JP4692993B2 - Sliding door latch mechanism - Google Patents

Description

この発明は、新規な引戸のラッチ機構（以下単にラッチ機構という）に係り、特に、構造が簡単で操作が容易なラッチ機構に関する。   The present invention relates to a novel sliding door latch mechanism (hereinafter simply referred to as a latch mechanism), and more particularly to a latch mechanism that is simple in structure and easy to operate.

ラッチ機構は、別の言葉で言えば仮締り錠のことで、提案されたものは数少ないが、下記特許文献１及び２にその一例が示されている。
特公昭６０−０２６９１４号 特開平１０−１３１５８７号 In other words, the latch mechanism is a temporary lock, and there are few proposed mechanisms, but examples thereof are shown in Patent Documents 1 and 2 below.
Japanese Patent Publication No. 60-026914 JP-A-10-131588

周知のように、蝶番に支持された所謂スイング扉は、傾斜面を備えたラッチボルトによるラッチ機構が一般的であり、かつ容易にスイング扉に装着することができる。   As is well known, a so-called swing door supported by a hinge is generally a latch mechanism using a latch bolt having an inclined surface, and can be easily attached to the swing door.

しかしながら、引戸のラッチ機構は、必要であると皆が認識しているにも拘らず、現在実用されているものは無いと言っても過言ではなく、その理由は、扉の自由側端縁が戸枠を掠めるように動くスイング扉と異なり、引戸の場合は閉扉時例えば戸先框と戸枠が単に当接するだけなので、ラッチ機構を働かせるための相対運動が存在しないことによると思われる。   However, it is not an exaggeration to say that there is nothing that is currently in practical use, even though everyone recognizes that the latching mechanism of the sliding door is necessary, because the free side edge of the door is Unlike a swing door that moves to give up the door frame, in the case of a sliding door, it is considered that there is no relative movement for operating the latch mechanism because, for example, the door tip and the door frame simply abut when the door is closed.

上記特許文献１及び２に記載されたものは、勿論その機能を発揮はするが、全体的に構造が複雑にならざるを得ない、等未だ改良の余地がある。   Although those described in Patent Documents 1 and 2 of course exhibit their functions, there is still room for improvement, such as the structure being inevitably complicated.

そこで、この発明は、構造が簡単で操作も容易である新規なラッチ機構を提供することを目的としている。   Therefore, an object of the present invention is to provide a novel latch mechanism that is simple in structure and easy to operate.

上記の目的を達成するため、請求項１に記載の発明は、引戸の閉鎖時相互に突き当たる引戸の戸先框及び戸枠の一方に装着される箱状のホルダと、他方に装着されるスリット付の受板とを有し、このホルダ内に、引戸走行方向に延在し、受板側の先端に上記受板のスリットに係入可能な鈎部を形成すると共に、後端にリリースレバーを装着したラッチ杆を、その長さ方向に沿う軸線の回りを回動可能に案内し、一方、受板側から見てこのラッチ杆を時計方向或いは反時計方向の一方に付勢し、他方、ホルダ内に、先端にラッチ杆の先端部を収納する偏平部を形成した鞘部材を設け、この鞘部材を、内側にラッチ杆を同軸に収納した状態でラッチ杆の長さ方向に一定量移動可能に案内すると共に受板方向に付勢し、以て、引戸が閉鎖されていない常態において鞘部材を最大限ホルダから突出させ、また、ラッチ杆の鉤部を鞘部材の扁平部に係合させてラッチ杆に回り止めを施し、引戸閉鎖時、ラッチ杆の鉤部をスリット内に挿入させた状態で鞘部材をホルダ内に押し込むことにより、上記鉤部を鞘部材の扁平部から解放して受板の裏側で一定量回動させてラッチ杆を受板に係止し、同時にラッチ杆の後端のリリースレバーを室内側に振り出すようにしたことを特徴とする。 In order to achieve the above object, the invention described in claim 1 includes a box-shaped holder attached to one of a sliding door door and a door frame that abut each other when the sliding door is closed, and a slit attached to the other. The holder has an attached receiving plate, extends in the sliding door traveling direction in the holder, and forms a collar portion that can be engaged with the slit of the receiving plate at the front end of the receiving plate, and a release lever at the rear end. The latch rod attached with is guided so as to be rotatable around an axis along its length direction, and when viewed from the receiving plate side, the latch rod is urged clockwise or counterclockwise, and the other In the holder, a sheath member having a flat portion for accommodating the tip of the latch rod is provided at the tip, and the sheath member is fixed in the length direction of the latch rod with the latch rod coaxially housed inside. It urges the support plate direction while movably guided, than Te, Do not sliding door is closed In a normal state, the sheath member is protruded from the holder as much as possible, and the latch ridge is engaged with the flat portion of the sheath member to prevent the latch 回 り from rotating, and when the sliding door is closed, the latch ridge is placed in the slit. By pushing the sheath member into the holder in a state of being inserted into the holder, the hook part is released from the flat part of the sheath member and is rotated by a fixed amount on the back side of the receiving plate to lock the latching hook to the receiving plate, At the same time, the release lever at the rear end of the latch rod is swung out indoors .

