TWM632380U - Quick drill tail screw - Google Patents

Abstract

The novel quick-drilling screw comprises a screw head, a rod body extending outward from the screw head, a screw thread with a helical ring arranged on the rod body, and a screw thread provided on the rod body and opposite to the screw A drill tail at one end of the head; wherein, the drill tail has two symmetrical cutting grooves extending from the drill tail to the rod body, and a drill body separated between the two cutting grooves; wherein, the end of each drill body has a Drill tip, an inclined part extending from the drill point to the direction of the rod body, and a support part connecting the inclined part and extending in the direction of the rod body; therefore, the cutting groove is formed through the junction of the inclined part There is a first cutting edge, and a second cutting edge is formed at the junction of the cutting groove and the support part, in addition to the chips generated during the cutting process can be quickly evacuated through the cutting groove, and the support part can also support The support required for cutting can effectively increase the strength of the drill body and ensure the cutting and locking effect.

Description

Quick drill tail screw

The new model relates to a screw, especially a quick-drilling screw.

Referring to FIG. 1 and FIG. 2, the conventional screw 1 includes a screw head 11, a rod body 12 extending outward from the screw head 11, a plurality of screw threads 13 provided on the rod body 12 by a plurality of helical rings, and a A drill tail 14 on the rod body 12 opposite to one end of the screw head 11 , and two cutting grooves 15 extending from the drill tail 13 to the rod body 12 ; wherein the drill tail 14 has a drill tail extending outward from the rod body 12 The drill body 141 has a drill tip 142 at the end of the drill body 141, and a blade edge 143 formed on the drill body 141 and connected to the cutting groove 15; in addition, the two cutting grooves 15 are symmetrical It extends from the drill tip to the rod body 12 ; referring to FIG. 3 , when the screw 1 is locked, after cutting an object 2 , a drill hole 21 and chips are generated on the object 2 , so that the screw 1 It can be continuously locked into the hole 21, and the chips generated by drilling can be directly discharged into the cutting groove 15. Since the cutting groove 15 extends to the rod body 12, the chips can also be discharged smoothly. As the cutting groove 15 is discharged into the screw thread 13, the chips are quickly discharged.

However, after actual use, it is found that the cutting groove 15 is directly extended from the drill tip 142 to the rod body 12, which causes the volume of the drill body 141 to be too thin due to the influence of the cutting groove 15. The support that can be endured is limited, and when the drill body 14 is locked on the hard object 2, the drill body 14 is prone to collapse; Under the design of the body 141, that is, the cutting edge 143 is designed to expand outward from the drill tip 142, the peripheral wall of the drill hole 21 cannot be trimmed, except for causing irregularities in the peripheral wall of the drill hole 21, and at the same time, it is impossible to trim the peripheral wall of the drill hole 21. The generated burrs are trimmed, resulting in a state of protruding burrs on the outside of the hole 21, so that the subsequent screw head 11 is easily affected by the burrs and cannot tightly cover the hole 21, resulting in poor adhesion, which needs to be improved.

Therefore, the purpose of the present invention is to provide a quick-drilling screw, which can achieve rapid chip removal and increase the strength of the cutting support, so as to ensure the cutting and locking effect.

Therefore, the new type of quick-drilling screw includes a screw head, a rod body extending outward from the screw head, a screw thread provided on the rod body with a helical ring, and a screw thread provided on the rod body and opposite to the screw. A drill tail at one end of the head; wherein, the drill tail has two symmetrical cutting grooves extending from the drill tail to the rod body, and a drill body separated between the two cutting grooves; wherein, the end of each drill body has a The drill tip has an inclined portion extending from the drill tip to the direction of the rod body, a support portion connecting the inclined portion and extending towards the rod body, and a first portion is formed at the junction of the cutting groove and the inclined portion. A cutting edge, and a second cutting edge is formed at the junction of the cutting groove and the supporting part; therefore, through the design of the inclined part and the supporting part of the drill body, in addition to maintaining the cutting ability and cutting speed, the cutting groove can Sufficient chip space is provided for the chip to accommodate buffering and chip removal, and the support part can support the support required for cutting, so as to prevent the drill body from being damaged after cutting, thereby ensuring the cutting and locking effect.

The foregoing and other technical contents, features and effects of the present invention will be clearly understood in the following detailed description of the preferred embodiments with reference to the drawings.

