JP2012103018A - Contactor and automatic wire threader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress electrical resistance and a calorific value at a contact portion between a watt-hour meter and an automatic wire threader to be small when electric power is supplied from a test device to the watt-hour meter.SOLUTION: The automatic wire threader includes: a contactor in contact with the watt-hour meter; a watt-hour meter storage part capable of storing the watt-hour meter therein; a contactor base plate part in which the contactor is erected; a watt-hour meter push-in means which pushes the watt-hour meter in toward the contactor base plate part from the upper side; and a shaft movement means by which a shaft of the watt-hour meter push-in means is slidingly moved in the vertical direction.

Description

The present invention relates to an automatic connection device and an automatic connection device that are mainly used in performance tests of a watt-hour meter and electrically connect a current terminal of the watt-hour meter and an automatic connection device.

Buildings such as buildings, houses, factories, and the like are equipped with watt-hour meters for measuring the amount of power consumed in the buildings. A test (hereinafter simply referred to as “test”) is performed on the watt-hour meter to determine whether the measurement accuracy satisfies a predetermined standard before shipping. At that time, in order to reduce the time loss until shipment as much as possible, the work of setting the watt hour meter in the test equipment (specifically, the electrical connection between the test equipment and the watt hour meter) is not a manual work but an automatic connection. This is done using a device (automatic connection device). With respect to this automatic connection device, techniques described in the following patent documents are disclosed.

In Patent Document 1,
It is fitted with a cylindrical terminal provided in the watt hour meter, and includes a current terminal having a split groove that divides the tip portion in the axial direction,
Inside the current terminal, a tube inserted up to the position reaching the split groove is arranged,
When the compressed gas is supplied to the tube, the tube expands, and the tip of the current terminal expands, so that the current terminal and the cylindrical terminal come into contact with each other, and the watt hour meter An automatic connection device is disclosed in which connection is made.
Further, the automatic wire connector holds the current terminal and includes an insulating block that can slide to the left and right to position the current terminal according to the position of the cylindrical terminal of the watt-hour meter. Is possible.

JP 2001-235527 A

However, the technique described in Patent Document 1 includes a current terminal tip, it is necessary to place the order of the tubes inside the current terminal contacting the tubular terminal of the power meter, in terms of operating costs There are challenges.

Moreover, since the technique described in Patent Document 1 is a configuration in which members that are not elastically deformed (the current terminal tip and the cylindrical terminal) are in contact with each other, each contact point does not have a planar shape, and as a result, The contact area is limited. In particular, the connection position between the watt-hour meter and the automatic connection device is not always constant for each test, and a slight shift occurs, so that the contact area between the current terminal tip and the cylindrical terminal may be small. Therefore, for example, when testing a watt hour meter to which a large amount of power is supplied, such as a watt hour meter having a rated current of 120 A, the electrical resistance at the contact portion increases and the amount of heat generated at the location also increases. There is a problem.

The present invention provides a watt-hour meter with a simple configuration, capable of reducing the work cost, widening the contact area between the automatic connection device and the watt-hour meter, and supplying a large amount of power as described above. It is an object of the present invention to provide a contactor capable of suppressing electrical resistance and heat generation at a contact portion when testing, and an automatic connection device including the contactor.

The contact according to the present invention for solving the above-mentioned problems is
A contactor for electrically connecting a watt-hour meter including a current terminal and an automatic connection device,
A conductive base that is fixedly attached to a predetermined portion of the automatic connection device; and
A first conductive part that contacts the current terminal and elastically deforms when pressed,
The first conductive portion is disposed on the upper surface of the base portion,
When the current terminal comes into contact with the first conductive portion, the first conductive portion is elastically deformed, and a contact area with the current terminal is expanded.

Moreover, the automatic connection device according to the present invention is
Including the contact,
A watt-hour meter accommodating portion capable of accommodating the watt-hour meter;
A contact base plate portion on which the contact is erected, and located at the bottom of the watt-hour storage unit,
Including two or more shafts that are slidable in a vertical direction and a watt-hour presser plate that abuts a predetermined portion of the watt-hour meter during a test, the watt-hour meter being directed from above to the contactor base plate portion Watt-hour meter pushing means for pushing,
And a shaft moving means for sliding the shaft of the watt-hour meter pushing means in a vertical direction.

