201019834 •九、發明說明： 【發明所屬之技術領域】 本發明涉及一種鉸鏈結構，尤其涉及一種適用於電子 裝置之鉸鏈結構。 【先前技術】 目前，市場上常見之電子設備，如筆記本電腦、個人 數位助理（Personal Digital Assistant，PDA)、手機、電子辭 典一般為折疊式，其包括本體及蓋體，本體及蓋體藉由鉸 ❹-鏈結構鉸接於一起，從而實現蓋體相對於本體打開或閉合。 - 一種鉸鏈結構，用以連接電子設備之本體及蓋體，其 包括一轉軸以及依次套設於轉軸上之一轉動支架、一固定 支架、一固定件、一轉動件、複數摩擦件及複數彈性件， 轉軸之端部與緊固件相螺合，轉動支架與蓋體固定連接， 固定支架與本體固定連接，固定件與轉動件之相接面上朝 外延伸有凸部，轉動定位件上開設有與該凸部相配合之凹 部，彈性件抵持於轉動件上，從而使得固定件與轉動件始 終緊密抵靠。固定件與轉動件之凸部與凹部相配合，可實 現蓋體相對於本體於特定之角度明顯定位。 然，上述鉸鏈結構中之固定件之凸起由於長時間與轉 動件之配合面摩擦而容易磨損，需要更換整個固定件，從 而造成該鉸鏈結構之維修成本較高。 【發明内容】 鑒於以上内容，有必要提供一種維修成本較低之鉸鏈 結構。 8 201019834 • 一種鉸鏈結構，其包括轉軸、轉動支架、固定支架、 固定件、定位塊、轉動件及緊固件，轉動支架與固定支架 可相對轉動且均套設於轉軸上，固定件與轉動件可相對轉 動且均套設於轉軸上，定位塊可拆卸地設於固定件及轉動 件中之一上，且固定件及轉動件中之另一上形成有與定位 塊相配合之定位凹槽。 上述鉸鏈結構之定位塊可從轉動件上拆卸下來，當定 位塊過於磨損時，可單獨更換定位塊，無需更換整個轉動 ®•件，從而降低鉸鏈結構之維修成本。 •【實施方式】 下面將結合附圖及具體實施方式對本發明之鉸鏈結構 作進一步之詳細說明。 請參閱圖1至圖3，本發明實施方式之鉸鏈結構100 包括轉軸11、固定支架12、摩擦件13、轉動支架14、限 位件15、定位件16、彈片17、墊片18及緊固件19。轉動 _支架12與固定支架14可相對轉動且均套設於轉軸11上。 摩擦件13包括二第一摩擦件131及二第二摩擦件133。二 第一摩擦件131可相對固定支架14轉動且套設於轉軸11 上。二第二摩擦件133與固定支架14固定連接且套設於轉 轴11上。限位件15可相對固定支架14轉動且套設於轉軸 11上。定位件16包括固定件161、二定位塊162及轉動件 163。固定件161與轉動件165可相互轉動且均套設於轉軸 11上。定位塊162可拆卸地固定於轉動件163上。彈性件 17及墊片18均套設於轉軸11上。緊固件19與轉軸11之 201019834 端部相螺合。 轉軸11包括橫截面為非圓形之基部111，基部111之 一端形成有螺紋部112，另一端形成有圓盤狀凸緣113。凸 緣113進一步向外延伸有一插接部114。 轉動支架12包括基板121、第一弧形定位片122及第 二弧形定位片123,第一弧形定位片122及第二弧形定位片 123分別從基板121之相對兩侧朝同一方向延伸。基板121 上開設有複數固定孔1211。第一弧形定位片122遠離基板 121之一端開設有與轉軸11之插接部114配合之非圓形之 配合孔1221。 第一摩擦片131中心開設有一圓形之通孔1311，其端 面上開設有複數油槽1312。 第二摩擦片133之中心開設有一圓形之通孔1331，邊 緣處垂直延伸有一定位片1332，第二摩擦片133之端面上 開設有複數油槽1333。 固定支架14包括固定板141及由固定板141之一侧垂 直延伸形成之支撐板142。固定板141上開設有複數固定孔 1411。支撐板142遠離固定板141之端部開設有一樞轉孔 1421，中部開設有一卡合孔1422。支撐板142遠離固定板 141之末端還開設有一凹口 1423。第二摩擦片133之定位 片1332用於插入凹口 1423中，從而使第二摩擦片133固 定連接至固定支架14上。 限位件15包括圓盤狀之本體151及與本體151相連之 第一限位部152。本體151之中心開設有一非圓形之穿孔 201019834 • 1511，本體151之端面上還開設有複數油槽1512。本實施 例中，第一限位部152為由本體151之側壁向外延伸形之 弧形凸起。 固定件161包括大致為圓盤狀之樞轉部1611及與樞轉 部1611相連之第二限位部1612。樞轉部1611包括配合面 16111、軸孔16112及形成於配合面16111上之二定位槽 16113，該二定位槽16113對稱設於軸孔16112兩側。本實 施例中，第二限位部1612為由枢轉部1611之一端向外延 ®‘伸形成之大致為三角形之凸塊，且凸塊之厚度要大於樞轉 •部1611之厚度。第二限位部1612上延伸有一凸柱16121。 請參閱圖4及圖5，定位塊162包括基體1621、定位 部1622及固定部1623,定位部1622從基體1621之一端朝 外延伸，固定部1623從基體1621之另一端朝外延伸。定 位部1622用於與固定件161之定位槽16113相配合。定位 部1622可根據設計需要設計成各種各樣之形狀。具體於本 •實施中，定位部1622之表面16221大體為梯形。 轉動件163大體為圓盤狀，其包括一配合面1631、一 貫穿孔1632及二固定孔1633。貫穿孔1632開設於轉動件 163之中部，二固定孔1633設於貫穿孔1632之週緣外部。 固定孔1633用於與定位塊162之固定部1623相配合，以 使定位塊162可拆卸地固定於轉動件163上。 彈性件17為中心開孔之碟形彈片，即其中心部分沿其 軸線方向朝一侧凸出，且其具有彈性。一對彈性件17背向 設置，即二彈性件17之凸出部分靠設於一起。 11 201019834 • 墊片18為中心開孔之圓形之片體。 緊固件19於本實施例中為與轉轴11之螺紋部112配 合之螺母。 請參閱圖1至圖6，裝配鉸鏈結構100時，首先，將二 定位塊162分別插入轉動件163之二固定孔1633中。接著， 將轉軸11具有螺紋部112之一端依次穿過二第一摩擦件 131、一第二摩擦件133、固定支架14上之樞轉孔1421、 另一第二摩擦片133、限位件15上之穿孔1511、固定件161 ® •之軸孔16112、轉動件163之貫穿孔1632、四彈性件17及 •墊片18後，與螺母19相螺合。接著，將轉軸11之插接部 114卡入轉動支架12之配合孔1221中。此時，轉動支架 12、限位件15、轉動件163及墊片18可隨轉軸11 一起轉 動，且限位件15與固定件161之樞轉部1612相貼合。接 下來，將固定件161上之凸柱16121卡入固定支架14上之 卡合孔1422中，並推動轉動件163，以使定位塊162上之 ❹定位部1622卡入固定件161之定位槽16113中。同時，將 二第二摩擦片133上之定位片1332分別插入固定支架14 之凹口 1423中。調節螺母19，以使彈性件17產生軸向之 彈力作用於轉動件163。 打開鉸鏈結構100時，推動轉動支架12之基板121沿 遠離固定支架14之方向旋轉，轉轴11將於轉動支架12之 帶動下旋轉，從而帶動轉軸11上之限位件15及轉動件163 旋轉，當限位件15上之第一限位部152與固定件161之第 二限位部1612相抵時，轉動支架12不可繼續轉動。此時， 12 201019834 •轉動支架12相對固定支架14處於最大打開角度。於此過 程中，可於任意位置停止對轉動支架12施力，從而使轉動 支架12停止於任意位置。關閉鉸鏈結構100時，推動轉動 支架12之基板121沿靠近固定支架14之方向旋轉，轉軸 11將於轉動支架12之帶動下旋轉，從而帶動轉軸11上之 限位件15及轉動件163旋轉，由於轉動件163受到彈性件 17之軸向彈力作用，所以可驅使定位塊162上之定位部 1622抵靠於固定件161之定位槽16113内，以使轉動支架 12相對固定支架14定位。 • 鉸鏈結構100應用於電子裝置時，其轉動支架12及固 定支架14分別與電子裝置之蓋體及本體相連即可，從而可 使電子裝置之蓋體可相對本體打開一定角度，亦可使電子 裝置之蓋體於閉合過程中與本體自動鎖緊。 鉸鏈結構，100之定位塊162可從轉動件163上拆卸下 來，當定位塊162過於磨損時，可單獨更換定位塊162，無 0需更換整個轉動件163,從而降低鉸鏈結構100之維修成 本。另，定位塊162之定位部1622可根據設計需要設計成 各種各樣之形狀，以達到不同之鎖定效果。例如，改變定 位部1622之高度可調整彈性件17之彈性力之變化量，改 變其表面16221之頂點相對於定位部1622之底部之傾斜度 可調整鎖定速度，改變其表面16221之形狀可調整鎖定時 之手感。另，定位部1622之表面16221之形狀可調整定位 部1622與固定件161之配合面16111之間接觸面積，從而 調整定位部1622與固定件161之間之摩擦力大小。具體於 13 201019834 •本實施中，定位部1622之表面16221大體為梯形，使得鉸 鏈鎖定速度較快。 可以理解，定位塊162不限於固定於轉動件163上， 亦可固定於固定件161上，此時，轉動件163設有與定位 塊162之定位部1622相配合之定位槽。而且，定位塊162 之個數不限於兩個，亦可為一個、三個或三個以上，從而 增加轉動支架12於轉動過程中之定位位置。 可以理解，彈性件17不限於碟形彈片，亦可為波形彈 ®•片、弓形彈片及彈簧。 • 請參閱圖7,本發明實施方式二之定位塊262與實施方 式一之定位塊162相似，其不同之處在於：定位塊262之 定位部2622之表面26221為拋物線形，使得鉸鏈結構之鎖 定速度較慢且手感平順。 請參閱圖8,本發明實施方式三之定位塊362與實施方 式一之定位塊162相似，其不同之處在於：定位塊362之 _定位部3622之表面36221為倒V字形，使得鉸鏈結構之鎖 定速度較慢。 請參閱圖9,本發明實施方式三之定位塊462與實施方 式一之定位塊162相似，其不同之處在於：定位塊462之 定位部4622之表面46221為波浪形，使得鉸鏈結構之鎖定 速度較快且手感平順。另，定位部4622之表面46221具有 二最高頂點，定位塊462於鉸鏈結構進入自鎖狀態時，使 得定位塊462與固定件161之間摩擦力瞬間突變。 綜上所述，本發明確已符合發明專利之要件，遂依法 14 201019834 j出專#彳申μ。惟’以上所述者僅為本發明之較佳實施方 ^自不能以此限制本案之申請專利範圍。舉凡熟悉本案 技藝之人士援依本發明之精神所作之等效修飾或變化，皆 應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1係本發明實施方式之鉸鏈結構之立體圖。 圖2係圖1之鉸鏈結構於相反方向上之立體分解圖。 ❹ 圖3係圖1之鉸鏈結構另一視角之立體分解圖。 圖4係圖i之鉸鏈結構之定位塊之立體圖。 圖5係沿圖4中V-V線之剖視圖。 圖6係圖1所示之鉸鏈結構之轉動支架相對固定支架 轉過一定角度後之立體圖。 圖7係本發明實施方式二之定位塊之剖視圖。 圖8係本發明實施方式三之定位塊之刮視圖。 圖9係本發明實施方式四之定位塊之剖視圖。 ❹【主要元件符號說明】 鉸鰱結構 轉輛 100 柩轉孔 1421 11 卡合孔 1422 基部 111 凹口 1423 螺紋部 112 限位件 15 凸緣 113 本體 151 插接部 114 穿孔 1511 轉動支架 12 第一限位 152 部 15 201019834 * 基板 固定孔 第一弧形定 位片 配合孔 第二弧形定 ®'位片 * 摩擦件 第一摩擦件 通孔 油槽 〇 第二摩擦片 定位片 固定支架 固定板 支撐板 121 定位件 16 1211、1411、 固定件 161 1633 122 樞轉部 1611 1221 第二限位 1612 部 123 定位塊 162 、262、 362、 462 13 基體 1621 131 定位部 1622 、2622 、 3622 、4622 1311 、 1331 固定部 1623 1312、1333、 轉動件 163 ' 165 1512 133 配合面 1631 1332 貫穿孔 1632 14 彈性件 17 141 墊片 18 142 螺母 19 16201019834 • Ninth, invention: [Technical Field] The present invention relates to a hinge structure, and more particularly to a hinge structure suitable for an electronic device. [Prior Art] At present, electronic devices commonly used in the market, such as notebook computers, personal digital assistants (PDAs), mobile phones, and electronic dictionaries are generally folded, including a body and a cover body, and the body and the cover body are The hinge-chain structures are hinged together to effect opening or closing of the cover relative to the body. - a hinge structure for connecting the body and the cover of the electronic device, comprising a rotating shaft and a rotating bracket sequentially arranged on the rotating shaft, a fixing bracket, a fixing member, a rotating member, a plurality of friction members and a plurality of elastic members The end portion of the rotating shaft is screwed with the fastener, the rotating bracket is fixedly connected with the cover body, the fixing bracket is fixedly connected with the body, and the convex portion is extended outward on the connecting surface of the fixing member and the rotating member, and the rotating positioning member is opened There is a recess corresponding to the convex portion, and the elastic member abuts against the rotating member, so that the fixing member and the rotating member are always closely abutted. The fixing member and the convex portion of the rotating member cooperate with the concave portion to realize the obvious positioning of the cover body at a specific angle with respect to the body. However, the protrusion of the fixing member in the above hinge structure is easily worn due to friction with the mating surface of the rotating member for a long time, and the entire fixing member needs to be replaced, thereby causing high maintenance cost of the hinge structure. