Patent ID: 7637828

Claim:
A belt-type continuously variable transmission, comprising: a primary sheave which rotates around a rotation axis; a secondary sheave; and a belt wound around the primary sheave and the secondary sheave, wherein the primary sheave includes a first sheave member that can shift in a rotation axis extending direction, a second sheave member shifted from the first sheave member toward one side of the rotation axis extending direction and opposed to the first sheave member, the first sheave member and the second sheave member forming a belt groove around which the belt is wound, a cam plate shifted from the first sheave member toward the other side of the rotation axis extending direction and opposed to the first sheave member, the cam plate and the first sheave member forming a space that narrows toward a radially outside portion of the first sheave member, and a pressing member disposed in the space to narrow the width of the belt groove by shifting toward the radially outside portion of the first sheave member while pressing the first sheave member against the second sheave member by centrifugal force generated by circling of the pressing member around the rotation axis in accordance with rotation of the first sheave member, wherein the first sheave member has a guide member extending toward the cam plate, the cam plate has a slide member having a guide groove engaging with the guide member such that the slide member can slide relative to the guide member, and a position of a radially outer portion of an end surface of the slide member on the other side of the rotation axis extending direction is shifted toward the one side of the rotation axis extending direction from the position of the radially inner portion of the end surface of the slide member on the other side of the rotation axis extending direction, wherein the slide member has a substantially trapezoidal shape in side view having the radially outer portion shorter than the radially inner portion in the rotation axis direction.