JP6869832B2

JP6869832B2 - Gas meter adapter mounting method and gas meter adapter unit

Info

Publication number: JP6869832B2
Application number: JP2017132245A
Authority: JP
Inventors: 土田　泰秀; 泰秀土田; 宏竹中
Original assignee: 東洋計器株式会社
Priority date: 2017-07-05
Filing date: 2017-07-05
Publication date: 2021-05-12
Anticipated expiration: 2037-07-05
Also published as: JP2019015579A

Description

本発明は、ガスメータに所定の機能を付加するために使用されるアダプタを、ガスメータに取り付けるためのガスメータのアダプタ取付方法およびアダプタユニットに関する。 The present invention relates to a gas meter adapter mounting method and an adapter unit for mounting an adapter used to add a predetermined function to a gas meter to the gas meter.

ガスメータには、所定の機能、例えば、ガスメータで測定されるガス流量に基づき所定の基準で分計を行う分計機能、その他の機能を備えた機器（以下、これらを、アダプタと呼ぶ。）が接続されて、使用される場合がある。このようなアダプタは、ガスメータのメータケースに取り付けて一体化してユニットとして使用される場合、および、ガスメータとは異なる場所に設置され、配線によってガスメータに接続して使用される場合がある。特許文献１には、ガスメータの底面に取り付けて使用可能なガスメータ用のアダプタが提案されている。 The gas meter includes a device having a predetermined function, for example, a metering function for performing a metering based on a predetermined standard based on a gas flow rate measured by the gas meter, and other functions (hereinafter, these are referred to as adapters). May be connected and used. Such an adapter may be attached to the meter case of the gas meter and integrated to be used as a unit, or may be installed at a place different from the gas meter and connected to the gas meter by wiring. Patent Document 1 proposes an adapter for a gas meter that can be used by being attached to the bottom surface of the gas meter.

特開２００５−６１８６４号公報Japanese Unexamined Patent Publication No. 2005-61864

ここで、ガスメータ用のアダプタを、ガスメータの設置環境に応じて、アダプタをガスメータに取り付けて一体化したユニットとして使用する場合と、アダプタをガスメータとは分離させた状態で使用する場合とに、使い分けたい場合がある。 Here, depending on the installation environment of the gas meter, the adapter for the gas meter is used properly depending on whether the adapter is attached to the gas meter and used as an integrated unit or the adapter is used in a state of being separated from the gas meter. You may want to.

このような使い分けを可能とするためには、上記の特許文献１に記載されているように、アダプタをガスメータに取り付けるための機構を、ガスメータおよびアダプタの双方に設けておく必要がある。このような機構を設けると、その分、双方共に、寸法が大きくなる。 In order to enable such proper use, as described in Patent Document 1 above, it is necessary to provide a mechanism for attaching the adapter to the gas meter in both the gas meter and the adapter. If such a mechanism is provided, the dimensions of both will increase accordingly.

また、アダプタとガスメータを異なる場所に配置して配線接続して使用する場合には、ガスメータに設けたアダプタ取付用の機構は使用されないので、経済的でない。さらに、このような取付用の機構部分が露出したままの状態でガスメータが使用されると、ガスメータの外観品位が低下し、露出している機構部分に物が当たり損傷するおそれもあるので、好ましくない。 Further, when the adapter and the gas meter are arranged in different places and connected by wiring, the mechanism for attaching the adapter provided in the gas meter is not used, which is not economical. Further, if the gas meter is used with the mounting mechanism portion exposed, the appearance quality of the gas meter deteriorates, and an object may hit the exposed mechanism portion to damage it, which is preferable. Absent.

本発明の課題は、このような点に鑑みて、ガスメータを単独で使用する場合には、不要なアダプタ取付用の機構をガスメータから除去でき、アダプタをガスメータに取り付けて使用する場合には、アダプタをガスメータに簡単に取り付け可能なガスメータのアダプタ取付方法、およびアダプタユニットを提供することにある。 In view of these points, the subject of the present invention is that when the gas meter is used alone, an unnecessary mechanism for attaching the adapter can be removed from the gas meter, and when the adapter is attached to the gas meter and used, the adapter is used. To provide a gas meter adapter mounting method and an adapter unit that can be easily mounted on a gas meter.

本発明による、ガスメータに所定の機能を付加するために使用されるアダプタをガスメータに取り付けるためのガスメータのアダプタ取付方法において、使用するガスメータは、外部と通信を行うための通信端子を備え、通信端子は端子収容部内に配置され、端子収容部は、ガスメータのメータケースに形成した開口部を備え、開口部はメータケースに着脱可能に取り付ける端子カバーによって封鎖可能な構造となっている。 In the method of attaching a gas meter adapter for attaching an adapter used for adding a predetermined function to a gas meter according to the present invention, the gas meter used is provided with a communication terminal for communicating with the outside and is a communication terminal. Is arranged in the terminal accommodating portion, and the terminal accommodating portion has an opening formed in the meter case of the gas meter, and the opening has a structure that can be closed by a terminal cover that is detachably attached to the meter case.

このような一般的な構造のガスメータにアダプタを取り付け可能にするために、本発明の方法では、端子カバーとして機能するカバー部分およびアダプタを取付け可能なアダプタ取付部分を備えたアダプタ取付用端子カバーを用意する。ガスメータを単独で使用する場合には、通常の端子カバーをそのままメータケースに取り付けて開口部を封鎖したままにしておく。アダプタ取付用の機構がガスメータに配置されていないので、当該機構の部分が露出してガスメータの外観品位が悪化するなどの弊害は起きない。また、使用されないアダプタ取付用の機構をガスメータに設けておく必要がないので経済的であり、また、ガスメータの寸法の増加も回避できる。 In order to enable the adapter to be attached to a gas meter having such a general structure, in the method of the present invention, an adapter attachment terminal cover having a cover portion that functions as a terminal cover and an adapter attachment portion to which the adapter can be attached is provided. prepare. When using the gas meter alone, attach the normal terminal cover to the meter case as it is and leave the opening closed. Since the mechanism for attaching the adapter is not arranged in the gas meter, there is no adverse effect such as the part of the mechanism being exposed and the appearance quality of the gas meter being deteriorated. Further, it is economical because it is not necessary to provide the gas meter with a mechanism for attaching an adapter that is not used, and an increase in the size of the gas meter can be avoided.

