Microphone bracket for testing noise of air intake idling

Abstract

The invention discloses a microphone bracket for testing noise of air intake idling. The microphone bracket comprises a base, a sleeve is fixedly welded to the upper end of the base, an inner rod is slidably inserted into the sleeve, first inserting holes are formed in one sides of the sleeve, a pin column is inserted and fixed into the first inserting holes, second inserting holes corresponding to the first inserting holes are formed in the side wall of the inner rod at equal intervals, one end of the pin column sequentially penetrates through the first inserting holes and the second inserting holes, a fixing seat for fixing a microphone is rotatably connected with the upper end of the inner rod, a clamping groove is formed in the upper end of the fixing seat, an elastic anti-skid pad isfixedly bonded on the inner wall of the clamping groove, and an adjusting foot-pad is arranged at the lower end of the base. According to the microphone bracket, the height can be adjusted according to the height of an air inlet of a vehicle from the ground, thus the testing work is quickly completed, the elastic anti-skid pad is arranged in the fixing seat, and the wear of the microphone caused by disassembly and assembly can be reduced.

Description

technical field [0001] The invention relates to the technical field of automobile air intake idling noise, in particular to a microphone bracket for testing intake air idling noise. Background technique [0002] The NVH of a car refers to noise, vibration and roughness. Since the above three appear at the same time and are inseparable in mechanical vibrations such as cars, they are often put together for research. In the NVH index of the whole vehicle, the intake air Noise is an important factor affecting the noise in the car. When testing the noise of the whole vehicle, it is necessary to collect the noise data of the air intake. When the vehicle is idling, the microphone needs to be fixed with a bracket, and the noise data is collected at a certain test angle and test distance. . [0003] At present, when testing the idling noise of the air inlet, the microphone is directly glued to the air inlet with tape, which has low efficiency and poor accuracy. In the case of many v...

AI Technical Summary

Problems solved by technology

[0003] At present, when testing the idling noise of the air inlet, the microphone is directly glued to the air inlet with tape, which has low efficiency and poor accuracy. In the case of many vehicles, it takes a lot of time to arrange and disassemble the microphone, and the test work cannot be completed quickly. Disassembly will cause damage to the microphone, so we propose a microphone stand for testing intake air idle noise

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