Patent ID: 9695855
Date: 2017-07-04
CPC Classifications: A63H,F16B,Y10T

Claim:
1. A building block structure, comprising a joint adaptor unit and at least one connection bar, the joint adaptor unit comprising at least one joint adaptor, the at least one joint adaptor comprising at least one screwing connection end, the at least one screwing connection end comprising a right/left-hand combined threaded hole formed therein, the right/left-hand combined threaded hole being formed by alternate arranging at least one right-handed screw trough and at least one left-handed screw trough, the connection bar having one end that comprises at least one spaced right-handed external thread and an opposite end that comprises at least one spaced left-handed external thread; wherein the joint adaptor unit further comprises at least one right-angled two-end joint adaptor, the at least one right-angled two-end joint adaptor comprising tubular bodies jointed to each other at a right angle, each of the tubular bodies comprising a screwing connection end having a right/left-hand combined threaded hole which comprises at least one right-handed screw trough and at least one left-handed screw trough that are alternately arranged.