This utility model discloses a side-
insertion pin header connector, relating to the field of pin header connector technology. It includes a body with a protective mechanism and symmetrically arranged reinforcing mechanisms on its left and right sides. The protective mechanism includes a hollow rod, with a telescopic rod fixedly connected to the inner wall of the hollow rod. When the hollow rod is inserted from the tip of the connecting pin, it is positioned between two sets of rubber pads. Pulling the hollow rod downwards compresses a first spring, simultaneously pushing the telescopic rod, causing it to shorten. When the hollow rod is at the
tail end of the connecting pin and is stationary, the two ends of the first spring push the hollow rod and the arc-shaped plate outwards, while the telescopic rod supports the arc-shaped plate, improving the tightness of the fit between the rubber pads and the connecting pin, thereby increasing the support strength for the connecting pin and preventing it from tilting during use, thus extending the service life of the side-
insertion pin header connector.