ROTATOR DRIVING SYSTEM AND IMAGE FORMING APPARATUS WITH SAME

摘要

A rotator driving system for driving a rotator with a motor includes a dynamic vibration absorber attached to a rotary shaft of the rotator. The dynamic vibration absorber includes an inertia body, a viscosity-providing component to provide a viscosity, and a torsion spring unit to function as a torsion spring that includes a boss fixed to the rotary shaft. Multiple spokes extend radially outward from the boss. Multiple seats are provided at respective tips of the multiple spokes to fix the inertia body. The torsion spring unit is fixed by both the rotary shaft of the rotator and the boss fixed to the rotary shaft therebetween. The viscosity-providing component supports the inertia body via the multiple seats provided at the respective tips of the multiple spokes.

主权项

1. A rotator driving system for driving a rotator, the rotator driving system comprising a dynamic vibration absorber attached to a rotary shaft of the rotator, the dynamic vibration absorber comprising:
an inertia body; a viscosity-providing component to take charge of a viscosity function; and a torsion spring unit to take charge of a torsion spring function, the torsion spring unit including:
a boss fixed to the rotary shaft;at least two spokes extending radially outward from the boss; andat least one seat provided at one of tips of the at least two spokes to fix the inertia body, wherein the torsion spring unit is fixed to the rotary shaft of the rotator via the boss fixed to the rotary shaft, the torsion spring unit supporting the inertia body via the at least one seat provided at one of tips of the at least two spokes.