JP2020076250A - Floor hinge - Google Patents

Floor hinge Download PDF

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JP2020076250A
JP2020076250A JP2018210237A JP2018210237A JP2020076250A JP 2020076250 A JP2020076250 A JP 2020076250A JP 2018210237 A JP2018210237 A JP 2018210237A JP 2018210237 A JP2018210237 A JP 2018210237A JP 2020076250 A JP2020076250 A JP 2020076250A
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oil chamber
coil spring
compression coil
floor hinge
door
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JP7097795B2 (en
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井上　裕也
Hironari Inoue
裕也 井上
高橋　省次
Shoji Takahashi
省次 高橋
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Ryobi Ltd
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Ryobi Ltd
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Abstract

To prevent a phenomenon in which a helical compression spring is displaced from a shaft center of a piston member.SOLUTION: A floor hinge 10 includes: a hinge case 11; a rotating shaft 14; a cam member 15; a slide plate 17; a rod member 18; a piston member 19; a helical compression spring 31; and control mechanism parts 11b, 11c, 11d and 20. An end of the helical compression spring 31 and members 40 and 18 brought into contact with the end of the helical compression spring 31 are brought into line contact with each other.SELECTED DRAWING: Figure 3

Description

本発明は、フロアヒンジに関するものである。   The present invention relates to a floor hinge.

従来から、建物の開口部に設置される扉を開口部の閉方向へ付勢した状態で回転可能に床から支持するフロアヒンジが公知である。この種のフロアヒンジは、建物の開口部の床面に埋め込まれて使用されるものであり、扉に接続する床面上に突出した回転軸と、該回転軸を扉が閉方向へ回転するように付勢した状態で回転可能に支持するヒンジケースとを有している。ヒンジケースでは、内部に油が収容されており、その油の流量を調整することにより、扉開放時に圧縮コイルばねに蓄えられた弾性力に基づく回転エネルギーによる回転軸への回転付勢力を調整する機構が設けられている。   BACKGROUND ART Conventionally, there is known a floor hinge that rotatably supports a door installed in an opening of a building from a floor in a state of being biased in a closing direction of the opening. This kind of floor hinge is used by being embedded in the floor surface of the opening of the building, and the rotation shaft protruding above the floor surface connected to the door and the rotation shaft in the closing direction of the door. And a hinge case rotatably supported in a biased state. Oil is housed inside the hinge case, and by adjusting the flow rate of the oil, the rotational urging force on the rotating shaft is adjusted by the rotational energy based on the elastic force stored in the compression coil spring when the door is opened. A mechanism is provided.

なお、従来公知の一般的なフロアヒンジを開示するものとして、例えば、下記特許文献１などが存在している。下記特許文献１に記載されたフロアヒンジの構成は、ヒンジケース（ケーシング）の内室がピストン部材（ピストン）によって遮断された２つの圧力媒体室に分割されており、これらの圧力媒体室が、扉（ドア）の閉鎖で縮小されるべき圧力室から圧力媒体を種々異なった絞り可能に流出させるための通路を備え、さらに、ピストン部材（ピストン）内に配置されて扉（ドア）の閉鎖運動中の過圧で開く安全弁によって互いに接続可能である形式のものである。   In addition, as a disclosure of a conventionally known general floor hinge, for example, Patent Document 1 below exists. In the configuration of the floor hinge described in Patent Document 1 below, the inner chamber of the hinge case (casing) is divided into two pressure medium chambers blocked by a piston member (piston), and these pressure medium chambers are A passage for ejecting the pressure medium from the pressure chamber, which is to be reduced by closing the door, in a differently throttleable manner, is further arranged in the piston member (piston) to close the door. It is of a type that can be connected to each other by a safety valve that opens with an overpressure inside.

特開昭５６−００３７７７号公報JP-A-56-003777

しかしながら、上掲した特許文献１に代表される従来公知の一般的なフロアヒンジでは、弾性力に基づく回転エネルギーを発生する圧縮コイルばねの端部が平面接触する部材で押さえられていたので、ピストン部材の軸心から圧縮コイルばねがずれてしまい、圧縮コイルばねが座屈したり、安定した弾性力を生じたりすることができないといった課題が生じていた。   However, in the conventionally known general floor hinge typified by Patent Document 1 listed above, the end of the compression coil spring that generates rotational energy based on the elastic force is pressed by a member that comes into planar contact, so that the piston There has been a problem that the compression coil spring is displaced from the axial center of the member, and the compression coil spring cannot buckle or generate a stable elastic force.

本発明は、上述した従来技術の課題に鑑みて成されたものであり、その目的は、フロアヒンジを構成する圧縮コイルばねが安定して弾性力を生じさせることができるように、ピストン部材の軸心から圧縮コイルばねがずれてしまう現象が生じることの無い構成を備えるフロアヒンジを提供することにある。   The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to enable a compression coil spring that constitutes a floor hinge to stably generate elastic force, and It is an object of the present invention to provide a floor hinge having a configuration in which the phenomenon that the compression coil spring is displaced from the axis does not occur.

以下、本発明について説明する。なお、本発明の理解を容易にするために添付図面の参照番号を括弧書きにて付記するが、それにより本発明が図示の形態に限定されるものではない。   The present invention will be described below. In addition, in order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are added in parentheses, but the present invention is not limited to the illustrated forms.

本発明に係るフロアヒンジ（１０）は、作動油が充填される油室（１２）を備えるヒンジケース（１１）と、前記ヒンジケース（１１）の一端側に配置されるとともに扉と連結されて該扉の開閉動作に伴って回転する回転軸（１４）と、前記回転軸（１４）に固定設置される非円形形状をしたカム部材（１５）と、前記カム部材（１５）の外周面と摺接可能に配置されるカムフォロワ（１６）を備えることで該カム部材（１５）の回転運動に伴って前記ヒンジケース（１１）内を往復移動するスライドプレート（１７）と、前記スライドプレート（１７）に接続するロッド部材（１８）と、前記ロッド部材（１８）における前記スライドプレート（１７）接続側とは逆側の端部に設置され、前記油室を第１の油室（１２ａ）と第２の油室（１２ｂ）に２分割するとともに前記油室（１２）内で往復移動自在に設置されるピストン部材（１９）と、前記油室（１２）を形成する前記ヒンジケース（１１）の内壁面に形成されたストッパ形状部（１１ａ）と前記ピストン部材（１９）との間に配置されることで、前記ピストン部材（１９）に対して常時一定方向の付勢力を及ぼす圧縮コイルばね（３１）と、前記ピストン部材（１９）の往復移動に伴う前記第１の油室（１２ａ）および前記第２の油室（１２ｂ）間での作動油の移動油量を調整することによって前記ピストン部材（１９）の移動速度を制御し、もって前記扉の開扉速度又は閉扉速度を制御する制御機構部（１１ｂ，１１ｃ，１１ｄ，２０）と、を備えるフロアヒンジ（１０）であって、前記圧縮コイルばね（３１）の端部と、当該圧縮コイルばね（３１）の端部と接触する部材（４０、１８）とが、線接触するように構成されていることを特徴とするものである。   A floor hinge (10) according to the present invention comprises a hinge case (11) having an oil chamber (12) filled with hydraulic oil, and is arranged at one end of the hinge case (11) and connected to a door. A rotary shaft (14) that rotates with the opening and closing operation of the door, a non-circular cam member (15) fixedly installed on the rotary shaft (14), and an outer peripheral surface of the cam member (15). By providing a cam follower (16) arranged so as to be slidable, a slide plate (17) reciprocating in the hinge case (11) with the rotational movement of the cam member (15), and the slide plate (17). ) Is connected to the rod member (18), and the rod member (18) is installed at an end of the rod member (18) opposite to the slide plate (17) connection side, and the oil chamber is defined as a first oil chamber (12a). Second oil chamber (1 a piston member (19) which is divided into two parts and is installed so as to reciprocate in the oil chamber (12); and an inner wall surface of the hinge case (11) which forms the oil chamber (12). A compression coil spring (31), which is arranged between the stopper-shaped portion (11a) and the piston member (19) to constantly exert a biasing force in a constant direction on the piston member (19); By adjusting the moving oil amount of the hydraulic oil between the first oil chamber (12a) and the second oil chamber (12b) accompanying the reciprocating movement of the piston member (19), the piston member (19) is moved. A floor hinge (10) comprising a control mechanism section (11b, 11c, 11d, 20) for controlling a moving speed and thus a door opening speed or a door closing speed, the compression coil spring (31) ) Edge If a member (40,18) in contact with the end of the compression coil spring (31), but is characterized in that it is configured to line contact.

