JP2017173198A - Power meter wire connection machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power meter wire connection machine capable of preventing an external terminal from being damaged during testing time and easy for component replacement in a periodic maintenance operation.SOLUTION: A power meter wire connection machine includes: a plurality of wire connection mechanism; a base having a mount part for mounting a power meter having a plurality of plate-like external terminals mounted on the same straight line; a slide mechanism capable of adjusting intervals of the plurality of wire connection mechanisms; and a guide member attached to the slide mechanism and abutting against a meter fixing part of the power meter. The power meter wire connection machine further includes: each of the wire connection members having a current-carrying member, a pressing member in which a portion coming into contact at least with an external terminal of the power meter is configured of an insulation material; and a pressing device having a first position for releasing pressing toward the current-carrying member of the pressing member and a second position for pressing the pressing member toward the current-carrying member.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a wire connection device for connecting a plurality of types of watt-hour meters having different terminal arrangements to a test apparatus.

Prior to shipment of the watt hour meter, a test using a test device is performed, and a connector is used to connect the power supply unit of the test device and the external terminal of the watt hour meter.
Conventional mechanical watt-hour meters and electronic watt-hour meters have a shape in which a terminal block for connecting with an electric wire is integrated with a watt-hour meter main body. As shown in FIG. 12, an external terminal 52, a test terminal 53, and a communication connector 54 are provided in a terminal block of this watt hour meter (hereinafter also referred to as “terminal block integrated watt hour meter”).

  As a connector for performing verification of this terminal block integrated watt-hour meter, for example, the terminal of the connector is pressed against the test terminal attached to the terminal block from the front, and the external connected to the bottom of the terminal block A method is known in which a split terminal is inserted into a terminal, the split terminal is opened, brought into contact with an external terminal of a watt hour meter, and connected (Patent Document 1). This connector is capable of supporting a plurality of types of watt hour meters by attaching a positioning block corresponding to the watt hour meter to the fixed frame and positioning the slide mechanism in the left-right direction.

  Incidentally, in recent years, watt-hour meters defined as smart meters are becoming popular. In the initial type smart meter, as shown in FIG. 11, the terminal block is separated during the test, and the four current terminals 11 a to 11 d and the three voltage terminals 12 a to 12 c are provided from the bottom surface of the watthour meter main body 10. It is arranged in a protruding form. A smart meter having this terminal arrangement (hereinafter sometimes referred to as “imaginary load test type smart meter”) connects a voltage source and a current source separately, supplies a test voltage from the voltage source, and tests from the current source. It is possible to perform a imaginary load test that supplies current.

  Since the terminal shape of the terminal block integrated watt-hour meter described above is different, it cannot be used in the smart meter shown in FIG. Therefore, the applicant has proposed a watt-hour automatic inspection device equipped with an automatic connection unit equipped with multiple types of connection devices in order to connect to virtual load test type smart meters with different terminal arrangements depending on the rating (Patent Document) 2).

However, recently, a smart meter of a type in which a current terminal and a voltage terminal are arranged on the same straight line (hereinafter sometimes referred to as “actual load test type smart meter”) has been sold.
FIG. 1 is a configuration example of an actual load test type smart meter.
A smart meter 20 shown in FIG. 1A is a single-phase two-wire watt-hour meter with a rating of 30A, and includes three external terminals 21a to 21c and two instrument fixing portions 22a and 22b. Yes.
A smart meter 30 shown in FIG. 1B is a single-phase three-wire or three-phase three-wire watt-hour meter with a rating of 60A, and includes five external terminals 31a to 31e and two meter fixing portions 32a. , 32b.
A smart meter 40 shown in FIG. 1C is a single-phase three-wire type or three-phase three-wire type watt-hour meter with a rating of 120 A, and includes five external terminals 41 a to 41 e and two meter fixing portions 42 a. , 42b.

  As a wire connection device corresponding to an actual load test type smart meter, for example, an electrical connection terminal having a plurality of contact portions arranged at different positions is provided, and a contact portion that contacts an external terminal according to the type of watt-hour meter. An automatic connection device for switching has been proposed (Patent Document 3).

JP 2008-185402 A JP 2014-59153 A JP-A-2015-75476

  Conventionally, there has been a demand for a connector that can handle multiple types of watt-hour meters with different number and arrangement of external terminals due to differences in phase wire type, rated voltage, and rated current. The same applies to actual load test type smart meters. There are needs.

