WO2011058871A1 - ホース継手 - Google Patents
ホース継手 Download PDFInfo
- Publication number
- WO2011058871A1 WO2011058871A1 PCT/JP2010/068854 JP2010068854W WO2011058871A1 WO 2011058871 A1 WO2011058871 A1 WO 2011058871A1 JP 2010068854 W JP2010068854 W JP 2010068854W WO 2011058871 A1 WO2011058871 A1 WO 2011058871A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hose
- peripheral surface
- elastic packing
- holder
- nipple
- Prior art date
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Classifications
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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
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/0036—Joints for corrugated pipes
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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
- F16L33/22—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
- F16L33/222—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 external piece comprising segments pressed against the hose by wedge shaped elements
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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
- F16L33/22—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
- F16L33/23—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 outer parts being segmented, the segments being pressed against the hose by tangentially arranged members
Definitions
- the present invention relates to a hose coupling that is easy to disassemble and clean. More particularly, the present invention relates to a hose joint having a nipple and a cylindrical elastic packing and a holder.
- a nipple having a disk-like projection projecting outward at the hose insertion end position, and a spiral uneven portion or flat portion which can be fitted along the shape of the hose outer peripheral surface
- a C-shaped cylindrical elastic packing having an inner circumferential surface and an end section broken in the vertical direction of the cylinder, and a cylindrical elastic packing divided into two in the vertical direction of the cylinder, and connecting these in a cylindrical shape with bolts and nuts
- the holder has a hole, and has two projections at each end of the inner peripheral surface, and the central part of the inner peripheral surface is a flat shape, and the projection at one end is a disk shape of the nipple It consists of a holder installed on the outside of the projection, and it is easy to exchange different types of hoses, specifically resin hoses whose outer circumferential surface is a spiral uneven surface and resin hoses whose flat outer surface is a flat surface.
- the center portion of the inner peripheral surface of the holder and the outer peripheral surface of the elastic packing in contact therewith are both formed in a flat shape and in parallel with the inner peripheral surface of the hose.
- the outer peripheral surface of the elastic packing slides against the inner peripheral surface of the holder to shift the position. It may happen. Therefore, a protrusion is formed at the end portion in the hose removal direction on the inner peripheral surface of the holder, and the same direction end face of the elastic packing is abutted against the protrusion to prevent positional deviation of the elastic packing and the holder.
- the height dimension of the projection is approximately the same as the thickness dimension of the elastic packing.
- the protrusion can be arranged only outside the helical uneven shape of the hose outer peripheral surface, As a result, only the outer peripheral portion of the end face of the elastic packing abuts against the projection.
- the height dimension of the protrusion is substantially the same as the thickness dimension of the elastic packing, Although the positional displacement between the elastic packing and the holder can be prevented even if the hose is pulled, the positional displacement occurs between the inner peripheral surface of the elastic packing and the outer peripheral surface of the hose, so that only the hose may be pulled out of the nipple. was there.
- a half-divided holder is inserted from above the elastic packing and tightened with a bolt and a nut, since the elastic packing before tightening the hose is expanded, it does not slip along the inner circumferential surface of the holder.
- the elastic packing is made of, for example, a material having a large frictional resistance such as rubber
- the outer peripheral surface of the elastic packing and the inner peripheral surface of the holder become even more difficult to slide, which takes time and effort in assembly work.
- tightening may cause the elastic packing to stick out, resulting in fluid leakage through the inside of the hose.
- the present invention is intended to address such a problem, and it is an object of the present invention to prevent the hose from being pulled out with a simple structure, and to prevent the packing from protruding and pinching between the joints of the two divided pieces. It is intended to prevent, to make elastic packing easy to put in the holder and to lighten the tightening operation of the holder, and to control the tightening operation by the holder to be gradually heavy.
- the present invention relates to a nipple inserted into a hose and provided facing the inner circumferential surface of the hose, and the hose facing the outer circumferential surface of the hose into which the nipple is inserted.
- a cylindrical elastic packing formed so as to be elastically deformable in the radial direction of the radial direction and a cylindrical shape covering the outer periphery of the elastic packing and divided into a plurality of divided pieces in the radial direction, and these divided pieces are connected in a cylindrical shape
- the divided pieces are tightened in the radial direction so that the elastic packing is reduced in diameter and the inner peripheral surface of the hose is made the outer peripheral surface of the nipple.
- a holder for bringing into close contact the inner circumferential surface of the holder facing the outer circumferential surface of the elastic packing, the nipple being directed in a direction opposite to the insertion direction of the hose with respect to the nipple;
- a tapered surface inclined so as to gradually approach the outer peripheral surface is formed, characterized in that said resilient gasket against the tapered surface and the nipple is supported movably above the counter-insertion direction.
- an excess portion of the packing generated as a result of the diameter-decreasing deformation of the elastic packing by the divided pieces of the holder on one or both of the outer peripheral surface of the elastic packing and the tapered surface of the holder It is characterized in that a notched recess is formed to be accommodated.
- a plurality of circumferentially extending ridges and grooves are alternately formed in the axial direction on either or both of the outer peripheral surface of the elastic packing and the tapered surface of the holder. I assume.
- annular recess extending in the circumferential direction in the form of a band in the circumferential direction on either or both of the outer circumferential surface of the elastic packing and the tapered surface of the holder is axially centered crossing the circumferential direction. It is characterized in that it is formed to be gradually deeper toward the end.
- the present invention having the features described above gradually approaches the outer peripheral surface of the nipple in the opposite insertion direction opposite to the insertion direction of the hose with respect to the inner peripheral surface of the holder facing the outer peripheral surface of the elastic packing.
- the elastic packing is moved in the opposite insertion direction along with the hose by movably supporting the elastic packing in the opposite insertion direction with respect to the tapered surface and the nipple.
- the elastic packing is further compressed and deformed in the radial direction of the hose.
- the hose Since the hose is crimped between the nipple and the nipple so as not to move in the opposite direction of insertion, the hose can be prevented from coming off with a simple structure. As a result, even if the elastic packing is pulled together with the hose, the end face of the elastic packing does not tear as in the prior art, and the seal can be reliably performed.
