200524372 (1) 玫、發明說明 【發明所屬之技術領域】 本發明關於一種電動鉸鏈裝置，使用在安裝於-特別 是-行動電話、個人數位助理、筆記型電腦等之蓋或類似 者的開啓與關閉的操作。 【先前技術】 此領域中的傳統技術之一是韓國新型專利 20-0 1 74 7 66號。此正式公報中所述的行動電話揭示一種電動 鉸鏈裝置’且此鉸鏈裝置容納在具有數字鍵盤的主要本體 與具有螢光幕的蓋部分（可移動物件）之間的鉸鏈連接中 ，使行動電話的蓋部分能夠電動開啓與關閉。因爲此鉸鏈 裝置必須容納在行動電話的鉸鏈部分中，所以使用微型馬 達。使用微型馬達的結果，必須增加扭矩，且採用齒輪式 馬達’以彌補扭矩的短缺。爲了允許蓋部分的電動開啓/ 關閉與人工開啓/關閉，一突起設在齒輪嚙合的馬達之輸 出軸的一端’而一用於裝配突起於其內的凹部設在蓋側。 所以’蓋部分藉由電動開啓/關閉時突起與凹部之間的嚙 合力而開啓及關閉，且突起在人工開啓/關閉時脫離凹部 ’以允許蓋部分自由開啓/關閉。 專利文件1 :韓國新型專利20_ 0 1 74 7 66號 專利文件2 :日本新型專利3 〇 7 9 8 2 〇號 專利文件 曰本先行公開專利申請案1 ]-]】2 6 3 0號 -4 - 200524372 (2) 【發明內容】 然而，上述傳統電動鉸鏈裝置具有下列問題。即，如 果突起與凹部之間的嚙合力設定爲太強，則凹凸嚙合在蓋 部分的電動開啓/關閉時變成比較不可能破裂，於是變成 比較難以人工開啓及關閉蓋部分。此外，如果在蓋部分的 電動開啓/關閉時，使用者強迫停止其開啓/關閉，則齒輪 機構可能損壞。對比於此，如果突起與凹部之間的嚙合力 設定爲太弱，則即使在蓋部分的電動開啓/關閉時使用者 強迫停止開啓/關閉操作的狀況，齒輪機構將變成比較不 可能損壞，但是將發生蓋部分的電動開啓/關閉期間凹凸 嚙合分開的狀況。依此方式，電動鉸鏈裝置必須考慮滿足 在人工操作時避免損壞齒輪機構及容易開啓/關閉蓋部分 二者，於是具有鑑於二種開啓/關閉操作-蓋部分的人工開 啓/關閉及電動開啓/關閉-之難以使裝置微型化的問題。 本發明之一目的是提供一種電動鉸鏈裝置，其構造是 考慮到二種轉動操作-可移動物件的人工轉動及電動轉動-而適於精巧化。 爲了達成以上的目的，一種依據本發明的電動鉸鏈裝 置是用於藉由具備齒輪機構的馬達轉動可移動物件的電鉸 鏈裝置，電鉸鏈裝置包含··一第一轉動構件，可轉動地接 合至一與齒輪機構互鎖的輸出軸，第一轉動構件適於耦合 至可移動物件·’一第二轉動構件，可轉動地接合至輸出軸 ，且經由第一凹凸嚙合部分耦合至第一轉動構件；一第三 200524372 (3) 轉動構件，適於與輸出軸一起轉動，且經由第二凹凸嚙合 部分耦合至第二轉動構件；偏壓裝置，位於設在第二轉動 構件中的第一嚙合部分與設在第二轉動構件中的第二嚙合 部分之間，偏壓裝置適於壓迫第一嚙合部分頂住第一轉動 構件，且壓迫第二嚙合部分頂住第三轉動構件；及鎖定裝 置’用於在馬達停止期間鎖定第二轉動構件。 此電動鉸鏈裝置鑑於馬達本身缺乏扭矩而具備齒輪機 構，且考慮到在人工操作期間避免損害齒輪機構及使可移 動物件容易轉動。當馬達啓動俾使以電動轉動可移動物件 時，第三轉動構件開始隨著輸出軸的轉動而轉動。這時候 ，偏壓裝置使第三轉動構件與第二轉動構件中的第二嚙合 部分之間維持凹凸嚙合狀態，以致於第二轉動構件也跟隨 第三轉動構件轉動。此外，偏壓裝置使第二轉動構件中的 第一嚙合部分與第一轉動構件之間維持凹凸支持狀態，以 致於桌一轉動構件跟隨第二轉動構件轉動。此外，當第一 轉動構件轉動時，可移動物件也跟隨它轉動。以此方式， 輸出軸的轉動力自第三轉動構件循序傳送到第一轉動構件 。即使在可移動物件的電動轉動中途，使用者強迫停止轉 動’第二轉動構件繼續空轉，而嚙合是在支持力比第一凹 凸嚙合部分的支持力弱的第二凹凸嚙合部分釋放。結果， 輸出軸可以連續維持轉動，以不施加多餘的負載至齒輪機 構，因而避免損害齒輪機構。另一方面，當使用者人工轉 動可移動物件時’馬達維持在關閉狀態，且第二轉動構件 由鎖定裝置保持停止。所以，第一凹凸嚙合部分的嚙合狀 -6 - 200524372 (4) 態由可移動物件的人工轉動釋放，以致於可移動物件可以 由手自由轉動。此結構的電鉸鏈裝置考慮到由可移動物件 的人工轉動與電動轉動組成的二種轉動，且彌補微型馬達 的的扭矩的短缺，且在促進微型化方面非常有效。 較佳地，偏壓裝置包含· 一第一壓縮彈簧，其位置是 環繞第一嚙合部分與第二嚙合部分之間的輸出軸，第一壓 縮彈簧的一端接觸第一嚙合部分，另一端接觸第二嚙合部 分；及一第二壓縮彈簧，其位在第一壓縮彈簧內部，以環 繞第一嚙合部分與第二嚙合部分之間的輸出軸，第二壓縮 彈簧的一端接觸第一嚙合部分，另一端接觸設在輸出軸上 的彈簧座。 藉由採用如上述的第一壓縮彈簧與第二壓縮彈簧，二 彈簧的力賦予第一凹凸嚙合部分，且一彈簧的力賦予第二 凹凸嚙合部分。所以，第二凹凸嚙合部分的支持力變成比 第一凹凸嚙合部分的支持力弱，因而可以提升人工轉動可 移動物件的力，即，所謂人工轉動力，且減少馬達啓動時 的扭矩負載。此構造在行體電話、個人電腦等的蓋部分的 開啓/關閉是有效的。 較佳地’鎖定裝置包含：一止動構件，位於第三轉動 構件附近，且可沿著輸出軸在衝動方向滑動；一爪部分， 在衝動方向自止動構件突起；一袋部分，設在第二轉動構 件的第一嚙合部分中，且允許爪部分的尖端插入衝動部分 ’偏壓I置’用於偏壓止動構件朝向第二轉動構件；及一 解除鎖定凸輪部分，在衝動方向自第三轉動構件-位於第 200524372 (5) 二嚙合部分與止動構件之間-突起朝向止動 拒偏壓裝置的偏壓力，在衝動方向移動止動 藉由採用此構造，當馬達啓動時，解除 與第三轉動構件隨著輸出軸的轉動一起轉動 輪部分抗拒偏壓力，衝動止動構件，而止動 在衝動方向移動。結果，爪部分離開設在第 的袋部分，以釋放鎖定狀態，因而第二轉動 由轉動狀態。於是，第二轉動構件轉動，以 構件。當第二轉動構件開始轉動時，袋部 向移動。結果，即使止動構件由偏壓裝置送 將不進入袋部分，且將連續保持接觸第二轉 持第一與第二轉動構件的轉動狀態。其後， 連續移動的袋部分時，第一與第二轉動構件 止’使第二轉動構件進入鎖定狀態。 【實施方式】 鑑於下列詳細說明，參考僅爲了解釋而 易於了解本發明。以下將參考附圖，說明本 °相同的部分儘可能由相同的參考符號標示 的說明。 依據本發明的電動鉸鏈裝置使用在安裝 個人數位助理、筆記型電腦等的可移動物件 )’且容許安置在狹窄空間處。如圖I所示 電話]主要由以下組成：一主要本體2，其 構件，且可抗 構件。 鎖定凸輪部分 。這時候，凸 構件的爪部分 二嚙合部分中 構件進入可自 跟隨第三轉動 分也在轉動方 回，爪部分也 動構件，以維 當爪部分移入 的轉動被迫停 展示的附圖， 發明的實施例 ，不需要多餘 於行動電話、 (蓋或類似者 ，掀開式行動 中設有〜數字 200524372 (6) 鍵盤的控制按鈕5與其他；一蓋部分（可移動物件）4， 其中裝有一液晶螢光幕3，及一用於傳送和接收無線電波 的天線5 ’且主要本體2與蓋部分4鉸接耦合通過一軸， 以允許室部分4的開啓與關閉。此外，此行動電話}是電 動開啓/關閉型，允許蓋部分4在利用人工操作與電力操 作時開啓/關閉’其中蓋部分4可以由一手開啓和關閉。 爲了完成此目的，一電鉸鏈裝置10容納在鉸鏈部分s中 〇 如圖2所示’此電鉸鏈裝置丨〇具備一當作驅動來源 的微型馬達1 1，其尺寸足以倂入掀開式行動電話1的鉸 鏈部分S中（例如，約6公厘桶徑）。此馬達1是心形馬 達，且具有一圓柱形金屬馬達外罩（桶）1 2。此外，一由 具有N與S極的永久磁鐵組成的靜子固定至此馬達外罩 1 2的內壁表面’且一具有圍繞於鐵心的線圈的轉子容納 在馬達外罩1 2內部。一支撐於軸承上的驅動軸1 3固定在 此轉子的中心，且在馬達外罩1 2中，一換向器固定至驅 動軸1 3的後端，而一對刷子滑動接觸此換向器。 此驅動軸1 3突起於馬達外罩1 2之外，以耦合至齒輪 機構]4中的減速齒輪系。此齒輪機構1 4具有一直徑約等 於馬達外罩】2之直徑的齒輪外罩1 6，且各種用於達成所 欲的減速的齒輪容納在此齒輪外罩1 6中。齒輪外罩1 6具 備一托架1 7，用於允許齒輪外罩螺合至行動電話]的主 要本體2。 一輸出軸]8自此齒輪機構1 3的則端突起。如圖2與 冬 200524372 3所示，輸出軸1 8的遠端設定在第一轉動構件20的中心 孔2 0e中，而栓槽部分20a形成在周緣中。此第一轉動構 件20可轉動地接合至輸出軸1 8，且栓槽部分20a裝配於 設在蓋部分4的臂4 a中的輪轂部分4 b中（比較圖1 )。 此栓槽耦合達成蓋部分（可移動物件）4與第一轉動構件 2 0的整合運動。 第一轉動構件2 0附近的第二轉動構件2 1構成一圓柱 开谷窃’其由一碟形弟一嚼合部分25與一杯形第二嚼合 部分2 6組成。徑向突起的引導突起2 5 a設在第一嚙合部 分25的圓周中，在衝動方向延伸以容納個別引導突起 25a的引導溝槽26b形成在第二嚙合部分26中。當第一 嚼合部分2 5整合於第二嚙合部分2 6以構成第二轉動構件 2 1時，第一嚙合部分2 5可以與第二嚙合部分2 6 一起轉 動’且在衝動方向相對於第二嚙合部分2 6自由移動。 此外，輸出軸1 8設定在第二轉動構件2 1的中心孔 2 I e中，第二轉動構件2 ]可轉動地接合到輸出軸丨8，且 經由凹凸嚙合而耦合至第一轉動構件2〇。例如，相角爲 1 8 0 °的梯形剖面的二凹部2 〇 對立表面20b中，且相角爲 2 〇c形成在第一轉動構件的 爲1 8 0 °的梯形剖面的二突起 2 1 c形成在第二轉動構件2〗的第一嚙合部分25的對立袠 面2 ] b中’以裝配在個別凹部2 〇 c中（1 $圖5 )。所以，200524372 (1) Description of the invention [Technical field to which the invention belongs] The present invention relates to an electric hinge device, which is used for opening and closing of a cover or the like mounted on-in particular-a mobile phone, a personal digital assistant, a notebook computer, or the like. Close operation. [Prior art] One of the traditional technologies in this field is Korean New Patent No. 20-0 1 74 7 66. The mobile phone described in this official gazette discloses an electric hinge device ', and this hinge device is housed in a hinge connection between a main body with a numeric keypad and a cover portion (movable object) with a screen, so that the mobile phone The cover part can be opened and closed electrically. Because this hinge device must be housed in the hinge part of a mobile phone, a miniature motor is used. As a result of