200829439 九、發明說明： 【發明所屬之技術領域】 本發明係有關一種自動進紙機構，尤指一種於取紙軸一端具 有可撓性元件之自動進紙機構。 【先前技術】200829439 IX. Description of the Invention: [Technical Field] The present invention relates to an automatic paper feeding mechanism, and more particularly to an automatic paper feeding mechanism having a flexible member at one end of a paper take-up shaft. [Prior Art]
叙的衫像农置’例如影印機、傳真機、印表機、掃描器或 多功能事務機通常具有—自她紙機構(Auto sheet feeder，ASF)以 ^己錄紙張舰進影健置的那卩本齡減印。由於影像裝置 製造成摘考量，驅動自動軌機構的馬達動力_也用來做為 、、氏張傳送機構的動力’透過影絲置内絲組喊置，將動力傳 i u要的仃域構巾。㈣知的自動魏裝置係透過影像裝置 之驅動馬娜狀錄轉動，錄_帶動棘輪轉動 ，而棘輪 則與取紙軸連動而帶動取紙軸進行單向作動。 n 錢構只允許單向作動之執方向，且當影像裝置不 :^仃程時’進紙機構（從動端）必__動（亦即不 ·棘細及錄組㈣），因此f知的自騎紙機構通常 端&置有特殊造型之0型軌及離合機構。請參考 所福^ ό弟2圖’第1圖及第2圖為美國第6,899,326號專利案 11〇 〇 i4〇 ^ 12〇 f42 1 144係透過與棘輪Π0卡合的方式，使棘輪⑽可以 6 200829439 1 轉動’進而帶動取紙軸110沿復方向轉動(如第1 ^=2雜裝置不進行執行辦，由裝如一離合器 ，使0魏⑽哺咖46為轴心沿 士人'動（如第2圖所示）。此時進給爪144脫離棘輪120 輪:1吏棘輪m相對取紙軸110產生「空轉」，同時連接於取 合旦型環140間之—回復彈簧i5G被拉長而具有回復力。 田奶衣置再度進行進紙行程時，離合器停止對離合銷⑷的制The shirts of the narrations such as photocopying machines, fax machines, printers, scanners or multifunction machines usually have - from the paper sheet (Auto Sheet feeder, ASF) Then the age is reduced. Since the imaging device is manufactured in consideration, the motor power that drives the automatic rail mechanism is also used as the power of the transmission mechanism of the beam, and the sound is transmitted through the inner wire group. . (4) The known automatic Wei device rotates through the image device to drive the Mana record, and the record _ drives the ratchet to rotate, and the ratchet rotates with the paper take-up shaft to drive the paper take-up shaft to perform one-way operation. n The money structure only allows the one-way action direction, and when the image device does not: ^仃程, the paper feed mechanism (slave end) must be __ move (that is, not the spine and record group (four)), so f Known self-riding paper mechanism usually has a special shape 0 type rail and clutch mechanism. Please refer to the book "The 2nd picture and the 2nd picture of the 2nd and 2nd pictures of the US Patent No. 6,899,326. 11〇〇i4〇^12〇f42 1 144 series is made to engage the ratchet Π0 so that the ratchet (10) can be 6 200829439 1 Rotating 'and then driving the paper take-up shaft 110 to rotate in the opposite direction (such as the 1 ^ 2 miscellaneous device does not perform the operation, by loading a clutch, so that 0 Wei (10) feeding the coffee 46 as the axis along the scholar's movement (such as Fig. 2 shows. At this time, the feed claw 144 is disengaged from the ratchet wheel 120: 1) the ratchet wheel m is "idle" with respect to the paper take-up shaft 110, and is connected between the take-up type ring 140. The return spring i5G is elongated. With the resilience. When the field milk is placed on the paper feed stroke again, the clutch stops the system of the clutch pin (4).
