JP4943903B2 - Electronic gas meter - Google Patents

Description

  The present invention relates to an electronic gas meter, and more particularly to an electronic gas meter that is installed in a house or the like and can be attached with peripheral devices.

  Conventionally, an electronic gas meter (also called a microcomputer meter) with a communication function has been installed in a residential house, etc., and it has been incorporated into a centralized monitoring system to monitor the use of gas in each electronic gas meter and the presence or absence of gas leaks. Yes.

  The communication function of an electronic gas meter may be provided by attaching a communication device such as an NCU (network control device) to the gas meter body. In particular, when a retrofitted facility is installed to provide a communication function for an installed gas meter, (1) a communication device is attached to the gas meter main body, or (2) a pipe extending from a wall or ground away from the gas meter main body. A communication device is attached to a position separated from the gas meter main body, such as several types of holding members fixed to the material, and the two are connected by a wiring material (cable).

  In addition to the communication devices listed here, other peripheral devices may be installed outside the electronic gas meter, taking into consideration the space limitations, aesthetics, ease of inspection, etc. of the electronic gas meter. Various attachment methods have been proposed.

  With regard to the mounting method of (1) above, for example, in Patent Document 1, an engagement portion to which a T-NCU (terminal network control device) is mounted is provided on the side surface of the gas meter, and is not penetrated downward. There has been disclosed a gas meter provided with a convex portion provided with a female screw. In this gas meter, the peripheral device is attached by providing a screw hole on the peripheral device side and screwing it to the female screw on the convex portion on the gas meter main body side through the screw hole.

Further, Patent Literature 2 discloses a gas meter reporting device fixture that is formed of a plate-like body that is bent in a substantially L shape and has a horizontal portion and a vertical portion, and is attached to the side surface of the gas meter. . This fixture has a fitting portion that is supported by being fitted to the base of the gas meter in the horizontal portion, and a fitting portion for the gas meter reporting device is provided in the vertical portion. As this fitting part, the fitting hole fitted to a nozzle | cap | die or the notch part opened to the side part of a horizontal part is employ | adopted.
Japanese Patent No. 3581440 Japanese Patent No. 3720482

  When the mounting method (1) is adopted, in the structure described in Patent Document 1, a female screw must be provided in the gas meter main body, and some models cannot be retrofitted.

  Further, in the structure described in Patent Document 2, when a fitting hole is employed, it cannot be retrofitted without removing the pipe after connecting the gas pipe. On the other hand, peripheral equipment cannot be firmly fixed unless a recess for attaching a screw is provided in advance in the side wall of the gas meter body, especially when notches are used to accommodate retrofitting after gas pipe connection. Some models cannot be retrofitted.

  On the other hand, when the peripheral device is installed at a position separated from the electronic gas meter main body as described in (2) above, labor and cost are required. For example, when a method of installing on a wall is adopted, a long wiring material, connection and wiring work are required in conjunction with the installation work of peripheral devices, which takes time and cost. In addition, when the method using the holding member fixed to the piping material is adopted, the wiring material can be short, but the number of parts is increased because of the combination of various types of holding members, which also requires labor and cost.

  The present invention has been made in view of the above circumstances, and is an electronic gas meter that can cope with the case where peripheral devices are retrofitted, and that can reduce the cost and the mounting work by reducing the number of mounting parts. The purpose is to provide

In order to solve the above-described problems, a first technical means of the present invention is an electronic gas meter provided with a peripheral device mounting plate for mounting a peripheral device on a side portion, and the gas in the electronic gas meter is Both ends of the U-shaped bolt in a state where the mouth part on the inlet side or the mouth part on the outlet side is sandwiched between a U-shaped bolt and a peripheral device mounting plate having holes for inserting both ends of the U-shaped bolt. The peripheral device mounting plate is fixed to the side portion of the electronic gas meter by attaching a nut to each, and the peripheral device mounting plate sandwiches the inlet side cap portion as a hole for the U-shaped bolt. A common hole used when sandwiching the base part on the outlet side and the outlet side, another hole used when sandwiching the base part on the inlet side, and the base part on the outlet side Other used for In the first hole, in which is characterized in that it is provided a total of 3 holes.

  According to a second technical means, in the first technical means, an elastic body is sandwiched between the base portion and the peripheral device mounting plate, and the peripheral device mounting plate and the base are utilized by utilizing an elastic force of the elastic body. It is characterized by tightening between the two parts.