using a micromotor, torque must be increased and a geared motor 'must be used to make up for the shortage of torque. In order to allow the electric opening / closing and manual opening / closing of the cover portion, a protrusion is provided at one end of the output shaft of the gear-engaged motor and a recess for assembling the protrusion therein is provided on the cover side. Therefore, the 'cover portion is opened and closed by the engaging force between the protrusion and the recessed portion when the motor is opened / closed, and the protrusion is separated from the recessed portion when manually opened / closed' to allow the cover portion to be opened / closed freely. Patent Document 1: Korean New Patent No. 20_ 0 1 74 7 66 Patent Document 2: Japanese New Patent No. 3 007 9 8 2 0 Patent Document No. 1 Prior Public Patent Application 1]-]] 2 6 3 0-4 -200524372 (2) [Summary of the Invention] However, the above-mentioned conventional electric hinge device has the following problems. That is, if the engaging force between the protrusion and the recess is set too strong, the concave-convex engagement becomes less likely to break when the lid portion is electrically opened / closed, and it becomes more difficult to manually open and close the lid portion. In addition, if the user forcibly stops the opening / closing of the cover when it is electrically opened / closed, the gear mechanism may be damaged. In contrast, if the engagement force between the protrusion and the recess is set too weak, even if the user forcibly stops the opening / closing operation when the cover is electrically opened / closed, the gear mechanism will become less likely to be damaged, but A situation where the concave-convex meshing is separated during the electric opening / closing of the cover portion will occur. In this way, the electric hinge device must consider satisfying both of avoiding damage to the gear mechanism and easy opening / closing of the cover part during manual operation, so there are two types of opening / closing operations-manual opening / closing and electric opening / closing of the cover -It is difficult to miniaturize the device. An object of the present invention is to provide an electric hinge device having a structure that is suitable for compactness in consideration of two kinds of rotation operations-manual rotation of a movable object and electric rotation. In order to achieve the above object, an electric hinge device according to the present invention is an electric hinge device for rotating a movable object by a motor provided with a gear mechanism. The electric hinge device includes a first rotating member rotatably coupled to An output shaft interlocking with the gear mechanism, the first rotating member is adapted to be coupled to the movable object; a second rotating member is rotatably coupled to the output shaft, and is coupled to the first rotating member via the first concave and convex engaging portion A third 200524372 (3) a rotating member adapted to rotate with the output shaft and coupled to the second rotating member via a second concave-convex engaging portion; a biasing device located at the first engaging portion provided in the second rotating member And the second engaging portion provided in the second rotating member, the biasing device is adapted to press the first engaging portion against the first rotating member, and press the second engaging portion against the third rotating member; and the locking device ' For locking the second rotating member while the motor is stopped. This electric hinge device is equipped with a gear mechanism in view of the lack of torque of the motor itself, and it is considered to avoid damaging the gear mechanism and making the movable animal parts easy to rotate during manual operation. When the motor is started to rotate the movable object by electric power, the third rotating member starts to rotate as the output shaft rotates. At this time, the biasing device maintains a concave-convex engagement state between the third rotating member and the second engaging portion in the second rotating member, so that the second rotating member also rotates following the third rotating member. In addition, the biasing means maintains a concave-convex support state between the first engaging portion in the second rotation member and the first rotation member, so that a table rotation member follows the second rotation member. In addition, when the first rotating member rotates, the movable object also follows it. In this way, the rotation force of the output shaft is sequentially transmitted from the third rotation member to the first rotation member. Even during the electric rotation of the movable object, the user forcibly stops the rotation. The second rotating member continues to idle, and the meshing is released at the second concave-convex meshing portion where the supporting force is weaker than the first concave-convex meshing portion. As