JP3133939B2 - Gas meter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas meter having a built-in terminal transmission device for transmitting data via a telephone line.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show an example of a conventional gas meter with a built-in terminal transmitting / transmitting device (Japanese Utility Model Application Laid-Open No. 6-7).
2027).

[0003] The gas flow detecting section 1 has an inflow port 2a at the upper end.
The gas that flows in and flows out of the outlet 2b is measured in the measuring chamber, and is provided at the rear of the gas meter A.
Above the gas flow detecting section 1, a mechanism section 3 for converting information based on the flow measurement of the gas flow detecting section 1 into rotation capable of displaying a flow rate is provided.

[0004] A terminal 4 provided at the front of the mechanism 3
A flow display unit 9 is provided on the front surface, and a storage operation unit that stores and calculates the measured flow rate and various necessary information is provided inside. The gas flow detector 1 is located below the terminal 4
A terminal transmission unit (NCU) 10 for transmitting data via a telephone line is provided at the front of the unit.

A cover 3 is provided on the front of the terminal transmission device 10.
The bottom plate 36 is fixed to the lower end surface with screws 37.

[0006]

In the above-mentioned conventional gas meter A, since the terminal transmission device 10 and the storage operation section in the terminal device 4 are vertically arranged in series, the overall height is the original height of the gas meter. The height H is higher than the height H by the amount of the protrusion h below the terminal transmission device 10, and there is a problem that compatibility in mounting the gas meter is deteriorated.

When the terminal transmission device 10 is replaced in the event of a failure or the like, the cover 3 of the terminal transmission device 10 must be replaced.
After removing the bottom plate 36 separate from 5 by removing the screw 37 from the lower side, it takes time and effort to replace the terminal transmission device 10, and there is a problem that the workability of the replacement is poor.

The present invention has been made in view of the above points, and is a gas meter with a built-in terminal transmission device, which can maintain the original height of the gas meter and can easily replace the terminal transmission device. It is an object of the present invention to provide an improved gas meter.

[0009]

To achieve the above object, according to the first aspect of the present invention, a mechanism is provided above a gas flow detector, and a flow indicator is provided at a front of the mechanism, respectively. A case body in which two chambers separated into front and rear are formed is attached to a lower part of a flow rate display section in front of the gas flow rate detection section, a terminal transmission device is provided in one chamber, and a storage operation for processing flow rate information. Parts are attached to the other chambers, respectively, and a terminal block is provided at a lower part of the storage operation part. The case body has a base attached to the gas flow rate detection part and a front part of the base. Attached, said 2
A partition plate for partitioning the chamber, a cover body attached to a front portion of the partition plate, and an auxiliary cover detachably attached to a lower portion of the cover body so as to cover a lower opening of the terminal block and the case body. , And is characterized by the following.

Therefore, according to the first aspect of the present invention, the terminal transmission device and the storage operation unit are arranged in parallel in front of the gas flow rate detection unit, and the vertical height is increased by the built-in terminal transmission device. And the original height of the gas meter can be maintained.

[0011]

[0012]

[0013]

According to the first aspect of the present invention, the front and rear compartments formed by the partition plate are formed in the case body, and the terminal transmission device and the storage operation unit can be housed in these two compartments, and the auxiliary cover is provided. By removing the terminal, the connection work to the terminal block becomes easy, and the lower opening of the case body is opened, so that the terminal transmission device can be easily pulled out from below.

[0015]

[0016]

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. 4 and 5 having the same members and the same functions are denoted by the same reference numerals.

FIGS. 1A and 1B are side views conceptually showing a gas meter according to the present invention.
Is for measuring the gas flowing in from the inflow port 2a at the upper end and flowing out from the outflow port 2b in the measuring chamber, and is provided at the lower rear part of the gas meter A. A case body 5 is provided on the front surface of the gas flow detecting unit 1, and the case body 5 is provided with a partition plate 8.
A front chamber 6 and a rear chamber 7 which are partitioned by and separated from each other are formed. In the rear room 7, a terminal transmission device 10 for transmitting data via a telephone line is provided.

Above the gas flow detecting section 1, a mechanism section 3 for converting information based on the flow measurement of the gas flow detecting section 1 into rotation capable of displaying a flow rate is provided.

A flow rate display unit 9 is provided at the front of the mechanism unit 3. A storage unit 11 for storing various information provided in the conventional terminal unit 4 is separated from the terminal unit and is separated from the front room 6 of the case body 5. It is provided within. The storage operation unit 11 generally corresponds to a microcomputer portion of a microcomputer meter.

A gas flow detecting unit 1 is provided below the case body 5.
An auxiliary cover 12 is attached detachably to cover the front opening of the terminal body 5 and the lower opening 5a of the case body 5 and to cover the terminal block 22 at the lower part of the terminal transmitting and transmitting device 10 and the memory operation unit 11. By removing the auxiliary cover 12, the terminal block 2
2 and, as shown in FIG. 1B, the terminal transmission device 10 can be easily taken out from the lower opening 5a of the case body 5 and replaced.

Hereinafter, the present invention will be described more specifically based on the embodiments shown in FIGS.

A mechanism section 3 is provided above the gas flow rate detection section 1, a gas inlet 2a and a gas outlet 2b are provided above the mechanism section 3, and a flow rate display section 9 is provided in front of the mechanism section 3.
Is provided. A case body 5 is provided in front of the gas flow detection unit 1 and the flow display unit 9.

The case body 5 includes a base 13 attached to the front part of the gas flow detecting unit 1, a partition plate 8 attached to the front part of the base 13, and a substantially middle part of the front part of the partition plate 8. , A cover body 14 provided from the front to the flow rate display section 9 and an auxiliary cover 12 provided below the cover body 14. Are formed with rear chambers 7, respectively.

