1286503 玖、發明說明： 【發明所屬之技術領域】 本發明為關於使供給至形成釘子射出口的頭部（η 〇 s e ) 之釘子，以傳動器驅動至該射出口内而自射出口内打出， 同時，使抵接被釘入材料而操作之接觸元件突出配置在前 述頭部的先端方向，如此之打釘機，更詳細為關於打釘機 的接觸元件之連結機構。 【先前技術】 在以壓縮空氣作為動力源驅動打擊活塞而打出釘子之 打釘機中，在形成打釘機主體的中空狀之外殼内配置有可 摺動自如地收容打擊活塞之打擊氣缸，藉由配置在前述打 擊氣缸上端之主闊對打擊氣缸内導入壓縮空氣。在一體形 成於前述外殼之把手（g r i p )部的内部形成有貯留自壓縮空 氣供給源來的壓縮空氣之空氣室，主閥藉空氣室接續至打 擊氣缸内，空氣室内的壓縮空氣可被導入打擊氣缸内而驅 動打擊活塞。又，在把手部之基部配置有為了控制前述主 閥之啟發閥（f r i g g e r v a 1 v e )，該啟發閥為藉手動操作在把 手部的下部形成之啟發桿而動作。 在前述打釘機本體之下方安裝形成有釘子射出口之頭 部，在頭部的釘子射出口内可摺動地導引一體安裝於前述 打擊活塞下面的傳動器。在形成於上述頭部的釘子射出口 側面之開口 ，一體連設釘子供給導引部，在前述釘子供給 導引部的後部連結收容有多數互相連結的釘子之釘匣，藉 沿著前述釘子供給導引部所配置之釘子供給機構使釘匣内 5 312/發明說明書(補件)/92-10/92119797 1286503 的連結釘依次被供給至上述頭部之釘子射出口内。 上述打釘機為在一體形成於本體之把手部的基部上形 成啟發（f r i g g e r )機構，藉把持把手之手指而操作前述啟發 桿時該啟發機構則被操作而使打釘機起動。又在打釘機 上，被形成有摺動自如地設在沿著頭部之釘子打出方向， 同時突出在頭部的射出口前方所配置之接觸機構，頭部的 釘子射出口之先端抵壓被釘入材料，而使前述接觸機構操 作，藉前述啟發機構其則可使打釘機起動。 先前之接觸機構為，如圖 7 ( a )及圖 7 ( b )所示，其 為由突出在頭部1的射出口 2之先端方向所配置的接觸元 件3 ;及，下端部被連結在前述接觸元件3之上端部而配 置在上述啟發機構旁邊之接觸臂 4 ;如此所構成，接觸元 件3被形成大致呈圓筒狀，其對可摺動自如地被裝著在形 成上述頭部1之下部的釘子射出口之圓筒狀部的外周上， 沿著射出口 2方向可摺動地導引頭部1。接觸臂4和接觸 元件3之結合部，如圖8所示，互相繫合形成在兩者的接 合面之橫方向的凹凸條5、6，自形成在接觸元件3側之開 口 8使固定螺絲7螺合於形成在接觸臂4之陰螺絲9而使 兩者固定結合。 上述先前的接觸元件3和接觸臂4之結合構造，雖然藉 繫合形成在水平方向的凹凸部 5、6來接受在接觸元件 3 和接觸臂4間起作用之上下方向的操作負荷，但由於接觸 元件3的摺動軸線和接觸臂4上端部之作用點被設定為自 前述軸方向脫離，因此，在接觸元件3和接觸臂4的結合 6 312/發明說明書(補件)/92-10/92119797 1286503 部會發生扭曲之作用力。因此，為了不因該扭曲力 觸元件3和接觸臂4的結合部變成扭曲狀而形成多 相繫合之水平方向的凹凸條5、6之條數，同時，設 條5、6之寬度方向有大的尺寸，結果，結合部會變 害頭部1之先端部的細小化，而會使釘子的釘入處 視性惡化等而損壞其作業性。 【發明内容】 本發明為解決上述接觸元件和接觸臂之連結機 題點，其課題為可使頭部之釘子射出口的先端部形 化，而提供有良好的被釘入處所辨視性的打釘機。 為了解決上述課題，本發明之打釘機為，在形成 本體之中空狀的外殼内配置有可摺動自如地收容打 之打擊氣缸，在前述外殼下部設置形成釘子射出 部，形成啟發桿的手動操作和先端藉使對被配置在 部之射出口的先端部之接觸機構的被釘入材料操作 動之啟發機構，藉該啟發機構的作動而導入壓縮空 述打擊氣缸内並驅動打擊活塞，藉在打擊活塞上結 動器使被供給至前述釘子射出口内之釘子，自釘子 朝向被釘入材料打出，如此所成之打釘機，前述接 對頭部被可摺動自如地保持，同時，藉由：上端在頭 方突出所配置的接觸元件；及，上端部被配置於前 機構部之接觸臂；如此所構成，在前述接觸元件和 各個形成有安裝部，使在兩安裝部間所形成的繫合 繫合孔形成繫合機構而使該繫合機構嵌合，同時， 312/發明說明書(補件)/92-10/92119797 而使接 數個互 定凹凸 大而阻 所之辨 構的問 成細小 打釘機 擊活塞 口之頭 上述頭 而可作 氣至前 合的傳 射出口 觸機構 部之前 述啟發 接觸臂 突起和 在離開 7 1286503 前述繫合機構之部份藉螺絲一體結合兩個安裝部。 又，使前述繫合突起和繫合孔的形狀，形成為和接觸元 件的摺動作動方向呈正交之直線狀的上下支持邊及和接觸 元件的摺動作方向呈平行之直線狀的側方支持邊如此而呈 大致為方形狀，同時，使繫合突起之上下支持邊和側方支 持邊對應於繫合孔的上下支持邊和側方支持邊而予以嵌 合，如此為其特徵。 【實施方式】 以下依照圖式所示之實施例說明本發明之實施形態。圖 1〜圖3表示本發明之打釘機。在一體形成把手部1 1的打 釘機本體所形成之中空狀的外殼1 0内，配置有可摺動自如 地收容打擊活塞1 2之打擊氣缸1 3，在該打擊活塞1 2的下 面一體結合可打擊釘子之傳動器14。在前述外殼10的下 面安裝形成有釘子射出口 15之頭部16，前述傳動器14在 頭部1 6的釘子射出口 1 5内可摺動地被導引。在上述頭部 1 6之釘子射出口 1 5的側面所形成之開口一體連設有釘子 供給導引部1 7，在該釘子供給導引部1 7之後端連接收容 有多數個連結釘子之釘匣1 8，藉配置在釘子供給導引部1 7 之釘子供給機構1 9將釘匣1 8内的釘子對上述頭部1 6的釘 子射出口 1 5内依次地供給。 在前述打擊氣缸1 3的上端配置有主閥2 0，該主閥2 0選 擇性使打擊氣缸1 3内和形成在把手部1 1的内部之空氣室 2 1和排氣口間接續。空氣室2 1為介由安裝在把手部1 1後 端之空氣塞2 2接續至壓縮空氣供給源，主閥2 0藉使打擊 8 312/發明說明書(補件)/9240/92119797 1286503 氣缸13内接續至空氣室21，而空氣室21内的壓縮空氣被 導入打擊氣缸1 3内而驅動打擊活塞1 2。在把手部1 1之基 部配置有為了控制前述主閥2 0之啟發閥2 3，該啟發閥2 3 藉形成在把手部1 1的下部的啟發機構2 4而作動。 啟發機構2 4為藉手動操作形成在把手部1 1下部之啟發 桿2 5 ;及，先端使配置在上述頭部1 6的釘子射出口 1 5之 先端部的接觸機構2 6押壓被釘入材料面；如此之2種操作 而作動前述啟發閥2 3。接觸機構2 6為由突出配置在上述 頭部1 6的釘子射出口 1 5前方之接觸元件2 7 ;及，一端被 連結在該接觸元件2 7而另一端被配置在前述啟發機構2 4 之接觸臂2 8 ;如此所構成，接觸元件2 7可摺動地被支持 於形成頭部1 6的釘子射出口 1 5之筒狀部的外周面上，先 端部對上述頭部1 6的釘子射出口 1 5之先端方向突出而配 置，在釘入釘子時可壓在被釘入材料的表面上。連結在接 觸元件2 7之接觸臂2 8的上端為被配置在啟發機構2 4上， 接觸元件 2 7藉被釘入材料而被操作並使啟發機構 2 4作 動，啟發桿2 5則可使啟發閥2 3操作。 接觸元件2 7被形成為金屬成型零件，該接觸元件2 7的 上端部被組裝在折彎金屬板材料所形成之接觸臂 2 8的下 端部一體結合之頭部1 6上。如圖4所示，自接觸元件2 7 的側部朝上方一體突起形成安裝部2 9，在接觸臂2 8之下 端部形成有和前述接觸元件2 7形成的安裝部2 9前方正面 相對向而折彎形成之安裝部3 0。在上述接觸元件2 7和接 觸臂2 8的兩安裝部2 9、3 0之互相對向面形成有自接觸元 9 312/發明說明書(補件)/92-10/92119797 1286503 件2 7的安裝部2 9突出在接觸臂2 8上的安裝部3 0側所形 成之繫合突起31，及，收容前述繫合突起31而形成在接 觸臂2 8的安裝部3 0之繫合孔3 2，如此所構成的繫合機構 3 3。