JP2660840B2 - Table leg support device - Google Patents

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は卓子脚の支持装置に係り、特に卓子脚の倒
伏動作をワンタッチで容易に果さしめ、また卓子脚の倒
伏時に卓子脚を倒伏状態に維持させるとともに卓子脚に
起立時には卓子脚を堅固に起立保持させ、使い勝手を向
上し得て、しかも構成が簡単で、操作性を向上させ得る
卓子脚の支持装置に関する。 〔従来の技術〕 机、テーブル等の卓子は、面板と脚とにより構成され
ている。卓子には、不使用時の便宜のために脚を折畳み
可能に構成したものが種々ある。脚を折畳み可能に構成
した卓子においては、脚と面板とを蝶番あるいはばね付
蝶番によって連結し、さらに脚の起立状態及び脚の倒伏
状態を保持するために脚の起倒機構やロック機構等を備
えたものがある。 〔発明が解決しようとする問題点〕 ところが、従来の卓子においては、脚の起倒機構やロ
ック機構の構成が複雑であり、部品点数が増加し、取扱
いが面倒であるとともに操作性が低下し、また故障が生
じ易く、しかも高価になるという不都合があった。 〔発明の目的〕 そこでこの発明の目的は、上述の不都合を除去すべ
く、付勢機構の付勢力を利用して卓子脚の倒伏時に卓子
脚を倒伏状態に維持させるとともに卓子脚の起立時には
卓子脚をロック機構により起立状態にロックさせること
により、卓子脚の倒伏動作をワンタッチで容易に果さし
め、また卓子脚の倒伏時には卓子脚を倒伏状態に維持さ
せるとともに卓子脚の起立時には卓子脚を堅固に起立保
持させ、更に部品点数を低減して構成の簡単化を図り、
取扱いを簡便に果し得るとともに操作性を向上させ、更
にまた故障の発生を低減し、しかも廉価とし得る卓子脚
の支持装置を実現するにある。 〔問題点を解決するための手段〕 この目的を達成するためにこの発明は、卓子脚を面板
の裏面側に折畳み可能に支持する卓子脚の支持装置にお
いて、離間して配置した一対の卓子脚の夫々基部を連結
する桟を設け、この桟には前記一対の卓子脚を倒伏方向
に付勢する付勢機構としてのばね付蝶番を設け、このば
ね付蝶番は前記桟に固着される支持部材とこの支持部材
に連設されて対峙する一対のばね保持部とこの一対のば
ね保持部間に横架される支持ピンとこの支持ピンに装着
されるコイルばねと前記支持ピンに回動可能に装着され
る連絡部とからなり、前記コイルばねは前記連絡部を前
記面板の裏面から離間する方向に付勢するように一端側
が前記支持部材に当接するとともに他端側が前記連絡部
に当接して設けられ、前記連絡体には操作体の一端側を
取着して設け、この操作体の他端側には前記付勢機構の
付勢力を利用して前記一対の卓子脚の倒伏時に前記一対
の卓子脚を起立状態に維持するとともに前記一対の卓子
脚の起立時には前記一対の卓子脚を起立状態にロックす
るロック機構を設け、このロック機構は、前記操作体の
他端側に倒脚側係止斜面部とこの倒脚側係止斜面部に連
設された突出平坦部とこの突出平坦部に連設された起脚
側係止斜面部とこの起脚側係止斜面部に連設された係止
先端部とを形成するとともに、前記操作体の他端側を挿
通させる挿通空間を形成して前記面板の裏面に固定され
る係止固定体を設け、且つ、この係止固定体には前記操
作体の前記突出平坦部を滑動させるとともに前記操作体
の前記係止先端部を係止させる中央腹部とこの中央腹部
の一端側で前記操作体の前記倒脚側係止斜面部が係止さ
れる倒脚側係止縁部と前記中央腹部の他端側で前記操作
体の前記起脚側係止縁部が係止される起脚側係止縁部と
を形成して構成されたことを特徴とする。 〔作用〕 この発明の構成によれば、起立状態の一対の卓子脚を
倒伏させる際には、操作体を面板の裏面側に押し動作す
ると、操作体の起脚側係止斜面部と係止固定体の起脚側
係止縁部との係止状態及び操作体の係止先端部と係止固
定体の中央腹部と係止状態が夫々解除され、これによ
り、操作体の突出平坦部が係止固定体の中央腹部を滑動
し、一対の卓子脚は、付勢機構のコイルばねの付勢力に
よって自動的に倒伏動作し、そして、操作体の倒脚側係
止斜面部と係止固定体の倒脚側係止縁部とが係止し、よ
って、面板の裏面側に倒伏状態に維持される。また、倒
伏状態の一対の卓子脚を起立させる際には、卓子脚を把
持し、梃子の原理を利用して一対の卓子脚を起立動作す
ると、操作体の倒脚側係止斜面部と係止固定体の倒脚側
係止縁部との係止状態が解除され、そして、終には、操
作体の起脚側係止斜面部と係止固定体の起脚側係止縁部
とが係止するとともに操作体の係止先端部と係止固定体
の中央腹部とが係止し、これにより、一対の卓子脚は、
ロック機構によって堅固にロックされ起立保持される。
この結果、卓子脚の倒伏動作を簡便に果すとともに卓子
脚の倒伏状態を維持させ、また、卓子脚の起立状態を堅
固に保持させ、使い勝手を向上させることができる。ま
た、付勢機構としてばね付蝶番を設け、また、このばね
付蝶番に操作体の一端側を取着し、更に、この操作体の
他端側と係止固定体とによってロック機構を構成するだ
けなので、部品点数を低減し、構成を簡単にし、また、
取扱いを簡便にするとともに操作性の向上を図り、更
に、故障の発生を低減し、しかも、廉価とすることがで
きる。 〔実施例〕 以下図面に基づいてこの発明の実施例を詳細且つ具体
的に説明する。 第１〜10図は、この発明の第１実施例を示すものであ
る。図において、２は卓子である。この卓子２は、面板
４と卓子脚（以下単に「脚」という）６とにより構成さ
れている。 即ち、前記面板４の裏面4aには、脚６−１、６−２、
６−３、６−４が蝶番８−１、８−２、８−３、８−４
によって面板４の中心側である内側方向に折畳み可能に
付設されている。 離間して配置された一対の脚６−１と脚６−２との夫
々基部は桟10−１によって連結され、また、離間して配
置された一対の脚６−３と脚６−４との夫々基部は桟10
−２によって連結されている。 前記桟10−１には、前記脚６−１、６−２を一体的に
倒伏させる方向への付勢力を有し付勢機構12としてばね
付蝶番14を設ける。このばね付蝶番14は、第３、４図に
示す如く、桟10−１に固着手段15、15によって固着され
る支持部材16と、この支持部材16に連設されて対峙する
一対のばね保持部18−１、18−２と、この一対のばね保
持部18−１、18−２間に横架される支持ピン20と、この
支持ピン20に装着されるコイルばね22と、前記支持ピン
20に回動可能に装着された連絡部24とからなる。前記コ
イルばね22は、一端部22aが桟10−１側の支持部材16に
当接するとともに他端部22bが連絡部24の端部に当接し
て配設され、連絡部24を面板４の裏面4aから離間する方
向に付勢する付勢力Ｐを有している（第３図参照）。 前記連絡部24には、所定長さを有する操作体26の一端
側が第１取着手段27によって取着されている。また、こ
の操作体26の他端側である自由端側には、第５、第７に
示す如くロック機構28を構成する倒脚側係止斜面部30
と、起脚側係止斜面部32とが形成されている。この倒脚
側係止斜面部30と起脚側係止斜面部32とは、第６図に示
す如く、突出平坦部34によって連設され、面板４の裏面
4aに固定された係止固定体36の倒脚側係止縁部38と起脚
側係止縁部40とに夫々係止されるものである。この倒脚
側係止縁部38と起脚側係止縁部40とは、断面Ｕ字形状の
係止固定体36の中央腹部36aを一端側と他端側とに形成
される。 この係止固定体36は、所定幅を有する例えば断面Ｕ字
形の部材からなり、両側の固着部42−１、42−２が面板
４の裏面4aに第２取着手段43によって固定されている。
詳述すれば、第７図に示す如く、係止固定体36の固着部
42−１には前記操作体26の移動方向と平行に、つまり第
１図において左右方向に指向する取着用長穴42−1a、42
−1bが直列に形成されているとともに、係止固定体36の
固着部42−２には上述の取着用長穴42−1a、42−1bと同
様に、取着用長穴42−2a、42−2bが形成されている。前
記係止固定体36は、第３取着手段である取着用ねじ43−
1a、43−1bを取着用長穴42−1a、42−1bに挿通し且つ面
板４の裏面4aに螺着するとともに取着用ねじ43−2a、43
−2bを取着用長穴42−2a、42−2bに挿通して面板４の裏
面4aに螺着することにより、面板４の裏面に固定される
ものである。前記係止固定体36と面板４の裏面4aとによ
って形成される挿通空間部44には、操作体26の突出平坦
