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Airtightness test method and apparatus

An air-tightness testing and air-tightness detection technology, which is applied in the direction of using liquid/vacuum degree for liquid-tightness measurement and measuring the acceleration and deceleration rate of fluid, etc. Risk, pressure gauge method is not conducive to air tightness evaluation and other issues, to achieve the effect of improving accuracy and achieving accuracy

Active Publication Date: 2018-04-20
SHENZHEN 3NOD DIGITAL TECH +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, when using the pressure gauge method, it is necessary to reserve gas injection holes on the product surface, and the subsequent plugging of the reserved gas injection holes increases the risk of air leakage; and the pressure gauge method is not conducive to the gas injection of each product. The airtightness can be accurately estimated, and the quantification of the airtightness test cannot be realized
When using the differential pressure method, the product to be tested needs to be placed in a closed container, and the sealing degree of the closed container and the pipeline connecting the closed container directly affects the accuracy of the airtightness test results. Not very accurate to use

Method used

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  • Airtightness test method and apparatus
  • Airtightness test method and apparatus
  • Airtightness test method and apparatus

Examples

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no. 1 example

[0047] refer to figure 1 , is a flow chart of Embodiment 1 of the airtightness detection method of the present invention. The present invention also provides a method for air tightness detection, comprising the following steps,

[0048] S1. Preset the bottom dead center of the downward movement of the pressure needle of the airtightness test equipment, and place the passive radiator at the test position of the airtightness test equipment;

[0049] S2. Record the rebound pressure data of the passive radiator during the test;

[0050] S3. Judging the relative airtightness of the passive radiator according to the recorded rebound pressure data.

[0051] The pressure needle of the air tightness testing equipment moves downward to the bottom dead center;

[0052] The pressure needle of the airtightness testing equipment is kept at the bottom dead center, and the rebound pressure data of the passive radiator is recorded until the change of the rebound pressure data of the passive...

no. 2 example

[0060] refer to figure 2 , is a flow chart of Embodiment 2 of the air tightness detection method of the present invention. The present invention also provides a method for air tightness detection, comprising the following steps,

[0061]A1. Preset the bottom dead center of the downward movement of the pressure needle of the airtightness test equipment, and place the passive radiator at the test position of the airtightness test equipment;

[0062] A2. The pressure needle of the air tightness testing equipment moves downward to the bottom dead center, and records the rebound pressure data of the passive radiator during the test;

[0063] A3. Judging the relative airtightness of the passive radiator according to the recorded rebound pressure data.

[0064] The pressure needle of the airtightness testing equipment is kept at the bottom dead center, and the rebound pressure data of the passive radiator is recorded until the change of the rebound pressure data of the passive rad...

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Abstract

The invention discloses an airtightness test method and apparatus and belongs to the technical field of airtightness detection of loudspeaker class products. The airtightness test method includes thefollowing steps that: the bottom dead center of the downward movement of a pressure needle of the airtightness test apparatus is preset, and a passive radiator is arranged at the test position of theairtightness test apparatus; the rebound pressure data of the passive radiator during a testing process are recorded; and the relative airtightness of the passive radiator is judged according to the recorded rebound pressure data. With the airtightness test method and apparatus of the invention adopted, the airtightness of passive radiators can be tested in a batched manner, and the accuracy of airtightness test results is improved.

Description

technical field [0001] The invention relates to the technical field of airtightness detection of sound box products, in particular to an airtightness test method and equipment. Background technique [0002] Because the sealing effect of the speaker directly affects the low-frequency output sound pressure of the speaker products. Therefore, when making speaker products, we often need to test their air tightness. When the product has waterproof requirements, we also need to evaluate its waterproof performance with reference to its airtightness. For passive radiating speakers, the pressure gauge method or differential pressure method is generally used to test their airtightness. [0003] The inventor discovered during the course of researching the present application. In the prior art, when using the pressure gauge method, it is necessary to reserve gas injection holes on the product surface, and the subsequent plugging of the reserved gas injection holes increases the risk ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/32
CPCG01M3/32
Inventor 吴志良范云龙刘志雄
Owner SHENZHEN 3NOD DIGITAL TECH