- a cutout recess is provided which accommodates the remainder of the packing generated as the elastic packing is contracted by the divided pieces of the holder.
- annular recess extending in the circumferential direction in the circumferential direction is gradually deepened toward the axial center intersecting with the circumferential direction on either or both of the outer circumferential surface of the elastic packing and the tapered surface of the holder.
- the clamping operation is light because the outer peripheral surface of the elastic packing and the tapered surface of the holder contact at the beginning except for the annular recess due to the clamping of the divided pieces of the holder at the beginning. Since the annular recess is slightly crushed and the contact area with the tapered surface of the holder is increased along with the diameter reduction deformation of the elastic packing, the tightening operation gradually becomes heavy, so that the tightening operation by the holder is controlled to be gradually heavy Can. As a result, it is easy to perform the tightening operation, and the assembling workability is improved. This is particularly effective in the case where decomposition cleaning is performed every day after the end of production in a place such as a food factory where hygiene management is severe.
- FIG. 2 is an enlarged longitudinal sectional view taken along the line (2)-(2) of FIG. 1 (b). It is the same perspective view, and (a)-(f) is shown in order of an assembly process.
- FIG. 2 is an enlarged longitudinal sectional view taken along the line (2)-(2) of FIG. 1 (b). It is the same perspective view, and (a)-(f) is shown in order of an assembly process.
- FIG. 2 is an enlarged longitudinal sectional view taken along the line (2)-(2) of FIG. 1 (b). It is the same perspective view, and (a)-(f) is shown in order of an assembly process.
- the hose joint A is inserted into the connection end of the flexible hose H and provided opposite to the inner peripheral surface H1 of the hose H as shown in FIGS. 1 to 9.
- a holder 3 which is divided into a plurality of divided pieces 3a in the radial direction.
- the holder 3 By connecting the divided pieces 3a of the holder 3 in a cylindrical shape, the holder 3 is locked immovably in the axial direction with respect to the nipple 1, and the divided pieces 3a of the holder 3 are further tightened in the radial direction.
- the packing 2 is reduced in diameter and the inner peripheral surface H 1 of the hose H is in close contact with the outer peripheral surface 1 a 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
- a hard material such as a metal such as brass or hard synthetic resin
- the plate material made of a possible rigid material is formed into a thin cylindrical shape by pressing or other forming process, and the hose H is inserted along the outer peripheral surface 1a.
- An outer circumferential surface 1a of the nipple 1 is provided with a circumferential groove 1b extending annularly in the circumferential direction, and an annular packing 1c such as an O-ring, for example, is provided in the circumferential groove 1b.
- a bulging portion 1d which is fitted so as to partially project from 1a and which has a circumferential height substantially equal to the height of the annular packing 1c from the outer peripheral surface 1a of the nipple 1 so as to sandwich the circumferential groove 1b in the axial direction.
- the circumferential groove 1b side is formed in the shape of a slope or arc which protrudes high.
- a plurality of circumferential grooves 1b and annular packings 1c are arranged in the axial direction on the outer circumferential surface 1a of the nipple 1 at predetermined intervals in the axial direction, and the outer circumferential surface 1a between the circumferential grooves 1b is formed concavely.
- the hose H is difficult to remove while achieving weight reduction.
- the bulging portion 1d is disposed so as to project slightly lower than the projecting height of the annular packing 1c.
- the bulging portion 1d is also possible to arrange the bulging portion 1d to be the same as the projecting height of the annular packing 1c or slightly higher than the projecting height of the annular packing 1c. Further, on the outer peripheral surface 1a of the nipple 1, on the back side of the circumferential groove 1b in the insertion direction of the hose H (hereinafter referred to as the hose insertion direction), a recess or a locking portion 1e for locking the holder 3 described later The convex part etc. are formed.
- a chevron convex portion 1g which is inclined toward the protruding end of the bulging portion 1d and which protrudes substantially the same as the protruding height of the bulging portion 1d.
- connection portion 1j for connecting to a tube connection port (not shown) of another device is continuously provided.
- connection portion 1j in the case where, for example, an inner screw is engraved on the inner peripheral surface of a pipe connection port of another device connected to the hose joint A, an outer screw corresponding to this is cut.
- an outer thread is provided on the outer peripheral surface of the pipe connection port, an inner thread corresponding to the outer thread is provided.
- the outer peripheral surface on the proximal end side of the nipple 1 has a flat portion engaged with a tool or the like as an example shown in FIGS. 1 and 3 as a non-slip means 1k for rotational operation. It is preferable to form a plurality of projections at appropriate intervals in the circumferential direction, or to form an uneven portion such as a knurling.
- the elastic packing 2 is, for example, rubber or a synthetic resin such as polyacetal resin or the like and an elastically deformable material having excellent slipperiness and heat resistance of the other surfaces, and a predetermined length in the axial direction at the connection end of the hose H It is formed in the shape of a cylinder covering the groove, and if necessary, it is configured to be elastically deformable in the radial direction by forming a plurality of axially extending slot 2a extending in a single direction or circumferential direction at predetermined intervals. In the illustrated example, the elastic packing 2 is formed with a notch 2a.
- the outer peripheral surface 2b of the elastic packing 2 be formed in a tapered shape facing the inner peripheral surface of the holder 3 to be described later so that the diameter gradually decreases in the counter insertion direction.
- the inner peripheral surface 2c of the elastic packing 2 is opposed to the outer peripheral surface H2 of the hose H, and a spiral reinforcing convex portion H3 is integrally formed on the outer peripheral surface H2 as in the example shown in FIGS.
- a spiral reinforcing convex portion H3 is integrally formed on the outer peripheral surface H2 as in the example shown in FIGS.
- a helical concave portion 2d fitted with the reinforcing convex portion H3 is formed.
- the holder 3 is formed in a cylindrical shape having an inner diameter larger than the outer diameter of the hose H and made of a material the same as or different from the nipple 1 and divided into a plurality of divided pieces 3 a in the radial direction.
- a convex portion or a concave portion is formed as a locking portion 3b that locks in an axial direction so as not to move.
- the divided pieces 3a are put on the outer side of the elastic packing 2 and the divided pieces 3a are tightened in the radial direction by the tightening means 3c, so that the respective locking portions 3b are in the axial direction with respect to the locking portion 1e of the nipple 1.
