Patent ID: 11927260
Assignee: ENPLAS CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 13:
14. An apparatus for suppressing noise produced in a planetary gear device, comprising:
an inner gear with a plurality of first raised portions and a contacting portion that is located between adjacent first raised portions, wherein both the plurality of the first raised portions and the contacting portion are formed on an outer peripheral surface of the inner gear; and
a housing with a second raised portion formed on an inner peripheral surface of the housing, wherein the housing is configured to contain the inner gear such that the inner gear is a floating inner gear with a gap that is provided between the inner peripheral surface of the housing and the outer peripheral surface of the inner gear,
wherein movement of the inner gear within the housing is limited through contact of one of the plurality of first raised portions and the second raised portion, and movement within the housing is limited through contact of the contacting portion and the inner peripheral surface of the housing, and
wherein an opening is formed on an inside of the contacting portion of the inner gear and is oriented in an axial direction of the inner gear.