  Although it is conceivable to apply the connection device described in Patent Document 2 proposed by the applicant to an actual load test type smart meter, since this type of connection device is composed of a plurality of types of connection devices, the number of parts is reduced. There was a problem of an increase in cost due to an increase in the number of devices, a problem of installation space due to an increase in the size of the apparatus, a problem of difficulty in maintenance, and the like.

Moreover, at the time of the test of the watt-hour meter containing a smart meter, there exists a possibility that it may be damaged by pressing a metal member to an external terminal, and it may be misunderstood as a used article. There is a need for a watt-hour meter connector that can prevent external terminals from being damaged during testing.
Furthermore, the part which contacts the external terminal of the watt-hour meter including the smart meter requires regular maintenance work. There is a need for a watt-hour connector that allows easy replacement of parts.

  Then, an object of this invention is to provide the watt-hour meter connector which can solve the said subject.

[1] A plurality of connection mechanisms, a base having a mounting portion for mounting a watt-hour meter including a plurality of plate-like external terminals arranged on the same straight line, and the plurality of connection mechanisms A slide mechanism capable of adjusting the interval, and a guide member attached to the slide mechanism and abutting against a meter fixing portion of the watt hour meter, wherein each of the connection mechanisms includes an energizing member and at least the watt hour meter. A pressing member having a portion in contact with the external terminal made of an insulating material, a first position for releasing pressing of the pressing member against the energizing member, and a pressing device having a second position for pressing the pressing member against the energizing member. A watt-hour cable connector characterized by
[2] The electric energy according to [1], wherein the plurality of connection mechanisms are arranged in a radial manner so that the interval between the upper portions of the energizing members is narrow and the interval between the lower portions of the energizing members is increased. Meter connection.
[3] The plurality of connection mechanisms include four connection mechanisms, and one of the four connection mechanisms includes a second energization member fixed to the pressing member. ] Or the electricity meter connector according to [2].
[4] A metal plate in which the connection mechanism provided with the second energization member is a connection mechanism located third or fourth from the left, and the second energization member is elastically deformed when contacting the external terminal. The watt-hour meter connector according to [3], comprising:
[5] The watt-hour connector according to any one of [1] to [4], wherein the energizing member has a widest surface in surface contact with the widest surface of the external terminal.
[6] The device according to any one of [1] to [5], wherein the mounting portion is tiltable with respect to the base and biased in a direction away from the base. Electricity meter connector.

[7] The watt-hour connector according to any one of [1] to [6], wherein the pressing device presses the pressing member against the energizing member with a force of 50 N or more.
[8] The watt-hour connector according to any one of [1] to [7], wherein the slide mechanism includes a guide shaft and a linear bush inserted through the guide shaft.
[9] A positioning mechanism for positioning the plurality of connection mechanisms in a selected one of the arrangements of external terminals of a plurality of types of watt-hour meters is provided [1] to [8] The electricity meter connector according to any one of the above.
[10] The electric power according to [9], wherein the positioning mechanism includes an input device that inputs a type of the watt hour meter, and performs automatic positioning according to the type of the input watt hour meter. Quantity meter connector.
[11] The mounting unit is configured so that a plurality of watt-hour meters can be mounted simultaneously,
The plurality of connection mechanisms include a number of connection mechanisms corresponding to the plurality of watt-hour meters, and the positioning mechanism simultaneously positions the plurality of connection mechanisms [9] or [9] 10] The electricity meter connector according to [10].

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the watt-hour meter connector which can respond to the multiple types of watt-hour meter from which the number and arrangement | positioning of an external terminal differ.
Further, it is possible to prevent the external terminals from being damaged during the test.
Furthermore, since the connection mechanism, which is a part that requires periodic maintenance work, is not integrally configured, it is possible to reduce the load of maintenance work.

