200930904 九、發明說明： 【發明所屬之技術領域】 本發明係有關一種螺絲’更特別有關一種螺絲頭部，其 被旋入工件時，該螺絲頭部之齒形凸肋會將該螺絲桿體之 螺紋所切削或擠壓之毛邊及膨脹凸起壓入該工件内。 【先前技術】 參考第1 a及1 b圖’其顯示習知具有切削刃之平頭螺絲 f) 10。該平頭螺絲10包含一桿體11及一圓錐狀平頂頭部12。 該桿體11之末段漸縮呈尖尾狀’且該桿體11俥連接該頭 部12。該頭部12之圓錐面15等分設置有四個縱向圓弧狀 切削刃13。參考第2圖，其顯示兩木板16、18(或壓克力、 塑膠…等）藉由平頭螺絲10而被鎖固在一起。首先，將兩 木板16、18對正堆疊，然後以具有切削刃之平頭螺絲1〇 的桿體11在兩木板16、18上旋轉鑽孔。待該桿體11貫穿 該上側木板16且鑽入該下侧木板18 一段適當距離後，該 φ 螺絲頭部12以四個縱向切削刃13強行壓入該上側木板16 内’而使該螺絲頭部12與該上側木板16之表面切齊，以 完成鎖固兩木板16、18。 然而’習知具有切削刃之平頭螺絲1〇具有下列問題： 第一、圓錐狀平頂頭部12之四個切削刃13係呈圓弧狀， 致使切削性較差、切削阻力較大’因此鎖固的力量須較大。 第二’圓錐狀平頂頭部12之四個切削刃13係沿該頭部12 之圓錐面1 5之縱向延伸’因此該切削刃13之強度較弱， 僅適用於鎖固硬度較差之材質。第三、圓錐狀平頂頭部12 01295-TW臟及防起毛邊之螺絲 5 200930904 之四個切削刃13係沿該頭部12之圓錐面15之縱向延伸， 並呈圓弧狀，當螺絲旋入纖維較硬的硬木或結構較複雜的 複合材料時，造成鎖固後之木板16的表面不平整，亦即出 現毛邊或膨脹凸起14的情形，如第2圖所示。 本國專利公告第336705號，其標題為「具有切削刃之 平頭螺絲結構改良」，揭示了 一種具有切削刃之平頭螺絲 20 ’其包含一桿體21及一圓錐狀平頂頭部η，如第“及 〇 3b圖所示。該桿體21之末段漸縮呈尖尾狀，且該桿體η 係連接該頭部22之尾端。該頭部22之圓錐面25等分設置 有複數個縱向直角三角狀切削刀23,其併接在一起。 然而，上述圓錐狀平頂頭部22之直角三角狀切削刃^ 仍沿該頭部22之圓錐面25之縱向延伸，因此該切削刃23 不易排除毛邊，進而造成鎖固後之木板的表面不平整。 參考第4a至勉圖目前其他習知具有齒螺 30(諸如頭型平頭四齒、 ^ 卞頌，、齒、平頭八齒、雙層平頭四 ❹齒、雙層平頭六齒、雙層平頭八齒）包含一桿體η及一圓 錐狀平頂頭部32。該頭_部Μ#、 2之圓錐面35等分設置有複數 個齒形凸肋33，其皆沿嗜嫘錄_s & 白该螺絲碩部32之圓錐面35之縱向 ::。或者’螺絲3〇’(諸如頭型雙層平頭六齒六刀)包含— 桿體31及一圓錐狀平頂 項頭ο|ϊ 32。該頭部32,之圓錐面35， 等分設置有複數個齒形凸肋 部32,之圓錐面35，之縱^ 33，其延伸方向係與該螺絲頭 3之縱向成一特定角度。 然^而’上述螺絲頭部之圓錐面之齒形凸肋皆沿該螺絲頭 °之面之縱向沿一特定角度延伸，當螺絲旋入纖維較 01295-TW/防舰防起毛邊之螺絲 ' 6 , 200930904 硬的硬木或結構較複雜的複合材料時，造成鎖固後之工件 的表面不平整，亦即出現毛邊或膨脹凸起的情形。 因此’便有需要提供一種螺絲，能夠解決前述的問題。 【發明内容】 本發明之目的在於提供一種螺絲’其被旋入工件時，該 螺絲頭部之齒形凸肋會將該螺絲桿體之螺紋所切削或擠壓 之毛邊及膨服凸起壓入該工件内。 為達上述目的，本發明提供一種螺絲，包含一圓錐狀頭 邛及一桿體。該頭部具有一頂面、一尾端及至少一個圓錐 面，其中該圓錐面係位於該頂面與該尾端之間，該圓錐面 定義有複數個螺旋路徑，該圓錐面等分設置有至少兩個齒 形凸肋，其皆個別獨立地沿該些螺旋路徑延伸。該桿體包 含一螺紋’並連接該頭部之尾端。 ❹ 當本發明之螺絲被旋入工件時，該螺絲頭部之齒形凸用 會將該桿H紋所㈣或㈣之毛邊及膨脹凸祕入驾 :件2進而使該工件的表面平整，亦即不會出現膨脹凸 起、裂開或毛邊〇再去，+ 士式义〇 運丹者s本發明之螺絲被旋入該工件， 且該螺絲頭部之齒形凸肋之剖面為凾，嘉# J囬馬兩邊非對稱之三角形 時’鄰近於大角度之側邊對毛邊 迫效果。 還及蟛脹凸起具有較佳的壓 他目的、特徵、和優點能更明 並配合所附圖示，作詳細說 為了讓本發明之上述和其 顯’下文特舉本發明實施例， 明如下。 【實施方式】 (H295-TW/防裂及防起毛邊之螺絲 200930904 ❹ 參考第5a、5b及6圖’其顯示根據本發明之第一實施 例之螺絲100。該螺絲1〇〇包含一桿體lu及一圓錐狀平頂 頭部112。該桿體lu之末段漸縮呈尖尾狀，且該桿體^ 係連接該頭部112之尾端130。該桿體ln上形成有一螺紋 121，其能夠與待鎖固之工件[諸如軟木、硬木、環保複人 材料（廢塑膠與木屑之組成）…等]嘴合，以提供—個防止: 出的抗拉力。該頭部112之頂面122具有一凹槽【Μ，用 以提供鎖固工具（諸如螺絲起子）插設用。 該頭部112具有至少一個圓錐面，其位於該頂面122與 該尾端B0之間。在本實施例中，該頭部ιΐ2具有兩個圓 錐面115、115’’其定義有複數個螺旋路徑126,並由該頭 部m之頂面122延伸至該頭部112之尾端13〇，並繞行該 圓錐面115之中心軸線（axis)128。在一替代實施例中，該 頭°卩112可以只具有一個圓錐面（圖未揭示），其定義有複 數個螺旋路徑126，並由該頭部112之頂φ 122延伸至該 頭部112之尾端13〇’並繞行該圓錐面U5之中心轴線128。 該頭部112之圓錐面115等分設置有至少兩個齒形凸肋 U諸如兩個至八個齒形凸肋，其皆個別獨立地沿該螺旋 路徑126延伸，如第6圖所示。該些齒形凸肋ιΐ3係以順 時針方向沿該些螺旋路徑126由該頭部U2之頂面122延 ::該頭部112之尾端13〇,其中順時針方向係定義在該 » 112之剖面，該剖面的視線係由頭部^ 12之尾端1 ° 3 mu之頂面122。