Since the present invention includes the first conductive portion on the upper surface of the base portion, the first conductive portion elastically deforms when the first conductive portion contacts the current terminal of the watt hour meter. Even if the connection position of the automatic wire connection device is not constant for each test, the two can always be brought into contact with each other in a wide plane. Therefore, when supplying electric power from the test apparatus to the watt hour meter, it is possible to reduce the electrical resistance and the heat generation amount at the contact portion.

Prior to detailed description of the embodiment according to the present invention, an outline of the watt-hour meter 1000 set in the automatic connection device 10 will be described with reference to FIG. In FIG. 8, a watt hour meter having a rated current of 120A will be described as an example. However, the type of the watt hour meter is not limited as long as the watt hour meter can insert the contact 100 according to the present invention.

8A is a top view of the watt hour meter 1000, FIG. 8B is a front view of the watt hour meter 1000, FIG. 8C is a bottom view of the watt hour meter 1000, and FIG. (D) is a side view of the watt-hour meter 1000. The watt-hour meter 1000 is a box-type device including a main body portion 1100 including a current terminal 1110, a voltage terminal 1120, and the like, and a cover portion 1200 covering the main body portion 1100. The cover portion 1200 of the watt-hour meter 1000 has a contact covering portion 1210 that protrudes horizontally from one side surface, and a current terminal 1110 is accommodated in the contact covering portion 1210. The current terminal 1110 has a contactor connection hole 1111 into which a protrusion 130 of the contactor 100 shown in FIG.

In this watt-hour meter 1000, four current terminals 1110 shown in FIG. 8 (particularly FIG. 8C) are arranged in the order of 1S terminal, 3S terminal, 3L terminal, and 1L terminal from the left. Similarly, the voltage terminal 1120 is arranged from the left in the order of the P1 terminal, the P2 terminal, and the P3 terminal.

Further, as shown in FIG. 8A, on the upper surface of the watt-hour meter 1000, a pulsed light beam (for example, infrared rays) having a predetermined cycle is emitted according to the amount of power supplied to the watt-hour meter 1000 during the test. A light emitting unit 1130 is provided.

Here, the dotted line in FIG. 8D indicates the position of the watt-hour meter 1000 inside the cover portion 1200. That is, when the main body 1100 of the watt hour meter 1000 does not have the cover portion 1200 attached, the contact position between the watt hour meter pressing plate 320 of the watt hour meter pushing means 300 and the watt hour meter 1000 is the cover portion 1200. It becomes lower than the case of wearing.

As shown in FIGS. 8A and 8B, when the watt hour meter 1000 is installed in the contactor connection hole 1111 of the current terminal 1110 in a factory, a house, or the like, the electric wire is held at the current terminal 1110. Bolt 1112 may be inserted. In this case, since the bolt 1112 has already been inserted into the contactor connection hole 1111 during the test, the protrusion 130 of the contactor 100 shown in FIG. 1 cannot be inserted. Therefore, in this case, when connecting the contact 100 and the current terminal 1110, the protrusion 130 is removed from the contact 100, and the watt-hour meter 1000 and the contact 100 are connected.

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, referring to FIG. 1, a contact 100 incorporated in an automatic wire connection device according to the present invention will be described (a conductor or the like is interposed between the contact 100 and a power source side of a test device (not shown)). Thus, the automatic connection device and the test device are connected.) 1A is a perspective view of the contact 100, FIG. 1B is a top view of the contact 100, and FIG. 1C is a front view of the contact 100. The contact 100 includes a base 110, a first conductive part 120, a protrusion 130, a second conductive part 140, and the like.

