TWI705201B

TWI705201B - Drilling torque-reducing screw

Info

Publication number: TWI705201B
Application number: TW107131132A
Authority: TW
Inventors: 蘇國材; 蘇振榮
Original assignee: 慶達科技股份有限公司
Priority date: 2018-09-05
Filing date: 2018-09-05
Publication date: 2020-09-21
Also published as: TW202010950A

Abstract

Drilling torque-reducing screw is characterized in that a shank is provided with a plurality of cutting threads, each of which has a plurality of slots formed thereon to provide a plurality of first cutting edges and second cutting edges. Meanwhile, a groove is recessed at a connection of the first cutting edge and the second cutting edge to provide two crests. Hence, the first and second cutting edges cooperate with the crests, thereby assisting in reaming quickly, increasing the whole cutting speed, breaking fibers of an object effectively, preventing the fibers from entangling around the screw, preventing the screwing operation from being hindered caused by the entanglement of the fibers, and reducing the drilling torque greatly. Further, the slots and grooves can accommodate debris properly, thereby attaining a tight engagement between the screw and the object, increasing the pulling capacity effectively, and enhancing the engaging stability of the screw.

Description

具低旋鎖扭力之螺絲Screw with low twist lock torque

本發明是有關於一種鎖合件，特別是一種具低旋鎖扭力之螺絲。The present invention relates to a locking element, especially a screw with low twisting torque.

參閱圖1，習知螺絲1包含有一桿體11，一設於該桿體11一端之螺頭12，一設於該桿體11另一端且相反於該螺頭12之鎖合部13，以及複數設於該桿體11並朝該鎖合部13延伸之螺牙14；其中，該鎖合部13漸縮形成一鑽尖131；使用時，首先將該鑽尖131抵壓於一鎖合物（圖中未示）之表面上，並於該螺頭12施予一旋轉扭力，以透過該鑽尖131以漸進擠壓方式於該鎖合物上進行鑽孔，待該鎖合部13逐漸螺入該鎖合物後，該等螺牙14接續該鎖合部13進而針對該鎖合物進行切削，藉以連動該桿體11隨著該等螺牙14的切削而進入該鎖合物內，進而完成該螺絲1之鎖合作業。1, the conventional screw 1 includes a rod body 11, a screw head 12 provided at one end of the rod body 11, a locking portion 13 provided at the other end of the rod body 11 and opposite to the screw head 12, and A plurality of threads 14 arranged on the rod body 11 and extending toward the locking portion 13; wherein the locking portion 13 is gradually reduced to form a drill point 131; in use, the drill point 131 is first pressed against a lock On the surface of the object (not shown in the figure), and apply a rotating torsion to the screw head 12 to drill a hole on the lock compound through the drill point 131 in a progressive squeeze manner, and wait for the lock portion 13 After gradually screwing into the lock, the threads 14 continue with the lock portion 13 and then cut the lock, thereby linking the rod 11 to enter the lock with the cutting of the threads 14 , Then complete the screw 1 lock cooperation industry.