本発明に係るフロアヒンジ（１０）では、前記圧縮コイルばね（３１）の端部と接触する部材（４０、１８）が、前記圧縮コイルばね（３１）が及ぼす付勢力の方向に対して傾斜した斜面形状（４０ａ）又は曲面形状（１８ｂ）を有していることが好ましい。   In the floor hinge (10) according to the present invention, the members (40, 18) contacting the ends of the compression coil spring (31) are inclined with respect to the direction of the biasing force exerted by the compression coil spring (31). It preferably has an inclined surface shape (40a) or a curved surface shape (18b).

また、本発明に係るフロアヒンジ（１０）では、前記ロッド部材（１８）における前記ピストン部材（１９）設置側で前記圧縮コイルばね（３１）の端部と接触する部材（４０）が、円錐台形状部（４０ａ）を備え、当該円錐台形状部（４０ａ）の一部が前記圧縮コイルばね（３１）の内周部に挿入されることで、前記圧縮コイルばね（３１）の位置決めがなされることとすることができる。   Further, in the floor hinge (10) according to the present invention, the member (40) that comes into contact with the end of the compression coil spring (31) on the piston member (19) installation side of the rod member (18) is a truncated cone. The compression coil spring (31) is provided with a shape part (40a), and a part of the frustoconical shape part (40a) is inserted into the inner peripheral part of the compression coil spring (31) to position the compression coil spring (31). It can be

また、本発明に係るフロアヒンジ（１０）では、前記ロッド部材（１８）における前記スライドプレート（１７）接続側で前記圧縮コイルばね（３１）の端部と接触する部材（１８）が、Ｒ形状部（１８ｂ）を備え、当該Ｒ形状部（１８ｂ）の一部が前記圧縮コイルばね（３１）の内周部に挿入されることで、前記圧縮コイルばね（３１）の位置決めがなされることとすることができる。   Further, in the floor hinge (10) according to the present invention, the member (18) that comes into contact with the end of the compression coil spring (31) on the side of the rod member (18) connected to the slide plate (17) has an R shape. The R-shaped portion (18b) is provided with a portion (18b), and a part of the R-shaped portion (18b) is inserted into the inner peripheral portion of the compression coil spring (31), thereby positioning the compression coil spring (31). can do.

さらに、本発明に係るフロアヒンジ（１０）では、前記制御機構部（１１ｂ，１１ｃ，１１ｄ，２０）の一部を構成する弁部材（２０）が、前記ロッド部材（１８）と前記ピストン部材（１９）との接続固定手段を兼ねて構成されることとすることができる。   Further, in the floor hinge (10) according to the present invention, the valve member (20) forming a part of the control mechanism portion (11b, 11c, 11d, 20) includes the rod member (18) and the piston member ( 19) and the connecting and fixing means.

本発明によれば、ピストン部材の軸心から圧縮コイルばねがずれてしまう現象が生じることの無い構成を備えることで、圧縮コイルばねが安定して弾性力を生じさせることができるようにしたフロアヒンジを提供することができる。本発明が前記構成を備えることで、組立性に優れたフロアヒンジを実現することが可能となる。   According to the present invention, since the compression coil spring is provided with a configuration in which the phenomenon that the compression coil spring does not deviate from the axial center of the piston member is provided, the compression coil spring can stably generate elastic force. A hinge can be provided. Since the present invention has the above configuration, it is possible to realize a floor hinge having excellent assemblability.

本実施形態に係るフロアヒンジの外観形状を示す図であり、図中の分図（ａ）はフロアヒンジの上面視を示し、分図（ｂ）は側面視を示している。It is a figure which shows the external appearance shape of the floor hinge which concerns on this embodiment, Comprising: (a) of a figure shows the top view of a floor hinge, and (b) shows a side view. 本実施形態に係るフロアヒンジの具体的な構成を説明するための図であり、図中の分図（ａ）は図１におけるＡ−Ａ断面を示し、分図（ｂ）は図１におけるＢ−Ｂ断面を示している。It is a figure for demonstrating the concrete structure of the floor hinge which concerns on this embodiment, the drawing (a) in a figure shows the AA cross section in FIG. 1, and the drawing (b) is B in FIG. The -B cross section is shown. 本実施形態に係るフロアヒンジ１０を構成する部材の一部を示した図であり、図中の分図（ａ）は図２の分図（ａ）に対応しており、図中の分図（ｂ）は図２の分図（ｂ）に対応している。It is the figure which showed a part of member which comprises the floor hinge 10 which concerns on this embodiment, and the diagram (a) in a figure respond | corresponds to the diagram (a) of FIG. (B) corresponds to FIG. 2 (b). 本実施形態に係る弁部材を示す断面図であって、図中の分図（ａ）は閉扉動作において逆止弁の機能を有する弁部材が閉じた状態を示し、分図（ｂ）は開扉動作時において逆止弁の機能を有する弁部材が開いた状態を示している。It is sectional drawing which shows the valve member which concerns on this embodiment, Comprising: The branch diagram (a) in a figure shows the state which the valve member which has a function of a non-return valve is closed in the closing operation, and the branch diagram (b) is an open state. It shows a state in which a valve member having a function of a check valve is opened during door operation. 本実施形態に係るフロアヒンジの動作説明を行うための図であり、特に、扉が全開状態のときのフロアヒンジを示している。It is a figure for demonstrating operation | movement of the floor hinge which concerns on this embodiment, and has shown the floor hinge especially when a door is a fully open state. 本実施形態に係るフロアヒンジの動作説明を行うための図であり、特に、不図示の扉が９５度の開扉角度まで閉扉動作を行った途中の状態のときのフロアヒンジを示している。It is a figure for demonstrating operation | movement of the floor hinge which concerns on this embodiment, and has shown especially the floor hinge in the state in the middle of performing the door-closing operation to the door opening angle of 95 degrees not shown. 本実施形態に係るフロアヒンジの動作説明を行うための図であり、特に、不図示の扉が９０度の開扉角度まで閉扉動作を行った途中の状態のときのフロアヒンジを示している。It is a figure for demonstrating operation | movement of the floor hinge which concerns on this embodiment, and has shown especially the floor hinge in the state in the middle of the door-closing operation | movement to the door opening angle of 90 degrees. 本実施形態に係るフロアヒンジの動作説明を行うための図であり、特に、不図示の扉が７４度の開扉角度まで閉扉動作を行ってＤＡモードが終了して１速モードが開始される状態のときのフロアヒンジを示している。It is a figure for demonstrating operation | movement of the floor hinge which concerns on this embodiment, especially, a door not shown performs a door closing operation | movement to a door opening angle of 74 degrees, DA mode is complete | finished and 1st speed mode is started. The floor hinge in the state is shown. 本実施形態に係るフロアヒンジの動作説明を行うための図であり、特に、不図示の扉が１５度の開扉角度まで閉扉動作を行って１速モードが終了して２速モードが開始される状態のときのフロアヒンジを示している。It is a figure for demonstrating operation | movement of the floor hinge which concerns on this embodiment, especially the door which is not shown performs a door closing operation to the opening angle of 15 degrees, 1st speed mode is complete | finished and 2nd speed mode is started. It shows the floor hinge in the open state. 本実施形態に係るフロアヒンジの動作説明を行うための図であり、特に、不図示の扉が全閉扉角度まで閉扉動作を行った状態のときのフロアヒンジを示している。It is a figure for demonstrating operation | movement of the floor hinge which concerns on this embodiment, and has shown especially the floor hinge in the state which the door not shown has performed the door closing operation | movement to the full-closing angle.

