Sealing member, rolling bearing, thin motor, and bearing device
AssigneeNsk Ltd.
InventorSeizo Miyazaki
Life of this patent
Estimating the term…
Abstract
The sealing members 14a, 14b comprise a film member produced by forming an aluminum or alumina deposition film on at least one side surface of a film-like core material. One side surface outer circumferential rim part of the sealing members is bonded and fixed on the outer end surface of outer rings 9, 9 constituting the rolling bearings 4, 4.
Claims17
A sealing member adapted to a rolling bearing, wherein said rolling bearing comprises an inner ring, an outer ring, and a plurality of rolling elements rotatably disposed therebetween and defines a space accommodating said rolling elements and having at least one end part opening opened in the axial direction thereof, and wherein the space is formed between the inner circumferential surface of the outer ring and the outer circumferential surface of the inner ring, said sealing member comprising:
- a first portion substantially covering at least a part of the end part opening of the space;
- and
- a second portion being bonded and fixed to an axial direction end surface of one of the inner and outer rings.
A rolling bearing comprising:
- an inner ring;
- an outer ring;
- a plurality of rolling elements rotatably disposed therebetween and accommodated with a space which has at least one end part opening opened in the axial direction thereof and is formed between the inner circumferential surface of the outer ring and the outer circumferential surface of the inner ring;
- and
- a sealing member including a first portion substantially covering at least a part of the end part opening of the space, and a second portion being bonded and fixed to the axial direction end surface of one of the inner and outer rings.
A thin motor comprising:
- a first member on which a stator is supported and fixed;
- a second member on which a rotor facing the stator is supported and fixed;
- and
- a rolling bearing relatively and rotatably combining said second member with said first member;
- wherein the outer diameter size of the rotor is seven times or more as much as the axial direction size of the motor as a whole, and
- wherein said rolling bearing comprises,
- an inner ring;
- an outer ring;
- a plurality of rolling elements rotatably disposed therebetween and accommodated with a space which has at least one end part opening opened in the axial direction thereof and is formed between the inner circumferential surface of the outer ring and the outer circumferential surface of the inner ring;
- and
- a sealing member including a first portion substantially covering at least a part of the end part opening of the space, and a second portion being bonded and fixed to the axial direction end surface of at least one of said inner and outer rings.
A bearing device comprising:
- an axis side member including a cylindrical part with an inner ring mounted externally, and an axis mounted internally, and an outward flange part disposed on one end side in the axial direction;
- a housing including a ring part with the outer ring mounted internally, and an outward flange part disposed on the other end part in the axial direction;
- a rolling bearing disposed between said axis side member and said housing and having outside surface covered by said outward flange part of said axis side member;
- a sheet covering a gap between the inner ring and the outer ring and disposed externally on the other end side in the axial direction of the bearing device, the sheet being bonded on at least one of the outward flange part of the housing, the inner ring and the outer ring by a detachable bonding force.
Dependencies are inferred from the claim text.