558472 A7 ___B7_ 五、發明說明（I ) 【本發明之技術領域】 本發明提出一種包含具有齒線之狹長刀片與一把手之 手鋸，該刀片之獨特齒形具有向後鋸比向前鋸更有效率的 刃，該把手包含一狹長的握柄與一附屬部件，該握柄具有 較刀片爲短的長度，該附屬部件與握柄延伸成爲一般鈍角 並且藉由一接頭連接在刀片的後面部分，該接頭允許刀片 相對於把手旋轉，並且與一固定機件共同運作，該固定機 件包含一可插入刀片後面一般爲半圓形邊緣部分周圍中之 許多的分散凹處之一的固定構件，便於刀片在相對於把手 的不同角度位置上定位，上述的握柄包含兩側壁，兩側壁 由一種共同背部所連接，並且在一齒形保護裝置中限定第 一槽口的排列用以和第二槽口共同運作，該齒形保護裝置 可沿著握柄之延伸方向在一無作用的位置與一作用的位置 間移動，並且在該位置上，該刀片的齒線可以被同時的插 入上述所說的兩個槽口中；該握柄以一過渡部分合倂到附 屬部件上，該過渡部分較附屬部件之關節保護後面部分爲 窄；第一個凹處定位在刀片的下緣，將刀片固定在插入握 柄和齒形保護裝置兩者之中的位置，第二個凹處與第一個 凹處相距一至少125度的角度，用以將刀片固定到操作位 置，該角度爲刀片相對於把手所成之角度。 發明與前技狀況之背景 根據申請人EP 0910942 A2 (在SE 9703788-1之前） 與WO 99/20099 (在SE 9703790-7之前）已爲人所熟知 的申請書中之用於修剪樹木和相似應用的手鋸，該手鋸的 4 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)558472 A7 ___B7_ V. Description of the Invention (I) [Technical Field of the Invention] The present invention proposes a hand saw that includes a narrow blade with a tooth line and a handle. The unique tooth shape of the blade with a backward saw is more efficient than a forward saw The handle includes a narrow grip and an accessory part, the grip has a shorter length than the blade, the accessory part and the grip extend into a generally obtuse angle and is connected to the rear part of the blade by a joint, the The joint allows the blade to rotate relative to the handle and works in conjunction with a fixed mechanism that includes a fixed member that can be inserted into one of the many scattered recesses around the generally semicircular edge portion behind the blade to facilitate the blade Positioned at different angular positions relative to the handle, the above-mentioned grip includes two side walls, and the two side walls are connected by a common back, and defines a first slot arrangement in a tooth-shaped protection device for a second slot Working together, the tooth-shaped protection device can move between an inactive position and an active position along the extension direction of the grip, and In this position, the tooth floss of the blade can be simultaneously inserted into the two notches mentioned above; the handle is combined with the attachment part with a transition part, which is narrower than the back part of the joint protection of the attachment part ; The first recess is positioned at the lower edge of the blade, and the blade is fixed in the position inserted into both the grip and the tooth-shaped protection device; the second recess is at least 125 degrees away from the first recess , Used to fix the blade to the operating position, the angle is the angle of the blade relative to the handle. Background of the invention and state of the art According to applicants EP 0910942 A2 (prior to SE 9703788-1) and WO 99/20099 (prior to SE 9703790-7) the well-known applications for pruning trees and similar Applied hand saw, 4 paper sizes of this hand saw are applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)
558472 A7 ____B7_ 五、發明說明（^ ) 刀片永久的以一被定義的鈍角關係剛性地連接至一把手上 ，更明確的說，該刀片係藉由兩個分開的螺栓所固定到一 個相對堅固的附屬部分，刀片相對於把手握柄部件的鈍角 定義出該刀片相對於該握柄的角度。在該手鋸之較佳實施 例中，介於握柄與附屬部分之間的鈍角大約相當於132度 ，雖然該鈍角可能在125度與140度間改變。使用一分離 式的刀鞘是爲了當作齒形保護裝置並且防止被刀片的尖齒 傷害，該刀鞘與手鋸一起被交付與攜帶。 如上所述之手鋸有一個缺點就是一分離刀鞘或齒形保 護裝置明確的被需要，該刀鞘或齒形保護裝置使製造昂貴 ，並且容易對於在各種情況下遺失。爲了這個理由，申請 人已經發展了一種手鋸，根據我們對於齒形保護器的需要 使齒形保護裝置成爲該手鋸不可或缺的零件。這種鋸子基 本上被設計成爲槪論中所描述的樣子，並且被進一步的描 述於專利申請書SE 98〇3675-9之中。在此種手鋸中，該 齒形保護裝置被製造成好像是U形橫截面的蓋子狀零件， 該齒形保護裝置的的一端使用類似絞鍊方式連接到把手的 握柄部件的自由下端，該自由下端也至少有一部份是U形 橫截面。藉由該絞鍊，該蓋子狀零件可以在第一作用位置 與第二無作用位置中旋轉，該第一作用位置就像是握柄的 延伸，允許刀片和其齒型插入握柄上形成的槽口與U形橫 截面的蓋子狀零件中，該第二無作用位置在蓋子狀零件圍 住握柄之處。在那樣的例子中，該手鋸主要的也同樣作爲 修剪枝幹之用。基於這個原因，手鋸被製造成一種刀片只 5 衣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)558472 A7 ____B7_ V. Description of the Invention (^) The blade is permanently connected to a hand with a defined obtuse relationship. More specifically, the blade is fixed to a relatively strong accessory by two separate bolts. In part, the obtuse angle of the blade relative to the handle grip component defines the angle of the blade relative to the handle. In a preferred embodiment of the hand saw, the obtuse angle between the grip and the attachment is approximately 132 degrees, although the obtuse angle may vary between 125 and 140 degrees. A separate scabbard is used as a tooth-shaped protection device and to prevent injury from the blade's sharp teeth, which is delivered and carried with the hand saw. A disadvantage of the hand saw as described above is that a separate scabbard or toothed protection is explicitly needed, which makes the manufacturing expensive and is easy to lose in various situations. For this reason, the applicant has developed a hand saw that makes the tooth protection device an indispensable part of the hand saw according to our needs for a tooth protector. This saw is basically designed as described in the theory, and is further described in patent application SE 98 03675-9. In this type of hand saw, the tooth-shaped protection device is manufactured as a cover-shaped part with a U-shaped cross-section, and one end of the tooth-shaped protection device is hinged to the free lower end of the grip member of the handle. The free lower end is also at least partially U-shaped in cross section. By means of the hinge, the cover-like part can be rotated in a first active position and a second non-active position. The first active position is like an extension of the handle, allowing the blade and its tooth profile to be inserted into the handle. In the notch and the U-shaped cross-section cover-like part, the second inactive position is where the cover-like part surrounds the handle. In that case, the hand saw is also used mainly for pruning branches. For this reason, the hand saw is made into a blade only. The paper size is applicable to the Chinese National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)
