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US 7,031,106 B2Granted
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).
Claims14
A rolling bearing comprising:
- an inner ring, an outer ring, and a plurality of rolling elements rotatably disposed therebetween and a space accommodating said rolling elements and having at least one end part opening opened in an axial direction thereof, wherein the space is formed between the inner circumferential surface of the outer ring and the outer circumferential surface of the inner ring, and
- a sealing film covering said space, said sealing film comprising:
- a first portion substantially covering at least a part of the end part opening of the space;
- a second portion being bonded and fixed to an axial direction extreme endmost surface of one of the inner and outer rings;
- a core layer;
- and
- an aluminum or alumina film disposed on said core layer.
4 more elements
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 film 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.
8 more elements
Dependencies are inferred from the claim text.