JP2021162426A - Watt-hour meter - Google Patents

Abstract

To provide a watt-hour meter that has a structure allowing for power line connection work without removing a communication device.SOLUTION: A communication device cover 101 having a weighing device fitting portion 101b and a sealing portion through hole 101a is provided. A case 5A of a weighing device is provided, on its upper part, with a communication device connection portion through hole 5A1, a communication device installation portion 5A3, a step portion 5A4, a sealing portion 5A5, and a communication device cover mounting portion 5A6 having a snap-fit structure having a claw portion 5A7 at a tip. After a communication device is installed on the communication device installation portion and a weighing device connection portion 10a of the communication device is connected to a communication device connection portion 1Ab of a circuit unit of the weighing device through the communication device connection portion through hole, a wall surface around the entire circumference of the communication device cover is fit into the step portion, the communication device cover mounting portion is fit into the weighing device fitting portion, and after the sealing portion is inserted through the sealing portion through hole, a sealing cap is attached to the sealing portion.SELECTED DRAWING: Figure 1

Description

The present invention relates to an electric energy meter.

Conventionally, a watt-hour meter has a measuring device, a communication device attached to the measuring device and transmitting the amount of electric power measured by the measuring device to the outside, and a cover.

FIG. 11 is a perspective view of a conventional watt hour meter. FIG. 11A shows the appearance of the watt hour meter, FIG. 11B shows a state in which the cover 7 is removed and the communication device is attached to the base 4, and FIG. 11C shows a state in which the communication device is removed. Is shown. 12 (a) and 12 (b) show an exploded view of a conventional watt hour meter measuring device. FIG. 13 (a) shows the appearance of a conventional communication device for an watt hour meter, and FIG. 13 (b) shows a measuring device mounting portion 13a provided in the communication device. 14 (a) and 14 (b) are exploded views of a conventional watt hour meter communication device.

As shown in FIGS. 11 and 12 (a), the weighing device includes a display unit 1a for displaying the amount of electric power, a circuit unit 1 including a communication device connection unit 1b and an open / close detection unit 1c, and a conductor having an electric wire mounting screw 6. It is composed of a portion 3, a sensor portion 2, a case 5 for accommodating them, a base 4, a cover 7 including a convex portion 7a for detection, and a cover mounting screw 8. The base 4 is provided with a communication device connection portion through hole 4a, a communication device mounting portion 4b, an electric wire through hole 4c, and an open / close detection portion through hole 4d.

The communication device connects the board connection connector 10b of the cable 10 to the cable connection connector 9b of the circuit unit 9, and guides the light of the LED 9a of the circuit unit 9 to the LED light guide unit 11 and the LED of the upper case 12. It is formed by being attached to the light guide hole 12a and housing the circuit portion 9 in the upper case 12 and the lower case 13.

The weighing device connecting portion 10a of the communication device is connected to the communication device connecting portion 1b of the circuit unit 1 through the communication device connecting portion through hole 4a of the base 4 of the measuring device, and the weighing device mounting portion 13a of the lower case 13 of the communication device is connected. Is fitted to the communication device mounting portion 4b of the base 4 of the weighing device, and the cover 7 is attached to the base 4 with the cover mounting screw 8 to form a watt hour meter. At this time, the detection convex portion 7a abuts on the open / close detection unit 1c, and the closed state can be detected (FIGS. 11, 12, 13, 13 and 14).

As a conventional technology, there is a communication device for watt-hour meters 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 existing watt-hour meters. It is known (Patent Document 1).

Japanese Patent No. 5366654

However, in the installation work of the watt hour meter, since the communication device is arranged in front of the wire mounting screw of the base, it is necessary to remove the communication device when mounting the wire. There is also work to install the communication device after the wire installation work, and the cost of work time for removing and installing the communication device has increased.

An object of the present invention is to provide an electric energy meter having a structure capable of performing electric wire connection work without removing a communication device.

In order to solve the above problem, claim 1 of the present invention is to provide a communication device cover having a measuring device fitting portion and a sealing portion through hole in a watt-hour meter including a measuring device having a case, a communication device and a cover. The case of the weighing device is provided with a communication device connection portion through hole at the upper part, a communication device installation portion having a communication device mounting portion, a step portion around the communication device installation portion, and a sealing portion in which sealing parts are embedded in the step portion. , A communication device cover mounting portion having a snap-fit structure having a claw portion at the tip is provided on both left and right sides of the case, the communication device is installed in the communication device installation portion, and the weighing device mounting portion of the communication device is used for the communication. After fitting to the device mounting portion and connecting the weighing device connection portion of the communication device to the communication device connecting portion of the circuit portion of the measuring device through the communication device connecting portion through hole and the communication device connecting portion through hole, the communication After fitting the wall surface of the entire circumference of the device cover to the stepped portion, fitting the claw portion of the communication device cover mounting portion to the measuring device matching portion, and passing the sealing portion through the sealing portion through hole. , Attach the sealing cap to the tip of the sealing component of the weighing device.