558472 A7 五、發明說明（々） 能夠位於相對於把手的兩個不同角度上的方式，明確的_ ，一個是使刀片與握柄成13〇到I35度的操作位置，而第 二個是使握柄與刀片在蓋子狀零件未展開下成一個非 的角度差的插入位置。爲了定義這兩種角度位置，刀 後端提供了兩個與把手的固定機件共同運作的凹處， 是第一個凹處位於刀片的下緣，而第二個凹處與第〜 處距離130到135度的角度距離。 雖然根據SE 9803675-9的改良式手鋸顯然的適合修剪 普通花園的目的，並且也有限的延伸至某些木工的自的， 該手鋸的效益被只有一個操作位置所限制了。 發明的目的與特徵特性 本發明旨在改善在SE9803675_9中的手鋸，以不只是 爲了修剪花木的目的，並且也可達到主要在木工上使用目 的方式，使該手鋸可以更有效的被使用。本發明一基本的 目的因此係爲創造一種符合之前所描述的各種類型的手鋸 ，但不只能用於把手和手握的部分與該工件間有一明顯距 離的情況下（就像切割不同長度的木材、樹枝或相似東西 的情況），而也可用於當把手與手同時接近一支撐平面時 齊平的切割（就像在屋頂上以屋瓦支撐切割木條時的情況 )。有效的用鋸與人體工學的配合應該被單獨的保證’以 一給定的角度設定以配合該鋸子在各種不同的目的使用之 下。以一額外的觀點來看，該發明也致力於改良手鋸的齒 形保護裝置。 根據本發明，其基本目的已經藉著申請專利範圍第一 6 Γ 请先閱讀背面之注意事項再填寫本頁> 訂· · 私紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）. 558472 A7 ___B7____ 五、發明說明（qo 項中之特徵部份所提到的特點實現了。較佳實施例在附屬 申請專利範圍中有更進一步的定義。 技術狀態的進一步討論 在德國低階專利DE 29613265 U1中描述一手鋸，該 手鋸具有沒有關節保護的把手，爲了允許在一支撐表面用 鋸，可從刀片的後端向前與向後的旋轉至傾斜的位置。然 而，在上述的情況，用鋸能力將會是中等的，因爲當必要 的拉力施於向上的把手時，該把手將會使刀片在每次向後 鋸的動作中承受向上的力量向量。另一個鋸子的實施例具 有關節保護，並且可應用在被支撐的工件上用鋸，但是在 那種情況，該關節保護裝置延伸到在刀齒動作的直線之下 ;有些東西將會使工件以任何方式均不可能用鋸。 由於DE 198 08 705 A1以前即爲人所熟知，一含刀 片的手鋸可調整與把手有關係的不同操作位置。然而，在 這個情況下，該刀片安裝在一種非常龐大的的附屬部件上 ，該附屬部件在齒線的線性動作路徑下明顯的突出，該手 鋸必然不可能完全的鋸斷一放在支撐表面上的工件。 US 2747631描述一種包含一把手與一刀片之手鋸，該 把手以一堅固的握柄與一相對細長的附屬部件構成，該刀 片連接到附屬部件上並且可相對附屬部件調整不同的角度 。在這個例子中，刀片設定位置的不同是由許多定位在附 屬部件上的等距的銷貫穿刀片上一定數量等距的孔與一定 位主體所造成的，該定位主體靠一有螺紋的螺栓裝置連接 在附屬部件上面，該螺栓裝置使刀片壓迫附屬部件。爲了 7 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ^ (請先閱讀背面之注意事項再填寫本頁) · I I I I I I I 訂-----— I! 558472 A7 ____B7_ 五、發明說明（ς ) 在不同的角度位置設定之間調整刀片，該定位主體必須被 鬆開然後在銷決定設定位置並插入欲插入之連續孔之後再 重新裝設。更明確的說，該手鋸並未包含任何固定機件或 如目前發明之類型的凹處，也沒有包含任何種類的齒形保 護裝置。 一根據DE 29613265 U1中的手鋸被攻擊的缺點也同樣 的從US 5979065中爲人所知。從US 2621689中已經知道 一手鋸可以一螺栓裝置調整一定數量的設定位置，該螺栓 裝置必須以US 2747631相同的方法來鬆開，並且該螺栓裝 置並不允許更進一步的將一放於支撐表面的工件完全鋸斷 〇 【圖式簡單說明】 在圖式之間： 圖一係一槪要的、部分剖面側視圖，展示一依據本發 明之手鋸，該手鋸之刀片在相對於和其相連之把手之第一 操作位置； 圖二係一相似的側視圖，在一延伸的位置展示一把手 的齒形保護裝置零件； 圖三和圖四係部分側視圖，以另外兩種不同的操作位 置展示該手鋸； 圖五係一側視圖，展示該手鋸的刀片插入把手和齒形 保護裝置兩者之中，位於一無作用的位置； 圖六係一分解立體圖，展示手鋸把手中的三個部件； 圖七係一把手之握柄部件之橫截面； 8 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)558472 A7 V. Description of the invention (々) It can be located at two different angles relative to the handle. Clear _, one is to make the blade and the handle at an operating position of 13 to I35 degrees, and the second is to make The grip and the blade are inserted at a non-angled difference position without the lid-shaped part being unfolded. In order to define these two angular positions, the rear end of the knife provides two recesses that work together with the fixed part of the handle. The first recess is located at the lower edge of the blade, and the second recess is at a distance from the ~ An angular distance of 130 to 135 degrees. Although the modified handsaw according to SE 9803675-9 is clearly suitable for the purpose of trimming ordinary gardens, and also extends to some carpenters' own, the benefits of the handsaw are limited by only one operating position. Objects and characteristics of the invention The present invention aims to improve the hand saw in SE9803675_9, not only for the purpose of trimming flowers and trees, but also to achieve the purpose of using it mainly for carpentry, so that the hand saw can be used more effectively. A basic object of the present invention is therefore to create a handsaw that conforms to the various types of hands described previously, but not only for cases where there is a significant distance between the handle and the grip part and the workpiece (like cutting different lengths of Wood, twigs, or the like), and can also be used to cut flush when the handle and hand approach a supporting surface at the same time (like when cutting wood strips on a roof with roof tiles). The effective ergonomic fit of the saw should be individually guaranteed 'to be set at a given angle to match the use of the saw for a variety of purposes. From an additional point of view, the invention also seeks to improve the tooth protection of a hand saw. According to the present invention, the basic purpose of the patent application has already been covered by the first patent application. 6 Γ Please read the precautions on the back before filling in this page. · · Private paper size applies to China National Standard (CNS) A4 (210 X 297 public) %). 558472 A7 ___B7____ V. Invention description (The features mentioned in the feature section of item qo have been realized. The preferred embodiment is further defined in the scope of the patent application for subsidiary applications. Further discussion of the state of technology is low in Germany Patent DE 29613265 U1 describes a hand saw which has a handle without joint protection. In order to allow the saw on a supporting surface, it can be rotated forward and backward from the rear end of the blade to an inclined position. However, in the above, In the case of a saw, the ability to use the saw will be medium, because when the necessary pulling force is applied to the upward handle, the handle will cause the blade to withstand the upward force vector in each backward sawing action. Another saw embodiment It has joint protection and can be applied to a supported