201236834 六、發明說明： I：發明戶斤屬之技術領域3 發明領域 本發明係有關於設置有為刀片提供開啟輔助之機構的 折疊刀，且特別係有關於一其中彈簧作用在該刀片上以驅 動該刀片由關閉位置至開啟位置之刀。 L先前技冬恃3 背景 大部份的折疊刀具有某種將刀片或工作工具固持在關 閉位置之機構，且在該關閉位置時，該刀片之銳利邊緣被 安全地固持在握把内。目前已有多種用以將刀片扣持在該 關閉位置之習知機構，且已有各種為何使用這些機構之理 由，連同其他理由，刀片扣持機構可防止不小心開啟該刀 且因此提高安全性。 自動開啟機構與所謂“開啟輔助”機構可加入折疊刀 中，一般而言，在一具有一自動開啟機構之刀中，該刀片 被一具鎖扣觸發機構固持在關閉位置。當關閉時，該刀片 係在一來自一彈簧機構之固定“預加負載”壓力下。當釋放 該觸發器時，該刀片被該彈簀機構自動地驅動至開啟位 置。另一方面，在具有開啟輔助機構之刀中，該刀片係被 扣持在該關閉位置中且不需要一鎖扣或觸發器。該開啟輔 助功能係由一在該刀片上操作之彈簧機構來提供，且當使 用者將該刀片由關閉位置手動地轉動至開啟位置時，作用 在該刀片上之彈簀機構到達一臨界點。在該刀片轉動超出 201236834 該臨界點後，該彈簧將該刀片驅動至該開啟位置。 設置有自動與開啟輔助機構兩者之刀通常包括用以將 該刀片鎖定為開啟之某種鎖定機構，且在許多開啟輔助刀 中，驅動該刀片開啟之相同彈簧機構亦將該刀片扣持為關 閉。 基於多種理由，開啟輔助機構變得非常受到歡迎。例 如，在適當環境中且對適當使用者而言，有許多由輔助開 啟刀所衍生之優點及自動刀會非常有用之許多情形。這些 通常包括使用者僅有一隻空手之情形，但是，即使在一包 括一自動開啟或開啟輔助機構之刀中，安全考慮一直強制 該刀片停留在關閉位置直到使用者將該刀片有意地且故意 地移動至該開啟位置為止。例如，一將一刀片固持為關閉 之機構在刀掉落時應決不會釋放。隨著開啟輔助刀愈來愈 受到歡迎，已有許多種新的機構發展出來。 但是，一直需要有為刀提供一開啟輔助特性之機構。 【發明内容】 本發明包含具有一開啟輔助機構之折疊刀，且在一第 一所示實施例中，本發明之機構依靠一對扭轉彈簧，且該 對扭轉彈簧被軸向地固持在該刀片軸銷上並在一對相對該 刀握把為固定之軸套内。在該刀片之各橫向側上有一彈簧 與一軸套，且各彈簀之一腿部固定在該軸套上。該彈簧之 相對腿部跨置在一袋部上，且該袋部形成在該刀片之表面 上且軸向環繞該刀片軸插入通過之開口。當該刀片在該關 閉位置時，該扭轉彈簣“被加上負載”，但不會將它們的彈 4 201236834 力施加至該刀片，而是將它們的力施加至該固定軸套。當 該刀片由該關閉位置朝該開啟位置轉動時，該等彈簣之腿 部轉動通過且合作形成在該等軸套上之結構，以將該等彈 簧壓力立即傳送至該刀片並驅動該刀片開啟。當該刀片如 此由該關閉位置朝該開啟位置轉動時，一旦通過該刀片轉 動之一預定轉動點，或“臨界”點，本發明之機構可轉動地 驅動該刀片到達完全開啟位置。這是利用該等成對彈簣達 成，且該等彈簀作用在該刀片上且因此對該刀片施加足夠 之轉動動能使該慣量將該刀片驅動至完全開啟位置。一鎖 定機構將該刀片鎖定在該開啟位置。當該刀片由該開啟位 置轉動至該關閉位置時，該等扭轉彈簧將再次被加上負 載，且一旦通過一所需轉動點，各彈簧之一腿部便移入該 軸套中之一袋部且該彈簧之轉動力由該刀片傳送至該固定 軸套，使該刀片可停留在該關閉位置。 本發明之機構亦可構成為僅依靠一扭轉彈簧，且該扭 轉彈簧在結構上與功能上與前述成對彈簣相同。 圖式簡單說明 藉配合以下圖式參照本發明之以下詳細說明，可更佳 地了解本發明且明白其多數目的與優點。 第1圖是本發明之一具有一開啟輔助機構之刀之第一 所示實施例的立體圖，且第1圖所示之刀的刀片係位於鎖定 之開啟位置。 第2圖是第1圖所示之刀的側面圖。 第3圖是類似第2圖之側面圖，且所示之刀片位在開啟 5 201236834 位置與關閉位置間之中途。 第4圖是第3圖中所示之刀的側面圖，顯示該刀片位在 完全關閉位置。 第5圖是第1圖之刀的分解立體圖，顯示所選擇之組件。 第6圖是其中一扭轉彈簧之立體圖。 第7圖是另一相對扭轉彈簧之立體圖。 第8圖是其中一軸套之立體圖。 第9圖是該刀片之柄腳部份的立體圖，顯示其中設有一 扭轉彈簧之刀片袋部。 第10至13圖半示意地顯示當該刀片由該開啟位置轉動 至該關閉位置時發生之一系列之結構性步驟。 第10圖是一側面、半示意與橫截面圖，顯示當該刀片 在完全開啟與鎖定位置時，該自動輔助機構之結構。 第11圖是一側面、半示意與橫截面圖，顯示當該刀片 已由該完全關閉位置朝該開啟位置轉動大約60°時，該自動 輔助機構之結構。 第12圖是一側面、半示意與橫截面圖，顯示當該刀片 已由該完全關閉位置朝該開啟位置轉動大約40°時，該自動 輔助機構之結構。 第13圖是一側面、半示意與橫截面圖，顯示當該刀片 在關閉位置時，該自動輔助機構之結構。 第14圖是通過握把之前方部份所截取之第1圖之形式 化頂橫截面圖，顯示該刀片位於該開啟位置。 第15圖是通過與第14圖相同之位置所截取之形式化頂 6 201236834 橫截面圖，但顯示該刀片位於該關閉位置。 第16至19圖是一連串半示意與半橫截面圖，顯示在該 刀片由開啟位置轉動至關閉位置時發生之一連串事件期間 的刀片、扭轉彈簧與軸套。 第16圖顯示當該刀片位於該開啟位置時，該等刀片、 扭轉彈簧與軸套之結構配置。第16圖大致對應於第10圖。 第17圖顯示當該刀片由該完全開啟位置朝該關閉位置 轉動大約120°時，該等刀片、扭轉彈簣與軸套之結構配置。 第17圖大致對應於第11圖。 第18圖顯示當該刀片由該完全開啟位置朝該關閉位置 轉動大約140°時，該等刀片、扭轉彈簧與軸套之結構配置。 第18圖大致對應於第12圖。 第19圖顯示當該刀片位於該關閉位置時，該等刀片、 扭轉彈簧與軸套之結構配置。第19圖大致對應於第13圖。 第20至25圖顯示本發明之一開啟輔助機構之另一較佳 實施例。詳而言之， 第20圖是顯示本發明之一開啟輔助機構之一刀之選擇 結構的立體及部份剖視圖，且以一分解圖顯示各種部件。 第21圖是第20圖所示之刀之選擇結構的立體橫截面 圖，顯示與一握把側壁組裝在一起之刀片且該刀片係在該 關閉位置。 第22A圖是第20圖所示之刀之選擇結構的橫截面圖，且 該刀片係在該完全開啟位置。 第22B圖是第22A圖所示之刀之橫截面圖，且該刀片轉 201236834 動至一在完全開啟與完全關閉之間的中間位置，並且該彈 簧之腿部在一位置結合該刀片以將該刀片由該關閉驅動至 開啟。 第22C圖是第22A與22B圖所示之刀之橫截面圖，且該 刀片係在該完全關閉位置。 第23圖是一具有第20圖所示之開啟輔助機構之刀的平 面圖，且該近側壁被移除以暴露該刀片及開啟輔助機構並 且該刀片係在該關閉位置。 第24圖是一類似第23圖之平面圖，但顯示該刀片在當 它由該開啟移動至該關閉位置時之一中間位置。 第25圖是一類似第22與23圖之平面圖，但顯示該刀片 係在該完全開啟位置。 C實施方式3 較佳實施例之詳細說明 本發明之具有一開啟輔助機構之折疊刀1 〇的第一所示 實施例係顯示在第1至19圖中。折疊刀10包括一長形握把 12、及一可樞轉地連接在該握把上且位於其一端處一以下 稱為該握把之“前”端。其他相對方向用語對應於這規則： 該握把之“後”或柄端與該前端相對；該刀片之“上”部是鈍 的非工作部份且該刀片之“下”部是被磨利的工作部份； “内”或“向内”表示該刀之結構中心等。第1與2圖顯示該刀 10，且該刀片14位於該開啟位置。第3圖顯示位於其由該開 啟位置轉動至該關閉位置之中途的刀片，且在第4圖中，所 示之刀片位在部份以虛線顯示之刀片被收納在一刀片收納 8 201236834 槽中的關閉位置，且該刀片收納槽形成在該握把12内且位 在側壁之間。一X-Υ-Ζ軸座標顯示在第！圖中，且χ_γ平面 係定義為平行於由該握把12與刀片14所界定之平面的平 面一當該刀片在該關閉位置與該開啟位置之間轉動時它在 該Χ-Υ平面中移動。該Ζ平面是與該χ_γ橫交之平面—該刀 片樞銷在該Ζ平面中縱向地延伸。 本發明之刀10的刀片14具有一刀片鎖定機構，使得該 刀片可以確貫地被鎖定在該開啟位置，以防止該刀片不小 心移動至其關閉位置。以下將說明該刀片鎖定機構。 刀10之握把12包含數個組件，包括一對大致以16、18 表示之相對設置側壁段，且該等側壁段16、18互相平行並 被分隔器20分開，而第1圖中僅顯示其中一分隔器2〇。各側 壁段16與18包含被固持成互相平行的一襯墊及一外板，詳 而言之，側壁丨6係由襯墊17與外板19形成。類似地，側壁 18係由襯墊21與外板23形成。該等分隔器20是具有一内螺 孔之圓柱形套筒，且多數螺絲22螺入前述内螺孔。如此， S亥等螺絲將該等分隔器連結在該等側壁16與18之襯墊17與 21 ’以維持該握把12與以一分開關係被固持之側壁16與18 呈一連結關係。側壁段16與18可由如一強化合成塑膠之任 何適當材料製成；其他適當材料包括金屬、其他塑膠、木 材等。該等側壁段可以單件或多件方式製成，且如第1圖所 不，如有需要，可以包括一選擇性袋部夾17一該夾連接在 該側壁16之外表面上。 s亥刀片14可樞轉地連接在該握把12且靠近該握把之前 201236834 端，與刀10—起使用之刀片可為任何習知種類。在圖式中 所示之刀片包含一以24表示之長形工作部份及一以26表示 之柄腳部份，且該刀片14係可以一刀片軸銷（以下詳述)樞轉 地連接該握把12。工作部份24通常包括一銳利邊緣30及一 無鋒邊緣32，且一拇指操作凸耳34可包括在刀片14，以協 助開啟與關閉該刀片。 —刀片收納槽36利用前述螺絲22而形成在該等側壁 16、18之間，且該刀片收納槽36界定出一當該刀片14移動 至其關閉位置時將該刀片14收納於其中之槽孔。當該刀片 位於該關閉位置時，該刀片之銳利邊緣30被安全地固持在 該握把之範圍内。 刀片14連接於握把12，使得當該刀片14位於其開啟位 置（第1圖）時，該刀片之工作部份24延伸遠離該握把12，且 當該刀片在該開啟位置或該關閉位置時，柄腳部份26位在 该刀片收納槽36内並在該成對握把側壁之間。即，該柄腳 部份26—直位在握把12之側壁16與18之間。該刀片係可以 該刀片偏肖樞轉地連接在該握把上，且該刀片偏肖與該刀 片之平面榼交地延伸並形成一刀片樞軸。請參閱第$圖，刀 二轴銷28係由―圓柱形套筒44形成，且該套筒44延伸通過 一形成在襯塾21中之孔40及-形成在該襯㈣中之對齊孔 42並且°亥套筒亦延伸通過穿過刀片14之柄腳部份26的針 齊拖轉孔46。在“〜 的對 在組裝完成之刀10中，圓柱形套筒44 ^片14f柄腳部份26中之枢轉孔46緊密且固定地嵌合，使 传。亥套筒界疋出相對於該刀片與該等側壁之平面橫向延伸 201236834 的刀片轉動柩軸。如此，套筒44與該Z方向軸向地成一直 線一與該X-Y平面橫交。請繼續參閱第5圖，套筒44之其中 一端具有一唇部45，且該唇部45之外周緣是有刻紋的。該 套筒44之相對端係被收納在各個握把中之圓形柱坑凹部47 内，且在第5圖中僅顯示其中一柱坑凹部47。多數墊圈50配 置於該刀片14及該等襯墊17與21之間，使得該套筒44延伸 通過塾圈。 一刀片擋銷48之相對端錨固在形成於外板19與23中之 柱ί几孔52且以螺絲3 6與54(在第5圖中僅顯示其中·一柱坑孔 52)固持定位，且第5圖中所示之螺絲38螺入在襯墊17中之 螺孔39--相同螺絲螺入在襯塾21中之螺孔39。 當該刀10以前述與在圖中所示之各種螺絲與分隔器組 合起來時’該專圓柱形套筒44之相對端被破實地扣持在柱 坑凹部47且該刀非常穩定。 如前所述，刀10具有一用以將該刀片鎖定在該開啟位 置之鎖定機構。請參閱第5圖，該鎖定機構係大致以符號56 表示且完整地揭露在讓渡給本發明之受讓人且在此加入作 為參考之美國專利第6,574,869號中。詳而言之，在本發明 之刀10中所使用之鎖定機構56與在專利第6,574,869號之第 14至17圖中所示且在該專利之說明書中所述之鎖定機構相 同。在此可了解的是因為該鎖定機構56不會形成本發明之 一部份，所以在附圖中並非所有鎖定機構之組件均以符號 顯示或標明。然而，其中標明刀片鎖銷57 ;它是一延伸通 過該刀握把且其相對端延伸通過在該等握把中之槽孔的受 201236834 彈簧偏壓銷，且該銷57藉由其與該柄腳部份26之特殊化表 面接觸而將該刀片鎖定在該開啟位置。在此亦應了解的是 有許多種不同可與在此所述之開啟辅助機構一起良好地作 用之鎖定機構’包括例如襯墊鎖與回鎖（lock back)機構。 6月參閱第5圖，刀10具有一包含數種組件之開啟輔助機 構60。該機構60將大致先參照數個圖說明，且其結構與操 作將接著參照其他圖詳細說明。如第9圖所示，刀片14之柄 腳部份26具有一環狀地圍繞該孔46形成之 圓形凹部62，且 刀片軸銷28延伸通過該孔46。該座部62在該刀片之柄腳表 面中界定出一環狀凹孔’且該環狀凹孔可藉研磨該刀片或 在模鑄該刀片時形成。如此，該凹部具有一凹陷至該柄腳 部份26之其餘部份之表面66高度下方的底座面64。一階部 68形成該底座面64之外周邊緣，且一袋部或溝槽7〇形成在 凹部62中’使得該溝槽由通過孔46之中心軸向外輻射。該 溝槽70界定出一圓柱體之一部份，使得其壁是彎曲的。如 以下所述，因為該溝槽之壁是彎曲的，所以在該刀片轉動 時之某些時候跨置在該溝槽中之彈簧腿部可進入與離開該 溝槽。一彎曲或傾斜段72在孔46邊緣處由該溝槽7〇之一側 延伸出來且向上傾斜—小段徑向距離，直到該傾斜段到達 底座面64之高度為止。由於以下所詳述之理由，該傾斜段 72是非必要的。最後，該圓形凹部62包括一由溝槽7〇最外 緣延伸一小段徑向距離且環繞該圓形凹部之向外形成扇形 部伤74，並且该向外形成扇形部份％之邊緣界定出一具有 大於該圓形凹部62之其餘部份之直徑的部份。 12 201236834 雖然在第9®帽顯*刀以之 的是刀片.... 仁疋在此應了解 凹部。如以 結構與在此料麵目同之圓形 構係相對笛OISlrh _ 之5亥圓形凹部結 對第9圖中所示之結構軸向地旋轉。 圖中該^辅助機卿之-組件的下—結構係顯示於第8 且具有I含-軸_。轴套8G是—大致圓㈣構件Μ， 86與88二間隔地形成在該軸套外壁四週之平”份84、 …。各平坦部份沿軸套8G之圓柱形壁89部份地延伸， |定出各平坦部份之止擔部85。如以下所詳述者，該袖 套插入-在該襯塾中之形狀配合之圓形孔，該圓形孔具有 三個對應於在該軸套上之三個平坦部份84、86_的平坦 部份。該軸套之三個平坦部份與在該等襯墊中之孔的平坦 部份合作，以相對該襯墊固定該軸套且藉此防止該軸套相 對該襯墊轉動。該軸套80之“内部，，界定出一在第8圖中之第 一直徑D1，且在該軸套之“封閉，，端83處之孔界定出一小於 D1之第二直徑D2，並且該内圓柱形壁89界定出一高度u。 最後，在圓柱形壁89之内環狀邊緣94中形成有一第一缺口 9〇及一第一缺口 92。第二缺口 92小於第一缺口 9〇，且在該 等墊圈50中之内孔直徑大於軸套80之外徑，使得當該刀組 合完成時’該等軸套如以下所詳述地延伸通過該等堅圈。 以下請參閱第6與7圖，其中顯示在該開啟輔助機構6〇 中所使用之兩扭轉彈簧96與98。該等彈簧96與98互為鏡像 且具有一略小於軸套80之圓柱形壁89高度L1的本體長度 L2、及一略小於軸套80之直徑D1的直徑D3。彈簧96是一左 13 201236834 旋彈簧且彈簣98是-右旋彈簧，在此應了解的是有許多不 ^種類之可在本發明中使㈣扭轉彈簧。在此所示之該等 彈簧％與98❹有職本料份⑻及筆直㈣⑽與呢 之扁平線型彈簀，且該•部⑽與脱形成彈簣端。 以下將一轴套及一杻轉彈簧來說明開啟輔助機構之組 裝，但是’由在狀㈣及所示實關之圖式可知，該開 啟輔助機構依靠在該刀片之各側上的-軸套與扭轉彈簧。 然而’-開啟輔助機構可依據在此僅使用一扭轉彈簧之揭 露來構成。換言之，本翻之·輔_構可㈣一在該 刀片之-橫向側上的彈*來製造。軸—在該刀片之兩側 上的彈簧是較佳實施例，但—單一彈簧機構亦是適當的。 請再參閱第5圖，刀10係利用被收納在刀片i 4相對側上 之圓1凹。卩62中的彈簧96與98來組裝。各扭轉彈簧之各腿 部1〇〇靠置在軸_中之細9G中，且軸套_人通過概塾 17之孔C ’並且該等平坦部份& '轉顺齊形成在該概 塾中之對應平坦部份。該軸套可插人通過孔42，直到該等 止擔部85抵靠賴墊之外壁為止。如前所述，該軸_之 平坦部份與穿触墊n之孔Μ的倾部份合作，以相對該 襯塾固定該軸套。換言之，軸套⑽無法轉動。因為輛套⑽ 之直徑D2小於該等彈簧之直徑⑴，彈簧98被固持在轴_ 之内部’且被扣持在該軸套中。在刀片⑷目對橫向側上之 彈簀96與軸套_用襯墊21以相同之方式組裝，且彈等％ 之“外”腿部100被固持在該軸套之缺口 9〇中。因為該軸：無 法轉動且該彈簧之腿部1〇〇被固持在缺口 9〇中各彈簧之= 201236834 腿部相對該握把12被固定。圓柱形套筒44被插入通過該等 軸套、該等彈簧、及該刀片，且該套筒之相對端分別被扣 持在握把側壁段16與18之各外板19與23中的柱坑部份47 内。在套筒44一端上之有刻紋外唇部防止該套筒相對該握 把轉動，且在此應了解的是因為套筒44被軸向插入通過該 等彈簧之中心，該套筒作為該等彈簧之心軸。 如前所述，彈簧96之本體長度L2略小於軸套8〇之高度 L1。當刀完全組裝完成且該握把兩半螺接在一起時，如前 述般相對握把12固定之軸套80將彈簧96與98最内側腿部 102固持在該刀片兩側上之溝槽70中，且軸套8〇之内環狀邊 緣94緊臨該表面64。 »月參閱第9圖，當§亥刀1〇組裝時，且至少在該刀片如下 詳述般地由關閉至開啟，且由開啟至關閉轉動之某些時 候，彈簧96之腿部102位於溝槽7〇中。腿部1〇2之長度大於 圓形凹部62之傾斜段72的長度(例如，如第關中所示），如 此，當彈簧96與其他相關組件—起組裝時，腿部ι()2之端部 K申至溝槽7G中通過傾斜段72結束之點。當彈簧％在 党到轉動扭力之作用—即，當該彈簧“被加上負載” 時’溝槽70之傾斜表面在z平面中產生—力向量—即，與該 刀片之平面棱交—域力向量推動彈簧％之腿部脱向外 遠離在圓柱形凹部62中之溝槽並遠離通過刀片之縫向中心 t換言之’因為強迫抵靠腿部⑽之溝槽贿面一直是傾 斜的’所以在該Z平面中合古 ^ ^ S有—將該腿部朝該軸套80推出該 '曰，且傾斜段72提供讓該彈簧腿部1G2可以完全向下 15 201236834 。；溝軋70中之機械間隙。如前所述且如圖中所示，該 等彈箸96與98&扁平線型彈I。在該彈簧腿部與該溝槽70 之^邊間之相對幾何構形是重要的，使得該彈簧腿部可移 ”移出t冓槽。在此應了解的是此處所述之幾何形狀可 以加以修改並達成相同之功能特性。 S亥固疋軸套80將該腿部102固持在該溝槽70中 ，但當刀 片轉動且捲繞轉彈簧-即，對該轉簧加上負載時，該 腿部102沿__之内環狀邊緣94滑動 ，直到該等腿部之 内幵1始跨置在該等溝槽7Q之傾斜侧上。當繼續轉動且該 等腿部1G2朝缺σ92轉動時’藉溝槽7〇之傾斜邊緣，-力向 量朝該2平面之方向施加在腿部102上。當腿部1〇2對齊軸套 8〇中之缺092時’該等腿部被迫非常快速地進入該等缺口 中。虽s亥等腿部1〇2被移動至該等缺口 92中時，該等彈簧之 轉動力立即脫離該刀片上且轉移至如前所述為固定之軸套 上。 以下將以該刀片14位於關閉位置（例如第4、13與15圖） 開始詳細說明開啟輔助機構60之操作。當該刀片14位於該 關閉位置時’該開啟輔助機構60沒有對該刀片施加壓力。 當該刀片位於該關閉位置時，該等彈簧96與98被扭轉地捲 繞且被加上負載’但它們的轉動力透過腿部1〇2施加至該等 固定軸套80。因此，該開啟輔助機構60沒有對該刀片施加 壓力’且藉該鎖定機構56施加至該刀片之柄腳的力，該刀 片被扣持在該關閉位置。這鎖定機構56之細節係完整地揭 露在美國專利第6,574,869號中。由銷57施加至刀片14之力 201236834 足以將該刀片扣持在該關閉位置，且即使在，例如，該刀 掉落時或受到一強力之“甩腕，，式移動時，該刀片亦不會開 啟。然而’包括一防止該刀片在刀片位於該關閉位置時開 啟之“安全”機構是有利的。 如前所述’在該墊圈中之内孔直徑大於該軸套8〇之外 徑。如第14圖所示，這使該等軸套80可延伸通過在組裝後 之刀中的墊圈。 由前述說明、由圖式及以下更詳細之說明可知，前述 軸套80可以任何多數等效結構來取代。舉例而言，該軸套 之功能與結構特性及它與該扭轉彈簀結合之方式可以利用 一成為該襯墊或握把之一體部份，而非一分離之構件之“軸 套”來重現。另一例是該握把可製成為一單一構件且該軸套 可以是該單件式握把半部之一部份。 圖式中之第10至13圖顯示一當該刀片14由該關閉位置 (第13圖）移動至該開啟位置（第1〇圖）時發生之序列操作。通 常’藉使用者施加壓力至拇指凸耳34來轉動該刀片。當轉 動刀片14時’該柄腳部份2 6之結構特徵的圓形凹部62轉 動。這使得與圓形凹部62相關之結構可以相對該固定軸套 80轉動，且這轉動在該刀片、該軸套及被扣持該軸套中且 一腿部固定於其上之彈簧之間產生該開啟輔助機構之功能 性操作。201236834 VI. INSTRUCTIONS: I: FIELD OF THE INVENTION The present invention relates to a folding knife provided with a mechanism for providing opening assistance for a blade, and in particular to a spring in which a spring acts on the blade The knife that drives the blade from the closed position to the open position. BACKGROUND OF THE INVENTION Most folding knives have a mechanism for holding a blade or working tool in a closed position, and in this closed position, the sharp edge of the blade is securely held within the grip. There are a number of conventional mechanisms for holding the blade in the closed position, and there are various reasons why these mechanisms are used, and for other reasons, the blade holding mechanism prevents accidental opening of the knife and thus improves safety. . The automatic opening mechanism and the so-called "opening aid" mechanism can be incorporated into the folding knife. Generally, in a knife having an automatic opening mechanism, the blade is held in a closed position by a locking trigger mechanism. When closed, the blade is attached to a fixed "preload" pressure from a spring mechanism. When the trigger is released, the blade is automatically driven to the open position by the magazine. On the other hand, in a knife having an opening assist mechanism, the blade is held in the closed position and does not require a catch or trigger. The opening assist function is provided by a spring mechanism that operates on the blade, and when the user manually turns the blade from the closed position to the open position, the magazine mechanism acting on the blade reaches a critical point. The spring drives the blade to the open position after the blade has rotated beyond the critical point of 201236834. A knife provided with both an automatic and an opening assist mechanism typically includes a locking mechanism for locking the blade to open, and in many opening assisting knives, the same spring mechanism that drives the blade to open also holds the blade shut down. Opening the auxiliary mechanism has become very popular for a variety of reasons. For example, in