초록 ▼

A chuck includes a body having an engaging groove for releasably receiving a bit. A sleeve is mounted around and movable relative to the body along a longitudinal axis of the body between a coupling position in which the bit is retained in the engaging groove and a releasing position allowing remova

A chuck includes a body having an engaging groove for releasably receiving a bit. A sleeve is mounted around and movable relative to the body along a longitudinal axis of the body between a coupling position in which the bit is retained in the engaging groove and a releasing position allowing removal or insertion of the bit. The sleeve further includes an engaging section that slideably abuts a coupling section of the body. The engaging section is engaged with the coupling section to allow joint rotation of the body and the sleeve about the longitudinal axis. The sleeve further includes a flange with a frictional outer periphery to provide friction when the sleeve is manually rotated about the longitudinal axis by rotating the frictional outer periphery. Furthermore, the flange can be gripped by a user to move the sleeve to the releasing position.

대표청구항 ▼

1. A chuck for a bit comprising: a body including a first end and a second end spaced from the first end along a longitudinal axis of the body, with the second end of the body including an engaging groove adapted for releasably receiving the bit, with the second end further including a coupling sect

1. A chuck for a bit comprising: a body including a first end and a second end spaced from the first end along a longitudinal axis of the body, with the second end of the body including an engaging groove adapted for releasably receiving the bit, with the second end further including a coupling section having a first chamfered flat face parallel to and spaced from the longitudinal axis, with the first end of the body being adapted for releasably coupling with a tool such that rotational movement of the tool causes rotational movement of the bit;a sleeve mounted around the body and movable relative to the body along the longitudinal axis between a coupling position and a releasing position, with the sleeve including a first compartment slideably receiving the second end of the body and a second compartment spaced from the first compartment along the longitudinal axis and slideably receiving the first end of the body, with the sleeve further including an engaging section having a first flat surface parallel to and spaced from the longitudinal axis and coupled with the first chamfered flat face of the coupling section of the body, wherein the sleeve and the body jointly rotate about the longitudinal axis when the sleeve is manually rotated while allowing movement of the sleeve relative to the body along the longitudinal axis between the coupling position and the releasing position, with the sleeve further including a flange on an outer periphery thereof, with the flange adapted to be gripped by a user for moving the sleeve from the coupling position to the releasing position, with the flange adapted for providing friction when the sleeve is manually rotated about the longitudinal axis by rotating the flange;a positioning member mounted between the sleeve and the body and movable between an engaged position and a disengaged position, with the positioning member being in the engaged position with the bit engaged with and retained by the positioning member in the engaging groove of the body when the sleeve is in the coupling position, with the positioning member movable between the engaged position and the disengaged position with the bit removable from the engaging groove of the body when the sleeve is in the releasing position; anda spring mounted between the body and the sleeve, with the spring biasing the sleeve to the coupling position. 2. The chuck for the bit as claimed in claim 1, with the coupling section including the first chamfered flat face on an outer periphery of the second end of the body and parallel to and spaced from the longitudinal axis, with the engaging section of the sleeve including a first extension extending from an inner periphery of the first compartment of the sleeve, with the first extension including the first flat face parallel to and spaced from the longitudinal axis, with the first flat face slideably abutting the first chamfered flat face along the longitudinal axis, and with the first flat face being engaged with the first chamfered flat face to allow joint rotation of the sleeve and the body when the sleeve is manually rotated about the longitudinal axis. 3. The chuck for the bit as claimed in claim 2, with the coupling section further including a second chamfered flat face on the outer periphery of the second end of the body, with the second chamfered flat face being parallel to and spaced from the longitudinal axis and parallel to and spaced from the first chamfered flat face, with the engaging section of the sleeve further including a second extension extending from the inner periphery of the first compartment of the sleeve, with the second extension including a second flat face parallel to and spaced from the longitudinal axis and parallel to and spaced from the first flat face, with the second flat face slideably abutting the second chamfered flat face along the longitudinal axis, and with the second flat face being engaged with the second chamfered flat face to allow joint rotation of the sleeve and the body when the sleeve is manually rotated about the longitudinal axis. 4. The chuck for the bit as claimed in claim 3, with the engaging groove of the body including a plurality of faces for receiving a plurality of sides of the bit, with a corner formed between two of the plurality of faces adjacent to each other, with the second end of the body further including a first hole extending from the outer periphery in a radial direction perpendicular to the longitudinal axis and including a first reduced, inner end extending through one of the corners and in communication with the engaging groove, with the first hole intermediate the first and second chamfered flat faces, with the positioning member including a first ball slideably received in the first hole and movable between the engaged position and the disengaged position, with the first ball having a diameter smaller than that of the first hole and larger than that of the first reduced, inner end of the first hole, with the first ball partially extended into one of the corners and engaged with the bit in the engaged position, and with the first ball disengaged from the bit in the disengaged position. 