200844356 九、發明說明： L發明所屬之技術領域3 本發明係有關於一種管接頭，該管接頭裝設於欲連結 之一對管體的前端，將其等管體連結，且使其等管體可裝 5 卸地連結。 I：先前技術3 在一種使用鑽石刀片且將半導體或電子零件切斷加工 之溼式切斷裝置中，為抑制加工點的發熱並除去切斷半導 體寺的時候所產生之削屑，而一邊朝加工點供應切削用的 10水，一邊進行加工。切削用的水一使用過後即成廢水，廢 水經過配管而集中在廢水處理設備處理。通常如此廢水處 理設備乃具有用以吸入廢水之唧筒及過濾削屑等之過濾 器。 廢水處理δ又備所使用之過濾器由於捕捉上述削屑等 15等，恐有終至被堵塞之虞衍生。過濾器形成被堵塞之狀態 時，廢水處理設備的處理能力即降低’因此使用一定時間 後就需要更換過濾器。此時，有須要取下上述配管的情況， 為了取下上述配管，而採用-種方式，即事先在配管途中 等等之處設置裝卸式管接頭，以便適時取下管接頭。 20 I卸式管接頭已提供有各種型態例，專利文獻1之 one-touch式連接頭亦是如此管接頭之其中一種型態。 [專利文獻1]θ本實用新型申請案公開公報第”實開順^07”號 I[發明内容3 如上述專利文獻1所揭示者，通常的管接頭為對一邊的 5 200844356 頭構件可裝卸地裝設於另-邊的管接頭構件。依如此 官接頭，在配管間施有壓力之狀態下拆卸時，因内壓而使 兩邊的管接頭構件猛然地相互分開。為此，有難以進行拆 卸作業之問題。 5 目此’本發明之目的係於提供-種管接頭，該管接頭 可有效地防止拆卸時因配管内之壓力而使一對管接頭構件 猛然地相離之情況，可安全且容易進行拆卸作業。 本發明係—種管接頭，該管接頭係圓筒狀螺紋接管裝 卸自如地插入具有圓筒狀螺紋接管插入孔之套筒的前述螺 10紋接管插入孔者，在前述套筒之前述螺紋接管插入孔之内 周面設有固定銷及可動銷，該固定銷朝徑向内側突出，且 該可動銷由該内周面相對於徑向内側進退自如，並且藉一 附勢構件附與勢能，使其由該内周面進出，而前述套筒設 有一使前述可動銷由螺紋接管插入孔之内周面退避之鎖固 I5解除機構，又，前述螺紋接管之插入前述套筒之插入側之 一端部的外周面形成有前述固定銷及前述可動銷分別卡合 之銷卡合溝’而前述銷卡合溝於該插入側之端面開口且朝 向另一端部延伸者，該等銷卡合溝形成有嵌合前述可動銷 之嵌合凹部，並於該嵌合凹部與前述開口之間設有卡止前 20 述固定銷及前述可動銷之銷卡止部，又，前述套筒之内周 面及前述螺紋接管之前端部或外周面分別設有密著部，且 前述密接部在前述套筒之前述可動銷抵達前述螺紋接管之 前述嵌合凹部之狀態下相互液密地密接。 要將本發明之管接頭構造成裝設狀態時，乃如下操 6 200844356 作。首先’形成為藉鎖固解除機構，將套筒之可動銷自螺 紋接管插入孔之内周面退避之狀態，將可動銷與固定銷分 別由銷卡合溝之開口插入而卡合於銷卡合溝。然後，一邊 使各銷沿各銷卡合溝進入，—邊將螺紋接管相對地插入套 5筒之螺紋接管插入孔。當套筒之可動銷抵達螺紋接管之嵌 合凹部時，即結束藉鎖固解除機構實施之可動銷之退避， 將可動銷嵌合於嵌合凹部。在此狀態下，套筒與螺紋接管 液密地相互密接，完成管接頭之連結。反之，由套筒拆除 螺紋接管時，藉鎖固解除機構，使可動銷自嵌合凹部退避， H) -邊使錢沿各針合溝_邊將錢_纟嫌管相對地分 離開來。此時，在配管内有壓力殘留其中時，俟套筒盘螺 紋接管間之密接狀態-解除，同時使配管内之壓力往配管 外釋出’關應其壓力之力而欲使套筒與螺紋接管相分 離。惟，在本發明中，固定銷及可動銷分別卡止於設在銷 15卡合溝之銷卡止部，而使套筒與螺紋接管不分開。 配管内之壓力-釋出時，解除各銷卡止於各卡止部之 狀態，進而，使各鎖-邊沿著各銷卡合溝，並將螺紋接管 相對地離開套筒，各鎖由各卡合溝之開口出去時，則形成 由套筒取下螺紋接管之狀態。 2〇 >依本發明，在配管内還錢力殘留之狀態下將螺紋 接管拆卸套筒時，由於固定銷以及可動銷只要卡於銷卡止 部’即可使套筒與螺紋接管不會-下子猛然地分開，在這 一次操作時，配管内之壓力洩出，形成常壓。接著，下一 實際的將螺紋接管由套筒拆卸之二次操作時，可在常壓之 200844356 狀態下執行。結果可使套筒與螺紋接管之拆卸作業安全且 容易進行者。 、王 10 本發明之管接頭之銷卡合溝，可舉出—種型態，即： 由前述開口大致沿一方向延伸，經一彎曲部，而朝與一周 方向側相反之另i方向側蛇行，且該f曲部形成為前述 銷卡止部。在本型態中，將螺紋接管插人套筒時，在各銷 由開口到制卡止部之前，沿—周方向輯套筒，使套筒 與螺紋接管相對地旋轉’其次，各銷通過各卡止部之後逆 向旋轉。在綠ST，釋放_之—讀作㈣際地將螺 紋接管與純分開之二錢作可進行，具有方便使用 之優點。 [發明之效果] %: 本發明之管接頭係於套筒設置固定銷及可動銷，並於 螺紋接管設置銷卡合溝及銷卡止部，即可使欲自套筒拆卸 15螺紋接管時，釋放配管内殘留之壓力，亦可防止套筒與螺 紋接官一下子猛然地分開。因此，可展現一種可安全且容 易進行套筒與螺紋接管之拆卸作業之效果。 [圖式簡單說明] 第1圖係構成一實施型態之管接頭之各零件之立體圖。 20 第2(a)圖顯示管接頭之螺紋接管之側視圖；第2(b)圖係 由小徑筒部側所看到之螺紋接管之前視圖。 第3(a)圖係由螺紋接管插入孔側看到之套筒之前視 圖，第3(b)圖顯示管接頭之套筒之側視圖。 第4圖顯示由套筒拆卸螺紋接管時之銷的動作之圖。 8 200844356 【資施方式3 第1圖係顯示構成一實施型態之管接頭1之各零件及管 體2、3之立體圖。管接頭1係以圓筒狀螺紋接管10及套筒20 構成。此管接頭1係將螺紋接管10及套筒20分別裝設於管體 5 2、3之前端，將該等管體2、3可裝卸地連結者。 在管體2、3之前端設置分別一體形成有螺帽2b、3b之 連接頭2a、3a。螺紋接管1〇具有成為基底之圓筒狀大徑筒 部11，該大徑筒部11之轴向一端部同軸地形成圓筒狀螺紋 部12。又，套筒20具有成為基底之圓筒狀本體21，在該本 10 體21之軸向一端部同軸地形成圓筒狀螺紋部22(參考第3 圖）°螺紋接管10及套筒20係於螺紋部12、22而與連接頭 2a、3a之螺帽2b、3b各自栓緊，而分別裝設在管體2、3之 前端。在本實施型態中，是使用螺絲方式固定管體及管接 頭（螺紋接管10及套筒20)，但只要是可將管體及管接頭固定 15 之機構時，即不限於此。 如第2圖所示，在螺紋接管1〇之大徑筒部丨丨之與螺絲部 12側相反之側部設有其徑小於大徑筒部丨丨且與大徑筒部同 軸之圓筒狀小徑筒部13。螺紋接管1〇内形成有貫穿大徑筒 部11、螺絲部12及小徑筒部13之管路1〇a。小徑筒部13之外 20周裝設有一以橡膠等彈性構件形成之Ο型環14,且由小徑筒 部13之外周面突出設置該〇型環14。在大徑筒部丨丨之外周， 於小徑筒部η側之端部形成有銷卡合溝15，該銷卡合溝15 於小徑同部13側之端面開口且朝向螺絲部12側延伸。此销 卡合溝15是由開口轴向延伸一點距離後，經過直角之第一 200844356 彎曲部15a，大致沿一周方向延伸，更經過第二彎曲部15b， 沿與一周方向相反側之另一周方向傾斜延伸。在如此蛇行 之銷卡合溝15之尾端部形成一比銷卡合溝15更深之嵌合凹 部16。 5 如第3圖所示，套筒20形成有貫穿本體21及螺絲部22之 管部20a。