JPH03166474A - Lock device - Google Patents

Abstract

PURPOSE:To ensure locking state by vertically moving the projection part on the top end of a spring piece along the bottom of a heart-shaped channel, carving the heart-shaped channel in an independent cam plate, and laterally moving the cam plate. CONSTITUTION:A locking member 2 having a pair of holding claws 3,3, is received in a case 1 in such a manner as to be capable of sliding. A spring is mounted to energize the locking member 2 in an opening part 6 direction, and a cam plate 5 is mounted to regulate the open and close locking state of the holding claws 3,3. Collars 7, 7 are provided on the left and right outer circumferential surfaces of the opening part 6, a notch 9 is provided in such a manner as to never intersect a guide long hole 8 provided on the upper surface wall, a cut spring piece 10 is provided on a part of the wall, and a projection part 11 is provided on the free end side inner surface of the spring piece 10. The holding claws 3 are extended from both side parts of the shock end part of the locking member 2 through a hinge part 15.

Description

【発明の詳細な説明】 木一発明は，例えば開閉自由に蝶着される屏等を閉塞状
態に拘束する場合に右利に使用されるロック装置に間す
るもので、特にこの発明は扉に設ける例えば係合体等の
押圧部材のＭｌの押付けを受けたときロック状態が得ら
れ、第２の押付けを受けたときこのロック状態を解除し
屏等を開放できるようにしたロック装置に関する． 従来から同一方中に２度押込み、そのうち最初の押込み
でロック状態を得、次の押込みでこのロック状態を解除
するようにしたロック装置に関しては既に実用化され知
られるところとなっている． この口７ク装置については幾つか構造の異るものが提案
されているが，その代表的なものに回転カム板を応用し
たものと、ハー′ト形の一方向にのみ進行が可能な溝に
バネ性を有した係合ピンを滑合させたハート溝形のもの
とが知られている． 前者のロック装置はケースとこのケースに抜差方向に摺
動する摺動体を備え、摺動体には２つの保合部を有した
長円形状の回転カム板を軸承し，常にはこの回転カム板
の長さを摺動体に揃えておき、第１の押込みによって摺
動体がケース内部に侵入したときカム板の先端側に位置
する切欠き状の保合部にケースに設ける突起を突き当て
僅かに回転させて後端側の同じ切欠き形或した係合部を
摺動体から横にづらし，次に摺動体がバネ力で戻るとき
この後端側の保合部をケースに設ける係止部に係合させ
て摺動体の戻りを準止しロック状態とする一方，次の押
込みによって摺動体がケース内部に更に入るのを利用し
て前記突起を先端側の係合部に再び当て＼カム板を僅か
に回転させ，上記後端側の係合部を外してロック状態を
解除することができるようになっており、この２度の押
込みでロツクとその解除を行い，この間回転カム板を半
回転させる構造としたものである． 一方，後者はハート形の溝を設けたカム板とこの溝に滑
合するバネ性を有した係合ピンから構威されるもので，
ハート形の溝は一方向にのみ進行が可能なように溝の底
部に斜面と段差を数個所設けてこれに上記係合ピンの先
端を押付け状態で滑合させ．第１の押込みによってこの
係合ピンを溝に沿ってハート形の谷部に誘導し，ここに
係合させてロック状態とする一方，次の押込みのときこ
の谷部から外して元の状態に戻し、ロックを解除する構
造としたものである． このタイプの異る２つの装置は共に実用化されているが
，前者は回転カム板の僅かな回転を誘い出して係合部の
保合を可能とし，ロック状態を得又このロックを解除す
ることから各部間の位置関係に高い精度が要請され，こ
とに小型の装置としたときには小さな製造誤差によって
も誤作動を生ずる問題があった．またこの回転カム板型
のロック装置は操作時のクリック感，即ちカチ、カチと
言った感触が得られないため使用者に操作感が残らず，
これがため視覚的に確認作業を要する等の難点があった
． 一方、後者のハート溝形のロック装置は溝に滑合させた
保合ピンが溝の底に設けた斜面を登って段差で落込み，
このとき係合ピンの先端が底にカチッと打当るためハー
トの谷部に係合してロック状態となったとき，また次に
この谷部を外れてロックを解除したとき，確かなクリッ
ク感が得られることによって充分な操作感が得られるが
、反面従来提供されているこの種ハート溝形のロック装
置は係合ビンに複雑な勤・作を行わせる関係から構造上
複雑なものとななっていた． 即ち，上記ハート形の溝に滑合する保合ビンは操作の際
、ハートの形状に沿ってビンの先端を左右横方向に首３
８Ｍ勤させるのに併せ，この先端を常にバネ力をもって
溝の底に摺接させ、この底に設ける斜面と段差に従って
上下動させなければならないことから捩れに強い例えば
、鋼線のようなものでなければならず、また併せてバネ
力をもって溝の底に押付ける別の手段を付帯させなけれ
ばならないことから部品相互の組合せが厄介である外、
部品数も多くなり必然的に小型化の妨げとなっていた． 本発明は上記の如く従来のロック装置における欠陥に鑑
み研究開発されたもので，その特徴とするところは前記
従来の装置においてバネ性を有した一つの係合ピンに負