以下、本発明を実施するための好適な実施形態について、図面を用いて説明する。なお、以下の実施形態は、各請求項に係る発明を限定するものではなく、また、実施形態の中で説明されている特徴の組み合わせの全てが発明の解決手段に必須であるとは限らない。   Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. It should be noted that the following embodiments do not limit the invention according to each claim, and all combinations of the features described in the embodiments are not necessarily essential to the solution means of the invention. ..

まず、図１〜図３を用いて、本実施形態に係るフロアヒンジ１０の具体的な構成を説明する。ここで、図１は、本実施形態に係るフロアヒンジの外観形状を示す図であり、図中の分図（ａ）はフロアヒンジの上面視を示し、分図（ｂ）は側面視を示している。また、図２は、本実施形態に係るフロアヒンジの具体的な構成を説明するための図であり、図中の分図（ａ）は図１におけるＡ−Ａ断面を示し、分図（ｂ）は図１におけるＢ−Ｂ断面を示している。なお、図２は、扉が全閉状態のときのフロアヒンジ１０の様子を示した図である。さらに、図３は、本実施形態に係るフロアヒンジ１０を構成する部材の一部を示した図であり、図中の分図（ａ）は図２の分図（ａ）に対応しており、図中の分図（ｂ）は図２の分図（ｂ）に対応している。   First, a specific configuration of the floor hinge 10 according to the present embodiment will be described with reference to FIGS. 1 to 3. Here, FIG. 1 is a diagram showing an external shape of a floor hinge according to the present embodiment, in which FIG. 1A shows a top view of the floor hinge, and FIG. 1B shows a side view thereof. ing. Further, FIG. 2 is a diagram for explaining a specific configuration of the floor hinge according to the present embodiment, in which FIG. 2A is a sectional view taken along the line AA in FIG. 1 and FIG. ) Indicates a BB cross section in FIG. 1. Note that FIG. 2 is a diagram showing a state of the floor hinge 10 when the door is fully closed. Further, FIG. 3 is a diagram showing a part of members constituting the floor hinge 10 according to the present embodiment, and the diagram (a) in the figure corresponds to the diagram (a) in FIG. 2. The diagram (b) in the figure corresponds to the diagram (b) in FIG.

本実施形態に係るフロアヒンジ１０は、作動油が充填される油室１２を備えるヒンジケース１１を有して構成されている。このヒンジケース１１は、概略直方体形状から成る外観形状を有する部材である。ヒンジケース１１の内部は作動油が充填される油室１２として空洞となっており、図２における紙面右側の面には当該空洞を開放する開放部が形成されている。この開放部は、埋栓部材１３によって塞がれており、空洞を閉じることによって油室１２が形成されている。   The floor hinge 10 according to the present embodiment has a hinge case 11 including an oil chamber 12 filled with hydraulic oil. The hinge case 11 is a member having an outer shape of a substantially rectangular parallelepiped shape. The inside of the hinge case 11 is hollow as an oil chamber 12 filled with hydraulic oil, and an opening portion for opening the hollow is formed on the right side of the paper surface of FIG. The open portion is closed by the embedding member 13, and the oil chamber 12 is formed by closing the cavity.

ヒンジケース１１の一端側（図１および図２における紙面左側）には、不図示の扉と連結されて該扉の開閉動作に伴って回転する回転軸１４が回転自在な状態で配置されている。この回転軸１４の略軸中央部には、非円形形状である略ハート形状をしたカム部材１５が固定設置されている（図２参照）。   At one end of the hinge case 11 (on the left side of the paper in FIGS. 1 and 2), a rotary shaft 14 that is connected to a door (not shown) and that rotates with the opening / closing operation of the door is rotatably arranged. .. A substantially heart-shaped cam member 15 having a non-circular shape is fixedly installed at a substantially central portion of the rotary shaft 14 (see FIG. 2).

カム部材１５の配置位置に対して図２における紙面左側の位置には、カムフォロワ１６が配置されており、このカムフォロワ１６はスライドプレート１７に対して外輪が回転自在な状態で固定設置されている。カムフォロワ１６は、カム部材１５の外周面と摺接可能に配置されているので、不図示の扉が開閉動作を行うと、回転軸１４とともに略ハート形状をしたカム部材１５が回転し、カム部材１５の外周面に摺接した状態を常時維持しながらカム部材１５の外周面に沿ってカムフォロワ１６の外輪が回転する。つまり、カム部材１５が有する略ハート形状をしたカム形状の作用によって、カムフォロワ１６とこのカムフォロワ１６が固定設置されたスライドプレート１７は、ヒンジケース１１内を図２における紙面左右方向に向けて往復移動するように構成されている。   A cam follower 16 is arranged at a position on the left side of the drawing in FIG. 2 with respect to the position where the cam member 15 is arranged. The cam follower 16 is fixedly installed on the slide plate 17 in a state where the outer ring is rotatable. Since the cam follower 16 is arranged so as to be slidably contactable with the outer peripheral surface of the cam member 15, when the door (not shown) is opened and closed, the cam member 15 having a substantially heart shape is rotated together with the rotating shaft 14, and the cam member 15 is rotated. The outer ring of the cam follower 16 rotates along the outer peripheral surface of the cam member 15 while always maintaining the state of sliding contact with the outer peripheral surface of the cam member 15. In other words, due to the action of the substantially heart-shaped cam shape of the cam member 15, the cam follower 16 and the slide plate 17 to which the cam follower 16 is fixedly installed reciprocate in the hinge case 11 in the left-right direction on the paper surface of FIG. Is configured to.

また、スライドプレート１７には、ロッド部材１８が接続されている。このロッド部材１８は、スライドプレート１７におけるカムフォロワ１６設置側とは逆側に配置されており、図２中の分図（ａ）で示されたＡ−Ａ断面視において、カム部材１５がカムフォロワ１６とロッド部材１８との間に位置するように配置されている。   A rod member 18 is connected to the slide plate 17. The rod member 18 is arranged on the opposite side of the slide plate 17 from the side on which the cam follower 16 is installed, and the cam member 15 is the same as the cam follower 16 in a sectional view taken along the line AA shown in FIG. Is arranged so as to be located between the rod member 18 and the rod member 18.

