M381.990 五、新型說明： 【新型所屬之技術領域】 本創作係一種省力型轉轴結構，尤指—種左右邊轉軸的扭 簧可共用，且扭簧可正反向雙向順壓的轉軸結構，適用於掀蓋 式電子裝置者。 【先前技術】 一般用於掀蓋式電子產品的轉轴，如筆記型電腦的轉軸， 係裝设於螢幕與本體之間，使螢幕可相對於本體開啟或蓋合。 其中，軸向摩擦式的轉轴可藉由調整螺帽壓縮彈性元件，以改 變轉軸的摩擦扭力，並使轉軸具有停滯定位的效果。然而，轉 軸在旋轉的過程中摩擦扭力皆相同，為使轉轴具有停滯定位的 效果，反而令開啟時難以開啟，尤其是力量較小的女性或孩童 更難以操作。 為解決上述問題，本案申請人所擁有的中華民國公告第 M332353賴型專利「具省力功能之轉軸結構」揭示一種開啟 時可提供-輔助力以易於開啟的轉軸結構。其包含—基座、一 穿設於基座的拖軸’樞軸上套接一扭簧，以及一可與樞轴同步 轉動的轉動片，且該扭簀的兩端分別固定於基座與轉動片上。 該扭簧於縣閉合時f能’開啟轉能，❿職姉及轉動片 施予一辅助力而得以輕鬆的開啟。 由於電子產1^轉純f讀獅設於左右兩邊 ，且左邊 扭簧和右邊扭簧魄向^同，如此才能在閉合時皆順向壓縮， 3 M381.990 因j簧無法左右共用’常财關題而造成組裝錯誤。且扭 簧是單向順壓，即閉合時壓縮蓄能，而開啟時釋能’具有開輕 關重的效果’但是，當開啟至後方約135〜⑽度時轉轴即益 法支撐住f幕而使螢幕往下掉，因此仍有改_空間。、 另外，本案申請人所擁有的中華民國公告第M293361號新 里專利省力型轉軸結構」，亦揭示一種開啟時可提供一輔助M381.990 V. New type description: [New technical field] This creation is a kind of labor-saving shaft structure, especially the torsion spring of the left and right side shafts can be shared, and the torsion spring can be rotated in the forward and reverse directions. Structure, suitable for clamshell electronic devices. [Prior Art] A rotating shaft generally used for a clamshell electronic product, such as a rotating shaft of a notebook computer, is installed between the screen and the body so that the screen can be opened or closed with respect to the body. Wherein, the axial friction type rotating shaft can compress the elastic element by adjusting the nut to change the friction torque of the rotating shaft, and the rotating shaft has the effect of stagnant positioning. However, the frictional torque is the same during the rotation of the shaft. In order to make the shaft have a stagnant positioning effect, it is difficult to open when it is opened, especially for women or children with less strength. In order to solve the above problems, the applicant of the Republic of China's Republic of China Announcement No. M332353 patent "The shaft structure with labor saving function" discloses a shaft structure that can provide an auxiliary force to open easily when opened. The utility model comprises a base, a towing spring disposed on the pivot shaft of the base, and a rotating spring, and a rotating piece rotatable in synchronization with the pivot, wherein the two ends of the twisting are respectively fixed to the base and the rotating base Turn the film on. When the torsion spring is closed in the county, the energy can be turned on, and the service and the rotating piece can be easily opened by applying an auxiliary force. Since the electronic product 1^ turns pure f reading lion is set on the left and right sides, and the left torsion spring and the right torsion spring 魄 ^, so that they can be compressed in the direction of closure, 3 M381.990 can not be shared by the j spring Financial problems caused assembly errors. And the torsion spring is a one-way pressure, that is, the compression energy storage when closed, and the release energy when opening is 'having the effect of opening the light weight'. However, when the opening is about 135~(10) degrees to the rear, the shaft is supported by the utility method. The screen caused the screen to fall down, so there is still room for change. In addition, the Republic of China Announcement No. M293361, the new patented labor-saving shaft structure owned by the applicant of the case, also reveals an auxiliary when it is opened.