workpiece with a saw, but in that case, the joint protection device extends to a straight line in the action of the tooth Some things will make the workpiece impossible to saw in any way. Since DE 198 08 705 A1 was well known before, a hand saw with a blade can adjust different operating positions related to the handle. However, in In this case, the blade is mounted on a very large accessory part that protrudes significantly under the linear motion path of the tooth line. The hand saw must not be able to completely cut a workpiece placed on the support surface. US 2747631 describes a hand saw comprising a handle and a blade, the handle consisting of a sturdy handle and a relatively elongated accessory part, which is connected to the accessory part and can be adjusted at different angles relative to the accessory part. Here In the example, the difference in the setting position of the blade is caused by a number of equidistant pins positioned on the auxiliary parts penetrating a certain number of equidistant holes in the blade and a positioning body, which is connected by a threaded bolt device in Above the accessory, the bolt device presses the blade against the accessory. For 7 paper sizes, the Chinese National Standard (CNS) A4 is applied Grid (210 X 297 mm) ^ (Please read the precautions on the back before filling this page) · IIIIIII Order -----— I! 558472 A7 ____B7_ V. Description of the invention (ς) Set at different angle positions To adjust the blade, the positioning body must be loosened and then reinstalled after the pin determines the setting position and is inserted into the continuous hole to be inserted. To be more specific, the hand saw does not include any fixed mechanism or as currently invented The type of recess does not contain any kind of toothed protection. A disadvantage of the hand saw according to DE 29613265 U1 is also known from US 5979065. It is known from US 2621689 that a hand saw can adjust a certain number of setting positions with a bolt device. The bolt device must be loosened in the same way as US 2747631, and the bolt device does not allow further placement of a bolt on a supporting surface. The workpiece is completely sawed off. [Brief description of the drawings] Between the drawings: Figure 1 is a side view of an essential part of a section, showing a hand saw according to the present invention, the blade of the hand saw is oppositely connected to it. The first operating position of the handle; Figure 2 is a similar side view, showing the toothed protection device parts of the handle in an extended position; Figures 3 and 4 are partial side views, showing in two different operating positions The hand saw; Fig. 5 is a side view showing the blade of the hand saw is inserted into both the handle and the tooth-shaped protection device in an inactive position; Fig. 6 is an exploded perspective view showing three of the hand saw handles Figure 7: Cross section of the handle part with one handle; 8 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the back first Note to fill out this page)
558472 A7 _^ 五、發明說明（& ) 圖八係一類似的把手橫截面’該橫截面只展示該齒形 保護裝置部件； (請先閱讀背面之注意事項再填寫本頁) 圖九係一部分剖面側視圖展示在刀片與手鋸之把手間 關節的區域； 圖十係一在固定機件區域的把手橫截面； 圖十一係一類似的橫截面，展示一與把手分離之固定 機件之銷零件； 圖十二係刀片後端部分的局部放大側視圖； 圖十三係一典型刀片齒線的局部放大側視圖。 【元件符號說明】 1 把手 2 刀片 3 齒形保護裝置 4 齒形 5 長齒形 6 短齒形 7 後切割邊緣 8 前切割邊緣 9 握柄部件 10 附屬部件 11 接頭 12 線性上表面 13 假想中心線 14 不含齒形的後面部分 9 本紙張尺度適用中國國家標準（CNS)A4規格（210 x 297公釐） 第一槽口 固定機件 圓柱銷 頭 孔 較窄的收縮部 較大的收縮部 半圓形邊緣 第一凹處 第四凹處 第二凹處 第三凹處 彈簧 直的邊緣部分 上緣 過渡部分 導圓角凹處 後面部分 下側 圓形的末端部分 背部 側壁 側壁 背部 10 (請先閱讀背面之注意事項再填寫本頁) 558472 A7 B7 五、發明說明（Ί ) 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 34 35 36 37 38 39 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 558472 A7 ---------- 五、發明說明（f ) 40 第二槽口 41 凹處 42 半件 43 半件 44 狹長的凹處 45 溝 46 保持構件 47 絞練裝置 48 馬蹄形的外凸緣 49 窄的頸部 50 缺口 51 擋塊 52 果核狀的凹處 (請先閱讀背面之注意事項再填寫本頁) 訂---------% 【本發明之較佳實施例詳細說明】 在圖一至圖五中，展示了在不同的位置下根據本發明 之手鋸，該手鋸包含一把手1、一刀片2和一齒形保護裝 置3。該刀片2含有形成一列的齒形4，該齒線較佳地係爲 直線，並且其細部係係依從圖十三中所顯示者。就像圖十 三所發表的，該齒線包含兩組不同的齒形5、6，有一些齒 形較其他的齒形長。更明確的說’該齒線包含兩組以上的 長齒形5，該長齒形5被短齒形6所分開。每一個長齒形5 被一切割後緣7以一相等於12度的前傾角α所硏磨，每一 個切割前緣8之後隙角点等於24度。該切割邊緣被磨得很 尖銳並且結束在一尖銳的點上。因爲該前傾角α比後隙角 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 558472 A7 ________Β7___ 五、發明說明（1 ) 召小很多，切割後緣7將會比切割前緣8好切很多；該切 割後緣7在實際的應用上，代表了用鋸動作的主要部分是 表現在刀片向後拉的時候。該鄰接於較長齒形組5的較短 的齒形6以一大約爲32度之上後隙角r硏磨。該長齒形的 長度能夠到4.8公釐，而長、短齒形長度的差距約爲〇·8 公釐。在各自的切割邊緣被磨光之後，該短齒形6設定爲 增進碎屑的移除。 儘管用鋸的大部分鋸開作用係於該手鋸被拉向後方時 由向後方向之具侵略性的切割邊緣7所執行，當該，了一 明確的用鋸動作，而較不具侵略性的切割邊緣8也同樣的 在將該手鋸向前推時執行了一定之鋸開作用。 圖一至圖五中所示的把手1包含一狹長的握柄9和附 屬部件（整體以10來標示），該把手基本上以一鈍角向握 柄9延伸直到刀片2之上，該刀片2特別地藉由一接頭11 連接至把手上。該鈍角係被界定爲一基本的平面或線性上 表面12與一穿過握柄9的假想中心線13相交之角度。如 實施例所示，該鈍角相當於大約135度，但也可能在130 度到140度的範圍之內。 在圖九到圖^^一中可以看到一刀片2之後面不含齒形 的部分14被插入於一位於附屬部件10之開口的槽口 15中 (參閱圖九至圖^^一），且係藉由接頭11連接到附屬部件 上，該接頭可以以一延伸跨過槽口 15之簡單的銷或螺栓而 被鬆開。爲了將刀片固定在一欲固定的位置上，一固定機 件16係被提供，其包含一具有頭18之圓柱銷17。該圓柱 12 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ------丨丨tr---------^# (請先閱讀背面之注意事項再填寫本頁) 558472 A7 ^__B7_ 五、發明說明（β ) 銷17係位於孔19中，該孔19係延伸穿過該附屬部件10 ，特定地與槽口 15形成直角。該圓柱銷17以一習知的方 法提供兩個軸向分隔而具有不同直徑的收縮部20、21。如 圖六、圖九與圖十二所示，刀片2的後端部分14實質上是 半圓形的，在半圓形的周邊區域22切下四個分隔的凹處 23、24、25、26，該四個凹處的位置如下所描述。每一個 ，這樣的凹處均有一局部的圓形，其直徑係與圓柱17銷上之 較大的收縮部21相同。該圓柱銷17通常藉由一彈簧27支 承在外部末端的位置，而該較大的收縮部21與槽口 15在 相同的高度，當該圓柱銷與23至26之凹處齧合時，藉此 該銷係將刀片固定於欲定位之角度位置上。當該刀片欲被 鬆開而旋轉時，該圓柱銷17係以對抗彈簧27之力量被壓 入孔19中，直到較窄的收縮部20位於與槽口 15相同的平 面上。該收縮部20具有一與實際凹處的深度相比夠小的直 徑使圓柱銷與凹口間產生一個距離，該距離允許刀片從實 際上的凹處中被旋轉。 參照至圖十二，其展示了凹處23到26的位置。