JPH0347050Y2

JPH0347050Y2 -

Info

Publication number: JPH0347050Y2
Application number: JP10587584U
Authority: JP
Priority date: 1984-07-13
Filing date: 1984-07-13
Publication date: 1991-10-07
Also published as: JPS6120823U

Description

【考案の詳細な説明】産業上の利用分野基礎工事等に用いる異形鉄筋の接続金具に関す
る。[Detailed description of the invention] Industrial application field: Concerns connection fittings for deformed reinforcing bars used in foundation construction, etc.

従来の技術第５図〜７図に示したように互に接続しようと
する異形鉄筋１，２の端部に取付けられた接手管
３，４にそれぞれ設けられている逆方向の雌ネジ
部３ａ，４ａに螺合される逆方向の雄ネジ部５
ａ，５ｂを左、右側部に有し、これら雄ネジ部５
ａ，５ｂ間の中央部にトルクコントロール軸５ｃ
を突設したボルト杆５と、前記トルクコントロー
ル軸５ｃを内周面軸方向に形成した軸受溝６ａ内
に挿入した状態でボルト杆５の中央部外周に取付
けられている六角形状の締付リング６とからなつ
ていて、該締付リング６でボルト杆５を回転さ
せ、該ボルト杆５の左、。右側部の雄ネジ部５ａ，
５ｂを接手管３，４の雌ネジ部３ａ，４ａに螺合
して異形鉄筋１，２の接続を図ると共にボルト杆
５に必要以上の締付トルクが掛ると前記トルクコ
ントロール軸５ｃが折損し、締付リング６が逆転
するようにした異形鉄筋の接続金具は公知である
（特願昭53−35031号、特開昭54−126663号公報）。BACKGROUND ART As shown in FIGS. 5 to 7, female screw portions 3a in opposite directions are provided in joint pipes 3 and 4 attached to the ends of deformed reinforcing bars 1 and 2 that are to be connected to each other. , 4a in the opposite direction.
a, 5b on the left and right sides, and these male threaded parts 5
Torque control shaft 5c is located in the center between a and 5b.
A hexagonal tightening ring is attached to the outer periphery of the central part of the bolt rod 5 with the torque control shaft 5c inserted into the bearing groove 6a formed in the axial direction of the inner peripheral surface. 6, the bolt rod 5 is rotated by the tightening ring 6, and the bolt rod 5 is rotated to the left of the bolt rod 5. Male threaded part 5a on the right side,
5b is screwed into the female threaded portions 3a, 4a of the joint tubes 3, 4 to connect the deformed reinforcing bars 1, 2, and if an excessive tightening torque is applied to the bolt rod 5, the torque control shaft 5c may break. , connection fittings for deformed reinforcing bars in which the tightening ring 6 can be reversed are known (Japanese Patent Application No. 53-35031, Japanese Patent Application Laid-open No. 126663/1983).

考案が解決しようとする問題点第５〜７図に示した従来の異形鉄筋の接続金具
においてはボルト杆５の外径D₁が締付リング６
の内径D₂よりも小径であつたために、ボルト杆
５の軸方向に沿つて締付リング６が自由に移動
し、締付リング６がボルト杆５から外れ落ちてし
まうという問題点があつた。Problems to be Solved by the Invention In the conventional connection fittings for deformed reinforcing bars shown in Figs. 5 to 7, the outer diameter D ₁ of the bolt rod 5 is
Because the diameter was smaller than the inner diameter _D2 of the bolt rod 5, the tightening ring 6 could move freely along the axial direction of the bolt rod 5, causing the problem that the tightening ring 6 would come off the bolt rod 5 and fall off. .

問題点を解決するための手段ボルト杆の左、右側部の雄ネジ部の外径を締付
リングの内径よりも大径に形成し、これら左、右
側部の雄ネジ部間内において、締付リングを軸方
向に移動可能にした。Measures to solve the problem: The outer diameter of the male threads on the left and right sides of the bolt rod is made larger than the inner diameter of the tightening ring. The attached ring can be moved in the axial direction.

作用左、右側部の雄ネジ部によつて締付リングのボ
ルト杆からの脱落を阻止する。Function: The male threads on the left and right sides prevent the tightening ring from falling off the bolt rod.

