JP2019015579A - Adaptor attachment method of gas meter and adaptor unit of gas meter - Google Patents

Abstract

To propose an adaptor attachment method of a gas meter capable of simply changing from a single use specification to an adapter attachment use specification of the gas meter without reducing appearance quality of the gas meter of the single use specification.SOLUTION: An adaptor attachment method of a gas meter prepares an adaptor attachment terminal cover 30 having an adaptor attachment portion 32 capable of attaching a cover portion 31 serving as a terminal cover 6 as the terminal cover 6 of a gas meter 1A and an adaptor 20. In the case of the gas meter 1A of the single use specification, the ordinary terminal cover 6 is used as it is by being attached to a meter case 2. Since a mechanism for adaptor attachment is not arranged on the gas meter 1A, a portion of the mechanism is exposed, and harmful influences such as the deterioration of the appearance level are not caused. The gas meter 1A of the single use specification can be simply changed to a gas meter 1C of the adaptor attachment specification only by exchanging the terminal cover 6 to the adaptor attachment terminal cover 30.SELECTED DRAWING: Figure 1

Description

  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.

  A gas meter has 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 devices (hereinafter referred to as an adapter). May be connected and used. Such an adapter may be used as a unit by being attached to a meter case of a gas meter, or may be used at a location 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.

JP 2005-61864 A

  Here, depending on the gas meter installation environment, the gas meter adapter is used as a unit integrated with the adapter attached to the gas meter, or when the adapter is used separately from the gas meter. Sometimes you want to.

  In order to enable such a proper use, it is necessary to provide a mechanism for attaching the adapter to the gas meter in both the gas meter and the adapter, as described in Patent Document 1. If such a mechanism is provided, the size of both increases accordingly.

  In addition, when the adapter and the gas meter are arranged at different locations and connected by wiring, the adapter mounting mechanism provided in the gas meter is not used, so that it is not economical. Further, if the gas meter is used with such a mounting mechanism part exposed, the appearance quality of the gas meter is lowered, and there is a possibility that an object may hit and damage the exposed mechanism part. Absent.

  In view of these points, the problem of the present invention is that when a gas meter is used alone, an unnecessary adapter mounting mechanism can be removed from the gas meter, and when the adapter is attached to the gas meter, the adapter is used. It is an object to provide a gas meter adapter mounting method and an adapter unit that can be easily mounted on a gas meter.

  In the gas meter adapter mounting method for mounting an adapter used for adding a predetermined function to the gas meter according to the present invention, the gas meter to be used includes a communication terminal for communicating with the outside, and the communication terminal Is disposed in the terminal accommodating portion, and the terminal accommodating portion includes an opening formed in the meter case of the gas meter, and the opening is configured to be sealed by a terminal cover that is detachably attached to the meter case.

  In order to enable the adapter to be attached to the gas meter having such a general structure, in the method of the present invention, a cover portion functioning as a terminal cover and an adapter attachment terminal cover having an adapter attachment portion to which the adapter can be attached are provided. prepare. When the gas meter is used alone, a normal terminal cover is attached to the meter case as it is, and the opening is kept sealed. Since the mechanism for attaching the adapter is not arranged in the gas meter, there is no adverse effect such as the appearance of the gas meter being deteriorated by exposing the portion of the mechanism. Further, since it is not necessary to provide the adapter with an adapter mounting mechanism that is not used, it is economical, and an increase in the size of the gas meter can be avoided.

  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. Seal the opening. The adapter mounting terminal cover attached to the meter case is provided with an adapter mounting portion. By attaching the adapter attachment terminal cover to the gas meter, an adapter attachment mechanism is arranged on the gas meter. Therefore, an adapter can be attached to the gas meter via the adapter attachment terminal cover to form a unit.

  According to the present invention, switching between the case where the gas meter is used alone and the case where the gas meter is attached and used is made possible by exchanging the normal terminal cover and the adapter attaching terminal cover. Since it is only necessary to replace the terminal cover without making any changes on the side of the gas meter, switching can be performed easily and quickly.