該第 一凹處23位於一直的邊緣部分28，該凹處23與齒線4的 一端交會，並且該凹處之另一端合倂到半圓形的邊緣22。 明確的說，該凹處23位在直邊28與半圓形的邊緣22的過 渡地帶。如所繪的圖所示一樣的淸楚，該直邊部分28在與 齒形尖端延伸出的假想線L有一段距離的位置，並且從齒 線開始位置稍微往上。當齒形4的高度爲如上所述之4·8 公釐時，想像的線L與直邊28前端之間的實際距離大約 13 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) ---1 I I I I ^ ·11111111 558472 A7 ____B7__ 五、發明說明（I)) 爲8公釐。 一第二凹處25定義出刀片最普遍的操作位置，該第二 凹處25與第一凹處23以大約134度在外圍分開。 根據本發明，一第三凹處26也同樣被提供，與第二凹 處25分開大約爲40度。另外，在第一凹處23與第二凹處 25之間，有一個第四凹處24與第一凹處分開大約99度。 第一凹處23與第四凹處26所成之角度以圖上之5表示， 並且其他兩凹處所成的角度各自表示爲e與Γ。在此實施 例之角度5爲99度，此角度値可能在95到105度的範圍 內變化。相似地，該角度ε可能會與35度不同，但是會在 30度到40度的範圍內，而該角度Γ可能會在35至45度 的範圍內。在所有情況下，該第一凹處23與第三凹處26 所成的角度總共應該在17〇度到180度之間。如較佳實施 例所示，第一凹處與第三凹處所成的角度總共合計爲176 度。 在圖十二中的刀片2有一上緣29。在刀片的後面部分 ，該上緣29大約平行於齒線4與齒形尖端之延伸線L。 圖五與圖九表現出把手的附屬部件10之基本幾何形狀 。與在WO 99/20099中描述的手鋸的方式一樣，該握柄9 以一相對狹小的過渡部分30合倂至附屬部件10上，在該 過渡部分30之內緣有一輕微的導圓角凹處31鄰接於一附 屬部件10後面變厚的部份32。該附屬部件10之該後面部 分32被當作一關節防護裝置來確保使用者的手不會沿著把 手向前滑到刀片上。該附屬部件被一上側12和一下側34 14 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^^- (請先閲讀背面之注意事項再填寫本頁) 558472 A7 ___B7_ 五、發明說明（β ) 所限制。與根據WO 99/20099之鋸子的附屬部件相對照（ 因爲該鋸子的上側與下側基本上是平形的，所以該附屬部 件體積較爲龐大）’該附屬部件1〇在此例子中係以一般向 一圓形的末端部分35向前漸漸減少的形狀。更明確的說’ 該附屬部件的上側與下側就像圖五中所看到的使彼此形成 一尖銳的角度。在此較佳實施例中，角度々大約爲36度 (應該介於29度到34度的範圍之內）。當附屬部件這個 術語在本申請書中被使用時，應該要記得該附屬部件係由 兩個以一槽口 15分開的半個所構成。附屬部件上漸漸變細 形狀在技術上的效果將會以提到圖四中所展示的功能狀態 被更進一步的描述。 參照至圖六到圖八，這些圖展示了把手上的握柄9零 件以兩邊的壁37組成一堅固的架構，該壁37以一共同背 部36連結並被一槽口 15所分開，該握柄9在附屬部件10 中係槽口 15之添附物。該槽口 15在接下來的文章中被稱 作第一槽口。類似的，該齒形保護裝置構件3包含兩個以 —共同背部39所互相連接的側壁38並且被第二槽口 40所 限制。該齒形保護裝置3之特徵係在於具有一滑座形狀， 該滑座形狀位於把手之握柄部件9之凹處41之中。該滑座 可在無作用位置與作用的保護伸出位置間作縱向的位移， 該無作用位置以虛線展示於圖一、圖三與圖四之中，該作 用保護伸出位置如圖二與圖五所示。如圖七與圖八中淸楚 的顯示，該滑座3基本上有一個一般的橢圓橫截面，該橢 圓橫截面與凹處41之橢圓橫截面一致。 15 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） —I — I--I I I I I - — — III — — ^ -------I I (請先閱讀背面之注意事項再填寫本頁) 558472 A7 ______B7 _ 五、發明說明（6 ) 圖六展示出整個把手係由兩個以聚合物做成的半件42 、43所構成。當該兩個半件42、43需要以一如膠合或焊 接的適當方法被合在一起時，該兩個半件42、43被製造成 壓在一起的外部凸圓的曲線與內部的平面。在內部的平面 ，每一半件42、43具有一狹長的凹處44，該凹處44開口 朝向握柄9的自由下端。將兩半件42、43合在一起，兩個 分別在兩半件42、43的凹處44形成上面所提到的凹處41 。在每一個凹處的底端具有一溝45，該溝45的兩端與握 柄的兩端具有一些距離。這些溝與兩個具有類似突出物形 狀的保持構件46共同運作，該保持構件位於滑座3的外側 接近溝的內端。當該滑座被拉出作用的保護位置，該保持 構件46則確保滑座被把手擋住而不致脫離。 在滑道3外端部分的一邊有一個跟W0 99/20909同類 型的絞鍊裝置47。眾所週知的，該絞鍊裝置包含一大體上 馬蹄形的外凸緣48和一窄的頸部49，該窄的頸部49位於 該凸緣與滑道的的外部之間。該絞鍊裝置被當作允許鋸子 與WO 99/20909中所描述相同類型的像衣服一樣架設的支 撐架夾互相連接，該支撐架夾包含一個鑰匙孔形狀的凹口 好讓絞鍊裝置可以勾在裡面並且鋸子可以相對於支撐架夾 搖擺，並且也可以使鋸子容易與支撐架分離。該握柄部件 的一半件43具有一個缺口 50以接受該絞鍊裝置47。該缺 口 50開口在握柄的自由端並具有一個擋塊51。當該滑座3 被推入凹處41的內端位置中，該絞鍊裝置47的窄的頸部 49進入缺口 50並且被與在絞鍊裝置中果核狀的凹處52相 16 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)558472 A7 _ ^ 5. Description of the invention (Figure 8) A similar handle cross section 'This cross section only shows the tooth-shaped protection device parts; (Please read the precautions on the back before filling this page) Figure 9 series Partial cross-sectional side view shows the area of the joint between the blade and the handle of the hand saw; Figure 10 is a cross section of the handle in the area of the fixed mechanism; Figure 11 is a similar cross section showing a fixed mechanism separated from the handle Fig. 13 is a partially enlarged side view of a typical blade tooth line of a twelve series blade. [Explanation of component symbols] 1 handle 2 blade 3 tooth protection 4 tooth 5 long tooth 6 short tooth 7 rear cutting edge 8 front cutting edge 9 grip part 10 accessory part 11 joint 12 linear upper surface 13 imaginary center line 14 The rear part without tooth shape 9 This paper size is in accordance with Chinese National Standard (CNS) A4 (210 x 297 mm) The first notch fixing part The cylindrical pin head has a narrower shrinkage and a larger shrinkage half Round edge first recess fourth recess second recess third recess spring straight edge part upper edge transition part round corner recess back part lower round end part back side wall side back 10 (please first Read the notes on the back and fill in this page) 558472 A7 B7 V. Description of the invention (Ί) 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 34 35 36 37 38 39 Standard (CNS) A4 specification (210 X 297 mm) 558472 A7 ---------- V. Description of the invention (f) 40 Second notch 41 Recess 42 42 half 43 half 44 At 45 groove 46 retaining member 47 Slinging device 48 Horseshoe-shaped outer flange 49 Narrow neck 50 Notch 51 Stopper 52 Kernel-like recess (Please read the precautions on the back before filling this page) Order --------- [Detailed description of the preferred embodiment of the present invention] In Figs. 1 to 5, a hand saw according to the present invention is shown in different positions. The hand saw includes a handle 1, a blade 2 and a tooth-shaped protection device 3 . The blade 2 contains a tooth profile 4 forming a row, the tooth line is preferably a straight line, and the details thereof follow those shown in FIG. As published in Figure XIII, this tooth line contains two different sets of teeth shapes 5, 6 and some of them are longer than others. More specifically, 'the tooth line includes more than two sets of long tooth shapes 5, and the long tooth shapes 5 are separated by the short tooth shapes 6. Each long tooth profile 5 is honed by a cutting trailing edge 7 with a forward inclination angle α equal to 12 degrees, and the clearance angle point after each cutting leading edge 8 is equal to 24 degrees. The cutting edge is sharpened and ends at a sharp point. Because the forward angle α is larger than the backlash angle, the paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) 