EP0185833A1 - Membrane en matériaux plastiques pour haut-parleurs - Google Patents
Membrane en matériaux plastiques pour haut-parleurs Download PDFInfo
- Publication number
- EP0185833A1 EP0185833A1 EP84830355A EP84830355A EP0185833A1 EP 0185833 A1 EP0185833 A1 EP 0185833A1 EP 84830355 A EP84830355 A EP 84830355A EP 84830355 A EP84830355 A EP 84830355A EP 0185833 A1 EP0185833 A1 EP 0185833A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- loudspeakers
- plastic materials
- mould
- fact
- 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.)
- Withdrawn
Links
Images
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
Definitions
- the invention refers to a new conception proceedure for obtaining membra nes in plastic materials for the acoustic components of loudspeakers which substantially, in the moulding phase, determines the structural mo dification of the initial homogenous material of the plate while increas ing its elasticity and resistance.
- the loudspeaker is a sound diffusing device with power and frequency high er than the normal ones, to be used for manifold employs. It essentially consists of a magnetic circuit, of a basket and of an acoustic component properly assembled. Underlaid to tension differences, the device generates magnetic fields which determine the motion of the mobile coil. As this one is fastened to the acoustic component, it strikes the air and originates the sound. For the best condition of employ, the acoustic diffuser must be in the position of strike the air theoretically in an infinite range of vibrations. This acoustic component, which is a deter minating part in the acoustic yield of the loudspeaker, at present is manufactured in a version with cellulous material.
- This type of membrane has a modest elasticity and resistance since the cellulous material limitates the range and the power of these vibrations and with the time it causes the deterioration of the component particularly because of the condensate humidity and/or the light radiations.
- at present and acoustic component is used which employs a membrane in plastic materials. This realization, in comparison with the previous ones, increases the membrane resistance to atmosphere agents, but it leaves the acoustic yield nearly unchanged.
- the invention object performs an additional increase of resistance and a substantial improvement of the acoustic yield and power maintenance. This is possible because, in the membrane forming, the plastic material is properly operated by means of a structural transformation which enable an improvement of the above mentioned features.
- the membrane thus carried out turns out to be more resistant and elastic with consequent increase of the answers in frequency. Accordingly a wider range of possibilities is allowed in the air striking and, therefore, a better total acoustic yield.
- the conventional mould can be previously prepared for the membrane forming by fitting, on the walls of its active part, a support in relief screening leaf be means of sticking or otherwise.
- the forming phase is foreseen with heat delivery through preheating of the mould performed by a resistance assembly inserted into it.
- FIG. 1 is the perspective view of the loudspeaker.
- Fig. 2 is its side view and fig. 3 its front one.
- a magneti group 1 is used on which a basket 2 has been fixed by nails and mobile coil 3 mounted, and then a membrane 4 made according to the invention by means of sticking with centre square 5 and nucleus cover 6 fitted by sticking in a similar way. The whole is blocked by means of an annular gasket 7 which is sticked too in similar way.