- each divided piece 3a While being locked immovably, the inner peripheral surface of each divided piece 3a is in pressure contact with the outer peripheral surface 2b of the elastic packing 2 and is compressed and pressurized in the radial direction. Further, on the inner peripheral surface of the divided piece 3a to be the holder 3, there is formed a tapered surface 3d which is inclined so as to gradually approach the outer peripheral surface 1a of the nipple 1 in the counter insertion direction. The elastic packing 2 is supported movably in the opposite direction to the insertion direction 1.
- the hose H is formed into a flexible and elastically deformable tube made of a soft synthetic resin such as vinyl chloride or a soft material such as silicone rubber.
- a specific example of the hose H 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.
- a braided reinforced hose obtained by braiding a threadlike reinforcing material on the outer peripheral surface of a hose, a spiral reinforced hose formed by spirally embedding a metal wire or a hard synthetic resin wire, a flexible synthetic resin hose having a single layer structure, or the like is used. In the example shown in FIGS.
- the hose H having a helical uneven shape is used, in which the inner peripheral surface H1 of the hose H is formed smooth and the helical reinforcing protrusion H3 is integrally formed on the outer peripheral surface H2. ing.
- the hose H in which the inner peripheral surface H1 and the outer peripheral surface H2 of the hose H are smooth is used.
- the divided pieces 3a of the holder 3 are tightened in the radial direction by the tightening means 3d before tightening the hose.
- the elastic packing 2 is deformed to reduce the diameter thereof and the inner peripheral surface H1 of the hose H is brought into close contact with the outer peripheral surface 1a of the nipple 1.
- the elastic packing 2 is moved in the opposite insertion direction along with the hose H, as shown by the arrow B in FIG.
- the elastic packing 2 When the outer peripheral surface 2b of the elastic packing 2 is displaced in the reverse insertion direction along the tapered surface 3d of the inner periphery of the holder 3, the elastic packing 2 is further compressed and deformed radially by the tapered surface 3d.
- the inner peripheral surface 2c is further crimped to the outer peripheral surface H2 of the hose H, so that the hose H is nipped between the nipple 1 and the nipple 1 in the opposite insertion direction so as not to move. As a result, the hose H can be prevented from coming off with a simple structure.
- the hose is tightened in the radial direction by the divided pieces 3a of the holder 3
- the inner peripheral surface H1 of the hose H and the nipple 1 are arranged such that the bulging portion 1d protruding from the outer peripheral surface 1a of the nipple 1 is engaged with the inner peripheral surface H1 of H and the flat portion 1f is in surface contact.
- the chevron convex portion 1g When the chevron convex portion 1g is formed to be inclined from the flat portion 1f to the protruding end of the bulging portion 1d and to project substantially at the same height as the protruding height of the bulging portion 1d, the chevron convex portion at the time of inserting the hose H When overcoming 1 g, the inner diameter of the hose H is expanded to reach the bulging portion 1 d while the expanded diameter is deformed, so that the hose H can be easily inserted into the nipple 1.
- the reverse tapered surface 1i is formed on the tip inner circumferential surface of the nipple 1 so as to gradually expand in diameter toward the tip edge 1h of the nipple 1, the reverse tapered surface 1i is the inner circumferential surface H1 of the hose H. Continuously, there is an advantage that the fluid flows smoothly without the occurrence of a liquid pool near the tip edge 1h of the nipple 1.
- the notch recessed part 4a is formed on either or both of the outer peripheral surface 2b of the elastic packing 2 and the tapered surface 3d to be the inner peripheral surface of the holder 3, a plurality of circumferentially extending ridges 4b and recessed grooves 4c are alternately formed in the axial direction.
- the low friction portion 4d is provided.
- annular recess 4e extending in the circumferential direction in the circumferential direction is formed on one or both of the outer circumferential surface 2b of the elastic packing 2 and the tapered surface 3d serving as the inner circumferential surface of the holder 3 It is preferable to form so as to be gradually deeper toward the center.
- the elastic packing 2 is formed into a C-shaped cross section by providing a single slit 2a on the entire length in the axial direction on a cylindrical body made of rubber or the like.
- the elastic packing 2 is formed into a C-shaped cross section by providing a single slit 2a on the entire length in the axial direction on a cylindrical body made of rubber or the like.
- the holder 3 Along the diameter-decreasing deformation of the elastic packing 2 by the holder 3 on either or both of the outer peripheral surface 2 b of the elastic packing 2 and the tapered surface 3 d to be the inner peripheral surface of the holder 3. It shows the case where the notch recessed part 4a which accommodates the remainder of the packing which arose is formed.
- the outer peripheral surface 2b of the elastic packing 2 is formed to be smooth, and the notches 4a are formed on both sides of the grate 2a.
- an arbitrary portion of the tapered surface 3 d which is the outer circumferential surface 2 b of the elastic packing 2 or the inner circumferential surface of the holder 3 is formed in the tapered surface 3 d which is the inner circumferential surface of the holder 3. It is also possible to form a plurality or a single notch recess 4a in.
- a projecting piece 2f opposed to the tip surface (cut surface) H4 of the inserted hose H is integrally formed, and the tip surface H4 of the hose H is on the projecting piece 2f.
- the hose H is inserted until it abuts.
- a pressing projection 2e is formed at a position where the spiral concave portion 2d is not formed on the inner peripheral surface 2c of the elastic packing 2, between the annular packing 1c of the nipple 1, the flat portion 1f and the bulging portion 1d and the chevron convex portion 1g. It is preferable to form so that it may oppose the location which needs pressing, such as a recessed part.
- the holder 3 is divided into a pair of divided pieces 3a, and a bolt is inserted as a tightening means 3c into a through hole 3e drilled across the pair of divided pieces 3a.
- a bolt is inserted as a tightening means 3c into a through hole 3e drilled across the pair of divided pieces 3a.
- the divided pieces 3a move in the radial direction to approach or separate from each other.
- a hose having a helical uneven shape in which a helical reinforcing convex portion H3 is integrally formed on the outer peripheral surface H2 is connected.