an appropriate environment and for the appropriate user, there are many advantages derived from the assisted opening of the knife and many situations in which the automatic knife can be very useful. These usually include the case where the user has only one empty hand, but even in a knife that includes an automatic opening or opening assist mechanism, safety considerations force the blade to remain in the closed position until the user intentionally and intentionally the blade Move to the open position. For example, a mechanism that holds a blade closed can never be released when the knife is dropped. With the opening of auxiliary knives becoming more and more popular, many new institutions have been developed. However, there is always a need for a mechanism that provides an opening assist feature for the knife. SUMMARY OF THE INVENTION The present invention comprises a folding knife having an opening assist mechanism, and in a first illustrated embodiment, the mechanism of the present invention relies on a pair of torsion springs, and the pair of torsion springs are axially retained on the blade The shaft pin is in a pair of sleeves that are fixed relative to the knife grip. A spring and a sleeve are provided on each lateral side of the blade, and one of the legs of each magazine is fixed to the sleeve. The opposite leg of the spring spans over a pocket and the pocket is formed on the surface of the blade and axially surrounds the opening through which the blade shaft is inserted. When the blade is in the closed position, the torsion magazines are "loaded" but do not apply their forces 4 201236834 to the blade, but instead apply their forces to the fixed bushing. When the blade is rotated from the closed position toward the open position, the legs of the magazines rotate through and cooperate to form a structure on the sleeves to immediately transfer the spring pressure to the blade and drive the blade Open. When the blade is thereby rotated from the closed position toward the open position, the mechanism of the present invention rotatably drives the blade to the fully open position upon a predetermined point of rotation, or "critical" point, by the blade rotation. This is achieved by the pair of magazines, and the magazines act on the blade and thus apply sufficient rotational motion to the blade to enable the inertia to drive the blade to the fully open position. A locking mechanism locks the blade in the open position. When the blade is rotated from the open position to the closed position, the torsion springs will be loaded again, and once passed through a desired point of rotation, one of the legs of each spring moves into one of the pockets of the sleeve And the rotational force of the spring is transmitted by the blade to the fixed bushing so that the blade can stay in the closed position. The mechanism of the present invention can also be constructed to rely solely on a torsion spring that is structurally and functionally identical to the pair of magazines described above. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be better understood and its numerous objects and advantages will be apparent from the <RTIgt; BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a first illustrated embodiment of a knife having an opening assist mechanism of the present invention, and the blade of the blade of Figure 1 is in the locked open position. Fig. 2 is a side view of the blade shown in Fig. 1. Figure 3 is a side view similar to Figure 2, and the blade position shown is midway between the open 5 201236834 position and the closed position. Figure 4 is a side elevational view of the knife shown in Figure 3 showing the blade in a fully closed position. Figure 5 is an exploded perspective view of the knife of Figure 1 showing the selected components. Figure 6 is a perspective view of one of the torsion springs. Figure 7 is a perspective view of another relative torsion spring. Figure 8 is a perspective view of one of the bushings. Figure 9 is a perspective view of the shank portion of the blade showing the blade pocket portion in which a torsion spring is disposed. Figures 10 through 13 show schematically a series of structural steps that occur when the blade is rotated from the open position to the closed position. Figure 10 is a side, semi-schematic and cross-sectional view showing the structure of the automatic assist mechanism when the blade is in the fully open and locked position. Figure 11 is a side, semi-schematic and cross-sectional view showing the construction of the automatic assist mechanism when the blade has been rotated about 60 degrees from the fully closed position toward the open position. Figure 12 is a side, semi-schematic and cross-sectional view showing the construction of the automatic assist mechanism when the blade has been rotated about 40 degrees from the fully closed position toward the open position. Figure 13 is a side, semi-schematic and cross-sectional view showing the structure of the automatic assist mechanism when the blade is in the closed position. Figure 14 is a fragmentary top cross-sectional view of Figure 1 taken through the front portion of the grip showing the blade in the open position. Figure 15 is a cross-sectional view of the formalized top 6 201236834 taken through the same position as Figure 14, but showing the blade in the closed position. Figures 16 through 19 are a series of semi-schematic and half cross-sectional views showing the blade, torsion spring and bushing during a series of events occurring when the blade is rotated from the open position to the closed position. Figure 16 shows the structural configuration of the blades, torsion springs and bushings when the blade is in the open position. Figure 16 roughly corresponds to Figure 10. Figure 17 shows the structural configuration of the blades, torsion magazines and bushings when the blade is rotated about 120 degrees from the fully open position toward the closed position. Figure 17 roughly corresponds to Figure 11. Figure 18 shows the structural configuration of the blades, torsion springs and bushings when the blade is rotated about 140 degrees from the fully open position toward the closed position. Figure 18 roughly corresponds to Figure 12. Figure 19 shows the structural configuration of the blades, torsion springs and bushings when the blade is in the closed position. Figure 19 roughly corresponds to Figure 13. Figures 20 through 25 show another preferred embodiment of an opening assist mechanism of the present invention. More specifically, Fig. 20 is a perspective and partial cross-sectional view showing the selection structure of one of the opening assisting mechanisms of the present invention, and shows various components in an exploded view. Figure 21 is a perspective cross-sectional view showing the selective structure of the blade shown in Figure 20, showing the blade assembled with the side wall of a grip and the blade being in the closed position. Fig. 22A is a cross-sectional view showing the selection structure of the blade shown in Fig. 20, and the blade is in the fully open position. Figure 22B is a cross-sectional view of the knife shown in Figure 22A, and the blade turns 201236834 to an intermediate position between fully open and fully closed, and the leg of the spring engages the blade in a position to The blade is driven from the off to the on. Figure 22C is a cross-sectional view of the knife shown in Figures 22A and 22B with the blade in the fully closed position. Figure 23 is a plan view of the knife having the opening assist mechanism shown in Figure 20, and the proximal side wall is removed to expose the blade and the opening assist mechanism and the blade is in the closed position. Figure 24 is a plan view similar to Figure 23, but showing the blade in an intermediate position when it is moved from the opening to the closed position. Figure 25 is a plan view similar to Figures 22 and 23, but showing the blade in the fully open position. C. Embodiment 3 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A first illustrated embodiment of a folding knife 1 具有 having an opening assist mechanism of the present invention is shown in Figs. The folding knife 10 includes an elongated grip 12 and a "front" end pivotally coupled to the grip and at one end thereof, hereinafter referred to as the grip. Other relative direction terms correspond to this rule: the "back" or shank end of the grip is opposite the front end; the "upper" portion of the blade is a blunt non-working portion and the "lower" portion of the blade is sharpened The working part; "inside" or "inward" means the structural center of the knife, and the like. Figures 1 and 2 show the knife 10 and the blade 14 is in the open position. Figure 3 shows the blade in the middle of its rotation from the open position to the closed position, and in Figure 4, the blade is shown in a portion of the blade shown in dashed lines in a blade storage 8 201236834 slot The closed position, and the blade receiving groove is formed in the grip 12 and located between the side walls. An X-Υ-Ζ axis coordinate is displayed in the first! In the drawings, and the χ_γ plane is defined as a plane parallel to the plane defined by the grip 12 and the blade 14 - it moves in the Χ-Υ plane as the blade rotates between the closed position and the open position . The meander plane is the plane transverse to the χ_γ - the blade pivot pin extends longitudinally in the meandering plane. The blade 14 of the knife 10 of the present invention has a blade locking mechanism such that the blade can be securely locked in the open position to prevent the blade from moving out of its closed position. The blade locking mechanism will be described below. The grip 12 of the knife 10 includes a plurality of components, including a pair of oppositely disposed side wall segments generally indicated at 16, 18, and the side wall segments 16, 18 are parallel to each other and separated by a divider 20, while only shown in FIG. One of the dividers is 2〇. Each of the side wall sections 16 and 18 includes a spacer and an outer panel that are held in parallel with each other. In detail, the side wall 丨 6 is formed by the spacer 17 and the outer panel 19. Similarly, the side wall 18 is formed by the gasket 21 and the outer panel 23. The spacers 20 are cylindrical sleeves having an inner screw hole, and a plurality of screws 22 are screwed into the aforementioned inner screw holes. Thus, screws such as S-hai are attached to the spacers 17 and 21' of the side walls 16 and 18 to maintain the grip 12 in a connected relationship with the side walls 16 and 18 held in a separate relationship. The side wall sections 16 and 18 can be made of any suitable material such as a reinforced synthetic plastic; other suitable materials include metal, other plastics, wood, and the like. The side wall segments can be made in one or more pieces and, as in Fig. 1, can include a selective pocket clip 17 attached to the outer surface of the side wall 16 if desired. The blade 