JP3810282B2

JP3810282B2 - Folding workbench

Info

Publication number: JP3810282B2
Application number: JP2001140618A
Authority: JP
Inventors: 豊山岡
Original assignee: Alinco Inc
Current assignee: Alinco Inc
Priority date: 2001-05-10
Filing date: 2001-05-10
Publication date: 2006-08-16
Anticipated expiration: 2021-05-10
Also published as: JP2002339564A

Description

【０００１】
【発明の属する技術分野】
本発明は、折り畳み作業台の天板部の左右両端側に、夫々脚部を、天板部下面に折り畳んだ閉脚状態と下方に向けて起立した開脚状態とに開閉可能に枢着するための枢着金具を作業台の両端部に設けた折り畳み作業台に関するものである。
【０００２】
【従来の技術】
図１０は従来の折り畳み作業台１１を開脚状態で示す正面図、図１１は側面図、図１２は同作業台１１を閉脚状態で示す正面図である。図１３の（Ａ）は図１０の一部拡大図、（Ｂ）は図１２の一部拡大図である。この折り畳み作業台１１は、天板部２の左右両端部に、脚部３，３を、枢着金具１４，１５によって、天板部２の下面に折り畳んだ閉脚状態と下方に向けて起立した開脚状態とに開閉可能に枢着したものである。各脚部３は、略ハの字状に末広がりに配設された両側一対の脚柱７，７と、両脚柱７，７に複数段状に横架された踏桟８とからなる。１６は各脚部３を開脚状態に固定するストッパーである。
【０００３】
ここに示す折り畳み作業台１１のように、脚部３の長さが天板部２の長さと同程度に長い折り畳み作業台では、脚部３を閉脚状態に折り畳んで収納する場合、左右の脚部３，３が干渉することを避けるために、図１２に示すように、一方の脚部３、例えば右側の脚部３を天板部２の下面に当接するように折り畳んだ後、この右側脚部３の下面に当接するように折り畳んだ左側の脚部３が、天板部２と平行になるような折り畳み構造とすることにより、折り畳み作業台１１を多段状に積載するのが容易となり、輸送や保管の際に有効である。
【０００４】
上記のように、天板部２と、この天板部２下面に先に折り畳んだ脚部３に後から折り畳んでそれに重ねた他方の脚部３とが平行になるような折り畳み構造とするために、従来にあっては、天板部２の一端側に脚部３を枢着する枢着金具と、天板部２の他端側に脚部３を枢着する枢着金具とに、互いに大きさの異なる金具を使用している。即ち、図１２に示すように、先に折り畳む脚部３を天板部２に枢着する枢着金具１４は、その脚部３が天板部２と近接する状態に折り畳まれるように、枢支軸６周りの回転半径の小さい小型枢着金具とし、後から折り畳む脚部３を天板部２に枢着する枢着金具１５は、先に折り畳む脚部３との干渉を避けるための空間を天板部２下面との間に形成するように、枢支軸６周りの回転半径の大きい大型枢着金具としている。
【０００５】
詳しくは、図１３から分かるように、小型の枢着金具１４は、天板部２の一端側に取り付けられる固定連結板１４ａと、一方の脚部３に取り付けられる可動連結板１４ｂと、両連結板１４ａ，１４ｂの互いに重合する突出板部ａ，ｂを枢支連結する枢支軸６とからなり、枢支軸６は天板部２の下面からδだけ離れた位置で突出板部ａ，ｂを貫通するように設けてある。また、大型の枢着金具１５は、天板部２の他端側に取り付けられる固定連結板１４Ａと、他方の脚部３に取り付けられる可動連結板１４Ｂと、両連結板１４Ａ，１４Ｂの互いに重合する突出板部Ａ，Ｂを枢支連結する枢支軸６とからなり、枢支軸６は天板部２の下面からΔ（＞δ）だけ離れた位置で突出板部ａ，ｂを貫通するように設けてある。
【０００６】
図１３の（Ａ）に示すように開脚状態にある折り畳み作業台１１を折り畳む時に、小回転半径の小型枢着金具１４で枢着された方の脚部３を先に折り畳むと、この脚部３は天板部２下面と近接状態に収納され、その後に大回転半径の大型枢着金具１５で枢着された方の脚部３を折り畳むことにより、その脚部３は、天板部２下面との間に先に折り畳んだ脚部３との干渉を避けるための空間Ｓを維持しながら収納され、従って図２０に示すように、天板部２と、先に折り畳んだ脚部３に重ねて折り畳んだ後の脚部３とが平行になる。
【０００７】
【発明が解決しようとする課題】
上記のように、１台の折り畳み作業台を製造するのに、小型枢着金具１４と大型枢着金具１５が必要とされるが、更に詳しく云えば、小型の枢着金具１４は、固定連結板１４ａと可動連結板１４ｂとの２種類の連結板を有し、大型の枢着金具１５も、固定連結板１４Ａと可動連結板１４Ｂとの２種類の連結板を有するから、４種類の連結板となるが、枢着金具は天板部２の左右両端側の前後２箇所ずつ合わせて４箇所に取り付けられるものであって、しかも天板部２の左右何れか一端側に小型枢着金具１４を、他端側に大型枢着金具１５を取り付ける場合は、天板部２の左右各端部の前後に同じ枢着金具を使用できないため、結局のところ８種類の連結板が必要となる。このように１台の折り畳み作業台の製造に８種類もの部品（連結板）を製作する必要があるため、部品管理が複雑化する上に、金型製作費が非常に高くついて、折り畳み作業台の製造コストの高騰を来すと云う問題がある。
【０００８】
本発明は、上記に鑑み、枢着金具の構成部品の種類を極力少なくできて、折り畳み作業台の製造コストの低廉化を図ることのできるようにした折り畳み作業台、特にその枢着金具を提供することを目的とする。
【０００９】
【課題を解決するための手段】
請求項１に係る発明は、図４、図５に示す実施形態を示すもので、作業台１の天板部２の左右両端側の、夫々脚部３を、天板部２下面に折り畳んだ閉脚状態と下方に向けて起立した開脚状態とに開閉可能に枢着するための枢着金具４，５を作業台天板部２の両端部に設けた折り畳み作業台であって、枢着金具４，５は、天板部２側に取り付けられる固定連結板９と、脚部３側に取り付けられる可動連結板１０と、両連結板９，１０の互いに重合する突出板部１８，２０を枢支連結する枢支軸６と、からなり、固定連結板９の突出板部１８には天板部２に近い位置に第１軸孔９ａを、天板部２より遠い位置に第２軸孔９ｂを所要の対向間隔を有して夫々設け、可動連結板１０の突出板部２０には第１軸孔１０ａ及び第２軸孔１０ｂを固定連結板９側の前記第１及び第２の両軸孔９ａ，９ｂと重合するように同間隔に設け、しかして作業台天板部２の両端部に設けた枢着金具４，５のうち、いずれか一端部の枢着金具４の両連結板９，１０の互いに重合する突出板部１８，２０の第１軸孔９ａ，１０ａに一方の枢支軸６を挿通させ、他端部の枢着金具５の両連結板９，１０の互いに重合する突出板部１８，２０の第２軸孔９ｂ，１０ｂに他方の枢支軸６を挿通させてなることを特徴とする。なお、図７に示す実施形態では、枢着金具の符号は３０となっている。
【００１０】
請求項２に係る発明は、図８に示す実施形態を示すもので、作業台１の天板部２の左右両端側の、夫々脚部３を、天板部２下面に折り畳んだ閉脚状態と下方に向けて起立した開脚状態とに開閉可能に枢着するための枢着金具４０を作業台天板部２の両端部に設けた折り畳み作業台であって、枢着金具４０は、天板部２側に取り付けられる固定連結板９と、脚部３側に取り付けられる可動連結板１０と、両連結板９，１０の互いに重合する突出板部１８，２０を枢支連結する枢支軸６と、からなり、固定連結板９の突出板部１８には脚部３に近い位置に第１軸孔９ａを、脚部３より遠い位置に第２軸孔９ｂを所要の対向間隔を有して夫々設け、可動連結板１０の突出板部２０には第１軸孔１０ａ及び第２軸孔１０ｂを固定連結板９側の前記第１及び第２の両軸孔９ａ，９ｂと重合するように同間隔に設け、しかして作業台天板部２の両端部に設けた枢着金具４０，４０のうち、いずれか一端部の枢着金具４０の両連結板９，１０の互いに重合する突出板部１８，２０の第１軸孔９ａ，１０ａに一方の枢支軸６を挿通させ、他端部の枢着金具４０の両連結板９，１０の互いに重合する突出板部１８，２０の第２軸孔９ｂ，１０ｂに他方の枢支軸６を挿通させてなることを特徴とする。
【００１１】
請求項３に係る発明は、図９に示す実施形態を示すもので、作業台１の天板部２の左右両端側の、夫々脚部３を、天板部２下面に折り畳んだ閉脚状態と下方に向けて起立した開脚状態とに開閉可能に枢着するための枢着金具５０を作業台天板部２の両端部に設けた折り畳み作業台であって、枢着金具５０は、天板部２側に取り付けられる固定連結板９と、脚部３側に取り付けられる可動連結板１０と、両連結板９，１０の互いに重合する突出板部１８，２０を枢支連結する枢支軸６と、からなり、固定連結板９の突出板部１８には天板部２及び脚部３の何れにも近い位置に第１軸孔９ａを、天板部２及び脚部３の何れからもより遠い位置に第２軸孔９ｂを所要の対向間隔を有して夫々設け、可動連結板１０の突出板部２０には第１軸孔１０ａ及び第２軸孔１０ｂを固定連結板９側の前記第１及び第２の両軸孔９ａ，９ｂと重合するように同間隔に設け、しかして作業台天板部２の両端部に設けた枢着金具５０，５０のうち、いずれか一端部の枢着金具５０の両連結板９，１０の互いに重合する突出板部１８，２０の第１軸孔９ａ，１０ａに一方の枢支軸６を挿通させ、他端部の枢着金具５０の両連結板９，１０の互いに重合する突出板部１８，２０の第２軸孔９ｂ，１０ｂに他方の枢支軸６を挿通させてなることを特徴とする。
