Patent ID: 6808565
Filing Date: 2004-10-26
Classification: B65H,Y10T

Abstract:
A clutch mechanism of coat film transfer tool, comprising:a feed reel with a coat film transfer tape wound thereabout and a take-up reel for collecting the coat film transfer tape after use, the take-up reel cooperating with the feed reel in a case to synchronize a feed speed and take-up speed of the coat film transfer tape in both reels, power transmission means is provided between a tape winding portion for winding up the coat film transfer tape and a rotary drive unit for rotating and driving the tape winding portion, the power transmission means is composed in at least one of the feed and take-up reels that engages the tape winding portion for rotation therewith, and the rotary drive unit including a rotary drive shaft having catch means at one end of the rotary drive shaft and an engaging portion formed at an opposite end of the rotary drive shaft and extending radially outwardly therefrom and the tape winding portion including a tape winding portion shaft disposed concentrically about the rotary drive shaft for rotation thereabout and having catch receiving means at one end of the tape winding portion shaft for engaging with the catch means and an engaging portion formed at an opposite end of the tape winding portion shaft and defining an annulus end of the tape winding portion shaft, the engaging portions disposed in a facially opposing relationship for frictional and compressing engagement between each other causing a thrust load to the catch means and the catch receiving means, when engaged, thereby preventing relative axial movement between the rotary drive unit and the tape winding portion while affording simultaneous rotational movement of the rotary drive unit and the tare winding portion unless a rotational force to cause rotational movement exceeds a frictional force between the engaging portions.