JP3643466B2

JP3643466B2 - Concrete formwork spacing holder

Info

Publication number: JP3643466B2
Application number: JP15889897A
Authority: JP
Inventors: 竜二奥川; 安史松本; 勝重真鍋; 捷也鈴木
Original assignee: Sekisui House Ltd
Current assignee: Sekisui House Ltd
Priority date: 1997-06-16
Filing date: 1997-06-16
Publication date: 2005-04-27
Anticipated expiration: 2017-06-16
Also published as: JPH116290A

Description

【０００１】
【発明の属する技術分野】
この発明は、建築物の布基礎コンクリートなどを形成するためのコンクリート型枠の間隔保持具に関するものである。
【０００２】
【従来の技術】
従来、高さの高いコンクリート壁等の構造物を形成する場合には、複数のコンクリート型枠を長手方向に連結するとともに、高さ方向に積み上げた状態で、内側及び外側に所定間隔をおいて対向配置していた。また、コンクリート構造物のコーナ部の形成箇所においては、コンクリート型枠及びコーナ用型枠を横方向に連結するとともに、高さ方向に積み上げた状態で、内側及び外側に所定間隔をおいて対向配置していた。
【０００３】
この場合、最上部に位置する内外側のコンクリート型枠の上端部間、及び最下部に位置する内外側のコンクリート型枠の下端部間には、型枠間の間隔を保持するための端部間隔保持具を配設していた。同様に、最上部に位置する内外側のコーナ用型枠の上端部間、及び最下部に位置する内外側のコーナ用型枠の下端部間にも、型枠間の間隔を保持するための端部間隔保持具を配設していた。
【０００４】
また、積み上げ状態の上下コンクリート型枠の接合部において、内外側のコンクリート型枠間には、型枠間の間隔を保持するための中間部間隔保持具を配設していた。同様に、積み上げ状態の上下コーナ用型枠の接合部において、内外側のコーナ用型枠間にも、型枠間の間隔を保持するための中間部間隔保持具を配設していた。
【０００５】
一方、この種の高さの大きなコンクリート壁等の構造物の形成に際して、その構造物の外表面に石目模様等の凹凸模様を付与する必要がある場合には、表面に凹凸状の模様形成面を有する模様板を使用していた。すなわち、複数のコンクリート型枠及びコーナ用型枠を横方向に連結するとともに、高さ方向に積み上げた状態で、内側及び外側に所定間隔をおいて対向配置した後、外側のコンクリート型枠及びコーナ用型枠の内面に沿って模様板を立設配置していた。
【０００６】
【発明が解決しようとする課題】
ところが、前記のように高さの高いコンクリート壁等の構造物の形成に際して、外側のコンクリート型枠及びコーナ要型枠の内面に沿って模様板を立設配置した場合には、従来構成の中間部間隔保持具を配設することができないという問題があった。すなわち、積み上げ状態の上下コンクリート型枠の接合部及び上下コーナ用型枠の接合部には、模様板が隣接配置されている。そのため、これらの模様板が邪魔になって、内外側のコンクリート型枠間及びコーナ用型枠間に、中間部間隔保持具を装着することが困難である。
【０００７】
この発明は、このような従来の技術に存在する問題点に着目してなされたものである。その目的とするところは、高さの高いコンクリート壁等の構造物のコーナ部の形成に際して、外側のコンクリート型枠及びコーナ用型枠の内面に沿って模様板を立設配置した場合でも、その模様板が邪魔になることなく、積み上げ状態の上下コーナ用型枠の接合部において、内外側のコーナ用型枠間に容易に装着して使用することができるコンクリート型枠の間隔保持具を提供することにある。
【０００８】
【課題を解決するための手段】
上記の目的を達成するために、請求項１に記載の発明では、コンクリート型枠及びコーナ用型枠を横方向に連結するとともに、高さ方向に積み上げた状態で、内側及び外側に所定間隔をおいて対向配置し、外側のコンクリート型枠及びコーナ用型枠の内面に沿って模様板を立設配置し、積み上げ状態の上下コーナ用型枠の接合部にて、内外側のコーナ用型枠間の間隔を保持するコンクリート型枠の間隔保持具において、互いに係脱可能な第１保持具と第２保持具とを備え、第１保持具本体の一端には、内側の下コーナ用型枠の隅角部に係合可能な内側規制部材を固定し、第１保持具本体の他端には、模様板上の挿通孔を介して外側の上下コーナ用型枠の一側部間に挿入可能な第１挿入部材と、模様板の内面に接合可能な円錐台形状の第１接合部材とを着脱可能に取り付け、第１挿入部材の先端には、外側の上下コーナ用型枠の一側部外側縁に係合可能な第１外側規制部材を着脱可能に取り付け、第２保持具本体の一端には、第１保持具本体の中間部に係合可能な係止フックを形成し、第２保持具本体の他端には、模様板上の挿通孔を介して外側の上下コーナ用型枠の他側部間に挿入可能な第２挿入部材と、模様板の内面に接合可能な円錐台形状の第２接合部材とを着脱可能に取り付け、第２挿入部材の先端には、外側の上下コーナ用型枠の他側部外側縁に係合可能な第２外側規制部材を着脱可能に取り付けたものである。
【０００９】
請求項２に記載の発明では、請求項１に記載のコンクリート型枠の間隔保持具において、前記第１保持具の中間部に第２保持具の係止フックを係合させた状態で、内側規制部材と第１挿入部材と第２挿入部材とがほぼ同一平面上に配置されるようにしたものである。
【００１０】
請求項３に記載の発明では、請求項１または請求項２に記載のコンクリート型枠の間隔保持具において、前記第１保持具の内側規制部材には幅狭部を形成し、その幅狭部上には内側規制部材の先端を折取るための折取り部を設けたものである。
【００１１】
請求項４に記載の発明では、請求項１ないし請求項３のいずれかに記載のコンクリート型枠の間隔保持具において、前記第１保持具の内側規制部材には、内側の上下コーナ用型枠の内で、少なくとも上コーナ用型枠に結合可能な結合部を設けたものである。
【００１２】
請求項５に記載の発明では、請求項１ないし請求項４のいずれかに記載のコンクリート型枠の間隔保持具において、前記第１保持具本体を金属棒により形成するとともに、内側規制部材を金属板により形成し、内側規制部材上の嵌合溝に第１保持具本体の一端を嵌合した状態で、内側規制部材を第１保持具本体に溶接固定したものである。
【００１３】
【発明の実施の形態】
以下に、この発明の一実施形態を、図面に基づいて詳細に説明する。
図１に示すように、コンクリート型枠１１は所定厚さの横長四角板状に形成され、その外面の一側縁には複数の連結ピン１２が所定間隔をおいて配設されている。そして、高さの高いコンクリート壁等の構造物を形成する場合には、このコンクリート型枠１１が連結ピン１２により長手方向に複数個連結されるとともに、高さ方向に複数段積み上げられた状態で、内側及び外側に所定間隔をおいて対向配置される。
【００１４】
内側コーナ用型枠１３及び外側コーナ用型枠１４は平面形ほぼＬ字状に形成され、それらの外面の一側縁には複数の連結ピン１５が所定間隔をおいて配設されている。そして、高さの高いコンクリート構造物のコーナ部の形成箇所において、この内外側のコーナ用型枠１３，１４が連結ピン１２，１５により、前記コンクリート型枠１１と横方向に連結されるとともに、高さ方向に複数段積み上げられた状態で、内側及び外側に所定間隔をおいて対向配置される。
【００１５】