- connection method of the hose H by such a hose coupling A is demonstrated according to process order.
- the elastic packing 2 is put on the connection end of the hose H, and the spiral concave 2d of the elastic packing 2 is formed on the helical reinforcing protrusion H3 of the hose H. Make it fit.
- the nipple 1 is inserted into the connection end of the hose H to integrate the hose H and the elastic packing 2 with the nipple 1.
- the pair of divided pieces 3a is covered on the outside of the elastic packing 2 to make it cylindrical, as shown in FIG.
- the convex portion to be the locking portion 3 b of the piece 3 a engages with the concave portion to be the locking portion 1 e of the nipple 1, and the divided piece 3 a is locked immovably in the axial direction to the nipple 1.
- FIG. 3 (e) when the bolt of the fastening means 3c is inserted into the through hole 3e of each divided piece 3a and screwed in, the solid line and FIG.
- the divided pieces 3a move toward each other in the radial direction, whereby the elastic packing 2 is compressed in the radial direction to reduce its diameter.
- the notch recess 4a is formed on the outer peripheral surface 2b of the elastic packing 2 along the entire length in the axial direction along the grooves 2a, so that an excess of the packing is generated along with the diameter reduction deformation of the elastic packing 2.
- the excess of the packing does not fit into the notch 4a and does not protrude to the joint 3f of the two divided pieces 3a.
- the holder 3 is tightened in the radial direction by the divided pieces 3a.
- the pressing projection 2e of the elastic packing 2 pushes the hose H toward the concave portion between the bulging portion 1d and the chevron convex portion 1g, and the inner peripheral surface H1 of the hose H is caught on the step portion from the concave portion to the chevron convex portion 1g Since it becomes difficult to come off, there is also an advantage that the hose H can be made difficult to come off in a tightened state.
- a plurality of ridges 4 b and grooves 4 c extending in the circumferential direction are alternately formed in the axial direction only on the outer peripheral surface 2 b of the elastic packing 2.
- the configuration in which the friction portion 4d is provided is different from that of the first embodiment shown in FIGS. 1 to 3, and the other configuration is the same as that of the first embodiment shown in FIGS.
- low friction portions 4 d in which a plurality of ridges 4 b and concave grooves 4 c are alternately formed in the axial direction are arranged over the entire axial direction of the elastic packing 2.
- the shape 4d is formed in a sawtooth shape in cross section.
- a low friction portion 4d in which a plurality of protrusions 4b and a plurality of grooves 4c are alternately formed in the axial direction is formed on the tapered surface 3d which is the inner peripheral surface of the holder 3. It is also possible to form the concave groove 4c in a concavo-convex shape different from the sawtooth shape in cross section.
- a plurality of ridges 4b and grooves 4c extending in the circumferential direction are alternately formed in the axial direction on either or both of the outer peripheral surface 2b of the elastic packing 2 and the tapered surface 3d to be the inner peripheral surface of the holder 3.
- the low friction portion 4d is provided.
- by arranging a plurality of ridges 4b and grooves 4c extending in the circumferential direction along the outer peripheral surface 2b of the elastic packing 2 alternately in the axial direction only the tips of the ridges 4b are divided pieces 3a.
- an annular recess 4 e extending in a band shape in the circumferential direction is directed only toward the axial center crossing the circumferential direction only on the outer peripheral surface 2 b of the elastic packing 2.
- a configuration in which the hose is formed to be gradually deeper and a hose having a smooth outer peripheral surface H2 is connected as the hose H is the embodiment 1 shown in FIG. 1 to FIG. 3 or the embodiment 2 shown in FIG. Is different from that of the first embodiment shown in FIG. 1 to FIG. 3 or the second embodiment shown in FIG. 4 and FIG.
- annular recesses 4e are arranged on the outer peripheral surface 2b of the elastic packing 2 at predetermined intervals, and the respective annular recesses 4e are recessed in an arc shape in cross section.
- an annular recess 4e is formed in the tapered surface 3d which is the inner peripheral surface of the holder 3, or an arbitrary position of the tapered surface 3d which is the outer peripheral surface 2b of the elastic packing 2 or the inner peripheral surface of the holder 3. It is also possible to arrange only one annular recess 4e or to recess the annular recess 4e in another shape such as a substantially V-shaped cross section.
- the low friction portion 4d in which the plurality of protrusions 4b and the plurality of recessed grooves 4c are alternately arranged in the axial direction is formed between the plurality of annular recesses 4e arranged in the outer peripheral surface 2b of the elastic packing 2
- the pressing projection 2e is formed on the inner peripheral surface 2c corresponding to a part or all of the low friction parts 4d, and the annular packing 1c of the nipple 1, the flat part 1f, the bulging part 1d and the chevron convex part 1g It is formed so as to face a place where pressing is required, such as a recess formed between the two.
- the outer peripheral surface 2b of the elastic packing 2 initially excludes the annular recess 4e.
- the clamping operation of the clamping means 3c that is, the clamping operation of the clamping means 3c by the rotation operation of the tool is light, and the diameter reduction deformation of the elastic packing 2 thereafter causes the annular recess 4e.
- the tightening operation of the tightening means 3c gradually becomes heavy. Accordingly, there is an advantage that the tightening operation by the holder 3 can be controlled so as to be gradually heavier than the embodiment 1 shown in FIGS. 1 to 3 and the embodiment 2 shown in FIGS. 4 and 5.
- the pressing projection 2e of the elastic packing 2 When the pressing projection 2e of the elastic packing 2 is disposed so as to face the recess between the bulging portion 1d and the chevron portion 1g as shown in the illustrated example, the divided pieces 3a of the holder 3
- the pressure projection 2e of the elastic packing 2 presses the hose H by clamping in the radial direction by the pressure direction and pushes it into the recess between the bulging portion 1d and the chevron convex portion 1g, and the inner peripheral surface H1 of the hose H from the recess
- the hose H can be made difficult to be pulled off in a tightened state since the step portion leading to the chevron convex portion 1g becomes difficult to slip off in the direction of withdrawal opposite to the hose insertion direction.
- the elastic packing 2 is formed between the plurality of peripheral grooves 1b on the inner peripheral surface 2c.