動，_復彈簧150的回復力將〇型環14〇沿cw方向拉動，使 〇型％ 140之進給爪144再度與棘輪12〇卡合，使棘輪⑼可帶 動取紙軸110轉動。 〜然而習知進紙機構中，由於需要設置〇型環14〇以及回復彈 K 150以凡成上述單向作動以及脫離作動的動作，且〇型環 以及回復彈簧15G的組魏程雜複雜。例如，需先將回復彈簧 150 -端HI定在取_ 11G的卡勾上，以及將〇型環⑽之轉動 軸146套設在取紙軸n〇之轉動樞紐上，接著使用鑷子等工具爽 住回復彈簀15G之另-端並拉伸回復彈簧15G至〇型環14〇上之 卡勾處鉤上，接著才能在-邊維持〇型環⑽以及回復彈菁15〇 的位置同N·，-邊將棘輪12G組裝上去。除了組裝過程複雜外， 組裝後之機構零件亦容紐開，造成製造過程之不便，且〇型環 140以及回復彈簧150亦增加製造之成本。 200829439 【發明内容】 機構，1::::種於取紙軸一端具有可撓性元件之自動進紙 可雜-、Γ棘輪’具有複數個齒，以及—取紙軸，具有一 雜U件。該可撓性元件具有1定部，延伸_取紙轴之_ ::二’以可相對—轴靠近或遠離的方式延伸於該固 使 二二:至少具有—進給爪，可與該棘輪之齒卡合 該棘輪帶動該取紙軸轉動。 本發明另提供取纟_—邮有可驗 機構，其包含有-棘輪，具有複數個齒，以及一取紙轴，具= 可撓性70件，以可減—軸#近或遠離的方歧伸於該該取紙轴 之一端，該可撓性元件上至少具有—進給爪，可與該棘輪之齒卡 合，使該棘輪帶動該取紙軸轉動。 【實施方式】 請參考第3圖，第3圖為本發明自動進紙機構(Aut〇切細扭 燦）i之示意圖，自動進紙機構丨可朗於影像裝置例如影印機、 傳真機、印表機、掃描器或多功能事務機上。自動進紙機構包含 -取紙軸(picksha_、-棘輪㈣chet) 2〇以及一離合器(咖爾 30。於取紙軸10之-第-端具有一可繞性元件如，於一第二端則 為一取紙滾輪11，該取紙滾輪11上包覆有高摩擦係數之橡膠，當 取紙軸U)被棘輪20帶動進行單向轉動時，可帶動紙張前進，以 達_紙進_目的。本發明之自動進紙機構1之動作原理如下·· 8 200829439 驅動馬達帶動之齒輪組（圖上未顯示）轉動時，齒輪 2::二齒26連動而帶動棘輪20沿CW方向轉動，棘輪 w 於第5圖）則與取紙軸1G連動而帶動取紙軸 /〇 肖進仃單向作動，躺帶動紙張前進。 請參考第4圖以及第5圖。第4圖為 擊於取^Γ及—浮料42，財固定部41伽定延伸 t 之弟—端，而浮_ 42咖定部4〗連接，且由於 /、係以懸空於取紙軸10第一端的方式延伸於 浮 部42具有可撓性且谢陶41以小嶋近或遠離= 軸的方式義。於本發财，浮動部42係可相齡_〇之轴 減或遠離的方式擺動1由於棘輪Μ係以可轉動的方 式套设在取紙軸U)之軸心上，因此浮動部42實質上係以相對棘 輪20之圓心24靠近或遠離的方式擺動。於製造過程中，可挽性 讀4〇與取紙轴1〇係以一體成型的方式製造，且可撓性元件4〇 (加上取紙軸H)之第-端或取紙軸1G本身）係賴耐動態 耐磨耗、高強度、高勤性之材料，例如熱塑性聚醋彈性體(τ 或祕等材料製造，使可撓性元件4〇之浮動部42可反 幅度的彈性擺動。 42 土 ^圖中’於摘部42上具有1給爪43，延伸於浮動部 罪近棘輪20 _之-側。進給爪&係與棘輪％之内齒η卡 9 200829439 軸方向轉動時可帶動可撓性元件40以及取紙 -二=:爪43與棘輪2°連動之準確性以及棘輪 V之穩疋性’本發明更可於浮動部42上 爪43，使複數個進給爪43 ^ 43 ^ 2〇 # # 22 ^ 〇 之齒形斜面221抵住並推動^『卡5的方式’則是由内齒22 取_〇 _。於實作±姆面糾，以帶動 43之爪形斜面431她十叙1之酉形斜面221以及進給爪 24 ^ ^V43 2。於傳動動力源以及傳動機構之成本考量，棘輪 當影像裝置之狐咖、W、織取錄1〇分離， 送紙行尸赤 I 進仃，、他動作（如紙張於影像裝置内之 棘幹20 ^、氏她）而持續帶動齒輪組（以及棘輪20)轉動時， 上另且 ϋ 30，而可撓性元件40之浮動部42 、伸於汙動部42之一端。請參考第3圖以 撕賴刪，敝组的設計 以w之17方向推動制動銷44，使浮動部42 固定部41之M洋動部42與固定部41連接處為支點相對 , 田又/口 CCW方向擺動，此擺動促使浮動部42以及其 22之作=Μ ^離棘輪I""及其内齒22，使進給爪43脫離内齒 ’此時棘輪20相對於取紙軸1()係處於「空轉」的狀態， 200829439 =軸，會轉_造抓誤。#影健置再細亍進 糾，齒輪組帶動離合器30轉動不再推動梅銷Μ，使可 件4〇彈回原來位置，使進給爪43再度扣合内齒22，以進The restoring force of the movable spring 150 pulls the 〇-shaped ring 14 〇 in the cw direction, so that the feed claw 144 of the 〇 type % 140 is again engaged with the ratchet 12 ,, so that the ratchet (9) can drive the take-up shaft 110 to rotate. ~ However, in the conventional paper feeding mechanism, since the 〇-shaped ring 14 〇 and the retracting elastic K 150 are required to perform the above-described one-way operation and the detachment action, the 〇-shaped ring and the return spring 15G are complicated. For example, firstly, the return spring 150-end HI is set on the hook of the _11G, and the rotating shaft 146 of the 〇-shaped ring (10) is set on the rotating hinge of the take-up shaft n〇, and then the tool such as tweezers is used. Resist the other end of the magazine 15G and stretch the return spring 15G to the hook on the hook of the 〇-shaped ring 14〇, and then maintain the 〇-ring (10) and the position of the 弹 〇 15〇 with N· , - The ratchet 12G is assembled. In addition to the complicated assembly process, the assembled