力以易於開啟的轉軸結構。其結構可使單旋向的扭菩可達到雙 向施出辅助力的效果，賴啟觸歸可輕鬆操作。缺而1 轉軸的主架體包含了L型的主架片及[型的輔架片而佔據較 多空間，在空間不糾情況下，此—結構即不_，而有必要 尋求其他的解決方式。 【新型内容】The force is an easy-to-open shaft structure. Its structure enables the single-rotation twist to achieve the effect of applying the auxiliary force in both directions, and Lai Kai can easily operate. The main frame of the lack of 1 shaft includes the L-shaped main frame and the [type of the auxiliary frame and occupy more space. In the case of no space correction, this structure is not _, and it is necessary to seek other solutions. the way. [New content]
本創作的主要目的，即在提供—種省力型轉軸結構，其左 邊轉軸的扭簧旋向與右邊熱的扭魏向是相同的，因此，扭 簧可以左右共用，可避免組裝錯誤’使生產效率提高。 本創作的另—目的，係在提供—種省力雜軸結構，其扭 簧可以正反向皆順向壓縮’使轉轴具有開輕關重的效果之外， 當開啟至後方時，可支撐住蔡蓋拽A & 牙㈣I避免螢幕往後掉而導致撞擊 損壞影響產品壽命，並可增加使㈣方便性。 本創作的再-目的’係在提供一種省力型轉轴結構，藉由 軸套固定於支架上，與支架共同做為扭簧_的止擋部，使轉 軸達到前述的目的之外’亦可減少佔用空間以解決空間不足 4 M381990 的問題。 為達上述目的’本創作省力型轉轴結構所採取的技術手段 係包含： 支架’係於一柩接部設一樞接孔，該支架並設有一止擔 部。 一心轴’以一非圓形的限制軸段穿設於該樞接孔，該心軸 上一體成型設有一凸出的第一轉動片。The main purpose of this creation is to provide a labor-saving shaft structure. The torsion spring rotation of the left shaft is the same as the hot twist direction of the right side. Therefore, the torsion spring can be shared left and right to avoid assembly errors. to raise efficiency. The other purpose of this creation is to provide a kind of labor-saving miscellaneous shaft structure, the torsion spring can be compressed in both forward and reverse directions, so that the shaft has the effect of opening and closing the weight, and when it is opened to the rear, it can support Staying in Cai Gai A & Teeth (4) I avoid the screen falling back and causing impact damage to affect product life, and can increase (4) convenience. The re-purpose of this creation is to provide a labor-saving shaft structure, which is fixed on the bracket by the sleeve, and together with the bracket as a stop portion of the torsion spring, so that the shaft can achieve the aforementioned purpose. Reduce the footprint to solve the problem of space shortage 4 M381990. In order to achieve the above objectives, the technical means adopted by the present invention is to provide a pivoting hole in a splicing portion, and the bracket is provided with a stopping portion. A mandrel is disposed in the pivot hole by a non-circular limiting shaft segment, and the mandrel is integrally formed with a protruding first rotating piece.
一軸套，套設於該心軸上，該軸套的一端固定於該支架， 而另一端設有一止擂部》 一扭簧，套設於該軸套，該扭簧的第一端活動抵接於該軸 套的止擒部，並可受該第—轉動片推麵縮，雜簧的第二端 則活動抵接於該支架的止擋部。a sleeve sleeve is sleeved on the mandrel, one end of the sleeve is fixed to the bracket, and the other end is provided with a stop portion, a torsion spring, sleeved on the sleeve, and the first end of the torsion spring is movable The damper portion of the bushing is connected to the damper portion of the sleeve, and the second end of the fuse spring is movably abutted against the stopping portion of the bracket.
