Patent ID: 8567152

Claim:
A cushion material fastening structure comprising: an interior trim part, made of synthetic resin, that is provided with a slit-shaped opening, an elastic deformation portion at least part of which projects inward in the slit-shaped opening, a plate-shaped catching protrusion and a plate-shaped holding portion, wherein at least one of the plate-shaped catching protrusion and the plate-shaped holding portion functions as the elastic deformation portion, and the plate-shaped catching protrusion is provided with a catching lug that projects toward the plate-shaped holding portion in such a manner that the slit-shaped opening is formed between the catching lug and the plate-shaped holding portion; and a cushion material, having a sheet shape, that is caught by the elastic deformation portion by being plunged into the slit-shaped opening with a plunged portion of the cushion material folded while elastically deforming the elastic deformation portion, wherein the cushion material is plunged into the slit-shaped opening while one or both of the plate-shaped catching protrusion and the plate-shaped holding portion are elastically deformed, and an insertion portion of the cushion material that is inserted into the slit-shaped opening is caught in a state where the insertion portion is pinched between the catching lug and the plate-shaped holding portion, and the cushion material has a cut that is formed near the plunged portion and is substantially parallel to the slit-shaped opening, and wherein the cushion material is fastened to the interior trim part.