JP2926307B2 - Connection of threaded joints and threaded joints - Google Patents
Connection of threaded joints and threaded jointsInfo
- Publication number
- JP2926307B2 JP2926307B2 JP7097095A JP7097095A JP2926307B2 JP 2926307 B2 JP2926307 B2 JP 2926307B2 JP 7097095 A JP7097095 A JP 7097095A JP 7097095 A JP7097095 A JP 7097095A JP 2926307 B2 JP2926307 B2 JP 2926307B2
- Authority
- JP
- Japan
- Prior art keywords
- coupler
- cast
- threaded
- taper
- grout material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Reinforcement Elements For Buildings (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はねじ節鉄筋の鋳物製継手
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint made of a threaded steel bar made of cast iron.
【０００２】[0002]
【従来の技術】２本のねじ節鉄筋を直線状に接続する継
手として、例えば図７に示すように、ねじ節鉄筋５１，
５１を接続した鋳物製カプラ−５２の両端面５３，５３
にねじ節鉄筋５１，５１に螺合された鋳物製ロックナッ
ト５４，５４の端面５５，５５を当接し、さらにカプラ
−５２の中間に形成されたグラウト材圧入用の注入孔５
６からグラウト材を圧入することによって、ねじ節鉄筋
５１，５１を直線状に接続したものが提案されている。2. Description of the Related Art As a joint for connecting two threaded reinforcing bars linearly, for example, as shown in FIG.
51, both end faces 53, 53 of a cast coupler 52
The end faces 55, 55 of the cast lock nuts 54, 54 screwed into the threaded rebars 51, 51 are brought into contact with the grout material injection holes 5 formed in the middle of the coupler 52.
A method in which a grout material is press-fitted from No. 6 to connect the threaded reinforcing bars 51, 51 in a straight line has been proposed.
【０００３】[0003]
【発明が解決しようとする課題】ねじ節鉄筋を直線状に
接続するカプラ−５２およびロックナット５４が鋳造品
では、ロックナット５４用の木型は長さが短いので縦込
めとすることによって木型端面の木型抜き取り用勾配が
不要となるが、カプラ−５２用の木型は長さがかなり長
くなるので横込めとなり、図８に示すように見切り線６
２のところで分割する二つ割り木型６１となるから、端
面６３に木型抜き取り用勾配が必要となる。When the coupler 52 and the lock nut 54 for connecting the threaded rebars in a straight line are cast products, the wooden mold for the lock nut 54 is short in length, so that it can be vertically inserted. Although the slope for removing the mold from the mold end face is not required, the mold for the coupler 52 is considerably long in length, so that it can be traversed, and as shown in FIG.
Since the two-piece mold 61 is divided at the point 2, the end face 63 needs a slope for removing the mold.
【０００４】このため、鋳物製カプラ−の両端面は斜面
となり、鋳物製カプラ−の傾斜端面と鋳物製ロックナッ
トの傾斜のない端面との当接により当接端面間に隙間が
できる。また、鋳物製カプラ−の端面と鋳物製ロックナ
ットの端面にはその雌ねじとこれに螺合するねじ節鉄筋
の雄ねじとの間の隙間があらわれる。従って、カプラ−
５２の注入孔５６からグラウト材を圧入すると、当接し
たカプラ−５２とロックナット５４の端面間からグラウ
ト材が溢出してグラウト材圧入時間が長引き、しかもグ
ラウト材が届かないところに空所ができこの箇所が腐蝕
して強度を低下させる等の問題があった。[0004] For this reason, both end faces of the cast coupler are sloped, and a gap is formed between the contact end faces due to the contact between the inclined end face of the cast coupler and the non-inclined end face of the cast lock nut. In addition, a gap appears between the female screw and the male screw of the threaded bar screwed to the end face of the cast coupler and the end face of the cast lock nut. Therefore, the coupler
When the grout material is press-fitted from the injection hole 56 of the grout 52, the grout material overflows from between the end faces of the abutted coupler 52 and the lock nut 54, so that the grout material press-fitting time is prolonged, and a void is formed where the grout material does not reach. There was a problem that the resulting portion was corroded and the strength was reduced.
