201134613 六、發明說明： 【發明所屬之技術領域】 本發明與輕便機動工具有關，特別是有關於一種棘輪 扳手動力工具。 【先前技術】 所謂的輕便機動工具，是指使用者能夠手持使用，且 利用氣體、電能，或它種動力，驅動機械進行作業的工具。 • 針對各種作業型態分類，常見的有直線位移作業與轉動作 業兩種。直線位移作業如打釘搶等。轉動作業如電鑽與扳 手等。就轉動作業的輕便機動工具來說，除了使用在鑽孔 外，也常用以鎖固螺絲、螺帽等工件。但不論哪種用途， 都必須具備切換正轉或反轉的功能。 【發明内容】 本發明之一技術態樣在於提供一種動力工具，利用導 • 引柱使二棘爪的其中之一遠離齒輪，讓齒輪只與一棘爪嚙 合，以控制齒輪的旋轉方向。 根據本發明一實施方式，一種動力工具包含一殼體、 一齒輪、一第一棘爪、一第二棘爪、一彈性元件、一第一 滑塊、一第一導引柱與一傳動機構。其中齒輪樞設於殼體。 第二棘爪配合齒輪。彈性元件連接第一棘爪與第二棘爪， 使第一棘爪與第二棘爪向齒輪靠近。第一滑塊可線性位移 地設置於殼體。第一導引柱連接第一滑塊，用以將第一棘 爪推離齒輪。傳動機構連接第一棘爪與第二棘爪，用以驅 201134613 動第一棘爪與第二棘爪往復位移。 根據本發明另一實施方式，一種動力工具包含一殼 體、一齒輪、至少二棘爪、一彈性元件、至少二滑塊、至 少二導引柱與一傳動機構。其中齒輪樞設在殼體。二棘爪 之間定義為内侧，各棘爪的内侧包含一凸緣與一導槽。彈 性元件用以帶動二棘爪向齒輪的方向偏壓^二滑塊可線性 位移地設置在殼體。二導引柱與二滑塊連接，用以推抵二 棘爪。其中一導引柱推抵一棘爪的凸緣，使前述棘爪遠離 齒輪；另一導引柱則位於另一棘爪的導槽内，使前述棘爪 與齒輪喊合。傳動機構連接二棘爪，用以驅動二棘爪往復 位移。 【實施方式】 第1圖繪示本發明一實施方式之動力工具的剖視圖。 如圖所示，動力工具包含一殼體1〇〇、一齒輪2〇〇、一第 一棘爪310、一第二棘爪320、一彈性元件400、一第一 滑塊510、一第一導引柱610與一傳動機構700。其中齒 輪200柩設於殼體100。第二棘爪320配合齒輪200。彈 性元件400連接第一棘爪310與第二棘爪32〇。第一滑塊 510可線性位移地設置於殼體1〇〇。第一導引柱61〇連接 第一滑塊510，用以將第一棘爪31〇推離齒輪2〇〇 ^傳動 機構700連接第一棘爪310與第二棘爪32〇，用以驅動第 一棘爪310與第二棘爪320往復位移。 前述的第一棘爪310與第二棘爪32〇,將第一棘爪31〇 與第二棘爪320之間定義為内側。第一棘爪31〇的内侧包 201134613 含一第一凸緣311與一第一導槽312，第一凸緣311設置 於第一導槽312的末端。第二棘爪320的内側包含一第二 凸緣321與一第二導槽322，第二凸緣321設置於第二導 槽322的末端。 前述的動力工具’還包含一第二導引柱620。第一導 引柱610推抵第一棘爪31〇的第一凸緣311，第二導弓丨权 620位於第二棘爪320的第二導槽322内。 前述的動力工具’還包含一第二滑塊520。第二滑壤 φ 520可線性位移地設置於殻體1〇〇，且與第二導弓丨桂62〇 連接。 前述的動力工具，還包含一逆轉裝置800。逆轉裝置 800設置於殼體100’且位於第一滑塊510與第二滑塊52〇 之間，用以使第一滑塊51〇與第二滑塊520朝相反方向位 移。本實施方式中’逆轉裝置800為一逆轉齒輪，且逆轉 齒輪樞設在殼體100，並分別嚙合第一滑塊51〇與第二、a 塊 520。 、一)月 • 第2圖繪示第1圖之第二棘爪320推動齒輪2〇〇扩輟 的剖視圖。操作時，彈性元件400會使第一棘爪31〇 = 二棘爪320向齒輪200位移。第一導引柱61〇會推抵第一 棘爪310的第一凸緣311 ’使第一棘爪31〇遠離齒輪 如此’只有第一棘爪320與齒輪200喷合。當傳動機構 驅動第二棘爪320往復位移，第二棘爪320向齒輪2〇〇 移時’會推動齒輪200旋轉；第二棘爪320復位時，會^ 齒輪200脫離嚙合且獨自復位。因此第二棘爪32〇在往復 位移的過程中’會推動齒輪200單向旋轉。其中彈性元件 201134613 400,可由第一棘爪310與第二棘爪32〇之間，拉動第一 棘爪310與第二棘爪320向齒輪2〇〇靠近；也可由第一棘 爪310與第二棘爪320外側，推動第一棘爪31〇與第二棘 爪320向齒輪200靠近。本實施方式的彈性元件4〇〇，是 以拉動第一棘爪310與第二棘爪32〇的方式為例。 第3圖緣不第1圖之第一棘爪31〇與齒輪2〇〇响合， 第二棘爪320遠離齒輪200的剖視圖。當使用者推動第一 滑塊510，使第一導引柱6，〇由第一棘爪3，〇的第一凸緣 鲁3Ί1處移動至第一導槽312處，彈性元件棚能使第一棘 爪310向齒輪200位移並嚙合。 同時’第一滑塊510透過逆轉裝置8〇〇，帶動第二滑 =20位移’使第二導引柱62〇由第二棘爪的第二導 :絲移動至第二凸緣321處’第二導引柱620推抵第 二丨、2〇的第二凸緣321 ’使第二棘爪320遠離齒輪 的刘 '目m矣會不第3圖之第一棘爪310推動齒輪200旋轉 位二⑤1如此’當傳動機構700驅動第一棘爪310往復 200心棘爪31Q便能在往復位移的過程中，推動齒輪 ZOO在另一方向旋轉。 使：tiff過程中，能選擇其中-導引枉610、620 -棘爪si。:動離齒輪20Q，讓齒輪200只受 -_控制時， 會被逆轉裝置_ w q塊51〇，另—滑塊520 的位置。如* π帶動移，同時改變二導引枉610、620 ，吏用者握持動力工具時，只要用拇指，就 I Si 201134613 能推動其中一滑塊510、520，進而改變齒輪200的旋轉 方向。達到使用單手切換旋轉方向的效果。 第5圖繪示沿著第1圖之線5-5的剖視圖。齒輪200 另包含至少一盲孔210、至少一彈簧220與至少一鋼珠 230。彈簧220與鋼珠230依序容納在盲孔210内，使彈 簧220推抵鋼珠230向盲孔210外位移。當齒輪200設置 在殼體100時，鋼珠230會受彈簧220推抵而抵頂殼體 100 ’以增加齒輪200與殼體1〇〇之間的阻力。如此，當 棘爪310、320復位時’便不易意外帶動齒輪2〇〇往回旋 轉。 第6圖繪示第1圖之第一滑塊51〇設置於殼體彳〇〇的 剖視圖。殼體100上包含一第一軌道11〇與一第二軌道 120。第一軌道11〇供第一滑塊510滑動，第二軌道120 供第一滑塊520滑動β各軌道11〇、120包含二凹槽111、 121，各滑塊510、520包含一盲孔511、521、一彈簧512、 522 與一鋼珠 513、523。彈簧 512'522 與鋼珠 513、523 依序容納在盲孔511、521内，使彈簧512、522推抵鋼珠 513、523向盲孔511、521外位移。當二滑塊51〇、520 在執道上滑動時，鋼珠513、523能進入凹槽111、112。 如此’能提供各滑塊510、520定位的功能。 參照第1圖，此實施方式中，傳動機構7〇〇包含一樞 轴710、一擺動件720與一偏心旋轉件73〇。樞軸71〇將 擺動件720樞設在殼體1〇〇。擺動件72〇分別與第一棘爪 310及第一棘爪320樞接。第一棘爪31〇與第二棘爪320 樞設在擺動件720的位置’位於樞軸71〇的兩側。擺動件 m 201134613 720具-凹槽721。偏心旋轉件73〇包含—偏心塊731， 偏心塊731容納在凹槽721 π。當偏心旋轉件73〇受驅動 旋轉時，能驅動擺動件720以樞軸71〇為中心往復擺動。 擺動件720並同時帶動第-棘爪31Q與第二棘爪32〇，使 第-棘爪310與第二棘爪320往復位移。其中驅動偏心旋 轉件730旋轉的動力源，為習知技術，故於此不再贅述。