| 摘要 |
<p>The coder has a rotation shaft (11) pulled by a wheel. A plastic notched wheel (10) is arranged interdependent of the rotation shaft. A flexible blade (20) includes a projected notch (21) attached with the notched wheel so as to define angular stop positions of the notched wheel. The notched wheel and the flexible blade comprise an alternator of electric current conducting zones and insulating zones arranged to complete and open alternatively with an electrical circuit of the coder when the notched wheel is pulled by the wheel.</p> |
