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JPS5149974

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DESCRIPTION JPS5149974
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a conventional
tuning fork type quartz oscillator fixing structure, FIG. 2 is a cross-sectional view showing one
embodiment according to the present invention, and FIG. It is a sectional view showing an
example. DESCRIPTION OF SYMBOLS 1 ииииииииииииииииии 2 Metal case, 3 иии Sealing member consisting of
insulator, 3b иии Metal frame, 3C ии Lead terminal, 3 d иии Lead terminal, 4 ... lead wire, 5 ... lead wire.
Fig. 1 Fig. 2 ?-199 1 ? 51-49974 (2) Fig. 3! =-'-= ""-,, ++ + + 1, C-++ + 1}-= 1-1-1---1-1-200-
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of the fixing structure of a quartz oscillator. Various improvements have been made to the impact
resistance of a quartz oscillator used as a reference vibration source of a watch, particularly a
tuning fork type quartz oscillator used for a portable watch, and recently, a method of rigidly
supporting it has also been put to practical use. 1-A typical fixing structure is shown in FIG. 1, 1
is a vibrator, 2 is a metal case, 3 is a sealing member made of low melting point glass, 6b is
integrally formed with the member 6 Metal frames 6C and 6d are lead terminals forming a pair
of electrodes. And 4.5 is a lead wire connecting the electrode (not shown) of the vibrator 1 and
the lead terminals 3c, 3a respectively. ?? Engineering-C, m + 1 o @ Nio ? Engineering. It was
directly adhered to part of the Further, as another proposal, there has been a method of forming
a conductive film on a part of the above-mentioned seal I ? и-regardless of adhesion and
soldering or soldering a vibrator. However, adhesion does not have sufficient mechanical
strength against impact, and mechanical strength varies due to bonding conditions such as
flatness of bonding surface or surface roughness of bonding surface, etc. I didn't get it. Further,
in the case of soldering on a conductive film, an extra step of forming the conductive film, which
is sufficient in strength but can be soldered to a part of the insulator, has been required. In
addition, the conductive film needs to have sufficient adhesion strength so as not to peel off from
the insulator. SUMMARY OF THE INVENTION The object of the present invention is made in view
of the above-mentioned points, and is to provide a quartz oscillator fixing structure extremely
04-05-2019
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resistant to mechanical shock and extremely simple. Hereinafter, the present invention will be
described with reference to the drawings. Reference numeral 1 denotes a vibrator, 2 denotes a
metal case, 3 denotes a sealing member formed of a single insulator, and 6b denotes a metal
frame integrally formed with the above 6. Reference numerals 6c and 5a denote lead terminals
forming a pair of electrodes. And 4.5 is a lead wire for connecting the electrode (not shown) of
the vibrator 1 and the lead terminal or 6d respectively. Here, the base portion of the vibrator 1 is
obtained by fusing a part of the metal frame 6b integrally formed with the sealing member 6
directly with a metal fusion member such as solder. Further, in another embodiment shown in
FIG. 3, 1 is a case made of metal, 2 is a case made of metal, 3 is a sealing member made of an
insulator, and 6b is a metal frame formed integrally with the above 6 , 66I 6 d are lead terminals
forming a pair of electrodes. And 4.5 is a lead wire which connects the electrode (not shown) of
vibrator 1 and lead terminal 6C + 3d, respectively. The two-dot chain line in the figure shows a
plan view of the vibrator.
Here, the base portion (side surface) of the vibrator 10 is directly solder-fused to the-ии, part of
the metal frame 3b integrally formed with the sealing member 3. In the embodiment according to
the present invention, the electrodes (not shown) of the vibrator are all separated into the lead
terminals 3C and 6d, but one of the electrodes is electrically connected to the metal frame and
the case 2 at the time of fusion. Either of the lead terminals 6C or 6d can be omitted. As
described above, since the present invention is a fixing structure in which a part of the metal
frame integrally formed with the sealing member and the base of the tuning fork crystal unit are
fused, a sufficient fixing force can be obtained by a simple force structure. Also, since it does not
fuse to the conductive film disposed on a part of the insulator of the sealing member, the
soldering does not require an extra step such as forming a conductive film 4- that can be
Therefore, it is a practically effective means, such as cost reduction being possible.
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