^' 4340 7 0 Α7 五、發明說明（I ) 詳細說明 [發明的背景] 本發明關於申請專利範圍第1項引文的一種電手鋸機 ，特別是細切鋸。 在習知之此種類的手鋸機(DE 196 25 081 A1)已提到： 爲了不用輔助工具而能迅速更換鋸片，故在一個擺板(它在 機殻上導進且可受驅動而往復振動)設二個夾顎’沿擺板的 擺動方向相隔~~段距離設置，它們可相對移動以改變間隔 。此二夾顎係利用一聯接單元互相連接，該聯接單元可用 手動作以移動至少一個夾顎。擺板由一U形工具架金屬片 的軛件構成’其臂突伸到一個固定在機殼上的u形滾珠架 金屬片中。在工具架金屬片與球架金屬片的互相朝向的臂 之間設有滾珠。 [本發明的優點] 具有申請專利範圍第1項特點的本發明之手鋸機的優 點爲：由於鋸片的導引件與此機器互相獨立，且鋸片利用 電驅動器直接動作，故該鋸片驅動器的構造大大簡化，這 點可降低製造成本，且可使手鋸機的構形緊密，且高度減 少。具有滾子軸承的擺板的繁複的滑架導引件可省却，且 利用一種構造很扁平的鋸卡組（由導引件與鋸片構成)代替 。此鋸卡組可簡單地放到一個機器上的夾入裝置上並壓入 ，如此，在夾入裝置中的彈性之鎖合元件自動將鋸卡組固 定。如此，在鋸卡組嵌入後以及機器啓動或用手鋸片在導 引件中移動後，鋸片自動與電驅動器聯接。鋸卡組的更換 3 本紙張尺度適用中國國家標準（CNS)A4規格（210x297公釐） (請先閱讀背面之注意事項戽填寫本Vm〇 裝---------訂.！ 線 經濟部智慧財產易員工消費合作社印製 經濟部智慧財產局員工消費合作社印契 4340 7 0 A7 _______B7___ 五、發明說明（> ) 過程可極迅速地不用工具實施’因此所花安裝時間很少^ 利用申請專利範圍其他項中的特點’可將申請專利範 圍第1項中的電手鋸機作有利的進一步發展及改良。 依本發明一較佳實施例’導引件有一導引軌’它將該 鋸片的鋸片背(它在與鋸齒相反的一側)至少部分搭住’且 兩邊各具有導引腿。導引軌具有夾入元件’以嵌入該夾入 裝置中，且至少在一導引腿中有—長孔’平行於鋸片背’ 孔的長度超過鋸切的行程。鋸片中形成一個凹隙’與該至 少一個長孔共線，以使該電驅動器的一個驅動指件呈形狀 接合方式嵌入。具有該二導引腿的導引軌可利用一個彎了 180。的素材一體成形。在此情形中’內彎曲緣並無彎曲的 圓弧線，而有一留空的角落，如此’背向鋸齒的鋸背不會 向此曲率半徑處跑動，因此可避免磨損及磨擦，也不會發 熱。在另一種變更之實施例中，導引軌也可做成兩部分式 。如此，各導引腿分別製造，且該二導引腿沿一腿邊緣互 相鉚合。這種導引軌的二部式的設計的優點爲程序安全性 較高，因爲可省却彎曲作業，且各導引腿本身可矯正。要 提供該驅動指件(它呈形狀接合方式嵌入鋸片中的凹隙）自 由行程，在一導引腿中的一個共線長孔已足夠。然而爲了 製造上差裕度的理由以及爲了使鋸卡組能轉180°放置， 因此，在各導引腿中至少設有一長孔，其中各長孔對準成 共軸，因此互相設成函蓋相同範圍。 依本發明一有利實施例，鋸片在導引軌中利用至少一 榫/槽孔接合裝置保持住並導進，其中各榫/槽孔接合裝置 4 ---—II 哀-----— — |訂*1'------ {清先閱讀背面之注t事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 x 297公釐） 4340 7 〇 經濟部智慧財產局員工消費合作社印製 Α7 Β7 五、發明說明（\) 有一個平行鋸片背延伸的槽孔，槽孔長度超過鋸的往復行 程，並有一榫或一舌片，該榫保持在至少一腿上，該舌片 從一腿彎出來，該榫或舌片突伸到該槽孔中。在導引舌片 外彎的情形中，舌片上緣對彎曲緣的準確度要定得很準， 並與鋸片協調1以使鋸片在導引軌中的高度間隙減到最小 。導引舌片只從一導引腿突出，俾使高度差裕度(容許誤差 )有更好的管制，鋸片不會跑到二個導引舌片間的接縫位置 上，且二導引腿偏位不會持續。利用這種榫/孔連接裝置限 制鋸片的路徑(此路徑係鋸片從機器拆下的狀態在導引軌中 所能做者）。這點對於確使驅動指件自動嵌入鋸片中的凹隙 的作用而言，是很重要的。同時，這種榫/槽孔接合裝置也 限制鋸片在導引軌中的垂直間隙。 依本發明一有利實施例，導引軌的各導引腿之朝向鋸 片的一側上有凸塊及/或肋突出，鋸片倚在該凸塊或肋上 。這些凸塊與肋使鋸片摩擦減至最小，並確使鋸片的整段 長度範圍在該導引軌中能作一定的導引作用且間隙很少。 凸塊與肋的高度可在製造時調整，因此不同厚度的鋸片可 放入相同設計的導引軌中。 依本發明一有利實施例，導引軌的導引腿經由一條平 行於鋸片背延伸的彎曲緣互相連接成一體D在導引腿之自 由縱緣（它與彎曲緣遠離）的區域中，至少有一導引片段 (且最好有二個導引片段，沿切鋸方向相隔一段距離前後 設置）從~導引腿突出，該導引片段倚在另一導引腿上並 與之牢接（且宜利用焊接點牢接）。在此，鋸片本身有一 5 @張尺度通用宁國國家標準（CNS)A4規格（21〇χ 297公釐) ' ' 裝*-------訂---''-------線 (請先閲璜背面之沒意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 1 ' 4 3 4 0 7 0 A7 ___________B7____ 五、發明說明（4 ) 凹隙’平行於其鋸片背延伸，而該凹隙在該垂直於鋸片背 延伸的鋸片後緣戛然終止，且其寬度至少大於導引片段的 寬度。這種除了榫/槽孔連接裝置之外另設的導引機構（ 由導引腿上的導引片段和鋸片中的導引凹隙構成）大大改 善了鋸片的導引作用，特別是在透雕鋸片的場合，因爲在 這種場合，鋸片只在其鋸片背的一個短區域中被導引軌搭 住。凹隙在鋸片後橫緣戛然終止，可使鋸片從前方推入導 引軌’然後將導引舌片彎曲進入鋸片中的槽孔，而固定在 導引軌中，且可在導引軌中作有限的移動。導引軌在導引 片段上的四點作焊接，可防止導引軌裂開（特別是在導引 軌前橫緣上；鋸片係突出此前橫緣外）。如此，在至少一 導引片段的上緣的距離與導引軌彎曲緣的底之間的差裕度 (容許誤差）在很窄的範圍，以將鋸片的高度間隙減到最 小。二個導引件只從一導引腿壓入的好處爲鋸片不會在 導引片段間的接縫位上跑動，二彎曲腿偏位不會接續，且 高度差裕度可更好。如不使導引片段從一導引腿突出，也 可把一相同寬度的中間金屬片利用點焊固定在導引腿的內 面上。 依本發明另一種實施例，導引軌由二條個別製造的導 引腿組合而成，其中一導引腿用腫起部而保持間隔並在腫 起區域焊接與另一導引腿連接，或者在該做成平坦及對稱 的導引腿之間放入一金屬片以保持間隔並與該二導引腿焊 接。 依本發明一有利實施例，在該導引軌之垂直彎曲緣延 6 本紙張尺度適用中國國家標準（CNS)A4規格（210x297公釐） - ----- (^il —--- - 訂 ----I--11線 (諳先閱讀背面之泫意事項再填寫本頁> 4340 7 0 A7 -_____B7 五、發明說明（5 ) 伸的前橫緣的區域中（鋸片突出此前橫緣之外）把一個充 油脂的囊槽加工形成到彎曲緣底部中。此凹入的油脂囊槽 構成一油脂儲槽，在切鋸過程時，油脂從該儲槽出來供應 導引軌的前橫緣.（它構成鋸片用的起始緣），並將鋸片與 導引軌間的摩擦減到最小。爲了使這種效果不受影響’該 起始緣至少在二導引腿之二個朝向鋸片的內緣做成完成平 滑無突起。 依本發明的一個有利實施例，此夾入裝置有—個固定 在機殻上的固定板，該固定板具有二個鎖閂元件’沿鋸的 往復行程方向互相間隔一段距離設置，其中一鎖閂元件設 計成「掛入鈞」的形式，另一鎖元件設計成一個回彈的保 持金屬片形式且具一插入孔。在導引軌上的夾入元件有至 少一對舌片，在導引軌至少一外側上突出，且與鎖閂元件 對應，它們宜被導引軌彎曲。如此產生之夾入裝置的構造 很簡單且容易使用，它係依照一種「滑雪接合原理」作用 ，亦即前面掛入，後面卡入。如果依本發明另一實施例， 將導引軌的一對舌片各對稱於中央線設置，則鋸片可在鋸 片面轉180度轉到夾入裝置中而使用。如此鋸片及其鋸片 背可完全進到導引軌中，且其鼓起方式使鋸片背及鋸齒稜 線在兩個互相平行的平面中。 如果依本發明一有利實施例，使鋸片及其鋸片背只部 分地放入一條短導引軌中，則在鋸片前區域中，鋸切深度 可不受限制。此導引軌在各導引腿上有一對舌片，與夾入 裝置中的鎖閂元件對應且設成對鋸片平面對稱。如此，鋸 7 本紙張尺度適用中國國家標準（CNS)A4規格（210 x 297公釐) (請先閲讀背面之注意事項再填寫本頁) 裝-------"•訂---------線 經濟部智慧財產局員工消費合作社印製 A7 B7 4340 7 〇 五、發明說明（如） 片可翻轉，其方式係一方面把導引軌以一導引腿上的舌片 插入該夾入裝置，另方面以另—導引腿上的舌片插入該夾 入裝置中。如此，此手鋸機在很難探手而及的死角工作時 ，對於在撇子及右撇子都能一樣順利地操作。當省略一導 引軌上的一對舌片時，利用這透彫鋸片可作右手式或左手 式的切鋸。 依本發明一有利實施例，在夾入裝置之固定板下側上 有一個栓突出，它在鋸卡件夾入在該夾入裝置中之後，就 沒入導引軌的導引腿中的互相對齊的開口中，且沒入鋸片 中的一長孔中，該長孔與該開口共軸，長孔長度超過鋸子 的往復行程β此栓防止導引軌在夾入裝置中轉動以及鋸片 在導引軌中轉動特別是在透彫鋸片的場合（它只有一部分 容納在導引軌中）。此外，該栓防止在切鋸時，力量作用 到夾入裝置的保持金屬片上，因此也防止鋸卡組在夾入裝 置中偶然地鬆開。導引腿中的開口設計成長孔式，以使据 卡組放入夾緊裝置中時，栓確實地導入，其中，該開口之 朝向切鋸方向的輕寬度(Uchte Weite)大於(例如，只稍微大 於)栓的直徑。 依本發明一有利實施例，栓與固定板的接合係利用電 阻電焊或熱鉚合。這二種方法都有一優點，即：在外區域 中栓的高表面硬度不受影響。 依本發明一有利實施例，驅動指件大致垂直於該鋸卡 組（它係夾入在該夾入裝置中）的平面延伸，且可沿軸向 移動導進’且受一彈簧作用朝鋸卡組方向施力。此驅動指 8 本紙張尺度適用中國國家標準（CNS)A4規格〈210x 297公f ) (請先閲讀背面之注意事項再填寫本頁) 裝 -------訂--I ---I-- 經濟部智慧財產局員工消費合作社印製 4340 7 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（η 件（它宜設計成圓柱形）的軸向導引作用係在夾入裝置的 固定板中及驅動器的一連接部中進行，其中驅動指件帶有 一突緣，此突緣搭在連桿中的導引件之背向該夾入裝置的 那一側上。用於將驅動指件沿軸向施力的彈簧（它係設計 成彈簧片形式）在連桿上利用一夾緊環防止軸向移動。 依本發明一有利實施例，驅動指件在連桿中的導引作 用係呈形狀嵌合的方式，且在固定板中平行於切鋸方向導 引，爲此，在固定板中設有一長孔，被一凸緣(Bund)圍住 ，長孔長度超過鋸行程，且被一蓋金屬片蓋住，蓋金屬片 圍住驅動指件。此蓋金屬片倚在一絨密封件上，該絨密封 件圍住該長孔凸緣，且宜用矽力康（矽膠）含浸。用矽力 康含浸的好處爲，該絨不會發脹，因此蓋金屬片與固定板 之間的預應力保持在可計算的限度內，所以，產生之摩擦 可保持在限度內。蓋金屬片防止油向外經固定板中之長孔 跑出。由於驅動指件可軸向運動，且受彈簧片施彈力，故 鋸卡組更換時或放入時，驅動指件與鋸片的嵌合關係如何 並不重要。如果驅動指件不在鋸片的凹隙中呈形狀接合， 則它會頂逆彈簧片力量移動。當電驅動裝置啓動時，驅動 指件就移離鋸片，並受彈簧片作用自動卡入鋸片的凹隙中 〇 依本發明一有利實施例，此連桿（它係樞接在一盤形 曲柄上’該曲柄以不能相對轉動的方式設在驅動器的一驅 動軸上）的前方區域（此區域將驅動指件作導引）兩側在 兩個固定在機殼上的支承件（例如導引金屬片）中導進a 9 本紙張尺度適用令國國家標準（CNS>A4規格<210 x 297公釐） -----------ι--1 I ---. I I-------. <請先閱讀背面之注意事項再填寫本頁) 4340 7 0 A7 B7 經濟郤智慧財產局員工消費合作社印製 五、發明說明（《） 如此，連桿在前方區域不會偏移’因此鋸片可準確地作直 線式驅動。鋸片係經一滾子軸承〔宜爲針（銷）軸承〕樞 接在曲柄上，且有一個放入一軸孔中的夾緊環可防止連桿 從聯動裝置的出力軸滑桿。 依本發明一有利實施例，由鋸片引起的振動係利用一 種「平衡鉈」而減少，此「平衡鉈」係取決定運動的質量 ，亦即鋸片連桿、驅動指件等。此「平衡鉈」係以可縱向 移動的方式支承在機殼中，且受一連桿驅動作振動式的移 動，該連桿係以可轉動的方式設在一偏心輪上，該偏心輪 與聯動裝置的出力軸連接成不能相對轉動的方式。 爲了降低溫度，依本發明一有利實施例。在偏心輪的 周圍與底加工做成油脂槽。如此所形成之潤滑膜更好，且 油脂由這些槽流出。 依本發明一有利實施例，此連桿利用一環形肩部固定 在偏心輪上，及利用一盤沿軸向固定.，該盤本身倚在該盤 形曲柄上。如此在驅動時，連桿邊緣碰觸的情事可防止。 依本發明一有利實施例，該平衡鉈帶有一根突出之銷 ’以可滑動方式容納在一個眼孔（此眼孔在該連桿中形成 )中’其中該眼孔有一個缺口(Emzug)，向平衡鉈突伸過去 ’利用此缺口，使連桿眼孔與平衡鉈的銷之間的導引長度 或嵌合長度變得較大，而力量嵌合位置較靠近平衡鉈，且 產生之轉矩減少。 依本發明一有利實施例，平衡鉈的導引作用係利用設 在機殼中的固定彈簧達成，該固定彈簧將平衡鉈以二條彈 L0 (請先閱讀背面之注意事項再填寫本頁) 裝ill----訂---------線 本纸張尺度適用中國國家標準（CNS)A4規格咖χ 297公策） 4340 7 0 Α7 Β7 經濟部智慧財產局員工消費合作社印製 五、發明說明（q ) 簧腿各搭在其上側及下側。同時該固定彈簧將平衡鉈的側 緣作導引。利用平衡鉈沿著垂直於切鋸的方向固定的作用 ，可確保平衡鉈作直線運動。固定彈簧宜放在機殻的體殼 中’並闬鈞保持在此機殼中。利用此固定彈簧可確保構件 之間的容許誤差抵消掉並使平衡鉈無間隙地跑動0 在本發明一變更實施例中，平衡鉈的導引作用經由四 個ϋ形扣環達成，它們取代了固定彈簧被用在殼體中。如 不用此四個U形扣環，也可用四個針滾筒作軸向導引，其 中高度方向之導引係利用殼體的肋條達成。 〔圖式之說明〕 兹在以下的說明中利用圖式中所不之一實施例詳細說 明本發明。圖式中： 第一圖係一電手鋸機的縱剖面圖， 第二圖係沿第一圖的線π — π的剖圖， 第三圖係第一圖手鋸機之機殼外觀立體圖，具有一平 衡鉈， 第四圖係第一圖之手鋸機中一偏心輪沿第五圖箭頭JV 方向的下視圖， 第五圖係沿第四圖線V-V的剖面圖， 第六圖係第一圖之電手鋸機的一連桿沿第七圖箭頭YJ 方向之上視圖， 第七圖係沿第六圖線νπ - VII的剖面圖， 第八圖係第一圖手鋸機用的一個鋸卡組的立體下視圖 ， 11 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） I— — — — — — — I —I— -1111111 ^ * i I I II 鳴 I (諳先閲讀背面之注意事項再填寫本頁> 4340 7 0 A7 Β7 經濟部智慧財產局員工消費合作社印製 五、發明說明（ί。） 第九圖係第八圖中鋸卡組的立體上視圖， 第十圖係第八圖中鋸卡組沿線X-X的剖面圖， 第十一圖係第九圖中鋸卡組的一段XI的縱剖面圖， 第十二圖係第九圖中鋸卡組的一段XII的縱剖面圖1 第十三圖係第九圖中鋸卡組的沿線ΧΙΙΙ-ΧΠΙ的剖面圖 J 第十四圖係依另一實施例具一透彫鋸卡的鋸卡組的立 fltfl ΓΒΓΪ _ 體腫I， 第十五圖係第一圖手鋸機一細節的放大圖，具有第十 四圖的鋸卡組， 第十六圖係第一及第十五圖中一保持金屬片之放大立 體示圖， 第十七圖係具有透彫鋸片的一種變更之鋸卡組之與第 十四相同的示圖， 第十八圖係第十七圖中之鋸卡組的導引軌之上視圖， 第十九圖係沿第十八圖線XIX-XIX的剖面圖， 第二十圖係第十九圖中一段X-X的放大圖， 第二Η圖係沿第十九圖線ΧΧΙ-ΧΧΙ的剖面圖， 第二十二圖係第二十一圖中的一段XXII的放大圖， 第二十三圖係第十七圖中鋸卡組的鋸片的上視圖。 〔圖號說明] (10) 機殼 U01)殼體殼 (11) 電馬達驅動器 (12) 鋸片 （121)鋸片背 （123)後鋸片緣 <諳先閲璜背面之注意事項再填寫本頁) ^ I------—訂--f 111 ---線 本紙張尺度適用中國國家標準（CNS)A4規格（21〇 x 297公釐） * ' 4340 7 0 A7 _B7_ 五、發明說明（<1 ) 經濟部智慧財產局員工消費合作社印製 (13) 電馬達 (14) 馬達軸 (15) 風扇輪 (16) 斜方齒輪聯動器 (Π)出力軸 (18) 直齒輪齒牙 (19) 冠齒輪 (20) 偏心輪 （201)環形肩部 （202)油脂囊槽 (21) 曲柄 (22) 連桿 （221)孔 (23) 驅動指件 (24) 支承銷 (25) 支承套筒 (26) 夾緊環 (27) 滾子體 (28) 導引金屬片 (29) 連桿 （291)眼孔 (30) 平衡銘（301)栓 (32) 固定彈簧 （321)鈞 (33) 夾入裝置 (34) 固定板 （341)開口 (35) 掛入釣 (36) 保持金屬片 (37) 彈簧 (203)肓孔 (請先閱讀背面之注意事項再填寫本頁) 裝 * -------訂·-------- (292)拉入部 (302)銷 (322)彈簧腿 (342)凸緣 13 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公蓳） 4340 7 〇 經濟部智慧財產局員工消費合作社印製 A7 五、發明說明（、>) (38) 箭頭 (39) 栓 (40) 長孔 (41) 絨密封件 (42) 蓋金屬片 (43) 鋸卡組 (44) 導引軌 （441)(442)導引腿 （443)彎曲緣 （444)前橫緣 (45) 導引舌片 (46) 突塊 (47) 肋條 (48) (49)長孔 (50) 凹隙 (51) 開口 (52) 開口 (53) 長孔 (54) (55)舌片 (56) 中間金屬片 (57) 凹隙 (58) 槽孔 (60)中線 (64) 導引片段 (65) 凹隙 (66) 囊槽 本紙張尺度適用中國國家標準（CNS)A4規格（21〇χ 297公釐） ^--------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 '4340 7 〇 A7 ____B7_____ 五、發明說明（Λ ) 〔實施例說明〕 第一圖中縱剖面及第二圖中橫剖面所示的電手鋸機有 一機殼(10) ' —容納在機殼中的電馬達驅動器(11)及一可更 換的鋸片（12)，該鋸片可受電馬達驅動器驅動而作振動往 復式的鋸切運動，其中鋸片（12)作一預定之鋸切行程。電 馬達驅動器（11)有一個電馬達（13)〔它設計成換流馬達形式 ’具有一馬達軸（14)，有一風扇輪(丨5)在軸上固定成不能相 對轉動的方式〕且有一（45度）斜方齒輪聯動器 (16)(Wmkelgetrieb)，該聯動器的出力軸（17)與馬達軸（〗4)成 直角。馬達軸一端帶有直齒輪齒牙（18)，與一冠齒輪（19)嚙 合，該冠齒輪與出力軸（17)連接成不能相對轉動的方式β 如此，馬達軸（14)的軸向移動性有很大的容許誤差’這點 作聯動器的製造成本降低。有一偏心輪(2〇)與一盤形曲柄 (21)設在出力軸（17)上成爲不能相對於出力軸轉動的方式。 有一連桿(22)樞接在曲柄(21)上。連桿(22)的前端區域中以 軸向移動的方式容納著一驅動指件(23) ’以驅動鋸片（Π)。 有一平行於出力軸（17)延伸的支承銷(24)固定在曲柄(21)中 ，將連桿(22)樞接，支承銷(24)從曲柄(21)成直角突出。連 接(22)用一支承套筒(25)放到該支承銷(24)上’並用一夾緊 環(26)防止沿軸向掉落，夾緊環(26)放入一軸凹隙中’另一 種方式，則省却夾緊環(26)。滾子體(27)(針滾子軸承)放入 支承銷(24)與支承套筒(25)之間。如不用滾子軸承也可用滑 動軸承。連桿(22)之容納驅動指件(23)的前區域兩側係在兩 個固定在機殼（1〇)上的導引金屬片(28)中導進(第二圖）’因 15 本紙張尺度適用令國國家標準（CNS)A4規格（210x 297公釐） Κ--------訂----------線 I (請先閱讀背面之注意事項再填寫本黃) 4340 7 0 經濟部智慧財產局員工消費合作社印製 A7 _____B7___ 五、發明說明（ >.