JPH07331951A

JPH07331951A - Overhead door

Info

Publication number: JPH07331951A
Application number: JP11380095A
Authority: JP
Inventors: Masanori Sakurai; 正徳桜井
Original assignee: Sugatsune Kogyo Co Ltd
Current assignee: Sugatsune Kogyo Co Ltd
Priority date: 1994-04-15
Filing date: 1995-04-14
Publication date: 1995-12-19
Anticipated expiration: 2015-10-16
Also published as: JP3099221B2

Abstract

PURPOSE:To widely use the inside of a door mounting body by making an overhead door horizontally mountable on a top plate of the door mounting body in a state of being opened wide. CONSTITUTION:A support arm 4 pivoted to the inner surface of a side plate 4 of a door mounting body 1 by means of a turning shaft 15 is pivoted to a bracket 16 nearby the lower end of a door 8. An outer rail 9c in a pair of slide rails is installed in the backside of this door 8 to be longer in the vertical direction in an opposing manner. An upper end in an inner rail 9d of the slide rails is pivoted to a front edge of the top plate 2 of the door mounting body 1 with a hinge 10 by two hinge bodies 10a, 10b and a fulcrum shaft 10c, then the opened door 8 is drawn and mounted on the top plate 2, and then this top plate is pulled out, rotating and lowering it, whereby the door 8 is closed.

Description

Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、扉がキャビネット等の
扉取付体における開口部を垂下状態にて閉成し、この状
態から上方へ向けて開成されて行き、当該扉が扉取付体
の天板上に収置されて、当該開成状態を保持できるよう
にしたオーバーヘッドドアに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention closes an opening in a door mounting body such as a cabinet in a hanging state, and then opens upward from this state, and the door is a door mounting body. The present invention relates to an overhead door that is placed on a top plate and can hold the open state.

【０００２】[0002]

【従来の技術】従来、オーバーヘッドドアにおいては、
図５に示した如く、扉ａを扉取付体ｂの内部にあって、
その天板ｃの下位裏側に格納するようにしたもの（実公
昭６０−１８５２８号）が知られている。2. Description of the Related Art Conventionally, in an overhead door,
As shown in FIG. 5, with the door a inside the door mount b,
It is known that it is stored on the lower back side of the top plate c (Jitsuko Sho 60-18528).

【０００３】しかし、上述のオーバーヘッドドアにあっ
ては、扉ａおよび扉取付体ｂに対して、扉ａを上下方向
へ回動により開閉するための支持杆ｄや短杆ｅを取り付
けたり、これらにスプリングｆを張設するだけでなく、
スライドレールｇと戸車ｈとによるスライド機構が内付
けとなることから、扉ａの取付および扉取付後の扉ａの
位置調整操作が行い難かったり、また、扉ａが扉取付体
ｂの内部に格納されることになるため、扉取付体ｂ内部
の収納スペースが狭くなってしまう難点もある。However, in the above-mentioned overhead door, a support rod d and a short rod e for opening and closing the door a by rotating the door a in the vertical direction are attached to the door a and the door mounting body b. Not only tension the spring f on the
Since the slide mechanism consisting of the slide rail g and the door roller h is internally mounted, it is difficult to perform the door a mounting operation and the position adjusting operation of the door a after the door mounting, and the door a is installed inside the door mounting body b. Since it is stored, there is also a problem that the storage space inside the door mounting body b becomes narrow.

【０００４】さらに、扉ａの開成状態では、支持杆ｄお
よびスプリングｆが露呈するため、体裁が悪い上、開閉
操作時に、スプリングｆおよび当該スプリングｆと支持
杆ｄとの間等に誤って指先などを挟んでしまう危険性も
ある。Further, since the support rod d and the spring f are exposed when the door a is opened, the appearance is not good and the fingertip is erroneously placed between the spring f and the spring f and the support rod d during the opening / closing operation. There is also a risk of getting caught.

【０００５】[0005]

【発明が解決しようとする課題】本発明は、上記従来技
術の有するこのような問題点に鑑み、請求項１では、支
持アームとスライドレールとを適切に採択することで、
上方への回動によって開成した扉を、そのまま扉取付体
の天板上に収置できるようにすることで、扉およびその
付設機構等が、被収納物の出し入れの妨げとならないよ
うにするのが、その目的である。SUMMARY OF THE INVENTION In view of the above problems of the prior art, the present invention proposes that the support arm and the slide rail are appropriately selected.
The door opened by turning upward can be stored on the top plate of the door mounting body as it is, so that the door and its attached mechanism do not obstruct the loading and unloading of stored items. But that is the purpose.

【０００６】次に請求項２にあっては、上記請求項１の
構成に加えて、引張りばねが扉裏面の凹溝条内に添設さ
れ、扉の開閉時にも扉から離反しないように構成するこ
とで、扉開閉の操作時に、引張りばねに指先等を挟むこ
とのないようにし、しかも、当該引張りばねによって、
扉の閉成操作を緩徐に行うことができ、開成操作を軽い
力によって簡易に行い得るようにしている。Next, in addition to the structure of claim 1, a tension spring is provided in a concave groove on the back surface of the door so as not to separate from the door even when the door is opened and closed. This prevents the fingertips from being caught in the tension spring when the door is opened and closed.
The door closing operation can be performed slowly, and the opening operation can be easily performed with a light force.

【０００７】さらに、請求項３によるときは、上記請求
項１の機構にあって、単にキャビネット等の扉取付体に
あって、その側板内面と扉との間に、支持アームの両端
を、夫々枢着するのではなく、支持アームの一端がダン
パーを介して扉取付体の側板内面に枢着されるようにす
ることで、扉を開成して扉取付体の天板上に収置するよ
うにした状態から、閉成状態に閉扉しようとする際、当
該ダンパーによる抵抗力、すなわち、扉荷重トルクに対
する緩衝作用により、扉の閉成動作を、衝撃なく緩徐に
行い得るようにしている。Further, according to claim 3, in the mechanism of the above-mentioned claim 1, in a door mounting body such as a cabinet, both ends of the support arm are respectively disposed between the inner surface of the side plate and the door. Instead of pivoting, one end of the support arm is pivotally attached to the inner surface of the side plate of the door mounting body through a damper so that the door can be opened and placed on the top plate of the door mounting body. When the door is closed from the above state to the closed state, the resistance of the damper, that is, the buffering action against the load torque of the door allows the closing operation of the door to be performed slowly without impact.

