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US 10,239,193 B2Granted
Handheld tool apparatus
AssigneeRobert Bosch GmbH
InventorTobias Herr
Life of this patent
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Abstract
A handheld tool apparatus comprising a spindle blocking apparatus and a torque limiting unit that includes at least one limiting spring and a stop arrangement that is supported movably against the limiting spring. It is provided that the stop arrangement of the torque limiting unit nonrotatably secure a wedging arrangement of the spindle blocking apparatus.
Claims15
A handheld tool apparatus, comprising:
- a spindle blocking apparatus;
- and
- a torque limiting unit having at least one limiting spring and a stop arrangement that is supported movably against the limiting spring;
- wherein the stop arrangement of the torque limiting unit nonrotatably secures a wedging arrangement of the spindle blocking apparatus at least upon connection of the wedging arrangement to the stop arrangement,
- wherein the spindle blocking apparatus includes a blocking arrangement embodied as rollers which are configured to wedge between at least one first wedging surface and at least one second wedging surface when a tool torque is applied onto an inserted tool securing device,
- wherein the at least one first wedging surface is embodied as a region of a surface of at least one of a tool spindle and a connecting arrangement coupled to the tool spindle,
- wherein the wedging arrangement is embodied as a wedging ring, wherein an inner surface of the wedging ring forms a second wedging surface of the at least one second wedging surface,
- wherein the spindle blocking apparatus includes freewheel surfaces which are embodied as regions of a surface of a planet carrier of a planetary gearbox stage.
5 more elements
A handheld tool, comprising:
- a handheld tool apparatus, including:
- a spindle blocking apparatus;
- and
- a torque limiting unit having at least one limiting spring and a stop arrangement that is supported movably against the limiting spring;
- wherein the stop arrangement of the torque limiting unit nonrotatably secures a wedging arrangement of the spindle blocking apparatus at least upon connection of the wedging arrangement to the stop arrangement,
- wherein the spindle blocking apparatus includes a blocking arrangement embodied as rollers which are configured to wedge between at least one first wedging surface and at least one second wedging surface when a tool torque is applied onto an inserted tool securing device,
- wherein the at least one first wedging surface is embodied as a region of a surface of at least one of a tool spindle and a connecting arrangement coupled to the tool spindle,
- wherein the wedging arrangement is embodied as a wedging ring, wherein an inner surface of the wedging ring forms a second wedging surface of the at least one second wedging surface,
- wherein the spindle blocking apparatus includes freewheel surfaces which are embodied as regions of a surface of a planet carrier of a planetary gearbox stage.
6 more elements
Dependencies are inferred from the claim text.