【０００５】そこで、従来では図７に示すようにカプラ
−５２の端面５３，５３とロックナット５４の端面５
５，５５とが隙間なしで当接できるように両者の端面を
切削加工していたから、鋳物製カプラ−および鋳物製ロ
ックナットの製作費が高騰する不都合があった。Therefore, conventionally, as shown in FIG. 7, the end faces 53 and 53 of the coupler 52 and the end faces 5 of the lock nut 54 are formed.
Since both end faces are cut so that they can contact with each other without any gap, there is a problem that the production cost of the cast coupler and the cast lock nut increases.
【０００６】また、ねじ節鉄筋を縦方向に接続したカプ
ラ−の注入孔５６よりグラウト材を圧入する作業では、
グラウト材の下方への流入量は重力に逆らうこととなる
グラウト材の上方への流入量を上回り、しかも注入孔５
６はカプラ−の中間にあるので、カプラ−の上下両端に
当接する両ロックナットからのグラウト材溢出時期にか
なりのずれが生じる。このため、グラウト材圧入時間が
長くなり、また、グラウト材消費量が多くなる等の不都
合があった。Further, in the operation of press-fitting the grout material from the injection hole 56 of the coupler in which the threaded bar is vertically connected,
The amount of the grout material flowing downward exceeds the amount of the grout material flowing upward, which is against the gravity.
Since 6 is in the middle of the coupler, there is a considerable shift in the timing of the grout material overflowing from both lock nuts abutting on the upper and lower ends of the coupler. For this reason, there have been inconveniences such as a longer grout material press-in time and an increase in grout material consumption.
【０００７】本発明は前記の点に鑑みてなされたもの
で、鋳物製のカプラ−及びロックナットの端面切削加工
が不要となり、しかも縦方向に接続されたねじ節鉄筋の
接続箇所に圧入するグラウト材の圧入時間の短縮とグラ
ウト材消費量の節減を可能にしたねじ節鉄筋の継手およ
びねじ節鉄筋の接続法を提供することを目的としてい
る。The present invention has been made in view of the above points, and eliminates the need for cutting end faces of cast couplers and lock nuts, and furthermore, grouts which are press-fitted into connection portions of threaded steel bars connected in the vertical direction. It is an object of the present invention to provide a joint of a threaded steel bar and a method of connecting a screwed steel bar, which can shorten the press-in time of the material and reduce the consumption of the grout material.
【０００８】[0008]
【課題を解決するための手段および作用】本発明に係る
ねじ節鉄筋の継手は、筒体部の内面に接続すべき２本の
ねじ節鉄筋の雄ねじと同一ピッチの雌ねじを形成すると
共に、中間にグラウト材圧入用の注入孔を備え、且つ筒
体部の両端面における雌ねじよりも外側の周面にテ−パ
部を形成した１個の鋳物製カプラ−と、ねじ節鉄筋に螺
合され且つ一端の内周側に前記カプラ−のテ−パ部に当
接するテ−パ孔を形成した２個の鋳物製ロックナットか
らなるもので、カプラ−のテ−パ部はカプラ−用木型の
木型抜き取り用勾配よりもさらに傾いており、ロックナ
ットのテ−パ孔は縦込めとなるロックナット用木型の一
端内周側に設けたテ−パ孔で形成している。In the joint of the threaded bar according to the present invention, a female screw having the same pitch as the male thread of the two threaded bars to be connected to the inner surface of the cylindrical portion is formed, and an intermediate thread is formed. A casting coupler having an injection hole for press-fitting a grout material and having a tapered portion formed on the outer peripheral surface of the cylindrical body portion on both sides of the female screw, and screwed into a threaded rebar. The locker comprises two cast lock nuts having a tapered hole formed at one end on the inner peripheral side to be in contact with the tapered portion of the coupler, and the tapered portion of the coupler is a wooden mold for the coupler. The taper hole of the lock nut is formed by a taper hole provided on the inner peripheral side of one end of the lock nut wooden mold which can be vertically inserted.