上記のように構成された請求項１に記載の発明によるラッチ機構は、鞘部材によりラッチ杆の鈎部を所定の角度位置に保ったまま、鈎部を受板のスリットに係入させ、受板により鞘部材をホルダに押込む動作でラッチ杆を回動させて鈎部を自動的に受板に係合させ、リリースレバーを操作することにより鞘部材を突出させて引戸を解放方向に押動するようにしたので、ラッチ機構の構造が簡単であると共に操作も容易である、という所期の効果を奏する。   The latch mechanism according to the first aspect of the present invention configured as described above is configured such that the collar portion is engaged with the slit of the receiving plate while the collar portion of the latch collar is maintained at a predetermined angular position by the sheath member. By pushing the sheath member into the holder with the plate, the latch rod is rotated to automatically engage the collar portion with the receiving plate, and the release lever is operated to project the sheath member and push the sliding door in the release direction. Since it moves, the structure of the latch mechanism is simple and the operation is easy.

引戸閉鎖時、受板が鞘部材をホルダ内に押込む動作を利用して受板のスリットに係入したラッチ杆の鈎部を解放し、以て以て鈎部を自動的に受板に係合させ、引戸を開けるときのリリースレバーの操作を利用して拘束された鞘部材を解放するようにしたので、構造が簡単になり、しかも操作も容易となった。   When the sliding door is closed, the receiving plate pushes the sheath member into the holder to release the latch ridge that is engaged with the slit of the receiving plate, so that the ridge automatically becomes the receiving plate. Since the restrained sheath member is released using the operation of the release lever when engaging and opening the sliding door, the structure is simplified and the operation is facilitated.

以下、この発明の実施例を図面を参照して説明する。
図１において符号１は箱状のホルダを、符号２は受板を夫々示し、図示の実施例においては、ホルダ１は引戸の戸先框に、受板２は引戸閉鎖時戸先框と突き当たる戸枠に装着されるものとする。 Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a box-shaped holder, and reference numeral 2 denotes a receiving plate. In the illustrated embodiment, the holder 1 hits the door-end rod of the sliding door, and the receiving plate 2 hits the door-tip rod when the sliding door is closed. It shall be attached to the door frame.

なお、ホルダ１が引戸の戸先框に埋設されるとき、その前端面が戸先框の表面と一致するものとする。   When the holder 1 is embedded in the door toe of the sliding door, the front end surface thereof coincides with the surface of the door toe.

ホルダ１の蓋板３の止めねじ４、４を外し、ホルダ１内に収容保持されている後述の部材を展開して示すと図２のようになり、ホルダ１を縦断すると図３に示す如くとなる。   When the setscrews 4 and 4 of the cover plate 3 of the holder 1 are removed and the members described below that are accommodated and held in the holder 1 are developed and shown in FIG. 2, when the holder 1 is cut vertically, as shown in FIG. It becomes.

これらの図に示すように、ホルダ１の高さ方向の中央部には有底で引戸の走行方向（図３で左右方向）に延在する案内洞５が、この案内洞５の上下には夫々有底でかつ平行な一対のばね案内洞６、６が形成されている。   As shown in these drawings, a guide cave 5 having a bottom and extending in the traveling direction of the sliding door (left and right in FIG. 3) is provided at the center of the holder 1 in the height direction. A pair of spring guide cavities 6, 6 each having a bottom and parallel are formed.