模様板１６は合成樹脂により平板状に形成され、その上端には折曲部１６ａが形成されるとともに、表面には凹凸状の模様形成面１６ｂが設けられている。そして、コンクリート壁等の構造物の外表面に、岩石状の凹凸模様を付与する場合には、外側のコンクリート型枠１１及びコーナ用型枠１４の上端縁に模様板１６の折曲部１６ａを係止することにより、模様板１６がそれらのコンクリート型枠１１及びコーナ用型枠１４の内面に沿って、高さ方向の全長に亘って立設配置される。
【００１６】
連結具１７は金属板により側面ほぼＨ字状に形成されている。そして、図１及び図４に示すように、外側のコンクリート型枠１１及びコーナ用型枠１４を高さ方向に積み上げる際に、各一対の連結具１７が上下のコンクリート型枠１１間及びコーナ用型枠１４間の両側部にそれぞれ介装される。これにより、上下のコンクリート型枠１１及びコーナ用型枠１４が内側及び外側へ位置ずれしないように連結されるとともに、上下のコンクリート型枠１１間及びコーナ用型枠１４間の接合部に所定の隙間１８が形成される。
【００１７】
横長スリット状の挿通孔１９は前記上下の外側コーナ用型枠１４間の隙間１８と対応するように、模様板１６の中間部に形成されている。コーナ用の中間部間隔保持具２０は積み上げ状態にある上下コーナ用型枠１３，１４の接合部において、内外側のコーナ用型枠１３，１４間に模様板１６の挿通孔１９を介して装着される。そして、この間隔保持具２０によって、内外側のコーナ用型枠１３，１４の中間部が所定間隔に保持されるようになっている。
【００１８】
なお、積み上げ状態の最上部に位置する内外側のコーナ用型枠１３，１４の上端部間、及び最下部に位置する内外側のコーナ用型枠１３，１４の下端部間には、図示しないコーナ用の端部間隔保持具が装着されている。そして、これらの端部間隔保持具によって、内外側のコーナ用型枠１３，１４の上端部及び下端部が所定間隔に保持されるようになっている。
【００１９】
また、積み上げ状態にある内外側のコンクリート型枠１１の上端部間、中間部間及び下端部間には、図示しない別構成の間隔保持具がそれぞれ装着されている。そして、これらの間隔保持具によって、内外側のコンクリート型枠１１の上端部、中間部及び下端部が所定間隔に保持されるようになっている。
【００２０】
図２〜図５に示すように、前記間隔保持具２０は、第１保持具２１と第２保持具２２とから構成されている。第１保持具２１は、第１保持具本体２５と、その第１保持具本体２５の一端に固定された内側規制部材２６とを備えている。さらに、第１保持具２１は、第１保持具本体２５の他端に着脱可能に取り付けられた第１接合部材２７と、その第１接合部材２７の外側に突設された第１挿入部材２８と、その第１挿入部材２８の先端に着脱可能に取り付けられる第１外側規制部材２９とを備えている。
【００２１】
一方、前記第２保持具２２は、第２保持具本体３０と、その第２保持具本体の一端に折曲形成された係止フック３１とを備えている。さらに、第２保持具２２は、第２保持具本体３０の他端に着脱可能に取り付けられた第２接合部材３２と、その第２接合部材３２の外側に突設された第２挿入部材３３と、その第２挿入部材３３の先端に着脱可能に取り付けられる第２外側規制部材３４とを備えている。
【００２２】
前記第１保持具本体２５は金属棒により形成され、その端部にはネジ部２５ａが形成されるとともに、中間部にはほぼ１２０度の角度で折曲する折曲部２５ｂが形成されている。第２保持具本体３０は金属棒により形成され、その端部にはネジ部３０ａが形成されている。そして、図３に示すように、第２保持具本体３０の係止フック３１が第１保持具本体２５の折曲部２５ｂに離脱可能に係合され、この係合状態で内側規制部材２６と第１挿入部材２８と第２挿入部材３３とが、ほぼ同一平面上に配置されるようになっている。
【００２３】
前記内側規制部材２６は金属板により形成され、その先端下面には下部に位置する内側コーナ用型枠１３の隅角部の内外両側縁と係合可能な一対の規制片２６ａが突設されている。幅狭部３５は内側規制部材２６の中央部に形成され、この幅狭部３５上には薄肉状の折取り部３６が幅方向に延長形成されている。
【００２４】
凹状の嵌合溝３７は内側規制部材２６の基端上面の中央に長手方向へ延長形成されている。そして、この嵌合溝３７に第１保持具本体２５のネジ部２５ａと反対側の端部を嵌合させた状態で、内側規制部材２６が第１保持具本体２５に溶接固定されている。
【００２５】
結合部としての結合孔３８は前記内側規制部材２６上に形成されている。そして、図３及び図４に示すように、内側規制部材２６が積み上げ状態の上下内側コーナ用型枠１３間に配置された状態で、この結合孔３８及び上下内側コーナ用型枠１３上の挿通孔３９に結合ピン４０が挿通される。これにより、上下内側コーナ用型枠１３が内側規制部材２６に結合されて位置規制される。
【００２６】
前記第１及び第２の接合部材２７，３２は合成樹脂により、外側に向かって次第に拡径した円錐台形状に形成され、それらの内側中央にはネジ孔２７ａ，３２ａが形成されるとともに、外側中央にはボス部２７ｂ，３２ｂが形成されている。そして、これらのネジ孔２７ａ，３２ａを第１及び第２の保持具本体２５，３０のネジ部２５ａ，３０ａに螺合することにより、第１及び第２の接合部材２７，３２が第１及び第２の保持具本体２５，３０に着脱可能に取り付けられている。また、図３及び図４に示すように、間隔保持具２０を内外側のコーナ用型枠１３，１４間に装着する際には、これらの接合部材２７，３２が模様板１６の内面に接合されるようになっている。
【００２７】
前記第１及び第２の挿入部材２８，３３は金属板により形成され、それらの基端にはローレット軸４１が突設されるとともに、先端にはスリット４２が長手方向に延長形成されている。そして、ローレット軸４１を第１及び第２の接合部材２７，３２のボス部２７ｂ，３２ｂに圧入およびかしめることにより、第１及び第２の挿入部材２８，３３が第１及び第２の接合部材２７，３２の外側面に突出固定されている。
【００２８】
また、図２に示すように、前記第１及び第２の挿入部材２８，３３の幅Ｗ１は、第１及び第２の接合部材２７，３２の最大径部の外径Ｄ１よりも小さくなるように設定されている。そして、図３及び図４に示すように、間隔保持具２０を内外側のコーナ用型枠１３，１４間に装着する際には、第１挿入部材２８が模様板１６上の挿通孔１９を介して、上下の外側コーナ用型枠１４の一側部１４ａ間の隙間１８に挿入される。また、第２挿入部材３３が模様板１６上の挿通孔１９を介して、上下の外側コーナ用型枠１４の他側部１４ｂ間の隙間１８に挿入されるようになっている。
【００２９】
前記第１及び第２の外側規制部材２９，３４は金属板製の楔部材から構成されている。そして、図３及び図４に示すように、間隔保持具２０を内外側のコーナ用型枠１３，１４間に装着する際には、第１外側規制部材２９を第１挿入部材２８上のスリット４２に嵌入することにより、その第１外側規制部材２９が上下の外側コーナ用型枠１４の一側部１４ａの外側縁に係合する。また、第２外側規制部材３４を第２挿入部材３３上のスリット４２に嵌入することにより、その第２外側規制部材３４が上下の外側コーナ用型枠１４の他側部１４ｂの外側縁に係合するようになっている。
【００３０】
次に、前記のように構成されたコンクリート型枠の間隔保持具の作用を説明する。
さて、高さの高いコンクリート壁等の構造物のコーナ部を形成する場合には、図１に示すように、コンクリート型枠１１及びコーナ用型枠１３，１４を連結ピン１２，１５により横方向に連結するとともに、高さ方向に複数段積み上げた状態で、所定間隔をおいて対向配置する。また、構造物の外表面に石目模様等の凹凸模様を付与する場合には、外側のコンクリート型枠１１及びコーナ用型枠１４の内面に沿って、模様板１６を立設配置する。
