| 摘要 |
A switch for detecting an erroneous erase protection fin provided on a side wall of a video tape cassette including a stationary contact strip made of electrically conductive metal, a movable contact strip made of electrically conductive metal, and a main body formed by an integral molding of electrically insurating synthetic resin. The main body includes a base portion for supporting the stationary and movable contact strips such that they are aligned in a direction in which they are resiliently deformable, a first actuation portion which is engaged with the stationary and movable contact strips, a first flexible portion provided between the base portion and the first actuation portion, a second actuation portion which is engaged with the movable contact portion, and a second flexible portion which is provided between the base portion and the second actuation portion. When the cassette has the fin, the first and second actuation portions are pushed and the stationary and movable contact strips are placed in contact with each other, but when the fin has been removed from the cassette, the second actuation portion is not pushed and the movable contact strip is separated from the stationary contact strip.
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