JPH1061107A - Mechanical type reinforcing bar coupler, coupler composing member and its manufacture - Google Patents
Mechanical type reinforcing bar coupler, coupler composing member and its manufactureInfo
- Publication number
- JPH1061107A JPH1061107A JP8241392A JP24139296A JPH1061107A JP H1061107 A JPH1061107 A JP H1061107A JP 8241392 A JP8241392 A JP 8241392A JP 24139296 A JP24139296 A JP 24139296A JP H1061107 A JPH1061107 A JP H1061107A
- Authority
- JP
- Japan
- Prior art keywords
- coupler
- lock nut
- joint
- bridge
- screwed
- 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.)
- Pending
Links
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、建築物等の施工
現場において鉄筋を連結する際に用いられる機械式鉄筋
継手、継手構成部材及びその製造方法の技術分野に属
し、特に連結作業の作業性の改善を図ったものに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of mechanical rebar joints, joint components and a method of manufacturing the same, which are used for connecting rebar at a construction site of a building or the like. Related to the improvement of
【０００２】[0002]
【従来の技術】従来の機械式鉄筋継手について、図９に
基づいて説明する。図９は機械式鉄筋継手で連結した状
態を示す一部断面図である。図において、５１及び５２
は接続すべき鉄筋であり、各鉄筋５１、５２の一端には
それぞれ雄ねじ部５３、５４を圧接している。５５は内
部に雌ねじ部５６を有した筒形のカプラーであり、この
カプラー５５の雌ねじ部５６を双方の鉄筋５１、５２の
雄ねじ部５３、５４に螺合し、さらに各雄ねじ部５３、
５４に螺合したロックナット５７、５８を上記カプラー
５５に圧着させている。2. Description of the Related Art A conventional mechanical rebar joint will be described with reference to FIG. FIG. 9 is a partial cross-sectional view showing a state of being connected by a mechanical reinforcing joint. In the figure, 51 and 52
Is a reinforcing bar to be connected, and male screw portions 53 and 54 are pressed against one ends of the reinforcing bars 51 and 52, respectively. Reference numeral 55 denotes a cylindrical coupler having a female screw portion 56 therein. The female screw portion 56 of the coupler 55 is screwed to the male screw portions 53, 54 of both the reinforcing bars 51, 52, and further, each male screw portion 53,
Lock nuts 57 and 58 screwed to 54 are pressed against the coupler 55.
【０００３】上記機械式鉄筋継手で鉄筋５１と鉄筋５２
とを連結する手順は、まず増設側の鉄筋５１の雄ねじ部
５３に第１ロックナット５７及びカプラー５５を順に螺
合し、雄ねじ部５３のほぼ根元まで螺進によりそれぞれ
退避させると共に、既設側の鉄筋５２の雄ねじ部５４に
も第２ロックナット５８を螺合し、これを雄ねじ部５４
のほぼ根元まで螺進により退避させておく。次いで、既
設鉄筋５２の雄ねじ部５４と増設鉄筋５１の雄ねじ部５
３とを対峙させ、カプラー５５を上記とは逆方向に螺進
させて既設鉄筋５２の雄ねじ部５４に螺合させ、カプラ
ー５５が両雄ねじ部５３、５４に跨るまで螺進させる。
そして、両ロックナット５７、５８をそれぞれ螺進さ
せ、トルクレンチ等の計測器付き工具を用いて規定のト
ルクで上記カプラー５５に圧着させるというものであ
る。[0003] The above-mentioned mechanical rebar joint is used for rebar 51 and rebar 52.
First, the first lock nut 57 and the coupler 55 are screwed into the male threaded portion 53 of the reinforcing steel bar 51 on the additional side in order, and retracted to the root of the male threaded portion 53 by screw advance. A second lock nut 58 is also screwed into the male screw portion 54 of the reinforcing bar 52, and this is screwed into the male screw portion 54.
Is retracted by screwing up to almost the base of. Next, the male screw portion 54 of the existing reinforcing bar 52 and the male screw portion 5 of the additional reinforcing bar 51
3, the coupler 55 is screwed in the opposite direction to the above, screwed into the male screw portion 54 of the existing reinforcing bar 52, and screwed until the coupler 55 straddles both the male screw portions 53, 54.
Then, the lock nuts 57 and 58 are screwed, respectively, and are pressed against the coupler 55 with a specified torque using a tool with a measuring instrument such as a torque wrench.
【０００４】[0004]
【発明が解決しようとする課題】このような機械式鉄筋
継手では、カプラー５５及び両ロックナット５７、５８
の螺合及び螺進を伴う上記一連の作業が非常に煩らわし
く、作業性の改善が切望されている。つまり従来は、
増設鉄筋５１の雄ねじ部５３への第１ロックナット５７
の螺合、同雄ねじ部５３へのカプラー５５の螺合、
既設鉄筋５２の雄ねじ部５４への第２ロックナット５８
の螺合、カプラー５５の既設鉄筋５２の雄ねじ部５４
への螺合、第１ロックナット５７のカプラー５５への
追従螺進、両ロックナット５７、５８のカプラー５５
への圧着という煩雑な作業を行わなければならなかった
ということである。In such a mechanical rebar joint, the coupler 55 and the lock nuts 57, 58 are used.
The above-mentioned series of operations involving screwing and screwing is very troublesome, and there is a strong need for improved workability. In other words, conventionally,
First lock nut 57 to male screw portion 53 of additional reinforcing bar 51
Screwing the coupler 55 into the male screw portion 53,
Second lock nut 58 to male screw portion 54 of existing reinforcing bar 52
Male thread portion 54 of the existing reinforcing bar 52 of the coupler 55
Screwing the first lock nut 57 to follow the coupler 55, and the coupler 55 of the lock nuts 57 and 58
That is, the complicated work of crimping to the surface had to be performed.
【０００５】また、上記カプラー５５、及び両ロックナ
ット５７、５８がそれぞれ別々の部品であるため、部品
搬送や部品点数管理が煩雑になり、また施工現場におい
て部品不足等の不具合が発生することもあった。In addition, since the coupler 55 and the lock nuts 57 and 58 are separate components, component transport and component count management become complicated, and problems such as shortage of components at the construction site may occur. there were.
【０００６】この発明は上記従来の欠点を解決するため
になされたものであって、その目的は、ロックナットや
カプラーの螺合及び螺進を伴う鉄筋の連結作業を簡略化
することが可能であり、また部品搬送や部品点数管理を
容易化できると共に、施工現場における部品不足等の不
具合の発生を抑制することが可能な機械式鉄筋継手を提
供することにある。さらに、ロックナットをカプラーに
圧着させる際のトルク管理を容易かつ確実に行える機械
式鉄筋継手を提供することもこの発明の目的である。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to simplify a connection operation of a reinforcing bar involving screwing and screwing of a lock nut and a coupler. Another object of the present invention is to provide a mechanical rebar joint capable of facilitating component conveyance and component count management and suppressing occurrence of a defect such as a shortage of components at a construction site. Still another object of the present invention is to provide a mechanical rebar joint which can easily and surely control the torque when the lock nut is crimped to the coupler.
