| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid-passage structure for a molded article that allows most of a fluid passage to be molded by a molding die and facilitates optimization of the shape and arrangement of a fluid passage. SOLUTION: The fluid-passage structure for a molded article 12 is configured as follows. The molded article is provided with a fluid passage 13 having an opening 13a and a bent part 13b. The opening 13a is located on the inner bottom face 14a of an expanded diameter recess 14 the diameter of which is expanded larger than diameters d1, d2 of the fluid passage 13. A specific passage section 16 from the inner bottom face 14a of the expanded diameter recess 14 to the vicinity of the bent part 13b of the fluid passage 13 is inclined so as to deviate from a direction vertical to the inner bottom face 14a of the expanded diameter recess 14. A passage wall face 12h, forming the specific passage section 16, is formed by machining the wall face 12ha on the side in a direction deviating from the direction vertical to the inner bottom face 14a of the expanded-diameter recess 14. COPYRIGHT: (C)2010,JPO&INPIT
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