JPS574693A - Truncated circular cone type metallic diaphragm - Google Patents

Truncated circular cone type metallic diaphragm

Info

Publication number
JPS574693A
JPS574693A JP7854580A JP7854580A JPS574693A JP S574693 A JPS574693 A JP S574693A JP 7854580 A JP7854580 A JP 7854580A JP 7854580 A JP7854580 A JP 7854580A JP S574693 A JPS574693 A JP S574693A
Authority
JP
Japan
Prior art keywords
array
crystals
circumference
diaphragm
circular cone
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
JP7854580A
Other languages
Japanese (ja)
Other versions
JPS6313593B2 (en
Inventor
Kikuo Tsurumoto
Fumio Hayakawa
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.)
Onkyo Corp
Original Assignee
Onkyo Corp
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 Onkyo Corp filed Critical Onkyo Corp
Priority to JP7854580A priority Critical patent/JPS574693A/en
Publication of JPS574693A publication Critical patent/JPS574693A/en
Publication of JPS6313593B2 publication Critical patent/JPS6313593B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones

Abstract

PURPOSE:To suppress the resonance and improve the frequency characteristics, by securing a coincidence between the array of metallic crystals and the circumference direction. CONSTITUTION:It is known that the Young's modulus in the array direction of crystals is larger than the Young's modulus in the direction orthogonal to the array direction of crystals. In this connection, the compliance in the direction of center axis of a diaphragm can be increased by securing a coincidence between the array of crystals and the circumference direction of a diaphragm. In other words, an almost fan-shaped metallic material is rolled toward the circumference by means of truncated circular cone type roller. In this case, the array of metallic coincides with the circumference direction of the material. As a result, such diaphragm has an extremely high rigidity in the circumference direction but has a low rigidity in the direction of center axis to obtain an appropriate compliance. Accordingly the interference is reduced for the energy of vibration to suppress a sharp peak dip.
JP7854580A 1980-06-10 1980-06-10 Truncated circular cone type metallic diaphragm Granted JPS574693A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7854580A JPS574693A (en) 1980-06-10 1980-06-10 Truncated circular cone type metallic diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7854580A JPS574693A (en) 1980-06-10 1980-06-10 Truncated circular cone type metallic diaphragm

Publications (2)

Publication Number Publication Date
JPS574693A true JPS574693A (en) 1982-01-11
JPS6313593B2 JPS6313593B2 (en) 1988-03-26

Family

ID=13664880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7854580A Granted JPS574693A (en) 1980-06-10 1980-06-10 Truncated circular cone type metallic diaphragm

Country Status (1)

Country Link
JP (1) JPS574693A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59129377A (en) * 1983-01-11 1984-07-25 イズミ工業株式会社 Melting holding furnace
JPS6050796U (en) * 1983-09-12 1985-04-10 イズミ工業株式会社 Melting and holding furnace
JPS61257436A (en) * 1985-05-10 1986-11-14 Topy Ind Ltd Method for removing contained impurity from aluminum metallic material
JPS61257435A (en) * 1985-05-10 1986-11-14 Topy Ind Ltd Method for removing contained impurity from aluminum metallic material
JPH034367U (en) * 1984-02-15 1991-01-17

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59129377A (en) * 1983-01-11 1984-07-25 イズミ工業株式会社 Melting holding furnace
JPS637318B2 (en) * 1983-01-11 1988-02-16 Izumi Automotive Ind
JPS6050796U (en) * 1983-09-12 1985-04-10 イズミ工業株式会社 Melting and holding furnace
JPH018946Y2 (en) * 1983-09-12 1989-03-10
JPH034367U (en) * 1984-02-15 1991-01-17
JPH0519176Y2 (en) * 1984-02-15 1993-05-20
JPS61257436A (en) * 1985-05-10 1986-11-14 Topy Ind Ltd Method for removing contained impurity from aluminum metallic material
JPS61257435A (en) * 1985-05-10 1986-11-14 Topy Ind Ltd Method for removing contained impurity from aluminum metallic material

Also Published As

Publication number Publication date
JPS6313593B2 (en) 1988-03-26

Similar Documents

Publication Publication Date Title
JPS5628600A (en) Piezo-electric speaker
JPS574693A (en) Truncated circular cone type metallic diaphragm
JPS5291669A (en) Piezoelectric vibrator
JPS5689200A (en) Receiver
JPS5657391A (en) Ultrasonic oscillator
JPS546523A (en) Diaphragm of speakers
JPS5366216A (en) Diaphragm for speaker
JPS52112305A (en) Electromagnetic pick-up
JPS56126397A (en) Speaker system
JPS5312294A (en) Supporting structure of piezoelectric vibrator
JPS5332691A (en) Long side piezoelectric vibrator
JPS5546652A (en) Plate speaker
JPS56125195A (en) Electroacoustic converter
JPS5552697A (en) Speaker
JPS51123627A (en) A speaker diaphram
JPS6440895A (en) Sound absorber
JPS5312305A (en) Vibrationproofing device for record players
JPS5592002A (en) Antenna unit
JPS5234762A (en) Process for fabrication of a device for transmitting and receiving super sonic waves
JPS53149781A (en) Piezo-electric vibrator
JPS5349426A (en) Speaker diaphragm
JPS52135715A (en) Speaker
JPS5294053A (en) Piezoelectric filter
JPS5345225A (en) Conical speaker
JPS57138298A (en) Diaphragm for speaker