TW201339440A - Screw - Google Patents

Abstract

The present invention discloses a screw, which includes a head portion; a rod body formed on one side of the head portion, in which the end of the rod body has two inclined surfaces and an oblique hinge blade edge is formed at the intersection of the two inclined surfaces; at least one thread formed at the upper plate of the outer surface of the rod body; and a positioning tip portion arranged at the middle section of the hinge blade edge, wherein the positioning tip portion is capable of abutting against the object to be locked, so that the screw is positioned onto the object to be locked to avoid hole-expansion caused by screw deflection during the screwing process. Also, the object to be locked will first be reamed by the hinge blade edge of the rod body, and then subjected to being cut and locked by the thread. This process of reaming first can decrease the quantity of extrusion, reduce the lock resistance, improve locking smoothness, and use less effort, and prevent deformation and crack of the object to be locked.

Description

Screw

The invention relates to a screw, in particular to a screw which can improve the stability of drilling.

The screw includes a head having a locking hole on one side of the head, and a rod body on the other side of the head, the rod body forming a tapered end portion on one side of the opposite head. And a threaded portion is arranged on the outer side of the rod, the screw portion extends spirally from the head to the end portion, and the screw can be used to hold the hand tool during the drilling and locking process, and the hand tool is inserted into the locking hole. Let the operator turn the hand tool and turn the screw to rotate and drill. The end of the screw is received by the lock and gradually locked to lock into the lock.

Wherein, the end of the screw is gradually locked into the object to be locked, and as the outer diameter of the end portion of the lock is gradually increased, the diameter of the hole formed by the drill to be drilled is gradually increased, and the object to be locked is drilled. The material at the hole is gradually pressed laterally by the end of the screw, and the threaded portion is eaten into the extruded material, the locking resistance is large and the object to be locked is cracked or deformed, and the screw locking process It is easy to produce yaw and cause reaming, resulting in poor screw locking stability.

The main object of the present invention is to provide a screw, which is designed to improve the resistance of the existing screw locking process, which is easy to cause the object to be locked to be cracked, and the yaw to cause reaming and the locking stability is not good.

For the purpose of achieving the foregoing, the screw designed by the present invention comprises: a head; a rod body formed on one side of the head, and a second inclined surface at the end of the rod body, the two inclined surfaces intersecting Forming a slanted hinge edge; at least one screw, the screw disk is disposed on an outer side surface of the shaft; and a positioning tip formed at a middle portion of the hinge edge.

According to the above, during the locking of the screw into the object to be locked, the screw first abuts the object to be locked with the positioning tip, and the positioning tip easily extends into the pre-locking hole area of the object to be locked. Positioning the screw on the object to be locked, reducing the deflection of the screw during the locking process, thereby improving the locking stability, and the hinge edge of the rod body is formed by reaming the pre-locking hole area of the lock object. The keyhole and the reaming are then cut and locked by the threaded teeth, and the reaming hole is first formed and the keyhole is formed, which can reduce the amount of material to be squeezed at the keyhole, and facilitate the cutting and locking of the thread, and reduce the locking resistance. Improve the smoothness and labor saving of the lock, and at the same time prevent cracking and deformation of the lock, and reduce unnecessary damage to the lock.

Referring to FIG. 1 to FIG. 3 , a preferred embodiment of the screw of the present invention includes a head 10 , a rod 20 , at least one thread 30 , and a positioning tip 40 .

A locking groove is formed on one side of the head 10, and a tapered surface 11 is formed on the side of the head 10 opposite to the locking groove, and the radially arranged ribs are further disposed on the tapered surface 11. (not shown).

