JPH0355375A - Door closer - Google Patents

Door closer

Info

Publication number
JPH0355375A
JPH0355375A JP18958889A JP18958889A JPH0355375A JP H0355375 A JPH0355375 A JP H0355375A JP 18958889 A JP18958889 A JP 18958889A JP 18958889 A JP18958889 A JP 18958889A JP H0355375 A JPH0355375 A JP H0355375A
Authority
JP
Japan
Prior art keywords
cam
door
main shaft
shaft
degrees
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP18958889A
Other languages
Japanese (ja)
Other versions
JP2758933B2 (en
Inventor
Hiroyuki Akiyama
裕行 秋山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ryobi Ltd
Original Assignee
Ryobi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ryobi Ltd filed Critical Ryobi Ltd
Priority to JP18958889A priority Critical patent/JP2758933B2/en
Priority to EP19900307621 priority patent/EP0409485B1/en
Priority to DE1990601652 priority patent/DE69001652T2/en
Publication of JPH0355375A publication Critical patent/JPH0355375A/en
Application granted granted Critical
Publication of JP2758933B2 publication Critical patent/JP2758933B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/104—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with cam-and-slide transmission between driving shaft and piston within the closer housing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F3/225—Additional arrangements for closers, e.g. for holding the wing in opened or other position mounted at the bottom of wings, e.g. details related to seals, covers, connections to the wings, embedding in the floor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40—Mounting location; Visibility of the elements
    • E05Y2600/41—Concealed
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40—Mounting location; Visibility of the elements
    • E05Y2600/452—Mounting location; Visibility of the elements in or on the floor or wall
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

PURPOSE:To make automatic closing of a door surely feasible by constructing the title device in a structure wherein a cam of a main shaft and a roller separate from each other while a cam of a counter shaft and a roller contact each other as the angle of opening of the door becomes larger. CONSTITUTION:As a door is opened counterclockwise at an angle of about 5 degrees, a main shaft 2 turns counterclockwise and a counter shaft 5 turns clockwise at an angle of about 2.9 degrees. A conversion curve 3c on the upper side of a cam 3 of the main shaft 2 pushes a roller C1 leftward, and a sliding plate 10 is moved leftward thereby, making a piston 14 move leftward. As the door is opened clockwise at an angle of about 190 degrees, a cam 6 of the counter shaft 5 turns at an angle of about 111.7 degrees, making a loose curve 6a of the cam 6 engaged with a roller C4, and the piston 14 is moved leftward thereby. When the door is set free, the counter shaft 5 turns in the opposite direction being urged by restoring force of a returning spring 13 and the main shaft 2 turns in the direction opposite to the turning of the counter shaft 5 and a force is given thereby to the door in the closing direction.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、ドアのヒンジ部分に取付けられドアの開閉を
スムースに行うためのドアクローザに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a door closer that is attached to a hinge portion of a door and is used to smoothly open and close the door.

（従来の技術〕 一般に、ドアのヒンジ部分に取付けられるドアクローザ
は、ドアのヒンジ部分に連結される主軸を有し、この主
軸にはカムが一体的に取付けらｒ，ている。このカムに
対向してカムフォロワーが設けられ、このカムフォロワ
ーはケーシング内に左右に往復動ずるように設けられた
摺動板に取付けられ、この摺動板はピストンを保持した
連結棒に連結されている。前記ピストンは円筒状のシリ
ンダ一部分に収納され、このシリンダ一部分には復帰用
ばねと作動油が収納されている。そして、ドアが回転す
ると前記主軸も回転し、この主軸の回転により前記カム
が回転し、このカムの回転がカムフォロワーを介して連
結棒の直線運動に変換され、これによってピストンが前
記復帰用ばねを圧縮しつつ直線的に移動する。(Prior Art) Generally, a door closer attached to the hinge part of a door has a main shaft connected to the hinge part of the door, and a cam is integrally attached to this main shaft. A cam follower is provided, and this cam follower is attached to a sliding plate provided in the casing so as to be able to reciprocate from side to side, and this sliding plate is connected to a connecting rod that holds a piston. The piston is housed in a part of a cylindrical cylinder, and a return spring and hydraulic oil are housed in this part of the cylinder.When the door rotates, the main shaft also rotates, and the rotation of the main shaft rotates the cam. The rotation of the cam is converted into a linear movement of the connecting rod through the cam follower, and thereby the piston moves linearly while compressing the return spring.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

ところが、従来のドアクローザにおいては、左右両開き
として使用する場合に、ドアを１８０°以上回転できる
が、１８０°以上主軸が回転し、これに伴ってカムが回
転すると前記復帰用ばねの復帰力によって主軸は同一回
転方向にさらに回転しようとする。すなわち、ドアが開
いた方向とは逆方向に復帰用ばねの復帰力が作用せずド
アがさらに開《方向に復帰用ばねの復帰力が作用してし
まう。したがって、かかるタイプの従来のドアクローザ
においては、ドアを１８０°以上開いた場合には、自動
的にドアを閉めることができないという問題がある。However, in conventional door closers, when used as a double-sided door, the door can be rotated over 180 degrees, but when the main shaft rotates over 180 degrees and the cam rotates accordingly, the return force of the return spring causes the main shaft to rotate. tries to rotate further in the same rotational direction. That is, the return force of the return spring does not act in the opposite direction to the direction in which the door is opened, and the return force of the return spring acts in the direction in which the door is further opened. Therefore, in this type of conventional door closer, there is a problem that the door cannot be automatically closed when the door is opened more than 180 degrees.

