EP0690231A1 - Raccord rapide hermétique pour des vannes de sécurité de pneus - Google Patents

Raccord rapide hermétique pour des vannes de sécurité de pneus Download PDF

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Publication number
EP0690231A1
EP0690231A1 EP95109727A EP95109727A EP0690231A1 EP 0690231 A1 EP0690231 A1 EP 0690231A1 EP 95109727 A EP95109727 A EP 95109727A EP 95109727 A EP95109727 A EP 95109727A EP 0690231 A1 EP0690231 A1 EP 0690231A1
Authority
EP
European Patent Office
Prior art keywords
chamber
bell
bush
shaped element
valve
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.)
Withdrawn
Application number
EP95109727A
Other languages
German (de)
English (en)
Inventor
Adriano Barbieri
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.)
Barbieri Adriano - Barbieri Nadia - Barbieri Kalman dba Barbieri SNC Di Barbieri Adriano & C
Original Assignee
Barbieri Adriano - Barbieri Nadia - Barbieri Kalman dba Barbieri SNC Di Barbieri Adriano & C
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 Barbieri Adriano - Barbieri Nadia - Barbieri Kalman dba Barbieri SNC Di Barbieri Adriano & C filed Critical Barbieri Adriano - Barbieri Nadia - Barbieri Kalman dba Barbieri SNC Di Barbieri Adriano & C
Publication of EP0690231A1 publication Critical patent/EP0690231A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B33/00—Pumps actuated by muscle power, e.g. for inflating
    • F04B33/005—Pumps actuated by muscle power, e.g. for inflating specially adapted for inflating tyres of non-motorised vehicles, e.g. cycles, tricycles