然，實際使用後發現，該螺絲1於該鎖合物上進行鎖設時，其鎖合初期僅能利用該鑽尖131以擠壓的方式進入該鎖合物內，直到該鎖合部13進入該鎖合物後，該等螺牙14才能接續該鎖合部13進行該鎖合物之切削作業，惟，該等螺牙14無法有效破壞該鎖合物之纖維，致使該纖維易纏繞於該螺絲1上，更加導致旋鎖扭力提高，同時後續鎖合所產生的切屑更可能受該積存之纖維阻礙而無法及時向外排出，致使該螺絲1無法繼續向內旋入，更是增加鎖合的困難度，此時若該螺絲1持續向下鑽鎖該鎖合物，更可能導致該螺絲1發生損壞、鈍化或斷裂之情況，亦或造成該鎖合物裂材之情事產生，再者，該螺絲1無法有效與該鎖合物咬合，致使該螺絲1容易產生鬆動之現象，當該螺絲1受外力拉扯或震動時，極容易造成該螺絲1產生鬆動、搖晃或脫落的情況，進而導致該螺絲1鎖合效果不彰，實有待改善。However, after actual use, it is found that when the screw 1 is locked on the lock, the drill point 131 can only be used to enter the lock in the initial locking stage until the lock 13 After entering the lock compound, the threads 14 can continue the lock portion 13 to perform the cutting operation of the lock compound. However, the threads 14 cannot effectively damage the fibers of the lock compound, making the fibers easy to entangle. On the screw 1, the torque of the screw lock is increased. At the same time, the chips generated by the subsequent locking are more likely to be blocked by the accumulated fibers and cannot be discharged out in time. As a result, the screw 1 cannot continue to be screwed in. The difficulty of locking. At this time, if the screw 1 continues to drill down to lock the lock, it is more likely to cause damage, dullness or breakage of the screw 1, or cause the lock to crack. Furthermore, the screw 1 cannot effectively engage with the lock compound, so that the screw 1 is prone to loosening. When the screw 1 is pulled or shaken by an external force, it is very easy to cause the screw 1 to loosen, shake or fall off. Therefore, the locking effect of the screw 1 is not obvious, which needs to be improved.

因此，本發明之目的，是在提供一種具低旋鎖扭力之螺絲，其可有效斬切鎖合物纖維，有助於降低旋鎖扭力與提升切削速度，同時快速排屑，並於鎖合後達到較佳的咬合穩定度。Therefore, the object of the present invention is to provide a screw with low twist and lock torque, which can effectively cut the fibers of the lock compound, helps to reduce the twist and lock torque and increase the cutting speed, and at the same time, to quickly remove chips, and to lock Then achieve better bite stability.

於是，本發明具低旋鎖扭力之螺絲，其包含有一桿體，分別設於該桿體兩端之螺頭及鎖合部，以及複數設於該桿體上之切削螺牙；其中，該每一切削螺牙包含有分別由該桿體向外延伸之上牙面及下牙面，以及複數開設於該上牙面與該下牙面相接處之切槽及開槽，而該每一切槽具有複數第一切刃，複數與該等第一切刃相接之第二切刃，以及形成於該第一切刃與該第二切刃相接處之牙底，另該每一開槽兩端分別形成有上牙峰及下牙峰；是以，該等第一切刃及第二切刃配合該等上牙峰及下牙峰得以於鎖合初期快速進行擴孔，同時有效斬切鎖合物之纖維，以利輔助該螺絲旋鎖進入，不僅有效提升切削速度，同時避免該纖維纏繞於該桿體之情事產生，更加大幅降低旋鎖扭力，另，鎖合時所產生的切屑可沿著該等切削螺牙向外排出，更達快速排屑，以及避免該切屑過度積存而導致該鎖合物裂材之情事產生，再者，該等切槽及開槽不僅可供來不及排出之切屑容納，同時部分切屑於鎖合後積存於該等切槽及該等開槽處，更加有助於提升該螺絲與該鎖合物間之穩固咬合，不僅有效增加拉拔力外，更提高該螺絲旋入之咬合穩定度。Therefore, the screw with low twist and lock torque of the present invention includes a rod body, a screw head and a locking part respectively provided at both ends of the rod body, and a plurality of cutting threads provided on the rod body; wherein, the Each cutting thread includes an upper tooth surface and a lower tooth surface extending outward from the rod body, and a plurality of notches and grooves at the junction of the upper tooth surface and the lower tooth surface, and each The groove has a plurality of first cutting edges, a plurality of second cutting edges connected to the first cutting edges, and the bottom of the tooth formed at the junction of the first cutting edge and the second cutting edge. Both ends of the slot are respectively formed with upper and lower ridges; therefore, the first cutting edge and the second cutting edge cooperate with the upper and lower ridges to rapidly expand the hole in the initial stage of locking, and at the same time The fiber of the lock compound is effectively cut to facilitate the entry of the screw lock, which not only effectively increases the cutting speed, but also avoids the occurrence of the fiber being entangled in the rod body, and greatly reduces the twisting force of the lock. The generated chips can be discharged along the cutting screws to achieve rapid chip removal, and to avoid excessive accumulation of the chips and cause the cracking of the lock compound. Moreover, the cutting and grooving are not only It can accommodate the chips that are too late to be discharged. At the same time, some chips are accumulated in the grooves and the grooves after the locking, which is more helpful to improve the firm engagement between the screw and the locking compound, and not only effectively increases the drawing Outside the force, the occlusal stability of the screw is improved.

