1250013 玖、發明說明 (發明說明應敘明：發明所屬之技術領域、先前技術、內容、實施方式及圖式簡單說明） 【發明所屬之技術領域】 本發明係與輪椅有關，特別是指一種可直立輪椅及其 直立方法，其使用方便且安全性佳者。 5 【先前技術】 按，習知可直立輪椅於坐姿轉換成立姿時，有先整個 躺平再旋轉站立者，亦有由坐姿先轉換成蹲姿再站立者， 然此等直立方式於實際使用時均極不方便，例如：乘坐者 有時只是想提昇高度與一般人平視交談，有時是想拿取高 10 處物品，並無須完全站立，甚至保持坐姿即可，然習知結 構之設計卻必須讓乘坐者完全站立始能達到目的，使用上 極為不便，甚至有些設計係將座椅前翻形成站姿，將令乘 坐者重心提高且前移，更大幅增加發生意外的可能性。 15 【發明内容】 有鑑於上述缺失，本發明之主要目的即在提供一種可 直立輪椅及其直立方法，其使用方便且安全性佳者。 本發明之另一目的在於提供一種可直立輪椅及其直立 方法，其可保持乘坐者坐姿並升高者。 20 為達成前揭目的，本發明所提供之可直立輪椅係包含 有一輪架，一座椅，一中桿，一頂桿，一短桿，一底桿， 以及一致動器；該輪架具有一底架與若干轉輪設於該底架 上，該座椅具有一背架，一座架藉一第一樞抽與該背架連 接在一起，一腳架藉一第二樞軸與該座架連接在一起，一 ΪΙ續次頁（發明說明頁不敷使用時，請註記並使用續頁） -4- 1250013 發明說明$賣胃 支桿以其二端分別樞設於該背架與該腳架，以及一彈性件 以其二端分別設於該座架與該腳架上，該中桿係以其第一 端與該第一樞軸連接，並以其第二端與該底架樞接，該頂 桿係以其第一端與該背架樞接，並以其第二端與該底架樞 5 接，且該頂桿係與該中桿概呈平行者，該短桿係以其頂端 與該中桿之第二端樞接，該底桿係以其第一端與該座架樞 接，並以其第二端與該短桿之底端樞接，且該底桿係與該 中桿概呈平行者，該致動器係以其二端分別設於該底架與 該底桿上；其中，該底架具有一卡止部位於該頂桿與該中 10 桿之間，用以限制該頂桿向下旋擺及該中桿向上旋擺之角 度。 本發明所提供之輪椅直立方法則包含有以下步驟： 一、將一座椅相對於一輪架向上抬昇，其中該輪架具有一 底架與若干轉輪，該座椅則具有一背架，一座架藉一第一 15 樞軸與該背架連接在一起，以及一腳架藉一第二樞軸與該 座架連接在一起；二、將該座架以該第一樞軸為軸心向下 旋擺，此時該腳架係以該第二樞軸為軸心相對該座架旋 擺，使該背架、該座架與該腳架概呈直立狀。 20 【實施方式】 為了詳細說明本發明之構造及特點所在，茲舉以下一 較佳實施例並配合圖式說明如后，其中： 第一圖係本發明一較佳實施例之正視圖。 第二圖係本發明一較佳實施例之剖視圖。 -5- 1250013 _ 發明說明續頁 第三圖係本發明一較佳實施例第一動作狀態之示意 圖。 第四圖係本發明一較佳實施例第二動作狀態之示意 圖。 5 請參閱第一至二圖，本發明一較佳實施例所提供之可 直立輪椅1係包含有一輪架10，一座椅20，二中桿30， 二頂桿35，二短桿40，二底桿45，以及二致動器50。 該輪架10具有一呈立方狀之底架12，以及四轉輪14 設於該底架12上，提供輪椅1前進或後退之功能，該底架 10 12具有二卡止部15位於該頂桿35與該中桿30之間，該 等卡止部15分別具有一頂面151與一斜面152，此外，該 底架12左右二邊更設有二平行之導軌16與二呈倒L形之 擋止部18。 該座椅20具有一背架22，一座架23藉一第一樞軸24 15 與該背架22連接在一起，以及一腳架25藉一第二樞軸26 與該座架23連接在一起，其中，該背架22具有一尾部221 向下延伸而出，該腳架25則具有一連接部251向後延伸而 出，一支桿27以其二端分別樞設於該背架22尾部221與 該腳架25連接部251，此外，該座架23後端設有二懸臂 20 231，該腳架25中段則設有一橫桿252，二拉伸彈性件28 分別以其二端設於該座架23懸臂231與該腳架25之橫桿 252上，提供該腳架25相對該座架23向内旋擺之預力。 該中桿30係以其第一端31 (後端）與該第一樞軸24 連接，並以其第二端32 (前端）與該底架12樞接。 -6- 1250013 _ 發明說明續頁 該頂桿35係以其第一端36(後端）與該背架22樞接， 並以其第二端37 (前端）與該底架23樞接，且該頂桿35 係與該中桿30概呈平行者。 該短桿40係以其頂端41與該中桿30之第二端32樞 5 接。 該底桿45係以其第一端46(後端）與該座架23樞接， 並以其第二端47 (前端）與該短桿40之底端42樞接，且 該底桿45係與該中桿30概呈平行者。 該致動器50於本實施例中為一油壓缸，具有一缸體52 10 與一出力軸54由該缸體52延伸而出，該缸體52係以其底 端樞設於該底架12，該出力軸54則與該底桿45樞接。 玆詳述本發明所提供輪椅1之直立方法如下，當該輪 椅1呈低坐姿時，如第一、二圖所示，該底桿45將受該底 架12擋止部18抵頂，且該頂桿35係貼抵於該底架12卡 15 止部15之頂面151，而使該座椅20得以支撐乘坐者之體 重；當該致動器50之出力軸54伸出缸體52時，如第三圖 所示，概呈平行之底桿45、中桿30與頂桿35將由水平位 置沿順時針方向旋轉，同時驅動該座椅20相對該輪架10 向上抬昇，由低坐姿轉換至高坐姿，此時乘坐者即可與一 20 般人平視交談或拿取高處物品；當乘坐者欲站立時，即可 再驅動該致動器50使其出力軸54進一步伸出，由於該中 桿30已貼抵於該卡止部15之斜面152而無法再旋擺，該 致動器50將克服該彈性件28之彈力而驅使該底桿45將向 斜上方移動，如第四圖所示，使該座架23以該第一樞軸 1250013 _ 發明說明續頁 24為軸心沿順時針方向旋擺，此時，該腳架25係以該第 二樞軸26為軸心相對該座架23旋擺，由於該支桿27之連 結，該腳架25將保持與該背架22略呈平行，最終該座架 23底端將抵頂至該底架12之擋止部18，使該背架22、該 5 座架23與該腳架25概呈直立狀，達成輪椅之立姿狀態。 由於本發明之輪椅由坐姿轉換為站姿之過程，係先由 低坐姿轉換為高坐姿，因此無論是拿取高處物品或是與一 般人平視交談，乘坐者均無須改變成站姿，不僅方便更為 舒適，且改變成站姿時，腳部貼近地面，身體重心極低且 10 重心移動量極微，安全性極佳，特別適合下半身癱瘓或行 動不便之使用者，能有效改善習知結構之缺失，從而達成 本創作之目的。 值得注意的是，當乘坐者於站姿拿取重物後，由於總 承載重量改變，該致動器50出力軸54回縮時，該座架23 15 底端將沿該導軌16滑移向前，使該座椅20改變成高坐姿， 再進一步回復至低坐姿，不會因為拿取重物而造成輪椅之 誤動作，其安全性較習知結構更具增進，另實際製造時， 該致動器50可採用任何線性輸出之裝置，如氣壓缸、線性 馬達等，其種類並無限制；甚至該致動器50可採用無動力 20 源之設計，僅提供彈力使該出力軸伸長，以驅動該座椅昇 高及直立，亦為本發明申請專利範圍所涵蓋。 -8- 1250013 _ 發明說明, 【圖式簡單說明】 第一圖係本發明一較佳實施例之正視圖。 第二圖係本發明一較佳實施例之剖視圖。 第三圖係本發明一較佳實施例第一動作狀態之示意 5 圖。 第四圖係本發明一較佳實施例第二動作狀態之示意 圖。 【圖式符號說明】 1可直立輪椅 10 10輪架 12底架 14轉輪 15卡止部 151頂面 152斜面 16導軌 18擋止部 20座椅 22背架 221尾部 15 23座架 231懸臂 24第一樞軸 25腳架 251連接部 252橫桿 26第二樞軸 27支桿 28彈性件 20 30中桿 31第一端 32第二端 35頂桿 36第一端 37第二端 40短桿 41頂端 42底端 45底桿 46第一端 47第二端 50致動器 52缸體 54出力軸 -9- 251250013 发明, the description of the invention (the description of the invention should be described: the technical field, the prior art, the content, the embodiment and the schematic description of the invention) TECHNICAL FIELD The present invention relates to a wheelchair, and in particular to a The upright wheelchair and its erect method are easy to use and safe. 5 [Prior Art] According to the conventional erect wheelchair, when the