JPS5962571U

JPS5962571U - Ultrasonic object detection device

Info

Publication number: JPS5962571U
Application number: JP15858082U
Authority: JP
Inventors: 健一郎新美; 森田　喜久蔵
Original assignee: 株式会社日立ホームテック
Priority date: 1982-10-20
Filing date: 1982-10-20
Publication date: 1984-04-24

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 drawings]

第１図は従来の超音波物体検出装置と検知物体の断面上
面図、第２図は同超音波物体検出装置の指向性を示すグ
ラフ、第３図は本考案の一実施例を示す超音波物体検出
装置と検知物体の断面上面図、第４図は同超音波物体検
出装置の指向性を示すグラフである。２・・・・・・検知部表面、３・・・・・・検知物体、
４・・・・・・超　　　−音波緩衝帯、５・・・・・・
超音波発信素子、８・・・・・・超音波受信素子、１２
・・・・・・放射指向中心軸、１３・・・・・・受波指
向中心軸、θ・・・・・・開角度。Fig. 1 is a cross-sectional top view of a conventional ultrasonic object detection device and a detected object, Fig. 2 is a graph showing the directivity of the ultrasonic object detection device, and Fig. 3 is an ultrasonic wave showing an embodiment of the present invention. FIG. 4, which is a cross-sectional top view of the object detection device and the detected object, is a graph showing the directivity of the ultrasonic object detection device. 2... Sensing part surface, 3... Sensing object,
4... Ultrasonic buffer zone, 5...
Ultrasonic transmitting element, 8... Ultrasonic receiving element, 12
...Radiation directivity center axis, 13...Reception directivity center axis, θ...Opening angle.

Claims

[Scope of utility model registration request]

A pair of ultrasonic transmitting elements and an ultrasonic receiving element directed towards the sensing object are provided inside the detecting unit case, and an ultrasonic emitting unit and an ultrasonic receiving unit are provided on the detecting unit surface of the detecting unit case in correspondence with the elements. In this ultrasonic object detection device, there is an ultrasonic buffer zone 4 formed in a triangular ridge shape on the detection part surface 2, and an ultrasonic transmitting element 5 and an ultrasonic receiving element 8 located on both sides of this ultrasonic buffer zone 4. , an ultrasonic object detection device characterized in that an opening angle θ is provided such that the receiving direction center axis 12, 13 relatively expands toward the detection object 3.