Screw with low spin lock torque

Abstract

The invention provides a screw with a low spin lock torque. The screw is mainly characterized in that a plurality of cutting screw threads are arranged on a rod body, each cutting screw thread is provided with a plurality of cutting grooves, so that first cutting blades and second cutting blades are formed, meanwhile, opening grooves are concavely formed in the joint positions of the first cuttingblades and the second cutting blades so as to form two tooth peaks, thus, the first and second cutting blades cooperate with the two tooth peaks to facilitate rapid reaming, meanwhile, the whole cutting speed is improved, moreover, fibers of a locking object can be effectively chopped, so that the situation that the locking is prevented from being blocked due to winding of the fibers is avoided,the spin lock torque is greatly reduced, then the cutting grooves are matched with the opening grooves to properly contain and press and pull the part of cuttings, the locking and meshing between thescrew and the locking object is more conducive to improve, and not only is the pulling force effectively increased, but also the stability of the meshing during screwing of the screw is improved.

Description

technical field [0001] The invention relates to a lock, especially a screw with low twisting torque. Background technique [0002] refer to figure 1 , the known screw 1 includes a rod body 11, a screw head 12 arranged at one end of the rod body 11, a locking portion 13 arranged at the other end of the rod body 11 and opposite to the screw head 12, and a plurality of screws arranged on the rod body 11 And the thread 14 that extends toward the locking portion 13; wherein, the locking portion 13 is tapered to form a drill point 131; when in use, the drill point 131 is first pressed against a locking object (not shown in the figure) On the surface of the screw head 12, a rotational torque is applied to drill holes on the lock through the drill tip 131 in a progressive extrusion manner, until the lock part 13 is gradually screwed into the lock Afterwards, these screw teeth 14 are connected to the locking part 13 and then cut the lock object, so as to link the rod body 11 into t...

AI Technical Summary

Problems solved by technology

[0003] However, after actual use, it is found that when the screw 1 is locked on the lock, at the initial stage of locking, the drill tip 131 can only be used to squeeze into the lock until the lock part 13 After entering the lock, these screw teeth 14 can be connected to the lock part 13 to carry out the cutting operation of the lock, but these screw teeth 14 cannot effectively destroy the fibers of the lock, causing the fibers to be easily entangled On the screw 1, the torque of the twist lock is further increased, and at the same time, the chips generated by the subsequent locking are more likely to be hindered by the accumulated f

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