M398743 五、新型說明： 【新型所屬之技術領域】 本創作關於一種應用於折疊式電子產品，例如筆記型電腦、手機、 翻譯機 '數位攝影機（DV)等，之阻尼樞紐器，尤指一種開啟速度趨 於一致的阻尼樞紐器。 【先前技術】 • 折疊式電子產品，例如筆記型電腦、手機、翻譯機、數位攝影機 (DV)等，必須以一樞紐器連接可開啟及閉合的上蓋（一般為液晶顯 示螢幕）及本體（一般為鍵盤或按鍵）。 常見的枢紐器多以一彈簧或彈片來提供上蓋開啟的支撐力。然而 在彈簧的作用下’折疊式電子產品開啟或閉合的速度會越來越快從 而在70全開啟或閉合時’折疊式電子產品的上蓋及本體之間會產生衝 擊力’從而對折叠式電子產品自身性能會產生不良影響且也容易造成 φ 電子產°°從使用者手中掉落。為了減小折叠式電子產品打開或閉合時 產生的衝擊力，通常在梅紐器上同軸設置—阻尼器，以形成阻尼框紐 器。相關的前案可參見中華民國新型專利公告號M32272〇「枢紐器」、 M339891「框紐器」及_5121號「樞紐機構」等前案。 然而’由於-般阻尼器的阻紐定，因此習知的阻尼器（相較於 本創作未設置第-及第二速度調整彈性結構），參見第十—圖所示之開 啟速度曲線’因受重力影響會有加速度現象，使得開啟動作不穩定， 易發生晃動，有待改善。 4 【新型内容】 針對於先前技術之問題點，本創作提供了一種開啟速度趨於一致 的阻尼樞紐器，設置於具有一上蓋及一本體之一折疊式電子產品中， 且該上蓋及本體可相對開啟及閉合；其係至少包括： 一樞紐機構，包含一固定座，具有一連接體固定連接於該本體， 並自該連接體延伸出一對轴孔座，該對轴孔座上分別具有一軸孔；一 轉軸，具有一圓轴部穿及一非圓軸部，該圓軸部穿過該對轴孔，使該 轉軸可相對該固定座旋轉；該非圓軸部與該上蓋之一凸筒内的一非圓 孔一側連接，使該上蓋開啟或閉合動作時，該轉軸一同旋轉； 一阻尼器，具有一外殼，該外殼被固定於該本體上内部具有一阻 尼機構，並延伸出一軸體，該轴體端部形成非，，該非圓部與該上 蓋之凸筒内的非圓孔另一側連接，以延遲該上蓋開啟或閉合動作；及 一第一及一第二速度調整彈性結構，每一至少具有一彈性體該 彈性體在該上蓋開啟至少自6〇度至⑶度間提供反向阻力，使該上蓋 開啟速度減緩以保持開啟速度趨於一致。 本創作所提供的一種開啟速度趨於一致的阻尼樞紐器其令該第 速度調整彈性結構係設置於該阻尼器上。該第一速度調整彈性結構 之彈性體為固定於該外殼上並位於該轴體旁的―彈片，另—凸輪設置 於該轉軸上—同轉動，該凸輪具有塊，在該上制啟至少自60度 至120度間該凸塊壓追該彈片產生該反向阻力。而第二速度調整彈性 結構係设置於馳城構上。糾二速度碰雜結構之彈性體係為 —扭簧，縣接於該轉軸之®軸部上；該扭簧具有-EJ定端及-滑動 端伸人該圓軸部上開設的—切槽内；該滑動端在該上蓋 M398743 自〇度開啟至60度間係沿著該固定座其中之一軸孔座外緣滑動，而自 60度至120度間該滑動端被該軸孔座之底緣抵擋產生該反向阻力。 進者’本創作所提供的一種開啟速度趨於一致的阻尼樞紐器，其 中該阻尼器之外殼在内部形成一通道，以收容該轴體後段形成之一後 筒體；該後筒體具有一中空部’該中空部前端形成一前固定槽，用以 收納一大扭簧及其前端’而該大扭簧之後端則伸入該外殼通道後端形 成的一後固定槽内；當該上蓋開啟或閉合時，該軸體旋轉以帶動該大 扭簧變形’並在該中空部内灌有的阻尼液，以形成阻尼功能。 另’本創作所提供的一種開啟速度趨於一致的阻尼樞紐器，也可 以只運用第一或第二速度調整彈性結構其中之一即可。 本創作之主要目的係在提供—種開啟速度趨於一致的阻尼樞紐 器’由於隨著上蓋相對本體開啟角度增加，第一速度調整彈性結構之 彈片變形及第二速度調整彈性結構之扭簧變形也增加，以提高反向阻 力’故可使得上蓋開啟速度趨於-致，減少開啟時會加速度的缺點。 以下，將依據圖面所示之實施例而詳加說明本創作之結構特點及 使用功效。 【實施方式】 清參見第-®至第三圓’本解提供—棚啟速度趨於—致的阻 尼拖紐器，設置於具有-上蓋9 本體g 2之—折疊式電子產品 9 0中’且上蓋91及本體9 2可相對開啟及閉合，如第—圖中箭頭 G所不。而阻尼;紐益主要似—柩紐機構工◦、—阻尼器2 〇及— 6 第—及一第二速度調整彈性結構3 0及4 Q所構成。 ^本創作雜紐機構主要具有-固定座HI轉軸！2。固 …座11具有連接趙i丄丄以鉚对14固定連接於本體9 2，灶自 該連接體111延伸出-對轴孔片η 2，該對軸孔片i i 2上分別 、有轴孔113，另’轴孔座112具有圓形的-外緣114及水 平的一底緣115。 轉轴12則具有一圓軸部i 2丄穿及一非圓轴部丄2 2，該圓轴 部121穿過該對轴孔工i 3，使該轉轴丄2可相對固定座丄工旋 轉，該非圓轴部12 2與上蓋91之-凸筒9 i i内的一非圓孔〆側 9 1 2連接’使上蓋9 1啟或閉合動作時轉軸1 2 一同旋轉；另， 圓轴部121上開設的一切槽12 3。 一C型片13係扣入該圓軸部i 2 i上的凹槽}24，使得該轉 軸12以可旋轉的方式固定於固定座丄丄上。 本創作的阻尼器2 〇，主要具有一外殼21，該外殼21以鉚釘 2 4固定於本體9 2上，内部具有一阻尼機構，並延伸出一軸體2 2， 該軸體2 2端部形成非圓部2 21，該非圓部2 21與上蓋91之凸 筒91 1内的非圓孔另一側913連接，以延遲上蓋91開啟或閉合 動作。 請配合第二圖及第四圖所示，外殼2 1前方具有·凸緣2 1 1，並 在内部形成一通道2 1 2，以收容軸體2 2後段形成一後筒體2 2 2 ;後筒體2 2 2具有一中空部2 2 3，巾空部2 2 3前端形成一前 固定槽2 2 4，用以收納一大扭簧2 3及其前端2 31，而大扭簧2 M398743 3之後端2 3 2則伸入外殼21通道212後端形成的一後固定槽2 1 3 ’·當上蓋9 1開啟或閉合時，該轴體2 2旋轉以帶動大杻簧2 3 變形，並配合在中空部2 2 3内灌有的阻尼液，以形成阻尼功能。 本創作具有一第一速度調整彈性結構3 0及一第二速度調整彈性 結構4 0，每一至少具有一彈性體，該彈性體在上蓋g χ開啟至少自 60度至120度間提供反向阻力，使上蓋9 i開啟速度減緩以保持開啟 速度趨於一致。 在圖中顯示了第一速度調整彈性結構3 〇及第二速度調整彈性結 構4 0 ’但也可以只運用其中的第—或第二速度調整彈性結構3 〇或 4 0即可。 本創作的第一速度調整彈性結構3 〇係設置於阻尼器2 〇上。第 -速度調整彈性結構3 Q之彈性體為峡於外殼2 i上並位於轴體2 2旁的-彈片3χ，彈片3i延接—固定部3 η而固接外殼21 ; 另一凸輪3 2設置於轉軸2 2上-同轉動，該凸輪3 2具有一凸塊3 2 1 ’在上蓋9 1開啟自60度至12〇度間凸塊3 2丄壓迫彈片3工產 生反向阻力’使上蓋91開啟速度減緩以保持開啟速度趨於一致。 外殼21的凸緣21 1包覆於彈片3 τ之彈性體及凸輪3 2外， 以形成保護。 本創作的第二速度調整彈性結構4 〇係設置於她機構丨〇上。 第二速度難雜結構4 Q之彈性體料—扭*，絲接於轉轴工2 之圓軸部121上；該扭簧具有-固定端4 i及―滑動端4 2 ;該固 定端4 1係伸人圓軸部i 2丄上開設的切槽丄2 3内；該滑動端4 2 8 M398743 在上蓋9 1自〇度開啟至60度間係沿著固定座i i其中之一轴孔座工 1 2外緣1 1 4滑動（如第四圖所示），而自6〇度至丨2〇度間該滑動 端4 2被軸孔座112之底緣1 15抵擋產生該反向阻力（如第六圖 及第八圖所示）。 在第四圖至第九圖係說明了本創作之動作。 參見第四圖及第五圖，係、為上蓋9 i閉合於本體9 2上，而第一 速度調整彈性結構3 0的凸輪3 2之凸塊3 21與彈片31未接觸， 而第二速度調整彈性結構40的滑動端42位在軸孔座112圓形外 緣114上而可滑動，故皆不會產生反向阻力。 