A second aspect of the present invention is a watt hour meter including a weighing device having a case, a communication device, and a cover, which has a snap-fit structure weighing device with a claw at the tip and a communication having a sealing portion through hole. A device cover is provided, and the case of the weighing device has a communication device connection portion through hole at the upper part, a communication device installation portion having a communication device mounting portion, a step portion around the communication device installation portion, and a sealing component embedded in the step portion. A communication device cover attachment portion is provided on both the left and right sides of the sealing portion and the case, the communication device is installed in the communication device installation portion, and the weighing device attachment portion of the communication device is fitted to the communication device attachment portion. After connecting the measuring device connection portion of the communication device to the communication device connection portion of the circuit portion of the weighing device through the communication device connection portion through hole and the communication device connection portion through hole, the wall surface of the entire circumference of the communication device cover is formed. After fitting it into the step portion, fitting the claw portion of the weighing device fitting portion into the communication device cover mounting portion, passing the sealing portion through the sealing portion through hole, and then passing the sealing portion of the weighing device. Attach the sealing cap to the tip of the device.

According to claim 3 of the present invention, in a watt-hour meter including a weighing device having a case, a communication device, and a cover, a communication device cover having a measuring device matching portion having a snap-fit structure having a recess is provided, and the weighing device is provided. The case is provided with a communication device connection portion through hole at the upper part, a communication device installation portion having a communication device mounting portion, a step portion around the communication device installation portion, and communication device cover mounting portions on both left and right sides of the case. Is provided with a hole for a communication device cover, the communication device is installed in the communication device installation portion, the weighing device mounting portion of the communication device is fitted to the communication device mounting portion, and the weighing device connecting portion of the communication device is fitted. Is connected to the communication device connection portion of the circuit portion of the measuring device through the communication device connection portion through hole and the communication device connection portion through hole, and then the wall surface of the entire circumference of the communication device cover is fitted to the step portion. The recess of the measuring device matching portion is fitted into the communication device cover mounting portion, and the tip of the measuring device matching portion is inserted into the communication device cover hole portion of the cover.

A fourth aspect of the present invention is a watt-hour meter including a weighing device having a case, a communication device having an upper case, and a cover. Provides a communication device connection part through hole, a communication device installation part, a step portion around the communication device installation part, and a communication device cover mounting part on both the left and right sides of the case, and attaches the communication device to the communication device installation part. After installing and connecting the measuring device connection part of the communication device to the communication device connection part of the circuit part of the measuring device through the communication device connection part through hole and the communication device connection part through hole, the upper case of the communication device The wall surface on the entire circumference is fitted to the step portion, and the weighing device fitting portion is fitted to the communication device cover mounting portion.

A fifth aspect of the present invention is a watt-hour meter including a weighing device having a case and a base, a communication device, and a cover. A through hole for a communication device connection portion, a slit for a cover open / close detection portion, a communication device connection portion and an open / close detection portion for the circuit portion of the weighing device are provided on the front surface, and a sealing component is embedded in the base of the weighing device. A snap-fit structure weighing device having a sealing portion, the cover having a shape covering the entire weighing device and the communication device, a waterproof rib at the upper part, and a sealing portion through hole and a claw portion at the lower part. A matching portion is provided, the communication device is installed in the communication device installation portion, the weighing device mounting portion of the communication device is fitted to the communication device mounting portion, and the weighing device connecting portion of the communication device is fitted to the communication device. By connecting to the communication device connection portion through the connection portion through hole and inserting the cover from the front of the weighing device, the open / close detection portion is turned on at the contact surface of the cover, and the seal portion is passed through the seal portion. By inserting the cover into the hole and sliding the cover downward, the waterproof rib is fitted into the waterproof recess, the claw portion is fitted to the lower end of the base, and the tip portion of the sealing component is sealed. Install the cap.

According to the invention of claim 1, by changing the shape of the weighing device and arranging it on the upper part of the communication device as compared with the current product, the work of connecting the electric wire at the time of attaching the watt-hour meter without removing the communication device. The sex can be improved.

According to the invention of claim 2, since the measuring device fitting portion of the communication cover is located below, the workability of attaching and detaching the communication cover can be improved.