該齒形凸肋113之剖面為兩側200930904 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD The present invention relates to a screw that is more particularly related to a screw head that is screwed into a workpiece, the toothed rib of the screw head will be the screw body The burrs and expansion lobes that are cut or extruded by the threads are pressed into the workpiece. [Prior Art] Referring to Figures 1a and 1b, there is shown a flat head screw f) 10 having a cutting edge. The flat head screw 10 includes a rod body 11 and a conical flat head portion 12. The end portion of the rod body 11 is tapered to have a pointed shape and the rod body 11 is connected to the head portion 12. The conical surface 15 of the head 12 is equally divided into four longitudinal arcuate cutting edges 13. Referring to Figure 2, it is shown that the two planks 16, 18 (or acryl, plastic, etc.) are locked together by the grub screws 10. First, the two boards 16, 18 are aligned, and then the rods 11 having the cutting edge of the flat head screws 1 are rotated and drilled on the two boards 16, 18. After the rod body 11 penetrates the upper side wooden board 16 and drills into the lower side wooden board 18 for an appropriate distance, the φ screw head 12 is forcibly pressed into the upper side wooden board 16 by four longitudinal cutting edges 13 to make the screw head The portion 12 is aligned with the surface of the upper side panel 16 to complete the locking of the two boards 16, 18. However, the conventional flat head screw 1 having a cutting edge has the following problems: First, the four cutting edges 13 of the conical flat head portion 12 are arc-shaped, resulting in poor machinability and large cutting resistance. The power must be greater. The four cutting edges 13 of the second 'conical flat head 12 extend longitudinally along the conical surface 15 of the head 12' so that the cutting edge 13 is weaker and is only suitable for locking materials of poor hardness. Third, conical flat-top head 12 01295-TW dirty and anti-burring screws 5 200930904 The four cutting edges 13 extend longitudinally along the conical surface 15 of the head 12 and are arcuate, when the screw is screwed When the hard fiber hardwood or the composite structure is complicated, the surface of the wooden board 16 after the locking is uneven, that is, the burr or the expansion protrusion 14 appears, as shown in Fig. 2. National Patent Publication No. 336705, entitled "Improvement of Flat Head Screw Structures with Cutting Edges", discloses a flat head screw 20' having a cutting edge comprising a rod body 21 and a conical flat top head η, such as As shown in Fig. 3b, the end portion of the rod body 21 is tapered and has a pointed tail shape, and the rod body η is connected to the tail end of the head portion 22. The conical surface 25 of the head portion 22 is equally divided into a plurality of sections. The longitudinal right-angled triangular cutters 23 are joined together. However, the right-angled triangular cutting edge of the conical flat-topped head 22 still extends in the longitudinal direction of the conical surface 25 of the head 22, so that the cutting edge 23 is not easy Excluding the burrs, and thus causing the surface of the board after locking to be uneven. Referring to Figures 4a to 目前, other conventionally known snails 30 (such as head-type