| 摘要 |
PURPOSE:To abolish a spring and a plunger, by using a fitting tool having elasticity in place of an E-ring to provide a detent effect to an indicator drum itself. CONSTITUTION:The fitting metallic tool 20 has elasticity and the center thereof is provided with a notched groove 22 of rectangular form to which a shaft of a bracket 21 is inserted. Two arms 23, 24 are provided unidirectionally around a part provided with the notched groove 22, projections 25, 26 of almost V-shape are provided to the tip of the arms, and a projection 27 of almost V-shape is provided to the opposite side. Further, an annular recess 29 is provided to the indicator drum 28. Then, the bottom of the recess 29 is processed to a sawtooth form. Further, the fitting metallic tool is mounted to the shaft of the bracket 21 and the projection 25, 26, 27 are inserted elastically to the recess 29 of the indicator drum 28. Thus, the detent effect is provided between the fitting metallic tool 20 and the bracket 21. |