ガスメータを、アダプタを取り付けて使用する場合には、ガスメータに取り付けられている端子カバーを外し、この代わりに、予め用意してあるアダプタ取付用端子カバーをメータケースに取り付けて、そのカバー部分によって、開口部を封鎖する。メータケースに取り付けたアダプタ取付用端子カバーには、アダプタ取付部分が設けられている。アダプタ取付用端子カバーをガスメータに取り付けることにより、ガスメータにはアダプタ取付用の機構が配置される。よって、ガスメータに、アダプタ取付用端子カバーを介して、アダプタを取り付けてユニット化できる。 When using the gas meter with an adapter attached, remove the terminal cover attached to the gas meter, and instead, attach the adapter mounting terminal cover prepared in advance to the meter case, and use the cover part. Close the opening. The adapter mounting terminal cover mounted on the meter case is provided with an adapter mounting portion. By attaching the adapter mounting terminal cover to the gas meter, a mechanism for mounting the adapter is arranged in the gas meter. Therefore, the adapter can be attached to the gas meter via the adapter attachment terminal cover to form a unit.

本発明によれば、ガスメータを単独で使用する場合と、アダプタを取り付けて使用する場合との間の切り替えを、通常の端子カバーとアダプタ取付用端子カバーとを交換することにより、可能としている。ガスメータの側には何ら変更を加えずに、端子カバーを交換するだけでよいので、切り替えを簡単かつ迅速に行うことができる。 According to the present invention, it is possible to switch between the case where the gas meter is used alone and the case where the gas meter is used by attaching the adapter by exchanging the normal terminal cover and the terminal cover for attaching the adapter. Since it is only necessary to replace the terminal cover without making any changes on the gas meter side, switching can be performed easily and quickly.

ここで、アダプタをガスメータに取り付けて使用する場合には、アダプタとガスメータとの間の配線を適切に引き回して、配線の弛み、外方へのはみ出し等が生じないようにすることが望ましい。このために、アダプタ取付用端子カバーに、アダプタと端子収容部の間に架け渡される配線を収容する配線収容溝を形成し、配線収容溝に、配線の一部を所定の角度に折り曲げた状態で収容する折り曲げ溝部分を形成しておく。 Here, when the adapter is attached to the gas meter for use, it is desirable to appropriately route the wiring between the adapter and the gas meter so that the wiring does not loosen or protrude outward. For this purpose, a wiring accommodating groove for accommodating the wiring bridged between the adapter and the terminal accommodating portion is formed in the adapter mounting terminal cover, and a part of the wiring is bent at a predetermined angle in the wiring accommodating groove. A bent groove portion to be accommodated in is formed.

ガスメータを、アダプタを取り付けて使用する場合には、アダプタ取付用端子カバーを、メータケースに取り付けて開口部を封鎖し、アダプタ取付用端子カバーのカバー前面にアダプタを取り付け、配線を、配線収容溝に沿って配置することができる。また、折り曲げ溝部分と、当該折り曲げ溝部分に収容した配線の折り曲げ配線部分との間に生じる係合力を利用して、配線収容溝から配線が外れることを防止できる。 When using a gas meter with an adapter attached, attach the adapter mounting terminal cover to the meter case to close the opening, attach the adapter to the front of the adapter mounting terminal cover cover, and wire the wiring. Can be placed along. Further, it is possible to prevent the wiring from coming off from the wiring accommodating groove by utilizing the engaging force generated between the bent groove portion and the bent wiring portion of the wiring accommodated in the bent groove portion.

また、アダプタ取付用端子カバーのカバー前面にアダプタ取付部分を設け、そのカバー背面の側がメータケースに取り付けられる場合には、カバー背面に配線収容溝を配置して外側から見えないようにすると共に、カバー前面からカバー背面に貫通して配線収容溝に繋がる配線穴を形成しておけばよい。この場合、例えば、ガスメータの端子に配線を繋ぎ、開口部を閉鎖し、開口部から引き出された配線を、配線収容溝に収容した後、貫通孔を通してアダプタ側の端子に引き込み、当該端子に接続した後、アダプタの端子台カバーで閉鎖する。 In addition, an adapter mounting part is provided on the front surface of the cover of the terminal cover for adapter mounting, and when the back side of the cover is mounted on the meter case, a wiring accommodating groove is arranged on the back surface of the cover so that it cannot be seen from the outside. A wiring hole may be formed from the front surface of the cover to the back surface of the cover and connected to the wiring accommodating groove. In this case, for example, the wiring is connected to the terminal of the gas meter, the opening is closed, the wiring drawn from the opening is accommodated in the wiring accommodating groove, and then drawn into the terminal on the adapter side through the through hole and connected to the terminal. After that, close it with the terminal block cover of the adapter.

さらに、端子カバーは一般にガスメータのメータケースにねじ止め固定される。この場合には、端子カバーをねじ止めするためのカバー取付用ねじ穴がガスメータの側に形成されている。アダプタ取付用端子カバーを、端子カバーと同様に、ねじ止めによって、メータケースに取り付けるために、アダプタ取付用端子カバーにおけるカバー前面のアダプタ取付部分に、カバー前面からカバー背面に貫通するカバー側ねじ通し穴を形成しておけばよい。 Further, the terminal cover is generally screwed and fixed to the meter case of the gas meter. In this case, a cover mounting screw hole for screwing the terminal cover is formed on the gas meter side. In order to attach the adapter mounting terminal cover to the meter case by screwing in the same way as the terminal cover, the cover side screw thread that penetrates from the front of the cover to the back of the cover through the adapter mounting part on the front of the cover in the terminal cover for adapter mounting. A hole may be formed.

ガスメータを、アダプタを取り付けて使用する場合には、端子カバーを外した後に、アダプタ取付用端子カバーをメータケースにねじ止めし、アダプタ取付用端子カバーのアダプタ取付部分にアダプタを取り付ける。アダプタ取付用端子カバーのカバー前面に露出しているカバー側ねじ通し穴および当該ねじ通し穴に装着したカバー取付ねじの頭部を、アダプタによって覆い隠せばよい。このようにすれば、アダプタが取り付けられたアダプタ取付用端子カバーが悪戯などによってガスメータから取外されることを防止するのに有効である。 When using the gas meter with the adapter attached, after removing the terminal cover, screw the adapter mounting terminal cover to the meter case and attach the adapter to the adapter mounting part of the adapter mounting terminal cover. The cover-side screw-through hole exposed on the front surface of the cover of the adapter mounting terminal cover and the head of the cover mounting screw mounted in the screw-through hole may be covered with the adapter. This is effective in preventing the adapter mounting terminal cover to which the adapter is mounted from being removed from the gas meter due to mischief or the like.

