What are the precautions for selecting materials in mechanical timer socket

In the design and manufacturing process of mechanical timing sockets, the selection of housing materials is crucial. As the first protective barrier of the socket, the shell must not only have excellent insulation performance to prevent users from encountering the risk of electric shock during use, but also have certain strength and wear resistance to resist collisions and frictions in daily use. . Commonly used shell materials include flame retardant polycarbonate (PC) engineering plastics, acrylonitrile-butadiene-styrene (ABS) plastics and metal alloys. Among them, flame-retardant PC engineering plastics have become the preferred material for mechanical timing socket housings due to their excellent insulation performance, heat resistance and flame retardant properties. Relatively speaking, ABS plastics are widely used in some low-end mechanical timing sockets with their good processing performance and relatively low cost. Although metal alloys perform excellent in strength and wear resistance, their strong conductivity requires additional insulation treatment when used, so they need to be carefully considered when choosing.

The choice of conductive material is equally critical inside the mechanical timing socket. Internal conductive components such as copper sheet plugs and contacts must have excellent conductivity and plug-and-resistance to ensure stable current transmission and long-term reliable use of the socket. As a metal with excellent conductivity, copper is usually regarded as the preferred material for conductive components inside mechanical timing sockets. However, pure copper has low hardness and wear resistance, and is prone to deformation or wear during frequent insertion and removal. Therefore, in practical applications, copper alloys or copper plating materials are usually used to improve the hardness and wear resistance of conductive components. In addition, in order to ensure the insulation performance between the conductive component and the socket housing, the surface of the conductive component needs to be insulated, such as spraying insulating paint or covering insulating film.

The timing mechanism is the core component of a mechanical timing socket, and its material selection directly affects the timing accuracy and service life of the socket. Common timing mechanism materials include metal gears, plastic gears and cam mechanisms. Although metal gears have high strength and wear resistance, they are costly and difficult to process; plastic gears are widely used for their low cost and easy to process properties, but they are relatively more wear resistance and strength. Weak; the cam mechanism realizes timing function with its unique structure, and has the advantages of simple structure and easy manufacturing. When choosing timing mechanism materials, you need to comprehensively consider the timing accuracy, service life and cost of the socket.

In addition, the waterproof and dustproof performance of mechanical timing sockets are also important considerations when selecting materials. In mechanical timing sockets that need to be used outdoors or in humid environments, materials with waterproof and dustproof functions need to be selected, such as waterproof seals and dustproof covers. These materials can effectively prevent moisture and dust from entering the interior of the socket and reduce the risk of short circuits and leakage due to moisture or contamination.