A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To use not only a bit having a serrated shape with a plurality of apex points and valley points equally spaced apart at its outer circumference but also a bit of regular hexagonal or regular square as seen from its top plan view.SOLUTION: A washer faced nut of this invention comprises a cylindrical sleeve segment 11 engaged in thread with an anchor bolt; and a disc-like flange segment 12 formed at the upper end of the sleeve segment 11. The lower surface of the flange segment 12 is provided with cutting blades 12a and in turn the upper surface of the flange segment 12 is provided with an engaged recess segment 12b engaged with a bit 2. The engaged recess segment 12b has its outer circumference of a serrated shape as seen from its top plan view in which a regular hexagonal acting as a reference shape and another regular hexagonal with a top plan view shape of the former regular hexagonal turned by 30 degrees around its center are overlapped to each other, a total number of its 12 apexes 12b1 are spaced apart by 30 degrees and valley points 12b2 are arranged between each of the apexes 12b1 one by one, and 12 apex points 12b1 and 12 valley points 12b2 are equally spaced apart (a spacing of 15 degrees), and recessed in a vertical direction from the upper surface of the flange segment 12 toward the lower end of the sleeve segment 11.
【課題】外周に複数の頂点および谷点を等間隔で有するギザギザ形状のビットだけでなく、平面視正六角形や正四角形のビットも使用すること。【解決手段】アンカーボルトに螺合する円筒状のスリーブ部１１と、スリーブ部１１の上端部に形成された円盤状のフランジ部１２とからなり、フランジ部１２の下面側には、切削刃１２ａを設ける一方、フランジ部１２の上面側には、ビット２に係合する被係合凹部１２ｂを設け、被係合凹部１２ｂは、基準とする正六角形とその正六角形の平面形状をその中心に対し３０度回転させた正六角形とを重ね合わせた１２個の頂点１２ｂ１が３０度間隔で設けられ、かつ、その各頂点１２ｂ１間に谷点１２ｂ２を１つずつ設けた１２個の頂点１２ｂ１および１２個の谷点１２ｂ２を等間隔（１５度間隔）で有する平面視外周がギザギザ形状で、フランジ部１２の上側面からスリーブ部１１の下端部に向かって鉛直に凹んだ形状に形成されている。【選択図】図２
PROBLEM TO BE SOLVED: To use not only a bit having a serrated shape with a plurality of apex points and valley points equally spaced apart at its outer circumference but also a bit of regular hexagonal or regular square as seen from its top plan view.SOLUTION: A washer faced nut of this invention comprises a cylindrical sleeve segment 11 engaged in thread with an anchor bolt; and a disc-like flange segment 12 formed at the upper end of the sleeve segment 11. The lower surface of the flange segment 12 is provided with cutting blades 12a and in turn the upper surface of the flange segment 12 is provided with an engaged recess segment 12b engaged with a bit 2. The engaged recess segment 12b has its outer circumference of a serrated shape as seen from its top plan view in which a regular hexagonal acting as a reference shape and another regular hexagonal with a top plan view shape of the former regular hexagonal turned by 30 degrees around its center are overlapped to each other, a total number of its 12 apexes 12b1 are spaced apart by 30 degrees and valley points 12b2 are arranged between each of the apexes 12b1 one by one, and 12 apex points 12b1 and 12 valley points 12b2 are equally spaced apart (a spacing of 15 degrees), and recessed in a vertical direction from the upper surface of the flange segment 12 toward the lower end of the sleeve segment 11.
【課題】外周に複数の頂点および谷点を等間隔で有するギザギザ形状のビットだけでなく、平面視正六角形や正四角形のビットも使用すること。【解決手段】アンカーボルトに螺合する円筒状のスリーブ部１１と、スリーブ部１１の上端部に形成された円盤状のフランジ部１２とからなり、フランジ部１２の下面側には、切削刃１２ａを設ける一方、フランジ部１２の上面側には、ビット２に係合する被係合凹部１２ｂを設け、被係合凹部１２ｂは、基準とする正六角形とその正六角形の平面形状をその中心に対し３０度回転させた正六角形とを重ね合わせた１２個の頂点１２ｂ１が３０度間隔で設けられ、かつ、その各頂点１２ｂ１間に谷点１２ｂ２を１つずつ設けた１２個の頂点１２ｂ１および１２個の谷点１２ｂ２を等間隔（１５度間隔）で有する平面視外周がギザギザ形状で、フランジ部１２の上側面からスリーブ部１１の下端部に向かって鉛直に凹んだ形状に形成されている。【選択図】図２
WASHER FACED NUT
座付きナット
YOSHIDA TAKASHI (author)
2015-12-14
Patent
Electronic Resource
Japanese
IPC:
F16B
DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES
,
Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile
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E02D
FOUNDATIONS
,
Gründungen