【０００７】[0007]
【課題を解決するための手段】そこで請求項１の機械式
鉄筋継手は、接続すべき第１鉄筋１と第２鉄筋２との端
部にそれぞれ第１雄ねじ部３と第２雄ねじ部４とを設
け、第１ロックナット７と、内部に雌ねじ部６を有した
筒形のカプラー５とを上記第１鉄筋１の第１雄ねじ部３
に螺合し、第２ロックナット８を螺合した状態の第２鉄
筋２の第２雄ねじ部４に向けてカプラー５を螺進し、そ
の雌ねじ部６を双方の鉄筋１、２の各雄ねじ部３、４に
螺合した状態において、各雄ねじ部３、４に螺合したロ
ックナット７、８をそれぞれ上記カプラー５に圧着させ
るようにした機械式鉄筋継手において、上記第１ロック
ナット７とカプラー５とは、両者５、７の雌ねじ部６、
９のピッチが連続するように配置すると共に、両者５、
７を、手動工具のトルクを受けて破断する程度の強度を
有したブリッジ１１を介して連結したことを特徴として
いる。また請求項２の継手構成部材は、上記において用
いる第１ロックナット７とカプラー５との組合せ部材だ
けを単独で記載したものである。Accordingly, the mechanical reinforcing joint according to the first aspect of the present invention has a first male screw portion 3 and a second male screw portion 4 at the ends of the first reinforcing bar 1 and the second reinforcing bar 2 to be connected, respectively. And the first lock nut 7 and the cylindrical coupler 5 having the female screw portion 6 therein are connected to the first male screw portion 3 of the first reinforcing bar 1.
And the coupler 5 is screwed toward the second male screw portion 4 of the second reinforcing bar 2 in a state where the second lock nut 8 is screwed, and the female screw portion 6 is screwed into each male screw of both the reinforcing bars 1 and 2. In a mechanical rebar joint in which the lock nuts 7 and 8 screwed to the male screw portions 3 and 4 are respectively crimped to the coupler 5 in a state where the first lock nut 7 and the first lock nut 7 are screwed to the portions 3 and 4, respectively. The coupler 5 is a female screw part 6 of both 5, 7,
9 are arranged so that the pitch is continuous.
7 are connected via a bridge 11 having a strength enough to break under the torque of a manual tool. In the joint constituent member of the second aspect, only the combination member of the first lock nut 7 and the coupler 5 used above is described alone.
【０００８】この機械式鉄筋継手及び継手構成部材で
は、例えば既設鉄筋（第２鉄筋）２に増設鉄筋（第１鉄
筋）１を継ぐ場合、まず増設鉄筋１の雄ねじ部３に、ブ
リッジ１１を介して連結された第１ロックナット７及び
カプラー５を所定の長さにわたって螺合しておく。この
とき上記従来のの２作業を同時に行える。そして、
既設鉄筋２の雄ねじ部４に第２ロックナット８が螺合さ
れた状態で、ブリッジ１１を介して連結された第１ロッ
クナット７及びカプラー５を上記とは逆方向に螺進させ
て既設鉄筋２の雄ねじ部４に螺合させ、カプラー５の雌
ねじ部６が両雄ねじ部３、４に跨るまで螺進させる。こ
のとき上記従来のの２作業を同時に行える。そし
て、増設鉄筋１のロックナット７をレンチ等を用いて締
めればブリッジ１１が破断するから、そのまま規定トル
クで締め、また既設鉄筋２側の第２ロックナット８をレ
ンチ等を用いて規定トルクで締めればカプラー５に圧着
し、鉄筋の連結が行える。上記規定トルクは、鉄筋呼び
径１３ｍｍのもので３〜６Ｋｇｆ・ｍ、鉄筋呼び径４１
ｍｍのもので７８〜１５６Ｋｇｆ・ｍであるので、ブリ
ッジ１１の破断強度は、鉄筋呼び径に応じてそれよりも
十分小さな値になるよう設定しておくのが好ましい。ま
た上記継手構成部材では、搬送時等においてカプラー５
と第１ロックナット７とを、単品のように取扱える。In this mechanical rebar joint and its constituent members, for example, when the additional rebar (first rebar) 1 is connected to the existing rebar (second rebar) 2, first, the bridge 11 is connected to the male screw portion 3 of the additional rebar 1. The first lock nut 7 and the coupler 5 connected by screwing are screwed together over a predetermined length. At this time, the above two conventional operations can be performed simultaneously. And
In a state where the second lock nut 8 is screwed into the male screw portion 4 of the existing reinforcing bar 2, the first lock nut 7 and the coupler 5 connected via the bridge 11 are screwed in a direction opposite to the above, and the existing reinforcing bar is screwed. The male screw portion 4 is screwed into the female screw portion 4 and the female screw portion 6 of the coupler 5 is screwed until it crosses both male screw portions 3 and 4. At this time, the above two conventional operations can be performed simultaneously. When the lock nut 7 of the additional reinforcing bar 1 is tightened with a wrench or the like, the bridge 11 is broken. If tightened, it will be crimped to the coupler 5 and the rebar can be connected. The specified torque is 3 to 6 kgf · m for a reinforcing bar having a nominal diameter of 13 mm, and the reinforcing bar has a nominal diameter of 41 mm.
mm, the breaking strength of the bridge 11 is preferably set to a value sufficiently smaller than that according to the nominal diameter of the rebar. In addition, in the above-mentioned joint constituent member, the coupler 5
And the first lock nut 7 can be handled as a single item.
【０００９】請求項３の機械式鉄筋継手及び継手構成部
材は、上記第１ロックナット７が回転軸方向に２分割さ
れ、これらの間がトルク設定ブリッジ１３を介して連結
されており、このトルク設定ブリッジ１３の破断強度
が、上記ブリッジ１１の破断強度よりも高く、かつ上記
第１ロックナット７をカプラー５に圧着させるに適した
規定トルクに対応して設定されていることを特徴として
いる。According to a third aspect of the present invention, the first lock nut 7 is divided into two parts in the direction of the rotation axis, and the first lock nut 7 is connected via a torque setting bridge 13. It is characterized in that the breaking strength of the setting bridge 13 is higher than the breaking strength of the bridge 11 and is set corresponding to a specified torque suitable for crimping the first lock nut 7 to the coupler 5.
【００１０】この機械式鉄筋継手及び継手構成部材で
は、ロックナット７をレンチ等を用いて締めればブリッ
ジ１１が破断する。次いで分割された一方のロックナッ
ト７ｂを締めれば、規定トルクに達したときにトルク設
定ブリッジ１３が破断し、カプラー５に圧着する。従っ
て、従来のようにトルクレンチのような計測器付き工具
を施工現場に持込む必要がないし、またトルク設定ブリ
ッジ１３の破断により、規定トルク付与作業が完了して
いることを確認できる。In this mechanical rebar joint and the constituent members of the joint, when the lock nut 7 is tightened with a wrench or the like, the bridge 11 is broken. Next, when one of the divided lock nuts 7b is tightened, the torque setting bridge 13 is broken when the specified torque is reached, and the torque setting bridge 13 is crimped to the coupler 5. Therefore, there is no need to bring a tool with a measuring instrument such as a torque wrench to the construction site as in the related art, and it is possible to confirm that the specified torque application work has been completed by breaking the torque setting bridge 13.
