M315083 八、新型說明： 【新型所屬之技術領域】 本新型是有關於-種義肢膝關節，特別是指一種義肢 膝關節之氣壓緩衝裝置。 【先前技術】 如圖1所示，一般義肢膝關節1包含一第一關節座u 及-第二關節座12，第一、第二關節座u、η之間藉由 -連動桿13相連接，義肢膝關節丨的緩衝裝置14設置於 第二關節座12内並與第一關節座u相連接，用以使來自義 肢大腿部(圖未示)傳遞到座體u上的行走下壓力獲得緩衝 ’、羨衝表置14包括一没於第二關節座12内的容置空間⑷ 、一固設於容置空間141内的封閉座142，及—穿設於容置 空間141内的活塞143。封閉座142將容置空間i4i内區隔 成-上氣室144與-下氣室145，活塞143具有一與第二連 動桿15樞接的第-塞體146，第—塞體146底端朝下凸伸 ( '穿過封閉座142的桿部147 ’桿部147底端設有一位於下 氣室145内並與彈簧16抵接的第二塞體148。此外，緩衝 裝置14還包括-設於第二關節座12 —側並使上氣室144 與下氣室145相連通的流道149’及_用以控制氣體通過流 道149之流量的調節件150。 義肢膝關f 1由伸直狀態轉換為f曲狀態時，第一關 節座11朝箭頭V所㈣順時針方向旋轉並驅使第二連動桿 15下移，使活塞143沿箭頭VI方向向下移動，此時第—塞 體146將上氣室144内的氣體擠壓並經流道149流通至下 5 M315083 氣室145内，藉由調節件15〇朝上或朝下位移，作遮蔽流 道149面積大或小的調節，以控制氣體通過流道149之流 量的大小，藉此以控制義肢膝關節i彎曲時的柔軟度。當 伸直義肢膝關節1時，活塞143上移，活塞143的第二塞 體148將下氣室145内的氣體擠壓並經流道149流通至上 氣室144内，搭配調節件150控制氣體由下氣室145流通 至上氣室144的流量，藉此以控制義肢膝關節丨伸直時的 柔軟度。然而，緩衝裝置14需在第二關節座12 一側設計 流道149使上氣室144與下氣室145相連通，因此第二關 節座12在叹计時需增加厚度，使流道149及調節件皆 可设置於第二關節座12同側，此種設計方式不但增添製造 上的複雜度，更增添製造的成本。 【新型内容】 因此，本新型之主要目的，在於提供一種構造簡單、 製造成本低’以及彎曲、伸直的動作順暢之義肢膝關節。 於是’本新型義肢膝關節，包含一第一關節座、一第 二關節座、一氣壓緩衝裝置及一連動機構。 第二關節座設於第一關節座下方，氣壓緩衝裝置包括 基庄 刀隔件及一活塞，基座設置於第二關節座内並 界定出一容置空間，分隔件設置於基座内並將容置空間區 隔為一上氣室與一下氣室，分隔件具有一内周面，及一由 内周面所界定出使上、下氣室相連通的穿孔。活塞可上下 位移地設置於容置空間内，並具有一穿過穿孔的桿部、一 設置於桿部且位於上氣室内的第一塞體，及一設置於桿部 6 M315083 且位於下氣室内的第二塞 界定出—使上、T- 1，、刀隔件的内周面共同 下乳至相連通的流道。 接於第-關節座盥第連動機構包括-樞 接於第-連動桿之間的第-連動桿，及-枢 運動才干與活塞頂端的第二連動 座經由連動機構相對於第二料 =第一關節 弟-塞體可分別在上、下氣室内位移，使〜 氣體可經由流道流通。 下軋至内的 =新型的另一特徵在於氣壓緩衝裝置還包 = 抵接於第二塞體與基座之間的彈性元件。連動 第-連動桿前側的前連動桿。第-關即座之間且位於 本新型義肢膝關節，藉由活塞的桿部外後小於由内周 面所界定出的穿孔孔徑，使得分隔件的内周面與活塞的桿 部之間界定出使上、下氣室相連通的流道，因此義肢膝關 節由伸直狀態變換為f曲狀態時’第一塞體可將上氣室内 的氣體經由流道擠壓至下氣室内，義肢膝關節由彎曲狀態 變換為伸直狀態時，活塞的第二塞體可將下氣室内的氣體 經由流道擠壓至上氣室内，故不需增加第二關節座的厚度 以額外作流道的設計，藉此以降低製造上的複雜度以及製 造的成本。 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一個較佳實施例的詳細說明中，將可 清楚的呈現。 M315083 如圖2及圖3所示，是本新型義肢膝關節之一較佳實 施例，該義肢膝«扇用以連接於-義肢大腿部（圖未示) 與義肢J腿圖未不）之間，義肢膝關節細包含一第一 關即座2第_關節座3、一氣壓緩衝裝置*及一連動機 構5。M315083 VIII. New description: [New technical field] The new type is related to the knee joint of the prosthetic limb, especially the pressure cushioning device of the prosthetic knee joint. [Prior Art] As shown in FIG. 1, the general prosthetic knee joint 1 includes a first joint seat u and a second joint seat 12, and the first and second joint seats u and η are connected by a linkage rod 13 The cushioning device 14 for the prosthetic knee joint is disposed in the second joint seat 12 and connected to the first joint seat u for transmitting the downward pressure from the prosthetic thigh (not shown) to the seat u. The buffering portion 14 includes a receiving space (4) that is not in the second joint seat 12, a closed seat 142 that is fixed in the receiving space 141, and is disposed in the receiving space 141. Piston 143. The closing seat 142 partitions the accommodating space i4i into an upper air chamber 144 and a lower air chamber 145. The piston 143 has a first plug body 146 pivotally connected to the second linking rod 15, and the bottom end of the first plug body 146 Projecting downwardly ('the bottom of the rod portion 147' through the closing seat 142' is provided with a second plug body 148 located in the lower air chamber 145 and abutting against the spring 16. Further, the cushioning device 14 further includes - A flow path 149' and a regulating member 150 for controlling the flow of gas through the flow path 149 are provided on the side of the second joint 12 and the upper air chamber 144 is communicated with the lower air chamber 145. When