わせていた八一ト形に従っての左右方向の首振り運動と
、ハート形溝の底に設ける勾配と段差に従って生ずる上
下運動とを切離し，先ず係合ビンに相当するバネ片の先
端に設ける突起部には専らハート形溝の底に沿うことに
よって上下の運動のみを負わせ，ハートの形状に沿うこ
とによって左右方向に横振りする運動についてはハート
形溝を独立したカム板に刻設してこのカム板を左右方向
に自由に移動できるように設けることによって処理し、
２つの異る方向の運動を２つの手段を介挿することによ
って振分け，それぞれの運動を一面的に単純化し、併せ
て個々の手段の単純化を図り，これによって製造が容易
な，しかも精度の高いロック装置を提供できるようにし
たことにある． 以下，本発明を図示する実施例につき説明し，その特徴
とするところを詳述することにする． ここに示した実施例は本発明を扉の閉塞具として具体化
した一例を示したもので，この実施例の説明を通して特
徴を明らかにする．図面第１図は木発雪に係る装置の平
面図で，第２図は゛底面図、第３図は正面図、第４図は
背面図，第５図は右側面図，第６図は左側面図を示し、
第７図は中央縦断左側面図を示している．この発明に係
るロック装置はケース１と，ケース内に摺動可能に収め
られるここでは一対の抱持爪３．３を有した係止部材２
と、この係止部材をケースの開口部方向へ付勢するバネ
４と、ケース１とこれに収まる係止部材２との間に介挿
され係止部材の摺動を規制して上記対をなす抱持爪３，
３の開閉ロック状態を規制するカム板５から構成され、
このうち図示する実施例ではバネ４を除く全ての構成部
分がナイロン樹脂等の熱可塑性の合成樹脂を素材にして
個別に成形される． さて、図面に示した様にケース１は一端を開口６させ、
奥行きを深くした箱形に形成してあり、開口部６の左右
の外周面には鍔７．７を設け、上面壁には開口部に近い
位置から奥に向って中央部に縦の案内長孔８を設け、更
にこの長孔に交わらないように上面壁の中央部には略Ｖ
字形の切込み９を設（ナて壁の一部を切出しバネ片ｌＯ
を設けると共にこのバネ片の自由端側内面に内方に向っ
て突出する突起部１１を設けている．そして，ケースの
左右両側面には一部を切欠いて外方に突き出し前記鍔７
．７と対向する係止爪１２，１２を設け、更に奥の内壁
面には開口部６に向って突出す棒状をなしたバネ４を装
着するための装着部１３が設けてある． 係止部材２はブロック状に形威してその一端を衝合端部
１４とすると共に、この衝合端部の両側部から肉薄のヒ
ンジ部１５．１５を介して抱持爪３　３を向い合せに延
設し．更にブロック状の本体部分に後方に向って開放す
る略断面円形状をなす空腔部ｌ６を設け、その底部にパ
ネ４の係止突起１７を設けている．そして，本体部分の
上面には衝合端部１４に近い部分の中央部に突起ｌ８を
設けると共に，この突起を避けた後方部分に横向きの直
線状の案内条溝１９を設けている．一方、カム板５は矩
形の板状に形成してあり、下面には上記係止部材２に設
ける案内粂溝１８に滑合させる横方向に長さを有する突
条２０を備え、上面には中央部に略ハート形をなす***
部２１を設けてこの***部の周面に／＼一ト形に沿う通
路２２を設けている． 通路２２は後述する様にケース１のバネ片先端に設けた
前記突起部１ｌを滑合させ，これを一方向に誘導するこ
とによって係止部材２に備えた抱持爪３　３を係合状態
に，又係合を解除した状態に変換させるもので，この通
路は第ｌ２乃至１４図に詳示する如く中央部の***部２
ｌを中心にして一端に前記突起部ｌ１を受け入れる受け
入れ部２２ａを，更に***部２１の一辺に沿って設ける
斜面部２２ｂ，次にこの斜面部の後端段差部２２ｃを越
えて第２の斜面部２２ｄ、そしてこの斜面部の後端の段
差部２２ｅから八一ト形***部の谷部である係合部２３
へと続けてあり，更に第３の斜面部２２ｆから段差部２
２ｇへ、そして***部２１の反対側の側面に沿って設け
る斜面部２２ｈから次の段差部２２ｉを越えて再び受け
入れ部２２ａに至るちょうど***部２ｌを一周する順回
路として形威してあり，上記各斜面部と段差部を交互に
組合せることによって常にバネ片１０の突起部１１が一
方向にのみ，即ち第１３図に示した矢符方向へのみ進行
できるようにしてその途中に設ける係合部２３に係合し
，また解除できるようにしてある． この一方向に循環する通路２２を一面に設けたカム板５
は前記係止部材２の上面に乗せ、組合せた状態でケース
１の開口部６から押込み，これによって一つの装置に組
立られる．前記第１図から第７図はこの組立完威状態を
示している． この組立関係を更に詳述すると、先ず上述した様に係止
部材２の上面にカム板５を乗せ，係止部材に設けた案内
条ｙｔ１９に突条２０を滑合させて組合せたところで空
腔部ｌ８にコイル状のバネ４を嵌装し，その一端を係止
突起１７に嵌合させる．次に，カム板とバネを組付けた
係止部材をケース１の開口部６から挿入し，先端から突
き出るバネ４の端部をケース内部に設ける棒状の装着部
ｌ３に嵌合せ、七のま＼この装着部ｌ３を空腔部ｌ９に
受け入れるようにして係止部材の全体をケースの内部に
押入れるのである． このとき，係止部材の上面に設ける突起１８が開口部゜
６の上面に当接するが，ケースの素材の弾性を利用して
上面を押上げるようにして無理に潜入させると，突起ｌ
８はケースの上面に設ける縦の案内長孔８に滑合し、押
上げられた上面は復元して係止部材２の抜出しを阻止す
ることになる． この様にしてケース内部に収められた係止部材は縮設し
たバネ４の村勢によって常時開口部６方向に押圧され、
上記突起１Ｂを案内長孔８の一端に衝合させた状態に保
持される．そして、この状態のとき衝合端部ｌ４を開口
部６に一致させ，これより延設した抱持爪３，３を開口
部６の外で開放した状態に保つことになる．かくして、
ケース１内部に係止部材２，カム板５を収容し組立ちれ
た本発明装置は、扉の閉塞手段として使用されるとき，
扉を蝶着するキャビネット等の開口部に装置し、扉の開
閉端側背面部に備える係合体を対の抱持爪３，３に捕え
て扉の開放を阻止することになる．第１５図乃至第ｔＳ
Ｖ！Ｊは木発明のロック装置の使用と操作時の作動状態
を示したもので．次にこれら図面に従って使用並びに作
動の実際を詳述することにする． 本発明装置は上述した様に屏の閉塞手段とする場合，こ
の扉を蝶着するキャビネット等の開口部を形戊する板部
ハに取付用の透孔２５を開設し、この透孔に前面よりケ
ース１を押入れ、開口部６の左右外側面に設けた鍔７．
７を透孔内部の拡張部分に嵌め入れるのに併せて左右両
側面部に設けた係止爪１２．１２を通過させ，鍔７とこ
