M318681 八、新型說明： 【新型所屬之技術領域】 本創作是有關於一種自攻螺絲割尾槽構造改良，特別 是指一種易於鑽鎖在一木板上，且鎖合時不會使該自攻螺 絲之螺牙產生毀損現象及可讓屑渣易於排出之效果。 【先前技術】 請參閱第1、2圖所示，習用之自攻螺絲1 〇包括有一 頭部10、一桿身12及一設有尖端131的穿刺部13，當該 自攻螺絲10於鑽鎖木板20時，此種結構在使用上具以下 弊端：由於習用自攻螺絲1 〇的切口槽132之夾設邊均為 斜面1321，如第3圖所示；當習用自攻螺絲10攻入木板 時’由於習用自攻螺絲1〇的切口槽之斜面1321並不具有 切削功能，而在鎖附過程裡無法切斷攻入過程中所遭遇之 木板20纖維，造成木板20纖維纏繞於習用自攻螺絲1 〇 上而造成與攻入力量相反之扭矩，進而造成木板2〇的龜 裂，且斜口槽132之斜面1321排屑不易，會造成木屑堆 積於斜口槽132中無法排出而造成不易攻入之現象。 【新型内容】 本創作之主要目的在提供一種自攻螺絲割尾槽構造改 良，尤適用在易於鑽鎖在一木板上，且不會造成木板之表 面於鎖合過程中發生龜裂之現象且可導引木屑排出。 本創作之自攻螺絲割尾槽構造改良其所運用的技術手 段，係為該自攻螺絲沿其中心轴方向延伸依序包含有一頭 邛、一桿身及一穿刺部；該穿刺部具有一反向對應於該頭 M318681 口p之尖端及杯身的表面形成具有沿該中心軸線往穿刺部方 向延伸且以螺旋狀環繞之螺牙，並近於該穿刺部尖端向上 延伸有數切口槽，其切口槽由一直角邊、弧邊夹設形成一 夾角0，且該切口槽係朝向該中心軸線及環繞的螺牙相反 之一側並夾設為6。的夾角；當該自攻螺絲欲鎖入該木板時 ’該桿身之穿刺部及螺牙會對該木板產生刺鑽作用，使得 該木板會形成一有定位作用之孔位，然後導引該穿刺部漸 穿入該木板内，再藉由其切口槽之直角邊直絞攻入，鎖合 過程所產生之木屑由弧邊導引排出或於切口槽中容置，且 該切口槽周圍之螺牙會對木板產生剪切作用，在鎖入過程 中會將鑽鎖位置内的木材纖維切碎，使木屑易於排出而讓 木板不會在鑽鎖過程中產生龜裂。 【、實施方式】 參閱第4、5圖所示，本創作之自攻螺絲割尾槽構造 改良的一較佳實施例，係沿其中心軸線方向依序包含有一 頭部31、一桿身32及一穿刺部33。 該杯身3 2之表面形成具有沿該中心轴線並往穿刺部 33方向延伸且以螺旋狀環繞之螺牙34。 該穿刺部33具有一反向對應於該頭部31之尖端331 ’且該穿刺部33尖端331上之第一個完全螺牙34以上延 伸具有數切口槽332，如第6圖所示之實施例的切口槽 332 ’由一直角邊3321、弧邊3322夾設形成一夾角0， 並該切口槽332為每90度分佈，且該切口槽332之深度 需低於螺牙34與桿身32之連接位置並切入桿身32，以增 M318681 加排出木屬35的效率。 、又°月參閱帛4圖所示，前述之切口槽332係朝向該 中心轴線及環繞的螺牙34相反之-側並夾設& 6。的夾角 〇 參閲篦 /1 Λ 、6圖所示，當該自攻螺絲30欲鎖入該木板 時該#身32之穿刺部33及螺牙34會對該木板20產 生刺鑽作用’使得該木板20會形成-有定位作用之孔位 二後導引穿刺部33漸穿入該木板20内，再藉由其切口 槽332之直角邊3321直絞攻入，而鎖合過程所產生之木 屑35由切口槽332的弧邊3322導引排出或容置於切口槽 中且因該切口槽332的設置，使得該切口槽332周 圍之螺牙34會對木板20產生剪切作用，在鎖人過程中會 將鑽鎖位置内的木材切碎，使木$ 35易於排出而讓木板 20不會在鑽鎖過程中產生龜裂。 本創作之自攻螺絲割尾槽構造改良，在使用上有以下 優點且更優於習用之自攻螺絲、1〇:由於習用之自攻螺絲 10的切口槽132兩邊均為斜面1321，如第3圖所示，攻 入木板20上時，其切口槽132之斜面1321不易攻入，甚 者，更造成木板20毀損；而本創作實施例之自攻螺絲3〇 ，如第6圖所示，該切口槽332由一直角邊3321與一弧 邊3322，其中，該直角邊3321的部份利於幫助螺牙％對 木板20產生剪切作用而輕易攻入木板2〇 ;該弧邊3犯2的 部份則會將鑽鎖位置内的木材纖維切碎而利於幫助導引排 屑，使木板20不致因自攻螺絲3〇在鑽鎖時而導致其龜裂M318681 VIII, new description: [New technical field] This creation is about a self-tapping screw cutting trough structure improvement, especially refers to an easy to drill lock on a wooden board, and the lock will not make the self-tapping The screw thread is damaged and the scrap residue is easy to discharge. [Prior Art] As shown in Figures 1 and 2, the conventional self-tapping screw 1 includes a head 10, a shaft 12, and a piercing portion 13 provided with a tip 131, when the tapping screw 10 is drilled When the wooden board 20 is locked, such a structure has the following disadvantages in use: since the clamping side of the slit groove 132 of the conventional self-tapping screw 1 is the inclined surface 1321, as shown in Fig. 3; when the self-tapping screw 10 is used In the case of a wooden board, the slope 1321 of the slit groove of the conventional self-tapping screw does not have a cutting function, and in the locking process, the fiber 20 of the board encountered during the tapping process cannot be cut, causing the board 20 to be entangled in the fiber. The tapping screw 1 is twisted to cause a torque opposite to the tapping force, thereby causing the crack of the wooden board 2, and the chamfering surface 1321 of the oblique groove 132 is not easy to chip, which may cause the wood chips to accumulate in the inclined groove 132 and cannot be discharged. It is not easy to break into the phenomenon. [New content] The main purpose of this creation is to provide a self-tapping screw cutting groove structure, which is especially suitable for easy drilling and locking on a wooden board without causing cracks in the surface of the wooden board during the locking process. It can guide the discharge of wood chips. The self-tapping screw cutting groove structure of the present invention is improved by the technical means for extending the self-tapping screw along the central axis thereof, and sequentially includes a head, a shaft and a puncture portion; the puncture portion has a The surface corresponding to the tip of the mouth of the head M318681 and the surface of the cup body has a thread having a spiral extending around the central axis and extending in a spiral shape, and a plurality of slit grooves