100年07月19日核正替换頁 1352162 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明係關於鉸鏈結構，尤其係駢於一種用於折疊型攜 \ 帶式電子裝置中之鉸鏈結構。 【先前技術】 [0002] 隨著無線通訊與資訊處理技術之發展，行動電話、PDA等 攜帶式電子裝置競相湧現，令消費者可隨時隨地充分享 ^ 受高科技帶來之種種便利，而其中可折疊攜帶式電子裝 置因其結構玲瓏新穎而為廣大消費者所青睞。 · [0003] 如今生產廠商正努力減小可折疊攜帶式電子裝置之體積 、尺寸及重量以滿足廣大消費者之要求。可折疊攜帶式 電子裝置通常藉由鉸鏈結構連接本體及翻蓋。鉸鏈結構 通常包括主軸、凸輪、凸輪隨動部及彈簧，彈簧套於主 軸上，凸輪、凸輪隨動部之一與彈簧直接接觸，凸輪與 凸輪隨動部在彈簧彈性作用力下，始終保持接觸並且相 配合。 [0004] 一種現有鉸鏈結構，包括一固定連接在移動電話本體的 外殼體，嵌入外殼中的彈簧，一旋轉凸輪桿及一具從動 突起部及鉸接構件的主軸，所述旋轉凸輪桿容置於所述 外殼，且與外殼相配合，彈簧一端與外殼内壁接觸，另 一端抵接於旋轉凸輪桿一端，該主軸依次穿過所述旋轉 凸輪桿、彈簧並藉由一卡環使其不脫落於外殼。該主軸 藉由鉸接構件固定連接於移動電話的蓋體上，所述旋轉 凸輪桿在彈簧作用下，藉由其凸輪與主軸的從動突起部 實現行動電話的開啓與關閉。 094117366 表單編號A0101 第4頁/共22頁 1003263181-0 1.352162 100年07月19日修正替换頁 [0005] 以上所述鉸鏈結構雖能實現移動電話的開啓與關閉，惟 其彈簧與其接觸的部件即旋轉凸輪桿之間因相對轉動而 産生的摩擦均爲滑動摩擦，能量損失較爲嚴重。此外， 由於彈簧與旋轉凸輪桿之間的摩擦均爲滑動摩擦，由此 將降低彈簧與其接觸的部件旋轉凸輪桿的使用壽命。 [0006] 有鑑於此，提供一種能量損失減少，提高彈簧以及與其 相接觸部件的使用壽命的鉸鏈結構。 【發明内容】 [0007] 鑒於以上現有技術之缺點，有必要提供一種降低現有鉸 鏈結構的能量損失問題，降低彈性件以及與其相接觸部 件之摩擦，使用壽命較長之新型鉸鏈結構。 [0008] —種敍鏈結構，包括一主軸、一隨動部、一凸輪、一減 摩體及一彈性件。該主軸一端具止轉部，該隨動部與主 軸連接。該凸輪為一柱狀體，包括一凸輪面及貫穿該凸 輪之凸輪孔。該凸輪及彈性件依次套於主軸上且凸輪之 凸輪面於彈性件作用下與隨動部相配合，所述減摩體套 於主軸上，其包括一第一擋板、複數滚珠及一第二擋板 ，複數滚珠容置於第一擋板與第二擋板之間，第一擋板 一端與凸輪抵接，第二擋板與彈性件抵接。 [0009] 相較習知技術，所述鉸鏈結構藉由在彈性件與凸輪之間 設置一減摩體，使彈性件與凸輪之摩擦爲滚動摩擦，由 此減少爲克服現有技術中彈性件與凸輪直接接觸產生之 滑動摩擦導致之能量損耗。另外，藉由避免所述彈性件 與凸輪之直接接觸産生之滑動摩擦，大大提高鉸鏈結構 之使用壽命。 094117366 表單編號 A0101 第 5 頁/共 22 頁 100326318卜0 1352162 100年07月19日梭正替換頁 [0010] 另一較鍵結構，包括一主轴、一隨動部、一凸輪、一減 摩體及一彈性件。該主軸一端具止轉部，另一端設置一 凸緣部。該隨動部與主軸連接。該凸輪為一柱狀體，包 括一凸輪面及貫穿該凸輪之凸輪孔，該彈性件一端抵接 於凸輪。該凸輪及彈性件依次套於主軸上且凸輪之凸輪 面於彈性件作用下與隨動部相配合，所述減摩體套於主 軸上，包括一第一擋板、複數滾珠及一第二擋板，複數 ？ 滾珠容置於第一擋板與第二擋板之間，第一擋板與凸緣 部抵接，第二擋板與彈性件抵接。 Φ [0011] 相較習知技術，所述鉸鏈結構藉由在彈性件與主軸之凸 緣部之間設置一減摩體，使彈性件與主軸之凸緣部之間 之摩擦轉變為爲滾動摩擦，由此減少爲克服現有技術中 彈性件與主軸之凸緣部之直接接觸之產生滑動摩擦而導 致之能量損耗。另外，藉由避免所述彈性件與主軸之凸 緣部直接接觸産生之滑動摩擦，提高鉸鏈結構之使用壽 命。 【實施方式】 [0012] 本發明鉸鏈結構適用於一具本體和蓋體之折疊型或翻蓋 型攜帶式電子裝置（圖未示）。本實施例以其應用於行動 電話200 (參閱第七圖）為例加以說明，所述行動電話 200包括本體202及蓋體204。 [0013] 請參閱第一圖及第二圖，本發明較佳實施例之鉸鏈結構 100包括一主軸10、一凸輪20、一減摩體（未標示）、一 彈簧60及卡環70 »該減摩體包括一第一擋板30、複數滚 珠40及第二擋板50。 094117366 表單编號A0101 第6頁/共22頁 1003263181-0 1352162 100年07月19日按正替换百 [0014] 主軸10包括設置於一端之止轉部12，一與止轉部12鄰接 設置之隨動部及設置於另一端之凸緣部14。該止轉部12 用以與行動電話本體202配合，隨動部包括一柱狀部122 及由該柱狀部122沿主軸10之軸向對稱延伸之指形件124 ，該指形件124具一頂部126。該隨動部與凸緣部14之間 爲一軸部16，該軸部16靠近凸緣部14處有一直徑較小之 小軸部1 6 2。 [0015] 凸輪20爲一柱狀體，其上開設一貫通端面之凸輪孔22， • 凸輪20 —端設有凸輪面24，另一端係形成一平坦端面26 。所述凸輪面24包括二對稱設置之凹谷242、二對稱設置 之凸峰244及形成於凹谷242及凸峰244之間之斜面246。 凸輪20之外圓周壁設置一突起28，突起28沿凸輪20之外 圓周壁縱向延伸一定距離，用以與行動電話蓋體204配合 〇 [0016] 請參閱第三圖及第四圖，第一檔板30爲圓環形，其包括 • 一底部32及由底部32之外圓週朝一表面方向彎折形成之 彎折部34，底部32中心開設一通孔36 »彎折部34與底部 32之内表面共同形成一容置槽（未標示），用以容置複 數滚珠40。彎折部32之端面向外延伸一卡持突起342。底 部32之外表面抵接於凸輪20之平坦端面26。 [0017] 複數滾珠40形成一環形滾動體。 [0018] 第二擋板50爲圓環形，其包括一底部52及由底部52之外 圓週向一表面彎折形成之彎折部54，彎折部54面向第一 擋板30之彎折部32，底部52中心開設一通孔56。彎折部 094117366 表單編號A0101 第7頁/共22頁 1003263181-0 1352162 [0019] [0020] [0021] 100年07月19日替換頁 54與底部52之内表面共同形成一容置槽（未標示），用 以容置複數滾珠40。彎折部52之端面向内延伸一環形卡 鉤542，用以與第一擋板30之卡持突起342相卡合。底部 52之外表面抵接於彈簧60。 彈簧60爲一螺旋彈簧，其一端與第二擋板5〇之底部52之 外表面抵接，另一端抵接於卡環7〇。 請參閱第五圖及第六圖’組裝時，首先將滾珠4〇容置於 第一擋板30之容置槽38内，然後第二擋板5〇藉由環形卡 < 鉤542與第一擋板30之卡持突起342之卡合與第一擋板30 相卡持，由此形成一容置於滾珠4〇之容置腔（未標示） ，同時防止滾珠40由第一擋板30内脫出，從而形成一減 摩體。