Resin molded article
AssigneeCanon Kabushiki Kaisha
InventorsHisashi Taniguchi, Masakatsu Iwata, Masanori Kaneko
Life of this patent
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Abstract
The present invention relates to an resin molded article, which is molded, using at least a first resin material and a second resin material having substantially no compatibility with one another, by an insert molding or a two-color molding to be in a state where a first member and a second member are incorporated. A clearance is produced between the first member and the second member.
Claims1
A resin molded article which is molded, using at least a first resin material, a second resin material and a third resin material having substantially no compatibility with one another, by an insert molding or a three-color molding to be in a state where (i) a roller member;
- (ii) a shaft member, which axially supports the roller member in a freely rotatable manner;
- and (iii) an elastic member having a cylindrical shape provided at an outer peripheral surface of the roller member are incorporated,
- wherein a mold shrinkage factor of the shaft member is greater than that of the roller member so that a clearance is produced between the roller member and the shaft member,
- wherein a mold shrinkage factor of the elastic member is greater than that of the roller member so that the elastic member is able to tighten the roller member, and
- wherein the shaft member has a slip stopping portion to regulate movement of the roller member in a shaft direction and the roller member has a plurality of protrusions, which protrude in a direction of a radius of the roller member, to regulate movement of the elastic member in the shaft direction and a rotating direction.
Dependencies are inferred from the claim text.