このロッド部材１８におけるスライドプレート１７接続側とは逆側の端部には、ピストン部材１９が設置されている。このピストン部材１９は、ヒンジケース１１の内部に形成された油室１２を第１の油室である作動油室１２ａと第２の油室である圧油室１２ｂに２分割する機能を発揮する部材である。上述したように、不図示の扉が開閉動作を行うと、スライドプレート１７はヒンジケース１１内を図２における紙面左右方向に向けて往復移動するので、スライドプレート１７に取り付けられたロッド部材１８とピストン部材１９についても、油室１２内を図２における紙面左右方向に向けて往復移動することとなる。そして、図２に示すような扉が全閉状態の場合、ピストン部材１９は第２の油室である圧油室１２ｂが最も狭くなる位置に配置されるとともに、第１の油室である作動油室１２ａが最も広くなる位置に配置されることとなる。また、不図示の扉が全閉状態から開扉動作を行って開扉角度が大きくなるにしたがって、ピストン部材１９は第２の油室である圧油室１２ｂを広げる方向に移動するとともに、第１の油室である作動油室１２ａを狭める方向に移動することとなる。   A piston member 19 is installed at the end of the rod member 18 opposite to the side where the slide plate 17 is connected. The piston member 19 exerts a function of dividing the oil chamber 12 formed inside the hinge case 11 into a hydraulic oil chamber 12a which is a first oil chamber and a pressure oil chamber 12b which is a second oil chamber. It is a member. As described above, when the door (not shown) is opened / closed, the slide plate 17 reciprocates in the hinge case 11 in the left-right direction of the paper surface of FIG. 2, so that the rod member 18 attached to the slide plate 17 The piston member 19 also reciprocates in the oil chamber 12 in the left-right direction on the paper surface of FIG. When the door as shown in FIG. 2 is in the fully closed state, the piston member 19 is arranged at the position where the pressure oil chamber 12b, which is the second oil chamber, is the narrowest, and the piston member 19 is the first oil chamber. The oil chamber 12a is arranged at the widest position. Further, as the door (not shown) performs the door opening operation from the fully closed state to increase the door opening angle, the piston member 19 moves in a direction of expanding the pressure oil chamber 12b that is the second oil chamber, and The hydraulic oil chamber 12a, which is the first oil chamber, is moved in a direction in which it is narrowed.

また、本実施形態に係るピストン部材１９には、逆止弁と強制閉鎖弁という２つの機能を１部材で持ち合わせた弁部材２０が設置されている。弁部材２０は、第１の油室である作動油室１２ａから第２の油室である圧油室１２ｂに対して作動油が流入することを許容する一方で、逆の作動油の流れを停止する逆止弁の機能を有した弁体である。したがって、不図示の扉が図２で示す全閉状態から開扉動作を行ってピストン部材１９が油室１２内を図２における紙面右側から左側に向けて移動するときに、弁部材２０は、第１の油室である作動油室１２ａから第２の油室である圧油室１２ｂに対して作動油が流入することを許容することで、ピストン部材１９が油室１２内を移動することを阻害しないように構成している。一方、不図示の扉が開扉状態から図２で示す全閉状態へと閉扉動作を行うときには、ピストン部材１９が油室１２内を図２における紙面左側から右側に向けて移動するが、このときには、弁部材２０は作動油の流通を許可しない。   Further, the piston member 19 according to the present embodiment is provided with a valve member 20 having two functions of a check valve and a forced closing valve as one member. The valve member 20 allows the hydraulic oil to flow from the hydraulic oil chamber 12a, which is the first oil chamber, into the pressure oil chamber 12b, which is the second oil chamber, while allowing the reverse flow of hydraulic oil. It is a valve body having a function of a check valve that stops. Therefore, when the door (not shown) performs the door opening operation from the fully closed state shown in FIG. 2 and the piston member 19 moves in the oil chamber 12 from the right side to the left side in the drawing of FIG. The piston member 19 moves in the oil chamber 12 by allowing the hydraulic oil to flow from the hydraulic oil chamber 12a that is the first oil chamber to the pressure oil chamber 12b that is the second oil chamber. It is configured so as not to disturb. On the other hand, when the door (not shown) is closed from the open state to the fully closed state shown in FIG. 2, the piston member 19 moves in the oil chamber 12 from the left side to the right side in FIG. At times, the valve member 20 does not permit the flow of hydraulic oil.

また、弁部材２０が有する強制閉鎖弁としての機能は、後述する制御機構部が機能しないときなど、油室１２内の作動油に対して異常な油圧が生じたときに稼働する機能であり、本実施形態に係るフロアヒンジ１０において安全装置的な機能を発揮することもできるようになっている。   The function of the valve member 20 as a forced closing valve is a function that operates when an abnormal hydraulic pressure occurs in the hydraulic oil in the oil chamber 12, such as when the control mechanism unit described later does not function, The floor hinge 10 according to the present embodiment can also exhibit a safety device-like function.

ここで、図４を参照図面に加えて、本実施形態に係る弁部材２０の具体的な構成を説明する。図４は、本実施形態に係る弁部材を示す断面図であって、図中の分図（ａ）は閉扉動作において逆止弁の機能を有する弁部材が閉じた状態を示し、分図（ｂ）は開扉動作時において逆止弁の機能を有する弁部材が開いた状態を示している。   Here, a specific configuration of the valve member 20 according to the present embodiment will be described with reference to FIG. 4 as a reference drawing. FIG. 4 is a cross-sectional view showing the valve member according to the present embodiment, and a partial view (a) in the drawing shows a state in which a valve member having a function of a check valve in a closing operation is closed, and a partial view ( b) shows a state in which the valve member having the function of the check valve is opened during the door opening operation.

本実施形態に係る弁部材２０は、断面略Ｔ字形をした弁座２３を有している。この弁座２３は、略Ｔ字形の縦棒の中心を貫通するように貫通孔２３ａを有しており、この貫通孔２３ａには、これまた断面略Ｔ字形をした弁体２２が挿入設置されている。弁体２２には、Ｏリング２４が設置されており、弁体２２が貫通孔２３ａを塞ぐように設置される際に、Ｏリング２４が弁座２３と弁体２２との間で貫通孔２３ａを閉鎖して、弁座２３と弁体２２との間での作動油の流通を阻害するように構成されている。   The valve member 20 according to the present embodiment has a valve seat 23 having a substantially T-shaped cross section. The valve seat 23 has a through hole 23a so as to penetrate the center of a substantially T-shaped vertical rod, and the valve body 22 having a substantially T-shaped cross section is inserted and installed in the through hole 23a. ing. The valve body 22 is provided with an O-ring 24. When the valve body 22 is installed so as to close the through hole 23a, the O ring 24 is provided between the valve seat 23 and the valve body 22 through the through hole 23a. Is closed to block the flow of hydraulic oil between the valve seat 23 and the valve body 22.

弁体２２についても、略Ｔ字形の縦棒の中心を貫通するように内側通路２７が形成されている。この内側通路２７は、弁体２２を貫通するように形成されている。また、弁体２２には、内側通路２７の貫通方向に直交する方向に側孔２５が形成されており、内側通路２７だけでなく、この側孔２５からも作動油が流通できるように構成されている。また、内側通路２７の内部形状は、内径が広い部分と狭い部分とで構成されており、内径が広い部分には、安全弁２９とコイルばね２８が配置されている。コイルばね２８は、弁体２２に設置されたストッパピン２６によって一方側の端部を固定され、他方側の端部を安全弁２９の頭で挟み込まれた状態で設置されている。したがって、コイルばね２８は、内側通路２７の内部で安全弁２９に対して常時ばねの弾性力を及ぼしており、常には、安全弁２９がコイルばね２８によって押圧され、安全弁２９の頭が内側通路２７における内径の狭くなる箇所を押すことで、内側通路２７を閉鎖するように構成されている。また、弁体２２に設置されたストッパピン２６は、弁体２２の可動範囲を規制する部材としても用いられており、弁座２３が有する貫通孔２３ａ内を移動する弁体２２の抜け止めとしての機能を有している。   Also in the valve body 22, an inner passage 27 is formed so as to penetrate the center of the substantially T-shaped vertical rod. The inner passage 27 is formed so as to penetrate the valve body 22. A side hole 25 is formed in the valve body 22 in a direction orthogonal to the penetrating direction of the inner passage 27, and the working oil is allowed to flow not only from the inner passage 27 but also from the side hole 25. ing. The inner shape of the inner passage 27 is composed of a portion having a wide inner diameter and a portion having a narrow inner diameter, and a safety valve 29 and a coil spring 28 are arranged in the portion having a large inner diameter. The coil spring 28 has one end fixed by a stopper pin 26 provided on the valve body 22, and the other end is sandwiched between the heads of the safety valves 29. Therefore, the coil spring 28 constantly exerts the elastic force of the spring on the safety valve 29 inside the inner passage 27, and the safety valve 29 is always pressed by the coil spring 28 so that the head of the safety valve 29 is located in the inner passage 27. The inner passage 27 is configured to be closed by pushing a portion where the inner diameter becomes narrow. Further, the stopper pin 26 installed on the valve body 22 is also used as a member for restricting the movable range of the valve body 22, and serves as a retainer for the valve body 22 moving in the through hole 23a of the valve seat 23. It has the function of.

