Loudspeaker suitable for high-temperature use having a non-adhes

Details Loudspeaker suitable for high-temperature use having a non-adhes Loudspeaker suitable for high-temperature use having a non-adhes

1995-05-23

1996-12-03

Tran, Sinh

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

381202, H04R 2500

Patent

active

055816240

ABSTRACT:
In the state of the art, most loudspeaker diaphragms 10 and the voice coil supports 11 are joined by adhesives. However, even high-grade adhesives fail if such loudspeakers are subjected to continuous operating temperatures much above 120 degrees Celsius. The one-piece construction of loudspeaker diaphragm 10 and voice coil support 11 is also limited. It is particularly difficult to produce one-piece metal constructions by means of the deep-draw process. It is therefore the task of the invention to present a joint of loudspeaker diaphragm 10 and voice coil support 11, which is simple to produce, can be subjected to high temperatures and is free of adhesives. This task is fulfilled in that the upper rim 19 of the voice coil support 11 is flared together with the upper rim 16 of a neck 12 formed on the diaphragm 10. In addition the invention proposes to join the neck 12 of loudspeaker diaphragm 10 to the voice coil support 11 through the effect of a ring-shaped part 23. If the neck 12 of diaphragm 10 is located between the ring-shaped part 23 and the voice coil support 11, the latter has the function of opposing the pressure (force) exerted by the ring-shaped part 23 on the outside jacket of the neck 12.

REFERENCES:
patent: 2234833 (1941-03-01), Preston
patent: 4577069 (1986-03-01), Keezer
patent: 5340167 (1994-08-01), Morse

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