The base 110 is a conductive member, and the shape is not particularly limited. However, in FIG. 1, the base 110 is in the shape of a long bar, and a column having a diameter wider than that of the shaft is formed on the top. When the watt hour meter 1000 is tested, a current flows from the test apparatus to the watt hour meter 1000 through the base 110. Further, the base 110 is inserted into an insertion hole 211 provided in the contactor base plate part 210 of the automatic connection device 10 shown in FIG. 3, and the engaging part 111 for fixing the base 110 to the contactor base plate part 210. It is preferable to have. The engaging means of the engaging portion 111 is not particularly limited, but in the contact 100 of FIG. 1, a screw groove is formed in the engaging portion 111, and on the other hand, the engaging hole 111 is also engaged. A groove corresponding to the screw groove of the part 111 is formed, and the engaging part 111 is screwed into the insertion hole 211 so that the base part 110 is attached and fixed to the contactor base plate part 210. The upper surface 112 of the base 110 is located at a position facing the current terminal 1110 during the test.

The first conductive portion 120 is a member that is in direct contact with the current terminal 1110 of the watt hour meter 1000 and is disposed on the upper surface 112 of the base portion 110. In the present embodiment, a recess 113 is formed on the base upper surface 112, and the first conductive portion 120 is embedded in the recess 113. The first conductive portion 120 is composed of a coil spring (elastic body) that is elastically deformed when pressed, and the watt hour meter 1000 is set in the automatic connection device 10 during the test, and the current terminal 1110 is When abutting against the conductive portion 120, the contact portion is deformed so that the contact area with the current terminal is expanded. It is desirable that the current terminal 1110 and the upper surface 112 are parallel to each other in that the contact area is kept wide. However, it is difficult to set the watt-hour meter 1000 in the automatic connection device 10 with the current terminal 1110 and the upper surface 112 always in such a state for each test. In this case, since either one is slightly inclined, the current terminal 1110 and the upper surface 112 do not contact in a planar shape as described above, and the contact area becomes small. Therefore, the first conductive part 120 is provided on the upper surface 112. Thereby, even if any one of the current terminal 1110 and the upper surface 112 is inclined, the contact portion between the current terminal 1110 and the first conductive portion 120 is expanded by collapsing the contact portion of the first conductive portion 120, It is possible to pass a current through the watt-hour meter 1000 while reducing the electrical resistance and the amount of heat generated at the contact portion.

The protrusion 130 is a conductive cylindrical member whose diameter is smaller than the inner diameter of the current terminal 1110, and is detachably attached to the approximate center of the upper surface 112 of the base 110. The protrusion 130 is mainly used when the electric watt-hour meter 1000 has a bolt 1112 fitted in the contactor connection hole 1111 of the watt-hour meter 1000 shown in FIG. This is used to further increase the contact area between the current terminal 1110 and the contact 100 and prevent an excessive temperature rise at the location due to electrical resistance (an electron in a state where the bolt 1112 is not fitted in the contact connecting hole 1111). Of course, the protrusion 130 can be used even when a current is supplied to the electric energy meter 1000.)

When it is determined that the temperature of the contact point between the current terminal 1110 and the contact 100 is excessively increased, the bolt 1112 is removed from the contact connecting hole 1111 and the protrusion 130 is attached to the base 110 to form a hole. Into the contact connection hole 1111. On the other hand, when there is no excessive temperature rise at the contact location, the bolt 1112 is tested while being inserted into the contactor connection hole 1111. In this case, the protrusion 130 is not attached to the base 110. The means for attaching the protrusion 130 to the base 110 is arbitrary, but in this embodiment, the male screw 131 protruding from the protrusion 130 is substantially the upper surface 112 as shown in FIG. The protrusion 130 is attached to the base 110 by screwing into a female screw 114 formed inside the base 110 from the center.

The first conductive portion 120 is preferably disposed around the protrusion 130 as shown in FIG. With this arrangement, when the watt-hour meter 1000 is set in the automatic wiring device 10, if the contactor connection hole 1111 of the current terminal 1110 is covered with the protrusion 130, the current terminal 1110 and the first conductive portion 120 can be brought into contact with each other at a position where the mutual contact area can be kept wide. Therefore, alignment of the watt-hour meter 1000 during the test can be accurately performed with a simple configuration.