201134613 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a portable power tool, and more particularly to a ratchet wrench power tool. [Prior Art] The so-called portable maneuvering tool refers to a tool that a user can use by hand and use a gas, electric energy, or a kind of power to drive a machine to perform work. • For various job type classifications, there are two types of linear displacement and shifting operations. Linear displacement operations such as nailing and grabbing. Turn the work such as electric drills and wrenches. For the lightweight maneuvering tool for turning work, in addition to being used for drilling, it is also commonly used to lock workpieces such as screws and nuts. But for any use, you must have the ability to switch forward or reverse. SUMMARY OF THE INVENTION One aspect of the present invention provides a power tool that uses a guide post to move one of the two pawls away from the gear so that the gear only engages a pawl to control the direction of rotation of the gear. According to an embodiment of the invention, a power tool includes a housing, a gear, a first pawl, a second pawl, an elastic component, a first slider, a first guiding post and a transmission mechanism. . The gear is pivoted to the housing. The second pawl cooperates with the gear. The elastic member connects the first pawl and the second pawl to bring the first pawl and the second pawl toward the gear. The first slider is linearly displaceably disposed to the housing. The first guide post is coupled to the first slider for pushing the first pawl away from the gear. The transmission mechanism connects the first pawl and the second pawl for driving the 201134613 to move the first pawl and the second pawl reciprocally. In accordance with another embodiment of the present invention, a power tool includes a housing, a gear, at least two pawls, an elastic member, at least two sliders, at least two guide posts, and a transmission mechanism. The gear is pivoted to the housing. The two pawls are defined as the inner side, and the inner side of each pawl includes a flange and a guide groove. The elastic element is used to drive the two pawls to bias in the direction of the gear. The two sliders are linearly displaceably disposed in the housing. The two guide posts are connected to the two sliders for pushing against the two pawls. One of the guide posts pushes against the flange of the pawl to move the pawl away from the gear; the other guide post is located in the guide groove of the other pawl, causing the pawl to engage with the gear. The transmission mechanism connects the two pawls for driving the two pawls to reciprocate. [Embodiment] FIG. 1 is a cross-sectional view showing a power tool according to an embodiment of the present invention. As shown, the power tool includes a housing 1 , a gear 2 , a first pawl 310 , a second pawl 320 , an elastic component 400 , a first slider 510 , and a first The guide post 610 is coupled to a transmission mechanism 700. The gear wheel 200 is disposed on the housing 100. The second pawl 320 engages the gear 200. The resilient member 400 connects the first pawl 310 with the second pawl 32A. The first slider 510 is linearly displaceably disposed to the housing 1A. The first guiding post 61 is connected to the first slider 510 for pushing the first pawl 31 离 away from the gear 2 传动 ^ transmission mechanism 700 to connect the first pawl 310 and the second pawl 32 〇 for driving The first pawl 310 and the second pawl 320 are reciprocally displaced. The aforementioned