200812820 九、發明說明： 【發明所屬之技術領域】 f發明係有關於-種饋紙機構，特別係有關於_種可 防止多張進紙（Multi-Feed)之饋紙機構。 【先前技術】 播”首先請參閱帛1圖，習知饋紙機構10主要係由—置紙200812820 IX. Description of the invention: [Technical field to which the invention pertains] The f invention relates to a paper feeding mechanism, and particularly relates to a paper feeding mechanism capable of preventing multi-feeding. [Prior Art] Broadcasting First, please refer to Figure 1, the conventional paper feeding mechanism 10 is mainly based on - paper
歸纸；14、一轉軸16、一取紙臂18以及-設置 = 取紙滾輪19所組成。如圖所示，前述 厂6祕兩端係固定於置紙槽12兩側，取紙臂18則盥轉軸 」t外分紙器14係固定於置紙槽12底部。 紙臂18^Γ § ’當置紙槽12内之紙張厚度改變時，前述取 合轉軸Μ旋轉，使得取紙滾輪19可持續地壓 紙滾輪^帶動張前進。特別地是，當取 阻㈣^ 張下緣係受縣紙器14的 缺I *折曲（buekling)，因此可達到單張進紙的目的。 ，、、、、而，有鐘於分紙器14與紙張間之夾角通常為純角，因此 在放置紙張時可能由於力量過大而使紙張越過分紙器 14進而產生多張進紙（Multi-Feed)的現象。 【發明内容】 本發明提供一種饋紙機構，適用於一事務機，其主要 包括一殼體、一擋止件、一搖臂齒輪機構以及一轉動件。 上述殼體具有-置紙槽，用以容置至少—可記錄媒體。上 0535-A21232TWF(N2)；A04473；TKLIN 6 200812820 述擋止件樞設於殼體上，其中擋止件係相對於前述可記錄 媒體於一第一角度以及一第二角度之間運動。上述搖臂齒 輪機構活動地樞設於殼體，具有一主動齒輪、一第一齒輪 列以及一第二齒輪列，其中第一、第二齒輪列分別位於主 動齒輪之相反側並且與主動齒輪嚙合。前述轉動件樞設於 殼體上，具有一凸輪以及一缺齒齒輪，上述缺齒齒輪與凸 輪固接，且凸輪與擋止件相接觸。特別地是，當搖臂齒輪 機構位於一第一位置時，第一齒輪列與缺齒齒輪嚙合以驅 _ 使凸輪朝一第一方向旋轉，進而帶動擋止件旋轉至前述第 一角度；當搖臂齒輪機構位於一第二位置時，第二齒輪列 與缺齒齒輪嚙合以驅使凸輪朝前述第一方向旋轉，進而帶 動擋止件旋轉至前述第二角度。 於一較佳實施例中，前述缺齒齒輪具有一缺齒部，當 搖臂齒輪機構位於第一位置且第一齒輪列運動至上述缺齒 部時，搖臂齒輪機構脫離轉動件，使得擋止件維持於第一 角度。 • 於一較佳實施例中，當前述搖臂齒輪機構位於第二位 置且第二齒輪列運動至缺齒部時，搖臂齒輪機構脫離轉動 件，使得擋止件維持於第二角度。 於一較佳實施例中，前述擔止件具有一枢轴以及一播 止部，其中枢轴枢接殼體，擋止部與凸輪相接觸。 於一較佳實施例中，前述擋止部具有一凸塊，上述凸 塊係與凸輪相接觸。 於一較佳實施例中，前述凸塊係為一彈性構件。 0535-A21232TWF(N2);A04473;TKLIN 7 200812820 於一較佳實施例中，前述饋紙機構更包括一取紙滾 輪，上述取紙滾輪連接殼體，當擂止件位於前述第二角度 時，取紙滾輪驅動前述可記錄媒體朝一饋紙方向前進。 於一較佳實施例中，當前述擋止件旋轉至第一角度 時，擋止件阻擋可記錄媒體朝前述饋紙方向運動。 於一較佳實施例中，前述第二角度係大於第一角度。 於一較佳實施例中，前述第一齒輪列具有奇數個第一 齒輪，且第二齒輪列具有偶數個第二齒輪。 Φ 於一較佳實施例中，前述搖臂齒輪機構更包括一搖 臂，前述主動齒輪與第一、第二齒輪列皆設置於搖臂上。 於一較佳實施例中，前述搖臂齒輪機構係藉由主動齒 輪帶動而於第一、第二位置之間切換。 於一較佳實施例中，前述缺齒齒輪與凸輪係為一體成 形0 【實施方式】 請參閱第2圖，該圖係表示本發明之饋紙機構示意 圖。上述饋紙機構可設置於一事務機或列印裝置中，其主 要包括一殼體Η、一檔止件51、一轉動件61、一搖臂齒輪 機構71以及一取紙滾輪（未圖示）。如第2圖所示，前述殼 體Η中央設有一置紙槽41用以放置一紙堆S或其他可記 錄媒體，透過取紙滚輪(例如第1圖所示之取紙滾輪19)可 帶動紙堆S最上層之一紙張S1朝饋紙方向Α前進（如箭頭 方向所示），以完成饋紙之動作。特別地是，於本實施例中 0535-A21232TWF(N2)；A04473；TKLiN 8 200812820 之擋止件51、轉動件61以及搖臂齒輪機構71皆樞設於殼 體Η上，且前述擋止件51可活動地改變角度用以阻擋或 導引紙張S1前進，以避免多重進紙的情況發生。 接著請參閱第3圖，前述擋止件51主要包括一枢軸 51a、一擋止部51b，其中樞軸51a與殼體Η樞接，且擋止 部51b下方設有一凸塊51c。再請參閱第4圖，前述轉動 件61主要包括一凸輪61a以及一缺齒齒輪61b，其中缺齒 齒輪61b與凸輪61a固接，並且可一同繞轉動件61之中心 φ 轴C旋轉。特別地是，前述擋止件51之凸塊51c則係以可 滑動之方式抵接凸輪61 a。於一較佳實施例中，前述缺齒 齒輪61b與凸輪61a為一體成形，且前述凸塊51c例如為 一彈性構件。 如第4圖中所示之搖臂齒輪機構71主要係包括一可活 動之搖臂72、一主動齒輪73、——第一齒輪列74以及一第 二齒輪列75，上述主動齒輪73與第一、第二齒輪列74、 75皆設置於搖臂72上，其中第一、第二齒輪列74、75係 _ 分別位於主動齒輪73之相反侧並且與主動齒輪73喷合。 於本實施例中，前述第一齒輪列74僅具有一第一齒輪 741，第二齒輪列75則具有兩個第二齒輪751 ;然而，前 述第一、第二齒輪列74、75亦可視不同設計需求而分別具 有奇數個（例如一個、三個或五個）第一齒輪741以及偶數 個（例如二個、四個或六個）第二齒輪751。 當本發明之饋紙機構呈現如4圖所示之狀態時，前述 擋止部51b與紙堆S之間具有一第一角度α，此時透過擋 0535-Α21232TWF(N2)；A04473；TKLIN 9 200812820 止部51b可有效地防止置紙匣41内之紙堆S沿饋紙方向A 滑落，進而可避免多重進紙的情況發生。當欲進行饋紙動 作時，前述搖臂齒輪機構71首先係移動至一第一位置（如 第4圖所示），此時位在搖臂齒輪機構71末端之第一齒輪 741與轉動件61上之缺齒齒輪61b嗜合，並且透過主動齒 輪73係沿順時針方向旋轉以帶動凸輪61朝一第一方向 A1(順時針方向）旋轉。特別地是，在凸輪61轉動的過程中 可藉由其輪廓變化而調整檔止件51之姿態，進而使得擋止 φ 件51由第4圖所示之第一角度α變化至一第二角度冷（如 第5圖所示），其中第二角度/3係大於第一角度α。 