JP2019015624A - Watt-hour meter - Google Patents

Abstract

To provide a watt-hour meter with which it is possible to reduce a component count and cut down costs, and which allows an existing communication device to be attached to a measuring device by substitution.SOLUTION: A base 6A has a communication device attachment part 6b for attaching a first measuring device attachment part formed in an existing communication device, and has communication device attachment parts 6d1, 6d2, 6e1, 6e2 formed at positions that do not interfere with attachment of the existing communication device. A communication device 12A does not have the first measuring device attachment part and has measuring device attachment parts 121a, 121b, 122a, 122b that are attached to the communication device attachment parts 6d1, 6d2, 6e1, 6e2, as well as includes one housing that has formed therein a circuit unit attachment part 123 for attaching a circuit unit of the communication device.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a watt hour meter including a metering device and a communication device.

  The watt-hour meter includes a metering device and a communication device that is attached to the metering device and transmits the amount of power metered by the metering device to the outside.

  FIG. 15 is a perspective view of a conventional watt-hour meter. 15 (a) and 15 (b) show the external appearance of the watt-hour meter, FIG. 15 (c) shows a state where the cover 7 is removed and the communication device is attached to the base 6, and FIG. The state which removed the communication apparatus is shown.

  As shown in FIG. 16, the weighing device includes a substrate 1 (circuit unit) having a display unit 1 a for displaying electric energy and a communication device connecting connector 1 b, a conductor unit 3 having a current line mounting screw 2, and a conductor unit. 3 includes a sensor section 4 that detects a current flowing through the base 3, a case 5 that accommodates the sensor section 4, a base 6, and a cover 7. The cover 7 is provided with a cover mounting screw 8, and the base 6 is formed with a connector through hole 6a, a communication device mounting portion 6b, and a current line through hole 6c.

  As shown in FIG. 17, the communication device connects the board connection connector 10 b of the cable 10 to the cable connection connector 9 b of the board 9, and the LED light guide 11 that guides the light of the LED 9 a of the board 9 is provided in the upper case. 12 is installed in the LED light guide hole 12 a and the substrate 9 is housed in the upper case 12 and the lower case 13.

  The measuring device connecting connector 10a of the communication device is connected to the communication device connecting connector 1b of the substrate 1 through the connector through hole 6a of the base 6 of the measuring device, and the measuring device mounting portion 13a of the lower case 13 of the communication device is measured. The watt hour meter is manufactured by fitting the communication device mounting portion 6 b of the device base 6 and attaching the cover 7 to the base 6 with the cover mounting screw 8.

  As a conventional technique, there is known a watt-hour meter that can be installed in a narrow and limited space and can be applied to watt-hour meters of various sizes without changing the structure of an existing watt-hour meter. ing. (Patent Document 1)

Japanese Patent No. 5366654

  Thus, although the weighing device and the communication device are separated, the cost can be reduced by integrating them.

  However, current products with different types of communication, that is, current communication devices and weighing devices (corresponding to existing communication devices and weighing devices) will be used in the future, so integrated cost reduction products and current products are mixed. Probability is high.

  An object of the present invention is to provide a watt-hour meter that can reduce the number of parts and reduce the cost, and can replace the current communication device with the metering device.

  In order to solve the above-mentioned problems, the invention of claim 1 according to the present invention includes a metering device for metering an electric energy, and a communication device attached to the metering device and transmitting the electric energy metered by the metering device to the outside. The metering device includes a first communication device mounting portion for mounting the first metering device mounting portion formed in the existing communication device, and there is a problem in mounting the existing communication device. A second communication device attachment portion is formed at a position where the second communication device attachment portion is not formed, and the communication device does not have the first measurement device attachment portion but has a second measurement device attachment portion attached to the second communication device attachment portion. And it has one housing | casing in which the circuit part attachment part for attaching the circuit part of a communication apparatus was formed.

  According to the second aspect of the present invention, the second weighing device mounting portion is formed by extending from the side surface portion of the housing, and the second weighing device mounting portion is formed as a concave portion for accommodating the second weighing device mounting portion inside the base of the weighing device. A communication device mounting portion is formed.

  According to a third aspect of the present invention, a slit is formed in a part of the second communication device mounting portion from the base surface toward the second weighing device mounting portion fitting portion, and the second weighing device mounting portion has a slit in the slit. The taper-shaped rib which passes through is formed.