【０００８】請求項４によるときは、上記の請求項３に
おける如く、ダンパーによる制動力を用いて、閉扉作動
を円滑にして、緩やかに行い得るようにするだけでな
く、さらに、前記の請求項２によって説示した如き引張
りばねを適所に設定することで、閉扉時における扉の閉
動を、さらに円滑にして、ゆるやかに行い得るようにす
ると共に、当該引張りばねの伸長により蓄勢された復原
力によって、扉の開成動作をも軽快に行い得るようにし
ている。According to the fourth aspect, as in the third aspect, not only the braking force by the damper is used to smoothly and smoothly perform the closing operation of the door, but also the above-mentioned aspect. By setting the tension spring as described in 2 in place, the closing movement of the door at the time of closing the door can be made smoother and gentler, and the restoring force stored by the extension of the tension spring is stored. By doing so, the opening operation of the door can be performed easily.

【０００９】そして、請求項５にあっては、上記の請求
項３における構成にあって、そのダンパーに対して適切
にコイルばねを付設することにより、当該コイルばねに
よって、扉の閉成時におけるダンパーの制動力に加え
て、上記コイルばねによる制動力をも加算させ、これに
よる扉の閉動を、より一層、ゆるやかになし得るように
すると共に、扉の閉成時にあって、上記のコイルばねに
蓄勢された復原力を有効に利用して、閉扉の作動を、よ
り軽快に行い得るようにしている。According to a fifth aspect of the present invention, in the structure of the third aspect, a coil spring is appropriately attached to the damper so that the coil spring can be used to close the door. In addition to the braking force of the damper, the braking force of the coil spring is also added so that the door can be closed more smoothly by using the braking force. By effectively utilizing the restoring force stored in the spring, the door closing operation can be performed more lightly.

【００１０】そして、請求項６においては、上記の請求
項５に係る構成に加えて請求項４における如き引張りば
ねをも付加することで、扉の閉成時にあっては、ダンパ
ーによる制動力だけでなく、上記のコイルばねに基づく
制動力をも発揮させて、扉に充分緩徐な閉動を行わせる
ようにすると共に、扉を開成しようとするときは、上記
の引張りばねとコイルばねとの復原力を活用し得るよう
にして、開成操作を、より軽い力で実施できるようにし
ている。In addition, in the sixth aspect, by adding the tension spring as in the fourth aspect in addition to the structure according to the fifth aspect, only the braking force by the damper is applied when the door is closed. Not only that, the braking force based on the coil spring is also exerted so that the door can be closed slowly, and when the door is to be opened, the tension spring and the coil spring By making use of the restoring force, the opening operation can be performed with a lighter force.

【００１１】[0011]

【課題を解決するための手段】本発明は、上記の目的を
達成するため、請求項１にあってはキャビネット等によ
る扉取付体の側板内面に、支持アームの基端を回転自在
なるよう軸支して、その先端を扉裏面の下端部近傍に枢
着し、一方、前記扉の裏面には、ボールリテーナーを介
して長尺のアウターレールと短尺のインナーレールをス
ライド自在に係嵌してなるスライドレールの、上記アウ
ターレールを上下方向に長く併設し、当該扉が回動とス
ライドにより上下方向へ開閉可能にして、かつ、前記扉
取付体の天板上に収置可能なるよう、前記インナーレー
ルの上端が、扉取付体の天板前縁にヒンジを介して枢着
されるようにしたことを特徴とするオーバーヘッドドア
を提供しようとしている。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a shaft for rotatably supporting a base end of a support arm on an inner surface of a side plate of a door mounting body such as a cabinet. The front end of the door is pivotally attached near the lower end of the back of the door, while the back of the door is slidably fitted with a long outer rail and a short inner rail via a ball retainer. The outer rail of the slide rail is vertically attached vertically, and the door can be opened and closed vertically by rotating and sliding, and can be placed on the top plate of the door mounting body. It is intended to provide an overhead door characterized in that the upper end of the inner rail is pivotally attached to the front edge of the top plate of the door mount through a hinge.

【００１２】請求項２では、上記請求項１の構成に加え
て、扉の裏面には凹溝条を上下方向に長く凹設して、当
該凹溝条内には、引張りばねを、その各端部が夫々前記
ヒンジの上端と、前記凹溝条下端とに夫々掛装張設さ
れ、当該引張りばねにより前記インナーレールに対し
て、アウターレールと扉とが、その下動は制御され、上
動は付勢されるようにしたことを、その内容としてい
る。According to a second aspect of the present invention, in addition to the structure of the first aspect, a recess groove is formed on the back surface of the door so as to be elongated vertically, and a tension spring is provided in each recess groove. The ends are respectively hooked on the upper end of the hinge and the lower end of the groove, and the outer rail and the door are controlled to move downward with respect to the inner rail by the tension spring. The content of the movement is that it is urged.

【００１３】請求項３の場合には、キャビネット等によ
る扉取付体の側板内面に、ダンパーを固定し、当該ダン
パーの回転軸に支持アームの基端を固定して、その先端
を扉裏面の下端部近傍に枢着し、一方、前記扉の裏面に
は、ボールリテーナーを介して長尺のアウターレールと
短尺のインナーレールをスライド自在に係嵌してなるス
ライドレールの、上記アウターレールを上下方向に長く
併設し、当該扉が回動とスライドにより、上下方向へ開
閉可能にして、かつ、前記扉取付体の天板上に収置可能
なるように前記インナーレールの上端が、扉取付体の天
板前縁にヒンジを介して枢着されるようにしたことを特
徴とするオーバーヘッドドアを提供しようとしている。According to the third aspect of the present invention, the damper is fixed to the inner surface of the side plate of the door mounting body such as a cabinet, the base end of the support arm is fixed to the rotary shaft of the damper, and the tip thereof is the lower end of the back surface of the door. On the other hand, the outer rail of the slide rail vertically slidably fitted on the back surface of the door on the back side of the door is slidably fitted with a long outer rail and a short inner rail via a ball retainer. The door is mounted on the top plate of the door mounting body so that the door can be opened and closed vertically by rotating and sliding, and the upper end of the inner rail is It is intended to provide an overhead door characterized by being pivotally attached to a front edge of a top plate via a hinge.