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a hinge structure with a low maintenance cost. 8 201019834 • A hinge structure comprising a rotating shaft, a rotating bracket, a fixing bracket, a fixing member, a positioning block, a rotating member and a fastener, wherein the rotating bracket and the fixing bracket are relatively rotatable and are sleeved on the rotating shaft, the fixing member and the rotating member The locating block is detachably disposed on one of the fixing member and the rotating member, and the other of the fixing member and the rotating member is formed with a positioning groove matched with the positioning block. . The positioning block of the hinge structure can be detached from the rotating member. When the positioning block is too worn, the positioning block can be replaced separately, and the entire rotating member is not required to be replaced, thereby reducing the maintenance cost of the hinge structure. [Embodiment] The hinge structure of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Referring to FIG. 1 to FIG. 3 , the hinge structure 100 of the embodiment of the present invention includes a rotating shaft 11 , a fixing bracket 12 , a friction member 13 , a rotating bracket 14 , a limiting member 15 , a positioning member 16 , a spring piece 17 , a gasket 18 , and a fastener . 19. The rotating bracket 12 and the fixed bracket 14 are relatively rotatable and are sleeved on the rotating shaft 11. The friction member 13 includes two first friction members 131 and two second friction members 133. The first friction member 131 is rotatable relative to the fixed bracket 14 and sleeved on the rotating shaft 11 . The second friction member 133 is fixedly coupled to the fixing bracket 14 and sleeved on the rotating shaft 11. The limiting member 15 is rotatable relative to the fixing bracket 14 and sleeved on the rotating shaft 11. The positioning member 16 includes a fixing member 161, two positioning blocks 162, and a rotating member 163. The fixing member 161 and the rotating member 165 are rotatable relative to each other and are sleeved on the rotating shaft 11. The positioning block 162 is detachably fixed to the rotating member 163. The elastic member 17 and the spacer 18 are sleeved on the rotating shaft 11. The fastener 19 is screwed to the end of the 201019834 shaft 11 of the shaft 11. The rotary shaft 11 includes a base portion 111 having a non-circular cross section, one end of the base portion 111 is formed with a threaded portion 112, and the other end is formed with a disc-shaped flange 113. The flange 113 further extends outwardly with a plug portion 114. The rotating bracket 12 includes a base plate 121, a first curved positioning piece 122 and a second curved positioning piece 123. The first