JPH074547Y2 - Tubular strength tester - Google Patents
Tubular strength testerInfo
- Publication number
- JPH074547Y2 JPH074547Y2 JP1987195134U JP19513487U JPH074547Y2 JP H074547 Y2 JPH074547 Y2 JP H074547Y2 JP 1987195134 U JP1987195134 U JP 1987195134U JP 19513487 U JP19513487 U JP 19513487U JP H074547 Y2 JPH074547 Y2 JP H074547Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure fluid
- diameter portion
- tubular body
- head
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、例えば酸素濃度センサー用セラミックチュー
ブのような管状体の強度を検査するために用いられる管
状体の強度検査装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a tubular body strength inspection device used for inspecting the strength of a tubular body such as a ceramic tube for an oxygen concentration sensor.
（従来の技術） 酸素濃度センサーには両端開口型あるいは一端封止型の
セラミックチューブが用いられており、組立前にその強
度を検査する必要がある。このために従来はセラミック
チューブを検査ヘッドに取付け、その内部に圧力水を導
入して内部からチューブ全体に均等な圧力を加える形式
の検査装置が用いられてきたが、このような従来の検査
装置により強度検査を行うと多孔質のセラミックチュー
ブが水に漏れるため、その後の乾燥に多くの時間とコス
トとを要する欠点があった。またこの種の検査装置にお
いては検査ヘッドとセラミックチューブとの間から圧力
水が漏れ易く、所定の圧力をセラミックチューブに印加
するには細心の注意を必要とする欠点もあった。(Prior Art) An oxygen concentration sensor uses a ceramic tube that is open at both ends or is sealed at one end, and its strength must be inspected before assembly. For this reason, conventionally, an inspection device of a type in which a ceramic tube is attached to an inspection head and pressure water is introduced into the inspection head to apply uniform pressure to the entire tube from the inside has been used. When the strength test is carried out, the porous ceramic tube leaks into water, so that there is a drawback that it takes much time and cost for subsequent drying. In addition, in this type of inspection apparatus, pressure water easily leaks from between the inspection head and the ceramic tube, and there is a drawback that careful attention is required to apply a predetermined pressure to the ceramic tube.
（考案が解決しようとする問題点） 本考案はこのような従来の問題点を解決して、多孔質の
セラミックチューブのような管状体を濡らすことなくそ
の内部に均等な圧力を加えて強度検査を行うことができ
るうえ、ヘッドの周囲から水漏れが生ずるおそれもない
管状体の強度検査装置を目的として完成されたものであ
る。(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems and applies a uniform pressure to the inside of a tubular body such as a porous ceramic tube without wetting it to perform a strength test. The present invention has been completed for the purpose of providing a strength inspection device for a tubular body, which is capable of performing the above-mentioned method and has no risk of water leakage from the periphery of the head.
（問題点を解決するための手段） 本考案は、検査される管状体の内部に挿入される有底円
筒状の弾性膨脹体を、その基部の拡径部をヘッド内部の
圧力流体供給室に収納させてヘッドに固定するととも
に、この拡径部の中心孔を拡径部の環状溝等の内部空間
と直接連通させ、圧力流体の圧力により拡径部を拡径さ
せてその突起を備えた外周壁を圧力流体供給室の内周壁
に密着させたことを特徴とするものである。(Means for Solving the Problems) The present invention is to provide a bottomed cylindrical elastic expansion body to be inserted into a tubular body to be inspected, and to expand a base of the elastic expansion body into a pressure fluid supply chamber inside the head. It is housed and fixed to the head, and the central hole of the expanded diameter portion is directly communicated with the internal space such as the annular groove of the expanded diameter portion, and the expanded diameter portion is expanded by the pressure of the pressure fluid and the projection is provided. The outer peripheral wall is closely attached to the inner peripheral wall of the pressure fluid supply chamber.
（実施例） 次に本考案を図示の実施例について詳細に説明する。(Example) Next, this invention is demonstrated in detail about the Example shown in figure.
図中、（１）は管状体（30）のホルダであり、管状体
（30）はその口部（31）をホルダ（１）に係合させてホ
ルダ（１）の孔（２）内に吊下げられている。（３）は
ホルダ（１）の上方に設けられた昇降動できるヘッド
で、その内部には水のような圧力流体を供給する圧力流
体供給孔（４）及びこれに連通するシール部を持った圧
力流体供給室（５）が設けられている。（６）はアクリ
ロニトリル−ブタジエンゴムのような弾性体からなる有
底円筒状の弾性膨脹体である。In the figure, (1) is a holder for the tubular body (30), and the tubular body (30) has its mouth (31) engaged with the holder (1) to be inserted into the hole (2) of the holder (1). It is suspended. (3) is a head that is provided above the holder (1) and can be moved up and down, and inside thereof has a pressure fluid supply hole (4) for supplying a pressure fluid such as water and a seal portion communicating with this. A pressure fluid supply chamber (5) is provided. (6) is a bottomed cylindrical elastic expansion body made of an elastic body such as acrylonitrile-butadiene rubber.
