JP2005210900A - Label mounting structure of switchboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of label mounting of the switchboard which can observe its inside by eliminating the necessity for opening a door. <P>SOLUTION: A display part 14 of each unit of the control center is constituted by a holder part 15 provided in the front surface of the door 13 and a label 34 inserted into this holder part 15. The holder part 15 shows a frame shape having an opening part 15a in the front surface part. The door 13 is provided with a peep window 31 positioned in the frame of the holder part 15 for peeping through the switchboard, the label 34 is arranged so as to be inserted into the holder part 15 in a manner as closing the inspection window 3l. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a label mounting structure that is provided on a door surface of a switchboard and displays the names of devices arranged in the switchboard.

  Generally, what is called a nameplate is attached to the front of the switchboard door, and the type and rating of the load and the equipment stored in the switchboard, as well as the items necessary for maintenance and inspection, etc. Is displayed.

  In such a nameplate, as shown in FIG. 7, for example, necessary items are described on a paper label 1, and the label 1 is inserted into a holder portion 3 formed on the front surface of the door 2 of the switchboard. There is something that is configured by. In this case, the label 1 is covered with a transparent cover 4 and inserted into the holder portion 3 in order to protect the display written on the front surface from dirt and the like.

  By the way, the door 2 of the switchboard is interlocked with a device inside the switchboard, for example, a switch, so that the door 2 cannot be opened when the switch is in a closed state, that is, when the load is energized. Yes. Therefore, when opening the door 2 for maintenance / inspection of internal equipment, the power supply path to the load must be temporarily interrupted by opening the switch etc., so that the door 2 is not opened. It has been desired to be able to observe the inside of the switchboard.

  This invention is made | formed in view of the said situation, The objective is to provide the label mounting structure of the switchboard which can enable observation inside the switchboard without opening a door.

  The present invention is provided with a holder portion having a frame shape in which a label is detachably inserted in a door of the switchboard, and provided with a viewing window for looking into the inside of the switchboard located within the frame of the holder portion, The label is inserted into the holder portion so as to close the viewing window.

  In addition, the present invention provides an opening that is located in the frame of the holder part and communicates with the switchboard among the doors of the switchboard. It is characterized in that it is inserted into the holder part with a thermochromic material whose color changes.

According to the present invention, by removing the label from the holder portion, it is possible to monitor devices such as a switch housed in the switchboard from the viewing window without opening the door. Inspection becomes easy.
Further, the abnormality inside the switchboard can be known from the change in the color of the thermochromic material provided corresponding to the opening.

Several embodiments in which the present invention is applied to a switchboard configured as a control center will be described below with reference to FIGS.
First, a first embodiment will be described with reference to FIGS. FIG. 1 shows the overall configuration of the control center 11, which is composed of a plurality of units 12 in which electromagnetic switches, wiring breakers and the like (not shown) are grouped for each unit circuit.

  Each unit 12 is incorporated in a closed box, and a door 13 is provided on the front surface. An interlock is provided between the door 13 and the electromagnetic switch or the like in the unit 12, and the door 13 cannot be opened when the electromagnetic switch or the like is in a closed state, that is, when a load is energized. It is configured as follows. In addition, a display portion (name plate) 14 for displaying the type, rating, and type of the devices arranged in each unit 12 is provided in the lower right part of the front surface of the door 13 of each unit 12. .

  As shown in FIG. 2, the display unit 14 is configured by detachably inserting, for example, a paper label 16 in which necessary items are described in a holder unit 15. The holder portion 15 has a horizontally long rectangular frame shape having a rectangular opening portion 15a on the front surface, and has an inlet / outlet port 15b through which the label 16 is put in and out.

Further, a rectangular viewing window 31 is formed in the door 13 so as to be positioned within the frame of the holder portion 15. In this case, as shown in FIG. 3, the holder portion 15 is located at a position where the operation state and mounting state of the electromagnetic switch 32 and the overload relay 33 disposed inside the unit 12 can be confirmed from the viewing window 31. Is provided.
On the other hand, as shown in FIG. 2, the label 16 is configured to cover the front surface thereof with a cover 34 formed of, for example, transparent plastic. In this case, the label 16 and the cover 34 are substantially the same size and are larger than the viewing window 31.

  According to such a configuration, since the label 16 can be taken out from the holder portion 15 and the inside of the unit 12 can be looked into from the viewing window 31, the operation of the electromagnetic switch 32 and the overload relay 33 even during energization. You can check the state and mounting state. Accordingly, maintenance and inspection can be performed without stopping the load by opening the electromagnetic switch 32 and the like, and workability is improved.

  FIG. 4 shows a second embodiment of the present invention, which differs from the first embodiment in the following points. First, the label 41 is a transparent sheet made of, for example, a plastic film whose front surface is an adhesive surface, and is attached to the cover 34. A sheet 42 formed of a photochromic material that changes to transparent when a predetermined light (for example, ultraviolet rays) is irradiated on the back side of the label 41 is arranged and inserted into the holder portion 15. . The sheet 42 is usually white, for example.