の係止爪１２で開口部２５の縁を内外から挟み付けその
装着を行う．その一方、扉２Ｂには開閉自由端の背面部
に先端を膨径させて保合部を備えた係合体２７を取付け
、上記装着した本発明装置に対向させる． 第１５図はこの取付状態を示すと共にロック直前におけ
る姿を示したもので，係止部材２の衝合端部１４は゛ケ
ース１の開口部６に一致し、これより延設した２つの抱
持爪３．３は開口部、の外で八の字形に開放し、係合体
２７の侵入に備えられる． この状態において扉２Ｂの閉塞操作によって係合体２７
が突き進められると，係合体の先端が係止部材２の衝合
端部１４に先ず当接し，その押込みによって係止部材は
バネ４を収縮させながらケースｌの奥へと押込められ、
これに伴ってケー？の開口部６の外で開放していた２つ
の抱持爪３．３が開口部の縁で閉じ合され，係合体２７
の膨径係合部を抱持することになる．第１８図はこの状
態を示したもので，このとき係止部材２の後退に伴って
上面に乗ったカム板５がケースの奥に入り込み，ケース
の上面に設けたバネ片！Ｏの突起部１１がハート形通路
２２の受け入れ部２２ａに達し、更に係止部材の押込み
に伴うカム板５の侵入よよってこの突起部１１は第１の
斜面部２２ｂに乗り上ると共に***部２１の一辺に沿っ
てカム板５の中央部へと深く喰い込むことになる． この斜面部２２ｂに突起部１１が乗上るとき、バネ片！
Ｏが撓むことから突起部１１は斜面に沿って浮き上るが
，左右方向には移動しないため、***部２１の傾斜する
一辺に衝合したときカム板５は係止部材の案内条溝１９
に滑合させた突条２ｏを案内に右方に移動し突起部１１
の乗り上げを許すことになる．第１６図は正しくこのと
きにおける状態を示している． 次に、第１７図は上記の状態から押込みが更に進行して
抱持爪３，３が開口郁６の内部に完全に入り込み５保合
体２７を抱持した状態を示したもので，カム板５の通路
２２に侵入した突起部１１は段差部２２ｃを越え、更に
第２の斜面部２２ｄを越えて次の段差部２２ｅに落込み
、この段差部の傾斜に沿って***部２１の谷部である保
合部２３に係合する． 突起部１１が上記段差部２２ｅを越えて落込んだとき、
係止部材２はケース１の最深部に達してそれ以上の押込
みが不能な状態となる．従って、これを契機に係止部材
の押込みを止めると、バネ４の村勢で戻されるため前記
突起部１１は段差部２２ｅとの傾斜に誘導されて自動的
に上記保合部２３に係合することになる．そして、この
誘導に伴ってカム板５は案内条溝ｌ８をガイドに再′び
係止部材２の上面中央部に横移動することになる． この第ｌ７図に示した状態は本発明装置のロック時を示
しており、扉２６は閉塞状態となる．次に扉を開放する
場合は再び扉の表面を押して係合体２７を係止部材２に
押付けると、係合状態が解除され開放されることになる
． 第１８図は解除のため係合体２７を再び押付けた状態を
，そして、第１９図はこの押付けを開放して突起部１１
をカム板の通路２２から外す途中を示したものである． 先ずロック解除のため係合体２７を再び押付けると，こ
れに伴って係止部材２がケースの奥に向って移動するた
め係合部２３に係合した突起部１１はバネ片１０を上に
撓ませながら第３の斜面部２２ｆを乗り上げ，次に控へ
る段差部２２ｇに落込むことになる． この突起部１１の落込みと同時に係止部材２は先端部を
ケースの奥行内壁面に当接し，それ以上の押込みが不能
となる．これを契機にして係合体２７の押圧を解除する
と，バネ４の作用で係止部材２がケースの開口部６側に
戻され，併せて案内条ｆｉｌｅに突条２０を滑合させて
組付けられたカム板５が開口部側に戻されるため、突起
部１１は段差部２２ｇの傾斜に沿って***部２ｌの右方
に移動し、この***部から外れたところて第４の斜面部
２２ｈに乗り移り、これを乗り越え、次の段差部２２ｉ
に落込み前記受け入れ部２２ａに戻ることになる． このとき，カム板５は突起部１１が段差部２２ｇに落込
んだのち（第１８図に示す状態のとき）押圧の解除に伴
って段差部２２ｇの傾斜を案内に左方に移動し，***部
２ｌの裏側（図面において下側）から突起部１１を外す
．そして、この突起゛部が斜面部２２ｈに乗り上るとき
カム板は最も左に寄って突起部の通過を許し、この突起
部を受け入れ部２２ａに戻すことになる（第１９図）．
そして更に突起部ｌ１がカム板上から外れるときこのカ
ム板は再び係止部材上面の中央部に戻り、次のロック操
作に備えられることになる．以上説明の如く本発明装置
は構威されるもので、扉に設ける係合体を拘束するとき
，カム板５の通路２２に滑合する突起部ｌ１は通路２２
が略ハート形の形状に沿って設けられていることに関係
なく定位置にあって，即ちバネ片１０の先端部に−あっ
てこの通路の斜面部と段差部を順次乗越えながら係止部
２３に係合してロック状態に入り、また再び係合体の押
込みで係止部材２並びにカム板５がケースの奥に移動さ
れたとき上記係止部２３から外れて通路の斜面部と段差
部を越えて一方向に進行し、通路の元の位置に戻ってロ
ック状態を解除するものとなっている．このとき，上記
突起部１１はバネ片１０の作用で上下方向にのみ振られ
、通路上の斜面部と段差部を順次正確に乗越え一方向の
進行のみを許す働きを与え２通路２２がハート形に沿っ
て横方向に広がることについては案内条溝ｌ９に突条２
０を滑合させたカム板５を左右方向に移動させて吸収し
、突起部１１には専ら上下動方向にのみ動けばよいもの
としている． この様に本発明によれば，ハート形の通２８２２に滑合
する突起部ｌ！は上下動のみすればよいことからケース
１に設ける板バネ状のバネ片１ｏに直接設けたものであ
ってもよく、従って容易に形成できると共に、この突起
部１ｌを受けるカム板５は構造上は幾分複雑ではあるが
、プラズチックによる射出戊形が可能であり，量産にも
適するのでこれの製造は極めて容易であり前述従来品に
比較して廉価に提供できる利点がある， 勿論、本発明装置はケース１，係止部材２、カム板５、
バネ４の４者を個別に製造するが、その組立は前述した
様に係止部材２の上面にカム板５を乗せ，且つバネ４を
ケースｌとの間に挟むようにしてこの係止部材をケース
の開口部６から押込むだけで完威されるためその作業は
極めて単純なものである， 又，通路２２を形或するカム板５は略板状をなすもので
係止部材２の上面に接面した状態で組合されるものであ
り．この通路に滑合する突起部Ｌｌはケースｌの壁面の
一郁を切欠いて設けるバネ片に直接設けられるものであ
って大きな空間を占めるものでないので装置全体を小型
化することができ、従って家具を始め家電製品のキャビ
ネット類に備える扉等のロック装置として極゛めて効果
