JPS606714Y2 - quick pipe fittings - Google Patents

Description

【考案の詳細な説明】 この考案は、冷凍機器やその冷媒管路などの漏れ検査に
用いる迅速管継手に関するものである。[Detailed Description of the Invention] This invention relates to a quick pipe joint used for leak inspection of refrigeration equipment and its refrigerant pipes.

たとえば従来の冷凍機器の漏れ検査は、漏れ検査器と冷
凍機器とを検査に先立ってロウ付けし、検査終了後はそ
のロウ付けを外すことによって行なって来たが、斯るロ
ウ付けによる検査器と冷凍機器との接続では検査がきわ
めて非能率で、そのロウ付けそのものが不充分であれば
、検査結果に影響を与えるため、このロウ付は作業はか
なり慎重に行なわなければならず、検査の遅延を助長す
る原因になるためにかなりの熟練を必要としていた。For example, conventional leak inspections of refrigeration equipment have been carried out by brazing the leak detector and the refrigeration equipment together before the inspection, and then removing the brazing after the inspection. Inspection is extremely inefficient when connecting the refrigeration equipment to the refrigeration equipment, and if the brazing itself is insufficient, it will affect the inspection results, so this brazing work must be done very carefully, and the inspection It required considerable skill to cause delays.

この考案は冷凍機器やその冷媒管路などの漏れ検査には
ロウ付けという熟練が要求される作業を伴っていた点に
鑑み、断る準備作業を一切不要とし、かつ、正確な検査
結果が容易に得られるようにすることを目的とするもの
で以下に本考案の１実施例を図面に基いて説明する。Considering that testing for leaks in refrigeration equipment and their refrigerant pipes involved brazing, which required skill, this idea eliminates the need for any preparatory work and makes it easy to obtain accurate test results. One embodiment of the present invention will be described below with reference to the drawings.

１は冷凍機器の本体の一部、２はその内部に設けられて
いる冷媒通路、３は冷凍機器本体１の側面に突設させた
冷媒通路１の分岐パイプ（以下パイプという）である。1 is a part of the main body of the refrigeration equipment, 2 is a refrigerant passage provided inside the refrigeration equipment, and 3 is a branch pipe (hereinafter referred to as pipe) of the refrigerant passage 1 protruding from the side surface of the refrigeration equipment main body 1.

５はパイプ３内に挿入出来る外径を有し、且っ長尺の管
体で、中心部長手方向に収容孔６を設けると共に、この
管体５の先端内面には段部７を介して上記収容孔６より
やや大径の大径室８が形威されている。Reference numeral 5 is a long tubular body having an outer diameter that can be inserted into the pipe 3, and a housing hole 6 is provided in the longitudinal direction of the center. A large diameter chamber 8 having a slightly larger diameter than the accommodation hole 6 is formed.

９は管体５の先端周囲に複数個設けたテーパ一孔で１、
求心側を大径に、外面側をやや小径に形威し、それぞれ
のテーパ一孔９・・・内に、管体５の先端の壁面の厚さ
より長い直径のボール１０・・・を大径室８側から遊嵌
する。9 is a plurality of tapered holes provided around the tip of the tube body 5;
The centripetal side has a large diameter and the outer surface side has a slightly smaller diameter, and a ball 10 with a diameter longer than the thickness of the wall at the tip of the tube body 5 is inserted into each tapered hole 9. Fit loosely from the chamber 8 side.

管体５の略中間外周に掛止部１１を設けると共に、該管
体の外側に位置させた外筒２０の一端を同管体５に固着
する。A hooking portion 11 is provided at approximately the middle of the outer periphery of the tubular body 5, and one end of an outer cylinder 20 located outside the tubular body is fixed to the tubular body 5.

２１はこの外筒２０内に設けた環状の収容室で、この収
容室２１内に、圧縮ばね２２で背面から弾発させた可動
環２３を前後動可能に収容する。Reference numeral 21 denotes an annular housing chamber provided within the outer cylinder 20, and a movable ring 23, which is resiliently sprung from the back surface by a compression spring 22, is housed in the housing chamber 21 so as to be movable back and forth.

