577956 五、發明說明（丨） 〔技術領域〕 本發明為一種門用自動鉸鏈的鏈軸，主要藉上 下鏈軸間才目對的轉動後，利用門本身重力作用及高部與低 部間之斜面設計使高部自動轉至低部，高部與低部相對應 時’可呈定位或關Η狀態，可達到均勾控制門的開啟及自 動關閉功效。 〔先前技術〕 各種不同類型的「門」，如為各類具有門的傢俱，冰 箱、車門，各類的迴轉門等，「門」的主要目的係為用以 可供當作控制物品的開啟或是關閉，&「門」於建築物上 或傢俱或家電上的實用性係為相當廣泛的。 ” 傳統式習用的「門」，一般於「門」上設有欽鍵，於 其中一鉸鏈上形成一樞合體，其上形成有斜面，另具有二 旋轉體’其上相對前述的斜面處形成互補的斜面，藉由旋 轉體上的斜面與樞合體上的斜面相對配合，或是以兩斜面 的，部配合時，令門可以關閉或開啟，但是，上述的結構 於實際使用時，卻具有如后的缺點，有待改善： 1 ·各個斜面當於轉動9◦度時’並無提供可供定位 的功效，會造成使用上的不便。 2 ·當Η於開啟或是關_，似斜面予以配合，亦 即會造成旋轉體相對樞合體的斜面於上升或是下降時 因轉動而產生單邊的受力力量，因受力力量不平均，且有 開啟及關閉皆不夠順暢的缺點，當使用一段時間之後，則 會產生間隙’更容易令門於開啟及關閉時’發生不夠順暢 工張尺ΐϋ國國家標準（CNS)A4規格⑵〇 χ 2973公爱 A7 ^---B7 五、發明說明（义) ~~ - 的問題。 (請先閱讀背面之注意事項再填寫本頁) 本發明人有鑑於現有門用鉸鏈的結構於設計上未盡精 又’乃積極進行研究改良，經不斷的嚐試與試驗後，終於 發展出確具實用性功效之本發明。 〔發明内容〕 --線· 本發明之主要目的在於提供一種門用自動鉸鏈的鏈 軸，其係使用於門上，係以下鏈軸與上鏈軸以下、上位置 相對組成，下鏈軸上端的圓周位置各以1 8 〇度角分別形 成一組對應的高部與一組對應的低部，銜接於高部與低部 間為斜面，上鏈軸下端的圓周位置各以i 8 〇度角分別形 成一組相對的低部與一組相對的高部，每一相鄰之高部與 低部間旋轉角度為9 〇度，銜接高部與低部間為斜面，當 下、上鏈軸的高部相對時為開門狀態，藉上鏈軸與下鏈= 間相對的轉動，由門本身重力作用及高部及低部間之斜面 設計使高部自動轉至低部，高部與低部相對時，可呈定位 或關門狀態，可達到均勻控制門的開啟及自動關閉目的。 〔實施方式〕 請參閱第一、二圖所示，本發明係為一種門用自動鉸 鏈的鏈軸，該鏈轴係應用於門上，包括有： 係以下鏈軸（1 〇 )與上鏈軸（2 〇 )組成，該下鏈 軸（10)為呈中空的圓柱體，於下鏈軸（1 〇)上端的 圓周位置（1 1 )各以1 8 0度角分別形成一組相對的高 部（12)與一組相對的低部（13)，每一相鄰之高5 (1 2 )與低部（1 3 )間旋轉角度為9 〇度，銜接於言 4 !)//y30 A7 發明說明（3 部（1 2)與低部（工3 )之間 (12)及低部（13)處可為錐狀 4) ’於高部 或是弧面狀（如第五圖中所示）； °第四圖中所示） 上鏈軸（2〇)下端的圓周位f 度角分別形成—組相對的 ，亦以180 (23)，每-相鄰之高部（ i與-組相對的高部 轉角度為901，銜接低部（2 23 ::部（22)間旋 斜面（2 4)，可藉前述的低部（/7二23 )間為 間配合，高部（]_ 2 )與低邻 、高部（2 3 ) 、丄匕；畀低口P ( 2 2 ) 4) (2 4)間可相互配合； 配口’兩斜面（1 軸^ (30)，係可縱向貫設於办 (2 0 ) ( 1 〇 )之間，可令 Λ的上、下鏈軸 (1 0)樞轉》 2 〇)相對下鏈軸 藉上述結構的組合後而使用時(如第三圖中所示）， 可將上鏈軸（20)與下鏈軸（] r 9 Π 1 ^ r 1 η 1 N i〇)旁所設的固定片 (20 1) (1Q1)分別固設於門 2)上’當門（32)於枢轉開啟時，以下鏈2 與上鏈軸（2 0 )之間相對的轉動 〇) (20H ! η、μ 應，當上、下鍵軸 (2〇) (1〇)的上、下相對高部（2 3) (12)於 上、下相互對應時，係處於開門狀態。 ； 當要關門時，將鏈軸反向樞轉，可藉上鏈軸 =高部（23)、經由上鏈轴（1〇)上所 丄4)逐漸下降回復至原低部（13)定位後 關門狀態’本創作可利用高部（23) (12二 ΐ紙張尺度適时關家鮮（CNS)A4規格（21Q χ 2975公爱- (請先閱讀背面之注意事項再填寫本頁) · i線. 577956 A7 B7 五、發明說明（4) (22) ( 1 3 )與相對斜面（1 4 ) ( 2 4 )間的配 (請先閱讀背面之注意事項再填寫本頁) 合’與門本身重力作用及高部及低部間的斜面設計可回復 原位’可令門（3 2)達到均勻開啟及自動關閉的目的。 如第六、七圖中所示，係為本發明的第二較佳實施 例，大部份相同前述的下鏈軸（i 〇 )與上鏈轴（2 〇 ) 構造，不同處係在於··軸心（3 〇 )與上鏈轴（2 〇 )及 一杈向的固定片（4 〇 )固設為一體，其可供當作冰箱門 使用，亦即軸心（3 0 )、固定片（4 0 )及上鏈軸（2 0)固没為一體，下鏈轴（1 〇)可與冰箱的門固設；當 冰箱的門於開啟後（如第八圖中所示），同樣，亦可藉由 下鏈軸（1 〇)相對上鏈軸（2 〇 )之間的轉動功效，藉 由門本身重力作用及高部與低部間之斜面設計使高部自動 轉至低部，可達到均勻控制門的開啟及自動關閉目的。 如第九至十一圖中所示，係為本發明的第三較佳實施 例’其係為一種隱藏式的自動鉸鏈，包括有： 一呈中空圓柱狀的固定座（60)，其一側縱向形成 溝槽（6 1 )，溝槽（6 1 )亦可為複數個；一呈矩形 的蓋板（70)，以焊接固設於固定座（6〇)上，蓋板 (7 〇 )中央形成一圓孔（7 1 )，蓋板（7 〇 )兩側形 成數供調整角度用的長孔（7 2); 於固定座（60)中設有實心的下鏈軸（丄〇)及上 鏈軸（20) ’該上鏈軸（20)可由固定座（go)下 部朝上穿設，其可相對位於下鏈軸（丄〇)上，於上鏈軸 (2 0 )下端的圓周位置（2 1 )各以1 8 〇度角分別形 ί紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公 A7 A7 B7 、發明說明（g) 成^且相對的高部（2 3)及一組相對的 :接於高部（…與低部（22)<間為斜面)(2 f 9 β=鏈軸（2 0)上形成有圓轴（2 6 )及橢圓軸 ’圓軸（2 6 )係由下朝上穿入圓孔（7 1 ) 並令橢圓軸y r9fi1、 6 1 )朝上凸伸出蓋板（7 Ο )，橢圓軸 可與門的底部連接，上鏈軸（2 ◦)上的圓轴 外部環設數個滚珠（6 2 )，各滚珠（6 2)亦 可為轴承取代； ^了鏈軸（10)係由下穿入固定座（6〇)内並位於 ^ (2〇)下方，下鏈軸（10)上端的圓周位置 各^ 1 8 〇度角分別形成一組相對的高部（1 組相對的低部（13)，每一高冑（12)與低 、間為9 〇度，銜接於高部（1 2 )與低部（1 ，為斜面（14) ’可藉前述的低部（13)與高部 )配合，高部（1 2 )與低部（2 2 )配合，斜面 14) (24)間可相互配合，於下鏈軸（丄〇)的一 ::成-縱向設置的翼片（16)，翼片（16)係穿入 曰61)内部上、下移動，當翼片（16)為複數個 亦可與複數個溝槽（61)配合； 〇彈性70件（5 0 )，可提供下鏈軸（1 0 )適當的 ，t其可為彈簧或彈性膠，係設置於下鏈轴（1 0)下 P八有陰螺紋的底蓋（5 1 )係設置於彈性元件（5 0)下邛’底蓋（5 1 )係螺合於固定座（6 〇 )下部， 其可調整彈性元件（5 0 )之彈性。 (請先閱讀背面之注意事項再填寫本頁) · 線· 1 χ 297公釐） A7 A7 B7 五、發明說明（“577956 V. Description of the Invention (丨) [Technical Field] The present invention is a chain hinge for an automatic hinge for a door. It is mainly rotated by the upper and lower chain shafts, and then uses the gravity of the door and the distance between the upper and lower parts. The inclined surface design allows the high part to automatically turn to the low part. When the high part corresponds to the low part, it can be in a positioning or closed state, which can achieve the effect of uniformly opening and closing the door. [Prior art] Various types of "doors", such as various types of furniture with doors, refrigerators, car doors, various types of revolving doors, etc. The main purpose of "doors" is to be used as a control item for opening Or closed, the practicality of & "doors" on buildings or furniture or appliances is quite extensive. The traditional "door" is usually provided with a key on the "door", a hinge body is formed on one of the hinges, an inclined surface is formed on it, and two rotating bodies are formed on the opposite to the aforementioned inclined surface. Complementary bevels. The bevels on the rotating body and the bevels on the hinged body are mated to each other, or the two bevels are mated to make the door close or open. However, when the above structure is actually used, it has The following disadvantages need to be improved: 1 · When each bevel is rotated by 9◦ degrees, it does not provide positioning effects, which will cause inconvenience in use. 2 · When it is turned on or off, it looks like a beveled surface cooperates, that is to say, when the inclined surface of the rotating body is raised or lowered, the unilateral force is generated due to rotation, and the force is uneven. It also has the disadvantage that the opening and closing are not smooth enough. After using for a period of time, a gap will occur 'easier to make the door open and close'. It will not be smooth enough. The national standard (CNS) A4 specification will not work smoothly. χ 2973 Public love A7 ^ --- B7 V. The problem of invention description (meaning) ~~-. (Please read the precautions on the back before filling out this page) The present inventor has actively researched and improved in view of the incomplete design of the structure of the existing door hinges. After continuous trials and tests, it has finally developed The invention with practical effects. [Summary of the Invention] --- The main object of the present invention is to provide a chain shaft for an automatic hinge for a door, which is used on the door, and the lower chain shaft is composed of the lower chain shaft and the upper chain shaft in an opposite position, and the upper end of the lower chain shaft The circumferential positions of each form a set of corresponding high parts and a set of corresponding low parts at an angle of 180 degrees, connecting between the high and low parts as slopes, and the circumferential position of the lower end of the winding shaft at i 80 degrees The angles form a set of relative low parts and a set of relative high parts, respectively. The rotation angle between each adjacent high part and low part is 90 degrees, and the