| 摘要 |
An electric box connected between a telephone base and a handset, including a housing having a hollow upright shaft on the inside, a rotary member turned about the upright shaft of the housing, a spiral spring mounted in the housing and having two ends respectively fastened to the upright shaft and the rotary member, a holder fastened to the rotary member and holding a plurality of concentrically arranged metal rings, a plurality of terminals mounted in respective holes in the housing and supported on respective metal springs respectively disposed in contact with the metal rings, a flat cable wound around the rotary member and having one end extended out of the housing and mounted with a module plug for connection to the handset and an opposite end connected to the metal rings, a mounting block mounted on the housing on the outside, a module plug mounted on the mounting blocks for connection to the telephone base and having contacts respectively disposed in contact with the terminals.
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