接著請參閱第5圖，當擋止件51相對於紙堆S旋轉至 第二角度/3時，由於第一齒輪741係運動至缺齒齒輪61b 之缺齒部61b’而與轉動件61脫離，此時擋止部51則不 再運動，並且擋止部51b與紙堆S之間係維持於前述第二 角度/?，以利取紙滾輪對紙張紙堆S最上層之紙張S1進行 單張饋紙之動作。 • 接著，在完成饋紙程序之後，前述主動齒輪73係沿逆 時針方向反轉，此時整個搖臂齒輪機構71係隨著主動齒輪 73沿逆時針方向轉動至一第二位置（如第6圖所示）.，進而 使得第二齒輪列75末端之第二齒輪751與轉動件61上之 缺齒齒輪61b 13齒合。於本實施例中，由於第二齒輪列75 係具有偶數個第二齒輪751，因此當主動齒輪73持續沿逆 時針方向旋轉時仍可透過第二齒輪列75帶動凸輪61繼續 地沿第一方向A1(順時針方向）旋轉，直到第二齒輪751運 0535-A21232TWF(N2)；A04473；TKLIN 10 200812820 動至缺齒齒輪61b之缺齒部61b’而脫離轉動件61為止（如 第7圖所示）。 於第7圖中，前述擂止部51與紙堆S之夾角係回復至 如第4圖所示之第一角度α，此時檔止部51可有效地防止 置紙匣41内之紙堆S沿前述饋紙方向Α滑落◦然而，當 欲再次進行饋紙動作時，則可使主動齒輪73沿順時針方向 旋轉，此時搖臂齒輪機構71由於受到主動齒輪73帶動而 由第二位置（如第7圖所示之狀態）沿順時針方向旋轉至第 ⑩ 一位置（如第4圖所示之狀態），進而使得第一齒輪741與 轉動件61上之缺齒齒輪61b嗜合。 綜上所述，本發明藉由在轉動件61上設置缺齒齒輪 61b以及凸輪61a，同時在主動齒輪73兩侧分別設置奇數 個第一齒輪741以及偶數個第二齒輪741，其中當搖臂齒 輪機構71位於第一位置且主動齒輪73沿順時針方向旋轉 時(如第4圖所示），缺齒齒輪61b與凸輪a可沿第一方向（順 時針方向）旋轉，進而可帶動擋止部51b旋轉並使得擋紙部 _ 51b與紙堆S之間形成第一角度α。相反地，當搖臂齒輪 機構71位於第二位置且主動齒輪73逆時針旋轉時（如第6 圖所示），缺齒齒輪61b與凸輪a可沿第一方向（順時針方 向）旋轉，進而可帶動擋止部51b旋轉旋轉並使得擋紙部 51b與紙堆S之間形成第二角度/3。特別地是，當搖臂齒 輪機構71運動至前述缺齒齒輪61b之缺齒部61b’時可自 動地脫離轉動件61，進而使得擋止部51b與紙堆S之間可 維持於前述第一角度α或者第二角度/3，如此一來可藉由 0535-A21232TWF(N2)；A04473；TKL!N 11 200812820 控制檔止部51b之姿態以阻擋或導引紙堆S最上層之紙張 S1前進，同時可避免多重進紙的情況發生。Paper returning; 14, a rotating shaft 16, a pickup arm 18, and - setting = pickup roller 19 are composed. As shown in the figure, the two ends of the above-mentioned factory are fixed to both sides of the paper feed slot 12, and the paper take-up arm 18 is rotated around the shaft. The outer paper separator 14 is fixed to the bottom of the paper feed slot 12. The paper arm 18^Γ § ' When the thickness of the paper in the paper feed slot 12 is changed, the aforementioned rotation shaft Μ is rotated, so that the paper take-up roller 19 can continuously push the paper roller to advance. In particular, when the lower edge of the resisting (four) ^ sheet is subjected to the lack of buicking of the paper machine 14, the sheet feeding can be achieved. , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The phenomenon. SUMMARY OF THE INVENTION The present invention provides a paper feeding mechanism suitable for a transaction machine, which mainly comprises a casing, a stopper, a rocker gear mechanism and a rotating member. The housing has a paper slot for receiving at least a recordable medium. Upper stop 0535-A21232TWF(N2); A04473; TKLIN 6 200812820 The stop member is pivotally mounted on the housing, wherein the stop member moves between a first angle and a second angle relative to the recordable medium. The rocker gear mechanism is movably pivoted to the housing, and has a driving gear, a first gear train and a second gear train, wherein the first and second gear trains are respectively located on opposite sides of the driving gear and mesh with the driving gear . The rotating member is pivotally mounted on the housing and has a cam and a missing tooth gear. The missing gear is fixed to the cam and the cam is in contact with the stopping member. In particular, when the rocker gear