Safety type quick release connector

• US 7,926,783 B1
• Filed: 12/08/2009
• Issued: 04/19/2011
• Est. Priority Date: 12/08/2009
• Status: Expired due to Fees

• Current Assignee: Hsiu-Hsiung Liu
• Original Assignee: Hsiu-Hsiung Liu
• Inventors: Liu, Hsiu-Hsiung
• Primary Examiner(s): Fristoe, Jr.; John K
• Application Number:
  US12/654,010
• Time in Patent Office: 497 Days
• Field of Search: 251/149.1, 251/149.6, 251/149.9
• US Class Current: 251/149.9
• CPC Class Codes: F16L 37/23 by means of balls
• CPC Class Codes: F16L 37/44 with one lift valve being actuated to initiate the flow through the coupling after the two coupling parts are locked against withdrawal

Abstract

A safety type quick release connector has a body, a socket base, a sealing valve, a moving base, a pushing assembly and an outer sleeve. The body has an inlet pipe, an outlet tube and a first spring. The socket base is connected to the body and has an outer flange, multiple ball holes and multiple first balls. The sealing vale is mounted in the socket base and has at least one air inlet, an annular groove and a second spring. The moving base is connected to the sealing valve and has an outer flange, an annular lip, multiple ball holes and multiple second balls. The pushing assembly is mounted around the moving base and the sealing valve and has a pushing collar, a third spring and a seal collar. The outer sleeve is mounted around the socket base and the sealing valve between the body and the pushing assembly.

Claims

1. A safety type quick release connector comprising:

a body being hollow and having

a proximal end;

a distal end;

an inlet pipe formed on and protruding from the proximal end of the body;

an outlet tube formed on the distal end of the body, communicating with the inlet pipe and having an air chamber; and

a first spring mounted in the air chamber of the outlet tube and having two ends;

a socket base being hollow, connected to the body and having

a connecting end connected to the outlet tube;

an inserting end;

an external surface;

an outer flange formed around the inserting end of the socket base;

multiple ball holes formed through the external surface of the socket base at intervals near the outer flange and arranged in a circle around the socket base; and

multiple first balls held respectively in the ball holes in the socket base;

a sealing valve movably mounted in the socket base, abutting the first balls of the socket base and having

a closed end mounted in the air chamber of the outlet tube via the connecting end of the socket base and one of the ends of the first spring abutting the outlet tube and the other end of the first spring abutting the closed end of the sealing valve;

an open end;

an external surface;

at least one air inlet formed radially through the external surface of the sealing valve near the closed end of the sealing valve and communicating with the socket base;

an annular groove formed around the external surface of the sealing valve near the open end of the sealing valve; and

a second spring mounted in the sealing valve and having two ends;

a moving base being hollow, connected securely to the sealing valve and having

a connecting end connected to the open end of the sealing valve;

an inserting end;

an inner surface;

an outer surface;

an outer flange formed around the inserting end of the moving base;

an annular lip formed on and protruding inward from the inner surface of the inserting end of the moving base;

multiple ball holes formed through the outer surface of the moving base at intervals near the outer flange and arranged in a circle around the moving base; and

multiple second balls held respectively in the ball holes in the moving base;

a pushing assembly movably mounted around the moving base and the sealing valve and having

a pushing collar movably mounted around the open end of the sealing valve and the connecting end of the moving base, abutting the second balls of the moving base and having

an abutting end mounted around the second balls of the moving base;

a holding end mounted around the sealing valve and faced the outer flange of the socket base;

an internal surface;

a spring recess formed in the holding end of the pushing collar; and

a ball recess formed in the abutting end of the pushing collar to mount around and hold the second balls of the moving base;

a third spring mounted around the sealing valve between the socket base and the pushing collar and having two ends respectively abutting the outer flange of the socket base and the pushing collar in the spring recess to make the ball recess of the pushing collar abutting the second balls of the moving base; and

a seal collar movably mounted between the sealing valve and the moving base and having

an inner end movably mounted in the open end of the sealing valve; and

an outer end mounted in the moving base and abutting the annular lip of the moving base; and

an outer sleeve slidably mounted around the socket base and the sealing valve between the body and the pushing assembly.

2. The safety type quick release connector as claimed in claim 1, wherein

the outlet tube has

a forming end formed with the inlet pipe and abutting the first spring;

a middle;

a connecting end connected to the connecting end of the socket base;

an outer surface; and

a mounting recess formed in the connecting end of the outlet tube, communicating with the air chamber and having

an internal surface;

a protruding face formed on the internal surface of the mounting recess between the air chamber and mounting recess; and

a diameter;

wherein the air chamber is formed in the outlet tube near the forming end, communicates with the inlet pipe and has a diameter smaller than the diameter of the mounting recess;

the socket base has a sealing ring mounted on the connecting end of the socket base and in the mounting recess of the outlet tube and having

a curved face annularly on the sealing ring at a side facing the protruding face of the mounting recess of the outlet tube; and

a leakage-proof ring mounted on the sealing ring between the curved face and the protruding face of the mounting recess of the outlet tube;

wherein the closed end of the sealing valve is mounted in the air chamber of the outlet tube via the sealing ring of the socket base; and

the sealing valve has a O-ring mounted around the closed end of the sealing valve, abutted against and closed the sealing ring of the socket base by a force provided by the first spring.