  Here, when the adapter is used attached to the gas meter, it is desirable to appropriately route the wiring between the adapter and the gas meter so that the wiring is not loosened or protrudes outward. For this purpose, the adapter mounting terminal cover is formed with a wiring housing groove for housing the wiring spanned between the adapter and the terminal housing portion, and a part of the wiring is bent at a predetermined angle in the wiring housing groove. The bent groove portion to be accommodated is formed in advance.

  When using the gas meter with an adapter attached, attach the adapter mounting terminal cover to the meter case to seal the opening, attach the adapter to the front of the adapter mounting terminal cover cover, and connect the wiring to the wiring receiving groove. Can be arranged along. Further, it is possible to prevent the wiring from being detached from the wiring housing groove by utilizing the engaging force generated between the folding groove portion and the folded wiring portion of the wiring housed in the folding groove portion.

  In addition, when the adapter mounting portion is provided on the front face of the adapter mounting terminal cover and the back side of the cover is attached to the meter case, a wiring receiving groove is arranged on the back face of the cover so that it cannot be seen from the outside. A wiring hole that penetrates from the front surface of the cover to the back surface of the cover and connects to the wiring housing groove may be formed. In this case, for example, the wiring is connected to the terminal of the gas meter, the opening is closed, the wiring drawn out from the opening is accommodated in the wiring accommodation groove, and then drawn into the adapter side terminal through the through hole and connected to the terminal. After that, close the adapter terminal block cover.

  Further, the terminal cover is generally fixed with screws 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. As with the terminal cover, the adapter mounting terminal cover is screwed in to the meter case. Through the adapter side of the adapter mounting terminal cover, the adapter side of the cover is threaded from the front of the cover to the back of the cover. A hole should be formed.

  When the gas meter is used with an adapter attached, after removing the terminal cover, the adapter attaching terminal cover is screwed to the meter case, and the adapter is attached to the adapter attaching portion of the adapter attaching terminal cover. The cover side screw through hole exposed on the front surface of the adapter mounting terminal cover and the head of the cover mounting screw attached to the screw through hole may be covered with the adapter. In this way, it is effective to prevent the adapter attaching terminal cover to which the adapter is attached from being removed from the gas meter due to mischief or the like.

  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 portion of the adapter mounting terminal cover, and the adapter side that passes from the adapter front side to the adapter back side A screw hole may be formed.

  In this case, it is desirable to provide a positioning mechanism for easily performing the positioning operation of the adapter with respect to the adapter mounting terminal cover, that is, the operation of positioning the adapter side screw through hole in the adapter mounting screw hole. That is, a cover side positioning portion for positioning the adapter is provided in 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 adapter back surface of the adapter. It is desirable.

  Furthermore, after screwing the adapter, it is desirable to cover the adapter side screw through hole and the head of the adapter mounting screw exposed on the front surface of the adapter with an adapter cover mounted on the front surface of the adapter. In this case, as the adapter mounting screw exposed on the front surface of the adapter, a screw called a tamper-proof screw or a tamper-proof screw may be used.

  Next, the adapter unit of the gas meter used by being attached to the gas meter having the above-described configuration according to the present invention is provided with the adapter having the above-described configuration for adding a predetermined function to the gas meter, and the cover portion and the adapter functioning as a terminal cover. It has the terminal cover for adapter attachment of the said structure provided with the possible adapter attachment part, It is characterized by the above-mentioned.

It is explanatory drawing which shows the switching between the case of the independent specification used by the gas meter alone in embodiment of this invention, and the adapter attachment specification which attaches and uses an adapter. It is the front view which shows the gas meter of adapter attachment specification, a side view, and a rear view. It is a disassembled perspective view which shows the gas meter of adapter attachment specification. It is the front side perspective view and back side perspective view which show a terminal cover, and the front side perspective view and back side perspective view which show the terminal cover for adapter attachment. It is the front side perspective view which shows an example of an adapter, the back side perspective view, the front view, the rear view, and the front view of the state which removed the adapter cover.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing switching between a single-use gas meter used alone and an adapter-attached gas meter attached with an adapter. FIG. 2 (a) is a front view showing a gas meter of adapter mounting specification, FIG. 2 (b) is a side view thereof, and FIG. 2 (c) is a rear view thereof. FIG. 3 is an exploded perspective view of a gas meter of adapter mounting specification.

