The utility model discloses a multi-joint
switching power supply
signal line, which belongs to the technical field of power supply
signal lines and comprises an external power supply
signal line, an internal power supply signal line is fixedly arranged in the external power supply signal line, the
tail end of the internal power supply signal line is fixedly connected with a connecting joint, and a protective layer is filled in the external power supply signal line. The
external connection block is fixedly connected to the outer wall of the external power supply signal line, and a limiting plate is arranged in the
external connection block in a sliding mode. The multi-joint
switching power supply signal line is divided into an external power supply signal line and three internal power supply
signal lines, the three internal power supply
signal lines are arranged in the external power supply signal line, and the three internal power supply
signal lines are respectively connected with a connection joint, so that the device can select a corresponding connection joint according to actual needs, and the device is convenient to use. And therefore, the overall use range of the device is expanded, limitation is reduced, daily use of an operator is facilitated, and the good prospect is achieved.