WO2022202118A1 - Joint de tuyau - Google Patents

Joint de tuyau Download PDF

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Publication number
WO2022202118A1
WO2022202118A1 PCT/JP2022/008179 JP2022008179W WO2022202118A1 WO 2022202118 A1 WO2022202118 A1 WO 2022202118A1 JP 2022008179 W JP2022008179 W JP 2022008179W WO 2022202118 A1 WO2022202118 A1 WO 2022202118A1
Authority
WO
WIPO (PCT)
Prior art keywords
joint
joint body
joint member
peripheral surface
sleeve
Prior art date
Application number
PCT/JP2022/008179
Other languages
English (en)
Japanese (ja)
Inventor
貴俊 植松
Original Assignee
日東工器株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日東工器株式会社 filed Critical 日東工器株式会社
Priority to JP2023508850A priority Critical patent/JPWO2022202118A1/ja
Publication of WO2022202118A1 publication Critical patent/WO2022202118A1/fr

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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
    • F16L37/22—Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts
    • F16L37/23—Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts by means of balls

Definitions

  • the present invention relates to a pipe joint consisting of two joint members that are detachably connected to each other.
  • a pipe joint consisting of a female joint member and a male joint member is normally locked together in the direction of the longitudinal axis by a locking piece or the like with the tip of the male joint member inserted into the passage of the female joint member. It is designed to be connected by being fixed to.
  • the inclination between the joint members is suppressed to some extent mainly by the radial engagement between the inner peripheral surface of the female joint member and the outer peripheral surface of the male joint member.
  • the entire pipe joint is made of a highly rigid metal material, etc., and the inner and outer peripheral surfaces are formed with high precision, the engagement between the inner and outer peripheral surfaces is sufficient to prevent inclination. can be suppressed.
  • the entire pipe joint is made of a resin material with relatively low rigidity or if it is not manufactured with such high precision, depending on the cost and intended use, bending stress acts between the joint members. Sometimes large tilts and bends occur between the joint members. If such a large inclination or bend occurs, there is a risk that the sealing performance between the joint members will deteriorate or the joint members will be damaged.
  • the present invention provides a pipe joint capable of suppressing bending between two joint members that are mutually connected when a force acts on the two joint members so as to bend each other. intended to
  • the present invention A pipe joint comprising first and second joint members detachably connected to each other,
  • the first joint member A first coupling body defining a first passageway extending rearwardly from a front end opening, an inner tubular portion defining a forward portion of the first passageway, and a first fitting body positioned radially outwardly spaced from the inner tubular portion.
  • a first joint body having an outer cylindrical portion that forms an annular space that opens forward between itself and the inner cylindrical portion; with The second joint member a second joint body defining a second passageway extending rearwardly from the front end opening; A tubular sleeve disposed on the outer peripheral surface of the second joint body so as to be displaceable in the direction of the longitudinal axis of the second joint body, the sleeve being inclined radially outward toward the rear of the second joint body.
  • the inclined outer peripheral surface and the inclined inner peripheral surface of the sleeve are formed into the outer cylindrical portion and the inclined inner peripheral surface, respectively. Being pressed against the inner tubular portion, the sleeve can engage the first joint body in more locations to resist bending. This makes it possible to more effectively prevent the first joint member and the second joint member from being mutually bent in the connected state.
  • the inclined outer peripheral surface of the outer cylinder may be in line contact and pressed against the inner corners of the front end of the tubular portion, and the inclined inner peripheral surface may be in line contact and pressed against the outer corners of the front end of the inner cylindrical portion.
  • the sleeve is made of a relatively soft material such as resin
  • each corner may portion bites into the inclined outer peripheral surface and the inclined inner peripheral surface. This makes it difficult for the sleeve to slip with respect to the first joint body, making it possible to more effectively suppress bending.
  • the first joint member further comprises a lock piece holding hole formed in the inner cylindrical portion, and a lock piece held in the lock piece holding hole so as to be displaceable in the radial direction of the first joint body.
  • the second joint member further comprises an annular locking groove extending circumferentially on the outer peripheral surface of the second joint body, In the connected state, the sleeve presses the lock member from the radially outer side so that the lock member can be maintained in a state of being engaged with the annular locking groove.