Definitions

  • the present invention relates to a hermetic quick coupling for safety valves of tires, to be installed in hand pumps, motorized pumps, and pressure gauges.
  • Conventional safety valves for tires have a thin stem at their end, on the opening of the inflation duct; said stem is monolithic with the valve shutter and must be pressed mechanically in the direction in which air is introduced in order to open and allow inflation.
  • valves commercially known as Schrader valves
  • connection between the valve and the air delivery nozzle is achieved by means of couplings that entail air leaks during coupling and uncoupling; in some cases, especially when the personnel is inexperienced, these leaks can also be very large: air leakage during coupling to the pump is particularly negative when inflating small volumes at high pressure.
  • the aim of the present invention is to obviate the drawbacks of conventional devices, that is to say, to provide a hermetic quick coupling for safety valves of tires that does not entail any leakage of air during use and can be easily used even by inexperienced personnel.
  • An object of the present invention is to achieve the above-mentioned aim with a structure that is simple, relatively easy to produce, safe in use, reliable in operation, and has relatively low cost.
  • the present hermetic quick coupling for safety valves for tires characterized in that at the end of the pump body there is a tubular chamber connected to the compression cylinder of the pump through a central radial hole; a bush is hermetically and slidingly fitted inside the tubular chamber and is frontally provided with a rigidly coupled end of a bell-shaped element that forms a seat for a sealing rubber fitting together with the bush, the other end of said bell-shaped element being flexible; when the valve is manually pushed against the bush towards the inside of the chamber, said bell-shaped element is adapted to interfere with the opening of the chamber, clamp the safety valve, and tighten the rubber fitting perimetrically on the end of the valve; said bush is hermetically crossed, at the rear, by a stem that is rigidly coupled to the bottom of the chamber and is adapted to actuate the shutter of said valve when said safety valve, clamped by the bell-shaped element, enters.
  • the reference numeral 1 generally designates a hermetic quick coupling for safety valves 2 for tires according to the invention:
  • the valves 2 are of the kind commercially known as Schrader valves, are usually used for tires of cars, trucks, motorcycles, mountain bikes, or the like, and are axially provided with a stem 3 that extends from the movable shutter and must be pressed towards the inside of the valve (arrow A), to allow to open said valve;
  • the valve is provided with a thread 4 on its outer surface.
  • the reference numeral 5 designates the body of a pump
  • the reference numeral 6 designates the bottom of the compression cylinder
  • the reference numeral 7 designates the piston
  • the reference numeral 8 designates the check valve: the figures show the coupling fitted to a hand pump, but it is possible to fit the coupling also to mechanically-actuated pumps, compressors, or other devices.
  • a tubular chamber 9 is provided at the end of the body 5, and its axis lies at right angles to the body 5; said chamber is connected to the inflation hole of the pump through a central radial hole 10.
  • a bush 11 is slidingly mounted in the tubular chamber 9 and is provided with two external annular grooves 12, 13 for accommodating two toroidal sealing rings 14 and 15, conveniently of the type known as O-Ring, against the inner surface of the chamber 9: between the two annular grooves 12 and 13, the outer surface of the bush is affected by a peripheral recess 16 and is provided with at least one through hole 17.
  • a threaded end 18 of a bell-shaped element 19 is screwed onto the front end of the bush and forms, together with the bush, a seat for accommodating a profiled sealing rubber fitting 20; at the other end, the bell-shaped element 19 has longitudinal slits that form several, for example four, flexible jaws 19a; the cylindrical inner surface of the jaws 19a is affected by a threaded portion 19b, and the bell-shaped element 19 is advantageously made of a material such as plastics and in particular of the material known by the trade-name Nylon.
  • a ring 21 is screwed onto the front end of the chamber 9 and forms, at the opening, an inner rounded tooth 22 that is adapted to cooperate with a corresponding rounded external annular recess 23 of the end of the bell-shaped element to lock said bell-shaped element in the configuration in which it is locked onto the valve.
  • a bottom 24 is hermetically screwed onto the chamber 9 at the rear and is provided with an axial stem 25 that is rigidly coupled thereto and is provided with an annular slot 26 for a toroidal sealing ring 27 of the type known as O-Ring against the inner surface of the internal axial hole 28 of the bush 11; the stem 25 hermetically passes through the bush 11 and has a tapering tip 29.
  • Elastic means 30 are fitted between the bottom 24 and the bush 11 and are constituted, in this particular case, by a helical compression spring; said means are adapted to push the bush in the direction for exiting from the bell-shaped element.
  • the safety valve shown in figure 1, is manually inserted in the bell-shaped element, and its end presses against the bottom of the rubber fitting 18, producing a front seal: by continuing to press, the bell-shaped element gradually enters the chamber 9 and interferes with its opening, which pushes the jaws towards the axis of the bell-shaped element to clamp the safety valve and perimetrically tighten the rubber fitting on the end of the valve (figure 2) so as to provide a perimetric seal; by pressing further, the shutter 3 is pushed against the end of the stem 29 that opens it; at the end of the stroke, the bell-shaped element is locked, in the condition in which it lies inside the chamber 9, by the annular tooth 22, which enters the slot 23 of the bell-shaped element: in practice, the shutter 3 is opened only after the rubber fitting 18 has ensured frontal and perimetric tightness and after the jaws 19a have mechanically clamped the valve, while the annular tooth 22 and the slot 23 lock the coupling, so as to avoid, during inflation, the mutual movements between the valve and the rubber fitting
  • the bush 11 can be released manually, rather than by means of the spring 30: in this embodiment, the bush 11 extends with two curved stems 31a, 31b that pass through two corresponding curved through slots 32a, 32b of the bottom 24; the stems 31a, 31b are inserted by pressing in corresponding blind seats 33a, 33b of a cap 34 which can be released in the direction of the arrow A, preferably using the thumb of the hand that holds the pump body.
  • the reference numeral 35 designates a duct for connection to an optional pressure gauge 36.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP95109727A 1994-07-01 1995-06-22 Raccord rapide hermétique pour des vannes de sécurité de pneus Withdrawn EP0690231A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO940311 1994-07-01
ITBO940311A IT1274816B (it) 1994-07-01 1994-07-01 Attacco rapido di tenuta per valvole di sicurezza per pneumatici

Publications (1)

Publication Number Publication Date
EP0690231A1 true EP0690231A1 (fr) 1996-01-03

Family

ID=11339915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109727A Withdrawn EP0690231A1 (fr) 1994-07-01 1995-06-22 Raccord rapide hermétique pour des vannes de sécurité de pneus

