Wooden screw with circumferentially-distributed reverse four-edge thorns

A wood screw with reverse four-edge thorns distributed circumferentially belongs to fastener nails, mainly comprises a screw head, a screw rod, a ring with four-edge thorns distributed circumferentially, a threaded section and a screw point, and is characterized in that the ring with four-edge thorns distributed circumferentially is arranged in the middle of the screw rod and is formed by arraying the reverse four-edge thorns circumferentially. The reverse four-edge thorns on the four-edge thorn ring circumferentially arranged in the middle of the screw rod are utilized to pierce a wood component, so that the problem of part connection looseness caused by vibration load, especially outward load during vibration, is effectively prevented. Meanwhile, the wood screw is simple in structure, novel in design and reliable in performance. 周布反向四棱刺木螺钉属于紧固件钉类，其主要包括螺钉头部、螺钉杆、周布四棱刺环、螺纹段及钉尖，其特征在于螺钉杆中部设置的周布四棱刺环由反向四棱刺周向阵列而成。本发明创造通过利用其螺钉杆中部设置的周布四棱刺环上的反向四棱刺刺入木材构件，有效防止其因振动载荷而出现零件连接松动现象的问题，特别是振动时的外向载荷。同时，该木螺钉结构简单，设计新颖，性能可靠。