WO2016088831A1 - Raccord de tuyau et structure de raccordement de tuyau de douche - Google Patents

Raccord de tuyau et structure de raccordement de tuyau de douche Download PDF

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Publication number
WO2016088831A1
WO2016088831A1 PCT/JP2015/084001 JP2015084001W WO2016088831A1 WO 2016088831 A1 WO2016088831 A1 WO 2016088831A1 JP 2015084001 W JP2015084001 W JP 2015084001W WO 2016088831 A1 WO2016088831 A1 WO 2016088831A1
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WO
WIPO (PCT)
Prior art keywords
pipe
nipple
diameter
flexible tube
caulking
Prior art date
Application number
PCT/JP2015/084001
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English (en)
Japanese (ja)
Inventor
藤森　裕司
Original Assignee
株式会社トヨックス
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 株式会社トヨックス filed Critical 株式会社トヨックス
Priority to CN201580065498.2A priority Critical patent/CN107002924B/zh
Publication of WO2016088831A1 publication Critical patent/WO2016088831A1/fr

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    • 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
    • F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
    • F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
    • 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

Definitions

  • the present invention relates to a pipe joint used for connecting a flexible pipe such as a hose or a tube to a nipple by tightening a caulking pipe, and a shower hose as a flexible pipe by the pipe joint, and a water discharge device such as a shower head.
  • the present invention relates to a shower hose connection structure used for connecting to a water supply fitting such as a hot-water mixing tap or a water tap.
  • this type of pipe joint and shower hose connection structure uses an insert pipe that is relatively thin and has a smooth outer peripheral surface as a nipple that contacts the inner surface of the flexible pipe (for example, Patent Document 1). And a nipple that is relatively thick and has a bamboo shoot-like portion integrally formed on the outer peripheral surface (see, for example, Patent Document 2).
  • Patent Document 1 The one described in Patent Document 1 is integrated by inserting and inserting the insert pipe inside the inner cylinder part, and a step is formed by disposing the end of the inner cylinder part at an intermediate position in the axial direction of the insert pipe, In a state where a hose is fitted between the inner cylinder part and the insert pipe and the outer cylinder part, the axially intermediate part of the outer cylinder part facing the step is caulked to partially reduce the diameter. .
  • a hose is inserted into a presser tube, a bamboo child-like portion of a nipple is inserted into the inner periphery of the hose, and the presser tube is forcibly moved to the outer periphery of the hose. By doing so, the presser cylinder is inserted into the bamboo child-like portion of the nipple with the hose interposed therebetween.
  • the pipe joint using the insert pipe having a smooth outer peripheral surface described in Patent Document 1 is more flexible than the pipe joint using the nipple having the outer peripheral surface described in Patent Document 2.
  • the frictional resistance against the surface is reduced.
  • an insert pipe with a smooth outer peripheral surface is formed by sheet metal processing by a press machine, etc., and an outer peripheral surface is formed by cutting a bamboo nipple-like nipple. This is because it is unsuitable to perform uneven processing that requires a wall thickness such as a bamboo shoot shape on the outer peripheral surface of the insert pipe that comes into contact with the pipe.
  • the smooth insert pipe tends to be inferior in the pull-out strength of the flexible tube.
  • a flexible tube such as a shower hose has a shorter product life than a water supply fitting with long-term use, and the flexible tube may be replaced because it tends to cause appearance deterioration or damage due to mold or the like.
  • a pipe joint according to the present invention is a pipe joint in which a flexible pipe is inserted between a nipple and a caulking pipe, and the flexible pipe is connected to the nipple by a diameter reduction deformation of the caulking pipe.
  • the nipple formed into a cylindrical shape by sheet metal processing, and the caulking pipe provided on the outside of the nipple so as to face the radial direction across the insertion space of the flexible tube, A narrow-diameter portion smaller than the inner diameter of the flexible tube, an engagement recess formed on the outside of the narrow-diameter portion so as to face the reduced diameter deformation portion of the caulking pipe, and the engagement recess And a retaining step portion formed so as to protrude adjacent to the direction in which the flexible tube is removed, and a flow passage restricting portion formed so as to protrude toward the flow passage space inside the small diameter portion. It is characterized by having.
  • the flexible tube 1 is inserted between the nipple 2 and the caulking pipe 3, and the caulking pipe 3 is reduced in diameter toward the flexible tube 1.
  • the flexible tube 1 is connected to the nipple 2 and the caulking pipe 3 to integrate these three components.
