1351911 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，尤其涉及一種具有磁性之 . 鉸鏈結構。 【先前技術】 目如，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)、行動電話、電 子辭典一般為折疊式，其包括本體及蓋體，本體及蓋體藉 _由鉸鏈結構鉸接於一起，從而實現蓋體相對於本體打開或 閉合。 種磁性鉸鏈結構，定位於第一穩定狀態或第二穩定 狀態，其包括外套、轉轴、固定磁性元件及可動磁性元件， 外套具有一空腔，轉軸設置於空腔内，固定磁性元件固定 於外套之空腔内，可動磁性元件設置於空腔内並與空腔套 接，以使可動磁性元件繞轉軸轉動，可動磁性元件與固定 籲磁性元件成對配置且可動磁性元件與固定磁性元件係以同 極性相面對。磁性鉸鏈結構定位於第一穩定狀態時，可動 磁性元件位於固定磁性元件之一侧，磁性鉸鏈結構定位於 第一穩定狀態時，可動磁性元件位於固定磁性元件之另一 側。可動磁性元件與固定磁性元件之間產生排斥磁力，從 而提供旋轉回復力，使磁性鉸鏈結構具有自鎖功能。 然，筆記本電腦、掌上遊戲機等電子裝置中，顯示幕 一般設於蓋體中，使用者經常需要根據視角之不同而調整 蓋體與本體之相對位置，並希望該二部件能於任意相對位 5 1351911 .留以便於任意位置對其進行操作而不晃動。上述磁 ··*鉸鏈結構中自鎖於第—敎狀態及第二狀狀態於其 •.他位置不能穩定停留’難以實現自由定位。 【發明内容】 馨於以上内玄，古v a上日 有必要提供一種同時具有自鎖功能及 自由定位功能之磁性鉸鏈結構。 種磁性叙鏈結構，其包括轉動支架固定支架、第 -磁性元件、第二磁性元件、轉軸及緊固件，轉動^架與 固定支架可相對轉動、且均套設於轉轴上，第一磁性元件 口疋於轉動支架上，第二磁性元件固定於固定支架上，第 一磁性70件與第一磁性元件以異極端相對之方式設置，且 第一磁性70件與第一磁性元件之間之距離隨轉動支架轉動 而變化。 上述磁性鉸鏈結構藉由第一磁性元件與第二磁性元件 以異極端相對之方式設置而產生吸引磁力，吸引磁力因第 _ 一磁性兀件與第二磁性元件之間之距離之變化而變化，轉 軸之軸向產生之磁力矩隨著吸引磁力而變化。 固定支架因擠壓而產生摩擦力，摩擦力於轉轴之轴向產^ 摩擦力矩。當磁力矩小於或等於摩擦力矩時，磁性鉸鏈結 構處於自由定位狀態；當磁力矩大於摩擦力矩時，磁性鉸 鏈結構處於自鎖狀態。因此，上述磁性鉸鏈結構同時具有 自鎖功能及自由定位功能。 【實施方式】 下面將結合附圖及具體實施方式對本發明之磁性鉸鏈 丄351911 .结構作進一步之詳細說明。 叫參閱圖1及圖2,本發明實施方式一之磁性鉸鏈結構 .100匕括轉軸^、一第一磁性元件12、一轉動支架 .二摩擦片14、一固定支架15、二彈性件16、一第二磁性元 牛 塾片18及一緊固件19。第一磁性元件12固定於 轉動支架13上’第二磁性元件17固定於固定支架15上。 轉動支架13、摩擦件14、彈性件16及墊片18均套設於轉 軸11上。固疋支架15固定套設於轉轴11上，轉動支架13、 摩擦件14及彈性件16可相對於固定支架15轉動。摩擦件 H s又置於轉動支架13與固定支架15之 固件而設置，緊固件19設於轉轴μ端部。 立轉軸11包括圓形截面之軸部112、非圓形截面之限位 Ρ 114及圓盤狀之抵擋部。限位部從軸部112之一 端朝外延伸，抵擋部116從軸部112之另一端朝外延伸。 限位。卩114遠離軸部112之端部設有螺紋1142。抵擋部 _之直徑最大，以防止轉動支架13從轉軸^上脫落。 第一磁性元件12包括一圓柱形基部122及從基部122 一端朝外延伸之圓柱形第一固定部124，第一固定部124 之直徑小於基部122之直徑◎第一固定部124遠離基部122 之端部之極性為S極。第一磁性元件12可為永久磁鐵、電 礤鐵等有磁性之元件。具體於本實施例中，第一磁性元件 12為永久磁鐵。 轉動支架13包括一固定部132及自固定部132垂直延 伸出之一連接部134。固定部132上開設有複數裝配孔 7 1351911 .1322，藉由裝配孔1322將固定支架13安裝至電子裝置之 ‘蓋體上。連接部134大致呈板狀，其上開設有樞接孔1342 •.及第一固定孔卫344。柩接孔1342為圓形孔，以供轉軸u 穿設。第一固定孔1344與第一磁性元件12之第一固定部 124過盈配合，以使第一磁性元件12固定於轉動支架 上，且該第一磁性元件12之軸線偏離轉動支架13之樞接 孔13 42之轴線。 摩擦片14為圓形之片體，其上開設有一圓形通孔142 •及位於通孔W週圍之複數油孔⑷。摩擦件14藉由通孔 142套設於轉軸η上。 固疋支架15包括一固定部152及自固定部152垂直延 伸之連接部154。固定部152設有複數裝配孔1522，藉由 裝配孔1522將固定支架15安裝至電子裝置之本體上。連 接部154大致呈板狀，其上開設有穿孔1542及第二固定孔 1544。穿孔1542為非圓形，例如，其可為三角形、方形、 φ橢圓形、多邊形等形狀。 彈性件16為中心開孔之碟形彈片，即其中心部分沿其 軸線方向朝-㈣出，且其具有彈性。—對彈性件16背^ 設置，即二彈性件16之凸出部分靠設於一起。 第二磁性元件17包括一圓柱形基部Μ及從基部⑺ 端朝外延伸之圓柱形第m卩174n定部⑺ 之直徑小於基部172之直徑。第二固定部174遠離基部i72 之端部之極性為N極。第二磁性元件17之第二固定部174 用於插入固定支架15之第二以孔測内，且該第二磁 8 1351911 .性兀件17之軸線偏離固定支架15之穿孔1542之軸線。組 ·.裴後，第二固定部174之端部與第一磁性元件12之第一固 .义。卩124之端部直接相對，故第二固定部174端部之極性 與第一固定部124端部之極性相反。當然，第二固定部174 端部之極性與第一固定部124端部之S、N極之方向可改 變，僅需其相對之端部之極性相反即可。第二磁性元件17 可為永久磁鐵、電磁鐵等有磁性之元件。具體於本實施例 中’第二磁性元件17為永久磁鐵。 墊片18為中心開孔之圓形片體。 緊固件19為一防鬆螺母，其大體為六棱柱形，其中心 開設有螺孔192，轉軸11限位部114之螺紋1142與緊固.件 19之螺孔192配合而將緊固件19可拆卸固定至轉軸u上， 從而防止墊片18從轉軸n上脫落。緊固件19包括一防鬆 部194’其用於增大緊固件19與墊片以之間之摩擦力以 防止緊固件19與轉轴n⑮合後由於受到抵壓而發生鬆 動。本實施例中，防鬆部194為複數設於緊固件19端面之 凸起。 吻參閱圖1及圖2,裝配磁性鉸鏈結構1〇〇時，首先， 將第一磁性元件12之第一固定部124插入轉動支架13之 第一固定孔1344中，將第二磁性元件17之第二固定部174 插入固疋支架15之第二固定孔1544中，使第一磁性元件 12及第二磁性元件17分別固定於轉動支架13及固定支架 15上。接著，依次將轉動支架13、二摩擦件14、固定支架 15、二彈性件16、墊片18套設於轉軸11上。最後，將緊 9 1351911 從而將緊固件19固 固件19旋至轉軸U之螺紋1142上 定於轉軸11上。 策^閱圖1至圖3’初始狀態時’第一磁性元件12之 H疋部m與第二磁性元件17之第二固定部m吸 1使第—磁性元件12與第二磁性元件位於同-軸 於絲此時，磁性錢鏈結構綱處於鎖定狀態。朝一方向 二私動支架13時’第—磁性元件12隨著轉動支架13 一 起轉動:第-磁性元件12逐漸與第二磁性元件17分離， P第磁度7G件12與第二磁性元件17之轴線逐漸偏離。 於此過程中，當轉動支架13轉動到—特定位置時，二摩擦 件14、轉動支架13及固定支架15之間之摩擦力於轉轴u 之軸向產生之摩擦力矩，等於第—磁性元件13與第二磁性 兀件17之間之吸引磁力於轉軸u之軸向產生之磁力矩。 當轉動支架13轉過此特定位置而達到摩擦力矩大於磁力矩 時，轉動支架：13相對於固定支架15可任意停留，此時鉸 鏈結構100處於自由定位之狀態。