1330681 九、發明說明 【發明所屬之技術領域】 本發明是關於門之隱藏式鉸鏈，特別是關於當打開門 時’可自動地復原成關閉狀態之附有自動封閉功能之隱藏 式鉸鏈。 【先前技術】 隱藏式鉸鏈是設定成：在關閉著門之狀態，由外部無 法看見的狀態者。即，該鉸鏈是具有安裝於門側與門框側 ，成對之連桿機構，兩連桿機構（劃定門的旋轉中心軸線 )做成藉由共通的旋轉銷連接之結構，在關閉門之狀態， 這些連桿機構分別被收納於門及門框的相互鄰接之端面的 凹部內（專利文獻1及2 )。 〔專利文獻1〕日本平2-240384號公報 〔專利文獻2〕日本平6-288139號公報 【發明內容】 〔發明所欲解決之課題〕 在這種的鉸鏈，上述共通的旋轉銷旋轉支承於一端被 旋轉支承於各連桿機構之固定位置的旋轉銷的連桿之另一 端，在進行門的開閉時，使其移動於門框側連桿機構之上 述固定位置的旋轉銷之周圍的圓弧上。 一般在非隱藏式鉸鏈之通常的鉸鏈所使用的自動封閉 裝置，是在一對筒狀構件的內部具有螺旋彈簧，藉由伴隨 -5- 1330681 打開門，在該筒狀構件之間產生相對的轉動，使得在螺旋 彈簧產生復原力，藉此門被自動地關閉。該一對筒狀構件 做成：對於設定於門及門框之鄰接的端面之外側位置的門 的旋轉中心軸件線，呈同軸狀。 在欲將自動封閉裝置設定於如上所述的隱藏式鉸鏈之 情況時，該自動封閉裝置是形成沿著位於上述連桿機構間 之共通的旋轉銷之軸線設置，但由於該自動封閉裝置具備 直徑比起共通的旋轉銷相當大的筒狀構件，故在進行門的 開閉之際，會對門框造成干涉，容易變成開閉動作之障礙 。爲了解決此問題，必須增大該鉸鏈的尺寸，一般不進行 自動封閉裝置對隱藏式鉸鏈之安裝。 本發明是有鑒於這樣的問題點而開發完成之發明，其 目的在於提供附有自動封閉功能之隱藏式鉸鏈。 〔用以解決課題之手段〕 即’本發明是提供一種附有自動封閉功能之隱藏式鉸 鏈，其特徵爲： 具有： 第1及第2轉動構件（14、16)，其是做成在同一的 軸線（在以下所述的實施形態，以符號1 2a顯示）之周圍 可相互地轉動； 一對第1連桿（18、20)，其是以包含該軸線（12a )的假想中心平面爲中心，相互面對稱地設置於該第1及 第2轉動構件（14、1 6 ); -6 - 1330681 —對滑件（26、28 )，其是旋轉連接於該第1連桿（ 18' 20 )； —對支承體（30、32)，其是可滑動地卡合於該滑件 (26、28)，藉由對該滑件相互地滑動，來對於旋轉連接 著該滑件之該第1連桿（18、20)相互地接近或分離，又 ’該支承體的其中一方固定於門，而另一方固定於門框； 一對第2連桿（22、24 )，其是以該假想中心平面爲 中心’以相互面對稱的方式設置於該第1及第2轉動構件 ，對於分別設有第2連桿之第1及第2轉動構件的第1連 桿，設置於該假想中心平面的相反側之位置； 復原構件’其是產生下述作用：藉由該第1及第2轉 動構件（14、16)以朝從該一對第1連桿（18、20)接近 該假想中心平面的位置（圖1)分離的方向移動的方式， 在該軸線（12a)的周圍相對地轉動，來產生復原力，以 使該第1及第2轉動構件（14、16)返回至原來的位置； 以及 一對凸輪機構（34、36) ’其是對應各第2連桿而設 置的，當該第1及第2轉動構件（14、16)以朝從該一對 第1連桿（18、20)接近該假想中心平面的位置分離的方 向移動的方式（圖1)，在該軸線（12a)的周圍相對地轉 動時，各第2連桿（22、24)使旋轉連接於該第1連桿（ 18、20)之該滑件（28、26) ’對滑動卡合有該滑件的（ 32、30)，在旋轉連接於該滑件的該第1連桿（18、2〇) 從該支承體分離的方向上滑動，其中該第1連桿是設置於 1330681 未設有該各第2連桿側之該轉動構件（1 6、1 4 )。 在此鉸鏈，爲將支承體設定於形成在門及支承該門 門框之鄰接的端面之凹部內而加以使用者，伴隨將門打 ’支承第1及第2轉動構件（相當於收納前述螺旋彈簧 一對筒狀構件）之滑件由支承體（因此收納其之門或門 )突出’第1及第2轉動構件藉由該滑件的動作，對門 門框一邊朝外側移位一邊轉動，變得不易產生與門或門 之干涉者。 各凸輪機構，具體而言是具有：設置於各第2連桿 從動元件（？9、？10);及設置於各支承體（30、32) 當該第1及第2轉動構件14、16相對地轉動時，藉由 第2連桿之該從動元件（P9、P10)進行滑動卡合之凸 輪廓曲線部（44、46)， 各第2連桿（22、24 )是旋轉連接於該滑件（28、 )，該滑件被旋轉連接於設置在未設有該各第2連桿側 該轉動構件（16、14)之該第1連桿（20、18)，當設 於該第2連桿之從動元件（P9、P10)沿著該凸輪輪廓 線部被移動時，使該滑件（28、26 )對該支承體（30、 )相對地滑動。 又，各凸輪機構亦可具有： 第3連桿（38、40)，其是具備旋轉連接於第2連 (22、24)的第1端、及旋轉連接於該支承體的第2端 凸輪手段（34、36)，其是將該第3連桿（38、40 與該滑件（28、26)連接，當該第1及第2轉動構件（ 的 開 的 框 或 框 之 該 輪 26 的 置 曲 3 2 桿 ♦ ) -8- 14 1330681 、10)以朝從該一對第1連桿（18、20)接近該假想中心 平面的位置分離的方向移動的方式來在該軸線（l2a)的 周圍相互地轉動時’使該滑件（28、26)，在該第1連桿 (18、20)從該支承體（3〇、32)分離之方向上移位。 更具體而言’各凸輪手段具備有滑動卡合於該滑件（ 28、26)且藉由該第3連桿（38、40)的動作加以移動之 凸輪構件（34、36) ’該凸輪構件（34、36)將該第3連 桿（38、40)的前述動作變換成該滑件（28、26)的前述 動作。 做爲在此情況之一個實施形態，該凸輪構件（3 4、3 6 )被做成：以該第3連桿（38、40)之與該支承體（32、 30)旋轉連接的旋轉軸線爲中心，與該第3連桿（38、40 )一同地轉動之偏心圓盤， 該滑件（28、26 )具有：可滑動地卡合於該偏心圓盤 的周緣，將該偏心圓盤的轉動變換成該滑件在該支承體上 之滑動的凸輪從動壁（26a、26b、28a、28b)。 〔發明效果〕 在本發明的附有自動封閉功能之隱藏式鉸鏈，因當打 開門時，第1及第2轉動構件朝由門或門框向外側分離的 方向移位，所以可做成不易產生對門或門框之干涉’能夠 設定於與以往相同之端面尺寸的門或門框。 【實施方式】 -9- 1330681 以下，根據圖面說明本發明的附 藏式鉸鏈。 圖1至圖4是由門的上端側觀看 之間的本發明的附有自動封閉功能之 ’圖5爲位於圖4的狀態之附有自動 鏈1 〇的左側面圖。 該鉸鏈10是具有自動封閉裝置 12如圖5所示’具有：做成同軸狀， 第2轉動構件14、16;及設置於該筒 該筒狀構件的相對轉動，以產生復原 示）。因這種的自動封閉裝置爲眾所 體結構之說明。 在第1及第2轉動構件14、16 18、20，該一對第1連桿是以包含其 中心平面（在圖1’通過旋轉中心軸 )爲中心’由該第1及第2筒狀構件 延伸’又，從該第1及第2筒狀構件 想中心平面，由與設置於第1及第2 1 8、2 0相反側的位置，相互面對稱地 22 ' 24 〇 在各第1連桿18、20，滑件26、 P2被旋轉連接著。