1278307 玖、發明說明： 【發明所屬之技術領域】 本發明是有關於一種驅動裳置，特別是指一種利用手 動搖擺方式可產生連續性驅動力且具有穩定傳動效果之雙 鏈條單向軸承式驅動裝置。 又 【先前技術】 ‘軸設在椅架1後端的後輪2、二軸設在椅架丨前端的 前輪（圖未示）、以及一裝設在椅架i前方處的驅動裝置1〇, 同時參閱圖2所示，該驅動裝置1〇具有一連接在椅架丨下 方處的固定座11、一接設在固定座u前處的套筒12、一套 參閱圖1，習知有一種輪椅100機構，其包含有一椅架 10 15 設在套筒12内可活動轉向的前又桿13、一軸設在前叉桿 13下方處的驅動輪14、以及一以槓桿式樞接在前叉桿u 上端處的搖桿單元15，該驅動輪14包含有一輪體Μ〗、一 同軸套設在輪體141 一側邊處的轉盤142、以及一設置在轉 送142内邛與輪體141作套合的單向軸承（圖未示），該單向 軸衣控制4轉| 142只以單一方向對輪^ 141作驅轉，該 桿單元15具有—軸设在$又桿} 3上的搖桿⑸、一固接 在搖桿上端處的握把152、以及一樞接在搖桿i5i下端 =連桿153，該握把152可供乘坐者以手部握持搖動，該連 才干153下端與轉冑142 —侧相樞聯，藉此，乘坐者對該握 ,152擺動時，該連桿153可帶動轉μ 142擺轉一角度， U 142藉由單向軸承可對該輪冑ΐ4ι作驅轉，使驅動輪 W帶動整個輪椅1〇()向前移動。 20 1278307 上述驅動裝置ι〇確實可讓輪椅刚以手動方式驅動以 達到行進功能，然而其使用上會產生下列幾項缺失： (1) ·驅動方式不連績 一般手搖驅動裝置10通常只利用一組單向軸承對驅動 5 輪Η進行驅轉，因此該搖桿151只有朝後方擺動才會帶動 驅動輪14旋轉，而朝前方擺動則因為單向軸承空轉而不會 帶動驅動輪14,如此一來，習知驅動裝置1〇驅動力的傳遞 方式是間歇片斷的，輪椅100在行進當中，搖桿151的操 作無法讓驅動輪14維持轉動狀態，當遇到上坡路面時，該 10 輪椅1〇()便無法克服本身重量產生的下滑力而難以前進， 因此該驅動裝置10的驅動能力有極大的缺點。 (2) ·運轉動作不順暢 習知驅動裝置10是利用搖桿151帶動該連桿153後， 再對該驅動輪14進行驅轉，但是該搖桿151及連桿153都 15 屬於剛性桿件，各桿件的樞接點容易造成死點效應，因此 該驅動裝置1 〇在手動搖擺過程中經常發生卡滞現象，其驅 轉動作較不順暢。 【發明内容】 因此，本發明主要目的是提供一種以手動搖擺運動可 20 產生連續且穩定傳動效果之雙鏈條單向軸承式驅動裝置。 於疋’本發明提供一種雙鏈條單向軸承式驅動裝置， 其包含有一本體、一手搖單元、二傳動單元及一動力輸出 單元’該本體具有一主架、一穿設在主架上方處的主動軸 、以及一穿設在主架下方處的從動軸；該手搖單元具有二 1278307 ίο 15 固定接設在主動軸兩側端處的搖柄座、二下端接設在搖柄 ^上的連動桿、以及—橫向連接在二連動桿上端處的操二 桿，往復搖擺該操縱桿可令連動桿驅動該主動軸往復擺轉 ，第一傳動單元係設置在主架的一側邊處，其具有一軸嗖 j主動軸上的主動輪、一套設在主動輪内只接受主動軸= 一預定方向作驅轉的第一單向軸承，一連接設置在從動軸 上的從動輪、以及-連接繞設在主、從動輪之間作為傳動 的鏈條；第二傳動單元係設置在主架相對於第—傳動單元 的另一側邊處，其具有一軸設在主動軸上的主動輪、一套 設在主動輪内只接受主動軸以一相反於第一單向轴承驅轉 方向作驅轉的第二單向軸承、—連接設置在從動軸上的從 動輪、一軸設在主架側邊處與從動輪嚅接 :以及-連接繞設在主動輪及中間輪組之間作為 心…亥動力輪出單元係設置在從動轴的_側端處，可接受 從動軸驅轉而輸出動力。 …本發明之功效主要是利用二組裝設有單向軸承的傳動 早凡與手搖單元連動’藉由雙鏈條帶動方式傳輸動力，俾 以達到連續驅動及穩定順暢的傳動效果。 【實施方式】 有關本發明之前述及其他技術内容、特點盘功效，在 以下配合參考圖式之一較佳實施例的詳細說明中 楚的明白。 ^ 裝置在-較佳實施例中，其主要包含有—本體^、 蒼閱圖3、圖4及圖5，本發明雙鏈條單向軸承式驅動 _ 丨_ ^^5 ，_ · 1 ‘ 手指 20 1278307 单元30' —第一偉會7;- μ 弟得動早义4〇、一第二傳動單元50、一動力 輸出單元60及一離人置-. 及離。早疋7〇，接著，再將上述各構件的細 部構造及組合情形詳述於后。 5 10 15 力林體20具有一呈直立狀的主架21、一橫向穿設在主 术21上方處的主動軸L以及-橫向穿設在主架21下方 處的從動軸23,該主架21上方接近主動轴22位置處橫設 有-擔止桿24，對應從動軸23前方處橫設有一滑座Μ。 該手搖單το 3G具有二接設在主動軸22兩側端處的搖 柄座31、二螺設在主動轴22兩端可對搖柄座31作限位固 定的鎖固螺帽32、二下端接設在搖柄座31上的連動桿％ 、以及-橫向連接在二連動桿33上端處的操縱桿34。該搖 柄座31上方處具有一可供連動桿％穿入的桿孔3ιι，使連 動桿33在搖柄座31上可移動地調整其伸出長度，搖柄座 31後部再螺入一螺絲(圖未示)可螺抵連動桿％卩固定其位 置。二操縱桿34在末端處各具有一握把341，可供操作者 以雙手握持進行搖擺運動，該操縱桿34中間橫向連接在二 連動# 33上，可供操作者以單手握持進行搖擺運動❶該搖 柄座31上下端分別延伸出有一第一限位部312及一第二限 位部313 ’第-限位部312是呈水平方向設置，第二限位部 313是呈垂直方向設置，兩者大約相隔9〇度的角度範圍， 當連動桿33帶動該搖柄座31前後擺轉時，第一、第二限 位部312、313剛好會受到本體20擋止桿24的抵止，藉此 了限位正個手搖單元30擺動的幅度，如圖6、圖7所示。 再參閱圖4,第一傳動單元40係設置在主架21的一側 20 5 10 15 20 1278307 ^ 其具有一轴設在主動輪22卜6^7 + 4 主動於41 & 在動軸22上的主動輪41、-套設在 方部只接受主動軸22以—預定方向（例如順時鐘 白）違仃驅轉的第一單向軸承42、一 上的從動趴^ 連接叹置在從動軸23 傳動⑽、一連接繞設在主、從動輪41、43之間作為 專動功此的鏈條44、以及一設置在主架 肩作滾抵.的惰鈐 上T對4鏈條 輪元俾， 5。该主動輪41及從動輪43皆為鏈齒 中 猎由该鍵條44繞接可入兩古·、去_〇·、* 且4《目士 ％接了以者核鏈接傳動，該惰 T 45具有—固設在主架21上的支架州、以及-軸設在 支架州上與鏈條44㈣接的惰絲452 齒 …的位置可適當地調整該鏈條44的張緊力大小。 第二傳動單元5G係設置在主架2ι相對於第—傳動單 凡40的另-側邊處，其具有一轴設在主㈣η上的 輪51、-套設在主動輪51内只接受主動抽^以—相反於 第-單向軸承42輯方向（例如逆時鐘方向）作驅轉的第二 單向軸承52、一連接設置在從動軸23上的從動輪& 一 轴設在主架21側邊處與從動輪53屬接傳動的中=輪^4 、-連接繞設在主動輪51 &中間輪組54之間作為;專動的 键條55、以及-設置在主架21上可對該鏈條Μ抵的惰 輪組56。该主動輪51為鏈齒輪元件，該從動輪μ | 元件，而中間触54具有—小鏈輪541及_與小鏈輪: 同軸設置的大齒輪542，小鏈輪541藉由該鏈條μ與主 輪51達成鏈接傳動，使主動輪51與中間輪組& a 一主動 向轉動，而大齒輪542與從動輪53彼此作嚅合傳動 動輪53與主動輪51是呈反方向轉動，該惰輪°組’56與^ 9 5 10 15 20 1278307 惰輪組45相同，其 561對該鏈條55作滾抵。…、-可做位移調整的惰齒輪 可接出單元6〇係設置在從動麵23的-側端處， 動力輸出對外輸出動力，在本實施例中，該 並橫穿入從動齒盤61、—固接在齒盤61中心處 外内部的中心轴62、以及-設在齒盤6! 接另板Ο °該齒盤Μ外部具有多數鏈齒611可供鏈 接^鏈細未示）或其他輸出元件’以對外傳輸其驅轉力 ’ I在接近中心處等分設有多數個卡合凸部612。 早兀7〇包含有-設置在主架21上的手控構件 &置在《動軸23 -端可與齒盤61作離合接觸的卡 合構件72、以及—設置在從動軸23另一端可作橫向位移的 復歸構件73。