【００１２】
請求項４は、請求項１〜３の何れかに記載の折り畳み作業台において、枢着金具は、固定連結板９は、天板部２の側端面２ａに取着される取着板部１７と、取着板部１７からこれと同一平面状に突出する突出板部１８とからなり、可動連結板１０は、略ハの字状に末広がりに配設された脚部３の両側一対の脚柱７，７の各脚柱７の外側端面７ａに取着される取着板部１９と、固定連結板９の突出板部１８と重合する突出板部２０と、この突出板部２０と前記取着板部１９とをつなぐ傾斜状段部２１とからなることを特徴とする。
【００１３】
請求項５は、請求項１〜３の何れかに記載の折り畳み作業台において、枢着金具は、固定連結板９は、天板部２の側端面２ａに取着される取着板部１７と、取着板部１７からこれと同一平面に沿って突出する突出板部１８とからなり、可動連結板１０は、少なくとも上端部が平行に配設された脚部３の両側一対の脚柱７，７の各脚柱７の上端平行部７ｏ外側端面に取着される取着板部１９と、取着板部１９からこれと同一平面状に突出し、固定連結板９の突出板部１８と重合する突出板部２０とからなる。
【００１４】
【発明の実施の形態】
図１は本発明に係る枢着金具４，５を用いて製造された折り畳み作業台１を開脚状態で示す正面図、図２は側面図、図３は同作業台１を閉脚状態で示す正面図である。この折り畳み作業台１は、天板部２の左右両端側に、脚部３，３を、枢着金具４，５によって、天板部２の下面に折り畳んだ閉脚状態と下方に向けて起立した開脚状態とに開閉可能に枢着してなるもので、各脚部３は、略ハの字状に末広がりに配設された両側一対の脚柱７，７と、両脚柱７，７に横架された複数の踏桟８とで形成されている。この作業台１では、枢着金具４は、図１に関して天板部２の右端部前面側と左端部後面側との２箇所に取り付けられ、枢着金具５は、天板部２の左端部前面側と、右端部後面側との２箇所に取り付けられている。１６は各脚部３を開脚状態に固定するストッパーである。
【００１５】
図４は作業台１の開脚状態を示す図１の一部拡大図、図５は閉脚状態を示す図３の一部拡大図である。また図６の（Ａ）は図４のＸ−Ｘ線断面図である。これらの図面から分かるように、各枢着金具４，５は、天板部２側に取り付けられる固定連結板９と、脚部３側に取り付けられる可動連結板１０と、これら両連結板９，１０の互いに重合する突出板部１８，２０を枢支連結する枢支軸６と、からなるもので、各固定連結板９は、天板部２の側端面２ａに取着される取着板部１７と、この取着板部１７からこれと同一平面状に突出する突出板部１８とによって形成され、各可動連結板１０は、略ハの字状に末広がりに配設された脚部３の両側一対の脚柱７，７の各脚柱７の外側端面７ａに取着される取着板部１９と、前記固定連結板９の突出板部１８と重合する突出板部２０と、この突出板部２０と前記取着板部１９とをつなぐ傾斜状段部２１とによって形成される。
【００１６】
各枢着金具４，５の固定連結板９及び可動連結板１０は、夫々鋼板をプレス加工することによって形成されるもので、このプレス加工には金型が使用される。各可動連結板１０の傾斜状段部２１は、天板部２の側端面２ａと平行な面に沿って配置される突出板部２０と、略ハの字状に配設された脚部３の両脚柱７，７の各脚柱７の傾斜状外側端面７ａに取着される取着板部１９との段差を埋めるように形成されたもので、図４に示す枢着金具４，５の正面図では三角形を成している。
【００１７】
図４及び図５に示すように、固定連結板９の突出板部１８には天板部２に近い位置（天板部２から所定距離λだけ離れた位置）に第１軸孔９ａが設けられ、それよりも遠い位置（天板部２から所定距離Λだけ離れた位置）に第２軸孔９ｂが第１軸孔９ａと所要の対向間隔を有して設けられ、また可動連結板１０の突出板部２０には第１軸孔１０ａ及び第２軸孔１０ｂが、脚部３から夫々略等距離の位置に固定連結板９側の第１及び第２の両軸孔９ａ，９ｂの対向間隔と同間隔に設けられていて、両連結板９，１０の第１軸孔９ａ，１０ａ又は第２軸孔９ｂ，１０ｂに選択的に枢支軸６が挿通されるようになっている。
【００１８】
しかして、枢支軸６を両連結板９，１０の第１軸孔９ａ，１０ａに挿通した場合、脚部３を折り畳んで閉脚すると、この脚部３は天板部２に接近した状態となる。また、両連結板９，１０の第２軸孔９ｂ，１０ｂに枢支軸６を挿通した場合は、脚部３を折り畳んで閉脚すると、この脚部３は、天板部２下面との間に所要の空間部Ｓ（１つの脚部３を収容し得る空間部）を形成する状態となる。
【００１９】
この折り畳み作業台１では、図３〜図５から分かるように、各図に関して天板部２の右端側の枢着金具４は、両連結板９，１０の突出板部１８，２０の第１軸孔９ａ，１０ａに枢支軸６を挿通したものであり、左端側の枢着金具５は、両連結板９，１０の突出板部１８，２０の第２軸孔９ｂ，１０ｂに枢支軸６を挿通したものである。従って、この作業台１を折り畳んで閉脚状態にする時は、枢着金具４で天板部２に枢着された右側の脚部３を天板部２下面に当接するように折り畳んだ後に、枢着金具５で枢着された左側の脚部３を折り畳むことによって、天板部２と、後から折り畳んだ脚部３とが、図３に示すように平行状態となる。
【００２０】
各枢着金具４，５において、固定連結板９の取着板部１７には、脚部３が開脚した時に可動連結板１０の取着板部１９の上部内端面２２を当接支持する半円状のストッパー部２３が設けてある。また各枢着金具４，５には可動連結板１０の突出板部２０に、脚部３を開脚状態にロックするためにロックピン２４を突入させるピン挿通孔２５と、脚部３を閉脚状態にロックするためにロックピン２４を突入させるピン挿通孔２６，３２とが設けられている。ロックピン２４は、図６（Ａ）に示すように、天板部２の左右各端面側に設けられた取付部材３１に、コイルばね２７により、固定連結板９のピン貫通孔（図示省略）から可動連結板１０のピン挿通孔２５，２６，３２に突入する方向に付勢されるように取り付けられている。しかして、図５に示す閉脚時には、ロックピン２４は、各枢着金具４，５において、可動連結板１０のピン挿通孔２５に挿通され、また図６に示す閉脚時には、ロックピン２４は、枢支軸６を両連結板９，１０の第１軸孔９ａ，１０ａに挿通した枢着金具４では可動連結板１０のピン挿通孔２６に挿通され、枢支軸６を両連結板９，１０の第２軸孔９ｂ，１０ｂに挿通した枢着金具５では可動連結板１０のピン挿通孔３２に挿通されるようになっている。
【００２１】
以上説明した実施形態の枢着金具４，５は、天板部２側に取り付けられる固定連結板９の突出板部１８には天板部２に近い位置に第１軸孔９ａを、それより遠い位置に第２軸孔９ｂを設け、可動連結板１０の突出板部２０には第１軸孔１０ａ及び第２軸孔１０ｂを、脚部３から略等距離の位置に固定連結板９側の第１及び第２の両軸孔９ａ，９ｂと同間隔に設け、両連結板９，１０の両第１軸孔９ａ，１０ａ又は両第２軸孔９ｂ，１０ｂに枢支軸６を挿通するようにしたもので、この枢着金具４，５を、天板部２の左右両端側とその前後両端側との４箇所に取り付けるには、枢着金具４の固定連結板９及び可動連結板１０と、枢着金具５の固定連結板９及び可動連結板１０との、合わせて４種類の連結板を製作すればよいことになる。
【００２２】
即ち、図１〜図６に示す実施形態の作業台１は、脚部３の両脚柱７，７が略ハの字状に配設された構造のもので、枢着金具の可動連結板１０が、略ハの字状に配設された脚部３の各脚柱７の外側端面７ａに取着される取着板部１９と、固定連結板９の突出板部１８と重合する突出板部２０と、この突出板部２０と前記取着板部１９とをつなぐ傾斜状段部２１とからなるため、天板部２の一端側に取り付けられる枢着金具４と他端側に取り付けられる枢着金具５とは、左右対称形状ではあるが、同一形状ではないから、連結板の種類は、枢着金具４の固定連結板９及び可動連結板１０の２種類と、枢着金具５の固定連結板９及び可動連結板１０の２種類とを合わせた４種類となる。
【００２３】
上述したように、天板部２の左右両端側とその前後両端側との４箇所に取り付ける枢着金具として、４種類の連結板（金具構成部材）を製作すればよいから、８種類の連結板（金具構成部材）が必要であった従来の枢着金具の半分で済み、従って枢着金具を製作するにあたっての初期金型投資費用が半減し、折り畳み作業台の製造コストの低廉化が可能となる。
【００２４】
また、折り畳み作業台１を組み立てる際に、図１０〜図１３で示したような回転半径の小さい小型枢着金具１４と回転半径の大きい大型枢着金具１５を必要とする従来の枢着金具であれば、小型枢着金具１４が固定連結板１４ａと可動連結板１４ｂとで構成され、また大型枢着金具１５が固定連結板１５ａと可動連結板１５ｂとで構成されていて、夫々構成部品が異なっているため、各枢着金具１４，１５を夫々必ずセットで天板部２の左右両端部と各脚部３とに取り付ける必要があるが、本発明に係る枢着金具４，５は、各突出板部１８，２０に第１軸孔９ａ，１０ａと第２軸孔９ｂ，１０ｂの２つの軸孔を備えた固定連結板９と可動連結板１０とから構成されるものであって、何れの枢着金具４，５においても、枢支軸６を両連結板９，１０の第１軸孔９ａ，１０ａに挿通すれば、天板部２に接近する状態に脚部３を折り畳みできるし、第２軸孔９ｂ，１０ｂに挿通すれば、天板部２の下面側に所要空間部Ｓを形成できるから、作業台１の組み立て時には、各枢着金具４，５の固定連結板９と可動連結板１０とを切り離して天板部２と脚部３とに取り付けておいて、枢支軸６を第１軸孔９ａ，１０ａに挿通するか、第２軸孔９ｂ，１０ｂに挿通するかは、作業台１の最終組み立て時に適宜に選択するようにすれば、製造工程の合理化が図られて、作業台１の組立作業能率を向上させることができる。
