电器开关触点铆合设计

Design of Electric Switch Contact Riveting

在欧盟ROHS2.0豁免清单中,含镉银点很大程度取消豁免.而更换银点材料又将面临测试通不过国家标准《家用和类似用途固定式电气装置的开关第1部分:通用要求》的风险.针对上述问题,对银点材料、尺寸及铆接工艺进行设计分析,提出通过优化银点及铜片轴孔间隙、减少杆径比、改良铆接工艺等方面的措施,减少铆接时的变形系数,达到降低接触电阻的目的,从而降低更换银点材料后试验中的温升,达到符合国标的要求.测试数据可为开关插座厂家解决产品测试中的问题提供参考.

In the latest EU ROHS 2.0 exemption list,cadmium-containing silver points are largely canceled,so the replacement of silver point materials faces the risk of failing the national standards in the test(i.e.Switches for Household and Similar Fixed Electrical Installations,Part 1:General Requirements).Through the design and analysis of the silver point material,size and riveting process,this paper proposes to reduce the deformation coefficient during riveting to reduce the contact resistance by optimizing the gap between the silver point and the copper axle hole clearance,reducing the rod diameter ratio,and thus to improve the riveting process.Therefore,the temperature rise in the test is reduced,and the goal of meeting the national standard is achieved.Through these test data,it provides switch socket manufacturers with a suggestion to solve the test problems that appear in the product test.