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在计算机和许多电子仪器中使用的印制板插座,72线的分离力约为6公斤;64线的分离力约为9公斤(根据产品说明,实测相似)。有些较大的插板采用2～3个插座,其分离力更要大2～3倍。为了使插板在这样大的分离力下能平稳而轻便的插入或拔出,已有一些仪器或计算机采用一种暂名为“插拔钩”的小零件,附装在插板的两角,利用杠杆作用,把插板插入或拔出。(图1)
Printed board sockets used in computers and many electronic devices have a separation force of approximately 6 kg on 72 lines and a separation force of approximately 9 kilograms on 64 lines (according to product specifications, actual measurements are similar). Some of the larger boards use 2 to 3 sockets, and the separation force is 2 to 3 times larger. In order to make the plugboard smoothly and lightly to be inserted or pulled out under such a large separation force, some instruments or computers have used a small part tentatively named “plugging and unplugging” attached to the two corners of the plugboard. , Use the leverage to insert or pull the card. (figure 1)