同時參閱圖8，該手控元件71具有一固定裝 认在主木21上的把手座711、一軸設在把手座上的把 手m、以及-與把手712連接作動的控制線713，該把手 座711上凹設有-可供把手712掣入定位用的定位槽7⑴ ，該控制、線713係-般鋼索，其一端與把手712相連接， 另一端接設在復歸構件73上。再參閱圖5，該卡合構件72 係呈圓盤狀，其表周面上等分間隔洞設有多數個卡合凹部 72卜設置多數卡合凹部721的用意是為了在最短的時間内 ，讓卡合凹部721與齒盤61上的卡合凸部612完成卡合， 使從動軸23與该齒盤61形成一體連動。該復歸構件73具 有一活動架731及一彈性件732，該活動架731略呈l形狀 ，其具有一滑套伸入滑座25内部的轴桿73丨丨以及一軸套地 10 1278307 鎖固接在中心軸62末端處的延伸桿7312，該彈性件732套 設在中心轴62上可對延伸桿7312作彈推，藉此提供中心 軸62及w.盤61具有朝向卡合構件72方向移動的彈復力。 5 10 15 20 以上即為本發明雙鏈條單向軸承式驅動裝置各構件形 狀及組合空間型態的概述；接著，再將本發明的運轉動作 以及預期所能達成之功效陳述如后： 麥閱圖9’當操作者操控該手搖單元3〇向前擺動時， 該連動桿33會帶動主動軸22以順時鐘方向作—旋轉，此 一旋轉方向會令第-單向軸承42被帶動驅轉，而第二單向 軸承52則呈空轉狀，因此第一傳動單元4〇的主動輪^會 被帶動，藉由第-傳動單元4〇的鏈條44驅轉其從動輪Μ ’如此可帶動該從_ 23以順時針方 再帶動該齒盤6丨產生—驅動力。 勤轴23 :閱圖1〇 ’當操作者操控該手搖單元3〇向後， 该連動桿33會帶動主會7細”、、、， 以逆時鐘方向作一旋轉，此 一方疋轉方向會令第二單向軸 產 祆52被▼動驅轉，而第一單 軸承42則呈空轉狀， 早门 被帶動，藉由第二傳動單元早兀50的主動輪51會 α ^ _ 的鏈條55驅轉中間輪組54 从延時針方向轉動，中間輪組 時針方、 再帶動其從動輪53以順 十方向方疋轉，從動輪53同 盤61再產♦一斯私+ 』樣了 f動该從動軸23作動齒 生驅動力，如此，号Γ你細c^ 前擺動作的順睥斜〜 動輪也此以相同於 搖單_ 、 、 11帶動從動軸23運轉，因此本發明手 播…不論是向前或向 動 “手 吊產生驅動力，而達到連續性的驅動效果。 Ϊ278307 卡人L 單元6°與該從動轴23作 h連動，手搖單元30藉由第-、第二傳動單元4〇 5〇 可帶動該齒盤61 4乍運轉，然而操作 早：4〇、5〇 亓t 卞有』猎由刼作該離合單 0的方式，使動力輸出單元6〇與手搖亓 被驅動。 一 脫離而不 參_ U、圖12’當操作者要分離動力輸出單元的與 1〇 15 2〇 作者傳動單元4〇、5〇之間的連動關係時，首先，操 ㈣合單元7G的把手712往外側扳壓，該把手712 ;:引控制線713對該活_731作一位移，活動架π 卜動該中心車由62及齒盤61朝遠離卡合構件72的方向作 :多動，使齒盤61的卡合凸部612與卡合構件72的卡合凹 T⑵形成脫離’使齒盤61不再受到從動軸μ作動，接 著知作者將该把手712自把手座711 &定位槽川1往外 扳出後’可再向侧邊扳移，使把+ 712得以抵止在把手座 ^的外框緣，如此可令控制線713保持在拉引狀態，藉此 可將動力輸出單元6〇定位在不驅動的狀態。 是故，本發明雙鏈條單向軸承式驅動裝置，主要是為 了解決習知搖擺式驅動裝置1〇驅轉動作斷續及操作不順等 問題，本發明所運用的技術手段是設置第一及第二傳動單 元40、50，第一及第二傳動單元40、50以雙鏈條44、55 方式帶動該從動軸23運轉，兩者内部分別具有第一及第二 早向轴承42、52，且第一及第二單向軸承4;2、52互以不同 的方疋轉方向達成驅轉，如此可令手搖單元30無論是向前或 向後擺動，第一、第二傳動單元40、50皆能適應地對從動 12 1278307 軸23進行_，如此操作者對本發明進行手動前後往復擺 動時，可連續性地產生驅動力，驅動效果相當顯著。另外 ，本發明在主架21兩側對稱地設置第一、第二傳動單元4〇 、50，在運轉過程當令’利用主、從動輪4i、43(51、53)以 5 及雙鏈條4心55的傳動方式，第一、第二傳動單元40、50 的轉動情形乃相當平穩順暢，並且手搖單元3()對主動轴Μ 搖擺操作的力量，經由第一、第二傳動單元4〇、5〇可平均 地被分配承受，因此本發明的使用壽命可更為長久。 惟以上所述者，僅為本發明之一較佳實施例而已，當 10 不能以此限定本發明實施之範圍，即大凡依本發明申請專 利範圍及發明說明書内容所作之簡單的等效變化與修飾， 皆應屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1疋習知輪椅的組合圖，說明該輪椅前方處設有一 15 驅動裝置可手動搖擺以驅動輪椅行進； 圖2是圖1驅動裝置的分解立體圖； 圖3是本發明雙鏈條單向軸承式驅 較 例的組合立體圖，說明本發明主要具有一本體、一手ς 7〇、-第一傳動單元、一第二傳動單元、一動力輸 Ζ〇 及一離合單元； 圖4疋上述較佳實施例的組合立體圖，說明以不 圖3觀視角度的組合情形； 圖5疋上述較佳實施例的正視圖； 圖6疋上述較佳實施例的側視圖（一），說明該手搖單元 13 1278307 是呈後擺動的狀態； 圖7是上述較佳實施例的側視圖（二 +、 是呈前擺動的狀態； 兄月該手搖單元 圖8是上述較佳實施例離合單元一手 ，說明其具有一凹設有定位槽的把手座、：:件：組合圖 的把手、以及一與把手相連的控制線； 入义位槽内 圖9是上述較佳實施例的運轉動作 、 元向前擺動時，藉由第-傳動單元作 #μ手搖單 的情形； 作用動力輸出單元運轉 ίο 15 圖是上述較佳實施例的運轉動作圖（二），划手搖 單元向後擺動時，II由第二傳動單㈣用動力輸出單元運 轉的情形； 說明該把 圖11是上述較佳實施例手控構件的動作圖 手向外扳壓拉引控制線作動的情形；及 Θ 圖12是上述較佳實施例的離人 7雕口動作圖，說明該控制線 可作動一活動架位移，帶動動力鈐山w 刀勒力輸出早元齒盤與裝設在從 動軸上的卡合構件兩者相互脫離的情形。 20 14 1278307 【圖式之主要元件代表符號說明】 2〇*".***" 本體 50……. ••第二傳動單元 1 v#cvft**vAa 主架 51 ·…… "主動輪 22……… 主動軸 52....... «•第二單向轴承 23……… •從動軸 53....... ••從動輪 丨今» 嶠丨4*<(1 ，擋止桿 54….… ••中間輪組 25……… •滑座 541 "… "小鏈輪 資*1· •手搖單元 542 "… μ大齒輪 31 -…… •搖柄座 55....... "鏈條 ，桿孔 56*…… • *惰輪組 312 ****** •第一限位部 5 61 ..... "惰齒輪 313 * …… •第二限位部 60""… "動力輸出單元 •鎖固螺帽 1 吻嶠 ** ·*齒盤 «*«*«*«*' s連動桿 611 …- ••鏈齒 *操縱桿 612 ·…· "卡合凸部 341…… •握把 62·…… ••中心軸 y| Q * + »♦***♦ *第一傳動單元 63…… "瘦板 «*«««6*4 •主動輪 7 0 * · * * * » d -離合單元 42……… •苐一早向抽承 71....... …手控構件 «******»1 •從動輪 711 "… "把手座 W*S(*W**<[： •鍵條 7111·… ••定位槽 ^/j 5 «***«*«> *惰輪組 712 …·· "把手 45 1…… •支架 713 "… ••控制線 4 5 2 …— β惰齒輪 72*·***·· "卡合構件 15 1278307 72卜……卡合凹部 73………復歸構件 731…*…活動架 73 11……軸桿 73 12……延伸桿 732 ·……彈性件1278307 发明Invention Description: [Technical Field] The present invention relates to a driving skirt, and more particularly to a double-chain one-way