In addition, when the dimension of the diameter of the protrusion 130 is substantially the same as the inner diameter of the contactor connection hole 1111, the protrusion 130 and the inner wall of the contactor connection hole 1111 of the current terminal 1110 are in direct contact with each other. The electronic watt-hour meter 1000 and the automatic connection device 10 must always be set to be constant without any slight deviation, which makes it difficult to align the electronic watt-hour meter 1000. Therefore, in order to provide a so-called “play” when the protrusion 130 is inserted into the contactor connection hole 1111, the diameter of the protrusion 130 is made smaller than the inner diameter of the contactor connection hole 1111 (for example, the diameter of the protrusion 130 is 7 mm). The inner diameter of the contact connecting hole 1111 is 8 mm), and it is preferable to give a slight difference between the two dimensions. Further, in order to fill a dimensional difference between the diameter of the protruding portion 130 and the inner diameter of the contactor connection hole 1111, it is preferable to provide the second conductive portion 140 on the side surface of the protruding portion 130. It is preferable that the second conductive portion is an elastic body configured to be crushed when it comes into contact with the inner wall of the contactor connection hole 1111 and to expand a contact area. Thereby, it is possible to further reduce the contact resistance and the heat generation amount between the watt-hour meter 1000 and the contact 100 (automatic connection device 10) during the test.

Next, the automatic connection device 10 according to the first embodiment of the present invention will be described with reference to FIGS. 2 to 5. 2 is a front view of the automatic connection device 10 as viewed from the front, FIG. 3 is a view taken along the line AA of the automatic connection device 10 of FIG. 2, and FIG. 4 is a perspective view of the side of the automatic connection device 10. FIG. 5 is a diagram showing a process until the watt-hour meter 1000 is housed in the watt-hour meter housing section 200 of the automatic connection device 10 during the test.

The automatic wire connection device 10 includes a contact 100 (described in detail above), a watt hour meter accommodating portion 200, a watt hour meter pushing means 300, a shaft moving means 400, a setting height adjusting means 500 of the watt hour meter 1000, and the like. It is configured.

As shown in FIG. 2 and FIG. 3, the watt-hour storage unit 200 is a part that houses the watt-hour meter 1000 when testing the watt-hour meter 1000 (when connecting to the contact 100). Specifically, the watt-hour storage unit 200 is open at the top, a contact base plate unit 210 on which the contact 100 is erected is disposed at the bottom, and a storage unit partition plate 220 at each side. Is provided, and at least the bottom surface of the watt-hour meter 1000 and the contactor base plate portion 210 face each other, and a space that can accommodate the watt-hour meter 1000 is secured. In addition, as shown in FIG. 4, installation height adjusting means 500 for adjusting the installation height of the watt hour meter 1000 is disposed inside the watt hour meter accommodating portion 200. Details of the installation height adjusting means 500 will be described later.

The watt hour meter pushing means 300 is a means for further pushing the watt hour meter 1000 accommodated in the watt hour meter accommodating portion 200 toward the contact base plate portion 210 during the test. The watt-hour meter pushing means 300 includes at least two shafts 310 that are moved up and down by a shaft moving means 400, which will be described later, and a contact cover portion 1210 of the watt-hour meter 1000 (a state where the cover portion 1200 of the watt-hour meter 1000 is removed). In this case, the power meter holding plate 320 is in contact with the upper part of the current terminal 1110). The watt-hour presser plate 320 may be configured to span the upper ends of the shafts 310. However, in the present embodiment, the position of the watt-hour meter presser plate 320 approaches the watt-hour meter receiving unit 200 or It is preferable to connect via a presser plate position control unit 330 that controls the release.

The configuration of the presser plate position control unit 330 will be described with reference to FIGS. 2, 3, and 5. As shown in FIG. 2, the presser plate position control unit 330 includes a drawing head 331 attached to the upper end of the shaft 310, a link 332, and a joint 333 that connects the drawing head 331 and the link 332. The watt-hour meter pressing plate 320 is stretched over the upper end of the link 332.

Further, as shown in FIGS. 3 and 5, the presser plate position control unit 330 is arranged before and after the shaft 310, the retracting head 331, and the link 332 (in the case of FIG. 3, the upper and lower sides of the link 332 and the like, in the case of FIG. The link guide A334 and the link guide B335 that support the link 332 that moves in accordance with the vertical movement of the shaft 310 may be provided on the right and left). In the present embodiment, the link guide A 334 and the link guide B 335 are fastened to the side of the contactor base plate portion 210.