【０００９】また、ねじ節鉄筋の継手として、カプラ−
のテ−パ部は筒体部の端面全体に形成することによって
カプラ−用木型の木型抜き取り用勾配を兼ね、これに当
接するロックナットのテ−パ孔はそのテ−パ角度をテ−
パ部のそれよりも小さくするか、または等しくしたもの
を用いてもよい。[0009] Further, a coupler is used as a joint of the thread-bar rebar.
By forming the taper portion on the entire end face of the cylindrical portion, the taper portion also serves as a wooden mold extraction gradient for the coupler, and the taper hole of the lock nut which abuts the taper angle adjusts the taper angle. −
A smaller or equal one may be used.
【００１０】いま、２本のねじ節鉄筋を鋳物製カプラ−
で直線状に接続し、この鋳物製カプラ−の両端面におけ
る雌ねじよりも外側の周面に形成されたテ−パ部に各ね
じ節鉄筋に螺合された鋳物製ロックナットのテ−パ孔を
当接すると、テ−パ部とテ−パ孔のテ−パ角度を違えて
いるときにはテ−パ孔の外周端縁がテ−パ部に当接する
か、またはテ−パ部の内周端縁がテ−パ孔に当接し、テ
−パ部とテ−パ孔のいずれか一方に環状突起を突設して
いるときには、環状突起を介してテ−パ部とテ−パ孔と
が当接し、また、テ−パ部とテ−パ孔のテ−パ角度が等
しいときには両者はテ−パ面で当接する。そして、テ−
パ部とテ−パ孔とが当接する箇所は螺合する雌ねじと雄
ねじがあらわれないので、当接箇所には隙間ができな
い。[0010] Now, two screw joint rebars are cast couplers
And a taper hole of a cast lock nut screwed into each threaded rebar in a taper portion formed on a peripheral surface outside the female screw at both end faces of the cast coupler. When the taper angle between the taper portion and the taper hole is different, the outer peripheral edge of the taper hole contacts the taper portion, or the inner periphery of the taper portion. When the edge touches the taper hole and an annular projection protrudes from one of the taper portion and the taper hole, the taper portion and the taper hole are connected via the annular protrusion. When the taper portion and the taper hole have the same taper angle, they abut on the taper surface. And,
Since the female screw and the male screw to be screwed do not appear at the place where the taper portion and the taper hole contact, there is no gap at the contact position.
【００１１】また、２本のねじ節鉄筋を接続したカプラ
−の端面全体に形成されたテ−パ部に、各ねじ節鉄筋に
螺合され且つテ−パ角度が前記テ−パ部に比べて小さい
テ−パ孔を有する鋳物製ロックナットをそのテ−パ孔で
当接すると、テ−パ孔の外周端縁がテ−パ部に当接し、
またテ−パ角度が前記テ−パ部と等しいテ−パ孔で当接
すると、両者はテ−パ面で当接するので、いずれの場合
も当接箇所に隙間ができない。Further, a taper portion formed on the entire end face of the coupler connecting the two screw-bar rebars is screwed to each screw-bar rebar and the taper angle is smaller than that of the taper portion. When a cast lock nut having a small taper hole is brought into contact with the taper hole, the outer peripheral edge of the taper hole comes into contact with the taper portion,
If the taper angle is the same as that of the taper portion, the two tapered surfaces contact each other, so that there is no gap between the tapered portions in any case.
【００１２】従って、次に行う鋳物製カプラ−の注入孔
からグラウト材を圧入する作業ではカプラ−とロックナ
ットの当接箇所からグラウト材の溢出がなくなり、ねじ
節鉄筋を的確に接続することができる。Therefore, in the next operation of press-fitting the grout material from the injection hole of the cast coupler, the grout material does not overflow from the contact point between the coupler and the lock nut, so that the screw joint rebar can be accurately connected. it can.
