A centrifugal clutch comprising: a drive plate to be rotatably driven together with a driven pulley in response to drive force of an engine; a clutch outer having, outside the drive plate , a cylindrical surface provided concentrically with the drive plate ; a clutch weight having a clutch shoe formed to extend along a circumferential direction of the drive plate and facing the cylindrical surface of the clutch outer , one end side of the clutch weight in the circumferential direction being turnably attached onto the drive plate through a swing support pin and a pin slide hole , the other end side displacing toward a cylindrical surface side of the clutch outer ; a protruding body provided to protrude toward the clutch weight from the drive plate ; a driven portion provided at the clutch weight and configured to climb on the protruding body upon displacement of the other end side of the clutch weight ; and a pivot-point-side slide member provided between the swing support pin and the pin slide hole to slide the swing support pin and the pin slide hole , wherein the swing support pin is provided at one of the drive plate or the clutch weight , and is formed to extend toward the other one of the drive plate or the clutch weight , characterized in that the pin slide hole is provided at the other one of the drive plate or the clutch weight and is formed in a long hole shape allowing backward displacement of one end side of the clutch weight in a rotary drive direction of the drive plate , and the swing support pin is slidably displaceably fitted in the pin slide hole through the pivot-point-side slide member , wherein the pin slide hole is formed as a long hole with such a length that collision with the swing support pin is avoided even in a case where one end side of the clutch weight displaces backward in the rotary drive direction of the drive plate . a drive plate to be rotatably driven together with a driven pulley in response to drive force of an engine; a clutch outer having, outside the drive plate , a cylindrical surface provided concentrically with the drive plate ; a clutch weight having a clutch shoe formed to extend along a circumferential direction of the drive plate and facing the cylindrical surface of the clutch outer , one end side of the clutch weight in the circumferential direction being turnably attached onto the drive plate through a swing support pin and a pin slide hole , the other end side displacing toward a cylindrical surface side of the clutch outer ; a protruding body provided to protrude toward the clutch weight from the drive plate ; a driven portion provided at the clutch weight and configured to climb on the protruding body upon displacement of the other end side of the clutch weight ; and a pivot-point-side slide member provided between the swing support pin and the pin slide hole to slide the swing support pin and the pin slide hole , wherein the swing support pin is provided at one of the drive plate or the clutch weight , and is formed to extend toward the other one of the drive plate or the clutch weight , characterized in that the pin slide hole is provided at the other one of the drive plate or the clutch weight and is formed in a long hole shape allowing backward displacement of one end side of the clutch weight in a rotary drive direction of the drive plate , and the swing support pin is slidably displaceably fitted in the pin slide hole through the pivot-point-side slide member , wherein the pin slide hole is formed as a long hole with such a length that collision with the swing support pin is avoided even in a case where one end side of the clutch weight displaces backward in the rotary drive direction of the drive plate . <EOS>