According to the invention of claim 3, since there is no sealing portion, cost reduction can be achieved.

According to the invention of claim 4, since there is no communication device cover and only the communication device needs to be attached and detached, workability can be improved.

According to the invention of claim 5, since it can be opened and closed with one cover, workability can be improved.

It is a perspective view of the electric energy meter which concerns on 1st Embodiment of this invention. It is a perspective view and cross-sectional view of the electric energy meter which concerns on 1st Embodiment of this invention, and is a perspective view of a communication device cover. It is a perspective view and cross-sectional view of the electric energy meter which concerns on 2nd Embodiment of this invention. It is a perspective view and cross-sectional view of the electric energy meter which concerns on 3rd Embodiment of this invention. It is a perspective view of the electric energy meter and the communication device for an electric energy meter which concerns on 4th Embodiment of this invention. It is a perspective view of the communication device for an electric energy meter which concerns on 4th Embodiment of this invention. It is a perspective view of the electric energy meter which concerns on 5th Embodiment of this invention. It is an assembly perspective view of the electric energy meter which concerns on 5th Embodiment of this invention. It is an assembly sectional view of the electric energy meter which concerns on 5th Embodiment of this invention. It is a perspective view of the cover of the electric energy meter which concerns on 5th Embodiment of this invention. It is a perspective view of the conventional watt hour meter. It is an exploded view of the conventional watt hour meter. It is a perspective view of the communication device for a conventional watt hour meter. It is an exploded view of the communication device for a conventional watt hour meter.

Hereinafter, the watt-hour meter according to the embodiment of the present invention will be described in detail with reference to the drawings.

(First Embodiment)
FIG. 1 is a perspective view of a watt-hour meter according to the first embodiment of the present invention. FIG. 1A is a perspective view of the weighing device. 1 (b) and 1 (c) are perspective views showing a state in which a communication device is attached to the weighing device. FIG. 1D is a perspective view showing a state in which the communication device cover 101 is attached to the weighing device.

In FIG. 1, above the case 5A of the weighing device, there is a communication device connecting portion through hole 5A1 for connecting the weighing device connecting portion 10a of the communication device to the communication device connecting portion 1Ab of the circuit unit 1A of the measuring device, and an upper case. A communication device installation portion 5A3 having a communication device mounting portion 5A2 for mounting the weighing device mounting portion 13a of the communication device including the 12 and the lower case 13 is provided.

A step portion 5A4 is formed around the communication device installation portion 5A3, and the step portion 5A4 is provided with a sealing portion 5A5 in which a sealing component 102 is embedded. Further, on the left and right side surfaces of the step portion 5A4, a communication device cover mounting portion 5A6 having a snap-fit structure having a claw portion 5A7 at the tip is provided.

FIG. 2A is a perspective view of the watt hour meter. FIG. 2B is a cross-sectional view of the combined portion of the communication device cover mounting portion 5A6. 2 (c) and 2 (d) are perspective views of the communication device cover 101. As shown in FIG. 2 (c), the communication device cover 101 includes a weighing device combining portion 101b for attaching the communication device cover 101 to the communication device cover mounting portion 5A6 of the case 5A of the weighing device, and a seal of the weighing device. A sealing portion through hole 101a for passing the portion 5A5 is provided.

Next, a method of assembling the watt-hour meter according to the first embodiment configured in this way will be described. First, the communication device is installed in the communication device installation portion 5A3 of the case 5A of the weighing device, and the weighing device mounting portion 13a (shown in FIG. 13B) of the lower case 13 of the communication device is communicated with the case 5A of the weighing device. It is fitted to the device mounting portion 5A2. Next, the measuring device connecting portion 10a of the communication device is connected to the communication device connecting portion 1Ab of the circuit unit 1A through the communication device connecting portion through hole 5A1 of the measuring device case 5A and the communication device connecting portion through hole 4Aa of the base 4A. After that, as shown in FIGS. 1A and 1D, the wall surface of the entire circumference of the communication device cover 101 is fitted into the stepped portion 5A4 of the case 5A of the weighing device. At the same time, as shown in FIG. 2B, the claw portion 5A7 of the communication device cover mounting portion 5A6 of the case 5A of the weighing device is fitted to the weighing device matching portion 101b of the communication device cover 101.

Further, after passing the sealing portion 5A5 of the case 5A of the weighing device through the sealing portion through hole 101a of the communication device cover 101 shown in FIG. 2 (c), the tip of the sealing component 102 of the weighing device shown in FIG. 1 (a). The sealing cap 103 shown in FIG. 2A is attached to the portion. As a result, the communication device cover 101 can be sealed. After that, by attaching the cover 7A, the assembly of the watt hour meter can be completed.