mechanism is in a first position, the first gear train meshes with the spur gear to drive the cam to rotate in a first direction, thereby driving the stopper to rotate to the first angle; When the arm gear mechanism is in a second position, the second gear train meshes with the missing gear to drive the cam to rotate in the first direction, thereby driving the stopper to rotate to the second angle. In a preferred embodiment, the missing tooth gear has a missing tooth portion. When the rocker gear mechanism is in the first position and the first gear train moves to the missing tooth portion, the rocker gear mechanism is disengaged from the rotating member, so that the gear is blocked. The stop is maintained at the first angle. • In a preferred embodiment, when the rocker gear mechanism is in the second position and the second gear train is moved to the missing tooth portion, the rocker gear mechanism is disengaged from the rotating member such that the stop member is maintained at the second angle. In a preferred embodiment, the support member has a pivot and a broadcast portion, wherein the pivot pivots the housing and the stop portion is in contact with the cam. In a preferred embodiment, the stopper has a projection, and the projection is in contact with the cam. In a preferred embodiment, the bump is an elastic member. In a preferred embodiment, the paper feeding mechanism further includes a paper take-up roller, and the paper take-up roller is connected to the casing. When the damper is located at the second angle, The pickup roller drives the aforementioned recordable medium toward a sheet feeding direction. In a preferred embodiment, the stopper blocks the recordable medium from moving toward the paper feed direction when the stopper is rotated to the first angle. In a preferred embodiment, the second angle is greater than the first angle. In a preferred embodiment, the first gear train has an odd number of first gears and the second gear train has an even number of second gears. Φ In a preferred embodiment, the rocker gear mechanism further includes a rocker arm, and the driving gear and the first and second gear rows are disposed on the rocker arm. In a preferred embodiment, the rocker arm gear mechanism is switched between the first and second positions by the driving gear. In a preferred embodiment, the spur gear is integrally formed with the cam system. [Embodiment] Referring to Fig. 2, there is shown a schematic view of the paper feeding mechanism of the present invention. The paper feeding mechanism may be disposed in a printer or a printing device, and mainly includes a casing Η, a stopper 51, a rotating member 61, a rocker gear mechanism 71, and a pickup roller (not shown). ). As shown in FIG. 2, a paper slot 41 is disposed in the center of the casing 用以 for placing a paper stack S or other recordable medium, and can be driven by a paper take-up roller (for example, the paper take-up roller 19 shown in FIG. 1). One of