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Electronic Watch
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A technology for electronic clocks and clocks, which is applied to clocks, electromechanical clocks, electric windings, etc., and can solve problems such as time accuracy reduction.
Pending Publication Date: 2021-08-13
SEIKO EPSON CORP
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[0004] In such electronic timepieces, the quartz vibrator is pressed against the bottom plate by the pressing spring and is fixed so as not to shift, so stress may be applied to the quartz vibrator and the time accuracy may be lowered.
In addition, since the quartz vibrator is glued and fixed on the bottom plate, a large impact such as falling may be applied to the quartz vibrator, and the fixed structure of the quartz vibrator may be bent and cause stress, thereby reducing the time accuracy.
Method used
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no. 2 Embodiment approach
[0042] Next, refer to Figure 7 A timepiece 1a of the second embodiment will be described. In addition, the same code|symbol is attached|subjected to the same structure as 1st Embodiment, and overlapping description is abbreviate|omitted.
[0043] The timepiece 1 of the first embodiment has three first protrusions 35 and three second protrusions 36, but the timepiece 1a of the second embodiment has the first protrusions 35 and the first protrusions 35w instead of them. , the second protrusion 36 and the second protrusion 36w.
[0044] The first protrusion 35 and the first protrusion 35w are provided to protrude from the same surface of the first member 31 toward the first surface 21 of the circuit board 20, and one first protrusion 35w can cover the three clamping positions 231, 232, The two clamping positions 232 , 233 in 233 are clamped by wall-shaped projections. On the normal line overlapping with the clamping position 232 or the clamping position 233, when the end of t...
no. 3 Embodiment approach
[0050] Next, refer to Figure 8 The timepiece 1b of the third embodiment will be described. In addition, in Figure 8 Herein, for convenience of description, a cross-sectional view of the inside of the oscillator device 10 is omitted, the same reference numerals are assigned to the same structures as those in the first embodiment, and overlapping descriptions are omitted.
[0051] In the timepiece 1 according to the first embodiment, the first member 31 provided with the three first protrusions 35 is arranged facing the first surface 21 of the circuit board 20 , and is arranged facing the second surface 22 of the circuit board 20 . There is a second member 32 provided with three second protrusions 36, and the first member of the timepiece 1b of the third embodiment is composed of members 31a, 31b as the first constituent members, and the second member is composed of components 32a, 32b. In addition, the members 31a, 31b, 32a, and 32b are arranged at positions that do not ov...
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Abstract
The present invention provides an electronic timepiece having high precision by mounting an oscillation device that does not easily apply stress to a quartz oscillator. The electronic watch includes an including a package in which an oscillator and a watch control integrated circuit are housed, a circuit board having an elastic function, the circuit board including a first face and a second face, a first member provided with a plurality of first protrusions, and a second member provided with a second protrusion facing the first protrusion with the circuit board interposed therebetween, in which a plurality of clamping positions are clamped between the first protrusion and the second protrusion, A1>P1>A2>0, where A1 is a length of the first protrusion, A2 is a length of the second protrusion, and P1 is a thickness of the oscillation device.
Description
technical field [0001] The present invention relates to electronic timepieces. Background technique [0002] Conventionally, as shown in Patent Document 1, an electronic timepiece using quartz or the like is known to have a quartzresonator that outputs a clocksignal and an integrated circuit that controls the rotation period of a stepping motor based on the clocksignal. In such an electronic timepiece, terminals of a quartz resonator accommodated in a cylindrical case are fixed to a circuit board by soldering. In addition, the quartz resonator is pressed against the base plate by a pressing spring, and is fixed so as not to shift. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2003-287582 [0004] In such an electronic timepiece, the crystal vibrator is pressed against the bottom plate by the pressing spring and fixed so as not to shift, so stress may be applied to the crystal vibrator, thereby reducing time accuracy. In addition, since the crystal vibrator ...
Claims
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Application Information
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