JP2014202531A - Automatic wire connection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic wire connection device that is adaptable to a plurality of types of watthour meters and can perform a performance test of many watthour meters without power transmission loss.SOLUTION: The automatic wire connection device of the present invention includes: a base 100 on which a watthour meter is installed during a test; a testing power supply unit 200 whose one end is connected to the watthour meter 500 installed on the base and the other end is connected to a testing device, and that supplies testing power to the watthour meter; and lifting/supporting means 300 that lifts up the testing power supply unit 200 in the height direction, and supports and fixes the testing power supply part 200 to prevent it from falling from a predetermined position.

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 ordinary houses, stores, factories, etc., and electricity charges charged by power companies are calculated based on the power consumption information measured by the electricity meters. 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 performance test is performed to confirm whether or not an accurate operation is ensured for the watt-hour meter before distribution.

In this performance test, an automatic connection device that electrically connects a test device serving as a supply source of test power to the watt hour meter and the watt hour meter is used. Techniques related to the automatic connection device are disclosed in, for example, the following patent documents.

Here, the outline of the watt-hour meter 500 is demonstrated using FIG. The watt-hour meter 500 has a box shape, and as shown in FIG. 5A, a monitor unit 510 that displays the measured power amount is provided on the surface thereof. Moreover, as shown in FIG.5 (b), the several electric current terminal 520 engaged with the cable for external power transmission is provided in a bottom face. The current terminal 520 is arranged in a current terminal arrangement hole 530 provided on the bottom surface of the watt-hour meter 500.

At the time of the performance test, as will be described later, a contact provided in the automatic wiring device is fitted into the current terminal arrangement hole 530 of the watt-hour meter 500. Thereby, a contact and the current terminal 520 arrange | positioned in the current terminal arrangement | positioning hole 530 contact. Here, the contact is also connected to a test apparatus that is a source of test power supplied to the watt-hour meter 500. The contact between the contact and the current terminal 520 makes it possible to supply test power to the watt-hour meter 500.

JP 2012-167992 A JP 2010-249777 A JP 2010-38767 A

However, depending on the type of watt-hour meter 500, the depth dimension of the current terminal arrangement hole 530 and the interval between adjacent current terminal arrangement holes 530 are different. For example, when a plurality of watt-hour meters 500 having different depth dimensions of the current terminal arrangement holes 530 are tested using the same automatic connection device, the watt-hour meter 500 of the current terminal 520 having a shallow (short) depth dimension. About, there is little insertion area to the current terminal 520 of a contact, and there is a possibility that stable contact between the contact and the current terminal 520 cannot be secured. In that case, much of the current supplied from the test apparatus is lost.

In order to avoid such a situation, a method such as designing a dedicated automatic connection device suitable for one type of watt-hour meter 500 has been adopted. The wiring device had to be redesigned, resulting in great costs.

In view of the above problems, an object of the present invention is to provide an automatic connection device that can be adapted to a plurality of types of watt-hour meters 500 and can perform performance tests of many watt-hour meters 500 without transmission loss. To do.

An automatic connection device according to the present invention for solving the above problems is as follows.
A test power supply having a base for installing the watt hour meter during testing of the watt hour meter and a contactor capable of contacting the watt hour meter and also connected to a test device for supplying test power to the watt hour meter Including
Elevating and lowering support means for raising and lowering the test power supply unit in the height direction and supporting and fixing the test power supply unit so as not to descend from a predetermined position,
The elevating support means raises the test power supply unit so that the contact of the test power supply unit and the watt hour meter are in contact with each other, and the position of the test power supply unit is fixed. The contact state between the contact and the watt-hour meter is maintained.

In the automatic connection device according to the present invention, it is preferable that the test power supply unit is detachably attached to the elevating support means, and a pedestal for placing the watt-hour meter is provided on the base. It is preferable that it is detachably attached.

