CN206918005U - Self-tapping screw - Google Patents

Abstract

A self-tapping screw includes a head, a threaded portion, and a drill blade. One end of the threaded portion is connected to the head. The drill blade is connected to the other end of the threaded portion and has two threads. The chip removal groove and the two protruding ribs are arranged in a staggered manner. Therefore, the self-tapping screw of the present invention can increase the structural strength of the drill blade through the arrangement of the protruding ribs, so that the drill blade can withstand the impact of instantaneous high torque without being easily damaged.

Description

Self-tapping screws

technical field

The utility model relates to screws, in particular to a self-tapping screw capable of improving structural strength.

Background technique

The so-called self-tapping screw mainly cuts the object continuously during the process of locking it on the object, so that the object produces an internal thread hole until the locking is completed, so as to save the time and cost of making the internal thread hole on the object in advance.

With the advent of the era of automation, most users will use power sources (such as electric screwdrivers or robotic arms) to replace traditional hand tools (such as screwdrivers) to lock self-tapping screws in order to save time and effort. However, the instantaneous high torque generated by the power source can easily break the drill edge of the self-tapping screw at the end. Therefore, the traditional self-tapping screw has a problem of insufficient strength in structure and needs to be improved.

Utility model content

The main purpose of the utility model is to provide a self-tapping screw, which has better structural strength and can withstand instantaneous high-strength impact loads.

In order to achieve the above object, the self-tapping screw of the present invention includes a head, a threaded body, and a drill portion, wherein one end of the threaded body is connected to the head, and the drilled portion is connected to the threaded body The other end of the portion has two chip flutes and at least two convex ribs, and the two chip flutes and the two convex ribs are arranged in a staggered manner. Therefore, the self-tapping screw of the present invention can provide the effect of increasing the structural strength of the drill edge by using the rib, so that the drill edge can withstand the impact of instantaneous high torque without being easily damaged.

Wherein the two opposite outer peripheral surfaces of the drill portion respectively have a plurality of convex ribs, and the plurality of convex ribs are arranged at intervals along the axial direction of the self-tapping screw.

One ends of the two chip flutes are located at the junction of the thread body and the drill edge, and the other ends of the two chip flutes intersect at a tip of the drill edge.

Each of the protruding ribs has a handedness extending along the outer peripheral surface of the drill portion.

The beneficial effect of the utility model is that it has better structural strength and can withstand instantaneous high-intensity impact loads.

The detailed structure, features, assembly or usage of the white tapping screw provided by the utility model will be described in the subsequent detailed description of the implementation. However, those with ordinary knowledge in the field of the utility model should be able to understand that the detailed description and the specific embodiments enumerated for implementing the utility model are only used to illustrate the utility model, and Asia and Africa are used to limit the scope of the utility model Scope of patent application.

Description of drawings

In order to further illustrate the technical content of the present utility model, below in conjunction with embodiment and accompanying drawing, describe in detail as follows, wherein:

Fig. 1 is a perspective view of the appearance of the self-tapping screw of the present invention.

Fig. 2 reveals the side view of the self-tapping screw of the present utility model.

Fig. 3 is an end view of the self-tapping screw of the present invention.

detailed description

Please refer to FIGS. 1 to 3 . The self-tapping screw 10 of the present invention includes a head 12 , a threaded body 14 , and a drill 16 . One end of the threaded body 14 is connected to the head 12, and the other end of the threaded body 14 is connected to the drilled edge 16, wherein two opposite peripheral surfaces of the drilled edge 16 have three convex ribs 18 respectively, and the other two opposite sides of the drilled edge 16 are Each has a chip removal groove 20, the chip removal groove 20 and the convex rib 18 are arranged in a staggered manner, and the three convex ribs 18 located on the same outer peripheral surface are arranged at equal intervals along the axial direction of the self-tapping screw 10, and the two chip removal grooves 20 respectively extend from the junction of the thread body 14 and the drill edge 16 to the drill edge 16 along the direction of rotation of the self-tapping screw 10, and jointly intersect at the tip of the drill edge 16 for drilling on the drill edge 16. Provides chip evacuation while drilling. Each convex rib 18 has a rotation direction extending along the outer peripheral surface of the drill portion 16 , and the rotation direction can be elastically changed according to different application fields.

The self-tapping screw provided by the utility model is mainly used in robot automatic assembly engineering. Since the robot automatic assembly project must position the self-tapping screw at the place to be assembled in a high-speed and single-time multi-quantity manner, when the self-tapping screw is pressed by high pressure and In the fast setting and positioning process, the drill part 16 will bear the brunt of the maximum impact load, and the structural strength of the drill part 16 can be increased by using the convex ribs 18, so that the drill part 16 can withstand the instantaneous high-strength impact without causing structural problems. The damage of making and reaching the purpose of the utility model.

Claims (4)

1. A self-tapping screw, characterized in that it comprises: A head, a thread body, and a drill edge, one end of the thread body is connected to the head, the drill edge is connected to the other end of the thread body and has two flutes and at least two convex ribs , the two flutes and the two convex ribs are in a staggered arrangement. 2. The self-tapping screw according to claim 1, wherein the two opposite outer peripheral surfaces of the drill portion respectively have a plurality of ribs, and the plurality of ribs are spaced along the axial direction of the self-tapping screw arrangement. 3. The self-tapping screw according to claim 1, wherein one end of the two chip flutes is respectively located at the junction of the thread body and the drill edge, and the other ends of the two chip flutes intersect together at a tip of the drill portion. 4. The self-tapping screw according to claim 1, wherein each of the protruding ribs has a handedness extending along the outer peripheral surface of the drill portion.