之後，主軸10依次穿過凸輪2〇之凸輪孔22、第一 擋板30之中心孔36、第二擋板50之中心孔56、彈簧60及 卡環70 ’第二擋板50之底部52之外表面與彈簧60相抵接 ’凸輪20上之凸輪面24在彈簧60之作用下與主軸10上之 隨動部之指形件124之頂部126始終保持接觸狀態，彈簧 < 60之另一端與卡環70相抵接，卡環70與主軸1〇上之凸緣 部14抵擋配合。 請同時參閱第七圖，使用本發明鉸鏈結構時，凸輪20上 之突起28與行動電話200之蓋體204配合，主轴1〇上之止 轉部12與行動電話200之本體202配合，蓋體204完全關 閉時，隨動部之指形件124之頂部126位於凸輪20之凹谷 242且與其相配合，此時彈簧60具有一定預壓力，而使二 者處於穩定狀態。 094117366 表單编號A0101 第8頁/共22頁 1003263181-0 1352162 100年07月19日核正替換頁 [0022] 開啓蓋體204時，蓋體204於外力作用下帶動凸輪20轉動 ，同時主軸10上之隨動部相對凸輪20轉動，指形件124沿 凸輪面24之一斜面246滑動，凸輪20於主轴10上轉動同 時作直線移動推頂第一擋板30之同時帶動第一擋板30相 對於第二擋板50滑動，並壓縮彈簧60，同時滚珠40相對 於第一擋板30滾動，由於第一擋板30與第二擋板50藉由 滾珠40相抵接，此時兩者之間因相對轉動僅産生滾動摩 擦，當隨動部之指形件124之頂部126於凸輪面24上滑至 • 凸峰244時，彈簧60被壓縮至最短，積累彈性勢能最大， 此爲一不穩定狀態，繼續施力於蓋體使隨動部之指形件 124越過凸峰254，釋放蓋體，彈簧60累積之彈性勢能使 指形件124沿凸輪20之另一斜面246迅速滑動，之後蓋體 204將於行動電話本體202之抵持下處於一穩固位置，二 者位置關係重新處於穩定狀態，此時蓋體完全打開。關 閉蓋體時，指形件122之行程與開啓時相反。 [0023] • 本發明鉸鏈結構隨動部可不設置在主軸10上，即不與主 軸10 —體成形，而爲一具軸孔和凸輪面或指形件之隨動 部。 [0024] 當凸輪20與彈簧60無相對轉動，而主軸10與彈簧60有相 對轉動時，可將由第一擋板30、滾珠40及第二擋板50形 成之減摩體設置於彈簧60與卡環70之間，以此實現彈簧 6〇與卡環70和主軸10將不直接接觸，同時彈簧60與卡環 70之間因減摩體之作用僅具滚動摩擦。 [0025] 所述減摩體可由其他結構替代，所述滚珠40可由滚輪代 替。彈簧60可由其他彈性件如海棉替代。另，卡環70可 094117366 表單編號A0101 第9頁/共22頁 100326318卜0 1352162 100年07月19日修正替換頁 省卻，而使彈簧60直接抵接於主軸10之凸緣部14。所述 凸輪20之突起28可爲複數個，僅需與其相配合之該體上 開設相應數目之凹槽即可，所述突起28亦可由止轉槽代 替。 [0026] 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】 [0027] 第一圖係本發明鉸鏈結構較佳實施例之一方向立體分解 圖； [0028] 第二圖係本發明鉸鏈結構較佳實施例之另一方向之立體 分解圖； [0029] 第三圖係本發明鉸鏈結構較佳實施例之減摩體之一方向 之立體分解圖； [0030] 第四圖係本發明鉸鏈結構較佳實施例之減摩體之另一方 向之立體分解圖； [0031] 第五圖係本發明鉸鏈結構較佳實施例之減摩體之組裝立 體圖； [0032] 第六圖係本發明鉸鏈結構較佳實施例之組裝立體圖； [0033] 第七圖係應用本發明鉸鏈結構較佳實施例之攜帶式電子 裝置立體圖。 【主要元件符號說明】 094117366 表單編號A0101 第10頁/共22頁 1003263181-0 1352162 100年07月19日修正替换頁 [0034] 鉸鏈結構：100 [0035] 主轴：10 ' [0036] 止轉部：12 ' [0037] 凸緣部：14 [0038] 柱狀部：122 [0039] 指形件：124 φ [0040] 頂部：126 [0041] 轴部：16 [0042] 小軸部：162 [0043] 凸輪：20 [0044] 凸輪孔：22 [0045] 凸輪面：24 • [0046] 凹谷：242 [0047] 凸峰：244 [0048] 斜面：246 [0049] 平坦端面：26 [0050] 突起：28 [0051] 第一擋板：30 [0052] 底部：32 094117366 表單編號A0101 第11頁/共22頁 1003263181-0 1352162 [0053] 彎折部：34 [0054] 卡持突出部：342 [0055] 中心孔：36、56 [0056] 第二擋板：50 [0057] 滾珠：40 [0058] 彎折部：54 [0059] 底部：52 [0060] 彈簧：60 [0061] 環形卡鉤：542 [0062] 行動電話：200 [0063] 卡環：70 [0064] 蓋體：204 [0065] 本體：202 094117366 表單編號A0101 第12頁/共22頁 100年07月19日修正替换頁 1003263181-0July 19, 100, Nuclear Replacement Page 1352162 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a hinge structure, particularly to a folding type portable/belt type electronic device. Hinge structure. [Previous Technology] [0002] With the development of wireless communication and information processing technology, portable electronic devices such as mobile phones and PDAs are competing to emerge, so that consumers can share and enjoy the convenience brought by high technology anytime and anywhere. The foldable portable electronic device is favored by consumers because of its exquisite structure. · [0003] Today's manufacturers are working to reduce the size, size and weight of foldable portable electronic devices to meet the needs of consumers. The foldable portable electronic device usually connects the body and the flip cover by a hinge structure. The hinge structure usually comprises a main shaft, a cam, a cam follower and a spring. The spring