部34が挿通される。また、脚６−１、６−２の起立時に
は、係止固定体36の中央腹部36aに操作体26の係止先端
部26aが係止するものである。 前記係止固定体36の起脚側係止縁部40に接する操作体
26の起脚側係止斜面部32の傾斜角度は、第５、６図に示
す如く、この斜面部32が突出平坦部34と交差する部位を
第１交差部32aとし、係止先端部26aと交差する部位を第
２交差部32bとした場合、支持ピン20の中心から第１交
差部32aまでの距離よりも第２交差部32bまでの距離の方
を僅かに大きく設定し、たとえ脚６−１、６−２に外力
が作用したとしても外れない角度であるとともに、脚６
−１、６−２が揺動した場合でも、この揺動によって起
脚側係止斜面部32と起脚側係止縁部40との間に隙間が生
じた場合は、操作体26を面板４の裏面4aから離間させよ
うとする付勢力Ｐが作用して、操作体26がこの隙間を小
とする方向に直ちに摺動して、脚６−１、６−２をより
堅固に斜面緊締し固定する角度である。 また、操作体26の倒脚側係止斜面部30は、前述起脚側
係止斜面部32と逆の斜面で突出平坦部34と交差する部位
を第３交差部30aとし、操作体26の突出平坦部34と交差
する部位を第４交差部30bとすると、支持ピン20の中心
から第３交差部30aまでの距離よりも支持ピン20の中心
から第４交差部30bまでの距離が僅かに小さく設定され
ると共に、倒脚時、係止固定体36の倒脚側係止縁部38に
係止した場合、面板４の裏面4aから操作体26を離間させ
ようとする付勢力Ｐと相俟って面板４の下面に倒脚した
ままの卓子２を持ち上げても、脚６が自重で起脚しない
角度に設定されている。 また、ばね付蝶番14のコイルばね22による面板２の裏
面4aより操作体26を離間させようとする前記付勢力Ｐは
操作体26を押し動作し、起脚側係止斜面部32と起脚側係
止縁部40との当接を解除した場合、前記付勢力Ｐによっ
て、直ちに操作体26の突出平坦部34は、係止固定体36の
挿通空間部44を挿通し、スムーズに脚６−１、６−２を
倒伏させ、倒脚完了後は脚６−１、６−２を下面にした
まま持ち上げても、脚６−１、６−２の自重で開動作す
るような事のない付勢力を有している。 また、同様に、前記脚６−３、６−４を折畳み可能に
すべく桟10−２には付勢機構12を設けるとともに、この
付勢機構12に連結してロック機構28を設ける。この付勢
機構12及びロック機構28は上述の桟10−１に装着する場
合と同様に取付けられるので、ここでは詳細な説明を省
略する。 次に、この第１実施例の作用を説明する。 脚６の起立時には、第８図に示す如く、ばね付蝶番14
のコイルばね22の弾発力によって操作体26の自由端側は
ロック機構28によってロックされている。即ち、操作体
26の起脚側係止斜面部32が固定係止体36の起脚側係止縁
部40に係止するとともに、操作体26の係止先端部26aが
固定係止体36の中央腹部36aに所定の隙間を有して押付
けられている。これにより、脚６の起立状態は、堅固に
維持されているので、使用時に卓子２に外力が生じた場
合でも、卓子２が揺動せず、安定性を向上させることが
できる。 そして、起立状態の脚６を倒伏させる際には、第９図
に示す如く、操作体26を面板４の裏面4a側に押し動作す
るだけでよく（白抜きの矢印で示す）、その結果起脚側
係止斜面部32と起脚側係止縁部40との係止状態が解除さ
れる。すると、操作体26がコイルばね22の弾発力によっ
て面板４の裏面4aから離間する方向に強く付勢されてい
るので、脚６が倒伏方向に強く付勢されるとともに突出
平坦部34が係止固定体36の内面を滑動し、脚６の倒伏動
作が果される（第９図の矢印で示す）。次いで、脚６の
自由端側が面板４の裏面4aに略当接する状態になると、
倒脚側係止斜面部30と係止固定体36の倒脚側係止縁部38
とが係止する。このとき、同様に操作体26がコイルばね
22によって面板４の裏面4aから離間する方向に付勢され
ているので、倒脚側係止斜面部30と倒脚側係止縁部38と
の係止状態が堅固になり、倒伏状態が効果的に維持され
る（第10図の矢印で示す）。この結果、脚６の倒伏動作
を、操作体26を押し動作することにより、ワンタッチで
容易に行うことができ、操作性を向上させることができ
る。また、卓子２の搬送時や収納時に、脚６を倒伏状態
で面板４の下方に位置したまま卓子２を持上げても脚６
が徒に起立動作することがないので、取扱いを簡便に果
し得る。 更に、倒伏状態の脚６を起立させる際には、脚６を把
持して起立方向（第10図の１点鎖線で示す）に回動する
と、倒脚側係止斜面部30と倒脚側係止縁部38との係止状
態が解除され、さらに脚６を起立させ略起立状態にする
と（第９図の１点鎖線で示す）、起脚側係止斜面部32と
起脚側係止縁部40とが係止し、つまりロックされて起立
状態が維持される。これにより、脚６の起立状態を堅固
に保持させることができ、使用時における卓子２全体を
堅固なものとし得る（第８図参照）。 また、倒脚側係止斜面部30及び起脚側係止斜面部32の
係止固定体36への係止は、たとえ斜面緊締の効果が低減
した場合においても、係止固定体36を面板４の裏面4aに
固着部42−１及び42−２に操作体26の移動方向と平行に
取着用長穴42−1a、42−1b及び42−2a、42−2bを形成し
て取着ねじ43−1a、43−1b及び43−2a、43−2bによって
ねじ止めしているので、係止固定体36を取外して桟10側
に移動して再度面板４の裏面4aに取付けることにより
（第７図の矢印で示す）、略永久的に脚６の緊締を担保
させることができ、実用上有利である。 更に、断面Ｕ字状の係止固定体36を利用することによ
り、組立て作業性を大幅に向上させることができ、また
取扱いを容易とし、しかも廉価に製作することができ
る。 第11〜13図は、この発明の第２実施例を示すものであ
る。以下の実施例においては、上述の第１実施例と同一
機能を果す箇所には同一符号を付して説明する。 この第２実施例の特徴とするところは、以下の点にあ
る。即ち、操作体26の面板４側の面には、操作体26を面
板４の裏面4aから離間する方向に付勢すべく面板４の裏
面4aに摺動部52aを有する板ばね等の押圧体52が取着具5
4によって付設し、脚６に外力が作用した場合にでも、
ロック機構28が徒に解除されない構成とした。また、押
圧体52とコイルばね22との押圧力は、少なくとも脚６の
倒伏時に、脚６を下方にして面板４を持ち上げた場合で
も脚６の起立動作が阻止される押圧力である。 この第２実施例の構成によれば、押圧体52の押圧力に
より、脚６の起立時には、第11図に示す如く、起立側係
止斜面部32と起脚側係止縁部40とを堅固に係止させ、ま
た、脚６の倒伏動作時には、第12図に示す如く、操作体
26の弾発力を大きくして脚６の倒伏動作を速やかに行わ
せ、更に脚６の倒伏時には、第13図に示す如く、倒伏側
係止斜面部30と倒伏側係止縁部38とを堅固に係止させ
る。これにより、脚６の起立・倒伏状態をさらに確実な
ものとし、信頼性を向上させることができる。また、脚
６の倒伏動作を迅速に果し得て、使用し易くなる。 また、押圧体52はばね付蝶番14の付勢力を大きくする
ので、操作体26の長さが大なる場合でも、起立・倒伏状
態を確実に維持する付勢力を担保し得る。 なお、押圧体52を面板４の裏面4aに取付具54で取付
け、摺動部52aを操作体26に当接し摺動自在に設定して
も同様の効果を得ることは勿論である。 第14、15図は、この発明の第３実施例を示すものであ
る。 この第３実施例の特徴とするところは、以下の点にあ
る。即ち、桟10に固着するばね付蝶番14を面板４の縁部
4b側に配設するとともに、ロック機構28を面板４の裏面
4aの縁部4bに設ける。また、前記ばね付蝶番14は、脚６
を倒伏させる方向への付勢力を有している。 この第３実施例の構成によれば、脚６の倒伏操作を面
板４の縁部4bで行うことができるので、操作性の向上を
図り、使い勝手を向上させ得る。 第16、17図は、この発明の第４実施例を示すものであ
る。 この第４実施例の特徴とするところは、以下の点にあ
る。即ち、桟10に固着するばね付蝶番14を面板４の縁部
4b側に配設するとともに、ロック機構28を面板４の裏面
4aに穿設した係止穴62とこの係止穴62に係合・離脱する
係止突部64とにより構成する。また、ばね付蝶番14は、
脚６を倒伏させる方向に付勢するとともに、操作体26の
自由端側を面板４の裏面4a側に付勢している。なお、符