朝相反方向旋轉轉動支 架13時，第一磁性元件逐漸靠近第二磁性元件17。於 此過程中，當轉動支架13未轉過前述特定位置時，磁性鉸 鏈結構100處於自由定位之狀態；當轉動支架13轉過前述 特定位置時，第一磁性元件13與第二磁性元件17之間之 吸引磁力於轉轴11之軸向產生之磁力矩，大於二摩擦件 14、轉動支架13及固定支架15之間之摩擦力於轉軸1;1之 軸向產生之摩擦力矩，使得轉動支架13於磁力矩之作用下 自動回復到初始鎖定位置。 1351911 • 上述磁性鉸鏈結構100中，第一磁性元件12與第二磁 、性π件17之間之吸引磁力於轉軸n之軸向產生之磁力矩 .隨著二者之間之距離之變化而變化。轉動支架13與固定支 架15因擠壓而產生摩擦力，摩擦力於轉軸n之軸向產生 摩擦力矩。當磁力矩小於或等於摩擦力矩時，磁性鉸鏈結 構100處於自由定位狀態；當磁力矩大於摩擦力矩時，磁 性鉸鏈結構100處於自鎖狀態。另，當磁性鉸鏈結構1〇〇 應用於液晶顯示器或筆記本電腦等電子裝置時，還應當考 慮顯不幕之重力矩。當磁力矩小於或等於摩擦力矩與顯示 幕之重力矩之合力矩時，磁性鉸鏈結構1〇〇處於自由定位 狀態；當磁力矩大於摩擦力矩與顯示幕之重力矩之合力矩 時，磁性鉸鏈結構1〇〇處於自鎖狀態。因此，上述磁性鉸 鏈結構100同時具有自鎖功能及自由定位功能。 請參閱圖4 ’本發明實施方式二之磁性鉸鏈結構2〇〇 與實施方式一之磕性鉸鏈結構100相似，其包括轉軸21、 _第一磁性元件22、轉動支架23、摩擦件24、固定支架25、 彈性件26、第二磁性元件27、墊片28及一緊固件29。第 一磁性元件22固定於轉動支架23上，第二磁性元件27固 定於固定支架25上。轉動支架23、摩擦件24、固定支架 25、彈性件26及墊片28均套設於轉轴21上。其不同之處 在於：磁性鉸鏈結構200包括二第一磁性元件22，二第一 磁性元件22相對於轉動支架23之樞接孔2342對稱固定於 轉動支架23上’二第一磁性元件22與一第二磁性元件27 之間之磁力所產生之磁力力矩，使磁性鉸鏈結構2〇〇具有 11 1351911 .二自動鎖定位置。 可以理解’第—磁性元件12、22與第二磁性元件17、 • 27不限於直接㈣，亦可間接㈣，例如，第一磁性元件 12、22與第二磁性元件17、27被二摩擦件14 24所遮撐， 僅而第磁性元件12、22及第二磁性元件17、27之磁場 月匕夠穿透丁摩擦件14、24即可。 可以理解’第—磁性元件12、22之數目不限於一個或 一個亦可為二個及二個以上，僅需第一磁性元件、22 與第二磁性元件17、27以異極端相對之方式設置即可。並 且，第磁性元件12、22及第二磁性元件17、27不限於 利用過盈配合之方式將其固定於轉動支架13、23及固定支 架15、25中，亦可採用其他之固定方式，例如，可於第一 磁性兀件12、22及第二磁性元件17、27之一端設有螺紋， 於轉動支架13、23及固定支架15、25上分別開設有與螺 紋相螺合之螺孔。 可以理解，彈性件16、26不限於碟形彈片，亦可為波 形彈片、弓形彈片及彈簧。 综上所述，本發明確已符合發明專利之要件，遂依法 提出專利申請。惟，以上所述者僅為本發明之較佳實施方 式’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係本發明實施方式一之磁性鉸鏈結構之立體分解 12 1351911 圖2係圖1之磁性鉸鏈結構之組裝圖。 圖3係圖1之磁性鉸鏈結構旋轉時之狀態圖。 圖4係本發明實施方式二之磁性鉸鏈結構之立體分解1351911 IX. Description of the invention: . [Technical field to which the invention pertains] The present invention relates to a hinge structure, and more particularly to a hinge structure having magnetic properties. [Prior Art] For example, 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, a body and a cover body. The hinges are hinged together by a hinge structure to open or close the cover relative to the body. The magnetic hinge structure is positioned in a first stable state or a second stable state, and includes a jacket, a rotating shaft, a fixed magnetic component and a movable magnetic component, the outer casing has a cavity, the rotating shaft is disposed in the cavity, and the fixed magnetic component is fixed to the outer casing In the cavity, the movable magnetic component is disposed in the cavity and is sleeved with the cavity to rotate the movable magnetic component about the rotating shaft, the movable magnetic component is disposed in pair with the fixed magnetic component, and the movable magnetic component and the fixed magnetic component are Faced with the same polarity. When the magnetic hinge structure is positioned in the first stable state, the movable magnetic element is located on one side of the fixed magnetic element, and when the magnetic hinge structure is positioned in the first stable state, the movable magnetic element is located on the other side of the fixed magnetic element. A repulsive magnetic force is generated between the movable magnetic element and the fixed magnetic element to provide a rotational restoring force, and the magnetic hinge structure has a self-locking function. However, in electronic devices such as notebook computers and handheld game consoles, the display screen is generally disposed in the cover body, and the user often needs to adjust the relative position of the cover body and the body according to the difference in viewing angle, and it is desirable that the two components can be in any relative position. 