| 摘要 |
An indicating instrument such as a speedometer has a numerical scale, a belt and a pointer attached to the belt to indicate different scale positions. A display, such as an LCD, may lie within the inner confines of the perimeter of the dial, which may be formed in a variety of shapes. A motor-driven pulley drives the belt to move the pointer around the LCD and to various scale positions. A light source within the pointer may illuminate the pointer, while a separate pointer support structure about the numerical scale may support the pointer from underneath. The belt may be a continuous loop about one spool or a separate, spring-loaded bobbin may be used with the spool to coil and uncoil the belt. An electrically conductive, tensioning post may supply electricity to the belt and the lighted pointer. Teeth on the spool may coincide with perforations in the belt.
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