号66は、操作体26の把持部である。 この第４実施例の構成によれば、ロック機構28の構成
が簡単となり、製作、組付けを容易に果し得て、しかも
廉価とし得る。 なお、この発明は上述の実施例に限定されず、種々応
用改変が可能であることは勿論である。 例えば、第18図に示す如く、操作体26の突出先端部26
aの裏面4a側にスプリング72の一端側を固着し、またこ
のスプリング72の他端側を面板４の裏面4a上で摺動可能
に取付けることも可能である。この構成によれば、スプ
リング72の付勢力によって脚６の起立・倒伏状態を確実
に果すとともに、構成が簡単となり、廉価に構成し得
る。 なお、ばね付蝶番14のコイルばね22による付勢力Ｐ
は、ばね付蝶番に限定されるものではなく、板ばね等の
弾発体を付勢機構として使用することも可能である。 〔発明の効果〕 以上詳細な説明から明らかなようにこの発明によれ
ば、離間して配置した一対の卓子脚の夫々基部を連結す
る桟を設け、桟には一対の卓子脚を倒伏方向に付勢する
付勢機構としてのばね付蝶番を設け、ばね付蝶番は桟に
固着される支持部材と支持部材に連設されて対峙する一
対のばね保持部と一対のばね保持部間に横架される支持
ピンと支持ピンに装着されるコイルばねと支持ピンに回
動可能に装着される連絡部とからなり、コイルばねは連
絡部を面板の裏面から離間する方向に付勢するように一
端側が支持部材に当接するとともに他端側が連絡部に当
接して設けられ、連絡体には操作体の一端側を取着して
設け、操作体の他端側には付勢機構の付勢力を利用して
一対の卓子脚の倒伏時に一対の卓子脚を倒伏状態に維持
するとともに一対の卓子脚の起立時には一対の卓子脚を
起立状態にロックするロック機構を設け、ロック機構
は、操作体の他端側に倒脚側係止斜面部と倒脚側係止斜
面部に連設された突出平坦部と突出平坦部に連設された
起脚側係止斜面部と起脚側係止斜面部に連設された係止
先端部とを形成するとともに、操作体の他端側に挿通さ
せる挿通空間を形成して面板の裏面に固定される係止固
定体を設け、且つ、係止固定体には操作体の突出平坦部
を滑動させるとともに操作体の係止先端部を係止させる
中央腹部と中央腹部の一端側で操作体の倒脚側係止斜面
部が係止される倒脚側係止縁部と中央腹部の他端側で操
作体の起脚側係止縁部が係止される起脚側係止縁部とを
形成して構成されたことにより、卓子脚の倒伏時にはワ
ンタッチ操作によって卓子脚を容易に倒伏させるととも
に卓子脚の倒伏状態をロック機構によって維持させ、ま
た卓子脚の起立時には卓子脚を把持し、梃子の原理を利
用して卓子脚を起立動作するとともに卓子脚の起立状態
をロック機構によってロックさせ、卓子脚を堅固に保持
させ、使い勝手を向上させ得る。 また、この発明の構成によれば、付勢機構としてばね
付蝶番を設け、また、このばね付蝶番に操作体の一端側
を取着し、更に、この操作体の他端側と係止固定体とに
よってロック機構を構成するだけなので、部品点数が少
なく、構成が簡単であり、取扱いが簡便であるとともに
操作性の向上を図り、且つ故障の発生を減少し、しかも
廉価とし得る。Description: BACKGROUND OF THE INVENTION [Field of the Invention] The present invention relates to a table leg supporting device, and more particularly to a table leg which can easily perform a falling operation with one touch, and when the table leg falls, the table leg falls. The present invention relates to a supporting device for a table leg which can be maintained in a state and firmly held when standing on the table leg, can be improved in usability, has a simple structure, and can improve operability. [Related Art] A tabletop such as a desk or a table is composed of a face plate and legs. There are various types of tabletops in which legs can be folded for convenience when not in use. In tabletops with legs that can be folded, the legs and the face plate are connected by hinges or hinges with springs, and further, a leg elevating mechanism, a locking mechanism, and the like are provided to maintain the leg standing state and the leg falling state. Some have been provided. [Problems to be Solved by the Invention] However, in the conventional tabletop, the structure of the leg raising and lowering mechanism and the lock mechanism is complicated, the number of parts increases, handling is troublesome, and operability is reduced. In addition, there is a disadvantage that a failure easily occurs and the cost increases. [Object of the Invention] Accordingly, an object of the present invention is to eliminate the inconvenience described above, to maintain the table leg in the lying state when the table leg is lying down by using the urging force of the urging mechanism, and to set the table leg up when the table leg is standing up. By locking the legs in the upright position by the lock mechanism, the tabletop legs can easily fall down with one touch, and when the tabletop legs fall down, the tabletop legs are maintained in the lying down state, and when the tabletop legs stand up, the tabletop legs are raised. Standing firmly and holding it down, further reducing the number of parts and simplifying the configuration,