Referring to FIGS. 4 and 5 , the first preferred embodiment of the novel quick-drilling screw 3 includes a screw head 31 , a rod body 32 extending from the screw head 31 , a helical ring A screw thread 33 provided on the rod body 32, and a drill tail 34 provided on the rod body 32 and opposite to the end of the screw head 31; wherein, the drill tail 34 has two symmetry extending from the drill tail 34 to the The cutting groove 341 of the rod body 32, and the drill body 342 respectively disposed between the two cutting grooves 341; wherein, the end of each drill body 342 has a drill tip 3421, and one is inclined from the drill tip 3421 to the rod body 32 The inclined portion 3422 extending in the direction is connected to the supporting portion 3423 extending toward the rod body 32. The inclined portion 3422 and the supporting portion 3423 are designed at different angles, so that the thickness of the supporting portion 3423 is thinner. In addition, a first blade 3424 is formed where the cutting groove 341 meets the inclined portion 3422, and a second blade 3425 is formed at the connection between the cutting groove 341 and the supporting portion 3423. The drill tips 3421 at the ends of the two drill bodies 342 are at the same position, and the cutting groove 341 extends from the drill tip 3421 in an arc shape toward the rod body 32 as an example.

Referring to FIG. 4 and FIG. 6 , when the present embodiment is used, the tether is provided on an object 4 . After the drill tip 3421 is in contact with the surface of the object 4 , the screw head 31 applies a pressure and twisting force to pass through the screw head 31 . After the first blade 3424 gradually cuts the surface of the object 4, a locking hole 41 is formed on the surface of the object 4. The first blade 3424 continues to cut the object 4, so that the quick drill screw 3 Continue to penetrate into the object 4, and the second blade 3425 can cut the locking hole 41 again, so through the design of the first blade 3424 and the second blade 3425, the quick-drilling screw can be added 3. The sharpness of the overall cutting, and the chips (arrows in the figure) generated in the process of cutting the object 4 can be directly discharged into the cutting groove 341, and the cutting groove 341 can provide a large space for the chips to discharge When the quick-drilling screw 3 is continuously locked into the generated chips, the chips in the cutting groove 341 can be directly discharged along the screw teeth 33, and the inclined portion 3422 can provide the The quick-drilling screw 3 has a quick penetration effect, and the design of the supporting portion 3423 can provide the supporting capability of the second blade 3425, so that the second blade 3425 can have better supporting force and The strength can prevent the second blade 3425 from being damaged due to insufficient supporting force due to over-locking, which can effectively prevent the drill body 342 from being damaged because the object 4 is too hard, and ensure the cutting and locking effect.

Referring to FIGS. 7 and 8 , the second preferred embodiment of the present invention, the quick drill bit screw 3 still includes a screw head 31 , a rod body 32 , a screw thread 33 and a drill bit 34 and other structures, and the aforementioned components The effect to be achieved is the same as that of the first embodiment, and will not be described in detail. In particular, in this embodiment, the drill tips 3421 at the ends of the two drill bodies 342 are not at the same position, so that a drill is formed between the two drill tips 3421. The cutting edge 343 and the cutting groove 341 extend from the drill point 3421 to the rod body 32 in a straight line; therefore, the cutting groove 341 extends from the drill point 3421 to the rod body 32 in a straight line, which also It can provide the accommodating space for chips during the locking process, so that the effect of chip removal and chip holding is increased, and through the design of the drill cutting edge 343, when the quick drill bit screw 3 is in contact with the object 4, the drill cutting edge 343 can be used. Providing a larger contact area with the object 4 can avoid the deflection of the quick-drilling screw 3 in the process of colliding with the object 4 , and improve the initial locking effect and the stability of the locking process.

Referring to FIGS. 9 and 10 , the third preferred embodiment of the present invention, the quick-drilling screw 3 still includes structures such as a screw head 31 , a rod body 32 , a screw thread 33 and a drill tail 34 . The functions are the same as those of the first embodiment, and will not be described in detail. In particular, in this embodiment, each cutting groove 341 has a first surface 3411 connected to the first blade edge 3424 and the second blade edge 3425. and a second surface 3412 disposed between the drill body 342 and the first surface 3411, and the first surface 3411 has a concave arc design; therefore, the first surface 3411 passing through the cutting groove 341 is a concave arc The design can enable the first surface 3411 to accommodate more chips, so that the chip removal effect of the cutting groove 341 is better. Relatively, the first blade 3424 and the second blade 3425 can be made sharper, so that the cutting effect is better.