管部20a之本體21側之端部設有其徑稍大於螺紋 接管10之大徑筒部11且與管路20a同軸之螺紋接管插入孔 23。螺紋接管插入孔23中插入螺紋接管10。又，管部2〇a之 中間部形成有其徑稍大於螺紋接管10之小徑筒部13之中間 1〇 孔24。此中間孔24之徑設定成使〇型環14彈性密接者。將螺 紋接管10插入螺紋接管插入孔23時，螺紋接管1〇之〇型環14 密接於中間孔24之内周面24a。 螺紋接管插入孔23之内周面23a設有朝徑向内側突出 之固定銷25。固定銷25卡合於上述螺紋接管10之銷卡合溝 15 15，並且朝徑向内側突出可卡止彎曲部15a之長度。 本體21之外周面形成軸向延伸之溝21a。此溝21a埋設 有升降件26，升降件26之螺紋接管插入孔23側之前端設有 可動銷27。此可動銷27相對於螺紋接管插入孔23進退自如 地插入貫穿溝21a與螺紋接管插入孔23之孔21c。升降件26 20在溝21a内藉止轉具28支撐且呈可擺動之狀態，止轉具28貫 穿形成在本體21之外周面之一對止轉具用溝2ib。在此升降 件26之與可動銷27側相反之侧之操作側端部26a與溝21 &之 底部之間埋設有彈簧29。升降件26之操作側端部26a藉該彈 簧29而被附與朝徑向外侧前進之勢能，以止轉具28為軸， 200844356 將位於相反側之可動銷27往徑向内側擠入。藉此，可動銷 27始終由螺紋接管插入孔23之内周面23a突出。可動銷27抵 抗彈簧29之力而往徑向内側按壓升降件26之操作側端部 26a ’由螺紋接管插入孔23之内周面23a往徑向外側退避。 5此時，可動銷27由内周面23a不完全退避，形成只稍微突出 内周面23a之狀態。 如第3b圖所示，在本實施型態中，在螺紋接管插入孔 23之内周面以等間隔設置丨個可動銷27及2個固定銷25。由 螺紋接管10拆卸套筒20時，由於只要固定銷25或可動銷27 10之任一者卡止於幫曲部15a即可，因此各銷的個數為一個以 上時，設置幾個亦無妨。 其次’說明本實施型態之管接頭1之作用。連接螺紋接 管10及套筒20時，首先往徑向内側擠壓升降件％之操作侧 端部26a，可動銷27自螺紋接管插入孔23之内周面23a退 15 避。接著，固定銷25沿銷卡合溝15進入，且將螺紋接管1〇 及套筒20順著沿銷卡合溝15之方向旋轉，將螺紋接管1〇插 入套闾20之螺紋接管插入孔23。此外’在途中解除壓住升 降件26之力，可動銷27亦順沿著銷卡合溝15進入。套筒2〇 之可動銷27抵達螺紋接管10之嵌合凹部16時，可動銷27礙 20 合於嵌合凹部16。成為如此狀態時，螺紋接管1〇之〇型環14 彈性且液密地密接於套筒20之中間孔24之内周面24a，即完 成管接頭1之連結。 反之，由螺紋接管10拆卸套筒20時，再次徑向按壓升 降件26之操作側端部26a，使可動銷27由嵌合凹部16退避， 11 200844356 各销25、27往沿著各銷卡合溝15之方向旋轉，使套筒2〇與 螺紋接管10相對地分開。此時，配管内有壓力殘留時，解 除螺紋接管10及套筒2〇間之密接狀態，同時將配管内之壓 力往配管外釋出，以因應此壓力之力，欲使螺紋接管1〇及 5套筒2〇相互離開。惟，固定銷25及可動銷27分別卡止於設 在銷卡合溝15之第2彎曲部i5b，使螺紋接管1〇及套筒2〇不 刀離。當配官内之壓力洩出時，解除各銷25、27卡止於第 二彎曲部15b之狀態，進而各銷沿著各銷卡合溝15，使螺紋 接管10由套筒20相對地離開，當各銷25、27由各卡合溝15 開口離開日寸，成為螺紋接管1 〇由套筒卸下之狀態。 依本發明，在配管内有壓力殘留之狀態下，欲由套筒 20卸下螺紋接管1〇時，固定銷25及可動銷”一旦卡止於第 -、考曲部15b，因此不會—次猛然地使套筒2()及螺紋接管 分開，在該一次操作時先釋放配管内之壓力，可形成常壓。 15接著，在下一實際的將螺紋接管1〇拔出套筒20之二次操作 日守，成為在常壓狀態之下進行者。結果可安全且容易地進 行套筒20與螺紋接管1〇之拆卸作業。 【圖式簡單說明】 第1圖係構成一實施型態之管接頭之各零件之立體圖。 20 第2(a)圖顯示管接頭之螺紋接管之側視圖；第2(b)圖係 由小徑筒部側所看到之螺紋接管之前視圖。 第3(a)圖係由螺紋接管插入孔側看到之套筒之前視 圖；第3(b)圖顯示管接頭之套筒之側視圖。 弟4圖顯不由套简拆卸螺紋接管時之銷的動作之图 12 200844356 【主要元件符號說明】 1…管接頭 20a...管路 10…螺紋接管 21···本體 10a...管路 21a···溝 11…大徑筒部 21b…止轉具用溝 12...螺絲部 21c·..孑 L 13...小徑筒部 23…螺紋接管插入孔 14··. 0型環(密接部） 23a...螺紋接管插入孔之内周面 15...銷卡合溝 24·.·中間孔(密接部） 15a·.·第一彎曲部 24a...内周面 15b_ ·.第二彎曲部(銷卡止部） 25.··固定銷 16...嵌合凹部 26·.·升降件(鎖固解除機構） 2,3...管體 26a...操作側端部 2a，3a···連接頭 27...可動銷 ^3b···螺帽 28...止轉具 20…套筒 29…彈簧(付勢構件） 13200844356 IX. OBJECTS OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a pipe joint which is installed at a front end of a pair of pipe bodies to be connected, and is connected to the pipe body, and the like. The body can be installed with 5 unloading links. I: Prior Art 3 In a wet cutting device that uses a diamond blade and cuts a semiconductor or an electronic component, in order to suppress heat generation at a processing point and remove shavings generated when the semiconductor temple is cut, The processing point is supplied with 10 water for cutting. After the water used for cutting is used, it becomes waste water, and the waste water is collected by the waste water treatment equipment through the piping. Generally, the wastewater treatment equipment is a filter having a cylinder for sucking in the waste water and filtering the shavings and the like. The filter used for the wastewater treatment δ is also used to capture the