A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide a roof bolt that improves an efficiency of a fixing work when constructing roofing materials and suppresses falling of water droplets due to dew condensation.SOLUTION: A roof bolt 1 according to the present invention includes a drilling guide shaft 2, a pressing cap portion 12, a buffer portion 15, a spreading fixing portion 18, and a rising nut portion 31. The drilling guide shaft 2 includes a male screw portion 4, a tool engaging portion 3, and a cutting blade portion 6. The spreading fixing portion 18 comprises a mounting portion 20, a resistance portion 21, and a spreading portion 25 integrally formed of a synthetic resin material. The spreading portion 25 is formed in a cylindrical shape with a plurality of spreading pieces 26 freely expanding outwardly from the male screw portion 4 with the resistance portion 21 side as a start point, as a circumferential side wall, and is connected to a lower portion of the resistance portion 21. The rising nut portion 31 is screwed into a gap between the spreading portion 25 and the cutting blade portion 6. Further a pressure receiving starting point 27 is formed at a lower edge of the spreading portion 25, and a pressing advancing portion 32 approximately fitting with the pressure receiving starting point 27 is formed at an upper edge of the rising nut portion 31.SELECTED DRAWING: Figure 1
【課題】屋根材を施工する際の固定作業の効率を向上させると共に結露による水滴の落下を抑制するルーフボルトを提供する。【解決手段】本発明に係るルーフボルト１は、穿孔案内軸２と押圧キャップ部１２と緩衝部１５と展開固定部１８と上昇ナット部３１と、からなり、穿孔案内軸２は雄ネジ部４と工具係合部３と切り刃部６を有し、展開固定部１８は、合成樹脂材料にて一体に形成した載置部２０と抵抗部２１と展開部２５と、からなり、展開部２５は抵抗部２１側を起点として雄ネジ部４の外方に拡開自在の複数の展開片２６を周側壁として筒状に形成すると共に抵抗部２１の下部に連設し、上昇ナット部３１は、展開部２５と切り刃部６との間隙に螺入し、更に、展開部２５の下端縁に受圧起点部２７を形成すると共に上昇ナット部３１の上端縁に受圧起点部２７と略嵌合する押圧進出部３２を形成したことを特徴とする。【選択図】図１
To provide a roof bolt that improves an efficiency of a fixing work when constructing roofing materials and suppresses falling of water droplets due to dew condensation.SOLUTION: A roof bolt 1 according to the present invention includes a drilling guide shaft 2, a pressing cap portion 12, a buffer portion 15, a spreading fixing portion 18, and a rising nut portion 31. The drilling guide shaft 2 includes a male screw portion 4, a tool engaging portion 3, and a cutting blade portion 6. The spreading fixing portion 18 comprises a mounting portion 20, a resistance portion 21, and a spreading portion 25 integrally formed of a synthetic resin material. The spreading portion 25 is formed in a cylindrical shape with a plurality of spreading pieces 26 freely expanding outwardly from the male screw portion 4 with the resistance portion 21 side as a start point, as a circumferential side wall, and is connected to a lower portion of the resistance portion 21. The rising nut portion 31 is screwed into a gap between the spreading portion 25 and the cutting blade portion 6. Further a pressure receiving starting point 27 is formed at a lower edge of the spreading portion 25, and a pressing advancing portion 32 approximately fitting with the pressure receiving starting point 27 is formed at an upper edge of the rising nut portion 31.SELECTED DRAWING: Figure 1
【課題】屋根材を施工する際の固定作業の効率を向上させると共に結露による水滴の落下を抑制するルーフボルトを提供する。【解決手段】本発明に係るルーフボルト１は、穿孔案内軸２と押圧キャップ部１２と緩衝部１５と展開固定部１８と上昇ナット部３１と、からなり、穿孔案内軸２は雄ネジ部４と工具係合部３と切り刃部６を有し、展開固定部１８は、合成樹脂材料にて一体に形成した載置部２０と抵抗部２１と展開部２５と、からなり、展開部２５は抵抗部２１側を起点として雄ネジ部４の外方に拡開自在の複数の展開片２６を周側壁として筒状に形成すると共に抵抗部２１の下部に連設し、上昇ナット部３１は、展開部２５と切り刃部６との間隙に螺入し、更に、展開部２５の下端縁に受圧起点部２７を形成すると共に上昇ナット部３１の上端縁に受圧起点部２７と略嵌合する押圧進出部３２を形成したことを特徴とする。【選択図】図１
ROOF BOLT
ルーフボルト
KUNIGAMI KATSUJI (author)
2023-12-13
Patent
Electronic Resource
Japanese
IPC:
E04D
ROOF COVERINGS
,
Dacheindeckungen
/
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
| Engineering Index Backfile | 1953
Tema Archive | 1990
Engineering Index Backfile | 1968
Special roof bolt applications
| Engineering Index Backfile | 1954
Pull tests as measure of roof bolt efficiency and of roof bolt design
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