【００３１】
この場合、コーナ部においては、下部の内外側のコーナ用型枠１３，１４を対向配置した状態で、外側コーナ用型枠１４上に一対の連結具１７を配設した後、その上部に外側コーナ用型枠１４を積み上げる。これにより、上下の外側コーナ用型枠１４間の接合部には所定の隙間１８が形成される。そして、この状態で模様板１６を上下の外側コーナ用型枠１４の内面に沿って立設配置する。
【００３２】
次に、間隔保持具２０の第１保持具２１と第２保持具２２とを分離した状態で、第１保持具２１の第１挿入部材２８を、模様板１６上の挿通孔１９を介して、上下の外側コーナ用型枠１４の一側部１４ａ間の隙間１８に挿入する。これとともに、第１保持具２１の内側規制部材２６を、下部の内側コーナ用型枠１３の隅角部上に載置する。すると、一対の規制片２６ａが下部の内側コーナ用型枠１３の隅角部の内外両側縁と係合するとともに、第１保持具２１の第１接合部材２７が模様板１６の内面に接合される。
【００３３】
さらに、第２保持具２２の第２挿入部材３３を、模様板１６上の挿通孔１９を介して、上下の外側コーナ用型枠１４の他側部１４ｂ間の隙間１８に挿入する。これとともに、第２保持具２２の係止フック３１を、第１保持具２１の中間の折曲部２５ｂに係合させる。すると、第２保持具２２の第２接合部材３２が模様板１６の内面に接合される。
【００３４】
この状態で、下部の内側コーナ用型枠１３上に上部の内側コーナ用型枠１３を積み上げる。そして、上下の内側コーナ用型枠１３上の挿通孔３９及び内側規制部材２６上の結合孔３８に結合ピン４０を挿通する。すると、結合ピン４０を介して内側規制部材２６が両内側コーナ用型枠１３に結合されるとともに、内側規制部材２６の規制片２６ａが下部コーナ用型枠１３の隅角部の内外両側縁に係合されて、それらの内側コーナ用型枠１３の位置が規制される。
【００３５】
その後、第１保持具２１の第１挿入部材２８上のスリット４２に第１外側規制部材２９を嵌入すると、その第１外側規制部材２９が上下の外側コーナ用型枠１４の一側部１４ａの外側縁に係合される。また、第２保持具２２の第２挿入部材３３上のスリット４２に第２外側規制部材３４を嵌入すると、その第２外側規制部材３４が上下の外側コーナ用型枠１４の他側部１４ｂの外側縁に係合される。そして、この第１及び第２の外側規制部材２９，３４と第１及び第２の接合部材２７，３２との間で、外側コーナ用型枠１４の両側部１４ａ，１４ｂの位置が規制される。
【００３６】
この状態で、コンクリート型枠１１及びコーナ用型枠１３，１４間にコンクリートを打設すると、高さの高いコンクリート壁等の構造物が形成される。また、模様板１６の模様形成面１６ｂにより、構造物の外表面に岩石状の凹凸模様が転写される。そして、このコンクリート構造物のコーナ部内には、間隔保持具２０の第１保持具本体２５及び第２保持具本体３０を含む中間部分が埋設される。
【００３７】
一方、コンクリート構造物の形成後に、コーナ部においてコーナ用型枠１３，１４を離型する場合には、まず結合ピン４０を結合孔３８及び挿通孔３９から抜き取り、上部の内側コーナ用型枠１３を取り外す。この状態で、第１保持具２１の内側規制部材２６を折取り部３６において折取って、コンクリート構造物上からの内側規制部材２６の突出部分を除去する。その後、下部の内側コーナ用型枠１３を取り外す。
【００３８】
次に、第１保持具２１の第１外側規制部材２９を第１挿入部材２８のスリット４２から抜き取るとともに、第２保持具２２の第２外側規制部材３４を第２挿入部材３３のスリット４２から抜き取る。この状態で、上部及び下部の外側コーナ用型枠１４をそれぞれ取り外すとともに、模様板１６をコンクリート構造物の表面から離型する。
【００３９】
その後、第１保持具２１の第１挿入部材２８及び第１接合部材２７を回転させて、第１接合部材２７のネジ孔２７ａを第１保持具本体２５のネジ部２５ａから螺退させ、第１挿入部材２８及び第１接合部材２７を第１保持具本体２５の端部から取り外す。同様に、第２保持具２２の第２挿入部材３３及び第２接合部材３２を回転させて、第２接合部材３２のネジ孔３２ａを第２保持具本体３０のネジ部３０ａから螺退させ、第２挿入部材３３及び第２接合部材３２を第２保持具本体３０の端部から取り外す。
【００４０】
そして、この第１及び第２の接合部材２７，３２の取り外しにより、コンクリート構造物の外表面に形成された凹所にモルタルを充填して、コンクリート構造物の表面を補修すれば、コンクリート構造物の形成作業が完了する。
【００４１】
前記の実施形態によって発揮される効果について、以下に記載する。
・この実施形態のコンクリート型枠の間隔保持具においては、互いに係脱可能な第１保持具２１と第２保持具２２とが装備されている。そして、第１保持具本体２５の一端には、内側の下コーナ用型枠１３の隅角部に係合可能な内側規制部材２６が固定されたいる。また、第１保持具本体２５の他端には、模様板１６上の挿通孔１９を介して外側の上下コーナ用型枠１４の一側部１４ａ間に挿入可能な第１挿入部材２８と、模様板１６の内面に接合可能な円錐台形状の第１接合部材２７とが着脱可能に取り付けられている。さらに、第１挿入部材２８の先端には、外側の上下コーナ用型枠１４の一側部外側縁に係合可能な第１外側規制部材２９が着脱可能に取り付けられている。
【００４２】
一方、第２保持具本体３０の一端には、第１保持具本体２５の中間部に係合可能な係止フック３１が形成されている。また、第２保持具本体３０の他端には、模様板１６上の挿通孔１９を介して外側の上下コーナ用型枠１４の他側部１４ｂ間に挿入可能な第２挿入部材３３と、模様板１６の内面に接合可能な円錐台形状の第２接合部材３２とが着脱可能に取り付けられている。さらに、第２挿入部材３２の先端には、外側の上下コーナ用型枠１４の他側部外側縁に係合可能な第２外側規制部材３４が着脱可能に取り付けられている。
【００４３】
このため、高さの高いコンクリート壁等の構造物のコーナ部の形成に際して、外側のコンクリート型枠１１及びコーナ用型枠１４の内面に沿って模様板１６を立設配置した場合でも、その模様板１６が邪魔になることなく、積み上げ状態の上下コーナ用型枠１３，１４の接合部において、内外側のコーナ用型枠１３，１４間にコーナ用の間隔保持具２０を容易に装着することができる。
・この実施形態のコンクリート型枠の間隔保持具においては、第１保持具２１の中間部に第２保持具２２の係止フック３１を係合させた状態で、内側規制部材２６と第１挿入部材２８と第２挿入部材３３とがほぼ同一平面上に配置されるようになっている。
【００４４】
このため、間隔保持具２０を内外側のコーナ用型枠１３，１４間に、ぐらつき等を生じることなく安定状態で架設配置することができる。
・この実施形態のコンクリート型枠の間隔保持具においては、第１保持具２１の内側規制部材２６に幅狭部３５が形成され、その幅狭部３５上には内側規制部材２６の先端を折取るための折取り部３６が設けられている。
【００４５】
このため、コンクリート構造物の形成後に、その構造物から突出した内側規制部材２６の先端を、幅狭部３５の折取り部３６において、容易に折取り除去することができる。
・この実施形態のコンクリート型枠の間隔保持具においては、第１保持具２１の内側規制部材２６に、内側の上下コーナ用型枠１３の内で、少なくとも上コーナ用型枠１３に対し、結合ピン４０等を介して結合可能な結合部としての結合孔３８が設けられている。
【００４６】
このため、内側規制部材２６によって、内側の上下コーナ用型枠１３を所定位置に確実に規制保持することができる。
・この実施形態のコンクリート型枠の間隔保持具においては、第１保持具本体２５が金属棒により形成されるとともに、内側規制部材２６が金属板により形成されている。そして、内側規制部材２６上の嵌合溝３７に第１保持具本体２５の一端を嵌合した状態で、内側規制部材２６が第１保持具本体２５に溶接固定されている。
