WO2017002248A1 - 管継手 - Google Patents
管継手 Download PDFInfo
- Publication number
- WO2017002248A1 WO2017002248A1 PCT/JP2015/069063 JP2015069063W WO2017002248A1 WO 2017002248 A1 WO2017002248 A1 WO 2017002248A1 JP 2015069063 W JP2015069063 W JP 2015069063W WO 2017002248 A1 WO2017002248 A1 WO 2017002248A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sleeve
- collar
- notch
- convex portion
- retaining member
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000004323 axial length Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/24—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action
Definitions
- the present invention relates to a pipe joint for forming a pipe line in a temporary pipe line temporarily installed for water supply and sewerage work, gas work, or replacement pipes in a factory. .
- first pipe body in order to connect a certain pipe (first pipe body), another pipe (second pipe body) has an opening capable of accommodating the end of the first pipe body.
- the attached sleeve is attached.
- At least one convex portion is installed (for example, welded) on the first tubular body so as to protrude outward in the radial direction.
- the other sleeve installed at the end of the second tubular body is provided with a notch that can receive the convex and guide it further inwardly at a part of the opening end.
- this separate sleeve is formed with a recess that is connected to the notch, receives the projection from the notch, and restricts the movement in the longitudinal direction of the sleeve while freely guiding the rotation in the inner circumferential direction. Yes.
- Patent Document 1 when the convex portion of the first tubular body is guided by the concave portion of the second tubular body, the notched portion and a part of the concave portion are blocked and the convex portion from the notched portion
- a retaining member for example, a resin mounting body
- Patent Document 2 discloses a detachment preventing device configured with bolts and nuts instead of a resin mounting body.
- the present invention solves the above-mentioned problems, that is, a pipe joint that improves operability (handling) in connection work between pipes and facilitates repair work of components damaged during connection or maintenance.
- the purpose is to provide.
- the present inventor has come up with a structure in which only a convex portion (and a member in the vicinity of the convex portion) that is usually directly welded to one of the pipe main bodies engaged with each other can be turned with respect to the main body. If this structure is adopted, the tube can be easily engaged with the other tube by simply swiveling the convex part, and repair work can be easily performed even if parts such as the convex part are damaged. As a result, the present invention has been completed.
- the pipe joint of the present invention has at least the following features and configurations.
- a pipe joint comprising: The first sleeve (10) A first collar (11) having a first outer diameter (D11);
- the first sleeve (10) is disposed closer to the first tubular body (1) than the first collar (11) and is smaller than the outer diameter (D1) and the first outer diameter (D11) of the first tubular body (1).
- Second collar (12) having a second outer diameter (D12) for forming a groove (12t) on the outer periphery;
- the inner diameter (d13) is larger than the second outer diameter (D12) of the second collar (12), and without falling off from the first sleeve (10) by both walls (12tw) of the groove (12t),
- a third collar (13) rotatable in the outer circumferential direction;
- the third collar (13) includes at least one first protrusion (14) protruding outward in the radial direction,
- the first collar (11) has a first outer diameter (D11) and an inner diameter (d20) that is larger than the third outer diameter (D13) of the third collar (13), and is first inward from the open end (23).
- a pipe joint, wherein a retaining member (30a, 30b) for preventing the first convex portion (14) from falling off is detachably attached to the second sleeve (20).
- a second recess (24) is formed on the peripheral surface of the second sleeve (20) near the notch (21),
- the retaining member (30a) has a U-shaped cross section, and has a groove (31) having a width corresponding to the thickness of the second sleeve (20) in the vicinity of the notch (21), On at least one side surface of the groove (31), when the retaining member (30a) is disposed in the notch portion (21), a second convex portion that can be engaged with the second concave portion (24) ( 32)
- a second recess (24) is formed on the outer peripheral surface of the second sleeve (20) near the notch (21),
- the retaining member (30b) has an L-shaped cross section, and one end of the piece (33) is third so that the L-shaped piece (33) is erected on the outer periphery of the third collar (13).
- the first protrusion (14) passes through the notch (21) and extends along the first recess (22).