有關本發明之前述及其他技術內容、特點與功效，在以下配合參考圖式之較佳實施例的詳細說明中，將可清楚的明白。The foregoing and other technical content, features, and effects of the present invention will be clearly understood in the following detailed description of the preferred embodiment with reference to the drawings.

參閱圖2所示，本發明之一較佳實施例，該具低旋鎖扭力之螺絲3包含有一桿體31，一設於該桿體31一端之螺頭32，一設於該桿體31另一端且相反於該螺頭32之鎖合部33，以及複數設於該桿體31上且朝該鎖合部33延伸之切削螺牙34；其中，該鎖合部33漸縮形成一鑽尖331，且該鎖合部33漸縮交會於該鑽尖331後向外延伸形成之角度A1較佳為22~26度設置為之，而本實施例中，該桿體31上另設有複數輔助螺牙35，且該等輔助螺牙35呈完全牙型態設置，前述該等輔助螺牙35較佳為設置於鄰近該螺頭32處為之，而該等切削螺牙34係呈波浪狀態樣設置，即如圖4所示，且該等切削螺牙34較佳為設置於鄰近該鎖合部33處為之，另該等切削螺牙34之外徑34d小於該等輔助螺牙35之外徑35d。 Referring to FIG. 2, a preferred embodiment of the present invention, the screw 3 with low twist lock includes a rod 31, a screw head 32 provided at one end of the rod 31, and a screw head 32 provided at the rod 31 The other end is opposite to the locking portion 33 of the screw head 32, and a plurality of cutting threads 34 arranged on the rod 31 and extending toward the locking portion 33; wherein the locking portion 33 is gradually reduced to form a drill Point 331, and the locking portion 33 is tapered and meets after the drill point 331. The angle A1 formed by extending outward is preferably 22~26 degrees. In this embodiment, the rod 31 is additionally provided A plurality of auxiliary threads 35, and the auxiliary threads 35 are arranged in a complete tooth form, the aforementioned auxiliary threads 35 are preferably arranged adjacent to the screw head 32, and the cutting threads 34 are arranged It is arranged in a wavy state, as shown in FIG. 4, and the cutting threads 34 are preferably arranged adjacent to the locking portion 33, and the outer diameter 34d of the cutting threads 34 is smaller than that of the auxiliary threads. The outer diameter of the tooth 35 is 35d.

參閱圖2及圖3，該每一切削螺牙34包含有一由該桿體31向下延伸之上牙面341，一由該桿體31向上延伸之下牙面342，複數開設於該上牙面341與該下牙面342相接處之切槽343，以及複數凹設於該上牙面341與該下牙面342相接處之開槽344，且該開槽344中心水平向外延伸定義一基準線R1，而本實施例中，該上牙面341向外延伸與該基準線R1交會形成之傾斜角度A2與該下牙面342向外延伸與該基準線R1交會形成之傾斜角度A3不同，該傾斜角度A2較佳為10度為之，而該傾斜角度A3較佳為30度為之。 2 and 3, each of the cutting threads 34 includes an upper tooth surface 341 extending downward from the rod body 31, a lower tooth surface 342 extending upward from the rod body 31, and a plurality of the upper teeth The groove 343 where the surface 341 meets the lower tooth surface 342, and a plurality of grooves 344 recessed at the joint of the upper tooth surface 341 and the lower tooth surface 342, and the center of the groove 344 extends horizontally outward A reference line R1 is defined. In this embodiment, the inclination angle A2 formed by the extension of the upper tooth surface 341 intersecting the reference line R1 and the inclination angle formed by the extension of the lower tooth surface 342 intersecting the reference line R1 A3 is different, the inclination angle A2 is preferably 10 degrees, and the inclination angle A3 is preferably 30 degrees.