above-mentioned shavings and the like, and may be derived from the clogging. When the filter is in a blocked state, the processing capacity of the wastewater treatment equipment is lowered. Therefore, it is necessary to replace the filter after a certain period of use. In this case, in the case where the piping is required to be removed, in order to remove the piping, a loading and unloading pipe joint is provided in advance in the middle of piping, etc., so that the pipe joint can be removed in time. The 20 I unloading pipe joint has been provided with various types of examples, and the one-touch type connector of Patent Document 1 is also one of the types of pipe joints. [Patent Document 1] θ This application is published in the Japanese Patent Application Laid-Open No. Hei No. No. No. 1 [Inventive Content 3 As disclosed in the above Patent Document 1, the conventional pipe joint is detachable from the side of the 5 200844356 head member. The pipe joint member is installed on the other side. According to such an official joint, when the pressure is applied between the pipes, the pipe joint members on both sides are suddenly separated from each other due to the internal pressure. For this reason, there is a problem that it is difficult to perform the unloading operation. 5 The purpose of the present invention is to provide a pipe joint which can effectively prevent a pair of pipe joint members from being suddenly separated due to pressure in the pipe during disassembly, and can be safely and easily disassembled. operation. The present invention relates to a pipe joint in which a cylindrical threaded joint is detachably inserted into a screw 10th pipe insertion hole of a sleeve having a cylindrical threaded pipe insertion hole, and the aforementioned threaded pipe of the sleeve The inner peripheral surface of the insertion hole is provided with a fixing pin and a movable pin, and the fixing pin protrudes inward in the radial direction, and the movable pin is retractable from the inner side with respect to the radially inner side, and the potential member is attached by the attached member. The sleeve is provided with the inner peripheral surface, and the sleeve is provided with a locking I5 releasing mechanism for retracting the movable pin from the inner peripheral surface of the nipple insertion hole, and the nipple is inserted into one end of the insertion side of the sleeve. a pin engagement groove ′ in which the fixing pin and the movable pin are respectively engaged with each other is formed on an outer circumferential surface of the portion, and the pin engagement groove is opened at an end surface of the insertion side and extends toward the other end portion, and the pin engagement groove is formed. a fitting recessed portion is provided with the movable pin, and between the fitting recessed portion and the opening, a locking pin 20 and a pin locking portion of the movable pin are provided between the fitting recess and the opening, and an inner circumferential surface of the sleeve is further provided And before Or the distal end portion of an outer circumferential