該滑件26、28是 固定於凹部之支承體30、32(在圖1 ’各支承體30、32如圖2至圖4所 有自動封閉功能之隱 安裝於門D及門框F 隱藏式鉸鏈10之圖 封閉功能之隱藏式鉸 12。該自動封閉裝置 於上下重疊之第1、 狀構件的內部，伴隨 力之螺旋彈簧（未圖 皆知，所以省略其具 ，設有一對第1連桿 旋轉中心軸線的假想 線朝下方延伸之平面 朝左右相互面對稱地 ，設有：對於上述假 筒狀構件之第1連桿 延伸之一對第2連桿 28藉由旋轉銷P1、 可滑動地安裝於設定 觀看爲在左右方向） 示，對於旋轉連接著 -10- 1330681 地 端 旋 固 轉 圓 側 地 旋 28 看 裝 成 的 有 成 作 被 各自所支承的滑件2 6、2 8之第1連桿1 8、2 0，可相對 接近或分離。上述凹部是形成於門或門框的相互鄰接之 面。 在第2連桿22、24，第3連桿38、40的一端藉由 轉銷Ρ3、Ρ4旋轉連接著，該第3連桿38、40的另一端 定於：在支承體30、32的圖示位置，做成可旋轉之旋 銷Ρ5、Ρ6。即，第3連桿38、40是對於支承體32、30 以旋轉銷Ρ5、Ρ6爲中心可進行旋轉。 在該旋轉銷Ρ5、Ρ6，固定有做爲凸輪構件之偏心 盤34、36，該偏心圓盤是被位於在圖1觀看時之左右兩 的滑件 28、26之壁（面）28a、28b、26a、26b可滑動 夾持，當偏心圓盤34、36與第3連桿38、40 —同地以 轉銷P5、P6的旋轉中心軸線爲中心進行轉動時，滑件 、26藉由該偏心圓盤34、36的旋轉，分別朝在圖1觀 時之左方及右方移位。 以上所說明的連桿機構是如圖5所示，在自動封閉 置12的上下，設置相同者。又，滑件26、28其全體作 長方體狀，如圖5所示，由具備夾持偏心圓盤34、36 面26a、26b、28a、28b之部分；及重疊於該部分，具 公旋轉銷P5、P6通過之細長的孔26c、28c之部分所構 的。 其次，說明關於附有自動封閉功能之隱藏式鉸鏈之 用。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concealed hinge of a door, and more particularly to a concealed hinge with an automatic closing function that can be automatically restored to a closed state when the door is opened. [Prior Art] The concealed hinge is set to a state in which the door is closed and cannot be seen by the outside. That is, the hinge has a pair of link mechanisms mounted on the door side and the door frame side, and the two link mechanisms (the rotation center axis of the defined door) are connected by a common rotating pin, and the door is closed. In the state, the link mechanisms are housed in the recesses of the end faces of the door and the door frame adjacent to each other (Patent Documents 1 and 2). [Patent Document 1] Japanese Patent Publication No. Hei. 2-240384 (Patent Document 2) Japanese Patent Publication No. Hei 6-288139. SUMMARY OF THE INVENTION [Problems to be Solved by the Invention] In such a hinge, the common rotating pin is rotatably supported by The other end of the link of the rotation pin whose one end is rotatably supported at a fixed position of each link mechanism is moved to an arc around the rotation pin of the fixed position of the door frame side link mechanism when the door is opened and closed. on. The automatic closing device generally used in the conventional hinge of the non-hidden hinge has a coil spring inside the pair of cylindrical members, and the door is opened between the cylindrical members by the opening of the door with -5-1330681. Rotation causes a restoring force to be generated at the coil spring, whereby the door is automatically closed. The pair of tubular members are formed coaxially with respect to the rotation center shaft line of the door set to the outer side of the adjacent end faces of the door and the door frame. In the case where the automatic closing device is to be set in the concealed hinge as described above, the automatic closing device is formed along the axis of the common rotating pin located between the above-mentioned link mechanisms, but since the automatic closing device has a diameter Since the tubular member is relatively large compared