JPH0421936U

JPH0421936U -

Info

Publication number: JPH0421936U
Application number: JP6386290U
Authority: JP
Priority date: 1990-06-16
Filing date: 1990-06-16
Publication date: 1992-02-24

Description

[Brief explanation of the drawing]

第１図および第２図は本考案の一実施例にかか
る圧力検出装置を示しており、第１図は作動前の
状態の縦断面図、第２図は低圧作動状態の縦断面
図、第３図は従来の圧力検出装置の縦断面図であ
る。符号の説明、１……圧力検出装置、２……ケー
ス、２１……ロアケース、２１ａ……底壁部、２
１ｂ……受圧孔、２１ｃ……段凹部、２２……ア
ツパケース、２２ａ……案内孔、３……検出軸、
４……第１ボデイ、４１……大径部、４２……小
径部、５……第２ボデイ、５１ａ……孔、６……
低圧用スプリング、７……高圧用スプリング、８
……管路、９……開口部、１０……受圧部。 1 and 2 show a pressure detection device according to an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view in a state before operation, FIG. 2 is a longitudinal sectional view in a low-pressure operating state, and FIG. FIG. 3 is a longitudinal sectional view of a conventional pressure detection device. Explanation of symbols, 1...Pressure detection device, 2...Case, 21...Lower case, 21a...Bottom wall portion, 2
1b...Pressure receiving hole, 21c...Step recess, 22...Atsupa case, 22a...Guide hole, 3...Detection shaft,
4...first body, 41...large diameter part, 42...small diameter part, 5...second body, 51a...hole, 6...
Low pressure spring, 7...High pressure spring, 8
... Pipe line, 9 ... Opening, 10 ... Pressure receiving part.

Claims

[Claims for Utility Model Registration] An internally hollow case, a detection shaft whose one end is inserted into the case so as to be freely protrusive and retractable, and a movable body which is housed in the case and to which one end of the detection shaft is connected;
A pressure detection device comprising a spring that biases the body in a direction in which the detection shaft is retracted with a predetermined load, and receives fluid pressure to be detected at an end of the body opposite to the detection shaft. A plurality of stages are arranged in series in the direction of movement of the detection axis, spaced apart from each other by a predetermined interval, and
The detection shaft is connected to the first stage body on the pressure receiving side, and the latter body is provided with a shaft hole through which the detection shaft is movably passed, and a plurality of springs are provided corresponding to the plurality of stages of bodies, A pressure detection device characterized in that the set load of each spring is gradually increased from the pressure receiving side.