TWI292800B - Dual threaded screw for composite materials - Google Patents

Dual threaded screw for composite materials Download PDF

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Publication number
TWI292800B
TWI292800B TW095114356A TW95114356A TWI292800B TW I292800 B TWI292800 B TW I292800B TW 095114356 A TW095114356 A TW 095114356A TW 95114356 A TW95114356 A TW 95114356A TW I292800 B TWI292800 B TW I292800B
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TW
Taiwan
Prior art keywords
thread
threaded portion
diameter
fastener
head
Prior art date
Application number
TW095114356A
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English (en)
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TW200724796A (en
Inventor
Cyril Laan
Original Assignee
Prime Source Building Products Inc
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Publication of TW200724796A publication Critical patent/TW200724796A/zh
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Publication of TWI292800B publication Critical patent/TWI292800B/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/0275—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the screw-threaded element having at least two axially separated threaded portions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0031—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the screw being designed to be screwed into different materials, e.g. a layered structure or through metallic and wooden parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0047—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge being characterised by its cross-section in the plane of the shaft axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0057—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
    • F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Forging (AREA)
  • Connection Of Plates (AREA)
  • Dowels (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)

Description

1292800 九、發明說明： 【發明所屬之技術領域】 本發明通常係關於適合於固緊工件的扣件。更特定+ 之，本發明係關於適用於複合材料的雙螺紋螺釘。 σ 【先前技術】
當習知螺釘插入材料時’可產生餘料或廢肩，其朝向螺 釘插入點的頂部轉移。餘料可保持在材料的表面，螺钉插 入點處或其附近’需由噴砂或其他方法清除。餘料及其他 被轉移的複合材料亦可導致"蘑菇狀面"，即經抬升之材料 的隆起或凸塊環繞在螺釘頭的周邊。因此必須反向向下鐘 擊或施力蘑菇狀面以維持平坦表面。 雖然用於螺釘的預鑽孔可減少表面餘料及/或塵益狀 面，但此技術卻費力且花時間。 若干專利揭示了用於固緊工件之雙螺紋螺釘。舉例而 言，頒予Craven的美國專利第6 666,638號揭示了 —種具 多個螺紋區段的E板螺釘。其上螺紋部分之螺距小於B累 、文口P刀上螺紋部分之外部螺紋直徑大於下螺紋部分 外部直徑。 頒予McGovern的美國專利第M66,737號揭示了 _種商 用於複合木材的E板螺針，其具有—上螺紋部分及—下= 、文口P刀纟上螺紋部&中的轴的直徑大於下螺紋部分中的 軸的直仫’且上螺紋部分每單位長度上之螺紋數目大 螺紋部分。 '下 頒予Takasaki的美國專利第 6,0005892號揭示 一種具有 110431.doc 12928〇〇 -上螺紋部分及一下螺紋部分的木螺釘。上 =角大於下螺紋部分的螺紋角，且上螺紋部分 於下螺紋部分的導程角。 導％角小 美國專利申請案第2004/014助號揭示了 材料的自攻螺釘，該自攻螺 用於铍合 A目攻螺釘具有由無螺紋區 -上螺紋部分及—下螺紋部分。 斤刀開的 下螺紋部分相反的螺距。 …刀的螺紋具有與 頒予HabermehI等人的美國專利第6,〇74，14 種具有一上螺紋部分及—下螺:不了― I 的尺寸及㈣面積比上螺紋部分螺紋大。 雖然该等組態具有其利益，但仍 或扣件，其且有捭力$ 4 At 良之雙螺紋螺釘 留於工件表面'^他且提供最大機會將餘料材料保 【發明内容】 本發明係關於一種扣件，盆 ^ ^ η. 八使件表面以上的餘料產生 小化。本發明之扣件或螺釘具有-頭部及^ :軸=附著於該頭且在其另-端包括-尖端。 雜亦包括—接近_的上螺”分及 螺紋部分。該軸启ΤΛ 4大％的下 的的首1、次部分的直徑大於軸在上螺紋部分 的的直徑。以此方，，Α 丨刀 虽餘料材料由下螺紋部分產生時， 工件的孔與上螺紋部分 # , n 0i Ψ1.. 間將存在更多空間用以容納餘 料螺釘在複合材料内 或稱外部螺紋直徑，其诵〜 累^刀具有-大徑 纹直和„ , "吊/、於下端部分的大徑或外部螺 另外’下螺紋部分的螺紋角小於上螺紋部分的螺 H0431.doc 1292800 ，次角。通常，上螺紋部分的螺距 螺針頭具有—上表面及_下、。螺紋部分的螺距。 軸的表面)可具有-環形凹座。該〜碩之下表面(即面向 積區域’以截獲螺釘進入材料時；：::座提供-開口體 頭靠近材料時，環形凹座將在 背^餘科。當螺钉 料。環形凹座較佳向内彎曲為半橢=中^ 可為凹口形、錐形、或任何適 ㈣凹座亦 體積區域以截獲鬆散餘料。4的剖面，而提供開口 螺釘頭的上表面可具有一適合接 凹座較佳形成為内方頭。該凹座亦可形成以接受::各： 驅動工具，包括菲利浦式頭及平頭螺絲起子。
將螺 刪[上ifw_bT 或内部螺紋直徑）更小之小徑（或内部螺紋直徑），此 ^允許材料中由第-或下部分之螺紋製造的 :紋部分的小徑之間的環中有更多空間，以便餘料 轉移材料可儲存於工件表面以下的孔内。因此，林明若 不排除亦將減少表面及蘑菇狀面上的餘料。 【實施方式】 圖1展示依照本發明之較佳實施例的螺釘1〇。螺釘⑺勺 括頭11及軸12。㈣包括具有尖梢16的楔形遠端15。^ 軸12包括最靠緊頭11的上螺紋部分13及下螺紋部分14。 上螺紋部分13具有第一軸直徑21 下螺紋部分Μ具有大 於第一軸直徑21的第二轴直徑22。第一軸直經以亦稱為上 端部分13的内螺紋直徑。同樣，第二轴直徑U亦稱為下端 110431.doc 1292800 部分14的内螺紋直徑。因此，軸 ^ ^ , ^ ,, , L 累、、文刀14内的橫截 面積大於軸在上螺紋部分内的橫截面積。在操作中，上螺 紋部分i3較小的軸直徑21將允許更多空間用於在轴進入工 件中時將餘料保留在螺釘孔中，從而減Μ 要的表面餘料。 ™ &个心 2考圖1及4,尖梢16具有—鋒利尖端1以促進通過材 料進行鑽孔。在一齡存眘# 士 較佳貫知例中，該尖梢為一圖4所示的 鋒利手錐尖梢，但該尖梢亦可為習知螺釘尖梢。 :參：圖卜下螺紋部分14具有螺紋18，該螺㈣始於 尖梢⑽或其附近並延伸至下螺紋部分14與上螺紋部分η 的相父處27。在楔形遠端15及尖梢16上的螺紋 為自攻螺紋。 ^ ^ 具有螺紋!7的上螺紋部分13可與下螺紋部分"並 一較佳實施财’螺紋17向独延伸且止於上螺紋部㈣ 與頭11的相交處或其附近。 上螺紋部分η的螺紋17具有第一外部直徑23及第 ⑴該第-螺距19由自一螺紋上一點(常於螺紋聲頂上) 峨鄰螺紋上相應-點⑲向距離所界定。下螺紋部分 螺紋！8具有第二外部直徑24及第二螺距2Q。第二外部❹ 24大於第一外部直徑23。在所闊明的實施例中，下螺” 分Μ的第二螺距20大於上螺紋部分13的第—螺距 而，第二螺距20可等於或小於第一螺距19。 ，…、 上螺紋部分13的螺紋17具有第一螺紋角25，該第_ 角25由螺紋17的外表面所界^。下螺紋部分μ的螺紋a具 110431.doc 1292800 界〜、文角26，该第二螺紋角26亦由螺紋1 8的外表面所 ； 本t明中，第二螺紋角26較佳小於第一螺紋角 25。此進 _ ah Ββ 〆务了為本發明提供將餘料保留於上螺紋部 义13附近之能力的目的。 44。第^圖1及3A，頭U具有第一頭直經43及第二頭直徑 亦為^頭直徑43較佳大於第二頭直徑44’但其他實施例 二外部=\佳地，第—頭直徑似於下螺紋部分14的第 F累、、文直控2 4。頭1 1且右μ本品J 〇 面41大！^工 貝有上表面42及下表面41。下表 體上平行於上表面42且包合# 4。提供開，區域39以截獲當 擠出$飭饿復田螺釘進入材料或工件時可 二I::門當螺釘1〇進… 4〇可向内體積區域39中已存的餘料。環形凹座 3E，只要.、回把所不的半橢圓形剖面。參考圖3C-要碩在工作條件下維持結 40亦可為凹口 # y 70整性，則環形凹座 满 巧凹口形、錐形、或任何會提供 獲鬆散餘料的適合形狀剖面。 體積£域以截 現參考圖2及3A_E，頭u 該下凹開口 3〇诞w 表面42具有下凹開口 30， 收可用來·驅動螺釘進入 下凹開口30較佳形成 科之驅動工具。 受各種其他驅動工凹開口3〇亦可經形成以接 蓉於士 包括菲利浦式頭及平頭螺❹工 Μ本揭_容’㈣Tl2 ' U起子。 習此項技術者所熟知的其他。螺製造或製造為熟 造複合螺針的適合材料製成。 石厌鋼或其他用於製 層頂部塗層，該頂部塗…上-鋅電鏟層及- 110431.doc 層舆螺钉將安置於其中之表面的顏 1292800 色相匹配。 雖然本發明已聯繫複合木材加以描述，但熟習此項技術 者應瞭解本發明可應用於固緊其他產品及建構材料。雖然 本發明已按照較佳實施加以描述，但本發明並不想受限於 上面的實施例或圖示。屬於下面申請專利範圍之精神及範 圍内的任何修改或替換應考慮為本發明的部分。 【圖式簡單說明】
圖1為本發明之一實施例的正視圖。 圖2為本發明之一實施例的端視圖。 圖2之線3 - 3 圖3A-3E為本發，明可用之螺釘頭組態大致沿 獲取的各種的橫截面圖。 細視圖 圖4為適用於本發明之螺針的尖梢的詳 【主要元件符號說明】 10 螺釘 11 頭 12 軸 13 上螺紋部分 14 下螺紋部分 15 楔形遠端 16 尖梢 17 螺紋 18 螺紋 19 第一螺距 20 弟—螺距
110431.doc -10- 第一軸直徑 第一外部直徑 第二外部直徑 第一螺紋角 第二螺紋角 相交處 下凹開口 開口體積區域 環形凹座 下表面 上表面 第一頭直徑 第二頭直徑 -11 -

