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Belt type continuous variable transmission, power unit having the belt type continuous variable transmission, vehicle mounting thereon the belt type continuous variable transmission, and sheave for continuous variable transmission
Belt type continuous variable transmission, power unit having the belt type continuous variable transmission, vehicle mounting thereon the belt type continuous variable transmission, and sheave for continuous variable transmission
A belt type continuous variable transmission comprises a primary sheave, a secondary sheave, and a belt. The primary sheave comprises a first sheave body, a second sheave body that forms between it and the first sheave body a belt groove, about which a belt is entrained, a plurality of push bodies that slide the second sheave body according to centrifugal forces to change a width of the belt groove, and a plurality of stoppers that restrict movements of the push bodies by contacting with outer surfaces of the push bodies when the second sheave body reaches a position of minimum transmission gear ratio, in which the belt groove is made smallest in width. The stoppers are shaped to accelerate partial wear of the outer surfaces of the push bodies.
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