【００１４】請求項４にあっては、請求項３の構成に加
えて、扉の裏面には凹溝条を上下方向を上下方向に長く
凹設して、当該凹溝条内には、引張りばねを、その各端
部が夫々前記ヒンジの上端と、凹溝条下端とに夫々掛装
張設され、当該引張りばねにより、前記インナーレール
に対して、アウターレールと扉とが、その下動は制御さ
れ、その上動は付勢されるようにしたことを、その内容
としている。According to a fourth aspect of the present invention, in addition to the structure of the third aspect, a recessed groove is formed on the back surface of the door so as to extend vertically in the vertical direction, and a pulling groove is provided in the recessed groove. Each end of the spring is stretched over the upper end of the hinge and the lower end of the groove, and the tension spring causes the outer rail and the door to move downward relative to the inner rail. Is controlled and its upward movement is urged.

【００１５】請求項５によるときは、キャビネット等に
よる扉取付体の側板内面に、ダンパーを固定し、当該ダ
ンパーの回転軸に支持アームの基端を固定して、その先
端を扉裏面の下端部近傍に枢着し、一方、前記扉の裏面
には、ボールリテーナーを介して長尺のアウターレール
と短尺のインナーレールをスライド自在に係嵌してなる
スライドレールの、上記アウターレールを上下方向に長
く併設し、当該扉が回動とスライドにより、上下方向へ
開閉可能にして、かつ前記扉取付体の天板上に収置可能
なるように、前記インナーレールの上端を扉取付体の天
板前縁にヒンジを介して枢着され、さらに、前記ダンパ
ーには、コイルばねを、扉閉成方向への回転によって、
巻き方向へねじ込み自在なるように、その端部を回転軸
側とダンパーの本体側とに夫々掛装配設し、当該コイル
ばねによる復原力により、前記インナーレールに対し
て、アウターレールと扉とを上方に付勢させるようにし
たことを特徴とするオーバーヘッドドアを提供しようと
している。According to the present invention, the damper is fixed to the inner surface of the side plate of the door mounting body such as a cabinet, the base end of the support arm is fixed to the rotary shaft of the damper, and the tip of the damper is fixed to the lower end of the back surface of the door. On the other hand, the outer rail of the slide rail, which is pivotally mounted in the vicinity of the door, is slidably engaged with a long outer rail and a short inner rail through a ball retainer on the back surface of the door. The upper end of the inner rail is in front of the top plate of the door mount so that the door can be opened and closed vertically by rotating and sliding and can be stored on the top plate of the door mount. A hinge is pivotally attached to the edge via a hinge, and a coil spring is attached to the damper by rotation in the door closing direction.
The ends are mounted on the rotating shaft side and the damper body side so that they can be screwed in the winding direction, and the outer rail and the door are attached to the inner rail by the restoring force of the coil spring. An attempt is made to provide an overhead door characterized by being biased upward.

【００１６】請求項６によるときは、上記請求項５に加
えて、前記扉の裏面には凹溝条を上下方向に長く凹設し
て、当該凹溝条内には、引張りばねを、その各端部が夫
々前記ヒンジの上端と、凹溝条下端とに夫々掛装張設さ
れ、当該引張りばねにより、前記インナーレールに対し
て、アウターレールと扉とが、その下動は制御され、そ
の上動は付勢されるようにしたことを、その内容として
いる。According to claim 6, in addition to the above-mentioned claim 5, a recess groove is formed on the back surface of the door so as to be elongated vertically, and a tension spring is provided in the recess groove. Each end is respectively stretched and installed on the upper end of the hinge and the lower end of the concave groove, and by the tension spring, the outer rail and the door are controlled with respect to the inner rail, and the downward movement thereof is controlled. The content of this is that the upward movement is urged.

【００１７】[0017]

【作用】請求項１によるオーバーヘッドドアによるとき
は、吊下げ状態にて閉成されている扉の下端を持ち、こ
れを手前に引き上げると、その引上げ力は、扉を介して
支持アームに対し開扉方向の回転力として加えられるの
で、扉は開成されて行く。When the overhead door according to claim 1 is used, the lower end of the door which is closed in a suspended state is held, and when the door is pulled up toward the front, the pulling force opens to the support arm through the door. The door is opened because it is applied as a rotational force in the direction of the door.

【００１８】扉と支持アームの枢着点が、当該支持アー
ムと扉取付体の側板との枢着点より上部位置まで回転さ
れて行くと、インナーレールが扉取付体の天板前縁にヒ
ンジによって回転自在に枢着されているので、扉は当該
ヒンジにより上方へ回動され、アウターレールが扉に固
定されていることから、インナーレールに対してアウタ
ーレールは扉を伴って上方へスライドし、当該扉は、そ
の扉取付体の天板上方へ向けてスライドしながら回動
し、上記天板上へ水平状態に開成載置される。When the pivot point between the door and the support arm is rotated to a position above the pivot point between the support arm and the side plate of the door mount, the inner rail is hinged to the front edge of the top plate of the door mount. Since the door is rotatably pivoted, the door is rotated upward by the hinge and the outer rail is fixed to the door, so the outer rail slides upward with the door relative to the inner rail, The door rotates while sliding toward the upper side of the top plate of the door mounting body, and is opened and placed on the top plate in a horizontal state.

【００１９】上記の収納状態から、扉の前端をもって、
手前側に引出したならば、扉の前端を押し下げると、そ
の押し下げ力がスライドレールを介して支持アームに、
上述の開成時と反対方向の回転力として加えられるの
で、スライドレールは、ヒンジ軸を中心として回動し、
一方、扉は支持アーム基端と扉取付体の側板との枢着点
を中心として回動される。扉を所定角度だけ回転後は、
扉の荷重トルクにより当該扉は回転下降し、閉成状態と
なる。From the above stored state, hold the front end of the door,
If you pull it out to the front side, push down the front end of the door and the pushing down force will be applied to the support arm via the slide rail.
Since it is applied as a rotational force in the opposite direction to that at the time of opening, the slide rail rotates about the hinge axis,
On the other hand, the door is rotated about a pivot point between the base end of the support arm and the side plate of the door mounting body. After rotating the door by a predetermined angle,
The load torque of the door causes the door to rotate and descend, and the door is closed.

