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US 10,328,558 B2Granted
Drill
AssigneeBlack & Decker Inc.
InventorsMarkus Rompel, Rafael Glottschling
Life of this patent
Estimating the term…
Abstract
A drill includes a housing and a motor having a drive spindle. An output spindle is capable of being rotationally driven by the drive spindle via a torque clutch. The drill further includes atangential impact mechanism for superimposing tangential impacts onto the output spindle when activated. The tangential impact mechanism includes a sleeve rotatably mounted on the output spindle, and an anvil rotatably mounted onto the output spindle. The output spindle and the sleeve are rotationally driven by a planetary gear system comprising a ring gear, a sun gear and a planetary gear which is drivingly connected between the ring gear and sun gear.
Claims19
A drill comprising:
- a housing;
- a motor mounted in the housing having a drive spindle;
- an output spindle capable of being rotationally driven by the drive spindle via a torque clutch, the output spindle having an impact surface and a central axis, wherein the output spindle is hollow;
- a tangential impact mechanism for superimposing tangential impacts onto the output spindle when activated, the tangential impact mechanism being activated when the torque clutch slips, the tangential impact mechanism comprising:
- a sleeve rotatably mounted on the output spindle which is capable of being rotationally driven by the drive spindle;
- and
- an anvil rotatably mounted onto the output spindle and which is connected to the sleeve so that relative rotation of the sleeve and spindle results in the anvil repetitively striking the at least one impact surface;
- a planetary gear system for rotationally driving the output spindle and the sleeve, the planetary gear system comprising:
- a ring gear mounted on the output spindle so that rotation of the ring gear results in rotation of the output spindle,
- a sun gear mounted on the sleeve so that rotation of the sun gear results in rotation of the sleeve, and
- at least one planetary gear mounted on a carrier and is drivingly connected between the ring gear and sun gear;
- and
- a hammer mechanism for generating axial impacts which can be imposed on a cutting tool, the hammer mechanism comprising:
- a piston capable of being reciprocatingly driven by the drive spindle via a transmission mechanism;
- a ram reciprocatingly driven by the reciprocating piston via an air spring;
- and
- a beat piece for repetitively striking the ram;
- wherein the piston, ram and beat piece are slideably mounted within the output spindle, and
- wherein the drive spindle is drivingly connected to the carrier such that rotation of the drive spindle results in the rotation of the at least one planetary gear around the central axis of the output spindle.
16 more elements
A drill comprising:
- a housing;
- a motor mounted in the housing having a drive spindle;
- an output spindle capable of being rotationally driven by the drive spindle via a torque clutch, the output spindle having an impact surface and a central axis;
- a tangential impact mechanism for superimposing tangential impacts onto the output spindle when activated, the tangential impact mechanism being activated when the torque clutch slips, the tangential impact mechanism comprising:
- a sleeve rotatably mounted on the output spindle which is capable of being rotationally driven by the drive spindle;
- and
- an anvil rotatably mounted onto the output spindle and which is connected to the sleeve so that relative rotation of the sleeve and spindle results in the anvil repetitively striking the at least one impact surface;
- and
- a planetary gear system for rotationally driving the output spindle and the sleeve, the planetary gear system comprising:
- a ring gear mounted on the output spindle so that rotation of the ring gear results in rotation of the output spindle,
- a sun gear mounted on the sleeve so that rotation of the sun gear results in rotation of the sleeve, and
- at least one planetary gear mounted on a carrier and is drivingly connected between the ring gear and sun gear;
- wherein the drive spindle is drivingly connected to the carrier such that rotation of the drive spindle results in the rotation of the at least one planetary gear around the central axis of the output spindle, and
- wherein the torque clutch comprises:
- a ball bearing cage non-rotatably fixed onto one of the sun gear and ring gear;
- a plurality of ball bearings mounted within the ball bearing cage and whose position are fixed within the ball bearing cage;
- a path being formed on the other of the sun gear and ring gear along which the ball bearings are capable of travelling, the path having indentations which correspond to the number and positions of the ball bearings;
- and
- biasing means for urging the ball bearings into the indentations when the ball bearings are aligned with the indentations.
16 more elements
Dependencies are inferred from the claim text.