JP6259677B2 - Inspection jig - Google Patents

Inspection jig Download PDF

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JP6259677B2
JP6259677B2 JP2014037315A JP2014037315A JP6259677B2 JP 6259677 B2 JP6259677 B2 JP 6259677B2 JP 2014037315 A JP2014037315 A JP 2014037315A JP 2014037315 A JP2014037315 A JP 2014037315A JP 6259677 B2 JP6259677 B2 JP 6259677B2
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gas sensor
gas
inspection jig
unit
main body
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JP2015161605A (en
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祐一 舩橋
祐一 舩橋
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New Cosmos Electric Co Ltd
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Description

本発明は、ガス検知器が正常に動作するか否かを点検する際に用いる点検治具の技術に関する。   The present invention relates to a technique of an inspection jig used when inspecting whether or not a gas detector operates normally.

従来、ガス検知器に関する技術は、種々知られている(特許文献1参照)。ガス検知器は、検知部を備え、検知部のガスセンサは、例えば、酸素センサ、COセンサ、または、都市ガスセンサ等で構成される。   Conventionally, various techniques relating to gas detectors are known (see Patent Document 1). The gas detector includes a detection unit, and the gas sensor of the detection unit includes, for example, an oxygen sensor, a CO sensor, or a city gas sensor.

また、ガス検知器が正常に動作するか否かを点検するために、ガス検知器の検知部に装着されて用いられる、点検治具がある。
前記点検治具には、底部を有する有底略円筒状に構成される本体を備え、本体に、検知部のガスセンサに被検知ガスを供給する供給部と、検知部のガスセンサで検知した被検知ガスを排出する排出部と、が配置されて構成されるものがある。
前記点検治具では、検知部のガスセンサを点検する場合、例えば、被検知ガスが収納されるガスバックが接続され、ポンプ(不図示)によって圧送されることによって、ガスバックに収納される被検知ガスが、供給部から点検治具内に供給され、検知器のガスセンサに供給される。そして、検知器のガスセンサに検知された被検知ガスは、本体の排出部から点検治具外に排出される。
In addition, there is an inspection jig that is used by being mounted on a detection unit of a gas detector in order to check whether or not the gas detector operates normally.
The inspection jig includes a main body configured in a substantially bottomed cylindrical shape having a bottom, a supply unit that supplies a gas to be detected to the gas sensor of the detection unit, and a detection detected by the gas sensor of the detection unit. There is a configuration in which a discharge unit that discharges gas is arranged.
In the inspection jig, when the gas sensor of the detection unit is inspected, for example, a gas bag in which a gas to be detected is stored is connected and pumped by a pump (not shown), thereby being detected in the gas bag. The gas is supplied from the supply unit into the inspection jig and supplied to the gas sensor of the detector. And the to-be-detected gas detected by the gas sensor of a detector is discharged | emitted out of an inspection jig from the discharge part of a main body.

特開2003−215001号公報JP 2003-215001 A

しかしながら、前記点検治具では、例えば、本体の底部に供給部が配置され、本体の側部に排出部が配置されて、供給部と排出部とがまとまって配置されていない。
前記点検治具では、このように供給部と排出部とがまとまって配置されていないので、点検治具のコンパクト化が十分に図れておらず、また点検治具の点検作業を行うときに、その取扱いが煩雑に感じる場合があった。
However, in the inspection jig, for example, the supply unit is arranged at the bottom of the main body, the discharge unit is arranged at the side of the main body, and the supply unit and the discharge unit are not arranged together.
In the inspection jig, since the supply unit and the discharge unit are not arranged in this manner, the inspection jig is not sufficiently compact, and when the inspection jig is inspected, The handling sometimes felt complicated.

発明は以上の如き状況に鑑みてなされたものであり、点検治具のコンパクト化を図り、取扱いが容易となる点検治具を提供することを課題とする。   The present invention has been made in view of the above situation, and an object of the present invention is to provide an inspection jig that is easy to handle by reducing the size of the inspection jig.

本発明の解決しようとする課題は以上の如くであり、次にこの課題を解決するための手段を説明する。   The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

即ち、本願に開示する点検治具においては、ガスセンサが備えられるガス検知器に装着可能であって、被検知ガスを前記ガスセンサに供給する供給部と、前記ガスセンサで検知した前記被検知ガスを排出する排出部と、を備え、前記供給部と前記排出部とが並置され、前記供給部と前記排出部とは、前記ガスセンサの検知面に対向してそれぞれ配置されるものである。 That is, the inspection jig disclosed in the present application can be mounted on a gas detector equipped with a gas sensor, and supplies a gas to be detected to the gas sensor, and discharges the gas to be detected detected by the gas sensor. And the supply unit and the discharge unit are juxtaposed, and the supply unit and the discharge unit are respectively arranged to face the detection surface of the gas sensor .

本願に開示する点検治具は、上記構成を基本として、以下のような態様をとることができる。
本願に開示する点検治具においては、前記供給部の前記ガスセンサ側の開口が前記ガスセンサの検知口からずれるようにして配置されることが好ましい。
The inspection jig disclosed in the present application can take the following aspects based on the above configuration.
In the inspection jig disclosed in the present application, it is preferable that the opening on the gas sensor side of the supply unit is arranged so as to be displaced from the detection port of the gas sensor .

本願に開示する点検治具においては、前記供給部は、下流側の流路の幅が上流側に比べて小さく構成されることが好ましい。 In the inspection jig disclosed in the present application, it is preferable that the supply unit is configured so that the width of the downstream flow path is smaller than that of the upstream side .

本願に開示する点検治具においては、前記供給部の前記ガスセンサ側の開口が前記ガスセンサの検知面に近接して配置されることが好ましい。 In the inspection jig disclosed in the present application, it is preferable that an opening on the gas sensor side of the supply unit is disposed close to a detection surface of the gas sensor .

本願に開示する点検治具においては、ガスセンサの検知面に対向するように突出する凸部を備え、前記供給部の前記ガスセンサ側の開口と前記排出部の前記ガスセンサ側の開口とが、前記凸部における前記ガスセンサの検知面側にそれぞれ並置して形成されることが好ましい。 The inspection jig disclosed in the present application includes a protruding portion that protrudes so as to face the detection surface of the gas sensor, and the opening on the gas sensor side of the supply portion and the opening on the gas sensor side of the discharge portion are the protrusions. It is preferable that they are formed side by side on the detection surface side of the gas sensor .

本発明の効果として、以下に示すような効果を奏する。
即ち、本発明によれば、点検治具のコンパクト化を図り、取扱いが容易となる。
As effects of the present invention, the following effects can be obtained.
That is, according to the present invention, the inspection jig can be made compact and easy to handle.

本発明の実施形態に係る点検治具と検知器とを示した一部断面図。The partial cross section figure which showed the inspection jig and detector which concern on embodiment of this invention. 図1に示すA‐A断面図。AA sectional drawing shown in FIG. 本発明の実施形態に係る点検治具と検知器とが分離した状態を示した正面図。The front view which showed the state which the inspection jig and detector which concern on embodiment of this invention isolate | separated. 同じく点検治具を示した正面図。The front view which similarly showed the inspection jig. 同じく点検治具を示した平面図。The top view which similarly showed the inspection jig. 同じく点検治具の本体を示した正面図。The front view which similarly showed the main body of the inspection jig. 同じく点検治具の本体を示した平面図。The top view which similarly showed the main body of the inspection jig. 同じく点検治具の本体を示した底面図。The bottom view which similarly showed the main body of the inspection jig. 同じく点検治具の本体を示した斜視図。The perspective view which similarly showed the main body of the inspection jig. 本発明の実施形態に係る点検治具と検知器とを示した一部断面図。The partial cross section figure which showed the inspection jig and detector which concern on embodiment of this invention. 同じく点検治具と検知器とを示した一部断面図。The partial sectional view which showed the inspection jig and the detector similarly. 同じく点検治具と検知器とを示した一部断面図。The partial sectional view which showed the inspection jig and the detector similarly. 同じく検知器のガスセンサを示す平面拡大図。The plane enlarged view which similarly shows the gas sensor of a detector. 同じく検知器のガスセンサを示す平面拡大図。The plane enlarged view which similarly shows the gas sensor of a detector.

次に、図1から図14に記載の点検治具1および検知器50について説明する。
なお、以下において、点検治具1および検知器50における被検知ガスが流入する側を、点検治具1および検知器50の先端側として説明する。
被検知ガスは、検知器50が検知対象とするガス以外にも、点検用に用いられるガスなど、ガスセンサ53が検知可能なガスを含む。
Next, the inspection jig 1 and the detector 50 described in FIGS. 1 to 14 will be described.
In addition, below, the side into which the to-be-detected gas flows in the inspection jig 1 and the detector 50 is demonstrated as the front end side of the inspection jig 1 and the detector 50.
The gas to be detected includes gas that can be detected by the gas sensor 53, such as gas used for inspection, in addition to the gas to be detected by the detector 50.