curved positioning piece 122 and the second curved positioning piece 123 extend from the opposite sides of the substrate 121 in the same direction, respectively. . A plurality of fixing holes 1211 are formed in the substrate 121. The first curved positioning piece 122 is spaced apart from one end of the substrate 121 and has a non-circular fitting hole 1221 that cooperates with the insertion portion 114 of the rotating shaft 11. A circular through hole 1311 is defined in the center of the first friction plate 131, and a plurality of oil grooves 1312 are formed on the end surface thereof. A circular through hole 1331 is defined in the center of the second friction plate 133, and a positioning piece 1332 is vertically extended at the edge, and a plurality of oil grooves 1333 are formed on the end surface of the second friction piece 133. The fixing bracket 14 includes a fixing plate 141 and a supporting plate 142 which is formed to extend vertically from one side of the fixing plate 141. A plurality of fixing holes 1411 are formed in the fixing plate 141. A pivot hole 1421 is defined in an end portion of the support plate 142 away from the fixing plate 141, and an engaging hole 1422 is defined in the middle portion. A notch 1423 is defined in the end of the support plate 142 away from the fixed plate 141. The positioning piece 1332 of the second friction plate 133 is for insertion into the recess 1423 so that the second friction piece 133 is fixedly coupled to the fixing bracket 14. The limiting member 15 includes a disk-shaped body 151 and a first limiting portion 152 connected to the body 151. A non-circular perforation is formed in the center of the body 151. 201019834 • 1511, a plurality of oil grooves 1512 are further formed on the end surface of the body 151. In this embodiment, the first limiting portion 152 is an arc-shaped protrusion extending outward from the side wall of the body 151. The fixing member 161 includes a substantially disk-shaped pivoting portion 1611 and a second limiting portion 1612 connected to the pivoting portion 1611. The pivoting portion 1611 includes a mating surface 16111, a shaft hole 16112, and two positioning grooves 16113 formed on the mating surface 16111. The two positioning slots 16113 are symmetrically disposed on both sides of the shaft hole 16112. In this embodiment, the second limiting portion 1612 is a substantially triangular shaped bump formed by one end of the pivoting portion 1611, and the thickness of the protruding portion is greater than the thickness of the pivoting portion 1611. A protrusion 16121 extends from the second limiting portion 1612. Referring to FIGS. 4 and 5, the positioning block 162 includes a base 1621, a positioning portion 1622, and a fixing portion 1623. The positioning portion 1622 extends outward from one end of the base 1621, and the fixing portion 1623 extends outward from the other end of the base 1621. The positioning portion 1622 is for engaging with the positioning groove 16113 of the fixing member 161. The positioning portion 1622 can be designed in a variety of shapes depending on design requirements. Specifically, in the present embodiment, the surface 16221 of the positioning portion 1622 is substantially trapezoidal. The rotating member 163 is