この弾性膨脹体（６）は管状体（30）の内部に挿入され
る細径部（6a）とその基部に形成された拡径部（6b）と
からなるものであって、この拡径部（6b）をヘッド
（３）の圧力流体供給室（５）に収納した状態でヘッド
（３）の下面に固定した状態で取付けられている。拡径
部（6b）には弾性膨脹体（６）の内部に連通する中心孔
（７）が形成されている。また拡径部（6b）にはこの中
心孔（７）と直接連通する環状溝（８）等の内部空間が
形成されている。実施例では、図示のように弾性膨脹体
（６）の拡径部（6b）の上面と圧力流体供給室（５）の
上面との間にわずかな隙間（９）が形成されており、こ
の隙間（９）を介して中心孔（７）から環状溝（８）の
内部に直接圧力流体が導入される構造となっている。な
お第２図に拡大して示したように、拡径部（6b）の外周
壁には突起（10）を全周にわたり形成し、拡径部（6b）
の外周壁と圧力流体供給室（５）の内周壁との間のシー
ル性を高めるようにしておく。The elastic expansion body (6) is composed of a small diameter portion (6a) inserted into the tubular body (30) and an enlarged diameter portion (6b) formed at the base thereof. (6b) is attached to the lower surface of the head (3) while being housed in the pressure fluid supply chamber (5) of the head (3). A center hole (7) communicating with the inside of the elastic expansion body (6) is formed in the expanded diameter portion (6b). Further, in the expanded diameter portion (6b), an internal space such as an annular groove (8) directly communicating with the central hole (7) is formed. In the embodiment, as shown in the figure, a slight gap (9) is formed between the upper surface of the expanded diameter portion (6b) of the elastic expansion body (6) and the upper surface of the pressure fluid supply chamber (5). The pressure fluid is directly introduced into the annular groove (8) from the central hole (7) through the gap (9). As shown in the enlarged view of FIG. 2, a protrusion (10) is formed on the outer peripheral wall of the expanded diameter portion (6b) over the entire circumference to form the expanded diameter portion (6b).
The sealability between the outer peripheral wall and the inner peripheral wall of the pressure fluid supply chamber (5) is enhanced.
（作用） このように構成されたものは、検査されるべき管状体
（30）をホルダ（１）に図示したようにセットしたうえ
その上方からヘッド（３）を下降させ、ヘッド（３）の
下面から突出している有底円筒状の弾性膨脹体（６）を
管状体（30）の内部に挿入したのちにその内部に圧力流
体を供給して弾性膨脹体（６）を管状体（30）の内部で
膨脹させるものである。(Operation) In the structure thus configured, the tubular body (30) to be inspected is set on the holder (1) as shown in the figure, and the head (3) is lowered from above so that the head (3) is The bottomed cylindrical elastic expansion body (6) protruding from the lower surface is inserted into the tubular body (30), and then a pressure fluid is supplied to the inside of the elastic expansion body (6) to form the tubular body (30). To inflate inside.
これにより管状体（30）の内面には均等な圧力が作用す
ることとなり、この結果、内部に欠陥を有する強度の小
さい管状体（30）はこの内圧に耐えられずに破壊され、
破片は下方へ落下することとなる。またこの内圧によっ
て破壊されなかった管状体（30）は合格品と判定される
が、本考案の装置においては圧力流体は弾性膨脹体
（６）を膨脹させるために用いられるのみであり、従来
のように管状体（30）の内部に直接導入されないので試
験後の管状体（30）は乾燥状態にあり、次工程で乾燥さ
せる必要がない。As a result, a uniform pressure acts on the inner surface of the tubular body (30), and as a result, the tubular body (30) having a defect and having a small strength is broken without being able to withstand this internal pressure.
The debris will fall down. Further, the tubular body (30) which is not destroyed by this internal pressure is judged as a passing product, but in the device of the present invention, the pressure fluid is used only to expand the elastic expansion body (6), Since the tubular body (30) is not directly introduced into the tubular body (30) as described above, the tubular body (30) after the test is in a dry state and does not need to be dried in the next step.
しかも本考案においては、圧力流体は弾性膨脹体（６）
の拡径部（6b）の上面に形成された環状溝（８）等の内
部空間にも中心孔（７）から直接導入されて拡径部（6
b）を外向きに押し拡げ、その外周壁を圧力流体供給室
（５）の内壁面に対して密着させることとなる。またこ
の外周壁には突起（10）が全周にわたり形成されてお
り、シール性を高めているから、圧力水がヘッド（３）
と弾性膨脹体（６）との接続部分から漏れることもなく
なり、所定の圧力を正しく印加することが可能となる。Moreover, in the present invention, the pressure fluid is an elastic expansion body (6).