An engaging projection 15 is formed at the upper end of the base 13, and a bent portion 16 is formed at the lower end, and a tip 17 of the bent portion 16 is formed on substantially the same plane as the bottom surface of the gas flow detecting unit 1. Have been. The engaging projection 18 formed at the tip of the upper side 8 a of the partition plate 8 is engaged with the engaging projection 15 of the base 13 via the packing 19.

The upper end of the circuit board 20 is sandwiched between the engaging projection 15 of the base 13 and the upper side 8a of the partition plate 8, and the circuit components of the terminal transmission device 10 are mounted on the circuit board 20. . Thereby, the terminal transmission device 10 is connected to the rear room 7.
It is stored in. The lower end of the circuit board 20 is
1 and fixed to the base 13 with screws 30. The screw 30 is rotated by inserting a driver or the like into the partition plate 8 through the notch 8b at the lower end.

At the front of the partition plate 8, a storage operation unit 11 composed of a microcomputer part of a microcomputer meter is mounted on the upper part, whereby the storage operation unit 11 is housed in the front room 6.

A terminal block 22 is attached to a lower portion of the storage operation section 11. This terminal block 22 is electrically connected to the terminal transmission device 10 and the storage operation unit 11.

The cover body 14 has a lower body 14a.
And an edge portion 14c connected to the upper portion of the main body portion 14a via an inclined portion 14b, and is screwed to the mechanism portion 3 via a set screw 24 (see FIG. 2). The protruding piece 25 formed on the upper inner surface of the main body portion 14a and the partition plate 8
And a packing 26 is interposed therebetween. Edge 14c
The flow rate display unit 9 is displayed in the opening 27 surrounded by the circle.

The auxiliary cover 12 is a member having a substantially L-shaped cross section. The lower side portion 12a abuts on the bent portion 16 at the lower end of the base 13, and the gas flow detecting portion is connected via a set screw 28 (see FIG. 2). 1 and covers the lower opening 5 a of the case body 5. A wiring grommet 29 is provided on the lower side 12 a of the auxiliary cover 12. A packing 31 is interposed between the upper side 12b of the auxiliary cover 12 and the terminal block 22. A battery 32 is provided in the auxiliary cover 12.

As described above, in the present embodiment, in the gas meter with a built-in terminal transmission device, the terminal transmission device 10 and the storage operation unit 11 for processing the flow rate information are arranged in the front and rear chambers of the case body 5. Since the terminals 6 and 7 are juxtaposed, the inherent height of the gas meter does not increase due to the incorporation of the terminal transmission device 10, and the compatibility in mounting does not deteriorate.

Further, since two chambers 6, 7 before and after being partitioned by a partition plate 8 are formed in the case body 5, these two chambers 6, 7 are formed.
The terminal transmission device 10 and the storage operation unit 11 can be stored compactly, and the connection work to the terminal block 22 is facilitated by removing the auxiliary cover 12, and the terminal transmission device 12 loosens the screw 30. And can be easily pulled out from below.

Further, the cover main body 14 includes a main body portion 14a for covering the storage operation portion 11, and an edge portion 1 extending upward from the main body portion 14a and abutting on a front portion of the flow rate display portion 9.
4c, the storage operation unit 11 and the flow rate display unit can be covered by one cover body 14, so that the number of parts can be reduced and the assembling work can be simplified.

[0034]

As described above in detail, according to the first aspect of the present invention, the terminal transmission transmission device and the storage operation unit are arranged in parallel in front of the gas flow detection unit, and the terminal transmission transmission is performed. With the built-in device, the vertical height does not increase, the original height of the gas meter can be maintained, and the compatibility in mounting is not lost.

[0035]

In addition, according to the first aspect of the present invention, the front and rear compartments are formed in the case body by the partition plate, and the auxiliary cover is detachable. The transmission transmission device and the memory operation unit can be stored compactly, and by removing the auxiliary cover, connection work to the terminal block becomes easy, and the terminal transmission transmission device can be easily pulled out from below. Replacement work can be performed easily.

[0037]

[Brief description of the drawings]

FIG. 1 conceptually shows a gas meter of the present invention;
(A) is a side view, (b) is an operation explanatory view.

FIG. 2 is a partially cutaway front view showing an embodiment of the gas meter of the present invention.

FIG. 3 is a side view in which a main part along a line III-III in FIG. 2 is sectioned;

FIG. 4 is a partially broken front view of a conventional gas meter.

FIG. 5 is a side view in which a main part of a conventional gas meter is sectioned.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gas flow detection part 3 Mechanical part 5 Case body 5a Lower opening (of a case body) 6 Front room 7 Rear room 8 Partition plate 9 Display part 10 Terminal transmission device 11 Storage operation part 12 Auxiliary cover 13 Base 14 Cover body 14a Main body Portion (of cover body) 14c Edge 20 Circuit board 30 Screw A Gas meter

Claims (1)

(57) [Claims] 1. A mechanism section is provided above a gas flow detecting section, and a flow display section is provided in front of the mechanism section, and is separated front and rear below a flow display section in front of the gas flow detecting section. A case body in which two chambers are formed is attached, a terminal transmission device is attached to one room, and a storage operation unit for processing flow rate information is attached to the other room, and a terminal block is provided below the storage operation unit. In the gas meter provided, the case body, a base attached to the gas flow rate detection unit, a partition attached to the front of the base, partitioning the two chambers, and a front of the partition A gas meter, comprising: a cover body attached; and an auxiliary cover detachably attached to a lower portion of the cover body so as to cover the terminal block and a lower opening of the case body.