実施例次に本考案の実施例を第１〜４図を参照して説
明する。５と６が本考案の接続金具７を構成する
ボルト杆と締付リングである。ボルト杆５の左、
右側部の雄ネジ部５ａ，５ｂの外径D₁は締付リ
ング６の内径D₂よりも大径に形成されていて、
これら雄ネジ部５ａ，５ｂ間で締付リング６を軸
方向に移動させることができるようになつてい
る。実施例において雄ネジ部５ａ，５ｂ間の距離
Ｌは締付リング６の幅W₁の略２倍の大きさに形
成されていて、締付リング６を左右に最大限移動
させても、雄ネジ部５ａ，５ｂ間の略中央に設け
たトルクコントロール軸５ｃは、締付リング６の
内周面軸方向に設けた軸受溝６ａから逸脱しない
ようになつている。Embodiments Next, embodiments of the present invention will be described with reference to FIGS. 1 to 4. 5 and 6 are bolt rods and tightening rings that constitute the connecting fitting 7 of the present invention. Left of bolt rod 5,
The outer diameter _D1 of the male threaded parts 5a and 5b on the right side is larger than the inner diameter _D2 of the tightening ring 6,
The tightening ring 6 can be moved in the axial direction between these male threaded portions 5a and 5b. In the embodiment, the distance L between the male threaded portions 5a and 5b is approximately twice the width _W1 of the tightening ring 6, so that even if the tightening ring 6 is moved to the left or right as much as possible, the male The torque control shaft 5c provided approximately in the center between the threaded portions 5a and 5b is configured not to deviate from a bearing groove 6a provided in the axial direction of the inner peripheral surface of the tightening ring 6.

従つて締付リング６がボルト杆から外れ落ちる
のを防止できるのは勿論のこと、トルクコントロ
ール軸５ｃが軸受溝６ａから逸脱するのも防止で
き、締付作業性の向上を図ることができるのであ
る。なお雄ネジ部５ａ，５ｂ間の距離Ｌはトルク
コントロール軸５ｃの幅（径）W₂を参酌して決
定され、該軸５ｃの幅W₂が大となればなるほど、
雄ネジ部５ａ，５ｂ間の距離Ｌを大きくすること
ができ、トルクコントロール軸５ｃの幅W₂が締
付リング６の幅W₁と略等しい場合には距離Ｌを
締付リング６の幅W₁の略３倍の大きさにしても
トルクコントロール軸５ｃの軸受溝６ａからの逸
脱を防止できる。また雄ネジ部５ａ，５ｂ間への
締付リング６の取付けは、中央部にトルクコント
ロール軸５ｃを突設したボルト杆５の素材（PC
鋼棒）に、これよりもやや大径の締付リング６を
予め嵌合しておき、しかるのち雄ネジ部５ａ，５
ｂを転造することにより行うこともでき、この場
合は、第４図に示したように締付リング６の左右
両側に、雄ネジ部５ａ，５ｂの外径D₁よりもや
や大径の雄ネジ部受用の座ぐり部６ｂ，６ｃを形
成し、これら座ぐり部６ｂ，６ｃによつて雄ネジ
部５ａ，５ｂを締付リング６の左右側部いつぱい
まで転造可能にし、かつ締付けの際における締付
リング６の位置ズレを補正できるようにしてもよ
い。 Therefore, not only can the tightening ring 6 be prevented from coming off and falling off the bolt rod, but also the torque control shaft 5c can be prevented from coming off from the bearing groove 6a, and the tightening work efficiency can be improved. be. Note that the distance L between the male threaded portions 5a and 5b is determined by taking into consideration the width (diameter) _W2 of the torque control shaft 5c, and the larger the width _W2 of the shaft 5c, the more
The distance L between the male screw parts 5a and 5b can be increased, and when the width _W2 of the torque control shaft 5c is approximately equal to the width _W1 of the tightening ring 6, the distance L can be set to the width W of the tightening ring 6. Even if the size is approximately three times larger than ₁ , it is possible to prevent the torque control shaft 5c from deviating from the bearing groove 6a. The tightening ring 6 is installed between the male threaded portions 5a and 5b using the material (PC) of the bolt rod 5 with the torque control shaft 5c protruding from the center.
A tightening ring 6 of a slightly larger diameter than this is fitted in advance to the steel bar), and then the male threaded portions 5a, 5 are fitted.
This can also be done by rolling b. In this case, as shown in _FIG . Counterbore portions 6b and 6c are formed for receiving the male threaded portions, and these counterbore portions 6b and 6c enable the male threaded portions 5a and 5b to be rolled up to the full extent on the left and right sides of the tightening ring 6, and are tightened. It may also be possible to correct the positional deviation of the tightening ring 6 at this time.