four-toothed teeth, ^ 卞颂, teeth, flat-headed octagonal, double-layered The flat-headed four-toothed tooth, the double-layer flat-headed six-toothed, double-layered flat-headed eight-toothed tooth) includes a rod body η and a conical flat-topped head 32. The head _ Μ Μ #, 2 conical surface 35 is equally divided with a plurality of teeth Shaped ribs 33, which are all along the embers _s & white The longitudinal direction of the face 35:: or 'screw 3〇' (such as the head-type double-headed flat six-tooth six-knife) includes - the rod body 31 and a conical flat-topped head ο| ϊ 32. The head 32, the cone The face 35 is equally divided with a plurality of toothed ribs 32, and the conical surface 35, the longitudinal direction 33, extends in a specific angle to the longitudinal direction of the screw head 3. However, the above-mentioned screw head The toothed ribs of the conical surface extend along a longitudinal direction of the surface of the screw head at a specific angle, when the screw is screwed into the fiber of the 01295-TW/anti-ship anti-burr screw '6, 200930904 hard hardwood or structure In the case of a complicated composite material, the surface of the workpiece after the locking is uneven, that is, a burr or an expansion bulge occurs. Therefore, it is necessary to provide a screw which can solve the aforementioned problems. The purpose is to provide a screw which is screwed into a workpiece, and the toothed rib of the screw head presses the burr and the extrusion protrusion which is cut or pressed by the thread of the screw body into the workpiece. Purpose, the present invention provides a screw comprising a cone a head cymbal and a rod body having a top surface, a tail end and at least one conical surface, wherein the conical surface is located between the top surface and the tail end, the conical surface defining a plurality of spiral paths The conical surface is equally divided into at least two toothed ribs which extend independently independently along the spiral paths. The rod body includes a thread 'and connects the tail end of the head. ❹ When the screw of the present invention is When screwing into the workpiece, the toothed shape of the screw head will push the burr and the expansion of the rod H (4) or (4) into the driving: the piece 2 will further flatten the surface of the workpiece, that is, the expansion bulge will not appear. , split or burrs, and + 士 〇 〇 者 者 者 者 者 The screw of the invention is screwed into the workpiece, and the profile of the toothed rib of the screw head is 凾, Jia #J When the triangle is symmetrical, 'the side adjacent to the large angle has a positive effect on the burrs. And the embossing embossing of the present invention will be described in detail in conjunction with the accompanying drawings. as follows. [Embodiment] (H295-TW/anti-cracking and anti-burring screw 200930904 ❹ Referring to Figures 5a, 5b and 6' shows a screw 100 according