connection between the high part and the low part is an inclined plane. The current and winding axis When the upper part of the door is opposite, the door is opened. By the relative rotation of the upper shaft and the lower chain =, the gravity of the door and the design of the slope between the upper and lower parts automatically turn the upper part to the lower part. When the parts are opposite, it can be positioned or closed, which can achieve the purpose of uniformly controlling the opening and automatic closing of the door. [Embodiment] Please refer to the first and second figures. The present invention is a chain shaft of an automatic hinge for a door. The chain shaft system is applied to a door, and includes the following chain shafts (10) and a chain. The lower shaft (10) is a hollow cylinder. Each of the circumferential positions (1 1) of the upper end of the lower shaft (1 0) forms a group of relative angles at 180 degrees. The high part (12) and a set of relatively low parts (13), each adjacent high 5 (1 2) and the low part (1 3) have a rotation angle of 90 degrees, which is connected to the word 4!) /// y30 A7 Description of the invention (3 (1 2) and the lower part (work 3) (12) and the lower part (13) can be tapered 4) 'in the upper part or curved surface (such as the fifth figure (Shown in the figure); ° shown in the fourth figure) The f-degree angles of the circumference of the lower end of the winding shaft (20) are respectively formed into a group of opposites, also at 180 (23), each-the adjacent high part (i The rotation angle of the high part opposite to the-group is 901, connecting the lower part (2 23 ::: part (22) between the spiral bevels (2 4), and the aforementioned low part (/ 7: 23) can be used for the coordination between the high part and the high part.部 （] _ 2） and low neighbor, high part （2 3）, 丄 dagger; 畀 低 口 P (2 2) 4) (2 4) can cooperate with each other; distribution port 'two inclined planes (1 axis ^ (30), can be run vertically between the office (2 0) (1 0), can make Λ's upper and lower chain axis ( 1 0) Pivot》 2 〇) When using a combination of the above structure with respect to the lower shaft (as shown in the third picture), the upper shaft (20) and the lower shaft () r 9 Π 1 ^ r 1 η 1 N i〇) next to the fixed piece (20 1) (1Q1) fixed on the door 2) 'When the door (32) is pivotally opened, the following chain 2 and the winding shaft ( 2 0) Relative rotations 0) (20H! Η, μ should be when the upper and lower key shafts (2〇) (1〇) the upper and lower relatively high parts (2 3) (12) in the upper and lower When they correspond to each other, the doors are in the open state. When the door is to be closed, the chain shaft is pivoted in the reverse direction. The chain shaft can be gradually lowered by the chain shaft = the high part (23) and the chain shaft (10). Return to the original closed state after positioning (13) 'This creation can use the high part (23) (12 2ΐ paper size timely close home fresh (CNS) A4 specifications (21Q χ 2975 public love-(Please read the back first Please note this page before filling in this page) · i-line. 577956 A7 B7 V. Description of the invention (4) (22) (1 3) Matching the slopes (1 4) (2 4) (please read the