the straight state is converted to the f-curved state, the first joint seat 11 rotates clockwise in the arrow V (four) and drives the second linkage rod 15 to move downward, so that the piston 143 moves downward in the direction of the arrow VI, at this time, the first plug The body 146 presses the gas in the upper gas chamber 144 and flows through the flow passage 149 into the lower 5 M315083 gas chamber 145, and is displaced upward or downward by the adjusting member 15 to make the shielding flow passage 149 large or small. Adjusted to control the flow of gas through the flow passage 149, thereby controlling the softness of the prosthetic knee joint i when bending. When straightening the prosthetic knee At time 1, the piston 143 moves up, and the second plug body 148 of the piston 143 presses the gas in the lower air chamber 145 and flows through the flow passage 149 into the upper air chamber 144, and the adjusting member 150 controls the gas from the lower air chamber 145. The flow rate to the upper air chamber 144 is thereby controlled to control the softness of the prosthetic knee joint. However, the cushioning device 14 needs to design the flow path 149 on the side of the second joint 12 to make the upper air chamber 144 and the lower air chamber. The 145 is connected, so the second joint 12 needs to be increased in thickness during the sigh, so that the flow passage 149 and the adjusting member can be disposed on the same side of the second joint 12. This design method not only adds manufacturing complexity, but also increases the manufacturing complexity. Adding the cost of manufacturing. [New content] Therefore, the main purpose of the present invention is to provide a prosthetic knee joint that is simple in construction, low in manufacturing cost, and smooth and straight, and thus has a smooth knee joint. a first joint seat, a second joint seat, a pneumatic buffer device and a linkage mechanism. The second joint seat is disposed under the first joint seat, the air pressure buffer device comprises a base knife partition and a piston, and the base is disposed at the first two An accommodating space is defined in the joint seat, the partition member is disposed in the pedestal and the accommodating space is partitioned into an upper air chamber and a lower air chamber, the partition member has an inner circumferential surface, and an inner circumferential surface Defining a perforation for connecting the upper and lower air chambers. The piston is vertically displaceably disposed in the accommodating space, and has a rod portion passing through the through hole, and a first plug body disposed in the rod portion and located in the upper air chamber And a second plug disposed in the rod portion 6 M315083 and located in the lower air chamber defines - the upper, T-1, and the inner peripheral surface of the knife partition are jointly milked to the connected flow passages. The joint mechanism linkage mechanism includes a first linkage rod pivotally connected between the first linkage rods, and a second linkage seat of the pivotal movement and the piston tip end via the linkage mechanism relative to the second material=first joint brother- The plug body can be displaced in the upper and lower gas chambers respectively, so that ~ gas can flow through the flow channel. Another feature of the new type that is rolled down to the inside is that the