201020069 六、發明說明： 【發明所屬之技術領域】 纟#明係涉及-種寺反手，尤指一種逆轉時可跳脫而達到 單向轉動的活動弧形擒縱韻扳手。 1 【先前技術】 既有單向棘齒扳手的構造，如第七圖所示的美國第 7’111’529號專利案’係於扳手頭（4G)前端的中間凹設一甜 制槽（41)，於鉗制槽（41)的周圍間隔形成數個弧形的凹口， ❹藉由凹口提供螺栓逆轉時逃脫的空間，X對應甜制槽（41) 的上、下兩側於扳手頭（4〇)形成一上夾臂（42)以及一下夾臂 (43)，於下夾臂（43)内壁凹設一兩侧開口的嵌口（431)，於 喪口（431)内設置一錐形彈簧（44)，又於嵌口（431)設置一朝 鉗制槽（41)内伸出’並且抵靠於錐形彈簧（44)外端的棘齒塊 (45) ，對應嵌口（431)的兩側以點焊的方式結合兩側蓋 (46) ，藉此封閉嵌口（431)兩側的開口。 前述既有的單向棘齒扳手使用時，係以鉗制槽（41)周圍 ❹的形狀配合棘齒塊（45)的側面一同鉗制螺栓的頭部，再以順 向轉動扳手頭（40)，藉此方式將螺栓鎖緊，當需要逆轉以便 重複前述鎖緊的操作時，係直接將扳手頭(12)逆轉，此時棘 齒塊（45)會被螺栓頭部的斜面，屋入嵌口（431)内如此使 得螺栓的頭部滑脫並達成扳手頭（12)逆轉的效果，重複前述 順、逆轉動的操作，可達到不需抽出扳手便能鎖緊螺检的 方便功效。 前述既有單向棘齒扳手雖可達到順、逆旋轉即能螺鎖 螺栓的功效，然而由於構造上的特徵，在加工以及使用上 3 201020069 會產生下述缺點： 1、 為了在狹小的嵌口（431)空間設置彈性體，因此既有 k單向棘齒扳手選用了壓縮後可減少所佔體的錐形彈簧（44) 作為頂推棘齒塊（45)的手段》 2、 承前點所述，為對應錐形彈簧（44)的容置，使得嵌 口（431)的内端需形成近直角形狀的加工死角，如此的構= 在加工時只能選擇以精密鑄造或者線切割加工或雷射切割 加工的手段成形，然而前述數種手段都會使得加工的成本 ©上升，並且以中心加工機切削鉗制槽（13)，再以線切割或雷 射成形嵌口（431)的兩道加工手段亦使得加工精度下降。 3、 既有單向棘齒扳手為了提供棘齒塊（45)進退的空 間，因此形成的嵌口（431)較深，使得下夾臂（43)需要設為 較厚的形態，否則就會有強度不夠的斷裂狀況發生。 4、 承前點所述，由於下夾臂（43)需要設為較厚的厚度， 因此既有的單向棘齒扳手無法作成較小的尺寸，無法應用 於螺鎖較小的螺栓，使得使用的廣度受限。 〇 5、由於既有單向棘齒扳手的棘齒塊（45)的作動方式係 進退直線運動，因此側面係騰空於嵌口（431)的設計，且接 觸螺栓的側面範圍亦小，因此在使用時容易產生滑脫的危 險情況，並由於棘齒塊（45)的作動方式係進退移動，因此側 面缺乏緩衝移動的空間，不能夠適應夾持尺寸略有差異的 螺栓。 6、既有單向棘齒扳手係於嵌口（431)旁設有兩個凸點 (432) ’令侧蓋（46)點焊時融化並藉此結合側蓋（46)，然而 如此的構造除了在側蓋（46)出現點焊的外觀痕跡以外，在強 201020069 盖（46)仍有容易 脫落 度上亦產生疑慮，當扳手受到衝擊時側 損壞的問題。 【發明内容】 由於既有單向料扳手在構造上具有加1不易 易滑脫以及小尺寸適用性較差等缺點。為此，本發明主: =手頭的内側形成弧形槽，以全外包的形態將^ 置於内，再以擒縱顆提供扳動螺栓或者滑脫的操作效 並解決前述既有單向棘齒扳手構造上的缺點。 ’201020069 VI. Description of the invention: [Technical field to which the invention belongs] 纟#Ming is related to the backhand of the temple, especially a movable arc-shaped escapement wrench that can jump off when it reverses to achieve one-way rotation. 1 [Prior Art] The construction of a one-way ratchet wrench, such as the US Patent No. 7 '111'529 shown in the seventh figure, is a recessed groove in the middle of the front end of the wrench head (4G). 41), a plurality of arc-shaped recesses are formed around the clamping groove (41), and the space for the bolt to escape when the bolt is reversed is provided by the notch, and the upper and lower sides of the sweet groove (41) are corresponding to the wrench. The head (4〇) forms an upper clamping arm (42) and a lower clamping arm (43), and an inner opening (431) is recessed on the inner wall of the lower clamping arm (43), and is disposed in the beating mouth (431). A conical spring (44) is further provided on the insert (431) with a ratchet block (45) projecting toward the outer end of the conical spring (44) and corresponding to the outer end of the conical spring (44), corresponding to the insert ( The sides of the 431) are joined by spot welding to the side covers (46), thereby closing the openings on both sides of the insert (431). When the existing one-way ratchet wrench is used, the side of the bolt (41) is clamped together with the side of the ratchet block (45) to clamp the head of the bolt, and then the wrench head (40) is turned in the forward direction. In this way, the bolt is locked, and when the reverse rotation operation is required to repeat the aforementioned locking operation, the wrench head (12) is directly reversed, and the ratchet block (45) is inclined by the inclined surface of the bolt head, and the housing is inserted into the insert. In (431), the head of the bolt is slipped off and the effect of reversing the wrench head (12) is achieved, and the above-mentioned smooth and reverse rotation operations are repeated, so that the convenient function of locking the screw inspection without extracting the wrench can be achieved. Although the above-mentioned one-way ratchet wrench can achieve the function of screwing the bolt in the forward and reverse rotation, the following disadvantages are caused in the processing and use due to the structural features: 1. In order to be embedded in a small space The mouth (431) space is provided with an elastic body, so that the k one-way ratchet wrench is selected as a means for reducing the conical spring (44) of the occupied body as a pushing ratchet block (45) after compression. Said that the corresponding conical spring (44) is accommodated, so that the inner end of the insert (431) needs to form a dead angle of a nearly right-angled shape, such a configuration = can only be selected by precision casting or wire cutting during processing Or laser cutting processing means, however, the foregoing several methods will increase the cost of processing, and cut the clamping groove (13) with a central processing machine, and then cut the two sides of the insert (431) by wire cutting or laser forming. Processing methods also reduce processing accuracy. 