的に実施することができる．また、本発明装置は係合体
の拘束操作及び解除操作時にはケース内部における係止
部材の摺動と，カム板の横方向への移動並びに通路に沿
って滑合する突起部の上下運動が行われるに過ぎず、こ
れら個々の動作は単純なものであって誤作動の生ずる余
地が少ないため常に正確な働きが得られると共に故障，
損傷の危険が小さく安定した装置が得られる． 更に、木発明装置は操作時に通路を移動する突起部が通
路の底の凹凸に従って進行し，保合部に係合し，またこ
れから外れるときその都度バネ片の押圧を得てカチッ，
カチッとクリック感を発生させるため操作の確実性を触
覚的に得られるので好都合である． また，木発明装置はケースに鍔、係止爪を一体に設ける
ことによって単なる押込みで装着することができるので
一暦便利に使用することができる．[Detailed Description of the Invention] Kiichi's invention relates to a locking device used in a right-handed person when, for example, a folding screen that is hinged to open and close freely is restrained in a closed state. The present invention relates to a locking device which is provided in such a manner that a locked state is obtained when pressed by Ml of a pressing member such as an engaging body, and when a second pressed is received, the locked state is released and a folding screen or the like can be opened. Conventionally, locking devices have already been put into practical use and are well-known, in which the lock is pushed twice in the same direction, with the first push to obtain a locked state, and the second push to release the locked state. Several different structures have been proposed for this opening device, but the most representative ones include one that uses a rotating cam plate and one that uses a heart-shaped groove that can move in only one direction. A heart groove-shaped type is known, in which an engaging pin with spring properties is slidably fitted onto the pin. The former locking device is equipped with a case and a sliding body that slides on the case in the insertion/extraction direction.The sliding body supports an oval rotating cam plate with two retaining parts, and this rotating cam is always attached to the sliding body. Align the length of the plate with the sliding body, and when the sliding body enters the inside of the case by the first push, the protrusion provided on the case butts against the notch-shaped retaining part located on the tip side of the cam plate and slightly When the sliding body is rotated to move the same notch-shaped engaging part on the rear end sideways from the sliding body, and then the sliding body returns by spring force, this retaining part on the rear end side is attached to the case. While the sliding body semi-stops its return and becomes locked, the protrusion is again pressed against the engagement part on the tip side by utilizing the sliding body entering further into the case by the next push. The locked state can be released by slightly rotating the plate and releasing the engagement part on the rear end side. Pushing the plate twice locks and releases the lock, and during this time the rotating cam plate is It has a structure that allows it to rotate half a turn. On the other hand, the latter consists of a cam plate with a heart-shaped groove and a springy engagement pin that slides into the groove.