to the common rotating pin, when the door is opened and closed, the door frame is interfered, and it becomes easy to become an obstacle to the opening and closing operation. In order to solve this problem, the size of the hinge must be increased, and the installation of the hidden hinge by the automatic closing device is generally not performed. The present invention has been developed in view of such problems, and an object thereof is to provide a concealed hinge with an automatic closing function. [Means for Solving the Problem] That is, the present invention provides a concealed hinge with an automatic closing function, comprising: first and second rotating members (14, 16) which are made in the same The axis (in the embodiment described below, indicated by the symbol 12a) is rotatable relative to each other; a pair of first links (18, 20) which are imaginary center planes including the axis (12a) Centers are symmetrically disposed on the first and second rotating members (14, 16); -6 - 1330681 - a pair of sliders (26, 28) rotatably coupled to the first link (18' 20); a pair of support bodies (30, 32) slidably engaged with the sliders (26, 28), by sliding the sliders relative to each other for rotating the sliders The first links (18, 20) are close to or separated from each other, and one of the supports is fixed to the door and the other is fixed to the door frame; a pair of second links (22, 24) are The imaginary center plane is centered on the first and second rotating members in a mutually symmetrical manner, and is provided with a second link The first link of the first and second rotating members is disposed at a position opposite to the virtual center plane; and the restoring member has the function of: the first and second rotating members (14, 16) A reciprocating force is generated by relatively rotating around the axis (12a) so as to move in a direction in which the pair of first links (18, 20) are separated from the virtual center plane (Fig. 1). The first and second rotating members (14, 16) are returned to the original position; and the pair of cam mechanisms (34, 36) are provided corresponding to the respective second links, and the first and the second The rotating member (14, 16) is moved in a direction separating from the position where the pair of first links (18, 20) approach the imaginary center plane (Fig. 1), and is relatively aligned around the axis (12a) When the ground rotates, each of the second links (22, 24) rotates the slider (28, 26) that is rotatably connected to the first link (18, 20) to slide the slider (32, 30) sliding in a direction in which the first link (18, 2〇) rotatably coupled to the slider is separated from the support body, wherein the first link is disposed at 13 30681 is not provided with the rotating members (16, 14) on the respective second link sides. In this hinge, the support body is placed in a recess formed in the door and the adjacent end surface of the door frame, and the user is supported by the door to support the