precautions on the back before filling this page) The combination of the gravity effect of the AND door and the slope design between the upper and lower parts can be restored to the original position. The door (3 2) achieves the purpose of uniform opening and automatic closing. As shown in the sixth and seventh figures, it is the second preferred embodiment of the present invention, and most of the aforementioned lower shafts (i 〇) and Winding shaft (20) structure, the difference is that the shaft center (30) is fixed to the winding shaft (20) and a branch-shaped fixing piece (40), which can be used as The refrigerator door is used, that is, the axis (30), the fixing piece (40), and the winding shaft (20) are fixed into one body, and the lower shaft (100) can be fixed with the door of the refrigerator; After the door is opened (as shown in the eighth figure), the rotation effect between the lower shaft (10) and the upper shaft (20) can also be achieved by the gravity of the door itself and the upper part. The design of the slope between the lower part and the lower part automatically turns the upper part to the lower part, which can achieve the purpose of uniformly controlling the opening and automatic closing of the door. As shown in the ninth to eleventh drawings, it is the third preferred embodiment of the present invention. It is a hidden automatic hinge, including: a hollow cylindrical fixing seat (60), one Grooves (6 1) are formed longitudinally on the side, and the grooves (6 1) may also be plural; a rectangular cover plate (70) is fixed on the fixing base (60) by welding, and the cover plate (7 〇) ) A circular hole (7 1) is formed in the center, and long holes (7 2) for adjusting the angle are formed on both sides of the cover plate (7 〇); a solid chain shaft (丄 〇) is provided in the fixed seat (60). And the winding shaft (20) 'The winding shaft (20) can be passed upward through the lower part of the fixed seat (go), which can be relatively located on the lower shaft (丄 〇), at the lower end of the winding shaft (20). Circumferential positions (2 1) are each shaped at an angle of 180 °. Paper dimensions are applicable to Chinese National Standard (CNS) A4 specifications (210 X 297 male A7 A7 B7, invention description (g)) and relatively high parts (2 3) and a set of opposites: connected to the high part (... and the low part (22) < the slope is between them) (2 f 9 β = the chain axis (2 0) is formed with a circular axis (2 6) and an elliptical axis 'The round shaft (2 6) is inserted into the round hole from bottom to top ( 7 1) and make the elliptical axis y r9fi1, 6 1) project upwards to protrude the cover plate (7 Ο), the elliptical axis can be connected to the bottom of the door, and a number of external rings on the round axis on the winding axis (2 ◦) are set Ball (6 2), each ball (6 2) can also be replaced by a bearing; ^ the chain shaft (10) is inserted into the fixed seat (60) from below and is located below ^ (2〇), the chain shaft ( 10) A circumferential position at the upper end of each ^ 180 degree angle forms a set of relative high parts (1 set of relatively low parts (13), each high 胄 (12) and low, 90 degrees between, connected at The high part (1 2) and