従来のドアクローザの中には、１８０°以上ドアを開い
た場合でもドアを閉じる方向に復帰力が働くタイプのも
のが存在するが、その場合の復帰力は一方向のみしか作
用せず、かかるドアクローザは逆方向に開くドアの場合
には使用できない。Some conventional door closers have a return force that acts in the direction of closing the door even when the door is opened more than 180 degrees, but in that case, the return force only acts in one direction, cannot be used for doors that open in the opposite direction.

したがって、このタイプのドアクローザはドアの開く方
向によって使用すべきドアクローザが限定され、逆方向
に開くドアの場合にはその方向に復帰力が働くようなド
アクローザを準備しなければれならない。すなわち、両
開きと片開きの左右で別々のドアクローザを製造したり
、あるいは在庫しておく必要があり、コストアップの要
因となっていた。Therefore, in this type of door closer, the door closer to be used is limited depending on the direction in which the door opens, and in the case of a door that opens in the opposite direction, it is necessary to prepare a door closer that applies a return force in that direction. That is, it is necessary to manufacture separate door closers for the left and right sides of double-door and single-door doors, or to keep them in stock, which increases costs.

本発明は、かかる点に鑑み、ドアをいずれの方向に開い
たεしてもドアを閉じる方向に必ずドアを閉めようとす
る力が作用し、一種類のドアクロ−ザによって異なる方
向に開くドアにも適用できるようなドアクローザを提供
することを目的とする。In view of this, the present invention provides a door closer that a force that tends to close the door always acts in the direction of closing the door no matter which direction the door is opened. The purpose of the present invention is to provide a door closer that can also be applied to.

〔課題を解決するための手段〕[Means to solve the problem]

そこで、本発明はドアの回動に伴って回動する主軸にカ
ムを取付け、このカムの回動によりビス１・ンを保持し
ている連結部材を直線移動せしめ、前記ピストンの直線
移動により復帰用スプリングに復帰力を蓄勢するように
したドアクローザにおいて、前記主軸に隣接してカムを
備えた副軸を設け、この主軸と副袖とを互いにギアによ
り連結し、主軸ど副軸とのギヤ比を１よりも小さくし、
主軸が１　８　０’以上回動しても副軸は１８０°より
も小さな角度しか回転しないようにし、前記主軸、副軸
のそれぞれのカムに対してカムフォロワーを設け、これ
らのカムフォロワーを前記連結体に連結された摺動板に
取付け、これらのカムフォロワーは、ドアの回転角度が
小さいきには、主軸のカムとこれと協働するカムフォロ
ワーとが接触し副軸のカムとこれと協働するカムフォロ
ワーとが離れ、ドアの回転角度が大きくなると、主軸の
カムとカムフォロワーが離れ、副軸のカムとカムフォロ
ワーとが接触する位置関係に取付けられているようにし
た。Therefore, in the present invention, a cam is attached to the main shaft that rotates with the rotation of the door, and the rotation of this cam causes the connecting member holding the screw 1 to move linearly, and returns by the linear movement of the piston. In a door closer in which a return force is stored in a spring, a subshaft equipped with a cam is provided adjacent to the main shaft, the main shaft and the sub sleeve are connected to each other by a gear, and the gear between the main shaft and the subshaft is connected. Make the ratio smaller than 1,
Even if the main shaft rotates more than 180', the subshaft only rotates by an angle smaller than 180°, and a cam follower is provided for each cam of the main shaft and subshaft, and these cam followers are connected to the cams of the main shaft and the subshaft. These cam followers are attached to a sliding plate connected to the coupling body, and when the rotation angle of the door is small, the cam on the main shaft and the cam follower that cooperates with this come into contact, and the cam on the sub-shaft and this When the cooperating cam follower separates and the rotation angle of the door increases, the main shaft cam and cam follower separate, and the sub-shaft cam and cam follower are installed in a positional relationship in which they come into contact.