Claims (1)

  1. 修(更)正替換 12921_咖號專利申請案 中文申請專利範圍替換本(96年5月） . —_ 十、巾請專利範圍·· 产年Γ月外 L 一種扣件，其包含 一頭； 一具有一第一端及一第— 該轴具有-上螺紋部分及一;尖端’· 分比該下螺紋部分更靠近該頭端·，。刀’該上螺紋部 該上螺紋部分且右_ 一第二轴直徑，其中該第’該下螺紋部分具有 該頭有—外直徑， 上仏小於該第二軸直徑； 分，外部螺紋直徑之外直H上螺紋部分及該下螺紋部 亥上螺紋部分有_第一螺紋角，且 第二螺紋角，其中該 °〆下螺紋部分有一 2·如請求们之扣株，！ 角大於該第二螺紋角。 伸至該下螺紋部分/、中該上螺紋部分沿該轴自該顯延 3·如請求項1之扣件 並置。 4·如請求項1之扣件， 螺紋直裎且哕下41/、 “累紋部分具有一第一外部 k且訂螺紋部分具有 ^ 中該第—外部螺故直徑小於；;卜^螺紋直徑，其 5·如請求们之扣件，其中該上外部螺紋直徑。 =下螺紋部分具有—第二螺二具二-第-螺距 5亥第二螺距。 ”中该弟一螺距小於 6 ·如請求項；j 牛，其中該尖端為1攻尖梢。 110431-960516.doc W 其中該上螺紋部分與該下螺紋部分 1292800 7 . 卜钩丨 」 •如請求項i之扣件，纟中該尖端為一手錐尖梢S • 1請求項i之扣件，其中該頭具有—頂面及 頂面具有-凹座以接收-驅動工具，該底面心面’該 隆脊。 甸具有—環形 :〇 Ht項8之扣件，其中該凹座包含-方形開口。 •如㉖求項8之扣件，其中該凹座包含一槽。 =·如請求項8之扣件，其中該環形隆脊具 12 ·如請灰 y &截面。 欠項δ之扣件，其中該環形隆脊 截面。 +橢圓形横 13. 一種扣件，其包含： ~頭； -端2一第一端及一第二端的軸’該頭於該轴的該第 螭附者於該軸且該軸的該第二端具有一尖端. 第 該轴具有-上螺紋部分及-下螺紋部分 ν 刀比該下螺紋部分更靠近該頭端；& f紋部 第一螺紋角，該 螺紋角，其中該 螺紋角大於該第 上螺紋部分具有一第一軸直徑及 下螺紋部分具有一第二軸直徑及一第 第耗直徑小於該第二軸直徑且該第 二螺紋角；及 該碩具有一頂面及一底面，該頂面具 收一驅動工具，該底面具有-環形隆脊。"座，以接 14·如請卡丁在 袖 3之扣件，其中該上螺紋部分沿該軸自，-百 伸至該下螺紋部分。 車“该頭延 15+如請求項13之扣件’其中該上端螺纹與該下㈣部分並 】】〇431-960516.dOC -2 · 1292800
    置 尹該第—外部料直-刀具有一第二外部螺紋丄 17.如請求項13之扣件，t小於該第二外部螺紋直徑 且該下螺紋部分具有1 中該上螺软部分具有-第 螺距 其中該第一螺距小於 且該下螺紋部分具有 該第二螺距。 18. 一種螺卸，其包含·· 一頭； 具有一第一端及—苐一山 -端附著於該轴，且—端的轴’該頭於該袖的該第 該轴具有-上螺紋部分::第二端具有-尖端； 分比該下螺紋部分更靠 T螺紋部分，該上螺紋部 ^ L >» , 邊碩端；及 ”亥上螺紋部分具有一第— 第-外部螺紋直徑，該下：直徑、-第-螺紋角及- 弟—螺紋角及一第*弟—轴直輕、 ΛΤ< ? , Λ Γ 4螺紋直經，J： Φ #势 ^ 徑小於該第二轴直徑，幻工其中5亥第—轴直 且哕第况 人一螺紋角大於該第二蟫紋自 且》亥弟-外部螺紋直輕小 &系'次角， 該頭且有H w弟二外部螺紋直徑；及 只丹有一頂面及一底 收一 ^ ^ Τ θ ·，該頂面具有一凹座，以拯 收^動工具，該底面具 Μ接 、为~ %形隆脊。 110431-960516.doc
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