| 摘要 |
The alarm device includes an electro-acoustic transducer (10) secured to central part (11) of the back of the watch. the transducer (15) extended along its periphery and surrounds the central portion. The thickness of the central part is such that vibrations caused by the activation of the transducer can produce an audible signal. A device (16, 17) is associated with the back to limit the deformation, and prevents the separation of the transducer from its support. The device includes an annulus (16) which extends on top of the part surrounding the central part. The annulus is attached to the element of the watch and is separated from this part by a space and from the other part by abutment elements which cooperate with the back. |