- the retaining member (30b) After the movement in the circumferential direction, the retaining member (30b) is moved to the first convex portion (30b) so that the circumferential position of the retaining member (30b) is disposed at the circumferential position of the notch (21). 14) is attached to the outer peripheral surface of the third collar (13) with a phase difference in the circumferential direction.
- the retaining member (30b) is disposed on the inner surface of the other piece (34) facing the third collar (13) in correspondence with the notch (21), the second recess ( 24)
- the third collar that is rotatable in the outer circumferential direction with respect to the first pipe body is provided, and the third collar engages with the first recess provided on the peripheral surface of the second pipe body.
- the first tubular body can be easily attached to and detached from the second tubular body simply by moving the third collar with the first convex portion.
- the retaining member to be attached after connecting the first pipe body and the second pipe body forms an L-shaped cross section. More specifically, the end of the one piece is connected to the third collar so that the one piece of the L-shape stands on the outer periphery of the third collar, and the other piece of the L-shape is shaped like a cantilever. Extends to one color side.
- the retaining member having such a structure, not only the first tube body and the second tube body can be connected but also fixed only by rotating and translating only the third collar.
- the retaining member since the retaining member is always connected to the third collar on the first main body side, the retaining member will not be lost suddenly during operation of the pipe joint or during maintenance, and connection of the tubular body The work can be made easier and in a shorter time.
- FIG. (A) And (B) shows the disassembled perspective view of the 1st sleeve of Example 1 and Example 2.
- FIG. (A) shows the front view of the 2nd sleeve of Example 1
- (B) shows the longitudinal direction sectional drawing.
- (A) is a longitudinal sectional view of the pipe joint (before assembly) of the first embodiment
- (B) and (C) are front views immediately after the first sleeve of the first embodiment is inserted into the second sleeve.
- FIG. 1 A figure and sectional drawing are shown, and (D) and (E) show the front view and sectional view in the state where the 1st convex part and the handle were further rotated 90 degrees.
- the pipe joint of Example 1 comprises the structure of a shaft object, only a half structure from a shaft is shown.
- (A) And (B) shows the front view and sectional drawing of the state immediately after inserting the 1st sleeve of Example 2 in the 2nd sleeve
- (C) and (D) are the 1st convex part and retaining.
- the front view and sectional drawing of the state which rotated the member 90 degrees are shown.
- the pipe joint of Example 2 also comprises a structure of a shaft object, only a half structure from the shaft is shown.
- the pipe joint of the present invention has one pipe (hereinafter referred to as a first pipe body 1; indicated by a two-dot chain line in FIG. 1) and the other pipe (hereinafter referred to as a second pipe body 2. Similarly, two points. It is used to connect to each other.
- FIG. 1 to 4 show the pipe joint of Example 1.
- FIG. The pipe joint mainly includes a first sleeve 10 connected to the first pipe body 1 and a second sleeve 20 connected to the second pipe body 2 and having an opening capable of accommodating the first sleeve 10.
- the connection of the first and second sleeves 10 and 20 to the first and second tubular bodies 1 and 2 is realized by, for example, welding, bonding, or other known connection methods.
- the first sleeve 10 may include a plurality of cylindrical bodies (first, second, and third collars 11, 12, and 13 in this embodiment) as shown in FIG.
- FIG. 2A is an exploded perspective view of the first sleeve 10 according to the first embodiment including these components.
- FIG. 2B shows an exploded perspective view of the first sleeve 10 of the second embodiment.
- the first collar 11 may be located farthest from the first tubular body 1 and may have a first outer diameter D11.
- the second collar 12 is disposed closer to the first tubular body 1 than the first collar 11, and has a second outer diameter D12 that is smaller than the outer diameter D1 of the first tubular body 1 and the first outer diameter D11 of the first collar 11.
- the groove 12 t is formed on the outer periphery of the second collar 12.
- the third collar 13 has an inner diameter d13 (see FIG. 2A) larger than the second outer diameter D12 of the second collar 12, and the first sleeve 10 is formed by the presence of both walls 12tw and 12tw of the groove 12t. Without falling off from the groove 12t, the groove 12t is supported so as to be rotatable in the outer circumferential direction.
