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WO2018198171A1 - Structure de tuyau - Google Patents

Structure de tuyau Download PDF

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Publication number
WO2018198171A1
WO2018198171A1 PCT/JP2017/016221 JP2017016221W WO2018198171A1 WO 2018198171 A1 WO2018198171 A1 WO 2018198171A1 JP 2017016221 W JP2017016221 W JP 2017016221W WO 2018198171 A1 WO2018198171 A1 WO 2018198171A1
Authority
WO
WIPO (PCT)
Prior art keywords
hose
inner member
outer member
groove
hose structure
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2017/016221
Other languages
English (en)
Japanese (ja)
Inventor
前田　達也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takagi Co Ltd
Original Assignee
Takagi Co Ltd
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 Takagi Co Ltd filed Critical Takagi Co Ltd
Priority to PCT/JP2017/016221 priority Critical patent/WO2018198171A1/fr
Priority to CN201780089966.9A priority patent/CN110573782B/zh
Priority to JP2019514899A priority patent/JP6855087B2/ja
Publication of WO2018198171A1 publication Critical patent/WO2018198171A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/11—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall
    • F16L11/115—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall having reinforcements not embedded in the wall

Definitions

  • This disclosure relates to a hose structure.
  • Patent Document 1 discloses a bellows tube (bellows hose) formed from a synthetic resin thin tube material having a straight cylindrical shape.
  • an object of the present disclosure is to provide a hose structure having both stretchability and durability.
  • a hose structure includes a cylindrical inner member that allows fluid to pass through and an outer member that includes an elastic member that covers the inner member, and the inner member is configured to be extendable and contractable along the extending direction. In a state of being contracted in the extending direction, a peak portion protruding in the radial direction and a valley portion recessed in the radial direction are repeated along the extending direction.
  • the outer member covers, for example, an accordion-shaped inner member in which a peak portion and a valley portion are repeated in a contracted state. For this reason, the inner member through which the fluid passes does not directly contact the ground or the like, and the durability of the inner member can be improved. Moreover, since the outer member which covers an inner member contains the elastic member, even when covered with an outer member, the stretchability of an inner member is not impaired. As described above, according to the hose structure according to the present disclosure, both the stretchability and durability of the inner member can be achieved.
  • the outer member may have a groove that is recessed in the radial direction.
  • the groove may be formed at a position corresponding to the valley portion of the inner member.
  • the trough portion expands and contracts mainly due to expansion and contraction.
  • the stretchability of the inner member can be further ensured by forming a thinly formed (easily stretchable) groove at a position corresponding to the valley portion.
  • the position corresponding to the peak portion of the inner member is mainly in contact with the ground or the like, and the groove portion is formed at the position corresponding to the valley portion where contact with the ground or the like is unlikely to occur. By doing this, it is possible to suppress damage during expansion and contraction and ensure durability while improving the above-described stretchability.
  • the inner member extends in the stretching direction by expanding the peak portion and the valley portion in the stretching direction, and contracts in the stretching direction by reducing the peak portion and the valley portion in the stretching direction. It has a thin part with a groove and a thick part formed thicker than the thin part, and the thin part expands in the stretching direction when it extends in the stretching direction, and the thin part shrinks in the stretching direction.
  • stretching direction by doing may be sufficient. Thereby, the structure which ensures the expansion-contraction performance of the extending
  • the outer member may include an elastic member and a coating portion that covers the elastic member. Since the outer member includes not only the elastic member but also the coating portion that covers the elastic member, the durability of the outer member and the inner member can be further improved.
  • FIG. 1 is a perspective view of the hose structure according to the first embodiment.
  • FIG. 2 is a diagram schematically showing the inner member and the outer member in a water-impervious state.
  • Drawing 3 is a figure showing typically the inner member and outer member of a water-impervious state in the hose structure concerning a 2nd embodiment.
  • FIG. 4 is a diagram schematically showing a water-impervious inner member and outer member in the hose structure according to the third embodiment.
  • FIG. 5 is a diagram schematically showing a water-impervious inner member and outer member in the hose structure according to the fourth embodiment.
  • the hose structure 1 includes a hose part 10, a liquid source connector 11, a nozzle connector 12, and a nozzle part 13.
  • the hose structure 1 is configured to be portable and has a function of supplying a liquid (fluid) such as water from a supply source (liquid source) outdoors or indoors.
  • a liquid such as water from a supply source (liquid source) outdoors or indoors.