第-轉動片，結合於該心軸上，並與該心抽同步作動， 其具有-凸部，該扭簧的第二端可受該凸部推動壓縮。 彈m套設於該叫上，且糾财端設—迫緊元 度往前閉合時，㈣㈣ 為釋放狀態，螢幕 由…爐 第一端被軸套的止擋部止檔，而第二端 繼，罝有::第二轉動片凸部往前推動，而使扭簧往前順向壓 開啟時有螢幕閉合時自動往下掉的效㈣ 放，而私凸部轉動離開扭簧的第二端’挺菁釋 開啟嶋力，科_，崎力猶的效果 5 从螢幕由9〇度往後開啟，扭簧的第二端被止擒於支架的 止擔部’而第—端被心轴的第—轉動片往後推動，使扭簧往後 順向壓縮’具有防止螢幕開啟至後方會_往下掉的效果。因 此，藉由扭簧可雙向順壓，使轉軸可以達到前述功效。 再者’電子產品的左雜減右邊轉軸通常為對稱設置， 但由於扭簧兩端皆設有止卿與獅y，因此，扭簧可以左右 共用’即左邊扭簧的旋向與右邊扭簧的旋向相同，如此可避免 組裝錯誤，提高生產效率。 本創作省力型轉軸結構所採取的另一技術手段係包含： 一支架，係於一樞接部設一樞接孔，該支架並設有一止擋 部。 一心軸’以一非圓形的限制軸段穿設於該樞接孔。 轴套，套設於該心軸上，該軸套的一端固定於該支架， 而另一端设有一止播部。 扭簧，套設於該軸套，其第一端活動抵接於該軸套的止 擒部’第二端則活動抵接於該支架的止擋部。 —第一轉動片，套設於該心軸的限制軸段，並與該心軸同 步作動’該第一轉動>!位於該扭簧的第一端，並可以一凸部活 動推動該扭簧的第一端。 第一轉動片，套設於該心軸的限制軸段，並與該心軸同 步作動’該第二轉動片位於該扭簧的第二端，並可以一凸部推 動該扭簧的第二端。 以及， 迫緊元件。 一彈性元件，套設於該, U轴上，且該心軸末端設一 為能進一步瞭解本創作之特徵、技術手段以及所達成之具 體功能、目的’茲列舉較且體之音, ^體之實施例’繼以圖式、圖號詳細 說明如後。 【實施方式】 明參閱第1-3目’係本創作第一實施例之立體組合圖、元 件分解圖及另-視㈣元件分_。本_省力型轉轴結構包 含-支架1 ’該支架1具有一樞接部1〇，轉部1〇為一直立架 板’且椹接部10設有-圓雜接孔U，支架丨並具有一固定部 2固疋4 12叹有數個固定孔13，用以將支架^固定於掀蓋 式電子產品的本體上，支架〗的_部ω設有二個上下設置 的固疋孔14 ’並形成—止擋部，止擋部μ係由其中一固定 孔14的側壁往外延伸形成。 軸2以斷面非圓形的限制軸段2〇穿設於該樞接孔 Π。轴2的一端設有一連接部21，用以飯接一固定件，以 口疋至電子產品的螢幕上。該心、軸2上凸設有-扇形的第一轉 片3該第一轉動片23係一體成型於心軸2。該限制軸段 2〇可^又兩個相對平面，使斷面形成近似長方形的非圓形形狀。 軸套3，套設於心軸2上，該軸套3的一端設有兩個凸 出的固疋部3G，該固定部3G係麵於支架1樞接部10的固定 使輪套3固定於支架1。軸套3的另一端並設有一止擋 M381990 部3〗，該止擋部31係往外徑向延伸。 祕I:簧4，套設於該轴套3，扭簧4的第-端41係活動抵 、套3的止擋部3卜於轉動過程可擋止於止擋部31.第二 端42係活紐接於該支架1的止擋部15，於轉動過程可擋止 於該止擋部15。且扭篑4的第—端41可受心軸2第一轉動片 23的推動。 -第二轉動片5 ’以—形狀可與該限制軸段Μ嵌合以同步 作動的套孔5〇套設細軸2親她段2g 位於雜簧4的第二端42，並位於支架 5具有一凸部51，於轉動過程可推動該扭簧4。該支架丨的樞 接部10設有-凸出的擋塊16，該第二轉動片5的凸部51可轉 動擋止於該擋塊16，以限制螢幕開啟的角度。 一彈性元件6 ’套設於該心轴2的限制轴段2〇上，該彈性 元件6為複數個弧形彈片61，該些彈片61並以正反面交錯排 列設置。該心軸2末端設一迫緊元件7，該迫緊元件7為一螺 帽，係鎖接於心軸2末端的一螺紋段。 該心軸2可進一步套設一固定凸輪81與一活動凸輪82， 該固定凸輪81與活動凸輪82的接觸面設有至少一對可相互私 合的定位凹槽810與定位凸塊820。該固定凸輪81以一圓形轴 孔811套設於該限制軸段20 ’並以一凸柱812嵌固於該支架i 的下端固定孔14。該活動凸輪82以一形狀與該限制軸段2〇街 面相同的轴孔821套設於該限制軸段20,以與心軸2同步作動。 8 M381.990 該固定凸輪81與活動凸輪82餘於彈性元件6與第二轉動片 5之間，可提供轉軸自動閉鎖的功能。 藉由上述結構，請參閱第1圖，為轉轴在0度閉合的狀態， 轉轴在0賴合時，扭簧4為壓縮狀態，其第_端41擒止於袖 套3止擋部3卜而第二端42受第二轉動片5凸部51的推賴 制使扭簧4壓縮蓄能。當轉軸由Q度時，心軸2轉動帶動 第二轉動片5轉動，使凸部51離開了扭箐4的第二端似，扭 簧4失去了壓制即釋能而提供—開啟_助力，而達到開輕， 易於開啟的省力效果。如第4圖所示，為開啟至％度的動作示 意圖’當開啟至90度，扭簧4完全釋能，其第二端42撞止於 支架1的止擋部15 ’而第—轉動片23隨心軸2轉動並接觸扭 簧4的第一端41。 當繼續往後方開啟時，扭簧4的第二端42被止擋於支架i 的止擋部15 ’扭簧4的第—端41則被第__轉動片23推動而壓 縮’使扭力增加’可讀住螢幕，防止螢幕職方時因自 身重量往下掉，如第5_6圖所示。此時扭簧4是往後順向壓縮。 第5·6圖所示約為開啟14〇度，心軸2係帶動第二轉動片5往 '轉動使其凸部51擋止於支架1的擋塊16，而 旋轉的最大角度。 相反地’於螢幕閉合時’心軸2帶動第-轉動片23往前轉 動在140度〜9〇度時，扭簧4因第-端41失去第-轉動片23 的壓制而釋放’亦提供一辅助力往回轉動。閉合至90度時，如 9 第4圖所示，扭簧4完全釋放，扭簧4的第一端4i擔止於轴套 3的止擋部3卜而第二轉動片5的凸部51轉回抵接於扭簧 第二端42。 、 再由90度閉合至〇度時，扭簧4再度被壓縮，其第—端 41被軸套3的止擋部31止擋，第二端似受第二轉動片5的凸 部51推動而壓縮蓄能’如第1圖所示，使扭力增加，而達到關 重的效果’以避免螢幕咖自身重量而自動掉下撞擊電子 產口〇的本體。此時，螢幕係往前順向壓縮。 因此轉軸在9〇度時，扭簧4為釋放狀態，轉轴往前閉合 往後開啟時，扭簧4皆為順向_，扭箐4可以達到雙向;壓 的力月具有關重’避免螢幕閉合時自動往下掉的效果，且 具有防止§幕開啟至後方會自動往下掉的效果。 明參閱第7圖’係左邊娜與右邊娜於開啟⑻度（第* 圖）的上視圖’左邊轉轴與右邊轉軸為對稱設置，但由於扭簧 兩端皆設有止擋部與轉動片，因此，扭簧可以左右共用，、即I 邊扭η的旋向與右邊扭簧岐向相同，如此可避植裝錯誤。 例如：當發幕繼續往後開啟，右邊轉軸的第—轉動片U推動扭 箸4右端(第一端41)轉動壓縮，而扭簧4左端(第二端42)擋止 於支架1止擋部15。左邊轉轴的扭簧4右端(第-端41)則有第 二轉動片5的凸部51以推動壓縮扭簧4,且扭簧4的左端(第二 端42)可擋止於軸套3的止擋部31;因此，扭簧可以左右共用。 又如.當勞幕由90度往前閉合時，右邊轉軸的第二轉動片$的 凸邛51推動扭簧4的左端(第二端42)轉動麼縮，且扭菁4的右 端(第端41)擋止於軸套3的止擋部31。左邊轉軸的扭簧4左 端(第二端42)則有第一轉動片23推動壓縮，而扭簧右端(第一 端41)則可擋止於支架1的止擋部I5。藉於扭簧4的兩端皆設 =止擋。卩及轉動’扭簧即可左右共用，避免組裝錯誤·且扭 簧可活動地往前麵雜後麵，具有雙_壓的功能。 里另外藉由轴套3固定於支架1Jl，與支架1共同做為扭 貝4兩端的止擋部，使雜達到前述的目的之外，亦可減少佔 用空間’以解決空間不足的問題。 々請參閱第8圖，係本創作的第二實施例，於第一實施例中， 第轉動片23係-體成型於心軸2上。而本實施例的第一轉動 片23係為獨立的元件’第—轉動片23以-形狀可彼合於心軸 2限制軸& 20的套孔23〇套設於限制軸段，以與心袖2同步 =°第一轉動片23設有-凸部加’以活動推動壓縮扭簧4 的第一端41。 堉夢閲第9圖 w而釉套的另—實施例，軸套3的止 二可改為插銷，如圖所示，該軸套3的一端設有兩個凸出 Γ=Γ該固定部30係嵌固於支架1拖接部_定孔 插^ 加。術3有插孔％， 一插鎖33係插設固定於插孔 本新型雖為實現上述目‘伸’以作為止擋部。 