【００１３】ねじ節鉄筋を縦方向に接続する鋳物製カプ
ラ−のグラウト材圧入用の注入孔は筒体部の中間よりも
上方にとっている。このため、重力に逆らって供給しな
ければならない上方へのグラウト材必要供給量は下方へ
のグラウト材必要供給量よりも少なくてよい。従って、
鋳物製カプラ−両端に当接する上下両ロックナットから
のグラウト材溢出の時期のずれが小さくなるのでグラウ
ト材消費量を節減でき、また、ねじ節鉄筋接続箇所への
グラウト材圧入時間を短縮できる。The injection hole for press-fitting the grout material of the cast coupler for connecting the screw-bar rebar in the vertical direction is located above the middle of the cylindrical portion. For this reason, the required amount of grout material supplied upward which must be supplied against gravity may be smaller than the required amount of grout material supplied downward. Therefore,
Since the difference in the timing of the overflow of the grout material from the upper and lower lock nuts abutting on both ends of the cast coupler is reduced, the consumption of the grout material can be reduced, and the time for press-fitting the grout material into the screw joint rebar connection portion can be shortened.
【００１４】尚、鋳物製カプラ−の両雌ねじは、接続す
べき２本のねじ節鉄筋の雄ねじが等径では等径、異径で
は異径である。The two female threads of the cast coupler have the same diameter when the male threads of the two threaded reinforcing bars to be connected have the same diameter, and have the same diameter when they have different diameters.
【００１５】カプラ−およびロックナットは鋳鉄製また
は鋳鋼製で、鋳鉄の場合は特に球状黒鉛鋳鉄が好まし
い。The coupler and the lock nut are made of cast iron or cast steel. In the case of cast iron, spheroidal graphite cast iron is particularly preferred.
【００１６】[0016]
【実 施 例】以下本発明を図示の実施例に基づいて説
明する。図１および図２において、１は水平配置の２本
のねじ節鉄筋２，２を直線状に接続した継手で、１個の
鋳物製カプラ−３と２個の鋳物製ロックナット４，４か
らなる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIGS. 1 and 2, reference numeral 1 denotes a joint in which two threaded reinforcing bars 2, 2 arranged in a horizontal line are connected in a straight line, from one cast coupler-3 and two cast lock nuts 4, 4. Become.
【００１７】鋳物製カプラ−３は、筒体部５の中間外周
部を６角形状となし、これより若干小径の両側の外周部
に複数の凹部１３を形成してコンクリ−トとの接触面の
拡大を図り、筒体部５の内面にはねじ節鉄筋２，２の雄
ねじ６，６と同一ピッチの雌ねじ７，７を螺設し、中間
にグラウト材圧入用の注入孔８とこれに連通する環溝１
１を設け、さらに筒体部５の両端面における雌ねじ７よ
りも外側の周面にテ−パ部９，９を形成してなるもの
で、鋳鉄製または鋳鋼製である。尚、カプラ−３用の木
型は二つ割りの横込め形式故、木型の両端面には木型抜
き取り用勾配を付している。また、木型のテ−パ部９相
当箇所は、木型端面の雌ねじ相当箇所よりも外側の周部
であり、木型抜き取り用勾配からさらに傾けている。The caster coupler 3 has a hexagonal outer peripheral portion of the cylindrical portion 5 and a plurality of concave portions 13 formed on both outer peripheral portions slightly smaller in diameter than the hexagonal shape to form a contact surface with the concrete. In the inner surface of the cylindrical body 5, internal threads 7, 7 having the same pitch as the external threads 6, 6 of the thread-bar rebars 2, 2 are screwed, and an injection hole 8 for grout material press-fitting is provided in the middle. Ring groove 1 communicating
1, and taper portions 9 and 9 are formed on the outer peripheral surface of the cylindrical body portion 5 at both end surfaces outside the female screw 7 and are made of cast iron or cast steel. Since the wooden mold for the coupler-3 is a split-in horizontal type, both ends of the wooden mold are provided with a wooden mold extracting gradient. The portion corresponding to the taper portion 9 of the wooden die is a peripheral portion outside the portion corresponding to the female screw on the end surface of the wooden die, and is further inclined from the gradient for extracting the wooden die.
