초록 ▼

In an electronic timepiece 1 having a main plate 10, a drive circuit 36, a stepper motor 33, a train wheel, a dial plate, a power supply 15, and an insulation sheet 12, the insulation sheet 12 covers at least the vicinity of the power supply 15 as well functioning as a guide to position an hour whee

In an electronic timepiece 1 having a main plate 10, a drive circuit 36, a stepper motor 33, a train wheel, a dial plate, a power supply 15, and an insulation sheet 12, the insulation sheet 12 covers at least the vicinity of the power supply 15 as well functioning as a guide to position an hour wheel 11 in an axial direction. Since the insulation sheet 12 has a predetermined size, it is neither dislocated nor removed when it is attached, whereby the insulation sheet 12 can reliably perform insulation, and an assembly property is improved thereby. Further, the insulation sheet 12 can achieve the dual roles of insulation and assembly guide, which can reduce cost and ease an assembly job.

대표청구항 ▼

1. An electronic timepiece comprising:a base frame composed of a synthetic resin; a power supply for providing electric power to a first power rail and a second power rail, said second power rail being a reference ground and being coupled to a covering plate; a drive conversion unit rotatively drive

1. An electronic timepiece comprising:a base frame composed of a synthetic resin; a power supply for providing electric power to a first power rail and a second power rail, said second power rail being a reference ground and being coupled to a covering plate; a drive conversion unit rotatively driven by said electric power; a drive-controlling circuit for controlling the rotation of said drive conversion unit, said drive controlling circuit having an power electrode directly coupled to said first power rail; a time-display member on said base frame and visible from the outside of said electronic timepiece; a time-display wheel rotated by said drive conversion unit and interposed between said base frame and said time-display member, said time-display wheel having a shaft functioning as its axis of rotation; and a planar insulation member for preventing a short-circuit between said first and second power rails, said planar insulation member being disposed between said power electrode and said covering plate, and having an area covering said power terminal and covering at least a portion of said time-display wheel, wherein said planer insulation member includes a guide hole through which said shaft is guided. 2. An electronic timepiece according to claim 1, wherein said planar insulation member substantially covers the overall surface of said base frame that faces said time-display member.3. An electronic timepiece according to claim 1, wherein said planar insulation member further has a metal layer on its surface facing said time-display member.4. An electronic timepiece according to claim 3, wherein said metal layer is formed by dry plating applied to the one surface of said planar insulation member.5. An electronic timepiece according to claim 3, wherein said metal layer is formed of a metal foil bonded to one surface of said planar insulation member.6. An electronic timepiece according to claim 1, wherein said planar insulation member is fixed to said base frame.7. An electronic timepiece according to claim 6, wherein said insulation member is fixed to said base frame by a plurality of plastically deformed protrusions from said base frame, wherein said protrusions maintain said planar insulation member in intimate contact with said base frame.8. An electronic timepiece according to claim 7, wherein said protrusions are mated to hole-openings in said base frame, and said protrusions are plastically deformed by at least one of thermal activation and force impact.9. An electronic timepiece according to claim 6, wherein said planar insulation member is fixed to said base frame by ultrasonic waves.10. An electronic timepiece according to claim 1, wherein said time-display member has a leg and said planar insulation member has an insertion hole through which said leg is inserted.11. An electronic timepiece according to claim 1, said planar insulation member maintains the axial direction of said display wheel.12. An electronic timepiece according to any of claims 1, wherein said time-display member has a main display, and said electronic timepiece is a multi-function timepiece having an auxiliary display different from said main display portion of said time-display member.13. An electronic timepiece according to claim 1, wherein said power supply is a solar cell panel containing solar cells and disposed on one surface of said insulation member.