【００２５】
以上説明した実施形態の枢着金具４，５は、脚部３の両脚柱７，７が略ハの字状に配設された折り畳み作業台１に取り付けられたものであるが、図７には、両側一対の脚柱７，７の上端部分が平行に形成された折り畳み作業台１′を示し、この作業台１′に取り付けられる枢着金具３０を図６の（Ｂ）に示している。脚柱７，７の上端側平行部分を図中に７ｏ，７ｏで示す。この枢着金具３０も、前述の枢着金具４，５と同様に、天板部２の左右両端側とその前後両端側との４箇所に取り付けられる。
【００２６】
この枢着金具３０は、図４及び図５に示す枢着金具４，５と同様に、天板部２側に取り付けられる固定連結板９と、脚部３側に取り付けられる可動連結板１０と、これら両連結板９，１０の互いに重合する突出板部１８，２０を枢支連結する枢支軸６とからなり、また固定連結板９も、枢着金具４，５と同様に、天板部２の側端面２ａに取着される取着板部１７と、この取着板部１７からこれと同一平面状に突出する突出板部１８とによって形成されている。この枢着金具３０が枢着金具４，５と異なるのは、可動連結板１０が、脚部３の各脚柱７の上端平行部７ｏ，７ｏ外側端面に取着される取着板部１９と、この取着板部１９からこれと同一平面状に突出し、可動連結板１０の突出板部１８と重合する突出板部２０とによって形成されていることである。要するに、この枢着金具３０は、図６の（Ｂ）に示すように、可動連結板１０の全体が固定連結板９と同様に平板状に形成されている点である。他の点については、枢着金具４，５と同様である。
【００２７】
このような枢着金具３０によれば、固定連結板９及び可動連結板１０が共に平板状であるため、反転した状態での使用が可能となり、従って天板部２の左右両端側とその前後両端側との４箇所に同じ枢着金具３０を使用することができる。従って、この枢着金具３０の固定連結板９と可動連結板１０の２種類の連結板を製作すればよいことになり、前記枢着金具４，５よりも初期金型投資費用が更に安くなる。
【００２８】
以上説明した実施形態の枢着金具４，５，３０では、第１軸孔９ａ，１０ａが天板部２に近い位置に、また第２軸孔９ｂ，１０ｂがそれより遠い位置になるよう所要の対向間隔を有して設けられたものであるが、図８には、第１軸孔９ａ，１０ａが脚部３に近い位置に、また第２軸孔９ｂ，１０ｂがそれより遠い位置になるよう所要の対向間隔を有して設けられた更に他の実施形態による枢着金具４０を示す。即ち、この枢着金具４０では、取着板部１７が天板部２側に取着される固定連結板９の突出板部１８には脚部３に近い位置に第１軸孔９ａを、それより遠い位置に第２軸孔９ｂを設け、また取着板部１９が脚部３側に取着される可動連結板１０の突出板部２０にも、脚部３に近い位置に第１軸孔１０ａを、それより遠い位置に第２軸孔１０ｂを設け、両連結板９，１０の第１軸孔９ａ，１０ａ又は第２軸孔９ｂ，１０ｂに枢支軸６を挿通するようにしたものである。
【００２９】
図８の（Ａ）は、枢支軸６を両連結板９，１０の第１軸孔９ａ，１０ａに挿通して、脚部３を開脚した状態を示す。しかして、この開脚状態から脚部３を折り畳むと、この脚部３は、同図の（Ｂ）に示すように天板部２に接近した状態となる。また、枢支軸６を両連結板９，１０の第２軸孔９ｂ，１０ｂに挿通すれば、脚部３を折り畳むことによって、この脚部３は、同図の（Ｃ）に示すように、天板部２の下面側に、この脚部３と対向する側の脚部３を収容し得る空間部Ｓを形成して、その対向側の脚部３を収容した状態で天板部２と平行となる。
【００３０】
図９には、第１軸孔９ａ，１０ａが天板部２及び脚部３の何れにも近い位置に、また第２軸孔９ｂ，１０ｂが天板部２及び脚部３の何れからも遠い位置になるよう所要の対向間隔を有して設けられた更に他の実施形態による枢着金具５０を示す。即ち、この枢着金具５０では、取着板部１７が天板部２側に取着される固定連結板９の突出板部１８には第１軸孔９ａを天板部２及び脚部３の何れにも近い位置に設け、第２軸孔９ｂを天板部２及び脚部３の何れからも遠い位置に設け、また取着板部１９が脚部３側に取着される可動連結板１０の突出板部２０にも、第１軸孔１０ａを天板部２及び脚部３の何れにも近い位置に設け、第２軸孔１０ｂを天板部２及び脚部３の何れからも遠い位置に設け、そして両連結板９，１０の第１軸孔９ａ，１０ａ又は第２軸孔９ｂ，１０ｂに枢支軸６を挿通するようにしたものである。
【００３１】
図９の（Ａ）は、枢支軸６を両連結板９，１０の第１軸孔９ａ，１０ａに挿通して、脚部３を開脚した状態を示したもので、この開脚状態から脚部３を折り畳むと、この脚部３は、同図の（Ｂ）に示すように天板部２に接近した状態となり、また枢支軸６を両連結板９，１０の第２軸孔９ｂ，１０ｂに挿通した場合は、脚部３を折り畳むことによって、この脚部３は、同図の（Ｃ）に示すように、天板部２の下面側に、この脚部３と対向する側の脚部３を収容し得る空間部Ｓを形成して、その対向側の脚部３を収容した状態で天板部２と平行にすることができる。
【００３２】
【発明の効果】
請求項１〜３の何れかの発明に係る折り畳み作業によれば、それに用いられる枢着金具は、固定連結板と、可動連結板と、両連結板の突出板部を枢支連結する枢支軸とからなるもので、固定連結板の突出板部に第１軸孔と第２軸孔を所要の対向間隔で設け、可動連結板の突出板部には第１軸孔及び第２軸孔を固定連結板側の前記第１及び第２の両軸孔と重合するよう同間隔に設け、しかして枢支軸を両連結板の第１軸孔に挿通すると、脚部を天板部下面に接近した状態に折り畳みでき、また両連結板の第２軸孔に挿通すると、脚部を天板部下面側にこの脚部と対向する脚部を収容する空間部を形成するように折り畳みできるようにしたから、回転半径の小さい小型の枢着金具と回転半径の大きい大型の枢着金具を必要とする従来の枢着金具に比べ、金具構成部品の部品点数が半減し、枢着金具の金型製作費を大幅に低減できると共に、金具製作工程の合理化を図ることができて、折り畳み作業台の製造コストを低く抑えることができ、そしてまた枢着金具の修理及び保守の容易化を図ることができる。
【００３３】
この発明の枢着金具において、固定連結板と可動連結板の突出板部に第１軸孔及び第２軸孔を設けるにあたっては、請求項１に記載のように、第１軸孔を天板部に近い位置に、第２軸孔をそれより遠い位置になるよう所要の対向間隔を有して設けるものであり、あるいは請求項２に記載のように、第１軸孔を脚部に近い位置に、第２軸孔はそれより遠い位置になるよう所要の対向間隔を有して設けるものであり、あるいはまた請求項３に記載のように、第１軸孔を天板部及び脚部の何れにも近い位置に、第２軸孔を天板部及び脚部の何れからも遠い位置になるよう所要の対向間隔を有して設けるものとする。
【００３４】
請求項４に係る発明のように、固定連結板が、天板部の側端面に取着される取着板部と、取着板部からこれと同一平面状に突出する突出板部とからなり、可動連結板が、略ハの字状に末広がりに配設された脚部の一対の脚柱の各脚柱の外側端面に取着される取着板部と、固定連結板の突出板部と重合する突出板部と、この突出板部と前記取着板部とをつなぐ傾斜状段部とからなる枢着金具によれば、この枢着金具を、天板部の左右両端側とその前後両端側との４箇所に取り付ける場合には、天板部の左端側前部と右端側後部、及び天板部の右端部前部と左端側後部とに夫々同じ金具を使用できるから、４種類の連結板で済むことになる。
【００３５】
請求項５に係る発明のように、固定連結板が、天板部の側端面に取着される取着板部と、取着板部からこれと同一平面に沿って突出する突出板部とからなり、可動連結板が、少なくとも上端部が平行に配設された脚部の一対の脚柱の各脚柱の上端平行部外側端面に取着される取着板部と、取着板部からこれと同一平面状に突出し、固定連結板の突出板部と重合する突出板部とからなるものによれば、固定連結板と可動連結板が共に平板状であるから、反転した状態での使用が可能となって、天板部の左右両端側とその前後両端側との４箇所に同じ枢着金具を使用することができ、このため枢着金具の固定連結板と可動連結板との２種類の連結板を製作すればよく、金型製作費を著しく低減できて、折り畳み作業台の製造コストを一層安くできる。
【図面の簡単な説明】
【図１】本発明の一実施形態による枢着金具を用いて製造された折り畳み作業台を開脚状態で示す正面図である。
【図２】図１に示す作業台の側面図である。
【図３】同同作業台を閉脚状態で示す正面図である。
【図４】図１の一部拡大詳細図である。
【図５】図３の一部拡大詳細図である。
【図６】（Ａ）は図４のＸ−Ｘ線断面図であり、（Ｂ）は図７に示す折り畳み作業台の一部拡大断面図で、（Ａ）と同様な断面図である。
【図７】脚部の両側一対の脚柱の上端部分が平行に形成された作業台を示す図２と同様な側面図である。
【図８】本発明の他の実施形態による枢着金具の使用状態を示す説明図である。
【図９】本発明の更に他の実施形態による枢着金具の使用状態を示す説明図である。
【図１０】従来の折り畳み作業台を開脚状態で示す正面図である。
【図１１】図８に示す作業台の側面図である。
【図１２】同従来の作業台を閉脚状態で示す正面図である。
【図１３】（Ａ）は図８の一部拡大詳細図、（Ｂ）は図１０の拡大詳細図である。
【符号の説明】
１，１′ 作業台
２天板部
３脚部
４本発明に係る枢着金具
５本発明に係る枢着金具
６枢支軸
７脚部の脚柱
７ｏ脚柱の上端平行部分
９固定連結板
９ａ，１０ａ第１軸孔
９ｂ，１０ｂ第２軸孔