この可動環２３の前面に設けた環状溝２４内にシールリ
ング２５を収容し、該可動環２３は圧縮ばね２２で弾発
されて掛止部１１に掛止されている。A seal ring 25 is accommodated in an annular groove 24 provided on the front surface of the movable ring 23, and the movable ring 23 is latched to the latching portion 11 by a compression spring 22.

また、管体５の後端周面にも外面側が大径で求心側が小
径の複数個のテーパ一孔１２・・・を同一円周上に形成
し、管体５の後端周壁厚より大きい直径の係止ボール１
３・・・をそれぞれ外面方向から遊嵌させる。In addition, a plurality of tapered holes 12 having a large diameter on the outer surface side and a small diameter on the centripetal side are formed on the same circumference on the rear end peripheral surface of the tube body 5, and are larger than the rear end peripheral wall thickness of the tube body 5. Diameter locking ball 1
3... are loosely fitted from the outer surface direction.

係止ボール１３を管体５の中心方向に押し下げるスリー
ブ３０は、前記外筒２０の一端との間に圧縮ばね３１を
弾発させ、このスリーブ３０の内周面には上記係止ボー
ル１３の解放用傾斜面３０′を設けて、同傾斜面を管体
５の自由端側の外周に取り付けた係止リング１４に係合
させるようにして、上記圧縮ばね３１によって必要以上
にスリーブ３０が動くのを阻止している。A sleeve 30 that pushes down the locking ball 13 toward the center of the tubular body 5 springs a compression spring 31 between it and one end of the outer cylinder 20, and the sleeve 30 has an inner peripheral surface of the locking ball 13. A releasing inclined surface 30' is provided so that the inclined surface engages with the locking ring 14 attached to the outer periphery of the free end of the tube body 5, and the sleeve 30 is moved more than necessary by the compression spring 31. It prevents

尚、スリーブ３０の一端は前記外筒２０の後端部１９の
外周を前後動するものであり、更にこのスリーブ３０に
は外筒２０の後端部１９の外周に突設したピン１５の進
入を許容する溝３２を同スリーブ３０の外筒２０側端面
部に設ける。Note that one end of the sleeve 30 moves back and forth on the outer periphery of the rear end 19 of the outer cylinder 20, and a pin 15 protruding from the outer periphery of the rear end 19 of the outer cylinder 20 enters the sleeve 30. A groove 32 is provided on the end surface of the sleeve 30 on the outer cylinder 20 side.

３５は管体５の収容孔６内に前後動可能に収容する耐圧
テスト用挿入筒（以下挿入筒という）で、この挿入筒３
５の軸心部には軸心方向に貫通孔３６を設け、かつ、こ
の挿入筒３５の先端には、前記大径室８内に位置させて
段付操作環３７が固着されている。Reference numeral 35 denotes a pressure test insertion tube (hereinafter referred to as the insertion tube) which is housed in the accommodation hole 6 of the tube body 5 so as to be movable back and forth.
A through hole 36 is provided in the axial center portion of the insertion tube 5 in the axial direction, and a stepped operation ring 37 is fixed to the tip of the insertion tube 35 so as to be located within the large diameter chamber 8.

３８は段付操作環の先端段部に設けた傾斜部で、係止ボ
ール１０・・・を中心方向に逃がす機能を有している。Reference numeral 38 denotes an inclined portion provided at the tip end step of the stepped operation ring, and has the function of releasing the locking balls 10 toward the center.

更に、挿入筒３５の略後部外周には、係止ボール１３・
・・を係合させるための円周溝３９が形成されている。Furthermore, a locking ball 13 is provided on the outer periphery of the insertion tube 35 at the rear thereof.
A circumferential groove 39 is formed for engaging.