5. The chuck for the bit as claimed in claim 4, with the second end of the body further including a second hole extending in the radial direction from the outer periphery and including a second reduced, inner end extending through another of the corners and in communication with the engaging groove, with the second hole intermediate the first and second chamfered flat faces and diametrically opposed to the first hole, with the chuck further comprising, in combination: a second ball slideably received in the second hole and movable between an engaged position and a disengaged position, with the second ball having a diameter smaller than that of the second hole and larger than that of the reduced, inner end of the second hole, with the second ball partially extended into one of the corners and engaged with the bit in the engaged position, with the second ball disengaged from the bit in the disengaged position, with the second ball member being in the engaged position with the bit engaged with and retained by the second ball in the engaging groove of the body when the sleeve is in the coupling position, with the second ball movable between the engaged position and the disengaged position with the bit removable from the engaging groove of the body when the sleeve is in the releasing position. 6. The chuck for the bit as claimed in claim 5, with the first compartment including a first conic section intermediate the first and second extensions, with the first compartment further including a second conic section opposite to and spaced from the first conic section and intermediate the first and second extensions, with each of the first and second conic sections having increasing radii to the longitudinal axis away from the second compartment, with the first and second balls movable across the first and second conic sections from the engaged position to the disengaged position by removing the bit from the engaging groove when the sleeve is in the releasing position. 7. The chuck for the bit as claimed in claim 6, with the first end of the body including a first annular groove in an outer periphery thereof, with the first annular groove having first and second ends spaced in a direction parallel to the longitudinal axis and corresponding to the coupling position and the releasing position of the sleeve, with the second compartment of the sleeve including a second annular groove in an inner periphery thereof, with the chuck further comprising, in combination: a retainer ring partially received in the first annular groove and partially received in the second annular groove, with the retainer ring sliding between the first and second ends of the first annular groove in the direction parallel to the longitudinal axis when the sleeve moves between the coupling position and the releasing position relative to the body. 8. The chuck for the bit as claimed in claim 7, with the outer periphery of the body further including a first shoulder formed thereon, with the sleeve further including a second shoulder on an inner periphery thereof between the first and second compartments, with the spring mounted around the body between the first and second shoulders and biasing the sleeve to the coupling position, and with the first shoulder intermediate the spring and the first annular groove. 9. The chuck for the bit as claimed in claim 2, with the engaging groove of the body including a plurality of faces for receiving a plurality of sides of the bit, with a corner formed between two of the plurality of faces adjacent to each other, with the second end of the body further including a hole extending from the outer periphery in a radial direction perpendicular to the longitudinal axis and including a reduced, inner end extending through one of the corners and in communication with the engaging groove, with the positioning member including a ball slideably received in the hole and movable between the engaged position and the disengaged position, with the ball having a diameter smaller than that of the hole and larger than that of the reduced, inner end of the hole, with the ball partially extended into one of the corners and engaged with the bit in the engaged position, and with the ball disengaged from the corner in the disengaged position. 10. The chuck for the bit as claimed in claim 2, with the engaging groove of the body including a plurality of faces for coupling a plurality of faces of the bit, with a corner formed between two of the plurality of faces adjacent to each other, with the outer periphery of the second end of the body further including an arcuate groove extending in a circumferential direction around the longitudinal axis, with the arcuate groove having a bottom wall, with the second end of the body further including a hole extending in a radial direction perpendicular to the longitudinal axis and orthogonal to the circumferential direction, with the hole extending from the bottom wall of the arcuate groove into one of the corners and in communication with the engaging groove, with the positioning member including an arcuate section slideably received in the arcuate groove, with the positioning member further including a projection extending from the arcuate section and slideably received in the hole, with the projection extended through the hole into the engaging groove and engaged with the bit when the positioning member is in the engaged position, with the positioning member movable from the engaged position to the disengaged position by removing the bit from the engaging groove when the sleeve is in the releasing position. 