【００１１】請求項４の機械式鉄筋継手及び継手構成部
材は、上記第１ロックナット７とカプラー５とにおいて
は、軸方向に相対向する端部に環状の圧着面２７、２５
がそれぞれ形成されており、この圧着面２７、２５は上
記雌ねじ部６、９の谷よりも外周側に位置すると共に、
この圧着面２７、２５の内周側で、かつ上記雌ねじ部
６、９の谷よりも外周側の位置に上記ブリッジ１１が設
けられていることを特徴としている。According to a fourth aspect of the present invention, there is provided a mechanical reinforcing joint and a joint constituting member, wherein the first lock nut 7 and the coupler 5 have annular crimping surfaces 27 and 25 at axially opposite ends.
These crimping surfaces 27 and 25 are located on the outer peripheral side of the valleys of the female screw portions 6 and 9 respectively.
The bridge 11 is provided on the inner peripheral side of the crimping surfaces 27 and 25 and on the outer peripheral side of the valleys of the internal thread portions 6 and 9.
【００１２】この機械式鉄筋継手及び継手構成部材で
は、破断したブリッジ１１が圧着面２７、２５間に介在
しないので、安定した締め付けトルクが得られる。また
ブリッジ１１を設けても、これが第１雄ねじ部３に干渉
するおそれがない。In this mechanical rebar joint and the constituent members of the joint, since the broken bridge 11 does not intervene between the crimping surfaces 27 and 25, a stable tightening torque can be obtained. Also, even if the bridge 11 is provided, there is no possibility that the bridge 11 will interfere with the first male screw portion 3.
【００１３】請求項５の機械式鉄筋継手及び継手構成部
材は、上記ブリッジ１１が、カプラー５と第２ロックナ
ット８との間にも設けられていることを特徴としてい
る。According to a fifth aspect of the present invention, there is provided a mechanical rebar joint and a joint constituting member, wherein the bridge 11 is provided between the coupler 5 and the second lock nut 8.
【００１４】この機械式鉄筋継手及び継手構成部材で
は、カプラー５と２つのロックナット７、８が仮止めさ
れるから、両鉄筋１、２の各雄ねじ部３、４にロックナ
ット７、８を独自に螺合及び螺進させる作業が不要とな
る。つまり上記従来の〜の作業が２回の作業で行え
る。またカプラー５と一対のロックナット７、８とを、
単品のように取扱えるので、部品搬送や部品点数管理が
行い易く、施工現場での部品不足等の不具合の発生を抑
制できる。In this mechanical rebar joint and the joint constituting member, since the coupler 5 and the two lock nuts 7 and 8 are temporarily fixed, the lock nuts 7 and 8 are respectively attached to the male screw portions 3 and 4 of the rebars 1 and 2. The work of screwing and screwing independently is not required. That is, the above-mentioned conventional operations can be performed in two operations. Also, the coupler 5 and the pair of lock nuts 7, 8
Since it can be handled as a single item, it is easy to carry parts and manage the number of parts, and it is possible to suppress the occurrence of problems such as shortage of parts at the construction site.
【００１５】請求項６の機械式鉄筋継手及び継手構成部
材は、上記カプラー５及びロックナット７、８を鋳造に
より形成すると共に、各雄ねじ部３、４及び各雌ねじ部
６、９、１０を台形ねじとしたことを特徴としている。According to a sixth aspect of the present invention, the coupler 5 and the lock nuts 7 and 8 are formed by casting, and the male screw portions 3 and 4 and the female screw portions 6 9 and 10 are trapezoidal. It is characterized by screws.
【００１６】この機械式鉄筋継手及び継手構成部材で
は、台形ねじとしたことにより、三角ねじに較べて、中
子の製作が容易である等、鋳造作業が行い易く、また損
傷し難く補修も容易であり、リードが大きくとれるから
鉄筋を連結する作業が容易となる。[0016] In this mechanical rebar joint and the constituent members of the joint, the use of trapezoidal screws facilitates the casting operation such as easier production of the core as compared with the triangular screw, and is also less likely to be damaged and easier to repair. Since the lead can be made large, the work of connecting the reinforcing bars becomes easy.
【００１７】請求項７の継手構成部材の製造方法は、上
記請求項４の継手構成部材を製造するに際し、上記第１
ロックナット７とカプラー５との相対向する端部となる
部分を、雌ねじ部６、９よりも外周側に位置する筒状部
２０で全周にわたって連結すると共に、筒状部２０の内
周部には、上記雌ねじ部６、９よりも外周側に位置する
複数条の突条１１を軸方向に延設して成る筒状素材を鋳
造により一体成形しておき、その後、ねじ軸と平行な回
転軸を有するカッターで上記筒状部２０を、上記突条１
１を残して全周にわたって切断し、これにより上記圧着
面２５、２７と上記ブリッジ１１とを形成することを特
徴としている。According to a seventh aspect of the present invention, there is provided a method of manufacturing a joint component according to the fourth aspect of the present invention, wherein the first component is manufactured when the first component is manufactured.
Opposite ends of the lock nut 7 and the coupler 5 are connected over the entire circumference by a cylindrical portion 20 located on the outer peripheral side of the female screw portions 6 and 9, and an inner peripheral portion of the cylindrical portion 20. A cylindrical material formed by extending a plurality of protruding ridges 11 located on the outer peripheral side from the female screw portions 6 and 9 in the axial direction is integrally formed by casting, and then parallel to the screw shaft. Using a cutter having a rotating shaft, the cylindrical portion 20 is
1 is cut over the entire circumference, thereby forming the crimping surfaces 25 and 27 and the bridge 11.
【００１８】この継手構成部材の製造方法では、カプラ
ー５及びロックナット７を一度に製造でき、また簡単な
作業で圧着面２５、２７とブリッジ１１とを精度良く形
成できるので、製造コストを低減できる。According to the method of manufacturing the joint component, the coupler 5 and the lock nut 7 can be manufactured at one time, and the crimping surfaces 25, 27 and the bridge 11 can be formed with high precision by a simple operation, so that the manufacturing cost can be reduced. .
【００１９】請求項８の継手構成部材は、接続すべき一
対の雄ねじ部３、４の両者にカプラー５を螺合させ、上
記各雄ねじ部３、４に螺合したロックナット７、８をカ
プラー５の両側に圧着させて成る機械式鉄筋継手におい
て用いる継手構成部材であって、上記カプラー５と、少
なくともいずれか一方のロックナット７とを、その雌ね
じ部６、９のピッチが連続するように配置すると共に、
両者５、７を、手動工具のトルクを受けて破断する程度
の強度を有したブリッジ１１を介して連結したことを特
徴としている。According to another aspect of the present invention, a coupler 5 is screwed into both of a pair of male screw portions 3 and 4 to be connected, and lock nuts 7 and 8 screwed into the respective male screw portions 3 and 4 are coupled with the coupler. 5. A coupling component member used in a mechanical reinforcing joint which is crimped on both sides of the coupling 5, wherein the coupler 5 and at least one of the lock nuts 7 are connected so that the pitches of the female screw portions 6, 9 are continuous. Place it,
It is characterized in that the two 5 and 7 are connected via a bridge 11 having such a strength as to be broken by receiving the torque of a manual tool.
