RESIN MEMBER PRESSING-IN DEVICE

摘要

PROBLEM TO BE SOLVED: To prevent pull-off of a pressed-in resin member due to a temperature change, in a resin member pressing-in device used in a cassette deck, especially a device formed that a pulley is pressed in a rotary shaft. SOLUTION: The central hole 2C of a pulley 2 made of resin is pressed in a rotary shaft 1. The central recessed part 2D of the large diameter part 2B of the pulley 2 has a recessed part 2E depth higher than the thickness of the large diameter part 2B. In this embodiment, since only a small diameter part 2A is brought into contact with the rotary shaft 1, the pulley 2 is prevented from pull-off from the rotary shaft 1 due to a temperature change.