As described above, according to the watt-hour meter according to the first embodiment, the shape of the case 5A of the weighing device is changed and placed on the upper part of the communication device as compared with the current product, so that the communication device is not removed. , It is possible to improve the workability of the electric wire connection work when installing the watt-hour meter.

(Second Embodiment)
FIG. 3 is a perspective view of the watt-hour meter according to the second embodiment of the present invention. FIG. 3A is a perspective view showing a state in which a communication device is attached to the weighing device. FIG. 3B is a perspective view showing a state in which the communication device cover 201 is attached to the weighing device. FIG. 3C is a perspective view of the watt hour meter. FIG. 3D is a cross-sectional view of the combined portion of the measuring device integrated portion 201b.

As shown in FIG. 3A, the watt-hour meter according to the second embodiment has a communication device cover 201 on both left and right sides of the case 5B of the weighing device with respect to the watt-hour meter according to the first embodiment. A communication device cover mounting portion 5B6 formed of a recess for mounting the device is provided. Further, similarly to the watt-hour meter according to the first embodiment, a communication device having a communication device connection portion through hole 5B1 and a communication device mounting portion 5B2 (corresponding to the communication device mounting portion 5A2) is installed in the upper part of the case 5B. A sealing portion 5B5 in which a sealing component 202 is embedded in the stepped portion 5B4 and the stepped portion 5B4 is provided around the portion 5B3 and the communication device installation portion 5B3.

The communication device cover 201 shown in FIG. 3B is provided with a snap-fit structure weighing device matching portion 201b having a claw portion 201c at the tip and a sealing portion through hole 201a (corresponding to the sealing portion through hole 101a). Has been done.

Next, a method of assembling the watt-hour meter according to the second embodiment configured in this way will be described. First, the communication device is installed in the communication device installation portion 5B3 of the case 5B of the weighing device, and the weighing device mounting portion 13a of the lower case 13 of the communication device is fitted to the communication device mounting portion 5B2 of the case 5B of the weighing device.

Next, the measuring device connecting portion 10a of the communication device is connected to the communication device connecting portion 1Bb of the circuit unit 1B through the communication device connecting portion through hole 5B1 of the measuring device case 5B and the communication device connecting portion through hole 4B of the base 4B.

After that, the entire peripheral wall surface of the communication device cover 201 is fitted into the stepped portion 5B4 of the case 5B of the weighing device. At the same time, the claw portion 201c of the weighing device matching portion 201b of the communication device cover 201 is fitted to the communication device cover mounting portion 5B6 of the case 5B of the weighing device.

Further, after passing the sealing portion 5B5 of the case 5B of the weighing device through the sealing portion through hole 201a (corresponding to the sealing portion through hole 101a) of the communication device cover 201, the sealing cap 203 is attached to the tip portion of the sealing component 202 of the weighing device. Install. Thereby, the communication device cover 201 can be sealed. After that, by attaching the cover 7B, the assembly of the watt hour meter can be completed.

As described above, according to the watt-hour meter according to the second embodiment, the shape of the case 5B of the weighing device is changed and placed on the upper part of the communication device as compared with the current product, so that the communication device is not removed. , It is possible to improve the workability of the electric wire connection work when installing the watt-hour meter.

(Third Embodiment)
FIG. 4 is a perspective view of the watt-hour meter according to the third embodiment of the present invention. FIG. 4A is a perspective view showing a state in which a communication device is attached to the weighing device. FIG. 4B is a perspective view showing a state in which the communication device cover 301 is attached to the weighing device. FIG. 4C is a perspective view of the watt hour meter. FIG. 4D is a cross-sectional view of the combined portion of the measuring device integrated portion 301a.

As shown in FIG. 4D, the communication device cover 301 is provided with a weighing device fitting portion 301a having a snap-fit structure having a recess 301b for mounting the measuring device. A cover insertion portion 301c provided with a step is provided at the tip of the weighing device integrating portion 301a.

Further, similarly to the watt-hour meter according to the first embodiment, a communication device having a communication device connection portion through hole 5C1 and a communication device mounting portion 5C2 (corresponding to the communication device mounting portion 5A2) is installed in the upper part of the case 5C. A step portion 5C4 is provided around the portion 5C3 and the communication device installation portion 5C3, and a communication device cover mounting portion 5C5 is provided on both left and right sides of the case 5C. The cover 7C is provided with a communication device cover hole 7C1 for inserting the cover insertion portion 301c provided at the tip of the weighing device matching portion 301a of the communication device cover 301.

