Topy Kogyo Kabushiki Kaisha

Zulkaizam Asri Bin Kassim Mohd

Kentaro Oba

Keitaro Enami

A multi-piece rim structure for a wheel includes a rim base, a bead seat ring(ring member) and a lock ring. The bead seat ringreceives a load in a radial direction and an axial direction from a bead portion of a tire. An annular ridgeof the lock ringcan be received in an annular lock ring grooveof the rim base. A receiving grooveis formed in an inner surface of the lock ring grooveof the rim base. A sacrificial anticorrosion materialis embedded in the receiving groove. The sacrificial anticorrosion materialincludes metal such as zinc and aluminum that has a greater ionization tendency than iron that is a base material of the rim baseand the lock ring. Corrosion of the rim baseand the lock ringcan be suppressed by ionization of the sacrificial anticorrosion material

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Tokyo, Japan

Zulkaizam Asri Bin Kassim Mohd