まず、点検治具1が装着される検知器50について説明する。
検知器50は、所定のガスの濃度を検知する。
図1乃至図3に示すように、検知器50は、検知部51と、検知器本体(不図示)と、ケーブル52と、を備え、検知部51と検知器本体とがケーブル52によって接続されて構成される。検知部51は、外部環境の変化を検知するガスセンサ53を備える。検知器本体は、検知部51のガスセンサ53が外部環境の変化を検知した際に出力する検知出力を、ケーブル52を介して受信して演算する。ケーブル52は、例えば、長さが5mのもので構成される。
First, the detector 50 to which the inspection jig 1 is attached will be described.
The detector 50 detects the concentration of a predetermined gas.
As shown in FIGS. 1 to 3, the detector 50 includes a detector 51, a detector main body (not shown), and a cable 52, and the detector 51 and the detector main body are connected by the cable 52. Configured. The detection unit 51 includes a gas sensor 53 that detects a change in the external environment. The detector main body receives and calculates the detection output that is output when the gas sensor 53 of the detection unit 51 detects a change in the external environment via the cable 52. The cable 52 is configured with a length of 5 m, for example.

検知部51のガスセンサ53は、酸素センサ、COセンサ、または、都市ガスセンサ等で構成される。ガスセンサ53では、例えば、酸素センサは酸素ガスを検出でき、COセンサは不完全燃焼で発生する一酸化炭素ガスを検出でき、都市ガスセンサは炭化水素ガス等の漏洩ガスを検出することができるものであれば、公知の半導体式センサ素子や接触燃焼式センサ素子等が使用できる。
以下において、検知部51のガスセンサ53は、被検知ガスとして酸素ガスを検知する酸素ガスセンサであるものとして説明する。検知部51のガスセンサ53は、検知面53aを有し、検知面53aに形成される検知口53bから流入する被検知ガスを検知する。検知部51のガスセンサ53の検知面53aの直径は、例えば、80mmに構成される。
The gas sensor 53 of the detection unit 51 includes an oxygen sensor, a CO sensor, a city gas sensor, or the like. In the gas sensor 53, for example, the oxygen sensor can detect oxygen gas, the CO sensor can detect carbon monoxide gas generated by incomplete combustion, and the city gas sensor can detect leakage gas such as hydrocarbon gas. If it exists, a well-known semiconductor type sensor element, a contact combustion type sensor element, etc. can be used.
Hereinafter, the gas sensor 53 of the detection unit 51 will be described as an oxygen gas sensor that detects oxygen gas as the gas to be detected. The gas sensor 53 of the detection unit 51 has a detection surface 53a, and detects a gas to be detected that flows from a detection port 53b formed in the detection surface 53a. The diameter of the detection surface 53a of the gas sensor 53 of the detection unit 51 is configured to be 80 mm, for example.

検知部51は、キャップ部材54と、キャップカバー55と、センサケース56と、ケーブルコネクタ57と、を備える。   The detection unit 51 includes a cap member 54, a cap cover 55, a sensor case 56, and a cable connector 57.

検知部51のキャップ部材54は、筒状に形成され、検知面53aおよび検知口53bを先端側に向けてガスセンサ53を収容する。キャップ部材54は、その先端側の開口部54aから内部(ガスセンサ53側)に被検知ガスが流入する構成とされる。キャップ部材54は、略四角棒状のバー54bを有する。バー54bは、作業者の手指や異物等がキャップ部材54の内側に開口部54aから侵入して、ガスセンサ53の検知面53aに接触することを防止するものであり、開口部54aを横断するように配置される。キャップ部材54の開口部54aの近傍には、Oリング58と防水フィルタ59とが配置される。Oリング58と防水フィルタ59とは、キャップ部材54のバー54bとガスセンサ53の検知面53aとの間に配置される。   The cap member 54 of the detection unit 51 is formed in a cylindrical shape and accommodates the gas sensor 53 with the detection surface 53a and the detection port 53b facing the front end side. The cap member 54 is configured such that the gas to be detected flows into the inside (gas sensor 53 side) from the opening 54a on the tip side. The cap member 54 has a substantially square bar 54b. The bar 54b prevents the operator's fingers, foreign matter, and the like from entering the inside of the cap member 54 from the opening 54a and coming into contact with the detection surface 53a of the gas sensor 53, so as to cross the opening 54a. Placed in. In the vicinity of the opening 54a of the cap member 54, an O-ring 58 and a waterproof filter 59 are disposed. The O-ring 58 and the waterproof filter 59 are disposed between the bar 54 b of the cap member 54 and the detection surface 53 a of the gas sensor 53.

検知部51のキャップカバー55は、弾性体の筒状に形成され、キャップ部材54の周囲を覆う。キャップカバー55は、このことから、例えば、酸素濃度が不明なマンホール内に検知部51を下ろして酸素濃度を測定するときに、検知部51がマンホールの壁面に接触しても検知部51に及ぼす衝撃を緩和する。キャップカバー55は、その先端側の開口部55aから内部(キャップ部材54の開口部54aおよびガスセンサ53側)に被検知ガスが流入する構成とされる。キャップカバー55は、凸条のリブ55bを有する。リブ55bは、キャップカバー55の先端側の外周に沿って配置され、環状に構成される。   The cap cover 55 of the detection unit 51 is formed in an elastic cylindrical shape and covers the periphery of the cap member 54. For this reason, for example, when the oxygen concentration is measured by lowering the detection unit 51 in a manhole whose oxygen concentration is unknown, the cap cover 55 affects the detection unit 51 even if the detection unit 51 contacts the wall surface of the manhole. Reduce the impact. The cap cover 55 is configured such that the gas to be detected flows into the inside (the opening 54a of the cap member 54 and the gas sensor 53 side) from the opening 55a on the tip side. The cap cover 55 has a protruding rib 55b. The rib 55b is disposed along the outer periphery on the tip side of the cap cover 55, and is configured in an annular shape.

検知部51のセンサケース56は、キャップ部材54の基端側の開口部を塞ぐようにキャップ部材54に嵌め込まれる。センサケース56の基端側(ケーブル52側)は、ケーブルコネクタ57と接続される。
なお、点検治具1は、上記構成に限定されず、例えば、ケーブル52を備えずに、検知部51と検知器本体とが一体的に構成されるものであってもよい。
The sensor case 56 of the detection unit 51 is fitted into the cap member 54 so as to close the opening on the proximal end side of the cap member 54. The base end side (cable 52 side) of the sensor case 56 is connected to the cable connector 57.
Note that the inspection jig 1 is not limited to the above configuration, and for example, the detection unit 51 and the detector main body may be configured integrally without including the cable 52.

次に、点検治具1について説明する。
点検治具1は、検知器50の検知部51のガスセンサ53の動作が正常に行えるか否かを点検する際に用いられる。点検治具1では、ガス検知器に装着可能に構成され、検知器50の検知部51の先端部に装着された状態で、前記検知器50を点検する作業が行われる。
図1乃至図9に示すように、点検治具1は、本体10と、供給管20と、排出管30と、を備える。
Next, the inspection jig 1 will be described.
The inspection jig 1 is used when inspecting whether or not the operation of the gas sensor 53 of the detector 51 of the detector 50 can be normally performed. The inspection jig 1 is configured to be attachable to the gas detector, and an operation of inspecting the detector 50 is performed in a state where the inspection jig 1 is attached to the tip of the detection unit 51 of the detector 50.
As shown in FIGS. 1 to 9, the inspection jig 1 includes a main body 10, a supply pipe 20, and a discharge pipe 30.

点検治具1の本体10は、先端側に底部11を有する有底略円筒状に構成される。本体10は、その側部12の内径が検知部51のキャップカバー55のリブ55bの外径と同等に構成される。
本体10の底部11は、その基端側の面の中央部に円板状の突出部を有し、当該基端側の面に段差が形成されて構成される。底部11は、点検治具1が検知部51に装着されたときに、検知部51のガスセンサ53に対向する。
また、本体10は、凸部13と、溝部14と、供給部15と、排出部16と、を有する。
The main body 10 of the inspection jig 1 is formed in a substantially bottomed cylindrical shape having a bottom portion 11 on the distal end side. The main body 10 is configured such that the inner diameter of the side portion 12 is equal to the outer diameter of the rib 55 b of the cap cover 55 of the detection unit 51.
The bottom portion 11 of the main body 10 has a disc-like protruding portion at the center of the base end surface, and a step is formed on the base end surface. The bottom 11 faces the gas sensor 53 of the detection unit 51 when the inspection jig 1 is attached to the detection unit 51.
The main body 10 includes a convex portion 13, a groove portion 14, a supply portion 15, and a discharge portion 16.