又，在接觸元件 2 7的安裝部 2 9和前述繫合突起3 1 隔著間隔形成有陰螺絲孔3 4，在接觸臂2 8的安裝部3 0對 應著陰螺絲孔3 4形成有開口 3 5。 如圖4及圖5所示，將形成在接觸元件2 7的安裝部2 9 上之繫合突起31嵌合於形成在接觸臂28的安裝部30之繫 合孔3 2内，自接觸臂2 8側貫通固定螺絲3 6的軸部之開口 3 5藉螺合於接觸元件2 7的安裝部2 9之陰螺絲孔3 4，接觸 元件2 7和接觸臂2 8 —體結合而裝配在頭部1 6上。藉此一 將接觸元件2 7的繫合突起3 1和藉接觸臂2 8的繫合孔3 2 所構成之繫合機構3 3互相嵌合，由於在和該繫合機構3 3 離開的部份藉固定螺絲3 6而一體使兩者結合，因此，由於 被嵌合的繫合突起3 1和繫合孔3 2，其可支持當接觸元件 2 7壓住被釘入材料時的上下方向之負荷，及，接觸元件2 7 和接觸臂2 8間所發生的扭曲方向之負荷。 如圖6所示，形成在接觸元件2 7之繫合突起31和形成 在接觸臂2 8之繫合孔3 2的形狀，被形成為在和接觸元件 27 的摺動方向呈正交之上下緣與摺動方向呈平行的兩側 之端緣形成直線狀的上下支持邊3 7、3 8和側方支持邊3 9、 4 0，而大致形成為方形，藉在接觸元件2 7的安裝部2 9之 繫合突起3 1上所形成的直線狀之上下支持邊3 7繫合於接 觸臂2 8的安裝部3 0之繫合孔3 2的直線狀之上下支持邊 312/發明說明書(補件)/92-10/92119797 10 1286503 3 8 ’而可使在接觸元件2 7壓住被釘入材料時的負何傳達至 接觸臂2 8上。又，藉接觸元件2 7的繫合突起3 1之直線狀 的側方支持邊3 9繫合於接觸臂2 8的繫合孔3 2之直線狀的 側方支持邊4 0，其可支持在接觸元件2 7和接觸臂2 8間所 發生之扭曲方向的負荷，而可防止接觸元件 2 7和接觸臂 28之扭曲變形。 又，藉將固定螺絲 3 6和陰螺絲孔之締結解除，再解除 繫合突起 3 1和繫合孔3 4之嵌合，如此即可自接觸臂 28 將接觸元件2 7脫離。在用不同種類的釘子來實施釘入時， 可對應該釘子在接觸臂2 8上結合接觸元件2 7，如此而可 利用打釘機。 (產業上之利用可能性） 如上根據本.發明之接觸元件結合機構，由於將形成在接 觸元件和接觸臂雙方的安裝部之繫合突起和繫合孔構成的 繫合機構使其互相嵌合，同時，在和該繫合機構離開之部 分藉固定螺絲一體將兩者結合，因此，可充分支持接觸元 件對被釘入材料押壓時受到的上下方向之負荷；及，在接 觸元件和接觸臂間所發生的扭曲方向之負荷，同時，可使 傳統的結合構造結合部形成為小形狀，並可使頭部的釘子 射出口之先端部份細小化，如此可提供對釘入位置有良好 的辨視性之打釘機。 又，由於使形成在接觸元件和接觸臂之各安裝部的繫合 機構之繫合突起和繫合孔的形狀構成為在上下及兩側形成 有直線部份之形狀，同時，可對應於接觸元件的繫合突起 11 312/發明說明書(補件)/92-10/92119797 1286503 和接觸臂的繫合孔之各直線狀的上下邊和兩側邊而 嵌合，因此，可確實保持對在接觸元件和接觸臂間 之較大的扭曲方向之負荷。 進一步，由於其可解除接觸元件和接觸臂之結 此，僅藉接觸元件之交換即可提供可對應多種尺寸 的打釘機。 使其相 所發生 合，因 之釘子 [ 圖 式 簡 單 說 明 ] 圖 1 為 本 發 明 之 打 釘 機 的 縱 剖 側 視 圖 0 圖 2 為 圖 1 之 打 釘 機 的 頭 部 之 反 對 側 的 側 視 圖 3 為 圖 1 之 打 釘 機 的 頭 部 之 正 面 圖 〇 圖 4 為 裝 配 前 之 接 觸 元 件 及 接 觸 臂 的 斜 視 圖 圖 5 為 在 結 合 狀 態 之 接 觸 元 件 和 接 觸 臂 的 一 正 面 圖 〇 圖 6 為 圖 5 中 之 A -A 線 上 的 剖 面 圖 〇 圖 7 (a )及 .(b )表 示· 先i Ιί之接觸元件結合構造 縱 剖 面 圖 J 圖 7(b)為 正 面 圖 〇 圖 8 為 在 圖 7 ( b) 中 之 Β - Β 線 上 的 剖 面 圖 0 (元件符號說明） 10 外 殼 11 把 手 部 12 打 擊 活 塞 13 打 擊 氣 缸 14 傳 動 器 15 釘 子 射 出 π 312/發明說明書(補件)/92-10/92119797 剖面之 7(a)為 12 1286503 16 頭 部 17 釘 子 供 給 導 引部 18 釘 匣 19 釘 子 供 給 機 構 20 主 閥 21 空 氣 室 22 空 氣 塞 23 啟 發 閥 24 啟 發 機 構 25 啟 發 桿 26 接 觸 機 構 27 接 觸 元 件 28 接 觸 臂 29 ' 30 安 裝 部 31 繫 合 突 起 32 繫 合 孔 33 繫 合 機 構 34 陰 螺 絲 孔 35 開 口 36 固 定 螺 絲 37 ^ 38 上 下 支 持 邊 39 > 40 側 方 支 持 邊1286503 玖Invention Description: [Technical Field] The present invention relates to a nail that is supplied to a head (η 〇se ) forming a nail ejection opening, which is driven into the ejection opening by an actuator and is ejected from the ejection opening while The contact element that abuts the material that is driven into the material is protruded and disposed in the front end direction of the head portion, and the nailer is more specifically a connection mechanism of the contact element of the nailing machine. [Prior Art] In a nailing machine that drives a striking piston with a compressed air as a power source, a blower cylinder that accommodates a striking piston is detachably housed in a hollow casing that forms a main body of the nailing machine. The compressed air is introduced into the main wide striking cylinder disposed at the upper end of the striking cylinder. An air chamber for storing compressed air from a compressed air supply source is formed inside a grip portion integrally formed with the outer casing, and the main valve is connected to the striking cylinder by the air chamber, and the compressed air in the air chamber can be introduced into the blow chamber. Drive the striking piston inside the cylinder. Further, an inspiration valve (f r i g g e r v a 