air pressure buffering device also includes a resilient element that abuts between the second plug body and the base. Linking the front linkage of the front side of the first linkage lever. The first-to-close seat is located between the seat and the knee joint of the present invention. The outer peripheral surface of the piston is smaller than the perforation aperture defined by the inner peripheral surface, so that the inner peripheral surface of the partition member and the rod portion of the piston are defined. The flow path connecting the upper and lower air chambers, so when the prosthetic knee joint is changed from the straight state to the f-curved state, the first plug body can press the gas in the upper air chamber into the lower air chamber via the flow passage, and the prosthetic knee When the joint is changed from the bent state to the straightened state, the second plug body of the piston can press the gas in the lower air chamber into the upper air chamber through the flow passage, so that the thickness of the second joint seat is not required to additionally design the flow passage. Thereby, to reduce the complexity of manufacturing and the cost of manufacturing. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. M315083 As shown in Fig. 2 and Fig. 3, it is a preferred embodiment of the prosthetic knee joint of the present invention. The prosthetic knee [fan is connected to the prosthetic thigh (not shown) and the prosthetic J leg map is not) Between the prosthetic and the knee joints, a first level, a seat 2, a joint joint 3, an air pressure buffer device, and a linkage mechanism 5 are included.
第I即座2包括一用以與義肢大腿部相連接的座體 21及〃座體21相連接並往後延伸的連接桿U，第二關 節座3呈中空管狀且其底端用以與義肢小腿部相連接，藉 由連動機構5的—第—連動桿51上、下兩端分別樞接於第 -：節座：的連接桿22及第二關節座3的後侧頂端，以及 則連動杯52上、下兩端分別樞接於第一關節座2的座體 21及第二關節座3的前側頂端，使得義肢膝關節200能在 一伸直狀態（圖2)及-彎曲狀_ 3)之間變換。 #如圖2、圖3及圖4所示’氣壓緩衝裝置4設置於第二 關即座3 ~，並包括-接合於第二關節座3内的筒狀基座 41以及刀別设置於基座41之容置空間4Η内的一分隔件 42、一活塞43與—彈性元件44。基座41具有-與第二關 節座3螺接的第—座體412，及-螺接於第-座體412底端 的第一座體413 ’第―、第二座體412、413共同界定出容 置空間川，藉由第一座體412底端的端壁414以及第二座 體413内壁面的肩部415分別抵於分隔件42外表面中間處 以及刀隔件42底面，使得分隔件42固定於第一、第二座 體412、413之間並將容置空間411區隔成一上氣室416與 一下氣室417。 8 M315083 分隔件42具有-内周面42卜及一由内周面42i所界 疋使上氣室416與下氣室417相連通的穿孔422，活塞 3具有一位於上氣室416内的的第一塞體431、一由第一 ，體431底端朝下延伸並穿過穿孔422的桿部432，及一固 定=桿部432近底端處且位於下氣室417内的第二塞體咖 ，桿部432的外徑略小於由内周面421所界定出㈣孔似 ，徑，而彈性元件44為一兩端分別抵接於第二塞體奶底 :以及第二座體4U底壁的壓縮彈簧，用以提供活塞43的 设位無力。活塞43的第-塞體431内螺接有_樞接桿物 盘相機構5還包括一兩端分別樞接於第_連動桿Η前側 =接桿叫頂端的第二連桿53，藉此使第―、第二關節 3透過第一連動桿51及前連動桿52在伸直、彎曲狀 匕、曰變換時，第一連動桿5丨可驅使 . ^ i矛一運杯53帶動活塞 3在基座41的容置空間411内上、下往復移動。 當義肢膝關節在伸直狀態時，第—關節座2的座 體24面朝上，且第—關節座2位於第二關節^的上方 室2活塞^的第-、第二塞體431、433分別位於上氣 亩你< 及下軋室417内近頂端處。當義肢膝關節200由伸 :狀恶變換為彎曲狀態時’第一關節座2朝一如箭頭ι所示 第順=方向旋轉且其座體21頂面朝向後方，並同時帶動 連動桿51以及前連動桿52的頂端往前傾斜，使得第 :=桿53下移並帶動活塞43朝-如箭頭η所示的方向 在下移動，此時活塞43的第一、第- 壓縮上氣室416及下氣室417，且第—塞二431、433分別 且弟一塞體431將上氣室 M315083 416内的氣體經由分隔件42的内周面421與桿部432之間 所界定出的流道423擠屢至下氣室417内，同時第二塞體 433壓鈿彈性凡件44並使其變形而蓄積復位彈力。 —如圖2及圖5所示，當義肢膝關節2〇〇由彎曲狀態回 復為伸直狀態時，第-關節座2朝-如箭頭m所示的：時 針方向旋轉’並同時帶動第—連動桿51以及前連動桿Μ 的頂端往後傾斜，使得第二連動桿53上移並帶動活塞Μ 卓卜如箭帛iv所示的方向往上移動，此時彈性元件44的 =位彈力驅使第二塞體433上移’且第二塞體433將下氣 室417内的氣體經由流道423擠壓至上氣室416内。 藉由分隔件42的内周面421與活塞43的桿部432之 間的流道423設計，使得義肢膝關節2〇〇由伸直狀態變換 為彎曲狀態時’活塞43的第一塞體431可將上氣室仙内 的氣體經由流道423擠壓至下氣室417内，反之，義肢膝 關節200由彎曲狀態變換為伸直狀態時，活塞43的第二塞 體433可將下氣室417内的氣體經由流道423擠壓至上氣 室416内，因此不需增加第二關節座3的厚度以額外作流 道的設計，藉此以降低製造上的複雜度以及製造的成本。 此外，藉由氣壓所產生的緩衝力，能增加義肢膝關節2〇〇 彎曲及伸直動作時的柔軟度及順暢性。 