Intake device and manufacturing method of valve body
AssigneeAisin Seiki Kabushiki Kaisha
InventorsTakuya Kato, Masato Ishii
Life of this patent
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Abstract
An intake device includes: an intake port; and a valve body which is disposed in the intake port and is rotated around a rotation axial line between an open/closed position, in which the valve body includes a valve body main body made of a resin, an elastically deformable seal portion formed to extend along an outer circumferential portion of the valve body main body, and a projection which is provided at a surface part adjacent to a region in which the seal portion is formed in the valve body main body, and has a shape that gradually becomes tapered toward a tip end side.
Claims8
A manufacturing method of a valve body comprising:
- preparing a valve body main body which is disposed to be rotatable in an intake port and which is made of a resin, the valve body main body including a projection which is provided at a surface part in the valve body main body connected to a region of the valve body main body in which an elastically deformable seal portion is configured to be formed, the projection protruding beyond the surface part and including a shape that gradually becomes tapered toward a tip end side of the projection;
- disposing the prepared valve body main body in a valve body main body disposing region of a seal portion molding die;
- applying a mold clamping load to the projection disposed in the valve body main body disposing region of the seal portion molding die by the seal portion molding die;
- and
- forming the seal portion by allowing a seal portion forming material to flow into the seal portion disposing region of the seal portion molding die in a state where the mold clamping load is applied to the projection,
- wherein the projection includes a first projection provided along the forming region of the seal portion on one surface side of the valve body main body, and a second projection provided along the forming region of the seal portion on the other surface side of the valve body main body, and
- wherein the first projection and the second projection are disposed at a position at which a moment caused by a mold clamping load is not generated when the mold clamping load is applied to the first projection and the second projection by a seal portion molding die.
An intake device comprising:
- an intake port;
- and
- a valve body which is disposed in the intake port and is rotated around a rotation axial line between an open/closed position,
- wherein the valve body includes a valve body main body made of a resin, an elastically deformable seal portion formed to extend along an outer circumferential portion of the valve body main body, and a projection which is provided at a surface part in the valve body main body that is connected to a region of the valve body main body in which the seal portion is formed, the projection protruding beyond the seal portion and including a shape that gradually becomes tapered toward a tip end side of the projection.
Dependencies are inferred from the claim text.