【００２０】次に請求項２の如く、上記請求項１に加え
て引張りばねが付加されている場合には、前記の如く扉
の下端を持ち開成させて行けば、これまた請求項１の説
示と同じように、扉と支持アームの枢着点が、当該支持
アームと扉取付体の側板との枢着点より上部位置まで回
転されて行くと、インナーレールが扉取付体の天板前縁
にヒンジによって回転自在に枢着され、かつ、引張りば
ねを具備していることから、引張りばねの張力により扉
を上方へ回動させるモーメントが生じ、アウターレール
は扉に固定されていることから、インナーレールに対し
てアウターレールは扉を伴って上方へスライドし、当該
扉は、その扉取付体の天板上方へ向けてスライドしなが
ら回動し、上記天板上へ水平状態に開成載置される。Next, when a tension spring is added to the above-mentioned claim 1 as in claim 2, if the lower end of the door is held and opened as described above, the explanation of claim 1 is also given. Similarly, when the pivot point of the door and the supporting arm is rotated to a position above the pivot point of the supporting arm and the side plate of the door mounting body, the inner rail moves to the top edge of the top plate of the door mounting body. Since the hinge is rotatably pivotally attached and the tension spring is provided, the tension of the tension spring causes a moment to rotate the door upward, and the outer rail is fixed to the door. The outer rail slides upward with the door with respect to the rail, and the door rotates while sliding upward toward the top plate of the door mounting body, and is placed on the top plate in a horizontal position. It

【００２１】また、上記の如き扉開成時にあっては、引
張りばねの張力により、扉は後方へスライドし、扉取付
体の天板上に水平状態の開成位置となり、扉から手が離
されても、当該扉は開成状態に保持され、天板上に載置
された収納状態に保持される。Further, when the door is opened as described above, the tension of the tension spring causes the door to slide rearward to reach the horizontal open position on the top plate of the door mounting body, and the hand is released from the door. Also, the door is held in the open state and held in the housed state placed on the top plate.

【００２２】上記の収納状態から、扉の前端をもって、
これを引張りばねの張力に抗して手前側に引出したなら
ば、請求項１につき説示した通り、扉の前端を押し下げ
ると、その押し下げ力がスライドレールを介して支持ア
ームに、上述の開成時と反対方向の回転力として加えら
れるので、スライドレールは、ヒンジ軸を中心として回
動し、一方、扉は支持アーム基端と扉取付体の側板との
枢着点を中心として回動される。扉を所定角度だけ回転
後は、扉の荷重トルクにより当該扉は回転下降し、閉成
状態となるが、請求項２では、上記の如き扉閉成作動時
にあって、引張りばねが伸長され、次回の扉開成に際し
て、当該開成を軽快に行うための張力が蓄勢されること
になる。From the above stored state, hold the front end of the door,
If this is pulled out to the front side against the tension of the tension spring and the front end of the door is pushed down as described in claim 1, the pushing down force is applied to the support arm via the slide rail at the time of opening. The slide rail rotates about the hinge axis, while the door rotates about the pivot point between the base end of the support arm and the side plate of the door mounting body. . After the door is rotated by a predetermined angle, the door is rotated and lowered by the load torque of the door to be in the closed state. However, in claim 2, the tension spring is extended during the door closing operation as described above. When the door is opened next time, tension is stored to facilitate the opening.

【００２３】請求項３によるときは、前記請求項１にお
ける支持アームにつき、その基端を直接扉取付体の側板
内面に軸支することなく、ダンパーを介しての軸支構成
としてあるから、既に詳記の扉開成作動時にあっては、
ダンパーの回転軸が回動するものの、ダンパーによる抵
抗力は生じないようになっており、従って、当該扉は抵
抗なく回動され、前記の如く扉取付体の天板上に水平状
態にて開成載置される。これに対し、扉閉成時は、ダン
パーの本体に対して、回転軸および図示されていない内
筒が、上述の開成時と反対方向に回動されるようにな
り、これによって、既知の如くダンパーは扉の荷重トル
クに対する制動力を発揮し、当該扉はゆるやかに回動し
て扉は吊下された閉成状態となる。According to the third aspect, the support arm of the first aspect has a structure in which the base end of the support arm is not directly supported on the inner surface of the side plate of the door mounting body but is supported by the damper. When opening the detailed door,
Although the rotating shaft of the damper rotates, the resistance force of the damper does not occur. Therefore, the door is rotated without resistance, and the door is opened horizontally on the top plate of the door mounting body as described above. Placed. On the other hand, when the door is closed, the rotary shaft and the inner cylinder (not shown) are rotated with respect to the damper body in the direction opposite to the direction when the door is opened. The damper exerts a braking force against the load torque of the door, and the door is gently rotated so that the door is in a suspended closed state.

【００２４】請求項４のオーバーヘッドドアによるとき
は、上記の請求項３に引張りばねを付加したものであ
り、この引張りばねの作用は、前記の請求項２について
既述した通りであるから、扉開成時にあってはダンパー
による抵抗力は生ぜす、しかも引張りばねは開扉状態に
て充分に伸長され復原力を蓄勢しているから、当該復原
力により扉の開成操作が助勢され、請求項２と実質的に
同じ開成作動状態となる。When the overhead door according to claim 4 is used, a tension spring is added to the above claim 3, and the action of this tension spring is as already described for the above claim 2, so that the door is opened. At the time of opening, the resistance force by the damper is generated, and further, since the tension spring is fully extended and stores the restoring force in the opened state, the restoring force assists the opening operation of the door. The opening operation state is substantially the same as 2.

【００２５】さらに、扉閉成時にあっては、請求項３の
場合と同じくダンパーが、閉成する扉に対して抵抗力を
与えるだけでなく、引張りばねも扉閉成時にあって、扉
の動きに対し抵抗力を付与することになるから、上記両
者の抵抗力が加算されて、より信頼性のある、また重い
扉に対しても実効のある、緩徐な閉扉を実現し得ること
になる。Further, at the time of closing the door, not only the damper exerts a resistance force on the closing door as in the case of the third aspect, but also the tension spring is at the time of closing the door. Since resistance is given to movement, the resistance of both of the above is added, and more reliable and slow closing that is effective even for heavy doors can be realized. .

【００２６】さらに、請求項５にあっては、請求項３の
構成にあって、そのダンパーにコイルばねを付加するよ
うにしたので、扉開成時にあってはダンパーによる抵抗
力を生じないが、上記のコイルばねは閉扉状態にあって
巻き込まれて復原力を蓄勢した状態となっているから、
扉の開成操作が、当該復原力により助勢されて、軽快な
開成動作を保証することができる。Further, in the fifth aspect of the present invention, in the structure of the third aspect, the coil spring is added to the damper, so that the resistance force due to the damper does not occur when the door is opened, Since the coil spring is in the closed state and is rolled up to store the restoring force,
The opening operation of the door is assisted by the restoring force, and a light opening operation can be guaranteed.