bearing type driving that can generate a continuous driving force by using a manual rocking method and has a stable transmission effect. Device. [Prior Art] 'The rear wheel 2, which is provided at the rear end of the seat frame 1, the front wheel (not shown) provided at the front end of the frame frame, and the driving device 1 installed at the front of the seat frame i, Referring to FIG. 2, the driving device 1 has a fixing base 11 connected under the seat frame, a sleeve 12 connected to the front of the fixing base u, and a set of reference to FIG. The wheelchair 100 mechanism includes a chair frame 10 15 , a front lever 13 disposed in the sleeve 12 for movable movement, a drive wheel 14 disposed at a position below the front fork lever 13 , and a lever pivoting on the front fork a rocker unit 15 at the upper end of the rod u, the driving wheel 14 includes a wheel body, a turntable 142 coaxially disposed at one side of the wheel body 141, and a wheel 141 disposed in the transfer 142 A unidirectional bearing (not shown), the unidirectional axle control 4 turns | 142 drives the wheel 141 in a single direction, the rod unit 15 has a shaft set on the $ pole 3 a rocker (5), a grip 152 fixed to the upper end of the rocker, and a pivotal connection to the lower end of the rocker i5i = a link 153, the grip 152 being available to the occupant The bottom grip is pivoted, and the lower end of the connector 153 is pivoted to the side of the switch 142, whereby when the occupant swings the 152, the link 153 can drive the turn 142 to swing an angle, U 142 The rim 4ι can be driven by a one-way bearing, so that the driving wheel W drives the entire wheelchair to move forward. 20 1278307 The above-mentioned driving device 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅 轮椅A set of one-way bearings drives the drive rim, so that the rocker 151 only swings backward to drive the drive wheel 14 to rotate, and the forward swing because the one-way bearing idling does not drive the drive wheel 14, so In the first embodiment, the transmission of the driving force of the conventional driving device is intermittent. When the wheelchair 100 is traveling, the operation of the rocker 151 cannot maintain the driving wheel 14 in a rotating state. When encountering an uphill road surface, the 10 wheelchair 1 Since 〇() cannot overcome the sliding force generated by its own weight and it is difficult to advance, the driving ability of the driving device 10 has a great disadvantage. (2) The operation is not smooth. The conventional driving device 10 drives the link 153 by the rocker 151, and then drives the drive wheel 14, but the rocker 151 and the link 153 are both rigid members. The pivot point of each rod is easy to cause a dead point effect, so the driving device 1 经常 often has a stuck phenomenon during the manual rocking process, and the driving action thereof is not smooth. SUMMARY OF THE INVENTION Accordingly, it is a primary object of the present invention to provide a double chain one-way bearing type driving device that produces a continuous and stable transmission effect by a manual rocking motion. The present invention provides a double-chain one-way bearing type driving device, which comprises a body, a hand crank unit, two transmission units and a power output unit. The body has a main frame and a device disposed above the main frame. a drive shaft and a driven shaft disposed under the main frame; the hand crank