# US 12,007,043 B2 · Valve structure and turbocharger

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- Number: US 12,007,043 B2
- Document ID: US12007043B2
- Status: Granted
- Kind: B2
- Application number: 18/050,617
- Filed: 2022-10-28
- Published: 2023-03-09
- Granted: 2024-06-11
- Earliest claimed: 2020-09-03
- Assignees: IHI Corporation
- Applicants: IHI Corporation
- Inventors: Kuniaki Iizuka; Akimitsu Yakushiji; Koichi Takahashi; Shohei Sato
- Web page: https://patentgrep.com/patent/US12007043B2

## CPC

- F16K 47/012: {by means of a resilient damping element}
- F02B 37/18: by bypassing exhaust {from the inlet to the outlet of turbine or to the atmosphere}
- F16F 1/18: Leaf springs {(planar springs in general F16F1/027; "Belleville"-type springs with generally radial arms F16F1/324)}
- F16F 15/073: using only leaf springs
- F16K 1/2007: {specially adapted operating means therefor (operating means per se F16K31/00)}
- F16K 1/36: Valve members (for double-seat valves F16K1/44 {; for butterfly valves F16K1/222, F16K1/223})
- Y02T 10/12: Improving ICE efficiencies
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A valve structure includes: a valve unit including a valve body, a shaft portion extending from the valve body, and a separating portion provided on the shaft portion and spaced apart from the valve body; a mounting plate located between the valve body and the separating portion and including an insertion hole into which the shaft portion is inserted; a holding portion including a first holding surface provided on the mounting plate, and a second holding surface provided on the valve unit and spaced apart from the first holding surface; a protrusion provided on one of the valve unit and the mounting plate, an end of the protrusion protruding beyond the first and second holding surfaces; and an elastic body including a contact portion located between the first and second holding surfaces, and a pressed portion located inside or outside the contact portion and contacting the protrusion.

## Claims

### Claim 1

A valve structure comprising:
a valve unit including a valve body, a shaft portion extending from the valve body in an axial direction, and a separating portion provided on the shaft portion and spaced apart from the valve body in the axial direction;
a mounting plate located between the valve body and the separating portion and including an insertion hole into which the shaft portion is inserted;
a holding portion including a first holding surface provided on the mounting plate, and a second holding surface provided on the valve unit and spaced apart from the first holding surface in the axial direction;
a protrusion provided on one of the valve unit and the mounting plate, an end of the protrusion protruding in the axial direction beyond the first holding surface and the second holding surface; and
an elastic body including a contact portion located between the first holding surface and the second holding surface, and a pressed portion located inside or outside the contact portion in a radial direction of the shaft portion and contacting the protrusion.

### Claim 2 (depends on 1)

The valve structure according to claim 1, comprising an opposing portion provided on the other of the valve unit and the mounting plate and opposed to the protrusion in the axial direction.

### Claim 3 (depends on 1)

A turbocharger comprising a valve structure according to claim 1.

### Claim 4 (depends on 2)

A turbocharger comprising a valve structure according to claim 2.