3. There is a one-way ratchet wrench to provide space for the ratchet block (45) to advance and retreat, so the formed insert (431) is deeper, so that the lower clamp arm (43) needs to be set to a thicker shape, otherwise it will A fracture condition with insufficient strength occurs. 4. As mentioned in the previous point, since the lower clamp arm (43) needs to be set to a thick thickness, the existing one-way ratchet wrench cannot be made into a small size, and cannot be applied to a bolt with a small screw lock, so that the use The breadth of the limitation. 〇5. Since the ratchet block (45) of the one-way ratchet wrench is operated in a linear motion, the side system is vacated in the design of the insert (431), and the side surface of the contact bolt is also small, so When it is used, it is easy to produce a dangerous situation of slippage, and since the operation of the ratchet block (45) is to move forward and backward, the side lacks a space for buffering movement, and it is not possible to adapt to a bolt having a slightly different clamping size. 6. The one-way ratchet wrench is provided with two bumps (432) beside the insert (431). The side cover (46) is melted during spot welding and thereby combined with the side cover (46). In addition to the appearance trace of spot welding on the side cover (46), there is also a problem that the cover (46) of the strong 201020069 still has a tendency to fall off, and the side is damaged when the wrench is impacted. SUMMARY OF THE INVENTION The existing unidirectional wrench has the disadvantages of being less than 1 in construction, and being less suitable for small size. To this end, the main body of the invention: = the inner side of the hand forms an arcuate groove, which is placed in the form of a fully outfit, and the operation of pulling the bolt or slipping is provided by the escapement and solving the aforementioned one-way ratchet The disadvantage of the construction of the tooth wrench. ’
本發明係提供— 種活動弧形擒縱顎 為達到上述目的 扳手，係包括： -扳手本體，該扳手本體設有—把柄，該把柄具有前、 後兩端以及上、下兩側’於該把柄前端形成一扳手頭，於 ;扳手頭前端的中間朝後凹入形成-甜制槽，對應該鉗制 的上、下兩侧，於該扳手頭形成一上夾臂以及一下夾臂， 將該鉗制槽周圍的位置分為靠近上夹臂的逆向端以及靠近 #的項向粕，對應該鉗制槽周圍的上側於該扳手頭的 β内壁凹入形成一弧形槽，對應該弧形槽的左、右兩侧於該 扳手頭至少形成一側壁；以及 擒縱顎’該擒縱顎係弧形的塊體，並且以滑動的形 心於4弧形槽内，於該擒縱顎的中間與該弧形槽的側壁 門形成導孔配合一定位銷的構造，其中該導孔係弧形 長孔”玄定位銷係穿過該導孔的順向端，於該擒縱顎内壁 的項向端形成—推進面，於該擒縱顆的逆向段係形成一炎 顎4，5亥夾顎部的内壁係由該弧形槽的逆向端朝内凸出， 於該夾顎部朝内的内壁形成—夹面，又於該夾顎部的逆向 5 201020069 端形成一與該夾面桐鄰的頂推面。 進一步’本發明擒縱顎順向段的内壁形狀係配合所述 鉗制槽周圍的輪廓。 更進一步’本發明於下夾臂内側面的前端朝内突出形 成一防滑脫凸部’接鄰該防滑脫凸部的後側於下夾臂的内 侧面形成一下夹持面，又對應該下夾持面的後方於下夾臂 的内側面後端形成一傾斜的下承受面，其中下夾持面與所 述擒縱顎的夾面相對，下承受面與下夾持面之間夾有近6〇 ❹度的爽角。 較佳的’於所述擒縱顎的夾面的逆向端朝内凸出形成 一小弧面，所述導孔的順向端與所述定位銷之間具有一緩 衝間隙《 較佳的，對應所述弧形槽的左、右兩側，於該扳手頭形 成兩所述的側壁，於兩所述側壁之間穿設一插銷孔，所述定 位銷係穿插結合於兩插銷孔之間，所述導孔係穿設於所述擒 縱顎的中間，以該導孔的順向端提供該插銷穿過。 〇 本發明使用時，係以扳手頭的鉗制槽箝制於螺栓的周 圍89螺检進入射制槽時，内端會頂推擒縱顎的推進面， 7擒縱顎逆向滑移至夾面可抵靠螺栓的位置，接著轉動扳 手本體’以擒縱顎的夾面配合相對的扳手頭内壁面，一同 甜制於螺栓的周圍’藉此，當扳動把柄帶動扳手頭順向旋 轉時，會同時帶動螺栓順向旋轉並達到螺鎖螺栓的效果。 田轉動扳手頭逆轉時’由於螺栓頭部轉角會推動擒縱 顆的頂推面’令擒縱顎的夾顎部順向滑移而内縮於弧形槽 内這使得螺栓能於夾面滑脫，讓扳手頭得以在原地逆向 6 201020069 轉動如此重複前述順向、逆向旋轉板手頭的動作，即可 達到不需抽出扳手便能鎖緊螺栓的方便功效。 、由於嵌設擒縱顎的弧形槽係袋狀的構造，加上擒縱顎 沿弧形的軌跡滑動的設計，因此使得本發明相較於既有 單向棘齒扳手’在加工上或者使用上具有以下的優點： 1本發明擒縱顎配合弧形槽的構造不需設置彈簧即可 使用，減少零件的數量而具有經濟效益。 由於本發明的弧形槽係由扳手頭的内壁凹設且深度 較淺因此於加工製造時’由中心、加卫機分別以銑刀以及 鍵槽刀即可銑出鉗制槽以及弧形槽，這使得本發明不需經 多道工法即能完成加工’除降低成本以外，還具有較 精密度。 ^ m 3、由於本發明狐形槽的深度較淺，因此扳手頭周圍的 厚度不需特別設為較厚的形態，除了 易斷裂以外，還具有能夠小型化的特色，藉此適 鎖緊較小尺寸的螺栓。 ❹ 4由於本發明的擒縱顎係沿弧形的軌跡滑動，這使得 本發明應用於大小略有差異的螺栓時，能以略為滑動調整 的擒縱顎的夾面位置，適應失持於不同大小的螺栓 發明具有較大的應用彈性。 5、相較於既有的單向棘齒扳手’本發明由於弧形槽係 -體成形袋狀凹入的設置’因此不需要在周圍焊接側板等 補強的構造即具有足夠的強度，避免本發明受到衝擊時， 產生側板脫落的損壞疑慮。 · 【實施方式】 7 201020069 本發明係一種活動弧形擒縱顎扳手，請參看第一至四 圖的較佳實施例，係包括： 一扳手本體（10)，扳手本體（10)設有一把柄（11)，把柄 (1Ί)具有前、後兩端以及上、下兩側，於把柄（彳彳）前端形成 一扳手頭（12)，扳手頭（12)係圓盤形狀的板體，於扳手頭（12) 前端的中間朝後凹入形成一鉗制槽（13)，對應鉗制槽（彳3)的 上、下兩側於扳手頭（12)形成一上夾臂（14)以及一下夾臂 (15)，又將鉗制槽（13)周圍的位置分為靠近上夾臂（14)的逆 〇向端以及靠近下夾臂（1 5)的順向端； 於下夾臂（15)内側面的前端朝内突出形成一防滑脫凸 部（151) ’接鄰防滑脫凸部（151)的後侧於下夾臂（15)的内側 面形成一下夾持面（152)，又對應下夹持面（152)的後方於下 夾臂（15)的内側面後端形成一傾斜的下承受面（153)，下承 受面〇53)與下夾持面（1 52)之間夹有約為60度的夾角； 對應鉗制槽（13)周圍中間偏上側的位置，於扳手頭（12) 的内壁凹入形成一弧形槽（16)，弧形槽（16)的内壁可為單一 ©或者具有複數個圓心的弧形狀態，對應弧形槽(16)的左、右 兩側於扳手碩（12)各形成一側壁（161)，於兩侧壁（161)之間 穿议-插銷孔（162)，於兩插銷孔（162)之間以柳合或者螺鎖 的手段穿插結合一定位銷（1 7)。 一擒縱顎（20)，擒縱顎（2〇)係弧形的塊體並設置於弧形 槽（16)内’擒縱顆（2Q)外壁的形狀係配合弧形槽（16)内壁形 狀：：形’藉此，令擒縱顎(2〇)能以外壁沿著弧形槽(16)的 内土 β動，於擒縱顎（20)的中間配合定位銷（17)穿設一導孔 ()導孔（2 1)係弧形的長孔，並且以順向端提供插銷（1 201020069 穿過，導孔叫順向端的周壁外側與定位銷（17) ，隙㈧’藉此緩衝間隙㈧提供擒縱顯 逆: 動的裕度； η α 擒縱顆（2〇)順向段内壁的形狀係配合甜制槽（13)周圍 的輪靡’藉此形狀能填滿弧形槽⑽，使得鉗制槽(13)周圍 的壁面完整，形同扳手本體(1〇)的内壁而具有較佳的夾持功 能，於擒縱顆(20)内壁的順向端形成一推進面(22)，推進面 (22)略為朝鉗制槽（13)内凸出，並且當螺检（β)插入甜制槽 ❿（13)而受㈣時’螺栓（Β)内端的轉角與推進面（22)之間具 有-旋轉間隙(c ) ’藉此提供擒縱顎(2〇)沿螺栓(Β )周圍滑 動的裕度。 擒縱顎（20)的逆向段係形成一夾顎部（23)，夾顎部（23) 的内壁由弧形槽（16)的逆向端朝内凸出，於夾顎部（23)朝内 的内壁形成一與下夾持面52)相對的夾面（231卜又於夾顎 部（23)的逆向端形成一與夾面（231)相鄰的頂推面（232)，於 夾面（231)的逆向端朝内凸出形成一小弧面（233)，藉由小弧 ©面（233)可卡扣螺拴（Β )的頭部，藉此提供止滑以及防脫的 效果。 本發明除前述較佳實施例，係以固定在兩側壁（161)之 間的定位銷（1 7)配合擒縱顎（20)的導孔（21 )，進而達到限制 擒縱顎（20)滑動行程的功效以外，亦可將類似導孔（21)的孔 洞穿設於兩側壁（161)之間，再將定位銷（17)改為穿固於擒 縱顯（20)的形態’以定位銷（17)沿兩側壁（161)的弧形孔滑 動之構造’同樣達到限制擒縱顎（2〇)滑動行程的效果。前述 定位銷（17)與導孔（21)互換設置位置的設計，本發明在此不 9 201020069 加以限制。 再者，本發明較佳實施例除於弧形槽（16)的左、右兩側 皆形成侧壁（161)以外，亦可將弧形槽（16)設為一侧開放的 形態，對應弧形槽（16)的另一侧於扳手頭（12)形成所述的側 壁（161)，再於前述側壁（161)結合所述的定位銷（17)，令定 位鎖（17)棱跨於弧形槽（1e)内而穿插於擒縱韻（2〇)的導孔 (21)，同樣達到限制擒縱顎（2〇)滑動行程的效果；前述於弧 形槽（16)形成單側或雙側的側壁（161)變化，本發明在此不 ❹加以限制》 本發明較佳實施例使用時，請參看第三至五圖，係將 螺检（B)置於鉗制槽（13)内，當螺栓的頭部進入鉗制槽 (13)時’若擒縱顎(20)係處於朝順向滑動的狀態而使得順向 端凸出弧形槽（16)時，請參看第五圖，形狀配合螺栓印）頭 部的擒縱顆（20)的推進面（22)會受螺检（B)抵靠在螺检（b) 移鉗的過程巾’擒縱顎（2C^順向端的推進面（a) 被螺栓（B)推動，令擒縱顎（2〇)沿弧形槽（16)的内壁逆向滑 ©動移動到接近如第二圖所示的，足以抵靠於螺检（B )的位 置。 本發明轉動螺栓（B)時，係以把柄⑴）帶動扳手頭（12) 順向轉動，開始轉動時，擒縱顆（2〇)的夹面口川被螺检（B ) 頂化的角落頂靠並產生略為逆向的滑移，藉此移動至能夠 配口下夾持面（152)一同夫靠螺检⑻的位置，&時下承受 面（153)係抵靠於螺栓（B)後側的表面。 當夾面（231)初抵靠於螺栓（B )的表面時由於夾面 )逆向鳊的小弧面（233)係外凸的形狀，因此使得夹面 201020069 (231)與螺栓（B )頭部的表面之間產生微小的間隙。當持續 順向扳動把柄（11)，藉此將施壓增高時，由於扳手頭（12)的 '上夾臂（14)會略為變形，此時擒縱顎（2〇)的夾面（23彳）會緊 •貼於螺栓（B)頭部的上表面，同時朝内凸出的小弧面（233) 以及下央臂（15)前端的防滑脫凸部（151)會緊扣螺检（b )，在 轉動過程令產生防脫的效果’避免本發明在轉動螺检⑴ 的過程中產生滑脫的狀況，因此具有使用的安全性。 此外，當本發明的弧形槽（16)之内壁設為具有複數圓心 鬱的弧形狀態時’由於擒縱顎（2〇)係沿著數段曲率不同的弧形 内壁滑動，因此使得擒縱顎（2〇)内縮時係以數個階段的方式 進行，在各個滑動的階段提供了阻力，因此在本發明鎖緊 螺检（B)的順轉過程中，能避免擒縱顎（2〇)逆向内縮回弧形 槽（16)内的情況，具有提供較大夾持力道的效能。 當本發明的扳手頭（12)逆轉時，如第六圖所示，螺栓（B ) 碩部的頂側壁面會推動擒縱顎（2〇)的頂推面（232)，使檎縱 顎（2〇)相對弧形槽（16)進行順向的滑動，令夾顎部（23)内縮 ©於弧形槽（16)内，使得螺栓（B)於夾面（231)滑脫並讓扳手頭 (12)得以在原地逆向轉動’當扳手頭（12)再度順轉進行的動 作時，螺栓（B)的内端抵靠擒縱顎（2〇)的推進面（22)，使擒 縱顎（20)略為逆轉至足以利用夾面（231)抵靠螺栓（B)的位 置，如此可再進行前述般的，順向轉動螺栓（B )的操作。藉 由重複前述順向、逆向旋轉扳手頭（12)的動作，可達到不需 抽出扳手便能鎖緊螺栓的操作效果。 本發明的弧形槽（16)係由扳手頭（彳2)的内壁凹設，因此 、加工製造時’由中心加工機分別以銑刀以及鍵槽刀即可 201020069 分別加工出鉗制槽（1 3)以及5瓜形槽（1 6)，加工過程一貫而能 維持扳手尺寸的高精度，而擒縱顎（20)係以全外包的形態滑 動嵌設於弧形槽（16)内，僅有用於鉗制螺栓（B)的夾顎部 (23)伸出弧形槽（16)，此外，擒縱顎（2〇)順向段的内壁形狀 由於係對應射制槽（13)的輪廓’因此能以該處作為鉗制槽 (1 3)周圍的内壁’產生止擋作用而發揮較佳的鉗制螺栓（b ) 功效。 當本發明以相對的擒縱顎（2〇)的夾面（231)以及下夾臂 © (15)的下夾持面（152)夾持螺栓（B)時，由於螺栓（B )抵靠於 擒縱顎（20)夾面（231)的施力，會藉由擒縱顎（2〇)的外壁以 緊密抵靠的方式將力量傳遞至弧形槽（16)的内壁，因此能夠 以上夾臂（14)以及下夾臂（15)之間較為剛性的夾持構造來 鉗制螺栓（B )，達到轉動螺栓（B )時施力較大的效果。 再者請參看第四圖，本發明的擒縱顎（2〇)係以可滑動形 態設於弧形槽（16)内，加上定位銷（17)與導孔（21)的順向端 之間具有的緩衝間隙（A)，因此使得本發明應用於大小略有 ❹差異的螺栓（B )時，能藉由擒縱顎（2〇)略為的弧形滑動，微 調夹面（231)適應的角度位置以夹持螺栓（B )，藉此，能令 本發明運用在螺鎖尺寸略有差異的螺栓（B)上時’具有較大 的適應性以及使用的彈性。 相較於既有的單向棘齒扳手，本發明由於擒縱顎（2〇) 係以弧形滑動方式設置，因此弧形槽（16)的深度不需太過深 入，如此使得本發明的上夾臂（14)除了可以設為較薄的形態 以外，亦不容易發生斷裂的情形，因此可以將扳手小型化， 適應使用在螺鎖小尺寸的空間上，讓本發明使用的尺寸廣 12 201020069 泛且具有較高的強度。並由於弧形槽(16)係溝槽的嗖置且兩 側設有側壁（⑻）’因此不需要在^以點焊的方式結合側板 等遮蓋的構造，除了藉由—體的構造增加整體強度以外， 又能避免扳手受衝擊時產生側板掉落的損壞狀況。 以上所述，僅是本#明的較佳實施例，仏卜對本發明 作任何形式上的限制，任何所屬技術領域中具有通常知識 者，若在不脫離本發明所提技術特徵的範圍内，利用本發 明所揭示技術内容所作出局部更動或修飾的等效實施例， ❹ 並且未脫離本發明的技術特徵内容，均仍屬於本發明技術 特徵的範圍内。 【圖式簡單說明】 第一圖係本發明較佳實施例之立體圖。 第二圖係本發明較佳實施例之分解圖。 第三圖係本發明較佳實施例之部分剖面圖。 第四圖係本發明較佳實施例部分放大之剖面圖。 第五圖係本發明較佳實施例之實施示意圖。 φ 第六圖係本發明較佳實施例將扳手本體逆轉之實施示 意圖。 第七圖係既有單向棘齒扳手之分解圖。 