The structure of the pogo pin waterproof connector
The structure of the waterproof connector is usually divided into metal contact conductors and shell metal. Metal and plastic (nylon TA66) housings have the following differences:
1. Mechanical life
The mechanical life of a waterproof connector refers to the life of the number of times of plugging and unplugging, and the industry-standard generally stipulates that it is 500 to 1000 times. When the specified mechanical life is reached, the contact resistance, insulation resistance, and withstand voltage of the waterproof connector cannot exceed the specified standard values. This is not a big difference between the metal shell and the plastic shell.
2. Electrical performance
The rated voltage, rated current, contact resistance, insulation resistance, etc. are based on the specified standard values. This is the same as the metal and plastic case.
3. Environmental parameters
Environmental parameters mainly include ambient temperature, humidity, sudden temperature changes, atmospheric pressure, and corrosive environment. The environment in which the waterproof connector is used, stored, and transported has a significant impact on its performance. Therefore, the corresponding metal shell must be used in accordance with the actual environmental conditions to be better than plastic.
4. Termination method
Termination method refers to the connection method of the metal contacts of the male and female connectors of the waterproof connector and the wire and cable. The metal case is the same as the plastic case. There are welding, crimping, winding, piercing, and screws.
Comprehensive analysis, in addition to the shielding function of the connector, the performance difference between metal and nylon TA66 plastic shells is not large. Compared with the metal shell, the cost of plastic is lower, and the structure is more reasonable.