Further, as shown in FIG. 3 and FIG. 5, the presser plate position control unit 330 includes a post A 336 provided on the link guide A 334 and a tension spring 338 attached to both ends of the post B 337 provided on the link 332. Also good. As shown in FIG. 5A, the tension spring 338 acts to pull the link 332 by its spring force and tilt it obliquely with respect to the shaft 310.

The operation of the watt-hour meter pushing means 300 will be described with reference to FIG. As shown in FIG. 5A, when the watt-hour meter 1000 is housed in the watt-hour meter housing portion 200, the link 332 is farther from the other end 332 </ b> B at one end 332 </ b> A of the link 332 due to the spring force of the tension spring 338. It is arranged in an inclined state so as to be in position. Thereafter, as the shaft 310 is moved downward by the shaft moving means 400 described later, the link 332 is gradually sandwiched between the link guide A334 and the link guide B335 from the other end 332B. Accordingly, as shown in FIGS. 5B and 5C, the link 332 rises perpendicular to the contactor base plate portion 210 against the spring force of the tension spring 338.

Further, when the shaft 310 moves further downward, the watt-hour pressure plate 320 spanned over the link 332 comes into contact with the contactor covering portion 1210 of the watt-hour meter 1000 as shown in FIG. As shown in FIG. 5F, the watt-hour meter 1000 is pushed downward (contactor base plate portion 210 side).

In addition, when the watt-hour meter 1000 in which the cover part 1200 is not attached is accommodated, the current terminal 1110 is set in an exposed state. In this case, as shown in FIG. 8D, the contact position between the watt-hour meter 1000 and the watt-hour meter holding plate 320 is lowered by the absence of the cover portion 1200. Therefore, when the state of the watt-hour pushing means 300 is as shown in FIG. 5C, a large gap is formed between the watt-hour meter holding plate 320 and the upper part of the current terminal 1110, and a distance can be created until they come into contact. End up. Therefore, even if the watt-hour meter pushing means 300 is in the state shown in FIG. In order to solve this problem, the watt-hour pressure plate 320 spanned on the upper part of the link 332 can be attached with a watt-hour pressure plate thickness adjusting portion having a predetermined thickness at the lower part, or the electric power having different thicknesses. It is preferable to prepare the metering pressure plate 320 and use it by exchanging with and without the cover portion 1200. Thereby, the watt-hour meter 1000 can be firmly pushed into the watt-hour meter accommodating portion 200 regardless of whether or not the cover portion 1200 is attached.

The shaft moving unit 400 slides the shaft 310 of the watt-hour pushing unit 300 described above in the vertical direction. As shown in FIGS. 2 and 4, the shaft moving means 400 in the automatic connection device 10 according to the present embodiment is disposed below the substrate 600 and holds the shafts 310 at both left and right ends as shown in FIG. 2. The rack gear head 410 and a predetermined position of one surface 421A shown in FIG. 4 are fixed in contact with the rack gear head 410, and the rack gear 421 having a rack on the other surface 421B and the position facing the other surface 421B of the rack gear head 421. A rack and pinion mechanism 420 having a gear 422 that meshes with the rack gear 421, a lever 430 that is long in the vertical direction (parallel to the contact 100) and has a lever side gear 431 at the lower end, and a gear 422 at one end. The rack and pinion mechanism 420 is engaged with the other end and the lever side gear 431. A configuration including a gear shaft 440 that connects the lever 430.

The operation of the shaft moving means 400 will be described with reference to FIGS. First, when the lever 430 is tilted in a predetermined direction (the front side or the back side of the drawing) by a tester's manual operation, the lever side gear 431 rotates and the rotational force is transmitted to the rack and pinion mechanism 420 via the gear shaft 440. The gear 422 is transmitted. As a result, the gear 422 rotates, and the rack gear 421 that meshes with the gear 422 moves downward as shown in FIG. 4B. Accordingly, the rack gear head 410 to which the rack gear 421 is attached moves downward, and the shaft 310 held by the rack gear head 410 shown in FIG. 2 also moves downward. When the shaft 310 is moved upward in the drawing, the lever 430 is tilted in the opposite direction (for example, when the shaft 310 is moved downward, if the lever 430 is tilted forward, the shaft When moving 310 upward, the lever 430 is tilted back.)