558472 A7 ________ Β7 ___ 5. Description of the invention (1) The cutting edge 7 will be much smaller than the cutting edge 7 The leading edge 8 is much better; in practical applications, the cutting trailing edge 7 represents that the main part of the sawing action is when the blade is pulled backward. The shorter tooth profile 6 adjacent to the longer tooth profile group 5 is honed at a large backlash angle r above approximately 32 degrees. The long tooth profile can be up to 4.8 mm, while the difference between the long and short tooth profile lengths is approximately 0.8 mm. After the respective cutting edges have been polished, the short tooth profile 6 is set to promote chip removal. Although most of the sawing action of the saw is performed by the aggressive cutting edge 7 in the backward direction when the hand saw is pulled backwards, when this is done, a clear saw action is used, rather than the less aggressive The cutting edge 8 also performs a certain sawing action when the hand saw is pushed forward. The handle 1 shown in FIGS. 1 to 5 includes a long and narrow grip 9 and an accessory part (indicated by 10 as a whole). The handle basically extends at an obtuse angle toward the handle 9 up to the blade 2. The blade 2 is particularly The ground is connected to the handle by a connector 11. The obtuse angle is defined as the angle at which a substantially planar or linear upper surface 12 intersects an imaginary centerline 13 passing through the handle 9. As shown in the examples, this obtuse angle is equivalent to about 135 degrees, but may be in the range of 130 degrees to 140 degrees. It can be seen in FIGS. 9 to ^ ^ 1 that the toothless portion 14 on the rear surface of the blade 2 is inserted into a slot 15 located in the opening of the accessory part 10 (see FIGS. 9 to ^ ^ 1). It is connected to the accessory part by means of a joint 11 which can be loosened with a simple pin or bolt extending across the slot 15. In order to fix the blade in a position to be fixed, a fixing mechanism 16 is provided, which includes a cylindrical pin 17 having a head 18. The paper size of the cylinder 12 is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) ------ 丨 丨 tr --------- ^ # (Please read the precautions on the back first (Fill in this page again) 558472 A7 ^ __ B7_ 5. Description of the Invention (β) The pin 17 is located in the hole 19, which extends through the accessory 10 and forms a right angle with the slot 15 in particular. The cylindrical pin 17 provides two axially-spaced constrictions 20, 21 having different diameters in a conventional manner. As shown in FIGS. 6, 9 and 12, the rear end portion 14 of the blade 2 is substantially semi-circular, and four spaced apart recesses 23, 24, 25, 25 are cut in the semi-circular peripheral area 22. 26. The positions of the four recesses are described below. Each of these recesses has a partially circular shape, the diameter of which is the same as the larger constriction 21 on the cylindrical 17 pin. The cylindrical pin 17 is usually supported at the outer end position by a spring 27, and the larger constriction 21 and the slot 15 are at the same height. When the cylindrical pin is engaged with the recess of 23 to 26, The pin is used to fix the blade in the angular position to be positioned. When the blade is to be loosened and rotated, the cylindrical pin 17 is pressed into the hole 19 against the force of the spring 27 until the narrow constriction 20 is located on the same plane as the slot 15. The constriction 20 has a diameter small enough compared to the depth of the actual recess to create a distance between the cylindrical pin and the recess, which distance allows the blade to be rotated from the actual recess. Referring to FIG. 12, the positions of the recesses 23 to 26 are shown. The first recess 23 is located at a straight edge portion 28, the recess 23 meets one end of the tooth line 4, and the other end of the recess fits into a semicircular edge 22. Specifically, the recess 23 is located in the transition zone between the straight edge 28 and the semicircular edge 22. As straightforward as shown in the drawing, the straight edge portion 28 is at a distance from the imaginary line L extending from the tip of the tooth profile, and is slightly upward from the starting position of the tooth profile. When the height of the tooth profile 4 is 4 · 8 mm as described above, the actual distance between the imaginary line L and the front end of the straight edge 28 is about 13 This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 (Mm) (Please read the notes on the back before filling out this page) --- 1 IIII ^ · 11111111 558472 A7 ____B7__ 5. Description of the Invention (I)) is 8 mm. A second recess 25 defines the most common operating position of the blade. The second recess 25 is separated from the first recess 23 by approximately 134 degrees on the periphery. According to the present invention, a third recess 26 is also provided, separated from the second recess 25 by about 40 degrees. In addition, between the first recess 23 and the second recess 25, a fourth recess 24 is separated from the first recess by about 99 degrees. The angle formed by the first recessed portion 23 and the fourth recessed portion 26 is indicated by 5 in the figure, and the angles formed by the other two recessed portions are respectively denoted as e