本体10の凸部13は、略円柱状に形成される。凸部13は、本体10の底部11の基端側の面(底部11の円板状部分)の中央部に配置される。凸部13は、本体10の底部11から基端側に突出する。凸部13は、その外径が、キャップ部材54の開口部54aの内径およびキャップカバー55の開口部55aの内径よりも小さく構成される。凸部13は、点検治具1が検知部51に装着されたときに、キャップ部材54の開口部54aおよびキャップカバー55の開口部55aの内側に位置する。   The convex portion 13 of the main body 10 is formed in a substantially cylindrical shape. The convex portion 13 is disposed at the center of the base end surface of the bottom portion 11 of the main body 10 (the disc-shaped portion of the bottom portion 11). The convex portion 13 protrudes from the bottom portion 11 of the main body 10 to the proximal end side. The convex portion 13 has an outer diameter smaller than the inner diameter of the opening 54 a of the cap member 54 and the inner diameter of the opening 55 a of the cap cover 55. The convex portion 13 is positioned inside the opening 54 a of the cap member 54 and the opening 55 a of the cap cover 55 when the inspection jig 1 is mounted on the detection unit 51.

本体10の溝部14は、直方体状の溝であり、点検治具1が検知部51に装着されたときに、キャップ部材54のバーが嵌合するように構成される。溝部14は、凸部13の基端側の端部(端面)に形成される。溝部14は、凸部13の基端側の端部を横断するように配置される。   The groove portion 14 of the main body 10 is a rectangular parallelepiped groove, and is configured such that the bar of the cap member 54 is fitted when the inspection jig 1 is attached to the detection portion 51. The groove portion 14 is formed at an end portion (end surface) on the proximal end side of the convex portion 13. The groove part 14 is arrange | positioned so that the edge part of the base end side of the convex part 13 may be crossed.

本体10の供給部15は、被検知ガスが流通する流路として構成される。供給部15は、被検知ガスを検知部51のガスセンサ53に供給する。供給部15は、先端側から基端側に被検知ガスが流通するように構成される。供給部15は、本体10の軸心よりも外側(本体10の側部12側)に配置される。
供給部15は、供給孔15aと供給溝15bとを有し、供給孔15aと供給溝15bとが連通して構成される。先端側に供給孔15aが配置され、基端側(検知部51のガスセンサ53側)に供給溝15bが配置される。
The supply unit 15 of the main body 10 is configured as a flow path through which the gas to be detected flows. The supply unit 15 supplies the gas to be detected to the gas sensor 53 of the detection unit 51. The supply unit 15 is configured such that the gas to be detected flows from the distal end side to the proximal end side. The supply unit 15 is arranged outside the axis of the main body 10 (on the side 12 side of the main body 10).
The supply unit 15 includes a supply hole 15a and a supply groove 15b, and the supply hole 15a and the supply groove 15b communicate with each other. The supply hole 15a is disposed on the distal end side, and the supply groove 15b is disposed on the proximal end side (the gas sensor 53 side of the detection unit 51).

本体10の供給部15の供給孔15aは、円柱状の孔であり、底部11の先端側の面に形成される。供給孔15aは、底部11の基端側の面に至らないように(底部11を貫通しないように)構成される。供給孔15aは、供給管20を着脱可能に構成される。供給孔15aは、その内周面に供給管20の基端部と螺合可能なネジ溝を有する。   The supply hole 15 a of the supply unit 15 of the main body 10 is a columnar hole, and is formed on the tip side surface of the bottom 11. The supply hole 15a is configured not to reach the base end side surface of the bottom portion 11 (so as not to penetrate the bottom portion 11). The supply hole 15a is configured so that the supply pipe 20 can be attached and detached. The supply hole 15 a has a thread groove that can be screwed to the proximal end portion of the supply pipe 20 on the inner peripheral surface thereof.

本体10の供給部15の供給溝15bは、凸部13の基端側の端部から凸部13の突出方向(凸部13の軸心方向)に沿って凸部13の側面を切欠くとともに底部11の基端側の面に円柱状の孔を形成して、供給孔15aと連通する。供給溝15bは、凸部13においては断面が扇形状に形成される。
供給部15の供給溝15bにおいては、その底部11の基端側の面の孔(円柱状の孔)、その凸部13を切欠く部分とキャップ部材54の開口部54aの内面とで形成される空間、および、その凸部13を切欠く部分とキャップカバー55の開口部55aの内面とで形成される空間によって、被検知ガスの流通する流路が構成される。
The supply groove 15b of the supply portion 15 of the main body 10 cuts out the side surface of the convex portion 13 along the projecting direction of the convex portion 13 (the axial direction of the convex portion 13) from the proximal end of the convex portion 13. A cylindrical hole is formed on the base end side surface of the bottom 11 and communicates with the supply hole 15a. The supply groove 15 b is formed in a fan shape in cross section at the convex portion 13.
The supply groove 15 b of the supply unit 15 is formed by a hole on the base end side of the bottom part 11 (columnar hole), a part where the convex part 13 is cut out, and an inner surface of the opening part 54 a of the cap member 54. And a space formed by a portion where the convex portion 13 is cut out and an inner surface of the opening 55a of the cap cover 55 constitute a flow path through which the gas to be detected flows.

本体10の排出部16は、被検知ガスが流通する流路として構成される。排出部16は、ガスセンサ53で検知した被検知ガスを排出する。排出部16は、本体10の軸心よりも外側(本体10の側部12側)に配置される。
排出部16は、排出孔16aで構成される。
The discharge part 16 of the main body 10 is configured as a flow path through which the gas to be detected flows. The discharge unit 16 discharges the detected gas detected by the gas sensor 53. The discharge unit 16 is disposed outside the axis of the main body 10 (on the side 12 side of the main body 10).
The discharge part 16 includes a discharge hole 16a.

本体10の排出部16の排出孔16aは、円柱状の孔であり、底部11の先端側の面から凸部13の基端側の面に貫通する。排出孔16aは、その先端側部分に排出管30を着脱可能に構成される。排出孔16aは、その先端側部分の内周面に排出管30の基端部と螺合可能なネジ溝を有する。排出孔16aの基端側部分は、先端側部分よりも小径に構成される。排出孔16aの基端側部分は、その幅が排出孔16aの先端側部分の幅よりも小さく構成される。   The discharge hole 16 a of the discharge portion 16 of the main body 10 is a cylindrical hole, and penetrates from the surface on the distal end side of the bottom portion 11 to the surface on the proximal end side of the convex portion 13. The discharge hole 16a is configured such that the discharge pipe 30 can be attached to and detached from the tip end portion thereof. The discharge hole 16a has a thread groove that can be screwed to the proximal end portion of the discharge pipe 30 on the inner peripheral surface of the distal end side portion thereof. The proximal end portion of the discharge hole 16a is configured to have a smaller diameter than the distal end portion. The width of the base end side portion of the discharge hole 16a is smaller than the width of the front end side portion of the discharge hole 16a.

点検治具1の供給管20は、管状の部材であり、その基端部の外周面に本体10の供給部15の供給孔15aと螺合可能なネジ溝を有する。供給管20の軸心方向中途部の外面は、側方に突出する六角状に形成される。
供給管20は、本体10の供給部15の供給孔15aに螺合することによって、供給部15に装着される。供給管20は、本体10の底部11から先端側に突出するように配置される。供給管20は、供給部15に装着された状態で、供給部15(供給孔15a)と連通する。
供給管20の中途部と本体10の底部11の先端側の面との間には、ガスケット21が設けられる。
The supply pipe 20 of the inspection jig 1 is a tubular member, and has a thread groove that can be screwed into the supply hole 15a of the supply part 15 of the main body 10 on the outer peripheral surface of the base end part. The outer surface of the supply tube 20 in the axial center part is formed in a hexagonal shape protruding sideways.
The supply pipe 20 is attached to the supply unit 15 by being screwed into the supply hole 15 a of the supply unit 15 of the main body 10. The supply pipe 20 is disposed so as to protrude from the bottom 11 of the main body 10 to the front end side. The supply pipe 20 communicates with the supply unit 15 (supply hole 15a) while being attached to the supply unit 15.
A gasket 21 is provided between the midway portion of the supply pipe 20 and the surface of the bottom portion 11 of the main body 10 on the front end side.

点検治具1の排出管30は、管状の部材であり、その基端部の外周面に本体10の排出部16の排出孔16aと螺合可能なネジ溝を有する。排出管30の軸心方向中途部の外面は、側方に突出する六角状に形成される。
排出管30は、本体10の排出部16の排出孔16aに螺合することによって、排出部16に装着される。排出管30は、本体10の底部11から先端側に突出するように配置される。排出管30は、排出部16に装着された状態で、排出部16(排出孔16a)と連通する。
排出管30の中途部と本体10の底部11の先端側の面との間には、ガスケット31が設けられる。
The discharge pipe 30 of the inspection jig 1 is a tubular member, and has a thread groove that can be screwed into the discharge hole 16a of the discharge part 16 of the main body 10 on the outer peripheral surface of the base end part. The outer surface of the middle part in the axial center direction of the discharge pipe 30 is formed in a hexagonal shape protruding sideways.
The discharge pipe 30 is attached to the discharge unit 16 by being screwed into the discharge hole 16 a of the discharge unit 16 of the main body 10. The discharge pipe 30 is disposed so as to protrude from the bottom 11 of the main body 10 to the front end side. The discharge pipe 30 communicates with the discharge unit 16 (discharge hole 16a) while being attached to the discharge unit 16.
A gasket 31 is provided between the midway part of the discharge pipe 30 and the surface on the front end side of the bottom part 11 of the main body 10.

