1298013 九、發明說明： 乂發明所屬之技術領域】 〜 本發明係關於一種鉸鏈結構，尤其係關於一種適用於 折疊式電子裝置中且具自動開啓功能之鉸鏈結構，本發明 還關於一種應用該鉸鏈結構之折疊式電子裝置。 【先前技術】 隨著無線通訊技術與資訊處理技術之迅速發展，行動 血電話、PDA(個人數位助理）等攜帶式電子裝置使消費者可 隨時隨地享受高科技帶來之種種便利，其中折疊式電子裝 置因其結構玲瓏新穎而廣受消費者之歡迎。 折疊式電子裝置通常藉由鉸鏈結構連接本體及蓋 體。習知鉸鏈結構通常包括主軸、凸輪、從動件及彈簀， 彈簧套於主軸上，凸輪、從動件之一與彈簧直接接觸，凸 輪與從動件在彈簧彈性作用力下，始終保持接觸並且相配 合。關閉狀態時，凸輪之凸輪面之凸峰位於從動件凸輪面 _ 之凹谷；在翻蓋打開時，凸輪之凸峰相對從動件之凹谷越 過從動件之凸峰，停止施力後，凸輪之凸峰在彈簧之彈力 作用下自動滑入從動件之另一凹谷而鎖定。此種類型之鉸 鏈結構利用彈簀之彈力使凸輪之凸輪面與從動件之凸輪面 相對運動，以實現蓋體相對本體之開合。 惟，採用上述鉸鏈結構之折疊式電子裝置在使用時， 使用者通常需雙手配合才能開啓蓋體，在很多情況下導致 操作不便。 71298013 IX. Description of the invention: The technical field to which the invention belongs ～ The present invention relates to a hinge structure, in particular to a hinge structure suitable for use in a folding electronic device and having an automatic opening function, and the invention also relates to an application of the hinge Structured folding electronic device. [Prior Art] With the rapid development of wireless communication technology and information processing technology, portable electronic devices such as mobile blood phones and PDAs (personal digital assistants) enable consumers to enjoy the convenience brought by high technology anytime and anywhere, among them, folding type Electronic devices are widely welcomed by consumers because of their exquisite structure. Folding electronic devices typically connect the body and the cover by a hinge structure. The conventional hinge structure generally includes a main shaft, a cam, a follower and a magazine. The spring is sleeved on the main shaft. One of the cam and the follower is in direct contact with the spring, and the cam and the follower are always in contact under the elastic force of the spring. And match. In the closed state, the convex peak of the cam surface of the cam is located in the valley of the follower cam surface _; when the flip is opened, the convex peak of the cam passes over the valley of the follower against the convex peak of the follower, and after the force is stopped, The cam peak is automatically slid into the other valley of the follower under the elastic force of the spring to lock. This type of hinge structure utilizes the elastic force of the magazine to move the cam surface of the cam relative to the cam surface of the follower to achieve opening and closing of the cover relative to the body. However, when the folding electronic device adopting the above-mentioned hinge structure is used, the user usually needs to cooperate with both hands to open the cover body, which causes inconvenience in many cases. 7