is sleeved on the main shaft, and one of the cam and the cam follower is in direct contact with the spring, and the cam and the cam follower are always in contact under the spring elastic force. And match. [0004] A conventional hinge structure includes an outer casing fixedly coupled to a body of a mobile phone, a spring embedded in the casing, a rotating cam lever and a main shaft having a driven protrusion and a hinge member, the rotating cam lever receiving Cooperating with the outer casing, one end of the spring is in contact with the inner wall of the outer casing, and the other end abuts against one end of the rotating cam rod, the main shaft sequentially passes through the rotating cam rod and the spring and is not detached by a snap ring In the outer casing. The main shaft is fixedly coupled to the cover of the mobile telephone by a hinge member which, under the action of a spring, realizes the opening and closing of the mobile phone by the cam and the driven projection of the main shaft. 094117366 Form No. A0101 Page 4 of 22 1003263181-0 1.352162 Correction Replacement Page, July 19, 2001 [0005] Although the hinge structure described above can realize the opening and closing of the mobile phone, the parts whose springs are in contact with it rotate. The friction between the cam rods due to relative rotation is sliding friction, and the energy loss is more serious. In addition, since the friction between the spring and the rotating cam lever is a sliding friction, the life of the rotating cam lever of the member with which the spring is in contact is reduced. In view of this, there is provided a hinge structure that reduces energy loss and increases the service life of the spring and the components in contact therewith. SUMMARY OF THE INVENTION [0007] In view of the above disadvantages of the prior art, it is necessary to provide a novel hinge structure that reduces the energy loss problem of the existing hinge structure, reduces the friction between the elastic member and the contact member thereof, and has a long service life. [0008] A chain structure includes a main shaft, a follower portion, a cam, a friction reducing body and an elastic member. The spindle has a rotation stop at one end, and the follower is connected to the main shaft. The cam is a cylindrical body including a cam surface and a cam hole penetrating the cam. The cam and the elastic member are sequentially sleeved on the main shaft, and the cam surface of the cam cooperates with the follower portion under the action of the elastic member, and the friction reducing body is sleeved on the main shaft, and includes a first baffle, a plurality of balls and a first The second baffle is disposed between the first baffle and the second baffle. One end of the first baffle is in contact with the cam, and the second baffle is in contact with the elastic member. [0009] Compared with the prior art, the hinge structure is provided with a friction reducing body between the elastic member and the cam, so that the friction between the elastic member and the cam is rolling friction, thereby