surface of the nipple portion are respectively provided with adhesion, the adhesion portion and the sleeve in the arrival of the movable pin in close contact with each other liquid-tightly fitted state in the recess portion of the nipple. When the pipe joint of the present invention is constructed in an installed state, it is as follows: 200844356. Firstly, the lock mechanism is formed by the lock release mechanism, and the movable pin of the sleeve is retracted from the inner peripheral surface of the screw insertion hole, and the movable pin and the fixed pin are respectively inserted into the pin insertion groove and engaged with the pin. Closure. Then, while the pins are inserted along the respective pin engagement grooves, the nipples are relatively inserted into the nipple insertion holes of the sleeve 5. When the movable pin of the sleeve reaches the engagement recess of the nipple, the retraction of the movable pin by the lock release mechanism is completed, and the movable pin is fitted into the fitting recess. In this state, the sleeve and the nipple are in close contact with each other in a liquid-tight manner to complete the connection of the pipe joint. On the other hand, when the nipple is removed by the sleeve, the lock mechanism is released by the lock release mechanism, so that the movable pin is retracted from the fitting recess, H) - while the money is separated along the respective needle splicing _. At this time, when there is pressure remaining in the pipe, the close contact state between the nipple and the nipple of the ferrule is released, and the pressure in the pipe is released to the outside of the pipe, and the force of the pressure is applied to make the sleeve and the thread. Take over the phase separation. However, in the present invention, the fixing pin and the movable pin are respectively locked to the pin locking portions provided in the engaging grooves of the pin 15, so that the sleeve and the nipple are not separated. When the pressure in the pipe is released, the state in which the pins are locked to the respective locking portions is released, and the lock-edges are engaged with the grooves along the respective pins, and the nipples are relatively separated from the sleeve, and the locks are respectively When the opening of the engaging groove is out, a state in which the nipple is removed by the sleeve is formed. 2〇> According to the present invention, when the nipple is removed from the sleeve in a state where the residual force is left in the piping, the sleeve and the threaded joint are not required because the fixing pin and the movable pin are stuck to the pin locking portion - The next child is suddenly separated. During this operation, the pressure inside the piping is released to form a normal pressure. Next, the next actual operation of detaching the nipple from the sleeve can be performed under normal pressure of 200844356. As a result, the disassembly of the sleeve and the nipple is safe and easy to perform. King 10 The pin engagement groove of the pipe joint of the present invention is exemplified by a type