【００４７】
このため、第１保持具２１の構造が簡単であるとともに、所定の強度を確保することができ、しかも、第１保持具本体２５と内側規制部材２６とを所定位置に正確に位置決めして、捩じれ等が生じることなく確実に固定することができる。・この実施形態のコンクリート型枠の間隔保持具においては、第１及び第２の挿入部材２８，３３の幅Ｗ１が第１及び第２の接合部材２７，３２の外径Ｄ１よりも小さくなるように設定されている。
【００４８】
このため、模様板１６上に第１及び第２の挿入部材２８，３３を挿通するための大きな挿通孔１９を形成する必要がなくて、構造物の表面上で模様が欠損する部分を少なくすることができる。
・この実施形態のコンクリート型枠の間隔保持具においては、第１及び第２の外側規制部材２９，３４が、第１及び第２の挿入部材２８，３３上のスリット４２に着脱可能な楔部材から構成されている。
【００４９】
このため、第１及び第２の挿入部材２８，３３上のスリット４２に楔部材よりなる第１及び第２の外側規制部材２９，３４を打ち込むという簡単な操作により、外側のコーナ用型枠１４の両側部１４ａ，１４ｂを確実に位置規制することができる。
・この実施形態のコンクリート型枠の間隔保持具においては、第１及び第２の接合部材２７，３２が合成樹脂により形成されている。このため、模様板１６に対する第１及び第２の接合部材２７，３２の接合により、模様板１６の表面が傷付くおそれを防止することができる。
【００５０】
次に、間隔保持具２０の位置決め構成の別の実施形態を図６に基づいて説明する。
さて、この実施形態においては、第１保持具２１の内側規制部材２６の上下両面に、結合部としての結合ピン４３が突出固定されている。そして、この結合ピン４３を上部及び下部の内側コーナ用型枠１３の挿通孔３９に挿通することにより、内側規制部材２６が上下両内側コーナ用型枠１３に結合されて、それらの内側コーナ用型枠１３の位置が規制されるようになっている。この実施形態では、上部及び下部の内側コーナ用型枠１３の挿通孔３９に結合ピン４３を挿通することにより間隔保持具２０の一端が規制されることから、前記一対の規制片２６ａは不要である。
【００５１】
従って、この別の実施形態においても、前述した実施形態と同様の作用効果を発揮させることができる。
なお、この発明は、次のように変更して具体化することも可能である。
【００５２】
・第１及び第２の保持具本体２５，３０、内側規制部材２６、第１及び第２の接合部材２７，３２、第１及び第２の挿入部材２８，３３、第１及び第２の外側規制部材２９，３４を、全て同一の金属材料で構成したり、接合部材２７，３２のみをアルミニウムで構成したりすること。
【００５３】
このように構成した場合、間隔保持具２０の構成を簡易にしたり、所要の強度を保持することができる。
・第１保持具本体２５に対する内側規制部材２６の規制片２６ａを内側コーナ用型枠１３の隅角部の内外両側縁に対応するように折曲げ形成すること。
【００５４】
このように構成した場合、間隔保持具２０をより安定した状態で位置決め固定することができる。
・第１保持具本体２５に対する第１接合部材２７及び第１挿入部材２８の着脱構造、並びに第２保持具本体３０に対する第２接合部材３２及び第２挿入部材３３の着脱構造として、連結ピンを使用したりして適宜に変更して構成すること。
【００５５】
・前記図１から図５に示した実施形態において、内側規制部材２６の結合孔３８を省略すること。
このように構成した場合でも、内側規制部材２６の規制片２６ａを下部の内側コーナ用型枠１３の隅角部の内外両側縁に係合させることができ、間隔保持具２０の一端を位置規制することができる。
【００５６】
・前記図１から図５に示した実施形態において、内側規制部材２６の規制片２６ａを省略すること。
このように構成した場合、上下の内側コーナ用型枠１３上の挿通孔３９及び内側規制部材２６上の結合孔３８に結合ピン４０を挿通することにより、内側規制部材２６を上下の内側コーナ用型枠１３に位置決め固定することができる。
【００５７】
さらに、前記実施形態より把握される技術的思想について以下に記載する。
・前記第１および第２保持具本体の端部に雄ネジを形成するとともに、第１および第２接合部材に第１および第２保持具本体の雄ネジがそれぞれ螺合される雌ネジ孔を形成した請求項５に記載のコンクリート型枠の間隔保持具。
【００５８】
このように構成した場合、第１および第２保持具本体をそれぞれ第１および第２接合部材に容易かつ確実に一体化することができる。
・前記第１および第２挿入部材の基端をローレット軸とし、各ローレット軸をそれぞれ第１および第２接合部材に圧入およびかしめた請求項１ないし請求項５のいずれかに記載のコンクリート型枠の間隔保持具。
【００５９】
このように構成した場合、第１および第２接合部材に対して第１および第２挿入部材をそれぞれ回転することなく、確実に固着させることができる。
【００６０】
【発明の効果】
この発明は、以上のように構成されているため、次のような効果を奏する。
請求項１に記載の発明によれば、高さの高いコンクリート壁等の構造物のコーナ部の形成に際して、外側のコンクリート型枠及びコーナ用型枠の内面に沿って模様板を立設配置した場合でも、その模様板が邪魔になることなく、積み上げ状態の上下コーナ用型枠の接合部において、内外側のコーナ用型枠間に間隔保持具を容易に装着して使用することができる。
【００６１】
請求項２に記載の発明によれば、間隔保持具を内外側のコーナ用型枠間に、ぐらつき等を生じることなく安定状態で架設配置することができる。
請求項３に記載の発明によれば、コンクリート構造物の形成後に、その構造物から突出した内側規制部材の先端を、幅狭部の折取り部において、容易に折取り除去することができる。
【００６２】
請求項４に記載の発明によれば、内側規制部材によって、内側の上下コーナ用型枠を所定位置に確実に規制保持することができる。
請求項５に記載の発明によれば、第１保持具の構造が簡単であるとともに、所定の強度を確保することができ、しかも、第１保持具本体と内側規制部材とを所定位置に正確に位置決めして、捩じれ等が生じることなく確実に固定することができる。
【図面の簡単な説明】
【図１】コンクリート型枠の間隔保持具の使用状態を示す分解斜視図。
【図２】その間隔保持具を拡大して示す分解斜視図。
【図３】間隔保持具の使用状態を示す要部横断面図。
【図４】図３の４−４線における部分断面図。
【図５】図４の５−５線における拡大断面図。
【図６】間隔保持具の位置決め構成の別の実施形態を示す要部断面図。
【符号の説明】
１１…コンクリート型枠、１３…内側コーナ用型枠、１４…外側コーナ用型枠、１４ａ…一側部、１４ｂ…他側部、１６…模様板、１６ｂ…模様形成面、１９…挿通孔、２０…間隔保持具、２１…第１保持具、２２…第２保持具、２５…第１保持具本体、２５ａ…ネジ部、２６…内側規制部材、２６ａ…規制片、２７…第１接合部材、２７ａ…ネジ孔、２８…第１挿入部材、２９…第１外側規制部材、３０…第２保持具本体、３０ａ…ネジ部、３１…係止フック、３２…第２接合部材、３２ａ…ネジ孔、３３…第２挿入部材、３４…第２外側規制部材、３５…幅狭部、３６…折取り部、３７…嵌合溝、３８…結合部としての結合孔、４０…結合ピン、４３…結合部としての結合ピン。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a concrete formwork spacing holder for forming cloth foundation concrete of a building.