reducing the overcoming of the elastic member in the prior art. The energy loss caused by the sliding friction generated by the direct contact of the cam. In addition, the service life of the hinge structure is greatly improved by avoiding the sliding friction generated by the direct contact of the elastic member with the cam. 094117366 Form No. A0101 Page 5 of 22 100326318 Bu 0 1352162 July 19, 2014 Shuttle replacement page [0010] Another key structure, including a spindle, a follower, a cam, a friction reducing body And an elastic member. The main shaft has a rotation stop at one end and a flange portion at the other end. The follower is connected to the main shaft. The cam is a cylindrical body including a cam surface and a cam hole penetrating the cam, and one end of the elastic member abuts against the cam. The cam and the elastic member are sequentially sleeved on the main shaft, and the cam surface of the cam cooperates with the follower portion under the action of the elastic member, and the friction reducing body is sleeved on the main shaft, and includes a first baffle, a plurality of balls and a second Baffle, plural? The ball is received between the first baffle and the second baffle, the first baffle abuts the flange portion, and the second baffle abuts the elastic member. [0011] Compared with the prior art, the hinge structure converts the friction between the elastic member and the flange portion of the main shaft into a rolling by providing a friction reducing body between the elastic member and the flange portion of the main shaft. The friction, thereby reducing the energy loss caused by the sliding friction caused by the direct contact of the elastic member with the flange portion of the main shaft in the prior art. Further, by avoiding the sliding friction generated by the direct contact of the elastic member with the flange portion of the main shaft, the life of the hinge structure is improved. [Embodiment] The hinge structure of the present invention is applicable to a folding or flip type portable electronic device (not shown) having a body and a cover. This embodiment is described by taking it as an example for application to the mobile phone 200 (refer to the seventh figure). The mobile phone 200 includes a body 202 and a cover 204. [0013] Referring to the first and second figures, the hinge structure 100 of the preferred embodiment of the present invention includes a main shaft 10, a cam 20, a friction reducing body (not shown), a spring 60 and a snap ring 70 » The friction reducing body includes a first baffle 30, a plurality of balls 40, and a second baffle 50. 094117366 Form No. A0101 Page 6 of 22 1003263181-0 1352162 July 19th, 100th, according to positive replacement [0014] The main shaft 10 includes a rotation stop 12 disposed at one end, one adjacent to the rotation stop 12 The follower portion and the flange portion 14 provided at the other end. The rotation preventing portion 12 is configured to cooperate with the mobile phone body 202. The following portion includes a column portion 122 and a finger 124 extending