the uppermost layers of the paper stack S is advanced toward the paper feed direction (as indicated by the direction of the arrow) to complete the paper feed operation. In particular, in the present embodiment, the stop member 51, the rotating member 61, and the rocker gear mechanism 71 of the 0535-A21232TWF (N2); A04473; TKLiN 8 200812820 are pivotally mounted on the casing, and the stoppers are 51 is operatively changing the angle to block or direct the advancement of the sheet S1 to avoid multiple feeds. Referring to Fig. 3, the stopper 51 mainly includes a pivot 51a and a stopper 51b. The pivot 51a is pivotally connected to the housing ,, and a protrusion 51c is disposed under the stopper 51b. Referring to Fig. 4, the aforementioned rotating member 61 mainly includes a cam 61a and a missing tooth gear 61b, wherein the missing tooth gear 61b is fixed to the cam 61a and is rotatable together around the center φ axis C of the rotating member 61. Specifically, the projection 51c of the stopper 51 abuts against the cam 61a in a slidable manner. In a preferred embodiment, the aforementioned spur gear 61b is integrally formed with the cam 61a, and the aforementioned projection 51c is, for example, an elastic member. The rocker gear mechanism 71 as shown in FIG. 4 mainly includes a movable rocker arm 72, a drive gear 73, a first gear train 74 and a second gear train 75, and the drive gear 73 and the 1. The second gear trains 74, 75 are all disposed on the rocker arm 72, wherein the first and second gear trains 74, 75 are respectively located on opposite sides of the driving gear 73 and are sprayed with the driving gear 73. In this embodiment, the first gear train 74 has only one first gear 741, and the second gear train 75 has two second gears 751; however, the first and second gear trains 74, 75 may also be different. The design requires an odd number (eg, one, three, or five) of first gears 741 and an even number (eg, two, four, or six) of second gears 751, respectively. When the paper feeding mechanism of the present invention assumes a state as shown in FIG. 4, the stopper portion 51b and the paper stack S have a first angle α, and at this time, the transmission member 0535-Α21232TWF(N2); A04473; TKLIN 9 200812820 The stopper 51b can effectively prevent the paper stack S in the paper cassette 41 from sliding down in the paper feed direction A, thereby preventing the occurrence of multiple paper feed. When the paper feeding operation is to be performed, the rocker arm gear mechanism 71 is first moved to a first position (as shown in FIG. 4), and the first gear 741 and the rotating member 61 are located at the end of the rocker gear mechanism 71. The upper missing tooth gear 61b is incompetent, and is rotated in the clockwise direction by the driving gear 73 to drive the cam 61 to rotate in a first direction A1 (clockwise direction). In particular, the posture of the stopper 51 can be adjusted by the change of the contour during the