A receiver acoustic testing device and acoustic testing system

Abstract

The invention discloses a telephone receiver acoustic testing device and a telephone receiver acoustic testing system. The device comprises a driving device and an output device, the driving device comprises a bracket, a guide rail, a pressing component and a testing adjustment device, the guide rail is installed on the bracket, the pressing component used for inputting testing signals is fixed tothe guide rail, and the pressing component adjusts the abut joint position with a tested telephone receiver via the testing adjustment device; the output device comprises a testing seat, a locating cavity and a coupling cavity are formed in the testing seat, and a sealing ring is arranged between the locating cavity and the coupling cavity of the tested telephone receiver. The telephone receiveracoustic testing device and system can achieve automatic acoustic testing, the testing efficiency is higher, the test result is more accurate, and the product yield is improved.

Description

technical field [0001] The invention relates to the technical field of acoustic testing, in particular to a receiver acoustic testing device and an acoustic testing system. Background technique [0002] The existing receiver generally refers to the moving iron receiver, and its working principle is: the changing audio electric signal is fed into the voice coil, the voice coil is placed in the magnetic gap of a permanent magnet magnetic circuit, and the changing electromagnetic field force of the voice coil due to the changing current , that is, driven by the Lorentz force to vibrate up and down, and drive the diaphragm to drive the front and rear air to generate sound waves. [0003] Although there are many types of receivers with other transduction principles, the moving iron receiver has become the mainstream electroacoustic device for audio terminals in mobile phones and fixed phones because of its high cost performance, mature production technology, changing dimensions a...

AI Technical Summary

Problems solved by technology

[0007] However, the receiver testing device of the prior art has a large measurement error due to purely manual testing.

In addition, the operator manually pushes the test needle of the device to realize the connection with the circuit terminal, which requires the operator to spend a long time to complete the work of aligning and confirming the establishment of the electrical connection, and the difference in the contact point of each test needle is likely to cause test distortion or poor stability

And the test and position adjustment are done by hand, which makes the production efficiency of the receiver low

Moreover, the existing receiver test does not adequately position the receiver. Since the test needle is easily deflected during the manual operation test, the receiver shell is scratched, and there are hidden dangers in product quality.

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