MULTI-FUNCTIONAL SOUNDER

摘要

PROBLEM TO BE SOLVED: To prevent a diaphragm from being deformed and components of the multi-functional sounder producing both sound and vibration from being damaged due to collision between them on the occurrence of a fall of the multi- functional sounder resulting in causing excessive displacement of the diaphragm. SOLUTION: A guard 31 is provided on an outer circumference of a component such as a yoke 27 fixed to a 2nd diaphragm 25, a recessed part 32 is formed to an inner circumference of a cove 21 to from the sounder in a form that the guard 31 is placed in the recessed part 32. When the displacement of a vibration part is going to be extremely excessive, the guard 31 touches a shoulder 33 of the recessed part 32 to be stopped so as to prevent deformation of the diaphragm and collision of components.