rotation of the cam 61, so that the blocking member 51 is changed from the first angle α shown in FIG. 4 to a second angle. Cold (as shown in Figure 5), wherein the second angle / 3 is greater than the first angle a. Next, referring to FIG. 5, when the stopper 51 is rotated to the second angle /3 with respect to the stack S, the first gear 741 is moved to the missing tooth portion 61b' of the missing tooth gear 61b to be disengaged from the rotating member 61. At this time, the stopper portion 51 is no longer moved, and the stopper portion 51b and the paper stack S are maintained at the aforementioned second angle /?, so that the paper take-up roller can perform the single sheet S1 of the uppermost layer of the paper sheet stack S. The action of sheet feeding paper. • Then, after the paper feeding process is completed, the driving gear 73 is reversed in the counterclockwise direction, and the entire rocker gear mechanism 71 is rotated in the counterclockwise direction to the second position along with the driving gear 73 (eg, the sixth position). The figure shows that the second gear 751 at the end of the second gear train 75 is meshed with the missing gear 61b 13 on the rotating member 61. In this embodiment, since the second gear train 75 has an even number of second gears 751, when the driving gear 73 continues to rotate in the counterclockwise direction, the second gear train 75 can still drive the cam 61 to continue in the first direction. A1 (clockwise direction) rotation until the second gear 751 carries 0535-A21232TWF (N2); A04473; TKLIN 10 200812820 moves to the missing tooth portion 61b' of the missing tooth gear 61b and is separated from the rotating member 61 (as shown in Fig. 7) Show). In Fig. 7, the angle between the stop portion 51 and the stack S is restored to the first angle α as shown in Fig. 4, and the stop portion 51 can effectively prevent the stack of paper in the stack 41. S slides down along the aforementioned paper feed direction. However, when the paper feed operation is to be performed again, the drive gear 73 can be rotated in the clockwise direction. At this time, the rocker gear mechanism 71 is driven by the drive gear 73 to be moved by the second position. (the state shown in Fig. 7) is rotated clockwise to the 10th position (as shown in Fig. 4), so that the first gear 741 is in contact with the missing tooth gear 61b on the rotating member 61. In summary, the present invention provides an odd-numbered first gear 741 and an even-numbered second gear 741 on both sides of the driving gear 73 by providing the missing gear 61b and the cam 61a on the rotating member 61, wherein the rocker arm When the gear mechanism 71 is in the first position and the driving gear 73 rotates in the clockwise direction (as shown in FIG. 4), the missing tooth gear 61b and the cam a can rotate in the first direction (clockwise direction), thereby driving the stop. The portion 51b is rotated to form a first angle α between the