Multi-size fast connector

• US 20070228672A1
• Filed: 04/04/2006
• Published: 10/04/2007
• Est. Priority Date: 04/04/2006
• Status: Abandoned Application

• Current Assignee: Ping Huang
• Original Assignee: Ping Huang
• Inventors: Huang, Ping
• Application Number:
  US11/396,689
• Publication Number:
  US 20070228672A1
• Time in Patent Office: Days
• US Class Current: 279/58
• CPC Class Codes: B23B 2231/38 Keyless chucks for hand tools
• CPC Class Codes: B23B 31/1253 Jaws movement actuated by an axially movable member
• CPC Class Codes: B25B 15/001 characterised by material or shape of the tool bit
• CPC Class Codes: B25B 23/0035 Connection means between socket or screwdriver bit and tool
• CPC Class Codes: Y10T 279/17598 Fixed cam and moving jaws

Abstract

A multi-size fast connector including a main body, a holding unit and a slide unit. The main body is formed with a socket at a front end, in which a tool bit can be inserted. The holding unit serves to fixedly hold the tool bit. The slide unit serves to push the holding unit to firmly hold various sizes of tool bits. It is easy to fast connect various tool bits with the fast connector and disconnect the tool bits from the fast connector.

Claims

1. A multi-size fast connector comprising:

a main body formed with a socket at a front end, in which a tool bit can be inserted, a wall of the socket being formed with several slots at equal intervals, an annular groove being formed on an outer circumference of the wall of the socket between the slots and the front end, in which a retainer ring is inlaid, the retainer ring serving to connect a collar fitted around the socket with the main body, a rear end of the main body being sequentially formed with a first annular groove and a connecting section;

a holding unit disposed between the socket and the collar for holding the tool bit; and

a slide unit fitted between the main body and the collar for pushing the holding unit.

2. The multi-size fast connector as claimed in claim 1, wherein an interior of the collar is tapered from the rear end to the front end.

3. The multi-size fast connector as claimed in claim 1, wherein the holding unit is composed of several clamping blocks fitted in the slots.

4. The multi-size fast connector as claimed in claim 3, wherein each clamping block has a ratchet section on one side facing the socket, the other side of the clamping block being formed with a slope slidable along an inner circumference of the collar, two sides of the slope being formed with widening sections, whereby the clamping block can slide within the slot without dropping into the socket.

5. The multi-size fast connector as claimed in claim 1, wherein the slide unit includes a slide sleeve, a spring and a fixing member.

6. The multi-size fast connector as claimed in claim 5, wherein the slide sleeve has a conic section adapted to the tapered interior of the collar, a skirt section forward extending from a front end of the conic section, the skirt section being formed with several slots corresponding to the slots of the socket, an inner circumference of the conic section being correspondingly fitted around the outer circumference of the socket, a first stop section being formed behind the inner circumference of the conic section for stopping the spring, an outer circumference of the fixing member being formed with a second stop section, an inner circumference of the fixing member being formed with a second annular groove corresponding to the first annular groove, a second retainer ring being inlaid in the first and second annular grooves for fixing the fixing member with the main body.

7. A multi-size fast connector comprising:

a main body formed with a socket at a front end, in which a tool bit can be inserted, a wall of the socket being formed with several slots at equal intervals, an annular groove being formed on an outer circumference of the wall of the socket between the slots and the front end, in which a retainer ring is inlaid, the retainer ring serving to connect a collar fitted around the socket with the main body, a rear end of the main body being sequentially formed with a first annular groove and a connecting section;

a holding unit disposed between the socket and the collar for holding the tool bit, the holding unit being composed of three clamping blocks fitted in the slots for holding a tool bit; and

a slide unit fitted between the main body and the collar for pushing the holding unit.