Gas throttling device for driving vibrating diaphragm to adjust flow rate by using memory alloy wire

Abstract

The invention provides a gas throttling device for driving a vibrating diaphragm to adjust a flow rate by using a memory alloy wire. The gas throttling device comprises an outer upper cover, a lower bottom cover, a vibrating diaphragm component, the memory alloy wire, a PCB and a piece of throttling screen cloth; the PCB is installed on the outer side of the lower bottom cover, and the throttlingscreen cloth is installed on the lower bottom cover; the outer upper cover covers the lower bottom cover to form an accommodating space, and an upper and lower through gas hole is formed in the middleof the outer upper cover; the vibrating diaphragm component is installed in the accommodating space, and the top end of the vibrating diaphragm component blocks the gas hole from the inner side; andthe memory alloy wire is connected with the PCB and the vibrating diaphragm component, different voltages or signals are applied to the memory alloy wire according to demands, so that the memory alloywire generates shrinkage of different degrees and drives the vibrating diaphragm component to move downward, so that the vibrating diaphragm component generates different gaps with the outer upper cover, and then active control of the gas flow can be achieved. The gas throttling device provided by the invention has strong practicability and has strong promotion significance.

Description

Technical field [0001] The invention relates to a gas throttling device, in particular to a gas throttling device that uses a memory alloy wire to drive a diaphragm to adjust flow. Background technique [0002] Loudspeaker, also known as "horn", is a very commonly used electro-acoustic transducer, which is often used in sound-producing electronic and electrical equipment. The driving principle of the loudspeaker is that the voice coil and the magnet interact with each other and drive the diaphragm to push the air to produce sound. The cavity structure of traditional sound-producing electronic and electrical equipment is a completely enclosed design except for the sound outlet. The vibration of the diaphragm is also It will increase the internal pressure of the sound-producing electronic and electrical equipment, which will hinder the vibration of the speaker. In order to improve the above-mentioned problems, most of the existing sound-producing electronic and electrical equipmen...

AI Technical Summary

Problems solved by technology

[0004] For this reason, the purpose of the present invention is to provide a gas throttling device that uses a memory alloy wire to drive the diaphragm to adjust the flow rate, so as to solve the problem that the current flow of sound-producing electronic and electrical equipment cannot be actively controlled

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