An object of the present invention is to realize a table leg support device that can be easily handled, improves operability, further reduces the occurrence of failures, and can be inexpensive. Means for Solving the Problems In order to achieve this object, the present invention relates to a table leg supporting device for supporting a table leg on a back side of a face plate so as to be foldable. Each of the bars is provided with a hinge for connecting the base portions, and the bar is provided with a hinge with a spring as an urging mechanism for urging the pair of table legs in the falling direction, and the hinge with the spring is a support member fixed to the bar. And a pair of spring holding portions which are connected to the support member and face each other, a support pin which is laid between the pair of spring holding portions, a coil spring which is mounted on the support pin, and which is rotatably mounted on the support pin. The coil spring is provided such that one end thereof is in contact with the support member and the other end is in contact with the communication portion so as to urge the communication portion in a direction away from the back surface of the face plate. The contact body is operated One end of the body is attached and provided, and the other end of the operating body is maintained by using the urging force of the urging mechanism when the pair of table legs fall down. A locking mechanism is provided for locking the pair of table legs in the standing state when the pair of table legs are standing. The locking mechanism includes a falling-side locking slope on the other end of the operating body and A protruding flat portion connected to the locking slope portion, a rising-side locking slope portion connected to the protruding flat portion, and a locking tip portion connected to the raising-side locking slope portion are formed. And an insertion space through which the other end of the operating body is inserted is provided with a locking fixed body fixed to the back surface of the face plate, and the locking fixed body has the protruding flat of the operating body. A central abdomen for sliding the locking part and locking the locking tip of the operating body, The falling leg-side locking edge portion of the operating body is locked at the other side of the falling leg-side locking slope portion of the operating body, and the rising leg-side locking edge portion of the operating body is locked at the other end of the central abdomen. And a leading edge side locking edge portion to be formed. [Operation] According to the configuration of the present invention, when the pair of upright table legs is lowered, when the operating body is pushed toward the back side of the face plate, the operating body is locked with the raising-side locking slope portion. The locked state of the fixed body with the locking edge on the raising side, the locking tip of the operating body, and the central abdomen of the locking fixed body and the locked state are released, respectively, whereby the protruding flat portion of the operating body is released. Sliding on the central abdomen of the locking fixed body, the pair of table legs automatically fall down by the urging force of the coil spring of the urging mechanism, and then lock with the falling slope side slope of the operating body. The falling edge of the body is locked with the locking edge, so that the body is maintained on the back side of the face plate in a lying state. In addition, when raising the pair of table legs in the lying state, the table legs are gripped, and the pair of table legs are raised using the principle of leverage. The locking state of the stop fixing body with the falling-side locking edge is released, and finally, the raising-side locking slope of the operating body and the raising-side locking edge of the locking fixed body. Is locked and the locking tip of the operating body and the central abdomen of the locking fixed body are locked, whereby the pair of table legs
The lock mechanism firmly locks and stands upright.