〔作用〕[Effect]

ドアの回動に伴って回動する主軸に副軸を隣接せしめ、
前記主軸と副軸とを互いにギヤにより連結し、主軸と副
軸とのギヤ比を１よりも小さくし、主軸が１８０°以上
回動じても副軸はそれよりも小さな角度しか回転しない
ようにする。前記主軸及び副軸に対向してカムフォロワ
ーをそれぞれ設け、このカムフォロワーを摺動板に取付
け、この摺動板を連結棒の一端に取付け、この連結棒の
池端をピストンに取付ける。前記主軸の回動角度が小さ
いときは主軸のカムとこれに対するカムフォロワーが接
触し、副軸のカムとこれに対するカムフォロワーとは離
れている。また、前記主軸の回動角度が大きくなると主
軸のカムとこれに対するカムフォロワーが離れて副軸の
カムとこれに対するカムフォロワーとが接触する。前記
主軸及び副軸に取付けられたギヤのギヤ比の関係によっ
て主軸が１８０６よりも大きく回動しても副軸は１８０
０以下しか回転せず、ドアの回動角度が大きくなった場
合には副軸に取付けられたカムとこれに対向したカムフ
ォロヮーとによって連結棒を介してピストンを移動せし
め、このときには主軸に取付けられたカムとこれに対向
したカムフォロワーとはピストンの移動に対して機能し
ない。これによって、ドアが１８０°よりも大きく回転
してＣ副軸は１８０°よりも小さな角度しか回動せず、
ドアを放したときにはドアを閉めようとする復帰力がド
アに加えられる。A sub-shaft is placed adjacent to the main shaft that rotates as the door rotates,
The main shaft and the sub-shaft are connected to each other by a gear, and the gear ratio between the main shaft and the sub-shaft is smaller than 1, so that even if the main shaft rotates 180 degrees or more, the sub-shaft only rotates by an angle smaller than that. do. A cam follower is provided opposite the main shaft and the sub-shaft, the cam follower is attached to a sliding plate, the sliding plate is attached to one end of a connecting rod, and the pond end of this connecting rod is attached to the piston. When the rotation angle of the main shaft is small, the cam of the main shaft and its corresponding cam follower are in contact, and the cam of the sub-shaft and its corresponding cam follower are separated. Further, when the rotation angle of the main shaft increases, the cam of the main shaft and the cam follower thereof are separated, and the cam of the sub-shaft and the cam follower thereof come into contact. Due to the relationship between the gear ratios of the gears attached to the main shaft and the subshaft, even if the main shaft rotates more than 1806, the subshaft will rotate by 180°.
If the door rotates less than 0 and the rotation angle of the door becomes large, the piston is moved via the connecting rod by the cam attached to the sub-shaft and the cam follower opposed to it; The cam and the cam follower facing it do not function with respect to the movement of the piston. As a result, the door rotates by more than 180°, and the C minor shaft only rotates by an angle smaller than 180°.
When the door is released, a restoring force is applied to the door to try to close it.

〔実施例〕〔Example〕

以下、図面を参照して本発明の一実施例について説明す
る。An embodiment of the present invention will be described below with reference to the drawings.

第１図乃至第３図において、本発明のドアクローザＤは
ケーシング１を有し、このケーシング１は図上左側に位
置した箱型の駆動部１ａと、駆動部１ａに連結されたシ
リンダ一部１ｂとからなる。1 to 3, the door closer D of the present invention has a casing 1, and this casing 1 includes a box-shaped drive part 1a located on the left side of the figure, and a cylinder part 1b connected to the drive part 1a. It consists of

