| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixation structure, for a crystal oscillator in an electronic watch, which can make a movement easily thin, which does not require an excess process to bend the electrode of the crystal oscillator or a circuit board, whose costs can be reduced, which can prevent a soldered circuit pattern from being stripped due to the bending and working operation of the electrode and which can stabilize a quality. SOLUTION: This fixation structure is formed in such a way that it is provided with a cutout 10 which is formed in advance in one end part of a line 9, to be bent, between the crystal-oscillator connection part 4 of a circuit board 3 and a circuit-board body part 5 and that it is provided with the protrusion part 14 of a circuit pressor foot plate 13 mounted on a wheel train receiver so as to protrude to a crystal-oscillator housing groove part 8. The electrode 2 of a crystal oscillator 1 is soldered and fixed to the electrode fixation part 4a of the crystal-oscillator connection part 4 of the circuit board 3. After that, when the crystal oscillator 1 is housed in the crystal-oscillator housing groove part 8, the upper-part outer circumferential face of the crystal oscillator 1 comes into contact with the lower end edge of protrusion part 14 of the circuit pressor foot plate 13 so that a downward pressure force acts on the crystal oscillator 1, and the circuit board 3 is formed so as to be bent downward in the line 9 to be bent. |