in which the opening extends substantially in one direction and passes through a curved portion toward the other side of the i-direction opposite to the one-way side. The meandering is formed, and the f-curved portion is formed as the pin locking portion. In this type, when the nipple is inserted into the sleeve, before each pin is opened from the opening to the locking portion, the sleeve is sleeved in the circumferential direction, and the sleeve is rotated relative to the nipple. Secondly, each pin passes. Each of the locking portions is rotated in the reverse direction. In the green ST, the release of the _--reading (4) can be carried out with the threaded pipe and the purely separate money, which has the advantage of being convenient to use. [Effects of the Invention] %: The pipe joint of the present invention is provided with a fixing pin and a movable pin in the sleeve, and a pin engaging groove and a pin locking portion are provided in the threaded pipe, so that when the threaded pipe is to be removed from the sleeve, 15 The pressure remaining in the pipe is released, and the sleeve and the threaded joint are suddenly prevented from being suddenly separated. Therefore, it is possible to exhibit an effect that the sleeve and the nipple can be removed safely and easily. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing the components of a pipe joint of an embodiment. 20 Figure 2(a) shows a side view of the nipple of the pipe joint; Figure 2(b) shows a front view of the nipple seen from the side of the small diameter cylinder. Fig. 3(a) is a front view of the sleeve seen from the spigot insertion hole side, and Fig. 3(b) shows a side view of the sleeve of the pipe joint. Figure 4 is a diagram showing the action of the pin when the nipple is removed by the sleeve. 8 200844356 [Capital Mode 3] Fig. 1 is a perspective view showing the components and the tubes 2 and 3 constituting the pipe joint 1 of an embodiment. The pipe joint 1 is composed of a cylindrical screw pipe 10 and a sleeve 20. In the pipe joint 1, the nipple 10 and the sleeve 20 are respectively attached to the front ends of the pipe bodies 5, 3, and the pipes 2, 3 are detachably coupled. The joints 2a, 3a integrally formed with the nuts 2b, 3b are provided at the front ends of the tubular bodies 2, 3. The nipple 1b has a cylindrical large-diameter cylindrical portion 11 which is a base, and a cylindrical screw portion 12 is coaxially formed at one end portion of the large-diameter cylindrical portion 11 in the axial direction. Further, the sleeve 20 has a cylindrical main body 21 as a base, and a cylindrical screw portion 22 is coaxially formed at one end portion of the ten-body 21 in the axial direction (refer to Fig. 3). The nipple 10 and the sleeve 20 are attached. The nuts 2b and 3b of the joints 2a and 3a are respectively fastened to the screw portions 12 and 22, and are respectively attached to the front ends of the tubular bodies 2 and 3. In the present embodiment, the pipe body and the pipe joint (the nipple 10 and the sleeve 20) are fixed by screws, but the present invention is not