前記駆動部１ａには回転するドアのヒンジ部に連結され
る主軸２が設けられ、この主ＩｌｌＩ２の中央部分には
略円形をなすカム３が一体的に取付けられている。この
カム３の下方には主軸ギャ４が固着されている。前記主
軸２に対して副軸５が隣接して設けられ、これら主軸２
及び副軸５はドアクローザの長手方向中心軸上に所定間
隔だけ離れて設けられている。前記副軸５の中央部分に
は前記主軸のカム３と同一平面上に木の葉状のカム６が
設けられ、このカム６の下方には副軸ギャ７が設けられ
ている。この副軸ギャ７は前記主軸ギャ４と噛合し、こ
の主軸ギャ４と副軸ギャ７とのギヤ比が主軸２が１８０
°以上回動じて副軸５の回動角度が１８０°以下となる
ように１よりも小さな値、例えば１／１．７となってい
る。前記駆動部１ａは蓋体３０によって閉塞され、この
蓋体３０にはベアリング２０ａが設けられ、このベアリ
ング２Ｏａ内に主軸２が回転自在に支持され、主軸２の
下端部はケーシング１の下面に取付けられたベアリング
２０ｂによって回転自在に支持されている。また、前記
副軸５も蓋体３０の内面に取付けられたべアリング８ａ
にその上端が回転自在に支持されているとともに、その
下端がケーシングの下面に取付けられたベアリング８ｂ
に回転自在に支持されている。前記主軸２及び副＄１１
５のカム３及び６の上下は摺動板１０によって摺動自在
にガイドされ、この摺動板１０．１０間にはカムフォロ
ワーとしてのローラｃ　　，ｃ　　及びｃ，ｃ４１　　
　　２　　　　　　３ が回転自在に支持されている。前記ローラＣｌ，Ｃ２は
ケーシングーの幅方向に離間して設けられ、これらロー
ラＣ，Ｃ２は前記主軸２のカム３と１ 協働する。また、前記ローラＣ　，Ｃ　はケーシ３４ ング１の幅方向に離間して設けられ、これらローラＣ　
　，Ｃ　４は副軸５に取付けられたカム６と協３ 働する。なお、各カムフォロワーは、主軸２の回転角度
が小さいときには、カム６がカムフォロワーＣ，Ｃ４か
ら離れている状態においてカム３３ がカムフォロヮ一〇　　，Ｃ２に接触し、主軸２の１ 回転角度が大きくなると、逆にカム３がカムフォロワー
Ｃ　　−Ｃ２から離れている状態において力ｌ ム６がカムフォロワ一〇　，Ｃ　に接触するよう３４ な位置関係で摺動板１０上に取付けられている。The driving portion 1a is provided with a main shaft 2 connected to a hinge portion of a rotating door, and a substantially circular cam 3 is integrally attached to the center portion of the main shaft 2. A main shaft gear 4 is fixed below this cam 3. A sub-shaft 5 is provided adjacent to the main shaft 2, and these main shafts 2
and the sub-shaft 5 are provided at a predetermined interval on the longitudinal center axis of the door closer. A leaf-shaped cam 6 is provided at the center of the subshaft 5 on the same plane as the cam 3 of the main shaft, and a subshaft gear 7 is provided below the cam 6. The subshaft gear 7 meshes with the main shaft gear 4, and the gear ratio between the main shaft gear 4 and the subshaft gear 7 is 180.
The value is set to be smaller than 1, for example 1/1.7, so that the rotation angle of the secondary shaft 5 becomes 180° or less when the subshaft 5 rotates by more than 1°. The drive unit 1a is closed by a lid 30, a bearing 20a is provided on the lid 30, a main shaft 2 is rotatably supported in the bearing 2Oa, and the lower end of the main shaft 2 is attached to the lower surface of the casing 1. It is rotatably supported by a bearing 20b. Further, the countershaft 5 also has a bearing 8a attached to the inner surface of the lid body 30.
The upper end of the bearing 8b is rotatably supported, and the lower end of the bearing 8b is attached to the lower surface of the casing.
is rotatably supported. Said main shaft 2 and sub $11
The upper and lower parts of the cams 3 and 6 of No. 5 are slidably guided by a sliding plate 10, and between the sliding plates 10 and 10 are rollers c, c and c, c41 as cam followers.
2 3 is rotatably supported. The rollers Cl and C2 are provided apart from each other in the width direction of the casing, and these rollers C and C2 cooperate with the cam 3 of the main shaft 2. Further, the rollers C and C are provided spaced apart in the width direction of the casing 1, and these rollers C
, C4 cooperate with a cam 6 attached to the subshaft 5. In each cam follower, when the rotation angle of the main shaft 2 is small, the cam 33 contacts the cam followers C, C2 while the cam 6 is apart from the cam followers C, C4, and the rotation angle of the main shaft 2 is large. Then, conversely, when the cam 3 is apart from the cam follower C-C2, the force l is mounted on the sliding plate 10 in such a positional relationship that the force 6 comes into contact with the cam followers 10 and C.

前記摺動板１０には主軸２用の長穴１１とこの長穴１１
に離間して設けられた副軸５用の長穴１２が形成されて
いる。これら長穴１１．１２は前記摺動板１０が左右に
摺動ずるときのガイド穴として作用する。前記摺動板１
０のシリンダ一部１ｂ側には確動ローラＰが設けられ、
この確動ローラＰによって風等によりドアが急激にしま
ろうと１一たときにカム６の回動を押さえる。これら摺
動板１０は連結棒１２の一端に固着され、この連結棒１
２の他端はピン１５を介してピストン１４に結合されて
いる。前記シリンダ一部１ｂ内には復帰用スプリング１
３が収納され、この復帰用スプリング１３はシリンダ一
部ｌｂの図上左内壁とピストンｌ４間に配設され、ピス
トン１４が左右に摺動したときに伸縮する。このシリン
ダー１１１ｂ内には復帰用スプリング１３の他に作動油
が収納され、この作動油はピストン１４の左右動に伴っ
てピストン１４の両側に形成される２つの圧力室Ａ，Ｂ
間を移動する。前記シリンダ一部１ｂの先端部分はエン
ドプラグ１６によって閉塞され（第３図）、このエンド
プラグ１６の近傍からケーシングの肉厚内を連通路１８
が伸び、この連通路１８はピストン１４の圧力室Ａ側に
開口している。The sliding plate 10 has an elongated hole 11 for the main shaft 2 and this elongated hole 11.
An elongated hole 12 for the counter shaft 5 is formed spaced apart from each other. These elongated holes 11 and 12 act as guide holes when the sliding plate 10 slides left and right. Said sliding plate 1
A positive roller P is provided on the cylinder part 1b side of 0,
This positive roller P prevents the rotation of the cam 6 when the door is suddenly closed due to wind or the like. These sliding plates 10 are fixed to one end of a connecting rod 12.
The other end of 2 is connected to the piston 14 via a pin 15. A return spring 1 is provided in the cylinder part 1b.
The return spring 13 is disposed between the left inner wall of the cylinder part lb in the figure and the piston l4, and expands and contracts when the piston 14 slides left and right. In addition to the return spring 13, hydraulic oil is stored in this cylinder 111b, and this hydraulic oil is distributed between two pressure chambers A and B formed on both sides of the piston 14 as the piston 14 moves left and right.
move between The tip of the cylinder part 1b is closed by an end plug 16 (FIG. 3), and a communication path 18 is opened from the vicinity of the end plug 16 through the thickness of the casing.
extends, and this communication passage 18 opens on the pressure chamber A side of the piston 14.