1298013 【發明内容】 ;此有必要提供一種具有自動開啓功能之鉸鏈 吉構。 另，有必要提供一種應用該鉸鏈結構之折疊式電子裝 種鉸鏈結構，包括—主軸、—從動件、—凸輪、一 套筒、—第-彈性件、-第二彈性件及—襯套。從動件具 有讯犬起’該從動件固設於主軸之—端。凸輪具有凸輪面 ^又於其外壁上之卡合部，該凸輪套於主轴上並抵接於該 從動件|濟之内壁上設有凹槽及卡合部，該套筒套於主 ’、卡σ 4與凸輪之卡合部配合而限制該套筒與凸輪 相對轉動。第-彈性件具有第—端臂及相對之第二端臂， 該第一彈性件套於該主軸上，其第一端臂容置於套筒之凹 槽内第—彈性件套於主軸上，其—端抵頂於凸輪而使凸 輪之凸輪面與從動件之突起配合，其另一端抵頂於襯套。 襯套設有開孔，該襯套固設於主軸之另一端，第一彈性件 之第二端臂容置於該開孔内。 一種折疊式電子裝置，包括一本體、一蓋體及一所述 之鉸鏈結構，該本體與蓋體藉由所述之鉸鏈結構轉動連接。 相較於習知技術，該鉸鏈結構在第一彈性件之彈力作 用下，凸輪帶動套筒相對於從動件旋轉運動，因而應用該 鉸鏈結構之折疊式電子裝置在使用時，使用者只需單手操 作即可開啓蓋體，操作方便。 8 1298013 【實施方式】 • 請參照圖1，本發明鉸鏈結構適用於一具有本體和蓋 體之折疊型或翻蓋型電子裝置。在本較佳實施方式中，鉸 鏈結構100應用在行動電話200中。該行動電話200包括 一本體202及一蓋體204,該鉸鏈結構100可將該本體202 與蓋體204轉動連接。 請參照圖2及圖3，該鉸鏈結構100包括一主軸10、 一從動件20、一凸輪30、一第一套筒40、一第二套筒50、 一作爲第一彈性件之扭簧60、一作爲第二彈性件之壓簧 65、一墊片70、一卡環73、一銷80及一襯套90。 主軸10包括呈圓柱狀之軸部11及與該軸部11 一端相 連之固定部13。該軸部11於鄰近另一端處設有凹槽15。 該軸部11於鄰近該凹槽15處設有頸部17，該頸部17之 直徑小於該軸部11之直徑。該固定部13用於與該行動電 話200之本體202配合，從而與該本體202保持相對固定。 從動件20設置於軸部11上，且與固定部13相連。該 從動件20可與軸部11 一體成型或單獨成型後固設於軸部 11上。該從動件20包括凸緣21及由該凸緣21沿軸部11 對稱延伸之二突起23。 請同時參照圖4,凸輪30大致爲中空圓柱體，其可套 設於該軸部11上。該凸輪30之第一端爲凸輪面31，其相 對之第二端爲平面。該凸輪面31包括二凹谷311、二平坦 面313以及二位於該凹谷311和平坦面313之間之斜面 315。該凸輪面31可與從動件20之突起23配合。該凸輪 33’在本較佳實施方式 30之外圓周壁上對稱設有二卡合部 中’該卡合部33爲平面。 '一第一套筒40大致爲中空圓柱體，其具有第一端（未標 U:對之第二端（未標示)。該第-套筒40之内壁於 :近其弟-端處，對稱設有二卡合部41，該卡合部41可 相之卡合部33配合而限制第一套筒40與凸輪30 相對轉動。在本較佳實施方式中，該卡合部41爲平面。可 ^理解，該卡合部33、41之形狀及數量均可改變。在形狀 土’該卡合部33、41可爲凸起與凹進之配合或其他卡合配 。。在數量上，該卡合部33、41可爲—個、三個或更多， :卡合部33、41之數量相對應。在其中一卡合部41上開 =有凹槽43。該第-套筒40之外壁於鄰近其第二端處， 又有卡固邛45。在本較佳實施方式中，該卡固部45爲多 邊形狀。 一第二套冑50大致爲中空圓柱體，其具有開口端（未標 一、）及相對之半封閉端（未標示）。該第二套筒5〇之内壁 於岫近其開口端處，設有卡固部51，該卡固部5^可與第 一套筒40之卡固部45配合而將第二套筒5〇與第一套筒 40固連在一起。在本較佳實施方式中，該卡固部爲多 邊形狀。可以理解，該卡固部45、51之形狀可改變，其可 爲凸起與凹進之配合或其他卡固配合。該第二套筒50之外 壁於鄰近其半封閉端處，設有固持部53。該固持部53用 於與該行動電話200之蓋體204配合，從而與該蓋體204 保持相對固定。在本較佳實施方式中，該固持部53爲多邊 1298013 狀。可以理解’該固持部53可爲其他形狀，如凸起或凹 進1該第二套筒50之半封閉端處設有c形環狀之滑槽55, 該滑槽55之角度範圍爲160-170度。 "’ 山扭簧60爲螺旋狀，其具有第一端臂61和相對之第二 端臂63。該第一端臂61可容置於第一套筒扣之凹槽们 内。該第二端臂63可穿過第二套筒50之滑槽55。 壓黃65爲螺旋狀，其一端與凸輪3〇之第二端抵接， _其相對之另一端抵接於墊片70。可以理解，該壓簀65可 由其他彈性件替代，如彈性海綿。 塾片70具有第一端面（未標示）及相對之第二端面（未 標示），該第一端面抵接於壓簧65及第二套筒5〇之半封閉 端，該弟二端面抵接於卡環73。 卡環73爲C形環，其厚度與主轴1〇之頸部之寬度 相對應，其可容置於該頸部17内，並抵接該墊片7〇以固 定該墊片70。 • 銷8〇爲細長狀之圓柱體。可以理解，該銷8〇亦可爲 其他形狀，如方形體。 襯套90大致爲中空圓柱狀。該襯套9〇具有貫通其中 部之階梯狀之通道91。該襯套90於鄰近其外壁處設有開 孔93 ’該開孔93平形於該襯套90之軸線且貫通該襯套 90 °扭簧60之第二端臂63穿過第二套筒50之滑槽55後 容置於開孔93内。該襯套90 —端之外壁上設有二對稱之 切面95 °該襯套90設有銷孔97，該銷孔97連通二切面 95並與通道91相通。該銷孔97之形狀及大小與銷80相 11 1298013 對應。 請同時參照圖5 ’組裝時’將扭菁60之一端自第一套 筒40之第二端插入該第一套筒40内，其另一端自第二套 筒50之開口端插入該第二套筒50内。該第一套筒40與第 二套筒50藉由卡固部45、51配合而相對固定，扭簧60 之第一端臂61容置於第一套筒40之凹槽43内，其第二端 臂63穿過第二套筒50之滑槽55，扭簧60收容於第一套 0 筒40及第二套筒50内並成爲一組合體。將主軸10之軸部 11依次穿過凸輪30、壓簧65、第一套筒40與第二套筒50 及扭簧60之組合體、墊片70,並將卡環73卡設於軸部11 之頸部17。凸輪30與第一套筒40藉由卡合部33、41配 合而限制該凸輪30與第一套筒40相對轉動。第一套筒40 之第一端抵接從動件20之凸緣21。壓簧65具有一定之預 壓力，其一端抵接於凸輪30之第二端，另一端抵接於墊片 70之第一端面。卡環73抵接該墊片70之第二端面。將主 _ 軸10之轴部11穿過襯套90，並使扭簀60之第二端臂63 容置於襯套90之開孔93内。旋轉襯套90，將銷80插入 由襯套90之銷孔97及軸部11之凹槽15所共同形成之容 置空間内，使襯套90與主轴10相對固定。扭簧60之第二 端臂63與襯套90 —起旋轉，故該扭簧60具有一定之預扭 力。該鉸鏈結構100裝配成爲一整體。將主軸10之固定部 13與行動電話200之本體202相連，第二套筒50之固持 部53與行動電話200之蓋體204相連，即安裝完畢。 該行動電話200在初始狀態時，蓋體204與本體202 12 1298013 相對閉合，扭簧60具有一定之預扭力，作用於第一套筒 40上，並傳遞給凸輪30，而使凸輪30相對於從動件20 具有旋轉趨勢，但由於設在行動電話200上之磁力結構或 卡鈎等控制件之限制，凸輪30與從動件20保持相對固定。 當需要開啓行動電話200之蓋體204時，釋放該控制 件，扭簧60作用於第一套筒40之預扭力傳遞給凸輪30, 而使凸輪30相對於從動件20之突起23旋轉運動。即，突 ▲ 起23自凸輪30之凹谷311處經斜面315向平面313方向 運動。在該突起23於平面313上進行旋轉運動之前，凸輪 30在旋轉之同時作軸向移動而壓縮壓簧65。壓簧65積蓄 壓力。此時，凸輪30帶動第一套筒40、第二套筒50相對 於主軸10旋轉運動。扭簧60之第一端臂61與第一套筒 40 —起運動，其第二端臂63在第二套筒50之滑槽55内 滑動。