Country Status (2)

Country Link
EP (1) EP0690231A1 (fr)
IT (1) IT1274816B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19654253C1 (de) * 1996-12-23 1998-03-12 Scott Wu Luftpumpe für verschiedene Arten von Ventilen
DE19721321A1 (de) * 1997-05-19 1998-12-03 Scott Wu Pumpvorrichtung mit einem Klemm-Mundstück für verschiedene Ventile
EP2770207A1 (fr) * 2013-02-26 2014-08-27 Beto Engineering and Marketing Co., Ltd. Tête de buse à commutation automatique ayant deux nez de valve et tête de buse de nez simple
DE102014110803B3 (de) * 2014-07-30 2015-11-12 Beto Engineering and Marketing Co., Ltd. Pumpendüse mit einem Abzug
DE102014110792B3 (de) * 2014-07-30 2015-11-19 Beto Engineering and Marketing Co., Ltd. Pumpendüse ohne Hebel
US20150330525A1 (en) * 2014-05-14 2015-11-19 Beto Engineering & Marketing Co., Ltd. Air valve connecting device having automatic gripping structure
US20160237995A1 (en) * 2015-02-16 2016-08-18 Clifford Currie Push On and Pull Off Schrader and Presta Valve Air Filler Pump Head
TWI560384B (fr) * 2013-05-29 2016-12-01 Beto Engineering & Marketing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE131284C (fr) *
CH306227A (de) * 1952-07-28 1955-03-31 Karl Scheffer Klute Wi Schlauchlose Luftpumpe.
DE956382C (de) * 1951-06-08 1957-01-17 Karl Scheffer Klute Inh Wilhel Schlauchlose Luftpumpe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE131284C (fr) *
DE956382C (de) * 1951-06-08 1957-01-17 Karl Scheffer Klute Inh Wilhel Schlauchlose Luftpumpe
CH306227A (de) * 1952-07-28 1955-03-31 Karl Scheffer Klute Wi Schlauchlose Luftpumpe.

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19654253C1 (de) * 1996-12-23 1998-03-12 Scott Wu Luftpumpe für verschiedene Arten von Ventilen
DE19721321A1 (de) * 1997-05-19 1998-12-03 Scott Wu Pumpvorrichtung mit einem Klemm-Mundstück für verschiedene Ventile
DE19721321C2 (de) * 1997-05-19 1999-12-02 Scott Wu Pumpvorrichtung zum Anschliessen an ein Ventil eines Fahrradreifens
EP2770207A1 (fr) * 2013-02-26 2014-08-27 Beto Engineering and Marketing Co., Ltd. Tête de buse à commutation automatique ayant deux nez de valve et tête de buse de nez simple
EP2857682A1 (fr) * 2013-02-26 2015-04-08 Beto Engineering and Marketing Co., Ltd. Tête de buse à bouche unique
TWI509173B (zh) * 2013-02-26 2015-11-21 Beto Engineering & Marketing Single mouth type nozzle and direct pressure double valve mouth automatically switch the nozzle head
TWI560384B (fr) * 2013-05-29 2016-12-01 Beto Engineering & Marketing
US20150330525A1 (en) * 2014-05-14 2015-11-19 Beto Engineering & Marketing Co., Ltd. Air valve connecting device having automatic gripping structure
DE102014110803B3 (de) * 2014-07-30 2015-11-12 Beto Engineering and Marketing Co., Ltd. Pumpendüse mit einem Abzug
DE102014110792B3 (de) * 2014-07-30 2015-11-19 Beto Engineering and Marketing Co., Ltd. Pumpendüse ohne Hebel
US20160237995A1 (en) * 2015-02-16 2016-08-18 Clifford Currie Push On and Pull Off Schrader and Presta Valve Air Filler Pump Head
US9855928B2 (en) * 2015-02-16 2018-01-02 Clifford Currie Push on and pull off Schrader and Presta valve air filler pump head

Also Published As

Publication number Publication date
IT1274816B (it) 1997-07-25
ITBO940311A1 (it) 1996-01-01
ITBO940311A0 (it) 1994-07-01

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