Turbocharger
OwnerKatsunori Hayashiinventor
Life of this patent
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Abstract
A turbocharger includes a bearing housing, a variable displacement mechanism, and a restricting member. The variable displacement mechanism includes a nozzle ring and a drive ring. The restricting member includes a flange part, a drive ring guide pin part, and a phase determining pin part. The flange part straddles a first surface of the nozzle ring facing the bearing housing and a second surface of the drive ring facing the bearing housing so that a position thereof with respect to the nozzle ring is fixed. The drive ring guide pin part is formed integrally with the flange part and disposed in a first hole formed on the first surface. The phase determining pin part is formed integrally with the flange part and disposed in a second hole formed on a third surface of the bearing housing facing the variable displacement mechanism.
Claims17
A turbocharger comprising:
- a bearing housing rotatably supporting a rotating shaft to which a turbine wheel is fixed;
- a variable displacement mechanism surrounding the turbine wheel and configured to guide a fluid to the turbine wheel;
- and
- a plurality of restricting members provided between the bearing housing and the variable displacement mechanism,
- wherein the variable displacement mechanism includes:
- a nozzle ring surrounding the turbine wheel in a circumferential direction with a rotation axis of the rotating shaft as a center;
- and
- a drive ring surrounding the nozzle ring in the circumferential direction,
- wherein the nozzle ring has a first surface facing the bearing housing,
- wherein the drive ring has a second surface facing the bearing housing,
- wherein the bearing housing has a third surface facing the variable displacement mechanism,
- wherein at least one restricting member of the plurality of restricting members includes:
- a flange part which straddles the first surface and the second surface so that a position of the flange part with respect to the nozzle ring is fixed;
- a first pin formed integrally with the flange part and disposed in a first hole formed on the first surface;
- and
- a second pin formed integrally with the flange part and disposed in a second hole formed on the third surface,
- wherein the second pin is fixed to the bearing housing,
- wherein the second pin is fixed to the second hole, and a diameter of the first pin is smaller than a width of the first hole, so that the first pin is movable in the first hole in a radial direction intersecting the rotation axis, and
- wherein the second pin and the first pin extend in an axial direction of the rotation axis and the diameter of the first pin is uniform along the axial direction and larger than a diameter of the second pin.
Dependencies are inferred from the claim text.