[0002]
[Prior art]
Conventionally, when a structure such as a high concrete wall is formed, a plurality of concrete molds are connected in the longitudinal direction, and the inner and outer sides are spaced apart from each other while being stacked in the height direction. It was placed opposite. In addition, in the corner formation part of the concrete structure, the concrete formwork and the corner formwork are connected in the horizontal direction, and are arranged facing each other with a predetermined interval inside and outside in a state of being stacked in the height direction. Was.
[0003]
In this case, between the upper ends of the inner and outer concrete molds located at the uppermost part and between the lower ends of the inner and outer concrete molds located at the lowermost part, end parts for maintaining a gap between the molds An interval holder was provided. Similarly, between the upper ends of the inner and outer corner molds located at the uppermost part and between the lower ends of the inner and outer corner molds located at the lowermost part, the interval between the molds is maintained. An end spacing holder was provided.
[0004]
Further, in the joint portion between the upper and lower concrete molds in the stacked state, an intermediate part space holding tool for holding the distance between the molds is disposed between the inner and outer concrete molds. Similarly, in the joint portion between the upper and lower corner molds in the stacked state, an intermediate part interval holder for holding the gap between the inner and outer corner molds is disposed.
[0005]
On the other hand, when forming a structure such as a concrete wall with a large height of this kind, it is necessary to provide a concavo-convex pattern on the surface when it is necessary to provide a concavo-convex pattern such as a stone pattern on the outer surface of the structure. A patterned board having a surface was used. That is, a plurality of concrete molds and corner molds are connected in the horizontal direction, and are arranged facing each other at a predetermined interval on the inner and outer sides in a stacked state in the height direction, and then the outer concrete molds and corners are arranged. A pattern board was erected along the inner surface of the mold.
[0006]
[Problems to be solved by the invention]
However, in the case of forming a structure such as a concrete wall having a high height as described above, if a pattern board is erected along the inner surface of the outer concrete formwork and the corner formwork, the intermediate structure of the conventional structure is used. There has been a problem that the interval holder cannot be provided. That is, the pattern board is adjacently arranged at the joint portion of the stacked upper and lower concrete molds and the joint portion of the upper and lower corner molds. For this reason, it is difficult to mount the intermediate space holder between the inner and outer concrete molds and between the corner molds because these pattern boards get in the way.
[0007]
The present invention has been made paying attention to such problems existing in the prior art. The purpose of this is that even when a pattern board is erected along the inner surface of the outer concrete formwork and the corner formwork when forming a corner portion of a structure such as a high concrete wall. Provided a concrete formwork spacing holder that can be easily mounted and used between the inner and outer corner formwork at the joint of the stacked upper and lower corner formwork without the pattern board getting in the way There is to do.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, in the invention described in claim 1, the concrete formwork and the corner formwork are connected in the horizontal direction, and a predetermined interval is provided on the inside and outside in a state where they are stacked in the height direction. The outer and upper corner molds are arranged upright along the inner surface of the outer concrete mold and the corner mold, and the inner and outer corner molds are joined at the joint of the stacked upper and lower corner molds. An interval holder for a concrete mold that holds an interval between the first holder and a second holder that can be engaged with and disengaged from each other, and an inner lower corner mold at one end of the first holder body. An inner regulating member that can be engaged with the corner portion of the first fixing tool body is fixed, and the other end of the first holder body is inserted between one side portion of the outer upper and lower corner formwork through an insertion hole on the pattern plate. First insertion member that can be joined to the inner surface of the pattern board and the first frustum-shaped joint A first outer regulating member that can be engaged with an outer edge of one side portion of the outer upper and lower corner formwork is detachably attached to the distal end of the first insertion member, and a second holder A locking hook that can be engaged with an intermediate portion of the first holder main body is formed at one end of the main body, and an outer upper and lower corner is formed at the other end of the second holder main body through an insertion hole on the pattern plate. A second insertion member that can be inserted between the other side portions of the mold for use, and a frustoconical second joining member that can be joined to the inner surface of the pattern plate are detachably attached. A second outer regulating member that can be engaged with the outer edge of the other side portion of the outer upper and lower corner molds is detachably attached.
[0009]
According to a second aspect of the present invention, in the concrete formwork spacing retainer according to the first aspect, the inner side of the first retainer is engaged with the engagement hook of the second retainer. The restriction member, the first insertion member, and the second insertion member are arranged on substantially the same plane.
[0010]
According to a third aspect of the invention, in the concrete formwork spacing holder according to the first or second aspect, a narrow portion is formed in the inner regulating member of the first holding tool, and the narrow portion. On the top, there is provided a breaker for breaking the tip of the inner regulating member.
[0011]
According to a fourth aspect of the present invention, in the concrete mold spacing holder according to any one of the first to third aspects, an inner upper and lower corner mold is provided on the inner regulating member of the first holding tool. Among these, at least a coupling portion that can be coupled to the upper corner mold is provided.
[0012]
According to a fifth aspect of the present invention, in the concrete form spacing holder according to any one of the first to fourth aspects, the first holding body is formed of a metal rod, and the inner regulating member is a metal. The inner regulation member is welded and fixed to the first holder main body in a state where one end of the first holder main body is fitted into the fitting groove on the inner regulation member.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the concrete formwork 11 is formed in the shape of a horizontally long rectangular plate having a predetermined thickness, and a plurality of connecting pins 12 are arranged at predetermined intervals on one side edge of the outer surface thereof. And when forming a structure such as a high concrete wall, a plurality of the concrete molds 11 are connected in the longitudinal direction by the connecting pins 12 and are stacked in a plurality of stages in the height direction. The inner side and the outer side are opposed to each other with a predetermined interval.
[0014]
The inner corner mold 13 and the outer corner mold 14 are formed in a substantially L shape in a planar shape, and a plurality of connecting pins 15 are arranged at predetermined intervals on one side edge of their outer surfaces. And in the formation part of the corner part of a concrete structure with high height, while this inner and outer corner formwork 13 and 14 are connected with the concrete formwork 11 by the connecting pins 12 and 15 in the transverse direction, In a state where a plurality of stages are stacked in the height direction, they are opposed to each other with a predetermined interval inside and outside.
[0015]
The pattern plate 16 is formed in a flat plate shape with a synthetic resin, and a bent portion 16a is formed at the upper end thereof, and an uneven pattern forming surface 16b is provided on the surface. And when giving a rocky uneven | corrugated pattern to the outer surface of structures, such as a concrete wall, the bending part 16a of the pattern board 16 is put on the upper end edge of the outer concrete formwork 11 and the corner formwork 14. By being locked, the pattern plate 16 is erected and disposed along the inner surfaces of the concrete mold 11 and the corner mold 14 over the entire length in the height direction.
[0016]
The connector 17 is formed in a substantially H-shaped side surface by a metal plate. As shown in FIGS. 1 and 4, when the outer concrete form 11 and the corner form 14 are stacked in the height direction, each pair of connecting members 17 is provided between the upper and lower concrete forms 11 and the corner. It is interposed on both sides between the molds 14, respectively. Accordingly, the upper and lower concrete molds 11 and the corner molds 14 are connected so as not to be displaced inward and outward, and predetermined joints are formed between the upper and lower concrete molds 11 and the corner molds 14. A gap 18 is formed.
[0017]
The horizontally long slit-shaped insertion hole 19 is formed in an intermediate portion of the pattern plate 16 so as to correspond to the gap 18 between the upper and lower outer corner molds 14. The corner spacing holder 20 for corners is mounted through the insertion hole 19 of the pattern plate 16 between the inner and outer corner molds 13 and 14 at the joint between the upper and lower corner molds 13 and 14 in a stacked state. Is done. The interval holder 20 holds the intermediate portions of the inner and outer corner molds 13 and 14 at a predetermined interval.