Thus, in the automatic wire connection device 10 according to the present invention (the same applies to the automatic wire connection device 20 described below), the electronic watt-hour meter 1000 comes into contact with the shaft moving means 400 acting on the watt-hour pushing means 300. It is the structure pushed toward the child base plate part 210. Therefore, if the watt-hour pushing means 300 described above includes a presser plate position control unit 330, for example, an electronic watt-hour meter is placed on the watt-hour stand protruding outside the device, Unlike the type that pulls into the apparatus, the electronic watt-hour meter 1000 can be set simply by rotating the link 332 and lowering the watt-hour presser plate 320. Therefore, it becomes possible to make the whole apparatus very compact.

The installation height adjusting unit 500 is a unit for adjusting the installation height of the watt-hour meter 1000 that is housed in the watt-hour housing unit 200. Specifically, as shown in FIGS. 4A and 4B, the installation height adjusting means 500 includes a placement plate 510 on which the watt-hour meter 1000 is placed, a placement plate 510 and a shaft moving means 400. The connecting shaft 520 connecting the rack gear head 410 is included. Immediately after the watt-hour meter 1000 is housed in the watt-hour meter housing section 200, the placement plate 510 is stopped at a position away from the contactor base plate 210 as shown in FIG. When the watt hour meter 1000 is pushed into the contactor base plate 210 side by the watthour meter pushing means 300, the mounting plate 510 and the upper surface of the contactor base plate 210 together with the watthour meter 1000 as shown in FIG. Go down until you touch. As a result, the current terminal 1110 of the watt-hour meter 1000 is engaged with the protrusion 130 of the contact 100.

Next, in the above automatic connection device 10, the test can be performed by a method other than visually checking the power amount display meter of the watt hour meter 1000 using pulsed light (for example, infrared rays) emitted from the watt hour meter 1000. An automatic connection device capable of measuring the amount of power supplied to the watt-hour meter 1000 will be described with reference to FIG.

FIG. 6 is a view of the automatic connection device 10 as viewed from above (however, in FIG. 6, the watt-hour meter 1000 is not housed in the watt-hour meter housing portion 200). Reference numeral 700 in FIG. 6 denotes a light receiving arm that receives light from the light emitting unit 1130 of the watt-hour meter 1000 shown in FIG.

The light receiving arm 700 includes a light receiving element 710 at one end, and is configured to rotate and move the upper portion of the watt-hour meter 1000 by an air actuator or the like as indicated by an arrow in FIG. It has become. Thereby, when receiving light from the light emitting unit 1130, the light receiving arm 700 is rotated, and accordingly, the light receiving element 710 is moved directly above the light emitting unit 1130. When the watt-hour meter 1000 is housed in the watt-hour meter housing section 200, the light emitting section 1130 is positioned directly below the moved light receiving element 710, which is represented by a chain line in FIG.

The light receiving arm 700 is wired to a power amount measuring means (not shown) including a receiving unit that receives received light data and a calculation unit that measures the amount of power supplied to the watt hour meter 1000 from the received data. Alternatively, they are connected via a wireless communication line. This makes it possible to measure the amount of power supplied to the watt-hour meter 1000.

Although the light receiving arm 700 is not particularly limited, in the present embodiment, the light receiving arm 700 is moved up and down by predetermined lifting means such as an air cylinder (in FIG. 6, from the front of the drawing). It is attached to the light receiving arm elevating part 730 that moves up and down (backward or nearer from the back). At that time, the shaft portion 720 of the light receiving arm 700 is pivotally secured to the light receiving arm lifting / lowering portion 730. Further, in FIG. 6, the light receiving arm lifting / lowering unit 730 is disposed outside the watt hour meter accommodating unit 200 and in the vicinity of the light emitting unit 1130 of the watt hour meter 1000 accommodated in the watt hour meter accommodating unit 200. Yes.