posture is changed to the sitting position, the person who has lie flat and then rotates the standing position first, and also the person who is converted into a kneeling position and then stands by the sitting posture, but the erect mode is actually used. It is extremely inconvenient at times. For example, the occupant sometimes just wants to raise the height to talk with the average person. Sometimes he wants to take 10 items higher. He does not need to stand completely or even sit still. However, the design of the structure is well known. However, the occupant must be fully stood up to achieve the goal, and the use is extremely inconvenient. Even some designs turn the seat forward to form a standing position, which will increase the center of gravity of the occupant and move forward, which greatly increases the possibility of accidents. 15 SUMMARY OF THE INVENTION In view of the above-mentioned deficiencies, the main object of the present invention is to provide an upright wheelchair and an erect method thereof which are convenient to use and safe. Another object of the present invention is to provide an upright wheelchair and an erect method thereof that can maintain an occupant's sitting position and raise it. 20 For the purpose of achieving the foregoing, the upright wheelchair system provided by the present invention comprises a wheel frame, a seat, a middle pole, a jack, a short rod, a bottom rod, and an actuator; the wheel frame has A chassis and a plurality of rotating wheels are disposed on the chassis, the seat has a back frame, and a frame is coupled to the back frame by a first pivoting, and the foot frame is coupled to the seat by a second pivot The racks are connected together, and the next page (when the invention page is not enough, please note and use the continuation page) -4- 1250013 Description of the invention: Selling the stomach poles with their two ends pivoted to the back frame and the a tripod and an elastic member are respectively disposed on the frame and the stand with two ends thereof, the middle rod is connected with the first pivot shaft at a first end thereof, and the second end and the chassis are Pivot, the jack is pivotally connected to the back frame by a first end thereof, and is connected to the chassis pivot by a second end thereof, and the jack is substantially parallel to the middle rod, the short rod The bottom end is pivotally connected to the second end of the middle rod, the bottom rod is pivotally connected to the seat frame by the first end thereof, and the second end is pivotally connected to the bottom end of the short rod. The bottom rod is substantially parallel to the middle rod, and the actuator is disposed on the bottom frame and the bottom rod at two ends thereof; wherein the bottom frame has a locking portion located at the top rod and the bottom rod Between the middle 10 poles, it is used to limit the angle at which the jack is swung downward and the middle rod is swung upward. The wheelchair erecting method provided by the present invention comprises the following steps: 1. Lifting a seat upward relative to a wheel frame, wherein the wheel frame has a chassis and a plurality of wheels, and the seat has a back frame. a frame is coupled to the back frame by a first 15 pivot, and the tripod is coupled to the frame by a second pivot; and the stand is pivoted by the first pivot Rotating downwardly, the stand is pivoted relative to the frame with the second pivot as an axis, so that the back frame, the frame and the stand are vertically upright. The first embodiment is a front view of a preferred embodiment of the present invention. The following is a description of the preferred embodiment of the present invention. The second drawing is a cross-sectional view of a preferred embodiment of the invention. -5 - 1250013 - EMBODIMENT OF THE INVENTION The third drawing is a schematic view of a first operational state of a preferred embodiment of the present invention. Figure 4 is a schematic illustration of a second operational state of a preferred embodiment of the present invention. 