  • the pipe joint A according to the embodiment of the present invention is diametrically opposed with the nipple 2 formed in a cylindrical shape by sheet metal processing and the insertion space S of the flexible pipe 1 outside the nipple 2.
  • the caulking pipe 3 provided as described above is provided as a main component.
  • the insertion direction N of the flexible tube 1 with respect to the insertion space S is hereinafter referred to as “tube insertion direction N”, and the removal direction U of the flexible tube 1 opposite to the tube insertion direction N is hereinafter referred to as “tube removal direction U”. That's it.
  • the flexible tube 1 is, for example, a flexible hose or tube formed of a deformable soft material such as soft synthetic resin or rubber, and the distal end surface 1a and the connecting end 1b at one or both ends thereof are inserted. It is inserted into the space S. Further, as the flexible tube 1, it is preferable to use at least the inner surface 1c and the outer surface 1d of the connection end portion 1b, or the inner surface 1c and the outer surface 1d of the entire tube being smooth. As a specific example of the flexible tube 1, in the case shown in FIGS. 1 (a), 1 (b) to 5 (a), (b), an inner layer portion 1e and an outer layer formed into a cylindrical shape from a transparent or opaque material.
  • a plurality or a single reinforcing wire 1g is wound in a spiral shape or a net shape between the portions 1f. Thereby, the thing which was excellent in shape retention property and pressure
  • the reinforcing wire 1g a multifilament obtained by twisting a plurality of thin synthetic resin fibers, a monofilament (monofilament) made of a single synthetic resin fiber, a flat yarn made of a tape-like synthetic resin fiber ( Or tape yarn).
  • an adhesive layer is provided between the inner layer portion 1e, the outer layer portion 1f, and the reinforcing wire 1g, or is adjusted to the fluid passing through the flexible tube 1 inside the inner layer portion 1e as necessary. It is also possible to provide or change the innermost layer portion made of a material, or to provide or change the outermost layer made of a protective material outside the outer layer portion 1f.
  • a reinforcing wire such as a synthetic resin or metal cross-sectional rectangle and a reinforcing wire such as a circular cross-section are spirally wound and integrated as an intermediate layer, or a reinforcing wire such as glass fiber or flame retardant fiber is braided.
  • a reinforcing wire made of metal or hard synthetic resin can be embedded in a spiral shape, or a soft synthetic resin tube having a single layer structure can be used.
  • the nipple 2 is formed in a substantially cylindrical shape by subjecting a rigid material such as stainless steel or aluminum to sheet metal processing.
  • Sheet metal processing refers to plastic processing in which a sheet metal is deformed and pressed into a desired three-dimensional shape by inserting and pressing a thin sheet metal between molds such as a press machine.
  • the nipple 2 that has been subjected to sheet metal processing has a strength that is not restored and deformed by a diameter-reducing deformation process of a caulking pipe 3 to be described later and a repulsive force from the flexible tube 1 associated therewith.
  • the nipple 2 has a narrow diameter portion 2a formed to be smaller in diameter than the inner diameter of the flexible tube 1, and a crimping pipe 3 which will be described later by being bent deeper in the tube insertion direction N than the small diameter portion 2a.
  • the retaining recess 2c and a retaining step 2d that protrudes so as to be adjacent to each other in the tube withdrawal direction U are included as main components.
  • the small-diameter portion 2a is formed by partially reducing the diameter of a diametrically deformed portion 3b of the caulking pipe 3 described later on the outer circumferential surface of the nipple 2 by sheet metal processing.
  • 2 is formed in an annular shape having a predetermined width in the axial direction.
  • On the outside of the small diameter portion 2a there is an engagement recess 2c that is formed in a reduced diameter in the radial direction so as to be opposed to the inner surface 1c of the flexible tube 1 inserted into the insertion space S across the gap in the radial direction.
  • a stopper step 2d that is formed to expand in the radial direction is formed at the end in the tube disconnecting direction U, respectively.
  • the engaging recess 2c is configured such that the material 1m of the flexible tube 1 that flows along with the deformation of the caulking pipe 3 to be described later enters the engaging recess 2c.
  • the retaining step 2d is configured such that the material 1m of the flexible tube 1 that has flowed into the engaging recess 2c due to the diameter reduction deformation of the caulking pipe 3, which will be described later, abuts in the tube withdrawal direction U and engages with each other. Yes.
  • the nipple 2 includes an annular convex portion 2e formed to project in the tube withdrawal direction U from the retaining step portion 2d, and a cylindrical portion 2f having a smaller diameter than the annular convex portion 2e and substantially the same as the inner diameter of the flexible tube 1. And a tapered guide portion 2g formed at the other end in the axial direction (the end in the tube pull-out direction U) of the nipple 2 and protrudes toward the flow path space W inside the nipple 2 inside the narrow diameter portion 2a. And a channel restricting portion 2h.