本実施形態に係る弁部材２０は、以上説明した構成を備えることから、ピストン部材１９が第２の油室である圧油室１２ｂを狭くする方向に動く閉扉動作時には、図４中の分図（ａ）のように、弁体２２が第２の油室である圧油室１２ｂ側の油圧を受けて弁座２３に対して相対的に第１の油室である作動油室１２ａ側に移動した状態にあり、Ｏリング２４が弁座２３の端面に当接して側孔２５は閉じた状態になる。ピストン部材１９が第１の油室である作動油室１２ａ側に動く開扉動作時には、図４中の分図（ｂ）のように、弁体２２が第１の油室である作動油室１２ａ側の油圧を受けて弁座２３に対して相対的に第２の油室である圧油室１２ｂ側に移動した状態にあり、弁体２２のストッパピン２６が弁座２３の端面に当接し、Ｏリング２４が弁座２３の端面から第２の油室である圧油室１２ｂ側に離れて側孔２５は開いた状態となり、弁体２２の内側通路２７から側孔２５を通って第１の油室である作動油室１２ａ側の作動油が第２の油室である圧油室１２ｂ側へと流れることができる。すなわち、弁体２２の内側通路２７と側孔２５が、第１の油室である作動油室１２ａと第２の油室である圧油室１２ｂとを連通する連通孔を構成することになる。なお、弁体２２の内側通路２７は弁体２２における第１の油室である作動油室１２ａ側の端面のみならず第２の油室である圧油室１２ｂ側の端面にも開口しているが、該圧油室１２ｂ側の開口部は常にはコイルばね２８によって圧油室１２ｂ側に押圧付勢されている安全弁２９によって閉鎖されており、扉が外力によって強制的に閉じられて第２の油室である圧油室１２ｂ側の油圧が急激に高くなった場合には、高くなった圧油室１２ｂの油圧によって安全弁２９がコイルばね２８の付勢力に抗してコイルばね２８を圧縮させつつ作動油室１２ａ方向に移動して内側通路２７における圧油室１２ｂ側の開口部を開けることとなる。   Since the valve member 20 according to the present embodiment is provided with the configuration described above, during the door closing operation in which the piston member 19 moves in the direction of narrowing the pressure oil chamber 12b that is the second oil chamber, the partial diagram in FIG. As shown in (a), the valve body 22 receives the hydraulic pressure on the side of the pressure oil chamber 12b, which is the second oil chamber, and moves toward the hydraulic oil chamber 12a side, which is the first oil chamber, relative to the valve seat 23. In the moved state, the O-ring 24 contacts the end surface of the valve seat 23, and the side hole 25 is closed. During the door-opening operation in which the piston member 19 moves toward the hydraulic oil chamber 12a, which is the first hydraulic chamber, the valve element 22 is the hydraulic oil chamber, which is the first hydraulic chamber, as shown in FIG. 4 (b). It is in a state where it is moved to the pressure oil chamber 12b side which is the second oil chamber relative to the valve seat 23 by receiving the oil pressure on the 12a side, and the stopper pin 26 of the valve element 22 contacts the end surface of the valve seat 23. Then, the O-ring 24 is separated from the end surface of the valve seat 23 toward the pressure oil chamber 12b, which is the second oil chamber, and the side hole 25 is opened, and the side hole 25 is passed from the inner passage 27 of the valve body 22 through the side hole 25. The hydraulic oil on the hydraulic oil chamber 12a side that is the first oil chamber can flow to the pressure oil chamber 12b side that is the second oil chamber. That is, the inner passage 27 of the valve element 22 and the side hole 25 form a communication hole that connects the hydraulic oil chamber 12a, which is the first oil chamber, and the pressure oil chamber 12b, which is the second oil chamber. .. The inner passage 27 of the valve body 22 is opened not only on the end surface of the valve body 22 on the hydraulic oil chamber 12a side, which is the first oil chamber, but also on the end surface on the pressure oil chamber 12b side, which is the second oil chamber. However, the opening on the pressure oil chamber 12b side is always closed by a safety valve 29 which is biased by the coil spring 28 toward the pressure oil chamber 12b side, and the door is forcibly closed by an external force. When the oil pressure on the side of the pressure oil chamber 12b, which is the second oil chamber, suddenly increases, the safety valve 29 resists the biasing force of the coil spring 28 by the increased oil pressure of the pressure oil chamber 12b. While being compressed, it moves in the direction of the hydraulic oil chamber 12a to open the opening of the inner passage 27 on the side of the hydraulic oil chamber 12b.

さて、以上のような構成と動作を有する弁部材２０であるが、本実施形態に係る弁部材２０は、取付方法についても特徴を有している。すなわち、本実施形態に係る弁部材２０は、断面略Ｔ字形状をした弁座２３の略Ｔ字形の縦棒の外周面にねじ溝２３ｂが形成されている。そして、このねじ溝２３ｂは、図３に示すように、ロッド部材１８におけるピストン部材１９設置側の軸端部に形成されたねじ孔１８ａに螺入できるように構成されている。そして、弁部材２０をロッド部材１８に螺入接合する際には、ロッド部材１８の軸端部と弁部材２０とでピストン部材１９を挟み込むことで、ロッド部材１８に対するピストン部材１９の固定を行うことができる。つまり、本実施形態に係る弁部材２０は、逆止弁と強制閉鎖弁という２つの機能を１部材で有するだけでなく、ロッド部材１８とピストン部材１９との接続固定手段としての機能をも兼用できる部材となっている。かかる構成は、従来技術に比べてフロアヒンジ１０を構成する部材の部品点数の削減につながるものであり、製造コストの削減効果と組立性の向上効果を実現するものである。   Now, the valve member 20 having the above-described configuration and operation, the valve member 20 according to the present embodiment is also characterized by the mounting method. That is, in the valve member 20 according to the present embodiment, the thread groove 23b is formed on the outer peripheral surface of the substantially T-shaped vertical rod of the valve seat 23 having the substantially T-shaped cross section. As shown in FIG. 3, the thread groove 23b is configured to be screwed into a threaded hole 18a formed in a shaft end portion of the rod member 18 on the piston member 19 installation side. When the valve member 20 is screwed and joined to the rod member 18, the piston member 19 is fixed to the rod member 18 by sandwiching the piston member 19 between the shaft end portion of the rod member 18 and the valve member 20. be able to. That is, the valve member 20 according to the present embodiment not only has the two functions of the check valve and the forced closing valve as one member, but also has the function of connecting and fixing the rod member 18 and the piston member 19. It is a member that can. Such a configuration leads to a reduction in the number of parts of the members constituting the floor hinge 10 as compared with the conventional technique, and realizes the effect of reducing the manufacturing cost and the effect of improving the assemblability.