Next, a second embodiment of the present invention will be described with reference to FIG. In addition, about the part same as the automatic connection apparatus 10 which concerns on said 1st embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

FIG. 7 is a view of the automatic connection device 20 according to the second embodiment as viewed from the same position as the automatic connection device 10 in FIG. 2. A different part from the first embodiment is a shaft moving means 800. Specifically, the shaft moving means 800 is connected to an electromagnetic valve (not shown), a cylinder head 810 that holds each of the shafts 310 at both ends, and the electromagnetic valve. It includes an air cylinder 820 that moves the portion 830 up and down, and the piston portion 830 and the cylinder head 810 are connected. However, the air supply control means to the air cylinder 820 is not limited to the electromagnetic valve, and other means may be used.

Since the shaft moving means 800 is configured as described above, the piston portion 830 and the cylinder head 810 can be raised or lowered by operating the air cylinder 820 by switching the electromagnetic valve. By this shaft moving means 800, the shaft 310 of the watt-hour pushing means 300 held by the cylinder head 810 is slid. Further, the mounting plate 510 of the installation height adjusting means 500 is also slid through the connection shaft 520. Since other operations are the same as those in the first embodiment, description thereof is omitted.

The figure which shows the outline of the contactor which concerns on one Embodiment of this invention. 1 is a front view of an automatic connection device 10 according to an embodiment of the present invention. The arrow view of the AA line of the automatic connection apparatus 10 of FIG. 1 is a perspective view of a side surface of an automatic connection device 10 according to an embodiment of the present invention. The figure which shows the process until the watt-hour meter 1000 is accommodated in the watt-hour meter accommodating part 200 of the automatic connection apparatus 10 at the time of a test. The figure which looked at the automatic connection apparatus 10 provided with the light reception arm 700 from the top. The figure which shows the automatic connection apparatus 20 which concerns on another embodiment of this invention. The figure which shows the outline of the watt-hour meter 1000.

DESCRIPTION OF SYMBOLS 10 Automatic connection apparatus 20 Automatic connection apparatus 100 Contactor 200 Electricity meter accommodating part 210 Contactor baseplate part 300 Electricity meter pushing means 310 Shaft 320 Electricity meter presser plate 330 Presser plate position control part 400 Shaft moving means 500 Installation height Adjustment means 600 Substrate 700 Light receiving arm 800 Shaft moving means 1000 Electric energy meter 1100 Main body part 1110 Current terminal 1200 Cover part

Claims (5)

A contactor for electrically connecting a watt-hour meter including a current terminal and an automatic connection device,
A conductive base that is fixedly attached to a predetermined portion of the automatic connection device; and
A first conductive part that contacts the current terminal and elastically deforms when pressed,
The first conductive portion is disposed on the upper surface of the base portion,
When the current terminal comes into contact with the first conductive portion, the first conductive portion is elastically deformed, and a contact area with the current terminal is expanded. A protrusion protruding along the axial direction of the base is detachably attached to the inside of the first conductive part at the center of the upper surface of the base,
The second conductive portion configured of an elastic body that contacts an inner wall of a contactor connection hole provided in the current terminal is disposed on a side surface of the protrusion. Contactor. An automatic connection device comprising the contact according to claim 1 or 2,
A watt-hour meter accommodating portion capable of accommodating the watt-hour meter;
A contact base plate portion on which the contact is erected, and located at the bottom of the watt-hour storage unit,
Including two or more shafts that are slidable in a vertical direction and a watt-hour presser plate that abuts a predetermined portion of the watt-hour meter during a test, the watt-hour meter being directed from above to the contactor base plate Watt-hour meter pushing means for pushing,
An automatic connection device comprising: a shaft moving means for sliding the shaft of the watt-hour meter pushing means in a vertical direction. The watt-hour meter pushing means further includes a pressure plate position control unit that controls the position of the watt-hour meter pressure plate so as to be close to or away from the watt-hour meter housing portion, and The automatic connection device according to claim 3, wherein a shaft and the watt-hour meter pressing plate are connected. The shaft moving means includes an electromagnetic valve, an air cylinder, a piston portion, and a cylinder head, and slidably moves the piston portion and the cylinder head held by the piston portion by switching of the electromagnetic valve. The automatic connection device according to claim 3 or 4, wherein the shaft of the watt-hour meter pushing means held by the cylinder head is slid.

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