參見第六圖及第七圖，當上蓋9]相對本體9 2開啟，如箭頭〇 1，旋轉超過60度後，則第一速度調整彈性結構3 〇的凸輪3 2之凸 塊3 21壓迫彈片31變形’而第二速度調整彈性結構4 q的滑動端 4 2抵擋於軸孔座1 12水平底緣1 15，兩者皆產生反向阻力，以 減緩上蓋91開啟速度。 參見第八圖及第九圖，當上蓋9 i相對本體9 2繼續開啟至12〇 度，最大開啟角度，則第一速度調整彈性結構3 〇之彈片3 i變形及 第二速度調整彈性結構4 0之扭簧變形增加至最大，反向阻力也增至 最大。 由於隨著上蓋91相對本體9 2開啟角度增加，彈片31變形及 第二速度調整彈性結構4〇之扭簧變形也增加，以提高反向阻力，故 可使得上蓋91開啟速度趨於一致，達到第十圖中所示的速度變化。 相較於第十一圖所示習知阻尼樞紐器速度曲線因受重力影響會有加速 9 度之缺點，摘_實可以改善。 器，完 入令入鼻二陳’本創作所提供的開啟速度趨於—致的阻尼極紐 王心專利之_性及進步性要件，爰依法提出申請。 【圖式簡單說明】 第—圖代表本創作組合於折疊式電子產品上的示意圖， 第二圖代表本創作與折叠式電子產品之大部分解圖， 圖代表本創作與折叠式電子產品之細部分解圖， 圖代表本創作上蓋相對在閉合位置之框紐機構及阻尼器配置 圓， 第五圖代表本創作上蓋相對在閉合位置之側面視圖， 第圖代表本創作上蓋相對在開啟大於60度位置之極紐機構及阻 尼器配置圖， 第七圖代表本創作上蓋相對在開啟大於60度之側面視圖， 第圊代表本創作上蓋相對在開啟至12〇度位置之極紐機構及阻 尼器配置圖， 第九圖代表本創作上蓋相對在開啟至120度位置之側面視圖， 第十圖代表本創作之測試曲線圖， 第十一圖代表習知技術之測試曲線圖。 M398743 【主要元件符號說明】 掩紐機構1〇 固定座1 1 連接體111 軸孔座112 軸孔1 1 3 外緣1 1 4 底緣1 1 5 轉軸1 2 圓軸部121 非圓軸部12 2 切槽1 2 3 凹槽1 2 4 C型片1 3 鉚釘1 4 阻尼器2 0 外殼2 1 凸緣2 1 1 通道2 1 2 後固定槽213 軸體2 2 中空部2 2 3 前固定槽2 2 4 •大扭簧23 前端2 3 1 後端2 3 2 鉚釘2 4 第一速度調整彈性結構3 0 彈片3 1 固定部31 1 凸輪3 2 凸塊3 2 1 第二速度調整彈性結構4 0 固定端4 1 滑動端4 2 折疊式電子產品9◦ 上蓋9 1 凸筒9 1 1 非圓孔一側912 非圓孔另側913 本體9 2 非圓部2 21 後筒體2 2 2M398743 V. New description: [New technology field] This creation is about a kind of damper hinge used in folding electronic products, such as notebook computers, mobile phones, translation machines, digital cameras (DV), etc. A damper hub that tends to be uniform in speed. [Prior Art] • Folding electronic products, such as notebook computers, mobile phones, translators, digital video cameras (DVs), etc., must be connected with a hinge to open and close the upper cover (usually the LCD screen) and the body (generally For the keyboard or button). Common hinges often use a spring or shrapnel to provide the support for the upper cover to open. However, under the action of the spring, the folding electronic product will open or close faster, so that when the 70 is fully opened or closed, the impact between the upper cover and the body of the folding electronic product will be generated. The product's own performance will have an adverse effect and it will also easily cause the φ electron production to fall from the user's hand. In order to reduce the impact force generated when the folding electronic product is opened or closed, a damper is usually arranged coaxially on the merler to form a damper frame. For related pre-cases, please refer to the Republic of China new patent announcement No. M32272, "Pivot", M339891 "Box" and _5121 "Pivot". However, due to the resistance of the general damper, the conventional damper (compared to the first and second speed adjustment elastic structures is not provided in this creation), see the opening speed curve shown in the tenth figure. Acceleration may occur due to the influence of gravity, which makes the opening action unstable, and is prone to sloshing, which needs to be improved. 