limited thereto as long as it is a mechanism for fixing the pipe body and the pipe joint. As shown in Fig. 2, a cylinder having a diameter smaller than that of the large-diameter cylinder portion and coaxial with the large-diameter cylinder portion is provided on the side opposite to the side of the screw portion 12 of the large-diameter cylinder portion of the nipple 1〇. The small diameter cylindrical portion 13 is formed. A pipe 1〇a penetrating the large-diameter cylinder portion 11, the screw portion 12, and the small-diameter cylinder portion 13 is formed in the nipple 1'. A Ο-shaped ring 14 formed of an elastic member such as rubber is attached to the outside of the small-diameter cylindrical portion 13 at a 20-week end, and the 〇-shaped ring 14 is protruded from the outer peripheral surface of the small-diameter cylindrical portion 13. On the outer circumference of the large-diameter cylinder portion, a pin engagement groove 15 is formed at an end portion on the side of the small-diameter cylinder portion η, and the pin engagement groove 15 is opened at the end surface on the side of the small-diameter portion 13 and faces the side of the screw portion 12 extend. The pin engaging groove 15 is formed by the first 200844356 curved portion 15a passing through the right angle of the opening, and extends substantially in the circumferential direction, and further passes through the second curved portion 15b in the other circumferential direction opposite to the circumferential direction. Tilt extension. A fitting recess 16 deeper than the pin engaging groove 15 is formed at the end portion of the serpentine engaging groove 15 in this manner. As shown in Fig. 3, the sleeve 20 is formed with a tube portion 20a penetrating the body 21 and the screw portion 22. The end portion of the tubular portion 20a on the body 21 side is provided with a nipple insertion hole 23 having a diameter slightly larger than the large-diameter cylindrical portion 11 of the threaded joint 10 and coaxial with the conduit 20a. A nipple 10 is inserted into the nipple insertion hole 23. Further, the intermediate portion of the pipe portion 2A is formed with a hole 1 in the middle of the small-diameter cylindrical portion 13 having a diameter slightly larger than that of the nipple 10. The diameter of the intermediate hole 24 is set such that the 〇-shaped ring 14 is elastically attached. When the threaded socket 10 is inserted into the nipple insertion hole 23, the 〇-shaped ring 14 of the nipple 1 is in close contact with the inner circumferential surface 24a of the intermediate hole 24. The inner peripheral surface 23a of the nipple insertion hole 23 is provided with a fixing pin 25 projecting radially inward. The fixing pin 25 is engaged with the pin engaging groove 1515 of the above-mentioned nipple 10 and protrudes inward in the radial direction to lock the length of the bent portion 15a. The outer peripheral surface of the body 21 forms an axially extending groove 21a. The groove 21a is embedded with a lifting member 26, and a movable pin 27 is provided at the front end of the reamer