Tape cassette with slider cover rocking mechanism having coil spring retainer portion

摘要

A tape cassette comprising a slider slidably covering a lower half of a cassette main body containing a magnetic tape, a lock element of the slider withdrawably inserted into the lower half surface, a locking coil spring for pressing the lock element, and a retainer portion for retaining the locking coil spring to an upper half, wherein: the retainer portion comprises a spring receiving portion and a retainer wall surrounding the spring receiving portion, said retainer wall having a surface inclined toward the spring receiving portion.