々） 此驅動指件(23)作準確的直線運動’且連桿(22)不會向上偏 離。 第四、五圖中放大圖示的偏心輪(20)的外周圍容納一 連桿(29)，以將一平衡鉈(30)作振動式驅動。連桿(29)在偏 心輪(20)的一上環形肩部(201)上及在一個盤(31)[該盤設在 偏心輪(20)與平衡鉈(30)之間]上跑動。如第四圖所示，在 偏心輪(20)之朝向盤(31)的下側中加工做成油脂槽(202)，如 此，所產生之潤滑膜更好，且油脂由此油脂槽導出。利甩 環形肩部(201)及盤(31)可防止連桿(29)在驅動時扭轉。在偏 心輪(20)下側中的一盲孔(203)以及在曲柄(21)上的一個沒入 該肓孔(203)中的栓(301)確保偏心輪(20)在正確位置裝入， 因此平衡鉈(300可準確的和鋸片（12)在相反週期中工作。 第六、七圖中放大圖示的連桿(29)的前方區域中在一眼孔 (291) 中以可滑動方式容納一根銷(302)(第一、三圖），平衡 鉈(30)突出。此銷(302)可和平衡鉈(30)製成一體成形或者壓 入平衡鉈(30)中。如第七圖所示，眼孔（291)有一拉入部 (292) ’向平衡鉈(30)方向突伸過去，如此，連桿(291)與平 衡鉈(30)的銷(302)之間的導引長度或嵌合長度變得較大。 同時’如此也可使力量嵌合的位置更靠近平衡鉈(3〇),因 此產生的轉矩就減少了。 平衡鉈(30)支承在機殻（1〇)中，可沿鋸切方向向移動。 如第二圖之立體圖所不，如果乂座標的與鋸切方向相符， 則平衡銳(30)在z座標及y座標都有支承。此支承作用利用 四個固定彈簧(32)達成，它們被壓入殻體殼（1〇1)中，並用 κ 297公釐）^ '4340 7 0 Α7 V. Detailed description of the invention (I) Detailed description [Background of the invention] The present invention relates to an electric hand saw machine, especially a fine-cutting saw, which is the first citation of the scope of patent application. A conventional hand saw of this type (DE 196 25 081 A1) has been mentioned: In order to quickly change the saw blade without auxiliary tools, a swing plate (which is guided on the casing and can be driven to reciprocate) Vibration) Set two jaw's separated by a distance of ~~ along the swing direction of the swing plate. They can be moved relatively to change the interval. The two jaws are connected to each other by a coupling unit that can be moved by hand to move at least one jaw. The wobble plate consists of a yoke of a U-shaped tool holder metal sheet, and its arms protrude into a U-shaped ball holder metal sheet fixed to the housing. Balls are provided between the mutually facing arms of the tool holder metal sheet and the ball holder metal sheet. [Advantages of the present invention] The advantages of the hand saw machine of the present invention having the first feature of the scope of patent application are that the saw blade is independent of the machine and the saw blade is directly operated by an electric drive, so the saw The structure of the chip driver is greatly simplified, which can reduce the manufacturing cost, and can make the configuration of the hand saw machine compact and reduce the height. The complicated carriage guide of the wobble plate with the roller bearing can be omitted, and a flat saw blade set (composed of the guide and the saw blade) is used instead. The saw card set can be simply put on a clamping device on a machine and pressed in. In this way, the elastic locking element in the clamping device automatically fixes the saw card set. In this way, the saw blade is automatically connected to the electric drive after the saw card set is embedded and after the machine is started or the hand saw blade is moved in the guide. Replacement of the saw card set 3 This paper size is applicable to the Chinese National Standard (CNS) A4 size (210x297 mm) (Please read the precautions on the back first 戽 Fill in this Vm〇Packing --------- Order.! Line Printed by the Intellectual Property of the Ministry of Economic Affairs and the Consumer Cooperative Cooperative Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and the Consumer Cooperative Cooperative Deed 4340 7 0 A7 _______B7___ 5. Description of the invention (>) The process can be implemented very quickly without tools', so the installation time is very small ^ The features of other items in the scope of the patent application can be used to further develop and improve the electric hand saw in the scope of the patent application. According to a preferred embodiment of the present invention, the guide member has a guide rail. The blade back of the saw blade (it is on the side opposite to the saw teeth) is at least partially lapped and has guide legs on each side. The guide rails have clamping elements' to be embedded in the clamping device, and at least in In a guide leg there is a long hole 'parallel to the back of the saw blade' and the length of the hole exceeds the cutting stroke. A recess is formed in the saw blade and is aligned with the at least one long hole to enable a drive of the electric driver. Finger joints Embedded. The guide rail with the two guide legs can be formed integrally with a material bent by 180. In this case, the 'inner curved edge does not have a curved arc line, but there is a blank corner, so' back The back of the sawtooth does not run toward this radius of curvature, so it can avoid abrasion and friction, and it does not generate heat. In another modified embodiment, the guide rail can also be made in two parts. In this way, each The guide legs are manufactured separately, and the two guide legs are riveted to each other along the edge of one leg. The two-part design of this guide rail has the advantage of high program safety, because bending operations can be saved, and each guide The leg itself is correctable. To provide the drive finger (which is recessed in the saw blade in a form-fitting manner) free travel, a co-linear long hole in a guide leg is sufficient. However, in order to create a margin The reason and in order to enable the saw card group to be placed at 180 °, therefore, at least one long hole is provided in each guide leg, and the long holes are aligned coaxially, so they are set to cover the same range with each other. An advantageous embodiment, the saw blade is on the guide rail Hold and guide with at least one tenon / slot hole engaging device, wherein each tenon / slot hole engaging device 4 ----- II wai --------| order * 1 '------ {清Please read the note on the back before filling in this page) This paper size applies the Chinese National Standard (CNS) A4 specification (210 x 297 mm) 4340 7 〇 Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economic Affairs Α7 Β7 V. Description of the invention (\) There is a slot extending parallel to the back of the blade. The length of the slot exceeds the reciprocating stroke of the saw, and there is a tenon or a tongue, which is held on at least one leg. The tongue is bent out of one leg. The A tongue or tongue projects into the slot. In the case of guiding the tongue out, the accuracy of the upper edge of the tongue to the bending edge must be set accurately and coordinated with the saw blade1 to minimize the height gap of the saw blade in the guide rail. The guide tongue only protrudes from one guide leg, so that the height difference margin (permissible error) is better controlled. The saw blade will not run to the joint position between the two guide tongues, and the second guide Leg shift will not continue. This tongue / hole connection is used to limit the path of the saw blade (this path is what the saw blade can do in the guide rail when it is removed from the machine). This is important to ensure that the drive finger is automatically inserted into the recess in the saw blade. At the same time, this tongue / groove engagement device also limits the vertical gap of the saw blade in the guide rail. According to an advantageous embodiment of the present invention, a projection and / or a rib protrude on a side of each guide leg of the guide rail facing the saw blade, and the saw blade rests on the projection or rib. These projections and ribs minimize the friction of the saw blade and ensure that the entire length of the saw blade can guide to a certain extent in the guide rail with little clearance. The height of the bumps and ribs can be adjusted during manufacture, so saw blades of different thicknesses can be placed in the guide rails of the same design. According to an advantageous embodiment of the present invention, the guide legs of the guide rail are connected to each other through a curved edge extending parallel to the back of the saw blade. D In the area of the free longitudinal edge of the guide leg (which is away from the curved edge), At least one guide segment (and preferably two guide segments, set back and forth at a distance along the sawing direction) protrudes from the ~ guide leg, the guide segment leans on the other guide leg and is firmly connected to it (And should be firmly connected using welding points). Here, the saw blade itself has a 5 @ Zhang scale General Ningguo National Standard (CNS) A4 specification (21〇χ 297 mm) '' Equipment * ------- Order ---''-------- --- line (please read the unintentional matter on the back of 璜 before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 1 '4 3 4 0 7 0 A7 ___________B7____ 5. Description of the invention (4) Dimples' parallel It extends at the back of the saw blade, and the recess ends abruptly at the trailing edge of the saw blade extending perpendicular to the back of the saw blade, and its width is at least larger than the width of the guide segment. This kind