Retractable lock structure
 It is a retractable lock, which mainly comprises a first pipe section with a lock cylinder at one end thereof, and with a spheric opening and a guide groove at the other end thereof, a connecting rod having a ball shaped part at one end thereof and a ball at the other end thereof so as to pivotally connect with a second pipe section having two spheric openings at both ends thereof respectively a locking rod having a ball end to coupled with one end of the second pipe section, and the other end thereof being coupled into the first pipe; when not use, all the parts of the lock can be retracted into the first pipe section for storage and carrying convenience. 
Y Y E
Y10T Y10T E05B
additional additional inventional
Chao-Jen Teng-Yun
Chou Wang