unit has two 1278307 ίο 15 fixed handle bases fixed at both ends of the drive shaft, and two lower ends are connected to the crank handle The linkage rod and the two rods laterally connected at the upper end of the two linkage rods, the reciprocating rocking of the joystick enables the linkage rod to drive the drive shaft to reciprocate, and the first transmission unit is disposed at one side of the main frame The utility model has a driving wheel on a driving shaft of a shaft 嗖j, a first one-way bearing disposed in the driving wheel and only accepting a driving shaft=a predetermined direction for driving, and a connecting wheel disposed on the driven shaft, And - connecting a chain that is disposed between the main and driven wheels as a transmission; the second transmission unit is disposed at the other side of the main frame relative to the first transmission unit, and has a driving wheel that is disposed on the driving shaft One set at the main The wheel only receives the second shaft of the driving shaft in a direction opposite to the driving direction of the first one-way bearing, the connecting wheel disposed on the driven shaft, and one shaft disposed at the side of the main frame and the slave The moving wheel is connected: and the connection is arranged between the driving wheel and the intermediate wheel set as a heart. The powering wheeling unit is disposed at the side end of the driven shaft, and can be driven by the driven shaft to output power. The effect of the present invention is mainly to utilize the two-distribution transmission with a one-way bearing to communicate with the hand-cranked unit. The power is transmitted by the double-chain driving method to achieve continuous driving and stable and smooth transmission. [Embodiment] The foregoing and other technical contents and features of the present invention will be apparent from the following detailed description of the preferred embodiments. ^ Device - In the preferred embodiment, it mainly comprises - body ^, Cang Figure 3, Figure 4 and Figure 5, the double-chain one-way bearing type drive of the present invention _ 丨_ ^^5 , _ · 1 ' finger 20 1278307 Unit 30' - First Great Meeting 7; - μ Younger Moving 4〇, a second transmission unit 50, a power output unit 60 and a separate person--and off. 7疋, and then the detailed structure and combination of the above components are detailed later. 5 10 15 The force body 20 has an upright main frame 21, a drive shaft L transversely disposed above the main shaft 21, and a driven shaft 23 transversely disposed below the main frame 21, the main body A support bar 24 is disposed transversely to the position of the frame 21 near the drive shaft 22, and a slide seat is disposed transversely to the front of the driven shaft 23. The hand crank το 3G has two rocker seats 31 connected to the two ends of the driving shaft 22, and two locking nuts 32 which are screwed on both ends of the driving shaft 22 to limit and fix the rocker seat 31, The lower end is connected to the linkage rod % on the rocker seat 31, and the lever 34 is laterally connected to the upper end of the two linkage rods 33. Above the handle base 31, there is a rod hole 3 ιιι which can be inserted into the linkage rod, so that the linkage rod 33 can movably adjust the extension length of the linkage rod 33, and a screw is screwed into the rear of the handle holder 31. (not shown) can be screwed to the linkage rod % 卩 to fix its