  The invention of claim 4 has a measuring device connection connector for connecting to the weighing device in the circuit portion of the communication device, and for connecting the weighing device connecting connector to the circuit portion provided in the weighing device. It has a connector for connecting a communication device, and a hole for passing both connectors is formed in the base of the weighing device.

  The invention of claim 5 has a connection terminal made of a metal member for connecting the circuit portion of the communication device and the circuit portion provided in the weighing device, and a hole portion through which the connection terminal is passed is formed in the base of the weighing device. It is characterized by being.

  According to the present invention, since the lower case of the communication device can be deleted, the cost can be reduced. In addition, since the second communication device attachment portion is formed at a position where there is no hindrance to the existing communication device attachment, and the second weighing device attachment portion is attached to the second communication device attachment portion, the communication device is used as the weighing device. Can be attached.

  Further, since the first weighing device mounting portion is attached to the first communication device mounting portion, the existing communication device can be attached to the weighing device. That is, the current communication device can be replaced and attached to the weighing device.

It is the perspective view of the measuring device of the watt-hour meter which concerns on Example 1 of this invention, and the perspective view which attached the communication apparatus to the measuring device. It is the perspective view and exploded perspective view of a communication apparatus which concern on Example 1 of this invention. They are the perspective view of the measuring device of the modification of the watt-hour meter which concerns on Example 1 of this invention, the perspective view which attached the communication apparatus to the measuring device, and the perspective view of a communication apparatus. It is the perspective view of the metering apparatus of the watt-hour meter of Example 2 of this invention, the perspective view which attached the communication apparatus to the metering apparatus, and the perspective view of a communication apparatus. It is the perspective view of the measuring apparatus of the modification of the watt-hour meter which concerns on Example 2 of this invention, the perspective view which attached the communication apparatus to the measuring apparatus, and the perspective view of a communication apparatus. It is the perspective view of the metering apparatus of the watt-hour meter of Example 3 of this invention, the perspective view which attached the communication apparatus to the metering apparatus, and the perspective view of a communication apparatus. It is a figure for demonstrating operation | movement of the watt-hour meter which concerns on Example 3 of this invention. They are the perspective view of the measuring device of the modification of the watt-hour meter which concerns on Example 3 of this invention, the perspective view which attached the communication apparatus to the measuring device, and the perspective view of a communication apparatus. It is a figure for demonstrating operation | movement of the modification of the watt-hour meter which concerns on Example 3 of this invention. It is the perspective view of the measuring device of the watt-hour meter of Example 4 of this invention, the perspective view which attached the communication apparatus to the measuring apparatus, the perspective view of a communication apparatus, and the perspective view of the board | substrate of a measuring apparatus. It is the perspective view of the measuring device of the 1st modification of the watt-hour meter which concerns on Example 4 of this invention, and the perspective view of a communication apparatus. It is the perspective view of the measuring device of the 2nd modification of the watt-hour meter which concerns on Example 4 of this invention, and the perspective view of a communication apparatus. It is the perspective view of the metering apparatus of the watt-hour meter of Example 5 of this invention, the perspective view which attached the communication apparatus to the metering apparatus, the perspective view of a board | substrate, and the perspective view of a communication apparatus. It is the perspective view which connected the board | substrate of the communication apparatus of the watt-hour meter of Example 5 of this invention, and the board | substrate of the measuring device with the connection terminal, and the perspective view of a connection terminal. It is a perspective view of the conventional watt-hour meter. It is a disassembled perspective view of the conventional measuring device. It is a disassembled perspective view of the conventional communication apparatus.

  Hereinafter, the watt-hour meter which concerns on embodiment of this invention is demonstrated in detail, referring drawings.

  FIG. 1A is a diagram illustrating a weighing device from which the communication device of the watt-hour meter according to the first embodiment is removed. FIG.1 (b) is a figure which shows the watt-hour meter which attached the communication apparatus to the metering apparatus. Fig.2 (a)-FIG.2 (c) are the perspective views of a communication apparatus. 2D to 2E are exploded perspective views of the communication device. FIG. 2F is a perspective view of the communication device housing.

