EP 4075422 B1 20240717 - MICROMETRIC LOUDSPEAKER
Title (en)
MICROMETRIC LOUDSPEAKER
Title (de)
MIKROMETRISCHER LAUTSPRECHER
Title (fr)
HAUT-PARLEUR MICROMÉTRIQUE
Publication
Application
Priority
FR 2103908 A 20210415
Abstract (en)
[origin: US2022337954A1] A micrometric speaker includes a frame, an electromechanical transducer, and a mechanical-acoustic transducer comprising a rigid plate movably mounted in the frame. The electromechanical transducer comprises two piezoelectric actuators and two elastic strips. The frame comprises a central crossmember from which the two strips extend until engaging two lateral coupling edges of the mechanical-acoustic transducer, and the mechanical-acoustic transducer comprises two linearising springs each extending from one of the lateral edges to the rigid plate, to enable, during a deformation of the strips, a movement of the two lateral edges to the central crossmember and reduce the longitudinal constraints applied to the strips during their deformation due to their “recessed-guided” bending configuration.
IPC 8 full level
G10K 9/125 (2006.01); B06B 1/06 (2006.01); H04R 17/00 (2006.01)
CPC (source: EP US)
B06B 1/0629 (2013.01 - EP); G10K 9/125 (2013.01 - EP); H04R 1/288 (2013.01 - US); H04R 7/02 (2013.01 - US); H04R 7/24 (2013.01 - US); H04R 17/00 (2013.01 - EP US); B06B 2201/55 (2013.01 - EP); H04R 2201/003 (2013.01 - EP); H04R 2207/021 (2013.01 - US); H04R 2400/00 (2013.01 - EP); H04R 2400/11 (2013.01 - US); H04R 2499/11 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4075422 A1 20221019; EP 4075422 B1 20240717; FR 3122023 A1 20221021; FR 3122023 B1 20231229; US 11785391 B2 20231010; US 2022337954 A1 20221020
DOCDB simple family (application)
EP 22168299 A 20220414; FR 2103908 A 20210415; US 202217721950 A 20220415