a result, the output shaft can be continuously maintained in rotation so as not to apply an excessive load to the gear mechanism, thereby avoiding damage to the gear mechanism. On the other hand, when the user manually rotates the movable object, the motor is maintained in the off state, and the second rotating member is kept stopped by the locking device. Therefore, the meshing state of the first concave-convex meshing portion is released by manual rotation of the movable object, so that the movable object can be freely rotated by the hand. The electric hinge device of this structure considers two kinds of rotations consisting of manual rotation and electric rotation of movable objects, and makes up for the shortage of torque of the micromotor, and is very effective in promoting miniaturization. Preferably, the biasing means includes a first compression spring positioned to surround the output shaft between the first engaging portion and the second engaging portion, one end of the first compression spring contacting the first engaging portion and the other end contacting the first Two engaging portions; and a second compression spring, which is located inside the first compression spring to surround the output shaft between the first engaging portion and the second engaging portion, one end of the second compression spring contacts the first engaging portion, and One end contacts a spring seat provided on the output shaft. By using the first compression spring and the second compression spring as described above, the force of the two springs is given to the first concave-convex engaging portion, and the force of the one spring is given to the second concave-convex engaging portion. Therefore, the supporting force of the second concave-convex engaging portion becomes weaker than the supporting force of the first concave-convex engaging portion, so that the force for manually rotating the movable object, that is, the so-called artificial turning force, can be increased, and the torque load at the time of starting the motor can be reduced. This structure is effective for opening / closing a cover portion of a mobile phone, a personal computer, and the like. Preferably, the 'locking device' comprises: a stopper member, which is located near the third rotating member, and can slide along the output shaft in the impulse direction; a claw portion, which protrudes from the stopper member in the impulse direction; a bag portion, which is provided at In the first engaging portion of the second rotating member, the tip of the claw portion is allowed to be inserted into the impulse portion 'biasing I' for biasing the stop member toward the second rotating member; and an unlocking cam portion is automatically opened in the impulse direction. The third rotating member-located between 200524372 (5) second engaging portion and the stop member-the biasing force of the protrusion toward the stop rejection biasing device moves the stop in the impulse direction by adopting this structure, when the motor starts, The rotation of the wheel part with the third rotation member following the rotation of the output shaft resists the biasing force, and the stopper member is impulse, and the stopper moves in the impulse direction. As a result, the claw portion is separated from the bag portion provided at the first to release the locked state, so that the second rotation is caused by the rotated state. Then, the second rotating member rotates to the member. When the second rotating member starts to rotate, the bag portion moves toward the direction. As a result, even if the stopper member is fed by the biasing means, it will not enter the bag portion, and will remain in contact with the rotation state of the second rotation first and second rotation members. Thereafter, when the bag portion is continuously moved, the first and second rotating members are stopped to bring the second rotating member into a locked state. [Embodiment] In view of the following detailed description, reference is made to the understanding of the present invention for explanation only. In the following, a description will be given with reference to the drawings, in which the same parts are denoted by the same reference symbols as much as possible. The electric hinge device according to the present invention is used for installing a movable object such as a personal digital assistant, a notebook computer, and the like, and is allowed to be placed in a narrow space. As shown in Figure I, the telephone] is mainly composed of the following: a main body 2, its components, and resistant components. Lock the cam section. At this time, in the second engaging part of the claw part of the convex member, the member can self-follow the third rotation point and return to the turning side, and the claw part also moves the member. The drawing shown by the rotation when the claw part moves in is forced to stop. The embodiment does not need to be more than a mobile phone, a cover or the like, which is provided with ~ number 200524372 in a flip-up action (6) control buttons 5 of the keyboard and other; a cover part (movable object) 4, which contains There is a liquid crystal screen 3, and an antenna 5 'for transmitting and receiving radio waves, and the main body 2 and the cover portion 4 are hingedly coupled through a shaft to allow opening and closing of the room portion 4. In addition, this mobile phone} is The electric opening / closing type allows the lid portion 4 to be opened / closed when using manual operation and electric operation. 