1 v e ) for controlling the main valve is disposed at a base portion of the handle portion, and the heuristic valve is operated by a manual operation to operate an inspiration rod at a lower portion of the hand. A head portion formed with a nail ejection opening is attached to the lower portion of the nailing machine body, and an actuator integrally attached to the lower surface of the striking piston is rotatably guided in the nail ejection opening of the head. A nail supply guide is integrally formed in an opening formed in a side surface of the nail ejection opening of the head portion, and a nail that accommodates a plurality of mutually connected nails is coupled to a rear portion of the nail supply guide portion, and is supplied along the nail The nail supply mechanism disposed in the guide portion sequentially feeds the staples of the nail cartridge 5 312 / invention specification (supplement) / 92-10 / 92119797 1286503 into the nail ejection openings of the head portion. The nailing machine forms a heuristic (f r i g g e ) mechanism on a base integrally formed on the handle portion of the main body, and the heuristic mechanism is operated to activate the nailing machine when the heuristic rod is operated by holding the finger of the handle. Further, on the nailing machine, a contact mechanism disposed in front of the injection port of the head is formed in a direction in which the nail is inserted in the direction of the nail, and the tip end of the nail ejection opening of the head is pressed. The nail is driven into the material to operate the aforementioned contact mechanism, and the inspiration mechanism can activate the nailing machine. The previous contact mechanism is as shown in Fig. 7 (a) and Fig. 7 (b), which is a contact element 3 which is disposed in the direction of the tip end of the ejection opening 2 of the head 1; and the lower end portion is coupled to The contact arm 4 disposed beside the upper end portion of the contact element 3 is disposed adjacent to the heuristic mechanism. The contact member 3 is formed in a substantially cylindrical shape, and is detachably attached to the head portion 1 The head portion 1 is foldably guided in the direction of the ejection opening 2 on the outer circumference of the cylindrical portion of the lower nail ejection opening. As shown in FIG. 8, the joint portion of the contact arm 4 and the contact member 3 is integrally formed with each other to form the uneven strips 5 and 6 in the lateral direction of the joint faces of the both, and the fixing screws are formed from the opening 8 formed on the side of the contact member 3. 7 is screwed to the female screw 9 formed on the contact arm 4 to fix the two. The above-described combined structure of the contact element 3 and the contact arm 4, while receiving the uneven portions 5, 6 formed in the horizontal direction, accepts an operation load in the upper and lower directions acting between the contact member 3 and the contact arm 4, but The folding axis of the contact element 3 and the action point of the upper end of the contact arm 4 are set to be disengaged from the aforementioned axial direction, and therefore, the combination of the contact element 3 and the contact arm 4 6 312 / invention specification (supplement) / 92-10 /92119797 1286503 The twisting force will occur. Therefore, in order to prevent the joint portion of the