mechanical parts are also open, which causes inconvenience in the manufacturing process, and the 〇-shaped ring 140 and the return spring 150 also increase the manufacturing cost. 200829439 [Invention] The mechanism, 1:::: an automatic paper feeding type having a flexible element at one end of the paper take-up shaft, a ratchet ratchet having a plurality of teeth, and a paper take-up shaft having a miscellaneous U piece . The flexible element has a fixed portion, and the extension _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The tooth is engaged with the ratchet to drive the paper take-up shaft to rotate. The invention further provides a 纟_-mail-proven mechanism, which comprises a ratchet, a plurality of teeth, and a paper take-up shaft, with a flexible 70 piece, which can reduce the axis # near or far away. Distracting at one end of the paper take-up shaft, the flexible element has at least a feed claw that can be engaged with the teeth of the ratchet wheel to cause the ratchet wheel to rotate the paper take-up shaft. [Embodiment] Please refer to FIG. 3, which is a schematic diagram of the automatic paper feeding mechanism (Aut, Twisted and Twisted) i, and the automatic paper feeding mechanism can be used for image devices such as photocopiers, fax machines, and printing. On a watch, scanner or MFP. The automatic paper feeding mechanism includes a pick-up shaft (picksha_, - ratchet (four) chet) 2 〇 and a clutch (Cal 30. There is a wrapable element at the - end of the take-up shaft 10, for example, at a second end The paper take-up roller 11 is covered with a rubber with a high coefficient of friction. When the paper take-up shaft U) is driven by the ratchet 20 to perform one-way rotation, the paper can be advanced to achieve the purpose of _ paper feed. . The operation principle of the automatic paper feeding mechanism 1 of the present invention is as follows. 8 200829439 When the gear set (not shown) driven by the driving motor rotates, the gear 2:: the two teeth 26 are interlocked to drive the ratchet 20 to rotate in the CW direction, the ratchet w In Fig. 5), the paper take-up shaft 1G is driven in conjunction with the paper take-up shaft 1G to move the paper forward. Please refer to Figure 4 and Figure 5. Fig. 4 is a view of the hitting of the pick-up and the float material 42, the financial fixed portion 41 is erected to extend the younger end of the t, and the floating _42 coffee portion 4 is connected, and because the / is suspended from the take-up axis The manner of the first end of the 10 is extended by the fact that the floating portion 42 has flexibility and the Xie Tao 41 is small or close to the axis. In the present invention, the floating portion 42 is swayable in such a manner that the shaft of the aging shaft is reduced or moved away. Since the ratchet raft is rotatably disposed on the axis of the paper take-up shaft U), the floating portion 42 is substantially The upper portion swings in such a manner that the center 