１０可動連結板
１７取着板部
１８突出板部
１９取着板部
２０突出板部
２１傾斜状段部
４０本発明に係る枢着金具
５０本発明に係る枢着金具[0001]
BACKGROUND OF THE INVENTION
  The present invention pivots the left and right ends of the top plate portion of the folding workbench so that the leg portions can be opened and closed in a closed leg state folded on the lower surface of the top plate portion and an open leg state standing downward. Pivot fittingsFolding work table provided at both ends of the work tableIt is about.
[0002]
[Prior art]
  10 is a front view showing a conventional folding workbench 11 in an open leg state, FIG. 11 is a side view, and FIG. 12 is a front view showing the workbench 11 in a closed leg state. 13A is a partially enlarged view of FIG. 10, and FIG. 13B is a partially enlarged view of FIG. This folding workbench 11 stood on both the left and right ends of the top plate portion 2 with the legs 3 and 3 folded to the lower surface of the top plate portion 2 by the pivot fittings 14 and 15 and downward. It is pivotally attached so that it can be opened and closed in the open leg state. Each leg portion 3 is composed of a pair of leg posts 7, 7 that are arranged in a substantially C-shape and spread out at the end, and a step bar 8 that is horizontally mounted in a plurality of stages on both leg posts 7, 7. Reference numeral 16 denotes a stopper for fixing each leg 3 in the open leg state.
[0003]
  In the folding work table in which the length of the leg portion 3 is as long as the length of the top plate portion 2 as in the folding work table 11 shown here, when the leg portion 3 is folded and stored in a closed leg state, In order to avoid interference between the portions 3 and 3, as shown in FIG. 12, one leg 3, for example, the right leg 3 is folded so as to contact the lower surface of the top plate 2, and then the right side A folding structure in which the left leg 3 folded so as to contact the lower surface of the leg 3 is parallel to the top plate 2 makes it easy to load the folding work table 11 in multiple stages. Effective during transportation and storage.
[0004]
  As described above, in order to have a folding structure in which the top plate portion 2 and the other leg portion 3 folded on and superimposed on the leg portion 3 previously folded on the lower surface of the top plate portion 2 are parallel to each other. In addition, in the past, a pivot fitting that pivotally attaches the leg 3 to one end of the top plate 2 and a pivot fitting that pivotally attaches the leg 3 to the other end of the top 2, Metal fittings with different sizes are used. That is, as shown in FIG. 12, the pivot fitting 14 that pivots the leg 3 that is folded first to the top plate 2 is pivoted so that the leg 3 is folded close to the top 2. A small pivot fitting with a small turning radius around the support shaft 6, and the pivot fitting 15 that pivots the leg 3 that is folded later on the top plate 2 is a space for avoiding interference with the leg 3 that is folded first. Is formed as a large-sized pivot fitting with a large turning radius around the pivot shaft 6 so as to be formed between the bottom plate 2 and the lower surface of the top plate 2.
[0005]
  Specifically, as can be seen from FIG. 13, the small pivot fitting 14 includes a fixed connection plate 14 a attached to one end side of the top plate portion 2, a movable connection plate 14 b attached to one leg portion 3, and both connections. The plates 14a and 14b are pivotally connected to the projecting plate portions a and b that overlap each other, and the pivot shaft 6 is separated from the lower surface of the top plate portion 2 by δ. It is provided so as to penetrate b. The large pivot fitting 15 is composed of a fixed connecting plate 14A attached to the other end of the top plate 2, a movable connecting plate 14B attached to the other leg 3, and both connecting plates 14A and 14B overlapping each other. The pivot plate 6 is pivotally connected to the projecting plate portions A and B. The pivot shaft 6 penetrates the projecting plate portions a and b at a position away from the lower surface of the top plate portion 2 by Δ (> δ). It is provided to do.