4 [New content] In view of the problems of the prior art, the present invention provides a damper hinge with a uniform opening speed, which is disposed in a folding electronic product having an upper cover and a body, and the upper cover and the body can be And a plurality of pivoting mechanisms, comprising: a fixing mechanism, a connecting body fixedly connected to the body, and extending from the connecting body a pair of shaft hole seats, wherein the pair of shaft hole seats respectively have a shaft shaft having a circular shaft portion and a non-circular shaft portion, the circular shaft portion passing through the pair of shaft holes to rotate the rotating shaft relative to the fixing seat; the non-circular shaft portion and one of the upper cover a non-circular hole is connected to one side, so that when the upper cover is opened or closed, the rotating shaft rotates together; a damper has a casing, and the casing is fixed on the body and has a damping mechanism and extends out of an axis a non-circular portion connected to the other side of the non-circular hole in the convex tube of the upper cover to delay the opening or closing operation of the upper cover; and a first and a second speed The entire elastic structure, each having at least one elastic member from the opening between the elastomer 6〇 ⑶ ° degrees to reverse resistance provides at least the upper cover so that the cover remains open to turn slows down the speed of convergence. The present invention provides a damper hub in which the opening speed tends to be uniform, and the first speed adjusting elastic structure is disposed on the damper. The elastic body of the first speed adjusting elastic structure is a "spring piece" fixed on the outer casing and located beside the shaft body, and the other cam is disposed on the rotating shaft - the same rotation, the cam has a block on which the at least one is opened The bump presses the shrapnel between 60 degrees and 120 degrees to generate the reverse resistance. The second speed adjusting elastic structure is disposed on the Chicheng structure. The elastic system of the second-order speed-matching structure is a torsion spring, and the county is connected to the shaft portion of the rotating shaft; the torsion spring has a -EJ fixed end and a sliding end extending from the circular shaft portion - a slot The sliding end slides along the outer edge of one of the fixing holes of the upper cover M398743 from the opening degree to 60 degrees, and the sliding end is the bottom edge of the shaft hole seat from 60 degrees to 120 degrees. The resistance creates this reverse resistance. In the present invention, a damper hinge having a uniform opening speed is provided, wherein the damper housing has a passage formed therein to receive a rear cylinder of the shaft body; the rear cylinder has a a hollow portion 'the front end of the hollow portion defines a front fixing groove for receiving a large torsion spring and a front end thereof, and the rear end of the large torsion spring extends into a rear fixing groove formed at the rear end of the outer casing passage; when the upper cover When opened or closed, the shaft body rotates to drive the large torsion spring to deform 'and the damping fluid is filled in the hollow portion to form a damping function. Another damper hub provided by the present invention that has a uniform opening speed can also be used to adjust one of the elastic structures using only the first or second speed. The main purpose of this creation is to provide a damper hinge with a uniform opening speed. As the opening angle of the upper cover relative to the body increases, the first