symmetrically from the column portion 122 along the axial direction of the main shaft 10, the finger member 124 having A top 126. Between the follower portion and the flange portion 14, a shaft portion 16 is formed, and the shaft portion 16 is adjacent to the flange portion 14 with a small shaft portion 162 having a small diameter. [0015] The cam 20 is a columnar body having a cam hole 22 extending through the end surface. The cam 20 is provided with a cam surface 24 at its end and a flat end surface 26 at the other end. The cam surface 24 includes two symmetrically disposed valleys 242, two symmetrically disposed peaks 244, and a slope 246 formed between the valleys 242 and the peaks 244. The outer circumferential wall of the cam 20 is provided with a protrusion 28 extending longitudinally along the outer circumferential wall of the cam 20 for engaging with the mobile phone cover 204. [0016] Please refer to the third and fourth figures, first The baffle 30 has a circular shape and includes a bottom portion 32 and a bent portion 34 formed by bending the outer circumference of the bottom portion 32 toward a surface. The bottom portion 32 defines a through hole 36 in the center of the bottom portion 32 and the bottom portion 32. The surfaces together form a receiving groove (not shown) for accommodating the plurality of balls 40. A latching protrusion 342 extends outwardly from the end surface of the bent portion 32. The outer surface of the bottom portion 32 abuts against the flat end surface 26 of the cam 20. [0017] The plurality of balls 40 form an annular rolling body. [0018] The second baffle 50 is annular, and includes a bottom portion 52 and a bent portion 54 formed by bending the outer circumference of the bottom portion 52 toward a surface. The bent portion 54 is bent toward the first baffle 30. In the portion 32, a through hole 56 is defined in the center of the bottom portion 52. Bending 094117366 Form No. A0101 Page 7 of 22 1003263181-0 1352162 [0020] [0021] The replacement page 54 of July 19, 100, together with the inner surface of the bottom 52 forms a receiving groove (not Marked) for accommodating a plurality of balls 40. An end of the bent portion 52 extends inwardly with an annular hook 542 for engaging with the catching projection 342 of the first baffle 30. The outer surface of the bottom portion 52 abuts against the spring 60. The spring 60 is a coil spring having one end abutting against the outer surface of the bottom portion 52 of the second shutter 5, and the other end abutting against the snap ring 7''. Please refer to FIG. 5 and FIG. 6 'Assembling, firstly, the ball 4 is placed in the receiving groove 38 of the first baffle 30, and then the second baffle 5 is replaced by a ring card < The engagement of the latching protrusion 342 of the baffle 30 is engaged with the first baffle 30, thereby forming a receiving cavity (not labeled) accommodated in the ball 4〇, while preventing the ball 40 from being blocked by the first baffle 30 is taken out to form a friction reducing body. Thereafter, the main shaft 10 sequentially passes through