【主要元件符號說明】 (11)把柄 (13)鉗制槽 (15)下夾臂 (152)下夾持面 (16〉弧形槽 (1〇)扳手本體 (12)扳手頭 (14)上夾臂 (151)防滑脫凸部 (153)下承受面 13 201020069 (161)侧壁 (162)插銷孔 (1 7)定位銷 (20)擒縱顎 (21)導孔 (22)推進面 (23)夾顎部 (231)夾面 (232)頂推面 (233)小弧面 (Α)緩衝間隙 (C )旋轉間隙 (Β )螺栓 14The present invention provides a movable arcuate jaw for achieving the above purpose, comprising: - a wrench body, the wrench body being provided with a handle having front and rear ends and upper and lower sides Forming a wrench head at the front end of the handle, and forming a sweet-groove groove toward the rear of the front end of the wrench head, corresponding to the upper and lower sides of the clamp, forming an upper clamp arm and a lower clamp arm on the wrench head, The position around the clamping groove is divided into a reverse end close to the upper clamping arm and a direction toward the #, and the upper side of the clamping groove is concavely formed on the β inner wall of the wrench head to form an arcuate groove corresponding to the curved groove. The left and right sides form at least one side wall on the wrench head; and the longitudinal 颚 'the longitudinal 颚 is an arc-shaped block, and is in a sliding shape centripetal in the 4 arc-shaped groove, in the middle of the longitudinal 颚Forming a guiding pin with the side wall of the curved groove forming a guiding hole, wherein the guiding hole is an arc-shaped long hole, and the locating pin passes through the cis end of the guiding hole, and the inner wall of the longitudinal wall Forming at the end - the advancing surface, in the reverse segment of the escapement The inner wall of the ridge of the 4th and 5th ridges protrudes inward from the opposite end of the arcuate groove, and the inner wall of the nip portion forms a nip surface, and the reverse direction of the nip portion 5 201020069 The end forms a pushing surface adjacent to the face of the face. Further, the inner wall shape of the forward direction of the longitudinal direction of the present invention is matched with the contour around the clamping groove. Further, the front end of the inner side of the lower clamp arm of the present invention A rear side of the anti-slip projection is formed to protrude inwardly, and a rear side of the anti-slip projection is formed on the inner side of the lower clamp arm to form a clamping surface, and the rear side of the lower clamping surface is opposite to the inner side of the lower clamping arm. The end forms an inclined lower receiving surface, wherein the lower clamping surface is opposite to the clamping surface of the longitudinal beam, and the lower receiving surface and the lower clamping surface are sandwiched by a refreshing angle of about 6 degrees. Forming a small curved surface at a reverse end of the clamping surface of the longitudinal sill, a buffering gap between the compliant end of the guiding hole and the positioning pin. Preferably, the arc is corresponding to the arc. Forming two of the side walls on the left and right sides of the groove, and inserting a side wall between the two side walls a pin hole, the positioning pin is inserted and inserted between the two pin holes, the guide hole is disposed in the middle of the longitudinal beam, and the pin is provided through the forward end of the guide hole. When in use, the clamp head of the wrench head is clamped around the bolt. When the thread is screwed into the shooting groove, the inner end pushes the thrust surface of the longitudinal sill, and the 7 擒 longitudinal sill slides back to the clamping surface to abut the bolt. Position, then turn the wrench body's with the face of the 擒 颚 配合 配合 相对 相对 相对 相对 相对 , 相对 相对 相对 相对 相对 相对 甜 甜 甜 甜 甜 甜 甜 甜 甜 甜 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' Rotate in the direction and achieve the effect of the screw bolt. When the field turning the wrench head reverses, the corner of the bolt will push the ejector surface of the escapement to make the jaw of the longitudinal slid slip forward and shrink into the arc. In the groove, the bolt can be slipped off the clamping surface, so that the wrench head can be rotated in the reverse direction 6 201020069, so