アダプタも、アダプタ取付用端子カバーにねじ止めによって取り付けることができる。この場合には、アダプタ取付用端子カバーのアダプタ取付部分に、アダプタをねじ止めするためのアダプタ取付用ねじ穴を形成し、アダプタには、アダプタ前面の側からアダプタ背面の側に貫通するアダプタ側ねじ通し穴を形成しておけばよい。 The adapter can also be attached to the adapter attachment terminal cover by screwing. In this case, an adapter mounting screw hole for screwing the adapter is formed in the adapter mounting part of the adapter mounting terminal cover, and the adapter has an adapter side that penetrates from the front side of the adapter to the back side of the adapter. A screw-through hole may be formed.

この場合には、アダプタ取付用端子カバーに対するアダプタの位置決め作業、すなわち、アダプタ取付用ねじ穴にアダプタ側ねじ通し穴を位置決めする作業を簡単に行うための位置決め機構を設けることが望ましい。すなわち、アダプタ取付用端子カバーのアダプタ取付部分に、アダプタを位置決めするためのカバー側位置決め部を設け、アダプタのアダプタ背面には、カバー側位置決め部に係合可能なアダプタ側位置決め部を設けておくことが望ましい。 In this case, it is desirable to provide a positioning mechanism for easily performing the work of positioning the adapter with respect to the terminal cover for mounting the adapter, that is, the work of positioning the screw hole on the adapter side in the screw hole for mounting the adapter. That is, a cover-side positioning portion for positioning the adapter is provided on the adapter mounting portion of the adapter mounting terminal cover, and an adapter-side positioning portion that can be engaged with the cover-side positioning portion is provided on the back surface of the adapter. Is desirable.

さらに、アダプタをねじ止めした後に、アダプタ前面に露出しているアダプタ側ねじ通し穴およびアダプタ取付ねじの頭部を、アダプタ前面に取り付けたアダプタカバーによって覆い隠すことが望ましい。この場合、アダプタの前面に露出するアダプタ取付ねじとしては、いじり止めねじ、あるいは、いたずら防止ねじ等と呼ばれるねじを使用すればよい。 Further, after screwing the adapter, it is desirable to cover the adapter side screw through hole exposed on the front surface of the adapter and the head of the adapter mounting screw with an adapter cover attached to the front surface of the adapter. In this case, as the adapter mounting screw exposed on the front surface of the adapter, a tamper-proof screw or a screw called a tamper-proof screw may be used.

次に、本発明による、上記構成のガスメータに取り付けて使用されるガスメータのアダプタユニットは、ガスメータに所定の機能を付加するための上記構成のアダプタと、端子カバーとして機能するカバー部分およびアダプタを取付け可能なアダプタ取付部分を備えた上記構成のアダプタ取付用端子カバーとを有していることを特徴としている。 Next, the adapter unit of the gas meter used by being attached to the gas meter having the above configuration according to the present invention has the adapter having the above configuration for adding a predetermined function to the gas meter, and the cover portion and the adapter that function as the terminal cover. It is characterized by having an adapter mounting terminal cover having the above configuration provided with a possible adapter mounting portion.

本発明の実施の形態におけるガスメータ単独で使用する単独仕様の場合とアダプタを取り付けて使用するアダプタ取付仕様との間の切り替えを示す説明図である。It is explanatory drawing which shows the switching between the case of the stand-alone specification which uses the gas meter alone in the embodiment of this invention, and the case of the adapter mounting specification which is used by mounting an adapter. アダプタ取付仕様のガスメータを示す正面図、側面図および背面図である。It is a front view, a side view and a rear view which show the gas meter of an adapter mounting specification. アダプタ取付仕様のガスメータを示す分解斜視図である。It is an exploded perspective view which shows the gas meter of the adapter mounting specification. 端子カバーを示す前面側斜視図および背面側斜視図、並びに、アダプタ取付用端子カバーを示す前面側斜視図および背面側斜視図である。It is a front side perspective view and a back side perspective view which show the terminal cover, and the front side perspective view and a back side perspective view which show the terminal cover for adapter mounting. アダプタの一例を示す前面側斜視図、背面側斜視図、正面図、背面図、およびアダプタカバーを取り外した状態の正面図である。It is a front side perspective view, the back side perspective view, the front view, the rear view, and the front view with the adapter cover removed which show an example of an adapter.

以下に、図面を参照して本発明の実施の形態を説明する。図１は、本実施の形態におけるガスメータ単独で使用する単体仕様のガスメータと、アダプタを取り付けて使用するアダプタ取付仕様のガスメータとの間の切り替えを示す説明図である。図２（ａ）はアダプタ取付仕様のガスメータを示す正面図、図２（ｂ）はその側面図、図２（ｃ）はその背面図である。図３はアダプタ取付仕様のガスメータの分解斜視図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram showing switching between a gas meter of a single specification used by a gas meter alone and a gas meter of an adapter mounting specification used by attaching an adapter in the present embodiment. FIG. 2A is a front view showing a gas meter having an adapter mounting specification, FIG. 2B is a side view thereof, and FIG. 2C is a rear view thereof. FIG. 3 is an exploded perspective view of a gas meter with an adapter mounting specification.

図１の（状態Ａ）は、単独仕様のガスメータ１Ａを示す。単独仕様のガスメータ１Ａは、一般的なガスメータであり、そのメータケース２の上端面にガス入口３およびガス出口４が配置されている。メータケース２の内部には、ガス入口３から流入してガス出口４に流れ出るガス流量を計測する不図示の計測ユニットと、計測ユニットから供給される計測データに基づき所定の基準でガス積算値の算出制御、外部との間の通信制御などの各種制御を行う不図示の制御ユニットなどが配置されている。 FIG. 1 (state A) shows a gas meter 1A having a single specification. The gas meter 1A having a single specification is a general gas meter, and a gas inlet 3 and a gas outlet 4 are arranged on the upper end surface of the meter case 2. Inside the meter case 2, a measurement unit (not shown) that measures the gas flow rate that flows in from the gas inlet 3 and flows out to the gas outlet 4, and a gas integrated value based on a predetermined standard based on the measurement data supplied from the measurement unit. A control unit (not shown) that performs various controls such as calculation control and communication control with the outside is arranged.

メータケース２の前面の上半部分には液晶表示器などの表示部５が取り付けられている。メータケース２における表示部５の下側部分には、端子カバー６がねじ止めによって、取り付けられている。図１の（状態Ｂ）は、端子カバー６を外した状態のガスメータ１Ｂを示す。端子カバー６をメータケース２から外すと、封鎖されていた端子収容部７の開口部８が露出する。端子収容部７には、外部との間で通信を行うための通信端子が配列されている。開口部８は、矩形枠状のシール９を挟み、端子カバー６によって気密状態で封鎖される。 A display unit 5 such as a liquid crystal display is attached to the upper half of the front surface of the meter case 2. A terminal cover 6 is attached to the lower portion of the display portion 5 in the meter case 2 by screwing. FIG. 1 (state B) shows the gas meter 1B with the terminal cover 6 removed. When the terminal cover 6 is removed from the meter case 2, the closed opening 8 of the terminal accommodating portion 7 is exposed. Communication terminals for communicating with the outside are arranged in the terminal accommodating portion 7. The opening 8 sandwiches the rectangular frame-shaped seal 9, and is sealed by the terminal cover 6 in an airtight state.

