JPS58154429U

JPS58154429U - object detection device

Info

Publication number: JPS58154429U
Application number: JP4997882U
Authority: JP
Inventors: 孝志和田
Original assignee: ティーディーケイ株式会社
Priority date: 1982-04-08
Filing date: 1982-04-08
Publication date: 1983-10-15

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図は従来の物体検知装置を示すものであって圧電振
動子及び支持筒部分の断面図、第２図は本出願人が先に
提案した物体検知装置の一例の断面図、第３図は本出願
人が先に提案した物体検知装置の他の例の断面図、第４
図は本考案に係る物体検知装置の実施例を示す正断面図
、第５図は同平面図、第６図Ａは圧電振動子の正面図、
第６図Ｂは同底面図である。１、ＩＡ、ＩＢ・・・ケース、２．　２Ａ、　　２Ｂ・
・・支持筒、３・・・圧電振動子、４・・・弾性接着剤
、２０・・・プリント基板、２３・・・発振回路。FIG. 1 shows a conventional object detection device, and is a sectional view of a piezoelectric vibrator and a support cylinder portion, FIG. 2 is a sectional view of an example of an object detection device previously proposed by the applicant, and FIG. 3 is a cross-sectional view of another example of the object detection device previously proposed by the applicant;
The figure is a front sectional view showing an embodiment of the object detection device according to the present invention, FIG. 5 is a plan view thereof, and FIG. 6A is a front view of a piezoelectric vibrator.
FIG. 6B is a bottom view of the same. 1. IA, IB...case, 2. 2A, 2B・
... Support tube, 3... Piezoelectric vibrator, 4... Elastic adhesive, 20... Printed circuit board, 23... Oscillation circuit.

Claims

[Scope of utility model registration request]

In an object detection device that supports a piezoelectric vibrator with a support tube protruding from a case, and utilizes the fact that the resonance state of the piezoelectric vibrator changes depending on whether or not an object to be detected contacts the piezoelectric vibrator, An object detection device characterized in that the support tube and at least a portion of the case are integrally formed of metal.