また、図２に示すように、ヒンジケース１１には、弁部材２０といった機構部材の他に、第２の油室である圧油室１２ｂと第１の油室である作動油室１２ａとを接続する１速流路１１ｂや２速流路１１ｃ、第２の油室である圧油室１２ｂと第１の油室である作動油室１２ａとを接続する１速流路１１ｂとは別の独自の流路であるＤＡ流路１１ｄなどが形成されている。これらの機構部材や流路によって、本実施形態に係る制御機構部が形成されており、ピストン部材１９の往復移動に伴う第１の油室である作動油室１２ａおよび第２の油室である圧油室１２ｂ間での作動油の移動油量を調整することによってピストン部材１９の移動速度を制御し、もって扉の開扉速度又は閉扉速度を制御することができるようになっている。   Further, as shown in FIG. 2, in the hinge case 11, in addition to a mechanical member such as the valve member 20, a pressure oil chamber 12b that is a second oil chamber and a hydraulic oil chamber 12a that is a first oil chamber are provided. The first speed flow passage 11b and the second speed flow passage 11c which are connected to each other are different from the first speed flow passage 11b which connects the pressure oil chamber 12b which is the second oil chamber and the hydraulic oil chamber 12a which is the first oil chamber. A DA flow path 11d, which is a unique flow path, is formed. The control mechanism portion according to the present embodiment is formed by these mechanical members and flow paths, and is the hydraulic oil chamber 12a and the second oil chamber that are the first oil chamber accompanying the reciprocating movement of the piston member 19. The moving speed of the piston member 19 can be controlled by adjusting the moving oil amount of the hydraulic oil between the pressure oil chambers 12b, and thus the opening speed or closing speed of the door can be controlled.

ここで、油室１２を形成するヒンジケース１１の内壁面には、ストッパ形状部１１ａが形成されている（図２中の分図（ｂ）参照）。このストッパ形状部１１ａは、スライドプレート１７とロッド部材１８との接続位置から僅かにピストン部材１９側に離れた位置に形成されている。そして、このストッパ形状部１１ａとピストン部材１９との間には、ピストン部材１９に対して常時一定方向の付勢力を及ぼす圧縮コイルばね３１が配置されている。すなわち、本実施形態に係る圧縮コイルばね３１は、扉が全閉状態のときには、図２における紙面左側のコイル端部をストッパ形状部１１ａに当接しており、また、図２における紙面右側のコイル端部をピストン部材１９に当接しているので、ピストン部材１９を図２における紙面右方向に向けて常時押圧するように構成されている。この圧縮コイルばね３１によって及ぼされる付勢力の方向は、不図示の扉が全閉状態から開扉動作を行うに際して当該開扉動作に対して負荷を与える方向となっており、不図示の扉に対して常時一定の力を及ぼす機構となっている。   Here, a stopper-shaped portion 11a is formed on the inner wall surface of the hinge case 11 that forms the oil chamber 12 (see the division (b) in FIG. 2). The stopper-shaped portion 11a is formed at a position slightly separated from the connecting position between the slide plate 17 and the rod member 18 toward the piston member 19 side. A compression coil spring 31 that constantly applies a biasing force to the piston member 19 in a fixed direction is disposed between the stopper-shaped portion 11a and the piston member 19. That is, in the compression coil spring 31 according to the present embodiment, when the door is in the fully closed state, the coil end on the left side of the paper in FIG. 2 is in contact with the stopper-shaped portion 11a, and the coil on the right side of the paper in FIG. Since the end portion is in contact with the piston member 19, the piston member 19 is always pressed toward the right side of the paper surface of FIG. The direction of the urging force exerted by the compression coil spring 31 is a direction that applies a load to the door opening operation when the door (not shown) performs the door opening operation from the fully closed state. On the other hand, it is a mechanism that constantly exerts a constant force.

ここで、本実施形態では、圧縮コイルばね３１を設置するための構成として、圧縮コイルばね３１の端部と接触する部材の断面形状が、圧縮コイルばね３１が及ぼす付勢力の方向に対して傾斜した斜面形状又は曲面形状を有しているという特徴を備えている。その特徴について、図３を参照して具体的に説明する。   Here, in the present embodiment, as a configuration for installing the compression coil spring 31, the cross-sectional shape of the member that comes into contact with the end of the compression coil spring 31 is inclined with respect to the direction of the biasing force exerted by the compression coil spring 31. It has the feature that it has a sloped shape or a curved surface shape. The characteristic will be specifically described with reference to FIG.

まず、本実施形態では、ロッド部材１８におけるピストン部材１９設置側で圧縮コイルばね３１の端部と接触する部材が、円錐台形状部４０ａを備えたストッパ部材４０として構成されている。このストッパ部材４０は、接続ピン４１を介してロッド部材１８の軸端部に固定設置されており、ストッパ部材４０が有する円錐台形状部４０ａの一部が圧縮コイルばね３１の内周部に挿入されることで、円錐台形状部４０ａの表面の傾斜した斜面がコイル状の圧縮コイルばね３１に対して調芯作用を及ぼすことでロッド部材１８の軸中心と圧縮コイルばね３１の付勢方向を概略揃え、圧縮コイルばね３１の位置決めを行うことを実現している。   First, in the present embodiment, the member that comes into contact with the end of the compression coil spring 31 on the piston member 19 installation side of the rod member 18 is configured as the stopper member 40 having the truncated cone shape portion 40a. The stopper member 40 is fixedly installed on the shaft end portion of the rod member 18 via the connection pin 41, and a part of the truncated cone-shaped portion 40 a of the stopper member 40 is inserted into the inner peripheral portion of the compression coil spring 31. By doing so, the inclined slope of the surface of the truncated cone-shaped portion 40a exerts an aligning action on the coil-shaped compression coil spring 31 so that the axial center of the rod member 18 and the urging direction of the compression coil spring 31 are aligned. It is realized to roughly align and position the compression coil spring 31.

一方、本実施形態では、ロッド部材１８における反ピストン部材設置側で圧縮コイルばね３１の端部と接触する部材が、Ｒ形状部１８ｂを備える構成が採用されている。このＲ形状部１８ｂは、ロッド部材１８におけるスライドプレート１７との設置側の軸端部側に設けられた形状であり、当該Ｒ形状部１８ｂの一部が圧縮コイルばね３１の内周部に挿入されることで、圧縮コイルばね３１の位置決めがなされる構成となっている。なお、このＲ形状部１８ｂについては、本実施形態に係るフロアヒンジ１０が完成して稼働する際には圧縮コイルばね３１と接触することは無く、フロアヒンジ１０の組立ての際に圧縮コイルばね３１をロッド部材１８の軸心に対して調芯させる機能を発揮できる点において有用である。   On the other hand, in the present embodiment, the member that comes into contact with the end of the compression coil spring 31 on the side opposite to the piston member installation side of the rod member 18 includes the R-shaped portion 18b. The R-shaped portion 18b has a shape provided on the shaft end side of the rod member 18 on the side where the rod member 18 is installed with the slide plate 17, and a part of the R-shaped portion 18b is inserted into the inner peripheral portion of the compression coil spring 31. By doing so, the compression coil spring 31 is positioned. The R-shaped portion 18b does not come into contact with the compression coil spring 31 when the floor hinge 10 according to the present embodiment is completed and is in operation, and the R-shaped portion 18b does not come into contact with the compression coil spring 31 when the floor hinge 10 is assembled. It is useful in that it can exert the function of aligning the rod with the axis of the rod member 18.

上述した本実施形態の構成は、圧縮コイルばね３１の端部と、当該圧縮コイルばね３１の端部と接触する部材（ストッパ部材４０の円錐台形状部４０ａ、ロッド部材１８のＲ形状部１８ｂ）とが、線接触するように構成されているということができる。このような構成を備えることで、ピストン部材１９の軸心から圧縮コイルばね３１がずれてしまう現象が生じることの無い構成を実現できるので、圧縮コイルばね３１が安定して弾性力を生じさせることができるようにしたフロアヒンジ１０を提供することができる。また、本実施形態に係るフロアヒンジ１０が前記構成を備えることで、組立性に優れたフロアヒンジ１０を提供することが可能となっている。   In the configuration of the present embodiment described above, the end portion of the compression coil spring 31 and the member that contacts the end portion of the compression coil spring 31 (the truncated cone-shaped portion 40a of the stopper member 40, the R-shaped portion 18b of the rod member 18). It can be said that and are configured to be in line contact. By providing such a configuration, it is possible to realize a configuration in which the phenomenon that the compression coil spring 31 deviates from the axial center of the piston member 19 does not occur, so that the compression coil spring 31 stably generates an elastic force. The floor hinge 10 can be provided. Further, since the floor hinge 10 according to the present embodiment has the above-mentioned configuration, it is possible to provide the floor hinge 10 having excellent assemblability.

