200930244 •九、發明說明： -【發明所屬之技術領域】 本發明涉及一種滑動機構， 話、心等攜帶型電子裝置之滑動^及—種用於行動電 【先前技術】 近年來，攜帶型電子裝置已經越來 帶型電子裝置更是倍受消費者之青睞盘直；滑動型攜 ❹ 習知滑動型攜帶型電子褒置主要分為三類。 手動式之滑動機構，亦即由使 、類採用 滑蓋。還有一類採 者猎由王程手動方式移動 疋穷類株用丰自動式之滑動機構 動該滑蓋至一段距離，滑蓋會自/、要推 態或完全打& f ^ 動移動疋位至元全關閉狀 使用：dr:採用全自動式之滑動機構， ρ可實現滑動機構全程過程之自動移動。 動機構操作不便’全自動滑動機構結構較為複 2而+自動滑動機構使用較為方便，且相對全自動滑動 0機構來說結構較為簡單，故各種攜帶型電子裝置中多採用 半自動滑動機構。 ^圖1所示，-種習知攜帶型電子裝置滑動機構，其 包括第一平板50及第二平板60，第一平板5〇及第二平板 60分別固定在電子裝置之主單元及顯示單元上，該主單元 包括有處於主單元前表面下方之多媒體鍵及處於該多媒體 鍵上方之數字鍵。第一平板5〇上設置有止擋槽53，二第 一磁鐵55分別置於第一平板5〇之縱向中部處。第二平板 60上設置有用於與第一平板50之止擋槽53相配合之止擋 200930244 •彈簧63,第二平板6〇上還設有二第二磁鐵“以與第一 .鐵55相對應，第二磁鐵65及第一磁鐵“相互排斥。第二 平板60可藉由導向肋61及第一平板5〇上之導向通道相： 第-平板5G滑動。當顯示單元與主單元處於關閉狀態時， 第一平板50與第二平板6〇重迭，並且第一平板5〇靠近正 擋槽53之一端與第二平板6〇靠近止擋彈簧趵之一端平 %而第一磁鐵55與第二磁鐵65相隔一定距離。當使用 者把顯示單元對著主單元往該揭帶型電子裝置開啟方向推 動時，第二平板6G相對第—平板5G往圖i箭頭所示方向 滑動直至止擋彈簧63與止擋槽53配合，此時主單元露出 了多媒體鍵’使用者可在此位置進行多媒體功能操作，繼 續推動顯示單元，第二平板6〇之第二磁鐵65逐漸靠近第 一平板50之第一磁鐵55直至二者到達相互面對之位置， 此時磁鐵65與磁鐵55排斥力最大’顯示單元藉由此排斥 力及使用者施加之推力繼續相對主單元滑動直至該攜帶型 ❹電子裝置處於完全開啟狀態，此時第一平板5〇及第二平板 6〇與圖1所示箭頭反方向之—端基本相互平齊。 上述滑動機構包含有二相對之第一磁鐵55盘第二磁 鐵65,當第一平板5〇及第二平板⑼滑至相應位置時，第 :磁鐵55與第二磁鐵65纟滑動機構之厚度方向上錯開於 一平面，故使滑動機構整體之厚度較大，從而導致應用該 f動機構之攜帶㈣子裝置厚度較大，無法毅目前對播 f型電子裝置輕、薄、短小之市場需求。 【發明内容】 200930244 鑒於上述内容，有必要提供一種厚度較小之滑動機構。 . 一種滑動機構，包括滑動板、背板及磁力開合組件， 該磁力開合組件包括第一、第二磁性元件，其藉由該第一、 第一磁性元件間之磁力作用使滑動板相對背板滑動，第 、第一磁性元件沿背板滑動方向之中心剖面間距離小於 第一、第二磁性元件厚度總和之一半。 在滑動機構關閉及打開過程中由於第一、第二磁性元 ◎件幾乎位於同一平面内，故與習知技術相比，該滑動機構 之厚度相對較小，有利於相應攜帶型電子裝置之小型化、 輕薄化。 【實施方式】 下面將結合附圖及具體實施例對本發明之滑動機構做 進一步詳細說明。 凊參閱圖2,本發明第一較佳實施例之滑動機構1〇〇 包括背板10、滑動板20、背板滑軌30、磁銷42、套設於 ❹磁銷42内第一磁性元件44、磁套72以及套設於磁套72 之第二磁性元件74。 者板10大體為一矩形板，其包括一底板1〇2及二凸邊 104。凸邊1〇4為底板1〇2之二相對侧朝底板1〇2同一側彎 折突出少許而成。底板1〇2上一端還開設有一方形缺口 106 ’底板102中央且靠近背板1〇之一凸邊上設置有 —圓形銷孔108。 滑動板20大體為一矩形板’其包括一基部2〇2及二滑 槽204，滑槽204為基部202二相對側向基部同一侧向内 200930244 -彎折而成。該基部202大約在其中心位置靠近其中一滑槽 -204處亦開設有一圓形銷孔206。 背板滑執30大致為長條形結構，其二端分別形成有二 方形凸塊302,背板滑執30 —侧還開設有一沿背板滑軌30 長度方向延伸之開槽306,該開槽306與背板10之凸邊104 相互配合，背板滑執30容納於滑動板20之滑槽204，並 相對滑動板20固定。 磁銷42大致呈長方體狀，磁銷42上開設有一容納槽 ❹422，容納槽422用於收容固定第一磁性元件44。磁銷42 上還開設有一圓孔424，該圓孔424與滑動板20之圓形銷 孔206相對應，磁銷42藉由一鉚釘92及該圓孔424可轉 動地連接至滑動板20上。 磁套72同樣呈長方體狀，磁套72上開設有一容納空 間722，容納空間722 —端收容固定有第二磁性元件74， 另一端可供磁銷42活動地伸入或退出。磁套72上還開設 ❹有一圓孔724，該圓孔724與背板10之圓形銷孔108相對 應。磁套72藉由一鉚釘94及該圓孔724可轉動地連接至 背板10上。 本實施例中，第一、第二磁性元件44、74相互靠近之 端部極性相同。 裝配時，將第一磁性元件44設於磁銷42之容納槽422 内，形成第一磁性組件40，同時將第二磁性元件74設於 磁套72之容納空間722内，形成第二磁性組件70，之後 將第一磁性組件40部分插入第二磁性組件70之容納空間 200930244 -722中，從而組成一磁力開合組件80。接著將鉚釘92穿過 -磁銷42上之圓孔424及滑動板20上之圓形銷孔206從而 將第一磁性組件40可轉動地連接至滑動板20上，且將二 背板滑軌30分別嵌入到滑動板20之滑槽204，之後再將 背板10之二凸邊104分別插入背板滑軌30之二開槽306 中，最後將鉚釘94穿過磁套72上之圓孔724及背板10 上之圓形銷孔108從而將第二磁性組件70可轉動地連接至 背板10上。 ❹ 第一、第二磁性元件44、74較佳實施例為厚度相同， 且其沿背板滑動方向之中心剖面間距離為零，可以理解， 其厚度亦可不同且稍錯開設置亦可，即其沿背板滑動方向 之中心剖面間距離小於第一、第二磁性元件44、74厚度總 和之一半。 下面將詳細說明滑動機構100之滑動過程。請參照圖3 至圖5，圖3為滑動機構100之關閉狀態圖，圖4為滑動機構 0 100滑至中間位置狀態圖，圖5為滑動機構100打開狀態圖。 當滑動機構100處於關閉狀態時，如圖3所示，滑動板20位 於背板10之一端，此時磁銷42伸出磁套72之部分最長，第 一、第二磁性元件44、74之距離亦最遠。隨著使用者將滑 動板20從關閉狀態位置開始向背板10之另一端推動，磁銷 42及磁套72分別繞鉚釘92、94轉動，從而使磁銷42進一步 伸入磁套72，使第一磁性元件44逐漸向第二磁性元件74靠 近，二者間距離逐漸變小，第一、第二磁性元件44、74閒 之斥力逐漸增大，直至滑動板20滑至圖4所示之背板10之中 200930244 .間位置，主墙 此呀第—、第二磁性元件44、74之距離最小，直 運到最大’該斥力為滑動板20繼續向背板1〇滑動提供 了推力，該推力或者該推力與使用者之合成力使得滑動板200930244 • Nine, invention description: - [Technical field of invention] The present invention relates to a sliding mechanism, a sliding device of a portable electronic device such as a voice, a heart, and the like, which are used for mobile power. [Prior Art] In recent years, portable electronic Devices have become more and more popular with consumers. Straight-type portable devices are known to be classified into three categories. The manual sliding mechanism, that is, the sliding cover is used. There is also a type of picker hunting by Wang Cheng