| 摘要 |
Headphones or a headset comprise a pair of electro-acoustic transducers (1,2), both ear-pieces for headphones and an ear¬ piece and a microphone for a headset, are carried at opposite ends of a curved headband (3) that is formed by a chain of links (500-511) that are hinged to one another and the transducers (1,2) transversely of the headband (3). Each link (5) involves a shell-casing (8) that on its underside at one end has a first pair of mutually-spaced projecting lugs (9) and at the opposite end has a second pair of mutually-spaced projecting lugs (10) that nest with the first pair of lugs (9) of the next- following link (5). The nested lugs (9,10) are pierced transversely and pivot pins (11) inserted in the piercings to establish hinges (7) between the links (5). The transducers (1,2) are correspondingly hinged to the ends of the headband (3) in order to enable the headphones or headset to be rolled up lengthwise of the headband (3) with one the transducers, namely an ear-piece (2), located centrally within the roll and the other transducer (1) turned in on the outside. End links (500,511) and a central pair of the links (505,506) are shorter than the other links to facilitate compactness of the roll-up. |
