Quick connect/disconnect fluid coupling

• US 5,005,877 A
• Filed: 12/06/1989
• Issued: 04/09/1991
• Est. Priority Date: 12/16/1988
• Status: Expired due to Fees

• Current Assignee: Parker Enzed Limited 6 Bowden RD Mt Wellington Auckland New Zealand
• Original Assignee: Parker-Hannifin Corporation
• Inventors: Hayman, Lawrence F.
• Primary Examiner(s): Arola, Dave W.
• Application Number:
  US07/446,948
• Time in Patent Office: 489 Days
• Field of Search: 285/308, 285/315, 285/316, 285/34, 285/317
• US Class Current: 285/315
• CPC Class Codes: F16L 37/0842 by means of a ring which is split into a plurality of component parts which are held in place by means of a resilient ring member

Abstract

A quick connect/disconnect coupling for hydraulic or pneumatic conduits has a male half (4) and a female half (2) each of said halves having fluid bores therethrough. Split ring segments 7 are arranged in ring within the female coupling half and are movable therein. The ring segments are biased towards the centerline of the coupling by an elastic o-ring (9). When the coupling halves are engaged, the ring segments are positioned between a radially extending shoulder (6) on the male coupling half and a radially extending shoulder (21) on the female coupling half. In the engaged and locked position of the coupling halves, the ring segments in blocking relation with the shoulders holds the coupling halves together. The ring segments are in abutting relation with adjacent ring segments on either side when the coupling halves are in the engaged in locked position. The male coupling half includes a tubular releasing member (10) slidably mounted thereon. When the releasing member is moved in the direction of the female coupling half a tapered surface (18) of the releasing member moves the ring segments radially outward above the shoulder on the male coupling half and enables the coupling halves to be disconnected.

Claims

1. A quick connect/disconnect coupling having two engageable and disengageable haves, said halves being locked together when in engaged relation, comprising:

a male coupling half having a first fluid bore therethrough, said male coupling half having a generally cylindrical outside surface and including a first locking surface extending outward relative to a centerline of the coupling, said first locking surface extending circumferentially about said male coupling half;

a female coupling half having an opening and a second generally cylindrical fluid bore therethrough for accepting said male coupling half, said outside surface of said male coupling half extending into said opening when said halves are in engaged relation, said female coupling half including a body portion having a second locking surface extending circumferentially in said second fluid bore, said second locking surface extending inward and at an acute angle relative to the centerline of the coupling and a plane of said opening, said first and second bores in fluid communication when said coupling halves are in engagement, said body portion further including a cylindrical outer surface extending parallel of the centerline of the coupling;

a plurality of cocking bodies mounted for movement outward from the centerline of the coupling on one of said coupling halves, each of said locking bodies comprising an arcuate segment of a ring, and in the engaged position of said coupling halves each of said locking bodies engaging said first and second locking surfaces and both adjacent locking bodies in said ring; and

biasing means for biasing said ring segments toward said centerline of said coupling; and

movement means for moving said locking bodies to disengage at least one of said locking surfaces, whereby said coupling halves are enabled to be disconnected; and

wherein said movement means includes

a sleeve member mounted for movement parallel of the centerline of the coupling on said female coupling half, said sleeve member including a cylindrical portion having an inner face, said inner face of said cylindrical portion overlying and contacting said outer surface of said body portion of said female coupling half and extending circumferentially about said outer surface;

said sleeve member further including a turned-in continuous leg portion, said cylindrical portion and said leg portion of unitary, one piece construction, said leg portion extending from said cylindrical portion of said sleeve member to adjacent said outside surface of said male coupling half.

2. The coupling according to claim 1 wherein said second locking surface is a shoulder on said female coupling half and said locking bodies are movable in a direction parallel of said shoulder on said female coupling half.

3. The coupling according to claim 2 wherein said locking bodies are mounted on said female coupling half and said ring segments are five sides polygons in cross section.

4. The coupling according to claim 3 wherein said first locking surface is a shoulder extending outward of the centerline of said coupling about a periphery of said male coupling half and generally parallel of the shoulder on female coupling half, and said movement means is operable to move said locking bodies outward beyond said shoulder on said male coupling half to enable disconnection of said coupling halves.

5. The coupling according to claim 4 wherein said male coupling half includes a ramped face adjacent said shoulder whereby when said coupling halves are moved together from said disconnected position said ramped face engages said ring segments and said segments move thereon outward against the force of said biasing means to enable said shoulder on said male coupling half to pass said ring segments, and after said shoulder passes said ring segments to engage said shoulder to lock said halves in locked engagement.

6. The coupling according to claim 1 wherein said movement means comprises a releasing member mounted on said female coupling half, said releasing member including a locking body engaging surface for engaging said ring segments and moving them against the force of said biasing means whereby said coupling halves may be disconnected.

7. The coupling according to claim 6 wherein said releasing member is movable generally in a direction parallel of the centerline of said coupling, and said locking body engaging surface includes a tapered edge whereby movement of said releasing member towards said ring segments causes said releasing member to engage said segments and move them outward.

8. The coupling according to claim 7 wherein said ring segments include an outwardly tapered ring surface adjacent said releasing member whereby said tapered edge of said releasing member engages said tapered ring surface of said ring segments.

9. The coupling according to claim 7 wherein said biasing means is an elastic o-ring.