'The lid portion 4 can be opened and closed by one hand. To accomplish this, an electric hinge device 10 is housed in the hinge portion s. As shown in FIG. 2 'This electric hinge device is provided with a micro motor 11 as a driving source, which is large enough to fit into the hinge part S of the mobile phone 1 (for example, , About 6 mm barrel diameter). This motor 1 is a heart-shaped motor and has a cylindrical metal motor cover (barrel) 12. In addition, a stator composed of permanent magnets with N and S poles is fixed to the motor cover An inner wall surface of 12 and a rotor with a coil surrounding the core are housed inside the motor housing 12. A driving shaft 13 supported on a bearing is fixed at the center of the rotor, and in the motor housing 12, A commutator is fixed to the rear end of the drive shaft 13 and a pair of brushes slide in contact with the commutator. The drive shaft 13 protrudes outside the motor housing 12 to be coupled to the reduction gear in the gear mechanism] 4 The gear mechanism 14 has a gear housing 16 having a diameter approximately equal to the diameter of the motor housing 2 and various gears for achieving a desired reduction are accommodated in the gear housing 16. The gear housing 16 is provided with a Bracket 17 is used to allow the gear housing to be screwed to the main body of the mobile phone]. An output shaft] 8 protrudes from the end of the gear mechanism 13. As shown in Figure 2 and winter 200524372 3, the output shaft 1 The distal end of 8 is set in the center hole 2 of the first rotating member 20 0e, and the bolt groove portion 20a is formed in the peripheral edge. This first rotating member 20 is rotatably coupled to the output shaft 18, and the bolt groove portion 20a is fitted to the hub portion 4 provided in the arm 4a of the cover portion 4. b (comparative figure 1). This bolt-groove coupling achieves the integrated movement of the cover portion (movable object) 4 and the first rotating member 20. The second rotating member 21 near the first rotating member 20 forms a cylindrical opening. Gushou 'is composed of a dish-shaped chewing part 25 and a cup-shaped second chewing part 26. The radially protruding guide protrusion 2 5 a is provided in the circumference of the first meshing part 25 and extends in the impulse direction. A guide groove 26 b to receive the individual guide protrusion 25 a is formed in the second engaging portion 26. When the first chewing portion 25 is integrated with the second meshing portion 26 to constitute the second rotating member 21, the first meshing portion 25 can be rotated together with the second meshing portion 26 and is opposite to the first meshing portion in the impulse direction. The two engaging parts 2 6 move freely. In addition, the output shaft 18 is set in the center hole 2 I e of the second rotating member 21, and the second rotating member 2] is rotatably coupled to the output shaft 8 and is coupled to the first rotating member 2 via the concave-convex meshing. 〇. For example, the two concave portions 20 of the trapezoidal cross section 20b with a phase angle of 180 °, and the two protrusions 2c of the trapezoidal cross section of 180 ° formed on the first rotating member 2c It is formed in the opposite facing surface 2] b of the first engaging portion 25 of the second rotating member 2 to be fitted in the individual recessed portion 20c (1 $ Fig. 5). and so,
-10- 200524372 (8) 與突起2 ] c的數目與相角可以依據裝備-例如，行動電話 卜的規格適當調整。 此外，第二轉動構件2 1附近的第三轉動構件22的構 造是與輸出軸I 8 —起轉動。輸出軸1 8設定在此第三轉動 構件2 2的中心孔2 2 e中，且一用於防止轉動的銷2 3在直 徑方向被驅動進入輸出軸】8。然後，此銷2 3放入第三轉 動構件2 2的隙縫2 2 a，使第三轉動構件2 2與輸出軸]8 一起轉動。第三轉動構件2 2經由第二凹凸嚙合部分b， 耦合至第二轉動構件2 1中的第二嚙合部分2 6。 例如，相角爲I 8 0 °的梯形剖面的二凹部2 2 c形成在 第三轉動構件22的對立表面22b中，且相角爲180。的梯 形剖面的二突起26c形成在第二轉動構件2 ][的第二嚙合 部分2 6的對立表面2 6 d中’以裝配在個別凹部2 2 c中（ 比較圖5 )。所以，第二凹凸嚙合部分B由凹部22c與突 起26c合作建立。當第三轉動構件22在第二轉動構件21 保持停止的狀態前後轉動時，在任一轉動的每1 8 0 °達成 凹凸嚙合。凹部22c與突起26c的數目與相角可以依據裝 備-例如，行動電話1-的規格適當調整。 此外，此裝置]〇構成由壓縮彈簧組成的偏壓裝置3 0 ，用於在前述第一與第二嚙合部分A、B產生支持力。此 偏壓裝置3 0位於設在第二轉動構件2 1中的第一嚙合部分 2 5與設在第二轉動構件2 1中的第二嚙合部分2 6之間， 且可壓迫第一嚙合部分2 5頂住第一轉動構件2 0，及壓迫 第二嚙合部分2 6頂住第三轉動構件2 2。然後，第三轉動 > 11 - 200524372 (9) 構件2 2的支持在輸出軸1 8上是由裝配在輸出軸]8 後C彈簧3 4達成，且第一轉動構件2 0的支持在_ 18上是由裝配在輸出軸18上的前C彈簧36達成。 此外，偏壓裝置3 0由容納在圓柱形第二轉動構 中的第一壓縮彈簧3 1與第二彈簧3 2組成。第一壓縮 3 1的位置是纏繞在第一嚙合部分2 5與第二嚙合部： 之間的輸出軸1 8周圍，且第一壓縮彈簧3 1的一端接 -一嚙合部分2 5，另一端接觸第二嚙合部分2 6的底 2 6 c。此第一壓縮彈簧3 1在輸出軸1 8的衝動方向（ )偏壓第一嚙合部分2 5朝向第一轉動構件2 0，且在 方向偏壓第二嚙合部分2 6朝向第三轉動構件2 2。