  The watt hour meter has a base 6A for fixing a current line with a current line mounting screw 2 and a case 5 for housing the base 6A, and a measuring device for measuring the amount of electric power, and is attached to the measuring device and measured by the measuring device. And a communication device that transmits the amount of power to the outside.

  As shown in FIG. 1 (a), the base 6A has a weighing device mounting portion 13a (in the first weighing device mounting portion of the present invention) formed in the conventional communication device housing 13 shown in FIG. Communication device mounting portion 6b (corresponding to the first communication device mounting portion of the present invention). The base 6A is formed with communication device mounting portions 6d1, 6d2, 6e1, 6e2 (corresponding to the second communication device mounting portion of the present invention) at positions where there is no hindrance to the mounting of the conventional communication device housings 12, 13. Has been.

  The communication device housing 12A is composed of a single housing, and does not have the weighing device mounting portion 13a and does not have the weighing device mounting portion 6d1, 6d2, 6e1, as shown in FIGS. 2 (a) to 2 (c). 6e2 has weighing device mounting portions 121a, 121b, 122a, 122b (corresponding to the second weighing device mounting portion of the present invention). Further, as shown in FIGS. 2B and 2C, the communication device 12A is formed with a circuit portion attachment portion 123 for attaching the substrate (circuit portion) 9 of the communication device housing 12A.

  The weighing device attachment portions 121a and 121b are formed to protrude from the end portion of the upper surface portion 12A1 of the communication device housing 12A. The weighing device attachment portions 122a and 122b are formed of claw portions that are formed to protrude from the housing side surface portions 12A2 and 12A3 of the communication device housing 12A.

  The communication device attachment portions 6d1 and 6d2 are formed with recesses, and these recesses are fitted with the protrusions of the weighing device attachment portions 121a and 121b of the communication device housing 12A. The communication device attachment portions 6e1 and 6e2 are formed of protrusions having grooves, and the claw portions of the weighing device attachment portions 122a and 122b are fitted into the grooves. The weighing device attachment portions 121a, 121b, 122a, and 122b of the communication device are attached to the communication device attachment portions 6d1, 6d2, 6e1, and 6e2.

  As shown in FIGS. 2D and 2E, the communication device housing 12A includes a substrate 9, a cable 10, and connectors 10a and 10b. An LED light guide hole 12a for attaching the LED light guide unit 11 is formed in the communication device casing 12A. The substrate 9 includes an LED 9a and a cable connection connector 9b. The light from the LED 9 a is irradiated to the communication device housing 12 </ b> A via the LED light guide 11.

  A measuring device connection connector 10 a is attached to one end of the cable 10, and a board connection connector 10 b is attached to the other end of the cable 10. The board connecting connector 10b is connected to the cable connecting connector 9b.

  According to the watt-hour meter according to the first embodiment configured as described above, since only the communication device housing 12A is provided, the conventional communication device housing 13 can be deleted, and thus the cost can be reduced. Further, communication device mounting portions 6d1, 6d2, 6e1, 6e2 are formed at positions where there is no hindrance to mounting of the conventional communication device, and weighing device mounting portions 121a, 121b, 122a are formed in the communication device mounting portions 6d1, 6d2, 6e1, 6e2. 122b can be attached to the base 6A.

  Further, since the weighing device attachment portion 13a is attached to the communication device attachment portion 6b, the conventional communication device housing 13 can be attached to the weighing device. That is, the current communication device can be replaced and attached to the weighing device.

  Fig.3 (a) is a measuring device of the modification of the watt-hour meter of Example 1 of this invention, FIG.3 (b) is the perspective view which attached the communication apparatus to the measuring device. 3C and 3D are perspective views of the communication device. In the first embodiment, the communication device mounting portions 6e1 and 6e2 are provided along the horizontal portion of the base 6A (the side where the current line mounting screw 2 is provided). However, in the modified example, as shown in FIG. Communication device mounting portions 6e3 and 6e4 are provided along the vertical portion 6B (side orthogonal to the horizontal portion).

  The weighing device attachment portions 122c and 122d are claw portions that are formed to protrude from the housing side surface portions 12A2 and 12A3 of the communication device housing 12B. The communication device attachment portions 6e3 and 6e4 are formed of protrusions having grooves, and the claw portions of the weighing device attachment portions 122c and 122d are fitted into the grooves.