  • the first joint body has an inner joint body that constitutes the inner cylindrical portion and an outer joint body that constitutes the outer cylindrical portion, and the inner joint body and the outer joint body are It can be fixed to each other by a snap fit.
  • FIG. 1 is a cross-sectional view of a pipe joint in an unconnected state according to an embodiment of the present invention
  • FIG. FIG. 2 is a cross-sectional view of the pipe joint of FIG. 1 in a connected state;
  • a pipe joint 1 includes a female joint member (first joint member) 10 and a male joint member (second joint member) that are detachably connected to each other. joint member) 12.
  • the female joint member 10 has a female joint body (first joint body) defining a female side passage (first passage) 18 extending rearward (to the left in the drawing) from the front end opening 14 to the rear end opening 16. 20 and a valve member 22 disposed within the female passageway 18 .
  • the female fitting body 20 includes an outer joint body 24 , an inner joint body 26 mounted inside the outer joint body 24 , and a longitudinal joint body 26 between the outer joint body 24 and the inner joint body 26 inside the outer joint body 24 . and a central joint body 28 sandwiched and fixed in the direction of the axis L.
  • An inner joint body 26 defines a forward portion of the female passageway 18
  • a central joint body 28 defines a central portion of the female passageway 18
  • an outer joint body 24 defines a rearward portion of the female passageway 18 .
  • a locking hole 30 is formed in the outer joint body 24, and a locking projection 32 is formed in the inner joint body 26. The locking hole 30 and the locking projection 32 are snap-fitted together to form the outer joint body 24.
  • the inner joint main body 26 is fixed to each other.
  • the female joint body 20 includes an inner tubular portion 34 that is part of the inner joint body 26 and an outer tubular portion that is part of the outer joint body 24 and is positioned radially outwardly away from the inner tubular portion 34 . 36.
  • the inner tubular portion 34 and the outer tubular portion 36 form an annular space 38 that opens forward.
  • a lock piece holding hole 40 is formed through the inner tubular portion 34 in the radial direction, and a lock piece 42 is held in the lock piece holding hole 40 so as to be radially displaceable.
  • the inner joint main body 26, the outer joint main body 24, and the central joint main body 28 of the female joint main body 20 are formed of a resin material.
  • the male joint member 12 has a male joint body (second joint body) defining a male side passage (second passage) 48 extending rearward (to the right in the drawing) from the front end opening 44 to the rear end opening 46 .
  • a male joint body (second joint body) defining a male side passage (second passage) 48 extending rearward (to the right in the drawing) from the front end opening 44 to the rear end opening 46 .
  • 50 a cylindrical sleeve 52 disposed displaceably on the outer peripheral surface 50a of the male joint body 50 in the direction of the longitudinal axis L of the male joint body 50, and between the male joint body 50 and the sleeve 52. and a spring 54 disposed on the sleeve 52 to bias the sleeve 52 forward.
  • the male fitting body 50 consists of a front fitting body 56, a rear fitting body 58, and a center fitting body 60 held therebetween.
  • a locking projection 62 is formed in the front joint body 56, and a locking hole 64 is formed in the rear joint body 58. By snap-fitting the locking projection 62 and the locking hole 64, the front joint body 56 and the locking hole 64 are formed.
  • the rear joint main body 58 is fixed to each other.
  • Male fitting member 12 further includes a valve member 66 disposed within male passageway 48 .
  • An annular locking groove 68 extending in the circumferential direction is formed on the outer peripheral surface 50 a of the male joint body 50 .
  • a side surface on the front side of the annular locking groove 68 is an arc-shaped surface corresponding to the spherical locking element 42 .
  • the sleeve 52 has a front end portion 70 projecting forward at a position radially spaced apart from the outer peripheral surface 50 a of the male joint body 50 .
  • a distal end portion 70 of the sleeve 52 is formed with an inclined outer peripheral surface 70a inclined radially outward toward the rear and an inclined inner peripheral surface 70b inclined radially inward toward the rear.
  • the male joint body 50 and the sleeve 52 are made of a resin material.
  • the female joint member 10 and the male joint member 12 are connected as shown in FIG. be.
  • the male joint body 50 is inserted into the female side passage 18 of the female joint body 20 from the front end opening 14 thereof, the locking element 42 and the annular engaging groove 68 are radially aligned.
  • the tip portion 70 of the sleeve 52 biased by the spring 54 presses the locking piece 42 from the radially outer side, and the locking piece 42 is maintained in a state of being engaged with the annular locking groove 68 .
  • the tip portion 70 of the sleeve 52 is inserted into the annular space 38 of the female joint body 20 and engaged with the male joint member 12 .
  • the inclined outer peripheral surface 70a of the sleeve 52 is in line contact with the inner corner portion 72 at the front end of the outer tubular portion 36
