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    • 7. 发明公开
    • Planetary roller drive
    • 行星齿轮摩擦
    • EP1091145A3
    • 2003-06-11
    • EP00121685.2
    • 2000-10-04
    • SUMITOMO HEAVY INDUSTRIES, LTD.
    • Minegishi, KiyojiTamenaga, Jun
    • F16H13/08F16H57/02
    • F16H13/06
    • A shaft coupling structure (56, 96, 256) configured to maintain and exert inherent functions as well as to utilize surrounding empty space unused to provide its own speed change function. The shaft coupling structure (56, 96, 256) includes a first shaft (52A, 252A) and a second shaft (58, 102, 258) coaxially opposed to each other, and a member having a shaft insertion hole to which the first shaft (52A, 252A) and the second shaft (58, 102, 258) are inserted at the vicinities of their shaft ends, rotational power transmission between the shafts being effected by the member. The member is divided into first-shaft side and second-shaft side so as to form a first transmission member (68, 168, 268) and a second transmission member (70, 170, 270), respectively. A plurality of planetary rollers (72, 172, 272) and a ring roller (76, 176, 276) are arranged around the first transmission member (68, 168, 268). The plurality of planetary rollers (72, 172, 272) making rolling contact with the inner periphery of the ring roller (76, 176, 276). The ring roller (76, 176, 276) is engaged with an external non-rotational member for rotational restraint. Moreover, the second transmission member (70, 170, 270) is configured to support the plurality of planetary rollers (72, 172, 272) rotatably. Then, the second transmission member (70, 170, 270) makes rotation integral with the revolution of the planetary rollers (72, 172, 272) around the first transmission member (68, 168, 268).