  • the hose structure 1 that supplies fluid is described as supplying liquid, but gas may be supplied.
  • the hose part 10 is a long hollow tube for sending the liquid supplied from the liquid source.
  • the hose unit 10 sends a liquid such as water.
  • the hose portion 10 will be described as one that sends water, but is not limited to this, and may be one that sends other liquid, for example.
  • the hose part 10 is described as being connected to a water supply facility (for example, a water faucet) that is a liquid source via the liquid source connector 11, the hose unit 10 is not limited to this and is not limited to the liquid source connector 11. It may be indirectly connected to the water supply equipment through a hose or the like.
  • the hose portion 10 is fully extended by water pressure in a water passage state (a state where water flows), and is in a contracted state by removing the water pressure in a non-water passage state (a state where water is not flowing).
  • a water passage state a state where water flows
  • a non-water passage state a state where water is not flowing
  • the hose part 10 is configured to be freely extendable. Details of the hose portion 10 will be described later.
  • the liquid source connector 11 is a connector for connecting the water supply equipment and the hose portion 10.
  • the liquid source connector 11 is connected to the proximal end side of the hose portion 10. That is, the liquid source connector 11 is an inflow port of water sent from the water supply facility to the hose unit 10.
  • the nozzle connector 12 is a connector that connects the hose part 10 and the nozzle part 13 together.
  • the nozzle connector 12 is connected to the distal end side of the hose portion 10. That is, the nozzle connector 12 is an outlet for water to be sent from the hose portion 10 to the nozzle portion 13.
  • the nozzle unit 13 is a watering nozzle that sprinkles water sent from the water supply facility via the hose unit 10 to a water supply destination.
  • the nozzle unit 13 includes a gun lever 14 and a nozzle screen 15. The nozzle unit 13 discharges water from the nozzle screen 15 when the gun lever 14 is gripped (pushed in) by the user.
  • the hose portion 10 includes an inner member 16 and an outer member 17. Each of the inner member 16 and the outer member 17 has a proximal end connected to the liquid source connector 11 and a distal end connected to the nozzle connector 12 (see FIG. 1).
  • the inner member 16 is a cylindrical water passage through which water passes.
  • the inner member 16 is a bellows-like hose configured to be expandable / contractable in the direction of sending water (stretching direction) according to the water pressure. That is, the inner member 16 has a structure in which so-called mountain folds and valley folds are repeated (a structure in which the cross-section is inverted V-shaped and V-shaped). And the trough part 16b dented in radial direction is repeated in the extending
  • the inner member 16 extends in the stretching direction when the crest portion 16a and the valley portion 16b expand in the stretching direction, and contracts in the stretching direction when contracted.
  • the inner member 16 is in close contact with the outer member 17 at the peak portion 16a.
  • the inner member 16 In the water passage state, the inner member 16 has a trough portion 16b that spreads radially outward (on the crest portion 16a side) due to water pressure, thereby extending in the extending direction. On the other hand, in the waterless state, the inner member 16 is removed from the water pressure, the valley portion 16b returns to the inner side in the radial direction, and contracts to the original state (the state shown in FIG. 2).
  • the inner member 16 is made of a hard material such as polyethylene or polyvinyl chloride.
  • the length in the extending direction of the inner member 16 is, for example, about 5 to 50 m, for example, 15 m in the extended state.
  • the length in the extending direction of the inner member 16 is, for example, about 2.5 m to 25 m, for example, 7.5 m in the contracted state.
  • the inner member 16 has an inner diameter (inner diameter of a portion for feeding water) of, for example, ⁇ 7 mm to ⁇ 15 mm.
  • the inner member 16 has a thickness of, for example, 0.3 mm to 1.0 mm.
  • the outer member 17 is an elastic member that covers the inner member 16.
  • the outer member 17 is made of a material such as natural rubber, synthetic rubber, or thermoplastic elastomer.
  • the length of the outer member 17 in the extending direction is, for example, about 5 to 50 m, for example, 15 m in the extended state.
  • the length in the extending direction of the outer member 17 is, for example, about 2.5 m to 25 m, for example, 7.5 m in the contracted state.
  • the thickness of the outer member 17 is, for example, 0.5 mm to 2.0 mm.
  • the outer member 17 has a groove portion 17a that is recessed (notched) in the radial direction.
  • the groove portions 17 a are formed over the entire outer periphery of the outer member 17, and a plurality of the groove portions 17 a are continuously arranged at regular intervals in the extending direction of the outer member 17.
  • the groove portion 17a is formed at a position corresponding to the valley portion 16b of the inner member 16 facing in the radial direction. That is, as shown in FIG. 2, in a state where the inner member 16 is contracted, the groove portion 17a faces the valley portion 16b in the radial direction.
  • the groove portion 17a and the valley portion 16b correspond one-to-one
  • one groove portion 17a is provided corresponding to each valley portion 16b.