因該第二套筒50與行動電話200之蓋體204相連， 故該第二套筒50帶動蓋體204旋轉，蓋體204相對於本體 _ 202即自動彈開。關閉行動電話200之蓋體204之過程與 上述開啓過程相反。外力作用於蓋體204，第二套筒50帶 動第一套筒40旋轉運動，第一套筒40帶動凸輪30旋轉運 動。此時，扭簧60積蓄扭力，壓簧65釋放壓力，從動件 20之突起23重新回到凸輪30之凹谷311處，行動電話200 之蓋體204相對於本體202關閉。 可以理解，墊片70及卡環73皆可省略，而使壓簧65 之一端直接抵接於襯套90。可以理解，銷80亦可省略， 而將襯套90直接卡設於主轴10之凹槽内，從而與主轴10 13 1298013 保持相對固定。可以理解，該第一套筒40與第二套筒50 可一體成型而成爲一整體。 ‘ 综上所述，本發明符合發明專利要件，爰依法提出專 利申請。惟，以上所述者僅為本發明之較佳實施例，舉凡 熟悉本案技藝之人士，在援依本案發明精神所作之等效修 飾或變化，皆應包含於以下之申請專利範圍内。 【圖式簡單說明】 圖1係本發明較佳實施方式之折疊式行動電話之立體 圖； 圖2係本發明較佳實施方式之鉸鏈結構之組裝圖； 圖3係本發明較佳實施方式之鉸鏈結構之分解圖； 圖4係本發明較佳實施方式之鉸鏈結構之另一角度分 解圖；及 圖5係圖2沿V-V線之剖視圖。 【主要元件符號說明】 行動電話 200 本體 202 蓋體 204 鼓鏈結構 100 主軸 10 軸部 11 固定部 13 頸部 17 從動件 20 凸緣 21 突起 23 凸輪 30 凸輪面 31 凹谷 311 平坦面 313 斜面 315 第一套筒 40 卡合部 33、41 14 1298013 凹槽 15、43 第二套筒 50 咔固部 45、51 固持部 53 请槽 55 扭簧 60 第一端臂 61 第二端臂 63 壓簧 65 墊片 70 卡環 73 銷 80 襯套 90 通道 91 開孔 93 切面 95 銷孔 971298013 [Summary of the Invention] It is necessary to provide a hinge structure with an automatic opening function. In addition, it is necessary to provide a folding electronic mounting hinge structure using the hinge structure, including - a main shaft, a follower, a cam, a sleeve, a - elastic member, a second elastic member and a bushing . The follower has a dog. The follower is fixed to the end of the spindle. The cam has a cam surface and an engaging portion on the outer wall thereof. The cam sleeve is sleeved on the main shaft and abuts against the driven member. The inner wall of the arm has a groove and a engaging portion, and the sleeve is sleeved on the main body. The card σ 4 cooperates with the engaging portion of the cam to restrict the sleeve from rotating relative to the cam. The first elastic member has a first end arm and an opposite second end arm. The first elastic member is sleeved on the main shaft, and the first end arm is received in the groove of the sleeve. The elastic member is sleeved on the main shaft. The end is abutted against the cam so that the cam surface of the cam cooperates with the protrusion of the follower, and the other end abuts against the bushing. The bushing is provided with an opening, and the bushing is fixed to the other end of the main shaft, and the second end arm of the first elastic member is received in the opening. A folding electronic device includes a body, a cover body and a hinge structure, and the body and the cover body are rotatably connected by the hinge structure. Compared with the prior art, the hinge structure rotates the sleeve relative to the driven member under the elastic force of the first elastic member, so that the folding electronic device applying the hinge structure can be used only by the user. The cover can be opened with one hand operation and is easy to operate. 