of guide mechanism (consisting of the guide segment on the guide leg and the guide recess in the saw blade) in addition to the tenon / slot connection device greatly improves the guide effect of the saw blade, especially In the case of open-cut saw blades, because in this case, the saw blade is only caught by the guide rail in a short area on the back of the saw blade. The recess ends abruptly at the rear edge of the saw blade, allowing the saw blade to be pushed into the guide rail from the front, and then the guide tongue is bent into the slot in the saw blade and fixed in the guide rail. Limited movement in the track. The guide rail is welded at four points on the guide segment to prevent the guide rail from cracking (especially on the front horizontal edge of the guide rail; the saw blade protrudes beyond the previous horizontal edge). In this way, the margin (tolerance) between the distance of the upper edge of the at least one guide segment and the bottom of the curved edge of the guide rail is in a narrow range to minimize the height gap of the saw blade. The advantage of pushing in the two guides from only one guide leg is that the saw blade will not run on the seam between the guide segments, the two bent legs will not be offset, and the height difference margin can be better. . If the guide segment does not protrude from a guide leg, an intermediate metal piece of the same width can also be fixed to the inner surface of the guide leg by spot welding. According to another embodiment of the present invention, the guide rail is composed of two separately manufactured guide legs. One of the guide legs is spaced with a bulge and is welded to the other guide leg in the bulge area, or A metal sheet is placed between the guide legs that are made flat and symmetrical to maintain a gap and are welded to the two guide legs. According to an advantageous embodiment of the present invention, the vertical bending edge of the guide rail is extended by 6 sheets of paper. The size of the paper is applicable to China National Standard (CNS) A4 (210x297 mm)------ (^ il ------- Order ---- I--11 line (谙 Please read the intention on the back before filling in this page> 4340 7 0 A7 -_____ B7 V. Description of the invention (5) In the area of the front transverse edge (the blade is protruding) Outside of the previous horizontal edge) a grease-filled capsule groove is formed into the bottom of the curved edge. This recessed grease capsule groove forms a grease storage tank, and during the sawing process, grease comes out of the storage tank to supply the guide rail (It forms the starting edge for the saw blade), and minimizes the friction between the saw blade and the guide rail. In order to avoid this effect, the starting edge is at least two guide legs. Two inner edges facing the saw blade are made smooth without protrusions. According to an advantageous embodiment of the present invention, the clamping device has a fixing plate fixed on the casing, the fixing plate having two latching elements. 'Set a distance from each other along the direction of the reciprocating stroke of the saw, one of the latch elements is designed to "hang in The other locking element is designed as a spring-retaining metal sheet with an insertion hole. The clamping element on the guide rail has at least a pair of tongues protruding on at least one outer side of the guide rail, and Corresponding to the latch elements, they should be bent by the guide rail. The construction of the clamping device thus produced is simple and easy to use. It is based on a "skiing principle", that is, the front is engaged, and the rear is engaged. If According to another embodiment of the present invention, a pair of tongue pieces of the guide rail are arranged symmetrically to the center line, so that the saw blade can be turned 180 degrees on the saw blade surface to be used in the clamping device. Such a saw blade and its saw The blade back can completely enter the guide rail, and its bulging mode makes the blade back and the sawtooth edge line in two mutually parallel planes. According to an advantageous embodiment of the present invention, the blade and the blade back only Partially placed in a short guide rail, the cutting depth can be unlimited in the front area of the saw blade. This guide rail has a pair of tongues on each guide leg, and a latch element in the clamping device Corresponds and is set to be symmetrical to the plane of the saw blade. Thus, the saw 7 This paper size applies to China National Standard (CNS) A4 specification (210 x 297 mm) (Please read the precautions on the back before filling out this page) Loading ----- " • Order ------ --- Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 4340 7 05. Invention description (eg) The piece can be flipped, the way is to insert the guide rail with the tongue on a guide leg on the one hand The clamping device, on the other hand, is inserted into the clamping device with a tongue on the guide leg. In this way, when the hand saw works at a hard-to-reach corner, it is suitable for both right-handers and right-handers. It can operate equally smoothly. When a pair of tongues on a guide rail is omitted, the open-cut saw blade can be used as a right-handed or left-handed cutting saw. According to an advantageous embodiment of the present invention, in the clamping device, There is a bolt protrusion on the lower side of the fixing plate. After the saw clip is clamped in the clamping device, it is submerged into the mutually aligned openings in the guide legs of the guide rail and into the saw blade. In a long hole, the long hole is coaxial with the opening, and the length of the long hole exceeds the reciprocating stroke β of the saw. This bolt prevents the guide rail from being clamped. And rotation of the blade in the opposite rotation, particularly in the case of the blade engraved in the guide rail (only part of which is housed in the guide track). In addition, the bolt prevents a force from being applied to the holding sheet of the clamping device when cutting, and therefore prevents the saw card set from being accidentally released during the clamping device. The opening in the guide leg is designed as a long hole so that when the card set is put into the clamping device, the bolt is surely introduced, wherein the light width (Uchte Weite) of the opening facing the cutting direction is greater than (for example, only Slightly larger than) the diameter of the plug. According to an advantageous embodiment of the present invention, the joint between the bolt and the fixing plate is made by resistance welding or thermal riveting. Both methods have the advantage that the high surface hardness of the plug in the outer region is not affected. According to an advantageous embodiment of the present invention, the driving finger extends substantially perpendicular to the plane of the saw card set (which is clamped in the clamping device), and can be moved in axial direction and guided toward the saw by a spring The deck applies force. This driver refers to 8 paper sizes applicable to the Chinese National Standard (CNS) A4 specifications <210x 297 male f) (Please read the precautions on the back before filling this page) Loading ----- Order --I --- I--Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 4340 7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (η pieces (it should be designed to be cylindrical)) The clamping device is carried out in a fixing plate and a connecting part of the driver, wherein the driving finger is provided with a flange, which is placed on the side of the guide in the connecting rod facing away from the clamping device. A spring (which is designed in the form of a spring leaf) for urging the driving finger in the axial direction uses a clamping ring on the connecting rod to prevent axial movement. According to an advantageous embodiment of the present invention, the driving finger is in the connecting rod. The guiding action in the system is a form-fitting way, and is guided in the fixing plate parallel to the sawing direction. To this end, a long hole is provided in the fixing plate, surrounded by a flange, and the long hole The length exceeds the travel of the saw and is covered by a cover metal sheet that surrounds the driving fingers. The cover metal sheet leans on a fleece seal that surrounds the long hole flange, and should be impregnated with Silicone (silicone). The advantage of impregnating with Silicone is that the pile will not swell, so the cover The prestress between the metal plate and the fixed plate is kept within a calculable limit, so the friction generated can be kept within the limit. The cover metal piece