M305861 八、新型說明： 【新型所屬之技術領域】 ' 本_是有，-種舰_之改良，尤其是指-種可自行鑽孔 之螺絲者。 【先前技術】 按’習知鑽尾螺絲，如第三圖所示者，係於—帽頭i，下延設有一 適當長度之桿體11’ ’該桿體11’之周面設有螺牙U1，，桿體11，之 攀 底端設有端刃12，、側刃13,與排屬溝14，，其被使用於螺固作業時， 排屑溝14,與側刃13’間之周壁15，會與鑽孔内壁形成摩擦，因此易 造成釘體晃動、旋轉切削不平順，故不理想。 【新型内容】 本_之主要目的係針對麵缺失而提供-種舰縣之改良， 、係包含—獅及—具有财之桿體，主妓雜體之底端設有端 疏力、側刀、主排屑溝與副排屑溝，該主排屬溝位於側刃、端刃與 '副排屑溝之間，副排屑溝位於主排屑溝與側刀之刃背之間，使本 創作之觀螺制有副溝㈣少雜，目此具料於鑽入之 功效者。 【實施方式】 二讓本㈤作之4述及其他目的、特徵與優點能更明顯被了解， 下文特舉本創作之較佳實施例，並配合所關式，作詳細說明。 請閱第-、二騎示’本創作主要是提供—種鑽尾螺絲之改良， 係於一帽頭1下延設有一適當長度之桿體Π，該桿體U之周面設有 M305861 螺牙111，干體11之底端加工形成有端刃12、側刀a及、凹陷狀之 域麟14與凹赚之嶋騎15，社湖溝14錄端刀12、 ‘ 側刀13與副排屬溝15之間，副排屬溝15位於主排屬溝14與側刃13 之刃背131之間。 由上述之構造，當可了解本創作之鑽尾螺絲之改良，主要是將習 知鑽尾螺絲排屑溝與側刃間之周壁予以凹陷成一副排屬溝;使副 鋪溝因簡科會鑛肋成雜，舰造成釘體晃 響動、旋轉切削不平順等情事，又由於其增加-副排肩溝，可使排 ' 屬更加順暢，而使本創作之鑽尾螺絲針具有易於鑽入之功效。由 於本創作之鑽尾螺絲構造為前所未有，具有新顆性，其所增進之 力效亦為省知者戶斤無法達成而具有進步性 健，符合新型專利要件，尚析賜新型專利權為禱有產業上· • 賴作可在福齡要的簡及概下以其料_形式實施。 目此’上述的較佳實施例只是以舉例的方式被舉出，且不應將其 參視為本創作之限制。本創作的範圍是由申請專利範圍所界定，而 非由說明書的内容所定義。甚者，屬於申請專利範圍之等效的變 化或修改都是落於本創作的範圍。 【圖式簡單說明】 第一圖··係本創作鑽尾螺絲之立體圖； 第二圖：係本創作鑽尾螺絲之正視圖； 第三圖：係習知鑽尾螺絲之正視圖。 【主要元件符號說明】 M305861 1 帽頭 13側刃 11 桿體 111螺牙 12端刃 131刃背 14主排屑溝15副排屑溝M305861 VIII. New description: [New technical field] 'This _ is there, - the improvement of the kind of ship _, especially the kind of screw that can drill itself. [Prior Art] According to the conventional drill screw, as shown in the third figure, it is attached to the cap i, and the lower end is provided with a rod 11' of a suitable length. The peripheral surface of the rod 11' is provided with a screw. The tooth U1, the rod body 11, the bottom end of the shaft is provided with an end edge 12, a side edge 13, and a row of grooves 14, which are used for screwing work, between the chip flute 14 and the side edge 13' The peripheral wall 15 forms a friction with the inner wall of the borehole, so that the nail body is liable to be shaken and the rotary cutting is not smooth, which is not preferable. [New content] The main purpose of this _ is to provide for the improvement of the species of the ship, the lion and the lion with a wealth, and the bottom end of the main scorpion The main drainage groove and the auxiliary discharge groove are located between the side edge, the end edge and the 'secondary chip groove, and the auxiliary chip groove is located between the main chip groove and the blade edge of the side knife, so that The snail of this creation has a sub-ditch (four) and less miscellaneous, which is expected to be effective in drilling. [Embodiment] It is to be understood that the other embodiments, features and advantages of the present invention are more clearly understood. The preferred embodiments of the present invention are described in detail below, and the detailed description is provided in conjunction with the related embodiments. Please read the first and second rides. 'This creation is mainly to provide a kind of improvement of the drill tail screw. It is attached to a cap 1 and has a proper length of the shaft. The circumference of the rod U is provided with M305861 screw. The tooth 111, the bottom end of the dry body 11 is formed with an end edge 12, a side knife a and a concave shaped domain lining 14 and a concave earning 嶋 ride 15, a social lake ditch 14 recording end knife 12, 'side knife 13 and vice Between the rows of grooves 15, the sub-row grooves 15 are located between the main row of grooves 14 and the blade backs 131 of the side edges 13. According to the above configuration, when the improvement of the drill screw of the present invention can be understood, the peripheral wall between the chip drain groove and the side edge of the conventional drill screw is recessed into a pair of drainage grooves; The ore ribs are mixed, the ship causes the nail body to sway, the rotary cutting is not smooth, and because of the increase - the secondary row shoulder groove, the row ' is more smooth, and the drill string of the present is easy to drill. The effect. Because the design of the drill-tail screw of this creation is unprecedented, it has a new nature, and its enhanced effect is also progressive and healthy for the people who know it. It is in line with the new patent requirements, and the new patent right is still praying. In the industry, • The work can be carried out in the form of the material of the company. The above-described preferred embodiments are given by way of example only and should not be considered as limiting. The scope of this creation is defined by the scope of the patent application and is not defined by the content of the specification. Incidentally, variations or modifications equivalent to the scope of the patent application are intended to fall within the scope of the present invention. [Simple description of the diagram] The first picture is a three-dimensional view of the tail screw of the present invention; the second picture is a front view of the tail screw of the present creation; The third picture is a front view of the conventional self-drilling screw. [Main component symbol description] M305861 1 Cap head 13 side blade 11 Rod body 111 thread 12 end blade 131 blade back 14 main chip ditch 15 pairs of chip ditch