insertion hole 23 of the lifting member 26. The movable pin 27 is retractably inserted into the hole 21c of the through groove 21a and the nipple insertion hole 23 with respect to the nipple insertion hole 23. The lifting member 26 20 is supported by the rotating device 28 in the groove 21a and is swingable, and the rotation preventing member 28 is penetrating through one of the outer circumferential surfaces of the body 21 to the rotation preventing groove 2ib. A spring 29 is embedded between the operation side end portion 26a on the side opposite to the movable pin 27 side of the lifter 26 and the bottom of the groove 21 & The operating-side end portion 26a of the elevating member 26 is attached with the potential energy advancing outward in the radial direction by the spring 29, so that the anti-rotation device 28 is a shaft, and the 200844356 pushes the movable pin 27 on the opposite side radially inward. Thereby, the movable pin 27 always protrudes from the inner peripheral surface 23a of the nipple insertion hole 23. The movable pin 27 presses the operation side end portion 26a' of the lifter 26 inward in the radial direction against the force of the spring 29, and is retracted radially outward by the inner peripheral surface 23a of the nipple insertion hole 23. At this time, the movable pin 27 is not completely retracted by the inner peripheral surface 23a, and the inner peripheral surface 23a is slightly protruded. As shown in Fig. 3b, in the present embodiment, one movable pin 27 and two fixed pins 25 are provided at equal intervals on the inner circumferential surface of the nipple insertion hole 23. When the sleeve 20 is detached by the nipple 10, any one of the fixing pin 25 and the movable pin 27 10 can be locked to the bending portion 15a. Therefore, when the number of the pins is one or more, it is possible to provide a few. . Next, the function of the pipe joint 1 of the present embodiment will be described. When the nipple 10 and the sleeve 20 are connected, first, the operation side end portion 26a of the lifter member is pressed radially inward, and the movable pin 27 is retracted from the inner peripheral surface 23a of the nipple insertion hole 23. Then, the fixing pin 25 enters along the pin engaging groove 15, and rotates the nipple 1 〇 and the sleeve 20 in the direction of the pin engaging groove 15, and inserts the nipple 1 〇 into the nipple insertion hole 23 of the ferrule 20 . Further, the force of the lifting member 26 is released on the way, and the movable pin 27 also enters along the pin engaging groove 15. When the movable pin 27 of the sleeve 2〇 reaches the fitting recess 16 of the nipple 10, the movable pin 27 is prevented from engaging the fitting recess 16. In this state, the 〇-shaped ring 14 of the nipple 1 is elastically and liquid-tightly adhered to the inner circumferential surface 24a of the intermediate hole 24 of the sleeve 20, that is, the connection of the pipe joint 1 is completed. On the other hand, when the sleeve 20 is detached by the nipple 10, the operation side end portion 26a of the lifter 26 is again pressed