參閱圖3及圖4，該每一切槽343具有複數分別與該上牙面341、該下牙面342相交之第一切刃3431，複數與該等第一切刃3431相接之第二切刃3432，以及形成於該第一切刃3431與該第二切刃3432相接處之牙底3433，配合參閱圖5，該第一切刃3431向外延伸與該第二切刃3432向外延伸所交會之相交點向外延伸定義一中心線R2，而前述該第一切刃3431與該中心線R2交會形成之傾斜角度A4與該第二切刃3432與該中心線R2交會形成之傾斜角度A5呈不同設置，該傾斜角度A4較佳為60度，而該傾斜角度A5較佳為30度，另該每一開槽344開設於該上牙面341與該下牙面342相接處並位於不同於該等切槽343所在位置，即該上牙面341與該下牙面342分別相交於該開槽344兩端，以分別形成有延伸於一切槽343的第一切刃3431至另一相鄰切槽343的第二切刃3432之間之上牙峰3411及下牙峰3421，以供該每一開槽344開設於任二相鄰切槽343之間，使該等切槽343與該等開槽344呈相互交錯配置，且該等第一切刃3431、第二切刃3432不同於該等上牙峰3411、下牙峰3421，同時該上牙面341由該桿體31向外延伸並延伸至該等上牙峰3411之延伸距離彼此相同，該下牙面342由該桿體31向外延伸並延伸至該等下牙峰3421之延伸距離彼此相同。 Referring to Figures 3 and 4, each cut 343 has a plurality of first cut edges 3431 intersecting the upper tooth surface 341 and the lower tooth surface 342 respectively, and a plurality of second cut edges intersecting the first cutting edges 3431 The blade 3432, and the tooth bottom 3433 formed at the junction of the first cutting edge 3431 and the second cutting edge 3432, refer to Fig. 5, the first cutting edge 3431 extends outward and the second cutting edge 3432 outward The intersection of the extension and intersection extends outward to define a centerline R2, and the inclination angle A4 formed by the intersection of the first cutting edge 3431 and the centerline R2 and the inclination formed by the intersection of the second cutting edge 3432 and the centerline R2 The angle A5 is set differently, the inclination angle A4 is preferably 60 degrees, and the inclination angle A5 is preferably 30 degrees, and each slot 344 is opened at the junction of the upper tooth surface 341 and the lower tooth surface 342 And are located at a position different from the positions of the cut grooves 343, that is, the upper tooth surface 341 and the lower tooth surface 342 intersect at both ends of the groove 344 respectively to form an extension The upper tooth crest 3411 and the lower tooth crest 3421 are between the first cutting edge 3431 of the slot 343 and the second cutting edge 3432 of another adjacent slot 343, so that each slot 344 is opened in any two adjacent slots. Between the cut grooves 343, the cut grooves 343 and the cut grooves 344 are arranged alternately, and the first cutting edges 3431 and the second cutting edges 3432 are different from the upper tooth crests 3411 and the lower tooth crests 3421 At the same time, the upper tooth surface 341 extends outward from the rod body 31 and extends to the same extension distance of the upper tooth crests 3411. The lower tooth surface 342 extends outward from the rod body 31 and extends to the lower teeth The extension distances of the peaks 3421 are the same as each other.

