Resin-molded product and method of manufacturing the same
AssigneesNippondenso Co., Ltd., Shimizu Industry Co., Ltd.
InventorsChiharu Kamiya, Yoshihide Kanai
Life of this patent
Estimating the term…
Abstract
Packing is fixed to and adheres to a molded damper on the outer periphery of the both sides of the damper body like a frame. To prevent defective molded products, a portion of the damper body having the packing disposed thereon is made thicker than a portion without the packing so that resin can flow into the portion where the packing is disposed before it goes into the portion without the packing.
Claims16
A resin-molded product comprising:
- a resin-made body;
- a porous elastic member disposed on a surface of a portion of said resin-made body for providing an airtight seal, wherein said porous elastic member is disposed on a first area of said surface of said resin-made body and is not disposed on a second area of said surface of said resin-made body exclusive of resin inlets;
- wherein said porous elastic member disposed on said surface of said resin-made body is fixed to and adheres to said resin-made body with molten resin of said resin-made body sinking into a contact surface of said porous elastic member and wherein a portion of said resin-made body on which said porous elastic member is disposed is thicker than a portion of said resin-made body on which said porous elastic member is not disposed.
A damper for controlling a flow of air, said damper comprising:
- a resin-made damper body molded in a substantially rectangular shape;
- a porous elastic member disposed on an outer periphery of said resin-made damper body as a frame to define a first area on said resin-made damper body where said porous elastic member is disposed thereon and a second area on said resin-made damper body exclusive of resin inlets where said porous elastic member is not disposed thereon;
- wherein said porous elastic member disposed on said surface of said resin-made damper body is fixed to and adheres to said resin-made damper body, and wherein said first area on which said porous elastic member is disposed on said resin-made damper body is thicker than said second area on which said porous elastic member is not disposed thereon.
A method of manufacturing a resin-molded product where a porous elastic member disposed only on a portion of a resin-made body for forming an airtight seal is fixed and adheres to said resin-made body, said method comprising the steps of:
- cutting said porous elastic member into a predetermined shape out of porous elastic member material;
- disposing said porous elastic member at a predetermined position in an in-mold space formed by resin-molding molds;
- injecting molten resin into a portion of said in-mold space where said porous elastic member is disposed in said in-mold space;
- and
- molding said resin-made body with injected resin and adhering said porous elastic member integrally to said resin-made body, wherein a space where said porous elastic member is disposed is farther from a center of said in-mold space than spaces of said in-mold space wherein said porous member is not disposed.
A method of manufacturing a resin-molded product, said method comprising the steps of:
- cutting a porous elastic member into a predetermined shape out of porous elastic member material;
- disposing said porous elastic member at a predetermined position on an outer periphery of an in-mold space formed by resin molding molds so that said porous elastic member is disposed at a portion of the in-mold space that is higher than any other portion of the in-mold space;
- injecting molten resin into said in-mold space from a portion located almost symmetrically with respect to a parting face of said porous elastic member;
- and
- molding a resin-made body with injected resin and adhering said porous elastic member integrally to said resin-made body.
Dependencies are inferred from the claim text.