結 在第二轉動構件2 1中，第一嚙合部分2 5被壓迫頂住 轉動構件2 0，而第二嚙合部分2 6被壓迫頂住第三轉 件22。 第二壓縮彈簧3 2位於第一壓縮彈簧3 1內部，以 第一嚙合部分2 5與第二嚙合部分2 6之間的輸出軸 且第二壓縮彈簧32的一端接觸第一嚙合部分25，另 接觸裝配在輸出軸]8上的C環組成的彈簧座3 3。在 造中，第二壓縮彈簧3 2在衝動方向（軸向）只壓迫 嚙合部分2 5朝向第一轉動構件2 0，以添加助力至第 凸嚙合部分A中的第一壓縮彈簧3 ]的彈簧力。 當偏壓裝置3 0如同此構造由第一壓縮彈簧3 I與 壓縮彈簧3 2組成時，二彈簧的力施加在第一凹凸嚙 分A，且一彈簧的力施加在第二凹凸嚙合部分b。因 上的 Ϊ出軸 件21 ί彈簧 分26 觸第 表面 軸向 衝動 果， 第一 動構 環繞 18， 一端 此構 第一 一凹 第二 合部 此， -12 - 200524372 (10) 在第二凹凸嚙合部分B的支持力可比在第一凹凸嚙合部分 A的支持力弱，於是，於是變成可以提升人工轉動蓋部分 4的力，即，所謂人工轉動力，且使馬達啓動時的扭矩保 持爲小。此構造在行動電話、個人電腦等的蓋部分的開啓 /關閉是有效的。 此外，電鉸鏈裝置10具有一用於達成蓋部分4的人 工開啓/關閉的鎖定裝置40，且此鎖定裝置40在馬達！】 停止期間鎖定第二轉動構件2 1，但是在馬達1 1驅動期間 解除鎖定第二轉動構件2 1。此鎖定裝置40具有一碟形止 動構件4 2，用於第二轉動構件2 1的鎖定與解除鎖定，且 此止動構件4 2位於第三轉動構件2 2附近，且配置成爲 沿著設在中心孔4 2 e中的輸出軸1 8，在衝動方向滑動。 此外，止動構件4 2具有一體形成的爪部分4 2 a.，其 在衝動方向，自周緣的一部分朝第二轉動構件2〗突起（ 比較圖4 )。與它對應，二袋部分2 6 a -供爪部分4 2 a在衝 動方向放入其中-形成在弟一轉動構件2 1的第二嚙合部分 2 6之周緣部分的部分區域中，且成對的袋部分2 6 a相對 於突起26c配置成90。的相角。爪部分42a在第二轉動構 件2 1每轉動1 8 時掉入袋部分2 6 a。當爪部分4 2 a .掉入 袋部分2 6 a時’第二轉動構件2 1被鎖定。當爪部分4 2 a 離開袋部分2 6 a時，第二轉動構件2 ]被解除鎖定。 爲了適當引起鎖定與解除鎖定，一當作偏壓裝置的壓 縮彈簧4 3位在止動構件4 2與齒輪機構]4之間。此壓縮 彈簧43的一端接觸止動構件ο側，另—端接觸齒輪機構 -13- 200524372 (11) 1 4側，因而止動構件4 2被偏壓朝向第二轉動構件2 1 °此 外，爲了在衝動方向引起解除鎖定，一解除鎖定凸輪部分 4 4-在衝動方向突起朝向止動構件42，以構成端面凸輪·設 在第三轉動構件2 2的周緣部分的部分區域中。對應於它 ，一在衝動方向突起的山形突起（從動器）4 6設在止動 構件42的部分區域中，以與凸輪部分44合作，移動止動 構件42向後（比較圖4 )。因此，當凸輪部分44推動突 起46時，止動構件42可以抗拒壓縮彈簧43的偏壓力， 在衝動方向向後移動。 爲了確實引導止動構件42在衝動方向的前後運動， 延伸於衝動方向的引導條4 7經由托架4 7 a固定至齒輪外 罩]6的遠端。引導條47插入形成在止動構件42周緣區 域的部分區域中的切除部4 9，以達成防止止動構件4 2的 轉動。 將根據以上的結構，簡略說明電鉸鏈裝置1 〇的操作 如下。 首先’在行動電話1的蓋部分4由一手電動開啓的狀 況’使用者啓動設在主要本體2的側面上的蓋開啓/關閉 開關（未顯示），以引動馬達1 1。然後，第三轉動構件 2 2開始隨著輸出軸1 8的向前轉動而向前轉動，且解除鎖 定凸輪部分44與第三轉動構件22 —起連同輸出軸I 8的 轉動而自初始位置轉動90 ° (比較圖2 )。這時候，凸輪 部分44抗拒彈簧43的偏壓力，推動止動構件42的突起 4 6，以在衝動方向移動止動構件4 2的爪部分4 2 a向後（ -14- 200524372 (12) 比較圖6 )。結果，爪部分4 2 a離開設在第二嚙合部分2 6 中的袋部分2 6 a以達成解除鎖定，以致於第二轉動構件 2 1進入可自由轉動的狀態。這時候，在第二凹凸嚙合部 分B中，突起2 6 c裝配在凹部2 2 c中，以致於第二轉動構 件2 1藉由預定的嚙合力而轉動，以跟隨第三轉動構件22 〇 -旦第二轉動構件2 1開始轉動，袋部分2 6 a也在轉 動方向移動。所以，在止動構件2變成不受凸輪部分44 影響以後，爪部分42a由偏壓力保持接觸第二轉動構件 21，不會掉入袋部分26a。 因爲第一轉動構件2 0由第一壓縮彈簧3 1與第二壓縮 彈簧3 2相對於第二轉動構件2 1中的第一嚙合部分2 5而 在凹凸嚙合部分A維持凹凸嚙合支持狀態，第一轉動構 件2 0轉動，以跟隨第二轉動構件2 1，且蓋部分4轉動， 以跟隨第一轉動構件20的轉動。在鎖定狀態依此方式釋 放以後’輸出軸1 8的轉動力自第三轉動構件2 2循序傳送 到第一轉動構件2 〇，以啓動蓋部分4的開啓操作。在蓋 部分4完全開啓的狀態，爪部分4 2 a裝配在袋部分2 6 a中 的時刻是藉由未顯示的光感測器偵測而決定，以自動停止 馬達1 1的驅動。 做一對比，在蓋部分4由一手電動關閉的狀況，使用 者啓動設在主要本體2的側面上的蓋開啓/關閉開關（未 顯示）’以引動馬達1 1。然後，輸出軸1 8開始向後轉動 ’使第三轉動構件2 2開始向後轉動。然後，爪部分4 2 a -15 - 200524372 (13) 藉由凸輪部分44與突起46之間的合作，離開袋部分26a 。一旦鎖定狀態釋放，輸出軸1 8的轉動力自第三轉動構 件22循序傳送到第一轉動構件20，以啓動蓋部分4的關 閉操作。在蓋部分4完全關閉的狀態，爪部分42a裝配在 袋部分2 6 a中的時刻是藉由未顯示的光感測器偵測而決定 ，以自動停止馬達Π的驅動。 在使用者於蓋部分4電動開啓/關閉的中途強迫停止 開啓/關閉操作的狀態，第三轉動構件22在支持力比第一 凹凸嚙合部分A弱的第二凹凸嚙合部分B開始空轉。結 果，輸出軸1 8開始空轉，以致於無多餘的負載施加至齒 輪機構1 4，於是避免損害齒輪機構1 4中的齒輪系。 在蓋部分4人工開啓/關閉的狀況，馬達1 1維持在關 閉狀態，且爪部分42a裝配在袋部分26a中，以達成鎖定 。所以，第二轉動構件2 1保持停止。在蓋部分4人工開 啓/關閉時，凹凸嚙合部分A的嚙合於是釋放，以致於蓋 部分4可以由手自由開啓或關閉。在蓋部分4完全開啓或 關閉時，突起2 I c由於偏壓裝置3 0的偏壓力而被拉入凹 部2 0 c ’其在蓋部分4的最大開啓位置提供適當的點按感 。如上述，前述電鉸鏈裝置1 0涉及適當考慮到二種開啓 與關閉操作，包括蓋部分4的人工開啓/關閉與電動開啓/ 關閉，且利用齒輪機構I 4彌補微型馬達1 1的扭矩的短缺 ，於是在促進微型化方面非常有效。 注意，本發明絕不企圖受限於以上的實施例。例如， 如圖7所示，也可以在第一凹凸嚙合部分A採用拱形剖 -16- 200524372 (14) 面的凹部5 0 c與半圓形剖面的突起5 1 c。類似地，也可以 在第二凹凸嚙合部分B採用拱形剖面的凹部5 2 c與半圓形 剖面的突起5 3 c。 【圖式簡單說明】 參考附圖，更容易說明本發明，其中： 圖1是前視圖，顯示將應用依據本發明的電動鉸鏈裝 置的掀開式行動電話； 圖2是剖視圖，顯示依據本發明的電動鉸鏈裝置的第 一實施例； 圖3是依據本發明的電動鉸鏈裝置的爆炸透視圖； 圖4是透視圖，顯示止動構件與第三轉動構件； 圖5是第一與第二凹凸嚙合部分的放大剖視圖； 圖6是放大剖視圖，顯示第三轉動構件自圖2的初始 位置轉動90°以後的狀態·，且 圖7是放大剖視圖，顯示第一與第二凹凸嚙合部分的 另一例。 【主要元件符號說明】 1 行動電話 2 主要本體 3 液晶螢光幕 4 蓋部分（可移動物件） -17- 200524372 (15) 4b 輪 5 控 10 電 ]1 微 12 馬 13 驅 14 齒 16 齒 17 托 18 輸 20 第 20a 栓 20b 對 20c 凹 20e 中 2 1 第 2 1b 對 2 1c. 突 2 1 e 中 22 第 22a 隙 22b 對 22c 凹 22e 中 轂部分 制按鈕 鉸鏈裝置 型馬達 達外罩（桶） 動軸 輪機構 輪外罩 架 出軸 一轉動構件 槽部分 立表面 部 心孔 二轉動構件 立表面 起 心孔 三轉動構件 縫 立表面 部 心孔 - 18 - 200524372 (16) 23 銷 25 第 一 嚙 合 部 分 25a 引 導 突 起 26 第 二 嚙 合 部 分 26a 袋 部 分 26b 引 導 溝 槽 26c 突 起 26d 對 — 表 面 30 偏 壓 裝 置 3 1 第 一 壓 縮 彈 簧 32 第 — 彈 簧 3 3 彈 簧 座 34 後 C 彈 簧 3 6 .w一 刖 C 彈 簧 40 鎖 定 裝 置 42 止 動 構 件 42a 爪 部 分 42e 中 心 孔 43 壓 縮 彈 簧 44 凸 輪 部 分 46 突 起 ( 4从 動 αα \ 窃） 4 7 引 導 條 47a 托 架 49 切 除 部 -19 200524372-10- 200524372 (8) and the number of protrusions 2] c and the phase angle can be adjusted appropriately according to the specifications of the equipment-for example, a mobile phone. In addition, the third rotating member 22 in the vicinity of the second rotating member 21 is configured to rotate together with the output shaft I 8. The output shaft 18 is set in the center hole 2 2e of this third rotating member 22, and a pin 23 for preventing rotation is driven into the output shaft in the diameter direction]. Then, the pin 2 3 is inserted into the slot 2 2 a of the third rotating member 22, and the third rotating member 22 is rotated together with the output shaft] 8. The third rotating member 22 is coupled to the second engaging portion 26 of the second rotating member 21 via the second uneven engaging portion b. For example, a two-concave portion 2 2 c of a trapezoidal cross-section having a phase angle of 180 ° is formed in the opposite surface 22b of the third rotating member 22, and the phase angle is 180. The two protrusions 26c of the trapezoidal cross-section