prevents oil from running out through the long hole in the fixed plate. Because of the driving fingers It can move axially and is subject to the elastic force of the spring blade. Therefore, when the saw card set is replaced or inserted, the fitting relationship between the driving finger and the saw blade is not important. If the driving finger is not in the recess of the saw blade, When the shape is engaged, it will move against the force of the spring blade. When the electric drive device is activated, the driving finger moves away from the saw blade and is automatically caught in the recess of the saw blade by the spring blade. According to an advantageous implementation of the present invention For example, this link (which is pivotally connected to a disc-shaped crank 'the crank can not be relatively rotated on a drive shaft of the driver) on both sides of the front area (this area guides the driving fingers) Two supports fixed to the housing For example, guide the metal sheet) into a 9 This paper size applies the national standard of the country (CNS > A4 specifications < 210 x 297 mm) ----------- ι--1 I- -. I I -------. ≪ Please read the notes on the back before filling out this page) 4340 7 0 A7 B7 Printed by the Economic and Intellectual Property Bureau Employee Consumption Cooperative V. Invention Description (") So, The connecting rod does not shift in the front area 'so the saw blade can be driven linearly accurately. The saw blade is pivotally connected to the crank via a roller bearing (preferably a pin (pin) bearing), and a clamping ring placed in a shaft hole can prevent the connecting rod from sliding out of the output shaft of the linkage. According to an advantageous embodiment of the present invention, the vibration caused by the saw blade is reduced by a kind of "balanced chirp". This "balanced chirp" takes the quality that determines the movement, that is, the saw blade link, the driving finger, and the like. This "balance cymbal" is supported in the casing in a longitudinally movable manner and is driven by a connecting rod for vibrational movement. The connecting rod is rotatably provided on an eccentric wheel, and the eccentric wheel and The output shaft of the linkage device is connected in a manner that cannot be relatively rotated. To reduce the temperature, an advantageous embodiment of the invention is used. A grease groove is formed around the eccentric and the bottom. The lubricating film thus formed is better, and the grease flows out from these grooves. According to an advantageous embodiment of the present invention, the link is fixed to the eccentric with an annular shoulder and axially fixed with a disc, which itself rests on the disc-shaped crank. In this way, when driving, the contact of the edge of the connecting rod can be prevented. According to an advantageous embodiment of the invention, the counterweight is provided with a protruding pin 'sliably received in an eyelet (the eyelet is formed in the connecting rod)', wherein the eyelet has a gap (Emzug) Extend to the balance ridge process. 'Using this gap, the guiding length or fitting length between the eye of the connecting rod and the pin of the balance ridge becomes larger, and the force fitting position is closer to the balance ridge, and Reduced torque. According to an advantageous embodiment of the present invention, the guide effect of the balance cymbals is achieved by a fixed spring provided in the casing, which fixes the balance cymbals with two bullets L0 (please read the precautions on the back before filling this page). ill ---- Order --------- The paper size of the paper is applicable to the Chinese National Standard (CNS) A4 specification and 297 public policy) 4340 7 0 Α7 Β7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (q) The spring legs are placed on the upper side and the lower side, respectively. At the same time, the fixed spring guides the side edge of the balance cymbal. The balance 铊 is fixed in a direction perpendicular to the cutting saw to ensure that the balance 铊 moves in a straight line. The fixing spring should be placed in the body case of the case and held in the case. The use of this fixed spring can ensure that the allowable errors between the components are cancelled out and the balance 铊 runs without a gap. 0 In a modified embodiment of the present invention, the guide effect of the balance 经由 is achieved through four ϋ-shaped buckles, which replace A fixed spring is used in the housing. If these four U-shaped buckles are not used, four needle rollers can also be used for axial guidance. The height direction guidance is achieved by using the ribs of the casing. [Explanation of Drawings] The present invention will be described in detail in the following description using an embodiment not shown in the drawings. In the drawings: the first diagram is a longitudinal sectional view of an electric hand saw, the second diagram is a cross-sectional view taken along line π-π of the first diagram, and the third diagram is an external perspective view of the cabinet of the first diagram With a balance frame, the fourth figure is a bottom view of an eccentric wheel in the first figure of the hand saw in the direction of the arrow JV in the fifth figure, the fifth figure is a cross-sectional view along the fourth figure line VV, the sixth figure is The top view of a connecting rod of the electric hand saw in the first figure in the direction of the arrow YJ of the seventh figure, the seventh figure is a cross-sectional view taken along the sixth figure line νπ-VII, and the eighth figure is the first figure of the hand saw machine A three-dimensional bottom view of a saw card set, 11 This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 public love) I — — — — — — — I —I— -1111111 ^ * i II II I (谙 Please read the notes on the back before filling in this page> 4340 7 0 A7 Β7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (ί.) Three-dimensional top view, the tenth figure is a sectional view of the saw card group in the eighth figure along the line XX, and the eleventh figure is one of the saw card group in the ninth figure A longitudinal section view of XI, and the twelfth figure is a section of the saw card group in the ninth figure XII. The thirteenth figure is the section view of the saw card group in the ninth figure along the line XΙΙΙ-χΠI. J Fourteenth The figure is a stand-up fltfl ΓΒΓΪ _ body swelling I of a saw card set with an open-carved saw card according to another embodiment, and the fifteenth figure is an enlarged view of a detail of the first figure of the hand saw, with the saw of the fourteenth figure Card set, the sixteenth figure is an enlarged perspective view of a holding metal sheet in the first and fifteenth figures, and the seventeenth figure is a saw card set with a modification of the open-cut saw blade, which is the same as the fourteenth Figure 18 is the top view of the guide rail of the saw card set in Figure 17; Figure 19 is a cross-sectional view taken along line XIX-XIX in Figure 18; Figure 20 is the tenth The enlarged view of a section XX in the ninth figure, the second figure is a cross-sectional view along the nineteenth line XX-IX, the twenty-second figure is an enlarged view of the XXII in the twenty-first figure, the twenty-third The figure is the top view of the saw blade of the saw card group in the seventeenth figure. [Illustration of the drawing number] (10) Case U01) Housing shell (11) Electric motor driver (12) Saw blade (121) Saw blade back (123) The edge of the rear blade < read the precautions on the back of the page before filling in this page) ^ I ---------- Order--f 111 --- The standard of the paper size of the paper is applicable to the Chinese National Standard (CNS) A4 specification (21 × x297 mm) * '4340 7 0 A7 _B7_ V. Description of invention (& 1) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs (13) Electric motor (14) Motor shaft (15) Fan Wheel (16) Bevel gear coupling (Π) Output shaft (18) Spur gear tooth (19) Crown gear (20) Eccentric wheel (201) Toroidal shoulder (202) Grease pocket groove (21) Crank (22) Connecting rod (221) hole (23) Driving finger (24) Support pin (25) Support sleeve (26) Clamping ring (27) Roller body (28) Guide sheet metal (29) Connecting rod (291) Eyelet (30) Balance inscription (301) Bolt (32) Fixing spring (321) Jun (33) Clamping device (34) Fixing plate (341) Opening (35) Hanging into fishing (36) Holding metal piece (37) Spring (203) countersink (please read the precautions on the back before filling out this page) Installation * ------- Order · -------- (292) Pull-in section (302) Pin (322) Spring leg (342) flange 13 This paper size