前記ピストン１４の中心部には通路２１が設けられ、こ
の通路２１にはボール弁１７が装着され、このボール弁
１７はピストン１４がドアの開放に伴って復帰用スプリ
ング１３を圧縮して図上左側に移動したときに左側の圧
力室Ａ内の作動油をピストン１４の右側の圧力室Ｂ内に
移動するためのものであり、逆にピストン１４が復帰用
スプリング１３の復帰力によって図上右側方向へ復帰運
動するときには前記ボール弁１７は逆止弁として作用し
、このときには前記圧力室Ｂ内の作動油は前記連通路１
８を通って左側圧力室Ａ内に流入し、このようにしてピ
ストン１４のスムースな左右運動が確保される。前記主
軸２に取付けられたカム３の形状は第３図に図示される
ように図上左側に位置する小径部３ｂとこの小径部３ｂ
よりも大きな角度範囲を占める大径部３ａとこれら小径
部３ｂと大径部３ａの隣接部分に形成される変換曲線部
３ｃ，３ｃからなる。また、副軸５に取付けられている
木の葉状のカム６は、カム６の長手方向中心軸に対して
左右対称に形或されている緩曲線部６ａ，６ａと、この
緩曲線部６ａとは反対側に形威された曲率半径の小さな
小径部６Ｃと、この小径部６ｃと前記２つの緩曲線部５
ａ，５ａ間に形成される変換曲線部６ｂ，６ｂからなっ
ている。A passage 21 is provided in the center of the piston 14, and a ball valve 17 is installed in this passage 21, and the ball valve 17 is operated by the piston 14 compressing the return spring 13 as the door is opened. This is to move the hydraulic oil in the pressure chamber A on the left side into the pressure chamber B on the right side of the piston 14 when the piston 14 moves to the left side. When the ball valve 17 moves back in the direction, the ball valve 17 acts as a check valve, and at this time, the hydraulic oil in the pressure chamber B flows through the communication path 1.
8 into the left pressure chamber A, thus ensuring smooth left-right movement of the piston 14. As shown in FIG. 3, the shape of the cam 3 attached to the main shaft 2 includes a small diameter portion 3b located on the left side of the figure;
It consists of a large diameter portion 3a that occupies a larger angular range, and conversion curved portions 3c, 3c formed adjacent to these small diameter portions 3b and the large diameter portion 3a. In addition, the leaf-shaped cam 6 attached to the subshaft 5 has gently curved portions 6a, 6a that are symmetrically shaped with respect to the central axis in the longitudinal direction of the cam 6. A small diameter portion 6C with a small radius of curvature formed on the opposite side, and this small diameter portion 6c and the two gently curved portions 5.
It consists of conversion curve parts 6b and 6b formed between a and 5a.

次に作用について説明する。Next, the effect will be explained.

第１図乃至第３図はドアが完全に閉じているとき、すな
わちドアの回転角度が０６のときのドアクローザの状態
を示している。このときには主軸２のカム３の変換曲線
部３ｃ，３ｃは摺動板１０上に取付けられたカムフォロ
ワーとしてのローラＣｌ，Ｃ２にそれぞれ係合している
。また、このとき副軸５の木の葉状のカム６の変換曲線
部は前記カムフォロワーとしてのローラＣ　，Ｃ　に緩
３４ 《接している。そして、このときには前記ピスＩ・ン１
４はシリンダ一部１ｂのエンドプラグ１６に隣接した位
置にある。したがって、前記摺動板１０も最も右側に偏
った位置にあり、主軸２及び副軸５は摺動板１０に形成
された長穴１１及び１２の図上左側端部近傍に位置して
いる。1 to 3 show the state of the door closer when the door is completely closed, that is, when the rotation angle of the door is 06. At this time, the conversion curved portions 3c, 3c of the cam 3 of the main shaft 2 are respectively engaged with rollers Cl, C2 as cam followers mounted on the sliding plate 10. Further, at this time, the conversion curve portion of the leaf-shaped cam 6 of the subshaft 5 is in gentle contact with the rollers C and C as the cam followers. At this time, the piston I/N1
4 is located adjacent to the end plug 16 of the cylinder part 1b. Therefore, the sliding plate 10 is also located at the farthest right position, and the main shaft 2 and the sub-shaft 5 are located near the left end of the elongated holes 11 and 12 formed in the sliding plate 10 in the drawing.

