JPH09130061A - Automatic meter reading terminal housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent intrusion of rainwater into the housing part of an electronic circuit board, and to alleviate the special restriction of the place of installation by a method wherein the hollow space on the circumference of the mounting part of a mounting member is partitioned by a barrier from the housing part of the electronic circuit board. SOLUTION: An automatic meter reading terminal housing 11 is composed of three blocks of a housing case 12, a terminal cover 13 and a board fixing stand 14, and the housing 11 is screwed up to the side wall 30 of a building through a latch 16. A watthour meter 10, which is a metering device and the objective of meter reading, is superposingly attached to the automatic meter reading terminal housing 11 by a screw 15. The hollow space around a mounting part 12 is partitioned by a barrie 12c against the housing part of an electronic circuit board 5, and an aperture is provided on the backside of the housing case 12. As a result, the installation space on the building size wall 30 becomes small, and the spacial restriction of installation can be alleviated. Also, the intrusion of rainwater into the housing part of the electronic circuit board 5 can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic meter-reading system for remotely metering the measured value of a metering device such as an electric meter in an automatic meter-reading system for electricity, gas, water, etc. using a communication line such as a telephone line. The present invention relates to a housing structure of a mobile terminal.

[0002]

2. Description of the Related Art FIG. 7 shows, for example, Shoukai 60-194876.
FIG. 6 is a perspective view showing a part of a conventional automatic meter-reading terminal shown in Japanese Patent Publication. In the figure, an automatic meter-reading terminal housing 1 is composed of a housing case 2, a terminal cover 3 and a board fixing base 4 in three blocks. An electronic circuit board 5 is fixedly housed inside the housing case 2 on a board fixing base 4. An electronic component 6 is mounted on the electronic circuit board 5 and constitutes a transmission terminal circuit of the automatic meter-reading system. In addition, the electronic circuit board 5 is connected to a power supply connected to a metering device (not shown) such as a watt hour meter and a connection lead wire 7 such as a communication line.

Further, considering that the automatic meter-reading terminal housing 1 is installed on the side wall of an outdoor building or under the eaves, the housing case 2 includes the component mounting portion 5a of the electronic circuit board 5 and the terminal portion 5b. The structure is divided so that the connecting lead wire 7 can be easily drawn in from the outside and connected. The terminal cover 3 is provided on the terminal portion 5b to shield the charging portion and prevent rainwater from entering the inside of the housing.

[0004]

In the conventional automatic meter-reading terminal configured as described above, the terminal cover 3 is provided to protect the terminal portion 5b of the electronic circuit board 5 from the outside. There is a problem that rainwater that has entered from the engaging portion between the housing case 2 and the terminal cover 3 easily reaches the electronic circuit board 5. Further, in order to prevent this, it is necessary to use a rubber packing or the like at the joint portion between the housing case 2 and the terminal cover 3 to form a watertight structure, which causes a problem of high cost. Furthermore, the automatic meter-reading terminal housing 1
Since the meter and the watt-hour meter to be metered are installed side by side on the side wall of the building, there are restrictions on the installation when the wall surface is narrow.

The present invention has been made to solve the above problems, and it is possible to easily prevent rainwater from entering the housing portion of the electronic circuit board.
Moreover, it aims at obtaining the automatic meter-reading terminal device housing which can ease the restrictions on the place of installation.

[0006]

According to a first aspect of the present invention, there is provided an automatic meter-reading terminal housing, wherein a housing case is constructed such that a weighing device is mounted on the surface of the housing case in an overlapping manner by a mounting member. The space around the mounting portion is partitioned off from the housing portion of the electronic circuit board by a partition wall.

In the automatic meter-reading terminal housing according to the second aspect of the invention, the space around the mounting portion of the mounting member is open to the back side of the housing case.

An automatic meter-reading terminal housing according to a third aspect of the present invention has an open lower surface, and an electronic circuit board of a transmission terminal circuit of an automatic meter-reading system for remotely metering a measured value from a measuring device via a communication line. Housing case, and an extension wall attached to the housing case so as to close the lower surface of the housing case and facing the inside of the front surface of the housing case. It has a board fixing base provided with an output terminal, and a cover tongue portion that is inserted between the inside surface of the housing and the extension wall,
The terminal cover is attached to the housing case and covers the input / output terminals.

According to the fourth aspect of the present invention, the automatic meter-reading terminal housing is provided with an eave wall, which is in contact with the inside of the surface of the housing case, on the extension wall.

In the automatic meter-reading terminal housing according to the fifth aspect of the present invention, a concave groove is provided on the surface of the cover tongue on the side of the housing case.