- the hose H is partially bent between the facing concave portion 1m and the pressing projection 2e, and the inner circumferential surface H1 and the outer circumferential surface H2 of the hose H are closely attached to the concave portion 1m and the pressing projection 2e respectively. To prevent the hose H from coming off.
- the elastic packing 2 is formed into a cylindrical body made of synthetic resin or the like so that a plurality of splits 2a are formed circumferentially at predetermined intervals in the radial direction.
- the configuration is different from that of the first embodiment shown in FIGS. 1 to 3 in that the hose H is formed so as to be elastically deformable and the hose H has a smooth outer peripheral surface H2, but the other configuration is shown in FIG.
- This embodiment is the same as the embodiment 1 shown in FIG.
- one slot 2a is formed over the entire axial length, and the other slot 2a is directed from one opening edge of the elastic packing 2 to the other opening edge. It forms partially in the direction, and a notch recess 4f for preventing biting is also formed on the outer peripheral surface 2b along the other grooves 2a. Although not shown as another example, it is also possible to partially form another slit 2a from the both opening edges of the elastic packing 2 in the axial direction.
- the fourth embodiment shown in FIGS. 8 and 9 can obtain the same function and effect as the first embodiment described above, and if it is configured as described in the second embodiment and the third embodiment described above, it is similar to those. Good effects can be obtained.
- the elastic packing 2 is provided with one slit 2a and formed so as to be elastically deformable in the radial direction.
- the present invention is not limited to this. It may be formed to be elastically deformable.
- the hose H having the helical convex-concave shape integrally formed on the outer peripheral surface H2 as the hose H is connected.
- the present invention is not limited thereto.
- the hose H in which the outer peripheral surface H2 is smooth may be connected.
- the reinforcement convex part H3 of a helical shape is formed in the outer peripheral surface H2. May be connected to a hose H having a helical uneven shape which is integrally formed.
- the notch recess 4a is formed on the outer peripheral surface 2b of the elastic packing 2
- the low friction portion 4d including the ridge 4b and the concave groove 4c is arranged on the outer peripheral surface 2b of the elastic packing 2.
- the annular recess 4e is formed on the outer peripheral surface 2b of the elastic packing 2.
- the notch recess 4a is formed on the tapered surface 3d of the holder 3, or the protrusion 4b and the recess are formed.
- a low friction portion 4d made of 4c may be disposed, or an annular recess 4e may be formed.
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Abstract
Description
詳しくは、ニップルと円筒状の弾性パッキンとホルダーを備えたホース継手に関する。
ホース外周面が螺旋凹凸形状の樹脂製ホースを装着する場合の組み立ては、まずホース端部にニップルを円盤状突起部まで挿入し、次に弾性パッキン端をホース外周面の螺旋状凹凸形状にそってはめ込みながら1周巻き付け、最後に半割りのホルダーの一方端の突起部をニップルの円盤状突起部の外に位置するように弾性パッキンの上からはめ込み、残りの半割りのホルダーを前記ホルダーに合わせて反対側からはめ込んで、ボルト・ナットを六角棒L型レンチで締めて固定している。
そこで、ホルダーの内周面でホース抜け方向の端部に突起部が形成され、該突起部に弾性パッキンの同方向端面を突き当てることで、弾性パッキンとホルダーの位置ズレを防止している。
そのためには、突起部の高さ寸法を弾性パッキンの厚さ寸法とほぼ同じにすることが好適である。