that the forward and reverse rotation of the hand can be repeated, so that the bolt can be locked without pulling out the wrench. efficacy. The design of the curved grooved bag-like structure in which the longitudinal sill is embedded, and the design of the traverse of the escapement along the curved trajectory, so that the present invention is processed or compared to the existing one-way ratchet wrench The utility model has the following advantages: 1. The structure of the escapement and the curved groove of the invention can be used without setting a spring, and the number of parts is reduced, which is economical. Since the curved groove of the present invention is recessed from the inner wall of the wrench head and has a shallow depth, the cutter groove and the curved groove can be milled by the center and the supporter with the milling cutter and the keyway cutter respectively during the manufacturing process. The invention can complete the processing without multiple processes, and in addition to reducing the cost, it also has more precision. ^ m 3. Since the depth of the fox-shaped groove of the present invention is shallow, the thickness around the wrench head does not need to be particularly thick, and in addition to being easily broken, it has the feature of being compact, thereby being suitable for locking. Small size bolts. ❹ 4 Because the escapement of the present invention slides along an arcuate trajectory, which allows the present invention to be applied to bolts of slightly different sizes, the position of the 擒 颚 of the 擒 颚 can be adjusted slightly to accommodate the misalignment The size of the bolt invention has greater application flexibility. 5. Compared with the existing one-way ratchet wrench, the present invention has sufficient strength to avoid the reinforcing structure of the surrounding side plate, such as the arc groove-body forming pocket-like recessed arrangement. When the invention is impacted, there is a concern that the side plates fall off. [Embodiment] 7 201020069 The present invention is a movable curved escapement wrench. Referring to the preferred embodiments of the first to fourth figures, the present invention comprises: a wrench body (10), the wrench body (10) is provided with a handle (11) The handle (1Ί) has front and rear ends and upper and lower sides, and a wrench head (12) is formed at the front end of the handle (彳彳), and the wrench head (12) is a disc-shaped plate body. The middle of the front end of the wrench head (12) is recessed backward to form a clamping groove (13), and the upper and lower sides of the corresponding clamping groove (彳3) form an upper clamping arm (14) and a lower clamp on the wrench head (12). The arm (15), in turn, divides the position around the clamping groove (13) into a reverse end toward the upper clamp arm (14) and a forward end near the lower clamp arm (15); the lower clamp arm (15) The front end of the inner side surface protrudes inwardly to form a non-slip projection (151). The rear side of the non-slip projection (151) is formed on the inner side of the lower clamp arm (15) to form a lower clamping surface (152). The rear of the lower clamping surface (152) forms an inclined lower receiving surface (153) at the rear end of the inner side surface of the lower clamping arm (15), and the lower receiving surface 53) and the lower clamping surface 1 52) An angle of about 60 degrees is sandwiched between them; corresponding to the upper side of the upper side of the clamping groove (13), an arcuate groove (16) is formed in the inner wall of the wrench head (12), and the arc groove ( The inner wall of 16) may be a single or an arc-shaped state having a plurality of centers, and the left and right sides of the corresponding arc-shaped groove (16) respectively form a side wall (161) on the wrench (12) on both side walls ( 161) Between the two-pin hole (162), a locating pin (17) is inserted between the two pin holes (162) by means of a snap fit or a screw lock. A longitudinal 颚 (20), a longitudinal 颚 (2 〇) is a curved