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US 7,753,135 B2Granted
Power tool with a rotating and/or hammering drive mechanism
AssigneeRobert Bosch GmbH
InventorJuergen Lennartz
Life of this patent
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Abstract
A handheld power tool with a rotating and/or hammering drive mechanism for a tool (11) that can be inserted into a tool receptacle (10) has a unit which transmit the rotation of a motor shaft (5) to an intermediate shaft (7), by which the tool receptacle (10) is set into a rotary motion and/or a hammering motion. A compact construction of the handheld power tool is attained by providing that the motor shaft (5) is coupleable or is coupled to the intermediate shaft (7) in one axis.
Claims8
A handheld power tool comprising a housing;
- a tool receptacle;
- a motor having a motor shaft;
- an intermediate shaft;
- means for transmitting a rotation of said motor shaft to a rotary motion of said intermediate shaft;
- a drive mechanism for a tool insertable into said tool receptacle, wherein said drive mechanism is provided with means for converting the rotary motion of said intermediate shaft into a rotary motion of said tool receptacle and means for converting the rotary motion of said intermediate shaft into a hammering motion of said tool receptacle, wherein said motor shaft is coaxial with said intermediate shaft, said motor shaft and said intermediate shaft having two opposite ends including a first end which is facing said motor and a second end which is facing said receptacle, said means for converting the rotary motion of said intermediate shaft into a rotary motion of said tool receptacle and said means for converting the rotary motion of said intermediate shaft into a hammering motion of said tool receptacle being located between said first and second ends on said motor shaft and said intermediate shaft.
2 more elements
Dependencies are inferred from the claim text.