first pawl 310 and the second pawl 32 are defined as the inner side between the first pawl 31 〇 and the second pawl 320. The inner package 201134613 of the first pawl 31 includes a first flange 311 and a first guide groove 312, and the first flange 311 is disposed at the end of the first guide groove 312. The inner side of the second pawl 320 includes a second flange 321 and a second guide groove 322. The second flange 321 is disposed at the end of the second guide groove 322. The aforementioned power tool 'also includes a second guide post 620. The first guide post 610 is pushed against the first flange 311 of the first pawl 31A, and the second guide arch 620 is located in the second guide groove 322 of the second pawl 320. The aforementioned power tool 'also includes a second slider 520. The second soil φ 520 is linearly displaceably disposed in the casing 1 〇〇 and is connected to the second guide bow 〇 62 。. The aforementioned power tool further includes a reversing device 800. The reversing device 800 is disposed between the first slider 510 and the second slider 52A and is disposed to move the first slider 51 and the second slider 520 in opposite directions. In the present embodiment, the reversing device 800 is a reversing gear, and the reversing gear is pivotally mounted on the housing 100 and engages the first slider 51 and the second and a block 520, respectively. (1) Months • Fig. 2 is a cross-sectional view showing the second pawl 320 of Fig. 1 pushing the gear 2 to expand. In operation, the resilient member 400 will displace the first pawl 31 〇 = two pawls 320 toward the gear 200. The first guide post 61 will push against the first flange 311 ' of the first pawl 310 to disengage the first pawl 31 away from the gear so that only the first pawl 320 is sprayed with the gear 200. When the transmission mechanism drives the second pawl 320 to reciprocate, the second pawl 320 moves toward the gear 2, which pushes the gear 200 to rotate; when the second pawl 320 is reset, the gear 200 is disengaged and resets by itself. Therefore, the second pawl 32 will push the gear 200 to rotate in one direction during the reciprocating displacement. The elastic element 201134613 400, between the first pawl 310 and the second pawl 32〇, pulls the first pawl 310 and the second pawl 320 toward the gear 2; or the first pawl 310 and the first The outer side of the second pawl 320 pushes the first pawl 31A and the second pawl 320 toward the gear 200. The elastic member 4A of the present embodiment is exemplified by a method of pulling the first pawl 310 and the second pawl 32A. In the third drawing, the first pawl 31A of the first figure is coupled to the gear 2, and the second pawl 320 is away from the sectional view of the gear 200. When the user pushes the first slider 510 to move the first guiding post 6, the first pawl 3, the first flange Ί3Ί1 of the cymbal to the first guiding slot 312, the elastic component shed can enable A pawl 310 is displaced and engaged with the gear 200. At the same time, 'the first slider 510 passes through the reversing device 8〇〇, and the second sliding=20 displacement' causes the second guiding post 62 to be moved by the second guiding of the second pawl: the wire to the second flange 321' The second guiding post 620 pushes against the second flange 321 ' of the second cymbal, 2 ' 'to move the second pawl 320 away from the gear