このように構成される点検治具1では、本体10の側部12の内面を検知部51のキャップカバー55のリブ55bの外周に圧接させることで、点検治具1と検知部51との気密を確保する。
このとき、点検治具1の本体10の溝部14と検知部51のキャップ部材54のバー54bとを嵌合させるようにして、点検治具1を検知部51に装着することで、点検治具1を検知部51に装着するときの位置決めを容易に行うことができる。
また、点検治具1の本体10が溝部14を有することによって、検知部51のキャップ部材54がバー54bを有し且つ点検治具1の本体10が凸部13を有する構成であっても、点検治具1を軸心方向に長く構成することを抑制し、点検治具1をコンパクトに構成することができる。
In the inspection jig 1 configured as described above, the inner surface of the side portion 12 of the main body 10 is brought into pressure contact with the outer periphery of the rib 55 b of the cap cover 55 of the detection unit 51, whereby the inspection jig 1 and the detection unit 51 are hermetically sealed. Secure.
At this time, the inspection jig 1 is attached to the detection unit 51 so that the groove portion 14 of the main body 10 of the inspection jig 1 and the bar 54b of the cap member 54 of the detection unit 51 are fitted together. Positioning when attaching 1 to the detection unit 51 can be easily performed.
Moreover, even if the main body 10 of the inspection jig 1 has the groove portion 14, the cap member 54 of the detection unit 51 has the bar 54 b and the main body 10 of the inspection jig 1 has the convex portion 13. It is possible to suppress the inspection jig 1 from being configured to be long in the axial direction and to configure the inspection jig 1 in a compact manner.

点検治具1では、検知部51のガスセンサ53を点検する場合、チューブ40の一端部を供給管20に接続する。チューブ40の他端部は、被検知ガスが収納されるガスバック(不図示)に接続される。
そして、ポンプ(不図示)によって圧送されることによって、ガスバックに収納される被検知ガスは、チューブ40および供給管20を介して、本体10の供給部15の基端側(ガスセンサ53側)の開口から本体10の内側に供給され、検知部51のガスセンサ53に供給される。
さらに、検知部51のガスセンサ53に供給された被検知ガスは、本体10の排出部16の基端側(ガスセンサ53側)の開口から排出部16内を流通し、排出管30を介して点検治具1外に排出される。
なお、点検治具1では、チューブ(不図示)の一端部を排出管30に接続し、当該チューブの一端部をガスバックに接続し、当該チューブおよびチューブ40を介してガスバックと点検治具1(検知部51)との間を被検知ガスが循環する構成とすることもできる。
In the inspection jig 1, when inspecting the gas sensor 53 of the detection unit 51, one end of the tube 40 is connected to the supply pipe 20. The other end of the tube 40 is connected to a gas bag (not shown) in which the gas to be detected is stored.
The detected gas stored in the gas bag by being pumped by a pump (not shown) passes through the tube 40 and the supply pipe 20 to the base end side (gas sensor 53 side) of the supply unit 15 of the main body 10. Is supplied to the inside of the main body 10 from the opening and supplied to the gas sensor 53 of the detection unit 51.
Further, the gas to be detected supplied to the gas sensor 53 of the detection unit 51 circulates in the discharge unit 16 through an opening on the base end side (gas sensor 53 side) of the discharge unit 16 of the main body 10 and is inspected via the discharge pipe 30. It is discharged out of the jig 1.
In the inspection jig 1, one end of a tube (not shown) is connected to the discharge pipe 30, one end of the tube is connected to a gas bag, and the gas bag and the inspection jig are connected via the tube and the tube 40. 1 (detector 51) can be configured to circulate the gas to be detected.

点検治具1では、本体10の供給部15と排出部16とは、底部11にそれぞれ配置される。供給部15と排出部16とは、並置される。供給部15と排出部16とは、本体10の中心を通る(本体10の軸心と交差する)同一直線上にそれぞれ配置される。供給部15と排出部16とは、本体10の軸心に対して略対称な位置に配置される。供給部15と排出部16とは、本体10の軸心方向(または凸部13の突出方向)に沿って形成され、互いが平行するように形成される。
供給部15と排出部16とは、本体10の軸心方向に沿って被検知ガスが流通するように構成される。供給部15と排出部16とは、先端側から基端側、または、基端側から先端側に被検知ガスが流通するように構成される。供給部15と排出部16とは、流通方向が略180度異なる向きに被検知ガスが流通するように構成される。
供給部15の先端側の開口(上流側の開口)と排出部16先端側の開口(下流側の開口)とは、底部11の先端側の面にそれぞれ形成されて並置される。供給部15の先端側の開口と排出部16先端側の開口とは、同一方向(先端側)に向かって開口する。
供給部15の基端側の開口(下流側の開口)と排出部16基端側の開口(上流側の開口)とは、底部11の基端側(凸部13)にそれぞれ形成されて並置される。供給部15の基端側の開口と排出部16基端側の開口とは、同一方向(基端側)に向かって開口する。
供給管20と排出管30とは、それぞれ本体10の底部11(底部11の先端側の面)に配置される。供給管20と排出管30とは、並置される。
In the inspection jig 1, the supply unit 15 and the discharge unit 16 of the main body 10 are respectively disposed on the bottom 11. The supply unit 15 and the discharge unit 16 are juxtaposed. The supply unit 15 and the discharge unit 16 are arranged on the same straight line that passes through the center of the main body 10 (intersects the axis of the main body 10). The supply unit 15 and the discharge unit 16 are disposed at substantially symmetrical positions with respect to the axis of the main body 10. The supply unit 15 and the discharge unit 16 are formed along the axial direction of the main body 10 (or the protruding direction of the convex portion 13), and are formed so as to be parallel to each other.
The supply unit 15 and the discharge unit 16 are configured such that the gas to be detected flows along the axial direction of the main body 10. The supply unit 15 and the discharge unit 16 are configured such that the gas to be detected flows from the distal end side to the proximal end side or from the proximal end side to the distal end side. The supply unit 15 and the discharge unit 16 are configured so that the gas to be detected flows in directions in which the distribution directions are different by approximately 180 degrees.
An opening on the front end side of the supply unit 15 (upstream side opening) and an opening on the front end side of the discharge unit 16 (opening on the downstream side) are respectively formed and juxtaposed on the front end side surface of the bottom part 11. The opening on the front end side of the supply unit 15 and the opening on the front end side of the discharge unit 16 open in the same direction (front end side).
The base end side opening (downstream side opening) of the supply part 15 and the discharge part 16 base end side opening (upstream side opening) are formed on the base end side (convex part 13) of the bottom part 11 and juxtaposed. Is done. The opening on the base end side of the supply unit 15 and the opening on the base end side of the discharge unit 16 open in the same direction (base end side).
The supply pipe 20 and the discharge pipe 30 are respectively disposed on the bottom 11 of the main body 10 (the surface on the front end side of the bottom 11). The supply pipe 20 and the discharge pipe 30 are juxtaposed.

以上のように、本体10の供給部15と排出部16とが並置される点検治具1では、供給部15と排出部16とが比較的まとまって配置されることとなり、検知部51のガスセンサ53の点検作業を行うときの取扱いが煩雑に感じることを軽減することができる。
したがって、点検治具1によれば、点検治具1の取扱いが容易となる。
また、点検治具1では、本体10の供給部15と排出部16とが並置されて比較的まとまって配置されることから、供給管20と排出管30とは、それぞれ本体10(供給部15および排出部16)に装着された際に、比較的まとまって配置されることとなる。
したがって、点検治具1によれば、本体10の供給部15と排出部16とのうち一方または両方が本体10の側部12に設けられて、供給管20と排出管30とがまとまって配置されないものと比べて、コンパクトな構成を実現することができる。
As described above, in the inspection jig 1 in which the supply unit 15 and the discharge unit 16 of the main body 10 are juxtaposed, the supply unit 15 and the discharge unit 16 are arranged relatively together, and the gas sensor of the detection unit 51 is arranged. It is possible to reduce the feeling of handling when performing the inspection work 53.
Therefore, according to the inspection jig 1, the inspection jig 1 can be easily handled.
Further, in the inspection jig 1, since the supply unit 15 and the discharge unit 16 of the main body 10 are arranged side by side and arranged relatively together, the supply pipe 20 and the discharge pipe 30 are respectively connected to the main body 10 (the supply unit 15). And when it is mounted on the discharge part 16), it will be arranged relatively together.
Therefore, according to the inspection jig 1, one or both of the supply part 15 and the discharge part 16 of the main body 10 are provided on the side part 12 of the main body 10, and the supply pipe 20 and the discharge pipe 30 are arranged together. Compared to those that are not, a compact configuration can be realized.

