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1. CN212486709 - Loudspeaker box

Office
China
Application Number 202021233809.6
Application Date 29.06.2020
Publication Number 212486709
Publication Date 05.02.2021
Publication Kind U
IPC
H04R 1/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
02Casings; Cabinets; Mountings therein
H04R 1/28
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
28Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
CPC
H04R 1/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
02Casings; Cabinets ; ; Supports therefor;; Mountings therein
H04R 1/28
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H04R 9/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
9Transducers of moving-coil, moving-strip, or moving-wire type
06Loudspeakers
H04R 9/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
9Transducers of moving-coil, moving-strip, or moving-wire type
02Details
Applicants AAC TECHNOLOGIES (SINGAPORE) CO., LTD.
瑞声科技(新加坡)有限公司
Inventors LI HONG
李红
LIU HAILIN
刘海林
WANG WU
王武
Agents 广州市越秀区哲力专利商标事务所(普通合伙) 44288
Title
(EN) Loudspeaker box
(ZH) 扬声器箱
Abstract
(EN) The utility model provides a loudspeaker box, which comprises a shell and a sound production single body, and is characterized in that the shell is provided with an accommodating space; the sound production single body is accommodated in the accommodating space, and the accommodating space is divided into a front cavity and a rear cavity by the sound production single body; the rear cavity is provided with a first rear cavity body and a second rear cavity body, the second rear cavity body is filled with sound absorption particles, and a sound absorption piece capable of blocking movement of the sound absorption particles is arranged on the inner side face of the second rear cavity body in a protruding mode. According to the loudspeaker box, the sound absorption piece located in the secondrear cavity is arranged on the inner side face of the shell in the protruding mode, the sound absorption piece can block movement of the sound absorption particles, the change of the lowest resonancefrequency (F0) caused by abrasion of the sound absorption particles is further reduced, and therefore the acoustic performance of the loudspeaker box with the large virtual sound cavity length is effectively improved.
(ZH) 本实用新型提供一种扬声器箱,扬声器箱包括壳体和发声单体,所述壳体具有收容空间;发声单体收容于所述收容空间内,所述发声单体将所述收容空间分隔为前腔和后腔;所述后腔具有第一后腔和第二后腔,所述第二后腔内填充有吸音颗粒,围成所述第二后腔的内侧面凸设有可对所述吸音颗粒的运动进行阻断的吸音件。通过所述壳体的内侧面凸设有位于所述第二后腔内的吸音件,所述吸音件可对所述吸音颗粒的运动进行阻断,进一步降低因吸音颗粒磨损带来的最低共振频率(F0)的变化,因此,有效改善了虚拟声腔长度较大的扬声器箱的声学性能。
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