４０は可動筒３５の後端外周に設けた締付部で、この締
付部４０はこの考案の迅速管継手の取付時に管体５の後
端と係合させるようにして、この挿入筒３５がこれ以上
は管体５の収容孔６内に進入しないようになっている。Reference numeral 40 denotes a tightening portion provided on the outer periphery of the rear end of the movable tube 35, and this tightening portion 40 is engaged with the rear end of the tube body 5 when the quick pipe joint of this invention is installed. However, it is configured such that it does not enter the accommodation hole 6 of the tube body 5 any further.

４１はホースである。41 is a hose.

次に上記実施例の作用を説明する。Next, the operation of the above embodiment will be explained.

この迅速管継手は、未装着状態では第１図に示すように
、挿入筒３５が管体５の後部側に後退している。In this quick pipe joint, when it is not installed, the insertion tube 35 is retracted to the rear side of the pipe body 5, as shown in FIG.

即ち、管体５の先端に位置する係止ボール１０・・・は
管体５内に没入しており、管体５の後端に位置する係止
ボール１３・・・は挿入筒３５の外周方向に押し出され
、その結果、スリーブ３ｏは前進して外筒２０の外周に
設けた突部１３を切欠部２７内に進入させる。That is, the locking balls 10 located at the tip of the tube 5 are recessed into the tube 5, and the locking balls 13 located at the rear end of the tube 5 are located on the outer periphery of the insertion tube 35. As a result, the sleeve 3o moves forward and causes the protrusion 13 provided on the outer periphery of the outer cylinder 20 to enter the notch 27.

次いで、この状態のこの迅速管継手を、管体５の先端を
パイプ３内に押し込むと、係止ボール１０・・・がパイ
プ３内に位置するときには同ボールは該パイプ３の内壁
面に当接しているので半径方向には移動出来ず、従って
、単にパイプ３の内壁面沿いを回転するのみであるが、
第２図に示すように、係止ボール１０・・・がパイプ３
の後端から外れる位置まで管体３が押し込まれると、係
止ボール１０・・・は半径方向に移動できるので、段付
操作環３７は挿入筒３５と共に前進して係止ボール１０
・・・を半径方向に押し出す。Next, when this quick pipe joint in this state is pushed into the pipe 3 with the tip of the pipe body 5, when the locking balls 10 are located inside the pipe 3, the balls come into contact with the inner wall surface of the pipe 3. Since they are in contact with each other, they cannot move in the radial direction, so they simply rotate along the inner wall surface of the pipe 3.
As shown in FIG. 2, the locking balls 10... are connected to the pipe 3.
When the tubular body 3 is pushed to the position where it comes off from the rear end, the locking balls 10 can move in the radial direction, so the stepped operation ring 37 moves forward together with the insertion tube 35 and the locking balls 10
... is pushed out in the radial direction.

それと同時に、パイプ３の先端は外筒２０内に位置する
可動環２３のシールリング２５と密着し、かつ、圧縮ば
ね２２に抗して可動環２３を後退させる。At the same time, the tip of the pipe 3 comes into close contact with the seal ring 25 of the movable ring 23 located inside the outer cylinder 20, and moves the movable ring 23 backward against the compression spring 22.

この場合第２図に示すように、挿入筒３５は収容孔６内
を前進して係止ボール１０・・・を半径方向に押し出す
が、それと共に、この挿入筒３５の略後部外周に設けた
円周溝３９とテーパ一孔１２・・・とが半径方向から対
向するため、係止ボール１３・・・は円周溝３９と係合
し、その結果スリーブ３０は圧縮ばね３１によって第２
図右方向に前進し、スリーブ３０の内面によって係止ボ
ール１３・・・は中心方向に押圧されて１、管体５と挿
入筒３５とを固着する。In this case, as shown in FIG. 2, the insertion tube 35 advances inside the accommodation hole 6 and pushes out the locking balls 10 in the radial direction, but at the same time, a Since the circumferential groove 39 and the tapered hole 12 . . . face each other in the radial direction, the locking balls 13 .
Moving forward in the right direction in the figure, the locking balls 13 are pressed toward the center by the inner surface of the sleeve 30, thereby fixing the tube body 5 and the insertion tube 35 together.