8 1298013 [Embodiment] • Referring to Fig. 1, the hinge structure of the present invention is applied to a folding or flip type electronic device having a body and a cover. In the preferred embodiment, the hinge structure 100 is utilized in the mobile phone 200. The mobile phone 200 includes a body 202 and a cover 204. The hinge structure 100 can rotatably connect the body 202 with the cover 204. Referring to FIG. 2 and FIG. 3 , the hinge structure 100 includes a main shaft 10 , a follower 20 , a cam 30 , a first sleeve 40 , a second sleeve 50 , and a torsion spring as a first elastic member . 60. A compression spring 65 as a second elastic member, a gasket 70, a snap ring 73, a pin 80, and a bushing 90. The main shaft 10 includes a cylindrical shaft portion 11 and a fixing portion 13 connected to one end of the shaft portion 11. The shaft portion 11 is provided with a groove 15 adjacent to the other end. The shaft portion 11 is provided adjacent to the recess 15 with a neck portion 17 having a diameter smaller than the diameter of the shaft portion 11. The fixing portion 13 is configured to cooperate with the body 202 of the mobile phone 200 so as to be relatively fixed to the body 202. The follower 20 is disposed on the shaft portion 11 and is connected to the fixing portion 13. The follower 20 can be integrally formed with the shaft portion 11 or separately molded and then fixed to the shaft portion 11. The follower 20 includes a flange 21 and two protrusions 23 extending symmetrically along the shaft portion 11 by the flange 21. Referring also to Figure 4, the cam 30 is generally a hollow cylinder that can be placed over the shaft portion 11. The first end of the cam 30 is a cam surface 31 whose opposite second end is planar. The cam surface 31 includes two valleys 311, two flat surfaces 313, and two slopes 315 between the valleys 311 and the flat surfaces 313. The cam surface 31 can cooperate with the projection 23 of the follower 20. The cam 33' is symmetrically provided with two engaging portions on the outer circumferential wall of the preferred embodiment 30. The engaging portion 33 is a flat surface. 'A first sleeve 40 is substantially a hollow cylinder having a first end (not labeled U: a second end opposite thereto (not labeled). The inner wall of the first sleeve 40 is at: near the other end, The two engaging portions 41 are symmetrically disposed, and the engaging portions 41 can cooperate with the engaging portions 33 to restrict the relative rotation of the first sleeve 40 and the cam 30. In the preferred embodiment, the engaging portion 41 is flat. It can be understood that the shape and the number of the engaging portions 33, 41 can be changed. In the shape soil, the engaging portions 33, 41 can be a convex or concave fit or other engagement. The engaging portions 33, 41 may be one, three or more, and the number of the engaging portions 33, 41 corresponds to each other. One of the engaging portions 41 is opened = there is a groove 43. The first sleeve The outer wall of the cylinder 40 is adjacent to the second end thereof, and has a locking flange 45. In the preferred embodiment, the fastening portion 45 is polygonal. A second sleeve 50 is substantially a hollow cylinder having An open