Patent attributes
A coupling structure of a cable connector includes a first connection head and a second connection head. The first connection head includes a first joint part, multiple insertion terminals, and an external threaded portion disposed on the first joint part. The second connection head includes a second joint part, multiple insertion holes, a fastening sleeve, a socket formed between the fastening sleeve and the second joint part, a positioning ring receiving the fastening sleeve, a plurality of fastening elements arranged between the positioning ring and the fastening sleeve, and a quick-release fastening ring. The quick-release fastening ring rotatably presses on the fastening elements. An internal threaded portion of each fastening element is engaged with the external threaded portion. Therefore, the first connection head and the second connection head can be securely fastened to each other and can be quickly detached from each other.