substantially disk-shaped and includes a mating surface 1631, a through hole 1632 and two fixing holes 1633. The through hole 1632 is defined in the middle of the rotating member 163, and the two fixing holes 1633 are disposed outside the periphery of the through hole 1632. The fixing hole 1633 is for engaging with the fixing portion 1623 of the positioning block 162 to detachably fix the positioning block 162 to the rotating member 163. The elastic member 17 is a disc-shaped elastic piece having a central opening, that is, a central portion thereof protrudes toward one side in the axial direction thereof, and has elasticity. A pair of elastic members 17 are disposed facing away, that is, the projecting portions of the two elastic members 17 are disposed together. 11 201019834 • The spacer 18 is a circular piece with a central opening. The fastener 19 is a nut that cooperates with the threaded portion 112 of the shaft 11 in this embodiment. Referring to FIGS. 1 through 6, when the hinge structure 100 is assembled, first, the two positioning blocks 162 are respectively inserted into the two fixing holes 1633 of the rotating member 163. Then, one end of the rotating shaft 11 having the threaded portion 112 is sequentially passed through the two first friction members 131, a second friction member 133, the pivot hole 1421 on the fixing bracket 14, the other second friction plate 133, and the limiting member 15 The upper through hole 1511, the fixing member 161 ® • the shaft hole 16112 , the through hole 1632 of the rotating member 163 , the four elastic members 17 and the spacer 18 are screwed together with the nut 19 . Next, the insertion portion 114 of the rotating shaft 11 is engaged in the fitting hole 1221 of the rotating bracket 12. At this time, the rotating bracket 12, the limiting member 15, the rotating member 163 and the spacer 18 can be rotated together with the rotating shaft 11, and the limiting member 15 is engaged with the pivoting portion 1612 of the fixing member 161. Next, the protrusion 16121 on the fixing member 161 is inserted into the engaging hole 1422 of the fixing bracket 14, and the rotating member 163 is pushed to engage the positioning portion 1622 of the positioning block 162 into the positioning groove of the fixing member 161. 16113. At the same time, the positioning pieces 1332 on the second second friction plates 133 are respectively inserted into the notches 1423 of the fixing bracket 14. The nut 19 is adjusted so that the elastic member 17 generates an axial elastic force acting on the rotating member 163. When the hinge structure 100 is opened, the substrate 121 of the rotating bracket 12 is rotated in a direction away from the fixing bracket 14, and the rotating shaft 11 is rotated by the rotating bracket 12, thereby rotating the limiting member 15 and the rotating member 163 on the rotating shaft 11. When the first limiting portion 152 of the limiting member 15 abuts against the second limiting portion 1612 of the fixing member 161, the rotating bracket 12 cannot continue to rotate. At this time, 12 201019834 • The rotating bracket 12 is at the maximum opening angle with respect to the fixed bracket 14. In this process, the rotation of the rotating bracket 12 can be stopped at any position, so