j- ^ M 揭路了較佳的具體實施例，惟 限制本新型之構造特徵，任何該技術領域之通常知 M381990 識者應知，在本新型的技術精神下，任何輕易思及之變化或修 飾皆是可能的，且皆為本案之申請專利範圍所涵蓋者。 【圖式簡單說明】 第1圖，係本創作第一實施例於閉合狀態之組合立體圖。 第2圖’係本創作第一實施例之元件分解圖。 第3圖，係本創作第一實施例另一視角之元件分解圖。 第4圖，係本創作第一實施例開啟9〇度之狀態示意圖。 第5圖，係本創作第一實施例開啟約140度之狀態示意圖。 第6圖，係本創作第一實施例開啟約140度之另一視角的狀態 示意圖。 第7圖’係本創作第一實施例的左邊轉軸與右邊轉軸於開啟 90度的上視示意圖。 第8圖，係本創作第二實施例之元件分解圖。 第9圖’係本創作軸套的另一實施例。 【主要元件符號說明】 1、支架 10、樞接部 11、樞接孔 12、固定部 13、固定孔 14、固定孔 15、止擋部 16、擋塊 2、心軸 20、限制轴段 21、連接部 22、固定件 23、第一轉動片 230、套孔 12 M381.990 231、凸部 30、固定部 32、插孔 4、扭簧 42、第二端 50、套孔 6、 彈性元件 7、 迫緊元件 810、定位凹槽 812、凸柱 820、定位凸柱 3、轴套 31、止擋部 33、插銷 41、第一端 5、第二轉動片 51、凸部 61、彈片 81、 固定凸輪 811、軸孔 82、 活動凸輪 821、轴孔 13The first rotating piece is coupled to the mandrel and is actuated in synchronization with the core pumping, and has a convex portion, and the second end of the torsion spring is urged and compressed by the convex portion. The bomb m is set on the call, and the correction end is set - when the tightening element is closed forward, (4) (4) is released, the screen is stopped by the first end of the furnace by the stop of the sleeve, and the second end Then, there are:: the second rotating piece convex part pushes forward, and when the torsion spring is forwardly pressed forward, when the screen is closed, the effect of automatically falling down (four) is released, and the private convex part is rotated away from the torsion spring. The second end of the 'Ting Jing release' force, the _, the effect of the Qi Li is 5 from the screen back from 9 degrees, the second end of the torsion spring is stopped at the stop of the bracket' and the first end is The first rotating piece of the mandrel is pushed backwards, so that the torsion spring is compressed backwards in the forward direction, which has the effect of preventing the screen from opening to the rear and going down. Therefore, the torsion spring can be bidirectionally pressed, so that the rotating shaft can achieve the aforementioned effects. Furthermore, the left-hand shaft of the electronic product is usually symmetrically set, but since both ends of the torsion spring are provided with a stop jewel and a lion y, the torsion spring can be shared with the left and right sides, that is, the direction of the left torsion spring and the right torsion spring. The same direction of rotation, so as to avoid assembly errors and improve production efficiency. Another technical means adopted by the creative labor-saving shaft structure includes: a bracket, which is provided with a pivot hole in a pivotal portion, and the bracket is provided with a stop portion. A mandrel is disposed in the pivot hole by a non-circular limiting shaft segment. The sleeve is sleeved on the mandrel, one end of the sleeve is fixed to the bracket, and the other end is provided with a stop portion. The torsion spring is sleeved on the sleeve, and the first end of the torsion portion abuts against the stop portion of the sleeve and the second end is movably abutted against the stop portion of the bracket. a first rotating piece, sleeved on the limiting shaft section of the mandrel, and synchronized with the mandrel, the first rotation is located at the first end of the torsion spring, and can be pushed by a convex part The first end of the spring. a first