unit may include a comparison unit with the above-described reference test power amount and a determination unit that determines whether or not the accurate measurement of the power amount is performed.

The rotating arm 320 is for moving the power information receiving unit 310 to a position facing the power information transmitting unit 520 of the electronic watt-hour meter 500. In the present embodiment, as shown in FIG. 1, the power information receiving unit 310 is attached to the end 320 </ b> A of the rotating arm 320.

Further, the through groove 120 may be provided in the base 100, and the rotating arm 320 may be disposed there. In this case, it is preferable that the other end side 320 </ b> B of the rotating arm 320 is pivotally supported on a shaft 122 provided on the side wall of the through groove 120, for example, so as to be pivotable about this. In the present embodiment, a support 121 for supporting the rotating arm 320 (the solid line in FIG. 3) in an inverted state is further attached to the through groove 120. Note that a drive device such as a motor may be provided at a location where the rotation arm 320 is pivotally supported, and the rotation arm 320 may be mechanically rotated by being activated. However, it goes without saying that a form in which the rotating arm 320 is moved manually may be adopted.

Even if the through-groove 120 is not provided in the base 100 and the other end side 320B of the rotating arm 320 is attached to a predetermined location on the surface of the base 100 (the surface on which the electronic watt-hour meter 500 is installed). Good. In this case, the turning arm 320 is attached so that it can be inverted with the other end side 320B as a fulcrum.

By providing the rotating arm 320, for example, when not in use, such as before and after a test, the entire rotating arm 320 can be moved to a position where the entire rotating arm 320 is brought into close contact with the substrate 100. Therefore, when the electronic watt-hour meter 500 is installed or removed from the base 100, unlike the technique described in Patent Document 1, for example, the electronic watt-hour meter 500 can be moved not only from above but also from the side. it can. That is, restrictions on the movement for installation or removal of the electronic watt-hour meter 500 are greatly reduced, the work efficiency related to the test is improved, the electronic watt-hour meter 500 is damaged by touching other members, etc. Trouble can be solved.

In addition, when the base 110 is provided on the base 100, the electronic watt-hour meter 500 is disposed further forward (front side in FIG. 1), and thus there is a restriction on movement for the installation or removal of the electronic watt-hour meter 500. It is further relaxed.

The rotating arm 320 may include a mechanism for adjusting the length thereof as indicated by arrows A and B in FIG. Thereby, the position of the power information receiving unit 310 attached to the end portion 320A of the rotating arm 320 can be adjusted according to the position of the power information transmitting unit 520 that differs depending on the type of the electronic watt-hour meter, for example. .

Further, the power information receiving unit 310 and the rotating arm 320 may be connected via a shaft 330 that can rotate the power information receiving unit 310 as indicated by an arrow in FIG. By adopting such a configuration, it becomes possible for the power information receiving unit 310 to adjust the position so that the power information receiving unit 310 is arranged in front of the power information transmitting unit 520, thereby preventing problems such as failure to receive the transmitted information. be able to.

The raising / lowering mechanism 400 is connected to the test power supply unit 200 and is used to raise and lower it. In the present embodiment, the elevating mechanism 400 includes a shaft 410 that is responsible for raising or lowering the test power supply unit 200 such as the current terminal contact unit 210, a shaft elevating unit 420 that moves the shaft 410 up and down, and the current terminal contact unit 210. And a support member 430 for supporting and fixing. Further, the support member 430 is locked to the shaft 410. The shaft elevating unit 420 is not particularly limited as long as it can move the shaft 410 up and down, but an electric actuator or the like is conceivable.

Next, the operation of the automatic connection device 10 according to the present invention will be described. First, the electronic watt-hour meter 500 is installed on the base 100. At this time, the electronic watt-hour meter 500 is moved from, for example, the upper side of FIG. 1, and the current terminal contact portion 210 is inserted into the terminal arrangement hole 510 of the electronic watt-hour meter 500. Thereby, the position of the electronic watt-hour meter 500 is fixed.

Next, the shaft elevating part 420 of the elevating mechanism 400 is driven to move the shaft 410 upward in FIG. When the shaft 410 moves upward, the current terminal contact portion 210 supported and fixed to the shaft 410 also moves upward, and the current terminal of the electronic watt-hour meter 500 and the current terminal contact portion 210 come into contact with each other. As a result, the test apparatus and the electronic watt-hour meter 500 are connected, and a test power can be supplied to the electronic watt-hour meter 500.