the cam hole 22 of the cam 2, the center hole 36 of the first baffle 30, the center hole 56 of the second baffle 50, the spring 60, and the snap ring 70' the bottom 52 of the second baffle 50 The outer surface abuts against the spring 60. The cam surface 24 on the cam 20 is in constant contact with the top 126 of the finger 124 of the follower portion on the main shaft 10 by the action of the spring 60. The other end of the spring < 60 Abutting against the snap ring 70, the snap ring 70 is in abutment with the flange portion 14 on the main shaft 1〇. Referring to the seventh figure at the same time, when the hinge structure of the present invention is used, the protrusion 28 on the cam 20 cooperates with the cover 204 of the mobile phone 200, and the rotation stop portion 12 on the main shaft 1 cooperates with the body 202 of the mobile phone 200, and the cover body When the 204 is fully closed, the top 126 of the finger 124 of the follower is located in and mates with the valley 242 of the cam 20, at which time the spring 60 has a certain pre-stress to keep the two in a stable state. 094117366 Form No. A0101 Page 8 of 22 1003263181-0 1352162 Correction page of July 19, 2001 [0022] When the cover 204 is opened, the cover 204 drives the cam 20 to rotate under the external force, and the spindle 10 The upper follower rotates relative to the cam 20, and the finger 124 slides along one of the inclined faces 246 of the cam surface 24. The cam 20 rotates on the main shaft 10 while moving linearly to push the first baffle 30 while driving the first baffle 30. Sliding relative to the second baffle 50 and compressing the spring 60, while the ball 40 rolls relative to the first baffle 30, since the first baffle 30 and the second baffle 50 are abutted by the balls 40, Because of the relative rotation, only rolling friction is generated. When the top 126 of the finger 124 of the follower slides on the cam surface 24 to the peak 244, the spring 60 is compressed to the shortest, and the accumulated elastic potential energy is the largest. In a steady state, the force is applied to the cover body so that the finger 124 of the follower portion passes over the peak 254, releasing the cover body, and the elastic force accumulated by the spring 60 causes the finger member 124 to rapidly slide along the other slope 246 of the cam 20, after which The cover 204 will be held under the action of the mobile phone body 202 A stable position, the positional relationship between two persons in a stable state again, when the lid is fully open. When the cover is closed, the stroke of the finger 122 is opposite to that when it is opened. [0023] The hinge structure follower of the present invention may not be disposed on the main shaft 10, that is, not formed integrally with the main shaft 10, but is a follower portion of the shaft hole and the cam surface or the finger. [0024] When the cam 20 and the spring 60 are not rotated relative to each other, and the main shaft 10 and the spring 60 are relatively rotated, the friction reducing body formed by the first baffle 30, the ball 40 