[0006]
  When the folding workbench 11 in the open leg state is folded as shown in FIG. 13A, when the leg 3 pivoted by the small pivot fitting 14 having a small turning radius is folded first, this leg The portion 3 is housed close to the lower surface of the top plate portion 2, and then the leg portion 3 pivoted by the large pivot fitting 15 having a large turning radius is folded, so that the leg portion 3 becomes the top plate portion 2. It is accommodated while maintaining the space S for avoiding interference with the leg part 3 folded first between the lower surface and the top board part 2 and the leg part 3 folded first as shown in FIG. The leg 3 after being folded and folded becomes parallel.
[0007]
[Problems to be solved by the invention]
  As described above, in order to manufacture one folding work table, the small pivot attachment 14 and the large pivot attachment 15 are required. More specifically, the small pivot attachment 14 is fixedly connected. Since there are two types of connection plates, the plate 14a and the movable connection plate 14b, and the large pivot fitting 15 also has two types of connection plates, the fixed connection plate 14A and the movable connection plate 14B, there are four types of connection. Although it is a plate, the pivot fittings are attached to four places in total, two on the left and right ends of the top plate portion 2, and small pivot fittings on either the left or right end of the top plate portion 2. 14 is attached to the other end side, and the same pivotal fitting cannot be used before and after each of the left and right ends of the top plate portion 2, so that eight kinds of connecting plates are required after all. . Thus, since it is necessary to manufacture as many as eight types of parts (connecting plates) for manufacturing a single folding work table, the parts management is complicated and the mold production cost is very high. There is a problem that the manufacturing cost of the product increases.
[0008]
  In view of the above, the present invention is a folding workbench in which the types of components of the pivot fitting can be reduced as much as possible, and the manufacturing cost of the folding workbench can be reduced.EspeciallyThe purpose is to provide a pivot fitting.
[0009]
[Means for Solving the Problems]
  The invention according to claim 1The embodiment shown in FIGS. 4 and 5 is shown.For pivotally mounting the leg portions 3 on both the left and right ends of the top plate portion 2 of the work table 1 so as to be openable and closable in a closed leg state folded on the bottom surface of the top plate portion 2 and an open leg state standing downward. Pivot fitting4 and 5 are folding work tables provided at both ends of the work table top 2.BecauseThe pivot brackets 4 and 5A fixed connection plate 9 attached to the top plate portion 2 side, a movable connection plate 10 attached to the leg portion 3 side, and a pivotal support for pivotally connecting the projecting plate portions 18 and 20 overlapping each other of the connection plates 9 and 10. The projecting plate portion 18 of the fixed connecting plate 9 includes a shaft 6.The first shaft hole 9a is located at a position close to the top plate 2 and the second shaft hole 9b is located far from the top plate 2.With the required facing distanceRespectivelyThe projecting plate portion 20 of the movable connecting plate 10 has a first shaft hole 10a and a second shaft hole 10b overlapped with the first and second shaft holes 9a and 9b on the fixed connecting plate 9 side. At intervals,Thus, among the pivot fittings 4 and 5 provided at both end portions of the work table top plate portion 2, the projecting plate portions 18 and 20 that overlap each other of the connecting plates 9 and 10 of the pivot fitting 4 at either one end portion are provided. One pivot shaft 6 is inserted into the first shaft holes 9a, 10a, and the second shaft holes 9b of the projecting plate portions 18, 20 are overlapped with each other of the connecting plates 9, 10 of the pivot fitting 5 at the other end. The other pivot shaft 6 is inserted into 10b.It is characterized by that.In the embodiment shown in FIG. 7, the reference numeral of the pivot fitting is 30.
[0010]
  The invention according to claim 2FIG. 9 shows the embodiment shown in FIG.For pivotally mounting the leg portions 3 on both the left and right ends of the top plate portion 2 of the work table 1 so as to be openable and closable in a closed leg state folded on the bottom surface of the top plate portion 2 and an open leg state standing downward. Pivot fitting40 is a folding work table provided at both ends of the work table top 2BecauseThe pivot fitting 40 isA fixed connection plate 9 attached to the top plate portion 2 side, a movable connection plate 10 attached to the leg portion 3 side, and a pivotal support for pivotally connecting the projecting plate portions 18 and 20 overlapping each other of the connection plates 9 and 10. The projecting plate portion 18 of the fixed connecting plate 9 includes a shaft 6.A first shaft hole 9 a is located near the leg 3, and a second shaft hole 9 b is located far from the leg 3.With the required facing distanceRespectivelyThe projecting plate portion 20 of the movable connecting plate 10 has a first shaft hole 10a and a second shaft hole 10b overlapped with the first and second shaft holes 9a and 9b on the fixed connecting plate 9 side. At intervals,Thus, of the pivoting metal fittings 40, 40 provided at both ends of the work table top plate 2, the projecting plate parts 18, 20 overlapping each other of the connecting plates 9, 10 of the pivotal metal fitting 40 at either one end. One pivot shaft 6 is inserted into the first shaft holes 9a, 10a, and the second shaft holes 9b of the projecting plate portions 18, 20 are overlapped with each other of the connecting plates 9, 10 of the pivot fitting 40 at the other end. The other pivot shaft 6 is inserted into 10b.It is characterized by that.
[0011]
  The invention according to claim 3FIG. 10 shows the embodiment shown in FIG.For pivotally mounting the leg portions 3 on both the left and right ends of the top plate portion 2 of the work table 1 so as to be openable and closable in a closed leg state folded on the bottom surface of the top plate portion 2 and an open leg state standing downward. Pivot fitting50 is provided at both ends of the work table top 2 Folding work tableBecauseThe pivot fitting 50 isA fixed connection plate 9 attached to the top plate portion 2 side, a movable connection plate 10 attached to the leg portion 3 side, and a pivotal support for pivotally connecting the projecting plate portions 18 and 20 overlapping each other of the connection plates 9 and 10. The projecting plate portion 18 of the fixed connecting plate 9 includes a shaft 6.The first shaft hole 9 a is located at a position close to both the top plate portion 2 and the leg portion 3, and the second shaft hole 9 b is located at a position farther from both the top plate portion 2 and the leg portion 3.With the required facing distanceRespectivelyThe projecting plate portion 20 of the movable connecting plate 10 has a first shaft hole 10a and a second shaft hole 10b overlapped with the first and second shaft holes 9a and 9b on the fixed connecting plate 9 side. At intervals,Thus, of the pivoting metal fittings 50, 50 provided at both ends of the work table top plate part 2, the projecting plate parts 18, 20 overlapping each other of the connecting plates 9, 10 of the pivotal metal fitting 50 at either one end part. One pivot shaft 6 is inserted through the first shaft holes 9a and 10a, and the second shaft holes 9b of the projecting plate portions 18 and 20 of the connecting plates 9 and 10 of the pivot fitting 50 at the other end overlap each other. The other pivot shaft 6 is inserted into 10b.It is characterized by that.
[0012]
  Claim 4 provides claims 1 to3Folding work as described in any ofOn the tableLeaveThe pivot fitting isThe fixed connecting plate 9 includes an attaching plate portion 17 attached to the side end surface 2a of the top plate portion 2, and a protruding plate portion 18 protruding from the attaching plate portion 17 in the same plane as the movable connecting plate. The plate 10 is fixed to an attachment plate portion 19 attached to the outer end surface 7a of each of the leg posts 7 of the pair of leg posts 7 and 7 on both sides of the leg portion 3 that is arranged in a substantially C-shape and spreads toward the end. The projecting plate portion 20 overlaps with the projecting plate portion 18 of the connecting plate 9 and an inclined stepped portion 21 that connects the projecting plate portion 20 and the mounting plate portion 19.
[0013]
  Claim 5 claims 1 to3Folding work as described in any ofOn the tableLeaveThe pivot fitting isThe fixed connecting plate 9 includes a mounting plate portion 17 attached to the side end surface 2a of the top plate portion 2, and a protruding plate portion 18 protruding from the mounting plate portion 17 along the same plane as the movable connecting plate portion 17. The connecting plate 10 has an attachment plate portion 19 attached to the outer end face of the upper end parallel portion 7o of each leg column 7 of the pair of leg posts 7 and 7 on both sides of the leg portion 3 at least arranged in parallel at the upper end portion. The protruding plate portion 20 protrudes from the mounting plate portion 19 in the same plane, and overlaps with the protruding plate portion 18 of the fixed connecting plate 9.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
  FIG. 1 is a front view showing a folding workbench 1 manufactured using pivot fittings 4 and 5 according to the present invention in an open state, FIG. 2 is a side view, and FIG. 3 shows the workbench 1 in a closed leg state. It is a front view. The folding work table 1 is erected on the left and right ends of the top plate portion 2 with the leg portions 3 and 3 folded to the lower surface of the top plate portion 2 by the pivot fittings 4 and 5 and downward. The leg 3 is pivotally attached to the open leg so that it can be opened and closed. It is formed with a plurality of side rails 8 that are horizontally mounted. In this workbench 1,The pivot fitting 4 is1, the top plate 2 is attached to two places on the front side of the right end and the rear side of the left end, and the pivoting metal fitting 5 is provided at two places on the front side of the left end of the top plate 2 and the rear side of the right end. Is attached. Reference numeral 16 denotes a stopper for fixing each leg 3 in the open leg state.