參閱圖2至圖6所示，進行鎖合作業時，使用者首先將該鑽尖331抵頂於一鎖合物4之表面上，並於該螺頭32施予一旋轉扭力，以使該鑽尖331受該旋轉扭力帶動而鑽攻該鎖合物4，此時利用該等第一切刃3431與第二切刃3432配合該等上牙峰3411與該等下牙峰3421進行旋切，不僅有效針對該鎖合物4進行快速擴孔，以利提升整體切削速度外，同時針對該鎖合物4內部進行多角度旋切，以及有效破壞該鎖合物4之纖維，藉以有效避免該纖維纏繞於該鎖合部33及該桿體31上，更加大幅降低旋鎖扭力，且鎖合過程所產生之切屑可沿著該等切削螺牙34向外排出，更達快速排屑之功效，以及避免該鎖合過程受該切屑阻礙，亦或導致該鎖合物4裂材之情事產生，再者，部分切屑於鎖合後積存於該等切槽343、該等開槽344處及該等切削螺牙34之間，更加有助於提升拉拔力外，以及提高該螺絲3旋入之咬合穩定度。 2 to 6, when performing the locking operation, the user first presses the drill point 331 against the surface of a lock compound 4, and applies a rotating torque to the screw 32 to make the The drill tip 331 is driven by the rotational torque to tap the lock compound 4. At this time, the first cutting edges 3431 and the second cutting edges 3432 are used to cooperate with the upper tooth crests 3411 and the lower tooth crests 3421 to perform rotary cutting. , It not only effectively performs rapid reaming of the lock compound 4 to improve the overall cutting speed, but also performs multi-angle rotary cutting inside the lock compound 4, and effectively destroys the fibers of the lock compound 4, thereby effectively avoiding The fiber is wound around the locking portion 33 and the rod body 31, which greatly reduces the twisting force of the twist lock, and the chips generated during the locking process can be discharged outward along the cutting screws 34, which achieves rapid chip removal. Effectiveness, and to prevent the locking process from being hindered by the cutting chips, or causing the material to crack in the lock compound. Furthermore, some of the cutting chips are accumulated in the grooves 343 and 344 after the locking Between the cutting screws 34, it is more helpful to increase the pulling force and increase the occlusal stability of the screw 3 screwing.

參閱圖7至圖9，本發明之第二較佳實施例，其仍包含有前一實施例所述之構件，而本實施例特別在於：該等開槽344向內開設延伸至該牙底3433處，以使任二開槽344相互連通，因此，該等擴大之開槽344不僅有利於導屑與快速排屑，且可供更多切屑容納於內，以使該螺絲3與該鎖合物4間達到更緊密之咬合，藉以提升拉拔力，以及提高該螺絲3旋入之咬合穩定度。 Referring to Figures 7 to 9, the second preferred embodiment of the present invention still includes the components described in the previous embodiment, and this embodiment is particularly in that the slots 344 are opened inwardly and extend to the bottom of the tooth 3433, so that any two slots 344 are connected to each other. Therefore, these enlarged openings The groove 344 is not only conducive to chip guide and rapid chip removal, but also allows more chips to be contained therein, so that the screw 3 and the locking compound 4 can achieve a tighter engagement, thereby increasing the pulling force and increasing the screw 3. Bite stability of screw in.

歸納前述，本發明具低旋鎖扭力之螺絲，其藉由該上牙面與該下牙面相接處開設有該等切槽及凹槽，以形成該等第一切刃、第二切刃、上牙峰及下牙峰，因此，不僅可藉由該等第一切刃及第二切刃配合該等上牙峰及下牙峰快速進行擴孔，以及提升整體切削速度外，同時有效斬切該鎖合物之纖維，以利降低旋鎖扭力，再配合該等切槽與該等開槽適度容納及壓掣部分切屑，更加提升拉拔力，以及提高旋入後的咬合穩定度。 In summary, the screw with low twist and lock torque of the present invention is provided with the notches and grooves at the junction of the upper tooth surface and the lower tooth surface to form the first cutting edge and second cutting edge. Therefore, not only can the first cutting edge and the second cutting edge cooperate with the upper and lower tooth peaks to rapidly expand the hole, and increase the overall cutting speed, at the same time Effectively cut the fibers of the lock compound to reduce the twisting force of the twist lock, and then cooperate with the grooves and the grooves to appropriately accommodate and depress part of the chips, which further enhances the pulling force and improves the bite stability after screwing degree.

惟以上所述者，僅為說明本發明之較佳實施例而已，當不能以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及發明說明書內容所作之簡單的等效變化與修飾，皆應仍屬本發明專利涵蓋之範圍內。However, the above is only to illustrate the preferred embodiments of the present invention, and should not be used to 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 of the present invention and the content of the description of the invention , Should still fall within the scope of the invention patent.

