US 10,240,637 B2Granted

Bearing structure

AssigneeSubaru Corporation

InventorsYuya Kuramoto, Tomoaki Sugiura

Life of this patent

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Abstract

A bearing structure includes a shaft member coupled to a motor, two bearings on the shaft member with a distance therebetween in an axial direction, and a housing rotatable relative to the shaft member by means of the bearings, and an electrically-conductive seal member provided between the shaft member and the housing and abutting on the shaft member and the housing. The bearings include inner and outer rings fitted to an outer peripheral surface of the shaft member and an inner peripheral surface of the housing, respectively. The shaft member, housing, and seal member constitute an oil passage. At least one of an abutment portion where the seal member abuts on the shaft member or an abutment portion where the seal member abuts on the housing has a guide groove that guides oil entering the abutment portion from the oil passage to an external space of the oil passage.

Claims17

Dependent claims

A bearing structure comprising:

a shaft member coupled to a motor;
a pair of bearings disposed around the shaft member with a distance between the bearings in an axial direction;
a housing rotatable relative to the shaft member by means of the pair of bearings;
and
an electrically-conductive seal member provided between the shaft member and the housing and abutting on the shaft member and the housing,
wherein inner rings of the bearings are fitted to an outer peripheral surface of the shaft member,
wherein outer rings of the bearings are fitted to an inner peripheral surface of the housing,
wherein the shaft member, the housing, and the seal member constitute an oil passage, and
wherein at least one of an abutment portion where the seal member abuts on the shaft member or an abutment portion where the seal member abuts on the housing has a guide groove configured to guide oil entering the abutment portion from the oil passage to an external space of the oil passage.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/814,039Filed 15 Nov 2017
Priority: JP 2016-24945822 Dec 2016
Published: US 2018/0180100 A128 Jun 2018
Granted: 26 Mar 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

F16C 33/7816
With a diaphragm, disc, or ring, with or without resilient members: details of the sealing or parts thereof, e.g. geometry, material
F16C 19/52
Bearings with rolling contact, for exclusively rotary movement: with devices affected by abnormal or undesired conditions
F16C 19/54
Bearings with rolling contact, for exclusively rotary movement: systems consisting of a plurality of bearings with rolling friction
F16C 33/583
Raceways; Race rings: details of specific parts of races