and the second baffle 50 may be disposed on the spring 60 and Between the snap rings 70, the spring 6〇 and the snap ring 70 and the main shaft 10 will not be in direct contact, and the spring 60 and the snap ring 70 have only rolling friction due to the action of the friction reducing body. [0025] The friction reducing body may be replaced by other structures, and the balls 40 may be replaced by rollers. The spring 60 can be replaced by other elastic members such as sponge. In addition, the snap ring 70 can be 094117366 Form No. A0101 Page 9 / Total 22 pages 100326318 Bu 0 1352162 Correction replacement page on July 19, 100. The spring 60 is directly abutted against the flange portion 14 of the main shaft 10. The plurality of protrusions 28 of the cam 20 may be plural, and only a corresponding number of grooves are required to be fitted to the body, and the protrusions 28 may be replaced by the rotation preventing grooves. In summary, the present invention complies with the requirements of the invention patent 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 [0027] The first drawing is a perspective exploded view of one of the preferred embodiments of the hinge structure of the present invention; [0028] The second drawing is a three-dimensional decomposition of another direction of the preferred embodiment of the hinge structure of the present invention. The third drawing is an exploded perspective view of one of the friction reducing bodies of the preferred embodiment of the hinge structure of the present invention; [0030] The fourth drawing is another of the friction reducing body of the preferred embodiment of the hinge structure of the present invention. 3 is an assembled perspective view of a friction reducing body of a preferred embodiment of the hinge structure of the present invention; [0032] FIG. 6 is an assembled perspective view of a preferred embodiment of the hinge structure of the present invention; The seventh drawing is a perspective view of a portable electronic device using a preferred embodiment of the hinge structure of the present invention. [Description of main component symbols] 094117366 Form No. A0101 Page 10 of 22 1003263181-0 1352162 Correction replacement page of July 19, 100 [0034] Hinge structure: 100 [0035] Spindle: 10 ' [0036] :12 ' [0037] Flange portion: 14 [0038] Column portion: 122 [0039] Finger member: 124 φ [0040] Top: 126 [0041] Shaft portion: 16 [0042] Small shaft portion: 162 [ 0043] Cam: 20 [0044] Cam hole: 22 [0045] Cam surface: 24 • [0046] Valley: 242 [0047] Peak: 244 [0048] Bevel: 246 [0049] Flat end face: 26 [0050] Protrusion: 28 [0051] First baffle: 30 [0052] Bottom: 32 094117366 Form No. A0101 Page 11 / Total 22 1003263181-0 1352162 [0053] Bending: 34 [0054] Clamping protrusion: 342 [0055] Center hole: 36, 56 [0056] Second baffle: 50 [0057] Ball: 40 [0058] Bend: 54 [0059] Bottom: 52 [0060] Spring: 60 [0061] Ring hook :542 [0062] Mobile Phone: 200 [0063] Retaining Ring: 70 [0064] Cover: 204 [0065] Body: 202 094117366 Form No. A0101 Page 12 of 22 Page 100 July 19 Correction replacement sheet 1003263181-0