JP6444654B2 - Energy meter nameplate cover - Google Patents

Description

  The present invention relates to a cover for covering a nameplate attached to a watt-hour meter.

  The watt-hour meter is usually installed on the switchboard together with various meters, but depending on the outer dimensions of the watt-hour meter, the measurement value display of the watt-hour meter is placed at a position deeper than the opening of the switchboard door, A large gap may be formed between the display unit and the opening. An external cover is known that can be attached as an option to the front surface of the watt hour meter body to eliminate this gap (Patent Document 1).

  However, when an external cover is unnecessary, the nameplate attached to the front surface of the watt hour meter body is exposed to the outside. The nameplate is required to be attached to the electricity meter according to JIS C 1210. For example, the nameplate, phase and wire type, meter constant, model approval number, rated frequency, serial number, year of manufacture, etc. Is written. These descriptions are usually performed by printing or stamping directly on the nameplate. In addition, description and attachment of the nameplate are performed at the time of manufacture of the watt-hour meter.

  However, the description may need to be changed after the nameplate is manufactured. For example, it is necessary to change the description on the nameplate when the shipping destination is changed after the nameplate is manufactured and the regional rated frequency is different, or when the year of manufacture changes at the time of shipment at the end of the year. . In this case, it is necessary to make a new nameplate and remove and replace the nameplate already attached to the watt hour meter. However, such a replacement operation requires a considerable amount of time and labor. In addition, when the watt-hour meter is a watt-hour meter with a transformer, it is necessary to describe the information of the attached transformer, but it cannot be described until the transformer used in combination with the watt-hour meter is found. The production of the watt-hour meter will stagnate there, causing the delivery time to be extended for the manufacturer.

  On the other hand, it is conceivable to display the nameplate directly with a sticker or a sticker. However, the nameplate is exposed to the outside, so it can be rewritten by an unspecified third party, There is a risk of peeling off, and the reliability of the description is lacking. Therefore, it is not suitable for a watt-hour meter used for fee trading or proof.

  Conventionally, the nameplate has a function to protect the watt-hour meter from being scratched and to prevent external pressure from being applied. The thickness of the nameplate is sufficient to perform this function. And strength.

JP 2013-24767 A

  ADVANTAGE OF THE INVENTION According to this invention, the description content of a nameplate can be changed easily, and the nameplate cover of the watt-hour meter which can protect a nameplate description matter reliably can be provided.

  According to invention of Claim 1, the nameplate cover attached to the front surface of a watt-hour meter main body is provided. The front face of the watt-hour meter body includes a visual recognition part where the measured value is visually recognized, and a name plate that covers the visual recognition part so as to be visible and displays predetermined description items around the visual recognition part is attached. The cover is formed of a transparent member that covers at least the visual recognition portion and the nameplate, and further includes a sealing portion for sealing the nameplate cover. According to this configuration, the nameplate can be protected without being exposed to the outside in a state where the nameplate can be visually recognized from the outside. Therefore, among the items that have been printed or stamped directly on the nameplate in the past, for the items to be changed, create a sticker that describes this and paste it on the nameplate to easily change the description. Can do. Further, since the nameplate cover can be sealed by the sealing portion, there is no fear of rewriting or peeling off of a seal by a third party, and therefore high reliability of the items described on the nameplate can be ensured. In addition, since the nameplate cover covers the front surface including the viewing portion of the watt hour meter, the nameplate cover can have a protective function for the viewing portion of the watt hour meter, which the conventional nameplate has, and therefore the nameplate itself The thickness and strength required for the can be reduced.

  According to the invention of claim 2, the watt hour meter main body is a main body of a watt hour meter with a transformer, and includes a setting switch for setting a predetermined item related to the transformer. The nameplate cover according to claim 1, which can cover the setting switch. According to this configuration, it is not necessary to separately attach the nameplate cover and the sealing cover of the setting switch to the watt-hour meter main body, so that the working efficiency can be improved.

  According to invention of Claim 3, the nameplate cover of Claim 1 or 2 which can be attached or detached from the watt-hour meter main body can be provided. According to this configuration, by attaching and detaching the nameplate cover, it is possible to easily perform sticking or the like of the seal indicating the changed portion of the nameplate description.

  According to invention of Claim 4, the nameplate cover as described in any one of Claims 1-3 provided with the attaching part for attaching an external cover further can be provided. According to this configuration, it is possible to adjust the height of the switchboard door by attaching an external cover to the nameplate cover. In addition, the nameplate cover can be removed with the external cover attached, and the work efficiency when the nameplate cover is attached / detached can be improved.

It is a disassembled perspective view of the watt-hour meter to which the nameplate cover of this embodiment is attached. It is a figure which shows the attachment / detachment mechanism of a nameplate cover and a watt-hour meter main body. It is a figure which shows attachment of the external cover with respect to a nameplate cover. It is a front view of the watt-hour meter which shows another example of a sealing part.