5 1351911 . Leave it to operate at any position without shaking. In the above magnetic *·* hinge structure, the self-locking state and the second state are self-locking, and the position thereof cannot be stably stopped. [Summary of the Invention] Xin is above the inner Xuan, ancient v a last day It is necessary to provide a magnetic hinge structure with both self-locking function and free positioning function. The magnetic chain-removing structure comprises a rotating bracket fixing bracket, a first magnetic element, a second magnetic element, a rotating shaft and a fastener, wherein the rotating frame and the fixing bracket are relatively rotatable and are sleeved on the rotating shaft, the first magnetic The component is mounted on the rotating bracket, and the second magnetic component is fixed on the fixing bracket. The first magnetic component 70 is disposed opposite to the first magnetic component, and the first magnetic component 70 is disposed between the first magnetic component and the first magnetic component. The distance changes as the rotating bracket rotates. The magnetic hinge structure generates an attracting magnetic force by the first magnetic element and the second magnetic element being disposed opposite to each other in an opposite manner, and the attracting magnetic force changes due to a change in the distance between the first magnetic element and the second magnetic element. The magnetic moment generated in the axial direction of the rotating shaft changes with the attraction magnetic force. The fixing bracket generates friction due to the pressing, and the friction force generates frictional torque in the axial direction of the rotating shaft. When the magnetic moment is less than or equal to the friction torque, the magnetic hinge structure is in a freely positioned state; when the magnetic moment is greater than the friction torque, the magnetic hinge structure is in a self-locking state. Therefore, the above magnetic hinge structure has both a self-locking function and a free positioning function. [Embodiment] The structure of the magnetic hinge 丄351911 of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Referring to FIG. 1 and FIG. 2, the magnetic hinge structure of the first embodiment of the present invention includes a rotating shaft, a first magnetic element 12, a rotating bracket, two friction plates 14, a fixing bracket 15, and two elastic members. A second magnetic element burdock 18 and a fastener 19. The first magnetic member 12 is fixed to the rotating bracket 13. The second magnetic member 17 is fixed to the fixed bracket 15. The rotating bracket 13, the friction member 14, the elastic member 16, and the spacer 18 are all sleeved on the rotating shaft 11. The fixing bracket 15 is fixedly sleeved on the rotating shaft 11, and the rotating bracket 13, the friction member 14 and the elastic member 16 are rotatable relative to the fixing bracket 15. The friction member H s is again placed on the firmware of the rotating bracket 13 and the fixing bracket 15, and the fastener 19 is provided at the end of the rotating shaft μ. The vertical shaft 11 includes a shaft portion 112 having a circular cross section, a limit Ρ 114 of a non-circular cross section, and