上記案内洞５内には、引戸走行方向に延在し、受板側の先端に鈎部を、後端にリリースレバー７を装着したラッチ杆８が、その長さ方向に沿う軸線の回りを回動可能に案内されている。   A latch rod 8 that extends in the sliding door traveling direction, has a collar portion at the front end on the receiving plate side, and a release lever 7 at the rear end extends around the axis along the length direction. It is guided so that it can rotate.

図示の実施例におけるラッチ杆８は、厚板材を例えばプレスによって打ち抜いた形状で、先端の鈎部は細長いラッチ杆本体の両側に突出してＴ字形に形成されているが、これは片側にのみ突出してＬ字形になったものでも良い。   The latch rod 8 in the illustrated embodiment has a shape in which a thick plate material is punched out by pressing, for example, and the flange portion at the tip protrudes on both sides of the elongated latch rod main body, and is formed in a T shape. It may be L-shaped.

このラッチ杆８の鈎部は、引戸閉鎖時前記受板２と係合して引戸を戸枠に一時的に係止するもので、この鈎部に対応して、受板２には例えば縦長のスリット９が開口している。   The hook part of the latch hook 8 engages with the receiving plate 2 when the sliding door is closed, and temporarily locks the sliding door to the door frame. The slit 9 is opened.

なお、戸枠に装着された受板２の裏側には、後述するようにラッチ杆の鈎部がスリット９と係合したとき鈎部と干渉しないように、図示しない空間部を確保しておくものとする。   In addition, on the back side of the receiving plate 2 attached to the door frame, as will be described later, a space portion (not shown) is secured so as not to interfere with the collar portion when the collar portion of the latch collar is engaged with the slit 9. Shall.

また、図示の実施例では、このラッチ杆８は次に述べる鞘部材１１内に収納された状態で、鞘部材１１を介してホルダ１に支持、案内されている。   In the illustrated embodiment, the latch rod 8 is supported and guided by the holder 1 via the sheath member 11 in a state of being accommodated in the sheath member 11 described below.

図２及び図３に示すように、鞘部材１１は、先端にラッチ杆８の先端部を収納する偏平部１１ａとこれに連接された筒部１１ｂとを一体に結合した筒状の部材である。   As shown in FIGS. 2 and 3, the sheath member 11 is a cylindrical member in which a flat portion 11 a that houses the distal end portion of the latch rod 8 and a cylindrical portion 11 b that is connected thereto are integrally coupled at the distal end. .

この鞘部材１１中に、ラッチ杆８の後端部を偏平部１１ａから通すようにしてラッチ杆８を挿入し、鞘部材の筒部１１ｂから後方に突き抜けたラッチ杆８の後端を、リリースレバー７の基端に開口した付番しない連結孔に固く填め合わせ、このようにしてラッチ杆８の後端にリリースレバー７を一体的に垂設する。   The latch rod 8 is inserted into the sheath member 11 so that the rear end portion of the latch rod 8 is passed through the flat portion 11a, and the rear end of the latch rod 8 protruding rearward from the cylindrical portion 11b of the sheath member is released. The release lever 7 is integrally suspended from the rear end of the latch rod 8 in such a manner that it is firmly fitted in an unnumbered connecting hole opened at the base end of the lever 7.

ちなみに、ホルダ１の後端部には案内スリット１３（図２参照）が形成されており、リリースレバーの自由端部はこの案内スリット１３に揺動可能に収納されている。   Incidentally, a guide slit 13 (see FIG. 2) is formed at the rear end of the holder 1, and the free end of the release lever is housed in the guide slit 13 so as to be swingable.

また、ラッチ杆の後端部に突起８ａ、８ａを対称的に突設し、一方、ホルダの案内洞５の後端部で突起８ａの前方にＵ字形の切欠を形成した仕切板１２を挿設し、この仕切板１２によってラッチ杆８の抜け止めを施すと共に、ラッチ杆８の回動を円滑に案内する。   In addition, protrusions 8a and 8a are provided symmetrically at the rear end of the latch rod, and a partition plate 12 having a U-shaped notch formed in front of the protrusion 8a at the rear end of the guide cave 5 of the holder is inserted. The partition plate 12 prevents the latch rod 8 from coming off and smoothly guides the rotation of the latch rod 8.