以上、本実施形態に係るフロアヒンジ１０の具体的な構成を説明した。次に、図５〜図１０を参照図面に加えて、本実施形態に係るフロアヒンジ１０の動作説明を行う。ここで、図５〜図１０は、本実施形態に係るフロアヒンジの動作説明を行うための図であり、特に、図５は扉が全開状態のときのフロアヒンジを示しており、図６は不図示の扉が９５度の開扉角度まで閉扉動作を行った途中の状態のときのフロアヒンジを示しており、図７は不図示の扉が９０度の開扉角度まで閉扉動作を行った途中の状態のときのフロアヒンジを示しており、図８は不図示の扉が７４度の開扉角度まで閉扉動作を行ってＤＡモードが終了して１速モードが開始される状態のときのフロアヒンジを示しており、図９は不図示の扉が１５度の開扉角度まで閉扉動作を行って１速モードが終了して２速モードが開始される状態のときのフロアヒンジを示しており、図１０は不図示の扉が全閉扉角度まで閉扉動作を行った状態のときのフロアヒンジを示している。   The specific configuration of the floor hinge 10 according to the present embodiment has been described above. Next, the operation of the floor hinge 10 according to this embodiment will be described with reference to FIGS. 5 to 10 as reference drawings. Here, FIGS. 5 to 10 are views for explaining the operation of the floor hinge according to the present embodiment, and in particular, FIG. 5 shows the floor hinge when the door is fully opened, and FIG. FIG. 7 shows the floor hinge when the door (not shown) is in the middle of performing the closing operation up to the opening angle of 95 degrees, and FIG. 7 shows that the door (not shown) performs the closing operation up to the opening angle of 90 degrees. FIG. 8 shows the floor hinges in the middle of the process, and FIG. 8 shows a state in which the door (not shown) performs the closing operation up to the opening angle of 74 degrees to end the DA mode and start the first speed mode. FIG. 9 shows the floor hinge, and FIG. 9 shows the floor hinge when the door (not shown) closes the door to an opening angle of 15 degrees to end the first speed mode and start the second speed mode. FIG. 10 shows a state in which the door (not shown) has been closed to the fully closed angle. Shows the floor hinge.

まず、不図示の扉が全開状態にあるとき、本実施形態に係るフロアヒンジ１０では、ピストン部材１９は第２の油室である圧油室１２ｂが最も広くなる位置に配置されるとともに、第１の油室である作動油室１２ａが最も狭くなる位置に配置されている。このとき、圧縮コイルばね３１は最も圧縮された状態となっているが、圧縮コイルばね３１の一端側（図５における紙面右側）はストッパ部材４０の円錐台形状部４０ａによって線接触で保持されているので、調芯作用による位置決め効果によって、圧縮コイルばね３１が位置ずれや座屈を起こしたりすることが無い。   First, when the door (not shown) is fully opened, in the floor hinge 10 according to the present embodiment, the piston member 19 is arranged at the position where the pressure oil chamber 12b, which is the second oil chamber, becomes the widest, and The hydraulic oil chamber 12a, which is the first oil chamber, is arranged at the position where it becomes narrowest. At this time, the compression coil spring 31 is in the most compressed state, but one end side of the compression coil spring 31 (on the right side of the paper surface in FIG. 5) is held in line contact with the truncated cone-shaped portion 40a of the stopper member 40. Therefore, the compression coil spring 31 will not be displaced or buckled due to the positioning effect of the centering action.

図５の状態から不図示の扉の閉扉動作を続けると、図６、図７、図８で示すように、略ハート形状をしたカム部材１５の形状作用によってロッド部材１８やピストン部材１９等が図６乃至図８における紙面右側に移動する。このとき、弁部材２０は、第２の油室である圧油室１２ｂから第１の油室である作動油室１２ａに対して作動油が流入することを許容ぜず、作動油の流通はＤＡ流路１１ｄによって行われる。したがって、不図示の扉が全開状態の図５から、不図示の扉が７４度の開扉角度まで閉扉動作を行ってＤＡモードが終了して１速モードが開始される状態の図８までの間は、不図示の扉がゆっくりと閉まるＤＡ（ディレイドアクション）モードが実行されることとなる。   When the closing operation of the door (not shown) is continued from the state of FIG. 5, the rod member 18, the piston member 19 and the like are removed by the shape action of the substantially heart-shaped cam member 15 as shown in FIGS. 6, 7 and 8. It moves to the right side of the paper surface in FIGS. 6 to 8. At this time, the valve member 20 does not allow the hydraulic oil to flow from the pressure oil chamber 12b, which is the second oil chamber, into the hydraulic oil chamber 12a, which is the first oil chamber, and the flow of the hydraulic oil is not allowed. This is performed by the DA channel 11d. Therefore, from FIG. 5 in which the door (not shown) is fully open, to FIG. 8 in which the door (not shown) closes to the opening angle of 74 degrees and the DA mode ends and the first speed mode starts. During this period, the DA (delayed action) mode in which the door (not shown) is slowly closed is executed.

その後、図８から図９で示した状態までは、１速流路１１ｂが作動油を流通させることで不図示の扉を早めに動作させ、さらに、図９から図１０で示した全閉状態まではゆっくり確実に不図示の扉を動作させて扉の確実な閉扉状態を実現するための２速流路１１ｃを利用した閉扉動作が実行される。図５〜図１０を用いて説明した動作状態のいずれにおいても、本実施形態に係るフロアヒンジ１０では、圧縮コイルばね３１の端部と、当該圧縮コイルばね３１の端部と接触するストッパ部材４０の円錐台形状部４０ａとが線接触するように構成されているので、ピストン部材１９の軸心から圧縮コイルばね３１がずれてしまう現象が生じることが無く、安定した動作を実行することが可能となっている。   After that, from the state shown in FIG. 8 to FIG. 9, the first speed flow passage 11b allows the working oil to flow therethrough to operate the door (not shown) earlier, and further to the fully closed state shown in FIG. 9 to FIG. Until then, the door closing operation is performed using the second speed flow passage 11c for slowly and surely operating the door (not shown) to realize the reliable door closed state. In any of the operating states described with reference to FIGS. 5 to 10, in the floor hinge 10 according to the present embodiment, the end portion of the compression coil spring 31 and the stopper member 40 that contacts the end portion of the compression coil spring 31. Since it is configured to make a line contact with the truncated cone-shaped portion 40a of the piston member, the phenomenon that the compression coil spring 31 is displaced from the axial center of the piston member 19 does not occur, and stable operation can be performed. Has become.

以上、本発明の好適な実施形態について説明したが、本発明の技術的範囲は上記実施形態に記載の範囲には限定されない。上記実施形態には、多様な変更又は改良を加えることが可能である。その様な変更又は改良を加えた形態も本発明の技術的範囲に含まれ得ることが、特許請求の範囲の記載から明らかである。   Although the preferred embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the scope described in the above embodiments. Various changes or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiment added with such changes or improvements can be included in the technical scope of the present invention.