（状態Ａ）で示す単独仕様のガスメータ１Ａを、分計機能などの機能を備えたアダプタ２０を取り付けたアダプタ取付仕様で使用する場合には、（状態Ｂ）で示すように、端子カバー６を取り外す。次に、端子カバー６の代わりに、予め用意されているアダプタ取付用端子カバー３０をメータケース２に取り付けて、（状態Ｃ）で示すアダプタ取付仕様のガスメータ１Ｃに切り替える。なお、以下においては、ガスメータ１Ａから端子カバー６およびシール９を外した状態を、ガスメータ１として説明する。 When the gas meter 1A of the single specification shown in (State A) is used with the adapter mounting specification to which the adapter 20 having a function such as a metering function is attached, the terminal cover 6 is used as shown in (State B). Remove. Next, instead of the terminal cover 6, the adapter mounting terminal cover 30 prepared in advance is attached to the meter case 2 and switched to the gas meter 1C having the adapter mounting specifications shown in (state C). In the following, a state in which the terminal cover 6 and the seal 9 are removed from the gas meter 1A will be described as the gas meter 1.

アダプタ取付用端子カバー３０は、端子カバー６として機能するカバー部分３１と、アダプタ２０を取付け可能なアダプタ取付部分３２とを備えている。アダプタ取付用端子カバー３０のカバー部分３１は、シール９を介して、メータケース２にねじ止めされる。カバー部分３１によって、開口部８が気密状態に封鎖される。また、メータケース２に取り付けたアダプタ取付用端子カバー３０のカバー前面のアダプタ取付部分３２に、アダプタ２０をねじ止め可能である。 The adapter mounting terminal cover 30 includes a cover portion 31 that functions as a terminal cover 6 and an adapter mounting portion 32 to which the adapter 20 can be mounted. The cover portion 31 of the adapter mounting terminal cover 30 is screwed to the meter case 2 via the seal 9. The cover portion 31 seals the opening 8 in an airtight state. Further, the adapter 20 can be screwed to the adapter mounting portion 32 on the front surface of the cover of the adapter mounting terminal cover 30 mounted on the meter case 2.

このように、ガスメータ１Ａをアダプタ取付仕様のガスメータ１Ｃに切り替えるために、アダプタ取付用端子カバー３０とアダプタ２０とから構成されるアダプタユニット５０が予め用意されている。なお、アダプタ取付仕様のガスメータ１Ｃを単独仕様のガスメータ１Ａに戻す場合には、アダプタ２０およびアダプタ取付用端子カバー３０を外し、通常の端子カバー６を取り付けて開口部８を封鎖すればよい。 As described above, in order to switch the gas meter 1A to the gas meter 1C having an adapter mounting specification, an adapter unit 50 composed of an adapter mounting terminal cover 30 and an adapter 20 is prepared in advance. When returning the gas meter 1C of the adapter mounting specification to the gas meter 1A of the independent specification, the adapter 20 and the terminal cover 30 for mounting the adapter may be removed, and a normal terminal cover 6 may be attached to close the opening 8.

（端子カバー）
図４（ａ）および（ｂ）は端子カバー６を示す前面側斜視図および背面側斜視図であり、図４（ｃ）および（ｄ）はアダプタ取付用端子カバー３０を示す前面側斜視図および背面側斜視図である。 (Terminal cover)
4 (a) and 4 (b) are a front side perspective view and a rear side perspective view showing the terminal cover 6, and FIGS. 4 (c) and 4 (d) are a front side perspective view and a front side perspective view showing the adapter mounting terminal cover 30. It is a rear side perspective view.

図１および図４（ａ）、（ｂ）を参照して説明すると、端子カバー６は、ガスメータ１のメータケース２に形成した開口部８に対応した横長の長方形輪郭の前面板６ａと、その下端縁から後方に直角に折れ曲がっている細幅の底面板６ｂとを備えている。前面板６ａの左右の縁部分には、ねじ止め用のねじ通し穴６ｃ、６ｄが貫通している。前面板６ａの背面６ｅには、開口部８にはまり込む矩形枠６ｆが形成されている。また、底面板６ｂおよび矩形枠６ｆの下辺部分には、配線用の切り込み６ｇ、６ｈが形成されている。ねじ通し穴６ｃ、６ｄに対応するカバー取付用ねじ穴８ａ、８ｂが、図１、図３に示すように、ガスメータ１のメータケース２の開口部８における左右の縁部分に形成されている。端子カバー６は、左右２本のカバー取付ねじ１１ａ、１１ｂによって、メータケース２に取り付けられる。 Explaining with reference to FIGS. 1 and 4 (a) and 4 (b), the terminal cover 6 includes a front plate 6a having a horizontally long rectangular contour corresponding to an opening 8 formed in the meter case 2 of the gas meter 1 and a front plate 6a thereof. It is provided with a narrow bottom plate 6b that is bent at a right angle to the rear from the lower end edge. Screw-through holes 6c and 6d for screwing penetrate through the left and right edge portions of the front plate 6a. A rectangular frame 6f that fits into the opening 8 is formed on the back surface 6e of the front plate 6a. Further, notches 6g and 6h for wiring are formed in the lower side portions of the bottom plate 6b and the rectangular frame 6f. As shown in FIGS. 1 and 3, cover mounting screw holes 8a and 8b corresponding to the screw through holes 6c and 6d are formed at the left and right edge portions of the opening 8 of the meter case 2 of the gas meter 1. The terminal cover 6 is attached to the meter case 2 by two cover mounting screws 11a and 11b on the left and right.

（アダプタ取付用端子カバー）
図２、図３および図４（ｃ）、（ｄ）を参照して説明すると、アダプタ取付用端子カバー３０は、例えば矩形輪郭の板状の樹脂成形品であり、その上側部分がカバー部分３１であり、そのカバー前面３３がアダプタ取付部分３２となっている。上側のカバー部分３１はメータケース２の開口部８を封鎖可能な大きさの部分である。 (Terminal cover for adapter mounting)
Explaining with reference to FIGS. 2, 3 and 4 (c) and 4 (d), the adapter mounting terminal cover 30 is, for example, a plate-shaped resin molded product having a rectangular contour, and the upper portion thereof is the cover portion 31. The front surface 33 of the cover is the adapter mounting portion 32. The upper cover portion 31 is a portion having a size capable of closing the opening 8 of the meter case 2.

