JP3729753B2 - Power distribution equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a power distribution device provided with a cover and a nameplate that covers a power distribution device main body and protects the inside thereof.
[0002]
[Prior art]
Conventionally, there are watt-hour meters shown in FIGS. 1A and 1B as this type of power distribution equipment. Although both (a) and (b) are cross-sectional views of the watt hour meter, the watt hour meter is not shown.
[0003]
The watt hour meter shown in FIG. 1A is configured by covering the watt hour meter body with a cover 1. The cover 1 is entirely open on the front surface, and the transparent window 2 having a cross-section of a “U” shape closes the opening of the cover 1. Predetermined contents written on the surface 3 a of the nameplate 3 are visually recognized through the transparent window portion 2.
[0004]
Moreover, the watt-hour meter shown to the same figure (b) is comprised by the cover 4 covering the watt-hour meter main body. A part of the front surface of the cover 4 is opened, and a flat transparent window portion 5 closes the opening portion of the cover 4 from the inside. The predetermined description described on the surface 3 a of the nameplate 3 is visually recognized through the transparent window 5 facing the opening of the cover 4.
[0005]
On the nameplate 3 of the watt-hour meter, the description content stipulated by laws and regulations is written. In general, the contents of this description include those that do not change for the same type of instrument and those that change depending on the rating and production. The content of the former is printed on the nameplate when it is manufactured, and the content of the latter is stamped in the watt-hour manufacturing process. In the case of an aluminum nameplate, this engraving is printed in black on the stamped portion, and this printed paint is peeled off by mechanical stamping or laser irradiation, so that aluminum characters appear in the black printed paint. Usually done. However, a description using a stamp using immortal ink or a sticker on which a description item is printed may be engraved.
[0006]
Since the nameplate 3 of the watt-hour meter used for trading and proof is covered with the covers 1 and 4 and the transparent windows 2 and 5 in this way, the description cannot be changed from the outside. In addition, it is prevented from becoming unrecognizable due to ultraviolet rays, secular change, and the like.
[0007]
[Problems to be solved by the invention]
With the recent increase in awareness of global environmental issues, there is a need for finely managing the consumption of electric power energy. However, power distribution devices for managing this, such as watt-hour meters, have limitations in terms of their physical size to be attached to all existing distribution boards and mechanical equipment. Accordingly, there is an urgent need to reduce the size of power distribution equipment itself such as a watt-hour meter, and at the same time, there is a demand for cost reduction of the power distribution equipment product price.
[0008]
[Means for Solving the Problems]
The present invention has been made in order to solve such a problem, and in a power distribution device including a nameplate on which a predetermined description is written and a cover that covers the power distribution device body and protects the inside thereof , nameplate is formed of a transparent member, are notation description on the back surface, covers the power distribution apparatus body surface thereof together with the cover, the description, the description does not change as long as the same type instrument In addition, there are descriptions that vary depending on the rating and production, and descriptions that do not change with the same type of instrument are printed on the nameplate when printed, and descriptions that vary depending on the rating and production are formed on the back of the nameplate when manufacturing power distribution equipment. been coated film is characterized in that it is labeled is engraved is partially peeled off by laser irradiation.
[0009]
According to such a configuration, the nameplate is attached integrally with the cover and covers and protects the main body of the power distribution device together with the cover, so that it also functions as a conventional transparent window portion. As a result, the transparent window, which has conventionally been indispensable as one of the components of the cover, is unnecessary. Moreover, since the description content of a nameplate is described on the back surface, only the manufacturer of an electric power distribution apparatus can touch the description part. Also, description has a marking which paint films from nameplate backside by laser irradiation is peeled, is performed by printing and, wherein the content unchanged if the same type instrument is denoted by printing during nameplate production, by rating and production The changed description is described by partially peeling off the coating film formed on the back surface of the nameplate at the time of manufacturing the power distribution device and engraving it by laser irradiation. In this case, dirt such as burn marks generated on the nameplate by peeling off the coating film on the backside of the nameplate by laser irradiation occurs on the back surface.
[0012]
Further, according to the present invention, the cover of the part to which the nameplate is attached has a black color and a color that can be distinguished from the white color paint film, and the paint film is peeled off. The color of the cover is visually recognized as a stamp from the portion.
[0013]
According to such a configuration, the inscription is not expressed by the color of the nameplate material as in the prior art, but by the color of the cover.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment in which the power distribution device according to the present invention is applied to a watt-hour meter will be described.