  • the valley portions 16b and the groove portions 17a do not have to correspond one-to-one.
  • the number of groove portions 17a may be about half of the number of valley portions 16b.
  • the outer member 17 includes a thin portion 17x in which the groove portion 17a is formed, and a thick portion 17y that is formed thicker than the thin portion 17x (that is, the groove portion 17a is not formed).
  • the outer member 17 extends mainly in the extending direction when the thin portion 17x expands in the extending direction, and contracts in the extending direction mainly when the thin portion 17x decreases in the extending direction.
  • the depth (dent length) of the groove portion 17a is, for example, about 50% of the thickness of the outer member 17 (more specifically, the thick portion 17y), for example, 0.25 mm to 1.0 mm.
  • the width of the groove portion 17a is, for example, 0.1 mm to 1.0 mm.
  • An interval between the groove portions 17a is, for example, 1.0 mm to 5.0 mm.
  • the hose structure 1 includes the cylindrical inner member 16 that allows water to pass through and the outer member 17 that is an elastic member that covers the inner member 16, and the inner member 16 extends.
  • the bellows-like hose is configured to be stretchable along the direction, and in a state of being contracted in the extending direction, a peak portion 16a projecting in the radial direction and a valley portion 16b recessed in the radial direction are repeated along the extending direction. It is.
  • the outer member 17 covers, for example, the bellows-shaped inner member 16 in which the peak portion 16a and the valley portion 16b are repeated in the contracted state. For this reason, the inner member 16 through which water passes does not directly contact the ground or the like, and the durability of the inner member 16 can be improved.
  • covering the bellows-like hose with the outer member can improve the durability of the hose, but the outer member may hinder expansion and contraction of the hose. That is, when the outer member covers the expanding and contracting hose, the hose may not be sufficiently expanded and contracted by water pressure.
  • the stretchability of the inner member 16 is impaired even when the outer member 17 is covered. There is no. That is, when the inner member 16 expands and contracts according to the water pressure, the outer member 17 that is an elastic member can also be expanded and contracted according to the inner member 16, so that the outer member 17 is prevented from obstructing the expansion and contraction of the inner member 16. Can be configured. As described above, according to the hose structure 1, both the stretchability and durability of the inner member 16 can be achieved.
  • the outer member 17 has a groove portion 17a that is recessed in the radial direction.
  • the part (groove part 17a) by which the thickness was partially thinned in the outer member 17 is formed.
  • the stretchability of the outer member 17 in the extending direction is improved.
  • the stretchability of the inner member 16 covered with the outer member 17 can be ensured, and can be appropriately stretched even in a low water pressure region.
  • the groove portion 17 a is formed at a position corresponding to the valley portion 16 b of the inner member 16. More specifically, in the state where the inner member 16 is contracted, the groove portion 17a faces the valley portion 16b in the radial direction (see FIG. 2). In the bellows-shaped inner member 16 in which the crest portion 16a and the trough portion 16b are repeated, the trough portion 16b is expanded in the radial direction by the water pressure, and is thus extended in the stretching direction. For this reason, the thinly formed (easily stretchable) groove portion 17a is formed at a position corresponding to the valley portion 16b, whereby the stretchability of the inner member 16 can be further secured.
  • the position where the inner member 16 is in close contact with the peak portion 16 a easily protrudes outward in the radial direction and mainly comes into contact with the ground or the like.
  • the hose portion 20 of the hose structure 2 according to the second embodiment includes an inner member 26 and an outer member 27.
  • the inner member 26 has the same configuration as the inner member 16 according to the first embodiment described above, for example.
  • the outer member 27 is the same as the outer member 17 described above with respect to the constituent material, the length in the stretching direction, and the thickness.
  • the outer member 27 has a groove 27a that is recessed (notched) in the radial direction.
  • the groove portions 27 a are formed over the entire outer periphery of the outer member 27, and a plurality of the groove portions 27 a are arranged at predetermined intervals in the extending direction of the outer member 27.
  • the groove portion 27a is formed at a position corresponding to the valley portion 26b of the inner member 26 facing in the radial direction.
  • the groove portions 17 a are continuously arranged at a constant interval in the extending direction of the outer member 17, but in the hose portion 20, the groove portions 27 a are the outer member 27. Are arranged at non-constant intervals in the extending direction (see FIG. 3). And in the hose part 10 of 1st Embodiment, although the one groove part 17a was provided with respect to each trough part 16b, in the hose part 20, some trough parts 26b (for example, trough shown in FIG. 3). Corresponding grooves 27a are not provided for part 26x).
  • the depth (dent length) and width of the groove 27a are, for example, approximately the same as the groove 17a.
