Sound box structure

Abstract

A sound box structure includes a shell ( 10 ) and a speaker ( 30 ) received therein. The shell defines a resonance chamber ( 114 ) and a receiving chamber ( 115 ) communicating therewith. The speaker is received in the receiving chamber. The shell is Mg—Al alloy.

1 . A sound box structure, comprising:
 a shell of Mg—Al alloy comprising a resonance chamber and a receiving chamber communicating therewith; and   a speaker received in the receiving chamber.   
     
     
         2 . The sound box structure of  claim 1 , wherein the shell comprises a top cover and a bottom cover engaged therewith, wherein both the top and bottom covers are semi-enclosed. 
     
     
         3 . The sound box structure of  claim 2 , wherein each of the top and bottom covers comprises a bottom wall and a sidewall extending from an outer periphery thereof, and the resonance chamber and receiving chamber are enclosed by the bottom walls and the sidewalls of the top and bottom covers. 
     
     
         4 . The sound box structure of  claim 3 , wherein each of the top and bottom covers comprises a step at a top end thereof, and the step of the top cover engages with the step of the bottom cover. 
     
     
         5 . The sound box structure of  claim 3 , wherein a tab extends from at least one of the top and bottom covers, and is enclosed by a rubber washer. 
     
     
         6 . The sound box structure of  claim 3 , wherein a supporting portion extends from the bottom cover and within the receiving chamber, and an acute angle is defined between the bottom wall of the bottom cover and a top surface of the supporting portion. 
     
     
         7 . The sound box structure of  claim 6 , wherein the sidewall of the top cover has different heights, and an actual angle is defined between the bottom walls of the top and bottom covers. 
     
     
         8 . The sound box structure of  claim 6 , wherein the bottom wall of the top cover defines a through hole aligning with the speaker and receiving chamber. 
     
     
         9 . The sound box structure of  claim 8 , wherein the speaker comprises a plurality of front tone holes and a plurality of rear tone holes opposite to the front tone holes, and wherein the end of the speaker comprising the rear tone holes abuts the supporting portion, and the end of the speaker comprising the front tone holes abuts an outer edge of the through hole. 
     
     
         10 . The sound box structure of  claim 2 , wherein at least one clapboard extends from the bottom cover and within the resonance chamber, the clapboard, the bottom wall of the bottom cover and the side wall of the bottom cover cooperatively forming an inverted tube, and the bottom cover defining an inverted hole communicating with the inverted tube.