twisting force contact element 3 and the contact arm 4 from being twisted, the number of the uneven strips 5, 6 in the horizontal direction in which the multiphase is coupled is formed, and the width direction of the strips 5, 6 is set. As a result, the size of the joint portion may deteriorate the tip end portion of the head portion 1 to deteriorate the nailing of the nail, thereby impairing the workability. SUMMARY OF THE INVENTION The present invention is to solve the problem of the connecting device of the above-mentioned contact element and contact arm, and the object of the invention is to shape the tip end portion of the nail ejection opening of the head and provide a good visibility of the nailed portion. Nail machine. In order to solve the above problems, the nailing machine of the present invention is configured such that a blow-molding cylinder that can be detachably received in a hollow outer casing that forms a main body is provided, and a nail emitting portion is formed in a lower portion of the outer casing to form a manual for the heuristic rod. The operation and the apex are inductive means for driving the material to be driven to the contact mechanism of the tip end portion of the injection port of the portion, and the action of the heuristic mechanism is introduced into the compression test chamber and the striking piston is driven. a hammer on the striking piston causes the nail to be supplied into the nail ejection opening to be driven out from the nail toward the material to be nailed, and the nailing machine thus formed is retractably held by the nailing head, and The upper end is protruded from the contact element disposed at the head; and the upper end is disposed at the contact arm of the front mechanism portion; and the contact member and each of the contact member are formed with the mounting portion so as to be between the two mounting portions The formed tying hole forms a tying mechanism to fit the tying mechanism, and at the same time, 312/invention specification (supplement)/92-10/92119797 The convexity is large and the resistance is determined by the small nailing machine hitting the head of the piston port and the gas can be ventilated to the front of the transmitting exiting contact mechanism portion of the aforementioned inspiring contact arm protrusion and at the departure of 7 1286503 Part of the mechanism is a combination of two mounting parts by means of screws. Further, the shape of the engaging projection and the engaging hole is formed into a linear upper and lower support side which is orthogonal to the folding operation direction of the contact element, and a linear side parallel to the folding direction of the contact element. The support side is substantially square in shape, and the upper support side and the side support side of the engagement protrusion are fitted corresponding to the upper and lower support sides and the side support sides of the engagement hole, and are thus characterized. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the embodiments shown in the drawings. 