- the third collar 13 is provided with at least one (two in the drawing) first convex portion 14 protruding outward in the radial direction. Further, the third collar 13 has a handle 15 that assists in the rotation operation of the third collar 13 (that is, the first convex portion 14) relative to the stationary first and second collars 11 and 12, rather than the first convex portion 14. It is preferable that the first protrusion 14 is provided behind the longitudinal direction (that is, at a position closer to the first tubular body 1). Thereby, introduction and turning operation of the 1st convex part 14 to the notch part 21 and the 1st recessed part 22 of the 2nd sleeve 20 mentioned later become easy.
- the handle 15 is positioned behind the first convex portion 14 (the insertion direction is positive), and a predetermined distance (first convex portion) from the first convex portion 14. It is further preferable that 14 be separated from the opening end 23 of the second sleeve 20 by a distance that can move in the longitudinal direction from the opening 23 to the first recess 22) and protrude from the outer periphery of the third collar 13.
- the handle 15 is disposed at a position (more preferably equal) corresponding to the circumferential position of the first convex portion 14 with respect to the circumferential position of the third collar 13 with respect to the axis O of the third collar 13. It is preferable.
- the first convex portion 14 is accommodated / turned in the first concave portion 22 of the second sleeve 20 and the first convex portion 14 is no longer exposed to the outside, the first convex portion 14 and the circumferential direction are eliminated.
- the accommodation position of the first convex portion 14 can be easily grasped, and the operability is improved.
- the second sleeve 20 connected to the second tubular body 2 has an inner diameter d20 larger than the first outer diameter D11 of the first collar 11 and the third outer diameter D13 of the third collar 13, and from the opening end 23.
- An inner peripheral surface 20i for guiding the first sleeve 10 is provided on the inner back side (see FIG. 3A).
- a notch 21 is provided in a part of the opening end 23 (two places in the illustrated example). Since the notch portion 21 receives the first convex portion 14, the first sleeve 10 can be further guided to the inner back side of the second sleeve 20.
- the second sleeve 20 is provided with a first concave portion 22 that is connected to the notch portion 21, slides the first convex portion 14 from the notch portion 21, and can accommodate the first convex portion 14.
- the first concave portion 22 is engraved in the inner peripheral direction of the second sleeve 20, and guides the first convex portion 14 so as to allow rotation in the inner peripheral direction while restricting movement in the longitudinal direction to some extent. To do.
- the first convex part 14 passes through the notch part 21 and hits the first concave part 22 (see FIGS. 4B and 4C), and is then guided (turned) in the inner circumferential direction of the first concave part 22. Then, the notch 21 and a part of the first recess 22 connected thereto become an open space (see FIGS. 4D and 4E). In order to block this space and prevent the first convex portion 14 (that is, the first sleeve 10) from falling off from the notch portion 21, in the first embodiment, as shown in FIG. 1 and FIG. A stop member 30 a (for example, a resin member) is detachably attached to the second sleeve 20.
- a stop member 30 a for example, a resin member
- the member 30a not only restricts the free rotation of the first convex portion 14 along the first concave portion 22, but also prevents the first convex portion 14 from returning to the cutout portion 21 communicating with the outside. Therefore, there is no possibility that an unexpected situation may occur in which the first sleeve 10 (that is, the first tube 1) is detached from the second sleeve 20 (that is, the second tube 2).
- a second recess 24 is preferably formed on the peripheral surface of the second sleeve 20 in the vicinity of the notch 21 (which is an outer peripheral surface in Example 1, but may be an inner peripheral surface).
- the retaining member 30 a has a U-shaped cross section and has a groove 31 having a width corresponding to the thickness of the second sleeve 20 near the notch 21. It is preferable that at least one side surface of the groove 31 is provided with a second convex portion 32 that can be engaged with the second concave portion 24 when the retaining member 30 a is disposed in the notch portion 21.
- the second sleeve 20 has a third recess 25 (see FIG. 3B) on the inner peripheral surface that is deeper than the first recess 22 (position closer to the second tubular body 2 side), and corresponds to this.