first and second rotating members (corresponding to the storage of the coil spring). The slider of the tubular member protrudes from the support (and thus the door or the door). The first and second rotating members are rotated by the movement of the slider, and the door frame is displaced outward, which makes it difficult to rotate. Produce interference with the door or door. Specifically, each of the cam mechanisms includes: a second link follower element (?9, ?10); and each of the support bodies (30, 32), the first and second rotating members 14, When the 16 is relatively rotated, the cam profile (44, 46) is slidably engaged by the follower elements (P9, P10) of the second link, and each of the second links (22, 24) is a rotational connection. The slider (28, ) is rotatably connected to the first link (20, 18) provided on the rotating member (16, 14) on which the second link side is not provided. When the driven elements (P9, P10) of the second link are moved along the cam contour portion, the sliders (28, 26) slide the support members (30, 26) relatively. Further, each of the cam mechanisms may include: a third link (38, 40) having a first end rotatably coupled to the second link (22, 24) and a second end cam rotatably coupled to the support body Means (34, 36) for connecting the third link (38, 40) to the slider (28, 26), when the first and second rotating members (the open frame or the frame of the wheel 26) The crank 3 2 rod ♦ ) -8 - 14 1330681 , 10) is moved in the direction separating from the position where the pair of first links (18, 20) approach the imaginary center plane (l2a) When the surroundings are rotated relative to each other, the sliders (28, 26) are displaced in the direction in which the first links (18, 20) are separated from the support (3, 32). More specifically, each cam means includes a cam member (34, 36) that is slidably engaged with the slider (28, 26) and moved by the action of the third link (38, 40). The members (34, 36) convert the aforementioned operations of the third links (38, 40) into the aforementioned operations of the sliders (28, 26). In one embodiment of this case, the cam member (34, 36) is formed by a rotational axis of the third link (38, 40) rotatably coupled to the support (32, 30). Centered on the eccentric disk that rotates together with the third link (38, 40), the slider (28, 26) has a slidably engaged with a periphery of the eccentric disk, the eccentric disk The rotation is converted into a cam driven wall (26a, 26b, 28a, 28b) on which the slider slides on the support. [Effect of the Invention] In the concealed hinge with the automatic closing function of the present invention, when the door is opened, the first and second rotating members are displaced in the direction in which the door or the door frame is separated outward, so that it is difficult to produce The interference with the door or the door frame can be set to the same door size or door frame as the conventional one. [Embodiment] -9 - 1330681 Hereinafter, the