Patent ID: 8091525

Claim:
A rocker arm configured to be swingably supported by a support portion of an internal-combustion engine and to be driven in a swinging manner by a cam, said rocker arm comprising: a sheet-metal rocker arm body manufactured by plastic working, and including a cam follower having a first slide-contact surface, wherein said first slide-contact surface is in sliding contact with the cam so as to function as a point where force is applied; a fulcrum portion manufactured by cutting, and including a second slide-contact surface, wherein said second slide-contact surface is swingably in sliding contact with respect to the support portion so as to function as a fulcrum, wherein said fulcrum portion penetrates said rocker arm body from a side corresponding to said first slide-contact surface to a side corresponding to said second slide-contact surface, and is fastened to said rocker arm body, and said fulcrum portion has a through hole configured to supply a lubricant supplied to said second slide-contact surface at a location of penetration to a lubricant discharging portion through said rocker arm body; a nut engaging said fulcrum portion so as to fasten said fulcrum portion to said sheet-metal rocker arm body; and a lubricant discharging hole disposed at an outer surface of said sheet-metal rocker arm body by engagement of said fulcrum portion with said sheet-metal rocker arm body by said nut, and being in communication with said through hole, wherein said lubricant discharging hole biases the lubricant supplied from said through hole in a direction toward said first slide-contact surface.