JP3561305B2

JP3561305B2 - Fixed structure of hinge support shaft

Info

Publication number: JP3561305B2
Application number: JP30583694A
Authority: JP
Inventors: 眞行宮野; 和邦明石
Original assignee: 極東金物工業株式会社; 株式会社共栄金物製作所
Priority date: 1994-12-09
Filing date: 1994-12-09
Publication date: 2004-09-02
Anticipated expiration: 2019-09-02
Also published as: JPH08158733A

Description

【０００１】
【産業上の利用分野】
本発明は、蝶番の下側の筒部内で保持される支持軸の下端部を、座金を利用して筒部内に固定し、支持軸ブレ防止と抜け止めを図る蝶番の支持軸の固定構造に関する。
【０００２】
【従来の技術】
本発明の前提となる公知技術として、実開平６ー１６７４号公報に示す蝶番がある。
【０００３】
かかる従来技術の蝶番の支持軸は、２枚の取付板のうちの下側の取付板の筒部の上部内に保持部材を介して保持されており、この支持軸の上半分が上側の取付板の筒部内に嵌装されている凹形カム内に挿通することによって上下の取付板が連結し、かつこの状態において凸状カムと凹状カムとが摺接しており、一方の取付板を回動させると、この凸状カムと凹状カムとの摺接面が移動して上方の取付板が多少上方に移動しながら回動し、また上方に移動した上方の取付板が自重で降下回動して元の位置に戻る構造のものである。
【０００４】
【発明が解決しようとする課題】
しかしながら、下側の筒部内に保持されている保持部材は樹脂成形品であり、しかも保持部材を筒部内に挿嵌して組み付ける構造上、保持部材，特にその下部側は筒部内に対してある程度の弛みが生じ易い。このため保持部材に挿嵌されている支持軸に横方向の強い押圧が加わると、支持軸は横方向にブレ易くなり、特に支持軸の下端部に僅かでも弛みがあっても支持軸の上端部では大きなブレになる。
このような状態の蝶番を利用して扉を取り付けると、また扉の自重によって必然的に蝶番の支持軸に横方向への押圧が加わるために、扉の上端部と扉枠との間に扉の傾きによる隙間が生じ、これが扉にガタ付きを発生させ、扉を傾かせて閉まりを悪くしている。
【０００５】
本発明はこれらの問題に対処するために提案されたものであり、一対の取付板のうちの一方取付板の側端に形成されている筒部内に、前記保持部材を介して支持軸の下半分を保持すると共に、この支持軸の下端部を、筒部の内壁の溝に係合する２枚の座金で固定したことにより、支持軸の下端部のブレを無くして、扉のガタ付きを防ぐと共に扉が傾いて閉まりが悪くなるのを防ぎ、支持軸の抜け止めを図ることが出来る蝶番の支持軸の取付構造に関する。
【０００６】
【課題を解決するための手段】
以上の目的を達成するために提供される本発明の第１の構成による蝶番の支持軸の取付構造は、
一対の取付板の側端に形成した上下の筒部内に、支持軸を軸装した保持部材を嵌装して支持軸を筒部内で保持する蝶番において、前記支持軸の下端部に座金を装着して、この座金の外縁を筒部の内壁に水平に周回させて形成した溝に係止させて、支持軸の下端部を固定するとともに、前記下側の筒部の内周壁に、前記溝と平行な別の溝をその下方に形成して、この別の溝にもうひとつの座金の外縁を係止させて、このもうひとつ座金に支持軸の下端面が接当するように構成したものである。
【０００７】
また、本発明の第２の構成による蝶番の取付構造は、
前記２枚の座金は、その周面を斜面にした皿形に形成し、その外縁から内側に向けて複数の切り欠きを形成しており、且つ支持軸の下端部に装着する座金の外端部を上向きに、その下方のもうひとつの座金の外端部を下向きにしたものである。
【００１０】
【作用】
本発明による蝶番の支持軸の固定構造によると、
前記支持軸の下端部に座金を装着して、この座金の外縁を筒部の内壁に接当させて支持軸の下端部を固定してあるために、支持軸のブレが大きく発生し易い支持軸の下端部のブレが押えられ、その結果として、この蝶番を取り付けた扉のガタ付きが防がれる。