As a result, it is possible to easily perform the falling motion of the table legs, maintain the falling state of the table legs, firmly maintain the standing state of the table legs, and improve the usability. Further, a hinge with a spring is provided as an urging mechanism, one end of the operating body is attached to the hinge with the spring, and a locking mechanism is constituted by the other end of the operating body and the locking fixed body. Only, so the number of parts is reduced, the configuration is simplified,
The handling can be simplified, the operability can be improved, the occurrence of failure can be reduced, and the cost can be reduced. Embodiment An embodiment of the present invention will be described below in detail and specifically with reference to the drawings. 1 to 10 show a first embodiment of the present invention. In the figure, reference numeral 2 denotes a table. The tabletop 2 includes a face plate 4 and tabletop legs (hereinafter simply referred to as “legs”) 6. That is, on the back surface 4a of the face plate 4, the legs 6-1 and 6-2,
6-3, 6-4 are hinges 8-1, 8-2, 8-3, 8-4
Thereby, it is provided so as to be foldable in an inward direction which is the center side of the face plate 4. The bases of the pair of legs 6-1 and 6-2 arranged at a distance are connected by a bar 10-1, and the pair of legs 6-3 and 6-4 arranged at a distance from each other. The base of each is a pier 10
-2 linked. The bar 10-1 is provided with a spring-loaded hinge 14 as a biasing mechanism 12 having a biasing force in a direction for integrally lowering the legs 6-1 and 6-2. As shown in FIGS. 3 and 4, the hinge 14 with a spring is provided with a support member 16 fixed to the bar 10-1 by fixing means 15, 15, and a pair of spring holding members connected to the support member 16 and facing each other. Parts 18-1 and 18-2, a support pin 20 laid between the pair of spring holding parts 18-1 and 18-2, a coil spring 22 mounted on the support pin 20, and the support pin
The communication unit 24 is rotatably mounted on the communication unit 20. The coil spring 22 is disposed such that one end portion 22a is in contact with the support member 16 on the side of the crosspiece 10-1 and the other end portion 22b is in contact with the end of the communication portion 24. It has an urging force P for urging in a direction away from 4a (see FIG. 3). One end of an operating body 26 having a predetermined length is attached to the connecting portion 24 by first attaching means 27. Further, on the free end side, which is the other end side of the operation body 26, the falling-side locking slope portion 30 constituting the lock mechanism 28 as shown in the fifth and seventh parts.
And a starting-side locking slope 32. As shown in FIG. 6, the falling slope 30 and the rising slope 32 are connected to each other by a protruding flat portion 34, as shown in FIG.
The locking fixed body 36 fixed to 4a is locked to the falling-side locking edge 38 and the rising-side locking edge 40, respectively. The falling leg side locking edge portion 38 and the raising leg side locking edge portion 40 are formed at one end and the other end with the central abdomen 36a of the locking fixed body 36 having a U-shaped cross section. The locking fixed body 36 is made of a member having a predetermined width, for example, a U-shaped cross section, and the fixing portions 42-1 and 42-2 on both sides are fixed to the back surface 4a of the face plate 4 by the second attaching means 43. .
More specifically, as shown in FIG.
The mounting slots 42-1a and 42-2 are oriented in the direction parallel to the moving direction of the operating body 26, that is, in the horizontal direction in FIG.
-1b are formed in series, and the fixing portions 42-2 of the locking fixed body 36 are attached to the fixing long holes 42-1a and 42-1b in the same manner as the above-described long fixing holes 42-1a and 42-1b. −2b is formed. The locking fixed body 36 is provided with a mounting screw 43-which is a third mounting means.