In the automatic meter-reading terminal housing according to the invention of claim 6, the concave groove of the cover tongue is inclined so as to descend toward both ends in the installed posture.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. 1 is a cross-sectional view of an automatic meter-reading terminal according to Embodiment 1 of the present invention. The same or corresponding parts as in FIG. 7 are designated by the same reference numerals, and the description thereof will be omitted.

In FIG. 1, an automatic meter-reading terminal housing 11 for housing an electronic circuit board 5 is composed of a housing case 12, a terminal cover 13 and a board fixing base 14 and is screwed to a building side wall 30 via a latch 16. It has been stopped.
The electricity meter 10, which is a metering device for meter reading, is mounted on the automatic meter-reading terminal housing 11 by screws 15 as a mounting member. A screw hole 12b into which the screw 15 is screwed is formed in the mounting portion 12a of the screw 15 of the housing case 12. The latch 16 is also screwed to the mounting portion 12a.

The space around the mounting portion 12a is partitioned by the partition wall 12c from the housing portion of the electronic circuit board 5 and is open to the back side of the housing case 12.
Therefore, when the housing case 12 is viewed from the back side, as shown in FIG. 2, an angular groove is formed by the upper side of the housing case 12 and the U-shape of the partition wall 12c, and the mounting portion 12b projects in the center thereof. ing. Further, even if the partition wall 12c is cracked in the housing case 12 around the mounting portion 12b due to stress applied to the screw 15, the partition portion 1c is located at a distance that the crack does not reach.
It surrounds the perimeter of 2b.

FIG. 3 is a sectional view showing a part of FIG. 1 in an enlarged manner. The lower surface of the housing case 12 is open, and the board fixing base 14 is provided so as to close the lower surface.
Attached to. Further, the board fixing base 14 is provided with an extension wall 14 a facing the inside of the surface of the housing case 12. Further, an eaves wall 14b, which comes into contact with the inside of the surface of the housing case 12, is formed at the tip of the extension wall 14a so as to be convexly curved. The terminal cover 13 includes a housing case 12
The cover tongue portion 13a inserted between the inside of the surface and the extension wall 14a is formed by extending a stepped portion. The board fixing base 14 is provided with input / output terminals 17 to which the connection lead wires 7 are connected.

In the automatic meter reading terminal as described above,
Since the watt-hour meter 10 can be stacked and mounted on the automatic meter-reading terminal housing 11, the installation space on the building side wall 30 can be reduced, and the restrictions on the installation location can be eased. Along with this, it is necessary to screw the screw 15 to the mounting portion 12a provided in a part of the housing case 12, and the weight of the watt-hour meter 10 is concentrated on the screw 15. However, the partition wall 1 is formed around the mounting portion 12a.
Since 2c is provided, the strength of the mounting portion 12a is reinforced.

In addition, when a crack is generated in the vicinity of the mounting portion 12a due to long-term stress or an external force applied to the protruding electric meter 10 suddenly, even if rainwater enters the crack, the partition wall The rainwater does not reach the electronic circuit board 5 by being blocked by the 12c. Further, rainwater that has entered through the cracks does not flow out from the open portion on the back surface of the housing case 12 and collect around the mounting portion 12a.
FIG. 4 is a cross-sectional view showing a state in which a crack has occurred near the mounting portion of the housing case of FIG. When a crack B occurs, the rainwater entering from the crack B is indicated by the arrow A.
As described above, the water does not enter the accommodation portion of the electronic circuit board 5 and is drained from the back portion.

Further, since the cover tongue portion 13a of the terminal cover 13 is inserted on the back side of the front surface of the housing case 12 as described above, a rainwater infiltration path from the joint between the terminal cover 13 and the housing case 12 is provided. Is longer and the infiltration of rainwater is prevented.

In addition, the eaves wall 14b, which is a part of the substrate fixing base 14, is brought into contact with the back side of the front surface of the casing case 12, so that the pressing force from the surface of the casing case 12 on the open end side can be reduced. The strength of the housing case 12 can be reinforced. Therefore, the casing case 12 and the cover tongue portion 13 are pressed by the pressing force.
It is prevented that the gap in the overlapping portion with “a” becomes large, and the infiltration of rainwater is further suppressed.

Embodiment 2 FIG. 5 is a sectional view showing a part of an automatic meter-reading terminal according to Embodiment 2 of the present invention.
In the figure, a concave groove 13b extending horizontally is provided on the surface of the cover tongue portion 13a on the side of the housing case 12 when installed on the building side wall 30. Further, when the terminal cover 13 is attached to the housing case 12, there is a gap 20 between the upper side 13c of the cover tongue portion 13a and the eaves wall 14b.