【００１１】
また前記下側の筒部の内周壁に、前記座金の外縁を係止する溝を水平に周回させて形成してあるために、座金は確りと筒部内の溝内で係止され、係止位置がズレたり抜け落ちたりするようなことはない。
【００１２】
また、前記下側の筒部の内周壁に、前記溝と平行な別の溝をその下方に形成して、この溝に支持軸の下端面に接当する座金の外縁を係止してあるために、上下の座金は筒部内の決められた箇所で確りと固定され、また座金も抜け外れたりするようなことはない。
【００１３】
さらに、前記２枚の座金が、その周面を斜面にした皿形に形成して、その外縁から内側に向けて複数の切り欠きを形成して、且つ支持軸の下端部に装着した座金の外端部を上向きに、その下方の座金の外端部を下向きにして係止されているために、座金を筒部内に挿嵌するときに、前記切り欠きがあることによって、簡単に挿嵌出来、しかも容易に抜けることはない。
このように上下の座金が対向方向に押圧して支持軸の下端部の頭部を挟持しているために、支持軸は確りと固定され、横方向への弛みだけでなく縦方向への弛みも無くなり、支持軸の下端部を確りと固定することができ、この結果支持軸全体のブレが防がれる。
【００１４】
【実施例】
続いて本発明における蝶番の支持軸の固定構造の具体的な構成を添付図面に従って詳述する。なお添付図面に表した蝶番，特にその各部の形状及び大きさなどは、あくまでも例示であり、これに限定されるものではない。
【００１５】
図１は本発明の蝶番を示す分解斜視図、図２は支持軸に座金を取り付ける前の状態を示す斜視図、図３は座金の平面図と正面図、図４は支持軸に座金，保持部材，凸形カムを取り付ける手法を示す斜視図、図５は支持軸を下側の筒部内に挿入させて固定する前の状態を示す一部断面部分を含む正面図、図６は蝶番の組み付け手法を示す斜視図、図７の（ａ）は凸形カムの斜視図，（ｂ）は平面図，（ｃ）は底面図、図８は組み付け後の蝶番を示す正面図、図９は同じく正面断面図、図１０は上部の取付板が回動して筒部が上方に移動した状態を示す正面断面図、図１１の（ａ）〜（ｈ）は蝶番の取付位置の各例を示す略平面図である。
【００１６】
図１に示すように、本発明の蝶番Ｓは、一対の取付板２ａ，７ａの側端にそれぞれ筒部２ｂ，７ｂが形成された上側及び下側の蝶番本体部２，７と、下側の筒部７ｂ内に組み付けられるべく形成された支持軸４，凸形カム５，保持部材６，及び２枚の座金８，９と、上側の筒部２ｂ内に組み付けられるべく形成された一対の上蓋１及び凹形カム３の各部材で構成されている。
【００１７】
図２において、支持軸４は、その上端の頭部４ａ下方に一定長さの小径部４ｂが形成されており、その下方に大径部の軸本体４ｃが連続形成されており、この軸本体４ｃの下端部は大径の頭部４ｄが形成された１本の金属軸からなり、この支持軸４には、その上端から金属製の座金８が嵌装される。
【００１８】
図３の（ａ）及び（ｂ）の各図に示す座金８は上部側の座金を示しており、その中央に支持軸４の軸本体４ｃの径と等しくした開孔８ａが形成されており、等間隔ごとに外端部８ｂから内側に向けて切り欠かれており、この切り欠き８ｃ，８ｃ間の面部８ｄは、それぞれ斜め方向に曲折した斜面となっており、相反する方向の外端部８ｂ，８ｂ間の距離を、前記筒部７ｂの開孔の直径よりも、僅かであるが長くしてある。
【００１９】
後述する下部側の座金９も、上部側の座金８と同様のものである。
なお、図示した座金８は、面部８ｄが６方向の放射状に形成されているが、この方向の数は特に限定したものではなく、それ以上であっても構わない。
【００２０】
続いてこの座金８，９を利用して蝶番の各部の組立手法を説明する。
まず図２の状態から図４に示すように、前記上部側の座金８を、その外端部８ｂを上方に向けた状態で、前記支持軸４にその上方から強くカシメ入れ、支持軸４の下端部となる頭部４ｅに接当する位置に嵌挿支持させる。
【００２１】
続いて図５から図６に示すように、保持部材６を支持軸４に嵌装し、さらに続いてその上方から凸形カム５を支持軸４に嵌装してその下部５ｄを保持部材６の上端開孔（６Ｈ）内に突入させて、これらを一体化させ、先ず最初に支持軸４及び上部側の座金８を保持した保持部材６を下側の蝶番７の筒部７ｂ内に上部側から嵌め込んで、座金８の外端部８ｂを筒部７ｂの内周面の上部側に刻設されている輪形状の溝７ｃ内に突入させ、続いて下側の座金９を筒部７ｂの下側から突入させて、筒部７ｂの内周面の下部側に刻設されている輪形状の溝７ｄ内に突入させる。なお上下各座金８，９は，それぞれ支持軸６の下端部の頭部４ｅを上下側から押圧する方向に向けてあり、前述の各溝７ｃ，７ｄもこれに対応する間隔にしてある。