ドアが完全に閉じられている状態から反時計方向に５°
回動したときの状態が＄４図に示されている。すなわち
、主軸２が図上皮時計方向に５６回転しこれに伴ってギ
ヤ比が１／１．７であるので、副軸５は図上時計方向に
２．９６回動ずる。5° counterclockwise from fully closed door
The state when rotated is shown in Figure $4. That is, since the main shaft 2 rotates 56 times clockwise in the figure and the gear ratio is 1/1.7, the subshaft 5 rotates 2.96 times clockwise in the figure.

このときには主軸２のカム３の上側変換曲線部３Ｃがこ
れに協働するローラＣｌを図上左側に押し、これら変換
曲線部３ＣとローラＣ１との協働によって前記摺動板１
０は図上左側に移動し、これに伴って前記ピストン１４
も左側に移動する。At this time, the upper conversion curve section 3C of the cam 3 of the main shaft 2 pushes the roller Cl that cooperates with it to the left side in the figure, and the cooperation between the conversion curve section 3C and the roller C1 moves the sliding plate 1.
0 moves to the left in the figure, and along with this, the piston 14
also moves to the left.

このとき前記副軸５のカム６の回動は摺動板１０の左方
向への移動には全く寄与しない。At this time, the rotation of the cam 6 of the subshaft 5 does not contribute to the leftward movement of the sliding plate 10 at all.

次いで、ドアを２０°位開放したときには第５図に示す
ように、主軸２が反時計方向に２０°回転し、これに対
して副軸５が時計方向に１１．７°回動ずる。このとき
には主軸のカム３とこれらと協働するローラＣ　，Ｃ　
とは協働せｌ２ ずローラＣ　，Ｃ２はカム３のカム面から離間し１ てしまう。これに対して主軸５のカム６の下側の変換曲
線部６ｂがこれに対向するローラＣ４と協働し、この変
換曲線部６ｂとローラＣ４との協働によってのみ前記ピ
ストン１４は図上左側に動かされてこのときに復帰用ス
プリング１３は圧縮される。すなわち、ドアの開放角度
が２０°近傍に至ると主軸２のカム３とこれらと協働す
るカムフォロワーとしてのローラＣ，Ｃ２は摺動板１０
，１ 連結棒１２及びピストン１４の直線運動には全く寄与せ
ず、副軸５に取付けられたカム６とこれに対向して設け
られたローラＣ４とがピストン１４の直線運動に寄与し
ている。Next, when the door is opened by about 20 degrees, the main shaft 2 rotates counterclockwise by 20 degrees, and the subshaft 5 rotates clockwise by 11.7 degrees, as shown in FIG. At this time, the cam 3 on the main shaft and the rollers C, C that cooperate with these cams
The rollers C and C2 do not cooperate with each other, and the rollers C and C2 are separated from the cam surface of the cam 3. On the other hand, the conversion curve section 6b on the lower side of the cam 6 of the main shaft 5 cooperates with the roller C4 opposite thereto, and only by the cooperation between the conversion curve section 6b and the roller C4, the piston 14 is moved to the left side in the figure. At this time, the return spring 13 is compressed. That is, when the opening angle of the door reaches around 20 degrees, the cam 3 of the main shaft 2 and the rollers C and C2 as cam followers that cooperate with these move toward the sliding plate 10.
, 1 It does not contribute to the linear movement of the connecting rod 12 and the piston 14 at all, but the cam 6 attached to the subshaft 5 and the roller C4 provided opposite thereto contribute to the linear movement of the piston 14. .

更に、ドアを反時計方向に９０°回転したとするとその
状況は第６図のようになり、このときにも図上下側のロ
ーラＣ４とこれに対向するカム面であるカム６の変換曲
線部６ｂとの協働作用によってのみ前記ピストン１４は
図上左側方向に移動される。Furthermore, if the door is rotated 90 degrees counterclockwise, the situation will be as shown in FIG. The piston 14 is moved leftward in the drawing only by the cooperation with the piston 6b.

