| 摘要 |
<p>An automatic cutting device of the patent application is such that a clutch is provided between a motor (1) and a worm (4b). The clutch includes a transmission gear (3) with a first saw-tooth gear (3b), axially movable, and a worm shaft (4) having a second saw-tooth gear (4a) in mesh with the first saw-tooth gear (3b) and a worm (4b), and a compression coiled spring (9) for urging the transmission gear (3) so that its first saw-tooth gear (3b) is brought into meshing engagement with the second saw-tooth gear (4a) of the worm shaft (4). <IMAGE></p> |
