A frame, bracket, or box for holding or protecting a mechanical part.
框架，托架，盒子：承载或保护一机械部分的框架、托架或盒子。
2
The plug and the socket can be disposed inside the box, thus protecting the connection part of the starting motor and increasing safety.
本实用新型可将插头、插座置于盒内，保护启动电机连接部位，增强安全性能。
3
When the linear length of the protecting pipe is over 30m, the junction box should be added; and when there are more than 2 right-angle bends, junction box should be added between them.