  Hereinafter, a nameplate cover according to an embodiment of the present invention will be described with reference to the accompanying drawings. In addition, in this specification, terms indicating directions such as “up”, “down”, “left”, “right”, “front”, “rear”, “front”, and “rear” are used when the watt hour meter is installed on a switchboard or the like. Used for status.

  FIG. 1 is an exploded perspective view of the watt hour meter to which the nameplate cover 1 of the present embodiment is attached, and shows a state in which the nameplate 2 is attached to the front surface of the watthour meter main body 7. The watt-hour meter is a watt-hour meter for fare transactions or certification that can be installed on the switchboard. A display unit 3 is disposed in the center of the front surface of the watt hour meter body 7, and the display unit 3 has a visual recognition unit 3 a where the measured value of the watt hour meter is visually recognized, and the nameplate 2 is attached. A predetermined description item is configured to be displayed. The nameplate 2 covers the front surface of the display unit 3 and has a rectangular transparent window 4 at a position corresponding to the visual recognition part 3a so that the measured value of the watt hour meter can be visually recognized. Covered by the window 4. The name plate 2 is a plate-like member made of plastic, and is bonded to the watt hour meter body 7. Incidentally, 5 is a hole formed in the nameplate 2 corresponding to the operation button of the watt-hour meter. Moreover, the watt-hour meter main body 7 used in the present embodiment is a main body of a transformer-equipped watt-hour meter, and a setting switch 6 is disposed on the front upper portion of the watt-hour meter main body 7. The setting switch 6 is a switch used for setting predetermined items related to the transformer, such as a multiplication factor and a transformation ratio according to the transformer combined with the wattmeter body 7.

  The nameplate cover 1 of this embodiment is formed of a transparent member as a whole, and can cover at least the visual recognition part 3a and the nameplate 2 around the visual recognition part 3a. By forming the nameplate cover 1 with a transparent member as a whole, the nameplate 2 can be protected from the outside without hindering the visibility of the measured value of the watt hour meter and the description of the nameplate 2. Therefore, among the description items on the nameplate, the description items can be easily changed by creating a sticker on which the description items are to be changed and pasting them on the nameplate 2. 100 in FIG. 1 is an example of a seal in which such description items are described. When there are a plurality of changed portions, the seal may be a separate seal for each changed portion, or may be an integrated seal that describes all the changed portions on one sheet. The seal 100 is an example of an integrated seal. Further, the nameplate cover 1 covering the visual recognition part 3a of the watt-hour meter in this way is necessary for the nameplate 2 itself because the nameplate cover 1 can have a protective function for the visual recognition part 3a, which the conventional nameplate has. It is possible to reduce the thickness and strength.

  In the present embodiment, the nameplate cover 1 is formed so as to substantially conform to the outer shape of the front surface of the watt hour meter body 7 including the display unit 3, and is used for setting disposed at the upper front portion of the watt hour meter body 7. The switch 6 can be covered. In other words, the nameplate cover 1 of this embodiment has a structure integrated with the sealing cover of the conventional setting switch 6. Accordingly, since it is not necessary to separately attach the nameplate cover 1 and the sealing cover of the setting switch 6 to the watt-hour meter body 7 and seal them, workability at the time of attachment can be improved. However, as will be described later, the nameplate cover 1 of the present invention does not necessarily cover the setting switch 6. The nameplate cover 1 can be integrally molded as a whole with, for example, a transparent resin material having electrical insulation. Note that an opening 8 is formed in the nameplate cover 1 at a position corresponding to the hole 5 of the nameplate 2 so as not to hinder the operation of the operation buttons.

  The nameplate cover 1 of the present embodiment includes a sealing portion 9 for sealing the nameplate cover 1 attached to the front surface of the watt hour meter body 7. The sealing part 9 can surely prevent an unspecified third party from removing the nameplate cover 1, and thus the items described on the nameplate 2 can be reliably protected. In the present embodiment, the sealing portion 9 includes a hole 9a for allowing a predetermined sealing screw 10 to pass therethrough and a protruding portion 9b disposed adjacent to the hole 9a. As shown in FIG. 1, the sealing screw 10 is configured to be screwed into a screw hole 11 formed on the front surface of the watt hour meter body 7, and has a through hole 12 extending radially in the screw head. doing. After the sealing screw 10 is screwed into the screw hole 11, a sealing line (not shown) is passed through the through hole 12 and the opening portion 13 formed in the protruding portion 9 b to bind them. Thereby, the nameplate cover 1 can be sealed.