しかし、ホース外周面が螺旋凹凸形状のホースを装着する場合には、特許文献1の図6に示されるように、ホース外周面の螺旋凹凸形状よりも外側だけしか突起部を配置できず、それにより、弾性パッキンの端面において外周部分のみが該突起部に突き当たる構造となってしまった。
このような部分接触では、ホースと共に弾性パッキンが引っ張られると、該弾性パッキンの端面において、前記突起部に突き当たる外周部分のみが圧縮変形すると同時に、その他の内周部分はホースと共に引き出されて突起部の先端を乗り越えるように変形するため、該弾性パッキンの端面が断裂してホースがニップルから抜けるおそれがあるという問題があった。
さらに、ホース外周面がフラット形状のホースを装着する場合には、特許文献1の図7に示されるように、前記突起部の高さ寸法が弾性パッキンの厚さ寸法とほぼ同じになるため、ホースが引っ張られても弾性パッキンとホルダーの位置ズレを防止できるが、該弾性パッキンの内周面とホースの外周面との間に位置ズレが起きてホースのみがニップルから抜けるおそれがあるという問題があった。
また、半割りのホルダーを弾性パッキンの上からそれぞれ嵌め込んでボルト・ナットにより締め付けるが、ホース締め付け前の弾性パッキンは膨張しているため、ホルダーの内周面に沿って滑り難い。
特に、弾性パッキンが例えばゴムなどの摩擦抵抗が大きい材料で形成される場合には、弾性パッキンの外周面とホルダーの内周面とが更に滑り難くなって、組み立て作業に手間がかかって作業性に劣るばかりでなく、弾性パッキンが正しく嵌め込まれていない状態で締め付けが行われると、弾性パッキンがはみ出て締め付け不良になることもあって、ホース内を通る流体漏れの原因となるという問題もあった。
その結果、ホースと共に弾性パッキンが引っ張られても、従来のもののように弾性パッキンの端面が断裂することはなく、確実にシールすることができる。
その結果、パッキンの余り分の噛み込みによる締め付け不良の発生を防止することができる。
その結果、弾性パッキンの外周面がゴムなどの摩擦抵抗が大きい材料で形成されても、組み立て作業に手間がかからず組み立ての作業性が向上するとともに、締め付け不良による流体の漏れも確実に防止できる。
それにより、特に食品工場などの衛生管理が厳しい場所で生産終了後に毎日分解掃除が行われる場合に有効である。
その結果、締め付け作業が行い易くなって組み立ての作業性が向上する。
それにより、特に食品工場などの衛生管理が厳しい場所で生産終了後に毎日分解掃除が行われる場合に有効である。
本発明の実施形態に係るホース継手Aは、図1~図9に示すように、可撓性を有するホースHの接続端部に挿入されてホースHの内周面H1と対向して設けられるニップル1と、このニップル1が挿入されたホースHの外周面H2と対向してホースHの径方向へ弾性変形可能に設けられる円筒状の弾性パッキン2と、この弾性パッキン2の外周を覆う円筒状でその径方向へ複数の分割片3aに分割形成されるホルダー3とを備えている。
ホルダー3の分割片3a同士を円筒状に連結することで、ニップル1に対しホルダー3が軸方向へ移動不能に係止され、更にホルダー3の分割片3a同士を径方向へ締め付けることにより、弾性パッキン2が縮径変形してホースHの内周面H1をニップル1の外周面1aに密着させている。
それによって、ニップル1の外周面1aに対するホースHの挿入及び取り外しの容易さを維持しつつ、周溝1bからの環状パッキン1cの位置ズレ及びはみ出しを防止することができる。
その他の例として図示しないが、ニップル1の外周面1aに周溝1b及び環状パッキン1cを軸方向へ一つだけ配置することも可能である。
さらに、図示される例では、膨出部1dを環状パッキン1cの突出高さよりも若干低く突出するように配置している。
その他の例として図示しないが、膨出部1dを環状パッキン1cの突出高さと同じか、又は環状パッキン1cの突出高さよりも若干高くなるように配置することも可能である。
また、ニップル1の外周面1aにおいて周溝1bよりもホースHの挿入方向(以下ホース挿入方向という)の奥側には、後述するホルダー3を係止するための係止部1eとして例えば凹部又は凸部などを形成している。
この平坦部1fの末端には、膨出部1dの突出端へ向け傾斜して該膨出部1dの突出高さと略同じに突出する山形凸部1gを形成することが好ましい。
また、ニップル1の先端内周面には、ニップル1の先端縁1hに向かって向けて徐々に拡径する逆テーパー面1iを形成することが好ましい。
この接続部1jの具体例としては、斯かるホース継手Aに接続する他の機器における管接続口の内周面に例えば内ネジが刻設される場合には、これと対応する外ネジを刻設し、また該管接続口の外周面に外ネジが刻設される場合には、これと対応する内ネジを刻設している。
さらに必要に応じて、ニップル1の基端側外周面には、回転操作用の滑り止め手段1kとして、例えば図1及び図3に示される例のように、工具などが係合する平面部を周方向へ適宜間隔毎に複数形成したり、その他にローレットなどの凹凸部を形成することが好ましい。
図示される例では、弾性パッキン2に一つのすり割り2aを切欠形成している。
その他の例として図示しないが、弾性パッキン2にすり割り2aを形成せず、材料のみで径方向へ弾性変形させることも可能である。
また、弾性パッキン2の外周面2bは、後述するホルダー3の内周面と対向して反挿入方向へ徐々に縮径するテーパー状に形成することが好ましい。
また、その他の例として、図6~図8に示される例のように、螺旋凹凸形状のホースHに代えて外周面H2が平滑なホースHを接続することも可能である。
これらの場合には、弾性パッキン2の内周面2cのうち、ニップル1の環状パッキン1c、平坦部1f、膨出部1dと山形凸部1gとの間に形成される凹部などの押圧が必要な個所が部分的に突出するように押圧突起2eを形成することが好ましい。
なお、それ以外に弾性パッキン2の内周面2c全体を平滑に形成することも可能である。
これら分割片3aを弾性パッキン2の外側に被せて、分割片3a同士を締め付け手段3cで径方向へ締め付けることにより、それぞれの係止部3bがニップル1の係止部1eに対して軸方向へ移動不能に係止されるとともに、各分割片3aの内周面が弾性パッキン2の外周面2bに圧接して径方向へ圧縮加圧するようにしている。
また、ホルダー3となる分割片3aの内周面には、反挿入方向に向かってニップル1の外周面1aと徐々に接近するように傾斜するテーパー面3dを形成し、このテーパー面3d及びニップル1に対して弾性パッキン2を反挿入方向へ移動自在に支持している。
ホースHの具体例としては、その透明又は不透明な外層と内層との間に中間層として、複数本か又は単数本の合成樹脂製ブレード(補強糸)が螺旋状に埋設される積層ホースや、中間層として合成樹脂製又は金属製の断面矩形などの帯状補強材と断面円形などの線状補強材を螺旋状に巻き付けて一体化した螺旋補強ホースや、例えばガラス繊維や難燃性繊維などの糸状補強材をホース外周面に編組した編組補強ホースや、金属製線材や硬質合成樹脂製線材を螺旋状に埋設した螺旋補強ホースや、単層構造の軟質合成樹脂製ホースなどが用いられる。
図1~図5に示される例では、ホースHの内周面H1を平滑に形成し、外周面H2に螺旋状の補強凸部H3が一体的に形成される螺旋凹凸形状のホースHを用いている。
図6~図9に示される例では、ホースHの内周面H1及び外周面H2が平滑なホースHを用いている。
