US20090033091A1 - Quick connector - Google Patents
Quick connector Download PDFInfo
- Publication number
- US20090033091A1 US20090033091A1 US11/830,699 US83069907A US2009033091A1 US 20090033091 A1 US20090033091 A1 US 20090033091A1 US 83069907 A US83069907 A US 83069907A US 2009033091 A1 US2009033091 A1 US 2009033091A1
- Authority
- US
- United States
- Prior art keywords
- constrictor
- petals
- plastic tube
- hole
- restricting ring
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
- F16L37/0925—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with rings which bite into the wall of the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
- F16L37/0927—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector the wedge element being axially displaceable for releasing the coupling
Definitions
- This invention relates to a quick connector, particularly to one easy to operate for separating a plastic tube processed, with the outer surface of the plastic tube not scarred or hurt.
- a first conventional quick connector shown in FIG. 1 for connecting plastic tubes used for RO percolating devices, includes a body 1 , and a constricting set 2 .
- the body 1 has a central through hole 10 for receiving a plastic tube that is used for liquid to flow through.
- the constricting set 2 is deposited in the central through hole 10 of the body 1 , provided with a constrictor 20 having a center hole for a plastic tube to pass through, an inlet 200 of a large diameter and an exit 202 of a small diameter.
- the inlet 200 has a plurality of petals 202 spaced apart equidistantly on its annular wall, and the exit 201 also has a plurality of petals spaced apart equidistantly on its annular wall.
- the dimensions of the petals 202 is larger than that of the petals 203 that are a little sloped inward so as to constrict the surface of a plastic tube to be connected.
- a press button 22 is provided for pushing open the petals 202 of the inlet 200 for connecting or disconnecting a tube.
- a bushing 21 is provided to fit in the central through hole 10 and then welded together with the body by means of high frequency processing for preventing the constrictor from loosing out.
- the bushing 21 is provided with a central cone-shaped hole 210 for the press button 22 to sit therein.
- the press button 22 has a conical circumference 220 in the lower portion, and a cylindrical circumference 221 on the conical circumference 220 with a connecting edge 222 formed between the cylindrical and the conical circumference 220 and 221 . Therefore, when the compress button 22 is forced to fit in the hole 210 , the connecting edge 222 is stopped by a front circumference of the bushing 21 to let the compress button 22 stabilized in place.
- the compress button 22 has a large flange 223 at the upper end to locate at an outer side of the body 1 so as to easily press the compress button 22 , and a central through hole 224 for a plastic tube to fit in.
- this first conventional connector has the constrictor 2 made of metal, resulting in high cost, and their components are rather complicated, having a large dimensions not profitable, in addition to a flaw of potentially hurting the surface of a plastic tube connected. Further, replacing a tube is not convenient, often forced to press tightly the compress button, very inconvenient in operation.
- a second conventional quick connector shown in FIGS. 2 , 3 and 4 includes a body 3 A and a constrictor 3 .
- the body 3 has a tapered central hole 3 A 0 , and a constrictor hole 3 A 1 formed in an upper portion of the body 3 A on the tapered central hole 3 A 0 with an annular straight vertical wall for an O-shaped ring 3 A 2 and then the constrictor 3 to fit therein.
- the constrictor 3 is made integral, having a large circumference 30 and plural petals 31 formed at the circumference 30 in order to constrict a plastic tube 11 . Further, the constrictor 3 is provided with an engage member 32 made of metal.
- the second conventional connector has the following disadvantages.
- a quick connector disclosed in a U.S. Pat. No. 5,230,539 includes a body 11 , a sleeve 30 at one side of the body 11 , as shown in FIGS. 1-6 . If the body 11 is combined with the sleeve 30 by means of high frequency or supersonic process, it is the same structure as the first conventional quick connector mentioned above.
- a collect 40 is provided with an intermediate boss portion 42 and a frusto-conical outer surface 45 , which pushes an O-shaped ring 50 .
- the frusto-conical surface is provided with teeth 46 in an inner surface, and the teeth 46 clamp the surface of a plastic tube 60 .