14 can be pivotally coupled to the grip 12 and adjacent to the front end of the grip, at the end of the 201236834, and the blade for use with the knife 10 can be of any conventional type. The blade shown in the drawings includes an elongate working portion, indicated at 24, and a tang portion, indicated at 26, and the blade 14 is pivotally coupled to a blade pin (described in more detail below). Grip 12. The working portion 24 generally includes a sharp edge 30 and a front edge 32, and a thumb operating lug 34 can be included in the blade 14 to assist in opening and closing the blade. The blade receiving groove 36 is formed between the side walls 16, 18 by means of the aforementioned screw 22, and the blade receiving groove 36 defines a slot in which the blade 14 is received when the blade 14 is moved to its closed position. . When the blade is in the closed position, the sharp edge 30 of the blade is securely held within the grip. The blade 14 is coupled to the grip 12 such that when the blade 14 is in its open position (Fig. 1), the working portion 24 of the blade extends away from the grip 12 and when the blade is in the open position or the closed position The tang portion 26 is located within the blade receiving slot 36 and between the pair of grip side walls. That is, the tang portion 26 is straight between the side walls 16 and 18 of the grip 12. The blade is pivotally coupled to the grip and the blade extends obliquely to the plane of the blade and forms a blade pivot. Referring to Figure #, the second shaft pin 28 is formed by a "cylindrical sleeve 44" and the sleeve 44 extends through a bore 40 formed in the liner 21 and an alignment aperture 42 formed in the liner (four). And the heel sleeve also extends through the stitching hole 46 through the shank portion 26 of the blade 14. In the pair of knives 10 of the assembly, the pivot hole 46 in the shank portion 26 of the cylindrical sleeve 44^14f is tightly and fixedly fitted, so that the socket is slid out relative to The blade and the plane of the side walls extend transversely to the blade of the 201236834 rotation axis. Thus, the sleeve 44 is axially aligned with the Z direction and transverse to the XY plane. Please continue to refer to Figure 5, the sleeve 44 One end has a lip portion 45, and the outer periphery of the lip portion 45 is knurled. The opposite ends of the sleeve 44 are received in the circular column recess 47 in each grip, and at the fifth Only one of the column recesses 47 is shown. A plurality of washers 50 are disposed between the blade 14 and the pads 17 and 21 such that the sleeve 44 extends through the loop. The opposite ends of a blade stop 48 are anchored at The holes formed in the outer plates 19 and 23 are a plurality of holes 52 and are fixed by screws 3 6 and 54 (only one of the column holes 52 is shown in Fig. 5), and the screw 38 shown in Fig. 5 A screw hole 39 screwed into the gasket 17--the same screw is screwed into the screw hole 39 in the lining 21. When the knife 10 is in the foregoing and various types shown in the drawing When the wire is combined with the divider, the opposite end of the cylindrical sleeve 44 is securely held in the column recess 47 and the knife is very stable. As previously mentioned, the knife 10 has a means for locking the blade The locking mechanism of the open position. Referring to Figure 5, the locking mechanism is generally indicated by the reference numeral 56 and is fully disclosed in U.S. Patent No. 6,574,869, the disclosure of which is incorporated herein by reference. In detail, the locking mechanism 56 used in the blade 10 of the present invention is the same as the locking mechanism shown in the drawings of Figures 14 to 17 of the patent No. 6,574,869 and described in the specification of the patent. It is understood that because the locking mechanism 56 does not form part of the present invention, not all components of the locking mechanism are shown or indicated in the figures by the symbols. However, the blade locking pin 57 is indicated therein; The knife grip and its opposite end extend through a 201236834 spring biased pin in the slot in the grip, and the pin 57 is in contact with the specialized surface of the shank portion 26 by the blade Lock on this open It should also be understood that there are many different types of locking mechanisms that can function well with the opening assist mechanisms described herein, including, for example, pad locks and lock back mechanisms. The knives 10 have an opening assist mechanism 60 that includes several components. The mechanism 60 will be generally described with reference to a number of figures, and its construction and operation will be described in detail with reference to the other figures. As shown in Fig. 9, the blade 14 The tang portion 26 has a circular recess 62 formed annularly around the aperture 46 and the blade pivot pin 28 extends through the aperture 46. The seat 62 defines a loop in the tang surface of the blade The recessed hole 'and the annular recessed hole can be formed by grinding the blade or when molding the blade. Thus, the recess has a seating surface 64 that is recessed below the surface 66 of the remainder of the tang portion 26. The first step portion 68 forms the outer peripheral edge of the base surface 64, and a pocket or groove 7 is formed in the recess 62 so that the groove is radiated axially outward from the center of the through hole 46. The groove 70 defines a portion of a cylinder such that its wall is curved. As described below, because the wall of the groove is curved, the spring legs that straddle the groove at some point during rotation of the blade can enter and exit the groove. A curved or inclined section 72 extends from one side of the groove 7 at the edge of the hole 46 and slopes upwardly - a small radial distance until the inclined section reaches the height of the base face 64. This inclined section 72 is not necessary for the reasons detailed below. Finally, the circular recess 62 includes a scalloped portion 74 extending a short radial distance from the outermost edge of the groove 7 and surrounding the circular recess, and the edge portion of the outwardly formed sector portion is defined A portion having a diameter larger than the remaining portion of the circular recess 62 is formed. 12 201236834 Although the 9th® hat is a knife, it is a blade.... For example, the structure shown in Fig. 9 is rotated axially with respect to the structure of the circular structure of the flute OISlrh_. In the figure, the lower-structure of the component-component is shown in the eighth and has an I-axis_. The sleeve 8G is a substantially circular (four) member Μ, and 86 and 88 are spaced apart from each other to form a flat portion 84 of the outer wall of the sleeve. The flat portions extend partially along the cylindrical wall 89 of the sleeve 8G. Determining the rest portion 85 of each flat portion. As described in detail below, the sleeve is inserted into a circular hole shaped in the lining, the circular hole having three corresponding to the axis a flat portion of the three flat portions 84, 86_. The three flat portions of the sleeve cooperate with the flat portions of the holes in the pads to secure the sleeve relative to the pad And thereby preventing the sleeve from rotating relative to the pad. The inner portion of the sleeve 80 defines a first diameter D1 in Fig. 8, and at the "closed, end 83" of the sleeve The hole defines a second diameter D2 that is smaller than D1, and the inner cylindrical wall 89 defines a height u. Finally, a first notch 9 and a first one are formed in the annular edge 94 of the cylindrical wall 89. a notch 92. The second notch 92 is smaller than the first notch 9〇, and the inner diameter of the inner hole in the washer 50 is larger than the outer diameter of the sleeve 80, so that the knife set Upon completion, the bushings extend through the stiffeners as detailed below. Referring now to Figures 6 and 7, there are shown two torsion springs 96 and 98 used in the opening assist mechanism 6A. The springs 96 and 98 are mirror images of each other and have a body length L2 that is slightly smaller than the height L1 of the cylindrical wall 89 of the sleeve 80 and a diameter D3 that is slightly smaller than the diameter D1 of the sleeve 80. The spring 96 is a left 13 201236834 The spring and the magazine 98 are - right-handed springs, it should be understood that there are many types of torsion springs that can be used in the present invention. The springs shown here have 98% of the parts and (8) Straight (four) (10) and flat linear type magazine, and the part (10) and the de-emulsion end. The following will be a bushing and a twist spring to illustrate the assembly of the opening assist mechanism, but 'from the shape (four) and the actual As shown in the figure, the opening assist mechanism relies on the bushing and the torsion spring on each side of the blade. However, the 'opening assist mechanism can be constructed according to the use of only one torsion spring. In other words, the turning The auxiliary _ structure can be (four) one on the lateral side of the blade The upper spring is the preferred embodiment, but a single spring mechanism is also suitable. Please refer to Fig. 5, the knife 10 is stored in the blade i 4 The circle on the opposite side is 1 concave. The springs 96 and 98 in the 卩62 are assembled. The legs 1 of each torsion spring are placed in the thin 9G of the shaft _, and the sleeve _ person passes the outline 17 The hole C' and the flat portions & 'turns smoothly to form a corresponding flat portion in the outline. The sleeve can be inserted through the hole 42 until the stop portion 85 abuts against the pad As far as the outer wall is concerned, as previously described, the flat portion of the shaft cooperates with the inclined portion of the aperture of the contact pad n to secure the sleeve relative to the liner. In other words, the sleeve (10) cannot be rotated. Since the diameter D2 of the sleeve (10) is smaller than the diameter (1) of the springs, the spring 98 is held inside the shaft _ and is held in the sleeve. The magazine 96 on the lateral side of the blade (4) is assembled in the same manner as the sleeve _ with the gasket 21, and the "outer" leg portion 100 of the magazine or the like is held in the notch 9 of the sleeve. Because the shaft: can not be rotated and the leg portion 1 of the spring is held in the notch 9 各 each spring = 201236834 The leg is fixed relative to the grip 12 . A cylindrical sleeve 44 is inserted through the bosses, the springs, and the blades, and the opposite ends of the sleeve are respectively retained in the column pits in the outer plates 19 and 23 of the grip side wall sections 16 and 18. Part 47 is inside. A scored outer lip on one end of the sleeve 44 prevents the sleeve from rotating relative to the grip, and it will be appreciated herein that because the sleeve 44 is axially inserted through the center of the spring, the sleeve acts as the sleeve The shaft of the