次いで上記スリーブ３０を円周方向に回転させてスリー
ブ３０の溝３２を外筒２０の突部１５から、少しでもず
らせておけば、誤ってスリーブ３０に外力が加わっても
、このスリーブ３０は突部１５によって行く手を阻止さ
れて係止ボール１３・・・が挿入筒３５の円周溝３９か
ら外れることはない。Next, if the sleeve 30 is rotated in the circumferential direction to displace the groove 32 of the sleeve 30 from the protrusion 15 of the outer cylinder 20, even if an external force is accidentally applied to the sleeve 30, the sleeve 30 will not protrude. The locking balls 13 do not come off the circumferential groove 39 of the insertion tube 35 because they are blocked by the portion 15.

次ニ、パイプ３に連結されているこの考案の迅速管継手
を外す場合には、先ず、上記スリーブ３０を円周方向に
回転させて切欠部３２と突部１５とを軸方向から対向さ
せ、次いで、圧縮ばね３１に抗してスリーブ３０を後退
させ、係止ボール１３・・・を自由状態した後、挿入筒
３５を第２図右方向に引くと、段付操作環３７も共に動
いて開環３７の傾斜部３８がテーパ一孔９・・・半径方
向から対向し、係止ボール１０・・・がテーパ一孔９・
・・内に没入するようになる。Next, when removing the quick pipe joint of this invention connected to the pipe 3, first rotate the sleeve 30 in the circumferential direction so that the notch 32 and the protrusion 15 face each other in the axial direction. Next, the sleeve 30 is moved backward against the compression spring 31 to free the locking balls 13, and then when the insertion tube 35 is pulled to the right in FIG. 2, the stepped operation ring 37 also moves. The inclined portion 38 of the opening ring 37 faces the tapered hole 9 from the radial direction, and the locking ball 10 faces the tapered hole 9.
...becomes immersed within.

そのため、管体５はパイプ３の外に容易に引き出すこと
が出来る。Therefore, the tubular body 5 can be easily pulled out of the pipe 3.