According to the present invention, the electric power meter 500 having a shallow (short) current meter having a depth dimension of the current terminal arrangement hole 530 is provided by moving up and down the test power supply unit and fixing the test power supply unit at a predetermined position. Even when the test is performed, it is possible to provide an automatic connection device that enables stable contact between the contact and the current terminal 520 and can reduce loss of current supplied from the test device. Therefore, it is possible to test a plurality of types of watt-hour meters 500 regardless of the depth dimension of the current terminal arrangement hole 530.

Further, according to the present invention, the test power supply unit is configured to be detachably attached to the elevating support means so that the interval between adjacent current terminal arrangement holes 530 is different in one automatic connection device. Multiple types of watt-hour meters 500 can be tested. Furthermore, testing a plurality of types of watt-hour meters 500 of different sizes with one automatic connection device by adopting a configuration in which a pedestal for mounting the watt-hour meter is detachably attached to the base. Can do.

The front view of the automatic wiring apparatus 10 which concerns on this invention before the watt-hour meter 500 is set. The front view of the automatic connection apparatus 10 which concerns on this invention after the watt-hour meter 500 is set. The figure which shows the detail of the guide member provided in a base | substrate or a base. The figure which shows the detail of a test electric power supply part. The front view and bottom view of watt-hour meter 500.

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.

First, with reference to FIG.1 and FIG.2, 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 the automatic connection device 10 according to the present invention before the watt hour meter 500 is set, and FIG. 2 is a front view of the automatic connection device 10 according to the present invention after the watt hour meter 500 is set. 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 lifting support means 300, and the like. Here, it is preferable that a base 400 for mounting the watt hour meter 500 is attached to the base 100. 1 and 2 show the automatic connection device 10 in a state in which the base 400 is attached to the base 100. FIG. Therefore, in the present embodiment, the watt-hour meter 500 is placed on the pedestal 400.

The pedestal 400 is preferably detachably attached to the base 100 by an attachment member 410 such as a screw or a bolt. By adopting such a configuration, even when a plurality of types of watt-hour meters 500 are tested, it is possible to cope with them by attaching a base 400 that matches the size of the watt-hour meter 500.

The pedestal 400 preferably includes a guide member 420 that abuts the side surface of the watt-hour meter 500 and supports and fixes the watt-hour meter 500. Here, FIG. 3 shows details of the guide member 420. The guide member 420 includes a contact portion 421 that contacts the side surface of the watt-hour meter 500, and a contact portion support unit 422 that contacts the contact portion 421 and supports the contact portion 421. As shown in FIG. 3C (an arrow view seen from arrow A in FIG. 3A), the contact portion 421 supported by the contact portion support means 422 is erected on the base 400. It becomes.

Further, as shown in FIG. 3A, the contact portion support means 422 preferably supports the contact portion 421 so as to be swingable in the width direction. By providing such a contact portion support means 422, the contact portion 421 can be moved in accordance with the width of the watt hour meter 500, and can flexibly cope with the test of the watt hour meter 500 having different width dimensions. be able to.

In the present embodiment, a coil spring 422a is used as the contact portion support means 422. Further, as shown in FIG. 3A, a gap 423 in which a coil spring 422a can be installed is provided at a predetermined position of the base 400, and the coil spring 422a is arranged in the gap 423.

Here, the contact portion support means 422 is not limited to the coil spring 422a as long as it has a similar function, and for example, a member such as an actuator or a plunger that expands and contracts in the width direction may be used. In addition, instead of installing the contact portion support means 422 in the gap 423, a guide for controlling the moving direction of the contact portion support means 422 is provided, and the contact portion support means 422 is disposed on the guide. It may be. When the base 400 is not provided, the above-described guide member 420 may be provided on the base 100.

Next, the test power supply unit 200 will be described. The test power supply unit 200 is connected to both the watt-hour meter 500 and a test apparatus (not shown), and transmits test power supplied from the test apparatus to the watt-hour meter 500. The test power supply unit 200 includes a contactor 210 that contacts the current terminal 520 of the watt-hour meter 500 and a contactor placement part 220 for placing the contactor 210. In the present embodiment, the contact 210 and the test apparatus are connected via the cable 211.