【００２７】また、扉閉成時にあっては前記の如くダン
パーによる抵抗力が作用すると共に、コイルばねが巻き
込まれることになることから、このとき生ずる抵抗力
も、ダンパーによる抵抗力に加算され、扉の閉成に際し
て充分な制動力が印加されることで、ゆっくりとした閉
扉を行わせることができる。Further, when the door is closed, the resistance force of the damper acts as described above, and the coil spring is caught. Therefore, the resistance force generated at this time is also added to the resistance force of the damper, and the door is closed. By applying a sufficient braking force when closing the door, the door can be closed slowly.

【００２８】請求項６の場合には、上記請求項５の構成
に、前記した請求項４に係る引張りばねをも併用するよ
うにしたものであるから、扉開成時にはダンパーによる
抵抗力は作用せず、コイルばねと引張りばねに蓄勢の両
復原力を利用でき、これにより、一層軽い力での開扉操
作を行うことができる。In the case of claim 6, since the tension spring according to claim 4 is also used in the configuration of claim 5, the resistance force of the damper does not act when the door is opened. Instead, it is possible to use both the restoring force of the energy stored in the coil spring and the tension spring, which allows the door opening operation with a lighter force.

【００２９】また、扉閉扉時にあっては、もちろんダン
パーによる抵抗力が発揮されるだけでなく、これにコイ
ルばねと引張りばねによる抵抗力も加算されることにな
ることから、扉は、さらに、緩徐な閉成動作を、高い信
頼性をもって実現し得ることになる。Further, when the door is closed, of course, not only the resistance force due to the damper is exerted, but also the resistance force due to the coil spring and the tension spring is added to this, so that the door is further slowed down. Such a close operation can be realized with high reliability.

【００３０】[0030]

【実施例】以下、本発明につき、請求項１乃至請求項４
に係るオーバーヘッドドアの構成を示す閉扉状態の縦断
面図である図１と、開扉状態の図３におけるII−II線矢
視断面図である図２と、図２のIII −III 線矢視断面図
である図３および、請求項５と請求項６に係るコイルば
ねの付加構成を示した一部切欠の側面図である図４を参
照して以下詳記する。本発明に係るキャビネット等の扉
取付体１は、天板２、底板３、左右の側板４、背板５と
により、前面を開口部６とした箱状に形成され、上記天
板２の前縁にあって、その左右両側には、後述するヒン
ジ１０の取付用凹欠部７が切欠されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to claims 1 to 4.
1 is a vertical cross-sectional view showing a configuration of an overhead door according to the present invention in a closed state, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. Detailed description will be given below with reference to FIG. 3 which is a cross-sectional view and FIG. 4 which is a partially cutaway side view showing an additional configuration of the coil spring according to claims 5 and 6. A door mounting body 1 such as a cabinet according to the present invention is formed in a box shape having a front surface with an opening 6 by a top plate 2, a bottom plate 3, left and right side plates 4, and a back plate 5. At the edges, on both left and right sides, mounting recesses 7 for the hinge 10 to be described later are cut out.

【００３１】扉８は、厚肉板状にして、上記扉取付体１
における開口部６の前面にアウトセットの外付け状態と
なるように、その高さおよび横幅の寸法が設定されてお
り、その裏面における、左右側には、スライドレール
９、９が、そのアウターレール９ｃを固定することで、
上下方向へ長く併設されている。The door 8 is made of a thick plate, and the door mounting body 1 is provided.
The height and width of the opening 6 are set so that the outset is externally attached to the front surface of the opening 6, and the slide rails 9 and 9 are provided on the left and right sides of the rear surface of the outer rail. By fixing 9c,
Along the vertical direction.

【００３２】上記スライドレール９は、周知のように複
数のスチールボール９ａ‥‥‥を回転自在に保持したボ
ールリテーナー９ｂを介して、長尺のアウターレール９
ｃと短尺のインナーレール９ｄとを、スライド自在に係
嵌して形成され、当該短尺であるインナーレール９ｄの
裏面上端には、板状とした二個のヒンジ本体１０ａ、１
０ｂの各端部を、支軸１０ｃにより開閉自在に枢着した
拡幅のヒンジ１０にあって、その、一方のヒンジ本体１
０ａが固着されている。そして以上の構成は、請求項１
乃至請求項６の全部について共通である。As is well known, the slide rail 9 has a long outer rail 9 via a ball retainer 9b that rotatably holds a plurality of steel balls 9a.
c and a short inner rail 9d are slidably engaged with each other, and two short plate-shaped hinge main bodies 10a, 1 are provided on the upper end of the back surface of the short inner rail 9d.
0b is a hinge 10 of wide width in which each end is pivotally attached by a support shaft 10c so as to be openable and closable.
0a is fixed. And the above configuration is claim 1.
The same applies to all of claims 6 to 6.

【００３３】また、上記扉８の裏面にあって、請求項
２、請求項４、請求項６にあっては、上記したスライド
レール９、９の左右両側に、引張りばね１１、１１を内
装するための凹溝条１２、１２が、上下方向へ長く併設
されている。Further, on the back surface of the door 8, in the second, fourth and sixth aspects, tension springs 11 and 11 are provided on both the left and right sides of the slide rails 9 and 9, respectively. The concave groove strips 12, 12 are provided side by side in the vertical direction.

【００３４】上記の引張りばね１１、１１は、その一端
を上記ヒンジ１０の上端にあって、その左右両側に突設
したばね掛け１０ｄ、１０ｄに掛止し、他端は、上記凹
溝条１２、１２の下端に植設したばね掛け１３、１３に
掛止することで、上記凹溝条１２、１２内にて張設され
ている。One end of each of the tension springs 11 and 11 is located at the upper end of the hinge 10 and is hooked on spring hooks 10d and 10d provided on both left and right sides of the hinge 10, and the other end thereof is connected to the groove groove 12. The spring hooks 13 and 13 are planted at the lower ends of the hooks 12 and 12, so that they are stretched in the groove grooves 12 and 12.