to a first embodiment of the present invention. The screw 1〇〇 includes a rod And a conical flat head 112. The end of the rod lu is tapered and has a pointed tail, and the rod is connected to the tail end 130 of the head 112. A thread 121 is formed on the rod ln. It can be combined with the workpiece to be locked [such as cork, hardwood, environmentally-friendly materials (composition of waste plastic and wood chips), etc.] to provide a tensile force to prevent: the head 112 The top surface 122 has a recess for providing a locking tool (such as a screwdriver). The head 112 has at least one conical surface between the top surface 122 and the trailing end B0. In this embodiment, the head ι 2 has two conical surfaces 115, 115'' defining a plurality of helical paths 126, and extending from the top surface 122 of the head m to the trailing end 13 of the head 112. And bypassing the central axis 128 of the conical surface 115. In an alternate embodiment, the head 卩 112 may only have A conical surface (not shown) defining a plurality of helical paths 126 extending from the top φ 122 of the head 112 to the trailing end 13〇' of the head 112 and bypassing the central axis of the conical surface U5 Line 128. The conical surface 115 of the head 112 is equally divided with at least two toothed ribs U, such as two to eight toothed ribs, each independently extending along the helical path 126, as shown in Fig. 6. The toothed ribs ΐ3 are extended in a clockwise direction along the spiral paths 126 from the top surface 122 of the head U2: the tail end 13 of the head 112 is 〇, wherein the clockwise direction is defined The section of the section 112, the line of sight of the section is the top surface 122 of the tip end of the head ^ 12 1 ° 3 mu. The profile of the toothed rib 113 is on both sides
Ci、D〗對稱之三角形（亦即角度八丨等於角度如第7 圖所示。 〇1295'TW鞠及防起毛邊之螺絲 200930904 較佳地，本實施例之之齒形凸肋113可適用於軟木、硬 木、環保複合材料之工件。當本發明之螺絲1〇〇被旋入該 工件時，該螺絲頭部H2之齒形凸肋113係與該桿體 之螺紋121進入工件方向相反，而將該桿體ui之螺紋丄以 所切削或擠壓之毛邊及膨脹凸起壓入該工件内。Ci, D symmetry of the triangle (that is, the angle of the eight 丨 equal to the angle as shown in Figure 7. 〇 1295 'TW 防 and anti-burring screws 200930904 Preferably, the toothed rib 113 of this embodiment is applicable In the case of cork, hardwood, and environmentally friendly composite material, when the screw 1 of the present invention is screwed into the workpiece, the toothed rib 113 of the screw head H2 is opposite to the thread 121 of the rod body entering the workpiece. The thread 丄 of the rod body ui is pressed into the workpiece with the burrs and expansion projections that are cut or pressed.
