M361338 辦雖日S 五、新型說明： 【新型所屬之技術領域】 本創作是有關於輪椅之剎車改良結構，特別是指一種 • 適用於輪椅且制動靈敏、可降低輪胎磨耗的剎車結構。 【先前技術】 傳統的輪椅及其剎車結構，常見者有如第1圖所示， # 其輪椅4於主要於供坐靠的椅形結構外，另包括一對推移 . 把手4 3及一組可轉動以改變滾動方向的轉向車輪41、 - 一組具有固定滾動方向的定向車輪4 2，而該輪椅4的剎 車結構則係以一刹車推桿5中間部位樞設於定向車輪4 2 旁側，該刹車推桿5 —端係以一握把51延伸至輪椅4的 座墊旁側，剎車推桿5另一端則樞接於一連動架5 2的中 間部位，且該連動架5 2係延伸至定向車輪4 2旁側並結 φ 合一摩擦件5 3 (來令片），而連動架5 2的另端則樞接 ' 於輪椅4上，同時一設置於該推移把手4 3旁的剎車推桿 . 5 4可經由一剎車線5 5連接於連動架5 2臨摩擦件5 3 . 的一端旁側。 於實際操作時，推動輪椅者手握該推移把手4 3時， 其可利用刹車推桿5 4經由剎車線5 5驅動連動架5 2樞 轉，使該摩擦件5 3 (來令片）直接貼壓於定向車輪4 2 表面，藉以形成摩擦而阻礙該定向車輪4 2之滾動，而可 3 M361338 ^nl〇nm, 達到剎車的功效；再者，乘坐輪椅者，其可直接以手持握 該握把51並推動該連動架5 2，使連動架5 2可連動摩 •擦件5 3 (來令片）貼壓於定向車輪4 2表面，亦可達到 相同的剎車效果。 然而，上述結構其於實際應用時有'_____F列缺點： _ 1 由於其係利用摩擦件5 3 (來令片）直接觸壓於定向車 輪4 2表面，以產生摩擦剎車效果，因此其摩擦件5 3 Φ (來令片）於接觸時會產生極大的振動與跳動，不但會 . 造成輪椅乘坐者的不適，且影響剎車操作的順暢性。 - 2_由於摩擦件5 3 (來令片）係直接摩擦於定向車輪4 2 表面，因此容易造成定向車輪4 2快速磨損，增加使用 成本。 3_由於摩擦件5 3 (來令片）與固定車輪4 2的接觸部位 係裸露在外，容易因定向車輪4 2表面不潔（水份、油 φ 污或砂灰）而造成摩擦力效減損，影響其剎車效果。 有鑑於習見的輪椅剎車結構有上述缺點，創作人乃針 . 對該些缺點硏究改進之道，終於有本創作產生。 【新型内容】 本創作的主要目的在於提供一種輪椅之刹車改良結構 ，其可有效減緩剎車時的輪胎表面磨損，降低使用成本。 本創作的另一目的在於提供______-種輪椅之刹車改良結構 4 M361338 感日‘充 ，其不會因輪胎表面不潔而影響整體的剎車效果，可卻保 使用安全。 本創作的又一目的在於提供一種輪椅之剎車改良結構 ，其於剎車時不會產生異常的振動與跳動，可確保乘坐的 舒適性。 至於本創作之詳細構造、應用原理、作用與功效，則 參照下列依附圖所作之說明即可得到完全的瞭解： 【實施方式】 請參第2、3圖所示，可知本創作主要包括：鼓剎殼 罩1、連動件2及活動輪轂3等元件，其中該鼓剎殼罩1 外旁側設有一延伸部13，於該延伸部13內設有一固定 孔131，而於鼓剎殼罩1內部設有一旁側開口的容置空 間1 1，於該容置空間1 1內中央設有一軸孔1 1 1，且 於容置空間11內周側環設有一彈性弧片12，該彈性弧 片12的一端係樞設於一固定柱12 2上，彈性弧片12 的另一端則爲一活動端，同時該彈性弧片12的內側並結 合一剎車來令121，另於該鼓剎殼罩1周緣設有至少一 調整螺栓14可抵頂於彈性弧片12外側，連動件2係以 中間部位樞設於該延伸部13內，其一端係樞設於該彈性 弧片1 2的活動端，連動件2的另·______-端則設有一長孔2 2 ，且以一彈性元件21支撐該連動件2，使其保持連動彈 5 年午月卜曰 M361338 性弧片12向外擴張的彈性，而該長孔2 2則可供一結合 螺栓2 3貫穿伸入並螺合一結合螺帽2 4，而於該結合螺 栓2 3上另橫設一貫孔2 31，以供連結一刹車線5 5， 活動輪轂3係結合於輪椅4的定向車輪4 2—側中央，且 係由開口伸入該鼓剎殼罩1的容置空間11內，於該定向 車輪4 2中央設有一具軸孔4 21之軸承4 2 2。 組合時，利用一樞軸4 2 3依序貫穿軸承4 2 2之軸 孔4 21、一墊塊4 2 4 (視情形需要）及鼓剎殼罩1之 軸孔11 1後，再結合於輪椅4旁側，而該鼓剎殼罩1則 係利用一固定元件（未繪出）貫穿固定孔131固定於輪 椅4旁側，同時，連動件2端部可經由結合螺栓2 3、刹 車線5 5連結於一設於輪椅4後方推移把手4 3旁側的剎 車推桿5 4。 請另參第4、5圖，可知於一般狀態時，利用該彈性 元件21支撐該連動件2，配合彈性弧片12本身的擴張 彈性，可使剎車來令121保持與活動輪轂3分離的狀態 (如第4圖所示），此時該定向車輪4 2可自由轉動而無 任何阻礙，輪椅4亦可自由活動；而當推移輪椅4者按握 該車推桿剎5 4時，經由剎車線5 5可驅動該連動件2帶 動彈性弧片12向內收束，使該剎車來令121可夾套於 活動輪轂3外周側（如第5圖所示），此時定向車輪4 2 之轉動阻力增加，以達到降低輪椅4移行速度甚至於停止 M361338M361338 Although the day S, the new description: [New technical field] This creation is about the brake structure of the wheelchair, especially a brake structure that is suitable for wheelchairs and is sensitive to brakes and can reduce tire wear. [Prior Art] A conventional wheelchair and its brake structure are as shown in Fig. 1, and the wheelchair 4 is mainly used for a chair-shaped structure for seating, and includes a pair of shifts. The handle 4 3 and a set can be used. a steering wheel 41 that rotates to change the rolling direction, a set of directional wheels 42 having a fixed rolling direction, and a brake structure of the wheelchair 4 is pivoted to the side of the directional wheel 4 2 with a middle portion of the brake pusher 5 The brake push rod 5 is extended to the side of the seat cushion of the wheelchair 4 by a grip 51, and the other end of the brake push rod 5 is pivotally connected to an intermediate portion of the link frame 52, and the link frame 5 2 is extended. To the side of the directional wheel 4 2 and φ a friction member 5 3 (to make a piece), and the other end of the linkage 5 2 is pivotally connected to the wheelchair 4 while being disposed beside the pushing handle 4 3 The brake push rod 5 4 can be connected to the side of the end of the friction piece 5 3 . via the brake wire 5 5 . In actual operation, when pushing the push handle 4 3 by the wheelchair, the brake push rod 5 4 can be used to drive the linkage frame 5 2 via the brake wire 5 5 to make the friction member 5 3 directly Pressing on the surface of the directional wheel 4 2, thereby forming friction to hinder the