点検治具1では、本体10の供給部15と排出部16とは、本体10における検知部51のガスセンサ53に対向する部分(底部11)にそれぞれ配置される。供給部15(供給部15の下流側の開口)と排出部16(排出部16の上流側の開口)とは、検知部51のガスセンサ53の検知面53aに対向してそれぞれ配置される。供給部15(供給部15の下流側の開口)と排出部16(排出部16の上流側の開口)とは、先端側からみて、検知部51のガスセンサ53の検知面53aと重なるように配置される。
供給管20と排出管30とは、本体10における検知部51のガスセンサ53に対向する部分(底部11)にそれぞれ配置される。供給管20(供給管20の下流側の開口)と排出管30(排出管30の上流側の開口)とは、先端側からみて、検知部51のガスセンサ53の検知面53aと重なるように配置される。
In the inspection jig 1, the supply unit 15 and the discharge unit 16 of the main body 10 are respectively disposed in a portion (bottom portion 11) of the main body 10 that faces the gas sensor 53 of the detection unit 51. The supply unit 15 (opening on the downstream side of the supply unit 15) and the discharge unit 16 (opening on the upstream side of the discharge unit 16) are arranged to face the detection surface 53a of the gas sensor 53 of the detection unit 51, respectively. The supply unit 15 (opening on the downstream side of the supply unit 15) and the discharge unit 16 (opening on the upstream side of the discharge unit 16) are arranged so as to overlap the detection surface 53a of the gas sensor 53 of the detection unit 51 as viewed from the front end side. Is done.
The supply pipe 20 and the discharge pipe 30 are respectively arranged in a part (bottom part 11) of the main body 10 facing the gas sensor 53 of the detection unit 51. The supply pipe 20 (opening on the downstream side of the supply pipe 20) and the discharge pipe 30 (opening on the upstream side of the discharge pipe 30) are arranged so as to overlap the detection surface 53a of the gas sensor 53 of the detection unit 51 when viewed from the front end side. Is done.

ここで、本体10の供給部15と排出部16とが検知部51のガスセンサ53の検知面53aに対向して配置されない点検治具1(例えば、本体10の側部12に排出部15が配置されるもの)では、点検治具1内に供給された被検知ガスは、供給部15から排出部15に直接流通し易くなり、検知部51のガスセンサ53を介さずにそのまま排出部15から排出され易くなる。
本構成のように、本体10の供給部15と排出部16とが検知部51のガスセンサ53の検知面53aに対向して配置される、点検治具1では、点検治具1内に供給された被検知ガスは、供給部15(先端側)から検知部51のガスセンサ53(基端側)に向かって吹きかけられてガスセンサ53に流通し易くなるとともに、当該検知部51のガスセンサ53(基端側)から排出部16(先端側)に流通し易くなる。つまり、点検治具1では、点検治具1内に供給された被検知ガスが、検知部51のガスセンサ53側に流通して排出部16から排出され易くなる。
したがって、点検治具1によれば、点検治具1内に流入した被検知ガスが、検知部51のガスセンサ53側に流通せずに(ガスセンサ53側において検知されずに)点検治具1外に流出することを抑制して、検知部51のガスセンサ53を点検するときに、ガスセンサ53に被検知ガスを確実に接触させることができる。
Here, the inspection jig 1 in which the supply unit 15 and the discharge unit 16 of the main body 10 are not arranged to face the detection surface 53a of the gas sensor 53 of the detection unit 51 (for example, the discharge unit 15 is arranged on the side portion 12 of the main body 10). The detected gas supplied into the inspection jig 1 easily flows directly from the supply unit 15 to the discharge unit 15 and is directly discharged from the discharge unit 15 without passing through the gas sensor 53 of the detection unit 51. It becomes easy to be done.
As in this configuration, in the inspection jig 1 in which the supply unit 15 and the discharge unit 16 of the main body 10 are arranged to face the detection surface 53a of the gas sensor 53 of the detection unit 51, the supply unit 15 is supplied into the inspection jig 1. The detected gas is sprayed from the supply unit 15 (front end side) toward the gas sensor 53 (base end side) of the detection unit 51 and easily flows to the gas sensor 53, and the gas sensor 53 (base end) of the detection unit 51 From the side) to the discharge part 16 (tip side). That is, in the inspection jig 1, the detected gas supplied into the inspection jig 1 is easily circulated to the gas sensor 53 side of the detection unit 51 and is easily discharged from the discharge unit 16.
Therefore, according to the inspection jig 1, the detected gas that has flowed into the inspection jig 1 does not circulate to the gas sensor 53 side of the detection unit 51 (without being detected on the gas sensor 53 side). The gas to be detected can be reliably brought into contact with the gas sensor 53 when the gas sensor 53 of the detection unit 51 is inspected.

点検治具1の本体10の供給部15は、検知部51のガスセンサ53の検知面53aの中央部よりも外側(検知面53aの縁部)に被検知ガスを流通させる。供給部15は、検知部51のガスセンサ53の検知口53bからずれるようにして、検知部51のガスセンサ53の検知面53a側に被検知ガスを流通させる。
図1または図2に示すように、本体10の供給部15は、先端側からみて、その下流側の開口(供給溝15bの基端側の開口)が、ガスセンサ53の検知面53aの中央部よりも外側において、検知面53aと重なるように配置される。本体10の供給部15は、先端側からみて、その下流側の開口が、ガスセンサ53の検知面53aの縁部と重なるように配置される。本体10の供給部15は、先端側からみて、その下流側の開口(供給溝15bの基端側の開口)が、ガスセンサ53の検知口53bと重ならないように配置される。
The supply unit 15 of the main body 10 of the inspection jig 1 causes the gas to be detected to flow outside the edge of the detection surface 53a of the gas sensor 53 of the detection unit 51 (the edge of the detection surface 53a). The supply unit 15 causes the gas to be detected to flow to the detection surface 53 a side of the gas sensor 53 of the detection unit 51 so as to be displaced from the detection port 53 b of the gas sensor 53 of the detection unit 51.
As shown in FIG. 1 or FIG. 2, the supply unit 15 of the main body 10 has an opening on the downstream side (opening on the base end side of the supply groove 15 b) as viewed from the distal end side, and a central portion of the detection surface 53 a of the gas sensor 53. It is arranged on the outer side so as to overlap the detection surface 53a. The supply unit 15 of the main body 10 is disposed so that the opening on the downstream side thereof overlaps with the edge of the detection surface 53 a of the gas sensor 53 when viewed from the front end side. The supply unit 15 of the main body 10 is arranged so that the opening on the downstream side (the opening on the base end side of the supply groove 15 b) does not overlap the detection port 53 b of the gas sensor 53 when viewed from the distal end side.

以上のように、本体10の供給部15が、検知部51のガスセンサ53の検知口53bからずれるようにして、検知部51のガスセンサ53の検知面53a側に被検知ガスを流通させる、点検治具1では、検知部51のガスセンサ53の検知口53bからずれるようにして、ガスセンサ53の検知面53a側に被検知ガスを流通させるため、被検知ガスの流勢を低減させることができる。
したがって、検知器50によれば、点検治具1内に供給されてガスセンサ53側に流通する被検知ガスによる圧力依存を検知部51のガスセンサ53が受けることを抑制することができる。
As described above, the inspection treatment in which the supply unit 15 of the main body 10 circulates the detection target gas to the detection surface 53a side of the gas sensor 53 of the detection unit 51 so as to be displaced from the detection port 53b of the gas sensor 53 of the detection unit 51. In the tool 1, since the gas to be detected is circulated to the detection surface 53a side of the gas sensor 53 so as to be displaced from the detection port 53b of the gas sensor 53 of the detection unit 51, the flow of the gas to be detected can be reduced.
Therefore, according to the detector 50, it is possible to suppress the gas sensor 53 of the detection unit 51 from receiving pressure dependency due to the gas to be detected that is supplied into the inspection jig 1 and circulates on the gas sensor 53 side.

また以上のように、本体10の供給部15の供給溝15bが凸部13の側面を切欠くように形成される、点検治具1では、供給溝15bを流通する被検知ガスは、供給溝15bによって案内されるようにして検知器50のガスセンサ53に流通する。
したがって、点検治具1によれば、被検知ガスによる圧力依存を検知部51のガスセンサ53が受けることを抑制するにあたって、本体10の供給部15が検知部51のガスセンサ53の検知面53aの中央部よりも外側に被検知ガスを流通させる構成であっても、ガスセンサ53側に確実に流通させることができる。
Further, as described above, in the inspection jig 1 in which the supply groove 15b of the supply unit 15 of the main body 10 is formed so as to cut out the side surface of the convex portion 13, the detected gas flowing through the supply groove 15b It is distributed to the gas sensor 53 of the detector 50 as guided by 15b.
Therefore, according to the inspection jig 1, when the gas sensor 53 of the detection unit 51 is prevented from receiving pressure dependency due to the gas to be detected, the supply unit 15 of the main body 10 is centered on the detection surface 53 a of the gas sensor 53 of the detection unit 51. Even if it is the structure which distribute | circulates to-be-detected gas outside a part, it can be reliably distribute | circulated to the gas sensor 53 side.