In order to allow the heart-shaped groove to move in only one direction, there are several slopes and steps at the bottom of the groove, and the tip of the engagement pin is slid onto these while being pressed. By the first push, the engagement pin is guided along the groove to the heart-shaped trough and engaged there to be in the locked state, while at the next push, it is removed from this trough and returned to its original state. The structure is such that it can be returned and unlocked. Two different devices of this type have both been put into practical use, and the former induces a slight rotation of the rotary cam plate to enable the engagement of the engaging portion to be held in place, thereby achieving a locked state and releasing this lock. Therefore, high accuracy was required in the positional relationship between each part, and even small manufacturing errors could cause malfunctions, especially when the device was small. In addition, this rotary cam plate type locking device does not provide a click feeling when operated, so the user does not feel any operational sensation.
This resulted in some difficulties, such as the need for visual confirmation. On the other hand, in the latter heart groove-shaped locking device, the retaining pin that is slid into the groove climbs the slope provided at the bottom of the groove and falls down at a step.
At this time, the tip of the engagement pin clicks against the bottom, so when it engages with the trough of the heart and becomes locked, and the next time it disengages from this trough to release the lock, you will feel a definite click. However, this kind of heart groove-shaped locking device that has been provided conventionally has a complicated structure because it requires the engaging pin to perform complicated operations. It had become. That is, when operating the retaining bottle that slides into the heart-shaped groove, the tip of the bottle is moved horizontally along the neck 3 along the heart shape.
In addition to the 8M shift, this tip must always be in sliding contact with the bottom of the groove with spring force, and must be moved up and down according to the slope and step provided at the bottom. In addition, since it is necessary to attach another means to press the groove against the bottom of the groove with spring force, it is difficult to assemble the parts.
The number of parts also increased, which inevitably hindered miniaturization. The present invention was researched and developed in view of the deficiencies in the conventional locking devices as described above, and is characterized by the fact that the conventional locking devices have an 81-mm locking pin that has a spring characteristic. We separated the horizontal swinging movement according to the shape from the vertical movement that occurs according to the slope and step provided at the bottom of the heart-shaped groove. By following the bottom of the cam plate, only vertical movement is applied, and by following the shape of a heart, horizontal movement is applied in the horizontal direction.A heart-shaped groove is carved into an independent cam plate, and this cam plate is moved in the horizontal direction. processing by providing free movement;
By distributing the motion in two different directions by inserting two means, each motion is simplified in one aspect, and the individual means are also simplified. This makes manufacturing easy and highly accurate. The reason is that we have been able to provide a high quality locking device. Hereinafter, embodiments illustrating the present invention will be explained, and its features will be explained in detail. The embodiment shown here is an example of the present invention as a door closure, and its characteristics will be clarified through the explanation of this embodiment. Figure 1 of the drawings is a plan view of the equipment related to snow removal, Figure 2 is a bottom view, Figure 3 is a front view, Figure 4 is a rear view, Figure 5 is a right side view, and Figure 6 is a left side view. Show a side view,
Figure 7 shows a left side view of the center longitudinal section. The locking device according to the present invention includes a case 1 and a locking member 2, which is slidably housed in the case and has a pair of holding claws 3.3.
A spring 4 biases this locking member toward the opening of the case, and a spring 4 is inserted between the case 1 and a locking member 2 that fits therein, and restricts the sliding of the locking member to prevent the above-mentioned pair. Nasu holding claw 3,
It is composed of a cam plate 5 that regulates the opening/closing lock state of 3,
In the illustrated embodiment, all components except the spring 4 are individually molded from thermoplastic synthetic resin such as nylon resin. Now, as shown in the drawing, the case 1 has an opening 6 at one end,
It is formed into a box shape with a deep depth, with flanges 7.7 provided on the left and right outer circumferential surfaces of the opening 6, and a vertical guide length running from a position close to the opening toward the back toward the center on the top wall. A hole 8 is provided, and a substantially V-shaped hole is formed in the center of the upper wall so as not to intersect with this elongated hole.
Make a letter-shaped cut 9 (cut out a part of the wall and insert the spring piece lO
At the same time, a protrusion 11 is provided on the inner surface of the free end side of this spring piece to project inward. Parts are cut out on both the left and right sides of the case and protrude outward from the flange 7.
．． Locking pawls 12, 12 facing the opening 6 are provided, and a mounting portion 13 for mounting a rod-shaped spring 4 protruding toward the opening 6 is provided on the inner wall surface further back. The locking member 2 is shaped like a block and has an abutting end 14 at one end thereof, and faces the holding claw 33 from both sides of the abutting end via thin hinge parts 15.15. It will also be extended. Furthermore, a cavity l6 opening rearward and having a substantially circular cross section is provided in the block-shaped main body, and a locking protrusion 17 for the panel 4 is provided at the bottom of the cavity l6. On the upper surface of the main body, a projection l8 is provided at the center of the portion near the abutting end 14, and a horizontal linear guide groove 19 is provided at the rear portion avoiding this projection. On the other hand, the cam plate 5 is formed into a rectangular plate shape, and is provided with a protrusion 20 having a length in the lateral direction that slides into the guide thread groove 18 provided on the locking member 2 on the lower surface, and on the upper surface. A roughly heart-shaped raised portion 21 is provided in the center, and a passage 22 that follows the shape of a heart is provided on the circumferential surface of this raised portion. As will be described later, the passage 22 slides the protrusion 1l provided at the tip of the spring piece of the case 1 and guides it in one direction, thereby bringing the holding pawl 33 provided on the locking member 2 into the engaged state. This passage is connected to the central raised portion 2 as shown in Figures 12 to 14 in detail.