a disk-shaped resisting portion. The stopper extends outward from one end of the shaft portion 112, and the abutting portion 116 extends outward from the other end of the shaft portion 112. Limit. The end of the crucible 114 away from the shaft portion 112 is provided with a thread 1142. The diameter of the resisting portion _ is the largest to prevent the rotating bracket 13 from coming off the rotating shaft. The first magnetic component 12 includes a cylindrical base portion 122 and a cylindrical first fixing portion 124 extending outwardly from an end of the base portion 122. The diameter of the first fixing portion 124 is smaller than the diameter of the base portion 122. The first fixing portion 124 is away from the base portion 122. The polarity of the end is S pole. The first magnetic element 12 may be a magnetic element such as a permanent magnet or an electric iron. Specifically in the present embodiment, the first magnetic element 12 is a permanent magnet. The rotating bracket 13 includes a fixing portion 132 and a connecting portion 134 extending perpendicularly from the fixing portion 132. The fixing portion 132 is provided with a plurality of mounting holes 7 1351911 . 1322, and the fixing bracket 13 is mounted on the 'cover body of the electronic device by the mounting holes 1322. The connecting portion 134 has a substantially plate shape, and has a pivot hole 1342 and a first fixing hole 344. The boring hole 1342 is a circular hole for the shaft u to pass through. The first fixing hole 1344 is in interference fit with the first fixing portion 124 of the first magnetic component 12 to fix the first magnetic component 12 on the rotating bracket, and the axis of the first magnetic component 12 is offset from the pivoting bracket 13 The axis of the hole 13 42. The friction plate 14 is a circular piece having a circular through hole 142 and a plurality of oil holes (4) around the through hole W. The friction member 14 is sleeved on the rotating shaft η by the through hole 142. The fixing bracket 15 includes a fixing portion 152 and a connecting portion 154 extending perpendicularly from the fixing portion 152. The fixing portion 152 is provided with a plurality of mounting holes 1522, and the fixing bracket 15 is mounted to the body of the electronic device by the mounting holes 1522. The connecting portion 154 has a substantially plate shape, and has a through hole 1542 and a second fixing hole 1544. The perforations 1542 are non-circular, for example, they may be triangular, square, φ elliptical, polygonal, or the like. The elastic member 16 is a disc-shaped elastic piece having a central opening, that is, its central portion is directed toward - (four) in the direction of its axis, and it has elasticity. - The elastic members 16 are disposed back, that is, the protruding portions of the two elastic members 16 are disposed together. The second magnetic member 17 includes a cylindrical base portion and a cylindrical portion 175n portion (7) extending outwardly from the end of the base portion (7) having a diameter smaller than the diameter of the base portion 172. The polarity of the second fixing portion 174 away from the end portion of the base portion i72 is N pole. The second fixing portion 174 of the second magnetic member 17 is for inserting into the second hole of the fixing bracket 15, and the axis of