JPS58123699U - Electrostatic vibrator - Google Patents

Electrostatic vibrator

Info

Publication number
JPS58123699U
JPS58123699U JP2021882U JP2021882U JPS58123699U JP S58123699 U JPS58123699 U JP S58123699U JP 2021882 U JP2021882 U JP 2021882U JP 2021882 U JP2021882 U JP 2021882U JP S58123699 U JPS58123699 U JP S58123699U
Authority
JP
Japan
Prior art keywords
sound wave
vibrating membrane
electrostatic vibrator
fixed electrode
wave radiation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2021882U
Other languages
Japanese (ja)
Other versions
JPH0212800Y2 (en
Inventor
進 片山
Original Assignee
松下電工株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 松下電工株式会社 filed Critical 松下電工株式会社
Priority to JP2021882U priority Critical patent/JPS58123699U/en
Publication of JPS58123699U publication Critical patent/JPS58123699U/en
Application granted granted Critical
Publication of JPH0212800Y2 publication Critical patent/JPH0212800Y2/ja
Granted legal-status Critical Current

Links

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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来例の断面図、第２図は本考案の実施例の断
面図、第３図は同上の原理説明図であり、１は振動膜、
２は孔、４は固定電極、１０は背板、１は背室寸法であ
る。Fig. 1 is a cross-sectional view of a conventional example, Fig. 2 is a cross-sectional view of an embodiment of the present invention, and Fig. 3 is a diagram explaining the principle of the same.
2 is a hole, 4 is a fixed electrode, 10 is a back plate, and 1 is a back chamber dimension.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 音波を通過するために多数の孔を開けた固定電極上に振
動膜を取付けると共に音波放射面である振動膜を音波放
射方向に凹面とし、固定電極とは反対側に設けた音波遮
蔽用の背板と振動膜との距離を使用周波数における音波
波長の１７２以下として成ることを特長とする静電型振
動子。A vibrating membrane is attached to a fixed electrode with many holes for the passage of sound waves, and the vibrating membrane, which is a sound wave radiation surface, is made concave in the sound wave radiation direction, and a backing for sound wave shielding is provided on the opposite side of the fixed electrode. An electrostatic vibrator characterized in that the distance between the plate and the vibrating membrane is 172 or less of the wavelength of the sound wave at the operating frequency.
JP2021882U 1982-02-15 1982-02-15 Electrostatic vibrator Granted JPS58123699U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021882U JPS58123699U (en) 1982-02-15 1982-02-15 Electrostatic vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2021882U JPS58123699U (en) 1982-02-15 1982-02-15 Electrostatic vibrator

Publications (2)

Publication Number Publication Date
JPS58123699U true JPS58123699U (en) 1983-08-23
JPH0212800Y2 JPH0212800Y2 (en) 1990-04-10

Family

ID=30032392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021882U Granted JPS58123699U (en) 1982-02-15 1982-02-15 Electrostatic vibrator

Country Status (1)

Country Link
JP (1) JPS58123699U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8861312B2 (en) 2007-03-14 2014-10-14 Qualcomm Incorporated MEMS microphone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8861312B2 (en) 2007-03-14 2014-10-14 Qualcomm Incorporated MEMS microphone

Also Published As

Publication number Publication date
JPH0212800Y2 (en) 1990-04-10

Similar Documents

Publication Publication Date Title
JPS58123699U (en) Electrostatic vibrator
JPS6115900U (en) Ultrasonic transducer
JPS5942699U (en) piezoelectric earphones
JPS5946099U (en) alarm device
JPS6085493U (en) Ultrasonic transducer shield structure
JPS59166595U (en) Piezoelectric sound device
JPS5964567U (en) ultrasonic probe
JPS58106774U (en) object detection device
JPS59129298U (en) condenser microphone
JPS59101595U (en) Square flat speaker
JPS6032893U (en) Ultrasonic transducer array
JPS59177222U (en) ceramic resonator
JPS58103369U (en) ultrasonic probe
JPS592313U (en) ultrasonic probe
JPS6090999U (en) piezoelectric speaker
JPS5987665U (en) ultrasonic probe
JPS59127396U (en) electroacoustic transducer
JPS58148972U (en) Electronic equipment housing device
JPS5877921U (en) surface acoustic wave device
JPS59144991U (en) Diaphragm for speaker
JPS6072099U (en) Ultrasonic transducer using piezoelectric vibrator
JPS58191789U (en) Underwater ultrasonic transducer
JPS59193090U (en) Transducer/receiver
JPS5811316U (en) Slanted ceramic filter
JPS5969587U (en) Airborne ultrasonic transducer case