end (not labeled) and an opposite semi-closed end (not shown). The inner wall of the second sleeve 5 is located near the open end thereof, and is provided with a fixing portion 51. With the first The fixing portion 45 of the cylinder 40 cooperates to fix the second sleeve 5〇 with the first sleeve 40. In the preferred embodiment, the fastening portion has a polygonal shape. It can be understood that the fastening portion is The shape of the 45, 51 can be changed, which can be a fit of the protrusion and the recess or other snap fit. The outer wall of the second sleeve 50 is adjacent to the semi-closed end thereof, and is provided with a retaining portion 53. The retaining portion 53 It is used to cooperate with the cover 204 of the mobile phone 200 to be relatively fixed to the cover 204. In the preferred embodiment, the holding portion 53 has a polygonal shape of 1298013. It can be understood that the holding portion 53 can be other A shape, such as a protrusion or a recess 1 , is provided at the semi-closed end of the second sleeve 50 with a c-shaped annular groove 55 having an angle ranging from 160 to 170 degrees. 60 is a spiral shape having a first end arm 61 and an opposite second end arm 63. The first end arm 61 can be received in the recess of the first sleeve buckle. The second end arm 63 can be worn. The sliding groove 55 of the second sleeve 50. The pressing yellow 65 is spiral, and one end thereof abuts against the second end of the cam 3〇, and the other end thereof abuts against the spacer 70. It can be understood that the pressure 65 can be replaced by other elastic members, such as an elastic sponge. The cymbal 70 has a first end surface (not shown) and a second end surface (not shown) opposite to the compression spring 65. And a semi-closed end of the second sleeve 5, the two end faces abut against the snap ring 73. The snap ring 73 is a C-shaped ring, the thickness of which corresponds to the width of the neck of the main shaft 1〇, which can be accommodated The neck 17 is abutted against the spacer 7 to fix the spacer 70. • The pin 8 is an elongated cylinder. It can be understood that the pin 8 can also have other shapes, such as a square body. The sleeve 90 is substantially hollow cylindrical. The bushing 9 has a stepped passage 91 extending through the middle portion thereof. The bushing 90 is provided with an opening 93 adjacent to its outer wall. The opening 93 is flat on the axis of the bushing 90 and penetrates the bushing 90. The second end arm 63 of the torsion spring 60 passes through the second sleeve 50. The chute 55 is received in the opening 93. The outer wall of the bushing 90 is provided with two symmetrical cutting faces 95. The bushing 90 is provided with a pin hole 97 which communicates with the two cutting faces 95 and communicates with the passage 91. The pin hole 97 has a shape and size corresponding to the pin 80 phase 11 1298013. Please simultaneously insert one end of the twisted