TWM460950U - Structure of self piercing screw - Google Patents

Description

Self-tapping screw construction

This creation relates to a self-tapping screw structure, in particular to a groove provided between the screw teeth for the accommodation of wood chips, thereby achieving a more convenient operation.

Press, the general screw is used to lock the wooden material. Please refer to the schematic diagram of the use state of the conventional screw. The conventional screw 1 is mainly screwed around the shaft 11 by a plurality of spaced screws. The wooden board 10 is screwed, and the fibers of the wooden board 10 are piled up in the gap between the screws 12 to achieve the effect of locking and positioning the wooden board 10; however, the conventional screw 1 has a locking installation effect, but Since the screw 12 of the screw 1 has a smooth arc shape, when the operator locks the screw 1 to the wooden board 10, the thread 12 is locked during the process, and the thread is not effectively cut off during the advancement process of the thread. The board 10 fibers encountered, but only the board 10 fibers are expanded into cobalt, so that during the locking process, it is susceptible to fiber winding and generates a great resistance. In principle, the operator must apply a large force to complete the lock. In the cooperative industry, at the same time, the increase of the locking force also causes the screw to bear a greater locking torque during the locking process. Therefore, the screw 1 is prone to breakage due to the failure of the locking point, resulting in an increase in construction time. In turn, the locking efficiency is lowered.

In view of this, the creator is adhering to the professional quality and technical concept, and after careful research and improvement, and try to prove that it is feasible, he can first create this creation.

Therefore, the main purpose of this creation is to provide a self-tapping screw structure, which is provided by the groove provided between the screw teeth for the purpose of saving labor.

In order to achieve the above purpose, the technical means used in the creation is to process a spirally inverted trapezoidal groove on the surface of the shaft and the thread.

1‧‧‧ screws

10‧‧‧ plank

11‧‧‧ shaft

12‧‧‧ thread

2‧‧‧ screws

20‧‧‧ shaft

21‧‧‧ thread

22‧‧‧ screw head

23‧‧‧ trench

A‧‧‧Wood material

Figure 1 is a schematic view of the use of conventional screws.

Figure 2 is a perspective view of the creation.

Figure 3 is an enlarged schematic view of I in Figure 2.

Figure 4 is a cross-sectional view of the use of this creation.

Referring to FIG. 2, FIG. 3 and FIG. 4, the present invention provides a self-tapping screw structure, mainly comprising a shaft 20 and a screw member 21 which is intermittently wound around the shaft 20 and the like. Wherein, the top end of the shaft 20 forms a screw top 22, and the shaft 20 is formed with a spirally inverted trapezoidal groove 23 on the space of the thread 21, so that the groove 23 successively forms a strip groove similar to a spiral. The groove 23 has a certain width and depth.

In use, when the wooden material A is locked, the tool is used to extend the screw head 22 at the top end of the screw 2, and the tip of the screw 2 is inserted against the wooden material A, and then the screw 2 is rotated by the tool. The top end of the screw 2 causes the wooden material A to have a cutting effect and a spiral screwing path, and at the same time, the wood chips on the thread 21 are accommodated in the groove 23, thereby avoiding the resistance of the wood chips to the thread 21, and by the rod The spiral groove 23 on the body 20 provides a better chip evacuation function, so that the screw 2 is more labor-saving and quick to achieve the lock. Moreover, the groove 23 of the creation is entangled in the thread 21 It can avoid the accumulation of wood chips, so it will make the lock cooperation industry smoother.

In summary, the self-tapping screw structure of the present invention is designed by the spiral groove, which makes it easier to cut the fiber of the wooden material when it is locked, and can effectively achieve the operation and labor saving, and the synergistic effect of the fastening is quick.

However, the above is only a preferred embodiment of the present invention. When it is not possible to limit the scope of implementation of this creation, that is, the equivalent changes or modifications made by the scope of the patent application and the new description of the creation should still be It is within the scope of this creation patent.

2‧‧‧ screws

20‧‧‧ shaft

21‧‧‧ thread

22‧‧‧ screw head

23‧‧‧ trench

Claims (3)

The utility model relates to a self-tapping screw structure, which mainly has a shaft body and a screw member which is arranged on the rod body with a spacing spiral, and the improvement is that a groove is formed on the surface of the shaft body and the screw thread; The structure can provide the function of accommodating wood chips and convenient locking. For example, in the self-tapping screw structure of claim 1, wherein the groove is provided on the spacing surface of each screw, so that a strip groove similar to a spiral is formed. For example, the self-tapping screw structure of the first application of the patent scope, wherein the groove is in the shape of an inverted trapezoid.