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SCREW-TYPE REINFORCING BAR JOINT FOR DEFORMED REINFORCING BAR
PROBLEM TO BE SOLVED: To provide a screw-type reinforcing bar joint for a deformed reinforcing bar that satisfies requirements for withstanding both tensile force and compression force, at the same time facilitating construction work.SOLUTION: A screw-type reinforcing bar joint for a deformed reinforcing bar includes male screw parts 1c and 1c at edges that face each other of a pair of reinforcing bars 1 and 1 to be connected to each other, a coupler 2 screwed over both the male screw parts 1c and 1c, and a pair of lock nuts 3. The male screw part 1c has a thread formed at a large-diameter part with a diameter larger than the reinforcing bar body, and an inner diameter that is a screw thread diameter of the coupler 2 is smaller than an outer diameter of a protrusion 1b. A screw part 1d on the protrusion is formed on a part continuing from the male screw part 1c of each of the reinforcing bars 1 and 1, with a section h without the protrusion in between, the screw part on the protrusion enabling the lock nut 3 and the coupler 2 to escape while being screwed to each other. A dimension of each part is determined so that an appropriate screwing depth may be obtained for leaving an allowable gap dimension between the reinforcing bars 1 and 1, when an edge surface of the lock nut 3 is located on the section h without the protrusion. The lock nut 3 may be screwed on the screw part 1d on the protrusion also.SELECTED DRAWING: Figure 1
【課題】耐引張力および耐圧縮力上の両方の要件を充足でき、かつ施工を容易とする異形鉄筋のネジ式鉄筋継手を提供する。【解決手段】互いに接続される一対の鉄筋１，１の対向する端部に雄ねじ部１ｃ，１ｃを有し、両雄ねじ部１ｃ，１ｃに渡って螺合するカプラー２と、一対のロックナット３とを備える。各雄ねじ部１ｃは、鉄筋本体よりも大径の大径部にねじ溝を形成してなり、前記カプラー２のねじ山径である内径が、突条１ｂの外径よりも小径である。各鉄筋１，１の雄ねじ部１ｃに続く部分に、ロックナット３およびカプラー２を螺合状態で逃がし可能とする突条上ねじ部１ｄを、突条無し区間ｈを介して設ける。ロックナット３の端面が突条無し区間ｈに位置すれば、両鉄筋１，１間に許容空き寸法が得られる適正螺合深さとなるように各部の寸法関係を設定する。ロックナット３は、突条上ねじ部１ｄに螺合させるようにしても良い。【選択図】図１
SCREW-TYPE REINFORCING BAR JOINT FOR DEFORMED REINFORCING BAR
PROBLEM TO BE SOLVED: To provide a screw-type reinforcing bar joint for a deformed reinforcing bar that satisfies requirements for withstanding both tensile force and compression force, at the same time facilitating construction work.SOLUTION: A screw-type reinforcing bar joint for a deformed reinforcing bar includes male screw parts 1c and 1c at edges that face each other of a pair of reinforcing bars 1 and 1 to be connected to each other, a coupler 2 screwed over both the male screw parts 1c and 1c, and a pair of lock nuts 3. The male screw part 1c has a thread formed at a large-diameter part with a diameter larger than the reinforcing bar body, and an inner diameter that is a screw thread diameter of the coupler 2 is smaller than an outer diameter of a protrusion 1b. A screw part 1d on the protrusion is formed on a part continuing from the male screw part 1c of each of the reinforcing bars 1 and 1, with a section h without the protrusion in between, the screw part on the protrusion enabling the lock nut 3 and the coupler 2 to escape while being screwed to each other. A dimension of each part is determined so that an appropriate screwing depth may be obtained for leaving an allowable gap dimension between the reinforcing bars 1 and 1, when an edge surface of the lock nut 3 is located on the section h without the protrusion. The lock nut 3 may be screwed on the screw part 1d on the protrusion also.SELECTED DRAWING: Figure 1
【課題】耐引張力および耐圧縮力上の両方の要件を充足でき、かつ施工を容易とする異形鉄筋のネジ式鉄筋継手を提供する。【解決手段】互いに接続される一対の鉄筋１，１の対向する端部に雄ねじ部１ｃ，１ｃを有し、両雄ねじ部１ｃ，１ｃに渡って螺合するカプラー２と、一対のロックナット３とを備える。各雄ねじ部１ｃは、鉄筋本体よりも大径の大径部にねじ溝を形成してなり、前記カプラー２のねじ山径である内径が、突条１ｂの外径よりも小径である。各鉄筋１，１の雄ねじ部１ｃに続く部分に、ロックナット３およびカプラー２を螺合状態で逃がし可能とする突条上ねじ部１ｄを、突条無し区間ｈを介して設ける。ロックナット３の端面が突条無し区間ｈに位置すれば、両鉄筋１，１間に許容空き寸法が得られる適正螺合深さとなるように各部の寸法関係を設定する。ロックナット３は、突条上ねじ部１ｄに螺合させるようにしても良い。【選択図】図１
SCREW-TYPE REINFORCING BAR JOINT FOR DEFORMED REINFORCING BAR
異形鉄筋のねじ式鉄筋継手
WAKIYAMA KOZO (author) / HIRAI KEIJI (author) / FUKUDA AKIRA (author)
2016-06-20
Patent
Electronic Resource
Japanese
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