attached hinge of the present invention will be described based on the drawings. Figs. 1 to 4 are views of the present invention with an automatic closing function between the upper end sides of the door. Fig. 5 is a left side view of the automatic chain 1 附 attached to the state of Fig. 4. The hinge 10 has an automatic closing device 12 as shown in Fig. 5, having a coaxial shape, second rotating members 14, 16 and relative rotations provided in the cylindrical member to produce a return. Because of this automatic closing device, the description of the structure is as follows. In the first and second rotating members 14, 16 18 and 20, the pair of first links are centered on the center plane (the center axis of rotation in Fig. 1') by the first and second cylinders. In the first and second cylindrical members, the center of the first and second cylindrical members is symmetrical with each other at a position opposite to the first and second sides 18, 24 The links 18, 20, the sliders 26, P2 are rotatably coupled. The sliders 26, 28 are support bodies 30, 32 fixed to the recesses (in FIG. 1 'each of the support bodies 30, 32, as shown in FIGS. 2 to 4, all of the automatic closing functions are hidden in the door D and the door frame F hidden hinge 10 The concealed hinge 12 of the closed function is provided. The self-closing device is disposed inside the first and first members which are vertically overlapped, and a coil spring with a force (not known, so the device is omitted, and a pair of first link rotations are provided. The imaginary line of the central axis extends symmetrically to the left and right, and is provided to be slidably mounted to the second link 28 by the rotation pin P1 for one of the first link extensions of the dummy tubular member The setting is viewed in the left-right direction. For the rotation connection of the -10- 1330681, the ground end is turned to the side of the ground, and the first one of the sliders 6 6 and 28 that are supported by each other is installed. The connecting rods 18, 20 can be relatively close to or separated from each other. The recesses are formed on the mutually adjacent faces of the door or the door frame. At the ends of the second links 22, 24, the third links 38, 40 are revolved. Ρ3, Ρ4 are rotatably connected, and the other ends of the third links 38, 40 are fixed Rotational turns Ρ5 and Ρ6 are formed at the positions of the supports 30 and 32. That is, the third links 38 and 40 are rotatable about the support bodies 32 and 30 around the rotary pins 5 and Ρ6. The eccentric discs 34 and 36 as cam members are fixed to the rotary pin 5 and the cymbal 6, and the eccentric disc is a wall (face) 28a of the sliders 28 and 26 located at the left and right when viewed in FIG. 28b, 26a, 26b are slidably clamped, and when the eccentric discs 34, 36 are rotated in the same manner as the third links 38, 40 with the rotation center axes of the rotation pins P5, P6, the sliders 26 are The rotation of the eccentric discs 34, 36 is