Piezoelectric active buzzer and its assembly process

Abstract

The invention discloses a piezoelectric type active buzzer and assembly technology thereof, the buzzer comprises a face shell and a circuit board main body, a buzzing piece is formed in the face shell and connected to the bottom shell, a guide needle is formed on the bottom shell, the guide needle pin on the guide needle passes through the bottom shell, the guide needle spring sheet on the guide needle presses the contact of the guide needle on the buzzing piece, the clamping position of the bottom shell is locked with the back locking structure of the face shell, the guide needle is fixed on the circuit board main body, the circuit board main body is connected to a rubber shell or encapsulation glue; the production technology comprises the steps as follows: assembling the buzzer sound device, assembling the circuit board main body, assembling the circuit board main body on the buzzer sound device, fixing the guide needle on the circuit board main body, covering the circuit board with the rubber shell or encapsulation glue. The production technology of the piezoelectric type active buzzer is simple, the production period is short, and the quality consistency and controllability are good.

Description

technical field [0001] The invention relates to a piezoelectric active buzzer and an assembly process thereof. Background technique [0002] The piezoelectric active buzzer uses the piezoelectric effect of the piezoelectric ceramic to drive the vibration of the metal sheet to make a sound. It is widely used in computers, printers, copiers, alarms, electronic toys, automotive electronic equipment, telephones, timers, etc. It can be used as a sound-generating device in electronic products such as devices. At present, most of the fixing methods of piezoelectric active buzzer buzzers in the world are fixed by glue, and the connection method of buzzer and circuit board adopts welding connection methods such as enameled wire, silk covered wire or wire, which is cumbersome and complicated. Low quality controllability, low production efficiency, long production cycle and inability to realize equipment production and other defects, and the existing buzzer production failure rate is ...

AI Technical Summary

Problems solved by technology

At present, most of the fixing methods of piezoelectric active buzzer buzzers in the world are fixed by glue, and the connection method of buzzer and circuit board adopts welding connection methods such as enameled wire, silk covered wire or wire, which is cumbersome and complicated. Low quality controllability, low production efficiency, long production cycle and inability to realize equipment production and other defects, and the existing buzzer production failure rate is high, which cannot meet the needs of users

[0003] In addition, the existing piezoelectric active buzzer circuit board cannot work independently to output a wave audio signal. It oscillates and sends out a square wave audio signal by extracting the feedback signal from the buzzer chip. The frequency of the signal is affected by the frequency of the buzzer chip. Influence, poor frequency consistency

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