24 of the ratchet wheel 20 approaches or moves away. In the manufacturing process, the pullable read 4〇 and the take-up shaft 1 are integrally formed, and the first end of the flexible member 4 (plus the take-up shaft H) or the take-up shaft 1G itself It is a material that is resistant to dynamic wear resistance, high strength, and high workability, such as a thermoplastic polyurethane elastomer (such as τ or secret material), so that the floating portion 42 of the flexible member 4 can be elastically swinged in opposite directions. 42 In the figure, 'there is a 1 claw on the upper part 42 and extends to the side of the floating part near the ratchet 20 _. The feed claw & the system and the ratchet % internal tooth η card 9 200829439 when the axis rotates The flexible element 40 can be driven and the pick-up-two=: the accuracy of the linkage of the claw 43 with the ratchet 2° and the stability of the ratchet V. The present invention is more applicable to the upper claw 4 of the floating portion 42 to make a plurality of feed claws. 43 ^ 43 ^ 2〇# # 22 ^ The toothed bevel 221 of the 抵 抵 并 推动 推动 『 『 『 『 『 『 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 卡 。 。 。 。 。 。 。 。 。 。 。 The claw-shaped bevel 431 has a slanting slanting surface 221 and a feeding claw 24 ^ ^ V43 2 . The cost of the transmission power source and the transmission mechanism, the ratchet is the fox coffee of the image device, W, weaving and recording 1 〇 separation, paper feeding corpse I into the 仃,, his movements (such as the paper in the imaging device, the spine 20 ^, her) and continue to drive the gear set (and ratchet 20) to rotate, Further, the floating portion 42 of the flexible member 40 extends to one end of the dirty portion 42. Please refer to FIG. 3 for tearing off, and the design of the cymbal group pushes the brake pin 44 in the direction of w17. The connection between the M-foreign portion 42 of the fixed portion 41 of the floating portion 42 and the fixed portion 41 is opposite to the fulcrum, and the field is swung in the CCW direction. This swing causes the floating portion 42 and its 22 to be Μ ^ away from the ratchet I" And its internal teeth 22, the feed claws 43 are disengaged from the internal teeth'. At this time, the ratchet wheel 20 is in an "idle" state with respect to the paper take-up shaft 1 (), 200829439 = axis, which will turn to make a mistake. #影健After the gear set, the clutch 30 drives the clutch 30 to rotate and no longer pushes the pin Μ, so that the shackle 4 slams back to the original position, so that the feeding claw 43 refastens the inner tooth 22 to advance
