TWI785272B

• Main Author: SHI, YI-JIE
• Format: Patent
• Language: Chinese
• Published: 01.12.2022
• Subjects: BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The present invention provides a wood screw structure, which includes a screw head section, a rod body section, a first thread, and a plurality of crushing rib units. The rod body section is integrally formed by the screw head section in sequence so as to include a first shaft portion, a second shaft portion and a third shaft portion connected with a neck portion, and a tapered cone portion extending and tapering outwardly from the third shaft portion. The first thread is spirally projected on an outer peripheral surface of the tapered cone portion, the second shaft portion and the third shaft portion. The crushing rib units are spirally and circularly projected on the outer peripheral surface of the third shaft portion and the tapered cone portion, and include a plurality of crushed blocks projected on a rib body. A first chip discharge port is formed among the crushed blocks. As a result, the first chip discharge port may crush and quickly discharge chips, thereby uniformly releasing the pressure between th