| CPC F16H 1/32 (2013.01) [F16H 55/0833 (2013.01); F16H 55/16 (2013.01)] | 6 Claims |
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1. A gear mechanism comprising:
a gear including external teeth, the external teeth including a plurality of tooth parts defined by a cycloid curve;
a plurality of contacting members disposed on an outer side and in a circumferential direction of the external teeth, the external teeth being brought into pressure contact with the plurality of contacting members; and
an input shaft configured to eccentrically move the gear, wherein
in order to elastically deform the gear by the pressure contact, a plurality of through holes penetrating the gear in a thickness direction of the gear are formed in the gear in the circumferential direction of the gear, the plurality of through holes include first through holes and second through holes, the second through holes formed in tooth bottom parts between the tooth parts adjacent to each other,
the cycloid curve extends without the external teeth interfering with the plurality of contacting members, and
the gear is eccentrically rotated while being elastically deformed in a state in which the external teeth are always pressed against the plurality of contacting members.
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