DRIVING FORCE TRANSMISSION DEVICE

摘要

A driving force transmission device includes an inner ring (4); an outer ring (5); a roller pair (23) constituted by a first roller (23a) and a second roller (23b); an elastic member (24); a first cage (31) including a first pressing portion (37); a second cage (32) including a second pressing portion (41); a first guide member; a second guide member; and an electromagnetic clutch (7) including an armature (71) connected to the first and second guide members. Along with rotation of the first cage (31) toward the circumferential second side (Y2), the first pressing portion (37) presses the first roller (23 a) toward the circumferential second side (Y2). Along with rotation of the second cage (32) toward the circumferential first side (Y1), the second pressing portion (41) presses the second roller (23b) toward the circumferential first side (Y1).