參考第8及9圖’其顯示根據本發明第二實施例之螺絲 200。第二種實施例中之螺絲2〇〇係大體上類似於第一種實 施例中之螺絲刚，其中類似的元件標示類似的標號。第 二種實施例中之螺絲侧與第—種實施例之螺絲⑽的差 異為該齒形凸肋213之剖面為兩側邊C2、％非對翁之三角 形（亦即角度八2大於角度I)，如第1〇圖所示。 當本發明之螺絲200被旋入該工件，且該螺絲_ & 之齒形凸肋2U之剖面為兩侧彡C2、D2非對稱之三角形 時’則鄰近於大角度之側邊C2對毛邊及膨脹凸起具有較佳 的壓迫效果。 Ο 參考第11及12圖，复顳千搞诚士找 ，、顯不根據本發明第三實施例之螺 絲3 0 0。第二種實施例中之螺絲 辱絲300係大體上類似於第一 種實施例中之螺絲1〇〇,其中麵彻 井T類似的7C件標示類似的標號。 該頭部312具有至少一個圓餘而，甘， 圓雜面其位於該頂面322與該 尾端㈣之間。在本實施例中，該頭部312具有兩個圓錐 面315、315，其定義有複數個螺旋路# 326,其由該頭部 312的頂面322延伸至該頭邻 碉312之尾端330 ，並繞行該 圓錐面315之中心軸線（i , )328 °在一替代實施例中，該 頭部312可以只具有一個圓餘而 圓錐面，其定義有複數個螺旋路 s 9 01295:TW /防裂及防起毛邊之螺絲 200930904 徑=26,並由該頭部312之頂面322延伸至該頭部312之 尾端330，並繞行該圓錐面315之中心軸線328。 該頭部312之圓錐面315等分設置有至少兩個齒形凸肋 313,諸如兩個至八個齒形凸肋，其皆個別獨立地沿該螺旋 路徑326延伸，如第12圖所示。該些齒形凸肋313係以逆 時針方向沿該些螺旋路徑326由該頭部312之頂面322延 伸至》亥頭部312之尾端33〇，其中逆時針方向係定義在該 頭部312之剖面’該剖面的視線係由頭部312 〇朝向該頭部312之頂面322。該齒形凸肋313之=為3兩0 側邊C3、Ds對稱之三角形（亦即角度、等於角度如 第13圖所示。 較佳地，本實施例之之齒形凸肋313可適用於質地堅硬 且為粉狀之結合材料或軟木的工件。當本發明之螺絲3〇〇 被旋入該工件時，該螺絲頭部312之齒形凸肋313係與該 桿體3 11之螺紋321進入工件方向相同，而具有切削作用， 〇使該螺絲頭部312下沉，並將該桿體311之螺紋321所切 削或擠壓之毛邊及膨脹凸起壓入該工件内。 參考第14及15圖，其顯示根據本發明第四實施例之螺 絲400。第四種實施例中之螺絲4〇〇係大體上類似於第三 種實施例中之螺絲3〇〇，其中類似的元件標示類似的標號。 第四種實施例中之螺絲400與第三種實施例之螺絲3〇〇的 差異為該齒形凸肋413之剖面為兩側邊C4、D4非對稱之三 角形（亦即角度A*大於角度b4)，如第16圖所示。 當本發明之螺絲400被旋入該工件，且該螺絲頭部412 01295-TW麵及防起毛邊之螺絲 '1〇 200930904 之齒形凸肋413之刮面為兩侧邊C4、D4非對稱之三角形 時，則鄰近於大角度之侧邊C4對毛邊及膨脹凸起具有較佳 的壓迫效果。 ^ 參考第17圖，其顯示兩工件116、118 [諸如軟木硬 木、環保複合材料、木板…等]藉&本發明之螺絲（以標號 1〇〇為例）而被鎖固在一起。首先，將兩工件116、118對正 堆疊，然後以該螺絲桿體ill在兩工件116·' 118上旋轉鑽 孔。待該桿體111貫穿該上側工件116且鑽入該下側工件 118 —段適當距離後，本發明之螺絲頭部112以齒形凸肋 113強行壓入該上側工件116内，以完成鎖固兩工件116、 118 〇 當本發明之螺絲被旋入該工件時，該螺絲頭部之齒形凸 肋會將該桿體之螺紋所切削或擠壓之毛邊及膨脹凸起壓入 該工件内，進而使該工件的表面平整，亦即不會出現膨脹 凸起、裂開或毛邊，如第17圖所示，再者，當本發明之螺 絲被％入該工件’且該螺絲頭部之齒形凸肋之剖面為兩邊 非對稱之三角形時，鄰近於大角度之侧邊C2、C4對毛邊及 膨脹凸起具有較佳的壓迫效果，如第及16圖所示。 雖然本發明已以前述實施例揭示，然其並非用以限定本 發明，任何本發明所屬技術領域中具有通常知識者，在不 脫離本發明之精神和範圍内，當可作各種之更動與修改。 因此本發明之保護範圍當視後附之申請專利範圍辦界定者 為準。 01295-TW/防裂及防起毛邊之螺絲 11 200930904 【圖式簡單說明】 第 圖為先_前技術之筮—仅 立體示意圖。 —種具有切削刀之平頭螺絲之 第1b圖為'VL笛j _ 意圖。 之平碩螺絲之剖線1 b-1 b之剖面示 第2圖為先前技術之第— 剖面示意圖，i& 種具有切削刀之平頭螺絲之 其顯不鎖固兩木材。 :示意ffi為先前技術之第：種具有㈣77之平頭螺 立體示意圖 絲之 第3b圖為、VL贫，.向 H 3a圖之平頭螺絲之剖線3b_3b 意圖。 …JD-Jb之剖面示 第至4g圖為先前技術之第三種平頭 示意圖。 螺絲之部分平面 第5a圖為根據本發明第一實施例 圖。 螺絲之前視示意 第5b圖為根據本發明第一實施例之 圖。 聲、4之侧視示意 第6圖為沿第5a圖之螺絲之剖線6_6 筮7園* 剖面示意圖。 第7圖為沿第6圖之螺絲之剖線7_7 -〇 4 ^ 剖面示意圖。 笫8圖為根據本發明第二實施例之螺 第9圖為沿第8圖之螺絲之剖線9-9 第1〇圖為沿第9圖之螺絲之剖線1(Kl() 、〜之前视示意圖。 之剖面示意圖。 <剖面示意圖 01295-TW /防裂及防起毛邊之螺絲 12 200930904 第11圖為根據本發明第三實施例之螺絲之前視示意 圖。 第12圖為沿第11圖之螺絲之剖線12-12之剖面示意圖。 第13圖為沿第12圖之螺絲之剖線13-13之剖面示意圖。 第14圖為根據本發明第四實施例之螺絲之前視示意 圖。 . 第15圖為沿第14圖之螺絲之剖線15-15之剖面示意圖。 第1 6圖為沿第1 5圖之螺絲之剖線16-16之剖面示意圖。 第17圖為本發明之螺絲之剖面示意圖，其顯示鎖固兩 工件。 【圖號說明】 10 螺絲 11 桿體 12 頭部 13 切削刃 14 膨脹凸起 15 圓錐面 16 木板 18 木板 20 螺絲 21 桿體 22 頭部 23 切削刃 25 圓錐面 30 螺絲 305 螺絲 31 桿體 315 桿體 32 頭部 01295-TW/防裂及防起毛邊之螺絲 . 13 200930904Referring to Figures 8 and 9, a screw 200 according to a second embodiment of the present invention is shown. The screw 2 in the second embodiment is substantially similar to the screw in the first embodiment, wherein like elements are designated by like reference numerals. The difference between the screw side of the second embodiment and the screw (10) of the first embodiment is that the profile of the toothed rib 213 is a triangle of the two sides C2 and the % non-pair (that is, the angle of eight is greater than the angle I). ), as shown in Figure 1. When the screw 200 of the present invention is