- the ring seal 26 (see FIG. 4 (A) and the like) having the dimensions described above may be attached, thereby ensuring the sealing performance of the pipe joint.
- FIG. 5 (A) to (D) show the pipe joint of Example 2.
- the pipe joint of the second embodiment also includes the first sleeve 10 connected to the first tube body 1 and the second sleeve 20 connected to the second tube body 2.
- the structures of the first sleeve 10 and the second sleeve 20 of the second embodiment are substantially the same as the structures of the components 10 and 20 employed in the first embodiment, and a repetitive description is omitted.
- the second embodiment differs from the first embodiment in the structure of the retaining member 30b and the position of the handle provided on the outer peripheral surface of the third collar 13, and these points will be described mainly.
- FIG. 2B shows a perspective view of the first sleeve 10 including the third collar 13 of the second embodiment and the retaining member 30b installed on the third collar 13.
- the retaining member 30b according to the second embodiment may be formed in an L-shaped cross section including one piece 33 and another piece 34 as shown in FIG. Specifically, one end of the one piece 33 abuts the third collar 13 perpendicularly so that the L-shaped piece 33 stands on the outer periphery of the third collar 13. Further, the other L-shaped piece 34 is supported in a cantilever shape so as to extend horizontally from the other end of the one piece 33 to the first collar 11 side. Note that the length of the piece 33 (height protruding from the third collar) is set to a size corresponding to the outer diameter of the second sleeve 20 (particularly, the outer diameter in the vicinity of the second recess 24). It is preferable. For example, in FIG.
- the sum of the outer diameter of the third collar 13 from the axis O and the height of the piece 33 (the sum of the distances) and the outer diameter of the second sleeve 20 are substantially equal. Is set. Thereby, the retaining member 30 b provided on the third collar 13 can be easily assembled to the second sleeve 20.
- a second retaining member 30 b is engageable with the second recess 24 of the second sleeve 20 when the retaining member 30 b is disposed in the notch portion 21.
- the convex part 32 may be provided. With this configuration, the engagement of the retaining member 30a pushed into the notch 21 is more reliable.
- the tip of the other piece 34 it is preferable to form the tip of the other piece 34 so that it slightly hangs down (specifically, it slightly tilts closer to the outer peripheral surface of the third collar 13 than its base end). Accordingly, when the third collar 13 is inserted into the second sleeve 20, the tip of the other piece 34 of the retaining member 30 a is in a state of lightly pressing the outer peripheral surface of the third collar 13. 10 becomes difficult to separate from the second sleeve 20, and once the second convex portion 32 is engaged with the second concave portion 24, the engagement is difficult to be released. Of course, the engagement can be released by applying an external force by the operator's hand or the like.
- the retaining member 30 b has a “phase difference” (90 ° in the illustrated example) in the circumferential direction with respect to the first convex portion 14, and is attached on the outer peripheral surface of the third collar 13.
- the retaining member 30b is arranged on the third collar 13 so that the projected area of the retaining member 30b does not overlap the projected area of the first convex portion 14. What is necessary is just to be provided.
- phase difference (different circumferential arrangement of the members 30b and 14) allows the retaining member 30b to be attached to the second sleeve 20 in the following manner.
- the first convex portion 14 is guided to the first concave portion 22 through the notch portion 21 (see FIGS. 5A and 5B). reference).
- the retaining member 30b exists at a circumferential position different from the circumferential position of the notch portion 21.
- the third collar 13 that is, the first convex portion 14
- the first convex portion 14 when the first convex portion 14 reaches a predetermined position (for example, turns 90 °), the first convex portion 14 is provided at the third collar 13 and simultaneously with the first convex portion 14.
- the pivoting retaining member 30b is arranged at a circumferential position corresponding to the notch 21.
- the second sleeve 32 of the retaining member 30b is engaged with the second recess 24 provided on the outer periphery of the second sleeve 20 and in the vicinity of the notch 21, so that the first sleeve 10 is 2 is securely fixed to the sleeve 20.