  (State A) in FIG. 1 shows a gas meter 1A having a single specification. The single-use gas meter 1 </ b> A 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 is 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 the integrated gas value on the basis of 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 disposed.

  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 part of the display unit 5 in the meter case 2 by screwing. 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 sealed opening 8 of the terminal accommodating portion 7 is exposed. In the terminal accommodating portion 7, communication terminals for communicating with the outside are arranged. The opening 8 is sealed in an airtight state by the terminal cover 6 with a rectangular frame-shaped seal 9 interposed therebetween.

  When the single-spec gas meter 1A shown in (State A) is used in an adapter mounting specification in which an adapter 20 having a function such as a subtractor function is used, the terminal cover 6 is attached as shown in (State B). Remove. Next, instead of the terminal cover 6, an adapter mounting terminal cover 30 prepared in advance is attached to the meter case 2, and the adapter is switched to the adapter mounting specification gas meter 1 </ b> C shown in (state C). In the following, the 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.

  The adapter attachment terminal cover 30 includes a cover portion 31 that functions as the terminal cover 6 and an adapter attachment portion 32 to which the adapter 20 can be attached. The cover portion 31 of the adapter attachment terminal cover 30 is screwed to the meter case 2 via the seal 9. The opening 8 is sealed in an airtight state by the cover portion 31. Further, the adapter 20 can be screwed to the adapter mounting portion 32 on the front surface of the adapter mounting terminal cover 30 attached to the meter case 2.

  Thus, in order to switch the gas meter 1 </ b> A to the gas meter 1 </ b> C of the adapter mounting specification, the adapter unit 50 including the adapter mounting terminal cover 30 and the adapter 20 is prepared in advance. When the adapter-attached gas meter 1C is returned to the single-use gas meter 1A, the adapter 20 and the adapter-attaching terminal cover 30 may be removed, the normal terminal cover 6 may be attached, and the opening 8 may be sealed.

(Terminal cover)
4A and 4B are a front side perspective view and a rear side perspective view showing the terminal cover 6, respectively. FIGS. 4C and 4D are a front side perspective view showing the adapter mounting terminal cover 30, and FIGS. It is a back side perspective view.

  Referring to FIGS. 1 and 4 (a) and 4 (b), the terminal cover 6 includes a front plate 6a having a horizontally elongated rectangular shape corresponding to the opening 8 formed in the meter case 2 of the gas meter 1, and its front plate 6a. And a narrow bottom plate 6b bent at a right angle rearward from the lower end edge. Screw holes 6c and 6d for screwing pass 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. In addition, wiring notches 6g and 6h 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 8 a and 8 b corresponding to the screw through holes 6 c and 6 d 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 right and left cover attaching screws 11a and 11b.

(Adapter mounting terminal cover)
Referring to FIGS. 2, 3, 4 (c) and 4 (d), the adapter mounting terminal cover 30 is, for example, a plate-shaped resin molded product having a rectangular outline, and the upper portion thereof is a cover portion 31. The cover front surface 33 is an adapter mounting portion 32. The upper cover portion 31 is a portion having a size capable of sealing the opening 8 of the meter case 2.

  A rectangular frame 35 that can be fitted into the opening 8 is formed on the cover rear surface 34 side of the cover portion 31, and this inner portion is reinforced by ribs formed in a lattice shape. A seal 9 is attached between the cover rear surface portion surrounding the rectangular frame 35 and the outer peripheral edge portion of the opening 8 of the meter case 2. Cover side screw through holes 36a, 36b corresponding to the cover mounting screw holes 8a, 8b on the meter case 2 side are formed in the left and right end portions of the cover portion 31. The cover-side screw through holes 36a and 36b penetrate from the cover front surface 33 to the cover back surface 34. With the cover mounting screws 11a and 11b, the cover portion 31 of the adapter mounting terminal cover 30 can be fixed to the meter case 2 with the seal 9 interposed therebetween, and the opening 8 can be sealed in a sealed state.