are formed in the opposite surface 2 6 d of the second engaging portion 2 6 of the second rotating member 2] [to fit in the individual recesses 2 2 c (compare Fig. 5). Therefore, the second concave-convex engaging portion B is established by cooperation of the concave portion 22c and the protrusion 26c. When the third rotating member 22 rotates back and forth while the second rotating member 21 remains stopped, the concave-convex engagement is achieved every 180 ° of any rotation. The number and phase angle of the recesses 22c and the protrusions 26c can be appropriately adjusted according to the specifications of the device-for example, the mobile phone 1-. In addition, this device] 0 constitutes a biasing device 30 composed of a compression spring for generating a supporting force at the aforementioned first and second meshing portions A, B. This biasing device 30 is located between the first engaging portion 25 provided in the second rotating member 21 and the second engaging portion 26 provided in the second rotating member 21, and can press the first engaging portion 2 5 is pressed against the first rotating member 20, and the second engaging portion 26 is pressed against the third rotating member 22. Then, the third rotation> 11-200524372 (9) The support of the member 2 2 on the output shaft 18 is achieved by the C spring 3 4 and the support of the first rotation member 20 is at _ 18 is achieved by a front C spring 36 fitted on the output shaft 18. In addition, the biasing means 30 is composed of a first compression spring 31 and a second spring 32 which are housed in a cylindrical second rotating structure. The position of the first compression 31 is wound around the output shaft 18 between the first meshing portion 25 and the second meshing portion :, and one end of the first compression spring 31 is connected to a meshing portion 25 and the other end The bottom 2 6 c of the second engaging portion 26 is contacted. This first compression spring 31 biases the first engaging portion 25 toward the first rotating member 20 in the impulse direction () of the output shaft 18 and biases the second engaging portion 26 toward the third rotating member 2 in the direction. 2. In the second rotating member 21, the first engaging portion 25 is pressed against the rotating member 20, and the second engaging portion 26 is pressed against the third rotating member 22. The second compression spring 32 is located inside the first compression spring 31, with the output shaft between the first engagement portion 25 and the second engagement portion 26, and one end of the second compression spring 32 contacts the first engagement portion 25, and the other Contact the spring seat 3 3 composed of the C ring assembled on the output shaft] 8. In manufacturing, the second compression spring 32 only presses the engaging portion 25 toward the first rotating member 20 in the impulse direction (axial direction) to add a boost force to the spring of the first compression spring 3 in the convex engaging portion A]. force. When the biasing device 3 0 is composed of the first compression spring 3 I and the compression spring 32 as described above, the force of the two springs is applied to the first concave and convex part A, and the force of the one spring is applied to the second concave and convex engagement part b . Because the shaft member 21 on the upper part of the spring 21 touches the first surface axially, the first moving structure surrounds 18, and the one end of the structure is first and the second concave part. -12-200524372 (10) in the second The supporting force of the concave-convex engaging portion B may be weaker than the supporting force of the first concave-convex engaging portion A, so that it becomes a force that can raise the manual turning cover portion 4, that is, the so-called artificial turning force, and keeps the torque when the motor starts small. This structure is effective for opening / closing a cover portion of a mobile phone, a personal computer, and the like. In addition, the electric hinge device 10 has a locking device 40 for manually opening / closing the lid portion 4, and this locking device 40 is on the motor! ] The second rotating member 21 is locked during stopping, but the second rotating member 21 is unlocked during driving of the motor 11. The locking device 40 has a dish-shaped stopper member 42 for locking and unlocking the second rotating member 21, and the stopper member 42 is located near the third rotating member 22 and is arranged along the device. The output shaft 18 in the center hole 4 2 e slides in the impulse direction. In addition, the stopper member 42 has an integrally formed claw portion 4 2 a. Which protrudes from a part of the peripheral edge toward the second rotating member 2 in the direction of the impulse (cf. FIG. 4). Corresponding to it, the two-bag portion 2 6 a-the pawl portion 4 2 a is placed therein in an impulse direction-formed in a partial