It is a front view of an actual load test type smart meter, (a) is a single-phase two-wire rating 30A, (b) is a single-phase three-wire type or three-phase three-wire rating 60A, and (c) is a single-phase three-wire rating. It is a front view of a formula or three-phase three-wire rating 120A. It is a front view of the watt-hour connector according to the embodiment. It is a perspective view from the front side of the watt-hour connector according to the embodiment. It is a perspective view from the side of a watt-hour connector according to an embodiment. (A) is a perspective view of the connection mechanism, (b) is a side view of the connection mechanism with the pressing member in the first position, and (c) is a side view of the connection mechanism with the pressing member in the second position. It is a side view of a connection mechanism provided with a 2nd electricity supply member. (A) is a front view which shows arrangement | positioning of the connection mechanism in case the pitch between terminals is small, (b) is a front view which shows arrangement | positioning in case the pitch between terminals is large. It is a front view which shows the connection state of the smart meter of rating 30A. It is a front view which shows the connection state of the smart meter of rating 60A. It is a front view which shows the connection state of the smart meter of rating 120A. It is (a) front view and (b) bottom view of a virtual load test type smart meter. It is (a) front view and (b) bottom view of a terminal block integrated watt-hour meter.

Hereinafter, the watt-hour meter connector according to the embodiment of the present invention will be described.
The electricity meter connector 100 according to the embodiment is a connector for connecting an energy meter defined as a smart meter. The electricity meter connector 100 according to the embodiment is a smart meter in which a plurality of plate-like external terminals arranged so that the maximum area faces the front side and the back side are arranged in the width direction. Typically, the actual load test type smart meter illustrated in FIG. 1 is to be connected.

<Configuration>
2 is a front view of the watt-hour meter connector 100 according to the embodiment, FIG. 3 is a perspective view from the front side, and FIG. 4 is a perspective view from the side side.
The watt-hour cable connector 100 includes a base 101, a placement unit 102, a slide mechanism 110, a holding member 120, and a connection mechanism 130.

  The base 101 is a plate that is slightly larger than the watt-hour meter that supports each member, and various components such as the slide mechanism 110 are arranged thereon. As shown in FIGS. 2 and 4, two substantially rectangular openings 101A and 101B are provided in the lower half of the base 101, and pins 115a and 115b are provided from the opening 101A toward the back surface. However, the pin 115c protrudes from the opening 101B (see FIG. 4). The base 101 is fixed in an inclined state to a frame (not shown) so that the watt hour meter can be easily installed on the watt hour meter connector 100. The base 101 may be installed horizontally or vertically.

The base 101 includes a mounting portion 102 that is a flat portion for mounting the watt-hour meter. The mounting portion 102 may be configured as a raised portion that is a part of the base 101 (that is, the base 101 is substantially L-shaped when viewed from the side). It may be configured by attaching a member (for example, a conductive metal plate). In addition, the mounting part 102 can also be comprised by materials other than a metal, and you may provide the engaging member (hook etc.) for latching a watt-hour meter in a mounting part. The mounting portion 102 according to the embodiment is supported by the upper half of the base 101 in a tiltable manner by four elastic members 103a to 103d and a pair of support columns 104a and 104b provided in the vicinity of the four corners. The four elastic members 103a to 103d are, for example, metal springs, urge the mounting portion 102 in a direction away from the base 101, and guide the watt hour meter in cooperation with the guide members 121a and 121b. To do. In addition, by allowing the four elastic members 103a to 103d to expand and contract independently, the dimensional error of the watt hour meter and the inclination of the external terminal are absorbed, and the contact between the external terminal and the connection mechanism 130 is ensured. I have to.
The support pillars 104a and 104b are provided with a long groove for projecting the upper part of a projecting piece (machine key) (not shown), and the mounting portion 102 is supported by the upper part of the projecting piece.

The slide mechanism 110 is a mechanism for moving the connection mechanism 130 in parallel, and is provided in the lower half of the base 101. The slide mechanism 110 includes two guide shafts 111a and 111b extending in the horizontal direction, three sets of linear bushes (112a to 112c, 113a to 113c), support members 114a to 114d, and three pins 115a to 115c. , And is configured.
The two guide shafts 111 a and 111 b are rod-shaped members having the same length, and both ends thereof are fixed by support members 114 a to 114 d arranged on the base 101. The support members 114a to 114d are fixed to the base 101 with a fixing tool such as a screw.

  The linear bushes (112a to 112c, 113a to 113c) are members that make a holding member (120a, 120b, 120d), which will be described later, slide freely, and slide on the two guide shafts 111a, 111b in pairs. It is inserted as possible. More specifically, the linear bushings 112a and 113a are cross-linked by the connecting member 122a, the linear bushings 112b and 113b are cross-linked by the connecting member 122b, and the linear bushings 112c and 113c are cross-linked by the connecting member 122c. Yes. The linear bushes (112a to 112c, 113a to 113c) include a large number of balls for reducing the frictional force of the sliding surface and facilitating sliding along the guide shafts 111a and 111b.