【００３５】そして、上記した扉８は、全請求項に共通
して上記ヒンジ１０における一方のヒンジ本体１０ｂ
を、上記扉取付体１の天板２における前縁の前記凹欠部
７内にあって、図示しないビス止めにより固定し、これ
によって、ヒンジ１０の支軸１０ｃを中心として上下方
向へ回動自在に枢着されている。このことにより、イン
ナーレール９ｄに対してアウターレール９ｃと、これに
固定の扉８は、上下方向へスライド自在にして、請求項
２、請求項４、請求項６の如く引張りばね１１、１１を
設けた場合には、閉扉状態における伸長された引張りば
ね１１、１１の復原力に基づく張力により、開扉方向へ
付勢されることとなる。尚、ここで、図示の実施例で
は、引張りばね１１、１１だけでなく、スライドレール
９、９も扉８の裏面に形成した凹溝条１２、１２に取着
するようにしているが、スライドレール９、９について
は、これを凹溝条１２、１２ではなく、同上裏面上に取
着することもできる。The door 8 is common to all claims, and the hinge body 10b is one of the hinges 10 in the hinge 10.
Is fixed in the recessed portion 7 at the front edge of the top plate 2 of the door mounting body 1 by a screw stop (not shown), whereby the hinge 10 is pivoted about the support shaft 10c in the vertical direction. It is freely pivoted. As a result, the outer rail 9c and the door 8 fixed to the outer rail 9c are slidable in the vertical direction with respect to the inner rail 9d, and the tension springs 11 and 11 are provided as in claim 2, claim 4, and claim 6. If provided, the tension springs 11 and 11 in the closed state are urged in the door opening direction by the tension based on the restoring force of the tension springs 11. Here, in the illustrated embodiment, not only the tension springs 11 and 11, but also the slide rails 9 and 9 are attached to the groove grooves 12 and 12 formed on the back surface of the door 8. The rails 9 and 9 can be attached not to the grooved grooves 12 and 12 but to the rear surface of the same.

【００３６】さらに、扉８の裏面における左右の下端部
近傍には、全請求項に共通してブラケット１６が突設さ
れ、これには夫々の支持アーム１４、１４の先端が回転
自在に枢着されているが、請求項１と請求項２にあって
は、当該各支持アーム１４、１４の基端が、扉取付体１
における左右両側板４、４の内面にあって、その中央部
より上端側に、回転軸１５により回転自在なるよう軸支
されている。従って、扉８は図１、図２に示した如く、
支持アーム１４、１４を半径として回転上昇することに
より開成され、また回転下降することで閉成可能となっ
ている。Further, brackets 16 are provided in the vicinity of the left and right lower end portions on the rear surface of the door 8 in common with all the claims, and the tips of the respective support arms 14, 14 are rotatably pivotally attached thereto. However, in the first and second aspects, the base ends of the respective support arms 14 and 14 are the door mounting body 1.
On the inner surfaces of the left and right side plates 4 and 4, the upper end side of the central portion is rotatably supported by the rotating shaft 15. Therefore, the door 8 is, as shown in FIGS.
The support arms 14 and 14 can be opened by rotating up with the radius, and can be closed by rotating down.

【００３７】また、請求項３乃至請求項６にあっては、
上記した支持アーム１４、１４の基端が、図３に明示の
如く上記した側板４、４の内面に本体１７ａを固定する
ことで配設したダンパー１７、１７にあって、その回転
軸１５に固定され、閉扉時にあってダンパー１７、１７
により扉荷重トルクに対する緩衝作用、すなわち、扉に
制動力を与えて、ゆるやかな閉扉作動が得られるように
してある。In the third to sixth aspects,
The base ends of the support arms 14, 14 are dampers 17, 17 arranged by fixing the main body 17a to the inner surfaces of the side plates 4, 4 as clearly shown in FIG. It is fixed and when the door is closed
Thus, a buffering action against the door load torque, that is, a braking force is applied to the door, so that a gentle door closing operation can be obtained.

【００３８】ここでダンパー１７、１７は、図２に示し
たように、水平である開成された状態の扉８が、矢印Ａ
方向へ回動下降して閉成される一方向への回動時にのみ
制動力が発揮され、これと反対方向への回動時、すなわ
ち図１に示す矢印Ｂ方向への回動上昇する開扉時には、
図示しないスプリングにより扉８を軽く回転させ得るよ
うに設定されている。As shown in FIG. 2, the dampers 17, 17 have horizontal doors 8 in the opened state, and are indicated by arrows A.
The braking force is exerted only when rotating in one direction, in which it is rotated downward in the direction and closed, and when rotating in the opposite direction, that is, in the direction of arrow B shown in FIG. At the door,
It is set so that the door 8 can be lightly rotated by a spring (not shown).

【００３９】さらに、請求項５と請求項６にあっては、
上記のダンパー１７、１７が、請求項３と請求項４の場
合と違って、以下に詳記する如く、コイルばね１８を付
設するようにしたダンパー１７、１７が採択されてい
る。すなわち、図４に例示のものは、前記の図３の如く
本体１７ａを側板４の内面に固定し、回転軸１５を支持
アーム１４に固定するのではなく、側板４に固定した基
板１９に回転軸１５を立設し、支持アーム１４、１４に
本体１７ａが連着されることで、回転軸１５の外周に設
けられた本体１７ａが回動するようにしてあり、図示例
では、上記コイルばね１８の一端１８ａを上記の基板１
９に、そして他端１８ｂを本体１７ａに夫々係止するよ
うにしている。Further, in claims 5 and 6,
Unlike the cases of claims 3 and 4, the dampers 17 and 17 adopt a coil spring 18 attached thereto, as described in detail below. That is, in the example illustrated in FIG. 4, the main body 17a is fixed to the inner surface of the side plate 4 and the rotary shaft 15 is not fixed to the support arm 14 as shown in FIG. 3, but is rotated to the substrate 19 fixed to the side plate 4. The shaft 15 is erected, and the main body 17a is connected to the support arms 14 and 14 so that the main body 17a provided on the outer periphery of the rotary shaft 15 is rotated. One end 18a of 18 is connected to the substrate 1
9 and the other end 18b is locked to the main body 17a.

【００４０】上記実施例のようにして、請求項５と請求
項６にあっては、結局コイルばね１８が扉閉成方向への
回転によって、巻き方向へねじ込まれるように、その端
部が回転軸１５側とダンパー１７、１７の本体１７ａと
に夫々掛装配設され、当該コイルばね１８による復原力
により、前記アウターレール９ｃと扉８とを上方へ付勢
させ得るようにしてある。As in the above embodiment, in the fifth and sixth aspects, the end portion of the coil spring 18 is rotated so that the coil spring 18 is screwed in the winding direction by the rotation in the door closing direction. The outer rail 9c and the door 8 can be urged upward by the restoring force of the coil spring 18, which are respectively mounted on the shaft 15 side and the main body 17a of the damper 17, 17.

