US 12,253,108 B2
Motor
Seiya Fujimoto, Nagano (JP)
Assigned to MINEBEA MITSUMI Inc., Nagano (JP)
Filed by MINEBEA MITSUMI Inc., Nagano (JP)
Filed on Jan. 2, 2024, as Appl. No. 18/401,997.
Application 18/401,997 is a continuation of application No. 17/651,842, filed on Feb. 21, 2022, granted, now 11,892,033.
Claims priority of application No. 2021-031028 (JP), filed on Feb. 26, 2021.
Prior Publication US 2024/0133424 A1, Apr. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F16C 17/08 (2006.01); H02K 5/173 (2006.01)
CPC F16C 17/08 (2013.01) [H02K 5/1732 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A motor, comprising:
a rotating shaft;
a bearing;
a bearing holder configured to accommodate the bearing, the bearing holder including an one end portion and an other end portion; and
a holder disposed at one end portion side of the bearing holder in a rotating shaft direction; wherein
the holder includes an inner peripheral portion fixed to the rotating shaft and a wall portion protruding in the rotating shaft direction,
the one end portion of the bearing holder includes a wall portion protruding in the rotating shaft direction and a flange portion protruding in a radial direction,
the wall portion of the holder opposes the wall portion of the bearing holder in the radial direction,
a labyrinth structure is formed of the wall portion of the bearing holder, the flange portion of the bearing holder, the inner peripheral portion of the holder, and the wall portion of the holder,
the labyrinth structure includes a plurality of bent paths communicating with the bearing.