SPEED REDUCTION MECHANISM

When viewed in the axial direction of a pinion gear (31), the center (C1) of a pinion main body (31b) and the center (C2) of a helical tooth (31c) are offset from each other, the helical tooth (31c) has a larger diameter than the pinion main body (31b), and the pinion main body (31b) partially protr...

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Hauptverfasser: TOKIZAKI, TEPPEI, KOBAYASHI, MOTOAKI
Format: Patent
Sprache:eng
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Zusammenfassung:When viewed in the axial direction of a pinion gear (31), the center (C1) of a pinion main body (31b) and the center (C2) of a helical tooth (31c) are offset from each other, the helical tooth (31c) has a larger diameter than the pinion main body (31b), and the pinion main body (31b) partially protrudes outside an imaginary circle (VC) that forms the outer shape of the helical tooth (31c). A cross-sectional shape of the pinion gear (31) can be made non-circular with the pinion main body (31b) partially protruding outside the imaginary circle (VC) that forms the outer shape of the helical tooth (31c).