| 摘要 |
PURPOSE:To make many switch inputs possible by means of a small number of switch terminal patterns by providing a recessed or projecting portion on the outward rotary bezel of a jacket portion and as well providing plural switch terminal patterns at regular intervals on a circuit substrate. CONSTITUTION:Four switch terminal patterns 12a are arranged at intervals of 90 deg. on a circuit substrate 12, and the projecting portion 1a of an outward rotary bezel 1 is located on the same circumference as the switch terminal patterns 12a and the projecting portion 1a has the length of the circular arc of 90 deg.. The projecting portion 1a is always in contact with at least one of the switch terminal patterns 12a and also it does not come into contact with all of them. Namely, the projecting portion 1a is a circular arc shape of more than 90 deg. and under 270 deg.. By the combination of four switch terminal patterns of the circuit substrate 12 and the projecting portion 1a(1) of the bezel 1, the bezel 1 is rotated every 60 deg. so as to be made one rotation so that a switch 6 is inputted. With this arrangement, more number of switch input than the number of the switch terminal patterns can be set. |