extending upwardly from the tip end of the piercing portion. The slit groove is formed by the right angle edge and the arc edge to form an angle 0, and the slit groove is oriented toward the central axis and the opposite side of the surrounding screw and is sandwiched by 6. The angle of the self-tapping screw; when the self-tapping screw is to be locked into the wooden board, the puncture portion and the thread of the shaft will produce a puncturing effect on the wooden board, so that the wooden board will form a positioning hole, and then guide the The puncture portion is gradually penetrated into the wooden board, and is directly twisted by the right angle side of the notch groove, and the wood chips generated by the locking process are guided by the arc edge or are accommodated in the notch groove, and the periphery of the notch groove is The thread will shear the wood board, and the wood fiber in the position of the drill lock will be chopped during the locking process, so that the wood chips can be easily discharged and the wood board will not be cracked during the drill lock process. [Embodiment] Referring to Figures 4 and 5, a preferred embodiment of the self-tapping screw tail groove structure of the present invention includes a head 31 and a shaft 32 sequentially along the central axis thereof. And a puncture portion 33. The surface of the cup body 32 is formed with a thread 34 extending along the central axis and extending in the direction of the puncture portion 33 and spirally surrounding. The puncture portion 33 has a tip end 331 ' opposite to the head portion 31 and the first full thread 34 on the tip end 331 of the puncture portion 33 extends over the plurality of notch grooves 332, as shown in FIG. The slit groove 332' of the example is formed by the right angle edge 3321 and the arc edge 3322 to form an angle 0, and the slit groove 332 is distributed every 90 degrees, and the depth of the notch groove 332 is lower than the screw 34 and the shaft 32. The connection position is cut into the shaft 32 to increase the efficiency of the M318681 plus the wood 35. Further, as shown in Fig. 4, the aforementioned slit groove 332 is oriented toward the center axis and the opposite side of the surrounding screw 34 and is sandwiched & The angle 〇 〇 1 、 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 当 当 当 当 当 当 当 当 当 当 当 当 当 当 当 当 当 当 当 当The wooden board 20 will form a positioning hole, and then the guiding puncture portion 33 will gradually penetrate into the wooden board 20, and then straight-twisted by the right-angled edge 3321 of the notch groove 332, and the locking process is generated. The sawdust 35 is guided by the arc edge 3322 of the slit groove 332 to be discharged or received in the slit groove. Due to the arrangement of the slit groove 332, the thread 34 around the slit groove 332 can shear the board 20 in the lock. During the human process, the wood in the drill lock position is shredded so that the wood $ 35 is easily discharged and the wooden board 20 is not cracked during the drill lock process. The self-tapping screw tail groove structure of the present invention is improved, and has the following advantages in use and is superior to the conventional self-tapping screw, 1〇: since the slit groove 132 of the self-tapping screw 10 of the conventional use is inclined surface 1321, as in the first As shown in Fig. 3, when the board 20 is tapped, the slope 1321 of the notch groove 132 is not easily broken, and even the board 20 is damaged. The self-tapping screw 3 of the present embodiment is as shown in Fig. 6. The kerf 332 has a right-angled edge 3321 and an arc-edge 3322, wherein the portion of the right-angled edge 3321 facilitates the shearing effect of the thread on the wood board 20 and easily breaks into the board 2; The part of 2 will chop the wood fiber in the position of the drill lock to help guide the chip removal, so that the board 20 will not be cracked due to the self-tapping screw 3 when the drill is locked.