radially, so that the movable pin 27 is retracted by the fitting recessed portion 16, 11 200844356 Each pin 25, 27 goes along each pin card The direction of the grooving 15 is rotated to separate the sleeve 2 相对 from the nipple 10. At this time, when there is pressure remaining in the pipe, the close contact between the nipple 10 and the sleeve 2 is released, and the pressure in the pipe is released to the outside of the pipe, so that the force of the pressure is required to make the nipple 1 5 sleeves 2 离开 leave each other. However, the fixing pin 25 and the movable pin 27 are respectively locked to the second bending portion i5b provided in the pin engaging groove 15, so that the nipple 1〇 and the sleeve 2 are not cut away. When the pressure in the dispensing chamber is released, the states in which the pins 25 and 27 are locked to the second bending portion 15b are released, and the pins are further engaged with the pin 15 along the respective pin engaging grooves 15 so that the nipple 10 is relatively separated from the sleeve 20. When the pins 25 and 27 are separated from each other by the opening of each of the engaging grooves 15, the nipple 1 is detached from the sleeve. According to the present invention, in the state where the pressure is left in the piping, when the nipple 1 is to be removed from the sleeve 20, the fixing pin 25 and the movable pin "once the first and the test portion 15b, and therefore do not" The sleeve 2 () and the nipple are slammed apart one by one, and the pressure in the pipe is released first in the first operation to form a normal pressure. 15 Next, the next actual nipple 1 〇 is pulled out of the sleeve 20 The second operation is performed under normal pressure, and as a result, the sleeve 20 and the nipple 1 拆卸 can be safely and easily disassembled. [Simplified Schematic] Fig. 1 constitutes an embodiment. A perspective view of the parts of the pipe joint. 20 Figure 2(a) shows a side view of the nipple of the pipe joint; Figure 2(b) shows a front view of the threaded pipe seen from the side of the small diameter cylinder. a) The front view of the sleeve seen from the spigot insertion hole side; the third (b) view shows the side view of the sleeve of the pipe joint. The figure 4 shows the action of the pin when the nipple is removed. Figure 12 200844356 [Explanation of main component symbols] 1... Pipe joint 20a... Pipe 10... Snail Take-up 21··· body 10a...pipe 21a···ditch 11...large-diameter tubular portion 21b...turn-stop groove 12...screw portion 21c·..孑L 13...small-diameter cylinder 23... Threaded tube insertion hole 14··. 0-ring (closed portion) 23a... Threaded tube insertion hole inner peripheral surface 15... pin engagement groove 24·.·intermediate hole (closed portion) 15a·. First bending portion 24a... inner circumferential surface 15b_.. second bending portion (pin locking portion) 25.··fixing pin 16... fitting recess 26·.·lifting member (locking release mechanism) 2, 3...tube body 26a...operation side end portion 2a, 3a···connecting head 27... movable pin ^3b···nut 28...stopper 20...sleeve 29... Spring (paying component) 13