Valve device

Patent metadata

Field	Value
Publication number	US-9556825-B2
Application number	US-201313862794-A
Country	US
Kind code	B2
Filing date	Apr 15, 2013
Priority date	Jun 25, 2012
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

Abstract

A valve device has a valve that opens and closes a passage, and a cantilever bearing member rotatably supporting a rotating shaft of the valve. The cantilever bearing member has rolling-element bearings arranged in series in an axial direction of the rotating shaft. One of the rolling-element bearings located the closest to the passage has a rolling element, an inner race, an outer race and a seal portion. A space is defined between the inner race and the outer race to receive the rolling element. The seal portion made of rubber tightly seals the space on a side adjacent to the passage.

First claim

What is claimed is:

1. A valve device comprising:
a valve that opens and closes a passage; and
a cantilever bearing member that rotatably supports a rotating shaft of the valve on only one side of the passage, wherein
the cantilever bearing member has a plurality of rolling-element bearings that are arranged in series in an axial direction of the rotating shaft to be directly adjacent to each other,
one of the plurality of rolling-element bearings is located the closest to the passage among the plurality of rolling-element bearings, and the rolling-element bearing that is located closest to the passage has
a rolling element,
an inner race and an outer race between which a space is defined to receive the rolling element, and
a seal portion made of rubber and steel, such that the seal portion is configured to tightly seal the space on a side adjacent to the passage, wherein the rubber contacts both the inner race and the outer race.

2. The valve device according to claim 1 , wherein gas exhausted from an internal combustion engine passes through the passage.

3. The valve device according to claim 1 , wherein
the rubber is a rubber plate, the steel is a steel plate, and the rubber plate is located closer to the passage than the steel plate.

4. The valve device according to claim 3 , wherein the rubber plate forms a liquid-tight lip seal with an S-shaped cross-section adjacent to the inner race.

5. A valve device comprising:
a valve that opens and closes a passage; and
a cantilever bearing member that rotatably supports a rotating shaft of the valve on only one side of the passage, wherein
the cantilever bearing member has a plurality of rolling-element bearings that are arranged in series in an axial direction of the rotating shaft to be directly adjacent to each other,
adjacent two of the plurality of rolling-element bearings are in contact with each other in the axial direction,
one of the plurality of rolling-element bearings is located the closest to the passage among the plurality of rolling-element bearings, the rolling-element bearing that is located closest to the passage has
a rolling element,
an inner race and an outer race between which a space is defined to receive the rolling element, and
a seal portion made of rubber and steel, such that the seal portion is configured to tightly seal the space on a side adjacent to the passage, wherein the rubber contacts both the inner race and the outer race.

Assignees

• Denso Corp

Inventors

• Kobayashi Takashi
• Torii Katsuya

Classifications

• F02M26/67

  Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators · CPC title

• F16K1/225

  the axis of rotation having only one bearing · CPC title

• F02M26/70 Primary

  Flap valves; Rotary valves; Sliding valves; Resilient valves · CPC title

• F02M26/54

  Rotary actuators, e.g. step motors · CPC title

• F16K31/535

  for rotating valves (F16K31/54 takes precedence) · CPC title