rolling of the directional wheel 42, and 3 M361338 ^nl 〇 nm, to achieve the effect of braking; further, in a wheelchair, it can be held directly by hand The grip 51 pushes the linkage frame 5 2 so that the linkage frame 52 can be attached to the surface of the directional wheel 42 by interlocking the friction member 5 3 to achieve the same braking effect. However, the above structure has the disadvantage of '_____F column in practical application: _ 1 because it uses the friction member 5 3 (to make the sheet) to directly contact the surface of the directional wheel 42 to generate a friction braking effect, so the friction member thereof 5 3 Φ (Let the film) will produce great vibration and jitter when it comes into contact, which will not only cause discomfort to the wheelchair occupants, but also affect the smooth operation of the brakes. - 2_ Since the friction member 5 3 is directly rubbed against the surface of the directional wheel 4 2, it is easy to cause rapid wear of the directional wheel 42 and increase the use cost. 3_Because the contact portion of the friction member 5 3 (the order piece) and the fixed wheel 42 is exposed, it is easy to cause frictional damage due to the unclean surface of the directional wheel 42 (moisture, oil φ stain or sand ash). Affect the braking effect. In view of the above-mentioned shortcomings of the wheelchair brake structure, the creator has made a point. The improvement of these shortcomings has finally resulted in this creation. [New content] The main purpose of this creation is to provide a brake-improved structure for wheelchairs, which can effectively reduce tire surface wear during braking and reduce the cost of use. Another purpose of this creation is to provide ______-a brake-improved structure for wheelchairs. 4 M361338 Sensation ‘charge, which does not affect the overall braking effect due to the unclean surface of the tire, but it is safe to use. Another object of the present invention is to provide a brake-improved structure for a wheelchair that does not generate abnormal vibration and jitter when braking, thereby ensuring ride comfort. As for the detailed structure, application principle, function and effect of this creation, it can be fully understood by referring to the following description according to the drawings: [Embodiment] Please refer to Figures 2 and 3, it can be seen that the creation mainly includes: drum The brake cover 1 , the linkage 2 and the movable hub 3 and the like, wherein the outer side of the drum cover 1 is provided with an extension 13 , and a fixing hole 131 is defined in the extension 13 , and the drum cover 1 is provided An inner side of the accommodating space 11 is provided with a shaft hole 1 1 1 , and a resilient arc 12 is disposed on the inner side of the accommodating space 11 . One end of the piece 12 is pivotally mounted on a fixed post 12 2 , and the other end of the elastic piece 12 is a movable end, and the inner side of the elastic piece 12 is combined with a brake to make 121, and the drum cover is further At least one adjusting bolt 14 is disposed on the outer periphery of the cover 1 to abut against the outer side of the elastic arc piece 12. The linking member 2 is pivotally disposed in the extending portion 13 at an intermediate portion thereof, and one end thereof is pivotally disposed on the movable portion of the elastic curved piece 12. At the end, the other ______- end of the linking member 2 is provided with a long hole 2 2 and an elastic member 2 1 Supporting the linking member 2 to maintain the elasticity of the outward expansion of the M361338 arc piece 12 for 5 years, and the long hole 2 2 can be inserted and screwed into a coupling bolt 2 3 In combination with the nut 24, a matching hole 2 31 is further