[0015]
FIG. 2 is a cross-sectional view of the watt hour meter according to the present embodiment, and the watt hour meter main body is not shown.
[0016]
The watt-hour meter of this embodiment is configured by covering the watt-hour meter body with a cover 11. The cover 11 is molded from a black plastic material, and the shape of the cross section thereof is formed in a substantially H shape. Further, the cover 11 has a meter viewing hole 11a opened in a rectangular shape for visually recognizing the electric energy value on the front surface.
[0017]
A name plate 13 shown in FIG. 3 made of a transparent plastic plate is fitted into the concave portion of the front surface of the cover 11 from the outside so as to cover the meter visual recognition hole 11a and cannot be removed. The fitting is such that a rectangular thick frame 13a at the center of the nameplate 13 coincides with the meter visual recognition hole 11a, and the electric energy value is visually recognized in the thick frame 13a. The cross section shown in FIG. 2 appears when the cover 11 is broken along the line AA shown in FIG. The peripheral portion of the nameplate 13 around the thick frame 13a is in contact with the concave portion on the front surface of the cover 11 except for the portions of the two small corner frames 13b and 13c and the one small round frame 13d, and the black surface of the cover 11 can be seen. The cover 11 in the portions of the small-angle frames 13b and 13c and the small-circle frame 13d has a hole, and the small-angle frame 13b visually recognizes a flashing display of liquid crystal indicating that it is in operation when the watt-hour meter is being measured. In 13c, a lit display of the liquid crystal indicating that the watt-hour meter is in a standby state is visually recognized. In addition, a measurement pulse appears as light emission of the infrared light emitting diode in the small round frame 13d.
[0018]
On the back surface 13 e of the nameplate 13, the description content stipulated by laws and regulations is written in a reverse letter shape. The description on the nameplate 13 does not change if it is the same type of instrument, for example, instrument name 13f, instrument constant 13g, “model” 13h, “annual” 13i, etc. For example, there are an examination year 13j, a frequency 13k, a production number 13l, a production year 13m, and a pulse constant value 13n.
[0019]
The former description contents 13f to 13i are printed with white paint when the nameplate is manufactured. In the latter description 13j to 13n, a white printed coating film is formed on the stamped portion indicated by a frame in the figure when the nameplate is manufactured, and then a part of the stamped coating film is laser-irradiated during the manufacturing process of the watt-hour meter. Is peeled off into the back letter shape and stamped. As a result, the description contents 13f to 13i written in white with the black background of the cover 11 and the description contents 13e to 13i written in black as the black color of the cover 11 emerges from the white coating film.
[0020]
According to the watt hour meter according to the present embodiment, the nameplate 13 is attached integrally with the cover 11 and covers and protects the watt hour meter body together with the cover 11. 5 (see FIG. 1). As a result, the transparent window portions 2 and 5 that have been indispensable as one of the components of the cover 11 are unnecessary. For this reason, the number of parts of the watt-hour meter is reduced, and the watt-hour meter can be downsized and the product cost can be reduced. Moreover, since the description content of the nameplate 13 is described on the back surface 13e, only the manufacturer of the electricity meter can touch the described portion. For this reason, the description on the nameplate cannot be changed by anyone other than the manufacturer.
[0021]
In the conventional watt-hour meter, it is conceivable to reduce the product cost by eliminating the transparent windows 2 and 5 itself. However, in the state where the transparent windows 2 and 5 are not provided, it is directly applied to the surface 3 a of the nameplate 3. It becomes possible to engrave or stick a seal. Therefore, in such a configuration, it is not possible to distinguish whether the description on the nameplate 3 is affixed by the manufacturer, affixed by the user, or affixed by a third party, and is used for transactions and certification. It becomes a fatal defect for the watt-hour meter. However, in the above-described watt-hour meter of this embodiment, the watt-hour meter can be reduced in size and cost can be achieved without causing such a defect.
[0022]
In this embodiment, the nameplate 13 is engraved by peeling a part of the coating film on the backside 13e from the nameplate backside 13e by laser irradiation. However, the nameplate 13 is irradiated with the laser on the backside 13e. Dirt such as burn marks may occur. However, since dirt such as burn marks is generated on the back surface 13e of the nameplate 13, it is not directly exposed on the surface of the nameplate 13, and the dirt is not conspicuous when the description content is viewed from the surface of the nameplate 13.
