Patent ID: 9632002
Date: 2017-04-25
CPC Classifications: G01M

Claim:
1. A leak test system for testing a semi-finished product of a speaker by detecting whether the semi-finished product of the speaker has a leak, the semi-finished product of the speaker comprising a case, an interface being installed on a surface of the case, the leak test system comprising: a covering element attached on the surface of the case of the semi-finished product of the speaker, so that the interface of the semi-finished product of the speaker is covered by the covering element; a vacuum generator in communication with the covering element, wherein a negative pressure value of the covering element is generated by the vacuum generator; a pressure gauge, wherein an equilibrium pressure value of the covering element is measured by the pressure gauge; and a controller, wherein the controller is electrically connected with the pressure gauge, and the equilibrium pressure value measured by the pressure gauge is transmitted to the controller, wherein if the equilibrium pressure value is equal to the default negative pressure value, the controller judges that the semi-finished product of the speaker has no leak, wherein if an absolute value of the equilibrium pressure value is lower than an absolute value of the default negative pressure value, the controller judges that the semi-finished product of the speaker has the leak, wherein according to a result of comparing the equilibrium pressure value of the covering element with a default negative pressure value, the leak test system judges whether the semi-finished product of the speaker has the leak, wherein the default negative pressure value is the negative pressure value generated by the vacuum generator when a qualified semi-finished product of the speaker is tested.