speed adjusts the elastic deformation of the elastic structure and the second speed adjusts the torsion spring deformation of the elastic structure. It is also increased to increase the reverse resistance', so that the opening speed of the upper cover tends to be reduced, and the disadvantage of acceleration when opening is reduced. Hereinafter, the structural features and functions of the present invention will be described in detail based on the embodiments shown in the drawings. [Embodiment] See the -® to the third circle for the solution. The damper drag device with the shed speed tends to be disposed in the folded electronic product 90 with the upper cover 9 body g 2 ' The upper cover 91 and the body 92 can be relatively opened and closed, as indicated by the arrow G in the first figure. Damping; New benefits mainly consists of - 柩 New Institutions, dampers 2 〇 and - 6 - and a second speed-adjusting elastic structure 30 and 4 Q. ^This creative hybrid institution mainly has a fixed seat HI shaft! 2. The solid seat 11 has a connection connection with the rive pair 14 and is fixedly coupled to the main body 9 2 . The cooker extends from the connecting body 111 to the counter shaft hole piece η 2 , and the pair of shaft hole pieces ii 2 respectively have a shaft hole 113, the other 'shaft housing 112 has a circular outer edge 114 and a horizontal bottom edge 115. The rotating shaft 12 has a circular shaft portion i 2 and a non-circular shaft portion 222, and the circular shaft portion 121 passes through the pair of shaft holes i3, so that the rotating shaft 丄2 can be rotated relative to the fixed seat. The non-circular shaft portion 12 2 is connected to a non-circular aperture side 9 1 2 in the convex portion 9 ii of the upper cover 91 to rotate the rotating shaft 1 2 when the upper cover 9 1 is opened or closed; and the circular shaft portion 121 Everything opened on the slot 12 3 . A C-shaped piece 13 is fastened to the groove 24 of the round shaft portion i 2 i such that the rotating shaft 12 is rotatably fixed to the fixed seat. The damper 2 本 of the present invention mainly has a casing 21 which is fixed to the body 92 by rivets 24, has a damper mechanism inside, and extends out of a shaft body 2 2, and the end of the shaft body 2 2 is formed. The non-circular portion 21 is connected to the other side 913 of the non-circular hole in the boss 91 1 of the upper cover 91 to delay the opening or closing operation of the upper cover 91. As shown in the second and fourth figures, the outer casing 2 1 has a flange 2 1 1 in front and a channel 2 1 2 is formed therein to receive a rear cylinder 2 2 2 in the rear portion of the shaft body 2 2 ; The rear cylinder 2 2 2 has a hollow portion 2 2 3 , and the front end of the towel hollow portion 2 2 3 forms a front fixing groove 2 2 4 for accommodating a large torsion spring 2 3 and its front end 2 31 , and the large torsion spring 2 M398743 3 rear end 2 3 2 extends into the rear end of the outer casing 21 channel 212 formed by a rear fixing groove 2 1 3 '· when the upper cover 9 1 is opened or closed, the shaft body 2 2 rotates to drive the large spring 2 3 deformation And matching the damping fluid filled in the hollow portion 2 2 3 to form a damping function. The present