applies to China National Standard (CNS) A4 (210 X 297 cm) 4340 7 〇 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 V. Description of Invention (, >) (38) Arrow (39) Peg (40) Long hole (41) Fleece seal (42) Cover sheet (43) Saw card set (44) guide rail (441) (442) guide leg (443) curved edge (444) front transverse edge (45) guide tongue (46) protrusion (47) rib (48) (49) ) Long hole (50) recess (51) opening (52) opening (53) long hole (54) (55) tongue (56) middle metal plate (57) recess (58) slot hole (60) center line (64) Guiding section (65) Recess (66) Capsule This paper size applies to Chinese National Standard (CNS) A4 (21〇χ 297 mm) ^ -------- Order ---- ----- Line (Please read the notes on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs' 4340 7 〇A7 ____B7_____ V. Description of the Invention (Λ) [Illustration of the Example] The first picture The electric hand saw shown in the middle longitudinal section and the cross section in the second figure has a casing (10) '-an electric motor drive (11) and a replaceable saw blade (12) housed in the casing. The blade can be driven by an electric motor driver to perform a vibrating reciprocating sawing motion, wherein Sheet (12) for a predetermined stroke of the sawing. The electric motor driver (11) has an electric motor (13) [it is designed in the form of a commutating motor 'has a motor shaft (14), a fan wheel (丨 5) is fixed on the shaft so that it cannot be rotated relative to it] and one (45 degrees) Bevel gear coupling (16) (Wmkelgetrieb), the output shaft (17) of the coupling is at right angles to the motor shaft (4). One end of the motor shaft is provided with a spur gear tooth (18), which meshes with a crown gear (19). The crown gear is connected to the output shaft (17) in a non-rotatable manner β. Thus, the motor shaft (14) moves axially This has a large allowable error, which reduces the manufacturing cost of the coupling. An eccentric wheel (20) and a disc-shaped crank (21) are arranged on the output shaft (17) so as to be unable to rotate relative to the output shaft. A connecting rod (22) is pivotally connected to the crank (21). A driving finger (23) 'is accommodated in the front end region of the connecting rod (22) in an axially moving manner to drive the saw blade (Π). A support pin (24) extending parallel to the output shaft (17) is fixed in the crank (21), the connecting rod (22) is pivotally connected, and the support pin (24) projects at a right angle from the crank (21). The connection (22) is placed on the support pin (24) with a support sleeve (25) 'and a clamping ring (26) is prevented from falling in the axial direction, and the clamping ring (26) is placed in a shaft recess' Alternatively, the clamping ring (26) is omitted. The roller body (27) (needle roller bearing) is inserted between the support pin (24) and the support sleeve (25). If roller bearings are not used, sliding bearings can also be used. The two sides of the front area of the connecting rod (22) containing the driving finger (23) are guided in two guide metal pieces (28) fixed to the casing (10) (second picture). This paper size is applicable to the national standard (CNS) A4 specification (210x 297 mm) Κ -------- Order ---------- Line I (Please read the precautions on the back before (Fill in this yellow) 4340 7 0 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 _____B7___ V. Description of the invention (> .々) The driving finger (23) performs accurate linear motion 'and the connecting rod (22) does not Deviation upwards. The outer periphery of the eccentric wheel (20) enlargedly shown in the fourth and fifth figures contains a connecting rod (29) for driving a balance cymbal (30) in a vibration manner. The connecting rod (29) runs on an upper annular shoulder (201) of the eccentric wheel (20) and on a plate (31) which is set between the eccentric wheel (20) and the balance cymbal (30). . As shown in the fourth figure, the grease groove (202) is processed into the lower side of the eccentric wheel (20) facing the disc (31). In this way, the resulting lubricating film is better, and the grease is led out from the grease groove. The sharp shoulder (201) and the disc (31) prevent the connecting rod (29) from twisting during driving. A blind hole (203) in the underside of the eccentric wheel (20) and a bolt (301) on the crank (21) that sinks into the countersink (203) ensure that the eccentric wheel (20) is inserted in the correct position Therefore, the balance 铊 (300 can work accurately in the opposite cycle with the saw blade (12). The front area of the connecting rod (29) enlarged and shown in the sixth and seventh figures is slidable in an eye hole (291) Way to accommodate a pin (302) (first and third pictures), the balance cymbal (30) protrudes. This pin (302) can be integrated with the balance cymbal (30) or pressed into the balance cymbal (30). As shown in the seventh figure, the eyelet (291) has a pull-in portion (292) 'protruding in the direction of the balance cymbal (30). Thus, between the connecting rod (291) and the pin (302) of the balance cymbal (30) The guide length or mating length becomes larger. At the same time, 'this can also make the force mating position closer to the balance 铊 (30), so the torque generated is reduced. The balance 铊 (30) is supported on the casing In (10), you can move in the sawing direction. As shown in the perspective view of the second figure, if the 乂 coordinate matches the sawing direction, the balanced sharp (30) has support in the z and y coordinates. This Support use A fixing spring (32) is reached, they are pressed into the housing shell (1〇1) and treated with κ 297 mm)
It—— — — — — — —--^--------^--.-------^ I (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（Λ ) 鈞(321)保持在機殼(1〇)中。利用設在機殼（1〇)中的倚靠面’ 可將固定彈簧(32)在y方向的位置準確限定。固定彈簧(32) 用各二條彈簧腿（322)搭住平衡鉈(30)之上、下側，並以預 應力倚在平衡鉈上下側上。利用這種固定彈簧（32)可確保 構件間的容許誤差抵消，並使平衡鉈能作無間隙的跑動。 平衡鉈(30)以一橢圓形凹隙(57)圍住該盤形曲柄(21)。 爲了將鋸片（12)以可更換的方式夾入，在機殼（10)上設 一夾入裝置(33)。此夾入裝置(33)有一個固定在機殻（10)上 的固定板(34)(在第十五圖中作放大顯示）。在固定板(34)上 ，在其背向機殼（10)的下側上設有二個鎖閂元件，沿鋸切 行程方向互相隔一段距離，其中之一設計成「掛入鈞」 (35)的形式，另一個設計成一種具有插入開口的回彈式的 「保持金屬片」（36)形式。保持金屬片（36)以可在一開口 (341)運動的方式掛入其中[該開口（341)在固定板(34)上形成] ，且被一彈簧(37)[彈簧支持在保持金屬片(36)及固定板(34) 上]向掛入鈞(35)的方式施力。保持金屬片（36)有一自由突 出的腿(362)，藉之可使保持金屬片(36)沿第十五圖箭頭方 向(38)頂逆彈簧(37)的彈力而樞轉。有栓(39)在固定板(34)下 側突出，該栓嵌入固定板(34)的一孔中，並利用電阻電焊 或熱鉚合固定板(34)連接。栓(39)(它具有高度之表面硬度) 的功能在下文還要說明。 如第二圖所示，該驅動鋸片（12)的驅動指件(23)係在連 -桿(22)的一孔(221)中及在固定板(34)的一長孔(40)中導進。 在此，長孔(40)(第十五圖）的長度長出鋸切行程。因此驅動 17 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公S ) --------I ---裝.-----訂. — (請先閱讀背面之注意事項#填寫本頁) 4340 7 0 A7 B7 五、發明說明（b) 指件(23)的振動式往復運動不會受固定板(34)妨礙》在此， 該長孔被一個從固定板(34)彎出的凸緣(342)(Bund)(第十五 圖）圍住，有~個用矽力康含浸過的絨密封件(41)放到該凸 緣(342)上(第一及第二圖）。長孔(40)被一圓形蓋金屬片(42) 密封，蓋金屬片(42)在絨密封件(41)上滑動，因此將手鋸機 外面密封。利用矽力康含浸可使絨密封件(41)有度量準確 的厚度，因而連桿(22)可裝設成不受應力。 爲了要操作，在手鋸機上設有二鋸片（12)，一緊密鋸 片（Buendigsaegeblatt)(第八、九圖)及一所謂的「透彫鋸片」 (第十四、十五、十七圖）’該緊密鋸片彎翹成使其鋸片背 (121)及鋸齒稜(122)在互相平行的二個平面中，該透彫鋸片 設計成平坦狀。鋸片（12)以可縱移方式容納在一導引件中 ，且與等引件構成一單獨的（且宜爲不可分離的)構件，此 構件在以下稱「鋸片卡組」或「鋸卡組」（43)，它設計成 可夾入機殼（10)上之夾入裝置(33)中的形式。在第八、九圖 顯示一右手甩及左手用緊鋸用的鋸卡組(43)，第十四、十 五、十七圖各顯不透彫据用的館卡組。 在第八、九圖的實施例中，導引件係由一導引軌(44) 構成，它將鋸片（12)鋸片背（121)在其全長範圍搭住，且有· 二個導引腿(441)(442)，各位於鋸片一側。在圖示實施例中 。導引軌(44)係一體成型，而二導引腿(441)(442)利用—彎 曲緣(443)互相連接成一體。另一種方式，可將二導引腿 (441)(442)分別製成分開之構件，然後沿縱緣互相連接，例 如用鉚合、焊接等。鋸片（12)利用二個榫/孔連接手段[它們 本紙張尺度適用中囤國家標準（CNS>A4規格（210 X 297公釐） (諳先閱讀背面之沒意事項再填寫本頁) 裝-------訂--------線 經濟部智慧財產局員工消費合作社印製 4340 7 〇 A7 ___B7 五、發明說明（Λ ) 設成對鋸卡組(43)的中線(60)成對稱]保持在導引軌中，且 在其中作有限縱向移動的導引。各榫/孔連接手段由鋸片 (12)中的一個用虛線表示的槽孔(58)(亦見第二十三圖）[它平 行於鋸片背（121)延伸]以及一個導引舌片(45)構成，該導引 舌片從彈簧腿(441)彎出且彎入槽孔(58)中。這些榫/孔連接 手段將鋸片（12)在導引軌(44)內在從手鋸機拆卸時狀態所能 走的路徑作限制，並限制鋸片（12)在導引軌(44)中的垂直間 隙。鋸片（12)中二槽孔(58)的槽孔長度選設成比鋸片（12)的 鋸切行程更長。如第十圖之剖面圖所示，在導引腿(441)之 內面止有突塊(46)及肋條(47)突出，鋸片（12)倚在突塊及肋 條上。導引腿(442)之內面上也是如此。突塊(46)及肋條(47) 的高度可在製造時調整，因此利用相同之導引軌(44)可容 納不同厚度的鋸片（12)塊(46)與肋條(47)將鋸片（12)在導引軌 (44)中的摩擦減到最小，並確保在鋸片（12)全長範圍有一定 的且沒有間隙的導引作用。爲了防止鋸片（12)彎曲緣(443) 上的摩，故彎曲緣(443)的彎曲修圓部的角隅留空，因此鋸 片背（121)邊緣在彎曲緣(443)的曲率半徑範圍內係空轉者。 此留空部在第十三圖中用（59)表示。第十三圖亦顯示。在 導引腿(441)(442)內面上可不用凸塊(46)及肋條(47)，而各固 定著中間金屬片(56)，中間金屬片(56)擔任鋸片（12)的滑動 功能。藉選擇適當的中間金屬片(56)的材料，可將鋸片摩 擦減到最小，並減少磨損。 在二導引腿（441)(442)中形成二對互相對準的長孔 (48)(49)，平行於鋸片背（121)，其長度超過鋸切行程。各導 19 本紙張尺度適用中國國家標準（CNS>A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁> 裝--------訂·--------線 I - 經濟部智慧財產局員工消費合作社印製 4340 7 Ο Α7 ____Β7_____ 五、發明說明（β ) 引腿(441 )(442)中的長孔(48)(49)對導引軌(44)的中線設成對 稱。在鋸片（12)中形成一凹隙(5〇)(亦見第二圖），與各對長 孔(48)(49)成共線，以使驅動指件(23)以形狀接合的方式沒 入。鋸片（12)中之此二凹隙(50)再設成對中線(60)對稱。此 外，在導引腿(441)中設有二個開口（51)。對中線(60)成對稱 ，而在導引腿(442)中設有二個與該開口（51)共軸的開口（52) 。開口（51)與(52)用於當鋸卡組(43)插入夾入裝置(33)時容納 該固定板(34)上突出的栓〇9)(第十五圖）。爲了確使栓(39) 毫無問題地沒入，故開口（51)(52)沿鋸切方向的淨寬度略大 於栓（34)的直徑，因此開口（51)(52)略呈橢圓形。