- the width of the groove 12t of the second collar 12 is made larger than the length (axial length) of the third collar 13.
- the width of the groove 12t is obtained by adding a distance (clearance) that allows the third collar 13 to move (shift) in the groove 12t back and forth in the axial direction by a certain amount to the length of the third collar 13.
- the shift distance is preferably set to be the sum of the axial length of the notch 21 and the axial length (that is, the width) of the first recess 22.
- the third collar 13 provided with the retaining member 30 b is attached to the first sleeve 10 even when the sleeves 10, 20 remain stationary.
- the first convex portion 14 and the first concave portion 22 provided on the third collar 13 can be engaged and disengaged depending on the degree of freedom of movement. It will be possible to execute without difficulty.
- the piece 33 of the retaining member 30b according to the second embodiment also serves as the handle 15 according to the first embodiment. If the phase difference between the first convex portion 14 and the retaining member 30b is also set to a predetermined value (90 ° in the illustrated example), even the first convex portion 14 accommodated in the second sleeve 20 and no longer exposed is Since the position of the 1st convex part 14 can be easily estimated based on the position of the retaining member 30b, the operativity of the pipe joint of this invention improves further.
- the present invention can be modified and added to the structures shown in the embodiments without departing from the spirit of the present invention.
- the circumferential phase difference is not limited to 90 °, and an arbitrary angle is adopted. Also good.
- the first collar 11 and the second collar 12 are integrated from the beginning (for example, a part of one circular pipe is cut to have a small outer diameter (that is, the second However, it is also possible to prepare the first collar 11 and the second collar 12 separately and subsequently connect them in the axial direction (for example, weld).
- connection work using the pipe joint of the present invention it is only necessary to turn the above-described third collar portion, and it is necessary to rotate the body of the heavy and long first pipe body that was essential for the conventional connection work. No. For this reason, it is expected that the connection work does not require excessive force or posture from the worker, and is safer, easier, and requires less labor. Therefore, the present invention has very high industrial utility value and industrial applicability.