  As shown in FIG. 4, pins 115 a to 115 c are provided on the back side of the three connecting members (122 a to 122 c) that bridge-connect three sets of linear bushes (112 a to 112 c, 113 a to 113 c). . A positioning mechanism (not shown) is connected to the pins 115a to 115c, and the linear bushing (112a to 112c, 113a to 113c) can be positioned by this positioning mechanism. This positioning mechanism may adopt a configuration in which the machine automatically performs positioning (for example, a ball screw and a stepping motor) when a type of watt hour meter is input from an input device, or a configuration in which a person manually performs positioning. (For example, a slider on which a slide position scale and a pin connector are mounted) may be employed.

  The holding members 120a to 120d are plate-shaped or rectangular parallelepiped insulating members on which the connection mechanisms 130a to 130d are arranged (see FIGS. 5 and 6). Out of the four holding members, the two holding members (120a, 120d) on the outside are connected to the guide members 121a, 121b. In the embodiment, the entire holding members 120a to 120d are made of resin (for example, engineering plastic). However, if the connection mechanisms 130a to 130d and the slide mechanism 110 can be insulated, the entire holding members 120a to 120d are used. It is not necessary to constitute the insulative material.

  Of the four holding members, three holding members (120a, 120b, 120d) are plate-like bodies that are slidable by linear bushes (112a to 112c, 113a to 113c), but are rectangular parallelepiped holding members 120c. Is fixed although two guide shafts 111a and 111b are inserted. The holding member 120c is set at a fixed position because this is used as a reference for positioning. In the embodiment, the connection mechanism 130c held by the holding member 120c and the specific terminal of the watt hour meter are aligned, and the remaining connection mechanisms (130a, 130b, 130d) are moved to align the remaining terminals. It is.

  The guide members 121a and 121b are columnar members provided on the upper portions of the holding members 120a and 120d, and have protrusions for guiding the instrument fixing portion of the watt-hour meter and positioning left and right. Since the distance between the guide members 121a and 121b can be adjusted by sliding the holding members 120a and 120d to the left and right, it is possible to deal with various types of watt-hour meters (smart meters). In the embodiment, the entire guide members 121a and 121b are made of resin (for example, engineering plastic). However, it is sufficient if at least a portion where the watt hour meter may contact is made of an insulating material. It is not necessary to configure all of 121a and 121b with an insulating material.

  The connection mechanisms 130a to 130d narrow the external terminals (21, 31, 41) of the watt hour meter, and electrically connect the test apparatus and the watt hour meter. The connection mechanisms 130a to 130d are configured to include current-carrying members 131a to 131d, pressing members 132a to 132d, and pressing devices 133a to 133d, and external terminals (21, 31, 41) by the current-carrying members 131a to 131d and the pressing members 132a to 132d. ).

  The energizing members 131a to 131d are plate-like members made of a metal material, and are in contact with the external terminals (21, 31, 41) of the watt hour meter on the widest surface. The current-carrying members 131a to 131d must be arranged in a narrow space while increasing the contact area with the external terminals, so that they are substantially the same width as the external terminals (same width, slightly narrower than the external terminals, or slightly For example, a width of 12 to 14 mm.

The current-carrying members 131a to 131d are preferably made of a low-resistance metal material in order to suppress overheating and a decrease in measurement accuracy when a large current is applied. For example, the current-carrying members 131a to 131d are made by plating a copper plate. Moreover, it is preferable to have sufficient thickness (for example, 5-15 mm) in order to suppress the deformation | transformation at the time of pinching.
It is preferable that the front end portions (upper end portions) of the energization members 131a to 131d have an arc shape or the like that does not have a corner portion.
The energizing members 131a to 131d are arranged so as to protrude upward from the upper ends of the holding members 120a to 120d, and electric wires 136a to 136d are connected to the lower end portions by bolts or the like (see FIG. 5). It is possible to easily replace the energizing member 131 by removing a bolt for fixing the electric wire 136 and removing a fixing tool such as a screw for fixing the energizing member 131 to the holding member 120 during maintenance work.

