WO2011037267A1 - Joint de tuyau - Google Patents

Joint de tuyau Download PDF

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Publication number
WO2011037267A1
WO2011037267A1 PCT/JP2010/067012 JP2010067012W WO2011037267A1 WO 2011037267 A1 WO2011037267 A1 WO 2011037267A1 JP 2010067012 W JP2010067012 W JP 2010067012W WO 2011037267 A1 WO2011037267 A1 WO 2011037267A1
Authority
WO
WIPO (PCT)
Prior art keywords
hose
peripheral surface
sleeve
outer peripheral
elastic body
Prior art date
Application number
PCT/JP2010/067012
Other languages
English (en)
Japanese (ja)
Inventor
正 世良
Original Assignee
Sera Sho
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 Sera Sho filed Critical Sera Sho
Publication of WO2011037267A1 publication Critical patent/WO2011037267A1/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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
    • F16L33/223—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts the sealing surfaces being pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L33/224—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts the sealing surfaces being pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts a clamping ring being arranged between the threaded member and the connecting member

Definitions

  • the present invention provides a hose through which a fluid such as water or oil, a gas such as air, or a fluid passes, such as a hose joint used for connecting a pipe, particularly a heat resistant material which can pass even a high temperature fluid such as hot water. It relates to an excellent hose fitting.
  • a pressing sleeve having a tapered inner peripheral surface between a cylindrical nut receded by a screw formed on the outer periphery of the base of the nipple and an expansion sleeve positioned on the outer peripheral side of the hose
  • An elastic body made of a rubber flat packing is provided between the pressing sleeve and a flange formed on the inner circumferential tip of the cylindrical nut on the inner circumferential side of the cylindrical nut, and the axial direction of the cylindrical nut is rotated.
  • An object of the present invention is to address such a problem, and to maintain a clamped state of a hose for a long time without a shear stress acting on an elastic body, and an expansion and contraction sleeve by rotating a clamp.
  • the present invention provides a nipple into which a hose is inserted, and an expansion / contraction sleeve which is provided on the outer peripheral surface of the nipple with the hose interposed therebetween and is formed so as to be elastically deformable in the radial direction.
  • a fastener which is provided on the outside of the expansion sleeve and which is axially movably supported with respect to the expansion sleeve, and which is provided on the opposing surface of the expansion sleeve and the fastener, the expansion sleeve and the fastener
  • a sleeve diameter reducing means for reducing the diameter of the expansion sleeve by moving the sleeve in the axial direction and for bringing the inner peripheral surface of the hose into close contact with the outer peripheral surface of the nipple; and the inner peripheral surface of the expansion sleeve
  • An annular attachment portion is formed in a concave shape, and an annular elastic body is provided so as not to move in the axial direction and to protrude toward the outer peripheral surface of the hose, and the elastic body is formed of
  • the hose is arranged so as to be compressed and deformed in a radial direction with the outer peripheral surface of the hose by its diameter and to press the outer peripheral surface of the
  • the clamp is axially movably screwed on the nipple, and a pressing sleeve is rotatably provided on the inner periphery of the clamp, and the sleeve diameter reducing means includes the pressing It is characterized in that a configuration in which a tapered pressurized inner peripheral surface in sliding contact with the outer peripheral surface of the expansion and contraction sleeve is formed is added to the inner periphery of the sleeve. Furthermore, in addition to the above-described features, an annular recess is formed on the outer peripheral surface of the nipple in such a manner as to be opposed to the elastic body. Further, in addition to the above-mentioned features, it is characterized in that the surface of the elastic body is provided with a configuration in which a recessed groove portion into which the deformed portion is inserted as the elastic body is compressed and deformed.
  • the annular mounting portion is formed in a concave shape on the inner peripheral surface of the expansion and contraction sleeve so that the annular elastic body can not move in the axial direction and protrudes toward the outer peripheral surface of the hose.
  • the clamp is screwed on the nipple so as to be movable in the axial direction, and a pressure sleeve is rotatably provided on the inner periphery of the clamp, and the sleeve diameter reducing means is on the inner periphery of the pressure sleeve.
