Drive arrangement for a unison ring of a variable-vane assembly
US-9429033-B2 · Aug 30, 2016 · US
Bearing structure and turbocharger
US9739311B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9739311-B2 |
| Application number | US-201414568338-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 12, 2014 |
| Priority date | Dec 27, 2013 |
| Publication date | Aug 22, 2017 |
| Grant date | Aug 22, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
A shaft includes: two large-diameter portions; and a small-diameter portion formed between the two large-diameter portions. A bearing includes: an annular body in which to insert the shaft; two bearing surfaces being opposite the large-diameter portions; and an intervening surface located between the two bearing surfaces on an inner circumferential surface of the body, and being opposite the small-diameter portion with a clearance formed between the intervening surface and the small-diameter portion. No anti-corrosion treatment is applied to the large-diameter portions. An anti-corrosion treatment is applied to at least any one of: an exposed portion of an outer peripheral surface of the body of the bearing, which is exposed to the outside of the housing; the intervening surface of the bearing; an opposite end surface of the bearing; and the small-diameter portion of the shaft.
First claim
Opening claim text (preview).
What is claimed is: 1. A bearing structure comprising: a bearing fixed to a housing of a turbocharger with an end surface side of the bearing inserted in a through-hole provided in the housing, and with an opposite end surface side of the bearing exposed to an outside of the housing; and a shaft rotatably supported by the bearing, wherein the shaft includes two large-diameter portions formed respectively in two end sides of the shaft in an axial direction of the shaft, and a small-diameter portion formed between the two large-diameter portions, and being smaller in outer diameter than the large-diameter portions, the bearing includes an annular body in which to insert the shaft, two bearing surfaces formed respectively in two end sides of an inner circumferential surface of the body in the axial direction of the shaft, and being opposite the large-diameter portions, and an intervening surface located between the two bearing surfaces on the inner circumferential surface of the body, and being opposite the small-diameter portion with a clearance formed between the intervening surface and the small-diameter portion, and no anti-corrosion treatment is applied to the large-diameter portions, while an anti-corrosion treatment is applied to at least any one of: an exposed portion of an outer peripheral surface of the body of the bearing, which is exposed to the outside of the housing; the intervening surface of the bearing; the opposite end surface of the bearing; and the small-diameter portion of the shaft. 2. A turbocharger comprising: a housing rotatably housing a shaft rod with a turbine wheel provided to an end of the shaft rod, and with a compressor wheel provided to an opposite end of the shaft rod; a bearing fixed to the housing with an end surface side of the bearing inserted in a through-hole provided in the housing, and with an opposite end surface side of the bearing exposed to an outside of the housing; and a shaft rotatably supported by the bearing, wherein the shaft includes two large-diameter portions formed respectively in two end sides of the shaft in an axial direction of the shaft, and a small-diameter portion formed between the two large-diameter portions, and being smaller in outer diameter than the large-diameter portions, the bearing includes an annular body in which to insert the shaft, two bearing surfaces formed respectively in two end sides of an inner circumferential surface of the body in the axial direction of the shaft, and being opposite the large-diameter portions, and an intervening surface located between the two bearing surfaces on the inner circumferential surface of the body, and being opposite the small-diameter portion with a clearance formed between the intervening surface and the small-diameter portion, and no anti-corrosion treatment is applied to the large-diameter portions, while an anti-corrosion treatment is applied to at least any one of: an exposed portion of an outer peripheral surface of the body of the bearing, which is exposed to the outside of the housing; the intervening surface of the bearing; the opposite end surface of the bearing; and the small-diameter portion of the shaft.
Assignees
Inventors
Classifications
for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line (F01D17/167 takes precedence) · CPC title
Turbochargers · CPC title
Coating; Surface treatment · CPC title
in turbochargers · CPC title
- F16C33/121Primary
Use of special materials · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9739311B2 cover?
- A shaft includes: two large-diameter portions; and a small-diameter portion formed between the two large-diameter portions. A bearing includes: an annular body in which to insert the shaft; two bearing surfaces being opposite the large-diameter portions; and an intervening surface located between the two bearing surfaces on an inner circumferential surface of the body, and being opposite the sm…
- Who is the assignee on this patent?
- Ihi Corp
- What technology area does this patent fall under?
- Primary CPC classification F16C33/121. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 22 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).