また以上のように、本体10の供給部15が本体10の軸心よりも外側(本体10の側部12側)に配置され、凸部13が本体10の底部11の中央部に配置される、点検治具1では、被検知ガスが供給溝15bを流通するときに供給溝15bと接触することによって、被検知ガスの流勢を低減させることができる。
したがって、点検治具1によれば、点検治具1内に供給されてガスセンサ53側に流通する被検知ガスによる圧力依存を検知部51のガスセンサ53が受けることを、より確実に抑制することができる。
In addition, as described above, the supply unit 15 of the main body 10 is disposed outside the axis of the main body 10 (on the side 12 side of the main body 10), and the convex portion 13 is disposed at the center of the bottom 11 of the main body 10. In the inspection jig 1, when the gas to be detected flows through the supply groove 15b, the flow of the gas to be detected can be reduced by coming into contact with the supply groove 15b.
Therefore, according to the inspection jig 1, it is possible to more reliably suppress the gas sensor 53 of the detection unit 51 from receiving the pressure dependence due to the gas to be detected that is supplied into the inspection jig 1 and circulates on the gas sensor 53 side. it can.

点検治具1の本体10の供給部15(下流側の開口)と排出部16(上流側の開口)とは、凸部13(キャップ部材54のバー54b)を挟むような位置にそれぞれ配置される。供給部15と排出部16とは、凸部13に対して略対称な位置にそれぞれ配置される。供給部15と排出部16とは、凸部13の外周方向(円周方向)において略180度位相をずらすようにそれぞれ配置される。供給部15と排出部16とは、凸部13に近接してそれぞれ配置される。   The supply part 15 (downstream opening) and the discharge part 16 (upstream opening) of the main body 10 of the inspection jig 1 are respectively arranged at positions sandwiching the convex part 13 (bar 54b of the cap member 54). The The supply unit 15 and the discharge unit 16 are respectively disposed at positions that are substantially symmetrical with respect to the convex portion 13. The supply unit 15 and the discharge unit 16 are arranged so as to be shifted in phase by approximately 180 degrees in the outer peripheral direction (circumferential direction) of the convex portion 13. The supply unit 15 and the discharge unit 16 are arranged close to the convex portion 13.

以上のように、本体10の供給部15と排出部16とが凸部13を挟むような位置に配置される、点検治具1では、点検治具1内に供給された被検知ガスは、排出部16側に流通するためには凸部13(キャップ部材54のバー54b)を迂回するように流通することを要するため、供給部15から検知部51のガスセンサ53に向かって吹きかけられてガスセンサ53に流通して、当該ガスセンサ53(基端側)から排出部16(先端側)に流通することとなる。
したがって、点検治具1によれば、点検治具1内に流入した被検知ガスが、検知部51のガスセンサ53側に流通せずに点検治具1外に流出することをより確実に抑制して、検知部51のガスセンサ53を点検するときに、ガスセンサ53に被検知ガスをより確実に接触させることができる。
As described above, in the inspection jig 1 in which the supply unit 15 and the discharge unit 16 of the main body 10 are disposed so as to sandwich the convex portion 13, the detected gas supplied into the inspection jig 1 is In order to circulate to the discharge part 16 side, it is necessary to circulate around the convex part 13 (the bar 54b of the cap member 54), so the gas sensor is sprayed from the supply part 15 toward the gas sensor 53 of the detection part 51. The gas sensor 53 (base end side) is distributed to the discharge unit 16 (tip end side).
Therefore, according to the inspection jig 1, the detected gas that has flowed into the inspection jig 1 is more reliably suppressed from flowing out of the inspection jig 1 without flowing to the gas sensor 53 side of the detection unit 51. Thus, when the gas sensor 53 of the detection unit 51 is inspected, the gas to be detected can be brought into contact with the gas sensor 53 more reliably.

図1に示すように、点検治具1の本体10の凸部13は、側部12の基端側の端部の近傍まで突出する。凸部13は、点検治具1が検知部51に装着されたときに、凸部13の基端側の端部(凸部13の突出側端部)が検知部51の防水フィルタ59に当接し、また、凸部13の基端側の端部が検知部51のガスセンサ53の検知面53aに近接するように構成される。
本体10の供給部15の供給溝15bは、凸部13の基端側の端部から凸部13の側面を切欠くように形成される。本体10の供給部15の下流側の開口(供給溝15bの基端側の開口)が、ガスセンサ53の検知面53aに近接して配置される。
As shown in FIG. 1, the convex portion 13 of the main body 10 of the inspection jig 1 protrudes to the vicinity of the end portion on the proximal end side of the side portion 12. When the inspection jig 1 is mounted on the detection unit 51, the convex portion 13 has an end on the proximal end side of the convex portion 13 (a protruding side end portion of the convex portion 13) that contacts the waterproof filter 59 of the detection unit 51. Moreover, it is comprised so that the edge part of the base end side of the convex part 13 may adjoin to the detection surface 53a of the gas sensor 53 of the detection part 51. FIG.
The supply groove 15 b of the supply unit 15 of the main body 10 is formed so as to cut out the side surface of the projection 13 from the proximal end of the projection 13. An opening on the downstream side of the supply unit 15 of the main body 10 (an opening on the base end side of the supply groove 15 b) is disposed close to the detection surface 53 a of the gas sensor 53.

以上のように、本体10の供給部15の下流側の開口(供給溝15bの基端側の開口)がガスセンサ53の検知面53aに近接して配置される、点検治具1では、供給部15から点検治具1内に供給された被検知ガスが不所望な方向(ガスセンサ53側に流通しない方向)に拡散することを極力防ぐことができ、検知部51のガスセンサ53に被検知ガスを確実に流通させることができる。   As described above, in the inspection jig 1 in which the opening on the downstream side of the supply unit 15 of the main body 10 (the opening on the base end side of the supply groove 15b) is disposed close to the detection surface 53a of the gas sensor 53, the supply unit 15, it is possible to prevent the detected gas supplied into the inspection jig 1 from diffusing in an undesired direction (a direction not flowing to the gas sensor 53 side) as much as possible, and to detect the detected gas in the gas sensor 53 of the detection unit 51. It can be distributed reliably.

図1または図2に示すように、本体10の供給部15の供給溝15bは、その凸部13の外面を切欠いている部分の幅が供給溝15bの幅よりも小さく構成される。
供給部15は、ガスセンサ53側における被検知ガスが流通する流路の幅を小さく構成される。
As shown in FIG. 1 or FIG. 2, the supply groove 15 b of the supply unit 15 of the main body 10 is configured such that the width of the portion where the outer surface of the convex portion 13 is not cut is smaller than the width of the supply groove 15 b.
The supply unit 15 is configured to reduce the width of the flow path through which the gas to be detected flows on the gas sensor 53 side.

以上のように、本体10の供給部15は、ガスセンサ53側(供給溝15b)における被検知ガスが流通する流路の幅を小さく構成される、点検治具1では、ガスセンサ53側(供給溝15b)における被検知ガスが流通する流路の幅を小さくすることによって被検知ガスが供給溝15bを流通するときに、被検知ガスの流勢を低減させることができる。
したがって、点検治具1によれば、点検治具1内に供給されてガスセンサ53側に流通する被検知ガスによる圧力依存を検知部51のガスセンサ53が受けることを、より確実に抑制することができる。
As described above, the supply unit 15 of the main body 10 is configured so that the width of the flow path through which the gas to be detected flows on the gas sensor 53 side (supply groove 15b) is small. By reducing the width of the flow path through which the gas to be detected flows in 15b), the flow of the gas to be detected can be reduced when the gas to be detected flows through the supply groove 15b.
Therefore, according to the inspection jig 1, it is possible to more reliably suppress the gas sensor 53 of the detection unit 51 from receiving the pressure dependence due to the gas to be detected that is supplied into the inspection jig 1 and circulates on the gas sensor 53 side. it can.

点検治具1の本体10の排出部16の上流側の開口(基端側の開口)は、凸部13の基端側(ガスセンサ53側)の端部に開口する。排出部16の上流側の開口は、ガスセンサ53の検知面53aに近接して配置される。排出部16の上流側の開口は、先端側からみて、検知部51のガスセンサ53の検知面53aの中央よりも外側(ガスセンサ53の検知面53aの縁部側)に配置される。   The upstream opening (base end opening) of the discharge portion 16 of the main body 10 of the inspection jig 1 opens at the base end side (gas sensor 53 side) end of the convex portion 13. The opening on the upstream side of the discharge unit 16 is disposed close to the detection surface 53 a of the gas sensor 53. The opening on the upstream side of the discharge unit 16 is disposed on the outer side (the edge side of the detection surface 53a of the gas sensor 53) than the center of the detection surface 53a of the gas sensor 53 of the detection unit 51 when viewed from the front end side.