and Γ. In this embodiment, the angle 5 is 99 degrees, and the angle 値 may vary within a range of 95 to 105 degrees. Similarly, the angle ε may be different from 35 degrees, but in the range of 30 to 40 degrees, and the angle Γ may be in the range of 35 to 45 degrees. In all cases, the angle formed by the first recess 23 and the third recess 26 should be between 170 and 180 degrees in total. As shown in the preferred embodiment, the angle formed by the first recess and the third recess totals 176 degrees. The blade 2 in FIG. 12 has an upper edge 29. In the rear part of the blade, the upper edge 29 is approximately parallel to the extension line L of the tooth line 4 and the tooth tip. Figures 5 and 9 show the basic geometry of the accessory part 10 of the handle. In the same way as the hand saw described in WO 99/20099, the grip 9 is joined to the accessory part 10 with a relatively narrow transition portion 30 with a slight rounded recess at the inner edge of the transition portion 30 The place 31 adjoins a thickened portion 32 behind a subsidiary member 10. The rear portion 32 of the accessory 10 is used as a knuckle guard to ensure that the user's hand does not slide forward along the handle onto the blade. The accessory part is an upper side 12 and a lower side 34 14 This paper size applies the Chinese National Standard (CNS) A4 (21〇χ 297 mm) ------------------ --Order --------- line ^^-(Please read the notes on the back before filling out this page) 558472 A7 ___B7_ V. Restrictions on invention description (β). In contrast to the attachment of a saw according to WO 99/20099 (because the upper and lower sides of the saw are substantially flat, the attachment is bulky) 'The attachment 10 is in this example a general A shape gradually decreasing toward a rounded end portion 35. More specifically, the upper side and the lower side of the accessory part make a sharp angle with each other as seen in FIG. In this preferred embodiment, the angle 々 is approximately 36 degrees (should be in the range of 29 degrees to 34 degrees). When the term accessory is used in this application, it should be remembered that the accessory is made up of two halves separated by a notch 15. The technical effects of the tapered shapes on the accessory parts will be further described by referring to the functional state shown in Figure 4. Referring to FIGS. 6 to 8, these figures show that the grip 9 parts on the handle form a solid structure with walls 37 on both sides, which are connected by a common back 36 and separated by a slot 15. The grip The handle 9 is an attachment to the notch 15 in the attachment member 10. This slot 15 is referred to as the first slot in the following articles. Similarly, the tooth-shaped protective device member 3 includes two side walls 38 connected to each other by a common back portion 39 and is limited by the second notch 40. The tooth-shaped protection device 3 is characterized by having a sliding seat shape, which is located in the recess 41 of the handle member 9 of the handle. The slide can be longitudinally shifted between the inactive position and the active protection extension position. The inactive position is shown in dotted lines in Figures 1, 3 and 4, and the active protection extension position is shown in Figure 2 and As shown in Figure 5. As shown clearly in Figures 7 and 8, the slide 3 basically has a general elliptical cross-section, and the oval cross-section is consistent with the elliptical cross-section of the recess 41. 15 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) —I — I--IIIII-— — III — — ^ ------- II (Please read the precautions on the back first (Fill in this page again) 558472 A7 ______B7 _ 5. Description of the invention (6) Figure 6 shows that the entire handle is composed of two polymer halves 42, 43. When the two halves 42, 43 need to be brought together by a suitable method such as gluing or welding, the two halves 42, 43 are manufactured to be pressed together into an outer convex curve and an inner plane. In the inner plane, each half 42, 43 has an elongated recess 44 which opens towards the free lower end of the handle 9. The two halves 42, 43 are brought together, and the two respectively form the above-mentioned recesses 41 in the recesses 44 of the two halves 42, 43 respectively. A groove 45 is provided at the bottom end of each recess, and both ends of the groove 45 are at a distance from both ends of the handle. These grooves co-operate with two retaining members 46 having a shape similar to a protrusion, which are located on the outside of the carriage 3 near the inner end of the groove. When the sliding seat is pulled out of the protective position, the holding member 46 ensures that the sliding seat is blocked by the handle without being disengaged. On one side of the outer end of the slide 3 is a hinge device 47 of the same type as WO 99/20909. As is known, the hinge device includes a generally horseshoe-shaped outer flange 48 and a narrow neck 49 which is located between the flange and the outside of the slide. The hinge device is used to allow the saw to be interconnected with the same type of clothing-like support frame clip described in WO 99/20909, which includes a keyhole-shaped notch to allow the hinge device to hook It is inside and the saw can swing relative to the support frame clamp, and it can also make the saw easy to separate from the support frame. The half piece 43 of the handle member has a notch 50 to receive the hinge device 47. The notch 50 opens at the free end of the handle and has a stop 51. When the slide 3 is pushed into the inner end position of the recess 41, the narrow neck 49 of the hinge device 47 enters the notch 50 and is aligned with the core-shaped recess 52 in the hinge device. Dimensions are applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)
