The piezo-electric device (9) which connects a glass (8) to a movement (3) of the timepiece (1) is arranged in such a way as to deform in flexion in response to an exciting signal applied to its electrodes. The attachment zones (9a,9b) of this device (9) to this glass (8) and respectively to this movement (3) are distinct one from the other when the timepiece (1) is looked at in a direction perpendicular to the planes of the principal faces of the device (9). Thanks to this arrangement, the sound produced by the displacement of the glass (8) when the exciting signal is applied to the electrodes of the piezo-electric device (9) is more intense than in a known timepiece.
The device for mounting and fastening at least one gong of a striking mechanism of a watch movement in which each gong (1, 14) is solidly attached to a heel (2, 15) and includes means for the positioning and temporary fastening (5, 6, 8, 9, 20) of the heel or heels and their gongs to a bottom plate (7) of the watch movement. It includes at least one crystal support (21) fastened underneath the crystal (22) of a case holding the watch movement, and means for guiding and positioning (5, 6, 11) that allow the gongs (1, 14) and their heels (2, 15) to be moved into their working position where each heel is in touch with the crystal support (21) or with another heel. It further includes means for fastening (13) gongs and their heels to the crystal support (21) in such a way that these gongs and their heels are tied to the crystal (22).