於本發明之實施例中，可撓性元件4〇 (包含固定部4i 動部42)之曲線特徵的輪廓外型，以接近或幾近貼合的方式^棘 輪2〇之外緣方向延伸於取紙軸1〇之第一端，使浮動部似僅: 幅度的擺動即可脫離棘輪2〇的卡合。由於固定部41係固定延而伸 於取紙軸K)之-端，於本發明另—實施例中，亦可不需設置固定 部4卜可撓性元件4G直接延伸出取紙軸1()之第—端，1可相對 =紙軸K)軸心（或棘輪20之圓心24)靠近或遠離擺動以達到與 如述實施例相同之目的。 本發明利用於取紙軸之-端—體成型設置之—可撓性元件， 以可相對棘輪κ、接近或雜的方歧伸於取祕之—端。該 可撓性元件之浮動部上具有之進給爪與棘輪之_卡合，使棘輪 可帶動取紙軸單向作動。透過離合器推動可撓性元件上之制動銷 使粉爪脫離棘輪之内齒之作動，從賴一體成型之設計，簡化 先前技術的自驗纟峨射f 〇型_及回復料之複雜零件設 計以及解決先前技術組裝不易之問題。 以上所述僅為本發明之較佳實施例，凡依本發明申請專利範 200829439 明之涵蓋範圍。 園所做之均等變化與修飾，皆應屬本發 【圖式簡單說明】 第1圖及第2圖為習知自動進紙機構中， 輪連動之示意圖。 取紙軸上之〇 型環與棘 第3圖為本發明自動進紙機構之示意圖。In the embodiment of the present invention, the outline of the curved feature of the flexible member 4 (including the fixed portion 4i moving portion 42) is extended to the outer edge of the ratchet 2〇 in a close or nearly close manner. The first end of the paper take-up shaft 1〇 is made so that the floating portion seems to be only: the swing of the amplitude can be disengaged from the engagement of the ratchet 2〇. Since the fixing portion 41 is fixedly extended to the end of the paper take-up shaft K), in the other embodiment of the present invention, the fixing portion 4 may not be provided. The flexible member 4G directly extends out of the paper take-up shaft 1 () At the first end, 1 can be rotated relative to or away from the axis (or the center 24 of the ratchet 20) for the same purpose as the embodiment described. The invention utilizes the flexible element of the end-body forming of the paper take-up shaft, so as to extend to the end of the secret with respect to the ratchet κ, the proximity or the miscellaneous. The feeding portion of the floating portion of the flexible member is engaged with the ratchet, so that the ratchet can drive the paper take-up shaft to operate in one direction. Pushing the brake pin on the flexible element through the clutch to disengage the claw from the internal teeth of the ratchet, simplifying the design and solving the complex parts of the prior art self-inspection f type and recovery material The problem of prior art assembly is not easy. The above description is only the preferred embodiment of the present invention, and is covered by the scope of the patent application 200829439. The equal changes and modifications made by the park should belong to this issue. [Simple description of the drawings] Figures 1 and 2 are schematic diagrams of the wheel linkage in the conventional automatic paper feeding mechanism. The 〇-shaped ring and the spine on the paper take-up shaft Fig. 3 is a schematic view of the automatic paper feeding mechanism of the present invention.
第4圖為取紙軸第一端之可撓性元件之示意圖 第5圖為第4圖之剖面示意圖。 【主要元件符號說明】 1 自動進紙機構 11 取紙滾輪 22 内齒 26 外齒 4〇 可撓性元件 42 浮動部 44 制動銷 142 離合銷 15〇 回復彈簧 431 爪形斜面 10,110 取紙軸 20,120 棘輪 24 圓心 30 離合器 41 固定部 43,144 進給爪 140 〇型環 146 轉動軸 221 齒形斜面 F，CW，CCW 方向Figure 4 is a schematic view of the flexible member at the first end of the paper take-up shaft. Fig. 5 is a schematic cross-sectional view of Fig. 4. [Main component symbol description] 1 Automatic paper feed mechanism 11 Pickup roller 22 Internal teeth 26 External teeth 4 〇 Flexible element 42 Floating part 44 Brake pin 142 Release pin 15 〇 Return spring 431 Claw-shaped bevel 10, 110 Pick-up shaft 20, 120 Ratchet 24 Center 30 Clutch 41 Fixing part 43, 144 Feeding claw 140 〇-ring 146 Rotating shaft 221 Toothed bevel F, CW, CCW direction
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