position. The two joysticks 34 each have a grip 341 at the end for the operator to swing with both hands for swinging. The joystick 34 is laterally connected to the second linkage #33 for the operator to hold with one hand. The rocking motion is performed. A first limiting portion 312 and a second limiting portion 313 are respectively extended from the upper and lower ends of the rocker seat 31. The first limiting portion 312 is disposed in a horizontal direction, and the second limiting portion 313 is in a horizontal direction. The vertical direction is set, and the two are separated by an angular range of about 9 degrees. When the linkage rod 33 drives the handle base 31 to swing forward and backward, the first and second limiting portions 312 and 313 are just received by the body 20 to block the rod 24. The abutment is used to limit the amplitude of the swing of the hand crank unit 30, as shown in Figs. Referring to FIG. 4, the first transmission unit 40 is disposed on one side of the main frame 21 20 5 10 15 20 1278307 ^ It has an axis disposed on the driving wheel 22, 6^7 + 4 active on the 41 & The upper driving wheel 41 is sleeved on the first one-way bearing 42 which is only driven by the driving shaft 22 in a predetermined direction (for example, clockwise white), and the driven 趴The driven shaft 23 drives (10), a chain 44 that is connected between the main and driven wheels 41, 43 as a special action, and an idler T-to-4 chain wheel that is disposed on the main shoulder for rolling. Yuan Zhen, 5. The driving wheel 41 and the driven wheel 43 are all in the sprocket. The hunting is carried by the key bar 44. The two can be entered into the old, · _ 〇 ·, * and 4 "Mesh % is connected to the nuclear link transmission, the idle T 45 has a bracket state fixed to the main frame 21, and the position of the idler wire 452 which is disposed on the bracket state and connected to the chain 44 (four) can appropriately adjust the tension of the chain 44. The second transmission unit 5G is disposed at the other side of the main frame 2ι relative to the first transmission unit 40, and has a wheel 51 disposed on the main (four) η, and is sleeved in the driving wheel 51 to receive only active A second one-way bearing 52 that is driven in a direction opposite to the first-direction bearing 42 (for example, a counterclockwise direction), a driven wheel that is connected to the driven shaft 23, and an axis are provided in the main The middle = wheel ^4, the connection between the side of the frame 21 and the driven wheel 53 is connected between the driving wheel 51 & the intermediate wheel set 54; the interlocking key bar 55, and - is disposed on the main frame An idler gear set 56 on which the chain can be abutted. The driving wheel 51 is a sprocket element, the driven wheel μ | element, and the intermediate contact 54 has a small sprocket 541 and a small sprocket: a coaxially disposed large gear 542 by which the small sprocket 541 is The main wheel 51 reaches a link transmission, and the driving wheel 51 and the intermediate wheel set & a are actively rotated, and the large gear 542 and the driven wheel 53 are coupled to each other. The driving wheel 53 and the driving wheel 51 are rotated in opposite directions, the idle The wheel set '56 is the same as the ^ 9 5 10 15 20 1278307 idler set 45, and its 561 rolls against the chain 55. ..., - an idler gear extractable unit 6 that can be adjusted in displacement is