  • the inclined inner peripheral surface 70b is in line contact with the outer corner portion at the front end of the inner tubular portion 34.
  • 74 are positioned close to each other without contact.
  • the outer joint main body 24 forming the outer tubular portion 36 and the inner joint main body 26 forming the inner tubular portion 34 are formed as separate members, and are fixed to each other by snap fitting.
  • the outer joint body 24 and the inner joint body 26 may cause the inclined inner peripheral surface 70b of the sleeve 52 to come into contact with the outer corner portion 74 of the inner cylindrical portion 34. obtain.
  • the angled inner peripheral surface 70b of the sleeve 52 makes line contact with the outer corner 74 of the inner tubular portion 34 and the angled outer peripheral surface 70a does not contact the inner corner 72 of the outer tubular portion 36. can also be positioned close to .
  • the distal end portion 70 is displaced in the lower left direction so that the inclined outer peripheral surface 70a is further pressed against the inner corner portion 72 of the outer cylindrical portion 36, and the upper position as seen in the drawing. Then, the tip portion 70 is displaced in the lower right direction so that the inclined inner peripheral surface 70b is in line contact with the outer corner portion 74 of the inner cylindrical portion 34 and pressed.
  • the distal end portion 70 of the sleeve 52 is displaced upward and to the right at the lower position of the sleeve 52 as seen in the drawing, and the inclined inner peripheral surface 70b is formed. is pressed against the outer corner portion 74 of the inner cylindrical portion 34 in line contact with the outer corner portion 74 of the inner cylindrical portion 34, and at the upper position in the drawing, the tip portion 70 is displaced in the upper left direction so that the inclined outer peripheral surface 70a contacts the inner corner portion of the outer cylindrical portion 36.
  • the portion 72 can be pressed more strongly.
  • the female joint member 10 and the male joint member 12 are made of a resin material as a whole.
  • 36 and the outer corner portion 74 of the inner tubular portion 34 are in line contact with each other and strongly pressed, the inner corner portion 72 and the outer corner portion 74 are formed on the inclined outer peripheral surface 70a and the inclined inner peripheral surface 70b, respectively. slightly bites into This makes it difficult for the sleeve 52 to slip relative to the female joint body 20, so that bending can be suppressed more effectively.
  • the inclined outer peripheral surface 70a of the sleeve 52 presses against the outer tubular portion 36 and the inclined inner peripheral surface 70 b of the sleeve 52 presses against the inner tubular portion 34 . Since both the inclined outer peripheral surface 70a and the inclined inner peripheral surface 70b of the sleeve 52 are compressed, the sleeve 52 can engage the female coupling body 20 at more positions to resist bending forces. This makes it possible to more effectively prevent the female joint member 10 and the male joint member 12 from being mutually bent in the connected state.
  • each joint member is made of a resin material, which is generally less rigid than a metal material, and is composed of a plurality of parts, it tends to bend relatively greatly when a force is applied in the connected state.
  • a resin material which is generally less rigid than a metal material, and is composed of a plurality of parts
  • a sleeve may be provided on the female coupling member and an inner tubular portion and an outer tubular portion defining an annular space may be provided on the male coupling member.
  • the female joint main body and the male joint member may be configured as an integral member, or may be made of, for example, a metal material other than resin.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un joint de tuyau dans lequel la flexion entre deux éléments joints accouplés est supprimée lorsqu'une force qui plie mutuellement les deux éléments joints est appliquée. Dans la solution selon la présente invention, un corps de joint de type femelle (20) d'un élément joint de type femelle (10) comprend une partie tube interne (34) et une partie tube externe (36), qui forme, conjointement avec la partie tube interne (34), un espace annulaire (38) qui est ouvert vers le côté avant. Un élément joint de type mâle (12) comprend un manchon (52) disposé sur une surface circonférentielle externe (50a) d'un corps de joint de type mâle (50). Le manchon (52) comprend une surface circonférentielle externe inclinée (70a) et une surface circonférentielle interne inclinée (70b). Lorsque le raccord de tuyau (1) est soumis à une force qui plie mutuellement l'élément joint de type femelle (10) et l'élément joint de type mâle (12) dans un état accouplé par rapport à l'axe longitudinal (L), la surface circonférentielle externe inclinée (70a) du manchon (52) est pressée contre la partie tube externe (36), et la surface circonférentielle interne inclinée (70b) est pressée contre la partie tube interne (34). Par conséquent, la flexion mutuelle de l'élément joint de type femelle (10) et de l'élément joint de type mâle (12) est empêchée.
PCT/JP2022/008179 2021-03-26 2022-02-28 Joint de tuyau WO2022202118A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023508850A JPWO2022202118A1 (fr) 2021-03-26 2022-02-28

