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Low frequency buzzer

A buzzer and low-frequency technology, applied in the field of piezoelectric devices, can solve the problems of small attenuation of low-frequency sound and long transmission distance, and achieve the effect of improving the low-frequency response effect.

Inactive Publication Date: 2014-06-25
AUDIOWELL ELECTRONICS GUANGDONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For low-frequency and high-frequency sounds with the same energy, the attenuation of low-frequency sounds is small during the transmission process, and the transmission distance is long. The frequency of traditional piezoelectric buzzers can rarely reach below 1KHz

Method used

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  • Low frequency buzzer
  • Low frequency buzzer

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] refer to figure 1 , figure 2 , the present invention is a low-frequency buzzer, which includes a vibrating membrane 1 erected in a bracket and a piezoelectric ceramic sheet 2 attached to one side of the vibrating membrane 1, and a seal is formed between the bracket and one side of the piezoelectric ceramic sheet 2. The cavity and the bracket are located on the other side of the piezoelectric ceramic sheet 2 and a sound hole 32 is provided, and the piezoelectric ceramic sheet 2 is connected with an electrode lead 5 protruding from the bracket.

[0017] This low-frequency buzzer fixes the diaphragm in a bracket with a closed cavity, and the closed cavity forms a pressure chamber, which can make the diaphragm 1 be affected by the change of gas pressure in the pressure chamber during the vibration process, and improve the low frequency of the buzzer. Response effect, while also avoiding the influence of the external environment on the electronic components in the cavity. ...

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Abstract

The invention discloses a low frequency buzzer. The low frequency buzzer comprises a vibrating diaphragm arranged in a support in an erecting mode and a piezoelectric ceramic piece attached to one side of the vibrating diaphragm. A closed cavity is formed between the support and one side of the piezoelectric ceramic piece. A sound making hole is formed in the portion, on the other side of the piezoelectric ceramic piece, of the support, and an electrode lead connected with the piezoelectric ceramic piece extends out of the support. According to the low frequency buzzer, the vibrating diaphragm is fixed in the support of the closed cavity, the closed cavity forms a pressure cavity, the vibrating diaphragm is influenced by the change of gas pressure in the pressure cavity in the vibrating process, the bass response effect of the buzzer is improved, and electronic components inside the cavity are prevented from being influenced by the external environment. The low frequency buzzer is used in the field of piezoelectric devices.

Description

technical field [0001] The invention relates to the field of piezoelectric devices, in particular to a piezoelectric low-frequency buzzer. Background technique [0002] Piezoelectric buzzer mainly uses the inverse piezoelectric effect of piezoelectric ceramics, which is driven by electrical signals and converted into mechanical deformation, which pushes the air to vibrate and cooperates with the sound cavity to produce sound, thereby realizing the function of the device. [0003] For people, especially special groups and people in special conditions, such as the elderly, hard of hearing, and sleeping people, etc., they are less sensitive to high-frequency sounds and more sensitive to low-frequency sounds. Low-frequency sounds are easy to remind and warn them. The low-frequency sound is deep, the rhythm is clear, and it is not harsh. For low-frequency and high-frequency sounds with the same energy, the attenuation of low-frequency sounds is small during the transmission pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K9/122
CPCG10K9/122
Inventor 陈胜高文杰林共彭秋成
Owner AUDIOWELL ELECTRONICS GUANGDONG
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