  The pressing members 132a to 132d are plate materials having a substantially triangular shape in a side view made of an insulating material, and are disposed so as to face the energizing members 131a to 131d. As shown in FIG. 5, the pressing members 132 a to 132 d have arc-shaped protrusions 1321 a to 1321 d that protrude from the current-carrying members 131 a to 131 d at the upper ends, and these protrusions 1321 a to 1321 d are used as watt hour meters. Press against the external terminal to narrow the external terminal. The widths of the pressing members 132a to 132d viewed from the front side are substantially the same width (slightly narrow) as the energizing members 131a to 131d.

In the embodiment, the entire pressing member 132 is made of resin (for example, engineering plastic). However, it is sufficient that at least the portion where the external terminal may come into contact is made of an insulating material, and the entire pressing member 132 is made. It is not necessary to constitute the insulative material. From the viewpoint of preventing the external member from being scratched by the pressing member 132, it is preferable that at least a portion with which the external terminal abuts (a portion corresponding to the protruding portion 1321 in the embodiment) is made of resin.
The corner of the pressing member 132 on the side of the energizing member 131 is supported by a pair of support members 134 provided on the holding member 120 so as to be swingable. The corner portion of the pressing member 132 that is located farthest from the energizing member 131 is connected to the distal end portion of the piston 1331 of the pressing device 133, and abuts on the external terminals (21, 31, 41) by the expansion and contraction of the piston 1331. Or separated.

The connection mechanism 130c includes a second energization member 135 arranged side by side on the right side of the energization member 131c. The second energizing member 135 is an L-shaped metal plate when viewed from the front, and is elastically deformed when pressed against the external terminal of the watt hour meter from the front side. As shown in FIG. 6, the second energizing member 135 is fixed to the side surface of the pressing member 132c. When the pressing device 133 takes the second position, the second energizing member 135 bends like a leaf spring and has a predetermined contact load. Contact the terminal. The second energizing member 135 is connected to the test apparatus by an electric wire (not shown), and energizes an external terminal (for example, 31d) on the right side of the external terminal (for example, 31c) with which the energizing member 131c abuts. Since the external terminal with which the second energizing member 135 abuts is a voltage terminal and no large current is applied, it is not necessary to ensure a sufficient contact area unlike other external terminals. Therefore, the second energization member 135 is brought into contact with the external terminal by pressing from the front side without narrowing the external terminal unlike other connection mechanisms.
Note that, unlike the embodiment, a second energization member may be provided in the connection mechanism 130d.

  The pressing device 133 includes a piston 1331 and a cylinder 1332, and is a first position for retracting the piston 1331 and separating the pressing member 132 from the external terminals (21, 31, 41) (see FIG. 5B). Then, the piston 1331 is advanced to take the second position (see FIG. 5C) where the pressing member 132 is brought into contact with the external terminals (21, 31, 41). The cylinder 1332 is constituted by an air cylinder, for example. In the embodiment, the cylinders 1332a to 1332d included in the connection mechanisms 130a to 130d have the same specifications and are configured to supply compressed air by branching into four from one air supply source. In order to ensure a sufficient contact area between the energization member 131 and the external terminal, the pressing member 132 needs to be pressed with a force of a certain level or more, for example, pressed with a force of several tens of N to several tens of N. By pressing with a force of a certain level or more, not only is the external terminal fitted to the current-carrying member 131, but the contact area is ensured by eliminating non-contact due to micro unevenness or the like. Here, the case where the contact area with the external terminal is insufficient means a case where overheating outside the test standard such as JIS occurs when a large current (for example, 30 A to 120 A) is passed.

  Each of the connection mechanisms 130a to 130d includes one pressing device 133a to 133d, and absorbs variations in the position and thickness of the external terminal as compared with a configuration in which the pressing members 132a to 132d are all pressed by one pressing device. Therefore, it is possible to secure a sufficient contact area for all the external terminals. Since the pressing members 132a to 132d and the pressing devices 133a to 133d are disposed so as to be exposed to the front side, work such as replacement is easy.

  The connection mechanisms 130a to 130d are arranged in a radial pattern with a narrow upper space and a wide lower space. This is because the connection between the external terminals of the watt-hour meter is only a few millimeters at the smallest place, and the wiring mechanisms 130a to 130d cannot be arranged in a narrow space unless they are arranged radially. As described above, in order to secure a contact area between the energizing member 131 and the external terminal, it is necessary to press the pressing member 132 with a force of a certain level or more, and there is a restriction on downsizing of the pressing device 133. Therefore, when taking the structure which makes the pressing member 132 and the press apparatus 133 correspond one-to-one, it is necessary to arrange | position the connection mechanisms 130a-130d radially.