[0015]
  4 is a partially enlarged view of FIG. 1 showing the open leg state of the work table 1, and FIG. 5 is a partially enlarged view of FIG. 3 showing the closed leg state. 6A is a cross-sectional view taken along line XX in FIG. As can be seen from these drawings, each of the pivot fittings 4 and 5 includes a fixed connecting plate 9 attached to the top plate portion 2 side, a movable connecting plate 10 attached to the leg portion 3 side, 10, each of the fixed connecting plates 9 is attached to the side end surface 2 a of the top plate portion 2. The movable plate 10 is formed by a portion 17 and a protruding plate portion 18 that protrudes from the mounting plate portion 17 in the same plane, and each of the movable connecting plates 10 has a substantially C-shaped leg portion 3 disposed at the end. A pair of leg columns 7, 7, a mounting plate portion 19 attached to the outer end surface 7 a of each leg column 7, a protruding plate portion 20 that overlaps with the protruding plate portion 18 of the fixed connecting plate 9, It is formed by an inclined step portion 21 that connects the protruding plate portion 20 and the mounting plate portion 19.
[0016]
  The fixed connecting plate 9 and the movable connecting plate 10 of each pivot fitting 4 and 5 are formed by pressing a steel plate, and a die is used for this pressing. The inclined step portion 21 of each movable connecting plate 10 includes a protruding plate portion 20 disposed along a plane parallel to the side end surface 2a of the top plate portion 2, and a leg portion 3 disposed in a substantially C shape. 4 are formed so as to fill a step with the attachment plate portion 19 attached to the inclined outer end face 7a of each of the pillars 7 and 7, and the pivot fittings 4, 5 shown in FIG. In the front view of, a triangle is formed.
[0017]
  As shown in FIGS. 4 and 5, the protruding plate portion 18 of the fixed connecting plate 9 is provided with a first shaft hole 9a at a position close to the top plate portion 2 (a position away from the top plate portion 2 by a predetermined distance λ). The second shaft hole 9b is provided at a position farther than that (a position away from the top plate portion 2 by a predetermined distance Λ) with a predetermined facing distance from the first shaft hole 9a, and the movable connecting plate 10 A first shaft hole 10a and a second shaft hole 10b are formed in the protruding plate portion 20 of the first and second shaft holes 9a, 9b on the fixed connecting plate 9 side at positions substantially equidistant from the leg portion 3, respectively. The pivot shaft 6 is selectively inserted into the first shaft holes 9a and 10a or the second shaft holes 9b and 10b of the connecting plates 9 and 10 so as to be provided at the same interval as the facing space. .
[0018]
  Thus, when the pivot shaft 6 is inserted into the first shaft holes 9a and 10a of the connecting plates 9 and 10, when the leg portion 3 is folded and closed, the leg portion 3 approaches the top plate portion 2. Become. Further, when the pivot shaft 6 is inserted into the second shaft holes 9b and 10b of both the connecting plates 9 and 10, when the leg portion 3 is folded and closed, the leg portion 3 is located between the lower surface of the top plate portion 2 and the lower surface. Thus, a required space portion S (a space portion that can accommodate one leg portion 3) is formed.
[0019]
  In this folding work table 1, as can be seen from FIGS. 3 to 5, the pivotal metal fitting 4 on the right end side of the top plate portion 2 is the first of the projecting plate portions 18 and 20 of both connecting plates 9 and 10. The pivot shaft 6 is inserted into the shaft holes 9a and 10a, and the pivot fitting 5 on the left end side is pivotally supported in the second shaft holes 9b and 10b of the projecting plate portions 18 and 20 of the connecting plates 9 and 10. The shaft 6 is inserted. Therefore, when the work table 1 is folded into the closed leg state, the right leg 3 pivotally attached to the top plate 2 with the pivot fitting 4 is folded so as to contact the lower surface of the top plate 2. By folding the left leg 3 pivotally attached by the pivot fitting 5, the top plate 2 and the leg 3 folded later are in a parallel state as shown in FIG.
[0020]
  In each pivot fitting 4, 5, the leg portion 3 is attached to the attachment plate portion 17 of the fixed connection plate 9.OpenA semicircular stopper portion 23 that abuts and supports the upper inner end surface 22 of the mounting plate portion 19 of the movable connecting plate 10 when provided is provided. In addition, each pivot fitting 4, 5 has a pin insertion hole 25 into which a lock pin 24 is inserted into the protruding plate portion 20 of the movable connecting plate 10 to lock the leg portion 3 in an open state, and the leg portion 3 is closed. Pin insertion holes 26 and 32 through which the lock pin 24 is inserted are provided to lock the state. As shown in FIG. 6A, the lock pin 24 is attached to the mounting member 31 provided on each of the left and right end surfaces of the top plate portion 2 by a coil spring 27 and pin through holes (not shown) of the fixed connecting plate 9. To the pin insertion holes 25, 26, and 32 of the movable connecting plate 10. When the legs shown in FIG. 5 are closed, the lock pin 24 is inserted into the pin insertion hole 25 of the movable connecting plate 10 in each of the pivot fittings 4 and 5, and when the legs shown in FIG. In the pivot fitting 4 in which the pivot shaft 6 is inserted into the first shaft holes 9a, 10a of both the coupling plates 9, 10, the pivot shaft 6 is inserted into the pin insertion hole 26 of the movable coupling plate 10, and the pivot shaft 6 is inserted into the both coupling plates 9, 10a. The pivot fitting 5 inserted through the 10 second shaft holes 9 b and 10 b is inserted into the pin insertion hole 32 of the movable connecting plate 10.
[0021]
  The pivot fittings 4 and 5 of the embodiment described above have the first shaft hole 9a at the position close to the top plate portion 2 in the protruding plate portion 18 of the fixed connecting plate 9 attached to the top plate portion 2 side. The second shaft hole 9b is provided at a distant position, the first shaft hole 10a and the second shaft hole 10b are provided in the protruding plate portion 20 of the movable connecting plate 10, and the fixed connecting plate 9 side is located at a substantially equal distance from the leg portion 3. The first and second shaft holes 9a, 9b are provided at the same interval, and the pivot shaft 6 is inserted into the first shaft holes 9a, 10a or the second shaft holes 9b, 10b of the connecting plates 9, 10. In order to attach the pivot fittings 4 and 5 to the four places on the left and right ends of the top plate 2 and the front and rear ends, the fixed connection plate 9 and the movable connection of the pivot attachment 4 are provided. It is only necessary to manufacture four types of connection plates, that is, the plate 10 and the fixed connection plate 9 and the movable connection plate 10 of the pivot fitting 5.
[0022]
  That is, the work table 1 according to the embodiment shown in FIGS. 1 to 6 has a structure in which both leg pillars 7 and 7 of the leg portion 3 are arranged in a substantially C shape, and the movable connecting plate 10 of the pivot fitting. Is attached to the outer end surface 7a of each leg column 7 of the leg 3 arranged in a substantially C shape, and the protruding plate overlapping the protruding plate 18 of the fixed connecting plate 9 Since it consists of the part 20, and the inclined step part 21 which connects this protrusion board part 20 and the said attachment board part 19, it attaches to the pivot metal fitting 4 attached to the one end side of the top-plate part 2, and the other end side. Although the pivot fitting 5 is symmetrical in shape, it is not the same shape, so there are two types of connecting plates, the fixed connecting plate 9 and the movable connecting plate 10 of the pivot fitting 4 and the pivot fitting 5. There are four types including the fixed connection plate 9 and the movable connection plate 10.
[0023]
  As described above, since four types of connecting plates (metal components) can be manufactured as pivotal fittings to be attached to the left and right ends of the top plate 2 and the front and rear ends, eight types of connections are possible. Half of the conventional pivot fittings that required plates (bracket components) is required, so the initial mold investment cost for producing pivot fittings can be halved and the manufacturing cost of the folding worktable can be reduced. It becomes.
