1. Rotatability : It can rotate around a specific axis, allowing for a certain degree of angle change and relative motion between two connected components, increasing the flexibility of the connection.
2. Connection fastening: While achieving the rotation function, it can ensure the firmness of the connection. Through reasonable structural design and fastening methods, the two components maintain a stable connection during rotation and are not easily detached
3. Compact structure: Generally designed to be compact and take up less space, while achieving the function of rotating connection, it will not bring too much size and weight increase to the overall structure, which is conducive to the miniaturization and lightweight design of the equipment