manual mode to move the poor type of plant with the automatic sliding mechanism to move the slide to a distance, the slide will be from /, to push or completely play & f ^ move 疋The position is fully closed and used: dr: adopts a fully automatic sliding mechanism, and ρ can realize the automatic movement of the sliding mechanism in the whole process. Inconvenient operation of the moving mechanism 'The structure of the fully automatic sliding mechanism is relatively complex 2 and the automatic sliding mechanism is more convenient to use, and the structure is relatively simple compared with the fully automatic sliding 0 mechanism. Therefore, semi-automatic sliding mechanisms are often used in various portable electronic devices. As shown in FIG. 1 , a conventional portable electronic device sliding mechanism includes a first flat plate 50 and a second flat plate 60. The first flat plate 5 and the second flat plate 60 are respectively fixed to the main unit and the display unit of the electronic device. The main unit includes a multimedia key below the front surface of the main unit and a numeric key above the multimedia key. The first plate 5 is provided with a stopper groove 53, and the two first magnets 55 are respectively placed at the longitudinal middle portions of the first plate 5''. The second plate 60 is provided with a stop 200930244 for cooperating with the stop groove 53 of the first plate 50. The spring 63 is further provided with a second magnet "on the second plate 6" to be associated with the first iron 55. Correspondingly, the second magnet 65 and the first magnet "repel each other. The second flat plate 60 is slidable by the guide rib 61 and the guide channel phase on the first flat plate 5: the first plate 5G. When the display unit and the main unit are in a closed state, the first flat plate 50 and the second flat plate 6 are overlapped, and the first flat plate 5 is adjacent to one end of the positive stop groove 53 and the second flat plate 6 is adjacent to one end of the stop spring 趵The first magnet 55 is spaced apart from the second magnet 65 by a certain distance. When the user pushes the display unit toward the main unit to the opening direction of the strip-type electronic device, the second plate 6G slides relative to the first plate 5G in the direction indicated by the arrow of FIG. i until the stop spring 63 cooperates with the stop groove 53. At this time, the main unit exposes the multimedia key 'the user can perform the multimedia function operation at this position, and continues to push the display unit, and the second magnet 65 of the second flat plate 6 is gradually approached to the first magnet 55 of the first flat plate 50 until both Reaching the position facing each other, at this time, the magnet 65 and the magnet 55 have the greatest repulsive force. The display unit continues to slide relative to the main unit by the repulsive force and the thrust applied by the user until the portable electronic device is fully opened. The first plate 5 〇 and the second plate 6 基本 are substantially flush with each other in the opposite direction to the arrow shown in FIG. 1 . The sliding mechanism includes two opposite first magnets 55 and a second magnet 65. When the first flat plate 5 and the second flat plate (9) slide to the corresponding positions, the thickness direction of the sliding mechanism of the first magnet 55 and the second magnet 65 The upper part is offset from the plane, so that the thickness of the sliding mechanism as a whole is large, so that the carrying device of the f-moving mechanism has a