[0018]
It is not shown between the upper ends of the inner and outer corner molds 13 and 14 positioned at the uppermost part in the stacked state and between the lower ends of the inner and outer corner molds 13 and 14 positioned at the lowermost part. An end spacing holder for corners is installed. And the upper end part and the lower end part of the inner and outer corner molds 13 and 14 are held at predetermined intervals by these end part interval holders.
[0019]
In addition, between the upper end portions, between the intermediate portions, and between the lower end portions of the inner and outer concrete molds 11 that are in a stacked state, gap holders having different configurations (not shown) are respectively mounted. And these space | interval holders hold | maintain the upper end part, intermediate | middle part, and lower end part of the inner and outer concrete formwork 11 at a predetermined space | interval.
[0020]
As shown in FIGS. 2 to 5, the interval holder 20 includes a first holder 21 and a second holder 22. The first holder 21 includes a first holder body 25 and an inner regulating member 26 fixed to one end of the first holder body 25. Furthermore, the first holder 21 includes a first joining member 27 that is detachably attached to the other end of the first holder body 25, and a first insertion member 28 that protrudes outside the first joining member 27. And a first outer regulating member 29 detachably attached to the tip of the first insertion member 28.
[0021]
On the other hand, the second holder 22 includes a second holder body 30 and a locking hook 31 that is bent at one end of the second holder body. Furthermore, the second holder 22 includes a second joining member 32 that is detachably attached to the other end of the second holder body 30, and a second insertion member 33 that projects from the second joining member 32. And a second outer regulating member 34 detachably attached to the tip of the second insertion member 33.
[0022]
The first holder body 25 is formed of a metal rod, and a threaded portion 25a is formed at an end portion thereof, and a bent portion 25b that is bent at an angle of about 120 degrees is formed at an intermediate portion thereof. . The 2nd holder main body 30 is formed with the metal bar, and the thread part 30a is formed in the edge part. Then, as shown in FIG. 3, the locking hook 31 of the second holder main body 30 is detachably engaged with the bent portion 25 b of the first holder main body 25, and in this engaged state, The first insertion member 28 and the second insertion member 33 are arranged on substantially the same plane.
[0023]
The inner restricting member 26 is formed of a metal plate, and a pair of restricting pieces 26a that can be engaged with both inner and outer side edges of the corner portion of the inner corner mold 13 located at the lower portion project from the lower surface of the tip. Yes. The narrow portion 35 is formed at the center of the inner regulating member 26, and a thin-walled break portion 36 is formed on the narrow portion 35 so as to extend in the width direction.
[0024]
The concave fitting groove 37 is formed to extend in the longitudinal direction at the center of the upper surface of the base end of the inner regulating member 26. The inner regulating member 26 is welded and fixed to the first holder body 25 in a state where the end of the first holder body 25 opposite to the threaded portion 25a is fitted into the fitting groove 37.
[0025]
A coupling hole 38 as a coupling portion is formed on the inner regulating member 26. As shown in FIGS. 3 and 4, with the inner regulating member 26 disposed between the stacked upper and lower inner corner molds 13, the coupling holes 38 and the upper and lower inner corner molds 13 are inserted. The coupling pin 40 is inserted into the hole 39. As a result, the upper and lower inner corner molds 13 are coupled to the inner regulating member 26 and the position thereof is regulated.
[0026]
The first and second joining members 27 and 32 are formed of a synthetic resin into a truncated cone shape that gradually increases in diameter toward the outside, and screw holes 27a and 32a are formed in the center of the inside, and the outside is formed. Boss portions 27b and 32b are formed at the center. Then, by screwing these screw holes 27a and 32a into the screw portions 25a and 30a of the first and second holder main bodies 25 and 30, the first and second joining members 27 and 32 are connected to the first and second connecting members 27 and 32, respectively. The second holder main bodies 25 and 30 are detachably attached. Further, as shown in FIGS. 3 and 4, when the interval holder 20 is mounted between the inner and outer corner molds 13 and 14, these joining members 27 and 32 are joined to the inner surface of the pattern plate 16. It has come to be.
[0027]
The first and second insertion members 28 and 33 are formed of a metal plate, and a knurled shaft 41 is projected from the base end of the first and second insertion members 28 and 33, and a slit 42 is formed to extend in the longitudinal direction at the distal end. Then, the first and second insertion members 28 and 33 are joined to the first and second joining members by press-fitting and caulking the knurled shaft 41 into the boss portions 27b and 32b of the first and second joining members 27 and 32, respectively. It protrudes and is fixed to the outer surface of the members 27 and 32.
[0028]
2, the width W1 of the first and second insertion members 28, 33 is smaller than the outer diameter D1 of the maximum diameter portion of the first and second joining members 27, 32. Is set to As shown in FIGS. 3 and 4, when the interval holder 20 is mounted between the inner and outer corner molds 13, 14, the first insertion member 28 opens the insertion hole 19 on the pattern plate 16. Then, it is inserted into the gap 18 between the one side portions 14a of the upper and lower outer corner molds 14. Further, the second insertion member 33 is inserted into the gap 18 between the other side portions 14 b of the upper and lower outer corner molds 14 through the insertion holes 19 on the pattern plate 16.
[0029]
The first and second outer regulating members 29 and 34 are made of metal plate wedge members. As shown in FIGS. 3 and 4, when mounting the distance holder 20 between the inner and outer corner molds 13, 14, the first outer regulating member 29 is slit on the first insertion member 28. The first outer regulating member 29 is engaged with the outer edge of the one side portion 14 a of the upper and lower outer corner molds 14 by being fitted into the inner wall 42. Further, by inserting the second outer regulating member 34 into the slit 42 on the second insertion member 33, the second outer regulating member 34 is engaged with the outer edge of the other side portion 14 b of the upper and lower outer corner formwork 14. It comes to match.
[0030]
Next, the operation of the concrete formwork spacing holder configured as described above will be described.
When forming a corner portion of a structure such as a high concrete wall, the concrete mold 11 and the corner molds 13 and 14 are connected in the horizontal direction by connecting pins 12 and 15 as shown in FIG. In addition to being connected to each other, they are arranged facing each other at a predetermined interval in a state where a plurality of stages are stacked in the height direction. Moreover, when providing uneven | corrugated patterns, such as a grain pattern, on the outer surface of a structure, the pattern board 16 is standingly arranged along the inner surface of the outer concrete formwork 11 and the corner formwork 14. FIG.
[0031]
In this case, in the corner portion, a pair of connecting members 17 are arranged on the outer corner mold 14 in a state where the lower inner and outer corner molds 13 and 14 are opposed to each other, and then the outer portion is disposed on the upper portion thereof. Stack the corner formwork 14. As a result, a predetermined gap 18 is formed at the joint between the upper and lower outer corner molds 14. In this state, the pattern plate 16 is erected along the inner surfaces of the upper and lower outer molds 14.
[0032]
Next, in a state where the first holder 21 and the second holder 22 of the interval holder 20 are separated, the first insertion member 28 of the first holder 21 is inserted through the insertion hole 19 on the pattern plate 16. Then, it is inserted into the gap 18 between the one side portion 14a of the upper and lower outer corner molds 14. At the same time, the inner regulating member 26 of the first holding tool 21 is placed on the corner portion of the lower inner corner mold 13. Then, the pair of restricting pieces 26 a are engaged with both inner and outer side edges of the corner portion of the lower inner corner mold 13, and the first joining member 27 of the first holder 21 is joined to the inner surface of the pattern plate 16. The
[0033]
Further, the second insertion member 33 of the second holding tool 22 is inserted into the gap 18 between the other side portions 14 b of the upper and lower outer corner molds 14 through the insertion holes 19 on the pattern plate 16. At the same time, the locking hook 31 of the second holder 22 is engaged with the intermediate bent portion 25 b of the first holder 21. Then, the second joining member 32 of the second holder 22 is joined to the inner surface of the pattern plate 16.
