Rotation is transmitted from electric motor 5 through gears 6 and 7 to shaft 1. Shaft 1 rotates about axis A and is rigidly attached to member a of cam device 3 which resembles a claw clutch. Member b of device 3 is rigidly attached to striker 2 which reciprocates, without rotation, along axis A. Striker 2 strikes head 8. Thus, rotation of shaft 1 is converted into reciprocation of striker 2 by means of cam device 3. Spring 4 serves as a shock-absorber.
$3081$SmC,ML$