  Therefore, also in the modification of the first embodiment, the same effect as that of the first embodiment can be obtained.

  4A is a watt-hour metering device according to the second embodiment of the present invention, and FIG. 4B is a perspective view of the communication device attached to the metering device. 4C and 4D are perspective views of the communication device. In the watt-hour meter of the second embodiment, as shown in FIGS. 4D and 4E, the weighing device attachment portions 122e and 122f formed on the communication device housing 12C are the longitudinal sides of the housing side surface portions 12A2 and 12A3. It consists of the protrusion in which the nail | claw part 122f1 extended | stretched to the direction was formed. As shown in FIG. 4A, the communication device mounting portions 6e5 and 6e6 formed in the weighing device are formed with recesses so that the weighing device mounting portions 122e and 122f are housed inside the base.

  According to the watt-hour meter according to the second embodiment configured as described above, the weighing device mounting portions 122e and 122f formed on the communication device housing 12C are inserted into the recesses of the communication device mounting portions 6e5 and 6e6, and the claws The portion 122f1 is hooked on the hook portion 6C1 formed on the base 6C. Therefore, the communication device casing 12C can be sealed so that it cannot be removed unless the weighing device is disassembled.

  FIG. 5A is a perspective view of a measuring device of a modification of the watt-hour meter of the second embodiment. FIG.5 (b) is the perspective view which attached the communication apparatus of the modification of the watt-hour meter of Example 2 to the metering apparatus. 5C and 5D are perspective views of the communication device. In the second embodiment, the communication device mounting portions 6e5 and 6e6 are provided along the horizontal portion of the base 6C (the side where the current line mounting screw 2 is present). However, in the modified example, as shown in FIG. Communication device mounting portions 6e7 and 6e8 are provided along a 6D vertical portion (side orthogonal to the horizontal portion).

  Further, as shown in FIG. 5 (d), the weighing device attachment portions 122g and 122h are claw portions formed by extending and projecting in the short side direction of the housing side surface portions 12A2 and 12A3 of the communication device housing 12D. Consists of. As shown in FIG. 5 (a), the communication device mounting portions 6e7 and 6e8 are formed of a concave portion having a hook portion (not shown). Get caught.

  Therefore, also in the modification of the second embodiment, the same effect as that of the second embodiment can be obtained.

  FIG. 6A is a watt-hour metering device according to the third embodiment of the present invention, and FIG. 6B is a perspective view of the communication device attached to the metering device. 6C and 6D are perspective views of the communication device. As shown in FIG. 6A, slits 6f1 and 6f2 are formed in a part of the communication device mounting portions 6e9 and 6e10 formed as concave portions from the base surface to the weighing device mounting portion fitting portion. Tapering ribs 126a and 126b passing through the slits 6f1 and 6f2 are formed in the weighing device attachment portions 122i and 122j.

  The operation of the watt-hour meter according to the third embodiment configured as described above will be described with reference to FIG. FIG. 7A shows that the jig 21 is inserted from above in the state in which the communication device housing 12E is attached to the weighing device. FIG. 7B shows the tip of the jig 21. The state inserted in the slits 6f1 and 6f2 is shown. FIGS. 7C, 7D, and 7E show details of the operation of the claw portion in the operations of FIGS. 7A and 7B.

  FIG. 7 (c) shows a state in which the communication device housing is attached to the weighing device, the weighing device attachment portions 122i and 122j are inserted into the communication device attachment portions 6e9 and 6e10 having recesses, and the claw portions 122i1 and 122j1 are It shows that it is engaged with the engaging portion 6E1. FIG. 7D shows a state in which the jig 21 has started to be inserted into the slits 6f1 and 6f2. In FIG. 7E, the jig 21 is further inserted, and the tapered portion 21a at the tip of the jig 21 slides on the tapered portions 126a1 and 126b1 of the tapered ribs 126a and 126b to attach the measuring device. The state where the parts 122i and 122j are pushed inward (leftward) and the claw parts 122i1 and 122j1 are disengaged from the engaging part 6E1 is shown. For this reason, the communication device 12E can be detached from the weighing device without disassembling the weighing device.