  • the annular convex portion 2e is partially expanded in diameter by sheet metal processing at a portion facing the reduced diameter deforming portion 3b of the caulking pipe 3 to be described later in the tube withdrawal direction U rather than the retaining step portion 2d.
  • the flexible tube 1 is formed so as to be slightly larger in diameter than the inner diameter of the flexible tube 1 and narrower than the width of the narrow diameter portion 2a.
  • the cylindrical portion 2f is disposed at a portion facing the reduced diameter deforming portion 3b of the caulking pipe 3 (to be described later) in the radial direction with respect to the tubular removal direction U rather than the annular convex portion 2e.
  • the tapered guide portion 2g is formed so as to be gradually reduced in diameter in the tube removal direction U in order to facilitate the insertion of the connection end portion 1b of the flexible tube 1 into the insertion space S.
  • the flow path restricting portion 2h is formed in an annular shape with a predetermined width on the inner side surface of the small diameter portion 2a by partially reducing the diameter of the nipple 2 in the axial direction by sheet metal processing.
  • the caulking pipe 3 is a rigid material that is compressed and deformed by a pressing process in a radial direction by a caulking machine (not shown), but is not restored and deformed by a repulsive force from the flexible tube 1, and is larger than the outer diameter of the flexible tube 1. It is formed in a substantially cylindrical shape having an inner diameter.
  • a material that can be deformed rather than the nipple 2 such as stainless steel or aluminum is preferable.
  • the caulking pipe 3 is assembled to the outside of the nipple 2 so as to face the double cylinder in the radial direction with the insertion space S of the flexible tube 1 interposed therebetween.
  • an abutting portion 3 a facing the distal end surface 1 a of the flexible tube 1 is bent toward the nipple 2 at one end in the axial direction (the distal end in the tube insertion direction N).
  • a reduced diameter deforming portion 3b by a caulking machine is disposed.
  • a driving caulking machine that moves a plurality of caulking dies arranged at equal intervals in the circumferential direction around the caulking pipe 3 toward the caulking pipe 3 by a driving source such as a hydraulic device, or a manual type caulking machine A caulking machine is used.
  • the caulking pipe 3 has an axial end.
  • a through-hole 3c through which the small-diameter portion 2a of the nipple 2 is inserted is opened inside the contact portion 3a that is bent toward the nipple 2.
  • the nipple 2 and the caulking pipe 3 are assembled together.
  • the other end of the caulking pipe 3 in the axial direction (the end in the tube pull-out direction U) is formed to be longer than the length up to the guide portion 2g of the nipple 2 in a state of being assembled integrally with the nipple 2.
  • a tapered guide portion 3d is gradually moved in the tube pull-out direction U before the caulking pipe 3 to be described later is subjected to deformation deformation processing.
  • the diameter is gradually increased toward the other end. Thereby, it becomes easy to insert the connection end 1b of the flexible tube 1 into the insertion space S.
  • the narrow-diameter portion 2a of the nipple 2, the engaging concave portion 2c, the retaining step portion 2d, the annular convex portion 2e, the cylindrical portion 2f, and the guide portion 2g are radially tightened.
  • a through hole 3c is opened inside an abutting portion 3a bent toward the nipple 2 at one end in the axial direction of the caulking pipe 3.
  • the cylindrical bent portion 3e is integrally formed so as to extend in the tube withdrawal direction U along the small diameter portion 2a of the nipple 2, and the inner side surface of the cylindrical bent portion 3e is formed as the small diameter portion of the nipple 2. Join to 2a. In this joined state, the nipple 2 and the caulking pipe 3 can be assembled together.
  • the inner surface 1c of the flexible tube 1 inserted into the insertion space S is opposed to the outer surface of the cylindrical bent portion 3e disposed on the outer side of the small-diameter portion 2a with a gap therebetween.
  • the engaging recess 2c is formed.
  • the shape of the caulking pipe 3 can be changed to a shape other than the illustrated example.
  • the flexible tube 1 is inserted between the nipple 2 and the caulking pipe 3 (insertion space S) formed into a cylindrical shape by sheet metal processing.
  • the distal end surface 1a of the flexible tube 1 abuts against the contact portion 3a of the caulking pipe 3, and the caulking pipe 3 and the connecting end portion 1b of the flexible tube 1 are positioned at predetermined positions by the stopper 2b of the nipple 2.
  • a gap is formed between the positioned inner surface 1 c of the flexible tube 1 and the small diameter portion 2 a of the nipple 2.
  • the caulking pipe 3 is deformed to a reduced diameter (caulking process) with the caulking machine toward the outer surface 1d of the flexible tube 1.