shifted to the left and right of Fig. 1, respectively. The link mechanism described above is as shown in Fig. 5, and is disposed on the upper and lower sides of the automatic closing 12 Further, the sliders 26 and 28 have a rectangular parallelepiped shape as shown in Fig. 5, and are provided with a portion for holding the eccentric discs 34, 36, 26b, 26b, 28a, 28b; and overlapping the portion, having a common The rotation pins P5, P6 are formed by the portions of the elongated holes 26c, 28c. Next, the concealed hinge with the automatic closing function is explained. use.
圖1顯示處於關閉著門D之狀態，圖4顯示門D -11 - 1330681 轉動18°而打開後之狀態。 當將門D由圖1的狀態向圖4的狀態逐漸打開時，自 動封閉裝置12的筒狀構件14對於筒狀構件16在旋轉中 心軸線1 2a的周圍相對地開始轉動。藉此，門框側的第2 連桿22以旋轉中心軸線1 2a爲中心開始朝逆時鐘方向旋 轉’使得第3連桿38以可旋轉地安裝於支承體32的旋轉 銷P5爲中心進行轉動。因旋轉銷P5是固定於第3連桿 38 ’所以使得被固定於該旋轉銷P5之偏心圓盤34也相同 地在旋轉銷P5周圍朝逆時鐘方向轉動。 偏心圓盤34是設定成：當位於圖1的位置時，由旋 轉銷P5的旋轉中心軸線分離最遠之周緣由該旋轉中心軸 線（在圖1觀看），位於垂直上方之位置。因此，當該偏 心圓盤3 4朝逆時鐘方向轉動時，該偏心圓盤3 4將滑件2 8 的壁2 8 a朝左側按壓，使滑件2 8朝左側移位。因此，自 動封閉裝置12以旋轉銷P2爲中心進行轉動，並且由門框 F朝左側分離地移位。與此同時，相同的動作亦產生於門 D側的第1至第3連桿、滑件等。 如此’因自動封閉裝置12是在將門D打開之際，欲 由門D及門框F的端面分離地動作，所以即使爲如以往之 隱藏式鉸鏈，將旋轉銷PI、P2固定於門及門框之情況， 造成對門D或門框F產生干涉之結構者，也不會對這些門 及門框產生干涉，而能夠將門打開。 在圖4之打開的狀態’自動封閉裝置的螺旋彈簧蓄積 復原力，若將門開放的話’則以該復原力返回至圖1的狀 -12- 1330681 態。此時的連桿機構之動作是與上述呈相反。 在圖6至圖9，顯示本發明的附有自動封閉功能之隱 藏式鉸鏈的其他實施形態。此隱藏式鉸鏈之主要構成要素 與圖1至圖5所示者相同，因此對於相同要素賦予相同符 號加以顯示。 如圖所示，在此隱藏式鉸鏈42，設有設置於自動封閉 裝置12的第1及第2筒狀構件14、16之第1連桿18、20 及第2連桿22、24。在各第1連桿18、20，滑件26、28 藉由旋轉銷PI、P2被旋轉連接著。該滑件26、28可滑動 地安裝於支承體30、32(在圖6爲於左右方向），該支承 體設定固定於形成在門或門框的相互鄰接之端面的凹部》 在此隱藏式鉸鏈42，不具有第3連桿，呈在大致中央 部分被折彎之形狀的第2連桿22、24之前端藉由旋轉銷 P7、P8旋轉連接於滑件26、28。在第2連桿22、24的折 彎部分設有凸輪從動銷（凸輪從動元件）P9、P10，該凸 輪從動銷P9、P10與形成於支承體30、32的凸輪輪廓曲 線部（具體而言爲溝槽）44、46滑動卡合。 如圖6至圖9所示，當門D由圖6的關閉狀態逐漸打 開時，則凸輪從動銷P9、P10沿著凸輪輪廓曲線部44、 46移動，使得旋轉銷P7、P8在接近各第1連桿18、20 的方向移位，因此，滑件26、28移位成旋轉連接於這些 滑件的第1連桿18、20分別由支承體30、32突出。因此 ，與前述實施形態同樣地，自動封閉裝置12不會對門框 緣造成干涉，而可將門打開。 -13- 1330681 以上，顯示本發明的隱藏式鉸鏈之實施形態，但本發 明不限於這些實施形態。例如，自動封閉裝置1 2不限於 上述利用螺旋彈簧者，亦可使用例如利用流體之各種構件 【圖式簡單說明】 圖1是由上方觀看設定於門及門框之本發明的附有自 動封閉功能之隱藏式鉸鏈的第1實施形態之情況之槪念圖 ，顯示門被關著之狀態。 圖2是顯示在同鉸鏈，門開始打開之狀態的圖。 圖3是顯示在同鉸鏈，門被進一步打開之狀態的圖。 圖4是顯示在同鉸鏈，門旋轉180°後被完全地打開之 狀態的圖。 圖5是圖4的狀態之鉸鏈的左側面圖，以斷面顯示位 於同鉸鏈的上下之支承體。 圖6是由上方觀看設定於門及門框之本發明的第2實 施形態之附有自動封閉功能之隱藏式鉸鏈的情況之槪念圖 ’顯示門被關著之狀態。 圖7是顯示在同鉸鏈，門開始打開之狀態的圖。 圖8是顯示在同鉸鏈，門被大致打開90度之狀態的 圖。 圖9是顯示在同鉸鏈，門大致被完全地打開之狀態的 圖。 圖10是處於圖4及圖5的狀態之第1實施形態的附 -14- 1330681 有自動封閉功能之隱藏式鉸鏈的分解斜視圖，圖中省略了 安裝著該鉸鏈的門及門框。 【主要元件符號說明】 D :門 F :門框 Ρ 1〜Ρ 8 :旋轉銷 Ρ9、Ρ10:凸輪從動銷（從動件） 1 0 :隱藏式鉸鏈 1 2 :自動封閉裝置 14、16:第1及第2轉動構件（筒狀構件） 1 8、2 0 :第1連桿 22、24 :第2連桿 2 6、2 8 :滑件 28a 、 28b 、 26a 、 26b :壁（面） 26c、28c:細長的孔 30、32:支承體（支承構件） 3 4、3 6 :偏心圓盤（凸輪機構） 38、40 :第3連桿 4 2 :隱藏式鉸鏈 44、46:凸輪輪廓曲線部 -15-Fig. 1 shows the state in which the door D is closed, and Fig. 4 shows the state in which the doors D -11 - 1330681 are rotated by 18°. When the door D is gradually opened from the state of Fig. 1 to the state of Fig. 4, the cylindrical member 14 of the automatic closing device 12 relatively starts to rotate about the cylindrical center member 16 around the center axis of rotation 1 2a. Thereby, the second link 22 on the door frame side is rotated