Oscillating rod member equipped with dynamic damper

A rod-damper combination comprising:

• an oscillating rod member including a middle portion, and a pair of tapered portions axially spaced apart from each other by said middle portion, said tapered portions having respective tapered outer circumferential surfaces whose outside diameters decrease in axially outward directions of said rod member away from said middle portion;
• and
• a dynamic damper including (i) a mass portion having a substantially cylindrical shape and including a mass member, and (ii) two elastic support members formed integrally with and on axially opposite sides of said mass portion to elastically support said mass portion with respect to said rod member, said mass member of said mass portion having an axial length that is smaller than an axial length of said middle portion of said rod member,
• said two elastic support members of said dynamic damper having respective tapered inner circumferential surfaces, said dynamic damper being positioned on said oscillating rod member such that said tapered inner circumferential surfaces of said two elastic support members are held in abutting contact with said tapered outer circumferential surfaces of said tapered portions of said rod member, respectively, and such that said mass portion is diametrically outwardly spaced from said middle portion of said rod member by a predetermined distance while said mass member is disposed within said axial length of said middle portion.