The film which prevents the electric continuity canning

摘要

PROBLEM TO BE SOLVED: To maintain sufficient strength without increasing costs, and to thin a movement by providing a film for covering the upper surface of a coil block and its pinching means. ;SOLUTION: Protection structure is composed of a coil block 1, a film 2 for fitting to, covering, and protecting the upper surface shape of the coil block, and a pinching means B for pinching the film 2. Then, as the material of the film 2, resin such as polyethylene resin and rubber such as styrene-butadiene rubber are used, and the thickness is satisfactorily set to approximately 0.025 to 0.2 mm. Also, the pinching means B of the film 2 is preferably composed between the lower surface of a circuit presser plate 3, and the upper surface of a battery minus terminal 4. As a means, either one or both of an epoxy- family adhesive or the like, and a physical retention means can be used, thus improving the design property of a clock.;COPYRIGHT: (C)2001,JPO