  The nameplate cover 1 according to the present embodiment is detachable from the watt hour meter body 7. In FIG. 2, the attachment / detachment mechanism of the nameplate cover 1 and the watt-hour meter main body 7 is shown. As shown in FIG. 2, the nameplate cover 1 has a side wall 71 disposed below the display unit 3 of the watt hour meter body 7, and is formed on the watt hour meter body 7 on the inner side of the side wall 71. A protrusion 73 that can be inserted into the groove 72 is provided. By inserting the protrusion 73 into the groove 72, the nameplate cover 1 can be positioned with respect to the watthour meter main body 7. Further, the nameplate cover 1 can be fixed to the watt hour meter body 7 by screwing the sealing screw 10 into the screw hole 11 of the watt hour meter body 7. Therefore, for example, when it is necessary to change the description on the nameplate, the nameplate cover 1 can be easily attached to and detached from the watt-hour meter body 7. The attaching / detaching mechanism for the nameplate cover 1 and the watt hour meter body 7 is not limited to that shown in FIG.

  FIG. 3 is a diagram illustrating attachment of the outer cover 20 to the nameplate cover 1. The external cover 20 can be attached as an option on the front surface of the watt hour meter body 7 so as to eliminate this gap when a large gap is formed between the display unit 3 of the watt hour meter and the switchboard door (not shown). The configuration is substantially the same as the configuration of the conventional outer cover.

  The nameplate cover 1 of the present embodiment can have an attachment portion for the outer cover 20. For example, as shown in FIG. 3, the nameplate cover 1 includes grooves 75 on the left and right side walls 74 (only one is shown in FIG. 3) among the side walls arranged around the display unit 3. It is possible to fix the outer cover 20 to the nameplate cover 1 by inserting the protrusions 25 formed inside the left and right side walls 24 of the outer cover 20 into the groove 75 (in other words, snap-fit type). it can. Thus, since the external cover 20 can be fixed to the nameplate cover 1, the height of the switchboard door is adjusted using the external cover 20 with the nameplate cover 1 attached to the watt hour meter body 7. Is possible. Moreover, it becomes possible to remove the nameplate cover 1 in a state where the external cover 20 is attached, and the work efficiency when the nameplate cover 1 is attached and detached can be improved. In addition, the attachment structure of the nameplate cover 1 and the external cover 20 is not restricted to what is shown in FIG.

  As described above, in the present invention, the nameplate cover 1 does not necessarily cover the setting switch 6, but in this case, a sealing cover for the setting switch 6 is necessary separately from the nameplate cover 1. It becomes. FIG. 4 shows an example of the sealing portion 9 of the nameplate cover 1 when a separate sealing cover 30 is used for the setting switch 6. In this example, the nameplate cover 1 is extended in a region where the setting switch 6 does not interfere with the sealing cover 30 and the sealing portion 9 is formed in the extension portion 1a. Similar to the sealing portion 9 of the above-described embodiment, the sealing portion 9 has a hole 9a for allowing the sealing screw 10 to pass therethrough and a protruding portion 9b disposed adjacent to the hole 9a. A screw hole for the sealing screw 10 is formed in a portion corresponding to the extension 1a in the watt-hour main body 7. The sealing cover 30 of the setting switch 6 is formed with a hole (not shown) for passing a predetermined sealing screw 31 and a protrusion 32 disposed adjacent to the hole.

  INDUSTRIAL APPLICABILITY The present invention can be widely applied as a cover for protecting the items described on the nameplate of a watt-hour meter based on charge transactions or certification.

DESCRIPTION OF SYMBOLS 1 Nameplate cover 1a Extension part 2 Nameplate 3 Display part 3a View part 4 Window part 5 Hole 6 Setting switch 7 Electric power meter body 8 Opening 9 Sealing part 9a Hole 9b Protrusion part 10 Sealing screw 11 Screw hole 12 Through hole 30 For setting Switch seal cover 31 Seal screw 32 Projection 13 Opening 20 External cover 24 Side wall 25 Projection 71 Side wall 72 Groove 73 Projection 74 Side wall 75 Groove 100 Seal

Claims (4)

A nameplate cover attached to the front surface of the watt hour meter main body, wherein the front surface of the watt hour meter body includes a visual recognition portion where a measured value is visually recognized and covers the visual recognition portion so as to be visible. A nameplate displaying predetermined description items is attached to the front surface of the watt-hour meter main body, and the nameplate cover is formed of a transparent member covering at least the visual recognition part and the nameplate, A nameplate cover having a sealing part for sealing the nameplate cover.   The watt-hour meter body is a watt-hour meter with a transformer, and includes a setting switch for setting a predetermined item related to the transformer, and the nameplate cover includes the setting switch. The nameplate cover according to claim 1, wherein the nameplate cover can be covered.   The nameplate cover according to claim 1, wherein the nameplate cover is detachable from the power meter main body.   Furthermore, the nameplate cover as described in any one of Claims 1-3 provided with the attaching part for attaching an external cover.

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