Screw

Abstract

The invention relates to a screw which comprises a rod body, a screw head, a drilling lock part and a plurality of screw teeth, wherein the screw head is arranged on one end of the rod body, the drilling lock part is arranged on the other end of the rod body, and the screw teeth are spirally and annularly arranged on the rod body. The screw is mainly characterized in that two oblique cutting faces are formed on the drilling lock part; a cutting edge is formed at the joint of the two cutting faces; and the screw teeth, which are annularly arranged on the rod body, are extended to the cutting edge and are connected with one end edge of the cutting edge. When locking, the cuttings can smoothly enter cutting discharge channels among the screw teeth via the two oblique cutting faces so as to be discharged rapidly, so that a great deal of cuttings can not accumulate, thereby effectively reducing the locking torsion and increasing the locking speed; and meanwhile, after locking, the screw can sink into a locking object, thereby being beneficial to the subsequent splicing construction of such locking objects.

Description

technical field [0001] The present invention relates to a lock, in particular to a screw. Background technique [0002] refer to figure 1 , the conventional screw 1 includes a rod body 11, a screw head 12 arranged at one end of the rod body 11, a drill lock portion 13 arranged at the other end of the rod body 11, and a plurality of screw threads 14 with spiral rings arranged on the rod body 11 Wherein, the drill lock part 13 is in the shape of a pointed cone, so when the screw 1 locks the lock object 2, the drill lock part 13 drills the lock and guides the thread 14 to continuously screw into the lock Object 2, and then achieve the effect of locking and positioning. [0003] However, after actual use, it has been found that in the process of locking the locking part 2 (such as a composite plate) with the conventional screw 1, although the drill lock part 13 can be drilled and locked for the locking part 2; , due to the conical design of the drill lock part 13, the screw 1...

AI Technical Summary

Problems solved by technology

[0003] However, after actual use, it has been found that in the process of locking the locking part 2 (such as a composite plate) with the conventional screw 1, although the drill lock part 13 can be drilled and locked for the locking part 2; , due to the conical design of the drill lock part 13, the screw 1 can only be pushed into the lock object 2 by the cone-shaped drill lock part 13, so that the screw 1 produced during the drill lock Not only can the chips not be cut off effectively, but they are only pushed outward by the drill lock portion 13, causing the chips to be unable to be discharged smoothly, so that when the screw 1 is subsequently screwed into the lock 2, it is vulnerable to The swarf hinders and increases the locking resistance of the screw 1. At the same time, the screw 1 cannot be smoothly locked into the locking object 2 during the locking process, which affects the progress of the construction work.

[0004] Furthermore, given that the screw 1 is figure 2 When the position shown by the imaginary line is locked, the position of the screw head 12 of the screw 1 is upward after locking, so that the screw head 12 is prone to water accumulation and rust, so in order to avoid this situation In particular, the screw 1 is locked into the lock 2 in an oblique manner. Because the screw 1 is prone to chips that cannot be discharged smoothly, the screw head 12 will protrude from the lock 2 after locking. The occurrence of the situation will affect the subsequent parallel connection of the locking parts 2 and the state of mutual fit. Therefore, the structural design of the screw 1 needs to be improved to solve the above-mentioned lack of use.

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