Furthermore, the test power supply unit 200 preferably includes contact support means 230 that supports the contact 210 so as to be swingable. FIG. 4 shows details of the contact support means 230. FIG. 4 is a top view of the contact placement unit 220. The contact support means 230 is in contact with the contact 210 and supports the contact 210 in a state where it is erected on the contact placement portion 220. By providing such a contact support means 230, the contact 210 can be moved in accordance with the position of the current terminal arrangement hole 530, and the current meter arrangement hole 530 has a different interval between the watt-hour meters 500. The test can be flexibly handled.

In the present embodiment, a coil spring 230 a is used as the contact support means 230. Further, as shown in FIG. 4, a gap 231 in which the coil spring 230 a can be installed is provided at a predetermined position of the contact arrangement portion 220, and the coil spring 230 a is arranged in the gap 231.

Here, the contactor support means 230 is not limited to the coil spring 230a as long as it has a similar function, and for example, a member such as an actuator or a plunger that expands and contracts in the width direction may be used. Further, instead of installing these contact support means 230 in the gap 231, a guide for controlling the moving direction of the contact support means 230 is provided, and the contact support support means 230 is arranged on this guide. Good.

Next, the lifting support means 300 will be described with reference to FIGS. The elevation support means 300 is for moving the test power supply unit 200 up and down and fixing the position of the test power supply unit 200 at a predetermined position.

In the present embodiment, the lifting support means 300 includes a toggle clamp 310, a locking plate 320 that is joined to the toggle clamp 310 and that locks the contactor arrangement portion 220, and between the locking plate 320 and the base 100. And a guide rail 330 that controls the moving direction of the locking plate 320. In addition, it is preferable that the above-mentioned contact arrangement | positioning part 220 is attached from the latching plate 320 so that attachment or detachment is possible by the attachment member 321 like a screw or a volt | bolt.

The toggle clamp 310 includes a shaft 311, a link portion 312, a lever 313, a plate 314 for attaching these members, and the like. Here, one end of the shaft 311 is joined to the locking plate 320. Further, the other end of the shaft 311 and one end of the link portion 312, and the other end of the link portion 312 and the lever 313 are joined. The lever 313 is attached to the plate 314 so as to be rotatable about one end thereof.

Initially, one end of the link portion 312 is in contact with the plate 314, while the other end of the link portion 312 is in a state of floating from the plate 314. That is, the link portion 312 is inclined such that the other end side is disposed on the front side of the drawing.

On the other hand, when the lever 313 is rotated, the other end of the link portion 312 moves so as to approach the plate 314. That is, the entire link portion 312 is in contact with the plate 314. At this time, the link unit 312 receives a force pushed upward from the rotating lever 313.

Thereby, the link part 312 moves so that it may approach the plate 314, moving the whole upwards. Further, the shaft 311 joined to one end of the link portion 312 is also pushed upward. As a result, the shaft 311 rises, and the locking plate 320 and the test power supply unit 200 that engage with the shaft 311 also move up.

Here, the link 312 is provided with a gap 312 a for engaging the rotating lever 313. The lever 313 is locked by being engaged with the gap 312a. As a result, the rotation of the lever 313 in the reverse direction is restricted, and the reverse movement (moving downward in the drawing) of each element constituting the above-described lifting support means 300 is restricted, and the test power supply unit 200. The position of is fixed.

However, the lifting support means 300 is not limited to the above-described form, and a driving member such as an air cylinder or an electric actuator that joins the shaft 311 and moves it up and down may be used. In that case, these raising / lowering support means 300 shall be provided with the means to fix the position of the test electric power supply part 200. FIG.