invention has a first speed adjusting elastic structure 30 and a second speed adjusting elastic structure 40, each having at least one elastic body, and the elastic body provides a reverse between at least 60 degrees and 120 degrees when the upper cover g χ is opened. The resistance causes the opening speed of the upper cover 9 i to slow down to keep the opening speed tending to be uniform. The first speed adjusting elastic structure 3 〇 and the second speed adjusting elastic structure 40 ′ are shown in the figure, but it is also possible to use only the first or second speed adjusting elastic structure 3 〇 or 40 . The first speed adjusting elastic structure 3 of the present invention is disposed on the damper 2 。. The elastic body of the first speed adjusting elastic structure 3 Q is a shrapnel 3 峡 on the outer casing 2 i and located beside the shaft body 2 2 , the elastic piece 3 i is extended - the fixing portion 3 η is fixed to the outer casing 21; the other cam 3 2 Provided on the rotating shaft 2 2 - the same rotation, the cam 3 2 has a convex piece 3 2 1 'opening from the upper cover 9 1 from 60 degrees to 12 degrees, the convex piece 3 2 丄 pressing the elastic piece 3 to generate reverse resistance' The opening speed of the upper cover 91 is slowed to keep the opening speed tending to be uniform. The flange 21 1 of the outer casing 21 is wrapped around the elastic body of the elastic piece 3 τ and the cam 3 2 to form a protection. The second speed adjustment elastic structure 4 of the present invention is set on her body. The elastic material of the second speed difficult structure 4 Q is twisted*, and the wire is connected to the circular shaft portion 121 of the rotary shaft 2; the torsion spring has a fixed end 4 i and a sliding end 4 2 ; the fixed end 4 The 1 series extends into the grooving 丄 2 3 opened on the circular shaft portion i 2 ;; the sliding end 4 2 8 M398743 is opened between the upper cover 9 1 and the opening 60 degrees along one of the fixing holes ii The outer edge of the workpiece 1 2 slides 1 1 4 (as shown in the fourth figure), and the sliding end 4 2 is resisted by the bottom edge 1 15 of the shaft hole seat 112 from 6 degrees to 2 degrees. Resistance (as shown in Figures 6 and 8). The actions of this creation are illustrated in the fourth to ninth drawings. Referring to the fourth and fifth figures, the upper cover 9 i is closed on the body 9 2 , and the protrusion 3 21 of the cam 3 2 of the first speed adjusting elastic structure 30 is not in contact with the elastic piece 31, and the second speed is The sliding end 42 of the adjusting elastic structure 40 is slidable on the circular outer edge 114 of the shaft hole seat 112, so that no reverse resistance is generated. Referring to the sixth and seventh figures, when the upper cover 9] is opened relative to the body 92, as indicated by the arrow 〇1, after the rotation exceeds 60 degrees, the first speed adjusting elastic structure 3 〇 the cam 3 2 of the cam 3 2 presses the elastic piece The deformation of the 31' and the sliding end 4 2 of the second speed adjusting elastic structure 4 q resists the horizontal bottom edge 1 of the shaft hole seat 12 12 , both of which generate reverse resistance to slow the opening speed of the upper