  • the material 1m of the flexible tube 1 that has flowed as the caulking pipe 3 is reduced in diameter flows into the engagement recess 2c.
  • the material 1m of the flexible tube 1 that has flowed into the engagement recess 2c engages with the retaining step 2d and the flexible tube 1 in the removal direction (tube removal direction) U, so that the flexible tube 1 Is prevented from moving out.
  • a flow passage restricting portion 2h that protrudes toward the flow passage space W is formed inside the narrow diameter portion 2a, so that the fluid passing through the flow passage space W of the nipple 2 can be reduced.
  • the area decreases at the flow path restricting portion 2h. Accordingly, it is possible to simultaneously improve the pull-out strength of the flexible tube 1 with respect to the nipple 2 and adjust the flow rate of the nipple 2 by sheet metal processing. As a result, even if the flexible tube 1 rises in temperature and softens due to the passage of a high-temperature fluid (hot water), the flexible tube 1 cannot be removed and is excellent in safety.
  • a high-temperature fluid hot water
  • the flexible tube 1 can be prevented from coming off. Furthermore, even if parts are replaced from a pipe joint using a thick nipple, the pressure of the fluid (hot water) that passes through the flexible pipe 1 does not decrease, and the fluid (hot water) that passes through the flexible tube 1 is discharged. The momentum does not weaken, and the instantaneous discharge of hot water does not increase, saving water. Further, since the nipple 2 is formed into a cylindrical shape by sheet metal processing, mass supply is easy and cost reduction can be achieved. In addition, since the caulking pipe 3 and the flexible tube 1 are positioned at predetermined positions by the stopper 2b of the nipple 2, the caulking processing of the caulking pipe 3 can be uniformly connected regardless of the operator's experience. .
  • annular convex portion 2e formed so that the nipple 2 protrudes in a radial direction opposite to the reduced diameter deforming portion 3b of the caulking pipe 3 in the withdrawal direction U of the flexible tube 1 rather than the retaining step portion 2d, and an annular convex portion It is preferable to have a cylindrical portion 2f having a smaller diameter than 2e and substantially the same as the inner diameter of the flexible tube 1. In this case, when the flexible tube 1 is inserted into the insertion space S, first, the contact resistance between the cylindrical portion 2f of the nipple 2 and the inner surface 1c of the flexible tube 1 is small, and the annular convex portion 2e is smoothly overcome.
  • the annular convex portion 2 e bites into and comes into close contact with the inner surface 1 c of the flexible tube 1. Therefore, both the smooth insertion of the flexible tube 1 into the insertion space S and the reliable sealing by the annular convex portion 2e can be realized. As a result, the flexible tube 1 can be quickly inserted into the insertion space S and the workability is excellent, and at the same time, fluid leakage from the joint surface between the flexible tube 1 and the nipple 2 can be prevented.
  • the shower hose connection structure includes a pipe joint A and a shower hose 1H in which the pipe joint A is a flexible pipe 1 as shown in FIGS. Or a water supply device B such as a shower head, or a water supply fitting C such as a hot water mixing tap or a water tap.
  • a pipe joint A is prepared, and is attached to only one of the water discharge device B or the water supply fitting C by the connecting cylinder 11 described later.
  • two pipe joints A are prepared and attached to both the water discharge device B and the water supply fitting C by connection cylinders 11 described later.
  • the connecting cylinder 11 is formed in a substantially cylindrical shape with a rigid material such as metal or hard synthetic resin, and has an inner diameter on one end side in the axial direction of the crimping pipe 3 which is the outer diameter of the pipe joint A.
  • the diameter is set slightly larger than the excluded outer diameter portion.
  • the inner diameter on the other end side in the axial direction is set smaller than the outer diameter of the pipe joint A (the outer diameter portion excluding the reduced diameter deforming portion 3 b in the caulking pipe 3).
  • the connecting cylinder 11 has an attachment hole 11a into which the pipe joint A is inserted in a loose fit, and at least one of the nipple 2 and the caulking pipe 3 is engaged in the removal direction (tube removal direction) U of the flexible tube 1.
  • the shower hose 1H coupled to the pipe joint A is connected to the water discharge device B or the water supply fitting C. Therefore, the shower hose 1H cannot be removed from the water discharge device B or the water supply fitting C and can be connected at low cost.
  • FIGS. 1 to 3 a pipe joint A to which one connecting end 1b of a shower hose 1H to be a flexible pipe 1 is connected is connected to a shower by a connecting cylinder 11 (11B).
  • This is a shower hose connection structure connected to a water discharge device B such as a head.
  • the connecting cylinder 11 (11B) used for the water discharger B is a caulking pipe 3 at the other end in the axial direction (the end in the pipe pull-out direction U) in the mounting hole 11a opened on the inner peripheral surface of the connecting cylinder 11.