1a and 43-1b are inserted through the long holes 42-1a and 42-1b and screwed to the back surface 4a of the face plate 4, and the mounting screws 42-2a and 43-2
-2b is fixed to the back surface of the face plate 4 by being inserted into the long holes 42-2a and 42-2b and screwed to the back surface 4a of the face plate 4. The projecting flat portion 34 of the operating body 26 is inserted into an insertion space 44 formed by the locking fixed body 36 and the back surface 4a of the face plate 4. When the legs 6-1 and 6-2 stand up, the locking tip 26 a of the operating body 26 is locked to the central abdomen 36 a of the locking fixed body 36. An operating body that is in contact with the starting edge side locking edge 40 of the locking fixed body 36
As shown in FIGS. 5 and 6, the inclination angle of the rising-side locking slope 32 is such that a portion where the slope 32 intersects with the protruding flat portion 34 is defined as a first intersection 32a, and a locking tip 26a. When the portion that intersects with the second intersection portion 32b, the distance from the center of the support pin 20 to the first intersection portion 32a is set to be slightly larger than the distance from the center of the support pin 20 to the first intersection portion 32a. -1, 6-2, the angle is not deviated even if an external force is applied, and the leg 6
Even when -1, 6-2 swings, if the swing causes a gap between the landing-side locking slope 32 and the landing-side locking edge 40, the operation body 26 is moved to the face plate. The urging force P for separating the back surface 4a from the back surface 4a acts, and the operating body 26 immediately slides in a direction to reduce the gap, thereby tightening the legs 6-1 and 6-2 more firmly. The angle to fix. Also, the falling leg side locking slope portion 30 of the operating body 26 has a third crossing portion 30a where the slope intersecting with the protruding flat portion 34 on the slope opposite to the above-described rising leg side locking slope portion 32, Assuming that a portion that intersects with the protruding flat portion 34 is a fourth intersection portion 30b, the distance from the center of the support pin 20 to the fourth intersection portion 30b is slightly smaller than the distance from the center of the support pin 20 to the third intersection portion 30a. It is set to be small, and when it is locked to the falling edge side locking edge 38 of the locking fixed body 36 at the time of the fall, the biasing force P for separating the operating body 26 from the back surface 4a of the face plate 4 is incompatible with the biasing force P. In addition, the angle is set so that the leg 6 does not rise due to its own weight even when the tabletop 2 is lifted down on the lower surface of the face plate 4. Further, the urging force P for separating the operating body 26 from the back surface 4a of the face plate 2 by the coil spring 22 of the hinge 14 with spring presses the operating body 26 to move the operating side 26 to the starting side locking slope 32 and the starting side. When the contact with the side locking edge portion 40 is released, the projecting flat portion 34 of the operating body 26 is immediately inserted into the insertion space portion 44 of the locking fixed body 36 by the urging force P, and the leg 6 is smoothly moved. -1 and 6-2 fall down, and after the fall is completed, even if the legs 6-1 and 6-2 are lifted with the lower surface, the legs 6-1 and 6-2 may open with their own weight. Have no biasing force. Similarly, a biasing mechanism 12 is provided on the bar 10-2 so that the legs 6-3 and 6-4 can be folded, and a lock mechanism 28 is provided in connection with the biasing mechanism 12. Since the urging mechanism 12 and the lock mechanism 28 are mounted in the same manner as when mounted on the bar 10-1, the detailed description is omitted here. Next, the operation of the first embodiment will be described. When the leg 6 is standing, as shown in FIG.
The free end side of the operating body 26 is locked by a lock mechanism 28 by the resilient force of the coil spring 22. That is, the operation body
The rising-side locking slope portion 32 of the locking member 26 is locked to the rising-side locking edge 40 of the fixed locking body 36, and the locking tip 26a of the operating body 26 is fixed to the central abdomen 36a of the fixed locking body 36. Are pressed with a predetermined gap. As a result, the standing state of the leg 6 is firmly maintained, so that even when an external force is applied to the table 2 during use, the table 2 does not swing and the stability can be improved. When the leg 6 in the upright state is turned down, it is only necessary to push the operating body 26 toward the back surface 4a of the face plate 4 (indicated by a white arrow) as shown in FIG. The locked state between the leg-side locking slope 32 and the rising-side locking edge 40 is released. Then, since the operating body 26 is strongly urged in the direction away from the back surface 4a of the face plate 4 by the elastic force of the coil spring 22, the leg 6 is strongly urged in the falling direction and the protruding flat portion 34 is engaged. The inner surface of the stop fixing body 36 is slid, and the leg 6 is moved down (indicated by the arrow in FIG. 9). Next, when the free end side of the leg 6 is substantially in contact with the back surface 4a of the face plate 4,
Falling-side locking slope 30 and falling-side locking edge 38 of locking fixed body 36
Locks. At this time, similarly, the operating body 26 is
22 is biased in a direction away from the back surface 4a of the face plate 4, so that the locking state between the falling-side locking slope 30 and the falling-side locking edge 38 is firm, and the falling state is effective. (Indicated by the arrow in FIG. 10). As a result, the falling motion of the leg 6 can be easily performed with one touch by pushing the operating body 26, and the operability can be improved. Also, when the tabletop 2 is transported or stored, the leg 6 may be lifted while the tabletop 2 is lifted while the leg 6 is lying below the face plate 4 in a lying state.
Since the device does not stand up, it can be handled easily. Further, when the standing leg 6 is to be erected, when the leg 6 is gripped and turned in the erecting direction (indicated by the dashed line in FIG. 10), the falling slope 30 and the falling slope 30 are rotated. When the locked state with the locking edge portion 38 is released, and the leg 6 is further erected to be in a substantially upright state (indicated by a one-dot chain line in FIG. 9), the erected side locking slope portion 32 and the erected side engaging member are engaged. The retaining edge 40 is locked, that is, locked, and the upright state is maintained. As a result, the standing state of the leg 6 can be firmly held, and the entire tabletop 2 can be made firm during use (see FIG. 8). In addition, the locking of the falling-side locking slope 30 and the rising-side locking slope 32 to the locking fixed body 36 can be performed even if the effect of slope tightening is reduced. The fixing holes 42-1a, 42-1b and 42-2a, 42-2b are formed in the fixing portions 42-1 and 42-2 on the back surface 4a of the 4 in parallel to the moving direction of the operating body 26, and the mounting screws are formed. 43-1a and 43-1b and 43-2a and 42-2b, the fixing fixture 36 is removed, moved to the crosspiece 10 side, and attached to the back surface 4a of the face plate 4 again (the 7 (indicated by an arrow in FIG. 7), the tightening of the leg 6 can be secured almost permanently, which is practically advantageous. Further, by using the locking fixing body 36 having a U-shaped cross section, the assembling workability can be greatly improved, and the handling can be facilitated and the manufacturing can be performed at low cost. FIGS. 11 to 13 show a second embodiment of the present invention. In the following embodiments, portions having the same functions as those in the above-described first embodiment will be described with the same reference numerals. The features of the second embodiment are as follows. That is, on the surface of the operating body 26 on the face plate 4 side, a pressing body such as a leaf spring having a sliding portion 52a on the back surface 4a of the face plate 4 in order to bias the operating body 26 in a direction away from the back surface 4a of the face plate 4. 52 is attachment 5
Even if external force acts on leg 6,
The configuration is such that the lock mechanism 28 is not released without warning. The pressing force between the pressing body 52 and the coil spring 22 is a pressing force that prevents the leg 6 from standing up even when the face plate 4 is lifted with the leg 6 down at least when the leg 6 falls down. According to the configuration of the second embodiment, when the leg 6 is erected by the pressing force of the pressing body 52, as shown in FIG. When the leg 6 is lying down, the operating body is firmly locked as shown in FIG.
