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DE3775563D1 - MEMBRANE SYSTEM WITH ROTATIONALLY SYMMETRIC REINFORCING PLATE AS A SOUND-RADIATING OR RECORDING ELEMENT. - Google Patents

MEMBRANE SYSTEM WITH ROTATIONALLY SYMMETRIC REINFORCING PLATE AS A SOUND-RADIATING OR RECORDING ELEMENT.

Info

Publication number
DE3775563D1
DE3775563D1 DE8787903856T DE3775563T DE3775563D1 DE 3775563 D1 DE3775563 D1 DE 3775563D1 DE 8787903856 T DE8787903856 T DE 8787903856T DE 3775563 T DE3775563 T DE 3775563T DE 3775563 D1 DE3775563 D1 DE 3775563D1
Authority
DE
Germany
Prior art keywords
radius
radiating
sound
reinforcing plate
diaphragm
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.)
Expired - Fee Related
Application number
DE8787903856T
Other languages
German (de)
Inventor
Helmut Krueger
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.)
Bosch Telecom GmbH
Original Assignee
ANT Nachrichtentechnik GmbH
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
Priority claimed from DE19863622526 external-priority patent/DE3622526A1/en
Priority claimed from DE19868617965 external-priority patent/DE8617965U1/en
Application filed by ANT Nachrichtentechnik GmbH filed Critical ANT Nachrichtentechnik GmbH
Priority to DE8787903856T priority Critical patent/DE3775563D1/en
Application granted granted Critical
Publication of DE3775563D1 publication Critical patent/DE3775563D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04R7/122—Non-planar diaphragms or cones 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)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

The annular conical diaphragm (M) is driven in the axial direction (1) by an electromagnetic drive (E) at the radius (Ro) where the flexure-resistant piston vibrator plate (P) is bonded to it. The axial thickness (K) of the plate (P) increases continuously from its centre half-way to that radius (Ro) and then decreases, with a rate of change (dK/dr) which is either constant or piecewise-constant in progression. The diaphragm (M) extends from that radius (Ro) outwards to a peripheral ring (Rr) whose axial thickness (S) also decreases towards the rim, whence a projection (F) continues at right angles to the axis (1) as a fixture for the ring (Rr), and also indirectly for the diaphragm (M) itself.
DE8787903856T 1986-07-04 1987-06-19 MEMBRANE SYSTEM WITH ROTATIONALLY SYMMETRIC REINFORCING PLATE AS A SOUND-RADIATING OR RECORDING ELEMENT. Expired - Fee Related DE3775563D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8787903856T DE3775563D1 (en) 1986-07-04 1987-06-19 MEMBRANE SYSTEM WITH ROTATIONALLY SYMMETRIC REINFORCING PLATE AS A SOUND-RADIATING OR RECORDING ELEMENT.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE19863622526 DE3622526A1 (en) 1986-07-04 1986-07-04 Flexurally rigid plate, particularly calotte for a sound transducer
DE8617947 1986-07-04
DE19868617965 DE8617965U1 (en) 1986-07-04 1986-07-04 Part of a sound transducer
DE3718824 1987-06-05
DE8787903856T DE3775563D1 (en) 1986-07-04 1987-06-19 MEMBRANE SYSTEM WITH ROTATIONALLY SYMMETRIC REINFORCING PLATE AS A SOUND-RADIATING OR RECORDING ELEMENT.
PCT/DE1987/000275 WO1988000423A1 (en) 1986-07-04 1987-06-19 Membrane system with flexion-resistant rotationally symmetric plate for use as a sound reflecting or receiving element

Publications (1)

Publication Number Publication Date
DE3775563D1 true DE3775563D1 (en) 1992-02-06

Family

ID=27433633

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787903856T Expired - Fee Related DE3775563D1 (en) 1986-07-04 1987-06-19 MEMBRANE SYSTEM WITH ROTATIONALLY SYMMETRIC REINFORCING PLATE AS A SOUND-RADIATING OR RECORDING ELEMENT.

Country Status (5)

Country Link
EP (1) EP0313560B1 (en)
JP (1) JPH01503189A (en)
DE (1) DE3775563D1 (en)
DK (1) DK113988A (en)
WO (1) WO1988000423A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838853C1 (en) * 1988-09-30 1989-11-30 Ant Nachrichtentechnik Gmbh, 7150 Backnang, De
JP4749402B2 (en) * 2007-09-28 2011-08-17 フォスター電機株式会社 Diaphragm for electroacoustic transducer
GB2534859B (en) * 2015-01-30 2020-06-10 B&W Group Ltd Diaphragm for a loudspeaker drive unit or a microphone

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125647A (en) * 1964-03-17 Frequency-o cycles sec
US1872081A (en) * 1927-11-07 1932-08-16 Jesse B Hawley Sound radiator
AT274080B (en) * 1967-07-05 1969-09-10 Philips Nv Sound transducer with a foam membrane
US3586121A (en) * 1969-03-03 1971-06-22 Nippon Musical Instruments Mfg Diaphragm for loudspeakers
DE2651026A1 (en) * 1976-11-09 1978-05-18 Helmut Dipl Ing Krueger Determn. of radial thickness variation of loudspeaker diaphragm - uses equation based on specified external measurements of cone
JPS53119023A (en) * 1977-03-26 1978-10-18 Kenzou Inoue Moving coil type sound converting vibration plate
DE3123098C2 (en) * 1981-06-11 1983-06-01 Martin 4600 Dortmund Stute Membrane for electroacoustic transducer systems

Also Published As

Publication number Publication date
EP0313560B1 (en) 1991-12-27
DK113988D0 (en) 1988-03-03
DK113988A (en) 1988-03-03
WO1988000423A1 (en) 1988-01-14
JPH01503189A (en) 1989-10-26
EP0313560A1 (en) 1989-05-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee