Structure and method for clamping built-in component in hollow container

The present invention provides a structure for clamping a built-in component (7A,7B,8) in a hollow container, the container being formed by clamp molding using a pair of a first mold piece (F) and a second mold piece (F), the first mold piece being for forming a first half of the container (Tc), the second mold piece being for forming a second half of the container (Tb), the structure comprising: a first support member secured (1A,1B) to an inner wall surface of the first half of the container (Tc) and having a first connection portion and a first clamp portion; a second support member (2A,2B) secured to an inner wall surface of the second half of the container (Tb) having a second connection portion and a second clamp portion, wherein the built-in component (7A,7B,8) is clamped between the first support member (1A,1B) and the second support member (2A,2B) with the first connection portion and the second connection portion coupled to each other.