【００２２】
前記凸形カム５は、夫々１８０°対称位置に頂部５ｆと谷部５ｃとを有する旋状面５ａ，５ａを外周面５ｂの一端に形成した円滑な樹脂材で形成されており、その下部には小径で筒状の保持部５ｄが突出し、該保持部５ｄの外周面の上下方向には、等間隔毎に複数本のリブ５ｅ，５ｅを形成してある。かかる凸形カム５の中央部を貫通する開孔５Ｈの径は、前記支持軸４の軸本体の外径に対応させてある。
【００２３】
前記保持部材６は、前記凸形カム５と同様に、円滑な樹脂材によって成形されており、少なくとも前記蝶番７の開孔の径よりも大径に形成した鐔部６ａがその上端に形成してあり、該鐔部６ａの下部には、複数本の補強リブ６ｆ，６ｆを外周面に形成して、その下部に胴部６ｄが突出し、該リブ６ｆ，６ｆの外端面には小幅のリブ６ｅ，６ｅを形成してある。保持部材６の開孔６Ｈ内の内周面は３段に形成してあり、その上段の径は、凸形カム５の外周面５ｂの径に対応し、その中段の径とその高さは、凸状カム５の保持部５ｄに対応して、その外周面に凸形カム５の係合突起であるリブ５ｅ，５ｅが嵌まるように、被係合部である縦溝６ｂ，６ｂを平面視４５°間隔毎に形成しており、凸形カム５の下部が保持部材５に対し平面視４５°間隔の任意の回転角方向から挿入することができるようにしてある。なお保持部材６の下段の径は、前記支持軸７の径よりも小径に形成してある。
【００２４】
続いて図６に示すように、上側の蝶番２の筒部２ｂの開孔下部に、凹形カム３を嵌装する。凹形カム３も、前述の凸形カム５及び保持部材６と同様に、円滑な樹脂形成材で形成されている。
【００２５】
凹形カム３は、図７の各図に示すように、前記筒部２ｂの内径よりも大径に形成した鐔部３ｃの上部に、前記凸形カム５の嵌挿穴３Ｈを形成した円筒部３ｂとリブ３ｅとを突出しており、円筒部３ｂと補強リブ３ｅの外面に、小幅のリブ３ｇ，３ｇを形成しており、該円筒部３ｂの上部に、前記支持軸４の貫通穴３Ｈ’を形成した小径の円筒部３ａが突出しており、前記嵌装穴３Ｈの内周面には、前記凸形カム５の旋状面５ａ，５ａに摺接すべく、夫々１８０°対称位置に頂部３ｈと谷部３ｉとを有する旋状面３ｆ，３ｆを下方に向けて形成してある。
【００２６】
なお、この凹形カム３の鐔部３ｃの上面にも、前述と同様の嵌装位置を決める取付板７ａの下端７ｃに係合する切り欠き状の係合部３ｄを形成しており、この係合部３ｄを取付板７ａの下端７ｃの位置に合わせて、凹形カム３を筒部２の開口下部内に、リブ３ｇ，３ｇを潰すようにして嵌装させると、凹形カム３は空転することなく、しかも、筒部２内から落下することなく、確りと固定される。
【００２７】
このようにして、上方に突出した支持軸４に、旋状面３ｆ，３ｆを下方に向けた凹形カム３を筒部２ｂと共に上方から挿通させると、図８、図９に示すように、双方のカム３，５の旋状面３ｆ（３ｆ），５ａ（５ａ）が摺接した状態で、凹形カム３の嵌挿穴３Ｈ内に凸形カム５の上部が嵌まり込り、一対の蝶番Ｓが組み立られる。
【００２８】
なお図１０に示すように、このような状態から何れか一方の取付板２ａ（７ａ）を軸方向に１８０°回転させると、凹形カム３の旋状面３ｆ（３ｆ）が、凸形カム５の旋状面５ａ（５ａ）に摺接して上方に移動し、双方の旋状面３ｆ（３ｆ），５ａ（５ａ）の頂部３ｈ，５ｆが接当する高さまで、取付板２ａが上昇する。なお、この上方への移動と共に、係合部が前記支持軸４の小径部４ｂに沿って上方に移動し、それ以上の移動は、係合部が小径部４ｂ上端の頭部４ａの下面に接当して上方への移動が規制されるために、取付板２ａが取付板７側から抜け外れることはなく、これら上方への移動を規制する各部が、筒部２ｂ内に隠れているために、蝶番Ｓの外観はすっきりしたものとなる。
【００２９】
このように構成した蝶番Ｓの一方の取付板２ａを扉（不図示）に取付け、他方の取付板７ａをその支持壁（不図示）に取り付けるのであるが、凹形カム３の旋状面３ｆ（３ｆ）が凸形カム５の旋状面５ａ（５ａ）の全面に接面して、取付板２ａが低い位置にあるときに、扉が閉じるように取り付けるようにすれば、扉を手で開放させたときに、扉は取付板２ａと共に上方に移動しつつ開放する。そしてこの状態から手を扉から離せば、扉の自重によって凹形カム３が凸形カム５の旋状面５ａ，５ａに沿って下方に回転しつつ下方に移動し、扉は自動的に閉じる。