cyanine 60 into the first sleeve 40 from the second end of the first sleeve 40 and the other end into the second end from the open end of the second sleeve 50. Inside the sleeve 50. The first sleeve 40 and the second sleeve 50 are relatively fixed by the engagement of the fastening portions 45, 51. The first end arm 61 of the torsion spring 60 is received in the recess 43 of the first sleeve 40. The two end arms 63 pass through the sliding grooves 55 of the second sleeve 50. The torsion springs 60 are received in the first sleeve 0 cylinder 40 and the second sleeve 50 and form an assembly. The shaft portion 11 of the main shaft 10 is sequentially passed through the cam 30, the compression spring 65, the combination of the first sleeve 40 and the second sleeve 50 and the torsion spring 60, the gasket 70, and the snap ring 73 is clamped to the shaft portion. 11 neck 17 The cam 30 and the first sleeve 40 are engaged by the engaging portions 33, 41 to restrict the cam 30 from rotating relative to the first sleeve 40. The first end of the first sleeve 40 abuts the flange 21 of the follower 20. The compression spring 65 has a certain pre-pressure, one end of which abuts against the second end of the cam 30 and the other end abuts against the first end surface of the spacer 70. The snap ring 73 abuts against the second end surface of the spacer 70. The shaft portion 11 of the main shaft 10 is passed through the bushing 90, and the second end arm 63 of the twist 60 is received in the opening 93 of the bushing 90. The bushing 90 is rotated to insert the pin 80 into the accommodating space formed by the pin hole 97 of the bushing 90 and the groove 15 of the shaft portion 11, so that the bushing 90 is fixed to the main shaft 10. The second end arm 63 of the torsion spring 60 rotates with the bushing 90 so that the torsion spring 60 has a certain pre-torque. The hinge structure 100 is assembled as a whole. The fixing portion 13 of the main shaft 10 is connected to the body 202 of the mobile phone 200, and the holding portion 53 of the second sleeve 50 is connected to the cover 204 of the mobile phone 200, that is, the installation is completed. When the mobile phone 200 is in the initial state, the cover 204 is relatively closed with the body 202 12 1298013, and the torsion spring 60 has a certain pre-torsion force acting on the first sleeve 40 and transmitting to the cam 30, so that the cam 30 is opposite to the cam 30. The follower 20 has a tendency to rotate, but the cam 30 and the follower 20 remain relatively fixed due to the limitation of the magnetic structure provided on the mobile phone 200 or the control member such as the hook. When the cover 204 of the mobile phone 200 needs to be opened, the control member is released, and the pre-torsion force of the torsion spring 60 acting on the first sleeve 40 is transmitted to the cam 30, and the cam 30 is rotated relative to the protrusion 23 of the follower 20. . That is, the