rotating piece is sleeved on the limiting shaft section of the mandrel and is actuated synchronously with the mandrel. The second rotating piece is located at the second end of the torsion spring, and the second part of the torsion spring can be pushed by a convex part end. And, tighten the components. An elastic element is sleeved on the U-axis, and the end of the mandrel is provided with a function to further understand the characteristics, technical means and the specific functions and objectives achieved by the present invention. The embodiment will be described in detail below with reference to the drawings and the drawings. [Embodiment] Referring to Figures 1-3, a three-dimensional combination diagram, an exploded view of an element, and a further component (four) component division_ are used. The _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The fixing portion 2 has a plurality of fixing holes 13 for fixing the bracket to the body of the clamshell electronic product, and the _ portion ω of the bracket is provided with two fixing holes 14' And forming a stop portion, the stop portion μ is formed by extending a side wall of one of the fixing holes 14 outward. The shaft 2 is threaded through the pivot hole 2 of the non-circular limited shaft section. One end of the shaft 2 is provided with a connecting portion 21 for connecting a fixing member to the screen of the electronic product. The first rotating piece 3, which is convexly-shaped on the shaft and the shaft 2, is integrally formed on the mandrel 2. The limiting shaft section 2 〇 can be two opposite planes, so that the section forms an approximately rectangular non-circular shape. The sleeve 3 is sleeved on the mandrel 2, and one end of the sleeve 3 is provided with two protruding solid portions 3G, and the fixing portion 3G is fixed to the pivoting portion 10 of the bracket 1 to fix the wheel sleeve 3. On the bracket 1. The other end of the sleeve 3 is provided with a stop M381990 3, which extends radially outward. Secret I: The spring 4 is sleeved on the sleeve 3, and the first end 41 of the torsion spring 4 is movably abutted, and the stop portion 3 of the sleeve 3 can be blocked from the stop portion 31 during the rotation process. The second end 42 The latch is connected to the stop portion 15 of the bracket 1 and is blocked by the stop portion 15 during the rotation. And the first end 41 of the twisting ring 4 can be pushed by the first rotating piece 23 of the spindle 2. a second rotating piece 5' can be fitted with the limiting shaft section 以 to simultaneously actuate the sleeve hole 5, and the thin shaft 2 is disposed on the second end 42 of the hybrid spring 4, and is located at the bracket 5 There is a convex portion 51 which can push the torsion spring 4 during the rotation. The pivoting portion 10 of the bracket is provided with a protruding block 16, and the convex portion 51 of the second rotating piece 5 is rotatably blocked by the stopper 16 to limit the angle at which the screen is opened. An elastic member 6' is sleeved on the limiting shaft portion 2'' of the mandrel 2. The elastic member 6 is a plurality of arcuate elastic pieces 61 which are arranged in a staggered arrangement on the