1 to 3 show a nailing machine of the present invention. In the hollow casing 10 formed by the nailer body integrally forming the handle portion 1 1 , a striking cylinder 13 that can accommodate the striking piston 1 2 is detachably housed, and the lower surface of the striking piston 1 2 is integrated. Incorporating an actuator 14 that can strike the nail. A head portion 16 on which a nail ejection opening 15 is formed is attached to the lower surface of the outer casing 10, and the actuator 14 is rotatably guided in the nail ejection opening 15 of the head portion 16. A nail supply guide portion 17 is integrally provided at an opening formed on a side surface of the nail ejection opening 15 of the head portion 16 , and a nail for accommodating a plurality of connecting nails is connected to the end of the nail supply guide portion 17 Then, the nails in the magazine 18 are sequentially supplied to the nail ejection openings 15 of the heads 16 by the nail supply mechanism 19 disposed at the nail supply guides 17. At the upper end of the striking cylinder 13 is disposed a main valve 20 which selectively continuates the air chamber 21 and the exhaust port formed in the striking cylinder 13 and inside the grip portion 1 1 indirectly. The air chamber 2 1 is connected to the compressed air supply source via the air plug 2 2 installed at the rear end of the handle portion 1 1 , and the main valve 20 is subjected to the blow 8 312 / invention manual (supplement) / 9240 / 92119797 1286503 cylinder 13 The inside is continued to the air chamber 21, and the compressed air in the air chamber 21 is introduced into the striking cylinder 13 to drive the striking piston 12. The heuristic valve 2 3 for controlling the main valve 20 is disposed at the base of the handle portion 1 1 , and the heuristic valve 2 3 is actuated by the heuristic mechanism 24 formed at the lower portion of the handle portion 1 1 . The inspiration mechanism 24 is an inspiration rod 2 5 formed at a lower portion of the handle portion 1 1 by manual operation; and the tip end presses the contact mechanism 26 disposed at the tip end portion of the nail ejection opening 15 of the head portion 16 Into the material surface; the aforementioned inspiration valve 23 is actuated by such two operations. The contact mechanism 26 is a contact element 27 that is disposed in front of the nail ejection opening 15 of the head portion 16; and one end is coupled to the contact element 27 and the other end is disposed at the inspiration mechanism 2 4 The contact arm 28 is configured such that the contact member 27 is rotatably supported on the outer peripheral surface of the cylindrical portion of the nail ejection opening 15 forming the head portion 16 and the nail at the tip end portion of the head portion 16 The tip end of the ejection opening 15 is protruded and arranged, and can be pressed against the surface of the material to be nailed when the nail is nailed. The upper end of the contact arm 28 coupled to the contact member 27 is disposed on the heuristic mechanism 24, the contact member 27 is operated by being driven into the material, and the heuristic mechanism 24 is actuated, and the heuristic rod 25 can be Inspiration valve 2 3 operation. The contact member 27 is formed as a metal molded part, and the upper end portion of the contact member 27 is assembled on the head portion 16 integrally joined to the lower end portion of the contact arm 28 formed by the bent metal plate material. As shown in FIG. 4, the side portion of the contact member 27 is integrally protruded upward to form a mounting portion 2, and the lower end portion of the contact arm 28 is formed with a front surface opposite to the front surface of