Summarizing the foregoing, the quick drill bit screw of the present invention has two symmetrical cutting grooves extending from the drill tail to the rod body in the drill tail, and a drill body separately disposed between the two cutting grooves; wherein, each drill The end of the body has a drill point, an inclined part extending from the drill point to the direction of the rod body, and a support part connecting the inclined part and extending to the direction of the rod body; therefore, through the cutting groove and the inclined part A first blade is formed at the junction and a second blade is formed at the connection between the cutting groove and the support part, so that the chips generated during the cutting process can be quickly removed through the cutting groove, and at the same time, the support part can also support cutting The required support can effectively increase the strength of the drill body, and can effectively avoid the damage of the drill body during the cutting process, so that the quick drill tail screw can cope with locking on a material with a higher hardness, and can also achieve the required performance. Cutting lock effect.

However, the above descriptions are merely to illustrate the preferred embodiments of the present invention, and should not limit the scope of implementation of the present invention, that is, simple equivalent changes and modifications made in accordance with the scope of the patent application for this new model and the contents of the description of the new model. , shall still fall within the scope of this new patent.

[acquaintance] 1: Screw 11: screw head 12: Rod body 13: Thread 14: Drill tail 15: Cutting groove 141: Drill body 142: Drill Tip 143: Blade 2: Object 21: Drilling [creation] 3: Quick drill tail screw 31: screw head 32: Rod body 33: Thread 34: Drill tail 341: Cutting groove 342: Drill Body 343: Drill cutting edge 3411: first side 3412: Second side 3421: Drill Tip 3422: Slope 3423: Support Department 3424: The First Blade 3425: Second Blade 4: Objects 41: Locking hole

FIG. 1 is a schematic diagram of a conventional screw. FIG. 2 is a schematic plan view of a conventional screw. FIG. 3 is a schematic diagram of the use state of a conventional screw. FIG. 4 is a perspective view of the first preferred embodiment of the present embodiment. FIG. 5 is a schematic plan view of the first preferred embodiment of the present embodiment FIG. 6 is a schematic diagram of the use state of the first preferred embodiment of this embodiment. FIG. 7 is a perspective view of the second preferred embodiment of the present embodiment. FIG. 8 is a schematic plan view of the second preferred embodiment of the present embodiment. FIG. 9 is a perspective view of the third preferred embodiment of the present embodiment. FIG. 10 is a cross-sectional view of A to A in FIG. 9 .

3: Quick drill tail screw

31: screw head

32: Rod body

33: Thread

34: Drill tail

341: Cutting groove

342: Drill Body

3421: Drill Tip

3422: Slope

3423: Support Department

3424: The First Blade

3425: Second Blade

Claims (6)

A quick-drilling screw, which comprises a screw head, a rod body extending outward from the screw head, a screw thread with a helical ring arranged on the rod body, and a screw head provided on the rod body and opposite to the screw head A drill tail at one end is characterized in that: the drill tail has two symmetrical cutting grooves extending from the drill tail to the rod body, and a drill body separately arranged between the two cutting grooves; wherein, the end of each drill body has a drill point, an inclined part extending from the drill point to the direction of the rod body, a support part connected to the inclined part and extending in the direction of the rod body, and the connection between the cutting groove and the inclined part is formed with a The first blade edge, and the second blade edge is formed at the connection between the cutting groove and the support part. The quick-drilling screw according to claim 1, wherein the drill tips at the ends of the two drill bodies are at the same position. The quick-drilling screw according to claim 1, wherein the drill tips at the ends of the two drill bodies are not at the same position, so that a drill cutting edge is formed between the two drill tips. The quick-drilling screw according to claim 1, wherein the cutting groove extends from the drill point toward the rod body in an arc shape. The quick-drilling screw according to claim 1, wherein the cutting groove extends from the drill point toward the rod body in a straight line. The quick-drilling screw according to claim 1, wherein each cutting groove has a first surface that is in contact with the first blade edge and the second blade edge, and A second surface is arranged between the drill body and the first surface, and the first surface is in the shape of a concave arc.

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