【００１８】ロックナット４は、外周部がカプラ−３の
中間外周部と同径の６角形で内面にねじ節鉄筋２の雄ね
じ６と同一ピッチの雌ねじ７を有し、且つ一端の内周側
にテ−パ角度がカプラ−３のテ−パ部９のテ−パ角度よ
り小さいテ−パ孔１０を形成してなるもので、鋳鉄製ま
たは鋳鋼製である。このものは長さが短いので、木型は
縦込めとし、その一端内周側に設けたテ−パ孔でロック
ナット４のテ−パ孔１０を形成するようにしている。The lock nut 4 has a hexagonal outer peripheral portion having the same diameter as the intermediate outer peripheral portion of the coupler 3, has a female screw 7 having the same pitch as the male screw 6 of the thread-bar rebar 2 on the inner surface, and has an inner circumferential side at one end. The taper hole 10 has a taper angle smaller than the taper angle of the taper portion 9 of the coupler 3, and is made of cast iron or cast steel. Since this is short in length, the wooden mold is vertically inserted, and a taper hole 10 formed in the inner peripheral side of one end thereof forms a taper hole 10 of the lock nut 4.
【００１９】ロックナット４のテ−パ孔１０とカプラ−
３のテ−パ部９との当接態様は、テ−パ部９に比べてテ
−パ孔１０のテ−パ角度が小さい場合には、テ−パ孔１
０の外周端縁でテ−パ部９に当接し（図４）、逆にテ−
パ孔１０のテ−パ角度が大きい場合には、テ−パ部９の
内周端縁でテ−パ孔１０に当接し、テ−パ部９とテ−パ
孔１０のテ−パ角度が同じではテ−パ面で当接する。テ
−パ部９は雌ねじ７よりも外側に形成されているので、
両者の当接箇所には雌ねじ７およびねじ節鉄筋２の雄ね
じ６はあらわれない。また、テ−パ部９とテ−パ孔１０
のいずれか一方に環状突起１４を突設して（図５ではテ
−パ孔１０に突設）、環状突起１４を介してテ−パ孔１
０とテ−パ部９を当接するようにしてもよい。Tapered hole 10 of lock nut 4 and coupler
When the taper angle of the taper hole 10 is smaller than that of the taper portion 9, the taper portion 1 is in contact with the taper portion 9.
0 abuts on the taper portion 9 at the outer peripheral edge (FIG. 4).
When the taper angle of the taper hole 10 is large, the inner peripheral edge of the taper portion 9 contacts the taper hole 10 and the taper angle between the taper portion 9 and the taper hole 10. However, if they are the same, they abut on the taper surface. Since the taper portion 9 is formed outside the female screw 7,
The female screw 7 and the male screw 6 of the screw bar 2 do not appear at the abutting positions of the two. Further, a taper portion 9 and a taper hole 10 are provided.
An annular projection 14 is protruded from either one of the tapered holes (projected from the tapered hole 10 in FIG. 5).
0 and the taper section 9 may be in contact with each other.
【００２０】また、鋳物製カプラ−３のテ−パ部９は、
端面の全面に形成してカプラ−用木型の木型抜き取り用
勾配を兼ねるようにしてもよい。この場合には、鋳物製
ロックナットの一端面に形成するテ−パ孔１０は、その
テ−パ角度をテ−パ部９のそれよりも小さくするか、ま
たは等しくすることによって、テ−パ部９とテ−パ孔１
０の当接箇所から隙間をなくすことができる。The taper portion 9 of the cast coupler-3 is
It may be formed on the entire end face so as to also serve as a wooden mold extraction gradient for couplers. In this case, the taper hole 10 formed in one end face of the cast lock nut is formed by making the taper angle smaller than or equal to that of the taper portion 9. Part 9 and taper hole 1
It is possible to eliminate a gap from the zero contact point.
【００２１】前記ねじ節鉄筋２は、図６に示すように横
断面がほぼ小判状で上下の山部にそれぞれ雄ねじ６を形
成している。As shown in FIG. 6, the thread-bar rebar 2 has a substantially oval cross section and has male threads 6 at upper and lower ridges.