- the two polarities 8 and 9 of the mobile coil 3 are connected by tinning to the terminal board 10.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP84830355A EP0185833A1 (fr) | 1984-12-27 | 1984-12-27 | Membrane en matériaux plastiques pour haut-parleurs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP84830355A EP0185833A1 (fr) | 1984-12-27 | 1984-12-27 | Membrane en matériaux plastiques pour haut-parleurs |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0185833A1 true EP0185833A1 (fr) | 1986-07-02 |
Family
ID=8193113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84830355A Withdrawn EP0185833A1 (fr) | 1984-12-27 | 1984-12-27 | Membrane en matériaux plastiques pour haut-parleurs |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0185833A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022175306A1 (fr) | 2021-02-16 | 2022-08-25 | Société des Produits Nestlé S.A. | Composition et kit pour soulager les symptômes d'une allergie respiratoire |
WO2022179905A1 (fr) | 2021-02-23 | 2022-09-01 | Société des Produits Nestlé S.A. | Composition et kit pour soulager les symptômes de l'allergie respiratoire chez les jeunes enfants |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB640367A (en) * | 1947-05-28 | 1950-07-19 | Acoustic Products Ltd | Improvements relating to diaphragms for loudspeakers |
DE976940C (de) * | 1954-06-26 | 1964-08-20 | Kurt Mueller K G Dr | Verfahren zur Herstellung einer Konusmembran fuer Lautsprecher |
US3768590A (en) * | 1971-09-23 | 1973-10-30 | F Yocum | Molded loudspeaker diaphragm |
US3835265A (en) * | 1971-11-08 | 1974-09-10 | Pioneer Electronic Corp | Vibrating member for acoustic transducer |
US3862376A (en) * | 1973-01-19 | 1975-01-21 | Stanley F White | Cone construction for loudspeaker |
-
1984
- 1984-12-27 EP EP84830355A patent/EP0185833A1/fr not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB640367A (en) * | 1947-05-28 | 1950-07-19 | Acoustic Products Ltd | Improvements relating to diaphragms for loudspeakers |
DE976940C (de) * | 1954-06-26 | 1964-08-20 | Kurt Mueller K G Dr | Verfahren zur Herstellung einer Konusmembran fuer Lautsprecher |
US3768590A (en) * | 1971-09-23 | 1973-10-30 | F Yocum | Molded loudspeaker diaphragm |
US3835265A (en) * | 1971-11-08 | 1974-09-10 | Pioneer Electronic Corp | Vibrating member for acoustic transducer |
US3862376A (en) * | 1973-01-19 | 1975-01-21 | Stanley F White | Cone construction for loudspeaker |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022175306A1 (fr) | 2021-02-16 | 2022-08-25 | Société des Produits Nestlé S.A. | Composition et kit pour soulager les symptômes d'une allergie respiratoire |
WO2022179905A1 (fr) | 2021-02-23 | 2022-09-01 | Société des Produits Nestlé S.A. | Composition et kit pour soulager les symptômes de l'allergie respiratoire chez les jeunes enfants |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3931867A (en) | Wide range speaker system | |
US6917270B1 (en) | Electromagnetic actuator and structure for mounting the same | |
US6101262A (en) | Flush-mount pivoting speaker | |
CN1089970C (zh) | 绷紧电枢共振脉冲转换器 | |
JPH0738754B2 (ja) | 広拡散バッフルを有するラウドスピーカシステム | |
EP0493450A4 (en) | Planar speakers | |
EP0836362A3 (fr) | Haut-parleur | |
US20110135111A1 (en) | Speaker device and automobile | |
AU661372B2 (en) | A tilt adjuster for a speaker support frame | |
US20070060207A1 (en) | Multifunctional actuator and mobile terminal | |
US4991688A (en) | Audio speaker system | |
EP0185833A1 (fr) | Membrane en matériaux plastiques pour haut-parleurs | |
WO2001047321A3 (fr) | Suspension a articulations regressives | |
US8699729B2 (en) | Audio speaker assembly | |
US4790020A (en) | Horn type loudspeakers | |
US20050105745A1 (en) | Dual-element speaker device | |
US5822444A (en) | Loudspeaker | |
WO2005081580A1 (fr) | Systeme de haut-parleur a plaques multidirectionnelles | |
GB2144600A (en) | Electro-acoustic transducer | |
GB2114855A (en) | Moving coil transducer | |
EP0074818B1 (fr) | Transducteurs téléphoniques | |
US20030063757A1 (en) | Acoustical speaker apparatus | |
US20170303047A1 (en) | Unidirectional dynamic microphone unit | |
CN211019068U (zh) | 一种投影装置 | |
JPH052199U (ja) | 電磁型電気音響器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19861217 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19870104 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: NEROZZI, ALBERTO |