front and back sides. The end of the mandrel 2 is provided with a pressing member 7, which is a nut that is locked to a threaded section at the end of the mandrel 2. The mandrel 2 can further be provided with a fixed cam 81 and a movable cam 82. The contact surface of the fixed cam 81 and the movable cam 82 is provided with at least one pair of positioning grooves 810 and positioning protrusions 820 which are mutually compliant. The fixed cam 81 is sleeved on the limiting shaft section 20' by a circular shaft hole 811 and is fixed to the lower end fixing hole 14 of the bracket i by a protrusion 812. The movable cam 82 is sleeved on the restricting shaft section 20 with a shaft hole 821 having the same shape as the restricting shaft section 2 〇 street surface to be operated in synchronization with the spindle 2 . 8 M381.990 The fixed cam 81 and the movable cam 82 are disposed between the elastic member 6 and the second rotating piece 5, and can provide a function of automatically locking the rotating shaft. With the above structure, please refer to FIG. 1 , in which the rotating shaft is closed at 0 degrees, when the rotating shaft is at 0, the torsion spring 4 is in a compressed state, and the first end 41 is stopped at the stop of the sleeve 3 . 3, the second end 42 is compressed by the torsion spring 4 by the projection of the convex portion 51 of the second rotating piece 5. When the rotating shaft is rotated by Q degrees, the rotation of the spindle 2 drives the second rotating piece 5 to rotate, so that the convex portion 51 is separated from the second end of the twisting ring 4, and the torsion spring 4 loses the pressing and releasing energy to provide the opening-assisting force. And it achieves the labor-saving effect of being light and easy to open. As shown in Fig. 4, in order to open to the degree of motion diagram 'when turned to 90 degrees, the torsion spring 4 is fully released, and the second end 42 hits the stop portion 15' of the bracket 1 and the first rotating piece 23 rotates with the mandrel 2 and contacts the first end 41 of the torsion spring 4. When continuing to open to the rear, the second end 42 of the torsion spring 4 is stopped at the stop portion 15 of the bracket i. The first end 41 of the torsion spring 4 is pushed by the first rotating piece 23 to be compressed to increase the torque. 'Read the screen to prevent the screen staff from falling down due to their own weight, as shown in Figure 5_6. At this time, the torsion spring 4 is compressed backward in the forward direction. As shown in Fig. 5-6, the opening is about 14 degrees, and the mandrel 2 drives the second rotating piece 5 to 'rotate the maximum angle at which the convex portion 51 blocks the stopper 16 of the bracket 1 and rotates. Conversely, when the mandrel 2 drives the first rotating piece 23 to rotate forward at 140 degrees to 9 degrees, the torsion spring 4 is released by the first end 41 losing the pressing of the first rotating piece 23' An auxiliary force turns back. When it is closed to 90 degrees, as shown in Fig. 4, the torsion spring 4 is completely released, and the first end 4i of the torsion spring 4 is held by the stopper portion 3 of the sleeve 3 and the