公开(公告)号：US20210277949A1

公开(公告)日：2021-09-09

申请号：US17193781

申请日：2021-03-05

Applicant: Seiko Instruments Inc.

Inventor： Takayuki KOSAKA ,  Takayuki SATODATE ,  Keisuke ABO

IPC: F16C33/66

Abstract: A rolling bearing capable of achieving reduction in torque is provided. The rolling bearing includes an inner ring and an outer ring disposed coaxially with each other, a rolling element disposed between the inner ring and the outer ring, a seal member configured to cover an area between the inner ring and the outer ring from an outside in an axial direction, and filled grease disposed between the rolling element and the seal member. The filled grease includes a first ring-like part which extends to form a circumferential shape centering on a common axis of the inner ring and the outer ring, and which has contact with one of the inner ring and the outer ring, and a second ring-like part which extends to form a circumferential shape centering on the common axis, which is connected to the first ring-like part at an outer side in the axial direction, and which has contact with the seal member.

公开(公告)号：US20200252009A1

公开(公告)日：2020-08-06

申请号：US16773386

申请日：2020-01-27

Applicant: Seiko Instruments Inc.

Inventor： Akihiro IINO ,  Takayuki SATODATE

IPC: H02N10/00 ,  G06F3/01 ,  G06F3/041 ,  H05K5/00 ,  F03G7/06

Abstract: The present invention is provided to prevent intrusion of dust, moisture, and the like, and simulatively deliver a kinetic operation feeling in response to an operation of an operator, and generate vibrations as necessary and separately from the operation of the operator. There is provided an inertial force imparting device including a stator, a mover that is arranged to be movable relative to the stator in a movable direction, a weight attached to the mover, an actuator unit that includes a shape memory alloy wire provided between the stator and the mover, instantaneously displaces the mover in the movable direction, and delivers an inertial force to the outside based on the displacement, and an elastic member that biases the mover toward the stator side along the movable direction, in which the shape memory alloy wire changes in length according to temperature, and changes the interval between the mover and the stator by expansion and contraction according to energization heating.