The automatic connection device 10 includes a lifting support means 300 that moves the test power supply unit 200 up and down and fixes the test power supply unit 200 at a predetermined position, so that the current terminal arrangement hole 530 has a shallow (short) power amount. Even when the total 500 is tested, stable contact between the contact and the current terminal 520 can be achieved, and loss of current supplied from the test apparatus can be reduced.

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 (or the pedestal 400). Thereafter, by rotating the lever 313 associated with the toggle clamp 310 of the lifting support means 300, the link portion 312 and the shaft 311 are moved upward as described above.

As the shaft 311 moves up, the locking plate 320 joined to the shaft 311 moves up along the guide rail 330. At the same time, the contact placement portion 220 that is locked to the locking plate 320 is raised.

As the contact placement unit 220 moves upward, the contact 210 approaches the current terminal placement hole 530 of the watt hour meter 500 set on the base 100 (or the base 400), and finally fits into this. Include. Thereby, the contact 210 and the current terminal 520 arranged in the current terminal arrangement hole 530 come into contact with each other.

At this time, the lever 313 is fitted in the gap 312a provided in the link portion 312 and is locked while maintaining its posture. Thereby, the position of the link part 312 and the shaft 311 is fixed until the lever 313 is operated separately. As a result, the positions of the locking plate 320 and the contact arrangement part 220 are also fixed, the lowering of the contact 210 is prevented, and the contact state between the contact 210 and the current terminal 520 is maintained.

When the contact placement unit 220 is moved downward to release the contact between the contact 210 and the current terminal 520, the lever 313 is rotated in the opposite direction. In conjunction with this operation, the other end of the link portion 312 rises away from the plate 314, and the entire link portion 312 moves downward in the figure.

Thereby, the shaft 311 joined to one end of the link portion 312 is lowered, and the locking plate 320 and the contact placement portion 220 are also lowered. By this series of operations, the contact between the contact 210 and the current terminal 520 is released.

DESCRIPTION OF SYMBOLS 10 Automatic connection apparatus 100 Base 200 Test electric power supply part 210 Contactor 220 Contactor arrangement | positioning part 230 Contactor support means 300 Lifting support means 310 Toggle clamp 320 Locking plate 330 Guide rail 400 Base 420 Guide member 500 Power meter 510 Electric energy Display unit 520 Current terminal 530 Current terminal placement hole

Claims (6)

A test power supply having a base for installing the watt hour meter during testing of the watt hour meter and a contactor capable of contacting the watt hour meter and also connected to a test device for supplying test power to the watt hour meter An automatic connection device that electrically connects the watt-hour meter and the test device,
Elevating and lowering support means for raising and lowering the test power supply unit in the height direction and supporting and fixing the test power supply unit so as not to descend from a predetermined position,
The elevating support means raises the test power supply unit so that the contact of the test power supply unit and the watt hour meter are in contact with each other, and the position of the test power supply unit is fixed. The automatic connection device is characterized in that the contact state between the contact and the watt-hour meter is maintained. The automatic connection device according to claim 1, wherein the test power supply unit is detachably attached to the lift support means. Furthermore, the automatic connection apparatus of Claim 1 or 2 with which the base for mounting the said watt-hour meter is detachably attached to the said base | substrate. The base includes a guide member for supporting and fixing the watt-hour meter,
The guide member has a contact portion that contacts a side surface of the watt-hour meter;
The automatic connection device according to any one of claims 1 to 3, further comprising contact portion support means that contacts the contact portion and supports the contact portion so as to be swingable in a width direction. The pedestal includes a guide member for supporting and fixing the watt-hour meter,
The guide member has a contact portion that contacts a side surface of the watt-hour meter;
The automatic connection device according to any one of claims 1 to 3, further comprising contact portion support means that contacts the contact portion and supports the contact portion so as to be swingable in a width direction. The automatic test apparatus according to any one of claims 1 to 5, wherein the test power supply unit includes contact support means for supporting the contact so as to be swingable in a width direction.

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