以上、実施例に基いてこの考案を説明したが、この考案
は流体通路１から直角に分岐させた分岐パイプ３の開口
端部に挿着する管継手であって、同分岐パイプ３に挿入
する管体５を主筒体として構威し、同管体５の基部には
、上記分岐パイプ３の流体通路１側開口端部と係脱する
係止ボール１０を内外周両方向に出没自在に設けると共
に、同管体５には、当該管体の内部に気密的に挿入管３
５を挿入して該挿入管３５の外周面に設けた施錠溝３９
と係脱する係止ボール１３を同管体の自由端部に前者と
同様に出没自在に設け、更に、同管体外周部には、放射
方向にピン１５を突設した外筒２０を嵌合すると共に、
当該外筒と上記管体５の間には圧縮ばね２２で付勢した
分岐パイプ開口端部密閉用の可動環２３を摺動自在に嵌
合し、また、上記挿入管３５の基部側には管体５の自由
端側に設けた上記係止ボール１３を外周方向から押圧す
るスリーブ３０を上記突設ピン１５から後退する方向に
圧縮ばね３１で付勢して軸方向に摺動自在に、かつ回転
自在に嵌合するると共に、当該圧縮ばね３１の弾発力に
よる同スリーブ３０の過大運動を阻止する係止リング１
４を設け、また、スリーブ３０の上記外筒２０側端面部
には上記突設ピン１５の進入を許容する溝３２を設け、
同スリーブ３０の内周面部には管体の自由端側に設けた
係止ボール１３を解放味また、上記係止りング１４とを
係合する傾斜面部３０′を設けたものであるから、この
考案は単に分岐パイプ３に向けて若干押し込むだけで同
パイプ３に連結でき、更に、外周面部に回転可能に取り
付けたスリーブ３０に溝３２を設けたことにより、この
スリーブを回転させることにより当該スリーブ３０の妄
りな動きを防止でき、従来から面倒と云われていた漏れ
検査器と冷却機器の接続が簡単、かつ、確実となり、い
ろいろと手数を要した冷凍機器の耐圧テストが容易にで
きるという効果がある。This invention has been explained above based on the embodiments, and this invention is a pipe joint that is inserted into the open end of a branch pipe 3 branched at right angles from the fluid passage 1. The tubular body 5 is configured as a main cylinder, and a locking ball 10 is provided at the base of the tubular body 5 so as to be able to move in and out of both the inner and outer circumferential directions for engaging and disengaging with the open end of the branch pipe 3 on the fluid passage 1 side. At the same time, the tubular body 5 has an insertion tube 3 airtightly inserted into the tubular body.
5 is inserted into the locking groove 39 provided on the outer peripheral surface of the insertion tube 35.
A locking ball 13 that engages and disengages from the tube is provided at the free end of the tube so as to be able to come out and go as desired, and an outer tube 20 having pins 15 protruding in the radial direction is fitted to the outer periphery of the tube. At the same time,
A movable ring 23 for sealing the opening end of the branch pipe, which is biased by a compression spring 22, is slidably fitted between the outer cylinder and the tube body 5. A sleeve 30 that presses the locking ball 13 provided on the free end side of the tube body 5 from the outer circumferential direction is biased by a compression spring 31 in a direction retreating from the protruding pin 15 so as to be slidable in the axial direction, A locking ring 1 that is rotatably fitted and prevents excessive movement of the sleeve 30 due to the elastic force of the compression spring 31.
4, and a groove 32 is provided on the end surface of the sleeve 30 on the side of the outer cylinder 20 to allow the protruding pin 15 to enter therein,
The inner circumferential surface of the sleeve 30 is provided with an inclined surface portion 30' for releasing the locking ball 13 provided on the free end side of the tube body and engaging the locking ring 14. The idea is that the sleeve 30 can be connected to the branch pipe 3 by simply pushing it slightly toward the branch pipe 3, and by providing a groove 32 in the sleeve 30 rotatably attached to the outer circumferential surface, the sleeve can be connected by rotating the sleeve. 30, the connection between the leak detector and the cooling equipment, which had been said to be troublesome in the past, is now simple and reliable, and the pressure resistance test of the refrigeration equipment, which required various steps, can be easily performed. There is.

また、この考案は、冷凍機器との接続を、分岐パイプの
基部に係合する複数個の係止ボール１０によって行なう
ものであって、当該掛止ボールを出没させる機構は分岐
パイプ３の長さの長短によってなんら影響を受けること
がないから、冷凍機器から僅かに突出した分岐パイプ（
冷媒配管）に対しても、従来のロウ付けする場合に比べ
ると連結がきわめて容易となり、更には、軸方向の長さ
を、い】換えれば管継手の大きさを全体的に著しく小形
化することができるから、管継手の小形化にも貢献し、
取扱いやすいという効果がある。Further, in this invention, the connection with the refrigeration equipment is performed by a plurality of locking balls 10 that engage with the base of the branch pipe, and the mechanism for making the locking balls appear and retract is the length of the branch pipe 3. The branch pipe that protrudes slightly from the refrigeration equipment (
It is also much easier to connect refrigerant pipes than with conventional brazing, and by changing the axial length, the overall size of the pipe joint can be significantly reduced. This also contributes to the downsizing of pipe fittings.
It has the effect of being easy to handle.

【図面の簡単な説明】[Brief explanation of the drawing]

