| 摘要 |
PURPOSE: A multifunctional smartphone case is provided to effectively prevent the exposure of communication contents on the communication of a smartphone. CONSTITUTION: The outside wall of a folding type flexible spring tube is composed of elastic plastic boards. The outside wall of the folding type flexible spring tube includes a structure folded to several wrinkles. The inner wall of the folding type flexible spring tube is composed of the sound-absorbing material of the porous materials. An upper wall of a multifunctional smart phone case(11) is opened for smoothly moving the smartphone. The mouth of a speaker is matched with the microphone location of the smartphone.
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