large thickness, and the market demand for the light, thin and short of the f-type electronic device cannot be determined. SUMMARY OF THE INVENTION 200930244 In view of the above, it is necessary to provide a sliding mechanism having a small thickness. a sliding mechanism comprising a sliding plate, a back plate and a magnetic opening and closing assembly, the magnetic opening and closing assembly comprising first and second magnetic elements, wherein the sliding plate is opposite by the magnetic force between the first and first magnetic elements The back plate slides, and the distance between the central cross sections of the first and first magnetic elements along the sliding direction of the back plate is less than one half of the sum of the thicknesses of the first and second magnetic elements. Since the first and second magnetic element members are located in the same plane during the closing and opening of the sliding mechanism, the thickness of the sliding mechanism is relatively small compared with the prior art, which is advantageous for the small portable electronic device. Thin, thin. [Embodiment] Hereinafter, the sliding mechanism of the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. Referring to FIG. 2, the sliding mechanism 1 of the first preferred embodiment of the present invention includes a backing plate 10, a sliding plate 20, a backing plate rail 30, a magnetic pin 42, and a first magnetic component sleeved in the neodymium magnet 42. 44. A magnetic sleeve 72 and a second magnetic element 74 sleeved on the magnetic sleeve 72. The panel 10 is generally a rectangular panel comprising a bottom panel 1〇2 and two flanges 104. The flange 1〇4 is formed by bending a pair of opposite sides of the bottom plate 1〇2 toward the same side of the bottom plate 1〇2. A rectangular notch 106 ′ is also formed at one end of the bottom plate 1 ′ 2 . The center of the bottom plate 102 and a flange pin 108 is disposed on one of the flanges adjacent to the back plate 1 . The sliding plate 20 is generally a rectangular plate </ RTI> comprising a base portion 2 〇 2 and two sliding grooves 204. The sliding groove 204 is formed by bending the base portion 202 opposite the lateral side of the base portion inwardly. The base portion 202 also has a circular pin hole 206 at a center position adjacent to one of the chutes -204. The back plate sliding 30 is substantially an elongated structure, and the two ends are respectively formed with a square convex block 302. The back plate sliding 30 is further provided with a slot 306 extending along the length direction of the back plate sliding rail 30. The groove 306 cooperates with the flange 104 of the back plate 10, and the back plate slide 30 is received in the sliding groove 204 of the sliding plate 20 and fixed relative to the sliding plate 20. The magnetic pin 42 has a substantially rectangular parallelepiped shape. The magnetic pin 42 defines a receiving slot 422 for receiving and fixing the first magnetic component 44. The magnetic pin 42 further defines a circular hole 424 corresponding to the circular pin hole 206 of the sliding plate 20. The magnetic pin 42 is rotatably coupled to the sliding plate 20 by a rivet 92 and the circular hole 424. . The magnetic sleeve 72 is also in the shape of a rectangular parallelepiped. The magnetic sleeve 72 defines a receiving space 722. The receiving space 722 receives the second magnetic element 74 at its end, and the other end allows the magnetic pin 42 to movably extend or exit. The magnetic sleeve 72 is further provided with a circular hole 724 