screwed into the workpiece, and the profile of the toothed rib 2U of the screw _ & is asymmetrical triangles on both sides 彡C2, D2, then the side edge C2 adjacent to the large angle is burred And the expansion protrusion has a better compression effect. Ο Referring to Figures 11 and 12, the 颞 颞 搞 诚 诚 找 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The screw 300 in the second embodiment is substantially similar to the screw 1 in the first embodiment, wherein a similar 7C member of the face T indicates a similar reference. The head 312 has at least one circle, and the round face is located between the top surface 322 and the trailing end (four). In the present embodiment, the head 312 has two conical surfaces 315, 315 defining a plurality of spiral paths # 326 extending from the top surface 322 of the head 312 to the trailing end 330 of the head adjacent 312 And bypassing the central axis (i, ) 328 ° of the conical surface 315. In an alternative embodiment, the head 312 may have only one circle and a conical surface defining a plurality of spiral paths s 9 01295: TW The anti-crack and anti-burr screw 200930904 has a diameter = 26 and extends from the top surface 322 of the head 312 to the trailing end 330 of the head 312 and bypasses the central axis 328 of the conical surface 315. The conical surface 315 of the head 312 is equally divided with at least two toothed ribs 313, such as two to eight toothed ribs, each extending independently independently along the helical path 326, as shown in FIG. . The toothed ribs 313 extend from the top surface 322 of the head 312 to the trailing end 33〇 of the head 312 in a counterclockwise direction along the spiral path 326, wherein a counterclockwise direction is defined in the head The section 312 of the section is viewed from the head 312 〇 toward the top surface 322 of the head 312. The toothed rib 313 has a triangle of 3 and 0 sides C3 and Ds symmetry (that is, the angle is equal to the angle as shown in Fig. 13. Preferably, the toothed rib 313 of the embodiment is applicable. a workpiece having a hard and powdery bonding material or cork. When the screw 3 of the present invention is screwed into the workpiece, the toothed rib 313 of the screw head 312 is threaded with the rod 3 11 The 321 enters the workpiece in the same direction, and has a cutting action, so that the screw head 312 sinks, and the burrs and expansion protrusions of the thread 321 of the rod 311 are pressed or pressed into the workpiece. And Fig. 15, which shows a screw 400 according to a fourth embodiment of the present invention. The screw 4 in the fourth embodiment is substantially similar to the screw 3 in the third embodiment, wherein similar components are labeled The difference between the screw 400 in the fourth embodiment and the screw 3〇〇 in the third embodiment is that the profile of the toothed rib 413 is a triangle having asymmetrical sides (ie, angles) on