この締め付け状態において、ホースHに反挿入方向への力が作用するなどの理由で、図1(b)などの矢印Bに示すように、ホースHと共に弾性パッキン2が反挿入方向へ移動し、ホルダー3の内周のテーパー面3dに沿って弾性パッキン2の外周面2bが反挿入方向へ位置ズレした時には、テーパー面3dによって弾性パッキン2が更に径方向へ圧縮変形され、それに伴い弾性パッキン2の内周面2cがホースHの外周面H2に更に圧着して、ニップル1との間にホースHが反挿入方向へ移動不能に挟持され、ホースHの抜けを防止することができる。
それによって、ホースHの抜けを簡単な構造で防止することができる。
平坦部1fから膨出部1dの突出端へ向け傾斜して該膨出部1dの突出高さと略同じに突出する山形凸部1gを形成した場合には、ホースHの挿入時において山形凸部1gを乗り越える際に、ホースHの内径が拡径変形し、次に拡径変形したまま膨出部1dに至るため、ニップル1に対するホースHの挿入を容易することができるという利点がある。
さらに、ニップル1の先端内周面に、ニップル1の先端縁1hに向かって向けて徐々に拡径する逆テーパー面1iを形成した場合には、逆テーパー面1iがホースHの内周面H1と連続して、ニップル1の先端縁1hの近傍に液溜りが発生することなく、流体がスムーズに流れるという利点がある。
さらに、弾性パッキン2の外周面2b及びホルダー3の内周面となるテーパー面3dのいずれか一方又は両方には、円周方向へ延びる突条4bと凹溝4cを軸方向へ交互に複数形成することで低摩擦部4dを設けることが好ましい。
また、弾性パッキン2の外周面2b及びホルダー3の内周面となるテーパー面3dのいずれか一方又は両方には、円周方向へ帯状に延びる環状凹部4eを該円周方向と交差する軸方向中央に向かって徐々に深くなるように形成することが好ましい。
次に、本発明の各実施例を図面に基づいて説明する。
その他の例として図示しないが、ホルダー3の内周面となるテーパー面3dに切欠凹部4aを形成したり、弾性パッキン2の外周面2b又はホルダー3の内周面となるテーパー面3dの任意個所に複数又は単数の切欠凹部4aを形成することも可能である。
さらに、弾性パッキン2のホース挿入方向端部には、挿入されたホースHの先端面(切断面)H4と対向する突片2fを一体形成し、この突片2fにホースHの先端面H4が突き当たるまでホースHを挿入するようにしている。
また、弾性パッキン2の内周面2cで螺旋状凹部2dが形成されない個所に押圧突起2eを、ニップル1の環状パッキン1c、平坦部1f及び膨出部1dと山形凸部1gとの間に形成される凹部など、押圧が必要な個所と対向するように形成することが好ましい。
また、ホースHとして外周面H2に螺旋状の補強凸部H3を一体的形成した螺旋凹凸形状のホースが接続されている。
先ず、図3(a)(b)に示すように、ホースHの接続端部に対し、弾性パッキン2を被せて、ホースHの螺旋状補強凸部H3に弾性パッキン2の螺旋状凹部2dを嵌合させる。
その後、図3(b)(c)に示すように、ホースHの接続端部にニップル1を挿入して、これらホースH及び弾性パッキン2とニップル1とを一体化する。
この状態で、図3(e)に示すように、各分割片3aの通孔3eに締め付け手段3cのボルトを挿入してねじ込み螺合させると、図1(b),図2の実線及び図3(f)に示すように、分割片3a同士が互いに径方向へ接近移動し、それにより、弾性パッキン2が径方向へ圧縮されて縮径変形する。
そこで、弾性パッキン2の外周面2b及びホルダー3の内周面となるテーパー面3dのいずれか一方又は両方には、ホルダー3による弾性パッキン2の縮径変形に伴って生じたパッキンの余り分を収容する切欠凹部4aを形成している。
実施例1では、弾性パッキン2の外周面2bに切欠凹部4aをすり割り2aに沿って軸方向全長に亘り形成することにより、弾性パッキン2の縮径変形に伴ってパッキンの余り分が発生しても、このパッキンの余り分が切欠凹部4a内に収まって両分割片3aの接合部3fにはみ出ることがない。
それによって、両分割片3aの接合部3fの間へのパッキンの余り分のはみ出し及び挟み込みを防止することができるという利点がある。
その他の例として図示しないが、ホルダー3の内周面となるテーパー面3dに、突条4bと凹溝4cが軸方向へ交互に複数形成される低摩擦部4dを形成したり、突条4bと凹溝4cを断面鋸歯状とは異なる凹凸形状に形成することも可能である。
この際、弾性パッキン2の外周面2bが例えばゴムなどで形成されて表面の摩擦抵抗が高い場合には、各分割片3aの内周面となるテーパー面3dに対して弾性パッキン2の外周面2bがスムーズに摺動せず、それにより弾性パッキン2を周方向へ均一に圧縮できないとともに、締め付け手段3cによる各分割片3aの締め付け作業が重くなるおそれがあった。
つまり、実施例1では、分割片3a同士を締め付け手段3cのボルトによって互いに径方向へ接近移動させても、各分割片3aの内周面となるテーパー面3dが弾性パッキン2の外周面2bに対してスムーズに摺動せず、締め付け手段3cのボルトによる各分割片3aの締め付け作業が重くなってしまった。
実施例2では、弾性パッキン2の外周面2bに沿って円周方向へ延びる突条4bと凹溝4cを軸方向へ交互に複数配置することにより、突条4bの先端のみが各分割片3aの内周面となるテーパー面3dに対し部分的に接触し、両者間の摩擦抵抗が少なくなって、弾性パッキン2の外周面2bに対し各分割片3aの内周面となるテーパー面3dが滑らかに摺動する。
それによって、図1~図3に示した実施例1よりも、弾性パッキン2を周方向へ均一に圧縮できるとともに、締め付け手段3cによる各分割片3aの締め付け作業を軽くすることができるという利点がある。
その他の例として図示しないが、ホルダー3の内周面となるテーパー面3dに環状凹部4eを形成したり、弾性パッキン2の外周面2b又はホルダー3の内周面となるテーパー面3dの任意個所に環状凹部4eを一つだけ配置したり、環状凹部4eを断面略V字形など他の形状に凹設することも可能である。
さらに、図示例では、弾性パッキン2の外周面2bにおいて複数配置される環状凹部4eの間に、複数の突条4bと凹溝4cが軸方向へ交互に複数配置される低摩擦部4dを形成し、これら低摩擦部4dうち一部又は全部の配置個所と対応する内周面2cに押圧突起2eを、ニップル1の環状パッキン1c、平坦部1f、膨出部1dと山形凸部1gとの間に形成される凹部など、押圧が必要な個所と対向するように形成している。
その他の例として図示しないが、複数配置される環状凹部4eの間に何も形成せず、平滑にすることも可能である。
それによって、図1~図3に示した実施例1や図4及び図5に示した実施例2よりも、ホルダー3による締め付け作業が徐々に重くなるように制御できるという利点がある。
その他の例として図示しないが、弾性パッキン2の両開口縁から他のすり割り2aを、軸方向へ部分的に形成することも可能である。
実施例1及び実施例2では、ホースHとして外周面H2に螺旋状の補強凸部H3を一体的形成した螺旋凹凸形状のホースHが接続される場合を示したが、これに限定されず、外周面H2が平滑なホースHを接続しても良い。
さらに、実施例3及び実施例4では、ホースHとして外周面H2を平滑にしたホースHが接続される場合を示したが、これに限定されず、外周面H2に螺旋状の補強凸部H3が一体的形成される螺旋凹凸形状のホースHを接続しても良い。
また、実施例1では、弾性パッキン2の外周面2bに切欠凹部4aを形成し、実施例2では、弾性パッキン2の外周面2bに突条4b及び凹溝4cからなる低摩擦部4dを配置し、実施例3では、弾性パッキン2の外周面2bに環状凹部4eを形成したが、これに限定されず、ホルダー3のテーパー面3dに切欠凹部4aを形成したり、突条4b及び凹溝4cからなる低摩擦部4dを配置したり、環状凹部4eを形成しても良い。
2 弾性パッキン 2b 外周面