The expanded portion (6) is also directly introduced from the central hole (7) into the internal space such as the annular groove (8) formed on the upper surface of the expanded portion (6b).
The b) is pushed outward and the outer peripheral wall thereof is brought into close contact with the inner wall surface of the pressure fluid supply chamber (5). In addition, since projections (10) are formed on the outer peripheral wall over the entire circumference to improve the sealing performance, the pressure water is absorbed by the head (3).
No leakage will occur from the connection portion between the elastic expansion body (6) and the elastic expansion body (6), and a predetermined pressure can be correctly applied.
（考案の効果） 本考案は以上の説明から明らかなように、管状体を濡ら
すことなくその内部に均等な圧力を加えて耐内圧強度を
検査することができるものであるから、従来のように検
査後に管状体を乾燥させる工程を必要としない利点があ
る。また本考案においては弾性膨脹体はその拡径部の環
状溝等の内部空間に導入された圧力流体の圧力によって
セルフシールされることとなるから、ヘッドの部分から
圧力流体が漏れるおそれがなくなり、管状体に所定の圧
力を正しく印加することが可能となるうえに周囲が濡れ
たりすることもない利点がある。よって本考案は従来の
問題点を一掃した管状体の強度検査装置として、実用的
価値は極めて大である。(Effect of the Invention) As is apparent from the above description, the present invention is capable of inspecting the internal pressure resistance strength by applying a uniform pressure to the inside of the tubular body without wetting it. There is an advantage that a step of drying the tubular body is not required after the inspection. Further, in the present invention, since the elastic expansion body is self-sealed by the pressure of the pressure fluid introduced into the internal space such as the annular groove of the expanded diameter portion, there is no fear that the pressure fluid leaks from the head portion. There is an advantage that a predetermined pressure can be correctly applied to the tubular body and the surroundings do not get wet. Therefore, the present invention has an extremely great practical value as a strength inspection device for a tubular body that eliminates the conventional problems.
第１図は本考案の実施例を示す断面図、第２図は弾性膨
脹体の拡径部の拡大断面図である。 （３）：ヘッド、（５）：圧力流体供給室、（６）：弾
性膨脹体、（6b）：拡径部、（７）：中心孔、（８）：
環状溝、（30）：管状体FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of an expanded diameter portion of an elastic expansion body. (3): Head, (5): Pressure fluid supply chamber, (6): Elastic expansion body, (6b): Expanded portion, (7): Center hole, (8):
Annular groove, (30): tubular body
Claims (1)
る有底円筒状の弾性膨脹体（６）を、その基部の拡径部
（6b）をヘッド（３）内部の圧力流体供給室（５）に収
納させてヘッド（３）に固定するとともに、この拡径部
（6b）の中心孔（７）を拡径部（6b）の環状溝（８）等
の内部空間と直接連通させ、圧力流体の圧力により拡径
部（6b）を拡径させてその突起（10）を備えた外周壁を
圧力流体供給室（５）の内周壁に密着させたことを特徴
とする管状体の強度検査装置。1. An elastic expansion body (6) having a cylindrical shape with a bottom inserted into a tubular body (30) to be inspected, and a diameter expansion part (6b) at the base thereof is a pressure fluid inside a head (3). It is housed in the supply chamber (5) and fixed to the head (3), and the central hole (7) of the expanded diameter portion (6b) is directly connected to the internal space such as the annular groove (8) of the expanded diameter portion (6b). A tubular shape characterized in that the expanded diameter portion (6b) is expanded by the pressure of the pressure fluid so that the outer peripheral wall having the protrusion (10) is brought into close contact with the inner peripheral wall of the pressure fluid supply chamber (5). Body strength inspection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987195134U JPH074547Y2 (en) | 1987-12-23 | 1987-12-23 | Tubular strength tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987195134U JPH074547Y2 (en) | 1987-12-23 | 1987-12-23 | Tubular strength tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0199048U JPH0199048U (en) | 1989-07-03 |
| JPH074547Y2 true JPH074547Y2 (en) | 1995-02-01 |
Family
ID=31485827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987195134U Expired - Lifetime JPH074547Y2 (en) | 1987-12-23 | 1987-12-23 | Tubular strength tester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074547Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10184866B2 (en) * | 2014-08-08 | 2019-01-22 | Sanofi-Aventis Deutschland Gmbh | Device and method for testing the mechanical integrity of cartridges for liquid medicaments |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539185A (en) * | 1976-07-13 | 1978-01-27 | Kawasaki Heavy Ind Ltd | Airtightness test and pressurized test for pipes |
| JPS588460A (en) * | 1981-07-06 | 1983-01-18 | 株式会社ダイフク | Conveyor utilizing carrying truck |
-
1987
- 1987-12-23 JP JP1987195134U patent/JPH074547Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0199048U (en) | 1989-07-03 |
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