【００３０】
なお、凹形カム３の旋状面３ｆ，３ｆの頂部３ｈと谷部３ｉとの回動角度は、１８０°であるが、この１８０°の角度を維持しつつも、双方の取付板２ａ，３ａが重なる位置から取付板２ａ（３ａ）の何れか一方が行き過ぎた位置にこの１８０°の起点となるようにしてある。このために、本来この蝶番Ｓを取り付けた扉が多少行き過ぎた位置で停止するようにしてある。なおこの行き過ぎ角度を３°〜５°の範囲内に設定すると、扉を閉じたとき（あるいは開いたとき）に扉止め（不図示）に接当した状態が維持され、扉が自然に開閉することなく、確実に閉じた状態となる。なお、扉を取り付ける際に凸形カム５の取付位置を、１８０°反転させた位置に設定して保持部材６で保持すると、扉の自動開閉が逆方向になる。
【００３１】
このような構成を有する蝶番Ｓは、凸形カム５の保持位置を、少なくとも平面視４５°間隔で変更することができるように構成してあるために、図１１の（ａ）〜（ｈ）の一例において示すように、壁Ｒに対して如何なる扉Ｄの開閉方向に対しても対応して取り付ることが可能となる。
【００３２】
【発明の効果】
以上において詳述した本発明の蝶番支持軸の固定構造によれば、下側の筒部内で支持される支持軸の下端部を、２枚の座金を利用して筒部内で確りと固定することができるため、支持軸の上部側に横方向に強い押圧が加わっても支持軸がブレルようなことはない。特に蝶番に扉を取り付けた際にこの扉の重みによって支持軸を倒す方向への力が加わるが、これをこの座金と支持軸を保持している保持部材との双方によって確りと受け止めてブレを無くすようにしているため、扉が傾いたり、ブレたりするのを防ぐことが出来る。またこの結果、扉の傾きによる閉まり具合の悪さをなくすことが出来る。
【００３３】
なお、支持軸を固定する座金は上下２枚のもので形成されて、この２枚の座金で支持軸の下端部に形成されている頭部を対向方向から挟み込むようにして固定しているため、支持軸を確りと固定することができる。
【００３４】
さらに、この２枚の座金は筒部の内周面に形成されている輪形状の２本の溝に落ち込んで係止することができるようにしてるため、支持軸は上下方向にも確りと固定され、扉の重みで下方に生じ易い位置ズレを防ぐことが出来る。またこのように支持軸は簡単に外れないため、イタズラによる扉の抜き外しも未然に防ぐことが出来る。
【図面の簡単な説明】
【図１】本発明の蝶番を示す分解斜視図である。
【図２】支持軸に座金を取り付ける前の状態を示す斜視図である。
【図３】座金の平面図と正面図である。
【図４】支持軸に座金，保持部材，凸形カムを取り付ける手法を示す斜視図である。
【図５】支持軸を下側の筒部内に挿入させて固定する前の状態を示す一部断面部分を含む正面図である。
【図６】蝶番の組み付け手法を示す斜視図である。
【図７】（ａ）は凸形カムの斜視図，（ｂ）は平面図，（ｃ）は底面図である。
【図８】組み付け後の蝶番を示す正面図である。
【図９】同じく正面断面図である。
【図１０】蝶番の上部の取付板が回動して筒部が上方に移動した状態を示す正面断面図である。
【図１１】（ａ）〜（ｈ）は蝶番の取付位置の各例を示す略平面図である。
【符号の説明】
Ｓ蝶番
２ａ上部側の取付板
２ｂ上側の筒部
４支持軸
５凸形カム
６保持部材
７ａ下側の取付板
７ｂ下側の筒部
７ｃ上側の溝
７ｄ下側の溝
８上側座金
９下側の座金[0001]
[Industrial applications]
The present invention relates to a hinge support shaft fixing structure for fixing a lower end of a support shaft held in a lower cylindrical portion of a hinge to a cylindrical portion by using a washer to prevent the support shaft from moving and prevent the shaft from coming off. .