that the rotating bracket 12 is stopped at an arbitrary position. When the hinge structure 100 is closed, the substrate 121 of the rotating bracket 12 is rotated in the direction of the fixing bracket 14 , and the rotating shaft 11 is rotated by the rotating bracket 12 to rotate the limiting member 15 and the rotating member 163 on the rotating shaft 11 . Since the rotating member 163 is subjected to the axial elastic force of the elastic member 17, the positioning portion 1622 on the positioning block 162 can be driven into the positioning groove 16113 of the fixing member 161 to position the rotating bracket 12 relative to the fixing bracket 14. When the hinge structure 100 is applied to an electronic device, the rotating bracket 12 and the fixing bracket 14 are respectively connected to the cover body and the body of the electronic device, so that the cover of the electronic device can be opened at a certain angle with respect to the body, and the electronic device can also be used. The cover of the device is automatically locked with the body during the closing process. The hinge structure 100 can be detached from the rotating member 163. When the positioning block 162 is too worn, the positioning block 162 can be replaced separately, and the entire rotating member 163 needs to be replaced, thereby reducing the maintenance cost of the hinge structure 100. In addition, the positioning portion 1622 of the positioning block 162 can be designed in various shapes according to design requirements to achieve different locking effects. For example, changing the height of the positioning portion 1622 can adjust the amount of change in the elastic force of the elastic member 17, and changing the inclination of the apex of the surface 16221 with respect to the bottom of the positioning portion 1622 can adjust the locking speed, and change the shape of the surface 16221 to adjust the locking. The feeling of time. In addition, the shape of the surface 16221 of the positioning portion 1622 can adjust the contact area between the positioning portion 1622 and the mating surface 16111 of the fixing member 161, thereby adjusting the frictional force between the positioning portion 1622 and the fixing member 161. Specifically in 13 201019834 • In this embodiment, the surface 16221 of the positioning portion 1622 is generally trapezoidal, so that the hinge locking speed is faster. It can be understood that the positioning block 162 is not limited to being fixed to the rotating member 163, and may be fixed to the fixing member 161. At this time, the rotating member 163 is provided with a positioning groove that cooperates with the positioning portion 1622 of the positioning block 162. Moreover, the number of the positioning blocks 162 is not limited to two, and may be one, three or more, thereby increasing the positioning position of the rotating bracket 12 during the rotation. It can be understood that the elastic member 17 is not limited to the disc-shaped elastic piece, and can also be a wave elastic piece, a bow piece, and a spring. Referring to FIG. 7, the positioning block 262 of the second embodiment of the present invention is similar to the positioning block 162 of the first embodiment, except that the surface 26221 of the