When it is desired to perform maintenance / inspection inside the unit 12, the display unit 14 is irradiated with predetermined light (for example, ultraviolet rays) to change the sheet 42 to be transparent. Then, the observation window 31 that is normally hidden behind the sheet 42 can be seen from the outside through the transparent sheet 42, the label 41, and the cover 34. Accordingly, it is possible to look into the inside of the unit 12 from the viewing window 31 without removing the label 41 or the like from the holder portion 15 and to confirm the operation state or attachment state of the internal electromagnetic switch 32 or the like.
Instead of using the label 41 and the sheet 42 as separate members, the label itself can be formed of a photochromic material.

  FIG. 5 shows a third embodiment of the present invention, which differs from the first embodiment in the following points. That is, the holder 51 is configured such that the label 51 is inserted and inserted into the file 17. The file 17 is formed by folding a thin plate made of a transparent plastic such as acrylic or vinyl chloride, for example, and has a restoring force to spread due to elasticity when no external force is applied. Further, the file 17 has a size that fits within the frame of the holder portion 15 in a folded state.

  When the label 51 is held by the holder unit 15, the label 51 is sandwiched in the file 17 with the fold line on the bottom, and the file 17 is held in a folded state so that it is fully inserted into the holder unit 15 from the entrance / exit 15 b. To. Then, since the file 17 tends to spread due to its restoring force, the file 17 having the label 51 is held in the holder portion 15 with a relatively large force.

Therefore, even if an external impact is applied to the display unit 14, the file 17 is hardly displaced or detached from the holder unit 15. As a result, it is possible to effectively prevent the label 51 in the file 17 from being removed.
Further, since no special means is required to fix the file 17 to the holder portion 15, the file 17 can be easily attached and detached. Therefore, when it is desired to exchange the label 51 in order to change the display on the display unit 14, the file 17 and the label 51 can be easily removed from the holder unit 15 by pulling out while returning the spread of the file 17. .

On the other hand, the label 51 is formed of a transparent material, and the back surface portion of the file 17 located on the back side of the label 51 (that is, the door 13 side) is subjected to a temperature change. A thermochromic material P that changes color is applied. The door 13 of the unit 12 is formed with a rectangular opening 52 that is located within the frame of the holder portion 15 and communicates with the inside of the unit 12.
Therefore, when the file 17 with the label 51 sandwiched is inserted into the holder portion 15, the opening 52 is blocked by the surface of the file 17 to which the thermochromic material P is applied, and the opening 52 The air inside the unit 12 comes into contact with the thermochromic material P through the air.

  Here, as the thermochromic material P, for example, a temperature indicating paint used for a paper thermometer or the like is used. In this case, the temperature indicating paint is white when the temperature is about 40 ° C. or lower, gradually changes color as the temperature inside the unit rises, and red when it exceeds about 65 ° C. In normal times, the temperature inside the unit 12 is about 40.degree. C. Generally, when the temperature exceeds 105.degree. C., the equipment arranged inside the unit 12 is assumed to break down.

  According to such a configuration, it is possible to determine whether or not an abnormality has occurred in the equipment in the unit 12 by appropriately checking the color of the thermochromic material P applied to the file 17. Therefore, there is no need to open the door 13 for maintenance / inspection of equipment in the unit 12, which is convenient. Moreover, since the temperature at which the thermochromic material P changes to red is set lower than the temperature at which the equipment inside the unit 12 fails, it is possible to prevent the equipment from being broken.

  In this case, it is needless to say that the opening 52 can be used as a viewing window. Further, instead of the configuration in which the label 51 is sandwiched between the files 17, a thermochromic material P is applied to the back surface of the label 61 as in the fourth embodiment shown in FIG. You may make it insert in the holder part 15. FIG. Also in this case, the same effect as the third embodiment can be obtained.

The perspective view which shows the 1st Example of this invention and shows the whole structure of a control center roughly The exploded perspective view which shows a mode that a label and a file are inserted in a holder part The perspective view which shows a mode that the unit door of the control center was opened. FIG. 2 equivalent view showing a second embodiment of the present invention FIG. 2 equivalent view showing a third embodiment of the present invention. FIG. 2 equivalent view showing a fourth embodiment of the present invention. FIG. 2 equivalent diagram showing a conventional example

Explanation of symbols

  In the figure, 11 is a control center (distribution panel), 13 is a door, 15 is a holder part, 34, 41, 51 and 61 are labels, 32 is an electromagnetic switch, 33 is an overload relay, and 42 is a sheet (photochromic material). , P represents a thermochromic material.

Claims (3)

In the label mounting structure provided on the front of the switchboard door that has a switch inside
The door is provided with a holder portion having a frame shape into which the label is detachably inserted, and a viewing window is provided in the holder portion to look inside the switchboard,
A label mounting structure for a switchboard, wherein the label is inserted into the holder portion so as to close the viewing window.   2. The label is formed of a transparent material, and is inserted into the holder portion with a photochromic material that changes to transparent when irradiated with predetermined light on the back side thereof. The label mounting structure of the switchboard described. In the label mounting structure provided on the front of the switchboard door that has a switch inside
The door is provided with a holder portion having a frame shape into which the label is detachably inserted, and an opening portion is provided in the frame of the holder portion to communicate with the switchboard,
A label mounting structure for a switchboard, wherein a label formed of a transparent material is inserted into the holder portion in a state where a thermochromic material whose color changes according to a temperature change is arranged on the back side thereof .

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