[0002]
[Prior art]
As a known technique on which the present invention is based, there is a hinge disclosed in Japanese Utility Model Laid-Open Publication No. Hei 6-1674.
[0003]
The support shaft of the prior art hinge is held via a holding member in the upper part of the tubular portion of the lower mounting plate of the two mounting plates, and the upper half of the supporting shaft is mounted on the upper mounting plate. The upper and lower mounting plates are connected by being inserted into a concave cam fitted in the tubular portion of the plate, and in this state, the convex cam and the concave cam are in sliding contact, and one of the mounting plates is rotated. When it is moved, the sliding contact surface between the convex cam and the concave cam moves, and the upper mounting plate rotates while slightly moving upward, and the upper mounting plate that has moved upward moves downward by its own weight. And return to the original position.
[0004]
[Problems to be solved by the invention]
However, since the holding member held in the lower cylinder portion is a resin molded product, and the holding member is inserted and fitted into the cylinder portion, the holding member, particularly, the lower side thereof is somewhat in contact with the inside of the cylinder portion. Tends to loosen. For this reason, when a strong lateral pressure is applied to the support shaft inserted into the holding member, the support shaft is apt to be blurred in the horizontal direction, and particularly, even if the lower end of the support shaft is slightly or loose, the upper end of the support shaft is It is a big blur in the club.
When the door is mounted using the hinge in such a state, and because the weight of the door inevitably applies a lateral pressure to the hinge support shaft, the door is located between the upper end of the door and the door frame. Creates a gap due to the inclination of the door, which causes the door to rattle, and tilts the door to make the door difficult to close.
[0005]
The present invention has been proposed in order to address these problems. In a cylindrical portion formed at a side end of one of a pair of mounting plates, a lower portion of a support shaft is provided via the holding member. While holding the half, the lower end of this support shaft is fixed with two washers that engage with the groove of the inner wall of the cylindrical portion, so that the lower end of the support shaft is not shaken and the backlash of the door is reduced. The present invention relates to a hinge support shaft mounting structure capable of preventing a door from tilting and closing from being deteriorated and preventing the support shaft from coming off.
[0006]
[Means for Solving the Problems]
The hinge supporting shaft mounting structure according to the first configuration of the present invention provided to achieve the above object,
A washer is attached to a lower end portion of the support shaft at a hinge for holding a support shaft inside the cylinder portion by fitting a holding member having a support shaft mounted therein into upper and lower cylindrical portions formed at side ends of a pair of mounting plates. Then, the outer edge of the washer is horizontally engaged with a groove formed by orbiting the inner wall of the cylindrical portion, and the lower end of the support shaft is fixed, and the groove is formed on the inner peripheral wall of the lower cylindrical portion. Another groove is formed underneath it, the outer edge of another washer is locked in this other groove, and the lower end surface of the support shaft comes into contact with this other washer. It is.
[0007]
Further, the hinge mounting structure according to the second configuration of the present invention includes:
The two washers are formed in a dish shape having a sloped peripheral surface, and a plurality of notches are formed inward from the outer edges thereof, and the outer ends of the washers attached to the lower end of the support shaft. The upper part is directed upward, and the outer end of another washer below is directed downward .
[0010]
[Action]
According to the hinge support shaft fixing structure of the present invention,
A washer is attached to the lower end of the support shaft, and the lower edge of the support shaft is fixed by contacting the outer edge of the washer with the inner wall of the cylindrical portion. Shaking of the lower end of the shaft is suppressed, and as a result, the hinged door is prevented from rattling.
[0011]
Further, since the groove for locking the outer edge of the washer is formed in the inner peripheral wall of the lower cylindrical portion so as to be horizontally circulated, the washer is securely locked in the groove in the cylindrical portion. There is no displacement or dropout.
[0012]
Another groove parallel to the groove is formed below the inner peripheral wall of the lower cylindrical portion, and the outer edge of a washer that contacts the lower end surface of the support shaft is locked in this groove. Therefore, the upper and lower washers are firmly fixed at predetermined locations in the cylindrical portion, and the washers do not come off.
[0013]
Further, the two washers are formed in a dish shape having a sloped peripheral surface, a plurality of notches are formed inward from an outer edge thereof, and a washer attached to a lower end portion of a support shaft is formed. Since the outer end portion is locked upward with the outer end portion of the washer below, the notch is easily inserted when the washer is inserted into the cylindrical portion. It does, and does not come off easily.
As described above, the upper and lower washers press in opposite directions to clamp the head at the lower end of the support shaft, so that the support shaft is securely fixed and not only slack in the horizontal direction but also in the vertical direction. And the lower end of the support shaft can be securely fixed, so that the entire support shaft is prevented from being shaken.