【００２２】図３は、１個の鋳物製カプラ−３と２個の
鋳物製ロックナット４，４で２本のねじ節鉄筋２，２を
縦方向に接続した状態の一部切欠き縦断面図を示す。こ
れに使用する鋳物製カプラ−３のグラウト材圧入用の注
入孔８は、筒体部５の中間よりも上方で、且つ鋳物製カ
プラ−３に当接した上下両ロックナット４，４からのグ
ラウト材溢出の時期がほぼ等しくなる位置に設けてい
る。FIG. 3 is a partially cut-away longitudinal cross-sectional view showing a state in which two threaded reinforcing bars 2, 2 are vertically connected by one cast coupler-3 and two cast lock nuts 4, 4. FIG. The figure is shown. The injection hole 8 for press-fitting the grout material of the casting coupler 3 used for this is located above the middle of the cylindrical body portion 5 and from the upper and lower lock nuts 4, 4 in contact with the casting coupler 3. It is provided at a position where the timing of the overflow of the grout material is almost equal.
【００２３】尚、接続する２本のねじ節鉄筋２，２は、
図１〜図３に示す実施例では等径であるが、異径のねじ
節鉄筋を接続するには、異径のねじ節鉄筋の雄ねじと螺
合する異径の雌ねじを螺設した鋳物製カプラ−を用いて
いる。[0023] The two threaded reinforcing bars 2, 2 to be connected are:
Although the embodiment shown in FIGS. 1 to 3 has the same diameter, it is possible to connect the threaded rebars of different diameters by using a casting made of a female thread of different diameter screwed with the male thread of the threaded rebar of different diameter. A coupler is used.
【００２４】[0024]
【発明の効果】以上説明したように本発明によれば、２
本のねじ節鉄筋を接続した鋳物製カプラ−の両端面に形
成したテ−パ部にねじ節鉄筋に螺合された鋳物製ロック
ナットのテ−パ孔を当接することによって、カプラ−と
ロックナットの当接端面間からグラウト材の溢出をなく
しているので、鋳物製カプラ−および鋳物製ロックナッ
トの端面切削加工が不要となり、安価な鋳物製継手を提
供することができる。As described above, according to the present invention, 2
The tapered holes formed on both end surfaces of the cast coupler to which the threaded reinforcing bars are connected are brought into contact with the tapered holes of the cast lock nut screwed into the threaded reinforcing bars, thereby locking the coupler. Since the overflow of the grout material is eliminated from between the abutting end faces of the nut, it is not necessary to cut the end faces of the cast coupler and the cast lock nut, and an inexpensive cast joint can be provided.
【００２５】２本のねじ節鉄筋を縦方向に接続するカプ
ラ−ではグラウト材圧入用の注入孔を筒体部の中間より
上方にとっているので、ねじ節鉄筋接続箇所に圧入する
グラウト材の圧入時間の短縮とグラウト材消費量の節減
を図ることができる。In the coupler connecting the two threaded reinforcing bars in the longitudinal direction, the injection hole for the grout material press-fitting is located above the middle of the cylindrical portion, so that the press-fitting time of the grout material for press-fitting into the screw-joint rebar connecting point is set. And grout material consumption can be reduced.
【図１】本発明の実施例で、２本のねじ節鉄筋を横方向
に接続した継手の平面図である。FIG. 1 is a plan view of a joint in which two threaded bars are laterally connected in an embodiment of the present invention.
【図２】図１におけるＢ−Ｂ線断面図である。FIG. 2 is a sectional view taken along line BB in FIG.
【図３】本発明の実施例で、２本のねじ節鉄筋を縦方向
に接続した継手の一部切欠き縦断面図である。FIG. 3 is a partially cutaway longitudinal sectional view of a joint in which two threaded bars are connected in the longitudinal direction in the embodiment of the present invention.
【図４】鋳物製カプラ−のテ−パ部と鋳物製ロックナッ
トのテ−パ孔との当接箇所の拡大断面図である。FIG. 4 is an enlarged sectional view of a contact portion between a tapered portion of a cast coupler and a tapered hole of a cast lock nut.
