Pipe joints or couplings – Movable jaw
Patent
1998-12-11
2000-07-18
Browne, Lynne H.
Pipe joints or couplings
Movable jaw
285319, 285322, 285331, F16L 3322
Patent
active
060896205
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
The object of the invention is a quick connection and disconnection device for electric pumps and tubes of automobile vehicle windscreen washer installations. In particular, the device of the invention is applicable to the outlet nozzle of windscreen washer electric pumps and any other of the elements habitually used in automobile vehicle windscreen washer installations such as attachment and tap-off accessories, jets, etc.
BACKGROUND OF THE INVENTION
As is known, washing of the glazed surfaces of automobile vehicles is carried out using factory-fitted means which generally include a cleaning liquid reservoir, an electric pump generally attached to said reservoir, and a plurality of flexible tubes which link said electric pump with jets which project the cleaning liquid against the glazed surfaces at the pressure and flow required in each particular case.
The electric pump essentially comprises a sucking and forcing pump made up of an forcing chamber in which is fitted a sucking and forcing turbine, with input of cleaning liquid to the forcing chamber being implemented by means of an axial sucking extension and output of cleaning liquid from said chamber being implemented through an outlet nozzle tangentially mounted with respect to same. In general, the outlet nozzle has its free end designed to receive a corresponding end of flexible tube, said design arrangement consisting in a truncated-end termination in which the larger base forms a perimetric projection, with connection under pressure of said end of tube to the outlet nozzle, in such a way that by elastic reaction of the tube material said end presses an the exterior surface of the outlet nozzle to lend the connection a certain leaktightness.
The mode of flexible tube connection described above has the following main disadvantages. The location of the electric pump and accessibility to same are frequently a considerable hindrance to implementation of connection or disconnection of the tube, which increases the cost of both the windscreen washer installation and its maintenance. Moreover, the insertion under pressure of the outlet nozzle into the tube generally calls for the use of lubricating materials such as greases applied onto the nozzle, which under certain circumstances, such as when too much of said lubricants is applied, can lead to blockage of the tube, preventing free circulation of cleaning liquid.
The situation described above with respect to connection of a flexible tube to the outlet nozzle of an electric pump is by extension entirely applicable to connection of a tube of this type to a cleaning liquid inlet or outlet nozzle of any of the elements habitually used in windscreen washer installations, such as attachment and/or tap-off elements and jets.
EXPLANATION OF THE INVENTION
A quick connection and disconnection device of new structure and operation for electric pumps and tubes of automobile vehicle windscreen washer installations is made known herein in order to provide a solution to the above-described disadvantages generally presented in connection and disconnection of flexible tubes to and from nozzles.
The quick connection and disconnection device of the invention includes a nozzle body and a connecting body coaxially mounted and permanently attached and capable of sliding longitudinally in both directions one with respect to the other, with both bodies having a respective axial passage, respective and complementary attachment means so designed that the connecting body has two working positions, a first position or disconnection position in which one end of flexible tube, traversing the axial passage of the connecting body, fits into the axial passage of the nozzle body, and a second position, or connection position, in which said end of tube is attached securely to the nozzle and connecting bodies by the action of fixing means which both bodies have respectively and in complementary fashion, while the nozzle body has leaktightness means which, once said tube end has been connected, are d
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Elvira Peralta Juan
Lopez Miguel Mota
Browne Lynne H.
Dunwoody Aaron
Fico Transpar, S.A.
Striker Michael J.
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