corresponding to the circular pin hole 108 of the back plate 10. The magnetic sleeve 72 is rotatably coupled to the backing plate 10 by a rivet 94 and the circular hole 724. In this embodiment, the ends of the first and second magnetic members 44, 74 are close to each other with the same polarity. During assembly, the first magnetic component 44 is disposed in the receiving groove 422 of the magnetic pin 42 to form the first magnetic component 40, and the second magnetic component 74 is disposed in the receiving space 722 of the magnetic sleeve 72 to form the second magnetic component. 70. The first magnetic component 40 is then partially inserted into the receiving space 200930244-722 of the second magnetic component 70 to form a magnetic opening and closing assembly 80. Next, the rivet 92 is passed through the circular hole 424 on the magnetic pin 42 and the circular pin hole 206 on the sliding plate 20 to rotatably connect the first magnetic component 40 to the sliding plate 20, and the two back plate rails are 30 is respectively inserted into the sliding slot 204 of the sliding plate 20, and then the two convex edges 104 of the backing plate 10 are respectively inserted into the two slots 306 of the backing plate rail 30, and finally the rivet 94 is passed through the circular hole on the magnetic sleeve 72. The circular pin holes 108 on the 724 and the backing plate 10 thereby rotatably couple the second magnetic assembly 70 to the backing plate 10. Preferably, the first and second magnetic members 44 and 74 have the same thickness, and the distance between the central cross-sections of the first and second magnetic members is the same, and the thickness may be different and may be slightly staggered. The distance between the central cross-sections of the sliding direction of the backing plate is less than one half of the sum of the thicknesses of the first and second magnetic members 44, 74. The sliding process of the sliding mechanism 100 will be described in detail below. 3 to FIG. 5, FIG. 3 is a closed state view of the sliding mechanism 100, FIG. 4 is a state in which the sliding mechanism 0 100 is slid to an intermediate position, and FIG. 5 is a view showing an open state of the sliding mechanism 100. When the sliding mechanism 100 is in the closed state, as shown in FIG. 3, the sliding plate 20 is located at one end of the backing plate 10, at which time the portion of the magnetic pin 42 extending beyond the magnetic sleeve 72 is the longest, and the first and second magnetic members 44, 74 are The farthest distance is also. As the user pushes the sliding plate 20 from the closed state to the other end of the backing plate 10, the magnetic pin 42 and the magnetic sleeve 72 rotate around the rivets 92, 94, respectively, so that the magnetic pin 42 further extends into the magnetic sleeve 72, so that A magnetic element 44 gradually approaches the second magnetic element 74, the distance between them gradually becomes smaller, and the repulsive force of the first and second magnetic elements 44, 74 gradually increases until the sliding plate 20 slides to the back shown in FIG. In the position of the board 10, 200930244, the main wall, the second magnetic element 44, 74 has the smallest distance, and is directly transported to the maximum 'this repulsive force provides the thrust for the sliding plate 20 to continue sliding to the back plate 1〇, the thrust Or the combined force of the thrust and the user makes the sliding plate
