| 摘要 |
PURPOSE:To make changeover of the state of speaking simply by returning the speaker switch to off linking with forward movement and backward movement of the hook button, and returning the hand free switch to off linking with going and returning movement of the hook button. CONSTITUTION:A speaker switch button 6 and a hand free switch button 7 are provided in the case of a telephone set. When the switch button 6 is pushed in, a stopping step 31 is locked by a frame 13, and a speaker switch 37 becomes on-state. With the hook button 5 moved forward or backward, an interlocking plate 12 moves vertically and an angular cam 19 presses the side of the switch button 6 through a switch-over plate 24 to release locking. The switch button 7 is also locked, and the interlocking plate 12 is moved vertically by going and returning movement of the hook button 5, and the angular cam 20 releases hooking through the interlocking plate 12. |