１０ フロアヒンジ、１１ ヒンジケース、１１ａ ストッパ形状部、１１ｂ １速流路（制御機構部の一部）、１１ｃ ２速流路（制御機構部の一部）、１１ｄ ＤＡ流路（制御機構部の一部）、１２ 油室、１２ａ 作動油室（第１の油室）、１２ｂ 圧油室（第２の油室）、１３ 埋栓部材、１４ 回転軸、１５ カム部材、１６ カムフォロワ、１７ スライドプレート、１８ ロッド部材（圧縮コイルばねの端部と接触する部材）、１８ａ ねじ孔、１８ｂ Ｒ形状部（曲面形状）、１９ ピストン部材、２０ 弁部材（制御機構部の一部）、２２ 弁体、２３ 弁座、２３ａ 貫通孔、２３ｂ ねじ溝、２４ Ｏリング、２５ 側孔、２６ ストッパピン、２７ 内側通路、２８ コイルばね、２９ 安全弁、３１ 圧縮コイルばね、４０ ストッパ部材（圧縮コイルばねの端部と接触する部材）、４０ａ 円錐台形状部（斜面形状）、４１ 接続ピン。   10 floor hinge, 11 hinge case, 11a stopper shape part, 11b 1st speed flow path (part of control mechanism part), 11c 2nd speed flow path (part of control mechanism part), 11d DA flow path (control mechanism part) Part), 12 oil chamber, 12a hydraulic oil chamber (first oil chamber), 12b pressure oil chamber (second oil chamber), 13 plug member, 14 rotary shaft, 15 cam member, 16 cam follower, 17 slide Plate, 18 rod member (member in contact with end of compression coil spring), 18a screw hole, 18b R-shaped portion (curved surface shape), 19 piston member, 20 valve member (part of control mechanism portion), 22 valve body , 23 valve seat, 23a through hole, 23b screw groove, 24 O-ring, 25 side hole, 26 stopper pin, 27 inner passage, 28 coil spring, 29 safety valve, 31 compression coil spring, 40 stopper Material (member in contact with the end of the compression coil spring), 40a frustoconical portion (inclined surface shape), 41 connection pins.

Claims (5)

作動油が充填される油室を備えるヒンジケースと、
前記ヒンジケースの一端側に配置されるとともに扉と連結されて該扉の開閉動作に伴って回転する回転軸と、
前記回転軸に固定設置される非円形形状をしたカム部材と、
前記カム部材の外周面と摺接可能に配置されるカムフォロワを備えることで該カム部材の回転運動に伴って前記ヒンジケース内を往復移動するスライドプレートと、
前記スライドプレートに接続するロッド部材と、
前記ロッド部材における前記スライドプレート接続側とは逆側の端部に設置され、前記油室を第１の油室と第２の油室に２分割するとともに前記油室内で往復移動自在に設置されるピストン部材と、
前記油室を形成する前記ヒンジケースの内壁面に形成されたストッパ形状部と前記ピストン部材との間に配置されることで、前記ピストン部材に対して常時一定方向の付勢力を及ぼす圧縮コイルばねと、
前記ピストン部材の往復移動に伴う前記第１の油室および前記第２の油室間での作動油の移動油量を調整することによって前記ピストン部材の移動速度を制御し、もって前記扉の開扉速度又は閉扉速度を制御する制御機構部と、
を備えるフロアヒンジであって、
前記圧縮コイルばねの端部と、当該圧縮コイルばねの端部と接触する部材とが、線接触するように構成されていることを特徴とするフロアヒンジ。 A hinge case having an oil chamber filled with hydraulic oil,
A rotating shaft which is arranged on one end side of the hinge case and which is connected to the door and rotates with the opening / closing operation of the door;
A non-circular cam member fixedly installed on the rotating shaft,
A slide plate that is provided with a cam follower that is slidably contactable with the outer peripheral surface of the cam member, and that reciprocates in the hinge case with the rotational movement of the cam member;
A rod member connected to the slide plate,
It is installed at an end of the rod member opposite to the slide plate connection side, divides the oil chamber into a first oil chamber and a second oil chamber, and is reciprocally movable in the oil chamber. A piston member,
A compression coil spring, which is arranged between the stopper member formed on the inner wall surface of the hinge case forming the oil chamber and the piston member, and always exerts an urging force in a fixed direction on the piston member. When,
The moving speed of the piston member is controlled by adjusting the moving oil amount of the working oil between the first oil chamber and the second oil chamber that accompanies the reciprocating movement of the piston member, thereby opening the door. A control mechanism unit for controlling the door speed or the door closing speed,
A floor hinge comprising:
A floor hinge characterized in that an end of the compression coil spring and a member that comes into contact with the end of the compression coil spring are configured to be in line contact with each other. 請求項１に記載のフロアヒンジであって、
前記圧縮コイルばねの端部と接触する部材が、前記圧縮コイルばねが及ぼす付勢力の方向に対して傾斜した斜面形状又は曲面形状を有していることを特徴とするフロアヒンジ。 The floor hinge according to claim 1,
The floor hinge, wherein a member that comes into contact with the end of the compression coil spring has an inclined surface shape or a curved surface shape that is inclined with respect to the direction of the urging force exerted by the compression coil spring. 請求項１又は２に記載のフロアヒンジであって、
前記ロッド部材における前記ピストン部材設置側で前記圧縮コイルばねの端部と接触する部材が、円錐台形状部を備え、当該円錐台形状部の一部が前記圧縮コイルばねの内周部に挿入されることで、前記圧縮コイルばねの位置決めがなされることを特徴とするフロアヒンジ。 The floor hinge according to claim 1 or 2,
A member of the rod member, which comes into contact with the end of the compression coil spring on the piston member installation side, has a truncated cone shape part, and a part of the truncated cone shape part is inserted into the inner peripheral portion of the compression coil spring. The floor hinge characterized in that the compression coil spring is positioned thereby. 請求項１又は２に記載のフロアヒンジであって、
前記ロッド部材における前記スライドプレート接続側で前記圧縮コイルばねの端部と接触する部材が、Ｒ形状部を備え、当該Ｒ形状部の一部が前記圧縮コイルばねの内周部に挿入されることで、前記圧縮コイルばねの位置決めがなされることを特徴とするフロアヒンジ。 The floor hinge according to claim 1 or 2,
A member of the rod member that contacts the end portion of the compression coil spring on the slide plate connection side has an R-shaped portion, and a part of the R-shaped portion is inserted into the inner peripheral portion of the compression coil spring. The floor hinge is characterized in that the compression coil spring is positioned. 請求項１〜４のいずれか１項に記載のフロアヒンジであって、
前記制御機構部の一部を構成する弁部材が、前記ロッド部材と前記ピストン部材との接続固定手段を兼ねて構成されることを特徴とするフロアヒンジ。 The floor hinge according to any one of claims 1 to 4,
A floor hinge, wherein a valve member that constitutes a part of the control mechanism unit is also configured as a connecting and fixing means for connecting the rod member and the piston member.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54113522A (en) * 1978-02-01 1979-09-05 Gkn Sankey Ltd Plug unit
JPS563777A (en) * 1979-06-15 1981-01-16 Dorma Baubeschlag Automatic door closer
JPS5981832U (en) * 1982-11-24 1984-06-02 本田技研工業株式会社 Buffer coil spring support structure
JPS61124409U (en) * 1985-01-24 1986-08-05
JPH02175474A (en) * 1988-12-28 1990-07-06 Kayaba Ind Co Ltd Stay damper
JPH0557474U (en) * 1991-12-27 1993-07-30 カヤバ工業株式会社 shock absorber
JP2014092181A (en) * 2012-10-31 2014-05-19 Showa Corp Pressure buffering device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54113522A (en) * 1978-02-01 1979-09-05 Gkn Sankey Ltd Plug unit
JPS563777A (en) * 1979-06-15 1981-01-16 Dorma Baubeschlag Automatic door closer
JPS5981832U (en) * 1982-11-24 1984-06-02 本田技研工業株式会社 Buffer coil spring support structure
JPS61124409U (en) * 1985-01-24 1986-08-05
JPH02175474A (en) * 1988-12-28 1990-07-06 Kayaba Ind Co Ltd Stay damper
JPH0557474U (en) * 1991-12-27 1993-07-30 カヤバ工業株式会社 shock absorber
JP2014092181A (en) * 2012-10-31 2014-05-19 Showa Corp Pressure buffering device

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