- the flaw of this connector is that the plastic tube 60 can only be stabilized by the frusto-conical outer surface 45 , by the teeth. 46 clamping the surface of the plastic tube 60 . So replacing a plastic tube is very troublesome.
- the invention has been devised to offer a quick connector easily assembled and simple in operation.
- the quick connector in the invention is composed of a body, a restricting ring and a constrictor, having the following advantages.
- FIG. 1 is an exploded perspective view of a first conventional quick connector
- FIG. 2 is a front view of a second conventional quick connector
- FIG. 3 is a cross-sectional view of the second conventional quick connector
- FIG. 4 is a cross-sectional view of the second conventional quick connector connected with a plastic tube
- FIG. 5 is an exploded perspective view of a quick connector in the present invention.
- FIG. 6 is a perspective view of the quick connector in the present invention.
- FIG. 7 is a cross-sectional view of the quick connector in the present invention.
- FIG. 8 is a cross-sectional view of the quick connector connected with a plastic tube in the present invention.
- FIG. 9 is a cross-sectional view of the quick connector connected with a plastic tube to be pulled out in the present invention.
- a preferred embodiment of a quick connector in the present invention includes a body 4 , a restricting ring 6 and a constrictor 7 as main components.
- the body 4 is provided with male threads 40 in a lower portion, a central through hole 41 for liquid to flow through, a constrictor groove 42 formed in the through hole 41 , an O-shaped ring 43 fitted in an innermost location in the constrictor groove 42 for preventing leakage and loosening a plastic tube as well, plural clamping petals 44 extending up from an upper end and spaced apart equidistantly.
- the clamping petals 44 respectively have an outer sloped surface 440 and an inner clamping surface 441 .
- the restricting ring 6 has an inner circumference 60 defined by a center hole 64 and an outer circumference 61 , an annular wall 62 defined between the inner circumference 60 and the outer annular surface 61 , plural holes 63 formed spaced apart equidistantly in the annular wall 62 as shown in FIG. 7 . Then the clamping petals 44 can pass upward through the plural holes 63 , with the inner surface 441 contacting tightly with an inner contacting surface 610 of the restricting ring 6 .
- the body 4 and the restricting ring 6 are combined together in a very convenient way, compared with the conventional quick connectors mentioned above.
- the O-shaped ring 43 is constrained in the constrictor groove 42 at the same time, and the restricting ring 6 has a center hole with a front sloped surface 600 and a rear sloped surface 601 .
- the constrictor 7 is provided with plural elastic petals 70 formed spaced apart equidistantly in a lower portion in an annular shape, and the petals 70 can move outward and inward, respectively having a front outer surface 71 with a pointed end 710 and an inner clamping member 711 . Then the constrictor 70 is inserted in the constrictor groove 42 after passing through the center hole 64 of the restricting ring 6 , with the petals 70 easily moving through the center hole 64 owing to the front sloped surface 600 and then prevented by the rear sloped surface 601 from moving outward.
- the constrictor 7 is further provided with a center hole 72 for a plastic tube to fit through, as shown in FIGS. 8 and 9 .
- the inner clamping surface 711 has the same curve as the surface of a plastic tube so as to closely contact with the surface of the plastic tube so that the plastic tube can hardly be pulled out. As the inner clamping surface 711 does not hurt the surface of a plastic tube 5 , which is then possible to be used repeatedly.
- the front outer surface 71 presses the rear sloped surface 601 of the inner circumference 60 of he restricting ring 6 , letting the front outer surface 71 more tightly clamp the plastic tube 5 , which is then not easily pulled out.
Abstract
Description
- 1. Field of the Invention
- This invention relates to a quick connector, particularly to one easy to operate for separating a plastic tube processed, with the outer surface of the plastic tube not scarred or hurt.