【図５】鋳物製ロックナットのテ−パ孔に突設した環状
突起と鋳物製カプラ−のテ−パ部との当接箇所の拡大断
面図である。FIG. 5 is an enlarged cross-sectional view of a contact portion between an annular projection protruding from a tapered hole of a cast lock nut and a tapered portion of a cast coupler.
【図６】図１におけるＡ−Ａ線断面図である。FIG. 6 is a sectional view taken along line AA in FIG. 1;
【図７】従来品の縦断面図である。FIG. 7 is a longitudinal sectional view of a conventional product.
【図８】鋳物製カプラ−用木型の説明図である。FIG. 8 is an explanatory view of a wooden mold for a coupler made of casting.
１ 継手 ２ ねじ節鉄筋 ３ 鋳物製カプラ− ４ 鋳物製ロックナット ５ 筒体部 ６ 雄ねじ ７ 雌ねじ ８ グラウト材圧入用の注入孔 ９ テ−パ部 １０ テ−パ孔 １４ 環状突起 REFERENCE SIGNS LIST 1 joint 2 threaded reinforcing bar 3 cast coupler 4 cast lock nut 5 cylindrical body 6 male screw 7 female screw 8 grout material press-fitting hole 9 taper part 10 taper hole 14 annular projection
フロントページの続き (72)発明者 吉田 順一 大阪府枚方市磯島南町13番１号 日本カ タン株式会社内 (72)発明者 山中 幸安 大阪府枚方市磯島南町13番１号 日本カ タン株式会社内 (58)調査した分野(Int.Cl.6，ＤＢ名) E04C 5/18 102 E04G 21/12 105 Continued on the front page (72) Inventor Junichi Yoshida 13-1 Isojima Minamicho, Hirakata City, Osaka Prefecture Inside Nippon Katani Co., Ltd. (72) Inventor Koyasu Yamanaka 131-1 Isojima Minamimachi, Hirakata City, Osaka Prefecture Nippon Katani Co., Ltd. (58) Field surveyed (Int. Cl. 6 , DB name) E04C 5/18 102 E04G 21/12 105
Claims (10)
鉄筋の雄ねじと同一ピッチの雌ねじを形成すると共に、
中間にグラウト材圧入用の注入孔を備え、且つ筒体部の
両端面における雌ねじよりも外側の周面にテ−パ部を形
成した１個の鋳物製カプラ−と、ねじ節鉄筋に螺合され
且つ一端の内周側に前記カプラ−のテ−パ部に当接する
テ−パ孔を形成した２個の鋳物製ロックナットからなる
ねじ節鉄筋の継手。1. A female screw having the same pitch as a male screw of two threaded reinforcing bars to be connected to an inner surface of a cylindrical body,
A casting coupler having an injection hole for grout material press-fitting in the middle and having a taper portion formed on the outer peripheral surface of the cylindrical body at both end surfaces outside the female screw; A threaded joint made of two cast lock nuts, each of which has a tapered hole formed in the inner peripheral side of one end and abutting against the tapered portion of the coupler.
鉄筋の雄ねじと同一ピッチの雌ねじを形成すると共に、
中間にグラウト材圧入用の注入孔を備え、且つ筒体部の
両端面の全面にテ−パ部を形成した１個の鋳物製カプラ
−と、ねじ節鉄筋に螺合され且つ一端面にテ−パ角度が
前記カプラ−のテ−パ部に比べて小さいかまたは等しい
テ−パ孔を形成した２個の鋳物製ロックナットからなる
ねじ節鉄筋の継手。2. A female screw having the same pitch as the male screw of the two threaded reinforcing bars to be connected to the inner surface of the cylindrical portion,
A casting coupler having an injection hole for press-fitting grout material in the middle and having tapered portions formed on the entire end surfaces of the cylindrical body portion, and a coupler which is screwed to the threaded rebar and has a tapered end surface. A threaded joint made of two cast lock nuts having a taper hole having a taper angle smaller or equal to the taper portion of the coupler;
入孔を筒体部の中間から片方へ寄った位置に設けた請求
項１または２記載のねじ節鉄筋の継手。3. The joint according to claim 1, wherein the injection hole for press-fitting the grout material of the casting coupler is provided at a position closer to one side from the center of the cylindrical portion.