[0034]
In this state, the upper inner corner mold 13 is stacked on the lower inner corner mold 13. Then, the coupling pin 40 is inserted into the insertion hole 39 on the upper and lower inner corner molds 13 and the coupling hole 38 on the inner regulating member 26. Then, the inner regulation member 26 is coupled to both inner corner molds 13 via the coupling pins 40, and the regulation pieces 26a of the inner regulation member 26 are formed on both inner and outer edges of the corners of the lower corner mold 13. The positions of the inner corner molds 13 are regulated by being engaged.
[0035]
Thereafter, when the first outer regulating member 29 is inserted into the slit 42 on the first insertion member 28 of the first holding tool 21, the first outer regulating member 29 is formed on the one side portion 14 a of the upper and lower outer corner formwork 14. Engage with the outer edge. Further, when the second outer regulating member 34 is fitted into the slit 42 on the second insertion member 33 of the second holding tool 22, the second outer regulating member 34 is formed on the other side portion 14 b of the upper and lower outer corner formwork 14. Engage with the outer edge. The positions of the side portions 14a and 14b of the outer corner form 14 are regulated between the first and second outer regulating members 29 and 34 and the first and second joining members 27 and 32. .
[0036]
When concrete is placed between the concrete mold 11 and the corner molds 13 and 14 in this state, a structure such as a high concrete wall is formed. Further, the rock-like uneven pattern is transferred to the outer surface of the structure by the pattern forming surface 16b of the pattern board 16. And in the corner part of this concrete structure, the intermediate part containing the 1st holder main body 25 and the 2nd holder main body 30 of the space | interval holder 20 is embed | buried.
[0037]
On the other hand, when the corner molds 13 and 14 are released from the corner portion after the concrete structure is formed, the coupling pin 40 is first removed from the coupling hole 38 and the insertion hole 39, and the upper inner corner mold 13 is formed. Remove. In this state, the inner regulating member 26 of the first holder 21 is broken at the breaker 36 to remove the protruding portion of the inner regulating member 26 from the concrete structure. Thereafter, the lower inner corner form 13 is removed.
[0038]
Next, the first outer regulating member 29 of the first holding tool 21 is extracted from the slit 42 of the first insertion member 28, and the second outer regulating member 34 of the second holding tool 22 is removed from the slit 42 of the second insertion member 33. Pull out. In this state, the upper and lower outer corner molds 14 are removed, and the pattern plate 16 is released from the surface of the concrete structure.
[0039]
Thereafter, the first insertion member 28 and the first joining member 27 of the first holder 21 are rotated to screw the screw hole 27a of the first joint member 27 from the screw portion 25a of the first holder body 25, and The first insertion member 28 and the first joining member 27 are removed from the end of the first holder body 25. Similarly, the second insertion member 33 and the second joining member 32 of the second holder 22 are rotated to screw the screw hole 32a of the second joint member 32 from the screw portion 30a of the second holder body 30, The second insertion member 33 and the second joining member 32 are removed from the end of the second holder body 30.
[0040]
Then, by removing the first and second joining members 27, 32, the mortar is filled in the recesses formed on the outer surface of the concrete structure to repair the surface of the concrete structure. Is completed.
[0041]
The effects exhibited by the above embodiment will be described below.
In the concrete formwork spacing holder of this embodiment, a first holder 21 and a second holder 22 that are detachable from each other are equipped. An inner regulating member 26 that can be engaged with a corner portion of the inner lower corner mold 13 is fixed to one end of the first holder body 25. Further, at the other end of the first holder body 25, a first insertion member 28 that can be inserted between the one side portion 14a of the outer upper and lower corner mold 14 via the insertion hole 19 on the pattern plate 16, and A frustoconical first joining member 27 that can be joined to the inner surface of the pattern plate 16 is detachably attached. Further, a first outer regulating member 29 that can be engaged with an outer edge of one side portion of the outer upper and lower corner formwork 14 is detachably attached to the distal end of the first insertion member 28.
[0042]
On the other hand, a locking hook 31 that can be engaged with an intermediate portion of the first holder body 25 is formed at one end of the second holder body 30. Further, at the other end of the second holder main body 30, a second insertion member 33 that can be inserted between the other side portions 14b of the outer upper and lower corner molds 14 through the insertion holes 19 on the pattern plate 16, and A frustoconical second joining member 32 that can be joined to the inner surface of the pattern plate 16 is detachably attached. Furthermore, the 2nd outer side regulation member 34 which can be engaged with the other side part outer edge of the outer upper and lower corner formwork 14 is attached to the front-end | tip of the 2nd insertion member 32 so that attachment or detachment is possible.
[0043]
For this reason, even when the pattern board 16 is erected along the inner surfaces of the outer concrete formwork 11 and the corner formwork 14 when forming a corner portion of a structure such as a high concrete wall, the pattern The corner spacing holder 20 is easily mounted between the inner and outer corner molds 13 and 14 at the joint between the stacked upper and lower corner molds 13 and 14 without obstructing the plate 16. Can do.
In the concrete formwork spacing holder of this embodiment, the inner restriction member 26 and the first insertion member are engaged with the engaging hook 31 of the second holder 22 engaged with the intermediate portion of the first holder 21. The member 28 and the second insertion member 33 are arranged on substantially the same plane.
[0044]
For this reason, the space | interval holding | maintenance tool 20 can be erected and arrange | positioned in a stable state, without producing wobble etc. between the inner and outer corner formwork 13,14.
In the concrete formwork spacing holder of this embodiment, a narrow portion 35 is formed on the inner restricting member 26 of the first retainer 21, and the tip of the inner restricting member 26 is folded on the narrow portion 35. A take-off portion 36 for taking is provided.
[0045]
For this reason, after the formation of the concrete structure, the tip of the inner regulating member 26 protruding from the structure can be easily removed by the folding part 36 of the narrow part 35.
In the concrete formwork spacing holder of this embodiment, the inner restriction member 26 of the first holder 21 is coupled to at least the upper corner formwork 13 in the inner upper and lower corner formwork 13. A coupling hole 38 is provided as a coupling portion that can be coupled via the pin 40 or the like.
[0046]
Therefore, the inner upper and lower corner mold 13 can be reliably regulated and held at a predetermined position by the inner regulating member 26.
In the concrete formwork spacing holder of this embodiment, the first holder body 25 is formed of a metal rod, and the inner regulating member 26 is formed of a metal plate. The inner regulating member 26 is welded and fixed to the first holder main body 25 with one end of the first holder main body 25 fitted in the fitting groove 37 on the inner regulating member 26.
[0047]
For this reason, the structure of the first holder 21 is simple, a predetermined strength can be ensured, and the first holder body 25 and the inner regulating member 26 are accurately positioned at predetermined positions, It can be securely fixed without twisting or the like. In the concrete formwork spacing holder of this embodiment, the width W1 of the first and second insertion members 28, 33 is smaller than the outer diameter D1 of the first and second joining members 27, 32. Is set.
[0048]
For this reason, there is no need to form a large insertion hole 19 for inserting the first and second insertion members 28 and 33 on the pattern plate 16, and the portion where the pattern is lost on the surface of the structure is reduced. be able to.
In the concrete formwork spacing holder of this embodiment, the first and second outer regulating members 29 and 34 are detachable wedge members that can be attached to and detached from the slits 42 on the first and second insertion members 28 and 33. It is composed of
[0049]
For this reason, the outer corner mold 14 can be formed by a simple operation of driving the first and second outer regulating members 29 and 34 made of wedge members into the slits 42 on the first and second insertion members 28 and 33. The both side portions 14a and 14b can be reliably regulated.
In the concrete formwork spacing holder of this embodiment, the first and second joining members 27 and 32 are made of synthetic resin. For this reason, it is possible to prevent the surface of the pattern board 16 from being damaged by the joining of the first and second joining members 27 and 32 to the pattern board 16.
[0050]
Next, another embodiment of the positioning configuration of the interval holder 20 will be described with reference to FIG.