spring. As previously mentioned, the body length L2 of the spring 96 is slightly less than the height L1 of the sleeve 8〇. When the knife is fully assembled and the two halves of the grip are screwed together, the sleeve 80, which is fixed relative to the grip 12 as described above, holds the innermost leg portions 102 of the springs 96 and 98 against the grooves 70 on either side of the blade. The inner annular edge 94 of the sleeve 8 is adjacent to the surface 64. »Month Referring to Figure 9, when the knives are assembled, and at least some of the blades are closed to open as detailed below, and the rotation of the springs 96 is at some point, the legs 102 of the springs 96 are located in the grooves. The slot 7 is in the middle. The length of the leg 1〇2 is greater than the length of the inclined section 72 of the circular recess 62 (for example, as shown in the closing), such that when the spring 96 is assembled with other related components, the end of the leg ι() 2 The portion K is applied to the point in the groove 7G that ends by the inclined section 72. When the spring % acts as a party-to-rotation torque—that is, when the spring is “loaded”, the inclined surface of the groove 70 is created in the z-plane—the force vector—that is, the intersection with the plane of the blade—the domain The force vector pushes the leg of the spring % away from the groove in the cylindrical recess 62 and away from the slit through the blade to the center t, in other words 'because the grooved bribe of the leg (10) is always inclined" In the Z-plane, the leg is pushed out toward the sleeve 80, and the inclined section 72 is provided so that the spring leg 1G2 can be completely down 15 201236834. The mechanical gap in the groove 70. As described above and as shown in the figure, the magazines 96 and 98 & flat line type I. The relative geometry between the spring leg and the edge of the groove 70 is important so that the spring leg can be moved "moved out of the t-groove. It should be understood here that the geometry described herein can be Modified and achieved the same functional characteristics. The S-solid sleeve 80 holds the leg 102 in the groove 70, but when the blade rotates and winds the spring, that is, when the spring is loaded The leg portion 102 slides along the annular edge 94 of the inner portion of the leg until the inner ridge 1 of the leg portion spans over the slanted side of the groove 7Q. When the rotation continues and the leg portions 1G2 face the sigma 9.2 When turning, 'by the inclined edge of the groove 7〇, the force vector is applied to the leg 102 in the direction of the 2 plane. When the leg 1〇2 is aligned with the missing 092 in the sleeve 8〇, the legs are Forced to enter the gaps very quickly. Although the legs 1〇2, such as shai, are moved into the gaps 92, the springs of the springs are immediately disengaged from the blade and transferred to the fixed position as previously described. On the sleeve, the opening assist mechanism 60 will be described in detail below with the blade 14 in the closed position (for example, Figures 4, 13 and 15). Operation. When the blade 14 is in the closed position, the opening assist mechanism 60 does not apply pressure to the blade. When the blade is in the closed position, the springs 96 and 98 are twisted and loaded with load. However, their rotational force is applied to the fixed bushings 80 through the legs 1〇2. Therefore, the opening assist mechanism 60 does not apply pressure to the blade and the force applied to the tang of the blade by the locking mechanism 56 is The blade is held in the closed position. The details of the locking mechanism 56 are fully disclosed in U.S. Patent No. 6,574,869. The force applied to the blade 14 by the pin 57 is 201236834 sufficient to hold the blade in the closed position, and Even when, for example, the knife is dropped or subjected to a strong "wrist," the blade does not open. However, it is advantageous to include a "safe" mechanism that prevents the blade from opening when the blade is in the closed position. As previously mentioned, the diameter of the inner bore in the washer is larger than the outer diameter of the sleeve 8〇. As shown in Figure 14, this allows the sleeves 80 to extend through the gasket in the assembled knife. From the foregoing description, from the drawings and the following detailed description, the above-described bushing 80 can be replaced by any of the many equivalent structures. For example, the function and structural characteristics of the bushing and its manner of engagement with the torsion magazine can be weighted by a "sleeve" that is a part of the pad or grip rather than a separate member. Now. In another example, the grip can be made as a single member and the sleeve can be part of the one-piece grip half. Figures 10 through 13 of the drawings show a sequence of operations that occur when the blade 14 is moved from the closed position (Fig. 13) to the open position (Fig. 1). Typically, the blade is rotated by the user applying pressure to the thumb lug 34. When the blade 14 is rotated, the circular recess 62 of the structural feature of the tang portion 26 is rotated. This allows the structure associated with the circular recess 62 to be rotated relative to the fixed bushing 80, and this rotation is created between the blade, the bushing and the spring that is held in the bushing and a leg is secured thereto. The functional operation of the opening assist mechanism.
請參閱第13圖，如前所述’藉鎖定機構56之銷57的向 前壓力，所示之刀片14被扣持在這關閉位置。如此，銷57 受到彈簧張力作用，將該銷朝向前之方向推動，如箭號A 17 201236834 所示。彈簧98之腿部100—直被固持在軸套8〇之缺口 9〇中且 保持不動’並且藉在該軸套上之平坦部份與對接該轴套延 伸通過該襯墊21之孔中之平坦部份，軸套8〇保持不動。在 第13圖中，彈簣98被捲繞起來且因此具有有效的位能。但 是，腿部102位在缺口 92中且該彈簧之位能因此施加在該固 定軸套80上並且不會對該刀片14施加任何轉動壓力（即，在 X-Y平面中），但是在z平面方向上有一藉缺口92之彎曲邊緣 施加在該刀片上的力。 請參閱在該序列操作中之下一圖，第12圖，該刀片已 開始朝該開啟位置（箭號B)轉動。在此，彈簀98之腿部1〇2 仍在缺口 92中。因此，該彈簧之位能尚未釋放出來且仍施 加在軸套80上。同時，當該銷跨置在該刀片之柄腳上時， 該銷57已被向後推向該握把12之柄端。因為缺口 92之側邊 是彎曲的，所以該腿部102—直抵靠在一彎曲表面上。這與 先前對跨置在溝槽70中腿部1〇2所述之機械特性相同，因 此’因為該彈簧對該缺口之側邊施加有效之壓力，所以有 一在該Z平面方向上將該腿部朝向該刀片之柄腳之方向推 動一即，脫離缺口 92。這在該腿部1〇2與在該Z平面中之刀 片之間施加某壓力，但這不是將驅動該刀片開啟的轉動壓 力。 在第11圖中’該刀片已朝圖中之逆時針方向轉動，使 得腿部102剛好位在被迫脫出軸套8〇中之缺口 92的臨界 點。當腿部102被迫脫出缺口 92時，該腿部立即移入且結合 溝槽70。由於該彈簣被捲繞且被加上負載，該彈簧腿部移 18 201236834 入/冓槽70將使位能立即由該固定軸套8〇傳送至該可轉動刀 片14 °如此’當該彈簧解捲時，該彈簧立即將它的力施加 至該刀片’以將該刀片快速地推至該開啟位置。 在第10圖中’所示之刀片係位在該開啟與鎖定位置。 在這位置，在5亥刀片之柄腳上的一邊緣抵靠銷48，而這將 使》玄刀片停止轉動。藉橫向延伸通過該柄腳上緣且楔插於 握把側壁與該刀片之間的銷57，將該刀片鎖定。在第1〇圖 中可看到腿部1〇2放置在溝槽7〇中，且已由缺口92朝圖中之 逆時針方向轉動。理想地，彈簧98仍在該刀片上施加壓力， 以維持這位置。 囘你闯鮮貝不刀片位在該開啟位置之 刀10’且該圖係—通過該刀片連接於該握把處之握把與刀 片之-部份的放大橫截面圖。由於刀片14位在該開啟位 置，_%與98之腿部服放置於形成在柄腳部份26兩側中 之圓形凹部62的溝槽7G内。料彈簧被軸_之内環狀邊 緣94保持在料溝_，且在位置時，料彈料與98仍 =繞或被加上負載，所以它們會繼續在該刀片上施 力且因此迫使該刀片抵靠該止擔銷48。圖中可看 :兩彈簧之固定腿部刚被固持料套•細 然缺口 92未被佔據。因為當該刀 〒 田 彈簧繼續對該刀片施加壓力， 該開啟位置時該等 的鎖定。這種情形與在該刀片轉機構可確保確實 開啟但並未對該刀片施加壓力的，點後驅動該刀片 相同I 4夕開啟輔助機構是大不 19 201236834 第15圖類似於 夕„1Λ 、弟14圖’但它顯示刀片14位在關閉位釁 0在此，全岁望。外 —八i>L 寺每黃96與98被完全捲繞且因此以位能 元全地加上負載。 ^r，u Λ 疋，在這位置時，該等腿部102已被迫 興刀片14分離且 ^ 此停留在缺口 92中並且在此處，它們對 该固疋轴_施加它們的位能。 在此應了解的θ a 機構可^該刀片位在該開啟位置時，該鎖定 龄狡知 °Λ刀片可轉動至該關閉位置。當該刀片由開 啟:移動至關閉主 W時所發生之事件之順序係以第關至第_ 一系列之圖來顯示 „ ‘’…、。首先，請參閱第10圖，藉使鎖定機構 56之銷向後朝該 丹 议# <柄端移動，使得該銷與該刀片脫離而 將该刀片解鎖。接# a 絲4 有’使該刀片朝第10圖中之順時針方向Referring to Figure 13, the blade 14 is shown held in this closed position by the forward pressure of the pin 57 of the locking mechanism 56 as previously described. Thus, the pin 57 is subjected to spring tension to push the pin in the forward direction as indicated by arrow A 17 201236834. The leg portion 100 of the spring 98 is held straight in the notch 9〇 of the sleeve 8〇 and remains stationary' and the flat portion of the sleeve extends through the hole of the gasket 21 through the flat portion of the sleeve For the flat part, the sleeve 8〇 remains stationary. In Fig. 13, the magazine 98 is wound up and thus has an effective potential energy. However, the leg portion 102 is located in the notch 92 and the position of the spring can thus be applied to the fixed bushing 80 without applying any rotational pressure to the blade 14 (ie, in the XY plane), but in the z-plane direction. There is a force exerted on the blade by the curved edge of the notch 92. Refer to the next figure in the sequence of operations, Figure 12, the blade has begun to rotate toward the open position (arrow B). Here, the leg 1〇2 of the magazine 98 is still in the notch 92. Therefore, the position of the spring has not yet been released and is still applied to the sleeve 80. At the same time, when the pin is placed over the tang of the blade, the pin 57 has been pushed rearwardly toward the shank end of the grip 12. Because the sides of the notches 92 are curved, the legs 102 are placed against a curved surface. This is the same as previously described for the leg 1〇2 spanning in the groove 70, so 'because the spring exerts an effective pressure on the side of the notch, there is a leg in the Z-plane direction The portion is pushed toward the tang of the blade, i.e., away from the notch 92. This applies a certain pressure between the leg 1〇2 and the blade in the Z plane, but this is not the rotational pressure that will drive the blade open. In Fig. 11, the blade has been rotated counterclockwise in the drawing so that the leg portion 102 is just at the critical point of the notch 92 that is forced to escape from the sleeve 8. When the leg 102 is forced out of the notch 92, the leg immediately moves into and engages the groove 70. Since the magazine is wound and loaded, the spring leg is moved 18 201236834. The entry/slot 70 will enable the position to be immediately transferred from the fixed sleeve 8 to the rotatable blade 14°. Upon unwinding, the spring immediately applies its force to the blade 'to push the blade quickly to the open position. The blade shown in Fig. 10 is in the open and locked position. In this position, an edge on the shank of the 5 kel blade abuts the pin 48, which will cause the singular blade to stop rotating. The blade is locked by a pin 57 extending laterally through the upper edge of the tang and wedged between the side wall of the grip and the blade. It can be seen in the first figure that the leg 1〇2 is placed in the groove 7〇 and has been rotated counterclockwise from the notch 92 in the figure. Ideally, the spring 98 still exerts pressure on the blade to maintain this position. Returning to the knife 10' where the blade is in the open position and the figure is an enlarged cross-sectional view of the portion of the grip and the blade that is attached to the grip by the blade. Since the blade 14 is in the open position, the leg portions of _% and 98 are placed in the groove 7G formed in the circular recess 62 in both sides of the tang portion 26. The material spring is held in the groove by the inner annular edge 94 of the shaft, and in position, the material and 98 are still around or loaded, so they will continue to apply force on the blade and thus force the The blade abuts the stop pin 48. As can be seen in the figure: the fixed legs of the two springs have just been held by the sleeve. The fine notches 92 are not occupied. Because when the knife field spring continues to apply pressure to the blade, the opening position is locked. In this case, the blade turning mechanism can ensure that it is actually opened but does not exert pressure on the blade. After the point is driven, the blade is the same as the opening mechanism. The auxiliary mechanism is large. 19 201236834 The 15th picture is similar to the evening „1Λ, brother 14 Figure 'But it shows that the blade 14 is in the off position 衅0 here, the whole age is expected. The outer-eight i>L temple is completely wound every 96 and 98 and therefore the load is fully loaded with the bit energy. ^ r, u Λ 疋, in this position, the legs 102 have been forced to separate the blades 14 and remain in the gaps 92 where they apply their potential energy to the solid axis. The θ a mechanism that should be understood is that when the blade is in the open position, the locking age can be rotated to the closed position. When the blade is turned on: the event occurs when the main W is turned off. The sequence shows „ ''..., from the first to the _th series. First, referring to Fig. 10, if the pin of the locking mechanism 56 is moved rearward toward the shank end, the pin is disengaged from the blade to unlock the blade. Connect # a wire 4 has 'to make the blade clockwise in Figure 10