the second magnetic member 13 is offset from the axis of the through hole 1542 of the fixing bracket 15. After the assembly, the end of the second fixing portion 174 and the first solid element 12 are fixed. The ends of the crucible 124 are directly opposed to each other, so that the polarity of the end of the second fixing portion 174 is opposite to the polarity of the end portion of the first fixing portion 124. Of course, the polarity of the end portion of the second fixing portion 174 and the direction of the S and N poles of the end portion of the first fixing portion 124 may be changed, and only the opposite ends thereof may be opposite in polarity. The second magnetic element 17 may be a magnetic element such as a permanent magnet or an electromagnet. Specifically, in the present embodiment, the second magnetic element 17 is a permanent magnet. The spacer 18 is a circular plate with a central opening. The fastener 19 is a lock nut, which is generally hexagonal prism-shaped, and has a screw hole 192 at the center thereof. The thread 1142 of the limiting portion 114 of the rotating shaft 11 cooperates with the screw hole 192 of the fastening member 19 to fix the fastener 19 The detachment is fixed to the rotating shaft u, thereby preventing the shims 18 from coming off the rotating shaft n. The fastener 19 includes a lock portion 194' for increasing the friction between the fastener 19 and the spacer to prevent loosening of the fastener 19 after being engaged with the rotating shaft n15 due to the pressing. In the present embodiment, the lock preventing portion 194 is a plurality of projections provided on the end faces of the fasteners 19. Referring to FIG. 1 and FIG. 2, when the magnetic hinge structure 1 is assembled, first, the first fixing portion 124 of the first magnetic member 12 is inserted into the first fixing hole 1344 of the rotating bracket 13, and the second magnetic member 17 is The second fixing portion 174 is inserted into the second fixing hole 1544 of the fixing bracket 15 to fix the first magnetic member 12 and the second magnetic member 17 to the rotating bracket 13 and the fixing bracket 15, respectively. Then, the rotating bracket 13, the two friction members 14, the fixing bracket 15, the two elastic members 16, and the spacer 18 are sequentially sleeved on the rotating shaft 11. Finally, it will tighten 9 1351911 to screw the fastener 19 fastener 19 onto the thread 1142 of the rotating shaft U and fix it on the rotating shaft 11. 1 to 3 'in the initial state, the H-portion m of the first magnetic element 12 and the second fixed portion m of the second magnetic element 17 are attracted to 1 so that the first magnetic element 12 and the second magnetic element are located - The shaft is at the wire, and the magnetic chain structure is locked. When the first movable member 13 is turned toward the first direction, the first magnetic member 12 rotates together with the rotating bracket 13: the first magnetic member 12 is gradually separated from the second magnetic member 17, and the P first magnetic member 7G and the second magnetic member 17 are separated. The axis gradually deviates. During this process, when the rotating bracket 13 is rotated to a specific position, the frictional force generated between the frictional force between the two friction members 14, the rotating bracket 13 and the