<Connection operation>
The connection operation of the connection mechanisms 130a to 130d will be described.
Fig.7 (a) is a front view which shows arrangement | positioning of the connection mechanism 130a-130d in the case of connecting to the watt-hour meter with a narrow pitch between external terminals. First, a watt-hour meter is temporarily installed on the mounting portion 102 so that the current terminal and the voltage terminal are in contact with the current-carrying member 132c and the second current-carrying member 135, which are fixed, and is aligned. At this time, the connection mechanisms 130a to 130d are set to the first positions where the pressing members 132a to 132d are opened.
Subsequently, the connection mechanisms 130b and 130d are slid and positioned, and finally the connection mechanism 13a is slid and positioned. When the positioning of all the connection mechanisms 130 is completed, the watt-hour meter is installed on the placement unit 102. At this time, the external terminal of the watt-hour meter is located between the conductive member 131 and the pressing member 132 (see FIG. 5B).

Subsequently, the pressing devices 133a to 133d are driven all at once, and the pressing members 132a to 132d are set to the second position, whereby the external terminals are narrowed in cooperation with the energizing members 131a to 131d. By setting the pressing member 132c to the second position, the second energizing member 135 is also brought into contact with the external terminal (voltage terminal) (see FIG. 6).
Thus, the connection operation between the energization member 131 and the external terminal is completed. After the completion of the predetermined test, the connection is released by driving the pressing devices 133a to 133d to set the pressing members 132a to 132d to the first position (see FIG. 5B).

  FIG. 8 is a front view of the watt hour meter connector 100 connected to the actual load test type smart meter 20 having a single-phase two-wire rating of 30A. The mart meter 20 mounted on the mounting table 102 is in a state where the instrument fixing portions 22a and 22b are guided by the guide members 121a and 121b. The connection mechanism 130a clamps the external terminal 21a, the connection mechanism 130d clamps the external terminal 21c, and the second energization member 135 of the connection mechanism 130c is in contact with the external terminal 21b. The connection member 130c of the connection mechanism 130b and the connection mechanism 130c is not used.

  FIG. 9 is a front view of a watt-hour meter connector 100 connected to an actual load test type smart meter 30 having a single-phase three-wire type or a three-phase three-wire type rating 60A. The mart meter 30 mounted on the mounting table 102 is in a state where the instrument fixing portions 32a and 32b are guided by the guide members 121a and 121b. The connection mechanism 130a clamps the external terminal 31a, the connection mechanism 130b clamps the external terminal 31b, the connection mechanism 130c clamps the external terminal 31c, and brings the second energizing member 135 into contact with the external terminal 31d. 130d clamps the external terminal 31e. Compared to the case of the smart meter 20, the connection mechanism 130a is located on the left side.

  FIG. 10 is a front view of the watt-hour meter connector 100 connected to an actual load test type smart meter 40 having a single-phase three-wire type or a three-phase three-wire type rating 120A. The mart meter 40 mounted on the mounting table 102 is in a state where the instrument fixing portions 42a and 42b are guided by the guide members 121a and 121b. The connection mechanism 130a clamps the external terminal 41a, the connection mechanism 130b clamps the external terminal 41b, the connection mechanism 130c clamps the external terminal 41c, and brings the second energizing member 135 into contact with the external terminal 41d. 130d clamps the external terminal 41e. The connection mechanism 130a is at a close distance from the support column 104a, and the connection mechanism 130d is at a close distance from the support column 104b.

  A plurality of watt-hour meter connectors 100 according to the embodiment described above are arranged side by side and can simultaneously connect a plurality of watt-hour meters (smart meters) of the same type (for example, 2 to 40 units) at the same time. Configured as follows. When arranging a plurality of units side by side, it is preferable to connect the pins 115 of the corresponding connection mechanisms 130 so that the plurality of units can be positioned at the same time. For example, the connection mechanisms 130 a to 130 d of the first wattmeter connector 100, the connection mechanisms 130 a to 130 d of the second wattmeter connector 100, and the connection mechanisms 130 a to 130 d of the third wattmeter connector 100. It is disclosed that the connection mechanisms 130a to 130d of each watt-hour meter connector 100 are simultaneously positioned by connecting corresponding connection mechanisms with connection members.