Next, a method of assembling the watt-hour meter according to the third embodiment configured in this way will be described. First, the communication device is installed in the communication device installation portion 5C3 of the case 5C of the weighing device, and the weighing device mounting portion 13a of the lower case 13 of the communication device is mounted on the communication device mounting portion 5C2 (communication device mounting portion) of the case 5C of the weighing device. (Equivalent to 5A2).

Next, the measuring device connecting portion 10a of the communication device is connected to the communication device connecting portion 1Cb of the circuit unit 1C through the communication device connecting portion through hole 5C1 of the measuring device case 5C and the communication device connecting portion through hole 4Ca of the base 4C.

After that, the entire peripheral wall surface of the communication device cover 301 is fitted to the stepped portion 5C4 of the case 5C of the weighing device, and the measuring device mounting recess 301b inside the weighing device matching portion 301a of the communication device cover 301 is fitted to the case 5C. It is fitted to the communication device cover mounting portion 5C5 of the above.

Next, the communication device cover 301 can be sealed by inserting the cover insertion portion 301c at the tip of the weighing device matching portion 301a of the communication device cover 301 into the communication device cover hole 7C1 of the cover 7C. , The assembly of the electricity meter can be completed.

According to the watt-hour meter according to the third embodiment, the sealing portion of the measuring device can be eliminated from the watt-hour meter according to the second embodiment.

(Fourth Embodiment)
FIG. 5 is a perspective view of the watt-hour meter and the communication device for the watt-hour meter according to the fourth embodiment of the present invention. FIG. 5A is a perspective view showing a stage before assembling the communication device into the weighing device. FIG. 5B is a perspective view showing a state in which the communication device is attached to the weighing device. FIG. 5C is a perspective view showing a communication device. FIG. 5D is a perspective view of the watt hour meter.

Whereas the watt-hour meter according to the first embodiment provides the communication device cover 101 with the measuring device matching portion 101b and the sealing portion through hole 101a, the watt-hour meter according to the fourth embodiment shown in FIG. Is characterized in that the upper case 12D of the communication device is provided with a weighing device matching portion 12D2 and a sealing portion through hole 12D1.

In FIG. 5, in the upper part of the case 5D, there is a communication device connection portion through hole 5D1, a communication device installation portion 5D2, a step portion 5D3 around the communication device installation portion 5D2, and a sealing portion in which a sealing component 402 is embedded in the step portion 5D3. A communication device cover mounting portion 5D5 having a snap-fit structure having a claw portion 5D6 at the tip is provided on both left and right side surfaces of the step portion 5D4 and the step portion 5D3.

As shown in the exploded view of the communication device of FIG. 6, the upper case 12D of the communication device is provided with a weighing device matching portion 12D2 and a sealing portion through hole 12D1.

Next, a method of assembling the watt-hour meter according to the fourth embodiment configured in this way will be described. First, the communication device is installed in the communication device installation portion 5D2 of the case 5D of the weighing device, and the wall surface of the entire circumference of the upper case 12D of the communication device is fitted to the stepped portion 5D3 of the case 5D of the weighing device to fit the communication device. The claw portion 5D6 of the communication device cover mounting portion 5D5 of the communication device cover attachment portion 5D5 of the case 5D of the weighing device is fitted to the weighing device matching portion 12D2 of the upper case 12D, and the sealing portion 5D4 of the case 5D of the weighing device is sealed of the upper case 12D of the communication device. The communication device connection part 1Db of the circuit unit 1D is passed through the communication device connection part through hole 5D1 of the communication device connection part 5D1 of the case 5D of the measurement device and the communication device connection part through hole 4Da of the base 4D. Connect to. Further, the communication device can be sealed by attaching the sealing cap 403 to the tip portion of the sealing component 402 of the measuring device. After that, by attaching the cover 7D, the assembly of the watt hour meter can be completed.

Further, since there is no communication device cover 101 and only the communication device needs to be attached and detached, workability can be improved.

In the watt hour meter according to the second embodiment, the watt-hour meter having a snap-fit structure having a claw portion 201c at the tip of the communication device cover 201 and the sealing portion through hole 201a (in the sealing portion through hole 101a). As a first modification of the watt-hour meter according to the fourth embodiment, the upper case 12D of the communication device is provided with a snap-fit structure measuring device fitting portion having a claw portion at the tip. A through hole for the sealing portion may be provided. In the first modification of the watt-hour meter according to the fourth embodiment, the configuration other than the upper case 12D is the same as the configuration of the watt-hour meter according to the second embodiment.