歸納上述，本實施例的義肢膝關節2〇〇，藉由活塞Μ 的桿部432外徑小於由内周面421所界定出的穿孔422孔 徑，使得分隔件42的内周面421與活塞的桿部432之間界 定出使上、下氣室416、417相連通的流道423，因此義肢 10 M315083 膝關節200由伸直狀態變換為彎曲狀態時，第一塞體43 i 可將上氣室416内的氣體經由流道423擠壓至下氣室417 内，義肢膝關節200由彎曲狀態變換為伸直狀態時，活塞 43的第二塞體433可將下氣室417内的氣體經由流道423 擠壓至上氣室416内，故不需增加第二關節座3的厚度以 額外作流道的設計，藉此以降低製造上的複雜度以及製造 的成本，故確實能達到本新型所訴求之目的。 惟以上所述者’僅為本新型之較佳實施例而已，當不 能以此限定本新型實施之範圍，即大凡依本新型申請專利 範圍及新型說明内容所作之簡單的等效變化與修飾，皆仍 屬本新型專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一般義肢膝關節在一彎曲狀態的一剖視圖； 圖2是本新型義肢膝關節之較佳實施例的一剖視圖， 說明該義肢膝關節在一伸直狀態； 圖3是該較佳實施例的一剖視圖，說明該義肢膝關節 由伸直狀態轉換成一彎曲狀態的過程； 圖4是該較佳實施例的一局部放大圖，說明第—塞體 將上氣室内的氣體經由流道擠壓至下氣室内；及 圖5是該較佳實施例的一剖視圖，說明該義肢膝關節 由彎曲狀態轉換成伸直狀態的過程。 11 M315083The first seat 2 includes a connecting rod U for connecting with the seat body 21 and the shank body 21 connected to the thigh of the prosthetic leg, and the second joint seat 3 is hollow tubular and has a bottom end for The prosthetic leg joints are connected, and the upper and lower ends of the first linkage lever 51 of the linkage mechanism 5 are respectively pivotally connected to the connecting rod 22 of the first: node: and the rear side of the second joint 3, and The upper and lower ends of the interlocking cup 52 are respectively pivotally connected to the front side of the seat body 21 of the first joint seat 2 and the second joint seat 3, so that the prosthetic knee joint 200 can be bent in a straight state (Fig. 2) and - Change between _ 3). #2, 3, and 4, the 'air pressure buffer device 4 is disposed at the second level, that is, the seat 3, and includes a cylindrical base 41 that is engaged in the second joint seat 3, and the knife is disposed on the base. A partition member 42 in the housing space 41, a piston 43 and an elastic member 44. The base 41 has a first seat body 412 that is screwed to the second joint seat 3, and a first seat body 413 'the second body 412, 413 that is screwed to the bottom end of the first seat body 412 The accommodating space is formed by the end wall 414 of the bottom end of the first seat body 412 and the shoulder 415 of the inner wall surface of the second seat body 413 respectively abutting the middle of the outer surface of the partition member 42 and the bottom surface of the knife partition 42 so that the partition member 42 is fixed between the first and second seats 412, 413 and partitions the accommodating space 411 into an upper air chamber 416 and a lower air chamber 417. 8 M315083 The partition member 42 has an inner peripheral surface 42 and a through hole 422 which is defined by the inner peripheral surface 42i to communicate the upper air chamber 416 with the lower air chamber 417. The piston 3 has a bore located in the upper air chamber 416. a first plug body 431, a rod portion 432 extending from the bottom end of the first body 431 and passing through the through hole 422, and a second plug fixed at the bottom end of the rod portion 432 and located in the lower air chamber 417 In the body coffee, the outer diameter of the rod portion 432 is slightly smaller than the diameter of the hole defined by the inner circumferential surface 421, and the elastic member 44 is abutting against the second body milk base at one end: and the second body 4U A compression spring of the bottom wall is provided to provide a weak position of the piston 43. The first plug body 431 of the piston 43 is screwed with a pivoting rod. The disc mechanism 5 further includes a second link 53 which is pivotally connected to the front end of the first linkage rod