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空心触点亦称环状白金,早在五十年代日本、西德等汽车工业发达国家就已经采用。它的特点是将分电器的触点由原来的实心动、静触点改为动触点实心,静触点中间空心成环状。空心触点与实心触点相比较有如下明显优越性:1．改善了两触点接触状况,两实心触点时易形成点接触,而空实两触点接触却易形成线接触,因而有较大的接触面积,可以减小接触电阻,使工作时电流通过条件改善。
Hollow contacts, also known as platinum ring, as early as the fifties Japan, West Germany and other developed countries have already adopted the automotive industry. It is characterized by the distributor’s contacts from the original solid dynamic and static contact to the moving contact solid, static contact hollowed out into the middle of the ring. Hollow contacts and solid contacts compared to the following obvious advantages: 1. Improve the contact status of the two contacts, two solid contact is easy to form point contact, but the contact is empty and real contact is easy to form a line contact, which has a larger contact area, can reduce the contact resistance, the current work through Conditions improve.