area of the peripheral portion of the second engaging portion 26 of the brother-rotating member 21 and paired The bag portion 2 6 a is arranged at 90 with respect to the protrusion 26 c. Phase angle. The claw portion 42a falls into the bag portion 2 6 a every time the second rotating member 21 is rotated 18. When the claw portion 4 2 a. Falls into the bag portion 2 6 a ', the second rotation member 21 is locked. When the claw portion 4 2 a leaves the bag portion 2 6 a, the second rotating member 2] is unlocked. In order to properly cause locking and unlocking, a compression spring 43 serving as a biasing means is positioned between the stopper member 42 and the gear mechanism] 4. One end of the compression spring 43 contacts the side of the stopper member, and the other end contacts the side of the gear mechanism. 13-200524372 (11) 1 4 side, so the stopper member 4 2 is biased toward the second rotating member 2 1 ° The unlocking is caused in the impulsive direction, and an unlocking cam portion 44 is projected toward the stopper member 42 in the impulsive direction to constitute an end cam provided in a partial region of the peripheral portion of the third rotating member 22. Corresponding to it, a mountain-shaped protrusion (slave) 46 protruding in the impulse direction is provided in a partial area of the stopper member 42 to cooperate with the cam portion 44 to move the stopper member 42 backward (compare FIG. 4). Therefore, when the cam portion 44 pushes the protrusion 46, the stopper member 42 can resist the biasing force of the compression spring 43 and move backward in the impulse direction. In order to surely guide the stopper member 42 to move forward and backward in the impulse direction, a guide bar 47 extending in the impulse direction is fixed to the distal end of the gear housing 6 via a bracket 4 7a. The guide bar 47 is inserted into the cut-out portion 49 formed in a partial area of the peripheral region of the stopper member 42 to prevent the stopper member 42 from rotating. Based on the above structure, the operation of the electric hinge device 10 will be briefly described as follows. First, "in a state where the cover portion 4 of the mobile phone 1 is electrically opened by one hand," the user activates a cover opening / closing switch (not shown) provided on the side of the main body 2 to activate the motor 11. Then, the third rotation member 22 starts to rotate forward with the forward rotation of the output shaft 18, and the unlocking cam portion 44 and the third rotation member 22 together with the rotation of the output shaft I 8 rotate from the initial position. 90 ° (compare figure 2). At this time, the cam portion 44 resists the biasing force of the spring 43 and pushes the protrusion 46 of the stop member 42 to move the claw portion 4 2 a of the stop member 42 in the impulse direction backward (-14- 200524372 (12) comparison diagram 6). As a result, the claw portion 4 2 a is separated from the bag portion 2 6 a provided in the second engaging portion 26 to achieve unlocking, so that the second rotating member 21 enters a freely rotatable state. At this time, in the second concave-convex engaging portion B, the protrusion 2 6 c is fitted in the recessed portion 2 2 c so that the second rotating member 21 is rotated by a predetermined engaging force to follow the third rotating member 22 〇- Once the second rotation member 21 starts to rotate, the bag portion 2 6 a also moves in the rotation direction. Therefore, after the stopper member 2 becomes unaffected by the cam portion 44, the claw portion 42a is kept in contact with the second rotating member 21 by the biasing force, and does not fall into the bag portion 26a. Since the first rotating member 20 is maintained in the concave-convex meshing support state at the concave-convex meshing portion A by the first compression spring 31 and the second compression spring 32 with respect to the first meshing portion 25 in the second rotating member 21, the first A rotating member 20 is rotated to follow the second rotating member 21, and the cover portion 4 is rotated to follow the rotation of the first rotating member 20. After the locked state is released in this way, the rotational force of the output shaft 18 is sequentially transmitted from the third rotating member 22 to the first rotating member 20 to start the opening operation of the cover portion 4. In the state where the lid portion 4 is fully opened, the moment when the claw portion 4 2 a is assembled in the bag portion 2 6 a is determined by detection of a light sensor not shown to automatically stop the driving of the motor 11. For comparison, in a situation where the cover portion 4 is electrically closed by one hand, the user activates a cover open / close switch (not shown) 'provided on the side of the main body 2 to activate the motor 11. Then, the output shaft 18 starts to rotate backward 'so that the third rotating member 22 starts to rotate