The resilient force of the leg 26 is increased to cause the leg 6 to fall down quickly. Further, when the leg 6 falls down, as shown in FIG. Is firmly locked. Thereby, the standing and falling state of the leg 6 can be further ensured, and the reliability can be improved. In addition, the falling motion of the leg 6 can be performed quickly, and the leg 6 can be easily used. Further, since the pressing body 52 increases the urging force of the hinge 14 with spring, even when the length of the operating body 26 is long, the urging force for surely maintaining the upright / falling state can be secured. It is needless to say that the same effect can be obtained even if the pressing body 52 is attached to the back surface 4a of the face plate 4 with the mounting tool 54, and the sliding portion 52a is abutted against the operating body 26 so as to be slidable. FIGS. 14 and 15 show a third embodiment of the present invention. The features of the third embodiment are as follows. That is, the hinge 14 with a spring fixed to the bar 10 is attached to the edge of the face plate 4.
4b, and the lock mechanism 28 is attached to the back of the face plate 4.
It is provided on the edge 4b of 4a. Further, the hinge 14 with the spring is
Has a biasing force in the direction of falling down. According to the configuration of the third embodiment, the leg 6 can be laid down on the edge 4b of the face plate 4, so that operability can be improved and usability can be improved. FIGS. 16 and 17 show a fourth embodiment of the present invention. The features of the fourth embodiment are as follows. That is, the hinge 14 with a spring fixed to the bar 10 is attached to the edge of the face plate 4.
4b, and the lock mechanism 28 is attached to the back of the face plate 4.
It is constituted by a locking hole 62 formed in 4a and a locking projection 64 which engages with and disengages from the locking hole 62. The hinge 14 with spring is
The leg 6 is urged in a direction to fall down, and the free end side of the operating body 26 is urged toward the back surface 4a of the face plate 4. Reference numeral 66 denotes a grip of the operation body 26. According to the structure of the fourth embodiment, the structure of the lock mechanism 28 is simplified, the manufacture and assembly can be easily performed, and the cost can be reduced. Note that the present invention is not limited to the above-described embodiment, and it is needless to say that various applications and modifications are possible. For example, as shown in FIG.
It is also possible to fix one end of the spring 72 to the back surface 4a side of a, and to mount the other end of the spring 72 slidably on the back surface 4a of the face plate 4. According to this configuration, the upright / downward state of the leg 6 can be reliably achieved by the urging force of the spring 72, and the configuration can be simplified and the cost can be reduced. In addition, the urging force P by the coil spring 22 of the hinge 14 with spring is used.
Is not limited to a hinge with a spring, but a resilient body such as a leaf spring can be used as the biasing mechanism. [Effects of the Invention] As is apparent from the detailed description above, according to the present invention, a bar is provided for connecting the bases of a pair of table legs, which are spaced apart from each other, and the pair of table legs are formed on the bar in the falling direction. A hinge with a spring as an urging mechanism is provided, and the hinge with a spring is provided between a pair of spring holding portions and a pair of spring holding portions which are connected to the support member and which are fixed to the crosspiece and are opposed to each other. A support pin, a coil spring mounted on the support pin, and a connecting portion rotatably mounted on the support pin, one end of the coil spring biasing the connecting portion in a direction away from the back surface of the face plate. One end of the operating body is attached to the connecting body, and the other end of the operating body is provided with the biasing force of the biasing mechanism at the other end of the operating body. When the pair of table legs are kept in a lying state when the pair of table legs fall down In both cases, a lock mechanism is provided to lock the pair of table legs in the standing state when the pair of table legs are standing, and the locking mechanism is provided at the other end side of the operating body on the falling leg side locking slope portion and the falling leg side locking slope portion. A protruding flat portion connected to the protruding portion, a rising-side locking slope portion connected to the protruding flat portion, and a locking tip portion connected to the raising-side locking slope portion are formed. An insertion space to be inserted into the end side is formed, and a locking fixed body fixed to the back surface of the face plate is provided. The locking fixed body slides a protruding flat portion of the operating body and a locking tip of the operating body. The fallen-side locking edge portion of the operating body is locked at one end of the central abdomen and one end of the central abdomen. By forming the starting edge side locking edge portion to which the stopping edge portion is locked, the tabletop can be operated by one-touch operation when the tabletop leg falls down. The table legs are easily lowered and the table legs are kept in a locked state by the lock mechanism. Locking is performed by the lock mechanism, the table legs are firmly held, and the usability can be improved. Further, according to the configuration of the present invention, a hinge with a spring is provided as an urging mechanism, one end of the operating body is attached to the hinge with the spring, and further, the other end of the operating body is locked and fixed. Since the lock mechanism is simply constituted by the body, the number of parts is small, the configuration is simple, the handling is simple, the operability is improved, the occurrence of failures is reduced, and the cost can be reduced.

【図面の簡単な説明】 第１〜10図はこの発明の第１実施例を示し、第１図は卓
子裏面の平面図、第２図は第１図のII−II線による卓子
の断面図、第３図は付勢機構の概略縦断面図、第４図は
付勢機構の平面図、第５図はロック機構の側面図、第６
図は操作体の先端側の拡大側面図、第７図はロック機構
の平面図、第８図は脚の起立状態における卓子の一部断
面図、第９図は脚の倒伏動作時における卓子の一部断面
図、第10図は脚の倒伏状態における卓子の一部断面図で
ある。 第11〜13図はこの発明の第２実施例を示し、第11図は脚
の起立状態における卓子の一部断面図、第12図は脚の倒
伏動作時における卓子の一部断面図、第13図は脚の倒伏
状態における卓子の一部断面図である。 第14、15図はこの発明の第３実施例を示し、第14図は脚
の起立状態における卓子の一部断面図、第15図は脚の倒
伏状態における卓子の一部断面図である。 第16、17図はこの発明の第４実施例を示し、第16図は脚
の起立状態における卓子の一部断面図、第17図は脚の倒
伏状態における卓子の一部断面図である。 第18図はこの発明の他の実施例を示し、ロック機構の側
面図である。 図において、２は卓子、４は面板、4aは裏面、６は脚、
10は桟、12は付勢機構、14はばね付蝶番、22はコイルば
ね、24は連絡体、26は操作体、28はロック機構、30は倒
脚側係止斜面部、32は起脚側係止斜面部、36は係止固定
体、そして44は挿通空間部である。BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 10 show a first embodiment of the present invention, FIG. 1 is a plan view of the back of a table, and FIG. 2 is a sectional view of the table taken along the line II-II in FIG. 3 is a schematic longitudinal sectional view of the urging mechanism, FIG. 4 is a plan view of the urging mechanism, FIG. 5 is a side view of the lock mechanism, and FIG.