カバー部分３１におけるカバー背面３４の側には、開口部８に嵌め込み可能な矩形枠３５が形成されており、この内側部分は格子状に形成したリブによって補強されている。矩形枠３５を取り囲むカバー背面部分と、メータケース２の開口部８の外周縁部分との間に、シール９が装着される。カバー部分３１の左右の端部分には、メータケース２側のカバー取付用ねじ穴８ａ、８ｂに対応するカバー側ねじ通し穴３６ａ、３６ｂが形成されている。カバー側ねじ通し穴３６ａ、３６ｂは、カバー前面３３からカバー背面３４に貫通している。カバー取付ねじ１１ａ、１１ｂによって、アダプタ取付用端子カバー３０のカバー部分３１を、シール９を挟み、メータケース２に固定して、開口部８を密閉状態に封鎖できる。 A rectangular frame 35 that can be fitted into the opening 8 is formed on the side of the back surface 34 of the cover in the cover portion 31, and the inner portion thereof is reinforced by ribs formed in a grid pattern. A seal 9 is mounted between the back surface portion of the cover surrounding the rectangular frame 35 and the outer peripheral edge portion of the opening 8 of the meter case 2. At the left and right end portions of the cover portion 31, cover-side screw-through holes 36a and 36b corresponding to the cover-mounting screw holes 8a and 8b on the meter case 2 side are formed. The cover-side screw-through holes 36a and 36b penetrate from the front surface 33 of the cover to the back surface 34 of the cover. The cover portion 31 of the adapter mounting terminal cover 30 can be fixed to the meter case 2 with the seal 9 sandwiched by the cover mounting screws 11a and 11b, and the opening 8 can be closed in a sealed state.

カバー背面３４において、カバー部分３１の下側部分は、背面側にせり出して、全体として、格子状に形成したリブによって補強されたリブ付き部分３７となっている。リブ付き部分３７の上端に形成されている横方向に延びる横リブ３７ａは、メータケース２の開口部８の底側開口部分を封鎖する部分である。この横リブ３７ａには、配線用の切り込み３７ｂが形成されている。 In the back surface 34 of the cover, the lower portion of the cover portion 31 protrudes toward the back surface side to form a ribbed portion 37 reinforced by ribs formed in a grid pattern as a whole. The lateral rib 37a formed at the upper end of the ribbed portion 37 is a portion that closes the bottom opening portion of the opening 8 of the meter case 2. A notch 37b for wiring is formed in the lateral rib 37a.

リブ付き部分３７には、配線収容溝３８が形成されている。図４（ｄ）、図２（ｃ）に示すように、配線収容溝３８は、リブ付き部分３７の上端の一つの配線用の切り込み３７ｂから下方に直線状に延びる上側溝部分３８ａと、この下端から横方向に直角に折れ曲がって延びる折り曲げ溝部分３８ｂと、この端から下方に直線状に延びる下側溝部分３８ｃとを備えている。下側溝部分３８ｃの下端部は、カバー背面３４からカバー前面３３に貫通している配線穴３９を介して、カバー前面３３の側に連通している。カバー前面３３の下端部における配線穴３９が開口している部分には、前方に台形状に突出した配線ガイド４０が形成されている。 A wiring accommodating groove 38 is formed in the ribbed portion 37. As shown in FIGS. 4 (d) and 2 (c), the wiring accommodating groove 38 includes an upper groove portion 38a extending linearly downward from one wiring notch 37b at the upper end of the ribbed portion 37. It includes a bent groove portion 38b that bends at a right angle in the lateral direction from the lower end and a lower groove portion 38c that extends linearly downward from this end. The lower end of the lower groove portion 38c communicates with the front surface 33 of the cover through a wiring hole 39 penetrating from the back surface 34 of the cover to the front surface 33 of the cover. A wiring guide 40 protruding forward in a trapezoidal shape is formed in a portion of the lower end portion of the front surface 33 of the cover where the wiring hole 39 is open.

カバー前面３３のアダプタ取付部分３２には、ねじ４１を備えたアダプタ位置決め部が設けられている。ねじ４１（図３参照）は、カバー前面３３に形成したねじ穴４２に取り付けられている。ねじ穴４２は、カバー前面３３の上端側における幅方向の中央に位置している。ねじ穴４２には、ねじ４１の頭部がカバー前面３３から所定量だけ浮き上がった状態となるように、ねじ４１がねじ込み固定される。また、カバー前面３３の下端側における幅方向の中央には、アダプタ取付ねじ４３（図３参照）を取り付けるためのアダプタ取付用ねじ穴４４が形成されている。 The adapter mounting portion 32 on the front surface 33 of the cover is provided with an adapter positioning portion provided with a screw 41. The screw 41 (see FIG. 3) is attached to a screw hole 42 formed in the front surface 33 of the cover. The screw hole 42 is located at the center in the width direction on the upper end side of the front surface 33 of the cover. The screw 41 is screwed and fixed in the screw hole 42 so that the head of the screw 41 is raised by a predetermined amount from the front surface 33 of the cover. Further, an adapter mounting screw hole 44 for mounting the adapter mounting screw 43 (see FIG. 3) is formed at the center in the width direction on the lower end side of the cover front surface 33.

（アダプタ）
図５（ａ）、（ｂ）はアダプタ２０を示す前面側斜視図および背面側斜視図であり、図５（ｃ）〜（ｅ）はアダプタの正面図、背面図、およびアダプタカバーを取り外した状態の正面図である。 (adapter)
5 (a) and 5 (b) are front side perspective views and rear side perspective views showing the adapter 20, and FIGS. 5 (c) to 5 (e) show the front view, the rear view, and the adapter cover of the adapter with the adapter cover removed. It is a front view of the state.

図２および図５を参照して説明すると、アダプタ２０は、アダプタ取付用端子カバー３０に対応する大きさの矩形輪郭形状をしており、そのアダプタケース２１の前面２１ａには、表示部２２、操作ボタン２３等が配置されている。また、表示部２２の下側には、図３、図５（ｅ）に示すように、開口部２１ｂが形成され、この開口部２１ｂは、矩形枠状のシール２４を挟み、アダプタカバー２５によって密閉状態で封鎖されている。アダプタケース２１の内部には、例えば、ガスメータ１によって計測されたガス流量を所定の基準に従って積算する分計処理などを行う不図示の制御部、制御部が外部との間で通信を行うための通信端子２６が配置されている。 Explaining with reference to FIGS. 2 and 5, the adapter 20 has a rectangular contour shape having a size corresponding to the adapter mounting terminal cover 30, and the front surface 21a of the adapter case 21 has a display unit 22. The operation buttons 23 and the like are arranged. Further, as shown in FIGS. 3 and 5 (e), an opening 21b is formed on the lower side of the display unit 22, and the opening 21b sandwiches the rectangular frame-shaped seal 24 and is provided by the adapter cover 25. It is sealed in a sealed state. Inside the adapter case 21, for example, a control unit (not shown) that performs a metering process for integrating the gas flow rate measured by the gas meter 1 according to a predetermined reference, and a control unit for communicating with the outside. The communication terminal 26 is arranged.