他方、前記鞘部材１１は、偏平部１１ａをホルダの前面開口と摺動可能に係合させ、筒部１１ｂを案内洞５と摺動可能に嵌合させた状態で、ホルダ１において、ラッチ杆８の長さ方向に移動可能に支持、案内する。   On the other hand, the sheath member 11 has a latch ridge in the holder 1 in a state where the flat portion 11a is slidably engaged with the front opening of the holder and the cylindrical portion 11b is slidably fitted to the guide cavity 5. 8 is supported and guided so as to be movable in the length direction.

また、ホルダ１内の前記ばね収納洞６、６内には、夫々圧縮コイルばねとしての作動ばね１３が弾装されており、鞘部材１１は、この作動ばね１３の弾力により前方に、すなわち受板２に近接する方向に付勢されている。   In addition, an operating spring 13 as a compression coil spring is elastically mounted in the spring accommodating cavities 6 and 6 in the holder 1, and the sheath member 11 is moved forward, that is, received by the elastic force of the operating spring 13. It is biased in the direction approaching the plate 2.

そのため、図１及び図３に示すように、鞘部材１１はホルダ１の前端面、すなわち、戸先框の表面から突出する。   Therefore, as shown in FIG.1 and FIG.3, the sheath member 11 protrudes from the front-end surface of the holder 1, ie, the surface of a door-end collar.

更にまた、鞘部材の筒部１１ｂの後端部外周面には一対の案内突起１１ｃ、１１ｃが対称的に突設されており、各案内突起１１ｃは、蓋板３（図２参照）或いはホルダの案内洞の内側面（図４参照）に夫々形成された水平方向に細長い案内溝１４に夫々摺動可能に係合している。   Furthermore, a pair of guide projections 11c and 11c are provided symmetrically on the outer peripheral surface of the rear end portion of the cylindrical portion 11b of the sheath member, and each guide projection 11c is formed on the cover plate 3 (see FIG. 2) or a holder. Are respectively slidably engaged with horizontally elongated guide grooves 14 respectively formed on the inner side surfaces (see FIG. 4) of the guide cave.

そのため、鞘部材１１に外力が作用しない常態における鞘部材の突出量、及び後述するように鞘部材１１が受板２によってホルダ内に押込まれるときの最大ストロークが夫々規定される。   Therefore, the protruding amount of the sheath member in a normal state where no external force is applied to the sheath member 11 and the maximum stroke when the sheath member 11 is pushed into the holder by the receiving plate 2 as described later are respectively defined.

また、図２及び図３に示すように、ホルダの底面に開口したばね孔１７（図３参照）内に収納され、リリースレバー７の基端のばね掛け突起７ａとばね掛けピン１５との間に弾装された圧縮コイルばねとしてのラッチばね１６の弾力により、ラッチ杆８及びこれと一体に結合されたリリースレバー７は図４において時計方向に付勢されている。   2 and 3, it is housed in a spring hole 17 (see FIG. 3) opened on the bottom surface of the holder, and between the spring hooking protrusion 7a at the base end of the release lever 7 and the spring hooking pin 15. The latch rod 8 and the release lever 7 coupled integrally therewith are urged clockwise in FIG. 4 by the elastic force of the latch spring 16 as a compression coil spring elastically mounted on the lever.

しかしながら、鞘部材１１に外力が作用しない常態においては、鞘部材が受板方向に前進してその偏平部１１ａがラッチ杆８の鈎部と形状係合をするので、図４に示すように、ラッチ杆８はほぼ垂直な角度位置に保持され、リリースレバー７は図４に示す角度位置をとる。   However, in a normal state where no external force acts on the sheath member 11, the sheath member advances in the receiving plate direction and the flat portion 11a engages with the flange portion of the latch rod 8, so that as shown in FIG. The latch rod 8 is held at a substantially vertical angular position, and the release lever 7 takes the angular position shown in FIG.

上記のように構成されたこの発明の一実施例によるラッチ機構は、引戸が開いているときには、図１及び図３に示すように、受板のスリット９とラッチ杆８の先端鉤部が角度的に整合している。 In the latch mechanism according to the embodiment of the present invention configured as described above, when the sliding door is open, as shown in FIGS. 1 and 3, the slit 9 of the receiving plate and the tip flange of the latch rod 8 are angled. Consistent.

