Spanner provided with a drive shaft to rotate a workpiece in case of little working space

A spanner comprising:

• a spanner body having a head portion that includes a peripheral wall defining a socket receiving chamber therein, and a handgrip portion extending laterally from said peripheral wall and defining a shaft-receiving chamber that is in spatial communication with said socket receiving chamber;
• a drive shaft disposed rotatably in said shaft-receiving chamber, defining a first axis, and having a coupling end extending into said socket receiving chamber and an operating end opposite to said coupling end;
• a connecting member disposed rotatably in said socket receiving chamber;
• a coupling unit interposed between and connected to said connecting member and said peripheral wall in such a manner to permit synchronous rotation of said connecting member and said spanner body about a second axis which is transverse to said first axis;
• a gear unit disposed within said socket receiving chamber and engaging said connecting member and said drive shaft in such a manner that rotation of said drive shaft about said first axis results in rotation of said connecting member about said second axis relative to said spanner body;
• an annular sleeve sleeved securely on said operating end of said drive shaft, and disposed outwardly of said handgrip portion, said sleeve being formed with an elongated groove that has an end;
• and
• a turning handle pivoted to said sleeve at said end of said elongated groove and turnable relative to said sleeve between a used position, in which said turning handle is disposed outwardly of said elongated groove for rotating said drive shaft about said first axis, and a storage position, in which said turning handle is received in said elongated groove in said sleeve.