在開口 (51)(52)的區域中，在鋸片中各形成一長孔(53)(第十二圖及 第二十三圖），其孔長超過鋸切行程，因此鋸切行程不會被 該沒入開口（51)(52)中的栓(39)妨礙。 爲了將鋸卡組(43)夾入手鋸機的該夾入裝置(33)中，故 在導引軌(44)上形成夾入元件。在第八〜十圖的實施例中 ，夾入元件有二對舌片（54)(55)，對稱於中線(60)設在一導 引腿(441)上。如此，各舌片(54)在導引腿(441)末端彎曲， 且各舌片(55)在中線附近從導引腿(441)切出並彎出來。夾 入裝置(33)依一種滑雪板接合(Skibindung)原理作用，其方 式係如第十五圖虛線所示：鋸卡組(43)以一舌片(55)掛入該 「掛入釣」（35)中，並藉著壓下鋸卡組(43)使相關舌片(54) 在「保持金屬片」（36)彈出的作用下卡入其「插入開口」 中。在「保持金屬片」（36)彈回之後，鋸卡組(43)利用「掛 入鈞」（35)及*保持金屬片」（36)而確定地固定在該固定板 20 (請先閱讀背面之注意事項再填寫本頁) 裝--------訂--------線 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐〉 經濟部智慧財產局員工消費合作社印製 4340 7 〇 Α7 __Β7_ 五、發明說明（Λ ) (34)的下側。在固定板(34)下側的栓(39)[它沒入開口（51)(52) 中]一方面防止鋸片（12)在導引軌(44)中扭轉(特別是在透彫 鋸的場合），另一戶面防止在鋸切時，力量作用到「保持金 屬片」（36)上，並將它沿著使夾入裝置(33)鬆開的方向壓離 。依第八、九圖具有鋸卡組(43)的右手式及左手式的鋸切 作用可以藉鋸卡組(43)在鋸片（12)的平面中轉動而變可能， 爲此，一方面把導引軌(44)之導引腿(441)上的舌片(54)(55) 中的一對掛入該夾入裝置(33)中，另方面把另一對掛入該 夾入裝置（33)中。由於所有需要的開口（51)(52)、長孔 (48)(49)、凹隙(50)及長孔(53)在鋸卡組(43)中惜有二組且設 成對中線(60)對稱，因此鋸卡組(43)在二個樞轉位置都以相 同方式與手鋸機合作。 在第十四、十五圖中所示的具有透彫鋸片（12)的鋸卡 組(43)中，該透彫鋸（12)並腫突狀，而係設計成平坦狀，且 只用其鋸片背（121)的一部分放在導引軌（44)中。長孔 (48)(49)與導引腿(441)(442)中的開口（51)(52)以及凹隙(50)以 及鋸片（12)中的長孔(53)只有單組。各一對舌片(54)(55)在各 導引腿(441)及(442)上形成，因此鋸卡組(43)可以一次用導 引腿(441)插到夾入裝置(33)中，一次翻轉以導引腿(442)插 入夾入裝置(33)中使用。因此，對於在撇子及右撇子而言 ，在難以到達的死角都可用此手鋸機同樣地作最佳的工作 。此外，鋸卡組(43)係如前述構造。 第十七〜二十三圖中顯示具有一透彫鋸片（U)的鋸卡 組(43)，它與第十四、十五圖的鋸卡組(43)有些不同。鋸片 21 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） I^--------訂-------線 I (請先閲讀背面之沒意事項再填寫本頁) 43 4 0 f 〇 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（，） (12)仍在導引腿(441)(442)間的導引軌(44)中作有限之軸向移 動導進，二導引腿經彎曲緣(443)互相連成一體。由於導引 軌(44)只部分地搭住遠片（12)的鋸片背（121) ’因此，爲了使 鋸片（12)在導引軌(44)中的導引作用較佳’故除了榫/槽孔連 接手段外[由鋸片（12)中的槽孔(58)以及由導引腿(441)彎出 的導引舌片(45)構成]，還在導引腿(441)中壓鑄出另外二個 導引片段（64)，它們沿鋸切方向先後隔一段間隔設成對齊 。在此，該壓鑄作用使得導引片段（64)倚在另一導引腿 (442)的內面上。各導引片段(64)利用二個焊點焊接在導引 腿(442)上。利用導引軌(44)的焊接，可確使導引軌(44)在其 二個遠離彎曲緣(443)的邊緣(主要在鋸片出口的前區域中) 不會裂開=從導引腿(441)壓鑄成導引片段(64)的情形特別 是在第十九圖及第二十圖的放大圖可以看出。此二導引片 段(64)連同導引舌片(45)由同樣的導引腿(44)壓鑄出，如此 ’鋸片（12)不會在導引片段(64)與導引舌片(45)飲間的接縫 位置跑動，二個導引腿移位偏離的情事不會發生，而鋸片 (12)在導引軌(44)中的高度的容許偏差可以更佳。鋸片（12) 中有一凹隙(65)(第二十三圖）與此二導引片段(64)配合，該 凹隙平行於鋸片背(121)延，且可在後鋸片緣(123)[它垂直於 鋸片背（121)延伸]自由跑出，以使鋸片（12)移入導引軌(44) 中◊凹隙(65)寬度略大導引片段(64)的寬度，因此鋸片（12) 兩邊可保持間隙在導引片段(64)的寬度，因此鋸片（12)兩邊 可保持間隙在導引片段(64)上作導引。從凹隙(65)上緣到鋸 片背（121)的距離以及導引片段(64)上緣與導引軌(43)之彎曲 22 本紙張尺度中_家標準（CNS)A4規格（210 X 297公就） Μ--------* 訂 — -------^ » (請先閲讀背面之注意ί項再填寫本頁) 4340 7 Δ7 B7 五、發明說明（4) 緣(443)的底間的距離準確度須定得很準，以將鋸片（12)在 導引軌(44)中的高度縫隙減到最小。藉著凹隙在方向自由 跑出’可使鋸片（12)由前方推入該製好的導引軌(44)中來》 然後將導引腿(441)上的導引舌片(45)彎入鋸片（12)的槽孔 (58)中，使鋸片（12)在導引軌(44)中保持成可縱向移動的方 式。 在鋸卡組(43)另一組圖未示的實施變更例中，導引片 段被至少一中間金屬片取代，該中間金屬片倚在二導引腿 (441)(442)的內面上並利用焊點固定在其上，並構成鋸片 (12)用的佑靠部或導引件。利用這種中間金屬片，可將高 度的間隙對各種鋸片在安裝時作調整，且藉著其材料自由 選擇’可使導引件的硬度比鋸片（12)更高。 一如第八、九及十四圖的鋸卡組，鋸片（12)在導引軌 (44)中以其鋸片面倚在肋條(47)(第二^一圖）上，該肋條係 縱導引腿(441)(442)壓鑄出來，且在導引腿(441)(442)之內面 突出。肋(47)的高度可在製造的時調整，因此利用相同導 引軌(44)可容納不一樣厚度的鋸片（12)。在此，肋條(47)亦 將鋸片（12)在導引軌(44)中的摩擦減到最小，其中爲了避免 鋸片(2)在彎曲緣(443)較大的摩擦，此處在彎曲緣(443)的彎 曲修圓部的角隅處亦留空，因此鋸片背（121)的邊緣可在彎 曲緣(443)的曲率半徑範圍內自由跑動。這種留空方式與第 十三圖所示者相同。爲了進一步減少摩擦，在導引軌(44) 的前橫緣(444)[它垂直於彎曲緣延伸，且構成所謂的鋸片 (12)的跑動緣，且鋸片（12)突出該前橫緣外]區域中在導引 23 本纸張尺度適用中國國家標準（CNS)A4規格（210 X 297公« ) (請先閲讀背面之注意事項再填寫本頁) ^ ---II----I---^ 經濟部智慧財產局員工消費合作社印製 4340 7 0 A7 B7 五、發明說明（/) 軌(44)之彎曲緣(443)底部加工出一個充油脂的囊槽(66)(第 二十二圖）。此油脂囊槽(66)中的油貯槽在鋸時將油脂供給 導引軌(44)之前橫緣（444)，並負責使鋸片（12)與導引腿 (441)(442)間有良好的潤滑作用。此處必須把前橫緣至少在 導引腿(441)(442)之朝向鋸片（12)的內緣上做成完全無接縫 〇 爲了將鋸卡組(43)夾入該設在手鋸機上的夾入裝置(33) 中，在二導引腿（441)(442)上再以相同方式形成夾入舌片 (54)，因此鋸卡組(43)可以一次用導引腿(441)插入該夾入裝 置(33)，而另一次轉180°以導引腿(442)插入該夾入裝置 (33)。對於緊密鋸，該鋸卡組(43)只設有一對夾入舌片(54) 與(55)。各依在導引軌(44)上那個導引腿(441)或(442)上的那 對舌片省略掉而定，可以變成右手式或左手式的透彫鋸。 一如在第八及九圖所述的鋸卡組所述，在第十四或第 十七圖的鋸卡組(43)由二個分別製造的導引腿(441)(442)組 成，爲此，舉例而言，其一導引腿在軌背附近截平以在導 引腿(441)(442)之間造成一縫隙，容納鋸片（12)，此截平部 倚在另一導引腿上並用焊點與該導引腿連接成不能分開的 方式。這種導引軌(44)二部分式的設計的優點爲：程序安 全性較高，因爲一方面’在一體式導引軌(44)的情形中所 要的彎曲作業省却，另一方面’各導引腿本身可以修正。 反之，具有彎曲緣(443)的一體式導引軌(44)的好處爲：安 裝成本較低，且所有工作功能整合在一部件中，且在人體 工學上及視覺上是最好的解決方案。 24 本紙張尺度適用t國國家標準（CNS)A4規格（210 X 297公釐） f琦先閱讀背面v;i意事項再填寫本頁) 裝 I I I I I Ϊ I ---I . 經濟部智慧財產局員工消費合作社印製 4340 7 〇 A7 ______B7_______ 五、發明說明（ϊΛ]) 在上述的二部式導引軌(44)，該二導引腿(441)(442)也 可做成平坦對稱的金屬片半部。在此情形，爲了在導引腿 (441)及(442)間造成間隔，在軌背區域中，至少將一狹金屬 片由上放入導引腿(441)(442)之間，並與導引腿(441)(442)焊 接。金屬片之朝內的縱緣遂構成上鋸片的上倚靠位置或導 引件，它可藉自由選擇所焊入金屬片的材料而得到最佳結 果。爲了使鋸片（12)在其凹隙(65)範圍作下方導引’在距上 方金屬片一般對應距離處至少將一金屬片放入二導引腿 ¢441)(442)之間並與它們鏈接。此處也司*藉自由選擇金屬片 材料使鋸片(12)的導引得到最佳結果° (請先閱讀背面之注意ί項再填寫本頁) 裝·！----訂·--------線 經濟部智慧財產局員工消費合祚社印製 25 -It—— — — — — — —-^ -------- ^ --.------- ^ I (Please read the notes on the back before filling out this page) Intellectual Property of the Ministry of Economic Affairs A7 B7 printed by the Bureau's Consumer Cooperative. V. Description of Invention (Λ) Jun (321) is kept in the casing (10). The position of the fixed spring (32) in the y-direction can be accurately defined by using the leaning surface 'provided in the casing (10). The fixed spring (32) holds the upper and lower sides of the balance cymbal (30) with two spring legs (322), and leans against the upper and lower sides of the balance cymbal with prestress. The use of such a fixed spring (32) can ensure that the allowable errors between the components are cancelled out, and the balance cymbal can run without a gap. The balance cymbal (30) surrounds the disc crank (21) with an oval recess (57). In order to clamp the saw blade (12) in a replaceable manner, a clamping device (33) is provided on the casing (10). The clamping device (33) has a fixing plate (34) fixed to the casing (10) (enlarged in the fifteenth figure). On the fixing plate (34), two latch elements are provided on the lower side of the fixing plate (34) facing away from the casing (10), and they are spaced apart from each other in the direction of the sawing stroke, and one of them is designed as "hanging into the Jun" ( 35), and another designed as a resilient "holding sheet" (36) with an insertion opening. The holding metal piece (36) is hung into the opening (341) [the opening (341) is formed on the fixing plate (34)], and is supported by a spring (37) (36) and the fixed plate (34)] apply force to the way of hanging into Jun (35). The holding metal piece (36) has a freely protruding leg (362), whereby the holding metal piece (36) can be pivoted against the elastic force of the spring (37) in the arrow direction (38) of the fifteenth figure. A bolt (39) protrudes from the lower side of the fixing plate (34), the bolt is embedded in a hole of the fixing plate (34), and is connected by resistance welding or thermal riveting of the fixing plate (34). The function of the pin (39), which has a high degree of surface hardness, will be explained later. As shown in the second figure, the driving finger (23) of the driving saw blade (12) is tied in a hole (221) of the connecting rod (22) and a long hole (40) in the fixing plate (34). Lead in. Here, the length of the long hole (40) (fifteenth figure) is longer than the sawing stroke. Therefore, the paper size of 17 papers is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 male S) -------- I --- installed .----- order. — (Please read the Note #Fill this page) 4340 7 0 A7 B7 V. Description of the invention (b) The vibratory reciprocating motion of the finger (23) will not be hindered by the fixed plate (34). Here, the long hole is fixed by a fixed plate (34) Surrounded by the bent flange (342) (Bund) (fifteenth figure), there is ~ a velvet seal (41) impregnated with silicon power on the flange (342) (section First and second picture). The long hole (40) is sealed by a circular cover metal sheet (42), and the cover metal sheet (42) slides on the pile seal (41), thereby sealing the outside of the hand saw. The use of Silicon impregnation allows the fleece seal (41) to have an accurately measured thickness, so that the connecting rod (22) can be installed without stress. For operation, two saw blades (12), a compact saw blade (Buendigsaegeblatt) (Figures 8 and 9), and a so-called "open-cut saw blade" (14, 15, 15, (Figure 17) 'The compact saw blade is warped so that the saw blade back (121) and sawtooth edges (122) are in two planes parallel to each other, and the open-cut saw blade is designed to be flat. The saw blade (12) is accommodated in a guide member in a longitudinally movable manner, and constitutes a separate (and preferably inseparable) component with the equal guide component. This component is hereinafter referred to as a "saw blade card set" or " Saw card set "(43), which is designed to be clamped into a clamping device (33) on the casing (10). Figures 8 and 9 show a saw card set (43) for right-handed and left-handed tight saws. Figures 14, 15 and 17 each show a library card set for engraving. In the embodiments of the eighth and ninth figures, the guide is composed of a guide rail (44), which ties the saw blade (12) and the saw blade back (121) over its entire length, and there are two