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US 8,011,443 B2Granted
Striking mechanism for a handheld power tool
AssigneeRobert Bosch GmbH
InventorsGerhard Meixner, Otto Baumann, Jan Koalick
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Abstract
The invention is a striking mechanism for a handheld power tools in particular electric hammer. A piston is arranged in an axially bidirectionally movable manner in a guide tube. A striker is provided which acts on a striking pin and which is held in a movable manner in the guide tube. A compression space is delimited by the piston and the striker such that an air cushion is enclosed therein. It is proposed that at least one spring element is provided between the striker and the striking pin.
Claims20
An impact mechanism for a handheld power tool, in particular an electric hammer, comprising:
- a piston that is arranged in an axially and bidirectionally movable fashion in a guide tube;
- a striking pin contained in the guide tube;
- a striking element contained in sliding fashion in the guide tube and which acts on the striking pin;
- a compression chamber, which is formed in the guide tube between the piston and the striking element;
- an air cushion enclosed by the compression chamber;
- and
- at least one spring element is provided between the striking element and the striking pin.
4 more elements
Dependencies are inferred from the claim text.