【００２０】上記請求項８の継手構成部材は、請求項１
や請求項２のような継手状態を有するもののみならず、
その他の構造の継手状態をもその前提として包含してい
るものであり、このような場合でも螺合、螺進作業を、
カプラー５とロックナット７とを一体のものとして行え
るので、鉄筋を連結する際の作業性を改善できる。According to the eighth aspect of the present invention, there is provided the joint constituting member according to the first aspect.
Not only those having a joint state as in claim 2 or claim 2,
It also includes the joint state of other structures as its premise, even in such a case, screwing, screwing work,
Since the coupler 5 and the lock nut 7 can be integrated, the workability in connecting the reinforcing bars can be improved.
【００２１】[0021]
【発明の実施の形態】次にこの発明の機械式鉄筋継手、
継手構成部材及びその製造方法の具体的な実施形態につ
いて、図面を参照しつつ詳細に説明する。図１はこの発
明の第１の実施形態であって、機械式鉄筋継手により鉄
筋を連結した状態の側面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a mechanical reinforcing joint according to the present invention,
Specific embodiments of the joint constituent member and the manufacturing method thereof will be described in detail with reference to the drawings. FIG. 1 is a first embodiment of the present invention and is a side view of a state in which rebars are connected by a mechanical rebar joint.
【００２２】図１において、１は増設鉄筋（第１鉄
筋）、２は既設鉄筋（第２鉄筋）であり、各鉄筋１、２
の一端にはそれぞれ台形ねじよりなる第１及び第２雄ね
じ部３、４を、例えば摩擦圧接等により連結している。
５は内部に上記雄ねじ部３、４に対応した雌ねじ部６を
有した筒形のカプラー、７、８は上記雌ねじ部６と同様
の雌ねじ部９、１０を有した第１及び第２ロックナット
である。In FIG. 1, reference numeral 1 denotes an additional reinforcing bar (first reinforcing bar) and 2 denotes an existing reinforcing bar (second reinforcing bar).
The first and second external thread portions 3 and 4 each formed of a trapezoidal screw are connected to one end of each of them by, for example, friction welding.
5 is a cylindrical coupler having a female screw portion 6 corresponding to the male screw portions 3 and 4 inside, and 7 and 8 are first and second lock nuts having female screw portions 9 and 10 similar to the female screw portion 6. It is.
【００２３】上記カプラー５と、このカプラー５を鉄筋
接続時に螺進により退避させる側の第１雄ねじ部３に螺
合する第１ロックナット７とは、雌ねじ部６、９のピッ
チが連続するように配置されていると共に、手動工具の
トルクを受けて破断する程度の強度を有したブリッジ１
１・・を介して連結され、これらカプラー５と第１ロッ
クナット７とによって継手構成部材Ａが構成されてい
る。The coupler 5 and the first lock nut 7 screwed to the first male thread 3 on the side where the coupler 5 is retracted by screwing at the time of rebar connection are connected so that the pitch of the female threads 6 and 9 is continuous. Bridge 1 which is arranged at a distance and has a strength such that it is broken by the torque of a manual tool.
The coupler 5 and the first lock nut 7 constitute a joint component A.
【００２４】上記継手構成部材Ａの構造、つまり第１ロ
ックナット７とカプラー５との接続構造について説明す
る。このカプラー５と第１ロックナット７とにおいて
は、軸方向に相対向する端部に、環状の圧着面２５、２
７が形成されている。この環状の圧着面２５、２７は、
上記各雌ねじ部６、９の谷よりも径方向外周側に位置す
るものである。そして図３に示すように、上記環状の圧
着面２５、２６の内周部であって、かつ上記各雌ねじ部
６、９の谷よりも径方向外周側に、カプラー５と第１ロ
ックナット７とを周上の数点（図では３点）で一体的に
連結する短寸棒状のブリッジ１１が設けられている。The structure of the joint component A, that is, the connection structure between the first lock nut 7 and the coupler 5 will be described. In the coupler 5 and the first lock nut 7, annular crimping surfaces 25, 2,
7 are formed. These annular crimping surfaces 25, 27
It is located on the radially outer peripheral side of the troughs of the female screw portions 6 and 9. As shown in FIG. 3, the coupler 5 and the first lock nut 7 are provided on the inner peripheral portion of the annular crimping surfaces 25 and 26 and on the radially outer side of the valleys of the female screw portions 6 and 9. And a short rod-shaped bridge 11 that integrally connects the two at several points (three points in the figure) on the circumference.
【００２５】次にその製造方法について説明する。ま
ず、上記第１ロックナット７とカプラー５との相対向す
る端部となる部分を、雌ねじ部６、９の谷よりも外周側
に位置するやや薄肉の筒状部２０で全周にわたって連結
すると共に、筒状部２０の内周部には、上記雌ねじ部
６、９の谷よりも外周側に位置する複数条の突条１１を
軸方向に延設して成る筒状素材を鋳造により一体成形し
ておく。この鋳造時に、上記各雌ねじ部６、９も適当な
中子を用いて台形ねじとして成形しておく。そしてその
後、ねじ軸と平行な回転軸を有するカッターで上記筒状
部２０を、上記突条１１を残して全周にわたって切断
し、これにより上記圧着面２５、２７と上記ブリッジ１
１を形成するのである。Next, the manufacturing method will be described. First, the opposite end portions of the first lock nut 7 and the coupler 5 are connected over the entire circumference by a slightly thin cylindrical portion 20 located on the outer peripheral side of the valleys of the female screw portions 6 and 9. At the same time, on the inner peripheral portion of the cylindrical portion 20, a cylindrical material formed by extending a plurality of ridges 11 located on the outer peripheral side from the valleys of the female screw portions 6 and 9 in the axial direction is integrally formed by casting. Mold it. At the time of casting, each of the female screw portions 6 and 9 is also formed as a trapezoidal screw using an appropriate core. Thereafter, the cylindrical portion 20 is cut over the entire circumference except for the ridges 11 by a cutter having a rotation axis parallel to the screw axis, whereby the crimp surfaces 25 and 27 and the bridge 1 are cut.
One is formed.