  • An annular locking step portion 11b that is opposed to the terminal edge 3f in the axial direction is formed.
  • connection portion 11c On the inner peripheral surface on one end side of the mounting hole 11a, a screw portion that is screwed with the screw portion B1 formed on the outer peripheral surface of the distal end of the water discharging device B is provided as a connection portion 11c.
  • an accommodation portion 2 i that is opposed to the attachment hole 11 a of the connecting cylinder 11 (11 ⁇ / b> B) in the radial direction is formed at one end in the axial direction (the tip in the tube insertion direction N), and the accommodation portion 2 i and the attachment hole 11 a A sealing material 12 is interposed between the two.
  • the accommodating part 2i of the nipple 2 and one connecting end part 1b of the shower hose 1H connected thereto are rotatably connected to the mounting hole 11a of the connecting cylinder 11 (11B) via the sealing material 12. Yes.
  • the accommodating portion 2i is integrally bent so as to be continuous with the stopper portion 2b that is bent deeper in the tube insertion direction N than the small diameter portion 2a.
  • U packing 12 a is used as 12.
  • the connection end 1b of the shower hose 1H connected to the pipe joint A is securely connected to the water discharge device B such as a shower head. . Therefore, there is an advantage that the shower hose 1H cannot be removed from the water discharge device B such as a shower head and can be connected at low cost.
  • Example 2 as shown in FIGS. 4 and 5, a pipe joint A to which the other connection end 1 b of the shower hose 1 ⁇ / b> H to be the flexible pipe 1 is connected is connected to hot water by a connection cylinder 11 (11 ⁇ / b> C).
  • the configuration connected to the water supply fitting C such as a mixing tap or a water tap is different from the first embodiment shown in FIGS. 1 to 3, and other configurations are the same as those of the first embodiment shown in FIGS. It is.
  • the connecting cylinder 11 (11C) used for the water supply fitting C has the other end in the axial direction (the end in the pipe pull-out direction U) or one end (at the mounting hole 11a provided on the inner peripheral surface of the connecting cylinder 11).
  • annular locking step portions 11b and 11b ' are formed which are opposed to the end edge 3f of the caulking pipe 3 or the tip edge 2j of the nipple 2 in the axial direction.
  • the entire pipe joint A moves in the direction (pull-out direction) U of the flexible tube 1. It is locked so that it cannot be removed.
  • a screw portion that is screwed with the screw portion C1 formed on the outer peripheral surface of the water supply fitting C is provided as a connection portion 11c.
  • annular locking step portion 11 b that faces the end edge 3 f of the caulking pipe 3 in the axial direction is formed at the other end portion in the axial direction (the end portion in the tube removal direction U) in the mounting hole 11 a. Then, the end edge 3f of the caulking pipe 3 is abutted against the locking step portion 11b.
  • annular locking step portion 11 b ′ that faces the tip edge 2 j of the nipple 2 in the axial direction is formed at one end portion in the axial direction (tip portion in the tube insertion direction N) in the mounting hole 11 a.
  • the leading edge 2j of the nipple 2 is abutted against the locking step portion 11b '.
  • the tip edge 2j of the nipple 2 is integrally bent so as to be continuous with the stopper 2b that is bent to the back side in the tube insertion direction N with respect to the small diameter portion 2a.
  • a sealing material 12 is interposed between one end surface in the axial direction (tip surface in the tube insertion direction N) and the connection end surface C2 of the water supply fitting C in the nipple 2.
  • the one end surface of the nipple 2 in the axial direction and the other connecting end 1b of the shower hose 1H connected to the nipple 2 are connected to the mounting hole 11a of the connecting cylinder 11 (11C) via the sealing material 12.
  • the one end surface in the axial direction of the nipple 2 is the distal end surface of the stopper portion 2 b that is bent to the back side in the tube insertion direction N with respect to the small diameter portion 2 a.
  • a flat packing 12b is used.
  • a separate member is provided on the tip end surface of the stopper 2b as an axial end surface of the nipple 2, or a packing having a shape different from that of the flat packing 12b is used as the sealing material 12. Is also possible.
  • the connection end 1b of the shower hose 1H connected to the pipe joint A is securely connected to the water fitting C such as a hot water mixing tap or a water tap. Connected to. Therefore, there is an advantage that the shower hose 1H cannot be removed from the water supply fitting C such as a hot water mixing tap or a water supply tap and can be connected at low cost.
  • a shower hose connection structure in which a shower hose is connected as a flexible pipe 1 by a pipe joint A to a water discharge device B such as a shower head, or a water supply fitting C such as a hot-water mixing tap or a water tap.
  • a water discharge device B such as a shower head
  • a water supply fitting C such as a hot-water mixing tap or a water tap.