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021053648 2021-03-26
JP2021-053648 2021-03-26

Publications (1)

Publication Number Publication Date
WO2022202118A1 true WO2022202118A1 (fr) 2022-09-29

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ID=83395573

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/008179 WO2022202118A1 (fr) 2021-03-26 2022-02-28 Joint de tuyau

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JP (1) JPWO2022202118A1 (fr)
WO (1) WO2022202118A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56127881A (en) * 1980-03-12 1981-10-06 Kubota Ltd Socket of plastic pipe
US5211197A (en) * 1992-01-03 1993-05-18 Aeroquip Corporation Quick disconnect liquid line coupling with volumertric expansion couping element
JP2001355779A (ja) * 2000-06-12 2001-12-26 Surpass Kogyo Kk 接続器具
WO2009041630A1 (fr) * 2007-09-27 2009-04-02 Nitto Kohki Co., Ltd. Raccord de tuyau et élément de raccord de tuyau du type femelle
JP2009110758A (ja) * 2007-10-29 2009-05-21 Toshiba Corp 燃料電池用カップラーおよび燃料電池
JP2012047256A (ja) * 2010-08-26 2012-03-08 Tominaga Oil Pump Mfg Co Ltd 給油装置の緊急遮断装置
CN104061383A (zh) * 2014-07-16 2014-09-24 玉环县大众气动工具有限公司 一种暖气阀中阀体和接头的连接结构

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56127881A (en) * 1980-03-12 1981-10-06 Kubota Ltd Socket of plastic pipe
US5211197A (en) * 1992-01-03 1993-05-18 Aeroquip Corporation Quick disconnect liquid line coupling with volumertric expansion couping element
JP2001355779A (ja) * 2000-06-12 2001-12-26 Surpass Kogyo Kk 接続器具
WO2009041630A1 (fr) * 2007-09-27 2009-04-02 Nitto Kohki Co., Ltd. Raccord de tuyau et élément de raccord de tuyau du type femelle
JP2009110758A (ja) * 2007-10-29 2009-05-21 Toshiba Corp 燃料電池用カップラーおよび燃料電池
JP2012047256A (ja) * 2010-08-26 2012-03-08 Tominaga Oil Pump Mfg Co Ltd 給油装置の緊急遮断装置
CN104061383A (zh) * 2014-07-16 2014-09-24 玉环县大众气动工具有限公司 一种暖气阀中阀体和接头的连接结构

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Publication number Publication date
JPWO2022202118A1 (fr) 2022-09-29

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