【００２６】上記第１実施形態の機械式鉄筋継手では、
既設鉄筋２に増設鉄筋１を連結する場合、まず図１に示
すように増設鉄筋１の第１雄ねじ部３に継手構成部材
Ａ、つまりブリッジ１１・・を介して連結された第１ロ
ックナット７及びカプラー５を螺合し、第１雄ねじ部３
のほぼ根元まで螺進により退避させておく。このとき第
２ロックナット８も、図のように第２雄ねじ部４に螺合
し、その根元近くまで螺進させておく。次いで、増設鉄
筋１の第１雄ねじ部３と既設鉄筋２の第２雄ねじ部４と
を対峙させ、ブリッジ１１・・を介して連結されたロッ
クナット７及びカプラー５を先ほどとは逆方向に螺進さ
せて既設鉄筋２の第２雄ねじ部４に螺合させ、カプラー
５の雌ねじ部６が両雄ねじ部３、４に跨るまで螺進させ
る（図２の状態）。そして、両ロックナット７、８をレ
ンチ等を用いて締めればブリッジ１１・・が破断するか
ら、そのまま両ロックナット７、８をレンチ等を用いて
規定トルクで締めれば両ロックナット７、８はカプラー
５に圧着され、これにより両鉄筋１、２の連結が完了す
る。このように本実施形態においては、従来のものに較
べて第１ロックナット７独自の螺合及び螺進を伴う作業
が不要となり、作業を簡略化することができる。つまり
上記従来のの作業が同時に行えると共に、さらに
の作業を同時に行えることになる。上記規定トルク
は、鉄筋呼び径１３ｍｍのもので３〜６Ｋｇｆ・ｍ、鉄
筋呼び径４１ｍｍのもので７８〜１５６Ｋｇｆ・ｍであ
るので、ブリッジ１１の破断強度は、鉄筋呼び径に応じ
てそれよりも十分小さな値になるよう設定しておくのが
好ましい。In the mechanical reinforcing joint of the first embodiment,
When connecting the additional reinforcing bar 1 to the existing reinforcing bar 2, first, as shown in FIG. 1, the first lock nut 7 connected to the first male screw portion 3 of the additional reinforcing bar 1 via the joint component A, that is, the bridge 11. And the coupler 5 and the first male screw 3
Is retracted by screwing up to almost the base of. At this time, the second lock nut 8 is also screwed into the second male screw portion 4 as shown in the figure, and is advanced to near the root thereof. Next, the first male screw portion 3 of the additional reinforcing bar 1 and the second male screw portion 4 of the existing reinforcing bar 2 are opposed to each other, and the lock nut 7 and the coupler 5 connected via the bridges 11 are screwed in the opposite directions. The screw is screwed into the second male screw portion 4 of the existing reinforcing bar 2 and screwed until the female screw portion 6 of the coupler 5 straddles both the male screw portions 3 and 4 (the state of FIG. 2). If the lock nuts 7 and 8 are tightened with a wrench or the like, the bridge 11 will be broken. If the lock nuts 7 and 8 are tightened with a specified torque using a wrench or the like, the lock nuts 7 and 8 become It is crimped to the coupler 5, and the connection of both rebars 1 and 2 is completed. As described above, in the present embodiment, the work involving screwing and screwing unique to the first lock nut 7 is not required as compared with the conventional one, and the work can be simplified. That is, the above-mentioned conventional work can be performed simultaneously, and further work can be performed simultaneously. The specified torque is 3 to 6 kgf · m for a reinforcing bar with a nominal diameter of 13 mm, and 78 to 156 kgf · m for a reinforcing bar with a nominal diameter of 41 mm. Therefore, the breaking strength of the bridge 11 is greater than that according to the reinforcing bar nominal diameter. It is preferable to set the value to a sufficiently small value.
【００２７】また、ブリッジ１１が、圧着面２５、２７
よりも内周側で、かつカプラー５及びロックナット７の
雌ねじ部９よりも外周側に設けられているから、破断し
たブリッジ１１が圧着面２５、２７間に介在しないの
で、安定した締め付けトルクが得られると共に、ブリッ
ジ１１を設けても、これが第１雄ねじ部３に干渉するお
それがない。The bridge 11 is provided with the crimping surfaces 25, 27
Is provided on the inner periphery side and on the outer periphery side than the female screw portion 9 of the coupler 5 and the lock nut 7, the broken bridge 11 is not interposed between the crimping surfaces 25 and 27, so that a stable tightening torque can be obtained. As a result, even if the bridge 11 is provided, there is no possibility that the bridge 11 will interfere with the first male screw portion 3.
【００２８】さらに、上記雄ねじ部３、４及び雌ねじ部
６、９、１０を台形ねじとしたことから、三角ねじに較
べて、中子の製作が容易である等、鋳造作業が行い易
く、また損傷し難く補修も容易であり、リードが大きく
とれるから鉄筋１、２を連結する作業が容易である。Further, since the male screw portions 3 and 4 and the female screw portions 6, 9 and 10 are trapezoidal screws, the core can be easily manufactured as compared with a triangular screw. It is hard to be damaged and repair is easy, and the work of connecting the reinforcing bars 1 and 2 is easy because the lead can be made large.
【００２９】しかも、上記カプラー５及び第１ロックナ
ット７が鋳物で一体的に成形されているから、カプラー
５及び第１ロックナット７を一度に製造でき、また簡単
な作業で圧着面２５、２７とブリッジ１１とを精度良く
形成できるので、製造コストを低減できる。さらにカプ
ラー５と第１ロックナット７とを、単品のように取扱え
るので、部品搬送や部品点数管理が行い易く、施工現場
での部品不足等の不具合の発生を抑制できる。なおコス
ト面からすれば、上記第２ロックナット８もカプラー５
と一体に鋳造しておき、その後、これをカッターによっ
て切断、分離するのが好ましい。Moreover, since the coupler 5 and the first lock nut 7 are integrally formed by casting, the coupler 5 and the first lock nut 7 can be manufactured at one time, and the crimping surfaces 25, 27 can be easily manufactured. And the bridge 11 can be formed with high precision, so that the manufacturing cost can be reduced. Further, since the coupler 5 and the first lock nut 7 can be handled as a single item, it is easy to carry out the parts transfer and the number of parts, and it is possible to suppress the occurrence of problems such as a shortage of parts at the construction site. In terms of cost, the second lock nut 8 is also connected to the coupler 5.
It is preferable to cast it integrally, and then cut and separate it with a cutter.
【００３０】図５に継手構成部材Ａの第２の実施形態を
示す。これは図のように、カプラー５に対して、第１ロ
ックナット７のみならず、さらに第２ロックナット８を
も上記同様のブリッジ１２を介して付設した構造のもの
である。なお他の構造は第１の実施形態と略同様である
ため、同一部分を同一符号で示してその説明を省略す
る。この実施形態においては、第１の実施形態に比較す
ると、第２ロックナット８を付設した分だけ、第１雄ね
じ部３が長くなってしまうという難点はあるものの、連
結作業に際しては、従来の上記〜の作業が２回の螺
合、螺進作業によって行えるという作業性上の利点、及
びカプラー５と一対のロックナット７、８、つまり連結
作業に必要な全ての部品を単品のように取扱えるので、
部品搬送や部品点数管理が行い易いという利点が生じ
る。なおこの実施形態のブリッジ１１、１２の構造、及
び形成方法等は第１の実施形態と同様である。FIG. 5 shows a second embodiment of the joint component A. As shown in the drawing, not only the first lock nut 7 but also the second lock nut 8 is attached to the coupler 5 via a bridge 12 similar to that described above. Since the other structure is substantially the same as that of the first embodiment, the same portions are denoted by the same reference numerals and the description thereof will be omitted. In this embodiment, as compared with the first embodiment, there is a disadvantage that the first male screw portion 3 becomes longer by the amount provided with the second lock nut 8, but at the time of connection work, the conventional (1) can be performed by two screwing and screwing operations, and the coupler 5 and a pair of lock nuts 7 and 8, that is, all parts necessary for the connection operation can be handled as a single item. So
There is an advantage that it is easy to carry out component transfer and component count management. Note that the structure, forming method, and the like of the bridges 11 and 12 of this embodiment are the same as those of the first embodiment.