Now, in this embodiment, the coupling pin 43 as a coupling part protrudes and is fixed to both the upper and lower surfaces of the inner regulating member 26 of the first holder 21. Then, by inserting the coupling pin 43 through the insertion holes 39 of the upper and lower inner corner molds 13, the inner regulating member 26 is coupled to the upper and lower inner corner molds 13, so The position of the mold 13 is regulated. In this embodiment, one end of the spacing holder 20 is regulated by inserting the coupling pin 43 through the insertion hole 39 of the upper and lower inner corner molds 13, so the pair of regulating pieces 26a is not necessary. is there.
[0051]
Therefore, also in this other embodiment, the same effect as the above-described embodiment can be exhibited.
It should be noted that the present invention can be modified and embodied as follows.
[0052]
First and second holder main bodies 25 and 30, inner regulating member 26, first and second joining members 27 and 32, first and second insertion members 28 and 33, first and second outer sides The restriction members 29 and 34 are all made of the same metal material, or only the joining members 27 and 32 are made of aluminum.
[0053]
When comprised in this way, the structure of the space | interval holder 20 can be simplified or required intensity | strength can be hold | maintained.
-The restriction piece 26a of the inner restriction member 26 with respect to the first holder main body 25 is bent so as to correspond to both inner and outer side edges of the corner portion of the inner corner mold 13.
[0054]
When comprised in this way, the space | interval holder 20 can be positioned and fixed in a more stable state.
A connecting pin is used as an attachment / detachment structure for the first joint member 27 and the first insertion member 28 with respect to the first holder body 25 and an attachment / detachment structure for the second joint member 32 and the second insertion member 33 with respect to the second holder body 30. Use or change as appropriate.
[0055]
In the embodiment shown in FIGS. 1 to 5, the coupling hole 38 of the inner regulating member 26 is omitted.
Even in such a configuration, the restricting piece 26a of the inner restricting member 26 can be engaged with both the inner and outer side edges of the corner portion of the lower inner corner formwork 13, and one end of the interval holder 20 is position restricted. can do.
[0056]
In the embodiment shown in FIGS. 1 to 5, the restriction piece 26a of the inner restriction member 26 is omitted.
When configured in this manner, the inner restriction member 26 is used for the upper and lower inner corners by inserting the coupling pin 40 through the insertion hole 39 on the upper and lower inner corner molds 13 and the coupling hole 38 on the inner restriction member 26. It can be positioned and fixed to the mold 13.
[0057]
Furthermore, the technical idea grasped from the embodiment will be described below.
A male screw hole is formed at the end of the first and second holder body, and the male screw hole of the first and second holder body is respectively screwed into the first and second joining members. The interval holder of the concrete formwork of Claim 5 formed.
[0058]
When comprised in this way, a 1st and 2nd holder main body can be integrated easily and reliably to a 1st and 2nd joining member, respectively.
The concrete formwork according to any one of claims 1 to 5, wherein base ends of the first and second insertion members are knurled shafts, and each knurled shaft is press-fitted and caulked into the first and second joining members, respectively. Spacing retainer.
[0059]
When comprised in this way, it can fix reliably, without rotating a 1st and 2nd insertion member with respect to a 1st and 2nd joining member, respectively.
[0060]
【The invention's effect】
Since this invention is comprised as mentioned above, there exist the following effects.
According to the first aspect of the present invention, when the corner portion of a structure such as a high concrete wall is formed, the pattern board is erected along the inner surface of the outer concrete formwork and the corner formwork. Even in such a case, the pattern holder can be easily mounted and used between the inner and outer corner molds at the joint portion of the upper and lower corner molds in a stacked state without being disturbed.
[0061]
According to the second aspect of the present invention, the interval holder can be installed and placed in a stable state between the inner and outer corner molds without causing wobble or the like.
According to the third aspect of the present invention, after the concrete structure is formed, the front end of the inner regulating member protruding from the structure can be easily removed at the folding part of the narrow part.
[0062]
According to the fourth aspect of the present invention, the inner upper and lower corner molds can be reliably regulated and held at predetermined positions by the inner regulating member.
According to the fifth aspect of the present invention, the structure of the first holder is simple, a predetermined strength can be ensured, and the first holder body and the inner regulating member are accurately placed at predetermined positions. And can be securely fixed without twisting or the like.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a usage state of a concrete formwork spacing holder.
FIG. 2 is an exploded perspective view showing the gap holder in an enlarged manner.
FIG. 3 is a cross-sectional view of an essential part showing a use state of a spacing holder.
4 is a partial cross-sectional view taken along line 4-4 of FIG.
FIG. 5 is an enlarged cross-sectional view taken along line 5-5 in FIG.
FIG. 6 is a cross-sectional view of a main part showing another embodiment of the positioning configuration of the interval holder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Concrete formwork, 13 ... Inner corner formwork, 14 ... Outer corner formwork, 14a ... One side part, 14b ... Other side part, 16 ... Pattern board, 16b ... Pattern formation surface, 19 ... Insertion hole, DESCRIPTION OF SYMBOLS 20 ... Space | interval holder, 21 ... 1st holder, 22 ... 2nd holder, 25 ... 1st holder main body, 25a ... Screw part, 26 ... Inner side regulation member, 26a ... Restriction piece, 27 ... 1st joining member 27a ... Screw hole, 28 ... First insertion member, 29 ... First outer regulating member, 30 ... Second holder body, 30a ... Screw part, 31 ... Locking hook, 32 ... Second joining member, 32a ... Screw Hole 33 33 Second insertion member 34 Second outer regulating member 35 Narrow portion 36 Folding portion 37 Fitting groove 38 Bonding hole as coupling portion 40 Binding pin 43 ... Connecting pins as connecting parts.

Claims

The concrete formwork and the corner formwork are connected in the horizontal direction, and are placed facing each other at a predetermined interval on the inside and outside in a state of being stacked in the height direction, and the inner surface of the outer concrete formwork and the corner formwork In the concrete formwork spacing holder that holds the spacing between the inner and outer corner molds at the joints of the upper and lower corner molds in a stacked state,
A first holding tool and a second holding tool which are detachable from each other are provided, and an inner regulating member which can be engaged with a corner portion of the inner lower corner mold is fixed to one end of the first holding tool body. The other end of the first holder body can be joined to the inner surface of the pattern plate with a first insertion member that can be inserted between one side of the outer upper and lower corner molds through an insertion hole on the pattern plate. A first frustoconical first joining member is detachably attached, and a first outer regulating member that can be engaged with an outer edge of one side portion of the outer upper and lower corner mold is attached to the tip of the first insertion member. A locking hook that can be engaged with an intermediate portion of the first holder main body is formed at one end of the second holder main body, and the other end of the second holder main body is inserted on the pattern board. A second insertion member that can be inserted between the other side portions of the outer upper and lower corner molds through the hole, and a second truncated conical member that can be joined to the inner surface of the pattern plate The second insertion member is attached to the distal end of the second insertion member, and a second outer regulating member that can be engaged with the outer edge of the outer side of the outer upper and lower corner formwork is detachably attached. Ingredients.

The inner regulating member, the first insertion member, and the second insertion member are arranged on substantially the same plane in a state in which the locking hook of the second holding tool is engaged with the intermediate portion of the first holding tool. The gap holder for the concrete form according to claim 1.

The narrow inner part is formed in the inner side regulation member of the said 1st holder, The folding part for breaking the front-end | tip of an inner side regulation member was provided on the narrow part, The Claim 1 or Claim 2 provided. Concrete formwork spacing retainer.

The inner regulation member of the first holder is provided with a coupling portion that can be coupled to at least the upper corner mold among the inner upper and lower corner molds. Concrete formwork spacing retainer.

The first holder body is formed of a metal rod, the inner restricting member is formed of a metal plate, and one end of the first holder body is fitted in the fitting groove on the inner restricting member. The concrete mold spacing holder according to any one of claims 1 to 4, wherein the first mold body is fixed by welding to the first holder body.