FIG. 7 is an enlarged side view of the distal end side of the operation body, FIG. 7 is a plan view of the lock mechanism, FIG. 8 is a partial cross-sectional view of the table in a standing state of the legs, and FIG. FIG. 10 is a partial cross-sectional view of the tabletop in a state in which the legs are lying down. 11 to 13 show a second embodiment of the present invention. FIG. 11 is a partial cross-sectional view of the tabletop when the legs are standing, FIG. 12 is a partial cross-sectional view of the tabletop when the legs fall down, FIG. 13 is a partial cross-sectional view of the tabletop in a state where the legs are lying down. FIGS. 14 and 15 show a third embodiment of the present invention. FIG. 14 is a partial sectional view of the tabletop in a standing state of the legs, and FIG. 15 is a partial sectional view of the tabletop in a standing state of the legs. 16 and 17 show a fourth embodiment of the present invention. FIG. 16 is a partial cross-sectional view of the tabletop in a standing state of the legs, and FIG. 17 is a partial cross-sectional view of the tabletop in a standing state of the legs. FIG. 18 shows another embodiment of the present invention, and is a side view of a lock mechanism. In the figure, 2 is a table, 4 is a face plate, 4a is a back surface, 6 is a leg,
10 is a bar, 12 is a biasing mechanism, 14 is a hinge with a spring, 22 is a coil spring, 24 is a connecting body, 26 is an operating body, 28 is a lock mechanism, 30 is a slope on the falling side, and 32 is a standing leg A side locking slope portion, 36 is a locking fixed body, and 44 is an insertion space portion.

Claims (1)

(57)【特許請求の範囲】 １．卓子脚を面板の裏面側に折畳み可能に支持する卓子
脚の支持装置において、離間して配置した一対の卓子脚
の夫々基部を連結する桟を設け、この桟には前記一体の
卓子脚を倒伏方向に付勢する付勢機構としてのばね付蝶
番を設け、このばね付蝶番は前記桟に固着される支持部
材とこの支持部材に連設されて対峙する一対のばね保持
部とこの一対のばね保持部間に横架される支持ピンとこ
の支持ピンに装着されるコイルばねと前記支持ピンに回
動可能に装着される連絡部とからなり、前記コイルばね
は前記連絡部を前記面板の裏面から離間する方向に付勢
するように一端側が前記支持部材に当接するとともに他
端側が前記連絡部に当接して設けられ、前記連絡体には
操作体の一端側を取着して設け、この操作体の他端側に
は前記付勢機構の付勢力を利用して前記一対の卓子脚の
倒伏時に前記一対の卓子脚を倒伏状態に維持するととも
に前記一対の卓子脚の起立時には前記一対の卓子脚を起
立状態にロックするロック機構を設け、このロック機構
は、前記操作体の他端側に倒脚側係止斜面部とこの倒脚
側係止斜面部に連設された突出平坦部とこの突出平坦部
に連設された起脚側係止斜面部とこの起脚側係止斜面部
に連設された係止先端部とを形成するとともに、前記操
作体の他端側を挿通させる挿通空間を形成して前記面板
の裏面に固定される係止固定体を設け、且つ、この係止
固定体には前記操作体の前記突出平坦部を滑動させると
ともに前記操作体の前記係止先端部を係止させる中央腹
部とこの中央腹部の一端側で前記操作体の前記倒脚側係
止斜面部が係止される倒脚側係止縁部と前記中央腹部の
他端側で前記操作体の前記起脚側係止縁部が係止される
起脚側係止縁部とを形成して構成されたことを特徴とす
る卓子脚の支持装置。(57) [Claims] In a table leg supporting device for supporting a table leg on a back side of a face plate so as to be foldable, a bar is provided for connecting the bases of a pair of table legs, which are spaced apart from each other, and the bar is formed by lowering the integrated table leg. A spring-loaded hinge is provided as a biasing mechanism for biasing in the direction, the spring-loaded hinge is provided with a support member fixed to the crosspiece, a pair of spring holding portions connected to the support member and facing each other, and the pair of springs. The support pin includes a support pin that is suspended between the holding portions, a coil spring mounted on the support pin, and a communication portion rotatably mounted on the support pin. The coil spring moves the communication portion from the back surface of the face plate. One end is in contact with the support member and the other end is in contact with the communication portion so as to urge in the direction of separation, and the communication body is provided with one end of an operating body attached thereto. The other end of the body is biased by the biasing mechanism A locking mechanism is provided for maintaining the pair of table legs in the lying state when the pair of table legs are lying down and for locking the pair of table legs in the standing state when the pair of table legs are standing up; The mechanism includes a falling-side locking slope at the other end of the operating body, a protruding flat portion connected to the falling-side locking slope, and a raising-side locking connected to the protruding flat portion. A slope portion and a locking tip portion connected to the rising-side locking slope portion are formed, and an insertion space through which the other end of the operating body is inserted is formed, and is fixed to the back surface of the face plate. A locking fixed body is provided, and the locking fixed body has a central abdomen for sliding the protruding flat portion of the operating body and locking the locking tip of the operating body, and one end of the central abdominal portion. A falling edge locking edge portion on which the falling leg locking slope portion of the operating body is locked with A support leg for the table leg, wherein the other end of the central abdomen is formed with a locking edge on the raising side on which the locking edge on the raising side is locked. .