Various chucks for use with a power driver having a rotatable drive spindle are provided. One chuck includes a plurality of jaws disposed at a forward end of the chuck, a body, a push plate, a jaw spring, and a nut. The plurality of jaws may be disposed in the body and configured to rotate with the body about a center axis of the chuck. The push plate may be operably coupled to each of the jaws. The jaws may be configured to translate forward to close the jaw opening in response to the push plate translating axially forward. The jaw spring may be configured to apply a forward directed force to urge the push plate forward. The nut may have nut teeth that cause the jaws to translate forward and clamp onto the working bit in response to the nut being rotated in a tightening direction.

Disclosed are a clutch device, a drill chuck, a power tool, and a bidirectional rotation method of the drill chuck. The clutch device comprises a return elastic member, a transmission assembly and a rotating portion, wherein the transmission assembly comprises at least two oppositely arranged engagement portions; the engagement between the two engagement portions enables a front body and a rear body to rotate synchronously; the rotation of the rotating portion in a first direction enables the return elastic member to be compressed, such that the two engagement portions are disconnected; and the rotation of the rotating portion in a second direction enables the compressed return elastic member to return to an initial position such that the two engagement portions are engaged. The drill chuck comprises a front body, a rear body, clamping jaws and the clutch device; and the power tool comprises a driving shaft and the drill chuck.

A drill chuck having a chuck body connectable to a drill spindle, in which clamping jaws are arranged in guide receptacles which run at an incline to the chuck axis and, for the purpose of opening and closing, are adjustable by a threaded ring arranged so as to be rotatable and axially immovable with respect to the chuck body. A locking device, which is made up of a coaxial circle of locking recesses and of at least one locking member, is engaged with the locking recesses under the force of a locking spring. A locking adjusting, is rotatable to a limited extent between end stops and whose rotation allows the locking member to be adjusted. A latching device forms two latching positions in the circumferential direction. A dampener is arranged between the adjusting sleeve and the component adjacent thereto radially to the inside.

The present invention provides a self-locking drill chuck, which the front end of its nut is provided with a number of keys, and the spring piece of the self-locking mechanism is assembled on the nut by being elastically limited between the keys of the nut. The second end of the spring piece passes into the gap between the keys and the drill body through a pair of keys among the keys, and is elastically attached to the key by its elasticity. The connecting protrusion of the spring piece is arranged on the portion of the spring piece between the pair of keys, and the lock end is located in the gap between the key corresponding to the lock end and the drill body. The present invention can not only prevent the self-locking state from exiting due to the inertia effect, but also has the advantages of convenient assembly and can further improve the self-locking performance.

A power tool includes a housing, a motor supported by the housing, and an output spindle rotatably supported relative to the housing about an axis. The motor is operable to drive the output spindle about the axis. The power tool includes a spindle lock assembly between the motor and the output spindle. The spindle lock assembly is adjustable between an unlocked state in which the output spindle is rotatable relative to the housing about the axis and a locked state in which the output spindle is rotationally fixed relative to the housing. The spindle lock assembly includes a first resilient member, positioned between the housing and the output spindle. The first resilient member is configured to at least partially absorb a torque impulse from the output spindle when rotating in a first direction and when the spindle lock assembly transitions from the unlocked state to the locked state.

The chuck comprises a base body (1) having a central axis (12), an outer casing (2) axially fixed but rotatable about the central axis (12) outside the base body (1), the outer casing (2) having inner guides (15) and a plurality of jaws (3) movable along the inner guides (15), a fitting mechanism linking rotations of the outer casing (2) to movements of the jaws (3), and a locking device comprising a ratchet mechanism operated by an outer control sleeve (14). The ratchet mechanism comprises a toothed ring (5) fixed to the base body (1), a pawl fixed to a lever (10) pivotally mounted to the outer casing (2) about a pivot pin (9) parallel to the central axis (12), and an elastic element (28) urging the pawl (6) to engage the toothed ring (5). The control sleeve (14) is rotatable and axially movable in cooperation with a cam (8).

A chuck assembly for a rotary power tool includes a chuck body rotatable about a central axis. The chuck body has a plurality of slots, each oriented at an oblique angle relative to the central axis. The chuck assembly also includes a plurality of jaws, each movable along a respective one of the slots. The chuck assembly also includes a collar coupled to the plurality of jaws. The collar is selectively engageable with the chuck body such that, when engaged, the plurality of jaws are movable along the plurality of slots in response to rotation of the collar.

A chuck is provided for use with a powered driver having a rotatable drive shaft. The chuck includes a plurality of jaws (22) movably disposed in passageways (40) of a cylindrical body (14), a nut (16) rotatably mounted about the body (14) and in communication with the jaws (22) such that rotation of the nut (16) in a closing direction moves the jaws (22) toward each other and rotation of the nut (16) in an opening direction moves the jaws (22) away from each other, and a sleeve rotatably mounted about the body (14). The sleeve is in communication with the nut (16) such that rotation of the sleeve rotationally drives the nut (16). The chuck also including a biasing element (208) disposed between the nut (16) an at least a portion of the sleeve configured to bias the sleeve toward a neutral position. The biasing element (208) limits an inertial force of the sleeve applied to the nut during operation of the powered driver.

A clamping chuck having a body (2) with a slidable spindle (7) in a housing (9). The housing is inclined relative to the axis (xx′) of the chuck and exiting through the front face (3), the spindle (7) movement driven by a piston (19) along the chuck axis and the spindle equipped with a groove (15) into which slides a drive section (25) of the piston. An end of the spindle (7) has a notch (17) exiting into the groove (15) such that, when positioning the spindle from the front face (3) of the chuck, allows the spindle (7) to move along the drive section (25) and touch the latter and enable its groove (15) to be positioned facing the drive section (25), such that such that after one rotation of the spindle (7) around its axis (uu′), the groove (15) engages with the drive section (25).

A chuck configured to be operably coupled to a power driver having a rotatable drive spindle is provided. The chuck (100) may include a body (130) having a center axis (50) and a plurality of clamping jaws (101) configured to clamp onto a working bit. The clamping jaws (101) may be configured to angularly translate relative to the center axis towards or away from a clamping jaw point of convergence (154) to close or open a working bit opening defined by the clamping jaws (101). The clamping jaw point of convergence (154) may be on the center axis. The chuck (100) may also include a plurality of bit alignment jaws (150). The bit alignment jaws (150) may be configured to maintain the working bit within the working bit opening by being configured translate towards or away from a bit alignment jaw point of convergence (153) that is on the center axis (50) and disposed rearward of the clamping jaw point of convergence (154).