[0024]
  Further, when the folding work table 1 is assembled, a conventional pivot fitting that requires a small pivot fitting 14 having a small turning radius and a large pivot fitting 15 having a large turning radius as shown in FIGS. If there is, the small pivot metal fitting 14 is composed of a fixed connecting plate 14a and a movable connecting plate 14b, and the large pivot metal fitting 15 is composed of a fixed connecting plate 15a and a movable connecting plate 15b. Since they are different from each other, it is necessary to attach each of the pivot fittings 14 and 15 to the left and right ends of the top plate 2 and the respective leg portions 3 in a set, but the pivot fittings 4 and 5 according to the present invention are: Each protruding plate portion 18 and 20 is composed of a fixed connecting plate 9 and a movable connecting plate 10 having two shaft holes, a first shaft hole 9a and 10a and a second shaft hole 9b and 10b, In any of the pivot fittings 4 and 5, the pivot shaft 6 is connected to both connecting plates 9, If it is inserted into the first shaft holes 9a, 10a of 0, the leg part 3 can be folded so as to approach the top plate part 2, and if it is inserted through the second shaft holes 9b, 10b, the lower surface side of the top plate part 2 Since the required space portion S can be formed, the fixed connection plate 9 and the movable connection plate 10 of each of the pivot fittings 4 and 5 are separated and attached to the top plate portion 2 and the leg portion 3 when the work table 1 is assembled. Whether the pivot shaft 6 is inserted into the first shaft holes 9a and 10a or the second shaft holes 9b and 10b is appropriately selected at the time of final assembly of the workbench 1. The rationalization of the process is achieved, and the assembly work efficiency of the work table 1 can be improved.
[0025]
  The pivot fittings 4 and 5 of the embodiment described above are attached to the folding work table 1 in which both the pillars 7 and 7 of the leg portion 3 are arranged in a substantially C shape. FIG. 6B shows a folding work table 1 ′ in which the upper ends of the pair of leg posts 7, 7 are formed in parallel, and a pivot fitting 30 attached to the work table 1 ′ is shown in FIG. . The parallel parts on the upper end side of the pillars 7 and 7 are indicated by 7o and 7o in the figure. Similarly to the above-described pivot fittings 4 and 5, this pivot fitting 30 is also attached to the left and right ends of the top plate portion 2 and the front and rear ends thereof.
[0026]
  4 and 5, the pivot fitting 30 is similar to the pivot fittings 4 and 5, the fixed coupling plate 9 attached to the top plate portion 2 side, and the movable coupling plate 10 attached to the leg portion 3 side. The connecting plates 9 and 10 are each composed of a pivot shaft 6 that pivotally connects the projecting plate portions 18 and 20 that overlap each other, and the fixed connection plate 9 is also a top plate in the same manner as the pivot fittings 4 and 5. The mounting plate portion 17 is attached to the side end surface 2 a of the portion 2, and the protruding plate portion 18 protrudes from the mounting plate portion 17 in the same plane as the mounting plate portion 17. The pivot fitting 30 is different from the pivot fittings 4 and 5 in that the movable connecting plate 10 is attached to the upper end parallel portions 7o and 7o outer end surfaces of the respective leg posts 7 of the leg portion 3. And the protruding plate portion 20 that protrudes from the mounting plate portion 19 in the same plane, and overlaps with the protruding plate portion 18 of the movable connecting plate 10. In short, as shown in FIG. 6B, the pivot fitting 30 is that the entire movable connecting plate 10 is formed in a flat plate shape like the fixed connecting plate 9. About another point, it is the same as that of the pivot metal fittings 4 and 5.
[0027]
  According to such a pivot fitting 30, the fixed connecting plate 9 and the movable connecting plate 10 are both flat, so that they can be used in an inverted state. The same pivot fitting 30 can be used at four locations on both ends. Therefore, it is only necessary to manufacture two types of connection plates, the fixed connection plate 9 and the movable connection plate 10 of the pivot fitting 30, and the initial mold investment cost is further reduced than the pivot fittings 4 and 5. .
[0028]
  In the pivot fittings 4, 5, 30 of the embodiment described above, the first shaft holes 9 a, 10 a are required to be close to the top plate portion 2, and the second shaft holes 9 b, 10 b are farther than that. In FIG. 8, the first shaft holes 9a and 10a are located close to the leg 3, and the second shaft holes 9b and 10b are located farther from them. The pivot attachment metal fitting 40 by further another embodiment provided with the required opposing space | interval so that it may become is shown. That is, in this pivot fitting 40, the first shaft hole 9a is located at a position close to the leg portion 3 in the protruding plate portion 18 of the fixed connecting plate 9 where the mounting plate portion 17 is attached to the top plate portion 2 side. A second shaft hole 9b is provided at a position farther than that, and the protruding plate portion 20 of the movable connecting plate 10 to which the attachment plate portion 19 is attached to the leg portion 3 side is also located at a position close to the leg portion 3. A second shaft hole 10b is provided at a position farther from the shaft hole 10a, and the pivot shaft 6 is inserted through the first shaft holes 9a, 10a or the second shaft holes 9b, 10b of the connecting plates 9, 10. It is a thing.
[0029]
  FIG. 8A shows a state in which the leg portion 3 is opened by inserting the pivot shaft 6 into the first shaft holes 9 a and 10 a of both the connecting plates 9 and 10. Thus, when the leg part 3 is folded from the open leg state, the leg part 3 is in a state of approaching the top plate part 2 as shown in FIG. Further, when the pivot shaft 6 is inserted into the second shaft holes 9b and 10b of both the connecting plates 9 and 10, the leg portion 3 is folded, as shown in FIG. A space S that can accommodate the leg 3 on the side opposite to the leg 3 is formed on the lower surface side of the top 2 and the top 2 in a state in which the leg 3 on the opposite side is accommodated. It becomes parallel with.
[0030]
  In FIG. 9, the first shaft holes 9 a and 10 a are close to both the top plate 2 and the leg 3, and the second shaft holes 9 b and 10 b are both from the top plate 2 and the leg 3. The pivot fitting 50 by further another embodiment provided with the required opposing space | interval so that it may become a distant position is shown. That is, in this pivot fitting 50, the first shaft hole 9a is provided in the protruding plate portion 18 of the fixed connecting plate 9 to which the mounting plate portion 17 is attached to the top plate portion 2 side, and the top plate portion 2 and the leg portion 3 are provided. The second shaft hole 9b is provided at a position far from both the top plate portion 2 and the leg portion 3 and the attachment plate portion 19 is attached to the leg portion 3 side. The projecting plate portion 20 of the plate 10 is also provided with a first shaft hole 10 a at a position close to both the top plate portion 2 and the leg portion 3, and the second shaft hole 10 b is formed from either the top plate portion 2 or the leg portion 3. Also, the pivot shaft 6 is inserted into the first shaft holes 9a, 10a or the second shaft holes 9b, 10b of the connecting plates 9, 10 at a distant position.
[0031]
  FIG. 9A shows a state in which the leg 3 is opened by inserting the pivot shaft 6 into the first shaft holes 9a and 10a of the connecting plates 9 and 10, and this leg-opening state is shown. When the leg part 3 is folded, the leg part 3 is brought into a state of approaching the top plate part 2 as shown in FIG. When the holes 9b and 10b are inserted, the legs 3 are folded so that the legs 3 are opposed to the legs 3 on the lower surface side of the top plate 2 as shown in FIG. The space part S which can accommodate the leg part 3 to perform is formed, and it can be made parallel to the top board part 2 in the state which accommodated the leg part 3 on the opposite side.
[0032]
【The invention's effect】
  Claim 1According to the folding work according to any one of the inventions of ~ 3, it is used for itThe pivot fitting is composed of a fixed connecting plate, a movable connecting plate, and a pivot shaft that pivotally connects the protruding plate portions of both connecting plates. The first connecting hole and the first shaft hole are connected to the protruding plate portion of the fixed connecting plate. Two biaxial holes are provided at a required opposing interval, and the first and second axial holes are overlapped with the first and second axial holes on the fixed coupling plate side in the protruding plate portion of the movable coupling plate. When the pivot is inserted into the first shaft hole of both connecting plates, the leg portion can be folded close to the bottom surface of the top plate, and when the pivot shaft is inserted into the second shaft hole of both connecting plates, Since the leg can be folded to form a space for accommodating the leg facing the leg on the lower surface side of the top plate, a small pivot fitting with a small turning radius and a large with a large turning radius are provided. Compared to conventional pivot brackets that require pivot brackets, the number of bracket components is halved, greatly reducing the cost of mold production for pivot brackets. With wear, to be able to rationalize metal fabrication process, the folding work bench of manufacturing cost can be suppressed low, and also it is possible to facilitate the repair and maintenance of the pivot bracket.
