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A tilt detecting device for use in various electronic apparatuses such as a watch, electronic notebook or the like. The tilt detecting device includes a projection in a part of a ball containing portion formed in an interior of an insulation case. In the insulation case, two conductive pins are disp

A tilt detecting device for use in various electronic apparatuses such as a watch, electronic notebook or the like. The tilt detecting device includes a projection in a part of a ball containing portion formed in an interior of an insulation case. In the insulation case, two conductive pins are disposed thereon in parallel with each other with a predetermined space, which have a large diameter portion, a small diameter portion and a step between them. In the ball containing portion, a conductive ball is contained therein, which is movable along in a longitudinal direction of the two conductive pins in the ball containing portion when the insulation case is inclined. Only when the insulation case is inclined, the conductive ball is at a position on the large diameter portions to be electrically in contact with the two conductive pins to output a corresponding detection signal.

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1. A tilt detecting device comprising:an insulation case having a ball containing portion formed in an interior thereof; two conductive pins which are disposed in parallel with each other with a predetermined space therebetween in the insulation case, each of the two conductive pins having a large d

1. A tilt detecting device comprising:an insulation case having a ball containing portion formed in an interior thereof; two conductive pins which are disposed in parallel with each other with a predetermined space therebetween in the insulation case, each of the two conductive pins having a large diameter portion, a small diameter portion, and a step between the large diameter portion and the small diameter portion; and a conductive ball which is contained in the ball containing portion of the insulation case, and which is movable along in a longitudinal direction of the two conductive pins in the ball containing portion when the insulation case is inclined by at least a predetermined angle; wherein when the insulation case is inclined by the predetermined angle the conductive ball is brought electrically into contact with one of the large diameter portions and the small diameter portions of the two conductive pins, and when the insulation case is not inclined by the predetermined angle the conductive ball is not brought electrically into contact with any of the large diameter portions and the small diameter portions.