fixed bracket 15 in the axial direction of the rotating shaft u is equal to the first magnetic element. The magnetic force generated between the attracting magnetic force between the 13 and the second magnetic element 17 in the axial direction of the rotating shaft u. When the rotating bracket 13 is rotated through the specific position to reach a friction torque greater than the magnetic moment, the rotating bracket: 13 can be arbitrarily stopped with respect to the fixed bracket 15, and the hinge structure 100 is in a freely positioned state. When the rotary holder 13 is rotated in the opposite direction, the first magnetic member gradually approaches the second magnetic member 17. During this process, when the rotating bracket 13 is not rotated through the aforementioned specific position, the magnetic hinge structure 100 is in a freely positioned state; when the rotating bracket 13 is rotated through the aforementioned specific position, the first magnetic element 13 and the second magnetic element 17 are The magnetic moment generated by the attraction magnetic force in the axial direction of the rotating shaft 11 is greater than the frictional force generated by the friction between the two friction members 14, the rotating bracket 13 and the fixed bracket 15 in the axial direction of the rotating shaft 1; 13 automatically returns to the initial locking position under the action of the magnetic moment. 1351911 - In the above magnetic hinge structure 100, the magnetic force generated by the attraction magnetic force between the first magnetic element 12 and the second magnetic π element 17 in the axial direction of the rotating shaft n is changed by the distance between the two Variety. The rotating bracket 13 and the fixed bracket 15 generate friction by pressing, and the frictional force generates a frictional moment in the axial direction of the rotating shaft n. When the magnetic moment is less than or equal to the friction torque, the magnetic hinge structure 100 is in a freely positioned state; when the magnetic moment is greater than the frictional moment, the magnetic hinge structure 100 is in a self-locking state. In addition, when the magnetic hinge structure 1 应用于 is applied to an electronic device such as a liquid crystal display or a notebook computer, it is also necessary to consider the unfavorable moment. When the magnetic moment is less than or equal to the combined moment of the friction torque and the weight of the display screen, the magnetic hinge structure 1〇〇 is in a freely positioned state; when the magnetic moment is greater than the combined moment of the friction torque and the weight of the display screen, the magnetic hinge structure 1〇〇 is in a self-locking state. Therefore, the above-described magnetic hinge structure 100 has both a self-locking function and a free positioning function. 4 is similar to the elastic hinge structure 100 of the first embodiment, and includes a rotating shaft 21, a first magnetic element 22, a rotating bracket 23, a friction member 24, and a fixing. The bracket 25, the elastic member 26, the second magnetic member 27, the spacer 28, and a fastener 29. The first magnetic member 22 is fixed to the rotating bracket 23, and the second magnetic member 27 is fixed to the fixing bracket 25. The rotating bracket 23, the friction member 24, the fixing bracket 25, the