同様に第７図を示すようにドアを時計方向に１８０°開
放した場合には、前記副軸５は時計方向へ１０５．８°
回動じ、このときにはカム６の緩曲線部６ａとカムフォ
ロワーとしてのローラＣ４との係合のみが前記ピストン
１４の図上左側方向への移動に寄与する。さらに、第８
図に示すようにドアを時計方向に１９０°開放したとす
るとこのときには副軸５は時計方向に１１１．７°回動
じ、このときにも第７図と同様にローラＣ４と緩曲線部
６ａとがピストン１４の直線運動に寄与する。Similarly, when the door is opened 180 degrees clockwise as shown in FIG.
At this time, only the engagement between the gently curved portion 6a of the cam 6 and the roller C4 serving as a cam follower contributes to the movement of the piston 14 to the left in the figure. Furthermore, the eighth
As shown in the figure, if the door is opened 190° clockwise, the subshaft 5 rotates 111.7° clockwise, and at this time, as in FIG. 7, the roller C4 and the gently curved portion 6a contributes to the linear motion of the piston 14.

このようにドアを１８０°以上に開放したとしても、こ
のときには副軸５に取付けられたカム６は１８０°以下
しか回動せず、したがって副軸に取付けられたカム６は
さらに回動することができ、この状態でドアを放した場
合には復帰用ばね１３の復帰力によって副軸５が反対方
向に回動し、これに伴って副軸の回動方向とは反対方向
に主軸が回転し、結局ドアは閉じる方向に力が加えられ
ることになる。Even if the door is opened more than 180 degrees in this way, the cam 6 attached to the subshaft 5 will only rotate 180 degrees or less at this time, and therefore the cam 6 attached to the subshaft will not rotate further. When the door is released in this state, the subshaft 5 rotates in the opposite direction due to the return force of the return spring 13, and the main shaft rotates in the opposite direction to the rotation direction of the subshaft. However, in the end, force is applied to the door in the direction of closing it.

なお、本実施例においてはドアを反時計方向に回動した
場合について説明したが、本発明のドアクローザにおい
ては、カム３．６の形状が対称構造をなし、しかもドア
クローザの長手方向軸に対して対称位置にそれぞれのカ
ムフオロワ−０１，Ｃ，Ｃ，Ｃ４が設けられているので
、ドアを２３ 時計方向に回動した場合副軸５が反対方向に回転し、こ
の場合にはローラＣ３とこれに対向するカム６のカムの
緩曲線部６ａとが協働して前記ピストン１４の直線運動
に寄与することとな１る。したがって、ドアをいずれの
方向に１８０°以上回動した場合でも常にドアには復帰
力が加わり、ドアを放した場合にはドアが自動的に閉じ
られることとなる。In this embodiment, the case where the door is rotated counterclockwise has been described, but in the door closer of the present invention, the shape of the cam 3.6 has a symmetrical structure, and moreover, the shape of the cam 3.6 is symmetrical with respect to the longitudinal axis of the door closer. Since the respective cam followers 01, C, C, and C4 are provided in symmetrical positions, when the door is rotated clockwise, the secondary shaft 5 rotates in the opposite direction, and in this case, the roller C3 and the cam followers 5 rotate in the opposite direction. The gently curved portions 6a of the opposing cams 6 cooperate to contribute to the linear movement of the piston 14. Therefore, even if the door is rotated by 180 degrees or more in any direction, a return force is always applied to the door, and when the door is released, the door is automatically closed.

また、カム６に切欠きを設け、この切欠きをカムフ中ロ
ワ一〇　又はＣ４と係合せしめれば、ド３ アにストップ機能を付加できる。Furthermore, by providing a notch in the cam 6 and engaging this notch with the cam flange center lower 10 or C4, a stop function can be added to the door 3.

〔発明の効果〕〔Effect of the invention〕

本発明は、以上のように構成したので、いずれの方向に
ドアを１８０°以上回転した場合においても復帰力がド
アに作用し、ドアは自動的に確実に閉じられるという効
果を奏する。Since the present invention is configured as described above, the return force acts on the door even when the door is rotated by 180 degrees or more in any direction, and the door is automatically and reliably closed.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明のドアクローザの平面図、第２図は第１
図における■一■線断面図、第３図は上側の摺動板を取
外した場合のドアクローザの一部断面平面図、第４図は
ドアを５°回転した場合のドアクローザの一部断面平面
図、第５図はドアを２０°回転した場合のドアクローザ
の一部断面平面図、第６図はドアを９０’回転した場合
のドアクローザの一部断面平面図、第７図はドアを１８
０°回転した場合のドアクローザの一部断面平面図、第
８図はドアを１９０°回転した場合のドアクローザの一
部断面平面図である。 １・・・ケーシング、２・・・主軸、３・・・カム、４
・・・主軸ギア、５・・・副軸、６・・・カム、７・・
・副軸ギャ、１０・・・摺動板、１３・・・復帰用スプ
リング、１４・・・ピストン。Fig. 1 is a plan view of the door closer of the present invention, and Fig. 2 is a plan view of the door closer of the present invention.
Figure 3 is a partially sectional plan view of the door closer when the upper sliding plate is removed, and Figure 4 is a partially sectional plan view of the door closer when the door is rotated by 5 degrees. , Fig. 5 is a partially sectional plan view of the door closer when the door is rotated 20 degrees, Fig. 6 is a partially sectional plan view of the door closer when the door is rotated 90', and Fig. 7 is a partially sectional plan view of the door closer when the door is rotated 90'.
FIG. 8 is a partially sectional plan view of the door closer when the door is rotated by 0°, and FIG. 8 is a partially sectional plan view of the door closer when the door is rotated by 190°. 1...Casing, 2...Main shaft, 3...Cam, 4
...Main shaft gear, 5...Subshaft, 6...Cam, 7...
- Subshaft gear, 10...Sliding plate, 13...Returning spring, 14...Piston.

