Date :
6.Piezoelectric element , A.C. comment seal
Stick piezoelectric element and A.C. comment seal to the center of case back.
(1) Piezoelectric element
Piezoelectric element must be stuck to case back by thermoplastic adhesive.
Thermoplastic adhesive is already printed to the surface of piezoelectric element.
Heating temperature and time to stick piezoelectric element is shown in the following table.
Material of case back
Heating temperature
Stainless
250
℃
Titanium
250
℃
Check piezoelectric element is definitely stuck to case back after heating.
(2) Sticking position
: 0.35mm and less
: 0.50mm and less
6 seconds
The amount of the misalignment between the center of piezoelectric
element and A.C. comment seal
If the sticking position of piezoelectric element and A.C. comment seal is drastically misaligned or if the
electrical continuity is bad, no sound may occur.
The amount of the misalignment between the center of case back and
piezoelectric element
Heating time
5 seconds
Cal.
YM26A
Attention of casing part structure-02
30/Jan./'15
Rev. : 00
・
・
Case back
Piezoelectric element :
φ
18mm
A.C. comment seal :
φ
10mm
P.10-02
