Rotary drive for a hand-held power tool
AssigneeHilti Aktiengesellschaft
InventorMaximilian Knyrim
Life of this patent
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Abstract
Rotary drive for driving a tool fitting of a hand-held power tool, in particular of a combination hammer or hammer drill, wherein the rotary drive is configured, with respect to a working axis of the tool fitting, to convert a thrust input movement into a rotary output movement, wherein the rotary drive is in the form of a slotted-link mechanism with a freewheel-mounted track body and a ball cage arranged coaxially with the track body, wherein, when the ball cage is subjected to the thrust input movement, at least one ball of the ball cage slides along in an endless track contour formed on an outer surface of the track body and thus brings about a rotation of the freewheel-mounted track body.
Claims19
A rotary drive for driving a tool fitting of a hand-held power tool, the rotary drive configured, with respect to a working axis of the tool fitting, to convert a thrust input movement into a rotary output movement, the rotary drive comprising:
- a slotted-link mechanism having a freewheel-mounted track body and a ball cage arranged coaxially with the track body, wherein, when the ball cage is subjected to the thrust input movement, at least one ball of the ball cage slides along in an endless track contour formed on an outer surface of the track body to bring about a rotation of the freewheel-mounted track body;
- wherein the track body is freewheel-mounted by way of a form-fitting or force-fitting freewheel.
A rotary drive for driving a tool fitting of a hand-held power tool, the rotary drive configured, with respect to a working axis of the tool fitting, to convert a thrust input movement into a rotary output movement, the rotary drive comprising:
- a slotted-link mechanism having a freewheel-mounted track body and a ball cage arranged coaxially with the track body, wherein, when the ball cage is subjected to the thrust input movement, at least one ball of the ball cage slides along in an endless track contour formed on an outer surface of the track body to bring about a rotation of
- the freewheel-mounted track body;
- a sleeve carrying the ball cage, wherein the sleeve engages at least partially around the track body;
- and an anti-rotation safeguard for the sleeve, wherein the anti-rotation safeguard includes a slot/pin pairing.
A rotary drive for driving a tool fitting of a hand-held power tool, the rotary drive configured, with respect to a working axis of the tool fitting, to convert a thrust input movement into a rotary output movement, the rotary drive comprising:
- a slotted-link mechanism having a freewheel-mounted track body and a ball cage arranged coaxially with the track body, wherein, when the ball cage is subjected to the thrust input movement, at least one ball of the ball cage slides along in an endless track contour formed on an outer surface of the track body to bring about a rotation of the freewheel-mounted track body;
- wherein the track body is mounted immovably with respect to a machine housing in a direction of the working axis via a fixed bearing.
Dependencies are inferred from the claim text.