paper stop portion 51b and the paper stack S. Conversely, when the rocker gear mechanism 71 is in the second position and the driving gear 73 rotates counterclockwise (as shown in FIG. 6), the missing tooth gear 61b and the cam a are rotatable in the first direction (clockwise direction), thereby The stopper portion 51b can be rotated to rotate and a second angle /3 is formed between the paper stopper portion 51b and the paper stack S. In particular, when the rocker gear mechanism 71 moves to the missing tooth portion 61b' of the aforementioned toothless gear 61b, the rotor 61 can be automatically disengaged, so that the first portion of the stopper portion 51b and the stack S can be maintained in the first The angle α or the second angle /3, so that the posture of the stop portion 51b can be controlled by the 0535-A21232TWF (N2); A04473; TKL! N 11 200812820 to block or guide the paper S1 of the uppermost layer of the stack S At the same time, it can avoid the situation of multiple feeds.
0535-A21232TWF(N2)；A04473；TKLlN 12 200812820 【圖式簡單說明】 第1圖係表示習知饋紙機構之示意圖； 第2圖係表示本發明之饋紙機構示意圖； 第3圖係表示本發明中擋止件之示意圖； 第4圖係表示第一齒輪與缺齒齒輪嚙合之示意圖； 第5圖係表示第一齒輪運動至缺齒部而脫離轉動件之 不意圖， 第6圖係表示第二齒輪與缺齒齒輪嚙合之示意圖；以 • 及 第7圖係表示第二齒輪運動至缺齒部而脫離轉動件之 示意圖。 【主要元件符號說明】 12〜置紙槽 14〜分紙器 16〜轉軸 _ 18〜取紙臂 19〜取紙滾輪 41〜置紙槽 51〜擋止件 51 a〜樞軸 t 5 lb〜擋止部 51c〜凸塊 61〜轉動件 0535-A21232TWF(N2)；A04473；TKLIN 13 200812820 61 a〜凸輪 6 lb〜缺齒齒輪 61b’〜缺齒部 71〜搖臂齒輪機構 72〜搖臂 73〜主動齒輪 74〜第一齒幸备歹}] 741〜第一齒輪 75〜第二齒輪列 751〜第二齒輪 A〜饋紙方向 A1〜第一方向 C〜中心軸 Η〜殼體 S〜紙堆 S1〜紙張 α〜第一角度 /3〜第二角度 0535-A21232TWF(N2)；A04473；TKLIN 140535-A21232TWF(N2); A04473; TKLlN 12 200812820 [Simplified description of the drawings] Fig. 1 is a schematic view showing a conventional paper feeding mechanism; Fig. 2 is a schematic view showing a paper feeding mechanism of the present invention; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 4 is a schematic view showing the meshing of the first gear and the spur gear; FIG. 5 is a schematic view showing the movement of the first gear to the edentulous portion and the detachment of the rotating member, and FIG. 6 is a view showing A schematic diagram of the engagement of the second gear with the edentulous gear; and Fig. 7 is a schematic view showing the movement of the second gear to the missing tooth portion to disengage the rotating member. [Description of main component symbols] 12 to paper feed slot 14 to paper separator 16 to rotary shaft _ 18 to paper take-up arm 19 to pickup roller 41 to paper feed slot 51 to stopper 51 a to pivot t 5 lb to stop Portion 51c to bump 61 to rotating member 0535-A21232TWF(N2); A04473; TKLIN 13 200812820 61 a~cam 6 lb~ missing tooth gear 61b'~ missing tooth portion 71~ rocker gear mechanism 72~ rocker arm 73~active Gear 74 to first tooth ready 歹}] 741 to first gear 75 to second gear train 751 to second gear A to paper feed direction A1 to first direction C to center axis Η to case S to paper stack S1 ~ paper α ~ first angle / 3 ~ second angle 0535-A21232TWF (N2); A04473; TKLIN 14