disposed at the side end of the driven surface 23, and the power output outputs power externally. In this embodiment, the traverse through the driven toothed disc 61, a central shaft 62 fixed to the outer portion of the center of the toothed disc 61, and - is provided on the toothed disc 6! is connected to the other plate Ο ° the outer portion of the sprocket Μ has a plurality of sprocket 611 for the link ^ chain is not shown) Or other output elements 'to transmit their driving force to the outside' I are provided with a plurality of engaging protrusions 612 halved near the center. The armor 7 includes a hand-held member disposed on the main frame 21, and an engaging member 72 disposed at the end of the movable shaft 23 at the end of the clutch 61, and - disposed on the driven shaft 23 A resetting member 73 is provided for lateral displacement at one end. Referring to FIG. 8, the manual control unit 71 has a handle base 711 fixedly attached to the main wood 21, a handle m provided on the handle base, and a control line 713 connected to the handle 712. The 711 is recessed - for the handle 712 to be inserted into the positioning groove 7 (1) for positioning, the control wire 713 is a cable, one end of which is connected to the handle 712, and the other end is connected to the reset member 73. Referring to FIG. 5, the engaging member 72 has a disk shape, and a plurality of engaging recesses 72 are provided in the circumferential surface of the partitioning hole. The purpose of providing the plurality of engaging recesses 721 is to minimize the time. The engaging recessed portion 721 is engaged with the engaging convex portion 612 on the spur 61, and the driven shaft 23 is integrally coupled with the spur 61. The resetting member 73 has a movable frame 731 and an elastic member 732. The movable frame 731 has a slightly l-shaped shape, and has a sliding sleeve 73 extending into the sliding seat 25 and a shaft sleeve 10 1278307. At the end of the central shaft 62, an extension rod 7312, which is sleeved on the central shaft 62, can push the extension rod 7312, thereby providing the central shaft 62 and the disc 61 having the direction of moving toward the engaging member 72. The rebound of the force. 5 10 15 20 or more is an overview of the shape and combination space type of each component of the double-chain one-way bearing type driving device of the present invention; and then, the operation of the present invention and the expected effect can be stated as follows: FIG. 9 'when the operator manipulates the hand crank unit 3 to swing forward, the linkage lever 33 drives the drive shaft 22 to rotate in a clockwise direction, which causes the first one-way bearing 42 to be driven. Rotating, and the second one-way bearing 52 is idling, so that the driving wheel of the first transmission unit 4〇 is driven, and the driven wheel rim is driven by the chain 44 of the first transmission unit 4' The slave _ 23 drives the toothed disc 6 顺 clockwise to generate a driving force. Qin axis 23: Read Figure 1〇' When the operator manipulates the hand crank unit 3〇, the linkage lever 33 will drive the main assembly 7 to "fine", and rotate in the counterclockwise direction. The second one-way shaft 祆52 is driven by the moving, and the first single bearing 42 is idling, the early door is driven, and the driving wheel 51 of the second transmission unit is 50 会 chain of α ^ _ 55 drive intermediate wheel set 54 rotates from the