【００４１】従って、上記図４の実施例によるときは、
水平に開成された状態にある扉８が、回動下降して閉成
される一方向への回動時にのみダンパー１７、１７とし
ての制動力が発揮されると共に、上記コイルばね１８が
巻き込み方向に、ねじられて行き、このときの抵抗力が
ダンパー１７、１７の本体１７ａに働き、このことによ
り得られたコイルばね１８の復原力が、扉を回動上昇さ
せる開扉時にあって、開扉力として作用することにな
る。Therefore, when the embodiment of FIG. 4 is used,
The braking force as the dampers 17, 17 is exerted only when the door 8 in the horizontally opened state is pivotally lowered to be closed, and the coil spring 18 is wound in the winding direction. Then, the resistance force at this time acts on the main body 17a of the dampers 17, 17, and the restoring force of the coil spring 18 obtained by this is opened at the time of opening the door to rotate and raise it. It will act as a door force.

【００４２】[0042]

【発明の効果】本発明は、以上説明したように構成され
ているので、請求項１によるときは、扉取付体に対して
扉が回動により開閉自在となるように、ヒンジと支持ア
ームによって枢支され、かつ、扉の開成後にあっては、
後退動作が可能にして、引き出し操作によりスライド自
在となるように、スライドレールを介して取付けられ、
かつ、開成された扉は、扉取付体の天板上に収置される
ことから、扉およびその付設機構等が被収納物の出し入
れの妨げとならない上、扉取付体内部の収納スペースを
広くとることもできる。Since the present invention is configured as described above, according to the first aspect, the hinge and the support arm are provided so that the door can be opened and closed by rotating the door mounting body. After being pivoted and after the door was opened,
It is mounted via a slide rail so that it can be moved backward and can be slid by pulling it out.
Moreover, since the opened door is stored on the top plate of the door mounting body, the door and its attached mechanism do not hinder loading and unloading of stored items, and the storage space inside the door mounting body is wide. It can also be taken.

【００４３】請求項２によるときは、上記請求項２の構
成にあって、引張りばねをヒンジと扉の凹溝条下端との
間に張設するようにしたので、引張りばねとスライドレ
ールとによって、扉は、これを、開成すると同時に後退
されて行くと共に、閉成時にあっては、扉荷重トルクに
対して引張りばねによる張力が働くことで、扉荷重トル
クに対して大きな力で支えるような必要なしに閉扉させ
得るようになり、かつ、この引張りばねは、扉の裏面に
縦設した凹溝条内に添設されていて、扉開成時にも扉か
ら離反することはないので、扉開成時の外観上の体裁が
良い上、扉開閉操作時に、引張りばね等に、誤って指先
等を挟むといった危険の発生を解消し得て安全である。According to a second aspect of the present invention, in the structure of the second aspect, the tension spring is stretched between the hinge and the lower end of the recessed groove of the door, so that the tension spring and the slide rail are used. The door is retracted at the same time that it is opened, and at the time of closing, the tension of the tension spring acts on the door load torque to support it with a large force against the door load torque. The door can be closed without need, and this tension spring is installed inside the recessed groove vertically provided on the back surface of the door and does not separate from the door even when the door is opened. The appearance is good at the time, and the danger of accidentally pinching a fingertip or the like with a tension spring or the like at the time of opening / closing the door is safe.

【００４４】さらに、請求項３によれば、請求項１の場
合における効果に加えて、ダンパーにより扉荷重トルク
に対する緩衝作用、すなわち、扉に対し制動力が発揮さ
れることから、扉の急激な閉成が阻止され、衝撃なく、
ゆるやかな閉扉動作が得られることになる。Further, according to claim 3, in addition to the effect in the case of claim 1, since the damper exerts a buffering effect on the door load torque, that is, the braking force is exerted on the door, the abruptness of the door is increased. Closure is blocked, without impact,
A gentle door closing operation will be obtained.

【００４５】請求項４の場合には、請求項２による効果
に加えて、引張りばねによる発条力と、ダンパーにより
扉荷重トルクに対する緩衝作用、すなわち、扉に対する
制動力とが得られることになるから、扉の急激な閉成が
阻止され、より衝撃のない、ゆるやかな閉扉動作が得ら
れる。In the case of claim 4, in addition to the effect of claim 2, since the spring force by the tension spring and the damper function for buffering the door load torque, that is, the braking force for the door are obtained. , The sudden closing of the door is prevented, and a gentle door closing operation with less impact is obtained.

【００４６】請求項５によるときは、前記請求項３の場
合における効果に加えて、コイルばねが扉閉成時にダン
パーによる制動力だけでなく、扉の閉成を抑制すること
になることから、より、緩徐な閉扉動作を行わせること
ができ、かつ、扉開成時にあっては、コイルばねの復原
力により扉を軽い力で開動させることが可能となる。According to claim 5, in addition to the effect in the case of claim 3, the coil spring suppresses not only the braking force by the damper when the door is closed but also the closing of the door. As a result, the door can be closed slowly, and at the time of opening the door, the restoring force of the coil spring can open the door with a light force.

【００４７】請求項６によるオーバーヘッドドアにあっ
ては、上記の請求項５による効果に加えて、請求項４に
おける引張りばねに基づく作用が発揮されることから、
コイルばねと引張りばねによる扉閉成時の、ゆるやかな
閉扉動作と、開扉時における、これまた、コイルばねと
引張りばねによる開扉動作に対する助勢効果により、扉
の開閉時における夫々の効果を助長することができる。In the overhead door according to claim 6, in addition to the effect according to claim 5, the action based on the tension spring according to claim 4 is exerted.
The coil spring and the tension spring accelerate the closing operation when the door is closed, and the coil spring and the tension spring assist the door opening operation when opening the door. can do.

[Brief description of drawings]

【図１】本発明に係るオーバーヘッドドアの一実施例に
よる扉閉成状態を示した縦断面図である。FIG. 1 is a vertical cross-sectional view showing a closed state of an overhead door according to an embodiment of the present invention.

【図２】図１の実施例につき開成した扉の収置状態を示
す図３のII−II線矢視断面図である。FIG. 2 is a sectional view taken along the line II-II of FIG. 3 showing a stored state of the door opened in the embodiment of FIG.