(習知) (Acquaintance)

1:螺絲 1: screw

11:桿體 11: Rod body

12:螺頭 12: Screw head

13:鎖合部 13: Locking part

14:螺牙 14: Thread

131:鑽尖 131: Drill Point

(本發明) (this invention)

3:具低旋鎖扭力之螺絲 3: Screw with low twist lock torque

31:桿體 31: Rod body

32:螺頭 32: Screw head

33:鎖合部 33: lock part

34:切削螺牙 34: Cutting thread

35:輔助螺牙 35: auxiliary thread

331:鑽尖 331: Drill Point

341:上牙面 341: upper tooth surface

342:下牙面 342: lower tooth surface

343:切槽 343: grooving

344:開槽 344: slot

3411:上牙峰 3411: Upper tooth peak

3421:下牙峰 3421: lower tooth peak

3431:第一切刃 3431: first cutting edge

3432:第二切刃 3432: second cutting edge

3433:牙底 3433: tooth bottom

A1:鎖合部交會形成之角度 A1: The angle formed by the intersection of the lock

A2:上牙面與基準線形成之角度 A2: The angle formed by the upper tooth surface and the reference line

A3:下牙面與基準線形成之角度 A3: The angle formed by the lower tooth surface and the reference line

A4:第一切刃之傾斜角度 A4: The inclination angle of the first cutting edge

A5:第二切刃之傾斜角度 A5: The inclination angle of the second cutting edge

34d:切削螺牙之外徑 34d: The outer diameter of the cutting screw

35d:輔助螺牙之外徑 35d: Outer diameter of auxiliary screw

R1:基準線 R1: Baseline

R2:中心線 R2: Centerline

4:鎖合物 4: lock compound

圖1是習知螺絲之示意圖。圖2是本發明第一較佳實施例之立體示意圖。圖3是該第一較佳實施例之局部構件放大圖。圖4是該第一較佳實施例之另一立體示意圖。圖5是圖2之S-S線剖面示意圖。圖6是該第一較佳實施例之鎖合狀態示意圖。圖7是本發明第二較佳實施例之立體示意圖。圖8是該第二較佳實施例之局部構件放大圖。圖9是圖7之S-S線剖面示意圖。Figure 1 is a schematic diagram of a conventional screw. Figure 2 is a perspective view of the first preferred embodiment of the present invention. Figure 3 is an enlarged view of a partial component of the first preferred embodiment. Figure 4 is another perspective view of the first preferred embodiment. Fig. 5 is a schematic cross-sectional view taken along line S-S in Fig. 2. Fig. 6 is a schematic diagram of the locked state of the first preferred embodiment. Fig. 7 is a perspective view of a second preferred embodiment of the present invention. Fig. 8 is an enlarged view of partial components of the second preferred embodiment. Fig. 9 is a schematic cross-sectional view taken along line S-S in Fig. 7.