block and is disposed in the arcuate groove (16). The shape of the outer wall of the 擒 (2Q) is matched with the inner wall of the curved groove (16). Shape:: Shape 'In this way, the longitudinal 颚 (2〇) can be moved along the inner soil β of the curved groove (16), and the positioning pin (17) is inserted in the middle of the longitudinal 颚 (20). A guide hole () guide hole (2 1) is an arc-shaped long hole, and a pin is provided at the forward end (1 201020069 passes through, the guide hole is called the outer side of the peripheral wall of the cis end and the positioning pin (17), the gap (eight)' is thereby buffered The gap (8) provides the vertical deformation: the margin of movement; η α The shape of the inner wall of the escapement (2〇) is matched with the rim around the sweet groove (13), whereby the shape can fill the curved groove (10), so that the wall around the clamping groove (13) is complete, and has the same clamping function as the inner wall of the wrench body (1〇), forming a pushing surface at the forward end of the inner wall of the escapement (20) (22) ), the advancing surface (22) protrudes slightly toward the inside of the clamping groove (13), and when the screw (β) is inserted into the sweet groove (13) and is subjected to (4), the angle of the inner end of the bolt (Β) and the advancing surface (22) Between - there is a rotation gap (c) 'This provides a margin for the squat (2 〇) to slide around the bolt (Β). The reverse section of the 擒(颚) (20) forms a jaw (23), the jaw (23) The inner wall protrudes inwardly from the opposite end of the curved groove (16), and an inner surface of the clamping portion (23) faces the inner surface of the clamping portion (23) opposite to the lower clamping surface 52). The reverse end of 23) forms a pushing surface (232) adjacent to the clamping surface (231), and protrudes inward at the opposite end of the clamping surface (231) to form a small curved surface (233) by a small arc © The face (233) can snap the head of the thread (Β), thereby providing an anti-slip and anti-off effect. The present invention, in addition to the preferred embodiment described above, is a positioning pin fixed between the side walls (161). (1) In conjunction with the guide hole (21) of the escapement (20), and in addition to the effect of limiting the sliding stroke of the escapement (20), a hole similar to the guide hole (21) may be inserted through the two side walls ( Between 161), the positioning pin (17) is changed to the shape of the 擒 longitudinal display (20). The configuration of the locating pin (17) sliding along the arcuate holes of the two side walls (161) also reaches the limit. Longitudinal (2〇) sliding stroke effect The design of the position where the positioning pin (17) and the guide hole (21) are interchanged, the present invention is not limited herein to 9 201020069. Furthermore, the preferred embodiment of the present invention is divided into the left and right of the curved groove (16). The side wall (161) is formed on both sides, and the arcuate groove (16) may be configured to be open on one side, and the other side of the arcuate groove (16) forms the side wall on the wrench head (12). (161), in combination with the positioning pin (17) on the side wall (161), the positioning lock (17) is traversed in the arcuate groove (1e) and inserted into the guide hole of the longitudinal (2〇) (21), also achieves the effect of limiting the squat (2 〇) sliding stroke; the aforementioned side wall (161) of the curved groove (16) is formed on one side or both sides, and the present invention is not limited thereto. When using the preferred embodiment of the invention, please refer to the third to fifth figures, the screw inspection (B) is placed in the clamping groove (13), when the head of the bolt enters the clamping groove (13), if the longitudinal direction ( 20) When the sliding end is in a state of sliding toward the forward direction so that the forward end protrudes from the curved groove (16), refer to the fifth figure, the shape is matched with