図面はこの考案の１実施例を示すもので、第１図は分岐
パイプに挿入したときの一部切断側面図、第２図は分岐
パイプに完全連結した状態の縦断側面図、第３図はスリ
ーブの切欠部と管体の突部との関係を示す平面図である
。 ３は分岐パイプ、５は管体、９，１２はテーパ一孔、１
０は係止ボール、１３は係止ボール、１５は突部、２２
は圧縮ばね、２３は可動環、３０はスリーブ、３１は圧
縮ばね、３２は溝部、３５は挿入筒、３７は段付操作環
、３８は傾斜部、３９は凹溝。The drawings show one embodiment of this invention; Fig. 1 is a partially cutaway side view when inserted into a branch pipe, Fig. 2 is a vertical sectional side view when it is fully connected to the branch pipe, and Fig. 3 is a side view showing the state in which it is fully connected to the branch pipe. FIG. 3 is a plan view showing the relationship between the notch of the sleeve and the protrusion of the tube. 3 is a branch pipe, 5 is a pipe body, 9 and 12 are tapered holes, 1
0 is a locking ball, 13 is a locking ball, 15 is a protrusion, 22
23 is a compression spring, 23 is a movable ring, 30 is a sleeve, 31 is a compression spring, 32 is a groove portion, 35 is an insertion cylinder, 37 is a stepped operation ring, 38 is an inclined portion, and 39 is a concave groove.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 流体通路１から直角に分岐させた分岐パイプ３の開口端
部に挿着する管継手であって、同分岐パイプ３に挿入す
る管体５を主筒体として構威し、同管体５の基部には、
上記分岐パイプ３の流体通路１側開目端部と係脱する係
止ボール１０を内外周両方向に出没自在に設けると共に
、同管体５は、当該管体の内部に気密的に挿入管３５を
挿入して該挿入管３５の外周面に設けた施錠溝３９と係
脱する係止ボールを同管体の自由端部に前者と同様に出
没自在に設け、更に、同管体外周部には、放射方向にピ
ン１５を突設した外筒２０を嵌合すると共に、当該外筒
と上記管体５の間には圧縮ばね２２で付勢した分岐パイ
プ開口端部密閉用の可動環２３を摺動自在に嵌合し、ま
た、上記挿入管３５の基部側には管体５の自由端側に設
けた上記係止ボール１３を外周方向から押圧するスリー
ブ３０を上記突設ピン１５から後退する方向に圧縮ばね
３１で付勢して軸方向に摺動自在に、かつ回転自在に嵌
合すると共に、当該圧縮ばね３１の弾発力による同スリ
ーブ３０の過大運動を阻止する係止リング１４を設け、
また、スリーブ３０の上記外筒２０側端面部には上記突
設ピン１５の進入を許容する溝３２を設け、同スリーブ
３０の内周面部には管体の自由端側に設けた係止ボール
１３を解放し、また、上記係止リング１４とも係合する
傾斜面部３０′を設けた迅速管継手。This is a pipe joint that is inserted into the open end of a branch pipe 3 branched at right angles from a fluid passage 1, and a pipe body 5 inserted into the branch pipe 3 serves as the main cylinder. At the base,
A locking ball 10 that engages with and disengages from the open end on the fluid passage 1 side of the branch pipe 3 is provided so as to be freely retractable in both the inner and outer periphery directions, and the tube body 5 is airtightly inserted into the insertion tube 35 inside the tube body. A locking ball is provided at the free end of the tube so that it can be retracted and retracted from the locking groove 39 provided on the outer circumferential surface of the insertion tube 35 by inserting the locking ball. An outer cylinder 20 having pins 15 protruding in the radial direction is fitted therein, and a movable ring 23 for sealing the opening end of the branch pipe is inserted between the outer cylinder and the tube body 5 and is biased by a compression spring 22. In addition, on the base side of the insertion tube 35, a sleeve 30 that presses the locking ball 13 provided on the free end side of the tube body 5 from the outer circumferential direction is attached from the protruding pin 15. A locking ring that is biased in the retreating direction by a compression spring 31 and fitted so as to be slidable and rotatable in the axial direction, and that prevents excessive movement of the sleeve 30 due to the elastic force of the compression spring 31. 14,
Further, a groove 32 is provided on the end surface of the sleeve 30 on the side of the outer tube 20 to allow the protrusion pin 15 to enter, and a locking ball is provided on the inner peripheral surface of the sleeve 30 on the free end side of the tube body. 13 and is provided with an inclined surface portion 30' which also engages the locking ring 14.