the low part (1, bevel (14) 'can be matched by the aforementioned low part (13) and high part), the high part (1 2) and the low part (2 2) are matched, and the bevel 14 ) (24) can cooperate with each other, and one of the lower chain shaft () 〇) ::--longitudinally arranged fins (16), the fins (16) penetrate into 61) and move up and down inside, when The fins (16) are plural and can also cooperate with the plurality of grooves (61); 0 elastic 70 pieces (50), which can provide the lower shaft (1 0), which can be spring or elastic rubber, The bottom cover (5 1) with female thread on the lower chain shaft (1 0) is set on the spring The bottom cover (5 1) of the lower part of the flexible element (50) is screwed to the lower part of the fixing base (60), and the elasticity of the elastic element (50) can be adjusted. (Please read the notes on the back before filling this page) · Thread · 1 χ 297 mm) A7 A7 B7 V. Description of the invention ("
缸广如第十二圖中所示，當門於開啟時，可驻P 二？〇)上的圓抽（26)及橢二，帶動上鏈 心上鍵軸（2〇)轉動，由於τ_( 61)轉動， (")限制於固定座（6〇) 係以翼片 上、下鍵轴（2〇) U0)的高^(2 )中，當 上、下相對時，可將下鏈軸（1 0)下麼，彈菩：：2 ) 呈壓縮；當上鏈軸（2 〇)上的高部 （5 〇) (1 〇 )的斜面（i 4 )下降至下錘) >σ耆下鏈轴 :1 3)時，因彈簧(50)的彈性回復作1用〇=:: 軸（1 0)上推，因下鏈軸（丄〇)的翼 定座（6 0)的溝槽（6工）限制住，下鏈軸（工口 可：固定座（6 0)内朝上移位，下鏈軸（工〇)只可： 固疋座（6 0)内上、下移位，亦即彈性元件（5⑻可 為伸張狀態（如第十一圖中所示）或壓縮狀態(如第十二 圖中所示），藉由上鏈軸（2〇)的轉動及下鏈軸（1 0)的上、下移位作用，可利用門本身的重力作用及高部 與低部間的斜面設計可使高部自動轉至低部，亦可達到均 勻控制門的開啟及自動關閉目的。 以上三個實施例，均以9 〇度為開啟狀態，反向9 〇 度為關門狀態，本創作中的每一相鄰之高部與低部間旋轉 角度為90度，上、下鏈軸（20) (10)間各有二個 高部、二個低部與四個斜面，可依實際需要開啟9 〇度， 上、下的咼部（2 3 )( 1 2)相對時為開啟暫停點；若 再順向轉動令上、下的高部（2 3 )與低部（1 3 )相對 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 577956As shown in the twelfth picture, when the door is open, can it stay in P? The circle drawing (26) and ellipse 2 on 〇) drive the key shaft (2) on the winding core to rotate. Due to the rotation of τ_ (61), (") is limited to the fixed seat (60). In the height ^ (2) of the lower key shaft (2〇) U0), when the upper and lower sides face each other, can the lower shaft (1 0) be lowered, and the bomb :: 2) is compressed; when the upper shaft ( 2 〇) on the upper part (5 〇) (1 〇) of the slope (i 4) down to the hammer) > σ 耆 chain shaft: 1 3), due to the elastic recovery of the spring (50) for 1 use 〇 = :: The shaft (1 0) is pushed up because the groove (6 workers) of the wing fixing seat (60) of the lower shaft (丄 0) is restricted. The lower shaft (the work port can be: the fixed seat (6) 0) shift upward from the inside, the lower chain shaft (work 0) can only: shift up and down in the fixed seat (60), that is, the elastic element (5⑻ can be stretched (as shown in Figure 11) (Shown) or in a compressed state (as shown in the twelfth figure), by the rotation of the upper shaft (20) and the up and down displacement of the lower shaft (1 0), the gravity of the door itself can be used And the slope design between the high part and the low part can make the high part automatically turn to the low part, and can also achieve uniform control of the door opening and automatic The above three embodiments all use 90 degrees as the open state and reverse 90 degrees as the closed state. The rotation angle between each adjacent high part and low part in this creation is 90 degrees. The lower chain shafts (20) and (10) each have two high sections, two low sections and four inclined planes, which can be opened at 90 degrees according to actual needs. The upper and lower crotch sections (2 3) (1 2) are opposite to each other. It is the pause point when it is turned on; if you rotate it in the forward direction, the upper part (2 3) and lower part (1 3) of the upper and lower parts apply the Chinese National Standard (CNS) A4 (210 X 297 mm) relative to the paper size. 577956