5 Referring to the first to second figures, an upright wheelchair 1 according to a preferred embodiment of the present invention includes a wheel carrier 10, a seat 20, two middle poles 30, two top poles 35, and two short poles 40. Two bottom bars 45, and two actuators 50. The wheel frame 10 has a cubic chassis 12, and the four wheels 14 are disposed on the chassis 12 to provide the wheelchair 1 to advance or retreat. The chassis 10 12 has two locking portions 15 at the top. Between the rod 35 and the middle rod 30, the locking portions 15 respectively have a top surface 151 and a slope 152. In addition, the left and right sides of the chassis 12 are provided with two parallel rails 16 and two inverted L-shaped Stop portion 18. The seat 20 has a back frame 22, a frame 23 is coupled to the back frame 22 by a first pivot 24 15 , and the stand 25 is coupled to the frame 23 by a second pivot 26 The back frame 22 has a tail portion 221 extending downwardly. The leg frame 25 has a connecting portion 251 extending rearwardly. A rod 27 is pivotally disposed at the rear end of the back frame 22 at two ends thereof. The second frame of the frame 23 is provided with a second cantilever 20 231. The middle portion of the frame 25 is provided with a cross bar 252. The two tensile elastic members 28 are respectively disposed at the two ends thereof. The cantilever 231 of the mount 23 and the crossbar 252 of the stand 25 provide a pre-stress for the inward swing of the stand 25 relative to the mount 23. The middle rod 30 is connected to the first pivot 24 with its first end 31 (rear end) and to the bottom frame 12 with its second end 32 (front end). -6- 1250013 _ Continuation page The ram 35 is pivotally connected to the back frame 22 by its first end 36 (rear end), and is pivotally connected to the chassis 23 by its second end 37 (front end). And the jack 35 is substantially parallel to the middle rod 30. The short rod 40 is pivotally connected to the second end 32 of the center rod 30 by its top end 41. The bottom rod 45 is pivotally connected to the frame 23 by its first end 46 (rear end), and is pivotally connected to the bottom end 42 of the short rod 40 by its second end 47 (front end), and the bottom rod 45 It is parallel to the middle rod 30. In this embodiment, the actuator 50 is a hydraulic cylinder having a cylinder block 52 10 and a power output shaft 54 extending from the cylinder block 52. The cylinder block 52 is pivoted at the bottom end thereof. The frame 12 is pivotally connected to the bottom rod 45. DETAILED DESCRIPTION OF THE INVENTION The erecting method of the wheelchair 1 provided by the present invention is as follows. When the wheelchair 1 is in a low sitting position, as shown in the first and second figures, the bottom rod 45 will be abutted by the stop portion 18 of the chassis 12, and The jack 35 is attached to the top surface 151 of the frame 15 of the chassis 12 to enable the seat 20 to support the weight of the occupant; when the output shaft 54 of the actuator 50 extends out of the cylinder 52 At the same time, as shown in the third figure, the substantially parallel bottom rod 45, the middle rod 30 and the top rod 35 will be rotated clockwise from the horizontal position, while driving the seat 20 upwardly relative to the wheel frame 10, from low When the sitting posture is switched to the high