-— — III — — ·11111111 I 558472 A7 ___B7__ 五、發明說明（A ) 配合的擋塊51抓住。如上所述的抓住連接確保當鋸子正在 被有效的使用時，滑座就會被擋在對應的凹口上。然而， 該抓住連接並不會在將滑座拉出如圖二與圖五所示之作用 保護位置時產生的一個顯著的阻力。 根據本發明的鋸子之功能與優點 圖三與圖五展示了根據本發明之鋸子的兩種不同的功 能狀態，該狀態曾被描述於SE 9803675-9中，特別是一 種圖三中普遍發生的操作狀態與和一種圖五中摺起來的狀 態。在圖三中的狀態，該刀片2與把手1互相與對方形成 一個鈍角。這個鈍角以固定銷17在凹口 25的位置定義並 且在實際展示的實施例中大約成134度。這個角度在效率 及人體工學的用鋸優點結果上已經是眾所皆知。 在圖五的狀態中，該齒形保護裝置3已經從握柄部件 中被拉出來了，並且刀片2已經被摺進和把手本身一樣的 齒形保護裝置中，因此確定了不會碰到刀片的尖齒並且形 成了一個好的保護。在這個狀態下，該固定銷17係位在第 一凹處23。 本發明的一個特性就是第三凹處26將刀片定位於如圖 四所示之位置成爲可能。在這個狀態下，把手的握柄部件 9從附屬部件10的後方沿著一個相對於從齒形尖端的延伸 線L向下傾斜的方向延伸。特別的是，該握柄9與延伸線 L形成了一個大約8度的角度（可能在6度到10度的範圍 內變化）。既然附屬部件10相對於握柄9形成了一個範圍 在130度到140度的鈍角，儘管事實上握柄的斜度從握柄 17 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） --------------------訂---------線 (請先閲讀背面之注意事項再填寫本頁) 558472 A7 五、發明說明（β ) (請先閱讀背面之注意事項再填寫本頁) 的前端合倂到附屬部件10的地方開始向下與向後傾斜，該 握柄9的後端將會與延伸線L保持一段距離。既然在這裡 後端與延伸線L保持了一個明顯的距離，手鋸在這種狀態 下可以放平的鋸，例如在如屋瓦一般的支撐面上進行橫鋸 的工件。由於整個握柄9與支撐平面間有良好的空隙，手 指可以配合握柄周圍的形狀而不會摩擦到支撐的平面。該 良好空隙因爲附屬部件10以一個如上所述向前漸漸減少的 形狀製造的事實而有很大的改進。這意味著在圖四的狀態 下該附屬部件的下側34與延伸線L有一値得注意的距離 被局部化。相同的應用在刀片的齒線4後方較低的直邊部 分28，該邊緣在如圖四之狀態下也大約與附屬部件的下側 34 —樣被局部化。換句話說，一個放在一支撐平面的工件 可以在沒有把手的任何部分或是刀片的後端部分會接觸到 支撐的表面的危險下完全的被鋸斷。既然該握柄9的斜面 向下傾斜，用鋸將不會只有自向前的方向有效，並且在更 具侵略性的後方也同樣有效，因爲當把手被拉向後方時將 不只會提供一個與齒線平行向後的拉力，也會有一個向下 的力量向量確保刀片的齒線會以一相當的力量被壓入已經 鋸出來的鋸縫中。 在所描述的手鋸較佳實施例中，根據本發明包含一個 在第一凹處23和第二凹處25之間的第四凹處24，該第四 凹處24也同樣可能將刀片定位與固定在如圖一和圖二所示 的位置上。在那種狀況下，刀片與把手的握柄部件大約成 99度的角度。這個功能狀態特別適合於修剪樹木的用途上 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 558472 A7 B7 五、發明說明（屮） ，尤其是考慮爲了鋸部分樹枝的下側而將鋸子上下顛倒的 可能性，就像是爲了据下較粗的樹枝所常做的事一樣。雖 然鋸子已經將齒形轉向上了，一個値得考慮的拉力仍將會 應用在刀片上，因爲把手與刀片形成了一個像是很斜的角 度。在本文中必須提到刀片可以容易的且快速地被再重新 定位到如圖三所示較傳統的功能狀態，就是從簡單的壓下 固定機件16中圓柱銷的頭18，然後圓柱銷17可以被重新 的從第四凹處24定位於第二凹處25。應該強調的是，所 有刀片在不同位置之間的重新定位將會以這樣簡單的方法 實行。 根據本發明之手鋸有一主要的優點就是該手鋸是通用 的，不只是能夠修剪樹枝，更重要的是甚至可以做爲一般 木工使用，特別是在圖四與之前所描述的水平用鋸。不管 是像刀片與把手之間在不同位置所對應不同的角度這樣如 此基本的改變，保證了一個使用者肌肉力量從把手到刀片 更有效的轉換，同時我們的手，部分在把手的關節保護裝 置中，部分在把手相對於刀片的幾何關係中被保護而不至 於受到機械的損害。如上所述的齒形保護裝置也提供了刀 片的齒形一個很好的保護。特別強調的是如上所述的齒形 保護裝置允許相同的、標準設計的把手使用不同長度的刀 片。爲了調整齒形保護裝置的有效長度以配合不同長度的 刀片，只需要簡單的測量定位構件26與齒形保護裝置的自 由外端在合適的不同距離。 本發明可能的修改 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) 訂---------疼 558472 A7 _ B7___ 五、發明說明（η ) 本發明的槪念不是只有限定如上所述之實施例和在圖 中所展示的裝置。鋸子也能夠有像SE97〇3788-l —樣種類 的可摺式齒形保護裝置來代替如上所述的縱向可滑動式齒 形保護裝置。要代替如上所述由兩半所組成的把手，該把 手也可能根據刀片做成有槽口的一件，並且利用握柄的一 些彈性變形之後插入齒形保護裝置滑座。在定位構件的外 側可能會裝在如一個圓錐形的容器之中。其他的修改也將 會根據接下來申請專利範圍所主張的範圍成爲可能。 20 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公茇） 1----------------訂------I--線^^ (請先閱讀背面之注意事項再填寫本頁)-— — III — — · 11111111 I 558472 A7 ___B7__ 5. Description of the invention (A) The mating stop 51 is grasped. The grip connection as described above ensures that when the saw is being used effectively, the carriage is blocked against the corresponding recess. However, the grasping connection does not generate a significant resistance when the slider is pulled out of the protective position shown in Figures 2 and 5. Functions and advantages of the saw according to the present invention FIGS. 3 and 5 show two different functional states of the saw according to the present invention. This state has been described in SE 9803675-9, especially one commonly occurring in FIG. Operating state and a state folded up in Figure 5. In the state shown in Fig. 3, the blade 2 and the handle 1 form an obtuse angle with each other. This obtuse angle is defined by the position of the fixing pin 17 in the notch 25 and is approximately 134 degrees in the embodiment shown. This angle is already well known in terms of efficiency and ergonomic advantages of sawing. In the state of FIG. 5, the tooth-shaped protection device 3 has been pulled out of the grip member, and the blade 2 has been folded into the tooth-shaped protection device same as the handle itself, so it is determined that the blade will not touch the blade. The sharp teeth and formed a good protection. In this state, the fixing pin 17 is located at the first recess 23. A feature of the present invention is that it becomes possible for the third recess 26 to position the blade at a position as shown in FIG. In this state, the grip member 9 of the handle extends from the rear of the attachment member 10 in a direction inclined downward with respect to the extension line L from the toothed tip. In particular, the grip 9 forms an angle of about 8 degrees with the extension line L (may vary in the range of 6 to 10 degrees). Since the accessory part 10 forms an obtuse angle ranging from 130 degrees to 140 degrees with respect to the grip 9, despite the fact that the slope of the grip is from the grip 17, this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 Mm) -------------------- Order --------- line (please read the precautions on the back before filling this page) 558472 A7 5 1. Description of the invention (β) (Please read the precautions on the back before filling in this page) The front end of the handle is attached to the attachment 10 and starts to tilt downwards and backwards. The rear end of the handle 9 