  • the pressure sleeve is maintained without rotation and the repulsive force of the elastic body regardless of the rotation operation of the fastener.
  • the expansion sleeve Since the expansion sleeve is pushed in the opposite direction in the axial direction, and the outer peripheral surface is in sliding contact along the tapered pressurizing inner peripheral surface of the pressing sleeve to reduce the diameter, the expansion sleeve is twisted by the rotation operation of the fastener.
  • the diameter can be reduced smoothly without being As a result, there is no sense of resistance in the rotation operation of the fastener, and the hose connection operation can be easily performed.
  • the hose when an annular recess is formed on the outer peripheral surface of the nipple so as to face the elastic body, the hose can be smoothly inserted into the outer peripheral surface of the nipple without resistance and the hose is Since it is pushed and bent toward the outer peripheral surface of the nipple and the inner peripheral surface is in close contact with the recess of the nipple, insertion of the hose into the nipple can be facilitated and the hose can be enhanced in strength while being reliably sealed. Further, when the recessed groove portion is formed on the surface of the elastic body, since the deformed portion enters the recessed groove portion when the elastic body is compressed and deformed, the amount of compressive deformation of the elastic body can be secured large. As a result, the creep resistance performance of the hose can be further improved.
  • FIG. 1 is a longitudinal front view showing an embodiment of a hose joint according to the present invention, wherein (a) shows a state before movement of a fastener and (b) shows a state after movement of the fastener (c ) Indicates when the hose is thin.
  • FIG. 2 is a perspective view, and (a) shows the whole disassembled state, and (b) is a perspective view in which only the expansion and contraction sleeve is viewed from the reverse direction.
  • FIG. 3 shows a preparation step before assembly, in which (a) is a longitudinal front view and (b) is a perspective view.
  • a clamp 3 provided on the outside of the expansion sleeve 2 and supported so as to be axially movable with respect to the expansion sleeve 2, and the opposing surfaces of the expansion sleeve 2 and the clamp 3
  • a sleeve diameter reducing means is provided which is provided on the surface and which reduces the diameter of the expansion sleeve 2 by the mutual movement of the expansion sleeve 2 and the fastener 3 in the axial direction.
  • the sleeve diameter reducing means is configured such that, after the connecting end of the hose H is inserted into the outer peripheral surface 1 a of the nipple 1, the axial movement of the expansion sleeve 2 and the fastener 3, that is, tightening with respect to the expansion sleeve 2
  • the expansion sleeve 2 is reduced in diameter by moving the tool 3 in the axial direction, for example, the insertion direction of the hose H (hereinafter referred to as the hose insertion direction), or the direction opposite to the hose insertion direction of the hose H
  • the expansion sleeve 2 is reduced in diameter by moving the expansion sleeve 2 in the opposite insertion direction in accordance with the drawing operation), whereby the inner peripheral surface H1 of the connection end of the hose H is nipple 1 It is in close contact with the outer peripheral surface 1a, and the hose H is connected so as not to be pulled out.
  • the elastic body 4 is provided immovably in the axial direction on the inner peripheral surface 2a of the sleeve 2 across them. .
  • the elastic body 4 compresses and deforms the elastic body 4 in a radial direction with the outer peripheral surface H 2 of the hose H as the diameter of the expansion and contraction sleeve 2 is reduced.
  • the outer peripheral surface H2 is arranged to be further pressed and deformed toward the outer peripheral surface 1a of the nipple 1 so that the inner peripheral surface H1 of the hose H is in close contact with the outer peripheral surface 1a of the nipple 1.
  • the nipple 1 is formed in a cylindrical shape having an outer diameter substantially the same as or slightly larger than the inner diameter of the hose H, for example, with a hard material such as a metal such as brass or hard synthetic resin Is formed into a cylindrical shape with a thin wall thickness by pressing or other forming a plate material made of a rigid material, and the proximal end side of the hose insertion direction is the proximal end of the expansion sleeve 2 in the hose insertion direction described later An opposing annular abutment surface 1b is formed.
  • the outer peripheral surface 1a of the nipple 1 it is preferable to form an annular recess 1c facing the elastic body 4 described later.
  • the open end 1d located at the end of the nipple outer peripheral surface 1a in the opposite direction to the insertion direction is inclined in a tapered shape gradually increasing in diameter toward the opposite direction, and the opposite outer peripheral surface in the hose insertion direction