time of the delay pin, the middle wheel set clockwise direction, and then its driven wheel 53 turns in the direction of ten directions, the driven wheel 53 reproduces the same disk 61. The driven shaft 23 is driven to generate a driving force of the teeth, so that the slanting slanting movement of the swaying motion is also the same as that of the swaying _, 11, and the driven shaft 23, so the present invention Hand-casting... Whether moving forward or moving, the hand-drive produces a driving force that achieves a continuous driving effect. Ϊ 278307 The card player L unit 6° is interlocked with the slave shaft 23, and the hand crank unit 30 can drive the chain gear 61 to operate by the first and second transmission units 4〇5〇, but the operation is early: 4〇 5〇亓t 』 猎 猎 猎 刼 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 离 离 离 离 离 离 离 离 离 离When the operator wants to separate the linkage relationship between the power output unit and the 1传动15 2〇 author transmission unit 4〇, 5〇, first, the handle of the unit 4G is operated. The 712 is pressed to the outside, the handle 712; the control line 713 is displaced by the movement 731, and the movable frame π moves the center car 62 and the toothed plate 61 away from the engaging member 72: The engaging convex portion 612 of the toothed disc 61 is disengaged from the engaging recess T(2) of the engaging member 72 so that the toothed disc 61 is no longer actuated by the driven shaft μ, and then the author holds the handle 712 from the handle seat 711 & After the positioning groove 1 is pulled out, it can be moved to the side again, so that the + 712 can be restrained on the outer frame edge of the handle seat ^, so that the control line 713 can be kept in the pulling state, thereby powering The output unit 6 is positioned in a state of no driving. Therefore, the double-chain one-way bearing type driving device of the present invention mainly solves the problems of the conventional swinging driving device 1 〇 driving action intermittent operation and unsatisfactory operation, and the technical means used by the present invention is to set the first and the first The two transmission units 40, 50, the first and second transmission units 40, 50 drive the driven shaft 23 in the manner of double chains 44, 55, respectively, having first and second early bearings 42, 52 therein, and The first and second one-way bearings 4; 2, 52 are driven in different directions of rotation, so that the hand-cranking unit 30 can swing forward or backward, the first and second transmission units 40, 50 The driven shaft 12 1278307 can be adaptively _, so that the operator can continuously generate the driving force when manually swinging back and forth in the present invention, and the driving effect is remarkable. In addition, the present invention symmetrically disposes the first and second transmission units 4〇, 50 on both sides of the main frame 21, and during operation, 'use the main and driven wheels 4i, 43 (51, 53) to 5 and the double chain 4 In the transmission mode of 55, the rotation of the first and second transmission units 40, 50 is relatively smooth and smooth, and the force of the manual unit 3() on the driving operation of the driving shaft is via the first and second transmission units 4, The crucible can be evenly distributed, so that the service life of the present invention can be longer. However, the above is only a preferred embodiment of the present