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US 7,441,542 B2Granted
Butterfly valves and intake air control devices for internal combustion engines
AssigneesAisan Kogyo Kabushiki Kaisha, Denso Corporation
InventorsHiroshi Asanuma, Takuji Nakamura
Life of this patent
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Abstract
The present invention includes a butterfly valve that has a resin valve body and a shaft. The shaft includes a first shaft member and a second shaft member. The first and second shaft members are integrated with the valve body. The first and second shaft members are spaced from each other in an axial direction by a predetermined distance.
Claims16
A butterfly valve comprising:
- a support member defining a flow path;
- a plate-like valve body positioned within the flow path for opening and closing the flow path;
- and
- a shaft integrated with the valve body by an insertion molding process;
- wherein the shaft comprises a first shaft member and a second shaft member, and
- wherein the first and second shaft members are spaced from each other in an axial direction by a predetermined distance.
3 more elements
A butterfly valve comprising:
- a support member defining a flow path;
- a valve body disposed within the flow path and rotatable about a rotational axis;
- a shaft comprising a first shaft member and a second shaft member disposed on opposite sides of the valve body along the rotational axis;
- wherein the valve body includes shaft covering portions, so that the first and second shaft members are inserted into the shaft covering portions;
- wherein the first shaft member and the second shaft member are spaced from each other along the rotational axis by a predetermined distance;
- and
- wherein the shaft covering portions include first sleeve portions;
- and
- bearings interposed between the support member and the first sleeve portions, so that the shaft covering portions are rotatably supported by the support member via the bearings.
6 more elements
A butterfly valve comprising:
- a support member defining a flow path;
- a valve body disposed within the flow path and rotatable about a rotational axis;
- a shaft comprising a first shaft member and a second shaft member disposed on opposite sides of the valve body along the rotational axis;
- wherein the valve body includes shaft covering portions, so that the first and second shaft members are inserted into the shaft covering portions;
- wherein the first shaft member and the second shaft member are spaced from each other along the rotational axis by a predetermined distance;
- wherein the shaft covering portions include sleeve portions;
- and
- wherein the first shaft member and the second shaft member have shaft portions extending outward from the sleeve portions;
- bearings interposed between the support member and the shaft portions of the first and second shaft members, so that the first and second shaft members are rotatably supported by the support member via the bearings;
- and
- seal members interposed between the support member and the sleeve portions of the shaft covering portions.
8 more elements
Dependencies are inferred from the claim text.