  • a wide interval and a narrow interval are alternately repeated, and the wide interval is set to 5.0 mm to 10.0 mm and the narrow interval is set to 1.0 mm to 5.0 mm, for example.
  • a plurality of the groove portions 27 a are arranged at non-constant intervals in the extending direction of the outer member 27, and some trough portions 26 b (for example, trough portions 26 x shown in FIG. 3). ) Is not provided with a corresponding groove 27a.
  • the ease of manufacturing can be improved by limiting the locations where the grooves 27a are formed.
  • the groove portion 27a provided in a limited manner is provided at a position corresponding to the valley portion 26b, the stretchability can be ensured as in the first embodiment.
  • the hose portion 30 of the hose structure 3 according to the third embodiment includes an inner member 36 and an outer member 37.
  • the inner member 36 has the same configuration as the inner member 16 according to the first embodiment described above, for example.
  • the outer member 37 includes an elastic member 38 and a coating portion 39.
  • the elastic member 38 has the same configuration as that of the outer member 17 according to the first embodiment described above, for example, and has a plurality of groove portions 38a that are continuously arranged at a constant interval in the extending direction. That is, the outer member 37 has a configuration in which the coating part 39 is added to the outer member 17 (the elastic member 38 in the present embodiment) according to the first embodiment.
  • the coating part 39 is a member that covers the elastic member 38.
  • the coating part 39 is comprised with materials, such as resin, rubber
  • the coating portion 39 is provided at a position corresponding to the peak portion 36 a in the elastic member 38. That is, the coating part 39 is provided in a region excluding the groove part 38 a of the elastic member 38.
  • the coating portion 39 is provided at a position corresponding to the mountain portion 36 a that mainly comes into contact with the ground or the like in the elastic member 38.
  • abrasion resistance with the ground etc. in the outer member 37 improves, and durability of the hose part 30 can be improved.
  • the hose portion 40 of the hose structure 4 according to the fourth embodiment includes an inner member 46 and an outer member 47.
  • the inner member 46 has the same configuration as the inner member 16 according to the first embodiment described above, for example.
  • the outer member 47 is the same as the outer member 17 described above with respect to the constituent material, the length in the stretching direction, and the thickness.
  • the groove portion 17 a is formed in the outer member 17, but in the hose portion 40, the groove portion is not formed in the outer member 47.
  • the outer member 17 covers the bellows-like inner member 46.
  • the inner member 46 through which water passes does not directly contact the ground or the like, and the durability of the inner member 46 can be improved.
  • no groove is formed in the outer member 47.
  • abrasion resistance with the ground etc. in the outer member 47 improves, and durability of the hose part 40 can further be improved.
  • the groove part is not formed in the outer member, it is possible to realize a configuration in which the stretchability of the inner member is not impaired by the outer member 47 being an elastic member.
  • the above-described formation of the groove and the like is not necessary, it is possible to improve manufacturability.
  • the inner member has been described as having a structure in which so-called mountain folds and valley folds are repeated (a structure in which cross-sectional inverted V-shaped and V-shaped are repeated). It may be.
  • a flat portion that does not have unevenness is sandwiched between adjacent mountain portions and valley portions, and the adjacent mountain portions and valley portions may not be continuous.
  • a crest portion and a trough portion may be mixed in the circumferential direction.
  • the diameter of the bellows-shaped inner member (bellows diameter) may not be constant in the longitudinal direction.
  • the inner member has been described as a bellows-like hose, but the inner member is not limited thereto, and may be a spiral hose such as a telephone cord. Even in this case, the outer hose (outer rubber) may cover the spiral hose (inner member).
  • groove part formed in an outer member demonstrated as having been formed over the perimeter of an outer member's outer periphery, it is not limited to this, For example, it forms only in a part of outer periphery (for example, a semicircle) of an outer member. It may be a thing.
  • one groove portion may be formed along the extending direction so as to draw a spiral locus.
  • the groove portion is formed at a position corresponding to the valley portion of the inner member, the groove portion is not limited to this, and may be formed at a position corresponding to the mountain portion of the inner member.
  • the coating portion is provided in a region excluding the groove portion, but the present invention is not limited thereto, and the coating portion is provided in the groove portion. It may be.
  • the groove portion is provided in the elastic member.
  • the elastic member has a flat shape without unevenness, and the elastic member You may employ
  • the region where the coating portion is not provided is thinner than the region where the coating portion is provided, thereby forming a groove that is recessed in the radial direction.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