Guide legs (441) (442), each on one side of the saw blade. In the illustrated embodiment. The guide rail (44) is integrally formed, and the two guide legs (441) (442) are connected to each other by a curved edge (443). Alternatively, the two guide legs (441) (442) can be made separately, and then connected to each other along the longitudinal edge, such as riveting, welding, and the like. The saw blade (12) uses two tenon / hole connection methods [these paper sizes apply to the national standard (CNS > A4 specification (210 X 297 mm)] (谙 read the unintentional matter on the back before filling in this page)) ------- Order -------- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 4340 7 〇A7 ___B7 V. Description of the Invention (Λ) Set to the middle of the saw card group (43) The line (60) is symmetrically] kept in the guide rail, and guided for limited longitudinal movement therein. Each tenon / hole connection means is a slot (58) indicated by a broken line in the saw blade (12) ( See also figure 23) [It extends parallel to the blade back (121)] and a guide tongue (45), which is bent out of the spring leg (441) and into the slot ( 58). These tenon / hole connection means restrict the path that the saw blade (12) can take in the guide rail (44) when it is disassembled from the hand saw, and limit the saw blade (12) on the guide rail. The vertical gap in (44). The slot length of the two slot holes (58) in the saw blade (12) is selected to be longer than the sawing stroke of the saw blade (12). As shown in the sectional view of the tenth figure, There is a protrusion on the inside of the guide leg (441) (46) and ribs (47) protrude, and the saw blade (12) leans on the projections and ribs. The same is true on the inner surface of the guide leg (442). The height of the projections (46) and ribs (47) can be It is adjusted during manufacture, so the same guide rail (44) can accommodate saw blades (12) of different thickness (46) and ribs (47) to reduce the friction of the saw blade (12) in the guide rail (44). To the minimum, and to ensure that there is a certain guiding effect without gap in the full length of the saw blade (12). In order to prevent friction on the curved edge (443) of the saw blade (12), the bending of the curved edge (443) is rounded The corner of the part is left blank, so the edge of the blade back (121) is idling within the radius of curvature of the curved edge (443). This blank part is represented by (59) in the thirteenth figure. The thirteenth figure Also shown. On the inner surface of the guide legs (441) (442), the bumps (46) and ribs (47) can be omitted, and the intermediate metal piece (56) is fixed, and the intermediate metal piece (56) acts as a saw blade ( 12) The sliding function. By selecting the proper material of the intermediate metal piece (56), the friction of the saw blade can be minimized and the wear can be reduced. Two pairs of mutual alignment are formed in the two guide legs (441) (442) Long holes (48) (49), Running on the back of the blade (121), the length is longer than the cutting stroke. Each guide 19 paper size applies to the Chinese national standard (CNS > A4 size (210 X 297 mm)) (Please read the precautions on the back before filling this page > Assembly -------- Order · -------- Line I-Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 4340 7 〇 Α7 ____ Β7 _____ V. Description of the Invention (β) Lead leg (441 The long holes (48) and (49) in (442) are symmetrical to the center line of the guide rail (44). A recess (50) (see also the second figure) is formed in the saw blade (12), and collinear with each pair of long holes (48) (49), so that the driving finger (23) is joined in a shape No way. The two recesses (50) in the saw blade (12) are set symmetrically to the center line (60). In addition, two openings (51) are provided in the guide leg (441). The center line (60) is symmetrical, and two openings (52) coaxial with the opening (51) are provided in the guide leg (442). The openings (51) and (52) are used to receive the protruding bolt (9) on the fixing plate (34) when the saw card set (43) is inserted into the clamping device (33) (fifteenth figure). In order to ensure that the bolt (39) is inserted without any problem, the net width of the opening (51) (52) in the sawing direction is slightly larger than the diameter of the bolt (34), so the opening (51) (52) is slightly oval. . In the area of the openings (51) and (52), a long hole (53) is formed in each of the saw blades (Figures 12 and 23), and the hole length exceeds the sawing stroke, so the sawing stroke is not It will be obstructed by the plug (39) which should be sunk into the opening (51) (52). In order to clamp the saw card group (43) into the clamping device (33) of the hand saw, a clamping element is formed on the guide rail (44). In the embodiment of the eighth to tenth figures, the clamping element has two pairs of tongues (54) (55), which are arranged on a guide leg (441) symmetrically to the center line (60). In this way, each tongue piece (54) is bent at the end of the guide leg (441), and each tongue piece (55) is cut out from the guide leg (441) and bent out near the center line. The clamping device (33) works according to a skibindung principle, and the method is shown as the dotted line in the fifteenth figure: the saw card group (43) is hooked into the "hook fishing" with a tongue (55) ( 35), and by pressing the saw card set (43), the relevant tongue piece (54) is clicked into its "insertion opening" by the "holding metal piece" (36) ejecting. After the "holding metal piece" (36) rebounds, the saw card set (43) is fixed to the fixing plate 20 using "hanging into the Jun" (35) and * holding metal piece "(36) (please read first Note on the back, please fill in this page) Packing -------- Order -------- Printed by the Consumers' Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs This paper is printed in accordance with China National Standard (CNS) A4 (210 X 297 mm) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 4340 7 〇Α7 __Β7_ V. The lower side of the invention description (Λ) (34). The bolt (39) on the lower side of the fixing plate (34) [ It is submerged into the opening (51) (52)] on the one hand to prevent the saw blade (12) from twisting in the guide rail (44) (especially in the case of open-cut saws), and on the other hand to prevent The force acts on the "holding metal piece" (36), and presses it away in a direction to release the clamping device (33). According to the eighth and ninth figures, the right-handed and left-handed with the saw card group (43) The sawing effect can be changed by turning the saw card group (43) in the plane of the saw blade (12). To this end, on the one hand, the tongue on the guide leg (441) of the guide rail (44) (54) (55) A pair Into the clamping device (33), on the other hand hang another pair into the clamping device (33). As all the required openings (51) (52), long holes (48) (49), recesses (50) and long hole (53) have two groups in the saw card group (43) and are set to be symmetrical to the center line (60), so the saw card group (43) is the same in both pivot positions with Hand saw machine cooperation. In the saw card set (43) with an open-cut saw blade (12) shown in the fourteenth and fifteenth figures, the open-cut saw (12) is swollen and designed to be It is flat, and only a part of its blade back (121) is placed in the guide rail (44). The long hole (48) (49) and the opening (51) in the guide leg (441) (442) ( 52) and the recess (50) and the long hole (53) in the saw blade (12) have only a single group. Each pair of tongues (54) (55) is formed on each guide leg (441) and (442) Therefore, the saw card set (43) can be inserted into the clamping device (33) with the guide leg (441) at one time, and inserted into the clamping device (33) with the guide leg (442) once turned. Therefore, for the For right-handed and right-handed people, this hand saw can also be used to perform the best work in hard-to-reach dead corners. In addition, the saw card set (43) is as follows The aforementioned structure. The saw card group (43) with an open-cut saw blade (U) is shown in the seventeenth to twenty-third figures, which is slightly different from the saw card group (43) in the fourteenth and fifteenth figures. Sheet 21 This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) I ^ -------- Order ------- Line I (Please read the unintentional matter on the back first (Fill in this page again) 43 4 0 f 〇 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (,) (12) The guide rail between the guide legs (441) (442) (44 ) Is guided with limited axial movement, and the two guiding legs