in the counterclockwise direction about the rotation center axis 1 2a, so that the third link 38 is rotated about the rotation pin P5 rotatably attached to the support body 32. Since the rotation pin P5 is fixed to the third link 38', the eccentric disk 34 fixed to the rotation pin P5 is also rotated in the counterclockwise direction around the rotation pin P5. The eccentric disk 34 is set such that when it is at the position of Fig. 1, the periphery furthest from the central axis of rotation of the rotary pin P5 is located vertically above the axis of rotation (viewed in Fig. 1). Therefore, when the eccentric disk 34 is rotated in the counterclockwise direction, the eccentric disk 34 presses the wall 28 a of the slider 28 toward the left side, thereby shifting the slider 28 toward the left side. Therefore, the automatic closing device 12 rotates around the rotation pin P2 and is displaced separately by the door frame F toward the left side. At the same time, the same action is also generated from the first to third links on the door D side, the slider, and the like. Thus, since the automatic closing device 12 is to be separated from the end faces of the door D and the door frame F when the door D is opened, the rotating pins PI and P2 are fixed to the door and the door frame even in the case of the conventional hidden hinge. In the case of a structure that causes interference with the door D or the door frame F, the door and the door frame are not interfered with, and the door can be opened. In the state of being opened in Fig. 4, the coil spring of the automatic closing device accumulates the restoring force, and if the door is opened, the returning force returns to the state of Fig. 1 -12-1330681. The action of the link mechanism at this time is opposite to that described above. In Figs. 6 to 9, other embodiments of the concealed hinge with the automatic closing function of the present invention are shown. The main components of this concealed hinge are the same as those shown in Figs. 1 to 5, and therefore the same elements are given the same symbols and displayed. As shown in the figure, the concealed hinge 42 is provided with first links 18 and 20 and second links 22 and 24 provided in the first and second tubular members 14 and 16 of the automatic closing device 12. In each of the first links 18 and 20, the sliders 26 and 28 are rotatably connected by the rotation pins PI and P2. The sliders 26, 28 are slidably attached to the support bodies 30, 32 (in the left-right direction in Fig. 6), and the support bodies are fixed to recesses formed at mutually adjacent end faces of the door or the door frame. 