JPS6072532U

JPS6072532U - Knock sensor

Info

Publication number: JPS6072532U
Application number: JP16564283U
Authority: JP
Inventors: 浅野　勝吾; 寿平高橋
Original assignee: 松下電器産業株式会社
Priority date: 1983-10-26
Filing date: 1983-10-26
Publication date: 1985-05-22

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図は従来の７ツクセンサの断面図、第２図は同ノン
クセンサの周波数特性図、第３図は本考案の一実施例に
おけるノックセンサの断面図、第４図はノックセンサの
要部拡大断面図である。１・・・筐体、２・・・ネジ部、３・・・基板、４・・
・凸部、５・・・突起、６・・・孔、７・・・振動板、
８・・・圧電セラミック、９・・・コネクタユニット１
，１０・・・円筒部、１１・・・基板部、１２・・・凹
部、１３・・・ターミナル、１４・・・リード部、１５
・・・絶縁材、１６・・・金属箔、１７・・・ＯＩＪン
グ、１８・・・規制板、１９・・・固定部材、２０・・
・径小部、２１・・・径大部。Figure 1 is a cross-sectional view of a conventional knock sensor, Figure 2 is a frequency characteristic diagram of the knock sensor, Figure 3 is a cross-sectional view of a knock sensor according to an embodiment of the present invention, and Figure 4 is an enlarged view of the main parts of the knock sensor. FIG. 1... Housing, 2... Screw part, 3... Board, 4...
・Protrusion, 5... protrusion, 6... hole, 7... diaphragm,
8... Piezoelectric ceramic, 9... Connector unit 1
, 10... Cylindrical part, 11... Board part, 12... Recessed part, 13... Terminal, 14... Lead part, 15
...Insulating material, 16...Metal foil, 17...OIJ ring, 18...Regulation plate, 19...Fixing member, 20...
・Small diameter part, 21...Large diameter part.

Claims

[Scope of utility model registration request]

A substrate integrally formed with a protrusion, a diaphragm with a hole formed in the center, a piezoelectric ceramic with a hole formed in the center and bonded to the diaphragm, and a hole in the diaphragm or a hole in the diaphragm. a cylindrical fixing member having a small diameter portion that can be inserted into the hole of the piezoelectric ceramic; , the end of the small-diameter side of the fixing member is welded to the protrusion, and the diaphragm or the diaphragm and the piezoelectric ceramic are held between the large-diameter part of the fixing member and the protrusion. knock sensor.