both sides C4 and D4. A* is larger than the angle b4) as shown in Fig. 16. When the screw 400 of the present invention is screwed into the And the scraping surface of the toothed rib 413 of the screw head 412 01295-TW surface and the anti-pilling screw '1〇200930904 is a triangle with asymmetrical sides C4 and D4, then adjacent to a large angle The side C4 has a better pressing effect on the burrs and the expansion bulge. ^ Referring to Figure 17, it shows two workpieces 116, 118 [such as cork hardwood, environmentally friendly composite material, wood board, etc.] by the screws of the present invention ( First, the two workpieces 116, 118 are aligned and stacked, and then the screw body ill is used to rotate the holes on the two workpieces 116'' 118. 111 is inserted through the upper workpiece 116 and drilled into the lower workpiece 118 for a suitable distance. The screw head 112 of the present invention is forcibly pressed into the upper workpiece 116 by the toothed ribs 113 to complete the locking of the two workpieces 116. 118 When the screw of the present invention is screwed into the workpiece, the toothed rib of the screw head presses the burr and the expansion protrusion of the thread of the rod to be pressed or pressed into the workpiece, thereby The surface of the workpiece is flat, that is, there will be no expansion, cracking or hairiness As shown in Fig. 17, further, when the screw of the present invention is % incorporated into the workpiece' and the profile of the toothed rib of the screw head is a bilaterally asymmetric triangle, the side edge C2 adjacent to the large angle C4 has a better compression effect on the burrs and the expansion bulge, as shown in Fig. 16. Although the invention has been disclosed in the foregoing embodiments, it is not intended to limit the invention, and any of the technical fields of the invention It is to be understood that the scope of the invention is defined by the scope of the appended claims. 01295-TW/Fracture-proof and anti-burring screws 11 200930904 [Simple description of the diagram] The first picture is the first _ the former technology - only the three-dimensional diagram. - Figure 1b of a flat head screw with a cutter is 'VL flute j _ intention. Section 1 b-1 b of the flat screw of the flat shaft Fig. 2 is a cross-sectional view of the prior art, i& a flat head screw with a cutter that does not lock the two woods. : Indicates that ffi is the first of the prior art: a three-dimensional diagram with a (four) 77 flat-headed screw. Figure 3b of the wire, VL lean, and the line 3b_3b of the flat head screw of the H 3a diagram. ...JD-Jb section view The 4th to 4g diagram is a third flat head diagram of the prior art. Part of the plane of the screw Fig. 5a is a view of the first embodiment according to the present invention. Front view of the screw Fig. 5b is a view of the first embodiment according to the present invention. Side view of