- 2. Description of the Prior Art
- A first conventional quick connector shown in
FIG. 1 , for connecting plastic tubes used for RO percolating devices, includes a body 1, and a constricting set 2. - The body 1 has a central through
hole 10 for receiving a plastic tube that is used for liquid to flow through. - The constricting set 2 is deposited in the central through
hole 10 of the body 1, provided with aconstrictor 20 having a center hole for a plastic tube to pass through, aninlet 200 of a large diameter and anexit 202 of a small diameter. Theinlet 200 has a plurality ofpetals 202 spaced apart equidistantly on its annular wall, and theexit 201 also has a plurality of petals spaced apart equidistantly on its annular wall. The dimensions of thepetals 202 is larger than that of thepetals 203 that are a little sloped inward so as to constrict the surface of a plastic tube to be connected. Further, apress button 22 is provided for pushing open thepetals 202 of theinlet 200 for connecting or disconnecting a tube. Further, abushing 21 is provided to fit in the central throughhole 10 and then welded together with the body by means of high frequency processing for preventing the constrictor from loosing out. Thebushing 21 is provided with a central cone-shaped hole 210 for thepress button 22 to sit therein. Thepress button 22 has aconical circumference 220 in the lower portion, and acylindrical circumference 221 on theconical circumference 220 with aconnecting edge 222 formed between the cylindrical and theconical circumference compress button 22 is forced to fit in the hole 210, the connectingedge 222 is stopped by a front circumference of thebushing 21 to let thecompress button 22 stabilized in place. Further, thecompress button 22 has alarge flange 223 at the upper end to locate at an outer side of the body 1 so as to easily press thecompress button 22, and a central throughhole 224 for a plastic tube to fit in. - However, this first conventional connector has the constrictor 2 made of metal, resulting in high cost, and their components are rather complicated, having a large dimensions not profitable, in addition to a flaw of potentially hurting the surface of a plastic tube connected. Further, replacing a tube is not convenient, often forced to press tightly the compress button, very inconvenient in operation.
- A second conventional quick connector shown in
FIGS. 2 , 3 and 4 includes abody 3A and aconstrictor 3. Thebody 3 has a tapered central hole 3A0, and a constrictor hole 3A1 formed in an upper portion of thebody 3A on the tapered central hole 3A0 with an annular straight vertical wall for an O-shaped ring 3A2 and then theconstrictor 3 to fit therein. Theconstrictor 3 is made integral, having alarge circumference 30 andplural petals 31 formed at thecircumference 30 in order to constrict aplastic tube 11. Further, theconstrictor 3 is provided with an engagemember 32 made of metal. - However, the second conventional connector has the following disadvantages.
-
- 1. The metal engage
member 32 has to be placed in a mold before theconstrictor 3 is formed by means of injecting molding process, taking much time and costing much. - 2. The metal engage
member 32 has to be combined perfectly, or resulting in unqualified products. - 3. The metal engage
member 32 clamps a plastic tube as shown inFIG. 2 , and although fourpetals 31 push against the surface of theplastic tube 11, actually only four points contact the tube surface, so the tube is easily pulled out by a little force, and if worse, theconstrictor 3 may be pulled out together with the tube. - 4. The metal engage member easily sticks into a plastic tube, so the tube becomes difficult to be pulled out as shown in
FIG. 4 , resulting in impossible reuse of the plastic tube, in addition to leaking of liquid. - 5. If the constrictor catches a plastic tube for long, without any pulling off, the engage
member 32 has bit in the plastic tube, letting the tube impossible to be pulled out. - 6. After the engage member clamps tightly a plastic tube, even if the constrictor is pushed inward, forcing the O-shaped ring 3A2 to disfigure, the plastic tube cannot quickly be pulled out.
- 7. As shown in
FIG. 4 , in operation, one hand has to press the constrictor, and the other hand has to pull the plastic tube, needing much force, not easily pulling out the tube.
