| 摘要 |
PROBLEM TO BE SOLVED: To smoothly, and almost with hardly resistance, insert a released heat retention structure (released heat cushioning structure) that maintains a circuit unit in a pressure cabinet, and further with which to press against the pressure cabinet, so as to improve the terminal conductivity. SOLUTION: In the manufacturing method of a submarine repeating equipment, wherein an insulation-covered circuit unit 1 is housed inside a cylindrical formed pressure cabinet 2 and the circuit unit 1 is retained in the pressure cabinet 2, by way of a released heat retaining structure 3 provided in the clearance formed between the pressure cabinet 2 and the circuit unit 1, pipes 3a that have diameter smaller than the dimensions of the clearance formed between the pressure cabinet 2 and the circuit unit 1 are inserted into the clearance, after which the inserted tubes 3a are given pressing from their transverse direction to made it deform, so as to be press-enlarged in the radial direction of the clearance, thus forming the released heat retention structure 3.
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