11. The chuck for the bit as claimed in claim 10, with the first end of the body including a first annular groove in an outer periphery thereof, with the first annular groove having first and second ends spaced in a direction parallel to the longitudinal axis and corresponding to the coupling position and the releasing position of the sleeve, with the second compartment of the sleeve including a second annular groove in an inner periphery thereof, with the chuck further comprising, in combination: a retainer ring partially received in the first annular groove and partially received in the second annular groove, with the retainer ring sliding between the first and second ends of the first annular groove in the direction parallel to the longitudinal axis when the sleeve moves between the coupling position and the releasing position relative to the body. 12. The chuck for the bit as claimed in claim 11, with the outer periphery of the body further including a first shoulder formed thereon, with the sleeve further including a second shoulder on an inner periphery thereof between the first and second compartments, with the spring mounted around the body between the first and second shoulders and biasing the sleeve to the coupling position, and with the first shoulder intermediate the spring and the first annular groove. 13. The chuck for the bit as claimed in claim 2, with the engaging groove of the body including a plurality of faces for coupling a plurality of sides of the bit, with a corner formed between two of the plurality of faces adjacent to each other, with-the second end of the body further including a groove in the outer periphery thereof and having a bottom wall, with the groove having an opening extending through the bottom wall into one of the corners and in communication with the engaging groove, with the positioning member slideably received in the groove, with the positioning member having a portion extending through the opening into the engaging groove and engaged with the bit when in the engaged position, and with the positioning member movable from the engaged position to the disengaged position by removing the bit from the engaging groove when the sleeve is in the releasing position. 14. The chuck for the bit as claimed in claim 13, with the first end of the body including a first annular groove in an outer periphery thereof, with the first annular groove having first and second ends spaced in a direction parallel to the longitudinal axis and corresponding to the coupling position and the releasing position of the sleeve, with the second compartment of the sleeve including a second annular groove in an inner periphery thereof, with the chuck further comprising, in combination: a retainer ring partially received in the first annular groove and partially received in the second annular groove, with the retainer ring sliding between the first and second ends of the first annular groove in the direction parallel to the longitudinal axis when the sleeve moves between the coupling position and the releasing position relative to the body. 15. The chuck for the bit as claimed in claim 14, with the outer periphery of the body further including a first shoulder formed thereon, with the sleeve further including a second shoulder on an inner periphery thereof between the first and second compartments, with the spring mounted around the body between the first and second shoulders and biasing the sleeve to the coupling position, and with the first shoulder intermediate the spring and the first annular groove. 16. The chuck for the bit as claimed in claim 1, with the first end of the body including a first annular groove in an outer periphery thereof, with the first annular groove having first and second ends spaced in a direction parallel to the longitudinal axis and corresponding to the coupling position and the releasing position of the sleeve, with the second compartment of the sleeve including a second annular groove in an inner periphery thereof, with the chuck further comprising, in combination: a retainer ring partially received in the first annular groove and partially received in the second annular groove, with the retainer ring sliding between the first and second ends of the first annular groove in the direction parallel to the longitudinal axis when the sleeve moves between the coupling position and the releasing position relative to the body. 17. The chuck for the bit as claimed in claim 16, with the outer periphery of the body further including a first shoulder formed thereon, with the sleeve further including a second shoulder on an inner periphery thereof between the first and second compartments, with the spring mounted around the body between the first and second shoulders and biasing the sleeve to the coupling position, and with the first shoulder intermediate the spring and the first annular groove. 18. The chuck for the bit as claimed in claim 1, with the body including a longitudinal through-hole including the longitudinal axis and the engaging groove receiving the bit, with the longitudinal through-hole further including a coupling groove formed in the first end of the body and spaced from the engaging groove along the longitudinal axis, with the coupling groove releasably coupled with the tool, with the longitudinal through-hole further including an intermediate section between the engaging groove and the coupling groove, with the body further including a magnet mounted in the intermediate section of the longitudinal through-hole and adapted for attracting and retaining the bit in the engaging groove. 19. The chuck for the bit as claimed in claim 1, with the flange formed on an end of an outer periphery of the body and around the second compartment, with the flange including a first frictional outer periphery for providing friction when the sleeve is manually rotated about the longitudinal axis by rotating the first frictional outer periphery, with the sleeve further including an annular protrusion formed on another end of the outer periphery thereof and around the first compartment, with the flange including an end face facing the annular protrusion, with the end face adapted to be gripped by the user for moving the sleeve from the coupling position to the releasing position, and with the annular protrusion including a second frictional outer periphery for providing friction when the sleeve is manually rotated about the longitudinal axis by manually rotating the second frictional outer periphery. 20. The chuck for the bit as claimed in claim 19, with the first end of the body including a coupling groove, with the coupling groove being square in cross section and including four faces each having a recess adapted for releasably engaging with a ball of a drive column of a socket wrench.