Fitting structure

A fitting structure for fitting a first member and a second member together, the fitting structure comprising:

• a fitting projection protruding from a second member opposed surface of the first member opposed to the second member toward the second member;
• a receptacle protruding from an opposite surface of the second member on an opposite side from the second member opposed surface in an opposite direction from the second member opposed surface, the receptacle including an internal receiving space communicating with a through hole in the second member, wherein
• the receptacle including:
• a fitting portion having a plate shape protruding from the opposite surface;
• a supporting portion protruding from the opposite surface such that at least a section of an inner surface of the supporting portion is opposed to an inner surface of the fitting portion;
• and
• two slits provided between two edges of the fitting portion extending in a protruding direction in which the fitting portion protrudes and edges of the supporting portion adjacent edges of the fitting portion, respectively, the slits communicating with the receiving space,
• the receiving space is defined by the fitting portion and the supporting portion, and
• the fitting projection includes a first section disposed in the receiving space and a second section fitted to the fitting portion.