轉動（即，相對箭號R 之方向）。當這種情形發生時，該腿部 被溝槽70之邊緣推動，藉此捲繞彈簧98。 & » 4刀 >；繼續_時針方向轉動時，該彈簧繼續被捲 、免或加上負載’對該彈簧賦與更大的位能。在第11圖中， °亥腿部102仍位在溝槽70中，但該腿部1〇2之位置正接近該 腿。P對齊缺口92之點。在第12圖中，該腿部1〇2已與缺口 ％ 對齊且該腿部102被迫由溝槽7〇進入缺口 π，藉此將該彈簧 壓力由該刀片傳遞至該軸套。使腿部1〇2可以被迫由該溝槽 70進入缺口 92之主要結構是該溝槽7〇之傾斜側邊，該等傾 斜側邊會在z平面中使腿部朝缺口 92“舉起，，。該傾斜段72亦 有助於產生在z平面中迫使腿部移動且進入缺口 92的“舉 起’動作，但如前所述，傾斜段72之主要功能是使腿部1〇2 可以完全放置在該溝槽70中。 20 201236834 在第13圖中，可以看到腿部102在缺口 92中。因此，該 刀片自由地轉動進入該關閉位置。如前所述，施加至鎖定 機構之彈簣壓力將該機構之銷向前推，將該刀片扣持在該 關閉位置。 以下請參閱第16至19圖之一系列圖，這些圖包含一系 列依序顯示該開啟輔助機構之結構與功能特性的半示意 圖。在這一系列圖中，僅顯示之組件為該等軸套80、該等 彈簧96與98之腿部102、及一小部份刀片14。這些圖是半示 意圖，因為它們省略在這些視圖中通常可以看到之某些結 構以便清楚顯示。此外，如前所述，在該刀片各側上之圓 形凹部62中的結構係互相相對地軸向轉動。換言之，在該 刀片一側上之溝槽70與在該刀片相對側上之溝槽70不在相 同位置上。該等結構之相對轉動的主要原因是要維持該刀 片之強度與完整性，但是就此點而言，如果這些橫截面圖 準確地構成，則事實上並非所有在第16至19圖中所示之結 構均可被看到。但是，它們在此以所示之方式呈現以便詳 細說明本發明及它如何操作。 首先，請參閱第16圖，刀片14位於該開啟位置。兩彈 簧(96與98)被扣持在溝槽70中，因為該等軸套80之内環狀邊 緣94被固持成緊密地抵靠該刀片之柄腳部份26的表面。該 等彈簧被稍微加上負載，且該等彈簧施加至該刀片之力的 方向係以箭號A顯示。箭號B表示力施加至刀片14，使它由 該開啟位置朝該關閉位置移動之向量方向。在這刀片開啟 位置，缺口92未被佔據。 21 201236834 在第17圖中，該刀片已開始由該開啟位置朝該關閉位 置轉動。當這種情形發生時，該等彈簧96與98被捲繞一被 加上負載。即，當該刀片轉動（以箭號B表示一對應於第10 圖至第13圖之視圖中該刀片之順時針轉動）時，該等腿部 102被該等溝槽70承載與推動，以捲繞該等彈簧。缺口92仍 未被佔據，但是該等缺口之位置正接近該等腿部102之位 置。 在下一個序列圖之第18圖中，由於刀片14繼續朝箭號B 表示之方向轉動，所以此時缺口 92已轉動至該等缺口開始 對齊該等彈簧之腿部102的點，且該等腿部102同時在該Z 軸之方向上被溝槽70之彎曲側邊“舉起”一以箭號C表示。一 旦該等腿部102可以被收納在缺口 92中，它們便被溝槽70之 彎曲側邊推入該等缺口且該彈力（箭號A)立即由該刀片14 被傳遞至該軸套80。在此時，該刀片未受到由該開啟輔助 機構所施加之力的作用且因此可自由轉動至該關閉位置。 當一如前述之鎖定機構與該刀一起使用時，該橫向銷57在 此時推動該刀片以繼續朝該關閉位置移動。 在這序列之最後圖，即第19圖中，該刀片14位在該關 閉位置且沒有由該等彈簧96與98施加至該刀片之彈力。如 前所述，彈簣96與98受到有效之位能作用，但該能量（箭號 A)被僅導向轴套80。該等腿部102係在放置於該等圓形凹部 62之向外形成扇形部份74的位置處。 由前述說明可了解參照第1至19圖說明之開啟輔助機 構可應用於多種其他等效機械構造，且如前所述，可了解 22 201236834 軸套80可以省略且以任何用 握把之錢雜轉彈簧與該襯塾或 可被任γΓ 此方式，軸套8何被視為一 以執〜:行該功能之等效結構來取代，且有許多可 構等效結構。舉例而言，由該_定之結 例中Γ握把之—體部份而不是如在較佳實施 π Μ㈣H該軸套可以用—形成在該概 菁凹縣代，域凹部係用以包含該彈簧、固定一彈 以由定-缺口。另—彈簧腿部可置於該缺口中， 片移轉錢力並將該彈簧壓力傳輕該襯墊。 :為:容時，在此所使用之用語、… 該脸之結構，而是應被解讀成可包含有助於達成 套在此所具有之功能的任何結構。 本發明之具有一開啟輔助機構之析叠刀的第一所 不貫施例係顯示在第2〇至25圖中。只顯示折疊刀糊之選擇 結構部件以便說明大致以符號2G2表示之刀片開啟輔助機 構，所屬技術領域中具有通常知識者可輕易了解的是以上 刀U)之說明可以其财式完全地應料刀膝在第2〇至25 圖中，刀包括-長職把綱，及—在該握把之前端拖 轉地附接在該握把上之刀片2〇6。該握把2()4包含相對側壁 208與 210(第 22A、22B與 22C 圖）。 在第謝只顯示側壁208以便顯示刀片開啟輔助機 構202之組件。握把側壁208之内表面212包括一第一凹部 214,且該第-凹部214與使用—刀片鎖定機構之多數彈菁 及其他組件（未顯示）聯結，並且該刀片奴機構不是本發明 23 201236834 之標的。緊臨該第一凹部214前方的是一圓柱形凹部]^， 且該圓柱形凹部216界定一用以收納該軸套218之座部，並 且該軸套218係如下所述地扣持一彈簧22〇。圓柱形凹部 包括具有-螺紋内孔224之-圓㈣内螺樁222，且該螺紋 内孔224之中央軸界定當刀片2〇6在該等開啟與關閉位置之 間移動時刀片206環繞之樞軸的軸。如以下所詳述，—樞軸 嫘絲2 2 6具有一螺紋遠端22 8。在組合之刀中，軸套2丨8與樞 軸嫘絲226延伸穿過在刀片206中之樞轉孔23〇，且該樞軸螺 絲之嫘紋遠端228係螺入内孔224中以扣持定位軸套218 ;如 卞所述，該枢軸螺絲與該軸套均不會扣持定位該刀片2〇6於 该振把中，除非該軸套延伸穿過在該刀片中之樞轉孔。圓 柊形四部216包括一溝槽232，且該溝槽232由該樞軸螺絲 2^6向外韓射且組配來收納彈餐220之一腿部。一可分離擔 鎖231係設置在凹部216正上方。 彈簧220是一結構及功能均類似於先前說明之彈簧96 與98的扭轉彈簧。因此’彈簧220具有一本體長度L2及一直 德p3 (a玄荨尺寸L2及D3未顯不在第20圖中而是對應於第7 圖中L2及D3所示之相同尺寸）。彈簧22〇是一如上所述之扁 命線型彈簀且具有筆直腿部100與102 ’且該等筆直腿部1〇〇 與102界定由通過該彈簣之本體之軸向外輕射之彈箸端。 請繼續參照第20圖之分解圖，軸套218是具有一圓柱形 採體本體側壁之一殼體，且該殼體在一端具有一凹環形架 234及一中央軸孔236，並且該中央軸孔236通過該環形架進 八該殼體之内部。該軸套218之内部係開放的以收納及扣持 24 201236834 該彈簧220。在該組合刀中抵靠握把側壁208之軸套218端部 包括一舌片238，且該舌片238被收納在凹部216中之一具配 合形狀的缺口（未顯示）中。應了解的是當該軸套完全插入該 凹部216中且舌片23 8被收納在該缺口中時，該軸套被固定 且無法相該握把轉動。軸套218之直徑只稍小於穿過刀片 206之樞轉孔230及凹部216之直徑使得該軸套在組裝時可 插穿過該刀片且被收納在該凹部中，且在其間具有緊密公 差。 一部份環形溝槽240係圍繞該軸套殼體之長度之中途 形成在該軸套218之側壁中且完全延伸穿過該側壁進入該 軸套之開放内部中。因為如第20與23至25圖中所見，該溝 槽只部份延伸環繞該圓柱形軸套之圓周，最好在大約18〇至 225度，所以該溝槽在此有時被稱為一“部份環形溝槽，，。該 溝槽之寬度最好沿其長度是相同的，但是在該溝槽之一 端，一溝槽延伸部2462以一與該溝槽橫交之方向開展以界 定一擴大部份。請特別參閱第20圖，可看見溝槽延伸部246 之側壁是傾斜的一這傾斜側壁被稱為傾斜側壁242。 如上所述’樞軸螺絲226之遠端具有螺紋。該樞軸螺絲 在近端具有一扁平圓盤244,及一在該等近與遠端之間的中 央部份247。 刀片206包括一缺口 250，且該缺口 250由該樞轉孔23〇 向外延伸並且組配成如下所詳述地有時在該刀片由開啟轉 動至關閉、由關閉轉動至開啟時收納彈簧220之腿部1〇〇。 <- 該腿部100在其上傾斜之該缺口 250的兩側壁；詳而古之， 25 201236834 如第20與21圖最佳地所示，缺口 250之第一側壁251及相對 第二側壁252由該缺口之下表面或底面254向上傾斜。以下 說明該傾斜側壁252之目的及功能。請參閱第21圖之特定 圖，缺口 250之第一側壁251係在該缺口之右側—該第二側 壁252係在該缺口之左側。 當擋銷231由握把側壁208移除時，先將軸套218部份地 插穿過在該刀片中之孔230且接著將彈簧220插入該軸套之 開放内部並且腿部1〇〇延伸穿過部份環形溝槽24〇且使得該 腿部100被收納在該刀片中之缺口 25〇中，藉此組合刀2〇〇與 刀片2〇6及開啟辅助機構202。接著使該刀片206、軸套218 及彈簧220對齊且對接握把側壁2〇8，並且該刀片係定向成 超過正常停止位置大約90度（即，該刀片相對該握把朝向 上）。在這位置時，彈簣22〇之腿部1〇2被插入缺口 232且該 彈簧係呈一鬆弛狀況。接著將該刀片向該關閉位置轉動且 將擋銷231螺入握把側壁208中；這捲繞該彈簧使得該彈簧 在該組裝刀中一直受到一固定彈簧張力。軸套218相對該握 把轉動使得舌片238被收納在凹部216中之配合缺口中。應 了解的是當彈簧220之腿部102在溝槽232中時，該腿部1〇2 係相對該握把側壁208固定，且由於該舌片238被收納在該 缺口中，該軸套係相對該握把固定。作為另一配置，該腿 部102可固定在該軸套218之一缺口上而不是該握把本身 上；該腿部102係相對該握把固定。在任一種方式中’在此 時枢轴螺絲226被插入軸套218中之中央軸孔236且該遠端 228螺入螺孔224中。當該枢軸螺絲被鎖緊時’在該樞軸螺 26 201236834 絲之近端之該扁平圓盤244被收納在該環形架234中。當該 軸套218被鎖緊時，部份環形溝槽24〇係被定位在由刀片2〇6 之柄腳部份262之外表面26〇界定的平面正下方。但是，在 該刀片中之缺口 250係相對外表面260之平面凹入柄腳部份 262，且如第21圖最佳地所示之缺口，缺口25〇通至且連通 在軸套218中之部份環形溝槽24〇。因此，當刀片2〇6由關閉 轉動至開啟，或由開啟轉動至關閉時，缺口 25〇係透過整個 轉動通至部份環形溝槽240。此外’亦如第21圖最佳地所 示，溝槽延伸部246延伸至在該刀片之外表面26〇之平面上 方之一高度。因此，當該刀片靠近且在該關閉位置中時， 彈簧220之腿部100可上升離開在該刀片中之缺口 25〇且靠 置在該刀片之外表面260上，如圖所示。 由檢視第20與21圖可了解的是在這組裝之階段，刀片 206只藉由彈簧220之腿部100相對握把側壁2〇8被扣持定 位，且该彈簧220之腿部1〇〇係延伸在該刀片之柄腳部份 之外表面260上且，例如，進入缺口 25〇或如第21圖所示， 靠置在外表面260上。換言之，雖然軸套218係以樞軸螺絲 226附接在握把側壁208上，但是該刀片206未直接附接在該 握把或該樞軸螺絲上。取而代之的是，該刀片只如前所述 地藉由彈簧220之腿部100之交互作用被固持定位。如同在 工業中典型的情形，在各種結構組件之間的製造公差相當 小。因此，即使沒有組裝該側壁210,當該刀片轉動時在該 刀片與該側壁208之間之晃動也非常小。如下所詳述，在該 刀片與該握把之間的這結構關係提供顯著之組裝好處。 27 201236834 當該刀片206與握把側壁208組裝時，該刀片移入該關 閉位置且擋銷231被安裝在該側壁中，如第21圖所示。由於 s亥刀片被扣持在位置，所以該開啟輔助機構可只以與該 刀片組合之握把204之一側壁208完全地操作。 以下將參照一連串第22A、22B、22C圖及第23、24與 25圖說明該開啟辅助機構202之操作，且從刀片206在第22A 與25圖所示之開啟位置開始。應先注意的是在第22a、22B 與22C圖中’該第二側壁210係以多數沿該刀之栓槽由一側 壁延伸至第一側壁208的螺絲（未顯示），及一插穿過該側壁 210且螺入枢軸螺絲226之近端的一螺絲263附接在第一側 壁208上。以下請參閱第25圖，當該刀片在該開啟位置時， 一在刀片206之柄腳部份262上之肩部266抵靠擋銷231使得 該刀片無法轉動通過（第25圖之)該開啟停止位置。如下所詳 述，在該開啟停止位置該彈簧220係“被加上負載，，且推抵該 刀片使知该刀片被固持在該開啟停止位置。（亦在這位置， 一刀片鎖銷264結合該刀片以防止其由該開啟停止位置向 該關閉位置之非故意移動。在圖中所示之包括刀片鎖銷264 的鎖定機構不是本發明之一部份。）在這開啟停止位置中， 彈簧220之腿部1 〇 〇被扣持在軸套218之部份環形溝槽240中 且延伸進入刀片206之缺口 250，並且因為該彈簧220被捲 繞，所以該腿部100以彈力推抵2〇5之側壁252。相對該刀片 所施加之這彈力將該刀片維持在該開啟（及鎖定、停止）位 置。如則所述，除了在該溝槽延伸部246以外，該部份環形 溝槽240係在由刀片2〇6之外表面施界定之平面下方。因 28 201236834 此田°玄刀片轉動時，該溝槽係在與缺口 250相同之高度 上。換言之，該溝槽係、沿該溝槽之全長通至且連通該缺口 250但是，在该溝槽延伸部246，該部份環形溝槽以〇通至 兩缺α 250及該柄腳之外表面26Q。這最佳地顯示在第22a 圖中。因此，在第22A與25圖之開啟位置中（及在下述之除 了 a亥關閉位置以外的所有刀片位置），該腿部1〇〇被部份環 形溝槽240扣持在缺σ25时。_側壁况是傾斜的，但是 腿4100無法跨上該斜面因為軸部被限制及扣持在該部 伤％:升/溝槽240中。應了解的是如上所述’當腿部⑽在溝 槽240中時，除了當該刀片關閉或接近關閉且腿部100靠置 在外表面2 6 G上時以外，該腿部沿刀片轉動之平面 一直施加 彈力在該刀片上。當該腿部1⑽在外表面26G上時，該腿部 以一與刀片轉動之平面橫交之方向施加在該刀片上。 先藉由解鎖可在使用中之任何鎖定機構(例如，請參閱 第24圖，鎖銷264向該刀握把之後端移動使得該刀片之柄腳 在該刀片轉動時脫離該鎖銷），刀片2〇6由第25圖之開啟、 佟止及鎖定位置移動。第24圖中之箭號Α顯示當該刀片由開 始向關閉移動時該刀片之轉動方向。當該刀片轉動時，彈 簧220之腿部100仍留在部份環形溝槽24〇中且該腿部推抵 在s亥刀片中之缺口 250的側壁252。又，該彈簧被捲繞使得 它在該刀片以箭號A之方向轉動時對該刀片之轉動提供阻 力。此外，該刀片以這方向之轉動進一步捲繞及施加負載 至該彈簧且因此增加由該彈簧施加在該刀片上之彈力。因 為部份環形溝槽240係在由刀片206之外表面260界定之平 29 201236834 面正下方’所以在該轉動狀態時該腿部100—直留在部份環 形溝槽240及缺口 250中。當刀片206之轉動繼續由開啟至關 閉，一起轉動之該刀片之缺口 250及該彈簧之腿部100最後 與在該轴套218中之溝槽延伸部246對齊。當該刀片轉動接 近該關閉位置時（由第22B圖開始且移動至第22C圖，及第23 圖），腿部100進入在部份環形溝槽240中之點使得該腿部 100可向上移動，沿傾斜側壁252且遠離該彈簧之本體並且 進入溝槽延伸部2462—亦即，該腿部在該傾斜側壁25〇上滑 動且接著向上到此時對齊之溝槽延伸部246的傾斜側壁 242。當該腿部1〇〇以這方向移動且當該刀片繼續轉動時， 該腿部被推上缺口 250之側壁252之傾斜表面，且進入溝槽 延伸部246。—旦該腿部已上升一足夠距離而進入溝槽延伸 部246，該腿部便在一直驅動該腿部朝向該開啟位置之該彈 簧的力作用下，在該刀片之外表面26〇上滑動，如第Η圖所 不。因為該腿部被如先前所述地固定在側壁2〇8上且無法轉 動之軸套218的溝槽延伸部撕限制，所以腿部刚無法再向 該開啟方向轉動超出第21圖所示之位置。 腿部1〇〇㈣部份環形溝槽24〇之一般或“靠置，，位置係 。玄腿被固持在該溝槽中之位置。因此，該彈箸22〇之靠置 位置係顯在第2〇圖中且構成該本體之該彈黃之所有捲圈 被固持成相當緊密地互相抵靠。因此，當該腿部係在外表 面260上方時’如第21圖所示，該轉簧之捲圈在該腿部⑽ ，動離開該靠置位置時互相稍微分開。因此，有—由該腿 #施加在该刀片之表面上—該腿部100通常被推向其靠置 30 201236834 位置-與刀片轉動之平面橫交的向下力。但是，一豆該腿 部呈現在外表㈣G上找位置’由該彈簧施加在該刀片上 之轉動彈力便因為該腿部如上所述地被溝槽延伸部246限 制而停止，因此所有轉動彈力施加在軸套218上。如上所 述，有一由腿部100施加在該刀片上之壓力；這力量有助於 該刀片在它如下所述地向該開啟位置故意地移動之前通常 均留在s玄關閉位置。當使用例如與鎖銷264聯結之一鎖定機 構時，a玄鎖銷(在第23圖之圖示中被未顯示之多數彈簣向前 驅動）將該刀片進一步扣持在該關閉位置中。刀片206係藉 由以與第24圖中之箭號a相反之方向轉動該刀片而由該關 閉位置移動至該開啟位置。當該刀片轉動時，腿部1〇〇在該 刀片之柄腳262之表面上滑動直到該缺口 250對劑腿部1〇〇 為止。一旦遠缺口 25晴齊腿部1〇〇，該腿部便相對該部份 環形溝槽240呈現其一般“靠置”位置且因此沿傾斜側壁252 向下移動並進入该缺口 250。當這發生時，腿部1〇〇對齊且 進入該部份環形溝槽240並且可自由“解捲”。因此，該腿部 100推抵缺口 250之側壁252且因為該腿部已進入該部份環 形溝槽並且被限制於其中’所以該彈簧在彈力作用下快速 地驅動該刀片進入該開啟、停止及鎖定位置。 如前所述，界定該開啟輔助機構202之結構組件讓該刀 片206可以只組裝兩側壁208、21 〇中之一側壁之方式附接在 該握把上且與該開啟輔助機構組裝。因此，當該刀如第21 圖所示地部份地組裝時’即使該刀片只被彈簧202之腿部 100固持定位，該開啟輔助機構亦可完全發揮作用。這提供 31 201236834 顯著製造及組裝經濟效益。詳而言之，當在兩握把側壁被 固結定位之前組裝時，可調整該開啟輔助機構及鎖定位 置。例如，在本發明之受讓人所擁有之美國專利第7,278,213 號令所述之播銷可用於快速調整一刀片之鎖定位置。當在 例如第2G@巾所示之具有該開啟輔助機構搬之—刀中使 用如揭露在該’213專利中之—播銷時，技師可以在組裝時非 常快速地調整刀操作及鎖定。此外，因為該刀片係以只附 接兩側壁中之-側壁之方式被固定定位，所以整個刀之組 裝由於組裝所有各種構件所需之人工熟練度明顯地降低而 更有效率。此外，如一連串之第22A、22B與22C圖令，該 螺絲263絲露於該刀之❹卜這讓—使用者可在仰響二 開啟輔助機構202之操作的情形下調整刀片晃動之量7 此’因為即使在移除側壁210時該腿部1〇〇亦扣持定位刀Z 裹，所以-使用者可在不使該開啟輔助機構分離之情 完全移除螺絲236。許多使用者需要藉由改變該刀開啟^ 度，或改變在該刀片與該握把之間的晃動來“客製化門 的刀。上述開啟輔助機構可在沒有拆解—複雜開啟輔 構之風險的情形下容許這種使用者客製化。 雖然本發明已透過一較佳實施例說明過了，但 所屬技術領域中具有通常知識者應了解本發明之精 界定之各種肢顺等效物。 胃專叫圍所 【圖式^簡單_說^明】 第1圖是本發明之一具有-開啟輔助機構之刀” 一 32 201236834 所示實施例的立體圖，且第i圖所示之刀的刀片係位於鎖定 之開啟位置。 第2圖是第1圖所示之刀的側面圖。 第3圖是類似第2圖之側面圖，且所示之刀片位在開啟 位置與關閉位置間之中途。 第4圖是第3圖中所示之刀的側面圖，顯示該刀片位在 完全關閉位置。 第5圖是第1圖之刀的分解立體圖，顯示所選擇之組件。 第6圖是其中一扭轉彈簧之立體圖。 第7圖是另一相對扭轉彈簧之立體圖。 第8圖是其中一軸套之立體圖。 第9圖是該刀片之柄腳部份的立體圖，顯示其中設有一 扭轉彈簧之刀片袋部。 第10至13圖半示意地顯示當該刀片由該開啟位置轉動 至該關閉位置時發生之U之結構性步驟。 第10圖是一側面、半示意與橫截面圖，顯示當該刀片 在完全開啟與鎖定位置時，該自動輔助機構之結構。 第11圖是-側面、半示意與橫截面圖，顯示當該刀片 已由該完全_位置_開啟位置轉動大約6 輔助機構之結構。 ° ^ 第^圖是—側面、半示意與橫截面圖，顯示當該刀片 已由該完全_位置朝該開啟位置轉動大約4 輔助機構之結構。 Μ自動 第13圖是_側面、半示意與橫截面圖，顯示當該刀片 33 201236834 在關閉位置時，該自動輔助機構之結構。 第14圖是通過握把之前方部份所截取之第1圖之形式 化頂橫截面圖，顯示該刀片位於該開啟位置。 第15圖是通過與第14圖相同之位置所截取之形式化頂 橫截面圖，但顯示該刀片位於該關閉位置。 第16至19圖是一連串半示意與半橫截面圖，顯示在該 刀片由開啟位置轉動至關閉位置時發生之一連串事件期間 的刀片、扭轉彈簧與軸套。 第16圖顯示當該刀片位於該開啟位置時，該等刀片、 扭轉彈簧與軸套之結構配置。第16圖大致對應於第10圖。 第17圖顯示當該刀片由該完全開啟位置朝該關閉位置 轉動大約120°時，該等刀片、扭轉彈簧與軸套之結構配置。 第17圖大致對應於第11圖。 第18圖顯示當該刀片由該完全開啟位置朝該關閉位置 轉動大約140°時，該等刀片、扭轉彈簧與軸套之結構配置。 第18圖大致對應於第12圖。 第19圖顯示當該刀片位於該關閉位置時，該等刀片、 扭轉彈簧與軸套之結構配置。第19圖大致對應於第13圖。 第20至25圖顯示本發明之一開啟輔助機構之另一較佳 實施例。詳而言之， 第20圖是顯示本發明之一開啟輔助機構之一刀之選擇 結構的立體及部份剖視圖，且以一分解圖顯示各種部件。 第21圖是第20圖所示之刀之選擇結構的立體橫截面 圖，顯示與一握把側壁組裝在一起之刀片且該刀片係在該 34 201236834 關閉位置。 第22A圖是第20圖所示之刀之選擇結構的橫截面圖，且 該刀片係在該完全開啟位置。 第22B圖是第22A圖所示之刀之橫截面圖，且該刀片轉 動至一在完全開啟與完全關閉之間的中間位置，並且該彈 簧之腿部在一位置結合該刀片以將該刀片由該關閉驅動至 開啟。 第22C圖是第22A與22B圖所示之刀之橫截面圖，且該 刀片係在該完全關閉位置。 第23圖是一具有第20圖所示之開啟輔助機構之刀的平 面圖，且該近側壁被移除以暴露該刀片及開啟輔助機構並 且該刀片係在該關閉位置。 第24圖是一類似第23圖之平面圖，但顯示該刀片在當 它由該開啟移動至該關閉位置時之一中間位置。 第25圖是一類似第22與23圖之平面圖，但顯示該刀片 係在該完全開啟位置。 【主要元件符號說明】 10...刀 20...分隔器 12…握把 22...螺絲 14...刀片 24...工作部份 16,18...側壁段 26...柄腳部份 17...袋部夾 28…刀片軸銷 17,21...襯墊 30...銳利邊緣 19,23...外板 32...無鋒邊緣 35 201236834 34.. .