【００３１】図６は第３の実施形態を示す。この実施形
態では、第１ロックナット７が内側ロックナット７ａと
外側ロックナット７ｂとに回転軸方向に２分割され、図
８に示すように、これらの間が手動工具のトルクを受け
て破断する程度の強度を有したトルク設定ブリッジ１
３、１３・・を介して連結されており、このトルク設定
ブリッジ１３、１３・・の破断強度が第１ロックナット
７をカプラー５に圧着させるに適した規定トルクに対応
して設定されている。なお他の構造は第１の実施形態と
略同様であるので、同一部分を同一符号で示してその説
明を省略する。上記ブリッジ１３・・は、上記ブリッジ
１１と同様に形成されたものであり、内側ロックナット
７ａ及び外側ロックナット７ｂの雌ねじ部の歯底よりも
外周側において、両ロックナット７ａ、７ｂを周上の数
点（図８では３点）で一体的に連結する短い棒状部材で
ある。上記ロックナット７ａ、７ｂは鋳物で一体成形さ
れ、上記ブリッジ１１と同様に、両者７ａ、７ｂの境界
付近でねじ軸と平行な回転軸を有する薄刃のカッターで
外周側から数回切り込むことにより、切り残った部分で
ブリッジ１３・・を形成するようにしたものである。そ
して、トルク設定ブリッジ１３は先のブリッジ１１より
も大きな断面積を有するものとして形成され（図７、図
８参照）、トルク設定ブリッジ１３の破断強度がブリッ
ジ１１の破断強度を上回るように設定されている。なお
このトルク設定ブリッジ１３の設定トルクについては、
上記記載を参照されたい。FIG. 6 shows a third embodiment. In this embodiment, the first lock nut 7 is divided into an inner lock nut 7a and an outer lock nut 7b in the direction of the rotation axis, and as shown in FIG. Torque setting bridge 1 with moderate strength
The torque setting bridges 13, 13,... Are set to have a breaking strength corresponding to a specified torque suitable for crimping the first lock nut 7 to the coupler 5. . Since the other structure is substantially the same as that of the first embodiment, the same portions are denoted by the same reference numerals and description thereof will be omitted. The bridges 13 are formed in the same manner as the bridges 11, and the two lock nuts 7a and 7b are arranged on the outer periphery of the female thread portions of the inner lock nut 7a and the outer lock nut 7b. Are short rod-shaped members that are integrally connected at several points (three points in FIG. 8). The lock nuts 7a and 7b are integrally formed by casting, and, like the bridge 11, are cut several times from the outer peripheral side with a thin blade cutter having a rotation axis parallel to a screw axis near the boundary between the two. The bridge 13 is formed by the uncut portion. Then, the torque setting bridge 13 is formed so as to have a larger cross-sectional area than the previous bridge 11 (see FIGS. 7 and 8), and the breaking strength of the torque setting bridge 13 is set to exceed the breaking strength of the bridge 11. ing. In addition, about the set torque of this torque setting bridge 13,
See the description above.
【００３２】上記第３実施形態の機械式鉄筋継手では、
第１ロックナット７をレンチ等を用いて締めればブリッ
ジ１１・・が破断する。次いで外側ロックナット７ｂを
締めれば、規定トルクに達したときにトルク設定ブリッ
ジ１３・・が破断し、第１ロックナット７がカプラー５
に圧着する。従って、従来のものに較べて第１ロックナ
ット７がカプラーに圧着する際のトルク管理を容易かつ
確実に行うことができる。すなわち従来のようにトルク
レンチのような計測器付き工具を施工現場に持込む必要
がない。またトルク設定ブリッジ１３の破断により、規
定トルク付与作業が完了していることを確認できるの
で、従来のように規定トルク付与作業の完了を確認する
ためのマーキングを行う必要がない。In the mechanical reinforcing joint of the third embodiment,
If the first lock nut 7 is tightened using a wrench or the like, the bridges 11 are broken. Then, when the outer lock nut 7b is tightened, the torque setting bridge 13 is broken when the specified torque is reached, and the first lock nut 7 is
Crimp to Therefore, the torque management when the first lock nut 7 is crimped to the coupler can be performed easily and reliably as compared with the conventional lock nut. That is, there is no need to bring a tool with a measuring instrument such as a torque wrench to the construction site as in the related art. Further, since the breakage of the torque setting bridge 13 can confirm that the specified torque applying operation has been completed, it is not necessary to perform marking for confirming the completion of the specified torque applying operation as in the related art.
【００３３】なお上記第３実施形態では、第１ロックナ
ット７を２分割し、これらの間をトルク設定ブリッジ１
３、１３・・で連結したが、第２ロックナット８につい
ても２分割し、これらの間をトルク設定ブリッジで連結
した実施形態も本発明に含まれる。この実施形態によれ
ば、ロックナット７、８がカプラーに圧着する際のトル
ク管理を容易かつ確実に行うことができる。In the third embodiment, the first lock nut 7 is divided into two parts, and a torque setting bridge 1 is provided between these parts.
The present invention includes an embodiment in which the second lock nut 8 is divided into two parts, and the two parts are connected by a torque setting bridge. According to this embodiment, torque control when the lock nuts 7 and 8 are crimped to the coupler can be easily and reliably performed.
【００３４】上記各実施形態においては、第１鉄筋１及
び第２鉄筋２が回転できない状態を前提にその具体例を
説明したが、一対の雄ねじ部３、４を、カプラー５と一
対のロックナット７、８とを用いて連結する継手であれ
ば、本発明の適用は可能である。つまりカプラー５と、
少なくともいずれか一方のロックナット７とをブリッジ
１１によって連結すれば、螺合、螺進作業の能率化、容
易化が達成し得るということである。もっとも、上記第
１実施形態〜第３実施形態では、作業性の向上という効
果は特に顕著にあらわれる。In each of the above embodiments, a specific example has been described on the assumption that the first reinforcing bar 1 and the second reinforcing bar 2 cannot rotate. However, the pair of male screw portions 3 and 4 are connected to the coupler 5 and the pair of lock nuts. The present invention can be applied to any joint that is connected by using 7, 8. That is, with coupler 5,
If at least one of the lock nuts 7 is connected with the bridge 11, the efficiency and ease of screwing and screwing work can be achieved. However, in the first to third embodiments, the effect of improving workability is particularly remarkable.