cover 91 . Referring to the eighth and ninth figures, when the upper cover 9 i continues to open to 12 degrees with respect to the body 9 2 , the maximum opening angle, the first speed adjusting elastic structure 3 弹 the elastic piece 3 i deformation and the second speed adjusting elastic structure 4 The torsion spring deformation of 0 increases to the maximum and the reverse resistance also increases to the maximum. As the opening angle of the upper cover 91 relative to the body 92 increases, the deformation of the elastic piece 31 and the deformation of the torsion spring of the second speed adjusting elastic structure 4〇 are also increased to increase the reverse resistance, so that the opening speed of the upper cover 91 tends to be uniform. The speed change shown in the tenth figure. Compared with the conventional damper hub speed curve shown in Fig. 11 due to the influence of gravity, there is a disadvantage of accelerating by 9 degrees. The device, the completion of the order into the nose two Chen's opening speed of the creation of the creation tends to be the damper pole of the Wang Xin patent _ sexual and progressive elements, 提出 apply according to law. [Simple diagram of the diagram] The first diagram represents the schematic diagram of the creation combined with the folding electronic product, and the second diagram represents most of the solution of the creation and folding electronic products. The figure represents the details of the creation and folding electronic products. The exploded view, the figure represents the frame and the damper arrangement circle of the upper cover relative to the closed position, and the fifth figure represents the side view of the upper cover relative to the closed position, and the figure represents the position of the upper cover relative to the opening of more than 60 degrees. The configuration of the pole mechanism and the damper, the seventh diagram represents the side view of the upper cover of the present invention with a relative opening of more than 60 degrees, and the third layer represents the configuration of the pole and the damper of the upper cover of the present invention at a position of 12 degrees. The ninth diagram represents a side view of the upper cover of the creation relative to a position of 120 degrees, the tenth diagram represents a test curve of the present creation, and the eleventh diagram represents a test curve of the prior art. M398743 [Description of main components] Shielding mechanism 1 〇 fixing base 1 1 connecting body 111 shaft hole housing 112 shaft hole 1 1 3 outer edge 1 1 4 bottom edge 1 1 5 rotating shaft 1 2 round shaft portion 121 non-circular shaft portion 12 2 Groove 1 2 3 Groove 1 2 4 C-plate 1 3 Rivet 1 4 Damper 2 0 Enclosure 2 1 Flange 2 1 1 Channel 2 1 2 Rear fixing groove 213 Shaft body 2 2 Hollow part 2 2 3 Front fixing Slot 2 2 4 • Large torsion spring 23 Front end 2 3 1 Rear end 2 3 2 Rivet 2 4 First speed adjustment elastic structure 3 0 Spring 3 1 Fixing part 31 1 Cam 3 2 Bump 3 2 1 Second speed adjustment elastic structure 4 0 Fixed end 4 1 Sliding end 4 2 Folding electronic product 9◦ Upper cover 9 1 Bulge 9 1 1 Non-round hole side 912 Non-round hole Other side 913 Body 9 2 Non-circular part 2 21 Rear barrel 2 2 2