拇指操作凸耳 36.. .刀片收納槽；螺絲 38.. .螺絲 39…螺孔 40.42.. .孔 44.. .套筒 45.. .唇部 46.. .樞轉孔 47.. .柱坑凹部 48.. .刀片擋銷 50.. .墊圈 52.. .柱坑孔 54.. .螺絲 56.. .鎖定機構 57.. .刀片鎖銷 60.. .開啟輔助機構 62.. .凹部；座部 64.. .底座面 66…表面 68.. .階部 70.. .溝槽 72.. .傾斜段 74.. .向外形成扇形部份 80.. .軸套 81.. .孔 82.. .圓柱形構件 83.. .封閉端 84.86.88.. .平坦部份 85.. .止擋部 89.. .圓柱形壁 90.. .第一缺口 92···第二缺口 94.. .内環狀邊緣 96.98.. .彈簧 100.102.. .腿部 101.. .螺旋本體部份 200…刀 202.. .開啟輔助機構 204.. .握把 206…刀片 208.210.. .側壁 212.. .内表面 214.. .第一凹部 216.. .圓柱形凹部 218.. .轴套 220.. .彈簧 222.. .圓柱形内螺樁 224.. .螺紋内孔 36 201236834 226...樞轴螺絲 251...第一側壁 228...遠端 252...第二側壁 230...樞轉孔 254...下表面或底面 231...擋銷 260...外表面 232...溝槽 262...柄腳部份 234...環形架 263...螺絲 236...中央軸孔 264...鎖銷 238··.舌片 266...肩部 240...部份環形溝槽 A··.箭號(方向） 242...傾斜側壁 D1...第一直徑 244...扇平圓盤 D2...第二直徑 246...溝槽延伸部 D3...直徑 247...中央部份 L1...高度 250…缺口 L2...本體長度 37Rotate (ie, relative to the direction of the arrow R). When this occurs, the leg is pushed by the edge of the groove 70, thereby winding the spring 98. & » 4 knives >; Continue _ when the clockwise rotation, the spring continues to be rolled, free or load ‘ to give the spring a greater potential. In Fig. 11, the ° leg portion 102 is still in the groove 70, but the position of the leg 1〇2 is approaching the leg. P aligns the point of the notch 92. In Fig. 12, the leg 1〇2 has been aligned with the notch % and the leg 102 is forced into the notch π by the groove 7〇, whereby the spring pressure is transmitted from the blade to the sleeve. The primary structure that allows the leg 1〇2 to be forced into the notch 92 by the groove 70 is the inclined side of the groove 7〇, which will lift the leg toward the notch 92 in the z-plane. The inclined section 72 also helps to create a "lift" action that forces the leg to move in the z-plane and into the notch 92, but as previously discussed, the primary function of the inclined section 72 is to make the leg 1〇2 It can be placed completely in the groove 70. 20 201236834 In Fig. 13, it can be seen that the leg 102 is in the gap 92. Therefore, the blade is free to rotate into the closed position. As previously mentioned, the magazine pressure applied to the locking mechanism pushes the pin of the mechanism forward and holds the blade in the closed position. Please refer to the series of figures 16 to 19 below, which includes a series of semi-schematic diagrams showing the structural and functional characteristics of the opening assist mechanism in sequence. In this series of drawings, only the components shown are the bushings 80, the legs 102 of the springs 96 and 98, and a small portion of the blade 14. These figures are semi-intent because they omit certain structures that are commonly seen in these views for clarity. Moreover, as previously discussed, the structures in the circular recesses 62 on each side of the blade are axially rotated relative to one another. In other words, the groove 70 on one side of the blade is not in the same position as the groove 70 on the opposite side of the blade. The main reason for the relative rotation of the structures is to maintain the strength and integrity of the blade, but in this regard, if these cross-sectional views are accurately constructed, not all of them are actually shown in Figures 16-19. The structure can be seen. However, they are presented herein in a manner to illustrate the invention and how it operates. First, referring to Fig. 16, the blade 14 is in the open position. The two springs (96 and 98) are held in the groove 70 because the inner annular edge 94 of the sleeve 80 is held tightly against the surface of the shank portion 26 of the blade. The springs are slightly loaded and the direction of the force applied by the springs to the blades is indicated by arrow A. Arrow B indicates the direction in which the force is applied to the blade 14 to move it from the open position toward the closed position. In this blade open position, the gap 92 is unoccupied. 21 201236834 In Figure 17, the blade has begun to rotate from the open position toward the closed position. When this occurs, the springs 96 and 98 are wound one by a load. That is, when the blade is rotated (arrowwise B indicates a clockwise rotation of the blade in the view corresponding to Figures 10 to 13), the legs 102 are carried and pushed by the grooves 70 to Wind the springs. The notches 92 are still unoccupied, but the locations of the indentations are approaching the positions of the legs 102. In Figure 18 of the next sequence diagram, as the blade 14 continues to rotate in the direction indicated by arrow B, the notch 92 has now rotated to the point where the indentations begin to align with the legs 102 of the springs, and the legs The portion 102 is simultaneously "lifted" by the curved side of the groove 70 in the direction of the Z axis by an arrow C. Once the legs 102 can be received in the notches 92, they are pushed into the indentations by the curved sides of the grooves 70 and the spring force (arrow A) is immediately transmitted by the blade 14 to the sleeve 80. At this time, the blade is not subjected to the force applied by the opening assist mechanism and thus is free to rotate to the closed position. When the locking mechanism as described above is used with the knife, the transverse pin 57 urges the blade at this point to continue moving toward the closed position. In the final view of the sequence, Fig. 19, the blade 14 is in the closed position and there is no spring force applied to the blade by the springs 96 and 98. As previously described, the magazines 96 and 98 are subjected to an effective potential, but the energy (arrow A) is directed only to the sleeve 80. The legs 102 are placed at positions where the scalloped portions 74 are formed outwardly of the circular recesses 62. It can be understood from the foregoing description that the opening assist mechanism described with reference to Figures 1 to 19 can be applied to a variety of other equivalent mechanical configurations, and as previously described, it can be understood that 22 201236834 bushing 80 can be omitted and used in any grip. The rotating spring and the lining may be γ Γ. In this manner, the bushing 8 is considered to be replaced by an equivalent structure of the function, and has many structurable equivalent structures. For example, the sleeve portion of the gripping portion of the sleeve may be used instead of the sleeve portion as in the preferred embodiment π Μ (4) H. The pocket recess is used to contain the sleeve. The spring is fixed by a fixed-to-notch. Alternatively, the spring legs can be placed in the gap, the sheet shifting the force and transferring the spring pressure to the liner. :: Time, the term used herein, ... the structure of the face, but should be interpreted to include any structure that contributes to the function of the face. A first embodiment of the present invention having a stacking knife having an opening assist mechanism is shown in Figures 2 through 25. Only the selected structural components of the folding knife paste are shown to illustrate the blade opening assist mechanism generally indicated by the symbol 2G2, and those skilled in the art can easily understand that the description of the above knife U) can be completely applied to the blade. Knee In Figures 2 to 25, the knife includes a long-term handle, and a blade 2〇6 that is attached to the grip at the front end of the grip. The grip 2() 4 includes opposing side walls 208 and 210 (Figs. 22A, 22B and 22C). Only the side walls 208 are shown in the display to show the components of the blade opening assist mechanism 202. The inner surface 212 of the grip sidewall 208 includes a first recess 214, and the first recess 214 is coupled to a plurality of elastomers and other components (not shown) that use a blade locking mechanism, and the blade slave mechanism is not the invention 23 201236834 The subject matter. Immediately adjacent to the front of the first recess 214 is a cylindrical recess, and the cylindrical recess 216 defines a seat for receiving the sleeve 218, and the sleeve 218 holds a spring as follows. 22〇. The cylindrical recess includes a round (four) inner stud 222 having a threaded bore 224, and the central axis of the threaded bore 224 defines a pivot of the blade 206 as the blade 2〇6 moves between the open and closed positions. The axis of the shaft. As will be described in more detail below, the pivoting wire 2 26 has a threaded distal end 22 8 . In the combined knife, the sleeve 2丨8 and the pivoting wire 226 extend through the pivot hole 23〇 in the blade 206, and the ridge distal end 228 of the pivot screw is screwed into the inner hole 224 to buckle Holding the positioning sleeve 218; as described above, neither the pivot screw nor the sleeve will hold the blade 2〇6 in the vibrator unless the sleeve extends through the pivot hole in the blade . The circular four-shaped portion 216 includes a groove 232, and the groove 232 is outwardly projected by the pivot screw 2^6 and assembled to receive one of the legs of the meal 220. A detachable lock 231 is disposed directly above the recess 216. Spring 220 is a torsion spring having a structure and function similar to springs 96 and 98 previously described. Therefore, the spring 220 has a body length L2 and a straight line p3 (a metaphysical size L2 and D3 are not shown in Fig. 20 but correspond to the same size shown by L2 and D3 in Fig. 7). The spring 22〇 is a flat-line type magazine as described above and has straight legs 100 and 102' and the straight legs 1〇〇 and 102 define an axially outwardly projectile by the body of the magazine Extreme. Referring to the exploded view of Fig. 20, the sleeve 218 is a housing having a side wall of a cylindrical body, and the housing has a concave annular frame 234 and a central shaft hole 236 at one end, and the central shaft Aperture 236 is passed through the annular frame into the interior of the housing. The inside of the sleeve 218 is open to receive and hold 24 201236834 the spring 220. The end of the sleeve 218 that abuts the grip side wall 208 in the combination knife includes a tab 238 that is received in a correspondingly shaped notch (not shown) in the recess 216. It will be appreciated that when the sleeve is fully inserted into the recess 216 and the tab 23 8 is received in the recess, the sleeve is fixed and cannot be rotated relative to the grip. The diameter of the sleeve 218 is only slightly smaller than the diameter of the pivot hole 230 and the recess 216 that passes through the blade 206 such that the sleeve can be inserted through the blade and received in the recess with a tight tolerance therebetween. A portion of the annular groove 240 is formed in the sidewall of the sleeve 218 midway through the length of the sleeve housing and extends completely through the sidewall into the open interior of the sleeve. Since as seen in Figures 20 and 23 to 25, the groove extends only partially around the circumference of the cylindrical sleeve, preferably between about 18 ft and 225 degrees, so the groove is sometimes referred to herein as a "Partial annular groove, the width of the groove is preferably the same along its length, but at one end of the groove, a groove extension 2462 is developed in a direction transverse to the groove to define An enlarged portion. Referring specifically to Fig. 20, it can be seen that the side wall of the groove extension 246 is inclined. This inclined side wall is referred to as a slanted side wall 242. As described above, the distal end of the 'pivot screw 226 has a thread. The pivot screw has a flat disc 244 at the proximal end and a central portion 247 between the proximal and distal ends. The blade 206 includes a notch 250 and the notch 250 is outwardly defined by the pivot hole 23 Extending and assembling as described in detail below, the leg portion 1 of the housing spring 220 is sometimes accommodated when the blade is rotated from open to closed, from closed to open. <- The leg 100 is tilted thereon The two side walls of the notch 250; in detail, 25 201236834 as best shown in Figures 20 and 21 The first side wall 251 and the opposite second side wall 252 of the notch 250 are inclined upward by the lower surface or the bottom surface 254 of the notch. The purpose and function of the inclined side wall 252 are described below. Please refer to the specific figure of Fig. 21, the first of the notch 250 A side wall 251 is attached to the right side of the notch - the second side wall 252 is to the left of the notch. When the stop pin 231 is removed by the grip side wall 208, the sleeve 218 is first partially inserted through the blade. The hole 230 and then the spring 220 is inserted into the open interior of the sleeve and the leg 1〇〇 extends through the partial annular groove 24〇 and the leg 100 is received in the notch 25〇 in the blade, The combination knife 2 is coupled to the blade 2〇6 and the opening assist mechanism 202. The blade 206, the sleeve 218 and the spring 220 are then aligned and the side walls 2〇8 are butted, and the blade is oriented beyond the normal stop position. 90 degrees (i.e., the blade is oriented upwardly with respect to the grip). In this position, the leg portion 1〇2 of the magazine 22 is inserted into the notch 232 and the spring is in a relaxed condition. The blade is then closed. The position is rotated and the stop pin 231 is screwed into the grip side wall 2 In the 08; the winding of the spring causes the spring to be subjected to a fixed spring tension in the assembly knife. The sleeve 218 is rotated relative to the grip such that the tongue 238 is received in the mating notch in the recess 216. It should be understood that When the leg portion 102 of the spring 220 is in the groove 232, the leg portion 〇2 is fixed relative to the grip side wall 208, and since the tab 238 is received in the notch, the sleeve is opposite the grip As another configuration, the leg portion 102 can be secured to one of the sleeves 218 rather than the grip itself; the leg portion 102 is fixed relative to the grip. In either manner, 'in this case The shaft screw 226 is inserted into the central shaft bore 236 in the sleeve 218 and the distal end 228 is threaded into the threaded bore 224. When the pivot screw is locked, the flat disc 244 at the proximal end of the pivot thread 26 201236834 is received in the annular frame 234. When the sleeve 218 is locked, a portion of the annular groove 24 is positioned directly below the plane defined by the outer surface 26 of the shank portion 262 of the blade 2〇6. However, the notch 250 in the blade is recessed into the tang portion 262 relative to the plane of the outer surface 260, and as shown in Fig. 21, the notch 25 is passed to and communicated in the sleeve 218. Part of the annular groove 24〇. Therefore, when the blade 2 is rotated from off to on, or from on to off, the notch 25 is passed through the entire rotation to the partial annular groove 240. Further, as best shown in Fig. 21, the groove extension 246 extends to a height above the plane of the outer surface 26 of the blade. Thus, when the blade is near and in the closed position, the leg 100 of the spring 220 can rise away from the notch 25 in the blade and rest against the outer surface 260 of the blade, as shown. It can be understood from the inspection of Figs. 20 and 21 that at the stage of assembly, the blade 206 is only held by the leg portion 100 of the spring 220 relative to the grip side wall 2〇8, and the leg portion of the spring 220 is 〇〇 The extension extends over the outer surface 260 of the shank portion of the blade and, for example, into the notch 25 or, as shown in Fig. 21, rests on the outer surface 260. In other words, although the sleeve 218 is attached to the grip side wall 208 with a pivot screw 226, the blade 206 is not directly attached to the grip or the pivot screw. Instead, the blade is held in place by the interaction of the legs 100 of the spring 220 only as previously described. As is typical in the industry, manufacturing tolerances between various structural components are quite small. Therefore, even if the side wall 210 is not assembled, the sway between the blade and the side wall 208 when the blade is rotated is very small. This structural relationship between the blade and the grip provides significant assembly benefits as detailed below. 27 201236834 When the blade 206 is assembled with the grip side wall 208, the blade is moved into the closed position and the stop pin 231 is mounted in the side wall as shown in FIG. Since the s-blade is held in position, the opening assist mechanism can only be fully operated with one of the side walls 208 of the grip 204 that is combined with the blade. The operation of the opening assist mechanism 202 will now be described with reference to a series of 22A, 22B, 22C and 23, 24 and 25 drawings, and the blade 206 begins at the open position shown in Figs. 22A and 25. It should be noted that in the 22a, 22B and 22C drawings, the second side wall 210 is a plurality of screws (not shown) extending from a side wall to the first side wall 208 along the spigot of the knives, and is inserted through A side wall 210 and a screw 263 threaded into the proximal end of the pivot screw 226 are attached to the first side wall 208. Referring to Figure 25, when the blade is in the open position, a shoulder 266 on the shank portion 262 of the blade 206 abuts against the stop pin 231 so that the blade cannot be rotated (Fig. 25). Stop position. As described in more detail below, in the open stop position, the spring 220 is "loaded" and pushed against the blade to cause the blade to be held in the open stop position. (Also in this position, a blade lock pin 264 is coupled. The blade prevents unintentional movement of the blade from the open stop position to the closed position. The locking mechanism including the blade lock pin 264 shown in the figures is not part of the present invention.) In this open stop position, the spring The leg portion 1 of the sleeve 220 is held in a portion of the annular groove 240 of the sleeve 218 and extends into the notch 250 of the blade 206, and because the spring 220 is wound, the leg portion 100 is elastically pushed The side wall 252 of the second side 252. The spring force applied to the blade maintains the blade in the open (and locked, stopped) position. As described, except for the groove extension 246, the portion of the annular groove The groove 240 is below the plane defined by the outer surface of the blade 2〇6. Since the 28 201236834 is rotated, the groove is at the same height as the notch 250. In other words, the groove is along the edge. The full length of the groove leads to The gap 250 is communicated. However, at the groove extension 246, the portion of the annular groove opens to the two gaps α 250 and the outer surface 26Q of the shank. This is best shown in Fig. 22a. In the open position of the 22A and 25th drawings (and all of the blade positions except the a-closed position described below), the leg portion 1 is held by the partial annular groove 240 at the absence of σ25. It is slanted, but the leg 4100 cannot straddle the bevel because the shaft is constrained and held in this portion of the swell/groove 240. It should be understood that the leg (10) is in the groove 240 as described above. At the time, except when the blade is closed or nearly closed and the leg 100 rests on the outer surface 26 G, the leg exerts an elastic force on the blade along the plane of rotation of the blade. When the leg 1 (10) is on the outer surface 26G The leg is applied to the blade in a direction transverse to the plane of rotation of the blade. First, by unlocking any locking mechanism that can be used (for example, see Figure 24, the locking pin 264 is held to the blade) Moving the rear end such that the shank of the blade disengages from the lock as the blade rotates Pin), the blade 2〇6 is moved by the opening, closing and locking positions of Fig. 25. The arrow Α in Fig. 24 shows the direction of rotation of the blade when the blade is moved from the beginning to the closing. The leg portion 100 of the spring 220 remains in the partial annular groove 24 and the leg pushes against the side wall 252 of the notch 250 in the sigma blade. Again, the spring is wound such that it is at the blade The rotation of the blade provides resistance to rotation of the blade. Further, the blade is further wound in this direction and applies a load to the spring and thus increases the spring force exerted by the spring on the blade. The groove 240 is directly below the face of the flat 29 201236834 defined by the outer surface 260 of the blade 206 so that the leg 100 remains in the partial annular groove 240 and the notch 250 in this rotated state. As the rotation of the blade 206 continues from opening to closing, the notch 250 of the blade and the leg portion 100 of the spring are finally aligned with the groove extension 246 in the sleeve 218. When the blade is rotated close to the closed position (starting from Fig. 22B and moving to Fig. 22C, and Fig. 23), the leg 100 enters the point in the partial annular groove 240 so that the leg 100 can move upward. Along the inclined side wall 252 and away from the body of the spring and into the groove extension 2462 - that is, the leg slides over the inclined side wall 25 and then up to the inclined side wall 242 of the groove extension 246 aligned at this time . When the leg 1 is moved in this direction and as the blade continues to rotate, the leg is pushed up the inclined surface of the side wall 252 of the notch 250 and into the groove extension 246. Once the leg has risen a sufficient distance into the groove extension 246, the leg slides over the outer surface 26 of the blade under the force of the spring that drives the leg toward the open position. As the map does not. Since the leg is torn by the groove extension of the sleeve 218 which is fixed to the side wall 2〇8 as described above, the leg can no longer be rotated in the opening direction beyond the one shown in Fig. 21. position. The leg portion 1 (4) part of the annular groove 