【００３５】[0035]
【発明の効果】以上のように請求項１の機械式鉄筋継手
及び請求項２の継手構成部材では、第１ロックナット及
びカプラーを手動工具のトルクを受けて破断する程度の
強度を有したブリッジで仮止めしたから、これらの螺合
及び螺進を伴う作業を簡略化することができ、鉄筋を連
結する際の作業性を改善することができる。またカプラ
ーと第１ロックナットとを単品のように取扱えることか
ら、部品搬送や部品点数管理を容易化でき、また施工現
場における部品不足という不具合の発生を抑制できる。As described above, in the mechanical rebar joint according to the first aspect and the joint constituting member according to the second aspect, the bridge having such strength that the first lock nut and the coupler are broken by receiving the torque of the manual tool. The work involving the screwing and screwing can be simplified, and the workability when connecting the reinforcing bars can be improved. In addition, since the coupler and the first lock nut can be handled as a single item, it is possible to easily transport components and manage the number of components, and it is possible to suppress the occurrence of a shortage of components at the construction site.
【００３６】請求項３のようにすれば、ロックナットが
カプラーに圧着する際のトルク管理を容易かつ確実に行
うことができる。またトルクレンチのような計測器付き
工具を施工現場に持込む必要がないし、規定トルク付与
作業の完了確認作業を容易化できる。According to the third aspect, torque control when the lock nut is pressed against the coupler can be easily and reliably performed. Also, there is no need to bring a tool with a measuring instrument such as a torque wrench to the construction site, and the work of confirming the completion of the prescribed torque application work can be facilitated.
【００３７】請求項４のようにすれば、破断したブリッ
ジが圧着面間に介在しないので、安定した締め付けトル
クが得られる。またブリッジによりカプラー及びロック
ナットの螺合及び螺進が損なわれることを防止できる。According to the fourth aspect, since the broken bridge does not intervene between the crimping surfaces, a stable tightening torque can be obtained. Further, it is possible to prevent the screwing and screwing of the coupler and the lock nut from being damaged by the bridge.
【００３８】請求項５のようにすれば、第２鉄筋の雄ね
じ部にロックナットを独自に螺合及び螺進させる作業が
不要となり、鉄筋を連結する際の作業性を更に改善する
ことができる。またカプラーと一対のロックナットと
を、単品のように取扱えるので、部品搬送や部品点数管
理が一段と行い易く、施工現場での部品不足等の不具合
の発生を確実に抑制できる。According to the fifth aspect, the work of independently screwing and screwing the lock nut to the male screw portion of the second reinforcing bar becomes unnecessary, and the workability when connecting the reinforcing bar can be further improved. . In addition, since the coupler and the pair of lock nuts can be handled as a single item, component transport and component count management can be more easily performed, and occurrence of problems such as shortage of components at the construction site can be reliably suppressed.
【００３９】請求項６のようにすれば、台形ねじである
ことから三角ねじに較べて鋳造作業を容易化でき、また
損傷し難く補修も容易であるから施工費用を軽減でき、
さらにリードが大きくとれるから鉄筋連結作業が容易と
なって、作業性を更に改善することができる。According to the sixth aspect of the present invention, since the screw is a trapezoidal screw, the casting operation can be facilitated as compared with the triangular screw, and it is hard to damage and easy to repair, so that the construction cost can be reduced.
Further, since the lead can be made large, the rebar connection work becomes easy, and the workability can be further improved.
【００４０】請求項７のようにすれば、カプラー及びロ
ックナットを一度に製造でき、また簡単な作業で圧着面
とブリッジとを精度良く形成できるので、製造コストを
低減することができる。According to the seventh aspect, the coupler and the lock nut can be manufactured at one time, and the crimping surface and the bridge can be accurately formed by a simple operation, so that the manufacturing cost can be reduced.
【００４１】請求項８のようにすれば、螺合、螺進作業
を、カプラーとロックナットとを一体のものとして行え
るので、鉄筋を連結する際の作業性を改善できる。According to the eighth aspect, since the screwing and screwing operations can be performed by integrating the coupler and the lock nut, the workability in connecting the reinforcing bars can be improved.
【図１】カプラー及びロックナットを退避させた状態で
の第１実施形態の一部断面図である。FIG. 1 is a partial cross-sectional view of a first embodiment with a coupler and a lock nut retracted.
【図２】カプラーを両雄ねじ部に跨らせた状態での第１
実施形態の一部断面図である。FIG. 2 shows a first state in which a coupler is straddled by both male screw portions.
It is a partial sectional view of an embodiment.
【図３】図１のＡ−Ａ線断面図である。FIG. 3 is a sectional view taken along line AA of FIG. 1;
【図４】図１のＢ−Ｂ線断面図である。FIG. 4 is a sectional view taken along line BB of FIG. 1;
【図５】カプラーを両雄ねじ部に跨らせた状態での第２
実施形態の一部断面図である。FIG. 5 shows a second state in which the coupler is straddled by both male screw portions.
It is a partial sectional view of an embodiment.
【図６】カプラーを両雄ねじ部に跨らせた状態での第３
実施形態の一部断面図である。FIG. 6 shows a third state in which the coupler is straddled by both male screw portions.
It is a partial sectional view of an embodiment.
【図７】図６のＣ−Ｃ線断面図である。FIG. 7 is a sectional view taken along line CC of FIG. 6;
【図８】図６のＤ−Ｄ線断面図である。FIG. 8 is a sectional view taken along line DD of FIG. 6;
【図９】従来例を説明するための図１相当図である。FIG. 9 is a diagram corresponding to FIG. 1 for explaining a conventional example.
１ 第１鉄筋（増設側） ２ 第２鉄筋（既設側） ３ 第１雄ねじ部 ４ 第２雄ねじ部 ５ カプラー ６ 雌ねじ部 ７ 第１ロックナット ８ 第２ロックナット ９ 第１雌ねじ部 １０ 第２雌ねじ部 １１ ブリッジ １２ ブリッジ １３ トルク設定ブリッジ ２０ 筒状部 ２５ 圧着面 ２７ 圧着面 DESCRIPTION OF SYMBOLS 1 1st reinforcing bar (extension side) 2 2nd reinforcing bar (existing side) 3 1st male screw part 4 2nd male screw part 5 Coupler 6 Female screw part 7 1st lock nut 8 2nd lock nut 9 1st female screw part 10 2nd female screw Part 11 Bridge 12 Bridge 13 Torque setting bridge 20 Cylindrical part 25 Crimp surface 27 Crimp surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 下橋 清美 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 平井 克彦 大阪府枚方市磯島南町13番１号 日本カタ ン株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kiyomi Shimohashi 13-1, Isojima Minamicho, Hirakata City, Osaka Prefecture Inside of Katana Corporation (72) Inventor Katsuhiko Hirai 13-1, Isojima Minamicho, Hirakata City, Osaka Prefecture Nippon Kata Inc.