  FIG. 8A shows a metering device according to a modification of the watt-hour meter according to the third embodiment of the present invention. FIG. 8B is a perspective view of the communication device attached to the weighing device. 8C and 8D are perspective views of the communication device. In the third embodiment, the communication device mounting portions 6e9 and 6e10 are provided along the horizontal portion of the base 6E (the side where the current line mounting screw 2 is present). However, in the modified example, as shown in FIG. Communication device mounting portions 6e11 and 6e12 are provided along the vertical portion (the side orthogonal to the horizontal portion) of 6F.

  In addition, slits 6f3 and 6f4 are formed in a part of the communication device mounting portions 6e11 and 6e12 formed as concave portions from the base surface toward the weighing device mounting portion fitting portion. Tapering ribs 126c and 126d passing through the slits 6f3 and 6f4 are formed in the weighing device attachment portions 122l and 122k. FIG. 9A shows that the jig 21 is inserted from above in the state where the communication device housing 12F is attached to the weighing device, and FIG. The state which inserted in slit 6f3, 6f4 is shown.

  The method for removing the communication device housing 12F from the weighing device without disassembling the weighing device only in the insertion direction of the jig 21 is the same as in FIGS. 7C, 7D, and 7E.

  Therefore, also in the modification of the third embodiment, the same effect as that of the third embodiment can be obtained.

  FIG. 10A is a watt-hour metering device according to the fourth embodiment of the present invention, and FIG. 10B is a perspective view of the communication device attached to the metering device. FIG. 10C is a perspective view of the communication device, and FIG. 10D is a perspective view of the substrate 1A of the weighing device. Communication device mounting portions 6e3 and 6e4 formed on the base 6G are the same as the communication device mounting portions 6e3 and 6e4 shown in FIG. Further, a second connector through hole 6g is formed in the base 6G.

  As shown in FIG. 10C, a measuring device connecting connector 9c passing through a second connector through hole 6g formed in the base 6G is attached to the substrate 9 of the communication device. As shown in FIG. 10D, the communication device connection connector 1c connected to the measurement device connection connector 9c attached to the communication device substrate 9 is attached to the substrate 1A of the measurement device.

  Thus, according to the watt-hour meter of Example 4, the measuring device connecting connector 9c is inserted through the second connector through hole 6g and connected to the communication device connecting connector 1c. That is, by connecting the connectors, the number of cables can be reduced, the installation work of the communication device can be simplified, and the assembly work cost can be reduced.

  Fig.11 (a) is a perspective view of the measuring device of the 1st modification of the watt-hour meter of Example 4 of this invention. FIG. 11B is a perspective view of the communication device. Communication device mounting portions 6e7 and 6e8 formed on the base 6H are the same as the communication device mounting portions 6e7 and 6e8 shown in FIG. Further, a second connector through hole 6g is formed in the base 6H.

  As shown in FIG. 11B, a measuring device connection connector 9c passing through a second connector through hole 6g formed in the base 6H is attached to the substrate 9 of the communication device housing 12H. A communication device connection connector 1c is attached to the substrate 1A of the weighing device.

  As described above, the watt-hour meter of the first modified example of the fourth embodiment can obtain the same effect as that of the fourth embodiment.

  Fig.12 (a) is a perspective view of the measuring device of the 2nd modification of the watt-hour meter of Example 4 of this invention. FIG. 12B is a perspective view of the communication device. Communication device attachment portions 6e11 and 6e12 formed on the base 6I are the same as the communication device attachment portions 6e11 and 6e12 shown in FIG. The base 6I is formed with a second connector through hole 6g.

  As shown in FIG. 12B, a measuring device connecting connector 9c passing through a second connector through hole 6g formed in the base 6I is attached to the substrate 9 of the communication device casing 12I. A communication device connection connector 1c is attached to the substrate 1A of the weighing device.

  As described above, the watt-hour meter of the second modification of the fourth embodiment can also obtain the same effect as that of the fourth embodiment.

  Fig.13 (a) is a perspective view of the metering apparatus of the watt-hour meter of Example 5 of this invention. FIG.13 (b) is the perspective view which attached the communication apparatus of the watt-hour meter of Example 5 of this invention to the metering apparatus. FIG. 13C is a perspective view of the substrate of the weighing device. FIG. 13D is a perspective view of the communication device housing 12 </ b> J provided with the substrate 9. As shown in FIG. 13A, communication device mounting portions 6e3 and 6e4 are formed in the base 6J, and a connection terminal through hole 6h is formed.

