JPH0485247U

JPH0485247U -

Info

Publication number: JPH0485247U
Application number: JP12839090U
Authority: JP
Priority date: 1990-11-30
Filing date: 1990-11-30
Publication date: 1992-07-24

Description

[Brief explanation of drawings]

第１図および第２図は本考案の実施例を示し、
第１図は本実施例による燃焼圧センサの縦断面図
、第２図は第１図中の矢示−方向断面図、第
３図および第４図は先行技術を示し、第３図はエ
ンジン本体の要部を示す縦断面図、第４図は先行
技術による燃焼圧センサの縦断面図である。１３……ケーシング本体、１４……ダイヤフラ
ム、１８……圧電体、３１……受圧ロツド、３２
……位置決め用突起。 1 and 2 show an embodiment of the present invention,
FIG. 1 is a longitudinal sectional view of the combustion pressure sensor according to this embodiment, FIG. 2 is a sectional view in the direction of the arrow in FIG. 1, FIGS. 3 and 4 show the prior art, and FIG. FIG. 4 is a longitudinal sectional view showing the main parts of the main body, and FIG. 4 is a longitudinal sectional view of a combustion pressure sensor according to the prior art. 13...Casing body, 14...Diaphragm, 18...Piezoelectric body, 31...Pressure receiving rod, 32
...Protrusion for positioning.

Claims

[Scope of utility model registration request]

a casing body; a diaphragm provided at one end of the casing body and displaced in response to pressure acting on the one end of the casing body from the outside; , a pressure receiving rod that is displaced in the axial direction in accordance with the displacement of the diaphragm; and a pressure receiving rod provided on the proximal end side of the pressure receiving rod, the displacement of the diaphragm being transmitted via the pressure receiving rod as a voltage signal corresponding to the pressure. 1. A pressure sensor comprising a piezoelectric material that outputs an output, characterized in that a plurality of positioning protrusions projecting radially outward are provided on the outer peripheral side of the pressure receiving rod.