Further, in the watt hour meter according to the third embodiment, the communication device cover 301 is provided with a snap-fit structure weighing device fitting portion 301a having a recess 301b for mounting the measuring device, and the fourth embodiment As a second modification of the watt hour meter, the upper case 12D of the communication device may be provided with a snap-fit structure weighing device fitting portion and a sealing portion through hole having a recess for mounting the weighing device. In the second modification of the watt-hour meter according to the fourth embodiment, the configuration other than the upper case 12D is the same as the configuration of the watt-hour meter according to the third embodiment.

As described above, also in the first modification and the second modification of the watt-hour meter according to the fourth embodiment, the communication device cover 101 is not provided, and only the communication device can be attached and detached, so that the workability is improved. can do.

(Fifth Embodiment)
FIG. 7 is a perspective view of the watt hour meter according to the fifth embodiment of the present invention. FIG. 7A is a perspective view of the weighing device. 7 (b), (c), and (d) are perspective views showing a state in which a communication device is attached to the weighing device.

8 (a) to 8 (d) are assembly perspective views of the watt-hour meter according to the fifth embodiment of the present invention. 9 (a) to 9 (d) are assembly cross-sectional views of the watt-hour meter according to the fifth embodiment of the present invention. 10 (a) to 10 (b) are perspective views of the cover of the watt hour meter according to the fifth embodiment of the present invention.

The watt-hour meter according to the fifth embodiment does not require a communication device cover as compared with the watt-hour meter according to the first embodiment to the watt-hour meter according to the fourth embodiment, and is entirely covered with a cover. It is a thing.

As shown in FIG. 7A, a communication device installation portion 5E3 having a communication device mounting portion 5E2 and a waterproof recess 5E6 are provided on the upper portion of the case 5E of the weighing device. A recess 5E4 for a communication device cable, a through hole 5E1 for a communication device connection portion, and a slit 5E5 for an open / close detection portion are provided on the front surface of the case 5E. Further, on the front surface of the case 5E, a communication device connection unit 1Eb and an open / close detection unit 1Ec of the circuit unit 1E of the weighing device are arranged.

As shown in FIG. 7C, the base 4E of the weighing device is provided with a cover recess 4E1, a sealing portion 4E2 in which a sealing component 502 is embedded, and an inclined portion 4E3. As shown in FIG. 8A, the cover 7E has a shape that covers the entire weighing device and communication device. As shown in FIG. 9A, the cover 7E has a waterproof rib 7E1 on the upper part, a contact surface 7E2 for turning on the open / close detection part 1Ec on the back side of the front surface, a sealing part through hole 7E5 and a claw part 7E9 on the lower part. , Snap-fit structure weighing device mating part 7E3 with release part 7E8, sealing part insertion part 7E7 that enables insertion and sliding of sealing parts, sealing cap to limit the space for inserting the sealing cap An insertion portion 7E4 and a sealing rib 7E6 are provided.

Next, a method of assembling the watt-hour meter according to the fifth embodiment configured in this way will be described. First, the communication device is installed in the communication device installation portion 5E3 of the case 5E of the weighing device, and the weighing device mounting portion 13a of the lower case 13 of the communication device is fitted into the communication device mounting portion 5E2 of the case 5E of the weighing device. Next, the measuring device connecting portion 10a of the communication device is connected to the communication device connecting portion 1Eb of the circuit unit 1E through the communication device connecting portion through hole 5E1 of the case 5E of the measuring device. Next, as shown in FIG. 8A, the cover 7E is inserted from the front direction of the weighing device, and as shown in FIG. At the same time that the contact surface 7E2 is turned on, the sealing portion 4E2 of the base 4E of the weighing device is inserted into the sealing portion through hole 7E5 of the cover 7E and housed in the sealing component insertion portion 7E7. Next, as shown in FIG. 9B, by sliding the cover 7E downward, as shown in FIG. 9C, the waterproof rib 7E1 of the cover 7E is moved to the waterproof recess of the case 5E of the weighing device. At the same time as fitting to 5E6, the claw portion 7E9 of the weighing device fitting portion 7E3 of the cover 7E bends along the inclined portion 4E3 of the base 4E of the weighing device, and the claw portion 7E9 disengages beyond the inclined portion 4E3 and is the original. By returning to the state and fitting the claw portion 7E9 to the lower end of the base 4E of the weighing device, the closed state of the cover 7E can be maintained. Finally, as shown in FIG. 9D, by attaching the sealing cap 503 to the tip of the sealing component 502 of the base 4E of the weighing device, the sealing cap 503 can be used for sealing with the sealing cap insertion portion 7E4 of the cover 7E. It will be housed in the part surrounded by the ribs 7E6, and the cover can be sealed.