  In the cover back surface 34, the lower portion of the cover portion 31 protrudes to the back surface side and becomes a ribbed portion 37 reinforced by ribs formed in a lattice shape as a whole. A lateral rib 37 a that extends in the lateral direction and is formed at the upper end of the ribbed portion 37 is a portion that seals the bottom opening portion of the opening 8 of the meter case 2. A cut 37b for wiring is formed in the horizontal rib 37a.

  A wiring receiving groove 38 is formed in the ribbed portion 37. As shown in FIGS. 4D and 2C, the wiring receiving groove 38 includes an upper groove portion 38a extending linearly downward from one wiring cut 37b at the upper end of the ribbed portion 37. A bent groove portion 38b that is bent 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 are provided. The lower end portion of the lower groove portion 38 c communicates with the cover front surface 33 side through a wiring hole 39 penetrating from the cover back surface 34 to the cover front surface 33. A wiring guide 40 protruding in a trapezoidal shape is formed in the front portion of the lower surface of the cover 33 where the wiring hole 39 is open.

  An adapter positioning portion including a screw 41 is provided on the adapter mounting portion 32 of the cover front surface 33. The screw 41 (see FIG. 3) is attached to a screw hole 42 formed in the cover front surface 33. The screw hole 42 is located at the center in the width direction on the upper end side of the cover front surface 33. The screw 41 is screwed and fixed in the screw hole 42 so that the head of the screw 41 is lifted from the cover front surface 33 by a predetermined amount. 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.

(adapter)
FIGS. 5A and 5B are a front perspective view and a rear perspective view showing the adapter 20, and FIGS. 5C to 5E are a front view, a rear view, and an adapter cover of the adapter removed. It is a front view of a state.

  Referring to FIGS. 2 and 5, the adapter 20 has a rectangular outline shape having a size corresponding to the adapter mounting terminal cover 30, and the front surface 21 a of the adapter case 21 has a display unit 22, Operation buttons 23 and the like are arranged. Further, as shown in FIG. 3 and FIG. 5 (e), an opening 21 b is formed on the lower side of the display unit 22, and this opening 21 b sandwiches a rectangular frame-shaped seal 24 and is fixed by an adapter cover 25. Sealed in a sealed state. In 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 standard, and the control unit for communicating with the outside A communication terminal 26 is arranged.

  The adapter cover 25 is formed with screw through holes 25a and 25b on the left and right edges thereof. Screw holes 21 c and 21 d are formed in the adapter case 21, and the adapter cover 25 is screwed to the adapter case 21. In this example, screws 27a and 27b called tamper-proof screws or tamper-proof screws are attached.

  Here, an adapter side positioning portion that can be engaged with the cover side positioning portion is provided on the adapter rear surface 21e of the adapter 20 in the center in the width direction of the upper portion thereof. The adapter side positioning portion includes a screw engaging groove 28 for positioning. The screw engaging groove 28 opens downward, and the leg portion of the positioning screw 41 can be inserted from below. The lower end opening of the screw engagement groove 28 is a screw guide surface that expands leftward and rightward. In FIG. 2, the positioning screw 41 is attached to the screw hole 42 of the cover front surface 33 of the adapter attachment terminal cover 30 in a state where the head is lifted, and the screw 41 is inserted into the screw engagement groove 28 of the adapter 20. Thus, the adapter 20 is attached from the upper side along the cover front surface 33. As a result, the adapter 20 can be positioned on the adapter mounting portion 32 of the cover front surface 33.

  The adapter case 21 has an adapter-side screw hole 21f formed at one corner of the lower end of the opening 21b that is covered with the adapter cover 25. When the adapter 20 is positioned on the adapter mounting portion 32 of the cover front surface 33 as described above, the adapter side screw through hole 21f and the adapter mounting screw hole 44 of the adapter mounting terminal cover 30 coincide with each other. In this state, the adapter 20 can be fixed to the adapter mounting terminal cover 30 using the adapter mounting screw 43. After the adapter mounting screw 43 is stopped, when the adapter cover 25 is fixed to the adapter case 21 with the screws 27a and 27b, the opening 21b is sealed. Further, the adapter side screw through hole 21f and the adapter mounting screw 43 are also covered.