この状態で引戸が閉鎖方向（図１でＡ方向）に移動すると、先ず鞘部材の偏平部の先端開口端縁が受板２の表面に当接する。   In this state, when the sliding door moves in the closing direction (A direction in FIG. 1), the leading edge of the flat opening of the sheath member first contacts the surface of the receiving plate 2.

更に引戸が閉鎖方向に移動すると、図３から明らかなように、ラッチ杆の先端の鉤部を覆っていた鞘部材の偏平部１１ａがラッチ杆とは独立にホルダ１内に押し込まれていく。   When the sliding door further moves in the closing direction, as is apparent from FIG. 3, the flat portion 11a of the sheath member that covers the flange at the tip of the latch rod is pushed into the holder 1 independently of the latch rod.

その結果、引戸の閉鎖方向への更なる移動により、ラッチ杆８は引戸と一体に図１の矢印Ａ方向に進行し、受板２のスリット９を挿通して受板２の裏側に突き抜ける。   As a result, by further movement of the sliding door in the closing direction, the latch rod 8 advances in the direction of arrow A in FIG. 1 integrally with the sliding door, passes through the slit 9 of the receiving plate 2 and penetrates to the back side of the receiving plate 2.

すると、鞘部材の偏平部１１ａとラッチ杆８の鉤部との係合が外れ、偏平部によって図４に示す角度位置に保持されていたラッチ杆８が自由になる結果、前記ラッチばね１６（図２及び図３参照）の弾力により、受板２側から見てラッチ杆８が時計方向に所定の角度回動する（図５参照）。   Then, the engagement between the flat portion 11a of the sheath member and the flange portion of the latch rod 8 is released, and the latch rod 8 held at the angular position shown in FIG. The latch rod 8 is rotated clockwise by a predetermined angle when viewed from the receiving plate 2 side (see FIG. 5).

この所定の角度は、図示の実施例では、リリースレバー７の自由端部が蓋板３の付番しないスリットの底部と当接することにより一義的に定まる。   In the illustrated embodiment, the predetermined angle is uniquely determined when the free end portion of the release lever 7 comes into contact with the bottom portion of the slit that is not numbered on the cover plate 3.

図５に示す状態では、ラッチ杆８の鉤部が受板の裏側でスリット９と斜交するので、引戸と一体のラッチ杆が受板２に係止されることになり、引戸は閉鎖位置にロックされる。   In the state shown in FIG. 5, the hook portion of the latch rod 8 obliquely crosses the slit 9 on the back side of the receiving plate, so that the latch rod integrated with the sliding door is locked to the receiving plate 2, and the sliding door is in the closed position. Locked to.

引戸を再び開放するには、図５に示すように通常室内側に突出するリリースレバー７の自由端部を室外側に押し、図１の角度位置に戻す。   In order to open the sliding door again, as shown in FIG. 5, the free end of the release lever 7 that normally protrudes to the indoor side is pushed to the outdoor side and returned to the angular position of FIG.

すると、ラッチ杆８の鉤部が図４の角度位置に復帰すると同時に、作動羽１３、１３の弾力により鞘部材の偏平部１１ａがホルダ１から突出し、受板２からの反力により引戸を開放方向に押動すると共に、ラッチ杆の鉤部１１ａを覆ってラッチ杆８の回動の自由を奪う。   Then, at the same time as the collar portion of the latch rod 8 returns to the angular position shown in FIG. The latch rod 8 is pushed in the direction and covers the flange portion 11a of the latch rod, thereby depriving the latch rod 8 of freedom of rotation.

以降、引戸は受板２から自由になるので、取っ手に手を掛けて引戸を開ければ引戸を開放することができる。   Thereafter, since the sliding door becomes free from the receiving plate 2, the sliding door can be opened by placing the hand on the handle and opening the sliding door.

なお、図示の実施例ではホルダ１を引戸側に埋設するものとしたが、これとは反対に、ホルダ１を戸枠側に、受板２を戸先框側に夫々装着しても良いことは言うまでもない。   In the illustrated embodiment, the holder 1 is embedded on the sliding door side. On the contrary, the holder 1 may be mounted on the door frame side and the receiving plate 2 may be mounted on the door end side. Needless to say.