the bolt) the escapement of the head (20) The entry surface (22) will be subjected to screw inspection (B) to the screw inspection (b). The process towel of the clamp will be pulled forward (2C^ the forward end of the push surface (a) is pushed by the bolt (B) to make the escapement颚 (2〇) moves backward along the inner wall of the arcuate groove (16) to a position close to the screw check (B) as close to that shown in the second figure. When the bolt (B) of the present invention is rotated, the handle (1) is driven to rotate the wrench head (12) in the forward direction, and when the rotation starts, the face of the escapement (2〇) is threaded (B) to be topped. Abutting and generating a slightly reverse slip, thereby moving to a position where the lower clamping surface (152) can be screwed together (8), and the lower bearing surface (153) is abutted against the bolt (B) The surface on the back side. When the face (231) initially abuts against the surface of the bolt (B), the small curved surface (233) which is reversed due to the facet is convex, so that the face 201020069 (231) and the bolt (B) head A slight gap is created between the surfaces of the parts. When the handle (11) is continuously turned in the direction, thereby increasing the pressure, since the upper clamp arm (14) of the wrench head (12) is slightly deformed, the face of the escapement (2〇) is ( 23彳) will be tightly attached to the upper surface of the head of the bolt (B), while the small curved surface (233) protruding inward and the non-slip protruding portion (151) at the front end of the lower central arm (15) will tighten the snail Inspection (b), in the case of the rotation process, produces an anti-offset effect 'to avoid the situation in which the present invention slips off during the turning screw inspection (1), and thus has safety in use. Further, when the inner wall of the arcuate groove (16) of the present invention is set to have an arcuate state of a plurality of centered depressions, the escapement is caused by the squatting of the inner wall of the curved section which is different in curvature.颚(2〇) retraction is performed in several stages, providing resistance at each sliding stage, so in the process of the locking screw inspection (B) of the present invention, the escapement can be avoided (2) 〇) Reversely retracting into the arc groove (16), with the ability to provide a larger clamping force. When the wrench head (12) of the present invention is reversed, as shown in the sixth figure, the top side wall surface of the bolt (B) pushes the pushing surface (232) of the longitudinal 颚 (2〇) to make the longitudinal 颚(2〇) sliding in a forward direction with respect to the arcuate groove (16), so that the clamping portion (23) is retracted into the arcuate groove (16), so that the bolt (B) slides off the clamping surface (231) and Allowing the wrench head (12) to rotate in the reverse direction. When the wrench head (12) is re-shunned, the inner end of the bolt (B) abuts against the advancement surface (22) of the longitudinal 颚 (2〇). The escapement (20) is slightly reversed to a position sufficient to utilize the face (231) against the bolt (B), so that the above-described operation of turning the bolt (B) forward can be performed. By repeating the above-described forward and reverse rotation of the wrench head (12), the operation effect of locking the bolt without pulling out the wrench can be achieved. The curved groove (16) of the present invention is recessed by the inner wall of the wrench head (彳2). Therefore, when manufacturing, the centering machine can respectively process the clamping groove by using the milling cutter and the keyway cutter respectively (2010). ) and 5 melon-shaped grooves (16), the processing process is consistent and can maintain the high precision of the wrench size, and the escapement (20) is slidingly embedded in the curved groove (16) in the form of full outsourcing, only used The clamping portion (23) of the clamping bolt (B) projects out of the arcuate groove (16), and further, the