42. Without the third link, the front ends of the second links 22 and 24 which are bent in a substantially central portion are rotatably connected to the sliders 26 and 28 by the rotation pins P7 and P8. Cam followers (cam followers) P9 and P10 are provided at the bent portions of the second links 22 and 24, and the cam followers P9 and P10 and the cam profile portions formed on the support bodies 30 and 32 (specifically The grooves 44, 46 are slidingly engaged. As shown in FIGS. 6 to 9, when the door D is gradually opened by the closed state of FIG. 6, the cam followers P9, P10 are moved along the cam profile portions 44, 46, so that the rotation pins P7, P8 are close to each other. Since the directions of the links 18 and 20 are displaced, the sliders 26 and 28 are displaced so that the first links 18 and 20 that are rotatably connected to the sliders are respectively protruded from the supports 30 and 32. Therefore, similarly to the above-described embodiment, the automatic closing device 12 can open the door without interfering with the door frame edge. Further, although the embodiment of the concealed hinge of the present invention is shown, the present invention is not limited to the embodiments. For example, the automatic closing device 12 is not limited to the above-described one using a coil spring, and various members using a fluid, for example, may be used. [Illustration of the drawings] FIG. 1 is an automatic closing function of the present invention which is set to the door and the door frame as viewed from above. A commemorative view of the first embodiment of the concealed hinge shows a state in which the door is closed. Fig. 2 is a view showing a state in which the door is opened at the same hinge. Fig. 3 is a view showing a state in which the door is further opened in the same hinge. Fig. 4 is a view showing a state in which the door is completely opened after being rotated by 180° with the hinge. Fig. 5 is a left side elevational view of the hinge of the state of Fig. 4, showing the upper and lower supports in the same section as the hinge. Fig. 6 is a view showing a state in which the door is closed when the hidden hinge with the automatic closing function according to the second embodiment of the present invention set in the door and the door frame is viewed from above. Fig. 7 is a view showing a state in which the door is opened at the same hinge. Fig. 8 is a view showing a state in which the door is substantially opened by 90 degrees in the same hinge. Fig. 9 is a view showing a state in which the door is substantially completely opened in the same hinge. Fig. 10 is an exploded perspective view of the concealed hinge having the automatic closing function in the first embodiment of the state shown in Fig. 4 and Fig. 5, and the door and the door frame to which the hinge is attached are omitted. [Description of main component symbols] D: Door F: Door frame Ρ 1 to Ρ 8 : Rotary pin Ρ 9, Ρ 10: Cam follower (following member) 1 0 : Concealed hinge 1 2 : Automatic closing device 14, 16: 1 And the second rotating member (cylindrical member) 1 8 and 2 0 : the first link 22 and 24: the second link 2 6 and 2 8 : the sliders 28a, 28b, 26a, 26b: wall (face) 26c, 28c: elongated holes 30, 32: support body (support member) 3 4, 3 6 : eccentric disk (cam mechanism) 38, 40: third link 4 2 : concealed hinge 44, 46: cam profile portion -15-