L'invention concerne une structure de tuyau qui comprend un élément interne cylindrique qui permet le passage de l'eau; et un élément externe qui comprend un élément élastique qui recouvre l'élément interne. L'élément interne peut s'étirer/se contracter le long de sa direction d'extension. Lorsque l'élément interne est contracté dans la direction d'extension, des sections de crêtes qui font saillie dans la direction radiale et des parties vallées en creux dans la direction radiale sont formées de manière répétée le long de la direction d'extension.
PCT/JP2017/016221 2017-04-24 2017-04-24 Structure de tuyau Ceased WO2018198171A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2017/016221 WO2018198171A1 (fr) 2017-04-24 2017-04-24 Structure de tuyau
CN201780089966.9A CN110573782B (zh) 2017-04-24 2017-04-24 软管构造体
JP2019514899A JP6855087B2 (ja) 2017-04-24 2017-04-24 ホース構造体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/016221 WO2018198171A1 (fr) 2017-04-24 2017-04-24 Structure de tuyau

Publications (1)

Publication Number Publication Date
WO2018198171A1 true WO2018198171A1 (fr) 2018-11-01

Family

ID=63919591

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/016221 Ceased WO2018198171A1 (fr) 2017-04-24 2017-04-24 Structure de tuyau

Country Status (3)

Country Link
JP (1) JP6855087B2 (fr)
CN (1) CN110573782B (fr)
WO (1) WO2018198171A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5925513A (ja) * 1982-08-03 1984-02-09 松下電工株式会社 可撓性合成樹脂二重管の製造方法
JP2001021069A (ja) * 1993-06-14 2001-01-26 Tokai Rubber Ind Ltd プロテクタ付ホース
US20160319965A1 (en) * 2015-04-28 2016-11-03 Thomas William David Ashcroft Expandable and contractible hose
US20160363242A1 (en) * 2015-02-12 2016-12-15 Den Di De Nora Paolo Extensible hose

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2127646A1 (de) * 1971-06-03 1973-01-04 Fraenk Isolierrohr & Metall Kunststoffrohr mit gewellter wandung
JPS51111517U (fr) * 1975-03-06 1976-09-09
JPS5635979U (fr) * 1979-08-29 1981-04-07
JP2002195468A (ja) * 2000-12-27 2002-07-10 Totaku Industries Inc 空調用ドレンホース
US8776836B2 (en) * 2001-11-24 2014-07-15 Ragner Technology Corporation Linearly retractable pressure hose structure
US6681808B2 (en) * 2002-03-13 2004-01-27 Oki Electric Industry Co, Ltd. Flexible tube for vacuum system
JP2009108988A (ja) * 2007-11-01 2009-05-21 Evuc Kk 可撓性を有する耐圧合成樹脂管
CN201982824U (zh) * 2011-03-10 2011-09-21 沈家同 抗压抗冲击任意角度塑料弯管
CN203099133U (zh) * 2013-01-25 2013-07-31 广东威立瑞科技有限公司 双壁复合波纹管材

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5925513A (ja) * 1982-08-03 1984-02-09 松下電工株式会社 可撓性合成樹脂二重管の製造方法
JP2001021069A (ja) * 1993-06-14 2001-01-26 Tokai Rubber Ind Ltd プロテクタ付ホース
US20160363242A1 (en) * 2015-02-12 2016-12-15 Den Di De Nora Paolo Extensible hose
US20160319965A1 (en) * 2015-04-28 2016-11-03 Thomas William David Ashcroft Expandable and contractible hose

Also Published As

Publication number Publication date
CN110573782A (zh) 2019-12-13
JP6855087B2 (ja) 2021-04-07
CN110573782B (zh) 2021-03-23
JPWO2018198171A1 (ja) 2020-01-16

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