2d 螺旋状凹部 3 ホルダー
3a 分割片 3d テーパー面
4a 切欠凹部 4b 突条
4c 凹溝 4e 環状凹部
H ホース H1 内周面
H2 外周面
Claims (4)
- ホースに挿入されて該ホースの内周面と対向して設けられるニップルと、
このニップルが挿入された前記ホースの外周面と対向して該ホースの径方向へ弾性変形可能に設けられる円筒状の弾性パッキンと、
前記弾性パッキンの外周を覆う円筒状でその径方向へ複数の分割片に分割され、これら分割片同士が円筒状に連結されることで前記ニップルに対し軸方向へ移動不能に係止させ、前記分割片同士が径方向へ締め付けられることで前記弾性パッキンを縮径変形し前記ホースの内周面を前記ニップルの外周面に密着させるホルダーとを備え、
前記弾性パッキンの外周面と対向する前記ホルダーの内周面に、前記ニップルに対する前記ホースの挿入方向とは逆の反挿入方向に向かって前記ニップルの外周面と徐々に接近するように傾斜するテーパー面を形成し、このテーパー面及び前記ニップルに対して前記弾性パッキンを前記反挿入方向へ移動自在に支持したことを特徴とするホース継手。 - 前記弾性パッキンの外周面及び前記ホルダーのテーパー面のいずれか一方又は両方に、前記ホルダーの分割片による前記弾性パッキンの縮径変形に伴って生じたパッキンの余り分を収容する切欠凹部を形成したことを特徴とする請求項1記載のホース継手。
- 前記弾性パッキンの外周面及び前記ホルダーのテーパー面のいずれか一方又は両方に、円周方向へ延びる突条と凹溝を軸方向へ交互に複数形成したことを特徴とする請求項1又は2記載のホース継手。
- 前記弾性パッキンの外周面及び前記ホルダーのテーパー面のいずれか一方又は両方に、円周方向へ帯状に延びる環状凹部を、該円周方向と交差する軸方向中央に向かって徐々に深くなるように形成したことを特徴とする請求項1、2又は3記載のホース継手。
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CN201080050785.3A CN102597593B (zh) | 2009-11-10 | 2010-10-25 | 软管连接器 |
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JP2009257412A JP4725982B2 (ja) | 2009-11-10 | 2009-11-10 | ホース継手 |
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JP (1) | JP4725982B2 (ja) |
CN (1) | CN102597593B (ja) |
MY (1) | MY168859A (ja) |
WO (1) | WO2011058871A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102012007723A1 (de) * | 2012-02-02 | 2013-08-08 | Rattay Metallschlauch Und Kompensatorentechnik Gmbh | Dampfschlauch |
Families Citing this family (12)
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GB2495935A (en) * | 2011-10-25 | 2013-05-01 | Watson Marlow Ltd | Peristaltic pump with tube end fitting |
US9470351B2 (en) | 2013-03-11 | 2016-10-18 | Hanon Systems | Crimp fitting having reversed barbs |
JP2015052344A (ja) * | 2013-09-06 | 2015-03-19 | 本田技研工業株式会社 | ホース取付構造 |
JP5953586B2 (ja) * | 2014-04-11 | 2016-07-20 | 株式会社トヨックス | 管継手 |
JP6488454B2 (ja) * | 2014-07-25 | 2019-03-27 | 丸一株式会社 | 管体の接続構造及び管体の接続方法 |
CN108547346A (zh) * | 2018-05-09 | 2018-09-18 | 江苏爱索新材料科技有限公司 | 一种地下水开采用软管悬吊式抽水系统及其安装方法 |
JP6798713B2 (ja) * | 2019-02-12 | 2020-12-09 | 株式会社トヨックス | 管継手 |
JP7345823B2 (ja) * | 2019-06-19 | 2023-09-19 | 株式会社ニチリン | パイプと継手との接続構造 |
CN112628505B (zh) * | 2019-09-24 | 2022-08-30 | 中国石油天然气股份有限公司 | 连接卡子 |
WO2021220457A1 (ja) * | 2020-04-30 | 2021-11-04 | 株式会社トヨックス | 管継手用スリーブ及び該管継手用スリーブを備えた管継手 |
CN113775836B (zh) * | 2020-06-10 | 2023-10-13 | 约克广州空调冷冻设备有限公司 | 接头 |
CN112049997A (zh) * | 2020-09-16 | 2020-12-08 | 常州市凯平机械有限公司 | 一种高压油管接头总成 |
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- 2009-11-10 JP JP2009257412A patent/JP4725982B2/ja active Active
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- 2010-10-25 CN CN201080050785.3A patent/CN102597593B/zh active Active
- 2010-10-25 MY MYPI2012700263A patent/MY168859A/en unknown
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DE102012007723A1 (de) * | 2012-02-02 | 2013-08-08 | Rattay Metallschlauch Und Kompensatorentechnik Gmbh | Dampfschlauch |
DE102012007723B4 (de) * | 2012-02-02 | 2014-12-24 | Rattay Metallschlauch Und Kompensatorentechnik Gmbh | Dampfschlauch |
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JP4725982B2 (ja) | 2011-07-13 |
CN102597593B (zh) | 2014-04-30 |
JP2011102605A (ja) | 2011-05-26 |
MY168859A (en) | 2018-12-04 |
CN102597593A (zh) | 2012-07-18 |
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