[0014]
【Example】
Next, the specific structure of the hinge support shaft fixing structure according to the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the hinges shown in the accompanying drawings, particularly the shape and size of each part thereof, are merely examples, and the present invention is not limited thereto.
[0015]
1 is an exploded perspective view showing a hinge of the present invention, FIG. 2 is a perspective view showing a state before a washer is attached to a support shaft, FIG. 3 is a plan view and a front view of the washer, and FIG. FIG. 5 is a perspective view showing a method of attaching a member and a convex cam, FIG. 5 is a front view including a partial cross-section showing a state before a support shaft is inserted into and fixed to a lower cylindrical portion, and FIG. 7A is a perspective view of a convex cam, FIG. 7B is a plan view, FIG. 7C is a bottom view, FIG. 8 is a front view showing a hinge after assembly, and FIG. FIG. 10 is a front cross-sectional view showing a state in which the upper mounting plate has rotated and the cylindrical portion has moved upward, and FIGS. 11A to 11H show examples of hinge mounting positions. It is a schematic plan view.
[0016]
As shown in FIG. 1, the hinge S of the present invention includes upper and lower hinge main bodies 2, 7 having cylindrical portions 2b, 7b formed at side ends of a pair of mounting plates 2a, 7a, respectively. The support shaft 4, the convex cam 5, the holding member 6, and the two washers 8, 9 formed to be assembled in the cylindrical portion 7b, and a pair of washers 8, 9 formed in the upper cylindrical portion 2b. It is composed of upper lid 1 and concave cam 3 members.
[0017]
In FIG. 2, the support shaft 4 has a small-diameter portion 4b of a fixed length formed below a head 4a at an upper end thereof, and a large-diameter shaft body 4c is continuously formed below the head portion 4b. The lower end of 4c is formed of a single metal shaft having a large diameter head 4d, and a metal washer 8 is fitted to the support shaft 4 from the upper end thereof.
[0018]
A washer 8 shown in each of FIGS. 3A and 3B shows an upper washer, and an opening 8a having a diameter equal to the diameter of the shaft body 4c of the support shaft 4 is formed at the center thereof. Are cut inward from the outer end portion 8b at regular intervals, and the surface portions 8d between the notches 8c, 8c are inclined surfaces bent in oblique directions, respectively. The distance between the parts 8b, 8b is slightly longer than the diameter of the opening of the cylindrical part 7b.
[0019]
A lower washer 9 described later is similar to the upper washer 8.
In the illustrated washer 8, the surface 8d is formed radially in six directions, but the number of directions is not particularly limited, and may be more.
[0020]
Next, a method of assembling each part of the hinge using the washers 8 and 9 will be described.
First, as shown in FIG. 4 from the state shown in FIG. 2, the washer 8 on the upper side is strongly caulked from above to the support shaft 4 with the outer end 8b thereof facing upward. It is inserted and supported at a position where it comes into contact with the head 4e serving as the lower end.
[0021]
Subsequently, as shown in FIGS. 5 and 6, the holding member 6 is fitted on the support shaft 4, and subsequently, the convex cam 5 is fitted on the support shaft 4 from above, and the lower portion 5 d is attached to the holding member 6. Into the upper end opening (6H) of the first member, and integrate them. First, the holding member 6 holding the support shaft 4 and the upper washer 8 is placed in the cylindrical portion 7b of the lower hinge 7 in the upper portion. And the outer end 8b of the washer 8 is inserted into a ring-shaped groove 7c formed on the upper side of the inner peripheral surface of the cylindrical portion 7b, and then the lower washer 9 is inserted into the cylindrical portion. The cylindrical portion 7b is made to protrude from below, and protrudes into a ring-shaped groove 7d formed on the lower side of the inner peripheral surface of the cylindrical portion 7b. The upper and lower washers 8, 9 are oriented in the direction of pressing the head 4e at the lower end of the support shaft 6 from above and below, respectively, and the above-mentioned grooves 7c, 7d are also arranged at corresponding intervals.
[0022]
The convex cam 5 is formed of a smooth resin material having spiral surfaces 5a, 5a having a top 5f and a valley 5c at 180 ° symmetrical positions formed at one end of an outer peripheral surface 5b. Has a small diameter, cylindrical holding portion 5d protruding, and a plurality of ribs 5e, 5e are formed at equal intervals in the vertical direction of the outer peripheral surface of the holding portion 5d. The diameter of the opening 5H penetrating the center of the convex cam 5 corresponds to the outer diameter of the shaft main body of the support shaft 4.