disposed on the coupling bolt 2 3 for connecting a brake wire 5 5 , and the movable hub 3 is coupled to the center of the directional wheel 42 2 of the wheelchair 4 A bearing 4 2 2 having a shaft hole 41 is disposed in the center of the directional wheel 42 in the accommodating space 11 of the drum cover 1 . When combined, a pivot shaft 4 2 3 is sequentially passed through the shaft hole 4 21 of the bearing 4 2 2 , a spacer 4 2 4 (as occasion demands) and the shaft hole 11 1 of the drum brake cover 1 , and then combined with The side of the wheelchair 4 is fixed to the side of the wheelchair 4 through a fixing hole 131 by a fixing member (not shown), and the end of the linking member 2 can be connected via the bolt 2 3 and the brake line. 5 5 is connected to a brake pusher 5 4 which is disposed on the side of the wheelchair 4 and is moved to the side of the handle 4 3 . Referring to Figures 4 and 5, it can be seen that in the normal state, the linkage member 2 is supported by the elastic member 21, and the expansion elasticity of the elastic arc piece 12 itself is matched, so that the brake can be kept in a state of being separated from the movable hub 3. (As shown in Fig. 4), at this time, the directional wheel 42 can be freely rotated without any hindrance, and the wheelchair 4 can also move freely; and when the wheelchair 4 is pushed by the push rod brake 5 4, via the brake The wire 5 5 can drive the linkage member 2 to bring the elastic arc piece 12 inwardly, so that the brake can be clamped on the outer peripheral side of the movable hub 3 (as shown in FIG. 5), and the wheel 4 4 is oriented at this time. Increased rotational resistance to reduce the speed of wheelchair 4 travel and even stop M361338
之功效。 由上所述可知，本創作輪椅之剎車改良結構具有乘坐 舒適、制動靈敏且可降低輪胎磨耗的功效，確已符合專利 的新穎性及進步性要件。 惟以上所述者，僅爲本創作的一較佳實施例而已，並 非用來限定本創作實施的範圍。即凡依本創作申請專利範 圍所作的均等變化與修飾，皆爲本創作專利範圍所涵蓋The effect. It can be seen from the above that the modified brake structure of the present wheelchair has the advantages of comfortable ride, sensitive braking and reduced tire wear, and has indeed met the novelty and progressive requirements of the patent. 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 equal changes and modifications made by the patent application scope of this creation are covered by the scope of the creation patent.
【圖式簡單說明】 第1圖係習見輪椅及其剎車結構示意圖。 第2圖係本創作的構造分解圖。 第3圖係本創作與輪椅結合後的整體結構示意圖。 第4圖係本創作之操作動作圖(一）。 第5圖係本創作之操作動作圖(二）。 【主要元件符號說明】 111、421...軸孔 122.. .固定柱 14.. ..調整螺栓 22.…長孔 24…·結合螺帽 41....轉向車輪 1.. ...鼓剎殼罩 11....容置空間 12.. ..彈性弧片 121…剎車來令 13.. ..延伸部 131...固定孔 2.. ...連動件 21....彈性元件 23…結合螺栓 231…貫孔 3.....活動輪轂 4.....輪椅 M361338 42.. ..定向車輪 422…軸承 424.. .墊塊 43·...推移把手 51….握把 52…連動架 54.. ..剎車推桿 55....剎車線 Μ月/0日 423.. .樞軸 5.. ...剎車推桿 53….摩擦件 修正補充1[Simple description of the diagram] Figure 1 shows the schematic diagram of the wheelchair and its brake structure. Figure 2 is a structural exploded view of the creation. Figure 3 is a schematic diagram of the overall structure of the creation and the combination of the wheelchair. Figure 4 is the operation diagram of this creation (1). Figure 5 is the operation diagram of this creation (2). [Description of main component symbols] 111, 421... Shaft hole 122.. Fixing post 14... Adjusting bolts 22.... Long hole 24...·Combined with nut 41....Steering wheel 1.. .. Drum brake cover 11.... accommodation space 12..... elastic blade 121...brake to make 13... extension portion 131...fixing hole 2... linkage member 21.. ..Resilience element 23...in combination with bolt 231...through hole 3.....active hub 4.....wheelchair M361338 42.....directional wheel 422...bearing 424...block 43·...shift Handle 51....grip 52...linking frame 54...brake pusher 55....brake line Μ月/0 day 423.. .Pivot 5.....brake pusher 53....friction Amendment 1