convex portion 51 of the second rotating piece 5 is held. Turning back to the second end 42 of the torsion spring. When the temperature is closed from 90 degrees to the twist, the torsion spring 4 is again compressed, and the first end 41 is stopped by the stop portion 31 of the sleeve 3, and the second end seems to be pushed by the convex portion 51 of the second rotating piece 5. The compressed energy storage, as shown in Figure 1, increases the torque and achieves the effect of closing the weight to avoid the weight of the screen coffee itself and automatically drop the body that hits the electronic product. At this point, the screen is compressed forward. Therefore, when the rotating shaft is at 9 degrees, the torsion spring 4 is in the released state, and when the rotating shaft is closed forward and backward, the torsion spring 4 is in the forward direction _, the twisting 4 can reach the two-way; the pressing force has the closing weight 'avoiding The effect of automatically falling down when the screen is closed, and has the effect of preventing the § curtain from opening to the rear and automatically falling down. See Figure 7 for the left side of the left side and the right side of the opening (8) degrees (Fig. *). The left and right axes are symmetrically set, but the ends of the torsion spring are provided with a stop and a rotating piece. Therefore, the torsion spring can be shared to the left and right, that is, the twisting direction of the twisting η of the I side is the same as the twisting direction of the right torsion spring, so that the planting error can be avoided. For example, when the curtain continues to open backward, the first rotating piece U of the right shaft pushes the right end of the twisting ring 4 (the first end 41) to rotate and compress, and the left end of the torsion spring 4 (the second end 42) stops at the bracket 1 stop. Part 15. The right end (the first end 41) of the torsion spring 4 of the left shaft has a convex portion 51 of the second rotating piece 5 to push the compression torsion spring 4, and the left end (second end 42) of the torsion spring 4 can block the sleeve The stopper portion 31 of 3; therefore, the torsion spring can be shared left and right. For example, when the screen is closed 90 degrees forward, the tension 51 of the second rotating piece of the right shaft pushes the left end (second end 42) of the torsion spring 4 to rotate, and the right end of the twisted 4 The end 41) is blocked by the stop 31 of the sleeve 3. The left end of the torsion spring 4 of the left shaft (the second end 42) is driven by the first rotating piece 23, and the right end of the torsion spring (the first end 41) is blocked by the stopper I5 of the bracket 1. By means of the torsion spring 4, both ends are set to = stop.