elastic member 26 and the spacer 28 are all sleeved on the rotating shaft 21. The difference is that the magnetic hinge structure 200 includes two first magnetic elements 22, and the two first magnetic elements 22 are symmetrically fixed to the rotating bracket 23 with respect to the pivot hole 2342 of the rotating bracket 23. The magnetic moment generated by the magnetic force between the second magnetic members 27 causes the magnetic hinge structure 2 to have an automatic locking position of 11 1351911 . It can be understood that the 'first magnetic element 12, 22 and the second magnetic element 17, 27 are not limited to direct (four), or indirect (four), for example, the first magnetic element 12, 22 and the second magnetic element 17, 27 are two friction parts. 14 24 is covered, and only the magnetic fields of the magnetic members 12, 22 and the second magnetic members 17, 27 can penetrate the butt friction members 14, 24. It can be understood that the number of the first magnetic elements 12, 22 is not limited to one or one, and may be two or more. Only the first magnetic element 22 and the second magnetic elements 17 and 27 are disposed in opposite directions. Just fine. Further, the magnetic members 12 and 22 and the second magnetic members 17 and 27 are not limited to being fixed to the rotating brackets 13 and 23 and the fixing brackets 15 and 25 by means of an interference fit, and other fixing methods may be employed, for example. Threading is provided at one end of the first magnetic element 12, 22 and the second magnetic element 17, 27, and a screw hole is screwed into the rotating bracket 13, 23 and the fixing bracket 15 and 25 respectively. It can be understood that the elastic members 16, 26 are not limited to the disc-shaped elastic pieces, and may be a wave-shaped elastic piece, a bow-shaped elastic piece and a spring. In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, which is not intended to limit the scope of the patent application 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 exploded view of a magnetic hinge structure according to a first embodiment of the present invention. 12 1351911 FIG. 2 is an assembled view of the magnetic hinge structure of FIG. Figure 3 is a state diagram of the magnetic hinge structure of Figure 1 as it rotates. 4 is a perspective exploded view of a magnetic hinge structure according to Embodiment 2 of the present invention;
【主要元件符號說明】 磁性较鍵結構 100 、 200 第一固定孔 1344 轉軸 11、21 摩擦件 14、24 軸部 112 通孔 142 限位部 114 油孔 144 螺紋 1142 固定支架 15 > 25 抵擋部 116 穿孔 1542 第一磁性元件 12、22 第二固定孔 1544 基部 122、172 彈性件 16 ' 26 第一固定部 124 第二磁性元件 17、27 轉動支架 13、23 第二固定部 174 固定部 132、152 墊片 18、28 裝配孔 1322、1522 緊固件 19、29 連接部 134 、 154 螺孔 192 樞接孔 1342 、 2342 防鬆部 194 13[Main component symbol description] Magnetic key structure 100, 200 First fixing hole 1344 Rotary shaft 11, 21 Friction member 14, 24 Shaft portion 112 Through hole 142 Limit portion 114 Oil hole 144 Thread 1142 Fixing bracket 15 > 25 Resistant portion 116 perforation 1542 first magnetic element 12, 22 second fixing hole 1544 base 122, 172 elastic member 16' 26 first fixing portion 124 second magnetic member 17, 27 rotating bracket 13, 23 second fixing portion 174 fixing portion 132, 152 spacers 18, 28 mounting holes 1322, 1522 fasteners 19, 29 connecting portions 134, 154 screw holes 192 pivoting holes 1342, 2342 anti-loose portion 194 13