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2. 发明授权

US3872420A Rotary potentiometer 失效
标题翻译：旋转电位计
公开(公告)号：US3872420A
公开(公告)日：1975-03-18
申请号：US43620974
申请日：1974-01-24
申请人： BLAUPUNKT WERKE GMBH
发明人： KOCH DIETER , GRAF PETER-JOSEF
IPC分类号： H01C10/00 , H01C10/14 , H01L9/02
CPC分类号： H01C10/14 , Y10S338/01
摘要： The resistance element of a potentiometer is a flat semicircular strip with ends having outward extensions providing jutting contact tabs that may be slipped into spring clips and inward extensions fitting into notches in a centering boss of the carrier plate of the device so that the resistance element can be accurately positioned without affixation. The rotating wiper is mounted on the inside surface of a drive wheel that has one contact that slides along the resistance element and a pair of spring contacts that engage an annular surface of a contact lug that passes under the resistance element in a channel in the carrier plate. The outer surface of the drive wheel has a spiral groove that guides a pointer. The axis of the drive wheel and of the potentiometer is skewed relative to the position of the thumb wheel by which the drive wheel is propelled, so that the spiral ridge on the thumb wheel will engage the crown teeth of the drive wheel at only one location. If the thumb wheel is made to project through a slot in a panel, the pointer will move essentially across the slot along or near the thumb wheel.
摘要翻译：电位计的电阻元件是一个扁平的半圆形条带，其端部具有向外的延伸部，其提供突出的接触片，其可以滑入弹簧夹中，并且向内延伸部配合到装置的承载板的定心凸起中的凹口中，使得电阻元件准确定位，无需固定。旋转的刮水器安装在驱动轮的内表面上，该驱动轮具有沿着阻力元件滑动的一个触点，以及一对弹簧触点，其接合在载体的通道内通过电阻元件下方的接触片的环形表面盘子。驱动轮的外表面具有引导指针的螺旋槽。驱动轮和电位器的轴线相对于驱动轮被推进的指轮的位置偏斜，使得拇指轮上的螺旋脊将仅在一个位置处接合驱动轮的冠齿。如果拇指轮通过面板上的槽突出，则指针将基本上沿着或靠近拇指轮的狭槽移动。

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