shape of the inner wall of the forward section of the longitudinal 颚 (2〇) corresponds to the contour of the firing groove (13). It is possible to use this as a stop function for the inner wall around the clamp groove (13) to exert a better clamp bolt (b) effect. When the present invention holds the bolt (B) with the opposite 擒 (2〇) face (231) and the lower clamping arm © (15) of the lower clamping face (152), the bolt (B) abuts The force applied to the facet (231) of the longitudinal 颚 (20) will transmit the force to the inner wall of the curved groove (16) by the outer wall of the longitudinal 颚 (2 〇), so The relatively rigid clamping structure between the clamp arm (14) and the lower clamp arm (15) clamps the bolt (B) to achieve a large force application when the bolt (B) is rotated. Referring to the fourth figure, the escapement (2〇) of the present invention is slidably disposed in the arcuate groove (16), and the locating pin (17) and the forward end of the guide hole (21) are added. There is a buffer gap (A) between them, so that when the present invention is applied to a bolt (B) having a slight difference in size, it can be finely adjusted by the arcuate sliding of the longitudinal 颚 (2〇) (231). The angular position of the adaptation is such that the bolt (B) is clamped, whereby the invention can be used with a large adaptability and elasticity of use when the bolts (B) having slightly different screw lock sizes are used. Compared with the existing one-way ratchet wrench, the depth of the arcuate groove (16) is not required to be too deep, since the longitudinal direction (2〇) is arranged in a curved sliding manner, so that the present invention In addition to the fact that the upper clamp arm (14) can be set to a thinner shape, it is less prone to breakage, so that the wrench can be miniaturized and adapted to be used in a small size space of the screw lock, so that the size of the invention is wide. 201020069 is broad and has a high intensity. And because the arcuate groove (16) is formed by the groove and the side wall ((8)) is provided on both sides, it is not necessary to combine the structure of the side plate or the like in a spot welding manner, except that the whole body is added by the body structure. In addition to the strength, it can avoid the damage of the side plate falling when the wrench is impacted. The above description is only a preferred embodiment of the present invention, and any form of the invention is limited, and any one of ordinary skill in the art, without departing from the technical features of the present invention, Equivalent embodiments that make local modifications or modifications made using the teachings of the present invention, and without departing from the technical features of the present invention, are still within the scope of the technical features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The first drawing is a perspective view of a preferred embodiment of the present invention. The second drawing is an exploded view of a preferred embodiment of the invention. The third drawing is a partial cross-sectional view of a preferred embodiment of the invention. Figure 4 is a partially enlarged cross-sectional view of a preferred embodiment of the present invention. The fifth drawing is a schematic view of the implementation of the preferred embodiment of the present invention. The sixth figure is an embodiment of the preferred embodiment of the present invention for reversing the body of the wrench. The seventh figure is an exploded view of a one-way ratchet wrench. [Main component symbol description] (11) Handle (13) clamp groove (15) lower clamp arm (152) lower clamping surface (16> arc groove (1〇) wrench body (12) wrench head (14) upper clamp Arm (151) non-slip sag (153) lower bearing surface 13 201020069 (161) side wall (162) pin hole (1 7) locating pin (20) 擒 颚 (21) guide hole (22) pushing surface (23 ) clamping portion (231) clamping surface (232) pushing surface (233) small curved surface (Α) buffering gap (C) rotating gap (Β) bolt 14