are connected to each other through a curved edge (443). Because the guide rail (44) only partially covers the saw blade back (121) of the far piece (12), therefore, in order to make the saw blade (12) have a better guiding effect in the guide rail (44), In addition to the tenon / slot connection method [consisting of the slot (58) in the saw blade (12) and the guide tongue (45) bent by the guide leg (441)], the guide leg (441 ) The other two guide segments (64) are die-cast, and they are aligned at intervals in the sawing direction. Here, the die casting action causes the guide segment (64) to lean against the inner surface of the other guide leg (442). Each guide segment (64) is welded to the guide leg (442) using two welding points. By welding the guide rail (44), it can be ensured that the guide rail (44) will not crack at its two edges away from the curved edge (443) (mainly in the front area of the saw blade exit) = from the guide The situation in which the leg (441) is die-cast into the guide segment (64) can be seen particularly in the enlarged views of the nineteenth and twentieth figures. The two guide segments (64) and the guide tongue (45) are die-cast from the same guide leg (44), so that the 'saw blade (12) will not be between the guide segment (64) and the guide tongue ( 45) When the joint position of the drinking room runs, the two guide legs will not shift and deviate, and the allowable deviation of the height of the saw blade (12) in the guide rail (44) can be better. The saw blade (12) has a recess (65) (twenty-three figure) that cooperates with the two guide segments (64). The recess extends parallel to the saw blade back (121) and can be at the edge of the rear saw blade. (123) [It extends perpendicular to the blade back (121)] Run freely so that the blade (12) moves into the guide rail (44). The width of the guide recess (65) is slightly larger than that of the guide segment (64). Width, so the two sides of the saw blade (12) can maintain a gap in the width of the guide segment (64), so the two sides of the saw blade (12) can maintain a gap in the guide segment (64) for guidance. The distance from the upper edge of the recess (65) to the back of the saw blade (121), and the curvature of the upper edge of the guide segment (64) and the guide rail (43). 22 In this paper standard _ house standard (CNS) A4 size (210 X 297 (common) Μ -------- * Order — ------- ^ »(Please read the note on the back before filling this page) 4340 7 Δ7 B7 V. Description of the invention (4 ) The accuracy of the distance between the bottom of the edge (443) must be accurate to minimize the height gap of the saw blade (12) in the guide rail (44). Running freely in the direction by the recess, 'the saw blade (12) can be pushed into the prepared guide rail (44) from the front "and then the guide tongue (45) on the guide leg (441) ) Is bent into the slot (58) of the saw blade (12), so that the saw blade (12) is held in the guide rail (44) in a longitudinally movable manner. In another embodiment of the saw card group (43), which is not shown in the figure, the guide segment is replaced by at least one intermediate metal sheet, which is leaning on the inner surface of the two guide legs (441) (442). And it is fixed on it with a welding point, and forms a rest part or guide for the saw blade (12). By using such an intermediate metal sheet, a high clearance can be adjusted for various saw blades during installation, and the material can be freely selected 'to make the hardness of the guide member higher than that of the saw blade (12). As in the saw card group of the eighth, ninth and fourteenth figures, the saw blade (12) leans on the rib (47) (second picture ^ 1) with its saw blade surface in the guide rail (44). The longitudinal guide legs (441) (442) are die-cast and protrude inside the guide legs (441) (442). The height of the ribs (47) can be adjusted during manufacture, so that the same guide rail (44) can accommodate saw blades (12) of different thicknesses. Here, the rib (47) also minimizes the friction of the saw blade (12) in the guide rail (44), in order to avoid the greater friction of the saw blade (2) on the curved edge (443), here The corner of the rounded portion of the curved edge (443) is also left empty, so the edge of the blade back (121) can run freely within the radius of curvature of the curved edge (443). This blanking method is the same as that shown in Figure 13. To further reduce friction, at the front transverse edge (444) of the guide rail (44) [it extends perpendicular to the curved edge and forms the so-called running edge of the saw blade (12), and the saw blade (12) protrudes from the front Outside the horizontal edge] in the guide 23 paper sizes applicable to Chinese National Standard (CNS) A4 specifications (210 X 297 male «) (Please read the precautions on the back before filling this page) ^ --- II-- --I --- ^ Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 4340 7 0 A7 B7 V. Description of the invention (/) The bottom of the curved edge (443) of the rail (44) is processed with a grease-filled capsule groove (66 ) (Figure 22). The oil storage tank in the grease capsule groove (66) supplies grease to the front edge (444) of the guide rail (44) when sawing, and is responsible for providing a gap between the saw blade (12) and the guide leg (441) (442). Good lubrication. Here, the front transverse edge must be completely seam-free at least on the inner edge of the guide leg (441) (442) facing the saw blade (12). In order to clamp the saw card set (43) into the set In the clamping device (33) on the saw, the clamping tongue (54) is formed on the two guide legs (441) (442) in the same way, so the saw card set (43) can use the guide legs at one time (441) Insert the clamping device (33), and turn it another 180 ° to guide the leg (442) into the clamping device (33). For compact saws, the saw card set (43) is only provided with a pair of clamping tongues (54) and (55). Depending on the pair of tongues that are attached to the guide leg (441) or (442) on the guide rail (44), it can be changed into a right-handed or left-handed open-cut saw depending on the omission. As described in the saw card set shown in Figures 8 and 9, the saw card set (43) shown in Figures 14 or 17 consists of two separately manufactured guide legs (441) (442), To this end, for example, one of the guide legs is truncated near the rail back to create a gap between the guide legs (441) (442) to accommodate the saw blade (12), and this truncated portion leans against the other The guide leg is connected to the guide leg with a solder joint in an inseparable manner. The advantage of this two-part design of the guide rail (44) is that the program is safer because, on the one hand, the bending operation required in the case of the integrated guide rail (44) is omitted, and on the other hand, each The guide leg itself can be corrected. On the contrary, the advantages of the integrated guide rail (44) with a curved edge (443) are: lower installation costs, and all work functions are integrated in one component, which is the best solution ergonomically and visually Program. 24 This paper size applies to the national standard (CNS) A4 specification (210 X 297 mm). F Qi first read the back v; i intend to fill in this page) Install IIIII Ϊ I --- I. Intellectual Property Bureau of the Ministry of Economic Affairs Printed by employee consumer cooperatives 4340 7 〇A7 ______B7_______ 5. Description of the invention (ϊΛ)) In the above-mentioned two-part guide rail (44), the two guide legs (441) (442) can also be made of flat symmetrical metal Film half. In this case, in order to create a gap between the guide legs (441) and (442), at least one narrow metal sheet is placed between the guide legs (441) (442) from above in the region of the rail back, and The guide legs (441) (442) are welded. The inwardly facing longitudinal edge of the metal piece constitutes the upper rest position or guide of the upper saw blade, which can obtain the best results by freely selecting the material of the metal piece to be welded. In order for the saw blade (12) to be guided downward in the range of its recess (65), at least one metal piece is placed between the two guide legs (441) (442) at a generally corresponding distance from the upper metal piece and is They are linked. Here too * by freely selecting the metal sheet material to achieve the best results for the guidance of the saw blade (12, please read the note on the back before filling this page) ---- Order · -------- Line Printed by the Consumer Consumption Agency of the Intellectual Property Bureau of the Ministry of Economic Affairs 25-