| 摘要 |
PURPOSE:To detect the sure wrapping of a film on a winding spool by providing rocking members which are rocked by the wrapping of the film and plural pieces of detecting means for the wrapping on the wrapping part of a winding spool. CONSTITUTION:Plural pieces of opening and closing flaps 34 are disposed at equal angular intervals to a spool body 9. The user opens the rear cover of a camera, insert the preceding end in the leader part of a film 3 into the space between the flaps 34 of the spool 8 and a shaft core part 32 so as to sandwich the same in the space S between the part 32 and a stanchion part 33. Then a motor M is driven and the film 3 is wound automatically, thus the film 3 is wrapped on the spool body 9. When the film 3 encloses the entire circumference of the spool 9, all of the flaps 34 are closed and in accordance with this opening, all of plural pieces of switch contact pieces space from a common contact point ring, then a switch is opened to put out a light emitting element, so that the wrapping of the film is checked easily from the outside. |