五、發明說明（ -時為1 8 0度開啟定位點；若反向轉動令高部（2 3 ) 與低部（1 3 )相對應時亦可為自動回復至關門狀態。 因此，經由以上之說明可知，本發明係以優異的結構 配置下，至少具有如后的優點： 可藉上鏈軸與下鏈軸之間相對的轉動，以門本身重力 作用及高部與低部間的斜面可回復原位，具有均勻控制門 的開啟或關閉作用： 以下鏈軸（1 〇)上端的圓周位置各以1 8 〇度角分 別形成一組相對的高部（i 2 )與一組對應的低部（工 3 )，每一相鄰之高部（1 2 )與低部（丄3 )間旋轉角 度為9 0度，連接於高部（χ 2 )與低部（丄3 )間具有 斜面（14),於上鏈軸（20)下端的圓周位置（2 1 )各以1 8 0度角分別形成一組相對的低部（2 2 )與 一組相對的高部（2 3)，每一相鄰之高部（23)與低 部（2 2 )間旋轉角度為9 0度，銜接高部（2 3 )與低 邛（22)間為斜面（24)，上鏈軸（20)與下鏈軸 (1 0 )之間可相對轉動，一組相對高部可使其於轉動 時，可產生有對稱之支點效果，而讓轉動時受力平均，不 會有單邊受力之缺點，以門本身之重力作用及高部與低部 間之斜面設計可使高部自動轉至低部，高部與低部相對時 可呈定位或關門狀態，可達到均勻控制門的開啟及自動關 閉目的。 〔圖式簡單說明〕 (一）圖式部分： 9 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) -裝 一SJ· --線· A7 五、 發明說明（另 第一圖：係本發日日4 & ^ 赞明之第一種較佳實施例的立體外 觀圖。 圖·係本發明之第一種較佳實施例的立體分 解圖。 一圖·係本發明之第一種較佳實施例當使用於 •門上的立體外觀圖。 四圖·係本發明之下鏈軸、上鏈軸的圓周於拉 長展開後的平面圖。 第五圖·係、本發明之下鏈轴、上鏈轴的另一種圓 ^ 周型態於拉長展開後的平面圖。 圖·係本發明之第二種較佳實施例的立體外 觀圖。 第七圖·係本發明之第二種較佳實施例的立體分 解圖。 第八圖：係本發 明之第二種較佳實施例的立體動 (請先閱讀背面之注意事項再填寫本頁) :裝 -trov · 線· 作圖 第九圖·係本發明之第三種較佳實施例的立體外 觀圖。 第十圖··係本發明之第三種較佳實施例的立體分 解圖。 第十一圖：係本發明之第三種較佳實施例的結合 剖視圖。 第十二圖：係本發明之第三種較佳實施例的結合 剖視動作圖。 本紙張尺度適用中國國家標準(CNSUli^zio X 297 577956 A7 _B7 五、發明說明（1 ) (二）圖號部分： (請先閱讀背面之注意事項再填寫本頁) (1 0 )下鏈軸 (1 0 1 )固定片 (1 1 )圓周位置 (1 2 )高部 (1 3 )低部 (1 4 )斜面 (1 6 )翼片 (2 0 )上鏈軸 (2 0 1 )固定片 (2 1 )圓周位置 (2 2 )低部 (2 3 )高部 (2 4 )斜面 (2 6 )圓軸 (2 6 1 )橢圓軸 (3 0 )軸心 (3 1 )門框 (3 2 )門 (4 0 )固定片 (5 0 )彈性元件 (5 1 )底蓋 (6 0 )固定座 (6 1 )溝槽 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 577956 A7 _B7 五、發明說明（（σ ) 2 0 12 6 7 7 7 珠板孔孔 滾蓋圓長 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）V. Description of the invention (-at 180 degrees to open the positioning point; if the reverse rotation causes the high part (2 3) and the low part (1 3) to correspond, it can automatically return to the closed state. Therefore, via the above It can be seen from the description that the present invention has at least the following advantages in an excellent structural configuration: the relative rotation between the upper and lower chain shafts, the gravity effect of the door itself, and the slope between the high and low sections It can return to its original position and has the function of uniformly controlling the opening or closing of the door: The circumferential positions of the upper ends of the following chain shafts (10) each form a group of relative high sections (i 2) and a group of corresponding ones at an angle of 180 degrees. The lower part (Work 3). The rotation angle between each adjacent high part (1 2) and the lower part (丄 3) is 90 degrees. It is connected between the high part (χ 2) and the lower part (丄 3). The inclined surface (14), at a circumferential position (2 1) at the lower end of the winding shaft (20), each forms a group of relatively low portions (2 2) and a group of opposite high portions (2 3) at an angle