Claims (1)

【特許請求の範囲】 １、ドアの回動に伴って回動する主軸にカムを取付け、
このカムの回動によりピストンを保持している連結部材
を直線移動せしめ、前記ピストンの直線移動により復帰
用スプリングに復帰力を蓄勢するようにしたドアクロー
ザにおいて、前記主軸に隣接してカムを備えた副軸を設
け、この主軸と副軸とを互いにギアにより連結し、主軸
と副軸とのギヤ比を１よりも小さくし、主軸が１８０゜
以上回動しても副軸は１８０゜よりも小さな角度しか回
転しないようにし、前記主軸、副軸のそれぞれのカムに
対してカムフォロワーを設け、これらのカムフォロワー
を前記連結体に連結された摺動板に取付け、これらのカ
ムフォロワーは、ドアの回転角度が小さいきには、主軸
のカムとこれと協働するカムフォロワーとが接触し副軸
のカムとこれと協働するカムフォロワーとが離れ、ドア
の回転角度が大きくなると、主軸のカムとカムフォロワ
ーが離れ、副軸のカムとカムフォロワーとが接触する位
置関係に取付けられていることを特徴とするドアクロー
ザ。 ２、前記主軸と副軸とのギア比は約１／ １．７であることを特徴とする請求項１記載のドアクロ
ーザ。[Claims] 1. A cam is attached to the main shaft that rotates as the door rotates,
In the door closer, a connecting member holding a piston is moved linearly by the rotation of the cam, and a return force is stored in a return spring by the linear movement of the piston, and the door closer includes a cam adjacent to the main shaft. The main shaft and the counter shaft are connected to each other by a gear, and the gear ratio between the main shaft and the counter shaft is made smaller than 1, so that even if the main shaft rotates more than 180 degrees, the counter shaft will not rotate more than 180 degrees. A cam follower is provided for each cam of the main shaft and sub shaft, and these cam followers are attached to a sliding plate connected to the connecting body, and these cam followers are When the rotation angle of the door is small, the cam on the main shaft contacts the cam follower that works with it, and the cam on the subshaft separates from the cam follower that works with it, and when the rotation angle of the door increases, the main shaft A door closer characterized in that the cam and cam follower of the subshaft are separated from each other, and the cam of the subshaft and the cam follower are installed in a position where they are in contact with each other. 2. The door closer according to claim 1, wherein the gear ratio between the main shaft and the sub shaft is about 1/1.7.
JP18958889A 1989-07-21 1989-07-21 Door closer Expired - Fee Related JP2758933B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP18958889A JP2758933B2 (en) 1989-07-21 1989-07-21 Door closer
EP19900307621 EP0409485B1 (en) 1989-07-21 1990-07-12 Door closer
DE1990601652 DE69001652T2 (en) 1989-07-21 1990-07-12 Door closer.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18958889A JP2758933B2 (en) 1989-07-21 1989-07-21 Door closer

Publications (2)

Publication Number Publication Date
JPH0355375A true JPH0355375A (en) 1991-03-11
JP2758933B2 JP2758933B2 (en) 1998-05-28

Family

ID=16243840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18958889A Expired - Fee Related JP2758933B2 (en) 1989-07-21 1989-07-21 Door closer

Country Status (3)

Country Link
EP (1) EP0409485B1 (en)
JP (1) JP2758933B2 (en)
DE (1) DE69001652T2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3045591A1 (en) * 2016-12-15 2018-06-21 In & Tec S.R.L. Hinge for the rotatable movement of a door, a shutter or the like
CN108894641B (en) * 2018-07-10 2023-11-28 上海皇冠门控五金有限公司 Split type device of floor spring oil cylinder
CN113939070B (en) * 2021-10-15 2022-06-28 深圳市尚为照明有限公司 Intelligent lighting system based on 5G information communication
CN116275753B (en) * 2023-05-08 2024-04-12 温州车舟汽车部件有限公司 Anti-offset welding device for engine cooling fan machining

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1978736A (en) * 1932-01-11 1934-10-30 Bommer Emil Cam and slide mechanism
US2962749A (en) * 1953-10-28 1960-12-06 Joseph Stachowicz Door closing device

Also Published As

Publication number Publication date
DE69001652D1 (en) 1993-06-24
JP2758933B2 (en) 1998-05-28
DE69001652T2 (en) 1994-01-05
EP0409485A1 (en) 1991-01-23
EP0409485B1 (en) 1993-05-19

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