of the gear. The first pawl 310 of the third figure pushes the gear 200 to rotate. Bit 2 51 is such that when the transmission mechanism 700 drives the first pawl 310 to reciprocate the 200-pronged pawl 31Q, the gear ZOO can be rotated in the other direction during the reciprocating displacement. In the process of tiff, the guide 枉 610, 620 - pawl si can be selected. : When the gear 20 is moved away from the gear 20, the gear 200 is only subjected to the -_ control, and the position of the slider 520 is reversed by the device _ w q block 51 。. If * π is moved, and the two guiding guides 610, 620 are changed at the same time, when the user holds the power tool, I Si 201134613 can push one of the sliders 510, 520 and change the rotation direction of the gear 200 as long as the thumb is used. . The effect of switching the direction of rotation with one hand is achieved. Figure 5 is a cross-sectional view taken along line 5-5 of Figure 1. The gear 200 further includes at least one blind hole 210, at least one spring 220 and at least one steel ball 230. The spring 220 and the steel ball 230 are sequentially accommodated in the blind hole 210, and the spring 220 is pushed against the steel ball 230 to be displaced outside the blind hole 210. When the gear 200 is disposed in the housing 100, the steel ball 230 is urged against the top housing 100' by the spring 220 to increase the resistance between the gear 200 and the housing 1〇〇. Thus, when the pawls 310, 320 are reset, it is not easy to accidentally drive the gear 2 to rotate back. Fig. 6 is a cross-sectional view showing the first slider 51 of Fig. 1 disposed on the casing 。. The housing 100 includes a first track 11 〇 and a second track 120. The first track 11 is slid by the first slider 510, and the second track 120 is slid by the first slider 520. Each track 11 〇, 120 includes two grooves 111, 121, and each of the blocks 510, 520 includes a blind hole 511. , 521, a spring 512, 522 and a steel ball 513, 523. The spring 512'522 and the steel balls 513, 523 are sequentially accommodated in the blind holes 511, 521, and the springs 512, 522 are pushed against the steel balls 513, 523 to be displaced outside the blind holes 511, 521. When the two sliders 51A, 520 slide on the way, the steel balls 513, 523 can enter the grooves 111, 112. Thus, the function of positioning the sliders 510, 520 can be provided. Referring to Fig. 1, in this embodiment, the transmission mechanism 7 includes a pivot shaft 710, a swinging member 720 and an eccentric rotating member 73A. The pivot 71 turns the swinging member 720 to the housing 1''. The swinging members 72 are pivotally coupled to the first pawl 310 and the first pawl 320, respectively. The first pawl 31'' and the second pawl 320 are pivotally disposed at the position of the swinging member 720' on both sides of the pivot 71''. Swinging member m 201134613 720-recess 721. The eccentric rotating member 73A includes an eccentric block 731, and the eccentric block 731 is accommodated in the recess 721π. When the eccentric rotating member 73 is driven to rotate, the swinging member 720 can be driven to reciprocate around the pivot 71 。. The swinging member 720 simultaneously drives the first pawl 31Q and the second pawl 32A to reciprocate the first pawl 310 and the second pawl 320. The power source for driving the rotation of the eccentric rotating member 730 is a conventional technique, and thus will not be described herein.