24 一般 generally or "abut, position. The black leg is held in the groove. Therefore, the position of the magazine 22 系 is prominent In the second drawing, all of the coils of the yellow body constituting the body are held to abut relatively close to each other. Therefore, when the leg is attached to the outer surface 260, the spring is as shown in Fig. 21. The loops are slightly separated from each other when the leg (10) is moved away from the abutment position. Therefore, there is - applied by the leg # on the surface of the blade - the leg 100 is normally pushed towards its abutment 30 201236834 position - a downward force transverse to the plane of rotation of the blade. However, the leg of the bean appears on the outer surface (four) G to find the position 'the rotational elasticity exerted on the blade by the spring because the leg is grooved as described above The slot extension 246 is restrained and stopped so that all rotational spring force is exerted on the sleeve 218. As described above, there is a pressure exerted on the blade by the leg 100; this force helps the blade to be as described below The open position is usually left in the s Xuan closed before deliberately moving When a locking mechanism such as one is coupled to the locking pin 264, a locking pin (which is driven forward by a plurality of magazines not shown in the illustration of Fig. 23) further holds the blade in the closed position. The blade 206 is moved from the closed position to the open position by rotating the blade in a direction opposite to the arrow a in Fig. 24. When the blade is rotated, the leg 1 is stalked at the blade The surface of the foot 262 slides until the notch 250 is facing the leg portion of the agent. Once the distal notch 25 is flushed, the leg presents a generally "recumbent" relative to the portion of the annular groove 240. The position and thus the downward movement along the inclined side wall 252 and into the notch 250. When this occurs, the leg 1〇〇 is aligned and enters the partial annular groove 240 and is free to "unwind". Thus, the leg 100 Pushing against the side wall 252 of the notch 250 and because the leg has entered the portion of the annular groove and is confined therein, the spring rapidly drives the blade into the open, stop and locked position under the action of the spring force. Describe the opening assistance mechanism 202 The structural component allows the blade 206 to be attached to the handle and assembled with the opening assist mechanism in such a manner as to assemble only one of the side walls 208, 21. Thus, when the blade is as shown in Fig. 21 When assembled in part, 'even if the blade is only held by the leg 100 of the spring 202, the opening assist mechanism can fully function. This provides significant manufacturing and assembly economic benefits of 31 201236834. In detail, when in the two grips The opening assist mechanism and the locking position can be adjusted when the side wall is assembled prior to consolidation. For example, the broadcast described in the U.S. Patent No. 7,278,213 to the assignee of the present invention can be used to quickly adjust the locking position of a blade. When used in a knife, such as the 2G@ towel, which has the opening assist mechanism, as disclosed in the '213 patent, the technician can adjust the knife operation and locking very quickly during assembly. Moreover, because the blade is fixedly positioned with only the side walls of the two side walls attached, the assembly of the entire knife is more efficient due to the significantly reduced manual proficiency required to assemble all of the various components. In addition, as a series of 22A, 22B and 22C commands, the screw 263 is exposed to the blade so that the user can adjust the amount of blade sway in the case of the operation of the raising of the secondary opening assist mechanism 202. This is because the user can completely remove the screw 236 without disengaging the opening assist mechanism even if the leg portion 1 扣 holds the positioning knife Z when the side wall 210 is removed. Many users need to "customize the door's knife by changing the knife opening degree or changing the sway between the blade and the grip. The above-mentioned opening assist mechanism can be used without disassembly - complex opening auxiliary This type of user is customized in the context of risk. Although the invention has been described in terms of a preferred embodiment, those of ordinary skill in the art should understand the various equivalents of the invention. The stomach is called the enclosure [Fig. ^Simple_said] The first diagram is a perspective view of the embodiment of the present invention having a knife that opens the auxiliary mechanism" 32 201236834, and the knife shown in the figure i The blade is in the locked open position. Fig. 2 is a side view of the blade shown in Fig. 1. Fig. 3 is a side view similar to Fig. 2, and the blade position shown is intermediate between the open position and the closed position. Figure 4 is a side elevational view of the knife shown in Figure 3 showing the blade in a fully closed position. Figure 5 is an exploded perspective view of the knife of Figure 1 showing the selected components. Figure 6 is a perspective view of one of the torsion springs. Figure 7 is a perspective view of another relative torsion spring. Figure 8 is a perspective view of one of the bushings. Figure 9 is a perspective view of the shank portion of the blade showing the blade pocket portion in which a torsion spring is disposed. Figures 10 through 13 show schematically the structural steps of U occurring when the blade is rotated from the open position to the closed position. Figure 10 is a side, semi-schematic and cross-sectional view showing the structure of the automatic assist mechanism when the blade is in the fully open and locked position. Figure 11 is a side, semi-schematic and cross-sectional view showing the structure of the auxiliary mechanism when the blade has been rotated by the full_position_open position. ° ^ Fig. is a side, semi-schematic and cross-sectional view showing the structure of the auxiliary mechanism when the blade has been rotated by the full_position toward the open position. ΜAuto Figure 13 is a side, semi-schematic and cross-sectional view showing the structure of the automatic assist mechanism when the blade 33 201236834 is in the closed position. Figure 14 is a fragmentary top cross-sectional view of Figure 1 taken through the front portion of the grip showing the blade in the open position. Figure 15 is a fragmentary top cross-sectional view taken through the same position as Figure 14, but showing the blade in the closed position. Figures 16 through 19 are a series of semi-schematic and half cross-sectional views showing the blade, torsion spring and bushing during a series of events occurring when the blade is rotated from the open position to the closed position. Figure 16 shows the structural configuration of the blades, torsion springs and bushings when the blade is in the open position. Figure 16 roughly corresponds to Figure 10. Figure 17 shows the structural configuration of the blades, torsion springs and bushings when the blade is rotated about 120 degrees from the fully open position toward the closed position. Figure 17 roughly corresponds to Figure 11. Figure 18 shows the structural configuration of the blades, torsion springs and bushings when the blade is rotated about 140 degrees from the fully open position toward the closed position. Figure 18 roughly corresponds to Figure 12. Figure 19 shows the structural configuration of the blades, torsion springs and bushings when the blade is in the closed position. Figure 19 roughly corresponds to Figure 13. Figures 20 through 25 show another preferred embodiment of an opening assist mechanism of the present invention. More specifically, Fig. 20 is a perspective and partial cross-sectional view showing the selection structure of one of the opening assisting mechanisms of the present invention, and shows various components in an exploded view. Figure 21 is a perspective cross-sectional view showing the selected structure of the blade shown in Figure 20, showing the blade assembled with a side wall of a grip and the blade being in the closed position of the 34 201236834. Fig. 22A is a cross-sectional view showing the selection structure of the blade shown in Fig. 20, and the blade is in the fully open position. Figure 22B is a cross-sectional view of the knife shown in Figure 22A, and the blade is rotated to an intermediate position between fully open and fully closed, and the leg of the spring engages the blade in a position to the blade Drive from this off to on. Figure 22C is a cross-sectional view of the knife shown in Figures 22A and 22B with the blade in the fully closed position. Figure 23 is a plan view of the knife having the opening assist mechanism shown in Figure 20, and the proximal side wall is removed to expose the blade and the opening assist mechanism and the blade is in the closed position. Figure 24 is a plan view similar to Figure 23, but showing the blade in an intermediate position when it is moved from the opening to the closed position. Figure 25 is a plan view similar to Figures 22 and 23, but showing the blade in the fully open position. [Description of main component symbols] 10...knife 20... divider 12...grip 22...screw 14...blade 24...working part 16,18...sidewall section 26... Shank portion 17... pocket clip 28...blade pin 17,21...pad 30...sharp edge 19,23...outer plate 32...no edge 35 201236834 34.. Thumb operation lug 36.. blade storage slot; screw 38.. screw 39... screw hole 40.42.. hole 44.. sleeve 45.. lip 46.. pivot hole 47.. Column pit recess 48.. blade stopper 50.. washer 50.. column pit hole 54.. screw 56.. locking mechanism 57.. blade lock pin 60.. opening auxiliary mechanism 62. .. recess; seat 64.. base surface 66... surface 68.. step 70.. groove 72.. inclined section 74.. outwardly forming a fan-shaped portion 80.. bushing 81 .. . hole 82.. cylindrical member 83.. . closed end 84.86.88.. flat portion 85.. stop 89.. cylindrical wall 90.. . first gap 92 · ·Second notch 94.. Inner ring edge 96.98.. Spring 100.102.. Leg 101.. Spiral body part 200... Knife 202.. Open auxiliary mechanism 204.. Grip 206... Blade 208.210.. . Side wall 212.. . Face 214.. first recess 216.. cylindrical recess 218.. bushing 220.. spring 222.. cylindrical inner stud 224.. threaded bore 36 201236834 226... pivot Screw 251...first side wall 228... distal end 252... second side wall 230... pivot hole 254... lower surface or bottom surface 231... stop pin 260... outer surface 232. .. groove 262... tang portion 234... ring frame 263... screw 236... center shaft hole 264... lock pin 238.. tongue 266... shoulder 240. .. partial annular groove A··. arrow (direction) 242... inclined side wall D1... first diameter 244... fan flat disk D2... second diameter 246... groove Extension D3...diameter 247...central portion L1...height 250...notch L2...body length 37