At繼、另向則滑動，直至滑動板20滑動到圖5所示之打開狀 〜此時，滑動機構1〇〇被完全打開。.滑動機構1〇〇關閉過 程之工作原理與此相同。 ❹ Ο 本發明中第一、第二磁性元件44、74在滑動機構1〇〇 、、爿及打開過程中幾乎位於同一平面内，而不會相互重 迭’故與習知技術相比，該滑動機構100之厚度相對較小。 另卜第、第二磁性元件44、74分別插入到磁銷42及 磁套72中，可形成第一磁性組件4〇及第二磁性組件7〇， 將第一磁性組件40可滑動地伸入第二磁性組件7〇中即構 成磁力開合組件80,此磁力開合組件8〇可作為一整體藉 由鉚釘方便地連接絲對職之部件，故其额化程度^ 高。 ^可以理解，第一磁性組件40可採用其他連接件如螺栓 等與滑動板20連接，第二磁性組件7〇亦可採用其他連接 件與背板10連接。除此之外，第_、第二磁性 4、 74可以為例如磁鐵之磁性件。磁套72上可設置卡固件， 與磁銷42配合，從而使磁銷42不可滑離磁套。 本發明第二較佳實施例滑動機構之結構與第一較佳實 施例類似’不同的是第二較佳實施例之滑動機構利用磁性 元件之引力實現其開合。該滑動機構包括相同之第一磁力 開合組件及第二磁力開合組件，該二磁力開合組件之社構 11 200930244 .與第一較佳實施例中磁力開合組件80之結構相同，其不同 在於該二磁力開合組件之第一、第二磁性元件相互靠近之 端部極性相反。每一磁力開合組件二端分別連接至背板及 滑動板，且二磁力開合組件分開設於背板及滑動板前後二 端位置。 當滑動機構處於關閉狀態時，第一磁力開合組件之磁 銷伸入磁套之部分最長，而第二磁力開合組件之磁銷伸入 ❹磁套之部分最短，此時第一磁力開合組件之第一、第二磁 性元件間之引力最大，該引力使滑動板相對背板定位於此 關閉狀態，且此時第二磁力開合組件之第一、第二磁性元 件閒之引力最小。推動滑動板使其從關閉狀態位置運動到 月板之另一端，第一磁力開合組件中之磁銷逐漸退出磁 套，其第一磁性元件逐漸向第二磁性元件逐漸遠離，同時 第二磁力開合組件中之磁銷進一步伸入磁套，第二磁力開 &、、且件中之第一磁性元件逐漸向第二磁性元件逐漸靠近， ❹推動滑動板至一定位置後，第二磁力開合組件之第一、第 二磁性元件間之引力使滑動件繼續滑動，直至滑動機構完 全打開狀態。此打開狀態下，第二磁力開合組件之第一、 第二磁性元件間之引力最大，而第一磁力開合組件之第 一、第二磁力元件間之引力最小。滑動機構關閉過程之工 作原理與此相同。 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方式，本 發明之範圍並不以上述實施方式為限，舉凡熟悉本案技藝 12 200930244 •之人士，於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係一種習知滑動機構之立體分解圖。 圖2係本發明第一較佳實施例之滑動機構立體分解圖。 圖3係本發明第一較佳實施例之滑動機構關閉狀態圖。 圖4本發明第一較佳實施例之滑動機構滑至中間位置 狀態圖。 ® 圖5係本發明第一較佳實施例之滑動機構打開狀態圖。 【主要元件符號說明】 背板 10 滑動機構 100 底板 102 凸邊 104 缺口 106 圓形銷孔 108 > 206 滑動板 20 基部 202 滑槽 204 背板滑軌 30 凸塊 302 開槽 306 第一磁性組件 40 磁銷 42 容納槽 422 圓孔 424、724 第一磁性元件 44 第二磁性組件 70 磁套 72 容納空間 722 第二磁性元件 74 磁力開合組件 80 鉚釘 92、94 13At, the other slides until the slide plate 20 slides to the open shape shown in Fig. 5 - at this time, the slide mechanism 1 is fully opened. The sliding mechanism 1 〇〇 closing process works the same way. Ο Ο In the present invention, the first and second magnetic members 44, 74 are almost in the same plane during the sliding mechanism 1〇〇, 爿, and opening, and do not overlap each other, so compared with the prior art, The thickness of the sliding mechanism 100 is relatively small. The first and second magnetic components 44 and 74 are respectively inserted into the magnetic pin 42 and the magnetic sleeve 72 to form the first magnetic component 4〇 and the second magnetic component 7〇, and the first magnetic component 40 is slidably extended. The second magnetic component 7A constitutes a magnetic opening and closing assembly 80. The magnetic opening and closing assembly 8 can be used as a whole to conveniently connect the components of the wire to the working part by the rivet, so that the degree of the prior art is high. It can be understood that the first magnetic component 40 can be connected to the sliding plate 20 by other connecting members such as bolts, and the second magnetic component 7 can be connected to the backing plate 10 by other connecting members. In addition to this, the first and second magnets 4, 74 may be magnetic members such as magnets. A fastener may be disposed on the magnetic sleeve 72 to cooperate with the magnetic pin 42 so that the magnetic pin 42 cannot slide away from the magnetic sleeve. The structure of the sliding mechanism of the second preferred embodiment of the present invention is similar to that of the first preferred embodiment. The sliding mechanism of the second preferred embodiment utilizes the attraction of the magnetic member to achieve its opening and closing. The sliding mechanism includes the same first magnetic opening and closing assembly and a second magnetic opening and closing assembly, and the structure of the magnetic opening and closing assembly is the same as that of the magnetic opening and closing assembly 80 of the first preferred embodiment. The difference is that the first and second magnetic