アダプタカバー２５には、その左右の縁部に、ねじ通し穴２５ａ、２５ｂが形成されている。アダプタケース２１には、ねじ穴２１ｃ、２１ｄが形成されており、アダプタカバー２５がアダプタケース２１にねじ止めされる。本例では、いじり止めねじ、あるいは、いたずら防止ねじと呼ばれるねじ２７ａ、２７ｂが取り付けられる。 The adapter cover 25 is formed with screw through holes 25a and 25b at its left and right edges. Screw holes 21c and 21d are formed in the adapter case 21, and the adapter cover 25 is screwed to the adapter case 21. In this example, tamper-proof screws or screws 27a and 27b called tamper-proof screws are attached.

ここで、アダプタ２０のアダプタ背面２１ｅには、その上側部分の幅方向の中央に、カバー側位置決め部に係合可能なアダプタ側位置決め部が設けられている。アダプタ側位置決め部は位置決め用のねじ係合溝２８を備えている。ねじ係合溝２８は下方に開口しており、下側から、位置決め用のねじ４１の脚部を差し込み可能である。ねじ係合溝２８の下端開口は下方に向けて左右に広がるねじガイド面となっている。図２において、アダプタ取付用端子カバー３０のカバー前面３３のねじ穴４２に位置決め用のねじ４１を、その頭部が浮き上がった状態に取り付け、アダプタ２０のねじ係合溝２８にねじ４１が差し込まれるように、カバー前面３３に沿って上側からアダプタ２０を取り付ける。これにより、アダプタ２０をカバー前面３３のアダプタ取付部分３２に位置決めできる。 Here, the adapter back surface 21e of the adapter 20 is provided with an adapter-side positioning portion that can be engaged with the cover-side positioning portion at the center of the upper portion thereof in the width direction. The adapter-side positioning portion includes a screw engaging groove 28 for positioning. The screw engaging groove 28 is open downward, and the leg portion of the positioning screw 41 can be inserted from the lower side. The lower end opening of the screw engaging groove 28 is a screw guide surface that extends downward to the left and right. In FIG. 2, a positioning screw 41 is attached to a screw hole 42 on the front surface 33 of the cover of the adapter mounting terminal cover 30 with its head raised, and the screw 41 is inserted into the screw engaging groove 28 of the adapter 20. As shown above, the adapter 20 is attached from above along the front surface 33 of the cover. As a result, the adapter 20 can be positioned on the adapter mounting portion 32 on the front surface 33 of the cover.

また、アダプタケース２１には、アダプタカバー２５によって覆い隠されている開口部２１ｂの下端の一方の角部分に、アダプタ側ねじ通し穴２１ｆが形成されている。アダプタ２０を上記のようにカバー前面３３のアダプタ取付部分３２に位置決めすると、アダプタ側ねじ通し穴２１ｆとアダプタ取付用端子カバー３０のアダプタ取付用ねじ穴４４とが一致する。この状態で、アダプタ取付ねじ４３を用いて、アダプタ２０をアダプタ取付用端子カバー３０に固定できる。アダプタ取付ねじ４３を止めた後に、ねじ２７ａ、２７ｂによって、アダプタカバー２５をアダプタケース２１に固定すると、開口部２１ｂが封鎖される。また、アダプタ側ねじ通し穴２１ｆおよびアダプタ取付ねじ４３も覆い隠される。 Further, in the adapter case 21, an adapter-side screw-through hole 21f is formed in one corner of the lower end of the opening 21b which is covered by the adapter cover 25. When the adapter 20 is positioned on the adapter mounting portion 32 on the front surface 33 of the cover as described above, the screw through hole 21f on the adapter side and the adapter mounting screw hole 44 of the adapter mounting terminal cover 30 match. In this state, the adapter 20 can be fixed to the adapter mounting terminal cover 30 by using the adapter mounting screw 43. After fixing the adapter mounting screw 43, the adapter cover 25 is fixed to the adapter case 21 by the screws 27a and 27b, and the opening 21b is closed. Further, the adapter side screw through hole 21f and the adapter mounting screw 43 are also covered.

以上説明したように、本例では、ガスメータ１Ａに所定の機能を付加するためのアダプタ２０と、端子カバー６として機能するカバー部分３１およびアダプタ２０を取付け可能なアダプタ取付部分３２を備えたアダプタ取付用端子カバー３０とが、アダプタユニット５０として事前に用意されている。単独仕様のガスメータ１Ａから、端子カバー６を外した状態のガスメータ１Ｂに、アダプタユニット５０を取り付けるだけで、アダプタ取付仕様のガスメータ１Ｃを構成できる。 As described above, in this example, the adapter mounting includes the adapter 20 for adding a predetermined function to the gas meter 1A, the cover portion 31 functioning as the terminal cover 6, and the adapter mounting portion 32 to which the adapter 20 can be mounted. The terminal cover 30 is prepared in advance as the adapter unit 50. The gas meter 1C having an adapter mounting specification can be configured simply by attaching the adapter unit 50 to the gas meter 1B with the terminal cover 6 removed from the gas meter 1A having a single specification.

また、アダプタ取付用端子カバー３０は、アダプタ２０とガスメータ１の間に架け渡される配線４５を収容する配線収容溝３８を有しており、配線収容溝３８には、配線４５の一部を所定の角度、例えば直角に折り曲げた状態で収容する折り曲げ溝部分３８ｂが備わっている。したがって、配線４５を、弛みのできない状態で確実に引き回すことができる。また、アダプタ取付用端子カバー３０は、カバー前面３３からカバー背面３４に貫通して配線収容溝３８に繋がる配線穴３９が形成されている。配線４５を外部から目立たない状態で引き回すことができるので、ガスメータの外観品位の低下を防止できる。 Further, the adapter mounting terminal cover 30 has a wiring accommodating groove 38 for accommodating the wiring 45 bridged between the adapter 20 and the gas meter 1, and a part of the wiring 45 is designated in the wiring accommodating groove 38. The bending groove portion 38b is provided so as to be accommodated in a state of being bent at an angle of, for example, a right angle. Therefore, the wiring 45 can be reliably routed in a state where it cannot be loosened. Further, the adapter mounting terminal cover 30 is formed with a wiring hole 39 that penetrates from the front surface 33 of the cover to the back surface 34 of the cover and connects to the wiring accommodating groove 38. Since the wiring 45 can be routed in an inconspicuous state from the outside, deterioration of the appearance quality of the gas meter can be prevented.