invention, and 10 is not intended to limit the scope of the present invention, that is, the simple equivalent change made by the scope of the present invention and the contents of the invention description Modifications are intended to be within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a combination view of a conventional wheelchair, showing that a 15 driving device is provided in front of the wheelchair to manually swing to drive the wheelchair; FIG. 2 is an exploded perspective view of the driving device of FIG. 1. FIG. A combined perspective view of a double-chain one-way bearing type drive, illustrating that the present invention mainly has a body, a hand, a first transmission unit, a second transmission unit, a power transmission unit and a clutch unit;组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合 组合The hand crank unit 13 1278307 is in a state of being swung rearward; FIG. 7 is a side view of the above preferred embodiment (two +, is a state of swinging forward; the hand crank unit of FIG. 8 is the clutch of the above preferred embodiment) The unit has a handle, which has a handle seat recessed with a positioning groove, a member: a handle of the combination diagram, and a control line connected to the handle; FIG. 9 is the operation of the preferred embodiment. , When the element swings forward, the first drive unit makes #μ手摇单; the action power output unit operates ίο 15 is the operation action diagram (2) of the above preferred embodiment, when the hand crank unit swings backward , II is operated by the second transmission unit (four) with the power output unit; FIG. 11 is a diagram showing the operation of the hand control member of the preferred embodiment of the above-described preferred embodiment by pulling the control line outward; and FIG. It is an action diagram of the engraving port of the above-mentioned preferred embodiment, which shows that the control line can actuate a movable frame displacement, and drives the power of the 钤山w knife to output the early element sprocket and the engagement on the driven shaft. 20 14 1278307 [The main components of the diagram represent the symbol description] 2〇*".***" The body 50....... ••The second transmission unit 1 v#cvft**vAa Main frame 51 ·... "Drive wheel 22......... Drive shaft 52....... «•Second one-way bearing 23......... • Drive shaft 53....... ••From丨 丨 » » 峤丨 4* < (1, stop rod 54....... • • intermediate wheel set 25......... • slide 541 "... "Small chain rotation*1·•Hand crank unit 542 "... μ large gear 31 -... • Rocker seat 55....... "Chain, rod hole 56*... • *Idle wheel Group 312 ****** • First limit unit 5 61 ..... "Idle gear 313 * ...... • Second limit unit 60""... " Power take-off unit • Locking nut 1 Kiss 峤 ** · * sprocket « * « * « * « * ' s linkage rod 611 ... - • • sprocket * joystick 612 · ... · " snap convex 341... • grip 62... ... ••Center axis y| Q * + »♦***♦ *First transmission unit 63... "Thin board «*««««6*4 • Drive wheel 7 0 * · * * * » d - Clutch Unit 42......... • 抽 early to draw 71....... ... manual control unit «******»1 • driven wheel 711 "... " handle seat W*S (*W* *<[: • Keybar 7111·... ••Positioning slot^/j 5 «***«*«> * Idler set 712 ...·· "Handle 45 1... • Bracket 713 "... • Control line 4 5 2 ... - β idler gear 72*·***·· " engaging member 15 1278307 72... engaging recess 73.........returning member 731...*... Moving frame 73 11...... shaft 73 12... extension rod 732 ·...... elastic parts