When removing the cover 7E, first, the sealing cap 503 is removed from the tip portion of the sealing part 502 of the base 4E of the weighing device.

Next, by lifting the release portion 7E8 at the tip of the weighing device fitting portion 7E3 of the cover 7E toward the front, the claw portion 7E9 is separated from the lower end of the base 4E of the weighing device, and the cover 7E is slid upward. At the same time as removing the waterproof rib 7E1 of the cover 7E from the waterproof recess 5E6 of the case 5E of the weighing device, the claw portion 7E9 of the weighing device mating portion 7E3 of the cover 7E is placed in the inclined portion 4E3 of the base 4E of the weighing device. It will be in a settled state.

Next, by sliding the cover 7E away from the front of the weighing device, the open / close detection unit 1Ec of the circuit unit 1E of the weighing device is separated from the contact surface 7E2 of the cover 7E and turned off, and at the same time, the weighing device is turned off. The sealing portion 4E2 of the base 4E of the cover 7E comes off from the sealing portion through hole 7E5 of the cover 7E. As a result, the cover 7E can be removed.

The cover 7E can be visualized as a whole by insert molding or welding of transparent parts only around the display unit 1Ea.

As described above, according to the watt-hour meter according to the fifth embodiment, the communication device cover is not required and the entire cover is covered with the cover 7E, so that the cover 7E can be opened and closed, which improves workability. be able to.

1,1A, 1B, 1C, 1E Circuit unit 1a, 1Aa, 1Ba, 1Ca, 1Da, 1Ea Display unit 1b, 1Ab, 1Bb, 1Cb, 1Db, 1Eb Communication device connection unit 1c, 1Ac, 1Bc, 1Cc, 1Dc, 1Ec Open / close detection part 2 Sensor part 3 Conductor part 4, 4A, 4B, 4C, 4D, 4E Base 4a, 4Aa, 4Ba, 4Ca, 4Da Communication device connection part Through hole 4b, 5A2, 5B2, 5C2, 5E2 Communication device mounting part 4c Wire through hole 4d, 4Ad, 4Bd, 4Cd, 4Dd Open / close detection part through hole 4E1 Cover recess 4E3 Inclined part 5,5A, 5B, 5C, 5D, 5E Case 5A1,5B1,5C1,5D1,5E1 Communication device connection part penetration Holes 5A3, 5B3, 5C3, 5D2, 5E3 Communication device installation part 5A4, 5B4, 5C4, 5D3 Step part 5A5, 5B5, 5D4, 4E2 Seal part 5A6, 5B6, 5C5, 5D5 Communication device cover mounting part 5A7,201c, 5D6 7E9 Claw 5E4 Communication device cable recess 5E5 Open / close detection section slit 5E6 Waterproof recess 6 Wire mounting screw 7,7A, 7B, 7C, 7D, 7E Cover 7a Detection convex 7B1 Communication device cover recess 7C1 Communication device cover Holes 7E1 Waterproof ribs 7E2 Contact surfaces 7E3,12D2,101b, 201b, 301a Weighing device fitting part 7E4 Sealing cap insertion part 7E5,12D1,101a, 201a Sealing part through hole 7E6 Sealing rib 7E7 Inserting parts for sealing Part 7E8 Release part 8,8A, 8B, 8C, 8D Cover mounting screw 9,9D Circuit part 9a, 9Da LED
9b Cable connection connector 9Db Cable connection part 10, 10D Cable 10a, 10Da Weighing device connection part 10b Board connection connector 10Db Circuit part connection part 11, 11D LED light guide part 12, 12D Upper case 12a, 12Da LED light guide hole 13, 13D Lower case 13a Weighing device mounting part 101, 201, 301 Communication device cover 102, 202, 402, 502 Sealing parts 103, 203, 403, 503 Sealing cap 301b Weighing device mounting recess 301c Cover insertion part

Claims (5)

