| 摘要 |
<p>#CMT# #/CMT# The membrane has a central base part (4) comprising a T-shaped retaining member (7) that is engaged with an inner stop member (27) at a back cover (14) of a watch case to limit bending of the membrane following excess pressure or vacuum pressure according to environmental conditions, where the stop member is formed of two hook-shaped catches, and the membrane is in the form of dome. The retaining member comprises a stem fixed to the base part and a rectangular tongue fixed to the stem parallel to the base part. The retaining member is integral with the base part of the membrane. #CMT# : #/CMT# Independent claims are also included for the following: (1) a watch case (2) a musical watch or a striking watch (3) a method for assembling a removable acoustic radiating membrane. #CMT#USE : #/CMT# Removable acoustic radiating membrane for use between a middle part and a back cover of a case of a musical watch i.e. water-resistant musical wristwatch, or a striking watch (all claimed) e.g. mechanical striking watch such as water-resistant mechanical striking wristwatch, utilized during diving. #CMT#ADVANTAGE : #/CMT# The retaining member is engaged with the inner stop member at the back cover of the watch case so as to limit the bending of the membrane following excess pressure or vacuum pressure according to environmental conditions, so that the membrane, which is flexible and water-resistant, is not excessively deformed and does not come into contact with parts of a timepiece movement in the event of high pressure according to environmental conditions when the watch is used for deep diving. The stop member is arranged inside the watch case so as to avoid accumulation of dirt in a stop member housing. The membrane can be arranged in a sealed manner in the watch case so as to withstand the high pressure when the watch is used for deep diving. The membrane is designed such that thickness of the membrane is 0.3 mm or less so as to obtain better sound quality of the membrane. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a simplified transverse sectional view of a striking or musical watch provided with a removable acoustic membrane. 4 : Central base part 7 : T-shaped retaining member 14 : Back cover 20 : Timepiece movement 27 : Inner stop member #CMT#METALLURGY : #/CMT# The membrane is made of precious metal or titanium or amorphous metal.</p> |
