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US 7,597,155 B2Granted
Tool fitting, adapter and system with a tool fitting and an adapter
AssigneeRobert Bosch GmbH
InventorsAndre Ullrich, Thomas Bernhardt, Kurt Sieber
Life of this patent
Estimating the term…
Abstract
A tool fitting that is provided to accommodate a rotary hammer bit and/or a chisel bit (10) and an adapter (12). The tool fitting has centering elements (14, 16) for at least reducing the mobility of the adapter (12) when mounted in comparison to the mobility of the rotary hammer bit and/or chisel bit (10) when mounted.
Claims18
A system, comprising:
- a tool holder for holding at least a tool in the group consisting of a rotary hammer bit and a chisel bit:
- an adapter that is distinct from the tool and that is insertable into the tool holder,
- wherein the tool holder comprises:
- a tool fitting body with a receiving region for receiving said tool, the receiving region forming a bearing surface for supporting the tool such that the tool may be inserted into the tool fitting body in an insert direction parallel to the bearing surface;
- centering means configured to center the adapter, said centering means having at least one centering surface that is separate from the bearing surface;
- and
- wherein the adapter comprises:
- an inserting region that is provided to be inserted into the tool holder, wherein the inserting region abuts on said bearing surface of the tool holder when the adapter is mounted in the tool holder;
- a receiving region for receiving a chuck for a drill bit;
- and
- centering means configured for centering the adapter with respect to the tool holder, the centering means having at least a centering surface being provided to correspond with said centering surface of the tool holder.
8 more elements
A system, comprising:
- a tool holder for holding at least a too being a rotary hammer bit;
- an adapter that is distinct from the tool and that may be inserted into the tool holder,
- wherein the tool holder comprises:
- a tool fitting body with a receiving region for receiving said tool the receiving region forming a bearing surface for supporting the tool such that the tool may be inserted into the tool fitting body in an insert direction parallel to the bearing surface;
- and
- centering means configured to center the adapter, said centering means having at least one centering surface that is separate from the bearing surface;
- the system further comprising,
- a hammer mechanism for driving the rotary hammer bit in a percussive fashion, wherein the rotary hammer bit mounted in the tool fitting body must be slid into the tool fitting body over an idle span distance from an idle position in which it is not driven in percussive fashion to an operating position in which the rotary hammer bit is drivable in percussive fashion;
- wherein the adapter comprises:
- an inserting region that is provided to be inserted into the tool holder, wherein the inserting region abuts on said bearing surface of the tool holder when the adapter is mounted in the tool holder;
- a receiving region for receiving a chuck for a drill bit;
- centering means configured for centering the adapter with respect to the tool holder, the centering means having at least a centering surface being provided to correspond with said centering surface of the tool holder;
- and
- a locking means embodied as a locking recess provided to give to the adapter in the mounted state in the tool fitting body an axial mobility in said insert direction that is less than the idle span distance.
11 more elements
Dependencies are inferred from the claim text.