【図３】図２におけるIII −III 線矢視断面図である。3 is a sectional view taken along the line III-III in FIG.

【図４】本発明における請求項５と請求項６に係るコイ
ルばねを用いたダンパーの一部切欠側面図である。FIG. 4 is a partially cutaway side view of a damper using a coil spring according to claims 5 and 6 of the present invention.

【図５】従来のオーバーヘッドドアを示す縦断面図であ
る。FIG. 5 is a vertical sectional view showing a conventional overhead door.

【符号の説明】１扉取付体２天板４側板８扉９スライドレール９ｂボールリテーナー９ｃアウターレール９ｄインナーレール１０ヒンジ１１引張りばね１２凹溝条１４支持アーム１５回転軸１７ダンパー１８コイルばね１８ａコイルばねの端部１８ｂコイルばねの端部[Explanation of reference signs] 1 Door mount 2 Top plate 4 Side plate 8 Door 9 Slide rail 9b Ball retainer 9c Outer rail 9d Inner rail 10 Hinge 11 Tension spring 12 Recessed groove 14 Support arm 15 Rotating shaft 17 Damper 18 Coil spring 18a Coil End of spring 18b End of coil spring

Claims

[Claims]

1. A base end of a support arm is rotatably supported on an inner surface of a side plate of a door mounting body such as a cabinet so as to be rotatable.
The tip of the slide rail is pivotally attached in the vicinity of the lower end of the back surface of the door, and on the other hand, on the back surface of the door, a slide rail formed by slidably engaging a long outer rail and a short inner rail via a ball retainer. , The upper rail of the inner rail is arranged so that the outer rail is vertically long, and the door can be opened and closed by rotating and sliding in the vertical direction and can be stored on the top plate of the door mounting body. However, the overhead door is characterized in that it is pivotally attached to the front edge of the top plate of the door mount through a hinge.

2. A base end of a support arm is rotatably supported on an inner surface of a side plate of a door mounting body such as a cabinet,
The tip of the slide rail is pivotally attached in the vicinity of the lower end of the back surface of the door, and on the other hand, on the back surface of the door, a slide rail formed by slidably engaging a long outer rail and a short inner rail via a ball retainer. , The upper rail of the inner rail is arranged so that the outer rail is vertically long, and the door can be opened and closed by rotating and sliding in the vertical direction and can be stored on the top plate of the door mounting body. Is pivotally attached to the front edge of the top plate of the door mounting body via a hinge, and a recess groove is formed in the back surface of the door in the up-down direction so that a tension spring is provided in the recess groove. The respective end portions are respectively mounted and stretched on the upper end of the hinge and the lower end of the groove, and the outer rail and the door are controlled by the tension spring with respect to the inner rail, and the downward movement thereof is controlled. The upward movement was urged Overhead door which is characterized.

3. A damper is fixed to an inner surface of a side plate of a door mounting body such as a cabinet, a base end of a support arm is fixed to a rotation shaft of the damper, and a tip of the damper is pivotally attached to a vicinity of a lower end of a back surface of the door. On the other hand, on the back surface of the door, a slide rail in which a long outer rail and a short inner rail are slidably engaged via a ball retainer, the outer rail is provided side by side in the vertical direction, The upper and lower ends of the inner rails are hinged to the top edge of the door mount so that the door can be opened and closed vertically by rotating and sliding and can be stored on the top plate of the door mount. An overhead door characterized by being pivotally attached through.

4. A damper is fixed to an inner surface of a side plate of a door mounting body such as a cabinet, a base end of a support arm is fixed to a rotation shaft of the damper, and a tip of the damper is pivotally attached to a vicinity of a lower end of a back surface of the door. On the other hand, on the back surface of the door, a slide rail in which a long outer rail and a short inner rail are slidably engaged via a ball retainer, the outer rail is provided side by side in the vertical direction, The upper end of the inner rail is hinged to the top edge of the door mount so that it can be opened and closed in the vertical direction by turning and sliding and can be stored on the top plate of the door mount. In addition to being pivotally attached, a recess groove is provided on the back surface of the door in the vertical direction so that a tension spring is provided in the recess groove, and each end of the tension spring has an upper end of the hinge and a recess groove. It is hung and stretched on the bottom of the article, An overhead door characterized in that the tension spring controls the downward movement of the outer rail and the door with respect to the inner rail and urges the upward movement thereof.

5. A damper is fixed to an inner surface of a side plate of a door mounting body such as a cabinet, a base end of a support arm is fixed to a rotary shaft of the damper, and a tip end of the damper is pivotally attached to a vicinity of a lower end portion of a back surface of the door. On the other hand, on the back side of the door, a slide rail in which a long outer rail and a short inner rail are slidably engaged via a ball retainer, the outer rail is provided side by side in the vertical direction, The top end of the inner rail is hinged to the front edge of the top plate of the door mount so that the door can be opened and closed in the vertical direction by turning and sliding and can be stored on the top plate of the door mount. Further, a coil spring is attached to the damper so that its ends are respectively hooked on the rotary shaft side and the damper body side so that the coil spring can be screwed in the winding direction by rotating in the door closing direction. Installed An overhead door characterized in that the outer rail and the door are biased upward with respect to the inner rail by a restoring force of the coil spring.

6. A damper is fixed to an inner surface of a side plate of a door mounting body such as a cabinet, a base end of a support arm is fixed to a rotary shaft of the damper, and a tip of the damper is pivotally attached to a vicinity of a lower end of a rear surface of the door. On the other hand, on the back side of the door, a slide rail in which a long outer rail and a short inner rail are slidably engaged via a ball retainer, the outer rail is provided side by side in the vertical direction, The top end of the inner rail is hinged to the front edge of the top plate of the door mount so that the door can be opened and closed in the vertical direction by turning and sliding and can be stored on the top plate of the door mount. And a recess groove is provided on the back surface of the door in the up-down direction, and a tension spring is provided in the recess groove, each end of which is respectively the upper end of the hinge and the recess. The bottom of the groove and the The tension spring controls the downward movement of the outer rail and the door with respect to the inner rail and urges the upward movement thereof, and further, a coil spring is attached to the damper to close the door. The ends are mounted on the rotating shaft side and the damper main body side, respectively, so that they can be screwed in the winding direction when rotated in the normal direction. An overhead door characterized in that the outer rail and the door are biased upward.