3. The safety type quick release connector as claimed in claim 2, wherein

the seal collar has a mounting recess formed in the inner end of the seal collar and communicating with the sealing valve;

and

the pushing assembly has a seal mounted in the mounting recess of the seal collar, one of the ends of the second spring abutting the sealing valve near the at least air hole and the other end of the second spring of the sealing valve abutting the seal to make the seal collar abutting against the annular lip of the moving base.

4. The safety type quick release connector as claimed in claim 3, wherein

the outlet tube has an abutting flange formed around the outer surface of the outlet tube between the middle of the outlet tube and the inlet pipe to form an abutting face;

the pushing collar has a holding flange formed around and protruding from the holding end of the pushing collar; and

the outer sleeve has

a front sleeve slidably mounted around the socket base and the body and having

an open end mounted around the outlet tube of the body;

a screwed end mounted around the first balls of the socket base;

an external surface;

an internal surface;

a reeding formed on the external surface of the front sleeve near the open end of the front sleeve;

an inclined face formed on the internal surface of the front sleeve near the screwed end and abutting the first balls of the socket base by the third spring pushing the outer flange of the socket base; and

a fourth spring mounted around the outlet tube of the body between the abutting face of the abutting flange and the front sleeve to make the inclined face of the front sleeve abutting the first balls of the socket base; and

a rear sleeve slidably mounted around the sealing sleeve and the pushing assembly, connected to the front sleeve and having

a connecting end securely connected to the screwed end of the front sleeve; and

a holding end mounted around the pushing collar of the pushing assembly to abut the holding flange of the pushing collar.

5. The safety type quick release connector as claimed in claim 4, wherein the inlet pipe of the body has

an external surface;

and

an outer thread formed on the external surface of the inlet pipe to connect with an air compressor.

6. The safety type quick release connector as claimed in claim 5, wherein

the outlet tube has an inner thread formed on the internal surface of the mounting recess;

and

the socket base has a threaded segment formed on the external surface of the socket base at the connecting end and screwed with the inner thread of the outlet tube.

7. The safety type quick release connector as claimed in claim 6, wherein

the socket base has multiple releasing holes formed through the external surface of the socket base at intervals between the threaded segment and the ball holes of the socket base and arranged in a circle around the socket base;

and

the open end of the front sleeve communicates with the releasing holes of the socket base.

8. The safety type quick release connector as claimed in claim 7, wherein

the sealing vale has a threaded segment formed on the external surface of the sealing valve at the open end;

and

the moving base has an inner thread formed on the inner surface of the moving base at the connecting end and screwed with the threaded segment of the sealing valve.

9. The safety type quick release connector as claimed in claim 2, wherein

the outlet tube has an abutting flange formed around the outer surface of the outlet tube between the middle of the outlet tube and the inlet pipe;

the pushing collar has a holding flange formed on and protruding from the holding end of the pushing collar; and

the outer sleeve has

a front sleeve slidably mounted around the socket base and the body and having

an open end mounted around the outlet tube of the body;

a screwed end mounted around the first balls of the socket base;

an external surface;

an internal surface;

a reeding formed on the external surface of the front sleeve near the open end of the front sleeve;

an inclined face formed on the internal surface of the front sleeve near the screwed end and abutting the first balls of the socket base by the third spring pushing the outer flange of the socket base; and

a fourth spring mounted around the outlet tube of the body between the abutting flange and the front sleeve to make the inclined face of the front sleeve abutting the first balls of the socket base; and

a rear sleeve slidably mounted around the sealing sleeve and the pushing assembly, connected to the front sleeve and having

a connecting end securely connected to the screwed end of the front sleeve; and

a holding end mounted around the pushing collar of the pushing assembly to abut the holding flange of the pushing collar.

10. The safety type quick release connector as claimed in claim 1, wherein

the inlet pipe has

an external surface;

and

an outer thread formed on the external surface of the inlet pipe to connect with an air compressor;

the outlet tube has an inner thread formed on the internal surface of the mounting recess;

the socket base has

a threaded segment formed on the external surface of the socket base at the connecting end and screwed with the inner thread of the outlet tube; and

multiple releasing holes formed through the external surface of the socket base at intervals between the threaded segment and the ball holes of the socket base and arranged in a circle around the socket base;

the sealing vale has a threaded segment formed on the external surface of the sealing valve at the open end; and

the moving base has an inner thread formed on the inner surface of the moving base at the connecting end and screwed with the threaded segment of the sealing valve.