Dual-positioning type bone conduction loudspeaker device

Abstract

The invention discloses a dual-positioning type bone conduction loudspeaker device. The device comprises a supporting part; a magnetic assembly which at least comprises one magnetic part; and a positioning assembly which at least comprises two elastic elements. The magnetic assembly and the positioning assembly are disposed on the supporting part. The two elastic elements are respectively connected with the magnetic assembly. The magnetic assembly and the supporting part remain relatively stationary. Through the arrangement of a dual-positioning structure, the device guarantees that the relative position of a magnetic gap and a voice coil remains the initial position when a bone conduction loudspeaker works, thereby preventing noise sound and guaranteeing the sound quality of the loudspeaker. Moreover, the device can be thinner, is smaller in size, and is lighter in weight. The device improves the sensitivity while reducing the noise sound, and reduces the power consumption.

Description

technical field [0001] The present invention relates to a bone conduction loudspeaker, more specifically, to a double-positioning bone conduction loudspeaker device. Background technique [0002] Generally speaking, the sound vibration is transmitted to the tympanic membrane in the ear through the air, and the vibration of the tympanic membrane is then transmitted to the cochlea through the three ossicles on the inner side of the tympanic membrane, and then the vibration is converted into the vibration of the lymph fluid filled in the cochlea. The vibration of lymph fluid is converted into bioelectrical signals, which are transmitted to the auditory center of the temporal lobe of the brain through the auditory nerve, so that the human brain can recognize sound. The bone conduction speaker omits the process of sound vibration passing through the tympanic membrane and ossicles, and transmits the sound vibration directly to the cochlea through the skull. Hear voices. [0003]...

AI Technical Summary

Problems solved by technology

[0008] Although this bone conduction speaker can work well in principle, it still encounters the following two problems in engineering practice: 1. When the sensitivity increases, there will be noise

However, the requirements for the precise positioning of the voice coil 500 and the softness of the elastic element are contradictory, because the mass of the magnetic system causes the mass of part I to be very large, such as Figure 4 As shown, when the user wears the bone conduction speaker normally, the vibration speaker is placed vertically, and the elastic element that is too soft will hang down and turn outward under the gravity of the large-mass part I, so that the voice coil 500 and The relative position between the above-mentioned magnetic gaps 120 is not at the position originally set by the technician, and the offset occurs

When this deviation is serious, it will cause noise and reduce the sound quality of bone conduction speakers

2. While the noise is reduced, the sensitivity will be reduced

Because in the past, in order to solve the problem of noise, the common choice of technicians was to increase the hardness of the elastic elements, that is, the vibration transmission plate 100 and the vibration plate 200, and to increase the magnetic gap 120. This technical measure will seriously reduce the sound quality while improving the sound quality. The sensitivity of the device makes it necessary for similar devices to consume more power and have a larger volume and bulkier appearance if they want to emit the same loud volume

[0009] In summary, in order to solve the problems of low magnetic field strength, many noises, poor sound quality, low sensitivity, high energy consumption and large volume of the existing bone conduction speakers, it is urgent to improve the structure of the existing bone conduction speakers to meet Consumer needs

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