protrusion 23 moves from the valley 311 of the cam 30 toward the plane 313 via the slope 315. Before the projection 23 is rotated on the plane 313, the cam 30 is axially moved while rotating to compress the compression spring 65. The compression spring 65 accumulates pressure. At this time, the cam 30 drives the first sleeve 40 and the second sleeve 50 to rotate relative to the main shaft 10. The first end arm 61 of the torsion spring 60 moves together with the first sleeve 40, and the second end arm 63 slides within the chute 55 of the second sleeve 50. Since the second sleeve 50 is connected to the cover 204 of the mobile phone 200, the second sleeve 50 drives the cover 204 to rotate, and the cover 204 automatically pops up relative to the body 202. The process of closing the cover 204 of the mobile phone 200 is the reverse of the above opening process. An external force acts on the cover 204, and the second sleeve 50 drives the first sleeve 40 to rotate. The first sleeve 40 drives the cam 30 to rotate. At this time, the torsion spring 60 accumulates the torsion force, the compression spring 65 releases the pressure, and the projection 23 of the follower member 20 returns to the valley 311 of the cam 30, and the cover 204 of the mobile phone 200 is closed with respect to the body 202. It can be understood that the spacer 70 and the snap ring 73 can be omitted, and one end of the compression spring 65 directly abuts against the bushing 90. It can be understood that the pin 80 can also be omitted, and the bushing 90 is directly clamped in the groove of the main shaft 10 so as to be relatively fixed with the main shaft 10 13 1298013. It can be understood that the first sleeve 40 and the second sleeve 50 can be integrally formed as a whole. ‘ In summary, the present invention complies with the patent requirements of the invention and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a folding mobile phone according to a preferred embodiment of the present invention; FIG. 2 is an assembled view of a hinge structure according to a preferred embodiment of the present invention; FIG. 3 is a hinge of a preferred embodiment of the present invention; 4 is an exploded perspective view of a hinge structure according to a preferred embodiment of the present invention; and FIG. 5 is a cross-sectional view taken along line VV of FIG. [Description of main component symbols] Mobile phone 200 Main body 202 Cover body 204 Drum chain structure 100 Spindle 10 Shaft part 11 Fixing part 13 Neck 17 Follower 20 Flange 21 Protrusion 23 Cam 30 Cam surface 31 Rectangular 311 Flat surface 313 Bevel 315 first sleeve 40 engaging portion 33, 41 14 1298013 groove 15, 43 second sleeve 50 tamping portion 45, 51 holding portion 53 groove 55 torsion spring 60 first end arm 61 second end arm 63 pressure Spring 65 washer 70 snap ring 73 pin 80 bushing 90 channel 91 opening 93 cutting surface 95 pin hole 97
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