以上のように、本体10の排出部16の下流側の開口がガスセンサ53の検知面53aに近接して配置される、点検治具1では、ガスセンサ53に供給された被検知ガスを、排出部16から容易に排出することができる。
したがって、点検治具1によれば、点検治具1に流入し、ガスセンサ53に接触し、点検治具1から流出する、被検知ガスの流通性を向上させることができる。
As described above, in the inspection jig 1 in which the opening on the downstream side of the discharge unit 16 of the main body 10 is disposed close to the detection surface 53a of the gas sensor 53, the detected gas supplied to the gas sensor 53 is discharged to the discharge unit. 16 can be easily discharged.
Therefore, according to the inspection jig 1, it is possible to improve the flowability of the gas to be detected that flows into the inspection jig 1, contacts the gas sensor 53, and flows out of the inspection jig 1.

点検治具1の本体10の排出部16の上流側の開口は、供給部15の下流側の開口とできるだけ離れた位置に配置されることが好ましい。排出部16の上流側の開口は、供給部15の下流側の開口との距離ができるだけ長くなるように配置されることが好ましい。
本実施形態では、排出部16の上流側の開口が供給部15の下流側の開口とできるだけ離れた位置(離間した位置)に配置されるにあたって、供給部15と排出部16とは、本体10の軸心に対して略点対称な位置に形成されている。
The opening on the upstream side of the discharge portion 16 of the main body 10 of the inspection jig 1 is preferably arranged at a position as far as possible from the opening on the downstream side of the supply portion 15. The upstream opening of the discharge unit 16 is preferably arranged so that the distance from the downstream opening of the supply unit 15 is as long as possible.
In the present embodiment, when the opening on the upstream side of the discharge unit 16 is arranged at a position (a position separated) as far as possible from the opening on the downstream side of the supply unit 15, the supply unit 15 and the discharge unit 16 are separated from each other. It is formed at a position that is substantially point-symmetric with respect to the axial center.

以上のように、本体10の排出部16の上流側の開口が供給部15の下流側の開口と離間した位置に配置されることによって、供給部15から点検治具1内に流入した被検知ガスが、検知部51のガスセンサ53全体を通過してから本体10の排出部16側に流通し易くなる。
このため、点検治具1では、点検治具1内に流入した被検知ガスが、検知部51のガスセンサ53の一部のみを通過して、排出部16側に流通することを防止することができる。
したがって、点検治具1によれば、検知部51のガスセンサ53による被検知ガスの検出を確実に行うことができる。
As described above, since the opening on the upstream side of the discharge portion 16 of the main body 10 is arranged at a position separated from the opening on the downstream side of the supply portion 15, the detected object flowing into the inspection jig 1 from the supply portion 15. It becomes easier for the gas to flow to the discharge unit 16 side of the main body 10 after passing through the entire gas sensor 53 of the detection unit 51.
For this reason, in the inspection jig 1, it is possible to prevent the detected gas flowing into the inspection jig 1 from passing through only a part of the gas sensor 53 of the detection unit 51 and flowing to the discharge unit 16 side. it can.
Therefore, according to the inspection jig 1, the gas to be detected can be reliably detected by the gas sensor 53 of the detection unit 51.

また以上のように、本体10の供給部15と排出部16とが検知部51のガスセンサ53の検知面53aに対向してそれぞれ配置されるとともに、供給部15の下流側の開口(供給溝15bの基端側の開口)がガスセンサ53の検知面53aに近接して配置される、点検治具1では、検知部51のガスセンサ53に被検知ガスをより確実に流通させることができる。
したがって、点検治具1によれば、点検治具1内に流入した被検知ガスが、検知部51のガスセンサ53側に流通せずに点検治具1外に流出することをより確実に抑制して、検知部51のガスセンサ53を点検するときに、ガスセンサ53に被検知ガスをより確実に接触させることができる。
In addition, as described above, the supply unit 15 and the discharge unit 16 of the main body 10 are arranged to face the detection surface 53a of the gas sensor 53 of the detection unit 51, respectively, and the downstream opening (supply groove 15b) of the supply unit 15 is provided. In the inspection jig 1 in which the opening on the base end side of the gas sensor 53 is disposed close to the detection surface 53a of the gas sensor 53, the gas to be detected can be more reliably distributed to the gas sensor 53 of the detection unit 51.
Therefore, according to the inspection jig 1, the detected gas that has flowed into the inspection jig 1 is more reliably suppressed from flowing out of the inspection jig 1 without flowing to the gas sensor 53 side of the detection unit 51. Thus, when the gas sensor 53 of the detection unit 51 is inspected, the gas to be detected can be brought into contact with the gas sensor 53 more reliably.

また以上のように、本体10の供給部15と排出部16とが検知部51のガスセンサ53の検知面53aに対向してそれぞれ配置されるとともに凸部13を挟むような位置に配置され、供給部15の下流側の開口(供給溝15bの基端側の開口)がガスセンサ53の検知面53aに近接して配置される、点検治具1では、ガスセンサ53に被検知ガスをより確実に流通させることができる。
したがって、点検治具1によれば、点検治具1内に流入した被検知ガスが、検知部51のガスセンサ53側に流通せずに点検治具1外に流出することをより確実に抑制して、検知部51のガスセンサ53を点検するときに、ガスセンサ53に被検知ガスをより確実に接触させることができる。
Further, as described above, the supply unit 15 and the discharge unit 16 of the main body 10 are respectively disposed so as to face the detection surface 53a of the gas sensor 53 of the detection unit 51 and are disposed at positions where the convex portion 13 is sandwiched. In the inspection jig 1 in which the opening on the downstream side of the portion 15 (the opening on the base end side of the supply groove 15 b) is disposed close to the detection surface 53 a of the gas sensor 53, the gas to be detected flows more reliably to the gas sensor 53. Can be made.
Therefore, according to the inspection jig 1, the detected gas that has flowed into the inspection jig 1 is more reliably suppressed from flowing out of the inspection jig 1 without flowing to the gas sensor 53 side of the detection unit 51. Thus, when the gas sensor 53 of the detection unit 51 is inspected, the gas to be detected can be brought into contact with the gas sensor 53 more reliably.

点検治具1の本体10は、樹脂素材で成形され、透明または半透明に構成される。   The main body 10 of the inspection jig 1 is formed of a resin material and is configured to be transparent or translucent.

以上のように、本体10が透明または半透明に構成される点検治具1によれば、点検治具1を検知部51に装着したときに、点検治具1と検知部51(キャップカバー55のリブ55b)との気密が確保されているか否かの状態を容易に確認することができる。   As described above, according to the inspection jig 1 in which the main body 10 is configured to be transparent or translucent, when the inspection jig 1 is mounted on the detection unit 51, the inspection jig 1 and the detection unit 51 (the cap cover 55). It is possible to easily confirm whether or not airtightness with the rib 55b) is ensured.

図10に示すように、点検治具1の本体10の供給部15は、供給溝15bを有さない構成とすることもできる。
このとき、供給部15は、供給孔15cで構成される。
As shown in FIG. 10, the supply part 15 of the main body 10 of the inspection jig 1 may be configured not to have the supply groove 15b.
At this time, the supply part 15 is comprised by the supply hole 15c.

点検治具1の本体10の供給部15の供給孔15cは、円柱状の孔であり、底部11の先端側の面から凸部13の基端側の面に貫通する。供給孔15cは、その先端側部分に供給管20を着脱可能に構成される。供給孔15cは、その先端側部分の内周面に供給管20の基端部と螺合可能なネジ溝を有する。供給孔15cの基端側部分は、先端側部分よりも小径に構成される。供給孔15cの基端側部分は、その幅が供給孔15cの先端側部分の幅よりも小さく構成される。   The supply hole 15 c of the supply part 15 of the main body 10 of the inspection jig 1 is a cylindrical hole, and penetrates from the surface on the distal end side of the bottom part 11 to the surface on the proximal end side of the convex part 13. The supply hole 15c is configured such that the supply pipe 20 can be attached to and detached from the tip side portion. The supply hole 15c has a thread groove that can be screwed to the proximal end portion of the supply pipe 20 on the inner peripheral surface of the distal end side portion thereof. The proximal end portion of the supply hole 15c is configured to have a smaller diameter than the distal end portion. The width of the proximal end portion of the supply hole 15c is smaller than the width of the distal end portion of the supply hole 15c.

図11に示すように、本体10の供給部15は、基端側(ガスセンサ53側)に行くに従って縮径されるテーパ状に形成される供給孔15dで構成することもできる。   As shown in FIG. 11, the supply part 15 of the main body 10 can also be configured by a supply hole 15d formed in a tapered shape that is reduced in diameter as it goes to the base end side (gas sensor 53 side).

図12に示すように、検知器50では、キャップ部材54がバー54bを有さない構成とすることもできる。このとき、点検治具1では、本体10が凸部13に溝部14を有さない構成とする。   As shown in FIG. 12, in the detector 50, the cap member 54 may not have the bar 54b. At this time, the inspection jig 1 is configured such that the main body 10 does not have the groove portion 14 in the convex portion 13.