  According to the watt-hour connector 100 of the embodiment described above, the pitch of the connection mechanism 130 can be made variable, so that the watt-hour meter (smart meter) with different ratings and inter-terminal pitches can be used. Can respond. In addition, since the pressing member 132 is made of resin and the energizing member 131 is in surface contact with the external terminal on the widest surface, there is no possibility of damaging the external terminal of the watt-hour meter (smart meter) during connection.

  As mentioned above, although preferable embodiment of this invention was described, the technical scope of this invention is not limited to description of the said embodiment. Various modifications / improvements can be added to the above-described embodiments, and forms to which such modifications or improvements are added are also included in the technical scope of the present invention.

10: Imaginary load test type smart meter 11a to 11d: Current terminals 12a to 12c: Voltage terminal 20: Actual load test type smart meter (single-phase two-wire rated 30A)
21a-21c: External terminals 22a, 22b: Instrument fixing part 30: Actual load test type smart meter (single-phase three-wire type or three-phase three-wire type rating 60A)
31a to 31e: External terminals 32a, 32b: Instrument fixing unit 40: Actual load test type smart meter (single-phase three-wire type or three-phase three-wire type rating 120A)
41a to 41e: external terminals 42a and 42b: instrument fixing unit 100: watt-hour meter connector 101: base 102: mounting units 103a to 103d: elastic members 104a and 104b: support pillars 110: slide mechanisms 111a and 111b: guides Shafts 112a to 112c: (Upper stage) Linear bushings 113a to 113c: (Lower stage) Linear bushings 114a to 114d: Support members 115a to 115c: Pins 120a to 120d: Holding members 121a, 121b: Guide members 122a to 122c: Connecting members 130a to 130a 130d: Connection mechanism 131a-131d: Current supply member 132a-132d: Press member 133a-133d: Press device 134: Support member 135: Second current supply member 136a-136d: Electric wire

Claims (11)

A plurality of connection mechanisms;
A base having a mounting portion for mounting a watt-hour meter including a plurality of plate-like external terminals arranged on the same straight line;
A slide mechanism capable of adjusting an interval between the plurality of connection mechanisms;
A guide member attached to the slide mechanism and abutting on a meter fixing portion of the watt-hour meter;
Each of the connection mechanisms includes a current-carrying member, a pressing member in which at least a portion in contact with the external terminal of the watt-hour meter is made of an insulating material, a first position for releasing the pressing of the pressing member to the current-carrying member, and pressing And a pressing device having a second position for pressing the member against the current-carrying member.   2. The watt-hour meter connector according to claim 1, wherein the plurality of connection mechanisms are arranged in a radial manner so that the interval on the upper side of the energization member is narrow and the interval on the lower side of the energization member is increased. .   The said several connection mechanism consists of four connection mechanisms, and one connection mechanism is equipped with the 2nd electricity supply member fixed to the said pressing member among the four connections. The watt-hour meter connector described in 1. The connection mechanism provided with the second energization member is a connection mechanism located third or fourth from the left,
The watt-hour connector according to claim 3, wherein the second energizing member includes a metal plate that is elastically deformed when abutting against the external terminal.   The watt-hour connector according to any one of claims 1 to 4, wherein the energizing member has a widest surface in surface contact with the widest surface of the external terminal.   The watt-hour meter connector according to any one of claims 1 to 5, wherein the placing portion is tiltable with respect to the base and is biased in a direction away from the base. .   The wattmeter connector according to any one of claims 1 to 6, wherein the pressing device presses the pressing member against the energizing member with a force of 50 N or more.   The watt-hour meter connection device according to any one of claims 1 to 7, wherein the slide mechanism includes a guide shaft and a linear bush inserted through the guide shaft.   9. The positioning device according to claim 1, further comprising: a positioning mechanism that positions the plurality of connection mechanisms in a selected one of the arrangements of the external terminals of the plurality of types of watt-hour meters. Electricity meter connector.   The watt-hour meter connection according to claim 9, wherein the positioning mechanism has an input device for inputting a type of watt-hour meter, and performs positioning automatically according to the type of watt-hour meter input. vessel. The mounting section is configured so that a plurality of watt-hour meters can be mounted simultaneously,
The plurality of connection mechanisms are composed of a number of connection mechanisms corresponding to the plurality of watt-hour meters,
The watt-hour connector according to claim 9 or 10, wherein the positioning mechanism simultaneously positions the plurality of connection mechanisms.