JPS5676700A - Diaphragm plate for small-sized sound production body - Google Patents

Diaphragm plate for small-sized sound production body

Info

Publication number
JPS5676700A
JPS5676700A JP15375379A JP15375379A JPS5676700A JP S5676700 A JPS5676700 A JP S5676700A JP 15375379 A JP15375379 A JP 15375379A JP 15375379 A JP15375379 A JP 15375379A JP S5676700 A JPS5676700 A JP S5676700A
Authority
JP
Japan
Prior art keywords
diaphragm plate
folds
small
sound production
production body
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.)
Pending
Application number
JP15375379A
Other languages
Japanese (ja)
Inventor
Toyoji Asahina
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP15375379A priority Critical patent/JPS5676700A/en
Publication of JPS5676700A publication Critical patent/JPS5676700A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

PURPOSE:To improve the response at low frequencies, by forming folds at a part of diaphragm plate of a small-sized sound production body through an etching processing. CONSTITUTION:A photoresist 2 is coated on upper and lower surfaces of a diaphragm plate 1 to form the pattern 2b with folds. Next, grooves 4 for folds are formed with etching, the photoresist is removed and the diaphragm plate 5 having the grooves 4 with folds is formed. Thus, by forming folds at the outer circumference of the diaphragm plate, since the thickness of grooves with folds can extremely be made thin in comparison with the thickness of the diaphragm plate, the frequency characteristics of the sound body is extended to low band.
JP15375379A 1979-11-28 1979-11-28 Diaphragm plate for small-sized sound production body Pending JPS5676700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15375379A JPS5676700A (en) 1979-11-28 1979-11-28 Diaphragm plate for small-sized sound production body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15375379A JPS5676700A (en) 1979-11-28 1979-11-28 Diaphragm plate for small-sized sound production body

Publications (1)

Publication Number Publication Date
JPS5676700A true JPS5676700A (en) 1981-06-24

Family

ID=15569360

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15375379A Pending JPS5676700A (en) 1979-11-28 1979-11-28 Diaphragm plate for small-sized sound production body

Country Status (1)

Country Link
JP (1) JPS5676700A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6240898A (en) * 1985-08-19 1987-02-21 Audio Technica Corp acoustic transducer diaphragm
WO2012035106A1 (en) * 2010-09-15 2012-03-22 Trw Automotive Electronics & Components Gmbh Electrodynamic actuator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6240898A (en) * 1985-08-19 1987-02-21 Audio Technica Corp acoustic transducer diaphragm
WO2012035106A1 (en) * 2010-09-15 2012-03-22 Trw Automotive Electronics & Components Gmbh Electrodynamic actuator
CN103109546A (en) * 2010-09-15 2013-05-15 Trw车辆电气与零件有限公司 Electrodynamic actuator
JP2013541282A (en) * 2010-09-15 2013-11-07 ティーアールダブリュー・オートモーティブ・エレクトロニクス・アンド・コンポーネンツ・ゲーエムベーハー Electrodynamic actuator
US9692285B2 (en) 2010-09-15 2017-06-27 Trw Automotive Electronics & Components Gmbh Electrodynamic actuator

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