  • the slide means 1e is provided to support the clamp 3 to be described later in a reciprocating manner in the hose insertion direction and the counter insertion direction.
  • the expansion / contraction sleeve 2 is made of, for example, an elastically deformable material such as polyacetal resin or other synthetic resin having excellent surface slipperiness and heat resistance, and the inside diameter is formed in a substantially cylindrical shape slightly larger than the outside diameter of the hose H
  • the inner peripheral surface 2a is substantially parallel to the outer peripheral surface 1a of the nipple 1, and as shown in FIGS. 2 (a) and 2 (b), the slit 2b extending in either or both the hose insertion direction and the anti-insertion direction
  • a mounting portion 2 c for positioning an elastic body 4 described later in the axial direction on the tip side of the inner peripheral surface 2 a of the expansion / contraction sleeve 2 opposite to the insertion direction faces the annular recess 1 c of the outer peripheral surface 1 a of the nipple 1. It is also possible to provide a plurality of mounting portions 2c in the hose insertion direction, if necessary.
  • the fastener 3 is formed of a material similar to the nipple 1 in a substantially cylindrical shape having an inner diameter larger than the outer diameter of the hose H, and the inner peripheral surface thereof is engaged with the proximal outer surface of the nipple 1 in the hose insertion direction.
  • slide means 3a is provided for supporting reciprocably in the hose insertion direction and the counter insertion direction.
  • non-slip means 3b for rotation operation for example, a plurality of flat portions engaged with a tool etc. may be formed on the outer peripheral surface of the fastener 3 in the circumferential direction as needed in the illustrated example. It is preferable to form the uneven portion of On the opposing surfaces of the clamp 3 and the expansion sleeve 2, from the inner peripheral surface of the clamp 3 to the outer peripheral surface 2d of the expansion sleeve 2, the expansion / contraction sleeve 2 and the clamp 3 move in the axial direction.
  • a sleeve diameter reducing means is provided to press the sleeve 2 radially to reduce the diameter.
  • the sleeve diameter reducing means either or both of the inner peripheral surface of the fastener 3 and the outer peripheral surface 2d of the expansion and contraction sleeve 2 opposed to each other and abutted against each other gradually decrease in inner diameter toward the opposite insertion direction. It is formed by being inclined in a tapered shape. Further, as another example of the sleeve diameter reducing means, as shown in FIGS. 1 to 3, the pressing sleeve 5 is rotatably provided on the inner periphery of the fastener 3, and the expanding sleeve 2 is provided on the inner peripheral surface of the pressing sleeve 5.
  • the elastic body 4 is formed in an annular shape, for example, of a compressible material such as rubber, and the outer peripheral portion thereof is fitted to the attachment portion 2 c formed on the inner peripheral surface 2 a of the expansion and contraction sleeve 2
  • the inner peripheral surface 4a of the elastic body 4 is positioned so as to project toward the outer peripheral surface H2 of the hose H. Furthermore, as shown in FIG.
  • the elastic body 4 has its inner peripheral surface 4a curved in a substantially arc shape in cross section, and the elastic body 4 is compressed and deformed on the surface of the elastic body 4. It is preferable to form the concave groove 4b into which the bulging and deformed part enters.
  • the hose H is made of, for example, a soft synthetic resin such as vinyl chloride or a soft material such as silicone rubber, and it is preferable that the inner peripheral surface H1 and the outer peripheral surface H2 be flat.
  • a specific example thereof is a laminated hose in which a plurality or a single synthetic resin blade (reinforcing yarn) is spirally embedded as an intermediate layer between the transparent or opaque outer layer and the inner layer, or an intermediate layer
  • a braided reinforced hose in which a material is braided on the outer peripheral surface of a hose, a spiral reinforced hose in which a metal wire or a hard synthetic resin wire is embedded in a spiral shape, a flexible synthetic resin hose having a single layer structure, or the like is used.
  • an embodiment of the present invention will be described based on the drawings.
  • an external thread portion is used as slide means 1e on the outer peripheral surface of the nipple 1.
  • the inner screw portion is engraved as the slide means 3a of the inner peripheral surface of the clamp 3 facing the same, and the outer screw portion 1e and the inner screw portion 3a are screwed together to rotate the clamp 3
  • the clamp 3 and the pressing sleeve 5 are attached to the nipple 1 so as to be capable of reciprocating in the axial direction, and a pipe connection port of another device is provided on the proximal end side of the external thread 1e of the nipple 1 in the hose insertion direction.
