Patent ID: 7775186

Claim:
A structure for use on a cylinder head, said structure comprising: a camshaft; and a supporting member configured to support said camshaft and being a single part, wherein said camshaft comprises a shaft body having a circular cross section and a cam lobe being disposed so as to surround the circumference of said shaft body, said supporting member has a plurality of circular bearing holes arranged on a single axis, such that at least two of said circular bearing holes are arranged so as to be adjacent, said cam lobe is a single part, not formed integrally with said shaft body, a mounting hole is disposed in said cam lobe, said mounting hole being configured to enable said shaft body to penetrate therethrough, said shaft body penetrates through said plurality of bearing holes and said mounting hole disposed in said cam lobe arranged in between said adjacent bearing holes, and said cam lobe is integrally fixed to said shaft body.