will remain with the extension line L Some distance. Since here the rear end is kept at a significant distance from the extension line L, the hand saw can be placed flat in this state, such as a cross-saw workpiece on a support surface like a roof tile. Since there is a good gap between the entire grip 9 and the support plane, the fingers can fit the shape around the grip without rubbing against the support plane. This good clearance is greatly improved by the fact that the attachment member 10 is manufactured in a shape that gradually decreases forward as described above. This means that in the state shown in Fig. 4, the underside 34 of the accessory member is localized with a noticeable distance from the extension line L. The same applies to the lower straight edge portion 28 behind the tooth line 4 of the blade, which edge is also localized in the state shown in FIG. 4 about the lower side 34 of the accessory part. In other words, a workpiece placed on a supporting plane can be completely sawn off without the danger that any part of the handle or the rear end portion of the blade will contact the supporting surface. Since the slant of the grip 9 is tilted downwards, the saw will not be effective only in the forward direction, and it will also be effective in the more aggressive rear, because when the handle is pulled backwards, it will not only provide a The pulling force of the tooth line parallel to the back will also have a downward force vector to ensure that the tooth line of the blade will be pressed into the saw gap that has been sawed with a considerable force. In the described preferred embodiment of the handsaw, according to the present invention, a fourth recess 24 is included between the first recess 23 and the second recess 25, and the fourth recess 24 is also possible to position the blade. And fixed in the position shown in Figures 1 and 2. In that situation, the blade is at an angle of about 99 degrees to the grip part of the handle. This functional state is particularly suitable for the purpose of pruning trees. The paper size applies the Chinese National Standard (CNS) A4 (210 X 297 mm) 558472 A7 B7. 5. Description of the invention (屮), especially for sawing some branches The possibility of turning the saw upside down is just like what is often done to lay down thicker branches. Although the saw has turned the teeth, a carefully considered pulling force will still be applied to the blade, because the handle and the blade form a very oblique angle. It must be mentioned in this article that the blade can be easily and quickly repositioned to a more traditional functional state as shown in FIG. 3, which is to simply press the head 18 of the cylindrical pin in the fixed mechanism 16, and then the cylindrical pin 17 It can be repositioned from the fourth recess 24 to the second recess 25. It should be emphasized that the repositioning of all blades between different positions will be carried out in such a simple way. A major advantage of the hand saw according to the present invention is that the hand saw is universal, not only capable of pruning branches, but more importantly, it can even be used for general woodworking, especially the horizontal saw described in Figure 4 and previously. Regardless of such a basic change as the different angles between the blade and the handle at different positions, it ensures a more effective conversion of the user's muscle strength from the handle to the blade, and at the same time, our hands, part of the handle joint protection device In the middle, the part is protected from mechanical damage in the geometry of the handle relative to the blade. The tooth profile protection device described above also provides a good protection of the tooth profile of the blade. Particular emphasis is placed on the toothed guards described above that allow different length blades to be used for the same, standard design handle. In order to adjust the effective length of the tooth-shaped protection device to match the blades of different lengths, it is only necessary to simply measure the positioning member 26 and the free outer end of the tooth-shaped protection device at appropriate different distances. Possible Modifications of the Invention 19 This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm> (Please read the precautions on the back before filling this page). Order --------- ache 558472 A7 _ B7___ V. Description of the invention (η) The concept of the present invention is not limited to the embodiment described above and the device shown in the figure. The saw can also have a foldable type such as SE97〇3788-1. Tooth-shaped protection device instead of the longitudinal sliding type tooth-shaped protection device as described above. To replace the handle consisting of two halves as described above, the handle may also be made with a slot according to the blade and use the grip After some elastic deformation of the handle, it is inserted into the slide of the tooth-shaped protection device. On the outside of the positioning member, it may be contained in a conical container. Other modifications will be possible based on the scope claimed by the scope of the subsequent patent application . 20 This paper size applies to China National Standard (CNS) A4 (210 X 297 cm) 1 ---------------- Order ------ I--line ^ ^ (Please read the notes on the back before filling this page)