  According to the present invention, in an electronic gas meter, it is possible to cope with a case where peripheral devices are retrofitted, and it is possible to reduce costs and reduce mounting work by reducing the number of mounting parts.

  FIG. 1 is an external view showing an example of the configuration of an electronic gas meter according to an embodiment of the present invention. FIG. 1 (A) is a front view, and FIG. 1 (B) is viewed from the direction B in FIG. FIG. 2 is a top view of the electronic gas meter of FIG. 1, and FIG. 3 is an exploded top view for explaining a peripheral device mounting method in the electronic gas meter of FIGS.

  An electronic gas meter (hereinafter simply referred to as “gas meter”) according to the present invention is provided with a peripheral device mounting plate 21 for mounting the peripheral device 20 on the side of the main body 10.

  The peripheral device mounting plate 21 may have a flat plate shape, and by attaching a mounting portion to the peripheral device 20 in an appropriate position according to the shape of the peripheral device 20 or the like, both can be fixed. In the illustrated example, a screw hole or the like is made in the peripheral device mounting plate 21 and is screwed by a screw 22 through a screw hole provided in the peripheral device 20, whereby the peripheral device 20 is fixed to the peripheral device mounting plate 21. Has been.

  The peripheral device mounting plate 21 and the gas meter main body 10 are fixed by the U-shaped bolts 14 and the nuts 15 at both ends thereof. More specifically, in each member as shown in FIG. 3, the cap 11 of the gas meter 1 is sandwiched between the U-shaped bolt 14 and the peripheral device mounting plate 21 (the sandwiched state). The peripheral device mounting plate 21 is fixed to the side portion of the gas meter 1 by attaching the nuts 15 to both ends. After fixing, it becomes as shown in FIG. Note that FIG. 2 shows a view with the union 13 removed in order to make the mounting structure easy to see.

  Here, the peripheral device mounting plate 21 is provided with holes 21a and 21b for inserting both ends of the U-shaped bolt 14 at the upper side in FIG. 1, and these holes 21a and 21b are inserted when the base part 11 is sandwiched. Are inserted in a state where both ends of the U-shaped bolt 14 are inserted.

  Further, as shown in the figure, a long nut 15 may be screwed into the U-shaped bolt 14 for positioning the peripheral device mounting plate 21. Further, a union 13 is connected to the base part 11, and the curved portion of the U-shaped bolt 14 is inserted into an exposed part of the base part 11 from the union 13, and the opposite side (both ends of the U-shaped bolt 14 are connected). The peripheral device mounting plate 21 is arranged on the side), the base 11 is sandwiched, and the nut 15 is fixed.

  In this manner, the peripheral device mounting plate 21 and the peripheral device 20 mounted thereon can be fixed to the base portion 11 by sandwiching the base portion 11 of the gas meter 1 between the U-shaped bolt 14 and the peripheral device mounting plate 21. The peripheral device 20 can be installed in the immediate vicinity of the gas meter 1. In addition, when the peripheral device 20 is retrofitted, it can be handled without being removed from the gas pipe regardless of the shape of the existing gas meter 1. Further, the peripheral device 20 can be easily and quickly attached to the immediate vicinity of the gas meter 1 by the structure as described above, so that the mounting work can be reduced, the number of wires and assembly parts can be reduced, and the cost can be reduced.

  Further, as illustrated in FIGS. 1 to 3, an elastic body 17 such as a rubber member or a sheet metal elastic member is sandwiched between the base portion 11 and the peripheral device mounting plate 21, and the elastic force of the elastic body 17 is used. Then, it is preferable to perform tightening between the peripheral device mounting plate 21 and the base 11, that is, tightening between the peripheral device mounting plate 21 and the curved portion of the U-shaped bolt 14.

  When a rubber member is employed, the elastic body 17 may have a curved surface with one surface combined with the base 11 as shown in the figure, or may be a simple rectangular parallelepiped or a cube. Moreover, the shape is not ask | required also when other elastic members, such as a sheet metal, are employ | adopted. As the elastic body 17, an elastic body having a length longer than the distance from the base portion 11 when the peripheral device mounting plate 21 is fixed is used, and the elastic force is applied to the peripheral device mounting plate 21 and the base portion 11. be able to.

  Thus, by providing the elastic body 17 and fastening the peripheral device mounting plate 21 and the base portion 11 with the elastic force of the elastic body 17, the peripheral device mounting plate 21 is prevented from moving in the vertical, horizontal, and front-rear directions, and is fixed stably. Can be improved.

