Is installed in the tank for the awarded balls the sphere detection switch

摘要

PROBLEM TO BE SOLVED: To provide a ball detecting switch having good performance and little failure at a low manufacturing cost by integrally injection-molding a moving plate and a thin case main body with a conductive synthetic resin, and installing a detecting element in the thin case main body. ;SOLUTION: This ball detecting switch body B opens or closes a moving plate (b) in response to the presence or absence of external pressure to a ball, operates a detecting element in a case main body (a) with its operation piece, and supplies the ball from a ball supply device. The thin case main body (a) and the moving plate (b) connected to it by a hinge section 1 are integrally injection-molded with a conductive synthetic resin to form a ball detecting switch fitted to a prize ball tank, and its manufacture is very simple. The moving plate (b) is rotated via the flexible thin hinge section 1 in particular, and the hinge section 1 has a simple structure and little failure. Since the case main body (a) and the moving plate (b) are integrally injection-molded with the synthetic resin, a product can be obtained at a low cost.;COPYRIGHT: (C)1998,JPO