Patent ID: 6415876
Filing Date: 2002-07-09
Classification: B23D,B25F

Abstract:
Handtool with a linear vibrating drive, comprising a tool casing, a motor casing (11) which is displaceably mounted in a longitudinal direction in the tool casing, a piston (14) inserted into a first boring (13) in the motor casing (11) having a piston rod (17), a front end of which interacts with a tool, a flutter valve (23), inserted in a valve casing (22) in the motor casing (11) and alternately connects an outlet of a pilot valve (40) to two cylinder chambers (27, 28) on opposite sides of the piston (14), the piston (14) alternately opening a connection to an exhaust air duct (29-31), and a prestressed compression spring (47) between the tool casing and the motor casing (11), wherein the tool casing is designed as a handle (10), a cylindrical, tubular connection piece (37) projects backwards from the motor casing (11), the connection piece is displaceable and sealingly accommodated in a second boring (38) in the handle (10), compressed air being supplied to the second boring (38) via the pilot valve (40), wherein the tubular connection piece (37) is connected to the flutter valve (23), the compression spring (47) prestresses the motor casing (11) in a backwards direction, the motor casing (11) is prestressed by feed pressure in an opposite direction to a force of the compression spring (47), the piston rod (17) is guided in a sliding-contact bearing (18) in the motor casing (11), and the front end of the piston rod (17) is formed for attachment of the tool.