  As shown in FIG. 13C, four terminal portions 1d having conductivity are provided at equal intervals on the end portion of the substrate 1B of the weighing device.

  As shown in FIG. 13 (d), four terminal portions 9d having conductivity are provided at equal intervals on the end portion of the substrate 9 provided in the communication device casing 12J. Four connection terminals 22 made of a metal member such as phosphor bronze and having spring properties are attached to the four terminal portions 9d. As shown in FIG. 14B, the four connection terminals 22 are L-shaped, and are formed with substrate sandwiching portions 22a and 22b made of notches arranged at positions orthogonal to each other.

  As shown in FIG. 14A, the board sandwiching section 22a sandwiches the terminal section 9d of the board 9 of the communication device casing 12J. As shown in FIG. 14A, the substrate sandwiching portion 22b sandwiches the terminal portion 1d of the substrate 1B of the weighing device.

  In addition, as shown in FIG. 13D, the communication device casing 12J is formed with four protrusions 127 at equal intervals in contact with the four connection terminals 22 arranged at equal intervals. The protrusion 127 fixes the corresponding connection terminal 22 so that adjacent connection terminals 22 do not contact each other.

  According to the watt-hour meter of Example 5 configured as described above, the connection terminal 22 can be used to electrically connect the communication device substrate 9 and the weighing device substrate 1B. Further, since the connection terminal 22 made of a metal member is used by reducing the number of cables, the installation work of the communication device is simplified and the assembly work cost can be reduced.

1, 9 Substrate 1a Display unit 1b, 1c Communication device connector 1d Terminal unit 2 Current line mounting screw 3 Conductor unit 4 Sensor unit 5 Case 6, 6A to 6J Base 6a Connector through hole 6b, 6d1, 6d2, 6e1 to 6e12 Communication device mounting portion 6c Current line through hole 6f1, 6f2 Slit 6g Second connector through hole 6h Connection terminal through hole 7 Cover 8 Cover mounting screw 9a LED
9b Cable connection connector 9c Metering device connection connector 9d Terminal portion 10 Cable 10a Metering device connection connector 10b Substrate connection connector 11 LED light guide portions 12A to 12G Communication device housing 12A1 Upper surface portion 12A2, 12A3 Side surface portion 12a LED guide Light hole 13 Lower case (conventional communication device housing)
13a, 121, 121b, 122a to 122l Weighing device attachment portion 21 Jig 22 Connection terminal 22a Substrate clamping portion 123 Circuit portion attachment portion 125 Space portions 126a to 126d Rib 127 Protrusion portion

Claims (5)

A weighing device for measuring the amount of electric power;
A watt-hour meter comprising a communication device attached to the metering device and transmitting the amount of power metered by the metering device to the outside;
The weighing device has a first communication device mounting portion for mounting a first weighing device mounting portion formed on an existing communication device, and the second communication at a position where there is no hindrance to the existing communication device mounting. A device mounting part is formed,
The communication device does not have a first weighing device attachment portion, but has a second weighing device attachment portion attached to the second communication device attachment portion, and a circuit portion for attaching a circuit portion of the communication device. A watt-hour meter having a single housing in which an attachment portion is formed.   The second weighing device mounting portion is formed by extending from the side surface portion of the housing, and the second communication device mounting portion is formed as a recess for accommodating the second weighing device mounting portion inside the base of the weighing device. The watt-hour meter according to claim 1, wherein   A slit is formed in a part of the second communication device mounting portion from the base surface toward the second weighing device mounting portion fitting portion, and a tapered rib that passes through the slit in the second weighing device mounting portion Is formed. The watt-hour meter according to claim 2. The circuit unit of the communication device has a weighing device connection connector for connecting to the weighing device,
A circuit unit provided in the weighing device has a communication device connection connector for connecting to the measurement device connection connector,
The watt hour meter according to any one of claims 1 to 3, wherein a hole for passing both connectors is formed in the base of the metering device.   It has a connection terminal made of a metal member for connecting the circuit unit of the communication device and the circuit unit provided in the weighing device, and a hole for passing the connection terminal is formed in the base of the weighing device. The watt-hour meter according to any one of claims 1 to 3, wherein the watt-hour meter is characterized by the following.

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