In this example, even if rainwater infiltrates between the housing case 12 and the cover tongue portion 13a by the capillary phenomenon, the rainwater has a concave groove 1 having a width in which the capillary phenomenon does not easily occur.
It is stopped by 3b and the void 20 and the infiltration of rainwater into the housing portion of the housing case 12 for the electronic circuit board 5 is suppressed. In addition,
A plurality of concave grooves 13b may be provided.

Embodiment 3 FIG. FIG. 6 is a perspective view showing a terminal cover of an automatic meter-reading terminal housing according to Embodiment 3 of the present invention. In this example, the concave groove 13b and the cover tongue 13
The upper side 13c of a is inclined so as to descend toward both ends in the installation posture.

Therefore, the housing case 12 and the cover tongue 1 are
The rainwater that enters the gap 3a by the capillarity phenomenon and stays in the gap 20 and the groove 13b flows out along the descending slope as indicated by an arrow D. Therefore, it is possible to prevent the rainwater filled in the void 20 and the concave groove 13b from entering the housing case 12.

Although the watt hour meter 10 is shown as the weighing device in each of the above-described embodiments, the weighing device is not limited to this.

[Brief description of the drawings]

FIG. 1 is a sectional view of an automatic meter-reading terminal according to a first embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a back surface of the automatic meter-reading terminal of FIG.

FIG. 3 is a sectional view showing a part of FIG. 1 in an enlarged manner.

FIG. 4 is a cross-sectional view showing a state in which a crack has occurred in the vicinity of a mounting portion of the housing case of FIG.

FIG. 5 is a sectional view showing a part of an automatic meter-reading terminal according to Embodiment 2 of the present invention.

FIG. 6 is a perspective view showing a terminal cover of an automatic meter-reading terminal housing according to Embodiment 3 of the present invention.

FIG. 7 is a partially cutaway perspective view showing an example of a conventional automatic meter-reading terminal device.

[Explanation of symbols]

5 Electronic Circuit Board, 10 Electricity Meter (Measuring Device), 11
Automatic meter reading terminal housing, 12 housing case, 12a mounting part, 12b screw hole, 12c bulkhead, 13 terminal cover, 13a cover tongue, 13b groove, 14 board fixing base, 14a extension wall, 14b eaves wall, 15 screw ( Mounting member), 17 input / output terminals, 20 voids.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000003078 Toshiba Corporation, 72 Horikawa-cho, Sachi-ku, Kawasaki City, Kanagawa Prefecture (72) Keizo Okazaki 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd. (72) Seiichi Nakata 1-3-3 Uchisaiwaicho, Chiyoda-ku, Tokyo Tokyo Electric Power Company, Inc. (72) Takashi Yokoyama 2-27, Higashigotanda, Shinagawa-ku, Tokyo Osaki Electric Industry Co., Ltd. (72) Inventor Koji Shimizu 1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd. (72) Inventor Akinori Nishi 1-1-1, Shibaura, Minato-ku, Tokyo Toshiba Head Office Co., Ltd.

Claims (6)

[Claims] 1. An automatic meter-reading terminal device housing, comprising an enclosure case for accommodating an electronic circuit board of a transmission terminal circuit of an automatic meter-reading system for remotely metering a measured value from a measuring device via a communication line, wherein: The housing case is configured such that the weighing device is mounted on the surface of the housing by a mounting member so that the space around the mounting portion of the mounting member is separated from the housing portion of the electronic circuit board by a partition wall. The automatic meter-reading terminal housing is characterized by being partitioned by. 2. The automatic meter-reading terminal housing according to claim 1, wherein a space around the mounting portion of the mounting member is open to the back side of the housing case. 3. An enclosure case having an open lower surface, in which an electronic circuit board of a transmission terminal circuit of an automatic meter reading system for remotely metering a measured value of a weighing device via a communication line is housed, and a casing case of this housing case. A board fixing base that is attached to the housing case so as to close the lower surface and that has an extension wall that faces the inside of the surface of the housing case and that holds the electronic circuit board and that is provided with input / output terminals. A terminal cover that has a cover tongue that is inserted between the inner surface of the housing case and the extension wall, and that is equipped with a terminal cover that is attached to the housing case and covers the input / output terminals. And an automatic meter-reading terminal housing. 4. The automatic meter-reading terminal housing according to claim 3, wherein an eave wall that abuts the inside of the surface of the housing case is provided on the extension wall. 5. The automatic meter-reading terminal housing according to claim 4, wherein a concave groove is provided on the surface of the cover tongue on the housing case side. 6. The automatic meter-reading terminal housing according to claim 5, wherein the concave groove of the cover tongue is inclined so as to descend toward both ends in the installation posture.