[0023]
The holding member 6 is formed of a smooth resin material similarly to the convex cam 5, and a tsuba portion 6 a formed at least larger in diameter than the opening of the hinge 7 is formed at an upper end thereof. A plurality of reinforcing ribs 6f, 6f are formed on an outer peripheral surface of the lower portion of the tsuba portion 6a, and a trunk portion 6d projects below the reinforcing ribs 6f, and a small width rib is formed on an outer end surface of the ribs 6f, 6f. 6e, 6e are formed. The inner peripheral surface inside the opening 6H of the holding member 6 is formed in three steps, the diameter of the upper step corresponds to the diameter of the outer peripheral face 5b of the convex cam 5, and the diameter and the height of the middle step are Corresponding to the holding portion 5d of the convex cam 5, the vertical grooves 6b, 6b, which are the engaged portions, are fitted so that the ribs 5e, 5e, which are the engagement protrusions of the convex cam 5, are fitted on the outer peripheral surface thereof. It is formed at intervals of 45 ° in plan view, and the lower part of the convex cam 5 can be inserted into the holding member 5 from an arbitrary rotation angle direction at intervals of 45 ° in plan view. The lower diameter of the holding member 6 is formed smaller than the diameter of the support shaft 7.
[0024]
Subsequently, as shown in FIG. 6, the concave cam 3 is fitted into the lower portion of the opening of the cylindrical portion 2b of the upper hinge 2. The concave cam 3 is also formed of a smooth resin forming material, like the convex cam 5 and the holding member 6 described above.
[0025]
As shown in FIGS. 7A and 7B, the concave cam 3 has a cylindrical shape in which a fitting hole 3H for the convex cam 5 is formed above a tsuba portion 3c formed to have a larger diameter than the inner diameter of the cylindrical portion 2b. The ribs 3e project from the cylindrical portion 3b and the reinforcing ribs 3e, and small-width ribs 3g, 3g are formed on the outer surfaces of the cylindrical portion 3b and the reinforcing ribs 3e. The small-diameter cylindrical portion 3a formed with a 'is protruded, and the inner peripheral surface of the fitting hole 3H is located at a 180 ° symmetrical position so as to be in sliding contact with the spiral surfaces 5a, 5a of the convex cam 5. The spiral surfaces 3f, 3f having a top 3h and a valley 3i are formed facing downward.
[0026]
A notch-shaped engaging portion 3d for engaging with the lower end 7c of the mounting plate 7a for determining the fitting position as described above is also formed on the upper surface of the tsuba portion 3c of the concave cam 3. When the concave cam 3 is fitted into the lower portion of the opening of the cylindrical portion 2 by aligning the engaging portion 3d with the position of the lower end 7c of the mounting plate 7a so as to crush the ribs 3g, 3g, the concave cam 3 becomes It is securely fixed without idling and without falling from the inside of the cylindrical portion 2.
[0027]
In this way, when the concave cam 3 with the spiral surfaces 3f, 3f facing downward is inserted into the upwardly projecting support shaft 4 together with the cylindrical portion 2b from above, as shown in FIGS. In a state where the spiral surfaces 3f (3f) and 5a (5a) of both the cams 3 and 5 are in sliding contact, the upper portion of the convex cam 5 is fitted into the fitting insertion hole 3H of the concave cam 3 and a pair of cams 3 and 5 is formed. Hinge S is assembled.
[0028]
As shown in FIG. 10, when one of the mounting plates 2a (7a) is rotated by 180 ° in the axial direction from such a state, the spiral surface 3f (3f) of the concave cam 3 becomes a convex cam. The sliding plate 5a (5a) 5 slides upward and moves upward, and the mounting plate 2a rises to a height at which the tops 3h, 5f of both the spiral surfaces 3f (3f), 5a (5a) contact. . With this upward movement, the engaging portion moves upward along the small-diameter portion 4b of the support shaft 4, and when the engaging portion moves further, the engaging portion moves to the lower surface of the head 4a at the upper end of the small-diameter portion 4b. The mounting plate 2a does not come off from the mounting plate 7 side because it is in contact with and the upward movement is regulated, and the respective parts that regulate the upward movement are hidden in the cylindrical portion 2b. In addition, the appearance of the hinge S is clear.
[0029]
One mounting plate 2a of the hinge S thus configured is mounted on a door (not shown), and the other mounting plate 7a is mounted on its support wall (not shown). (3f) is in contact with the entire surface of the spiral surface 5a (5a) of the convex cam 5, and when the mounting plate 2a is at a low position, the door is closed by hand so that the door is closed. When opened, the door opens while moving upward together with the mounting plate 2a. When the hand is released from the door in this state, the concave cam 3 moves downward while rotating downward along the spiral surfaces 5a, 5a of the convex cam 5 by the weight of the door, and the door is automatically closed. .