positioning portion 2622 of the positioning block 262 is parabolic, so that the hinge structure is locked. Slower and smoother. Referring to FIG. 8 , the positioning block 362 of the third embodiment of the present invention is similar to the positioning block 162 of the first embodiment, and the difference is that the surface 36221 of the positioning portion 3622 of the positioning block 362 has an inverted V shape, so that the hinge structure is The locking speed is slower. Referring to FIG. 9, the positioning block 462 of the third embodiment of the present invention is similar to the positioning block 162 of the first embodiment, except that the surface 46221 of the positioning portion 4622 of the positioning block 462 is wavy, so that the locking speed of the hinge structure is achieved. Faster and smoother. In addition, the surface 46221 of the positioning portion 4622 has two highest vertices, and when the hinge structure enters the self-locking state, the frictional force between the positioning block 462 and the fixing member 161 is abruptly changed. In summary, the present invention has indeed met the requirements of the invention patent, 遂 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 However, the above description is only the preferred embodiment of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the present invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a hinge structure according to an embodiment of the present invention. Figure 2 is an exploded perspective view of the hinge structure of Figure 1 in the opposite direction. ❹ Figure 3 is an exploded perspective view of another perspective of the hinge structure of Figure 1. Figure 4 is a perspective view of the positioning block of the hinge structure of Figure i. Figure 5 is a cross-sectional view taken along line V-V of Figure 4. Fig. 6 is a perspective view showing the hinge bracket of the hinge structure shown in Fig. 1 rotated relative to the fixed bracket by a certain angle. Figure 7 is a cross-sectional view showing a positioning block according to a second embodiment of the present invention. Figure 8 is a plan view of a positioning block according to a third embodiment of the present invention. Figure 9 is a cross-sectional view showing a positioning block according to a fourth embodiment of the present invention. ❹【Main component symbol description】 Hinge structure transfer unit 100 柩 turn hole 1421 11 Engagement hole 1422 Base part 111 Notch 1423 Threaded part 112 Limiting piece 15 Flange 113 Main body 151 Inserting part 114 Perforation 1511 Rotating bracket 12 First Limit 152 Part 15 201019834 * Substrate fixing hole First curved positioning piece Fitted hole Second curved fixed ®' position piece * Friction part First friction part Through hole oil groove 〇 Second friction piece Positioning piece Fixing bracket Fixed plate Support plate 121 Locating member 16 1211, 1411, fixing member 161 1633 122 pivoting portion 1611 1221 second limiting position 1612 portion 123 positioning block 162, 262, 362, 462 13 base body 1621 131 positioning portion 1622, 2622, 3622, 4622 1311, 1331 Fixing portion 1623 1312, 1333, rotating member 163 ' 165 1512 133 mating surface 1631 1332 through hole 1632 14 elastic member 17 141 spacer 18 142 nut 19 16