sitting position, the occupant can talk with a 20-person person or take a high-altitude item; when the occupant wants to stand, the actuator 50 can be driven to further extend the output shaft 54. Since the middle rod 30 has been attached to the inclined surface 152 of the locking portion 15 and can no longer swing, the actuator 50 will overcome the elastic force of the elastic member 28 to drive the bottom rod 45 to move obliquely upward, such as As shown in the fourth figure, the frame 23 is pivoted clockwise in the first pivot 1250013 _ continuation page 24 of the invention. The stand 25 is pivoted relative to the frame 23 with the second pivot 26 as an axis. Due to the connection of the strut 27, the stand 25 will remain slightly parallel to the back frame 22, and finally the stand The bottom end of the chassis 23 is abutted to the stop portion 18 of the chassis 12, so that the back frame 22, the five frame 23 and the stand 25 are substantially upright, and the wheelchair is in a standing state. Since the wheelchair of the present invention is converted from a sitting posture to a standing posture, the first posture is converted from a low sitting posture to a high sitting posture, so that the occupant does not have to change into a standing posture, whether it is taking a high-altitude object or talking with a general person. Convenient and more comfortable, and when changing into a standing position, the feet are close to the ground, the center of gravity is extremely low, and the center of gravity of the center of gravity is extremely small, and the safety is excellent. It is especially suitable for users with lower body or inconvenient movements, which can effectively improve the conventional structure. The lack of, in order to achieve the purpose of this creation. It should be noted that when the occupant takes the weight in the standing position, the bottom end of the frame 23 15 will slide along the guide rail 16 when the output shaft 54 of the actuator 50 is retracted due to the change of the total load weight. In the past, the seat 20 is changed into a high sitting posture, and then returned to a low sitting posture, which does not cause a malfunction of the wheelchair due to taking a heavy object, and the safety is improved compared with the conventional structure, and in actual manufacture, the The actuator 50 can adopt any linear output device, such as a pneumatic cylinder, a linear motor, etc., and the type thereof is not limited; even the actuator 50 can adopt an unpowered 20-source design, and only provides an elastic force to extend the output shaft to Driving the seat up and upright is also covered by the scope of the invention. -8- 1250013 _ Description of the Invention, BRIEF DESCRIPTION OF THE DRAWINGS The first drawing is a front view of a preferred embodiment of the present invention. The second drawing is a cross-sectional view of a preferred embodiment of the invention. The third figure is a schematic diagram of a first operational state of a preferred embodiment of the present invention. Figure 4 is a schematic illustration of a second operational state of a preferred embodiment of the present invention. [Illustration of Symbols] 1 erectable wheelchair 10 10 wheel frame 12 undercarriage 14 reel 15 locking portion 151 top surface 152 inclined surface 16 rail 18 stopper portion 20 seat 22 back frame 221 tail portion 15 23 frame 231 cantilever 24 First pivot 25 tripod 251 connecting portion 252 crossbar 26 second pivot 27 strut 28 elastic member 20 30 middle rod 31 first end 32 second end 35 ejector 36 first end 37 second end 40 short rod 41 top 42 bottom end 45 bottom rod 46 first end 47 second end 50 actuator 52 cylinder 54 output shaft -9- 25