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- General Engineering & Computer Science (AREA)
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
しかしながら、特許文献1,2に開示の継手構造においては、第2管体側のスリーブとの係合を行う重要部材の一つである凸部が第1管体に直接溶接されている。このため、凸部をスリーブの開口へ向けて挿入(水平移動)させたり、スリーブ内の凹部に沿って回転させたり、あるいは凸部位置の微調整を行ったりする場合、凸部のみならず第1管体全体を移動・回転させなければならない。とりわけ第1管体の寸法(長さや直径)や重量が極端に大きい場合には、管継手での管体同士の接続作業は困難を極め、作業員の健康や安全を害す恐れもある。
管体接続作業や接続後のメンテナンス作業において、第1管体の凸部などの部品が破損してしまう場合もある。このような場合、上記継手構造では、破損部分の修復の為に、第1管体の全体を取り外す必要があり、それに掛かる労力も必要となる。従って、修復作業を容易にできるよう、第2管体と直接係合する部材及びその近傍の部分のみを簡易に移動(好ましくは、水平移動や回転)できる構造であることが望ましい。
(態様1)
第1管体(1)に接続された第1スリーブ(10)と、
第2管体(2)に接続されかつ第1スリーブ(10)を収容可能な開口を有した第2スリーブ(20)と、
を備えた管継手であって、
第1スリーブ(10)は、
第1外径(D11)を有した第1カラー(11)と、
第1カラー(11)より第1管体(1)側に配置され、かつ、第1管体(1)の外径(D1)及び第1外径(D11)より小さく、第1スリーブ(10)の外周上に溝部(12t)を形成させる第2外径(D12)を有した第2カラー(12)と、
第2カラー(12)の第2外径(D12)より大きい内径(d13)を有し、かつ、前記溝部(12t)の両壁(12tw)によって第1スリーブ(10)から脱落すること無く、外周方向に回転自在な第3カラー(13)と、
を備え、
第3カラー(13)は、径方向外側に突出した少なくとも1つの第1凸部(14)を備え、
第2スリーブ(20)は、
第1カラー(11)の第1外径(D11)と第3カラー(13)の第3外径(D13)より大きい内径(d20)を有し、開口端(23)より内側奥方に第1スリーブ(10)を案内する内周面(20i)と、
開口端(23)の一部に設けられ、第1凸部(14)を受け入れ、かつ、第1スリーブ(10)を第2スリーブ(20)の内側奥方にさらに案内可能な切欠き部(21)と、
前記切欠き部(21)に接続し、前記切欠き部(21)から第1凸部(14)を受け入れ、第2スリーブ(20)の内周方向に第1凸部(14)を回転自在に案内する第1凹部(22)と、
を備え、
第1凸部(14)が第1凹部(22)に案内された際に、前記切欠き部(21)及び第1凹部(22)の一部を塞ぐとともに、前記切欠き部(21)からの第1凸部(14)の脱落を防止する抜止め部材(30a,30b)が第2スリーブ(20)に着脱自在に取りつけられることを特徴とする管継手。
(態様2)
第2スリーブ(20)の前記切欠き部(21)付近の周面には第2凹部(24)が形成され、
前記抜止め部材(30a)は断面U字状を形成し、前記切欠き部(21)付近の第2スリーブ(20)の肉厚に対応する幅を有した溝(31)を有し、
該溝(31)の少なくとも1つの側面には、前記抜止め部材(30a)を前記切欠き部(21)に配置した際に、第2凹部(24)に係合可能な第2凸部(32)が設けられていることを特徴とする態様1記載の管継手。
(態様3)
第2スリーブ(20)の前記切欠き部(21)付近の外周面には第2凹部(24)が形成され、
前記抜止め部材(30b)は断面L字状を形成し、該L字の一片(33)が第3カラー(13)の外周上に立設するように該一片(33)の一端が第3カラー(13)に接続し、かつ、該一片(33)の他端から該L字の他片(34)が第1カラー(11)側へ延びるように片持ち梁状に支持され、
第1スリーブ(10)と第2スリーブ(20)との組付けのために、第1凸部(14)が前記切欠き部(21)を通過させて第1凹部(22)に沿って内周方向に移動した後に、前記抜止め部材(30b)の周方向位置が前記切欠き部(21)の周方向位置に配置されるように、前記抜止め部材(30b)が第1凸部(14)に対して周方向に位相差を付けて第3カラー(13)の外周面に取り付けられており、
第3カラー(13)へ対面する前記他片(34)の内側面には、前記抜止め部材(30b)が前記切欠き部(21)に対応して配置された際に、第2凹部(24)に係合可能な第2凸部(32)が設けられていることを特徴とする態様1記載の管継手。
(態様4)
第3カラー(13)には、第1凸部(14)の回転操作を助けるハンドル(15,33)が、第1凸部(14)よりも長手方向後方にかつ第1凸部14から離間して設けられていることを特徴とする態様1~3のいずれかに記載の管継手。
2 第2管体
10 第1スリーブ
11 第1カラー
12 第2カラー
12t 第2カラーの外周面に形成された溝部
12tw 溝部の壁
13 第3カラー
