Rotating torque transmission buffered shaft

A rotating torque transmission buffered shaft, comprising:

• a casing tub wherein the casing tube is formed with a receiving space, inner walls of both ends of the casing tube are formed with a first inner screw thread and a second inner screw thread respectively;
• and a second spring body and a second ball bearing are connected to each other and installed in the receiving space;
• a shaft tube wherein one end of the shaft tube is installed within the receiving space;
• the middle section of the shaft tube is formed with a screw thread portion corresponding to the first inner screw thread;
• the portion of the shaft tube located inside the receiving space is sleeved with a first ball bearing and a first spring body in sequence and is locked with a mounting member at the end of the shaft tube in order to make the first ball bearing and the first spring body to be fixedly installed between the mounting member and the screw thread portion whereas one end of the mounting member is next to and against the second spring body;
• and
• a lock mounting member wherein the lock mounting member is engaged and locked on the second inner screw thread to make the second spring body and the second ball bearing to be fixedly installed within the receiving space.