201144591 六、發明說明： 【發明所屬之技術領域】 ㈣t曰i係有關於—種風車葉片結構，尤指一種處於背風狀 =會自動縮小迎風面積，提高風力_效率之風車葉片結 【先前技術】 弘碎ί 2古以來即是一種最廉價的機械驅動力，在環保意識 ΐ，更疋—種各界趨之若鶩之綠能動力源。是以如 ° : 轉提f至最高’更是各家爭相研究之技術領域。 能ττ奋η ί風車葉片通常採固定型態之設計，當其位於迎風狀 ί眛力作用而帶動風車之主軸轉，然當其處於背風狀 ^作日因為風力之作用而產生反作用力，降低迎風葉片 到極J?、降低風車之驅動效能，而無法將風力之作用發揮 發日狀75針對上述風車⑼之缺失，本著鎮而不 常期求精之目的’積極不斷的加以研究改良，並經 电期之努力與試驗，終於開發設計出本發明。 【發明内容】 背風目的’在於解決上述的問題而提供一種處於 夺 小迎風面積’提高風力利用效率之風車葉 為達上述目的，本發明主要係包括一主轴，該主 知係水平固設於風車之旋轉軸上，該主轴 7—，該上弧形槽 ，七下擒止部以及-上擔止部，其中’該下擔止部 5夾角係大於〇度，而該上擔止部與水平面 上 〇度；該下弧形槽亦形成有一下擋止部 上、丄2 令’並可沿上弧形槽作擺動之上葉片，該 201144591 槽中，，並可沿下弧形槽作擺動之上葉片。 搖二明處於迎風面時’該上葉片因風力之作用而w低 擺，並貝占抵於上播止部，如此即可搭配 向上偏 主轴來驅動風車之旋轉轴轉動。當 i 並透過 用”本身所^:之重力而向τ擺動，並 ^作 === 風阻避免處於背風狀態之以處= Ιίϊ作功，可大幅提升風力之職效能。 本發明之上述及其他目的與優點，不難從下述 例之誶細說明與附圖中，麟深入了解。 、用實知 同，===些=’或另件之安排上容許有所不 於附圖列’則於本說明書中，予以詳細說明’並 【實施方式】 圖所i發關於—種風車葉片結構，請參閱如第—至第二 ΐ要係包含有一主轴（1 0) ’該主軸（1 〇)之 知係水平固設於風車之旋轉轴（i 〇 〇)上；一上葉片 一山以及一下葉3 0)係分別裂設於該主轴（1 〇、）之第 —° «亥主轴（1 0 )之第二端係橫向形成有一上弧形槽（丄1 ) 形槽（1 2)。該上弧形槽（11)之底緣與上緣 ϊ: ί有—下擔止部（111)以及—上擋止部（1 1 2 )， 二η存〜下擔止部（111)與水平面之夹角（01)係不小 ⑽，而該上播止部（112)與水平面之夾角（0 2 )俜 :大於9 0度。該下弧形槽(丄2 )具有一下播工丄G ;糸 下弧形槽（1 2 )之下擔止部（1 2 1 )係垂直於水平面。 該上葉片（2 0)之一側係裝設於上弧形槽（11)中， 3沿上弧形槽（11)作擺動；而該下葉片（3 0)之-側 又於下弧形槽（12)中，並可沿下弧形槽（χ 2)作擺 動0 201144591 風時，該上葉片（2〇)因風力之作用 而向上偏擺，並貼抵於上擋止部（n用 職底於下弧形槽（！ 2 ) 】2 )而下某月(3 0 ) iSiHS 士 Π f下播止部α 11)，而下葉片（3 〇)以 供® ’朝向上葉片（2◦)偏擺，如此即可於背風時，: =阻避免處於背風狀態之葉片干涉處於迎風狀#寺$ 作功，可大幅提升風力之運用效能。 葉片 胸於垂直轴式水平旋轉風扇葉片，隨風力方向，自動 增加^^ s積，自動減小、、背風„面積，以增加發電效^動 虽風力風速制啟賴顧歧_，'、 m ^'n^90 ^ ： =時扇貪片，受動力及風力吹襲自然閉合至最小面 積’ t時發電機域左右_，因钱_極大差異，扭= 不相同，顧向單邊施加扭力，使得旋轉 效加、 本發述實f狀揭示伽以_本發明，並非用以曰二 ，。故舉凡數值之變更或等效元件之置換仍應隸屬本發明 詳細說明’可使熟知本項㈣者明瞭本發明的確可 J成二 =並且在同，程或產品中均未見有類似之發 、實待口專利法之規定’爰依法倶文提出專利申請。 201144591 【圖式簡單說明】 第一圖係本發明之使用狀態圖。 第二圖係本發明之動作示意圖。 【主要元件符號說明】 10 0旋轉軸 11上弧形槽 112上擋止部 121下擋止部 3 0下葉片 Θ 2夾角 1 0主軸 111下擋止部 12下弧形槽 2 0上葉片 0 1夾角201144591 VI. Description of the invention: [Technical field to which the invention belongs] (4) The t曰i system has a structure of a windmill blade, especially a type of windmill blade that is in the leeward shape, which will automatically reduce the windward area and improve the wind force _ efficiency. [Prior Art] Hongchuang ί 2 has been the cheapest mechanical driving force since ancient times, and it is more ambiguous in environmental protection, and it is a source of green energy that is popular in all walks of life. It is the technical field that each family is scrambling to study, such as °: transfer to the highest level. The windmill blade is usually designed with a fixed type. When it is located in the windward direction, it drives the main shaft of the windmill. However, when it is in the leeward shape, the reaction force is generated due to the action of the wind. Windward blades to the extreme J?, reduce the driving efficiency of the windmill, and can not play the role of the wind in the shape of the wind 75 (9) for the lack of the above-mentioned windmill (9), in the town and not the regular purpose of the purpose of 'actively research and improvement, And through the efforts and experiments of the electricity period, the invention was finally developed and designed. SUMMARY OF THE INVENTION The purpose of the leeward is to solve the above problems and provide a windmill blade that is capable of improving the wind utilization efficiency in the small windward area. The present invention mainly includes a main shaft, and the main knowledge system is horizontally fixed to the windmill. On the rotating shaft, the main shaft 7-, the upper arcuate groove, the seven lower jaw portion and the upper upper supporting portion, wherein the lower supporting portion 5 has an angle greater than a twist, and the upper supporting portion and the horizontal plane The lower curved groove is also formed with a lower stop portion, a 丄2 command' and can be swung upward along the upper curved groove, the 201144591 groove, and can swing along the lower curved groove Above the blade. When Shaming Erming is in the windward side, the upper blade is low-swinged by the action of the wind, and the shell is occupied by the upper broadcasting portion, so that the upwardly-oriented main shaft can be used to drive the rotating shaft of the windmill to rotate. When i oscillates to τ by using the gravity of "self": and ^== wind resistance to avoid being in the leeward state = Ι ϊ ϊ , , , , , , , , , , , , , , , , , , , 。 