JPS59109959U

JPS59109959U - Piezoelectric acceleration pick-up

Info

Publication number: JPS59109959U
Application number: JP291883U
Authority: JP
Inventors: 足立　潮
Original assignee: 株式会社トライテック
Priority date: 1983-01-13
Filing date: 1983-01-13
Publication date: 1984-07-24

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図Ａ、　Ｂ図は一般的な圧電型加速度ピックアップ
の構造の二側を示す断面図、第２図は第１図Ａ図に示す
ピックアップに絶縁性取付部品を施した例を示す同ピッ
クアップ断面図、゛第３図は本　　　　−考案の実施例
を示す同ピックアップ断面図、第４図は同ねじを取外し
た状態の概略断面図、第５図は他例を示す同ピックアッ
プ概略断面図、第６図は他例を示す取付ねじ断面図であ
る。１・・・・・・セラミック、２・・・・・・重錘、３・
・・・・・振動検知子、４・・・・・・筐体、６・・・
・・・取付ねじ、９・・・・・・被測定物、１０・・・
・・・ねじ挿入筒、＄ａ、　９ｂ、　８ｃ。８Ｃ′、８０″・・・・・・絶縁性金属酸化物から成る
絶縁被覆層。（Ａ）　　　　−第１図ｐ第４図　　　　　−Figures 1A and 1B are cross-sectional views showing two sides of the structure of a general piezoelectric acceleration pickup, and Figure 2 is an example of the pickup shown in Figure 1A with insulating mounting parts. 3 is a sectional view of the same pickup showing an embodiment of the present invention, FIG. 4 is a schematic sectional view of the same pickup with the screw removed, and FIG. 5 is a schematic sectional view of the same pickup showing another example. FIG. 6 is a sectional view of a mounting screw showing another example. 1... Ceramic, 2... Weight, 3.
...Vibration detector, 4...Housing, 6...
...Mounting screw, 9...Object to be measured, 10...
...Screw insertion tube, $a, 9b, 8c. 8C', 80''...Insulating coating layer made of insulating metal oxide. (A) -Figure 1p Figure 4-

Claims

[Scope of utility model registration request]

(1) In a piezoelectric acceleration pickup in which a vibration detector consisting of a piezoelectric element and a weight is built into a metal casing, and one electrode of the piezoelectric element is electrically connected to the casing, electricity from the object to be measured is 1. A piezoelectric acceleration pickup characterized in that an insulating coating layer made of an insulating metal oxide is formed on the surface of the casing that comes into contact with an object to be measured in order to prevent i-conducting noise.

(2) In the invention described in paragraph 1, the insulating metal
A piezoelectric acceleration pickup characterized in that the oxide is aluminum oxide (alumina) or zirconium oxide (zirconia).

(3) The piezoelectric acceleration pickup according to item 1, wherein the insulating coating layer made of the insulating metal oxide is formed by thermal spraying.