| 摘要 |
A hand-cranked music box comprising a housing, a sound cylinder (8) provided with multiple protrusions, and, fitted with the sound cylinder (8), a transmission gear (6) and sound plates (7), also comprising a crank handle (3) provided with a drive gear (31) that is meshed with the transmission gear (6), a fixing frame (4), and a fixing element (5) fittingly fixed with one extremity of the sound cylinder (8) onto the fixing frame (4), where the transmission gear (6) is fittingly fixed with the other extremity of the sound cylinder (8) onto the fixing frame (4). Because the sound cylinder (8) is fixed within the housing by fitting the fixing element (5) with the fixing frame (4) and by fixing the transmission gear (6) with the fixing frame (4), damages due to being squeezed are prevented. One extremity of the sound cylinder (8) is fixed with the transmission gear (6), when the crank handle (3) is cranked, the drive gear (31) drives the transmission gear (6), the transmission gear (6) drives the sound cylinder (8) into rotation, the protrusions on the sound cylinder (8) generate vibrations with the sound plates (7) to generate sounds, thus producing music. |