。 。 。 。 。 。 。 。 。 。 。 Purpose and advantages, it is not difficult to understand from the following examples and the drawings, Lin understands. In fact, with the same knowledge, === some = ' or the arrangement of the other parts is allowed to be in the drawing column' In the present specification, it will be described in detail. [Embodiment] As shown in the figure, the structure of the windmill blade is as described in the first to the second main line including a spindle (1 0) 'the spindle (1 〇 The knowledge is fixed horizontally on the rotating shaft (i 〇〇) of the windmill; one upper blade and one lower leaf 30) are respectively ruptured on the main axis (1 〇,) - ° «Hai main axis ( The second end of the first end is formed with an upper arcuate groove (丄1)-shaped groove (12). The bottom edge and the upper edge of the upper arcuate groove (11) are: 111) and - the upper stop portion (1 1 2 ), the angle between the second η 〜 〜 lower support portion (111) and the horizontal plane (01) is not small (10), and the upper broadcast portion (112) ) The angle with the horizontal plane (0 2 )俜: greater than 90 degrees. The lower curved groove (丄2) has the next broadcast 丄G; the lower curved groove (1 2 ) under the support (1 2 1 Is perpendicular to the horizontal plane. One side of the upper blade (20) is mounted in the upper arcuate groove (11), 3 is swung along the upper arcuate groove (11); and the lower blade (30) - The side is in the lower arc groove (12) and can be oscillated along the lower arc groove (χ 2). When the wind is 201144591, the upper blade (2〇) is deflected upward due to the action of the wind and is attached. On the upper stop (n is used in the lower arc groove (! 2) 】 2) and the next month (3 0) iSiHS 士Π f under the broadcast part α 11), and the lower blade (3 〇) For the 'direction of the blade (2◦) yaw, so that when the leeward,: = resistance to avoid the blade interference in the leeward state in the windward #寺$ work, can greatly enhance the performance of the wind. The vertical axis type horizontally rotates the fan blade, and automatically increases the ^^ s product with the wind direction, automatically reduces, and leeward „ area to increase the power generation effect. Although the wind speed method is dependent on Gu Qi _, ', m ^' n^90 ^ : = when the fan is greedy, The power and wind are naturally closed to the minimum area 't when the generator domain is left and right _, because of the huge difference of money _, the twist = not the same, the twisting force is applied to the unilateral side, so that the rotation effect is added, and the present invention is revealed. The invention is not intended to be used in the present invention. Therefore, any change in value or replacement of equivalent elements should still be subject to the detailed description of the present invention. It can be understood that the person skilled in the art (4) can understand that the present invention can be made into two = and no similar hair is found in the same process or product. The provisions of the Patent Law of the People's Republic of China's patent application. 201144591 [Simplified description of the drawings] The first figure is a usage state diagram of the present invention. The second figure is a schematic diagram of the action of the present invention. [Main component symbol description] 10 0 Rotary shaft 11 upper curved groove 112 upper stop portion 121 lower stop portion 3 lower blade Θ 2 angle 1 0 main shaft 111 lower stop portion 12 lower curved groove 2 0 upper blade 0 1 angle