Drilling hammer and/or percussive hammer having a tool-holding fixture
AssigneeWacker Construction Equipment AG
InventorsRudolf Berger, Wolfgang Schmid
Life of this patent
Estimating the term…
Abstract
A device for a drilling hammer and/or percussive hammer has a tool holding fixture for holding a tool and for transmitting a torque to the tool. A component of the tool holding fixture consists of a hollow cylindrical tool holder, which has an insertion opening for an insertion end of the tool, and has an impact opening, via which a percussive action can be applied to the insertion end. A stopping surface, which is stationary with regard to the tool holder and which acts in an axial direction of the tool holder, is provided in the tool holder in the area of the impact opening. The tool holding fixture is particularly suited for insertion ends according to the SDS-max standard.
Claims14
A device for a drilling and/or percussive hammer having a tool receptacle for holding a tool and for transmitting a torque to the tool, the tool receptacle comprising:
- an essentially hollow cylindrical recess that forms the tool holder having on an end surface an introduction opening through which an insertion end of the tool can be introduced, and having on an opposite end surface an impact opening through which an impact action can be applied to the insertion end,
- at least one web-shaped rotational driver formed on an inner side of the tool holder, and
- additionally, at least one locking element that, in a locked state, is held in a predetermined radial position, and, in an unlocked state, is capable of movement at least radially out of the predetermined radial position,
- wherein a stop surfaced acting in the axial direction of the tool holder is provided on an inner wall of the tool holder, in the area of the impact opening.
Dependencies are inferred from the claim text.