Bourdon's tube null for manometer

摘要

PROBLEM TO BE SOLVED: To provide a Bourdon tube which enables easy fitting of a pressure indicating point, without having effect on pressure sealed in the Bourdon tube, and is producible at a lower cost and having a higher productivity as well. ;SOLUTION: A Bourdon tube 7 for a pressure gauge is made by forming a sealing part A for pressure leakage prevention at a position nearer a little bit to a winding center side than the tip part 20 of the Bourdon tube 7, and sticking a pressure indicating pointer 18 to a position being more on the tip 20 side than this sealing part A. Consequently, pressure inside the Bourdon tube 7 is not affected, since the sealing part A is provided at a position being more on the winding center side than the pressure pointer 18, even if a hole is formed in the sticking part of the pressure pointer 18. Accordingly, fitting of the pressure pointer 18 becomes easy, since it is all right if the pressure pointer 18 is fitted being separated from the sealing part A.;COPYRIGHT: (C)2000,JPO