- 1. The metal engage
- Next, a quick connector disclosed in a U.S. Pat. No. 5,230,539 includes a
body 11, asleeve 30 at one side of thebody 11, as shown inFIGS. 1-6 . If thebody 11 is combined with thesleeve 30 by means of high frequency or supersonic process, it is the same structure as the first conventional quick connector mentioned above. As shown inFIG. 3 , acollect 40 is provided with anintermediate boss portion 42 and a frusto-conical outer surface 45, which pushes an O-shaped ring 50. The frusto-conical surface is provided with teeth 46 in an inner surface, and the teeth 46 clamp the surface of aplastic tube 60. The flaw of this connector is that theplastic tube 60 can only be stabilized by the frusto-conical outer surface 45, by the teeth. 46 clamping the surface of theplastic tube 60. So replacing a plastic tube is very troublesome. - The invention has been devised to offer a quick connector easily assembled and simple in operation.
- The quick connector in the invention is composed of a body, a restricting ring and a constrictor, having the following advantages.
-
- 1. The body has a central through hole for liquid to flow through, a constrictor groove formed in the through hole for receiving an O-shaped ring and the constrictor, and plural petals extending upward from an upper end.
- 2. The restricting ring has a center hole, an inner circumference defined by the center hole and an outer circumference, and an annular wall defined by the inner and the outer circumference. Further, plural holes are formed in the annular wall, spaced apart equidistantly. Then the petals of the body fit in the holes of the restricting ring to combine the body with the restricting ring.
- 3. The constrictor has plural elastic petals in a lower portion to fit in the center hole of the restricting ring for clamping a plastic tube tightly, and the movement of the constrictor is restricted by the inner surface of the center hole of the restricting ring, clamping a plastic tube more tightly in case of pulled outward gradually.
- This invention will be better understood by referring to the accompanying drawings, wherein:
-
FIG. 1 is an exploded perspective view of a first conventional quick connector; -
FIG. 2 is a front view of a second conventional quick connector; -
FIG. 3 is a cross-sectional view of the second conventional quick connector; -
FIG. 4 is a cross-sectional view of the second conventional quick connector connected with a plastic tube; -
FIG. 5 is an exploded perspective view of a quick connector in the present invention; -
FIG. 6 is a perspective view of the quick connector in the present invention; -
FIG. 7 is a cross-sectional view of the quick connector in the present invention; -
FIG. 8 is a cross-sectional view of the quick connector connected with a plastic tube in the present invention; and, -
FIG. 9 is a cross-sectional view of the quick connector connected with a plastic tube to be pulled out in the present invention. - A preferred embodiment of a quick connector in the present invention, as shown in
FIGS. 5 and 6 , includes abody 4, a restrictingring 6 and aconstrictor 7 as main components. - The
body 4 is provided withmale threads 40 in a lower portion, a central throughhole 41 for liquid to flow through, aconstrictor groove 42 formed in the throughhole 41, an O-shapedring 43 fitted in an innermost location in theconstrictor groove 42 for preventing leakage and loosening a plastic tube as well, plural clampingpetals 44 extending up from an upper end and spaced apart equidistantly. The clampingpetals 44 respectively have an outersloped surface 440 and aninner clamping surface 441. - The restricting
ring 6 has aninner circumference 60 defined by acenter hole 64 and anouter circumference 61, anannular wall 62 defined between theinner circumference 60 and the outerannular surface 61,plural holes 63 formed spaced apart equidistantly in theannular wall 62 as shown inFIG. 7 . Then the clampingpetals 44 can pass upward through theplural holes 63, with theinner surface 441 contacting tightly with an inner contactingsurface 610 of the restrictingring 6. Thus thebody 4 and the restrictingring 6 are combined together in a very convenient way, compared with the conventional quick connectors mentioned above. Moreover, the O-shapedring 43 is constrained in theconstrictor groove 42 at the same time, and the restrictingring 6 has a center hole with a frontsloped surface 600 and a rear slopedsurface 601. - The
