| 摘要 |
PROBLEM TO BE SOLVED: To reduce the fluctuation of rotation speed due to temperature by providing a slide contact member which is deformed to increase contact pressure when a temperature rises high in a panel turning mechanism such as an acoustic equipment which limits rotation speed by an oil damper. SOLUTION: A panel 1 is energized counterclockwise by a torsion coil spring 8 mounted on a shaft 3a. An intermediate gear 4 supported rotatably meshes with a gear 1a and further meshes with a small gear 5a of an oil damper 5. A slide contact member 7 made of a material having high coefficient of thermal expansion is bonded to a support metal fitting 6 to come in slide-contact with a slide-contact face 1d of the panel 1. When a lock is released, the panel 1 turns due to spring of a torsion coil spring 8. When a temperature rises, resistance torque of the oil damper 5 is reduced, but the slide contact member 7 is expanded to increase friction resistance so as to limit turn speed of the panel 1. The slide contact member 7 may be constituted by bimetal and one end thereof may be in slide-contact with the panel. Consequently, it is possible to reduce the fluctuation of turn speed and increase a commercial value of a product. |