A receiving part 22a for receiving the protrusion l1 is provided at one end of the protruding part l1 as a center, a slope part 22b is provided along one side of the raised part 21, and then a second slope extends beyond the step part 22c at the rear end of this slope part. part 22d, and an engaging part 23 which is a valley part of an eight-tot-shaped raised part from a step part 22e at the rear end of this slope part.
, and further from the third slope portion 22f to the stepped portion 2.
2g, and from the slope portion 22h provided along the opposite side of the raised portion 21, over the next step portion 22i and again to the receiving portion 22a, which is shaped as a forward circuit that goes just around the raised portion 2l. By alternately combining the above-mentioned slope parts and step parts, the projection part 10 of the spring piece 10 can always move in one direction only, that is, in the direction of the arrow shown in FIG. It is designed so that it can be engaged with and released from the joint 23. The cam plate 5 has a passage 22 that circulates in one direction on one side.
are placed on the upper surface of the locking member 2, and the assembled state is pushed through the opening 6 of the case 1, thereby assembling one device. Figures 1 to 7 above show this fully assembled state. To explain this assembly relationship in more detail, first, as described above, the cam plate 5 is placed on the upper surface of the locking member 2, and the protrusion 20 is slid onto the guide line yt19 provided on the locking member. A coiled spring 4 is fitted into the portion l8, and one end thereof is fitted into the locking protrusion 17. Next, insert the locking member with the cam plate and spring assembled through the opening 6 of the case 1, fit the end of the spring 4 protruding from the tip into the rod-shaped attachment part l3 provided inside the case, and \The entire locking member is pushed into the inside of the case so that the mounting portion l3 is received in the cavity l9. At this time, the protrusion 18 provided on the upper surface of the locking member comes into contact with the upper surface of the opening 6, but if the upper surface is pushed up using the elasticity of the case material and the protrusion 18 is forcibly inserted, the protrusion l
8 slides into a vertical guide hole 8 provided on the top surface of the case, and the pushed-up top surface returns to its original state to prevent the locking member 2 from being pulled out. The locking member housed inside the case in this way is constantly pressed in the direction of the opening 6 by the force of the compressed spring 4.
The projection 1B is held in abutment with one end of the guide slot 8. In this state, the abutting end l4 is aligned with the opening 6, and the holding claws 3, 3 extending from this are kept open outside the opening 6. Thus,
When the device of the present invention, which is assembled by housing the locking member 2 and the cam plate 5 inside the case 1, is used as a door closing means,
The device is installed at an opening of a cabinet or the like to which a door is hinged, and an engaging body provided on the back side of the opening/closing end of the door is caught by a pair of holding claws 3, 3 to prevent the door from opening. Figures 15 to tS
V! J shows the use and operating state of the locking device invented by Wooden. Next, we will explain in detail the actual use and operation according to these drawings. When the device of the present invention is used as a means for closing a folding screen as described above, a through-hole 25 for attachment is provided in the plate portion C that forms the opening of a cabinet or the like to which the door is hinged, and the through-hole 25 is inserted into the through-hole on the front side. Push the case 1 in further and remove the collars 7 provided on the left and right outer surfaces of the opening 6.
7 into the expanded part inside the through-hole, pass through the locking claws 12 and 12 provided on both left and right side surfaces, and pinch the edge of the opening 25 between the collar 7 and the locking claws 12 from the inside and outside. Put it on. On the other hand, an engaging body 27 having a retaining portion with an expanded diameter end is attached to the rear surface of the openable/closable free end of the door 2B, and the engaging body 27 is opposed to the device of the present invention mounted above. Fig. 15 shows this installed state and also shows the appearance immediately before locking, in which the abutting end 14 of the locking member 2 coincides with the opening 6 of the case 1, and the two holding members extending from this The claw 3.3 opens in a figure-eight shape outside the opening and is prepared for the entry of the engaging body 27. In this state, the engaging body 27 is closed by closing the door 2B.
When pushed forward, the tip of the engaging body first contacts the abutting end 14 of the locking member 2, and as a result of the pushing, the locking member is pushed deep into the case l while contracting the spring 4,
Along with this, Ke? The two holding claws 3.3 that were open outside the opening 6 are closed together at the edge of the opening, and the engaging body 27
This will hold the swollen diameter engaging part of the holder. FIG. 18 shows this state. At this time, as the locking member 2 retreats, the cam plate 5 mounted on the top surface enters the depths of the case, and the spring piece provided on the top surface of the case! The protrusion 11 of O reaches the receiving part 22a of the heart-shaped passage 22, and as the cam plate 5 enters as the locking member is pushed in, the protrusion 11 climbs onto the first slope 22b and the protrusion 21 It will bite deeply into the center of the cam plate 5 along one side. When the protrusion 11 rides on this slope portion 22b, the spring piece!
As the protrusion O is bent, the protrusion 11 rises along the slope, but does not move in the left-right direction, so when it collides with one inclined side of the protrusion 21, the cam plate 5 moves into the guide groove 19 of the locking member.
Move to the right using the protrusion 2o that has been slid onto the protrusion 11 as a guide.