of 180 degrees. The rotation angle between each adjacent high part (23) and the low part (2 2) is 90 degrees, and the connection between the high part (2 3) and the low part (22) is an inclined plane (24). (20) It can rotate relative to the chain axis (1 0). A group of relatively high parts can make it have a symmetrical fulcrum effect when it rotates, so that the force is averaged during rotation and there is no unilateral Disadvantages of the force, the gravity of the door itself and the design of the slope between the high and low parts can automatically turn the high to the low. When the high and the low are facing, they can be positioned or closed, which can achieve uniform control of the door. [Schematic description] (I) Schematic part: 9 This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling out (This page)-Install a SJ · --line · A7 V. Description of the invention (another first picture: is a stereoscopic appearance of the first preferred embodiment of the first 4 & ^ praised. An exploded perspective view of the first preferred embodiment of the present invention. A figure is a perspective external view of the first preferred embodiment of the present invention when it is used on a door. Four figures are a chain shaft under the present invention, Plane view of the circumference of the winding shaft after being stretched and unfolded. Plane view of the other circle of the lower shaft and the upper shaft after being stretched and unfolded. Figure · is a perspective view of the second preferred embodiment of the present invention. Figure 7 is the first of the present invention Three-dimensional exploded view of the two preferred embodiments. Figure 8: The three-dimensional movement of the second preferred embodiment of the present invention (please read the precautions on the back before filling this page): installed -trov · line · operation Figure 9 is a perspective view of the third preferred embodiment of the present invention. Figure 10 is a perspective exploded view of the third preferred embodiment of the present invention. Figure 11 is a perspective view of the present invention. A combined sectional view of a third preferred embodiment. Fig. 12 is a combined sectional operation diagram of the third preferred embodiment of the present invention. This paper size applies to Chinese national standards (CNSUli ^ zio X 297 577956 A7 _B7 V. Description of the invention (1) (II) Drawing number: (Please read the precautions on the back before filling this page) (1 0) (1 0 1) Fixed piece (1 1) Circular position (1 2) High part (1 3) Low part (1 4) Slope (1 6) Finger (2 0) Wind shaft (2 0 1) fixed piece (2 1) Circular position (2 2) Low part (2 3) High part (2 4) Slope (2 6) Circular axis (2 6 1) Elliptical axis (3 0) Axial center (3 1) Door frame (3 2 ) Door (4 0) Fixing piece (50) Elastic element (51) Bottom cover (60) Fixing base (61) Groove This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) ) 577956 A7 _B7 V. Description of the invention ((σ) 2 0 12 6 7 7 7 The bead plate hole hole roll cover is long (please read the precautions on the back before filling this page) The paper size is applicable to Chinese National Standard (CNS) A4 size (210 X 297 mm)