  Further, as shown in FIG. 1, some gas meters 1 have a structure in which an explanation card 18 that clearly indicates the operation is built in and can be pulled out to the left and right so that it can be read from the front of the main body 10. Therefore, it is required that the peripheral device 20 be installed on the opposite side of the explanation card 18.

  Actually, such an explanatory card 18 is pulled out to the left side when the right side of the gas meter 1 is a wall, for example, and pulled out to the right side when it is reversed, so that the drawing direction can be changed depending on the situation of the installation place. The peripheral device 20 is required to be attachable on either side depending on the attachment position of the explanation card 18. In addition, even a gas meter that does not include the explanatory card 18 may have a mounting space on only one of the left and right side surfaces, and is required to be mounted on either side surface.

  Therefore, it is preferable that the base part sandwiched by the U-shaped bolt 14 is not limited to the base part 11 on the gas outlet side of the gas meter 1 but may be the base part 12 on the inlet side.

  In order to enable attachment to both the base parts 11 and 12, the peripheral device mounting plate 21 serves as a hole (hole) for the U-shaped bolt 14 when the inlet part 14 is sandwiched between the inlet part and the outlet part. One common hole 21b that is commonly used when sandwiching the portion 11, another one hole 21c that is used when sandwiching the inlet-side cap portion 12, and another one hole that is used when sandwiching the outlet-side cap portion 11 21a may be provided with a total of three holes.

  For example, the common hole 21b may be provided in the center of the peripheral device mounting plate 21, and the holes 21a and 21c may be provided one by one symmetrically from the hole 21b. Then, by replacing the left and right holes used around the central hole 21b, it can be attached to either the inlet side or the outlet side of the gas meter.

  More specifically, as shown in FIG. 4, the peripheral device mounting plate 21 and the peripheral device 20 are fixed to the right side of the gas meter body 10 in the drawing, or the peripheral device mounting plate 21 and the peripheral device 20 are fixed to the left side of the drawing. It is also possible. In the former case, both ends of the U-shaped bolt 14 may be inserted into the holes 21a and 21b and fixed with the nut 15. In the latter case, both ends of the U-shaped bolt 14 are inserted into the holes 21b and 21c and fixed with the nut 15. do it. Then, the peripheral device mounting plate 21 can be moved from one side surface to the other side surface while the peripheral device 20 is mounted.

  In addition, although the explanation has been made on the assumption that the outer diameters of the outlet and inlet mouthpieces 11 and 12 are the same, even when the outer diameters are different, the U-shaped bolts 14 for the outlet and the inlet that match the respective diameters. And holes 21a and 21c may be provided at positions spaced from the common hole 21b so as to match the diameter.

It is an external view which shows one structural example of the electronic gas meter which concerns on one Embodiment of this invention. It is a top view of the electronic gas meter of FIG. FIG. 3 is an exploded top view for explaining a peripheral device mounting method in the electronic gas meter of FIGS. 1 and 2. FIG. 4 is a top view for explaining another example of a peripheral device mounting method in the electronic gas meter of FIGS. 1 to 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electronic gas meter (gas meter), 10 ... Gas meter main body, 11 ... Outlet side cap part, 12 ... Inlet side cap part, 13 ... Union, 14 ... U-bolt, 15 ... Nut, 16 ... Long nut , 17 ... elastic body, 18 ... explanatory card, 20 ... peripheral device, 21 ... peripheral device mounting plate, 21a, 21b, 21c ... hole, 22 ... screw.

Claims (2)

An electronic gas meter provided with a peripheral device mounting plate on the side for mounting peripheral devices,
In a state where the base part on the gas inlet side or the base part on the outlet side of the electronic gas meter is sandwiched between a U-shaped bolt and a peripheral device mounting plate having holes for inserting both ends of the U-shaped bolt. , By attaching nuts to both ends of the U-shaped bolt, the peripheral device mounting plate is fixed to the side of the electronic gas meter ,
The peripheral device mounting plate, as the U-shaped bolt hole, has one common hole that is commonly used when sandwiching the inlet-side base part and the outlet-side base part, and the inlet An electronic gas meter characterized in that a total of three holes are provided, one other hole used when sandwiching the base part on the side and the other hole used when sandwiching the base part on the outlet side .   An elastic body is sandwiched between the base portion and the peripheral device mounting plate, and tightening is performed between the peripheral device mounting plate and the base portion using an elastic force of the elastic body. Item 2. An electronic gas meter according to Item 1.

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