[0023]
Further, the color of the molding material of the cover 11 is black, and the color of the coating film on the engraved portion in contact with the cover 11 is white. It has a distinguishable color. Therefore, the black color of the cover 11 is visually recognized as a stamp from the reverse letter shape part from which the coating film is peeled off. That is, the inscription is not expressed by the color of the nameplate material as in the prior art, but by the color of the cover 11. For this reason, even if the nameplate 13 is comprised from a transparent member, the same marking as the past can be performed.
[0024]
In the above-described embodiment, the case where the cover 11 is formed from a black material and the coating film of the nameplate 13 is formed in white has been described. However, the color of the cover 11 is raised from the peeled portion of the coating film and stamped. Can be easily visually recognized, the material used for the cover 11 and the coating film of the nameplate 13 can use any color, and the same operations and effects as in the above embodiment can be achieved.
[0025]
In the above-described embodiment, the case where the coating film is peeled off by laser irradiation and the marking is performed has been described. However, the coating film may be peeled off and stamped by mechanical marking such as engraving. Further, a stamp using immortal ink on the back surface 13e of the nameplate 13 or a sticker on which a description item is printed may be applied as an inscription. That is, the present invention can be applied in the same way as the above-described embodiment as long as it cannot be recognized due to ultraviolet rays, aging deterioration, or the like. In this case, the same operation and effect as the above-described embodiment can be achieved. The
[0026]
In the above-described embodiment, the case where the present invention is applied to a watt hour meter has been described. However, the present invention can be similarly applied to other power distribution devices such as a time switch having a cover and a nameplate. In this case as well, the same operations and effects as in the above embodiment are exhibited.
[0027]
【The invention's effect】
As described above, according to the present invention, the nameplate is integrally attached to the cover and covers and protects the main body of the power distribution device together with the cover, so that it also functions as a conventional transparent window. As a result, the transparent window, which has conventionally been indispensable as one of the components of the cover, is unnecessary. For this reason, the number of parts of the power distribution device is reduced, and the power distribution device can be downsized and the product cost can be reduced. Moreover, since the description content of a nameplate is described on the back surface, only the manufacturer of an electric power distribution apparatus can touch the description part. For this reason, the description on the nameplate cannot be changed by anyone other than the manufacturer.
[0028]
Further, to the description, to what has been printed, since the coating layer formed on the back surface of the faceplate is included as imprinted been partially peeled, wherein Contents from nameplate backside by laser irradiation This is performed by marking and printing for peeling off the coating film. In this case, dirt such as burn marks generated on the nameplate by peeling off the coating film on the backside of the nameplate by laser irradiation occurs on the back surface. For this reason, dirt such as burn marks on the back of the nameplate is not directly exposed on the surface of the nameplate, and the dirt is not noticeable when the description is visually confirmed from the surface of the nameplate.
[0029]
Also, the cover where the nameplate is attached has a black color and a color that can be distinguished from the white paint film. In the case where the color is visually recognized as an inscription, the inscription is not expressed by the color of the nameplate material as in the prior art, but by the color of the cover. For this reason, even if a nameplate is comprised from a transparent member, the same inscription can be performed.
[Brief description of the drawings]
FIG. 1A is a cross-sectional view of a conventional watt-hour meter, and FIG. 1B is a cross-sectional view of another conventional watt-hour meter.
FIG. 2 is a cross-sectional view of a watt-hour meter according to an embodiment of the present invention.
FIG. 3 is a front view of a nameplate used in the watt hour meter according to the embodiment of the present invention.
[Explanation of symbols]
11 ... Cover 11a ... Meter viewing hole 13 ... Name plate 13e ... Back side of name plate 13

Claims (2)

In a power distribution device including a name plate on which predetermined description content is written and a cover that covers and protects the inside of the power distribution device main body, the name plate is formed of a transparent member, and the description content is formed on the back surface thereof. , The surface of the power distribution device body is covered with the cover,
In the description content, there is a description content that does not change if it is the same type of instrument and a description content that changes depending on the rating and production,
If the instrument is of the same kind, the description that does not change is printed on the nameplate, and the description that changes depending on the rating and production is partially applied to the coating film formed on the back of the nameplate when the power distribution equipment is manufactured. power distribution equipment, characterized in that it is peeled are labeled is engraved. The cover of the part to which the nameplate is attached has a black color and a color that can be distinguished from the paint film that is a white color, and from the peeled part of the paint film power distribution apparatus according to claim 1, characterized in that the color of the cover is visually recognized as the marking.

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