[0033]
  In providing the first shaft hole and the second shaft hole in the projecting plate portion of the fixed connection plate and the movable connection plate in the pivot fitting of the present invention,1The first shaft hole is provided at a position close to the top plate portion, and the second shaft hole is provided at a position far from the first shaft hole as described in 1.Is a thingOr claims2As described in the above, the first shaft hole is provided at a position close to the leg portion, and the second shaft hole is provided with a required facing distance so as to be a position farther than that.Is a thingOrAlsoAs described in claim 3, the first shaft hole is required to be close to both the top plate portion and the leg portion, and the second shaft hole is required to be far from both the top plate portion and the leg portion. It shall be provided with a facing interval.
[0034]
  Claim4As in the invention according to the present invention, the fixed connecting plate includes a mounting plate portion that is attached to the side end surface of the top plate portion, and a protruding plate portion that protrudes from the mounting plate portion in the same plane, and is movable. The connecting plate is attached to the outer end face of each leg column of the pair of leg columns arranged in a substantially C-shaped wide end, and the protruding plate portion of the fixed connecting plate is overlapped with the connecting plate plate According to the pivot metal fitting comprising the projecting plate portion and the inclined step portion connecting the projecting plate portion and the mounting plate portion, the left and right ends of the top plate portion and the front and rear ends thereof Since the same bracket can be used for the left end front part and the right end rear part of the top plate part, and the right end part front part and the left end rear part of the top plate part, respectively, there are four types of attachments. A connecting plate is sufficient.
[0035]
  Claim5As in the invention according to the above, the fixed connecting plate is composed of an attaching plate portion attached to the side end surface of the top plate portion, and a protruding plate portion protruding along the same plane from the attaching plate portion, A movable connecting plate is attached to the outer end surface of the upper end parallel portion of each of the pair of leg columns of the leg portions at least arranged in parallel at the upper end portion, and from the attachment plate portion According to the one that protrudes in the same plane and consists of the protruding plate part of the fixed connecting plate and the protruding plate part that overlaps, the fixed connecting plate and the movable connecting plate are both flat, so it can be used in an inverted state Thus, the same pivotal fitting can be used at four locations on both the left and right ends of the top plate and both the front and rear ends. For this reason, there are two types of fixed coupling plates and movable coupling plates. What is necessary is just to manufacture a connection board, a metal mold production cost can be reduced significantly, and the manufacturing cost of a folding worktable can be made still cheaper.
[Brief description of the drawings]
FIG. 1 is a front view showing a folding workbench manufactured using a pivot fitting according to an embodiment of the present invention in an open leg state.
FIG. 2 is a side view of the work table shown in FIG.
FIG. 3 is a front view showing the work platform in a closed leg state.
FIG. 4 is a partially enlarged detail view of FIG. 1;
FIG. 5 is a partially enlarged detail view of FIG. 3;
6A is a cross-sectional view taken along the line XX of FIG. 4, and FIG. 6B is a partially enlarged cross-sectional view of the folding workbench shown in FIG. 7 and is a cross-sectional view similar to FIG. .
7 is a side view similar to FIG. 2 showing a work table in which the upper end portions of a pair of pedestals on both sides of a leg portion are formed in parallel. FIG.
FIG. 8 is an explanatory view showing a usage state of a pivot fitting according to another embodiment of the present invention.
FIG. 9 is an explanatory view showing a usage state of a pivot fitting according to still another embodiment of the present invention.
FIG. 10 is a front view showing a conventional folding work table in an open leg state.
FIG. 11 is a side view of the workbench shown in FIG.
FIG. 12 is a front view showing the conventional work bench in a closed leg state.
13A is a partially enlarged detail view of FIG. 8, and FIG. 13B is an enlarged detail view of FIG.
[Explanation of symbols]
  1,1 'work table
  2 Top plate
  3 legs
  4 Pivot fitting according to the present invention
  5 Pivot fitting according to the present invention
  6 pivots
  7 Leg pillars
  7o Parallel part at the upper end of the pillar
  9 Fixed connecting plate
  9a, 10a 1st shaft hole
  9b, 10b Second shaft hole
  10 Movable connecting plate
  17 Mounting plate
  18 Protruding plate
  19 Mounting plate
  20 Projection plate
  21 Inclined step
  40 Pivot fitting according to the present invention
  50 Pivot fitting according to the present invention

Claims

Pivot bracket for pivotally openably of left and right end portion side of the worktable of the top plate, respectively leg, in the open leg standing state toward the閉脚state and downward folded top plate lower surface Is a folding work table provided at both ends of the work table top plate part, and the pivot fitting is a fixed connection plate attached to the top plate part side, a movable connection plate attached to the leg part side, and both connection plates And a pivot shaft for pivotally connecting the projecting plate portions overlapping each other. The projecting plate portion of the fixed connecting plate has a first shaft hole at a position close to the top plate portion and a first shaft hole at a position far from the top plate portion. 2 shaft hole with a predetermined opposing spacing provided respectively with the first and second both axial hole of the projecting plate portion of the movable connecting plate fixed connecting plate side first shaft hole and the second shaft hole provided in the same interval to polymerization, among pivotal metal fitting Thus provided at both ends of the worktable top plate, each other two joining plates pivot bracket one end One pivot shaft is inserted through the first shaft hole of the overlapping projecting plate portion, and the other pivot shaft is inserted into the second shaft hole of the projecting plate portion overlapping each other of the connecting plates of the pivot fittings at the other end portion. Folding work table that is inserted .

Pivot bracket for pivotally openably of left and right end portion side of the worktable of the top plate, respectively leg, in the open leg standing state toward the閉脚state and downward folded top plate lower surface Is a folding work table provided at both ends of the work table top plate part, and the pivot fitting is a fixed connection plate attached to the top plate part side, a movable connection plate attached to the leg part side, and both connection plates And a pivot shaft for pivotally connecting the protruding plate portions overlapping each other, the protruding plate portion of the fixed connecting plate having a first shaft hole at a position close to the leg portion and a second shaft at a position far from the leg portion. respectively provided with pores having a required opposing distance, the projecting plate portion of the movable connecting plate polymerizing the first shaft hole and the first and second both axial hole of the second shaft hole of the fixed connecting plate side Yo provided in the same interval, among the pivotal metal fitting Thus provided at both ends of the worktable top plate, each other heavy of the two joining plates pivot bracket one end One pivot shaft is inserted into the first shaft hole of the projecting plate portion to be inserted, and the other pivot shaft is inserted into the second shaft hole of the projecting plate portion which is overlapped with each other of the connecting plates of the pivot fittings at the other end portion. Folding work table .

Pivot bracket for pivotally openably of left and right end portion side of the worktable of the top plate, respectively leg, in the open leg standing state toward the閉脚state and downward folded top plate lower surface Is a folding work table provided at both ends of the work table top plate part, and the pivot fitting is a fixed connection plate attached to the top plate part side, a movable connection plate attached to the leg part side, and both connection plates A pivot shaft that pivotally connects the protruding plate portions that overlap each other, and the protruding plate portion of the fixed connecting plate has a first shaft hole at a position close to both the top plate portion and the leg portion. parts and have the required opposite interval second shaft hole at a position farther from any of the leg portion is provided respectively on the projecting plate portion of the movable connecting plate fixed connecting plate side first shaft hole and the second shaft hole wherein provided in the same interval so as to polymerize with both the first and second axial hole of, among pivotal metal fitting Thus provided at both ends of the worktable top plate, or A protruding plate portion in which one pivot shaft is inserted into the first shaft hole of the protruding plate portion overlapping each other of both connecting plates of the end fitting member, and both connecting plates of the other end connecting member are overlapped. A folding workbench in which the other pivot shaft is inserted into the second shaft hole .

The fixed connecting plate of the pivot fitting is composed of an attachment plate portion that is attached to the side end surface of the top plate portion, and a protruding plate portion that projects from the attachment plate portion in the same plane as the pivot plate . The movable connecting plate includes a mounting plate portion that is attached to the outer end surface of each of the pair of leg columns on both sides of the leg portion that is disposed in a substantially C-shaped shape, and a protruding plate portion of the fixed connecting plate. The folding workbench according to any one of claims 1 to 3, comprising: a protruding plate portion that overlaps with the protruding plate portion; and an inclined step portion that connects the protruding plate portion and the attachment plate portion .

Fixing the connecting plate of the pivot fitting is composed of a securing plate which is attached to the side end surface of the top plate portion, a projecting plate portion that projects along the same plane therewith from attachment plate portion, the pivot bracket The movable connecting plate includes at least an attachment plate portion attached to an outer end surface of the upper end parallel portion of each of the pair of leg posts on both sides of the leg portion having the upper end portions arranged in parallel, and an attachment plate portion. The folding workbench according to any one of claims 1 to 3, wherein the folding work table includes a protruding plate portion that protrudes in the same plane as this, and a protruding plate portion that overlaps with the protruding plate portion of the fixed connecting plate .