JPS63199043U

JPS63199043U -

Info

Publication number: JPS63199043U
Application number: JP8965987U
Authority: JP
Priority date: 1987-06-12
Filing date: 1987-06-12
Publication date: 1988-12-21

Description

[Brief explanation of the drawing]

第１図及び第２図は本考案の第１実施例を示し
、第１図は内部構造を示す断面図、第２図は機械
変位量に対する電気的変位量を示すグラフ図、第
３図及び第４図は第２実施例を示し、第３図は内
部構造を示す断面図、第４図は機械変位量に対す
る電気的変位量を示すグラフ、第５図及び第６図
は第３実施例を示し、第５図は内部構造を示す断
面図、第６図は機械変位量に対する電気的変位量
を示すグラフ図、第７図及び第８図は第４実施例
を示し、第７図は内部構造を示す断面図、第８図
は機械変位量に対する電気的変位量を示すグラフ
図、第９図ないし第１１図は従来の液圧センサを
示し、第９図は全体の断面図、第１０図はブロツ
ク図、第１１図は回路図である。１……本体、４……受圧ロツド、５……スプリ
ング、６……移動量検出手段、２１……抵抗体、
２２……導体、３１……遮光板、３２……スリツ
ト、３３……フオトインタラプタ、５１……磁石
、５２……コイル、５３……リードスイツチ。 1 and 2 show a first embodiment of the present invention, FIG. 1 is a sectional view showing the internal structure, FIG. 2 is a graph showing the amount of electrical displacement with respect to the amount of mechanical displacement, and FIGS. Fig. 4 shows the second embodiment, Fig. 3 is a sectional view showing the internal structure, Fig. 4 is a graph showing the amount of electrical displacement with respect to the amount of mechanical displacement, and Figs. 5 and 6 show the third embodiment. , FIG. 5 is a sectional view showing the internal structure, FIG. 6 is a graph showing the amount of electrical displacement with respect to the amount of mechanical displacement, FIGS. 7 and 8 show the fourth embodiment, and FIG. 8 is a sectional view showing the internal structure, FIG. 8 is a graph showing the amount of electrical displacement with respect to the amount of mechanical displacement, FIGS. 9 to 11 show conventional hydraulic pressure sensors, FIG. 9 is a sectional view of the whole, FIG. 10 is a block diagram, and FIG. 11 is a circuit diagram. DESCRIPTION OF SYMBOLS 1...Main body, 4...Pressure receiving rod, 5...Spring, 6...Movement amount detection means, 21...Resistor,
22... Conductor, 31... Light shielding plate, 32... Slit, 33... Photo interrupter, 51... Magnet, 52... Coil, 53... Reed switch.

Claims

[Claims for Utility Model Registration] (1) A pressure receiving rod 4 that slides in response to the hydraulic pressure to be measured is slidably provided in the main body 1, and the pressure receiving rod 4 is moved in a direction resisting the hydraulic pressure with a spring 5. A pressure receiving rod 4 which is energized and further slides according to the hydraulic pressure.
A hydraulic pressure sensor characterized by being provided with movement amount detection means 6 for detecting the movement amount of the hydraulic pressure sensor. (2) Practical use characterized in that the movement amount detection means 6 includes a resistor 21 provided on the pressure receiving rod 4 and a conductor 22 provided on the main body 1 side and in sliding contact with the resistor 21. A hydraulic pressure sensor according to claim 1 of the patent registration claim. (3) The movement amount detecting means 6 includes a light shielding plate 31 provided on the pressure receiving rod 4 and having a large number of slits 32 in the direction of movement of the pressure receiving rod 4, and a light shielding plate 31 provided on the main body 1 side. The hydraulic pressure sensor according to claim 1, which is a registered utility model, characterized in that the sensor comprises a photo interrupter 33 disposed at a position. (4) The movement amount detecting means 6 is comprised of a magnet 51 provided on the pressure receiving rod 4 and a coil 52 provided on the main body 1 side and disposed at a position surrounding the magnet 51. A hydraulic pressure sensor according to claim 1 of the utility model registration claim. (5) The movement amount detection means 6 is composed of a magnet 51 provided on the pressure receiving rod 4 and a reed switch 53 provided on the main body 1 side and disposed close to the magnet 51. A hydraulic pressure sensor according to claim 1 of the utility model registration claim.