backward. Then, the claw portion 4 2 a -15-200524372 (13) leaves the bag portion 26a by cooperation between the cam portion 44 and the protrusion 46. Once the locked state is released, the rotation force of the output shaft 18 is sequentially transmitted from the third rotation member 22 to the first rotation member 20 to start the closing operation of the cover portion 4. In the state where the cover portion 4 is completely closed, the moment when the claw portion 42a is assembled in the bag portion 26a is determined by detection of a light sensor not shown to automatically stop the driving of the motor Π. In a state where the user forcibly stops the opening / closing operation in the middle of the electric opening / closing of the lid portion 4, the third rotating member 22 starts idling at the second concave-convex engagement portion B having a weaker supporting force than the first concave-convex engagement portion A. As a result, the output shaft 18 starts to idle so that no unnecessary load is applied to the gear mechanism 14 and the damage to the gear train in the gear mechanism 14 is avoided. In the state where the cover portion 4 is manually opened / closed, the motor 11 is maintained in the closed state, and the claw portion 42a is fitted in the bag portion 26a to achieve the lock. Therefore, the second rotating member 21 is kept stopped. When the cover portion 4 is manually opened / closed, the engagement of the concave-convex engagement portion A is then released, so that the cover portion 4 can be freely opened or closed by hand. When the lid portion 4 is fully opened or closed, the protrusion 2 I c is pulled into the recess portion 20 c ′ due to the biasing force of the biasing device 30, which provides a proper click feeling at the maximum opened position of the lid portion 4. As mentioned above, the aforementioned electric hinge device 10 involves properly considering two kinds of opening and closing operations, including manual opening / closing and electric opening / closing of the cover portion 4, and using the gear mechanism I 4 to make up for the shortage of torque of the micro motor 11 , So very effective in promoting miniaturization. Note that the present invention is by no means intended to be limited to the above embodiments. For example, as shown in FIG. 7, the first concave-convex meshing portion A may be a concave portion 5 0 c of a -16-200524372 (14) plane and a protrusion 5 1 c of a semicircular cross-section. Similarly, a concave portion 5 2 c having an arcuate cross-section and a protrusion 5 3 c having a semi-circular cross-section can be used in the second concave-convex engaging portion B. [Brief description of the drawings] The present invention is more easily explained with reference to the drawings, wherein: FIG. 1 is a front view showing a flip-type mobile phone to which the electric hinge device according to the present invention is applied; FIG. 2 is a sectional view showing the mobile phone according to the present invention The first embodiment of the electric hinge device according to the present invention; FIG. 3 is an exploded perspective view of the electric hinge device according to the present invention; FIG. 4 is a perspective view showing a stopper member and a third rotating member; Enlarged cross-sectional view of the engaging portion; FIG. 6 is an enlarged cross-sectional view showing a state after the third rotating member is rotated 90 ° from the initial position in FIG. 2, and FIG. 7 is an enlarged cross-sectional view showing another example of the first and second concave-convex engaging portions . [Description of main component symbols] 1 Mobile phone 2 Main body 3 LCD screen 4 Cover (movable object) -17- 200524372 (15) 4b Wheel 5 Control 10 Electric] 1 Micro 12 Horse 13 Drive 14 Tooth 16 Tooth 17 Support 18 lose 20 No. 20a Bolt 20b to 20c Concave 20e 2 1 2nd 2 1b to 2 1c. Project 2 1 e Middle 22 22a Gap 22b to 22c Concave 22e Central hub part button hinge type motor up to cover (barrel) Rotating shaft wheel mechanism, wheel cover, shaft exit, rotating member slot portion, center hole on the vertical surface portion, rotating member standing surface, center hole, three rotating member, sewing surface portion center hole,-18-200524372 (16) 23 pin 25 first engaging portion 25a guide projection 26 second engaging portion 26a pocket portion 26b guide groove 26c projection 26d opposite-surface 30 biasing device 3 1 first compression spring 32 first-spring 3 3 spring seat 34 rear C spring 3 6 .w 1 刖 C Spring 40 Locking device 42 Stopper 42a Claw portion 42e Center hole 43 Compression spring Spring 44 Convex part 46 Protrusion (4 driven αα \ steal) 4 7 Guide bar 47a Bracket 49 Cut-out part -19 200524372
(17) 50c 凹 部 5 1c 突 起 52c 凹 部 53c 突 起 A 第 一 凹 凸 嚙 合 部 分 B 第 二 凹 凸 嚙 合 部 分 S 鉸 鏈 部 分 -20-(17) 50c recessed part 5 1c protruding 52c recessed part 53c protruding A first concave convex engaging part B second concave convex engaging part S hinge part -20-