This would allow the vehicle to run over the vehicle. Figure 16 correctly shows the situation at this time. Next, FIG. 17 shows a state in which the pushing has further progressed from the above state and the holding claws 3, 3 have completely entered the inside of the opening 6 and are holding the 5 retainer 27. The protrusion 11 that has entered the passage 22 of No. 5 crosses the step portion 22c, further crosses the second slope portion 22d, and falls into the next step portion 22e. It engages with the retaining part 23. When the protrusion 11 falls beyond the stepped portion 22e,
The locking member 2 reaches the deepest part of the case 1 and cannot be pushed in any further. Therefore, when the locking member is stopped being pushed in using this as an opportunity, the protrusion 11 is guided to the slope with the stepped portion 22e and automatically engages with the retaining portion 23 because it is returned by the force of the spring 4. It turns out. With this guidance, the cam plate 5 is again laterally moved to the center of the upper surface of the locking member 2 using the guide groove l8 as a guide. The state shown in FIG. 17 shows the device of the present invention when it is locked, and the door 26 is in a closed state. Next, when opening the door, the surface of the door is pressed again to press the engaging body 27 against the locking member 2, and the engaged state is released and the door is opened. FIG. 18 shows a state in which the engaging body 27 is pressed again for release, and FIG. 19 shows a state in which this pressing is released and the protrusion 11
This figure shows the process of removing the cam plate from the passage 22 of the cam plate. First, when the engaging body 27 is pressed again to release the lock, the locking member 2 moves toward the back of the case, so the protrusion 11 that has engaged with the engaging portion 23 moves the spring piece 10 upward. It rides up the third slope part 22f while bending, and falls into the next step part 22g. At the same time as the protrusion 11 falls, the tip of the locking member 2 comes into contact with the deep inner wall surface of the case, making it impossible to push it in any further. When the pressing of the engaging body 27 is released using this as an opportunity, the locking member 2 is returned to the opening 6 side of the case by the action of the spring 4, and at the same time, the protrusion 20 is slid onto the guide strip file and assembled. Since the cam plate 5 that has been removed is returned to the opening side, the projection 11 moves to the right of the raised portion 2l along the slope of the stepped portion 22g, and when it comes off this raised portion, it reaches the fourth sloped portion 22h. 22i.
, and returns to the receiving section 22a. At this time, after the protrusion 11 falls into the stepped portion 22g (in the state shown in FIG. 18), the cam plate 5 moves to the left using the slope of the stepped portion 22g as a guide as the pressure is released (in the state shown in FIG. Remove the protrusion 11 from the back side (lower side in the drawing) of the section 2l. When this protrusion climbs onto the slope 22h, the cam plate moves to the farthest left to allow the protrusion to pass, and returns the protrusion to the receiving portion 22a (FIG. 19).
When the protrusion l1 is further removed from the cam plate, the cam plate returns to the center of the upper surface of the locking member and is ready for the next locking operation. As explained above, the device of the present invention is configured such that when the engaging body provided on the door is restrained, the protrusion l1 that slides into the passage 22 of the cam plate 5 is inserted into the passage 22.
Regardless of the fact that the locking portion 23 is provided along a substantially heart-shaped shape, the locking portion 23 remains in a fixed position, that is, at the tip of the spring piece 10, and successively climbs over the slope and step portion of this passage. When the locking member 2 and the cam plate 5 are moved to the back of the case by pushing the engaging body again, they come off from the locking portion 23 and lock onto the slope and step portions of the passage. It is designed to cross over, move in one direction, return to its original position in the passage, and release the locked state. At this time, the protrusion 11 is swung only in the vertical direction by the action of the spring piece 10, allowing the two passages 22 to move in a heart-shaped manner, allowing the two passages 22 to move in one direction. For spreading laterally along the guide groove l9, there is a protrusion 2.
The cam plate 5 on which the cam plate 0 is slidably fitted is moved in the left-right direction to absorb it, and the protrusion 11 only needs to be moved in the vertical direction. As described above, according to the present invention, the protrusion l! which slides into the heart-shaped passage 2822! Since it is only necessary to move up and down, the cam plate 5 may be provided directly on the leaf spring-like spring piece 1o provided in the case 1. Therefore, it can be easily formed, and the cam plate 5 that receives this protrusion 1l is structurally free. Although it is somewhat complicated, it can be injection molded with plastic and is suitable for mass production, so it is extremely easy to manufacture and has the advantage that it can be provided at a lower price than the conventional products mentioned above.Of course, the present invention The device includes a case 1, a locking member 2, a cam plate 5,
The four springs 4 are manufactured individually, and assembling them is done by placing the cam plate 5 on the upper surface of the locking member 2 and sandwiching the spring 4 between the locking member and the case l. The operation is extremely simple as the cam plate 5, which forms the passage 22, is approximately plate-shaped and is attached to the upper surface of the locking member 2. They are assembled with their faces facing each other. The protrusion Ll that slides into this passage is provided directly on the spring piece provided by cutting out a section of the wall of the case L, and does not occupy a large space, so the entire device can be downsized, and the furniture It can be used extremely effectively as a locking device for doors, etc. of cabinets of home appliances. Furthermore, in the device of the present invention, when the engaging body is restrained and released, the locking member slides inside the case, the cam plate moves in the lateral direction, and the protrusion that slides along the passage moves up and down. These individual operations are simple and there is little room for malfunction, so accurate operation is always obtained and failures and malfunctions are avoided.
A stable device with low risk of damage can be obtained. Furthermore, in the wooden device, when the protrusion moves along the passage during operation, it moves along the unevenness of the bottom of the passage, engages with the retaining part, and each time it disengages from the retaining part, it clicks under the pressure of the spring piece.
This is advantageous because it generates a click sensation, allowing you to feel the certainty of operation. In addition, the wooden invention device can be installed by simply pushing it in by integrally providing a collar and a locking claw on the case, so it can be used conveniently.