the mounting portion 27 formed by the contact member 27. The mounting portion 30 is formed by bending. A contact element 9 312 / invention specification (supplement) / 92-10/92119797 1286503 piece 27 is formed on the mutually opposing faces of the two contact portions 2 9 , 30 of the contact element 27 and the contact arm 28 The attachment portion 29 protrudes from the attachment portion 30 formed on the side of the attachment portion 30 of the contact arm 28, and the engagement hole 31 formed in the attachment portion 30 of the contact arm 28 is accommodated in the attachment portion 31. 2. The coupling mechanism 33 thus constructed. Further, a female screw hole 34 is formed between the mounting portion 29 of the contact member 27 and the engaging projection 3 1 at intervals, and an opening is formed in the mounting portion 30 of the contact arm 28 corresponding to the female screw hole 34. 3 5. As shown in FIGS. 4 and 5, the engaging projection 31 formed on the mounting portion 29 of the contact member 27 is fitted into the engaging hole 3 2 formed in the mounting portion 30 of the contact arm 28, and the self-contact arm The opening 3 of the shaft portion of the through-side fixing screw 36 is screwed to the female screw hole 3 4 of the mounting portion 29 of the contact member 27, and the contact member 27 and the contact arm 28 are integrally coupled to each other. Head 1 6 on. Thereby, the engaging projection 3 1 of the contact member 27 and the engaging mechanism 3 3 formed by the engaging hole 3 2 of the contact arm 28 are fitted to each other, and the portion which is separated from the engaging mechanism 3 3 The two are combined by the fixing screws 36, and therefore, due to the fitted engaging projections 3 1 and the engaging holes 3 2, they can support the up and down direction when the contact member 27 is pressed against the material to be nailed. The load, and the load in the twisting direction between the contact element 2 7 and the contact arm 28. As shown in Fig. 6, the shape of the engaging projection 31 formed on the contact member 27 and the engaging hole 32 formed in the contact arm 28 is formed to be orthogonal to the folding direction of the contact member 27. The end edges of the two sides which are parallel to the direction of the folding direction form linear upper and lower support edges 3 7 and 38 and the side support edges 3 9 and 40 , and are formed substantially in a square shape by the mounting of the contact member 27 . The linear upper and lower support side 3 7 formed on the engaging projection 3 1 of the portion 2 is attached to the linear upper and lower support side 312 of the attachment portion 3 2 of the contact portion 28 of the contact arm 28 / invention specification (Repair) / 92-10 / 92119797 10 1286503 3 8 'can be used to convey the contact element 27 to the contact arm 28 when it is pressed against the material. Further, the linear side support side 39 of the engagement projection 3 1 of the contact element 27 is coupled to the linear side support side 40 of the engagement hole 32 of the contact arm 28, which can support The twisting direction load occurring between the contact member 27 and the contact arm 28 prevents the distortion of the contact member 27 and the contact arm 28. Further, the engagement of the fixing screw 36 and the female screw hole is released, and the fitting of the engaging