Unidirectional planar sounding device and fixing structure for improving tone quality thereof

Abstract

The invention relates to a unidirectional planar sounding device and a fixing structure for improving tone quality thereof. The fixing structure comprises a first structural part and a second structural part. A first groove corresponding to one end of the power unit is formed in the middle of one side of the first structural part and used for installing and fixing one end of the power unit, the surface area of the other side of the first structural part is larger than that of one end of the power unit, and the other side of the first structural part is used for being connected with a vibrationmedium. The middle of one side of the second structural part is provided with a second groove corresponding to the other end of the power unit, the second groove is used for installing and fixing theother end of the power unit, the surface area of the other side of the second structural part is larger than that of the other end of the power unit, and the other side of the second structural partis used for being connected with the base. When the power unit is installed between the vibration medium and the base through the fixing structure, the radial bearing force of the power unit is increased, and the strength of the unidirectional plane sounding device is improved.

Description

technical field [0001] The invention relates to a sounding device, in particular to a one-way planar sounding device and a fixing structure for improving its sound quality. Background technique [0002] The working principle of the one-way transparent planar sounding device is that the drive circuit transmits the audio signal to the power unit through the signal line, and the power unit generates vibrations of corresponding frequencies, which pushes the flat transparent material diaphragm connected to it to vibrate, thus pushing the air to vibrate to generate sound. [0003] The power unit in the prior art is usually set up around the black ink area of ​​the base glass, and the distance between the power units is equal, and the two ends of the power unit are bonded to the vibrating surface and the The base glass is directly bonded together, and the electrodes of the power unit are welded with the signal lines by welding. [0004] In the process of realizing the present inv...

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Problems solved by technology

[0005] 1. The material of the power unit in the prior art is ceramic, and its mechanical strength is relatively brittle;

[0006] 2. Please refer to Figure 9 , which shows a schematic structural view of the power unit in the prior art. The structure of the power unit is thin and long, resulting in a relatively large bearing force in the axial direction (that is, the vibration direction) and a small bearing force in the radial direction, and due to the power The cross section of the upper and lower ends of the unit is small, making the glue easy to peel off;

[0008] 4. Due to the small cross-sectional area at both ends of the power unit, when it is fixed, its contact area with the vibration surface is too small, resulting in the transmission of the vibration force of the power unit to the vibration surface will be weakened when the audio is played, making the volume decrease and the tone sharp;

[0009] 5. Due to the restriction of the aluminum fixed frame around the power unit, the vibration of the power unit is restrained by the aluminum fixed frame, which weakens the vibration force. The farther away from the aluminum fixed frame, the smaller the constraint force on the power unit is. The greater the vibration amplitude of the vibration surface, the worse the effect of the bass part

The one-way planar sounding device of this solution only has better sound quality in the midrange and high-pitched parts when playing audio, and has a weak sense of vibration in the low-pitched part. color reproduction

[0010] 6. If the vibration medium 3 and the base 4 are irregular surfaces, such as uneven surfaces, corrugated surfaces, curvature surfaces, etc., it is difficult for the power unit to be fixed on the vibration medium 3 and the base 4 without any treatment. between

[0011] At the same time, most of the improvement schemes for the bass effect of the sound generating devices in the prior art are aimed at the improvement methods proposed for opaque sound generating devices, which have not been applied on transparent sound generating devices, and the improvement methods cannot meet the requirements of such sound generating devices in rail transit side windows. and application conditions on car sunroofs

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