| 摘要 |
The invention discloses a smoke alarm, which is in the field of machine design, and the smoke alarm comprises a housing, a button column (8.1), a circuit board (4), a smoke collecting box (5), a buzzer (7) and a tune trope (8); and the circuit board (4), the smoke collecting box (5), the buzzer (7) and the tune trope (8) are arranged inside the housing successively. The circuit board (4) is configured with a button module. The smoke collecting box (5) is configured with a first through-hole. The button column (8.1) is configured slidably inside the first through-hole. One end of the button column (8.1) matches with the button module of the circuit board, and another end of the button column (8.1) is connected with the tune trope (8). The tune trope (8) is configured slidably inside the housing, and the sliding direction of the tune trope (8) is the same as the sliding direction of the button column (8.1). The smoke alarm drives one end of the button column (8.1) through the sliding of the tune trope (8) to touch with the button module of the circuit board (4) to emit the button signal. The technical plan of the invention is compact in structure, convenient in use, easy to install and form. |