In a watt-hour meter including a weighing device having a case, a communication device, and a cover,
A communication device cover with a weighing device matching part and a sealing part through hole is provided.
The case of the weighing device includes a communication device connection portion through hole at the upper part, a communication device installation portion having a communication device mounting portion, a step portion around the communication device installation portion, and a sealing portion and a case in which sealing parts are embedded in the step portion. A communication device cover mounting part with a snap-fit structure with claws at the tip is provided on both the left and right sides of the
The communication device is installed in the communication device installation portion, the weighing device mounting portion of the communication device is fitted to the communication device mounting portion, and the weighing device connection portion of the communication device is communicated with the communication device connection portion through hole. After connecting to the communication device connection portion of the circuit portion of the weighing device through the device connection portion through hole, the wall surface of the entire circumference of the communication device cover is fitted to the step portion, and the communication device is fitted to the measuring device matching portion. A watt-hour meter that fits the claw portion of the cover mounting portion, passes the sealing portion through the sealing portion through hole, and then attaches the sealing cap to the tip portion of the sealing component of the measuring device. In a watt-hour meter including a weighing device having a case, a communication device, and a cover,
A snap-fit structure weighing device with a claw at the tip and a communication device cover with a through hole for the sealing part are provided.
The case of the weighing device includes a communication device connection portion through hole at the upper part, a communication device installation portion having a communication device mounting portion, a step portion around the communication device installation portion, and a sealing portion and a case in which sealing parts are embedded in the step portion. Communication device cover mounting parts are provided on both the left and right sides of the
The communication device is installed in the communication device installation portion, the weighing device mounting portion of the communication device is fitted to the communication device mounting portion, and the weighing device connection portion of the communication device is communicated with the communication device connection portion through hole. After connecting to the communication device connection part of the circuit part of the measuring device through the through hole of the device connecting part, the wall surface of the entire circumference of the communication device cover is fitted to the stepped part, and the claw part of the measuring device matching part is fitted. A watt-hour meter that fits into the communication device cover mounting portion, passes the sealing portion through the sealing portion through hole, and then attaches the sealing cap to the tip portion of the sealing component of the measuring device. In a watt-hour meter including a weighing device having a case, a communication device, and a cover, a communication device cover having a snap-fit structure weighing device matching portion having a recess is provided.
The case of the weighing device is provided with a communication device connection portion through hole at the upper part, a communication device installation portion having a communication device mounting portion, a step portion around the communication device installation portion, and a communication device cover mounting portion on both left and right sides of the case. , The cover is provided with a hole for a communication device cover.
The communication device is installed in the communication device installation portion, the weighing device mounting portion of the communication device is fitted to the communication device mounting portion, and the weighing device connection portion of the communication device is communicated with the communication device connection portion through hole. After connecting to the communication device connection portion of the circuit portion of the weighing device through the through hole of the device connecting portion, the wall surface of the entire circumference of the communication device cover is fitted to the stepped portion, and the recess of the weighing device fitting portion is fitted into the step portion. A watt-hour meter that fits into the communication device cover mounting portion and inserts the tip of the weighing device fitting portion into the communication device cover hole of the cover. In a watt-hour meter including a weighing device having a case, a communication device having an upper case, and a cover, the upper case of the communication device is provided with a weighing device matching portion.
The case of the weighing device is provided with a communication device connection portion through hole, a communication device installation portion, a step portion around the communication device installation portion, and a communication device cover mounting portion on both left and right sides of the case.
The communication device is installed in the communication device installation portion, and the measuring device connection portion of the communication device is connected to the communication device connection portion of the circuit portion of the measuring device through the communication device connection portion through hole and the communication device connection portion through hole. A watt-hour meter that fits the wall surface of the entire circumference of the upper case of the communication device into the step portion, and fits the weighing device fitting portion into the communication device cover mounting portion. In a watt-hour meter with a weighing device with a case and a base, a communication device and a cover
The case of the weighing device is provided with a communication device installation portion having a communication device mounting portion at the upper part and a waterproof recess, and communication between a communication device connecting portion through hole, a slit for a cover open / close detection portion, and a circuit portion of the weighing device on the front surface. A device connection part and an open / close detection part are provided.
The base of the weighing device is provided with a sealing portion in which sealing parts are embedded.
The cover has a shape that covers the entire weighing device and communication device, is provided with a waterproof rib at the upper part, and is provided with a snap-fit structure weighing device matching portion having a sealing portion through hole and a claw portion at the lower portion.
The communication device is installed in the communication device installation portion, the weighing device mounting portion of the communication device is fitted to the communication device mounting portion, and the weighing device connecting portion of the communication device is passed through the communication device connecting portion through hole. By connecting to the communication device connection portion and inserting the cover from the front of the weighing device, the open / close detection portion is turned on at the contact surface of the cover, and the seal portion is inserted into the seal portion through hole. By sliding the cover downward, the waterproof rib is fitted into the waterproof recess, the claw portion is fitted to the lower end of the base, and the sealing cap is attached to the tip portion of the sealing component. ..

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