さらに、アダプタ取付用端子カバー３０は、ガスメータ１のメータケース２にねじ止めするために、カバー前面３３のアダプタ取付部分３２に、カバー前面からカバー背面に貫通するカバー側ねじ通し穴３６ａ、３６ｂを備えている。これらのカバー側ねじ通し穴は、アダプタ取付部分３２に取り付けたアダプタ２０によって覆い隠される位置に形成されている。したがって、アダプタ取付用端子カバー３０をメータケース２にねじ止めしているカバー取付ねじ１１ａ、１１ｂが外部に露出しない。悪戯などによって、アダプタ取付用端子カバー３０が外されてしまうことを防止できる。 Further, the adapter mounting terminal cover 30 has cover-side screw-through holes 36a and 36b penetrating from the front surface of the cover to the back surface of the cover in the adapter mounting portion 32 of the front surface 33 of the cover in order to be screwed to the meter case 2 of the gas meter 1. I have. These cover-side screw-through holes are formed at positions that are covered by the adapter 20 attached to the adapter attachment portion 32. Therefore, the cover mounting screws 11a and 11b that screw the adapter mounting terminal cover 30 to the meter case 2 are not exposed to the outside. It is possible to prevent the adapter mounting terminal cover 30 from being removed due to mischief or the like.

また、アダプタ取付用端子カバー３０のアダプタ取付部分３２には、アダプタ２０をねじ止めするためのアダプタ取付用ねじ穴４４が形成されており、アダプタ２０には、アダプタ前面の側からアダプタ背面の側に貫通するアダプタ側ねじ通し穴２１ｆが形成されている。アダプタ２０には、アダプタ前面の側に露出するアダプタ側ねじ通し穴２１ｆを覆い隠すアダプタカバー２５がねじ止めされている。アダプタ２０をアダプタ取付用端子カバー３０にねじ止めしているアダプタ取付ねじ４３が外部に露出しない。また、アダプタカバー２５のねじ止めには、いじり止めねじ、あるいは、いたずら防止ねじ等と呼ばれるねじを使用している。よって、悪戯などによって、アダプタ２０が外されてしまうことを防止できる。 Further, an adapter mounting screw hole 44 for screwing the adapter 20 is formed in the adapter mounting portion 32 of the adapter mounting terminal cover 30, and the adapter 20 is formed from the front side of the adapter to the back side of the adapter. An adapter-side screw-through hole 21f is formed so as to penetrate through the hole. An adapter cover 25 that covers the adapter-side screw-through hole 21f exposed on the front side of the adapter is screwed to the adapter 20. The adapter mounting screw 43 that secures the adapter 20 to the adapter mounting terminal cover 30 is not exposed to the outside. Further, for screwing the adapter cover 25, a screw called a tamper-proof screw or a tamper-proof screw is used. Therefore, it is possible to prevent the adapter 20 from being removed due to mischief or the like.

さらに、アダプタ取付用端子カバー３０のアダプタ取付部分３２には、アダプタ２０を位置決めするためのカバー側位置決め部である位置決め用のねじ４１が取り付けられており、アダプタ２０には、そのアダプタ背面に、位置決め用のねじ４１に係合可能なアダプタ側位置決め部であるねじ係合溝２８が形成されている。したがって、アダプタ２０をアダプタ取付用端子カバー３０に位置決めしてねじ止めする作業を簡単に行うことができる。 Further, a positioning screw 41, which is a cover-side positioning portion for positioning the adapter 20, is attached to the adapter mounting portion 32 of the adapter mounting terminal cover 30, and the adapter 20 is attached to the back surface of the adapter. A screw engaging groove 28, which is an adapter-side positioning portion that can be engaged with the positioning screw 41, is formed. Therefore, the work of positioning the adapter 20 on the adapter mounting terminal cover 30 and screwing it can be easily performed.

１ガスメータ
１Ａ単独仕様のガスメータ
１Ｂ端子カバーを外した状態のガスメータ
１Ｃアダプタ取付仕様のガスメータ
２メータケース
３ガス入口
４ガス出口
５表示部
６端子カバー
６ａ前面板
６ｂ底面板
６ｃ、６ｄねじ通し穴
６ｅ背面
６ｆ矩形枠
６ｇ、６ｈ切り込み
７端子収容部
８開口部
８ａ、８ｂカバー取付用ねじ穴
９シール
１１ａ、１１ｂカバー取付ねじ
２０アダプタ
２１アダプタケース
２１ａアダプタ前面
２１ｂ開口部
２１ｃ、２１ｄねじ穴
２１ｅアダプタ背面
２１ｆアダプタ側ねじ通し穴
２２表示部
２３操作ボタン
２４シール
２５アダプタカバー
２５ａ、２５ｂねじ通し穴
２６通信端子
２７ａ、２７ｂねじ
２８ねじ係合溝
３０アダプタ取付用端子カバー
３１カバー部分
３２アダプタ取付部分
３３カバー前面
３４カバー背面
３５矩形枠
３６ａ、３６ｂカバー側ねじ通し穴
３７リブ付き部分
３７ａ横リブ
３７ｂ切り込み
３８配線収容溝
３８ａ上側溝部分
３８ｂ折り曲げ溝部分
３８ｃ下側溝部分
３９配線穴
４０配線ガイド
４１ねじ
４２ねじ穴
４３アダプタ取付ねじ
４４アダプタ取付用ねじ穴
４５配線
５０アダプタユニット 1 Gas meter 1A Single specification gas meter 1B Gas meter with terminal cover removed 1C Gas meter with adapter mounting specification 2 Meter case 3 Gas inlet 4 Gas outlet 5 Display unit 6 Terminal cover 6a Front plate 6b Bottom plate 6c, 6d Screw through hole 6e Back 6f Rectangular frame 6g, 6h Notch 7 Terminal housing 8 Opening 8a, 8b Cover mounting screw hole 9 Seal 11a, 11b Cover mounting screw 20 Adapter 21 Adapter case 21a Adapter front 21b Opening 21c, 21d Screw hole 21e Adapter back 21f Adapter side screw through hole 22 Display 23 Operation button 24 Seal 25 Adapter cover 25a, 25b Thread through hole 26 Communication terminal 27a, 27b Screw 28 Screw engagement groove 30 Adapter mounting terminal cover 31 Cover part 32 Adapter mounting part 33 cover Front 34 Cover Back 35 Rectangular frame 36a, 36b Cover side screw through hole 37 Ribbed part 37a Horizontal rib 37b Notch 38 Wiring accommodation groove 38a Upper groove part 38b Bending groove part 38c Lower groove part 39 Wiring hole 40 Wiring guide 41 Screw 42 Screw Hole 43 Adapter mounting screw 44 Adapter mounting screw Hole 45 Wiring 50 Adapter unit