sound and 4 Fig. 6 is a cross-sectional view of the line 6_6 筮7 garden* along the screw of Fig. 5a. Figure 7 is a cross-sectional view of the section 7_7 - 〇 4 ^ along the screw of Figure 6. Fig. 8 is a view showing a second embodiment of the present invention. Fig. 9 is a sectional view taken along line 9-9 of the screw of Fig. 8. Fig. 1 is a sectional line 1 along the screw of Fig. 9 (Kl(), ~ Schematic diagram of the front view. <Sectional view 01295-TW / Anti-cracking and anti-burring screw 12 200930904 Figure 11 is a front view of a screw according to a third embodiment of the present invention. Fig. 13 is a cross-sectional view taken along line 13-13 of the screw of Fig. 12. Fig. 14 is a front view of the screw according to the fourth embodiment of the present invention. Fig. 15 is a cross-sectional view taken along line 15-15 of the screw of Fig. 14. Fig. 16 is a cross-sectional view taken along line 16-16 of the screw of Fig. 15. Fig. 17 is a view of the present invention Schematic diagram of the screw, which shows the locking of the two workpieces. [Description of the figure] 10 Screw 11 Rod 12 Head 13 Cutting edge 14 Expansion bulge 15 Conical surface 16 Wood board 18 Wood board 20 Screw 21 Rod 22 Head 23 Cutting edge 25 Conical surface 30 Screw 305 Screw 31 Rod body 315 Rod body 32 Head 01295-TW / crack resistant And anti-burring screws. 13 200930904
325 頭部 33 齒形凸肋 335 齒形凸肋 35 圓錐面 359 圓錐面 100 螺絲 111 桿體 112 頭部 113 齒形凸肋 115 圓錐面 1155 圓錐‘面 116 工件 118 工件 121 螺紋 122 頂面 124 凹槽 126 螺旋路徑 128 中心軸線 130 尾端 200 螺絲 211 桿體 212 頭部 213 齒形凸肋 215 圓錐面 2151 圓錐面 221 螺紋 222 頂面 226 螺旋路辱 228 中心軸線 230 尾端 300 螺絲 311 桿體 312 頭部 313 齒形凸肋 315 圓錐面 315, 圓錐面 321 螺紋 322 頂面 326 螺旋路徑 01295-TW/防裂及防起毛邊之螺絲 14 200930904325 head 33 toothed rib 335 toothed rib 35 conical surface 359 conical surface 100 screw 111 rod 112 head 113 toothed rib 115 conical surface 1155 cone 'face 116 workpiece 118 workpiece 121 thread 122 top surface 124 concave Slot 126 Spiral path 128 Central axis 130 Tail end 200 Screw 211 Rod 212 Head 213 Toothed rib 215 Conical surface 2151 Conical surface 221 Thread 222 Top surface 226 Spiral 228 Central axis 230 End 300 Screw 311 Rod 312 Head 313 toothed rib 315 conical surface 315, conical surface 321 thread 322 top surface 326 spiral path 01295-TW / anti-cracking and anti-burring screws 14 200930904
328 中心轴線 330 尾端 400 螺絲 411 桿體 412 頭部 413 齒形凸肋 415 圓錐面 4155 圓錐面 421 螺紋 422 頂面 426 螺旋路徑 428 中心軸線 430 尾端 A! 角度 八2 角度 a3 角度 a4 角度 Bi 角度 b2 角度 b3 角度 b4 角度 Cj 側邊 c2 側邊 c3 f側邊 c4 側邊 D, 側邊 d2 侧邊 d3 側邊 d4 側邊 .01295-TW/防裂及防起毛邊之螺絲 - 15 -328 Central axis 330 Tail end 400 Screw 411 Rod body 412 Head 413 Toothed rib 415 Conical surface 4155 Conical surface 421 Thread 422 Top surface 426 Spiral path 428 Central axis 430 End A! Angle eight 2 Angle a3 Angle a4 Angle Bi angle b2 angle b3 angle b4 angle Cj side c2 side c3 f side c4 side D, side d2 side d3 side d4 side .01295-TW / crack-proof and anti-burring screws - 15 -