The constitution where revolution it connects

摘要

PROBLEM TO BE SOLVED: To provide an expansion joint for a ceiling capable of absorbing variation in all directions within a constitution and actuation of the pitch width.;SOLUTION: The expansion joint 1 is provided with a holder member 2 connected to be rotatable and slidable in the longitudinal direction through a holder fixing part 5 at one side frame body 7A and an arm member 3 connected to be rotatable and slidable in the breadthwise direction between the frame body through a sliding member 4 formed in the middle of the breadthwise direction of the frame body of the holder member 2 building at the other end. The connecting axis and rotary axis of the holder member 2 and the arm member 3 are formed upper than the respective connection and rotary axes of the frame body 7A and the holder member 2, and the frame body 7B and the arm member 3.;COPYRIGHT: (C)2004,JPO