Claims

It is a method of attaching an adapter of a gas meter for attaching an adapter used for adding a predetermined function to the gas meter to the gas meter.
The gas meter includes a communication terminal for communicating with the outside, the communication terminal is arranged in a terminal accommodating portion, the terminal accommodating portion includes an opening formed in a meter case of the gas meter, and the opening is provided. It can be closed by a terminal cover that is detachably attached to the meter case.
Prepare an adapter mounting terminal cover having a cover portion that functions as the terminal cover and an adapter mounting portion that can mount the adapter.
When the gas meter is used alone, the terminal cover is attached to the meter case to close the opening.
When the adapter is attached to the gas meter for use, the adapter attachment terminal cover is attached to the meter case instead of the terminal cover to close the opening.
A method of attaching a gas meter adapter to the adapter attachment portion of the adapter attachment terminal cover attached to the meter case.
A wiring accommodating groove for accommodating the wiring bridged between the adapter and the terminal accommodating portion is formed in the adapter mounting terminal cover, and a part of the wiring is bent at a predetermined angle in the wiring accommodating groove. Form a bent groove part to be accommodated in the state,
When the adapter is attached to the gas meter for use,
The adapter mounting terminal cover is attached to the meter case to close the opening.
Attach the adapter to the front of the cover of the adapter mounting terminal cover,
A method of attaching a gas meter adapter that prevents the wiring from being disengaged from the wiring accommodating groove by utilizing the engaging force between the bent groove portion and the bent wiring portion of the wiring accommodated in the bent groove portion .

In claim 1,
The adapter mounting portion is provided on the front surface of the cover.
The wiring accommodating groove is arranged on the back surface of the cover of the terminal cover for mounting the adapter.
The adapter mounting terminal cover is formed with a wiring hole that penetrates from the front surface of the cover to the back surface of the cover and connects to the wiring accommodating groove.
When the adapter is attached to the gas meter for use,
The adapter mounting terminal cover is attached to the meter case so that the back surface of the cover faces the gas meter, and the opening is closed.
Attach the adapter to the front surface of the cover of the adapter attachment terminal cover,
A method of mounting an adapter for a gas meter in which the wiring is bridged between the adapter and the terminal accommodating portion through the wiring hole.

In claim 2,
The meter case is formed with a cover mounting screw hole for screwing the terminal cover.
A cover-side screw-through hole penetrating from the front surface of the cover to the back surface of the cover is formed in the adapter mounting portion on the front surface of the cover in the terminal cover for mounting the adapter.
When the adapter is attached to the gas meter for use,
The terminal cover for mounting the adapter is screwed to the meter case,
The cover-side screw through hole exposed on the front surface of the cover of the adapter mounting terminal cover and the head of the cover mounting screw attached to the cover-side screw through hole are covered with the adapter cover attached to the front surface of the cover. How to attach the gas meter adapter.

In claim 3,
A cover-side positioning portion for positioning the adapter is provided on the adapter mounting portion of the adapter mounting terminal cover, and an adapter-side positioning portion that can be engaged with the cover-side positioning portion is provided on the back surface of the adapter of the adapter. ,
An adapter mounting screw hole for screwing the adapter is formed in the adapter mounting portion of the adapter mounting terminal cover, and the adapter side penetrates from the front side of the adapter to the back side of the adapter. Form a screw hole,
An adapter cover that covers the screw-through hole on the adapter side that is exposed on the front side of the adapter can be attached to the adapter.
When the adapter is attached to the gas meter for use,
The terminal cover for mounting the adapter is screwed to the meter case,
The adapter-side positioning portion of the adapter is engaged with the cover-side positioning portion of the adapter mounting terminal cover to position the adapter.
From the front side of the positioned adapter, screw the adapter mounting screw into the adapter mounting screw hole through the adapter side screw through hole, and mount the adapter to the adapter mounting terminal cover.
A method of mounting a gas meter adapter in which the adapter-side screw-through hole exposed on the front surface of the adapter and the head of the adapter mounting screw are covered with the adapter cover mounted on the front surface of the adapter.

It is a gas meter adapter unit that is used by attaching to a gas meter.
The gas meter includes a communication terminal for communicating with the outside, the communication terminal is arranged in a terminal accommodating portion, the terminal accommodating portion includes an opening formed in a meter case of the gas meter, and the opening is provided. It can be closed by a terminal cover,
An adapter for adding a predetermined function to the gas meter,
It has a cover portion that functions as the terminal cover and an adapter mounting terminal cover that includes an adapter mounting portion to which the adapter can be mounted .
The adapter mounting terminal cover has a wiring accommodating groove for accommodating wiring extending between the adapter and the gas meter.
The wiring accommodating groove includes a bent groove portion for accommodating a part of the wiring in a state of being bent at a predetermined angle.
Gas meter adapter unit.

In claim 5,
The terminal cover for mounting the adapter is
The back of the cover provided with the wiring accommodating groove and
The front of the cover with the adapter mounting part to mount the adapter, and
An adapter unit for a gas meter having a wiring hole that penetrates from the front surface of the cover to the back surface of the cover and connects to the wiring accommodating groove.

In claim 6,
The adapter mounting terminal cover is provided with a screw-through hole penetrating from the front surface of the cover to the back surface of the cover in the adapter mounting portion on the front surface of the cover so as to be screwed to the meter case of the gas meter.
The adapter unit of the gas meter is formed at a position where the screw-through hole exposed on the front surface of the cover of the adapter mounting terminal cover is covered by the adapter mounted on the adapter mounting portion.

In claim 7,
The adapter mounting portion of the adapter mounting terminal cover is formed with a cover-side positioning portion for positioning the adapter and an adapter mounting screw hole for screwing the adapter.
The adapter has an adapter-side positioning portion that can be engaged with the cover-side positioning portion and an adapter-side screw-through hole that penetrates from the front side of the adapter to the back side of the adapter on the back surface of the adapter. ,
An adapter unit for a gas meter to which an adapter cover that covers the screw-through hole on the adapter side exposed on the front side of the adapter is detachably attached to the adapter.