[0030]
Although the rotation angle between the top 3h and the valley 3i of the spiral surfaces 3f, 3f of the concave cam 3 is 180 °, while maintaining this 180 ° angle, both the mounting plates 2a, This 180 ° starting point is set at a position where one of the mounting plates 2a (3a) has gone too far from the position where 3a overlaps. For this reason, the door to which the hinge S is originally attached is stopped at a position where it is slightly too far. If this overshoot angle is set in the range of 3 ° to 5 °, the state of contact with the door stopper (not shown) is maintained when the door is closed (or opened), and the door opens and closes naturally. And the closed state is ensured. Note that when the mounting position of the convex cam 5 is set to a position that is inverted by 180 ° when the door is mounted, and is held by the holding member 6, the automatic opening and closing of the door is reversed.
[0031]
Since the hinge S having such a configuration is configured such that the holding position of the convex cam 5 can be changed at least at intervals of 45 ° in plan view, the hinge S in FIGS. As shown in one example, it is possible to attach the door R to the wall R in any opening / closing direction of the door D.
[0032]
【The invention's effect】
According to the hinge support shaft fixing structure of the present invention described in detail above, the lower end portion of the support shaft supported in the lower cylinder portion is securely fixed in the cylinder portion using two washers. Therefore, even if a strong lateral pressure is applied to the upper side of the support shaft, the support shaft does not look like a burr. In particular, when the door is attached to the hinge, the weight of this door applies a force in the direction of tilting the support shaft, but this is securely received by both the washer and the holding member holding the support shaft, and the shake is reduced. Because it is eliminated, the door can be prevented from tilting and shaking. In addition, as a result, it is possible to eliminate poor closing due to the inclination of the door.
[0033]
The washer for fixing the support shaft is formed of two upper and lower washers, and the head formed on the lower end portion of the support shaft is fixed between the two washers so as to sandwich the head from the opposite direction. Thus, the support shaft can be securely fixed.
[0034]
Furthermore, since the two washers can be dropped into and locked by two annular grooves formed on the inner peripheral surface of the cylindrical portion, the support shaft is securely fixed in the vertical direction. In addition, it is possible to prevent a positional shift that easily occurs downward due to the weight of the door. Further, since the support shaft is not easily detached in this way, it is possible to prevent the door from being removed due to mischief.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a hinge of the present invention.
FIG. 2 is a perspective view showing a state before a washer is attached to a support shaft.
FIG. 3 is a plan view and a front view of a washer.
FIG. 4 is a perspective view showing a method of attaching a washer, a holding member, and a convex cam to a support shaft.
FIG. 5 is a front view including a partial cross-sectional view showing a state before a support shaft is inserted into and fixed in a lower tubular portion.
FIG. 6 is a perspective view showing a hinge assembling method.
7A is a perspective view of a convex cam, FIG. 7B is a plan view, and FIG. 7C is a bottom view.
FIG. 8 is a front view showing the hinge after assembly.
FIG. 9 is a front sectional view of the same.
FIG. 10 is a front cross-sectional view showing a state in which a mounting plate above a hinge is rotated and a cylindrical portion is moved upward.
11A to 11H are schematic plan views showing examples of hinge mounting positions.
[Explanation of symbols]
S Hinge 2a Upper mounting plate 2b Upper cylinder 4 Support shaft 5 Convex cam 6 Holding member 7a Lower mounting plate 7b Lower cylinder 7c Upper groove 7d Lower groove 8 Upper washer 9 Lower Washer

Claims

In the upper and lower cylindrical portions formed on the side ends of the pair of mounting plates, a hinge for holding the support shaft in the cylindrical portion by fitting a holding member axially supporting the support shaft,
A washer is attached to the lower end of the support shaft, and the outer edge of the washer is engaged with a groove formed by being horizontally circulated on the inner wall of the cylindrical portion, and the lower end of the support shaft is fixed,
Another groove parallel to the groove is formed below the inner peripheral wall of the lower cylindrical portion, and the outer edge of another washer is locked in this other groove, and the other washer is supported by the other washer. A hinge support shaft fixing structure , wherein the lower end surface of the shaft is configured to abut .

The two washers are formed in a dish shape with the peripheral surface being inclined, and a plurality of notches are formed inward from the outer edge thereof,
2. The fixing of a hinge supporting shaft according to claim 1 , wherein an outer end of a washer attached to a lower end of the supporting shaft is directed upward, and an outer end of another washer below the washer is directed downward. Construction.
[0001]