elements of the two magnetic opening and closing components are opposite in polarity to each other. The two ends of each of the magnetic opening and closing components are respectively connected to the back plate and the sliding plate, and the two magnetic opening and closing components are respectively disposed at the front and rear ends of the back plate and the sliding plate. When the sliding mechanism is in the closed state, the magnetic pin of the first magnetic opening and closing assembly protrudes into the magnetic sleeve to be the longest portion, and the magnetic pin of the second magnetic opening and closing assembly protrudes into the magnetic sleeve to be the shortest portion, and the first magnetic force is opened. The gravitational force between the first and second magnetic components of the assembly is the largest, and the gravitational force positions the sliding plate relative to the back plate in the closed state, and at this time, the first and second magnetic components of the second magnetic opening and closing assembly have the least gravity . Pushing the sliding plate to move from the closed position to the other end of the moon plate, the magnetic pin in the first magnetic opening and closing assembly gradually withdraws from the magnetic sleeve, and the first magnetic element gradually gradually moves away from the second magnetic element while the second magnetic force The magnetic pin in the opening and closing assembly further extends into the magnetic sleeve, the second magnetic force opens, and the first magnetic element in the member gradually approaches the second magnetic element, and after the sliding plate is pushed to a certain position, the second magnetic force The gravitational force between the first and second magnetic members of the opening and closing assembly causes the slider to continue to slide until the sliding mechanism is fully opened. In the open state, the attraction between the first and second magnetic members of the second magnetic opening and closing assembly is the largest, and the attraction between the first and second magnetic members of the first magnetic opening and closing assembly is the smallest. The sliding mechanism closing process works in the same way. In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those skilled in the art of the present invention 12 200930244 are equivalently modified by the spirit of the invention. Or variations, are to be included in the scope of the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view of a conventional sliding mechanism. Figure 2 is an exploded perspective view of the sliding mechanism of the first preferred embodiment of the present invention. Fig. 3 is a view showing the closed state of the sliding mechanism of the first preferred embodiment of the present invention. Fig. 4 is a view showing the state in which the sliding mechanism of the first preferred embodiment of the present invention is slid to the intermediate position. Figure 5 is a view showing the open state of the sliding mechanism of the first preferred embodiment of the present invention. [Main component symbol description] Back plate 10 Sliding mechanism 100 Base plate 102 Flange 104 Notch 106 Round pin hole 108 > 206 Sliding plate 20 Base 202 Chute 204 Back plate rail 30 Bump 302 Slot 306 First magnetic component 40 magnetic pin 42 receiving groove 422 circular hole 424, 724 first magnetic element 44 second magnetic component 70 magnetic sleeve 72 accommodating space 722 second magnetic element 74 magnetic opening and closing assembly 80 rivet 92, 94 13