卩 and turning the 'torsion spring can be shared left and right to avoid assembly errors. · The torsion spring can move to the front and back, and has the function of double pressure. Further, the sleeve 3 is fixed to the bracket 1J1, and the bracket 1 is used as a stopper at both ends of the twisted bell 4, so that the above-mentioned purpose can be achieved, and the space occupied can be reduced to solve the problem of insufficient space. Referring to FIG. 8, a second embodiment of the present invention, in the first embodiment, the first rotating piece 23 is integrally formed on the mandrel 2. The first rotating piece 23 of the present embodiment is a separate component. The first rotating piece 23 can be sleeved on the limiting shaft segment in a shape corresponding to the mandrel 2 to limit the shaft & The heart sleeve 2 is synchronized = the first rotating piece 23 is provided with a - convex portion plus 'to push the first end 41 of the compression torsion spring 4 to move. In another embodiment of the glaze cover, the second embodiment of the sleeve 3 can be changed into a latch. As shown in the figure, one end of the sleeve 3 is provided with two protrusions Γ=Γ the fixing portion. The 30 series is embedded in the bracket 1 tow part _ fixed hole insertion ^ plus. The technique 3 has a jack %, and a latch 33 is inserted and fixed to the jack. Although the present invention achieves the above-mentioned purpose, it is used as a stopper. J- ^ M discloses a preferred embodiment, but limits the structural features of the present invention, and any person skilled in the art knows that M381990 should be aware of any changes or modifications that are easily thought of under the technical spirit of the present invention. Both are possible and are covered by the scope of the patent application in this case. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a combination of the first embodiment of the present invention in a closed state. Fig. 2 is an exploded view of the first embodiment of the present creation. Fig. 3 is an exploded view of another perspective of the first embodiment of the present creation. Fig. 4 is a schematic view showing the state in which the first embodiment of the present invention is turned on by 9 degrees. Fig. 5 is a schematic view showing the state in which the first embodiment of the present invention is opened by about 140 degrees. Fig. 6 is a view showing a state in which the first embodiment of the present creation is opened at another viewing angle of about 140 degrees. Fig. 7 is a top plan view showing the left rotation axis and the right rotation axis of the first embodiment of the present invention at an opening degree of 90 degrees. Figure 8 is an exploded view of the second embodiment of the present invention. Fig. 9 is another embodiment of the present invention. [Main component symbol description] 1. The bracket 10, the pivoting portion 11, the pivot hole 12, the fixing portion 13, the fixing hole 14, the fixing hole 15, the stopper portion 16, the stopper 2, the mandrel 20, and the restriction shaft portion 21 , connecting portion 22, fixing member 23, first rotating piece 230, sleeve hole 12 M381.990 231, convex portion 30, fixing portion 32, insertion hole 4, torsion spring 42, second end 50, sleeve hole 6, elastic member 7. The pressing member 810, the positioning groove 812, the protruding post 820, the positioning protrusion 3, the sleeve 31, the stopping portion 33, the latch 41, the first end 5, the second rotating piece 51, the convex portion 61, and the elastic piece 81 , fixed cam 811, shaft hole 82, movable cam 821, shaft hole 13