Pipe joints or couplings – Essential catch – Resilient ring
Patent
1988-10-03
1992-05-12
Arola, Dave W.
Pipe joints or couplings
Essential catch
Resilient ring
285356, F16L 2106
Patent
active
051120895
DESCRIPTION:
BRIEF SUMMARY
The present invention has for an object, a rapid assembly connector for hydraulic lines or pipes, including a female element integral with a connector piece and a male element fixed to a connector tube, and including an 0 ring seal and a locking means.
It concerns a connector of the type whose two elements can be assembled by a robot, that is without having to make a movement of translation accompanied by a force to assure latching, and later a force in a reverse direction for controlling the latching.
One knows of connectors of the type defined above, composed of a male element and a female element, including cylindrical parts adapted to slide, and conical parts and shoulders adapted to cooperate for the same axial displacement to produce deformation of the joint and latching of the locking means.
These connectors are usually provided to operate at low pressure and are not suitable for pressures corresponding to about one or several hundreds of bars.
The invention relates thus to a high pressure hydraulic connector whose assembly is effected in a single movement of translation and which is fully disconnectable.
An hydraulic connector according to the invention includes a female element integral with a connector piece, and a male element fixed to a connector tube and comprising an 0 ring seal and a locking means; the male element and the female element comprising the cylindrical parts adapted to slide, and conical parts and shoulders adapted to cooperate for the same axial displacement to produce deformation of the seal joint and latching of the locking means.
It is characterized by the disconnectable locking means, composed of an elastic retaining ring or a pin confined by the grooves and the toric supports or the bores of the male and female elements, after the application of the high pressure.
Preferably, the toric seal is confined between three surfaces, the first appurtenant on the connector tube, the second on the female element, and the third on the male element, the free surface of the joint being subjected in operation to the high pressure.
The first three embodiments apply in the case where the conduits of the connectors are aligned. A fourth embodiment in the case where the conduits are perpendicular.
According to the first three embodiments the female element comprises a conical portion adapted to cooperate with a shoulder of the male element for engaging the toric joint in a cylindrical portion of the female element whose diameter is less than the nominal diameter of the toric joint.
Preferably, in operation, the toric seal is compressed at its inner periphery by the connecter tube, at its outer periphery by the cylindrical portion of the female element, and is pressed by the high pressure onto the shoulder of the male element.
According to the fourth embodiment, the lock is composed of a pin allowing the straight parts to be disposed perpendicular to each other and engages in apertures of the male and female elements
One will describe hereafter, as non limiting examples, various embodiments according to the invention, with reference to the accompanying drawings, in which:
FIG. 1 shows in axial section the two male and female connector elements of a first embodiment of the invention;
FIGS. 2 to 5 the assembling of the connector elements of FIG. 1 with the different steps of this assembling
FIGS. 6 to 9 are views similar to FIGS. 2 to 5 of a second embodiment;
FIG. 10 is a view similar to FIG. 1 of a third embodiment;
FIG. 11 shows the connector of FIG. 10 assembled;
FIG. 12 shows a fourth embodiment in section, along XII--XII of FIG. 13; and
FIG. 13 is a view in transverse section along XIII-XIII of FIG. 12.
FIG. 1 shows the body 1 of an hydraulic device; this body, which constitutes the female element of the connector and is made, for example, by molding, presents a cylindrical boss 2 with an internal screw thread 3. A hollow shoulder screw 4 has a head in the form of a hexagon which clamps against the end face of the boss; this screw presents a cylindrical bore 6 which has a toric groove or
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patent: 4193616 (1980-03-01), Sarson et al.
patent: 4294473 (1981-10-01), Ekman
patent: 4621843 (1986-11-01), Straub
patent: 4725081 (1988-02-01), Bauer
Arola Dave W.
Automobiles Citroen
Automobiles Peugeot
Chun Heather
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