| 摘要 |
The present invention is provided with a telescopic sound box, which Several coaxial expansion sections, each two neighbor expansion sections are connected by an elastic section made of elastic material, formed an expansion body by the expansion sections series connected in order, a speaker which is loaded on the bottom surface of the expansion section in one end of the expansion body; the expansion body has a compressive state and an expanding state; in the compressive state, each elastic section and its expansion section overlap in the axial direction; in the expanding state, each elastic section and its expansion section are axial distributed; the expansion body is disposed with a lockable air valve as the air way in the expansion body inside and outside. The present invention is applied with an expansion body formed of expansion sections and elastic sections, the sound box has enough size and it can be compressed. The elastic section is made of flexible material to connect the expansion section. So that in the expanding state, the size of the resonance space inside the expansion body is stable when the speaker works, and it provides with well anti-deformation capacity. |