  As described above, in this example, the adapter 20 is provided with 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 attached. The terminal cover 30 is prepared in advance as the adapter unit 50. By simply attaching the adapter unit 50 to the gas meter 1B with the terminal cover 6 removed from the single-use gas meter 1A, the adapter-attached specification gas meter 1C can be configured.

  The adapter mounting terminal cover 30 has a wiring housing groove 38 for housing the wiring 45 spanned between the adapter 20 and the gas meter 1, and a part of the wiring 45 is predetermined in the wiring housing groove 38. For example, a bent groove portion 38b is housed in a state of being bent at a right angle. Therefore, the wiring 45 can be reliably routed in a state where the wiring 45 cannot be loosened. In addition, the adapter attachment terminal cover 30 has a wiring hole 39 penetrating from the cover front surface 33 to the cover back surface 34 and connected to the wiring housing groove 38. Since the wiring 45 can be routed in an inconspicuous state from the outside, it is possible to prevent a deterioration in the appearance quality of the gas meter.

  Furthermore, 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 cover front surface 33 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 fix the adapter mounting terminal cover 30 to the meter case 2 are not exposed to the outside. It is possible to prevent the adapter attachment terminal cover 30 from being removed due to mischief or the like.

  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 has a side from the adapter front side to the adapter back side. An adapter-side screw-through hole 21f penetrating through is formed. The adapter 20 is screwed with an adapter cover 25 that covers the adapter side screw hole 21f exposed on the front side of the adapter. The adapter mounting screw 43 that screws the adapter 20 to the adapter mounting terminal cover 30 is not exposed to the outside. Further, for fixing 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.

  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. A screw engagement groove 28 that is an adapter side positioning portion that can be engaged with the positioning screw 41 is formed. Therefore, the operation of positioning and screwing the adapter 20 to the adapter mounting terminal cover 30 can be easily performed.

DESCRIPTION OF SYMBOLS 1 Gas meter 1A Single specification gas meter 1B Gas meter 1C with terminal cover removed Adapter meter specification gas meter 2 Meter case 3 Gas inlet 4 Gas outlet 5 Display section 6 Terminal cover 6a Front plate 6b Bottom plate 6c, 6d Screw through hole 6e Rear face 6f Rectangular frame 6g, 6h Notch 7 Terminal accommodating part 8 Opening part 8a, 8b Cover mounting screw hole 9 Seal 11a, 11b Cover mounting screw 20 Adapter 21 Adapter case 21a Adapter front face 21b Opening part 21c, 21d Screw hole 21e Adapter back face 21f Adapter side screw through hole 22 Display section 23 Operation button 24 Seal 25 Adapter cover 25a, 25b Screw through hole 26 Communication terminal 27a, 27b Screw 28 Screw engaging groove 30 Adapter mounting terminal cover 31 Cover portion 32 Adapter mounting portion 33 Cover Front 4 Cover rear surface 35 Rectangular frame 36a, 36b Cover side screw through hole 37 Ribbed portion 37a Lateral rib 37b Cut 38 Wiring receiving groove 38a Upper groove portion 38b Bending groove portion 38c Lower groove portion 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 (10)