The rod body 20 is formed on the tapered surface 11 of the head portion 10 and extends laterally, and the end of the rod body 20 is provided with two inclined surfaces 21, and the intersection of the two inclined surfaces 21 forms a slanted hinge edge 22, wherein a first end point 23 and a second end point 24 formed by the intersection of the reaming edge 22 and the outer side of the rod body 20, the first end point 23 and the second end point 24 are not on the same horizontal plane, and The angle of inclination of the reaming edge 22 relative to the horizontal plane can be adjusted to an appropriate inclination angle according to requirements. In addition, the angle between the two inclined surfaces 21 can be an acute angle or an obtuse angle, and the angle between the two inclined surfaces is greater than 0 degrees and less than 180 degrees. And the angle between the two inclined faces 21 is also adjusted to an appropriate angle according to requirements.

The screw 30 is disposed on the outer side surface of the rod body 20, wherein the screw can be provided with a thread 30 on the outer side surface of the rod body 20, or a screw thread 30 can be disposed on the second thread 30. The screw can be a spiral tooth and an inverse screw. The two screws 30 have opposite spiral directions. In addition, the screw can form at least one hollow segment 31 on the rod 20, and the screw is provided with an empty segment 31. The empty tooth segment 31 can be located between the parasitic screw and the inverse screw.

The positioning tip 40 is formed at a middle portion of the hinge edge 22, and the positioning tip 40 is a tapered member. The end of the positioning tip 40 can be located on the same level as the first end point 23, or Different on a level surface.

When the screw is locked into the object to be locked, the screw first contacts the object to be locked (for example) by using the positioning tip 40, and the contact end of the positioning tip 40 has a small contact area with the object to be locked, which is favorable for positioning. The tip portion 40 easily extends into the pre-locking hole area of the object to be locked, and the screw is positioned by the positioning tip 40 to the object to be locked, and then the hinge edge 22 of the rod body 20 reams the pre-locking hole area of the lock object. The operation forms a keyhole on the object to be locked, and then the screw 30 is used for cutting and locking, so that the screw is stably locked to the object to be locked.

In summary, the positioning end 40 of the screw can improve the positioning stability of the screw during the locking process, so that the screw does not yaw and cause reaming, thereby improving the locking stability, and the reaming edge 22 is treated first. The lock reaming hole forms a keyhole, and then the screw is cut and locked by the screw 30, which can reduce the amount of material squeezed at the lock hole during the cutting process of the screw 30, can reduce the locking resistance, improve the smoothness and labor saving of the lock. At the same time, it can prevent cracking and deformation of the object to be locked, and reduce unnecessary damage to the object to be locked, which is beneficial to the utilization of the industry.

10. . . head

11. . . tapered surface

20. . . Rod body

twenty one. . . Bevel

twenty two. . . Reaming edge

twenty three. . . First endpoint

twenty four. . . Second endpoint

30. . . Screw

31. . . Empty segment

40. . . Positioning tip

Figure 1 is a perspective view of a preferred embodiment of a screw of the present invention.

Figure 2 is a side plan view showing a preferred embodiment of the screw of the present invention.

Figure 3 is a front plan view showing a preferred embodiment of the screw of the present invention.

Figure 4 is a bottom plan view showing a preferred embodiment of the screw of the present invention.

10. . . head

11. . . tapered surface

20. . . Rod body

twenty one. . . Bevel

twenty two. . . Reaming edge

twenty three. . . First endpoint

twenty four. . . Second endpoint

30. . . Screw

31. . . Empty segment

40. . . Positioning tip

Claims (5)

a screw comprising: a head; a rod formed on one side of the head; and the end of the rod is provided with two inclined surfaces, the intersection of the two inclined surfaces forming a slanted hinge edge; At least one screw, the screw disk is disposed on an outer side surface of the rod body; and a positioning tip is formed at a middle portion of the hinge edge. The screw of claim 1, wherein the intersection of the hinge edge and the outer side of the rod forms a first end point and a second end point, and the first end point is adjacent to the end of the positioning tip. The screw of claim 1 or 2, wherein the positioning tip is a tapered member. The screw of claim 1 or 2, wherein the angle between the two inclined faces is an acute angle. The screw of claim 3, wherein the angle between the two slopes is an acute angle.