図2または図13に示すように、検知器50では、検知部51のガスセンサ53の検知面53aに、複数個の検知口53bが形成される。ガスセンサ53の検知面53aの検知口53bは、小径の孔で構成される。
本体10の供給部15は、先端側からみて、その下流側の開口が、ガスセンサ53の複数個の検知口53bと重ならないように配置される。本体10の排出部16は、先端側からみて、その上流側の開口が、検知部51のガスセンサ53の複数個の検知口53bのうち一部のものと重なるように配置される。
検知部51のガスセンサ53の検知口53bは、点検治具1内に供給されてガスセンサ53側に流通する被検知ガスが検知面53aに接触するように流通した後に複数個の検知口53bに流通するように構成される。本体10の供給部15は、検知部51のガスセンサ53の検知口53bからずれるようにして、検知部51のガスセンサ53の検知面53a側に被検知ガスを流通させる。
As shown in FIG. 2 or FIG. 13, in the detector 50, a plurality of detection ports 53 b are formed on the detection surface 53 a of the gas sensor 53 of the detection unit 51. The detection port 53b of the detection surface 53a of the gas sensor 53 is configured by a small diameter hole.
The supply unit 15 of the main body 10 is arranged so that the opening on the downstream side thereof does not overlap with the plurality of detection ports 53 b of the gas sensor 53 when viewed from the front end side. The discharge part 16 of the main body 10 is arranged so that the opening on the upstream side thereof overlaps with some of the plurality of detection ports 53b of the gas sensor 53 of the detection part 51 as viewed from the front end side.
The detection ports 53b of the gas sensor 53 of the detection unit 51 are distributed to the plurality of detection ports 53b after the gas to be detected supplied to the inspection jig 1 and distributed to the gas sensor 53 side circulates so as to contact the detection surface 53a. Configured to do. The supply unit 15 of the main body 10 causes the gas to be detected to flow to the detection surface 53 a side of the gas sensor 53 of the detection unit 51 so as to be displaced from the detection port 53 b of the gas sensor 53 of the detection unit 51.

以上のように、検知部51のガスセンサ53の検知面53aに複数個の検知口53bが形成される、検知器50では、被検知ガスがガスセンサ53の検知口53bを流通するときに、被検知ガスの流勢を低減させることができる。
したがって、検知器50によれば、点検治具1内に供給されてガスセンサ53側に流通する被検知ガスによる圧力依存を検知部51のガスセンサ53が受けることを、より確実に抑制することができる。
As described above, in the detector 50 in which a plurality of detection ports 53b are formed in the detection surface 53a of the gas sensor 53 of the detection unit 51, when the gas to be detected flows through the detection port 53b of the gas sensor 53, the detection target is detected. Gas flow can be reduced.
Therefore, according to the detector 50, it is possible to more reliably suppress the gas sensor 53 of the detection unit 51 from receiving pressure dependency due to the gas to be detected that is supplied into the inspection jig 1 and circulates on the gas sensor 53 side. .

図14に示すように、検知器50では、検知部51のガスセンサ53の検知面53aに、一個の検知口53bを形成することもできる。
本体10の供給部15は、先端側からみて、その下流側の開口が、ガスセンサ53の検知口53bと重ならないように配置される。本体10の排出部16は、先端側からみて、その上流側の開口が、検知部51のガスセンサ53の検知口53b(検知口53bのうち少なくとも一部)と重なるように配置される。
検知部51のガスセンサ53の検知口53bは、検知面53aの中央部に配置される。検知部51のガスセンサ53の検知口53bは、点検治具1内に供給されてガスセンサ53側に流通する被検知ガスが検知面53aに接触するように流通した後に検知口53bに流通するように構成される。本体10の供給部15は、検知部51のガスセンサ53の検知口53bからずれるようにして、検知部51のガスセンサ53の検知面53a側に被検知ガスを流通させる。
As shown in FIG. 14, in the detector 50, one detection port 53 b can be formed on the detection surface 53 a of the gas sensor 53 of the detection unit 51.
The supply unit 15 of the main body 10 is arranged so that the downstream opening thereof does not overlap with the detection port 53 b of the gas sensor 53 when viewed from the front end side. The discharge part 16 of the main body 10 is arranged so that the opening on the upstream side thereof overlaps with the detection port 53b (at least a part of the detection port 53b) of the gas sensor 53 of the detection unit 51 when viewed from the front end side.
The detection port 53b of the gas sensor 53 of the detection unit 51 is disposed at the center of the detection surface 53a. The detection port 53b of the gas sensor 53 of the detection unit 51 is supplied to the inspection jig 1 and flows to the detection port 53b after flowing to the detection surface 53a so that the gas to be detected flowing to the gas sensor 53 side flows. Composed. The supply unit 15 of the main body 10 causes the gas to be detected to flow to the detection surface 53 a side of the gas sensor 53 of the detection unit 51 so as to be displaced from the detection port 53 b of the gas sensor 53 of the detection unit 51.

以上のように、検知部51のガスセンサ53の検知口53bは、点検治具1内に供給されてガスセンサ53側に流通する被検知ガスが検知面53aに接触するように流通した後に検知口53bに流通するように構成される、検知器50では、被検知ガスが、ガスセンサ53の検知口53bを流通するときにガスセンサ53の検知面53aに接触するため、被検知ガスの流勢を低減させることができる。
したがって、検知器50によれば、点検治具1内に供給されてガスセンサ53側に流通する被検知ガスによる圧力依存を検知部51のガスセンサ53が受けることを、より確実に抑制することができる。
As described above, the detection port 53b of the gas sensor 53 of the detection unit 51 is detected after the gas to be detected that is supplied into the inspection jig 1 and flows to the gas sensor 53 side flows so as to contact the detection surface 53a. In the detector 50 that is configured to circulate, the gas to be detected contacts the detection surface 53a of the gas sensor 53 when flowing through the detection port 53b of the gas sensor 53, thereby reducing the flow of the gas to be detected. be able to.
Therefore, according to the detector 50, it is possible to more reliably suppress the gas sensor 53 of the detection unit 51 from receiving pressure dependency due to the gas to be detected that is supplied into the inspection jig 1 and circulates on the gas sensor 53 side. .

1 点検治具
10 本体
11 底部
12 側部
13 凸部
14 溝部
15 供給部
16 排出部
20 供給管
30 排出管
50 検知器
51 検知部
53 ガスセンサ
DESCRIPTION OF SYMBOLS 1 Inspection jig 10 Main body 11 Bottom part 12 Side part 13 Convex part 14 Groove part 15 Supply part 16 Discharge part 20 Supply pipe 30 Discharge pipe 50 Detector 51 Detection part 53 Gas sensor

Claims (5)

ガスセンサが備えられるガス検知器に装着可能であって、
被検知ガスを前記ガスセンサに供給する供給部と、
前記ガスセンサで検知した前記被検知ガスを排出する排出部と、を備え、
前記供給部と前記排出部とが並置され、
前記供給部と前記排出部とは、前記ガスセンサの検知面に対向してそれぞれ配置される、
点検治具。
It can be attached to a gas detector equipped with a gas sensor,
A supply unit for supplying a gas to be detected to the gas sensor;
A discharge section for discharging the detected gas detected by the gas sensor,
The supply unit and the discharge unit are juxtaposed,
The supply unit and the discharge unit are respectively arranged facing the detection surface of the gas sensor.
Inspection jig.
前記供給部の前記ガスセンサ側の開口が前記ガスセンサの検知口からずれるようにして配置される、
請求項1に記載の点検治具。
The opening on the gas sensor side of the supply unit is arranged so as to deviate from the detection port of the gas sensor.
The inspection jig according to claim 1.
前記供給部は、下流側の流路の幅が上流側に比べて小さく構成される、
請求項1または請求項2に記載の点検治具。
The supply unit is configured so that the width of the flow path on the downstream side is smaller than that on the upstream side.
The inspection jig according to claim 1 or claim 2.
前記供給部の前記ガスセンサ側の開口が前記ガスセンサの検知面に近接して配置される、
請求項1から請求項3のいずれか一項に記載の点検治具。
The gas sensor side opening of the supply unit is disposed close to the detection surface of the gas sensor,
The inspection jig according to any one of claims 1 to 3.
ガスセンサの検知面に対向するように突出する凸部を備え、
前記供給部の前記ガスセンサ側の開口と前記排出部の前記ガスセンサ側の開口とが、前記凸部における前記ガスセンサの検知面側にそれぞれ並置して形成される、
請求項1から請求項4のいずれか一項に記載の点検治具。
Providing a protruding part that protrudes to face the detection surface of the gas sensor,
An opening on the gas sensor side of the supply unit and an opening on the gas sensor side of the discharge unit are formed side by side on the detection surface side of the gas sensor in the convex portion, respectively.
The inspection jig according to any one of claims 1 to 4.
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