Interior trim member of work vehicle and method of manufacturing the same

A method of manufacturing a interior trim member which has a panel-shape, is incorporated in an incorporating portion of a work vehicle, and has a desired curved shape in which a skin member is integrally covered on a front surface, the method being characterized by comprising:

• arranging a skin member along a cavity of at least one of a pair of upper and lower molds so as to come close contact,
• preliminary arranging a structure member which is light and is made of a hard thermosetting resin having a rigidity in a non-interference region of a cavity of the other mold which is not interfered with an interference body existing in the incorporating portion of at least one of right and left side edge portions which are orthogonal to an attaching and detaching direction parallel to a panel surface of the interior trim member at a time of being detached and attached to the interference body;
• and
• filling a cushion member at least in an interference region interfering with the interference body formed between a mold having an upper mold and a lower mold at a time of closing the mold, and the skin member and the structure member, so as to integrally form with the skin member and the structure member.