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AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsYoshihiro Mizuno, Kisaburo Hayakawa, Hiroyuki Nishizawa, Hiroyuki Yamaguchi, Kiyokazu Sunami
Estimating the term…
Assuming that N1 and N2 are the respective numbers of pinion rollers (23, 63); ρ1 is the ratio between the inner diameter of a ring roller (22) and the outer diameter of a sun roller (21); and ρ2 is the ratio between the inner diameter of a ring roller (62) and the outer diameter of a sun roller (61); and it holds that N1=3, and (ρ1+1)×(ρ2+1)≧24+16×20.5, in the case where N2=3, then it holds that ρ1≧0.102×(ρ1+1)×(ρ2+1)+1.196, and ρ1≦min[0.204×(ρ1+1)×(ρ2+1)+3.123, 7+4×30.5], and in the case where N2=4, then it holds that ρ1≧(2−20.5)×(ρ1+1)×(p2+1)/4−1, and ρ1≦min[0.185×(ρ1+1)×(ρ2+1)+1.320, 7+4×30.5].
A traction drive mechanism comprising a first planetary roller mechanism and a second planetary roller mechanism that are connected in series, the first planetary roller mechanism including a plurality of first planetary rollers rotatably supported by a first carrier, the first planetary rollers being held in contact between a first sun roller and a first ring roller, the second planetary roller mechanism including a plurality of second planetary rollers rotatably supported by a second carrier, and the second planetary rollers being held in contact between a second sun roller and a second ring roller, wherein
Dependencies are inferred from the claim text.