and the top end of the post. When the first and second joints 3 are transmitted through the first linkage rod 51 and the front linkage rod 52 in the straight, curved shape, and the cymbal, the first linkage rod 5丨 can be driven. The i-spear cup 53 drives the piston 3 The housing 41 of the susceptor 41 reciprocates up and down. When the prosthetic knee joint is in the straightened state, the seat body 24 of the first joint joint 2 faces upward, and the first joint joint 2 is located at the upper chamber of the second joint ^2, the second and second plug bodies 431 of the piston 433 is located in the upper end of the upper gas and you are in the lower end of the lower rolling chamber 417. When the prosthetic knee joint 200 is changed from the extension to the curved state, the first joint base 2 rotates in the direction of the right direction as indicated by the arrow ι and the top surface of the seat body 21 faces rearward, and simultaneously drives the linkage rod 51 and the front linkage. The top end of the rod 52 is inclined forward so that the first:= rod 53 moves downward and drives the piston 43 to move downward in the direction indicated by the arrow η, at which time the first, first-compressed upper air chamber 416 of the piston 43 and the lower air The chamber 417, and the first plugs 431, 433 and the second plug 431 respectively squeeze the gas in the upper air chamber M315083 416 through the flow passage 423 defined between the inner circumferential surface 421 of the partition 42 and the rod portion 432. In the lower air chamber 417, the second plug body 433 compresses and deforms the elastic member 44 to accumulate the return elastic force. - As shown in Fig. 2 and Fig. 5, when the prosthetic knee joint 2 is returned from the bent state to the straightened state, the first joint seat 2 is rotated toward the hour hand as indicated by the arrow m and simultaneously drives the first The top end of the linkage rod 51 and the front linkage rod 倾斜 is inclined rearward, so that the second linkage rod 53 moves up and moves the piston 卓 卓 卓 upwards in the direction indicated by the arrow iv, at which time the elastic force of the elastic member 44 is driven. The second plug body 433 is moved up' and the second plug body 433 presses the gas in the lower air chamber 417 into the upper air chamber 416 via the flow path 423. The first plug body 431 of the piston 43 is designed by the flow passage 423 between the inner peripheral surface 421 of the partition member 42 and the rod portion 432 of the piston 43 so that the prosthetic knee joint 2 is changed from the straightened state to the bent state. The gas in the upper air chamber can be squeezed into the lower air chamber 417 via the flow passage 423. Conversely, when the prosthetic knee joint 200 is changed from the curved state to the straightened state, the second plug body 433 of the piston 43 can be deflated. The gas in the chamber 417 is squeezed into the upper gas chamber 416 via the flow passage 423, so that it is not necessary to increase the thickness of the second joint seat 3 to additionally design the flow passage, thereby reducing manufacturing complexity and manufacturing cost. In addition, the cushioning force generated by the air pressure can increase the softness and smoothness of the prosthetic knee joint during bending and stretching. In summary, the prosthetic knee joint of the