  • connection part 1f for connecting to (not shown) is provided in a row is shown.
  • the base outer peripheral portion of the nipple 1 on which the external screw portion 1 e is to be engraved and the nipple outer peripheral surface 1 a are formed in a concave shape, and the bottom portion thereof is used as the abutting surface 1 b of the nipple 1.
  • a collar 2 f is formed which protrudes toward the outer peripheral surface 1 a of the nipple 1.
  • a flange portion 3 c protruding toward the outer peripheral surface H 2 of the hose H is formed at the end in the opposite direction to the insertion direction of the fastener 3, and the outer peripheral surface of the pressing sleeve 5 disposed on the inner periphery of the fastener 3
  • the pressing sleeve 5 is moved in the same manner as the clamp 3 is rotationally moved in the hose insertion direction. I try to interlock in the direction.
  • a plurality of concave grooves 4b are appropriately recessed in the circumferential direction at appropriate intervals to smooth the entire elastic body 4 in the radial direction It is elastically deformed.
  • the connection portion 1f is formed with an outer thread corresponding thereto, and When an external screw is engraved on the outer peripheral surface of the pipe connection port, an internal screw corresponding to this is engraved.
  • the nipple 1 is a cut product obtained by scraping a cylindrical material by, for example, cutting processing, and an external thread is cut at the proximal end in the hose insertion direction as a connection portion 1f.
  • the hose H is inserted into the clamp 3 and the pressing sleeve 5, and the cut surface H3 of the hose H
  • the flange portion 2f of the hose insertion direction proximal end 2e of the expansion and contraction sleeve 2 abuts against the outer peripheral surface H2 of the hose H and is fitted into the attachment portion 2c of the inner peripheral surface 2a of the expansion and contraction sleeve 2
  • the pressure sleeve 5 is temporarily fixed by bringing the inner peripheral surface 4 a of the elastic body 4 into contact with the elastic sleeve 4. Thereafter, as shown in FIG. 1A, the connection end of the hose H is inserted into the outer peripheral surface 1a of the nipple 1.
  • the clamp 3 is rotated to screw the inner screw 3 a to the outer screw 1 e of the nipple 1.
  • the pressing sleeve 5 is moved in the same direction via the flange portion 3c of the fastener 3.
  • the tapered pressing inner circumferential surface 5a contacts the tip outer circumferential surface 2d of the expansion and contraction sleeve 2 to press the expansion and contraction sleeve 2 in the radial direction.
  • the tip outer peripheral surface 2d of the expansion and contraction sleeve 2 is radially pressurized by the tapered pressurizing inner peripheral surface 5a of the pressing sleeve 5 so as to be compressed and deformed, and positioned along the tip inner periphery of the expansion sleeve 2
  • the inner peripheral surface 4a of the elastic body 4 is in pressure contact with the outer peripheral surface H2 of the hose H, and the inner peripheral surface H1 of the hose is closely attached to the annular recess 1c of the outer peripheral surface 1a of the nipple 1 and clamped. Compress and deform in the radial direction.
  • the outer screw portion and the inner screw portion screwing each other are formed as the slide means 1e and 3a for moving the clamp 3 in the axial direction with respect to the nipple 1, it is not limited thereto. As long as the fastener 3 can be moved in the axial direction with respect to the sleeve 2, a structure other than a screw may be used.
  • the hose H is pulled out in the opposite direction to insert the expansion sleeve 2 along with the inner peripheral surface of the fastener 3 or the pressing sleeve It may be made to move along the pressurizing inner circumferential surface 5a of 5 in the opposite direction to be reduced in diameter.
  • the flange portion 2f formed to project from the proximal end 2e of the expansion sleeve 2 in the hose insertion direction is disposed so as to be sandwiched between the butting surface 1b of the nipple 1 and the cut surface H3 of the hose H Not shown, the cut surface H3 of the hose H is brought into direct contact with the abutment surface 1b of the nipple 1 without forming the flange 2f, and the expansion / contraction sleeve 2 is formed between the outside and the clamp 3. It may be arranged so as not to move.
  • a Hose joint 1 Nipple 1a Outer peripheral surface 1b Butt end surface 1c Recess 1d Opening end 1e Slide means (outer thread) 1f Connection part 2 Expansion sleeve 2a Inner peripheral surface 2b Split 2c Mounting part 2d Outer peripheral surface 2e Base end 2f ⁇ Part 3 Fastening tool 3a Slide means (inner screw part) 3b Non-slip means 3c Flange part 4 Elastic body 4a Inner peripheral surface 4b Recess groove part 5 Press sleeve 5a Pressurized inner peripheral surface (sleeve diameter reducing means) 5b Locking step H Hose H1 inner circumferential surface H2 outer circumferential surface H3 cut surface H4 pinched part

