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US 10,118,281 B2Granted
Impact driver having an impact mechanism
AssigneeRobert Bosch GmbH
InventorsSim Teik Yeoh, Siew Yuen Lee
Life of this patent
Estimating the term…
Abstract
In an impact driver including an impact mechanism for percussive driving of an output drive shaft on which is provided a tool receptacle for receiving an inserted tool, the tool receptacle is embodied as a clamping chuck, a permanent connection being embodied between the clamping chuck and the output drive shaft in order to prevent at least tool-free detachment of the clamping chuck from the output drive shaft.
Claims8
An impact driver, comprising:
- an impact mechanism for rotary percussive driving of an output drive shaft on which is provided a tool receptacle for receiving an inserted tool,
- wherein the tool receptacle is a clamping chuck, a permanent connection being embodied between the clamping chuck and the output drive shaft to prevent at least tool-free detachment of the clamping chuck from the output drive shaft,
- wherein the impact mechanism includes a mechanical impact mechanism having a spring-loaded impact member having at least one input drive cam, and
- wherein the output drive shaft is embodied in at least two pieces and has an output drive stud and a cam member having at least one output drive cam, the output drive stud being fastened nonrotatably via a rigid connection on the clamping chuck and being connected nonrotatably and in an axially fixed manner to the cam member.
1 more element
An impact driver, comprising:
- an impact mechanism for rotary percussive driving of an output drive shaft on which is provided a tool receptacle for receiving an inserted tool,
- wherein the tool receptacle is a clamping chuck, a permanent connection being embodied between the clamping chuck and the output drive shaft to prevent at least tool-free detachment of the clamping chuck from the output drive shaft,
- wherein the impact mechanism includes a mechanical impact mechanism having a spring-loaded impact member having at least one input drive cam,
- wherein the output drive shaft is embodied in at least two pieces and has an output drive stud and a cam member having at least one output drive cam, the output drive stud being fastened nonrotatably via a rigid connection on the clamping chuck and being connected nonrotatably and in an axially fixed manner to the cam member,
- wherein the cam member is fastened on the output drive stud via a securing member, and
- wherein the securing member is disposed on a side of the cam member facing toward the impact member.
3 more elements
An impact driver, comprising:
- an impact mechanism for rotary percussive driving of an output drive shaft on which is provided a tool receptacle for receiving an inserted tool,
- wherein the tool receptacle is a clamping chuck, a permanent connection being embodied between the clamping chuck and the output drive shaft to prevent at least tool-free detachment of the clamping chuck from the output drive shaft,
- wherein the impact mechanism includes a mechanical impact mechanism having a spring-loaded impact member having at least one input drive cam,
- wherein the output drive shaft is embodied in at least two pieces and has an output drive stud and a cam member having at least one output drive cam, the output drive stud being fastened nonrotatably via a rigid connection on the clamping chuck and being connected nonrotatably and in an axially fixed manner to the cam member,
- wherein the output drive stud has, at an axial end thereof connected to the cam member, a rotationally entrained member that engages, in a rotationally secured manner, a rotationally entraining member correspondingly embodied on the cam member, and
- wherein the rotationally entrained member is embodied as a polygonal contour on an external periphery of the output drive stud, and the rotationally entraining member is provided as a polygonal opening on the cam member.
3 more elements
Dependencies are inferred from the claim text.