present embodiment has an outer diameter of the rod portion 432 of the piston bore smaller than the diameter of the perforation 422 defined by the inner peripheral surface 421, so that the inner peripheral surface 421 of the partition member 42 and the piston are The flow path 423 connecting the upper and lower air chambers 416 and 417 is defined between the rod portions 432. Therefore, when the prosthetic limb 10 M315083 is bent from the straightened state to the bent state, the first plug body 43 i can be ventilated. The gas in the chamber 416 is pressed into the lower air chamber 417 via the flow passage 423. When the prosthetic knee joint 200 is changed from the curved state to the straightened state, the second plug body 433 of the piston 43 can pass the gas in the lower air chamber 417. The flow passage 423 is pressed into the upper air chamber 416, so that it is not necessary to increase the thickness of the second joint base 3 to additionally design the flow passage, thereby reducing the manufacturing complexity and the manufacturing cost, so that the present invention can be achieved. The purpose of the claim. However, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made by the novel application scope and the novel description. All remain within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a knee joint of a general prosthetic limb in a bent state; FIG. 2 is a cross-sectional view showing a preferred embodiment of the prosthetic knee joint of the present invention, illustrating the knee joint of the prosthetic limb in a straightened state; 3 is a cross-sectional view of the preferred embodiment, illustrating a process in which the prosthetic knee joint is converted from a straightened state to a curved state; FIG. 4 is a partially enlarged view of the preferred embodiment, illustrating that the first plug body will be in the upper air chamber The gas is squeezed into the lower plenum through the flow path; and Fig. 5 is a cross-sectional view of the preferred embodiment illustrating the process of converting the prosthetic knee joint from a bent state to a straightened state. 11 M315083
【主要元件符號說明】 200 .......義肢膝關節 2 ..........第一關節座 21.........座體 22.........連接桿 3 ..........第二關節座 4 ..........氣壓緩衝裝置 41 .........基座 411 .......容置空間 412 .......第一座體 413 .......第二座體 414 .......端壁 415 .......肩部 416 .......上氣室 417 .......下氣室 42 .........分隔件 421 .......内周面 422 .......穿孔 423 .......流道 43 .........活塞 431 .......第一塞體 432 .......桿部 433 .......第二塞體 434……樞接桿 44 .........彈性元件 5 ..........連動機構 51 .........第一連動桿 52 .........前連動桿 53 .........第二連動桿 I、II ••…箭頭 III、IV··箭頭 12[Main component symbol description] 200 ....... Prosthetic knee joint 2 .......... First joint seat 21......... Seat 22..... .... Connecting rod 3 .......... second joint seat 4 ..... air pressure buffer device 41 ......... base 411 .. ..... accommodation space 412 .... first seat 413 .... second seat 414 .... end wall 415 ....... Shoulder 416 .... upper air chamber 417 .... lower air chamber 42 ... ... partition 421 ... ... inner circumferential surface 422 .. .....perforation 423 .......flow path 43 ......... piston 431 .... first plug body 432 ....... rod portion 433 . . . second plug 434 ... pivoting rod 44 ... ... elastic element 5 ..... linkage mechanism 51 .... .. first linkage rod 52 ......... front linkage rod 53 ......... second linkage rod I, II ••... arrow III, IV·· arrow 12