Passive radiator and sound production device

Abstract

The invention discloses a passive radiator and a sound production device, the passive radiator comprises a frame, a vibrating diaphragm, a folding ring and a damping assembly, and the frame is provided with an opening; the vibrating diaphragm is arranged in the opening; the inner side of the folding ring is connected with the vibrating diaphragm, and the outer side of the folding ring is connected with the edge of the opening; the damping assembly comprises first damping pieces and second damping pieces which are connected, the first damping pieces are arranged on the surface of the vibrating diaphragm, the second damping pieces are arranged on the surface of the folding ring, the first damping pieces are arranged on the surface of the vibrating diaphragm in a central symmetry mode, the first damping pieces are made of elastic materials, and the second damping pieces are made of flexible materials. According to the passive radiator, the low-frequency vibration frequency can be improved, and the distortion phenomenon is avoided while the radiation quantity is increased.

Description

technical field [0001] The invention relates to the technical field of sound-generating device structures, in particular to a passive radiator and sound-generating equipment. Background technique [0002] Passive radiators, commonly known as false speakers, do not contain a drive system themselves, but rely on active speakers to work, and are driven to convert the heat and kinetic energy generated by the compressed air generated by the active speakers during the acoustic-electric transduction process into acoustic signals. Generally, a passive radiator is composed of a diaphragm, a ring, and structural parts. In order to improve its low-frequency radiation effect, the existing structure only adds a counterweight to the diaphragm. In this way, the low-frequency resonance frequency can be reduced, but also It will make the diaphragm too heavy to push, and the sensitivity will decrease; while another structure improves the compliance by changing the ring material to make it eas...

AI Technical Summary

Problems solved by technology

Generally, a passive radiator is composed of a diaphragm, a ring, and structural parts. In order to improve its low-frequency radiation effect, the existing structure only adds a counterweight to the diaphragm. In this way, the low-frequency resonance frequency can be reduced, but also It will make the diaphragm too heavy to push, and the sensitivity will decrease; while another structure improves the compliance by changing the material of the ring to make it easy to deform, but it is easy to cause the diaphragm to tilt, flip and distort, and the effect of improving the low frequency is uniform. not good

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