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

図面は本発明の一実施例を示したもので，第１図は本発
明装置の平面図，第２図は底面図、第３図は正面図、第
４図は背面図，第５図は右側面図，第６図は左側面図，
第７図は中央縦断左側面図、第８図はロック状態時にお
ける中央縦断左側面図、第９図はケースの横断底面図，
第ｌＯ図はケースの中央縦断左側面図，第１１図は一部
欠截した係止部材の平面図．第１２図はカム板の拡大斜
面図、第１３図は同じく平面図、第１４図はカム板の中
央縦断左側面図，第１５図乃至第１８図は使用状態を示
すそれぞれ一部断面にして示した説明図で，第１５図は
係合体を係合する直前における解除状態を，第１６図は
係合体を係止部材の衝合端部に衝合させ、これをケース
内部に押入れたところの状態を，第１７図はロック状態
時を，第１８図は係合体を再度押圧して保合部から突起
部を外した直後の状態を、そして第１８図は係合体の押
圧を釈放してロックを解除する途中を示す． Ｆ・・・ケース，２・・・係止部材、３・・・抱持爪，
４・・・バネ，５−・・カム板、６・・・ケースの開口
部、１ｏ・・・バネ片，１１・・・突起部，１５・・・
ヒンジ部，１９・・・案内条溝．２０・・・突条，２１
・・・***部、２２・・・通路，２３・・・保合部． 特　　許　　出　　願　　人　　株式会社　　二　　フ
　　コ第７図 第２図 第３図 第４図 第５図 第６図 第９＠ 第７１図 第７３図 ２２ 第７２図 第７４図 第１５図 第７６図 第７８図 第７９図The drawings show an embodiment of the present invention; FIG. 1 is a plan view of the device of the present invention, FIG. 2 is a bottom view, FIG. 3 is a front view, FIG. 4 is a rear view, and FIG. Right side view, Figure 6 is left side view,
Figure 7 is a left side view of the center longitudinal section, Figure 8 is a left side view of the center longitudinal section in the locked state, and Figure 9 is a cross sectional bottom view of the case.
Figure 10 is a vertical left side view of the case, and Figure 11 is a partially cutaway plan view of the locking member. Fig. 12 is an enlarged slope view of the cam plate, Fig. 13 is a plan view, Fig. 14 is a longitudinal left side view of the cam plate, and Figs. 15 to 18 are partially cross-sectional views showing the usage state. In the explanatory diagrams shown, Fig. 15 shows the released state just before the engaging body is engaged, and Fig. 16 shows the engaging body abutted against the abutting end of the locking member and pushed into the case. Fig. 17 shows the state in the locked state, Fig. 18 shows the state immediately after the engagement body is pressed again to remove the protrusion from the retaining part, and Fig. 18 shows the state immediately after the engagement body is released from the pressure. This shows the process of unlocking. F...Case, 2...Locking member, 3...Holding claw,
4...Spring, 5-...Cam plate, 6...Case opening, 1o...Spring piece, 11...Protrusion, 15...
Hinge portion, 19...Guide groove. 20...projection, 21
... Protuberance, 22... Passage, 23... Retaining part. Patent applicant Nifuco Co., Ltd. Figure 7 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 9 @ Figure 71 Figure 73 Figure 22 Figure 72 Figure 74 Figure 15 Figure 76 Figure 78 Figure 79

Claims (1)

【特許請求の範囲】[Claims] 一壁面を切起して設けるバネ片に突起部を備え一端部に
開口部を設けた筐形のケースと、ケースの内部に上記開
口部に向けて摺動自由に収められる係止部材と、係止部
材とケースの内壁面間に縮設され係止部材を常時開口部
方向に付勢するバネと、係止部材とケースの前記一壁面
の間に介挿され一面に設ける突条を係止部材に横向きに
設ける案内条溝に滑合させ横方向に移動自由にする一方
、他面に設ける一方向循環通路に前記突起部を滑合させ
るカム板とからなり、前記係止部材に対する第１の押込
み操作で前記突起部を前記循環通路中の係合部に係合さ
せることによりロック状態とし、第２の押込みで上記係
合を外しロック状態を解除可能にしてなるロック装置で
あって、前記ケースの一壁面には案内長孔を形成し、他
方前記係止部材には上記一壁面に向って突起を立設し該
係止部材に前記カム板を添わせ、且つケース内壁面との
間に前記バネを介挿して該バネを圧縮しながら該係止部
材をケース開口部から押し入れ前記係止部材の突起を前
記案内長孔に滑合させることによって組立可能にしたロ
ック装置。a housing-shaped case in which a spring piece provided by cutting and raising one wall has a protrusion and an opening at one end; a locking member that is slidably housed inside the case toward the opening; A spring that is contracted between the locking member and the inner wall surface of the case and always urges the locking member toward the opening, and a protrusion that is inserted between the locking member and the one wall surface of the case and provided on one side are locking. a cam plate that slides into a guide groove provided laterally on the locking member to allow free movement in the lateral direction, and slides the protrusion into a one-way circulation passage provided on the other surface; The locking device is configured such that a first pushing operation causes the protrusion to engage with an engaging portion in the circulation passage to bring the protrusion into a locked state, and a second pushing operation disengages the engagement and releases the locked state. , a guide elongated hole is formed in one wall surface of the case, and a protrusion is provided on the locking member to extend toward the one wall surface, and the cam plate is attached to the locking member; The locking device can be assembled by inserting the spring between the holes and compressing the spring while pushing the locking member through the case opening and sliding the protrusion of the locking member into the guide elongated hole.