14 第1凸部
15 ハンドル
20 第2スリーブ
20i 内周面
21 切欠き部
22 第1凹部
23 第2スリーブの開口端
24 第2凹部
25 第3凹部
26 リングシール
30a,30b 抜止め部材
31 抜止め部材の溝
32 抜止め部材に設けられた第2凸部
33,34 抜止め部材を構成する一片(ハンドル),他片
D1 第1管体の外径
D11 第1カラーの第1外径
D12 第2カラーの第2外径
D13 第3カラーの第3外径
d13 第3カラーの内径
d20 第2スリーブの内径
Claims (4)
- 第1管体(1)に接続された第1スリーブ(10)と、
第2管体(2)に接続されかつ第1スリーブ(10)を収容可能な開口を有した第2スリーブ(20)と、
を備えた管継手であって、
第1スリーブ(10)は、
第1外径(D11)を有した第1カラー(11)と、
第1カラー(11)より第1管体(1)側に配置され、かつ、第1管体(1)の外径(D1)及び第1外径(D11)より小さく、第1スリーブ(10)の外周上に溝部(12t)を形成させる第2外径(D12)を有した第2カラー(12)と、
第2カラー(12)の第2外径(D12)より大きい内径(d13)を有し、かつ、前記溝部(12t)の両壁(12tw)によって第1スリーブ(10)から脱落すること無く、外周方向に回転自在な第3カラー(13)と、
を備え、
第3カラー(13)は、径方向外側に突出した少なくとも1つの第1凸部(14)を備え、
第2スリーブ(20)は、
第1カラー(11)の第1外径(D11)と第3カラー(13)の第3外径(D13)より大きい内径(d20)を有し、開口端(23)より内側奥方に第1スリーブ(10)を案内する内周面(20i)と、
開口端(23)の一部に設けられ、第1凸部(14)を受け入れ、かつ、第1スリーブ(10)を第2スリーブ(20)の内側奥方にさらに案内可能な切欠き部(21)と、
前記切欠き部(21)に接続し、前記切欠き部(21)から第1凸部(14)を受け入れ、第2スリーブ(20)の内周方向に第1凸部(14)を回転自在に案内する第1凹部(22)と、
を備え、
第1凸部(14)が第1凹部(22)に案内された際に、前記切欠き部(21)及び第1凹部(22)の一部を塞ぐとともに、前記切欠き部(21)からの第1凸部(14)の脱落を防止する抜止め部材(30a,30b)が第2スリーブ(20)に着脱自在に取りつけられることを特徴とする管継手。 - 第2スリーブ(20)の前記切欠き部(21)付近の周面には第2凹部(24)が形成され、
前記抜止め部材(30a)は断面U字状を形成し、前記切欠き部(21)付近の第2スリーブ(20)の肉厚に対応する幅を有した溝(31)を有し、
該溝(31)の少なくとも1つの側面には、前記抜止め部材(30a)を前記切欠き部(21)に配置した際に、第2凹部(24)に係合可能な第2凸部(32)が設けられていることを特徴とする請求項1記載の管継手。 - 第2スリーブ(20)の前記切欠き部(21)付近の外周面には第2凹部(24)が形成され、
前記抜止め部材(30b)は断面L字状を形成し、該L字の一片(33)が第3カラー(13)の外周上に立設するように該一片(33)の一端が第3カラー(13)に接続し、かつ、該一片(33)の他端から該L字の他片(34)が第1カラー(11)側へ延びるように片持ち梁状に支持され、
第1スリーブ(10)と第2スリーブ(20)との組付けのために、第1凸部(14)が前記切欠き部(21)を通過させて第1凹部(22)に沿って内周方向に移動した後に、前記抜止め部材(30b)の周方向位置が前記切欠き部(21)の周方向位置に配置されるように、前記抜止め部材(30b)が第1凸部(14)に対して周方向に位相差を付けて第3カラー(13)の外周面に取り付けられており、
第3カラー(13)へ対面する前記他片(34)の内側面には、前記抜止め部材(30b)が前記切欠き部(21)に対応して配置された際に、第2凹部(24)に係合可能な第2凸部(32)が設けられていることを特徴とする請求項1記載の管継手。 - 第3カラー(13)には、第1凸部(14)の回転操作を助けるハンドル(15,33)が、第1凸部(14)よりも長手方向後方にかつ第1凸部14から離間して設けられていることを特徴とする請求項1~3のいずれかに記載の管継手。
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JP2018173186A (ja) * | 2017-03-31 | 2018-11-08 | 株式会社メトス | 煙突 |
US10285902B2 (en) | 2014-02-11 | 2019-05-14 | Koya, Inc. | Compression garment apparatus |
US11530867B2 (en) * | 2018-01-22 | 2022-12-20 | Qingdao Haier Co., Ltd. | Refrigerator, duct assembly and duct fixture |
US11672729B2 (en) | 2014-02-11 | 2023-06-13 | Koya Medical, Inc. | Compression garment |
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CN107532764B (zh) | 2019-05-03 |
RU2665748C1 (ru) | 2018-09-04 |
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