Electrical hand tool appliance e.g. hammer drill, has pneumatic striking tool and valve openings sealed off to vent pneumatic spring through riveting header

摘要

In the event of no strike there is a shunting piston (4) and a riveting header (5) that uses an air channel (9) controlled by valve openings (8) and extended on-axis outside an inner sleeve for a guide tube (2) in order to ventilate a pneumatic spring (1) into the surroundings. The air channel stretches from the axial area of the pneumatic spring to the axial area of the riveting header. The valve openings can be sealed off in order to vent the pneumatic spring through the riveting header when fitted in an operating position.