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US 9,211,639 B2Granted
Hand-held power tool
AssigneeRobert Bosch GmbH
InventorsJoachim Hecht, Heiko Roehm, Tobias Herr
Life of this patent
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Abstract
In a hand-held power tool, in particular an impact drill driver, having a torque setting unit, a gearbox assemblage, a hammer impact mechanism, and a tool spindle, the hammer impact mechanism has a drive rotation element having a rotation axis that is disposed coaxially with at least a part of the tool spindle.
Claims19
A hand-held power tool, comprising:
- a torque setting unit;
- a gearbox assemblage;
- a hammer impact mechanism;
- and
- a tool spindle configured to transfer a rotary motion to a tool mounting device;
- wherein the hammer impact mechanism includes a drive rotation element having a rotation axis that is arranged coaxially with at least a part of the tool spindle,
- wherein the hammer impact mechanism includes a linearly moveable striker that in at least one operating state impacts a surface of the tool spindle linearly, and that partly coaxially surrounds the tool spindle in at least one plane,
- wherein the drive rotation element is arranged as an impact mechanism shaft that encases at least a region of the tool spindle and transfers a rotary motion to the striker to generate an impact.
5 more elements
A hand-held power tool, comprising:
- a torque setting unit;
- a gearbox assemblage;
- a hammer impact mechanism;
- and
- a tool spindle;
- wherein the hammer impact mechanism includes a drive rotation element having a rotation axis that is arranged coaxially with at least a part of the tool spindle,
- wherein the drive rotation element is arranged as an impact mechanism shaft that encases at least a region of the tool spindle,
- wherein the hammer impact mechanism is arranged as an eccentric impact mechanism that includes an eccentric element, wherein the eccentric element is:
- comprised of a sleeve;
- connected nonrotatably to the impact mechanism shaft;
- configured to move an eccentric outer element of the hammer impact mechanism during a hammer drilling mode;
- supported in an orifice of the eccentric outer element, which eccentric outer element is arranged as an approximately elliptical disk;
- and
- movable relative to the eccentric outer element by a bearing.
11 more elements
Dependencies are inferred from the claim text.