A gas meter adapter mounting method for mounting an adapter used to add a predetermined function to a gas meter to the gas meter,
The gas meter includes a communication terminal for communicating with the outside, the communication terminal is disposed 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 It can be sealed 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 to which the adapter can be mounted;
When using the gas meter alone, the terminal cover is attached to the meter case to seal the opening,
When using the adapter attached to the gas meter, instead of the terminal cover, the adapter mounting terminal cover is attached to the meter case and the opening is sealed,
A gas meter adapter mounting method for mounting the adapter on the adapter mounting portion of the adapter mounting terminal cover mounted on the meter case. In claim 1,
Formed in the adapter mounting terminal cover is a wiring housing groove for housing the wiring spanned between the adapter and the terminal housing portion, and a part of the wiring is bent at a predetermined angle in the wiring housing groove. Forming a bent groove part to be accommodated in a state,
When using the adapter attached to the gas meter,
The adapter attachment terminal cover is attached to the meter case to seal the opening,
Attach the adapter to the front face of the adapter mounting terminal cover,
An adapter mounting method for a gas meter that prevents the wiring from being detached from the wiring receiving groove by utilizing an engaging force between the bent groove portion and the bent wiring portion of the wiring received in the bending groove portion. In claim 2,
Provide the adapter mounting portion on the front of the cover,
The wiring receiving groove is disposed on the back surface of the adapter mounting terminal cover,
In the adapter mounting terminal cover, a wiring hole that penetrates from the front surface of the cover to the back surface of the cover and connects to the wiring receiving groove is formed.
When using the adapter attached to the gas meter,
The adapter mounting terminal cover is attached to the meter case so that the back of the cover faces the gas meter, and the opening is sealed,
Attach the adapter to the front face of the adapter attachment terminal cover,
A gas meter adapter mounting method in which the wiring is bridged through the wiring hole between the adapter and the terminal accommodating portion. In claim 3,
The meter case has a cover mounting screw hole for screwing the terminal cover,
In the adapter mounting terminal cover, the adapter mounting portion on the front surface of the cover is formed with a cover-side screw through hole penetrating from the front surface of the cover to the back surface of the cover,
When using the adapter attached to the gas meter,
Screw the adapter attachment terminal cover to the meter case,
The cover-side screw through-hole exposed on the front surface of the adapter-attaching terminal cover and the head of the cover-attaching screw attached to the cover-side screw through-hole are covered by the adapter cover attached to the front surface of the cover. Gas meter adapter mounting method. In claim 4,
A cover side positioning portion for positioning the adapter is provided at 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 adapter back surface 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 passes through the adapter from the adapter front side to the adapter back side. Forming a screw hole,
An adapter cover that covers the adapter side screw through hole exposed on the adapter front side can be attached to the adapter,
When using the adapter attached to the gas meter,
Screw the adapter attachment terminal cover to the meter case,
Engage the adapter side positioning portion of the adapter 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 attach the adapter to the adapter mounting terminal cover.
The adapter mounting method of the gas meter which covers the adapter side screw through hole exposed on the adapter front surface and the head of the adapter mounting screw with the adapter cover mounted on the adapter front surface. An adapter unit of a gas meter used by being attached to a gas meter,
The gas meter includes a communication terminal for communicating with the outside, the communication terminal is disposed 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 Can be sealed by the terminal cover,
An adapter for adding a predetermined function to the gas meter;
An adapter unit of a gas meter having 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. In claim 6,
The adapter mounting terminal cover has a wiring accommodating groove for accommodating a wiring spanned between the adapter and the gas meter,
The said wiring accommodation groove | channel is an adapter unit of the gas meter provided with the bending groove part which accommodates in a state which bent a part of said wiring in the predetermined angle. In claim 7,
The adapter mounting terminal cover is
A back of the cover having the wiring receiving groove;
A cover front surface having an adapter mounting portion for mounting the adapter;
An adapter unit of a gas meter having a wiring hole penetrating from the front surface of the cover to the back surface of the cover and connected to the wiring housing groove. In claim 8,
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 of the front surface of the cover to be screwed to the meter case of the gas meter.
The adapter unit of a gas meter, wherein the screw through hole exposed to the front surface of the adapter attachment terminal cover is formed at a position covered by the adapter attached to the adapter attachment portion. In claim 9,
In the adapter mounting portion of the adapter mounting terminal cover, a cover side positioning portion for positioning the adapter, and an adapter mounting screw hole for screwing the adapter are formed,
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 penetrating from the adapter front side to the adapter back side. ,
An adapter unit of a gas meter in which an adapter cover that covers the adapter side screw hole exposed on the adapter front surface side is detachably attached to the adapter.