constrictor 7 is provided with pluralelastic petals 70 formed spaced apart equidistantly in a lower portion in an annular shape, and thepetals 70 can move outward and inward, respectively having a frontouter surface 71 with apointed end 710 and aninner clamping member 711. Then theconstrictor 70 is inserted in theconstrictor groove 42 after passing through thecenter hole 64 of the restrictingring 6, with thepetals 70 easily moving through thecenter hole 64 owing to the front slopedsurface 600 and then prevented by the rear slopedsurface 601 from moving outward. Theconstrictor 7 is further provided with acenter hole 72 for a plastic tube to fit through, as shown inFIGS. 8 and 9 . - Next, when one end of a
plastic tube 5 is inserted in thecenter hole 72 of theconstrictor 7 to reach a certain point, as shown inFIG. 8 , that end of theplastic tube 5 practically pushes a proper location of the central throughhole 41 of thebody 4, with the pointed end of thepetals 70 being in contact with the O-shapedring 43. At this time, the rear slopedsurface 601 of theinner circumference 60 of the restrictingring 6 forcefully presses the frontouter surface 71 of thepetals 70, letting theinner clamping member 711 of the front outer surface tightly clamp the surface of theplastic tube 5. Moreover, theinner clamping surface 711 has the same curve as the surface of a plastic tube so as to closely contact with the surface of the plastic tube so that the plastic tube can hardly be pulled out. As theinner clamping surface 711 does not hurt the surface of aplastic tube 5, which is then possible to be used repeatedly. Once aplastic tube 5 is connected, the frontouter surface 71 presses the rear slopedsurface 601 of theinner circumference 60 of he restrictingring 6, letting the frontouter surface 71 more tightly clamp theplastic tube 5, which is then not easily pulled out. - In case the
plastic tube 5 is wanted to be replaced with a new one, a person grips theplastic tube 4 with one hand, and then pushes theconstrictor 7 inward, forcing thepointed end 710 to move outward along O-shapedring 43, as shown inFIG. 9 . Then thefront clamping surface 711 frees theplastic tube 5. Thus the quick connector in the invention is very simple to operate. - While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/830,699 US7490865B1 (en) | 2007-07-30 | 2007-07-30 | Quick connector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US11/830,699 US7490865B1 (en) | 2007-07-30 | 2007-07-30 | Quick connector |
Publications (2)
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US20090033091A1 true US20090033091A1 (en) | 2009-02-05 |
US7490865B1 US7490865B1 (en) | 2009-02-17 |
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US11/830,699 Active 2027-09-09 US7490865B1 (en) | 2007-07-30 | 2007-07-30 | Quick connector |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2216578A1 (en) * | 2009-02-06 | 2010-08-11 | Tzu-Liang Tsai | Quick connector |
US20130008539A1 (en) * | 2010-03-03 | 2013-01-10 | Toyo Seikan Kaisha, Ltd. | Coupler |
WO2019207321A1 (en) * | 2018-04-27 | 2019-10-31 | John Guest International Limited | A collet for locking a tube in a coupling body |
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DE102006010316A1 (en) * | 2006-03-07 | 2007-09-13 | Karl Storz Gmbh & Co. Kg | clutch mechanism |
US10695520B2 (en) * | 2011-04-22 | 2020-06-30 | Inogen, Inc. | Gas concentrator with removable cartridge adsorbent beds |
US9592360B2 (en) * | 2011-04-22 | 2017-03-14 | Inogen, Inc. | Gas concentrator with removable cartridge adsorbent beds |
GB201317990D0 (en) * | 2013-10-11 | 2013-11-27 | Guest John Int Ltd | A conncetor |
JP6825995B2 (en) * | 2017-06-02 | 2021-02-03 | 株式会社ブリヂストン | Manufacturing method for injection molding dies, resin members, and resin products |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2216578A1 (en) * | 2009-02-06 | 2010-08-11 | Tzu-Liang Tsai | Quick connector |
US20130008539A1 (en) * | 2010-03-03 | 2013-01-10 | Toyo Seikan Kaisha, Ltd. | Coupler |
US8851115B2 (en) * | 2010-03-03 | 2014-10-07 | Toyo Seikan Kaisha, Ltd. | Coupler |
WO2019207321A1 (en) * | 2018-04-27 | 2019-10-31 | John Guest International Limited | A collet for locking a tube in a coupling body |
Also Published As
Publication number | Publication date |
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US7490865B1 (en) | 2009-02-17 |
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