ホルダと受板とを取り出して示す外観斜視図で、引戸が開いている場合を示す。It is an external appearance perspective view which takes out and shows a holder and a receiving plate, and shows the case where the sliding door is open. ホルダ側の諸構成部材を展開して示す外観斜視図。The external appearance perspective view which expands and shows the various structural members by the side of a holder. ホルダの縦断面図。The longitudinal cross-sectional view of a holder. 受板側から見たホルダの正面図。The front view of the holder seen from the receiving plate side. 図１と同様の外観斜視図で、引戸の閉鎖及びロック状態を示す。It is an external appearance perspective view similar to FIG. 1, and shows a closed and locked state of the sliding door.

符号の説明Explanation of symbols

１ ホルダ
２ 受板
３ 蓋板
４ 止めねじ
５ 案内洞
６ ばね収納洞
７ リリースレバー
８ ラッチ杆
９ スリット
１１ 鞘部材
１１ａ 偏平部
１１ｂ 筒部
１２ 仕切板
１３ 作動ばね
１４ 案内溝
１５ ばね掛けピン
１６ ラッチばね
１７ ばね孔 DESCRIPTION OF SYMBOLS 1 Holder 2 Receiving plate 3 Cover plate 4 Set screw 5 Guide cavity 6 Spring accommodation cavity 7 Release lever 8 Latch rod 9 Slit 11 Sheath member 11a Flat part 11b Cylindrical part 12 Partition plate 13 Actuating spring 14 Guide groove 15 Spring hook pin 16 Latch Spring 17 Spring hole

Claims (1)

引戸の閉鎖時相互に突き当たる引戸の戸先框及び戸枠の一方に装着される箱状のホルダと、他方に装着されるスリット付の受板とを有し、このホルダ内に、引戸走行方向に延在し、受板側の先端に上記受板のスリットに係入可能な鈎部を形成すると共に、後端にリリースレバーを装着したラッチ杆を、その長さ方向に沿う軸線の回りを回動可能に案内し、一方、受板側から見てこのラッチ杆を時計方向或いは反時計方向の一方に付勢し、他方、ホルダ内に、先端にラッチ杆の先端部を収納する偏平部を形成した鞘部材を設け、この鞘部材を、内側にラッチ杆を同軸に収納した状態でラッチ杆の長さ方向に一定量移動可能に案内すると共に受板方向に付勢し、以て、引戸が閉鎖されていない常態において鞘部材を最大限ホルダから突出させ、また、ラッチ杆の鉤部を鞘部材の扁平部に係合させてラッチ杆に回り止めを施し、引戸閉鎖時、ラッチ杆の鉤部をスリット内に挿入させた状態で鞘部材をホルダ内に押し込むことにより、上記鉤部を鞘部材の扁平部から解放して受板の裏側で一定量回動させてラッチ杆を受板に係止し、同時にラッチ杆の後端のリリースレバーを室内側に振り出すようにしたことを特徴とする引戸のラッチ機構。 It has a box-shaped holder that is attached to one of the sliding door and the door frame that abut against each other when the sliding door is closed, and a receiving plate with a slit that is attached to the other. A latch ridge with a release lever attached to the rear end is formed around the axis along the length direction. A flat portion that guides the rotation and urges the latch rod in the clockwise or counterclockwise direction when viewed from the receiving plate side, and stores the tip of the latch rod at the tip in the holder. the sheath member formed with provided the sheath, to urge the support plate direction with a constant amount movably guided in a state of accommodating the latch rod coaxially inside the length of the latch rod, Te following, In a normal state where the sliding door is not closed, the sheath member protrudes from the holder as much as possible. , Engage the collar of the latch rod with the flat part of the sheath member to lock the latch rod, and when closing the sliding door, push the sheath member into the holder with the collar rod of the latch rod inserted into the slit As a result, the hook part is released from the flat part of the sheath member and is rotated by a certain amount on the back side of the receiving plate to lock the latching hook to the receiving plate, and at the same time, the release lever at the rear end of the latching hook is moved to the indoor side. A sliding door latching mechanism characterized by swinging out .

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