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)

Abstract

La présente invention concerne un joint de tuyau permettant de maintenir le serrage d'un tuyau pendant une longue durée sans appliquer de contrainte de cisaillement sur un corps élastique. Une partie fixation annulaire (2c) est formée de manière évidée sur la surface périphérique interne (2a) d'un manchon extensible (2) et un corps élastique annulaire (4) est prévu de façon à ne pas se déplacer dans le sens axial mais à faire saillie vers la surface périphérique externe (H2) d'un tuyau (H). Le corps élastique (4) est déformé par compression dans les directions radiales suivant une diminution du diamètre du manchon extensible (2) entre le manchon extensible (2) et la surface périphérique externe (H2) du tuyau (H), et la force de répulsion du corps élastique (4) pousse la surface périphérique (H2) du tuyau (H) vers la surface périphérique externe (1a) d'un mamelon (1). Ainsi, même si la force élastique et l'épaisseur du tuyau (H) sont réduites en raison d'une utilisation de longue durée, etc., la surface périphérique interne (4a) du corps élastique (4) est projetée par la force de répulsion du corps élastique (4) en fonction de cette réduction et, par conséquent, la surface périphérique interne (H1) du tuyau (H) est mise en contact étroit avec la surface périphérique externe (1a) du mamelon (1). Ainsi, le serrage du tuyau (H) est toujours maintenu.
PCT/JP2010/067012 2009-09-25 2010-09-22 Joint de tuyau WO2011037267A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-240840 2009-09-25
JP2009240840A JP2011069484A (ja) 2009-09-25 2009-09-25 ホース継手

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Publication Number Publication Date
WO2011037267A1 true WO2011037267A1 (fr) 2011-03-31

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WO (1) WO2011037267A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105593592A (zh) * 2013-08-30 2016-05-18 东洋克斯株式会社 管接头
US10006570B2 (en) 2013-07-05 2018-06-26 Junkosha Inc. Pipe joint

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5799326B2 (ja) * 2013-08-30 2015-10-21 株式会社トヨックス 管継手
JP5849261B2 (ja) * 2013-08-30 2016-01-27 株式会社トヨックス 管継手

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002250490A (ja) * 2001-02-20 2002-09-06 Motonori Ooi 柔軟樹脂管メカニカル継手
JP2007333176A (ja) * 2006-06-19 2007-12-27 Nippon Flex Kk ホース接続用のコネクタ
JP2009036239A (ja) * 2007-07-31 2009-02-19 Nippon Flex Kk ホース接続用のコネクタ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0198995A (ja) * 1987-10-13 1989-04-17 Hitachi Ltd 制御棒引抜監視方法、及び同監視装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002250490A (ja) * 2001-02-20 2002-09-06 Motonori Ooi 柔軟樹脂管メカニカル継手
JP2007333176A (ja) * 2006-06-19 2007-12-27 Nippon Flex Kk ホース接続用のコネクタ
JP2009036239A (ja) * 2007-07-31 2009-02-19 Nippon Flex Kk ホース接続用のコネクタ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10006570B2 (en) 2013-07-05 2018-06-26 Junkosha Inc. Pipe joint
CN105593592A (zh) * 2013-08-30 2016-05-18 东洋克斯株式会社 管接头

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