In addition, when the electronic watt-hour meter 500 is installed on the base 100, the rotating arm 320 is rotated from the initial position to the inverted state by mechanical or human means. As a result, the power information receiving unit 310 moves to a position facing the power information transmitting unit 520 of the electronic watt-hour meter 500. This operation can be performed after the electronic watt-hour meter 500 is installed on the base 100 regardless of before and after the connection work between the above-described test apparatus and the electronic watt-hour meter 500.

After the above-described connection work and rotation of the rotating arm 320, the test apparatus is driven to supply test power to the electronic watt-hour meter 500. At this time, the test power amount information is transmitted from the power information transmission unit 520 of the electronic watt-hour meter 500 (in the case of the present embodiment, pulsed infrared light). The power information receiving unit 310 receives the transmitted test power amount information.

The test power amount information received by the power information receiving unit 310 is transmitted to the power information measuring unit. The transmitted test power amount information is measured as, for example, the power amount measured by the electronic watt-hour meter 500 in the power information measurement unit. This electric energy is compared with the electric energy (for reference) actually supplied to the electronic watt-hour meter 500, and it is determined whether or not the measurement of the electronic watt-hour meter 500 is accurately performed. . The power amount comparison procedure and the determination procedure may be performed by the power information measurement unit, or may be performed by another measurement device or an information processing device.

After the measurement is completed, the driving of the test apparatus is stopped and the supply of the test power to the electronic watt-hour meter 500 is stopped. Then, the shaft lifting / lowering part 420 of the lifting / lowering mechanism 400 is driven to move the shaft 410 downward in FIG. . At the same time, the current terminal contact portion 210 of the test power supply unit 200 is lowered, and the contact between the terminal arrangement hole 510 and the current terminal contact portion 210 of the electronic watt-hour meter 500 is released.

Finally, the rotating arm 320 in an inverted state is returned to the initial position, the electronic watt-hour meter 500 is removed from the base 100, and the test is completed. Note that although the electronic watt-hour meter 500 is described as being installed or removed from the base 100 in FIG. 1 above or below, the initial position of the rotating arm 320 is close to the base 100, so that FIG. It is also possible to install / remove the electronic watt-hour meter 500 from one side.

DESCRIPTION OF SYMBOLS 10 Automatic connection apparatus 100 Base 110 Pedestal 120 Through-groove 121 Support tool 122 Shaft 200 Test power supply part 210 Current terminal contact part 220 Voltage application part 230 Insulation block 300 Test power measurement mechanism 310 Power information receiving part (light receiving element such as a photodiode) )
320 Rotating arm 320A Rotating arm end portion 330 Rotating arm end shaft portion 400 Lifting mechanism 410 Shaft 420 Shaft lifting portion 430 Support member 500 of current terminal contact portion 210 Electronic watt-hour meter 510 Current terminal contact portion Hole 520 for placing 210 Power information transmitter (infrared pulsed light emitting element)

Claims (4)

A base for installing the watt hour meter during a test of the watt hour meter, a test power supply unit having a contact portion with the watt hour meter and also connected to a test device for supplying test power to the watt hour meter; An automatic connection device for electrically connecting the watt-hour meter and the test device,
A test power measuring mechanism for measuring the amount of test power supplied via the test power supply unit;
The test power measurement mechanism includes:
A power information receiving unit for receiving test power amount information transmitted from a predetermined location of the watt-hour meter;
A power information measuring unit for measuring the test power amount information received by the power information receiving unit;
The power information receiving unit is disposed at one end, and with respect to the base, a rotation arm that rotates to invert the other end side as a fulcrum,
When measuring the test power amount, the rotating arm rotates to a position where the power information receiving unit and the power information transmission point of the watt hour meter are opposed to each other, and transmission / reception of test power information is performed. Automatic connection device to do. The base has a through groove for accommodating the rotating arm of the test power measuring mechanism,
The other end side of the rotating arm is pivotally supported at a predetermined location of the through groove,
The automatic connection device according to claim 1, wherein when the test electric energy is not measured, the rotating arm is disposed in the through groove. The automatic connection device according to claim 1, wherein the base includes a pedestal for placing the watt-hour meter. The automatic connection device according to any one of claims 1 to 3, wherein the length of the rotating arm is variable.

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