請求項１，２または３記載のねじ節鉄筋の継手。4. The joint according to claim 1, 2 or 3, wherein both internal threads of the cast coupler have the same diameter.
請求項１，２または３記載のねじ節鉄筋の継手。5. The joint according to claim 1, wherein the internal threads of the cast coupler have different diameters.
クナットのテ−パ孔のいずれか一方に環状突起を突設し
た請求項１記載のねじ節鉄筋の継手。6. The threaded joint according to claim 1, wherein an annular projection protrudes from one of a tapered portion of the cast coupler and a tapered hole of the cast lock nut.
たは２記載のねじ節鉄筋の継手。7. The joint according to claim 1, wherein the casting is cast iron or cast steel.
線状に接続し、鋳物製カプラ−の両端面における雌ねじ
よりも外側の周面に形成されたテ−パ部に各ねじ節鉄筋
に螺合された鋳物製ロックナットのテ−パ孔を当接する
と、鋳物製カプラ−の注入孔からグラウト材を圧入する
ことを特徴とするねじ節鉄筋の接続法。8. A casting coupler which connects two threaded reinforcing bars in a straight line, and a tapered portion formed on the outer peripheral surface of each end face of the caster coupler with respect to the female screw to each threaded joint. A method of connecting a threaded reinforcing bar, wherein a grout material is press-fitted from an injection hole of a cast coupler when a tapered hole of a cast lock nut screwed into a reinforcing bar abuts.
線状に接続し、鋳物製カプラ−の両端面の全面に形成さ
れたテ−パ部に、各ねじ節鉄筋に螺合された鋳物製ロッ
クナットの一端面に形成されたテ−パ角度が前記テ−パ
部に比べて小さいかまたは等しいテ−パ孔を当接する
と、鋳物製カプラ−の注入孔からグラウト材を圧入する
ことを特徴とするねじ節鉄筋の接続法。9. A two-piece threaded rebar is connected in a straight line with a casting coupler, and each of the threaded rebars is screwed into a taper portion formed on the entire surface of both end faces of the casting coupler. When the taper angle formed on one end surface of the cast lock nut is smaller than or equal to the taper portion, the grout material is press-fitted from the injection hole of the caster coupler. A method of connecting a threaded reinforcing bar, characterized in that:
入用の注入孔をとった鋳物製カプラ−で２本のねじ節鉄
筋を縦方向に接続した請求項８または９記載のねじ節鉄
筋の接続法。10. The screw joint reinforcing bar according to claim 8, wherein two screw joint reinforcing bars are vertically connected by a cast coupler having an injection hole for press-fitting the grout material above the middle of the cylindrical portion. Connection method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7097095A JP2926307B2 (en) | 1995-03-02 | 1995-03-02 | Connection of threaded joints and threaded joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7097095A JP2926307B2 (en) | 1995-03-02 | 1995-03-02 | Connection of threaded joints and threaded joints |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08239953A JPH08239953A (en) | 1996-09-17 |
| JP2926307B2 true JP2926307B2 (en) | 1999-07-28 |
Family
ID=13446898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7097095A Expired - Lifetime JP2926307B2 (en) | 1995-03-02 | 1995-03-02 | Connection of threaded joints and threaded joints |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2926307B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101486039B1 (en) * | 2013-07-09 | 2015-01-23 | 태연기계주식회사 | Iron bar coupler and method for coupling iron bar using iron bar coupler |
| JP6807779B2 (en) * | 2017-03-10 | 2021-01-06 | 株式会社伊藤製鐵所 | coupler |
| CN108412133B (en) * | 2018-01-30 | 2023-07-18 | 浙江新盛建设集团有限公司 | Reinforcing steel bar connecting device of self-locking assembly type component and using method thereof |
-
1995
- 1995-03-02 JP JP7097095A patent/JP2926307B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08239953A (en) | 1996-09-17 |
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