前述齒輪200受驅動旋轉時，可作為輸出動力使用。 例如在齒輪200上安裝套筒，便能利用套筒開啟或鎖緊螺 帽。另外，讓齒輪200驅動套筒旋轉，也能達到相同功能。 第7圖繪示第1圖之動力:L具增設一連接頭的剖視 圖。殼體上100增設-連接頭900，連接頭9〇〇能連接工 具。且連接頭900樞設在殼體1〇〇上，連接頭9〇〇又與齒 ，喷合。利用齒輪200驅動連料_旋轉，便能讓連接 2接碩900上的工具旋轉。當工具為套筒，便能開啟或 、螺帽；當工具為起子頭’便能鬆開或鎖緊螺絲。When the aforementioned gear 200 is driven to rotate, it can be used as an output power. For example, by mounting a sleeve on the gear 200, the sleeve can be used to open or lock the nut. In addition, the same function can be achieved by having the gear 200 drive the sleeve to rotate. Fig. 7 is a cross-sectional view showing the power of Fig. 1 with the addition of a connector. The housing 100 is provided with a connector 900 that can be connected to the tool. And the connecting head 900 is pivoted on the casing 1 ,, and the connecting head 9 is again sprayed with the teeth. By using the gear 200 to drive the splicing_rotation, the tool on the connection 2 can be rotated. When the tool is a sleeve, the nut can be opened or the nut; when the tool is a screwdriver head, the screw can be loosened or locked.
雖然本發明已以實施方式揭露如上’然其並非用以限 2發明，，任何熟習此技藝者，在不脫離本發明之精神和 ^内*可作各種之更動與潤舞，因此本發明之保護範 圍备視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 第1圖緣示本發明-實施方式之動力工具的剖視圖。 第2圖繪不第i圖之第二棘爪推動齒輪旋轉的剖視圖。 第3⑽示第j圖之第—棘爪與齒輪喃合，第二棘爪 通離齒輪的剖視圖。 201134613 第4圖繪示第3圖之第一棘爪推動齒輪旋轉的剖視圖。 第5圖繪示沿著第1圖之線5-5的剖視圖。 第6圖繪示第1圖之第一滑塊設置於殼體的剖視圖。 第7圖繪示第1圖之動力工具增設一連接頭的剖視圖。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any skilled person skilled in the art can make various changes and dances without departing from the spirit and scope of the present invention. The scope of protection shall be subject to the definition of the scope of the patent application attached. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a power tool according to an embodiment of the present invention. Fig. 2 is a cross-sectional view showing the rotation of the second pawl pushing gear of the second drawing. The third (10) shows the first figure of the jth - the pawl is coupled to the gear, and the second pawl is taken away from the gear. 201134613 Figure 4 is a cross-sectional view showing the rotation of the first pawl pushing gear of Figure 3. Figure 5 is a cross-sectional view taken along line 5-5 of Figure 1. FIG. 6 is a cross-sectional view showing the first slider of FIG. 1 disposed on the housing. Figure 7 is a cross-sectional view showing the addition of a connector to the power tool of Figure 1.
【主要元件符號說明】 100 殼體 511 ： 盲孔 110 第一執道 512 ： 彈簧 111 凹槽 513 ： 鋼珠 120 第二執道 520 ： 第二滑塊 121 凹槽 521 ： 盲孔 200 齒輪 522 ： 彈簧 210 盲孔 523 ： 鋼珠 220 彈簧 610 ： 第一導引柱 230 鋼珠 620 ： 第二導引柱 310 第一棘爪 700 ： 傳動機構 311 第一凸緣 710 ： 樞抽 312 第一導槽 720 ： 擺動件 320 第二棘爪 721 ： 凹槽 321 第二凸緣 730 ： 偏心旋轉件 322 第二導槽 731 ： 偏心塊 400 彈性元件 800 ： 逆轉裝置 510 第一滑塊 900 ： 連接頭[Main component symbol description] 100 Housing 511: Blind hole 110 First way 512 : Spring 111 Groove 513 : Steel ball 120 Second 520 : Second slider 121 Groove 521 : Blind hole 200 Gear 522 : Spring 210 blind hole 523: steel ball 220 spring 610: first guiding column 230 steel ball 620: second guiding column 310 first pawl 700: transmission mechanism 311 first flange 710: pivoting 312 first guiding groove 720: swing Piece 320 Second pawl 721: Groove 321 Second flange 730: Eccentric rotary member 322 Second guide groove 731: Eccentric block 400 Elastic element 800: Reverse device 510 First slider 900: Connector