なお従来と同一部分には同一符号を付して重複
する説明を省略する。 Note that parts that are the same as those in the prior art are designated by the same reference numerals and redundant explanations will be omitted.

考案の効果ボルト杆と締付リングを一体化し、一方部材の
紛失を防止すると共に使用時におけるボルト杆か
らの締付リングの脱落を防止し、締付作業能率の
向上を図ることができる。Effects of the invention By integrating the bolt rod and the tightening ring, it is possible to prevent one member from being lost and to prevent the tightening ring from falling off from the bolt rod during use, thereby improving the efficiency of tightening work.

[Brief explanation of drawings]

第１図は本考案の接続金具と接手管の断面図、
第２図は接続金具の拡大断面図、第３図は第２図
の−線断面図、第４図は他の実施例の断面
図、第５図は従来の接続金具を使用して異形鉄筋
を接続した状態の断面図、第６図は第５図の−
線断面図、第７図は第５図の分解断面図であ
る。１，２……異形鉄筋、３，４……接手管、３
ａ，４ａ……雌ネジ部、５……ボルト杆、５ａ，
５ｂ……雄ネジ部、５ｃ……トルクコントロール
軸、６……締付リング、６ａ……軸受溝、７……
接続金具。 Figure 1 is a sectional view of the connecting fitting and joint pipe of the present invention.
Figure 2 is an enlarged cross-sectional view of the connecting fitting, Figure 3 is a cross-sectional view taken along the - line in Figure 2, Figure 4 is a cross-sectional view of another embodiment, and Figure 5 is a deformed reinforcing bar using the conventional connecting fitting. Fig. 6 is a cross-sectional view of the state in which the - of Fig. 5 is connected.
7 is an exploded sectional view of FIG. 5. 1, 2... Deformed reinforcing bar, 3, 4... Joint pipe, 3
a, 4a...Female thread part, 5...Bolt rod, 5a,
5b...Male thread part, 5c...Torque control shaft, 6...Tightening ring, 6a...Bearing groove, 7...
Connection fittings.

Claims

[Scope of utility model registration request]

A male threaded portion 5a in the opposite direction is screwed into female threaded portions 3a, 4a in the opposite direction provided in the joint tubes 3, 4, respectively, which are attached to the ends of the deformed reinforcing bars 1, 2 that are to be connected to each other. , 5b on the left and right sides,
A bolt rod 5 with a torque control shaft 5c protruding from the approximate center between these male threaded portions 5a and 5b, and a bolt with the torque control shaft 5c inserted into a bearing groove 6a formed in the axial direction of the inner circumferential surface. Rod 5
The bolt rod 5 is rotated by the tightening ring 6, and the male threaded portions 5a, 5a, and 5a on the left and right sides of the bolt rod 5 are rotated by the tightening ring 6, which is attached to the outer periphery of the central part of the bolt rod 5.
5b is screwed into the female threaded portions 3a, 4a of the joint pipes 3, 4 to connect the deformed reinforcing bars 1, 2, and when an excessive tightening torque is applied to the tightening ring 6, the torque control shaft 5c In a connecting fitting for deformed reinforcing bars that is designed to break, the outer diameter of the male threaded portions 5a, 5b of the bolt rod 5 is formed to be larger than the inner diameter of the tightening ring 6, and these male threaded portions 5a, 5b are
A connecting fitting for deformed reinforcing bars, characterized in that a tightening ring 6 is movable in the axial direction between the fittings.