3:具低旋鎖扭力之螺絲 3: Screw with low twist lock torque

31:桿體 31: Rod body

32:螺頭 32: Screw head

33:鎖合部 33: lock part

34:切削螺牙 34: Cutting thread

35:輔助螺牙 35: auxiliary thread

331:鑽尖 331: Drill Point

34d:切削螺牙之外徑 34d: The outer diameter of the cutting screw

35d:輔助螺牙之外徑 35d: Outer diameter of auxiliary screw

R1:基準線 R1: Baseline

Claims

一種具低旋鎖扭力之螺絲，其包含有一桿體，一設於該桿體一端之螺頭，一相反於該螺頭且設於該桿體另一端之鎖合部，以及複數設於該桿體上且朝該鎖合部延伸之切削螺牙；其中，該鎖合部漸縮形成一鑽尖；其特徵在於：該每一切削螺牙包含有一由該桿體向下延伸之上牙面，一由該桿體向上延伸之下牙面，複數開設於該上牙面與該下牙面相接處之切槽，以及複數凹設於該上牙面與該下牙面相接處並位於不同於該等切槽所在位置之開槽；其中，該每一切槽具有複數分別與該上牙面、該下牙面相交之第一切刃，複數與該等第一切刃相接之第二切刃，以及形成於該第一切刃與該第二切刃相接處之牙底，另該開槽定義有一基準線，且該上牙面與該下牙面分別相交於該每一開槽兩端，以便該每一開槽兩端分別形成有上牙峰及下牙峰，該每一上牙峰、每一下牙峰分別延伸於一切槽的第一切刃至另一相鄰切槽的第二切刃之間，該每一開槽係開設於任二相鄰切槽之間，以供該等切槽與該等開槽呈相互交錯配置，以使該等第一切刃、第二切刃不同於該等上牙峰、下牙峰，同時該上牙面由該桿體向外延伸並延伸至該等上牙峰之延伸距離彼此相同，該下牙面由該桿體向外延伸並延伸至該等下牙峰之延伸距離彼此相同，該等開槽向內開設延伸至該牙底處，以使任二開槽相互連接。 A screw with low twist lock torque, comprising a rod body, a screw head provided at one end of the rod body, a locking part opposite to the screw head and provided at the other end of the rod body, and a plurality of screws provided on the rod The cutting thread on the rod and extending toward the locking portion; wherein the locking portion is tapered to form a drill point; characterized in that: each cutting thread includes an upper thread extending downward from the rod Surface, a lower tooth surface extending upward from the rod body, a plurality of notches formed at the joint of the upper tooth surface and the lower tooth surface, and a plurality of recesses at the joint of the upper tooth surface and the lower tooth surface It is located at a slot that is different from the location of the slots; wherein each slot has a plurality of first cutting edges that intersect the upper tooth surface and the lower tooth surface respectively, and the plural numbers are connected to the first cutting edges The second cutting edge and the bottom of the tooth formed at the junction of the first cutting edge and the second cutting edge, and the slotting defines a datum line, and the upper tooth surface and the lower tooth surface intersect at the The two ends of each slot are formed with an upper tooth crest and a lower tooth crest respectively. Each upper tooth crest and each lower tooth crest extend from the first cutting edge of the groove to the other Between the second cutting edges of adjacent slits, each slit is opened between any two adjacent slits so that the slits and the slits are arranged in a staggered manner, so that the first The cutting edge and the second cutting edge are different from the upper tooth crests and the lower tooth crests. At the same time, the upper tooth surface extends from the rod body and extends to the same extension distance of the upper tooth crests. The rod body extends outward and extends to the same extension distance of the lower tooth crests, and the grooves are opened inward and extend to the tooth bottom, so that any two grooves are connected to each other.

依據申請專利範圍第1項所述之具低旋鎖扭力之螺絲，其中，該等切削螺牙呈波浪狀態樣設置。 According to the screw with low twist lock torque described in item 1 of the scope of patent application, the cutting threads are arranged in a waved state.

依據申請專利範圍第1項所述之具低旋鎖扭力之螺絲，其中，該第一切刃與該第二切刃呈不同傾斜角度設置。 According to the screw with low twist lock torque described in item 1 of the scope of patent application, the first cutting edge and the second cutting edge are arranged at different inclination angles.

依據申請專利範圍第1項所述之具低旋鎖扭力之螺絲，其中，該上牙面向外延伸與該基準線交會之傾斜角度與該下牙面向外延伸與該基準線交會形成之傾斜角度不同。 According to the first item of the scope of patent application, the screw with low twist-locking torque, wherein the inclination angle formed by the outward extension of the upper tooth surface intersecting the reference line and the inclination angle formed by the extension outward extension of the lower tooth surface intersecting the reference line different.

依據申請專利範圍第1項所述之具低旋鎖扭力之螺絲，其中，該桿體上另設有複數輔助螺牙，且該等輔助螺牙呈完全牙型態設置。According to the first item of the scope of patent application, the screw with low twist and lock torque, wherein the rod body is additionally provided with a plurality of auxiliary threads, and the auxiliary threads are arranged in a complete tooth form.