projection 3 1 and the engaging hole 34 is released, so that the contact member 27 can be detached from the contact arm 28. When the nailing is carried out with different kinds of nails, the nail can be combined with the contact member 2 7 on the contact arm 28 so that the nailing machine can be used. (Industrial Applicability) According to the contact element coupling mechanism of the present invention, the engaging mechanism formed by the engaging projection and the engaging hole formed in the mounting portion of the contact member and the contact arm is fitted to each other. At the same time, the part that is separated from the tying mechanism is integrated by a fixing screw, so that the load of the contact element in the up and down direction when the material is pressed by the pressing material can be sufficiently supported; and, in the contact element and the contact The load in the twisting direction between the arms, at the same time, can make the conventional joint structure joint portion into a small shape, and can make the tip end portion of the nail exit port of the head fine, so that the nailing position can be provided well. The discriminating nailing machine. Further, the shape of the engaging projection and the engaging hole of the engaging mechanism formed at each of the contact portions of the contact member and the contact arm is configured to have a shape of a straight portion formed on the upper and lower sides and at the both sides, and at the same time, correspond to the contact The engaging projection 11 312 of the component/invention specification (supplement)/92-10/92119797 1286503 and the linear upper and lower sides of the engaging hole of the contact arm are fitted, so that the pair can be surely held A large twisting load between the contact element and the contact arm. Further, since it can release the contact of the contact member and the contact arm, the nailing machine can be provided in a variety of sizes by only the exchange of the contact members. Fig. 1 is a longitudinal sectional side view of the nailing machine of the present invention. Fig. 2 is a side view of the opposite side of the head of the nailing machine of Fig. 1. 4 is a front view of the head of the nailing machine of FIG. 1 is a perspective view of the contact element and the contact arm before assembly. FIG. 5 is a front view of the contact element and the contact arm in a combined state. FIG. 6 is FIG. Sectional view on the A-A line in Figure 7 (a) and (b) shows the longitudinal cross-sectional view of the contact element combination structure of the first i Ι ί. Figure 7 (b) is the front view 〇 Figure 8 is shown in Figure 7 ( b) 中中Β - 剖面 Section line drawing 0 (component symbol description) 10 Housing 11 Handle part 12 Strike piston 13 Strike cylinder 14 Actuator 15 Nail injection π 312 / Invention manual (supplement) / 92-10/ 92119797 Section 7(a) is 12 1286503 16 Head 17 Nail supply guide 18 Stud 19 Nail supply mechanism 20 Main valve 21 Air chamber 22 Air plug 23 Inspiration valve 24 Inspiration mechanism 25 Inspiration rod 26 Contact mechanism 27 Contact element 28 contact arm 29 ' 30 mounting part 31 tying protrusion 32 tying hole 33 tying mechanism 34 female screw hole 35 opening 36 fixing screw 37 ^ 38 upper and lower support side 39 > 40 side support side
312/發明說明書(補件)/92-10/92119797 13312/Invention Manual (supplement)/92-10/92119797 13