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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)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)

Abstract

La présente invention concerne une amélioration apportée à la résistance à l'éclatement d'un tuyau flexible par rapport à un mamelon, et le réglage du débit dans le mamelon, obtenus simultanément par le traitement de tôles. Un tuyau flexible (1) est inséré dans un espace d'insertion (S) entre un tuyau ondulé (3) et un mamelon (2) ayant des formes cylindriques dans le traitement de tôles, moyennant quoi un espace peut être formé entre le tuyau flexible positionné (1) et la partie à petit diamètre (2a) du mamelon (2). Dans cet état, le tuyau serti (3) est déformé de façon à être contraint vers le tuyau flexible (1), grâce à quoi le matériau (1m) du tuyau flexible (1), qui a circulé le long de la déformation d'étranglement, s'écoule ensuite dans une concavité de mise en prise (2c). En même temps, le matériau (1m) du tuyau flexible (1), ayant circulé dans la concavité de mise en prise (2c), se met en prise avec une nervure de retenue (2d) dans le sens d'extraction (U) du tuyau flexible (1), et le mouvement du tuyau flexible (1) est rendu impossible. Une partie étroite de canal d'écoulement (2h) est formée en saillie vers un espace de conduit d'écoulement (W) sur le côté interne de la partie à petit diamètre (2a) dans le traitement de tôles, et la zone du fluide passant à travers l'espace de conduit d'écoulement (W) du mamelon (2) diminue par conséquent dans la partie étroite de canal d'écoulement (2h).
PCT/JP2015/084001 2014-12-05 2015-12-03 Raccord de tuyau et structure de raccordement de tuyau de douche WO2016088831A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201580065498.2A CN107002924B (zh) 2014-12-05 2015-12-03 管接头及淋浴软管连接结构

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JP2014247129A JP6048978B2 (ja) 2014-12-05 2014-12-05 管継手及びシャワーホース接続構造
JP2014-247129 2014-12-05

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WO2016088831A1 true WO2016088831A1 (fr) 2016-06-09

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CN110735984B (zh) * 2019-10-24 2021-02-12 江苏宏博机械制造有限公司 一种便于安装的高密封性波纹管连接装置
EP3951230A3 (fr) * 2020-08-05 2022-06-15 Nikles Inter AG Système de connexion pour système distributer de l'eau

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