Claims (8)
（２）との端部にそれぞれ第１雄ねじ部（３）と第２雄
ねじ部（４）とを設け、第１ロックナット（７）と、内
部に雌ねじ部（６）を有した筒形のカプラー（５）とを
上記第１鉄筋（１）の第１雄ねじ部（３）に螺合し、第
２ロックナット（８）を螺合した状態の第２鉄筋（２）
の第２雄ねじ部（４）に向けてカプラー（５）を螺進
し、その雌ねじ部（６）を双方の鉄筋（１）（２）の各
雄ねじ部（３）（４）に螺合した状態において、各雄ね
じ部（３）（４）に螺合したロックナット（７）（８）
をそれぞれ上記カプラー（５）に圧着させるようにした
機械式鉄筋継手において、上記第１ロックナット（７）
とカプラー（５）とは、両者（５）（７）の雌ねじ部
（６）（９）のピッチが連続するように配置すると共
に、両者（５）（７）を、手動工具のトルクを受けて破
断する程度の強度を有したブリッジ（１１）を介して連
結したことを特徴とする機械式鉄筋継手。1. A first male nut (3) and a second male thread (4) are provided at ends of a first reinforcing bar (1) and a second reinforcing bar (2) to be connected, respectively, and a first lock nut is provided. (7) and a cylindrical coupler (5) having a female screw portion (6) therein are screwed into the first male screw portion (3) of the first reinforcing bar (1), and the second lock nut (8) is screwed. ) Is screwed onto the second reinforcing bar (2)
The coupler (5) was screwed toward the second male screw part (4), and the female screw part (6) was screwed into each male screw part (3) (4) of both rebars (1) and (2). In the state, the lock nuts (7) and (8) screwed into the male screw portions (3) and (4), respectively.
In the mechanical rebar joint in which the first lock nut (7) is pressed against the coupler (5), respectively.
And the coupler (5) are arranged so that the pitches of the female screw portions (6) and (9) of the two (5) and (7) are continuous, and receive the torque of the manual tool with the two (5) and (7). A mechanical rebar joint characterized in that it is connected via a bridge (11) having such a strength as to be broken.
（２）との端部にそれぞれ第１雄ねじ部（３）と第２雄
ねじ部（４）とを設け、第１ロックナット（７）と、内
部に雌ねじ部（６）を有した筒形のカプラー（５）とを
上記第１鉄筋（１）の第１雄ねじ部（３）に螺合し、第
２ロックナット（８）を螺合した状態の第２鉄筋（２）
の第２雄ねじ部（４）に向けてカプラー（５）を螺進
し、その雌ねじ部（６）を双方の鉄筋（１）（２）の各
雄ねじ部（３）（４）に螺合した状態において、各雄ね
じ部（３）（４）に螺合したロックナット（７）（８）
をそれぞれ上記カプラー（５）に圧着させるようにした
機械式鉄筋継手において用いる継手構成部材であって、
上記第１ロックナット（７）とカプラー（５）とから成
り、両者（５）（７）を、その雌ねじ部（６）（９）の
ピッチが連続するように配置すると共に、両者（５）
（７）を、手動工具のトルクを受けて破断する程度の強
度を有したブリッジ（１１）を介して連結したことを特
徴とする継手構成部材。2. A first male nut (3) and a second male screw (4) are provided at ends of a first reinforcing bar (1) and a second reinforcing bar (2) to be connected, respectively, and a first lock nut is provided. (7) and a cylindrical coupler (5) having a female screw portion (6) therein are screwed into the first male screw portion (3) of the first reinforcing bar (1), and the second lock nut (8) is screwed. ) Is screwed onto the second reinforcing bar (2)
The coupler (5) was screwed toward the second male screw part (4), and the female screw part (6) was screwed into each male screw part (3) (4) of both rebars (1) and (2). In the state, the lock nuts (7) and (8) screwed into the male screw portions (3) and (4), respectively.
Are used in mechanical rebar joints each of which is press-bonded to the coupler (5),
It consists of the first lock nut (7) and the coupler (5). The two (5) and (7) are arranged so that the pitches of the female screw portions (6) and (9) are continuous.
(7) A joint component, wherein the component (7) is connected via a bridge (11) having such a strength as to be broken by receiving a torque of a manual tool.
向に２分割され、これらの間がトルク設定ブリッジ（１
３）を介して連結されており、このトルク設定ブリッジ
（１３）の破断強度が、上記ブリッジ（１１）の破断強
度よりも高く、かつ第１ロックナット（７）をカプラー
（５）に圧着させるに適した規定トルクに対応して設定
されていることを特徴とする請求項１の機械式鉄筋継手
又は請求項２の継手構成部材。3. The first lock nut (7) is divided into two parts in the direction of the rotation axis, and a torque setting bridge (1) is provided therebetween.
3), the breaking strength of the torque setting bridge (13) is higher than the breaking strength of the bridge (11), and the first lock nut (7) is crimped to the coupler (5). The mechanical reinforcing joint according to claim 1 or the joint constituting member according to claim 2, wherein the joint is set so as to correspond to a prescribed torque suitable for the joint.
（５）とにおいては、軸方向に相対向する端部に環状の
圧着面（２７）（２５）がそれぞれ形成されており、こ
の圧着面（２７）（２５）は上記雌ねじ部（６）（９）
の谷よりも外周側に位置すると共に、この圧着面（２
７）（２５）の内周側で、かつ上記雌ねじ部（６）
（９）の谷よりも外周側の位置に上記ブリッジ（１１）
が設けられていることを特徴とする請求項１〜請求項３
のいずれかの機械式鉄筋継手又は継手構成部材。4. The first lock nut (7) and the coupler (5) have annular crimping surfaces (27) and (25) formed at axially opposite ends, respectively. The surfaces (27) and (25) are the female screw portions (6) and (9)
Is located on the outer peripheral side of the valley, and this crimping surface (2
7) On the inner peripheral side of (25) and the internal thread portion (6)
The bridge (11) is located on the outer peripheral side of the valley of (9).
Is provided.
Any of the mechanical rebar joints or joint components.
ー（５）と第２ロックナット（８）との間にも設けられ
ていることを特徴とする請求項１〜請求項４のいずれか
の機械式鉄筋継手又は継手構成部材。5. The device according to claim 1, wherein a bridge similar to the above is provided between the coupler and the second lock nut. Mechanical rebar joints or joint components.
（７）（８）を鋳造によって形成すると共に、各雄ねじ
部（３）（４）及び各雌ねじ部（６）（９）（１０）を
台形ねじとしたことを特徴とする請求項１〜請求項５の
いずれかの機械式鉄筋継手又は継手構成部材。6. The coupler (5) and the lock nuts (7) (8) are formed by casting, and each of the male screw portions (3) (4) and each of the female screw portions (6) (9) (10) is trapezoidal. The mechanical rebar joint or the joint component according to any one of claims 1 to 5, wherein the joint is a screw.
に際し、上記第１ロックナット（７）とカプラー（５）
との相対向する端部となる部分を、雌ねじ部（６）
（９）よりも外周側に位置する筒状部（２０）で全周に
わたって連結すると共に、筒状部（２０）の内周部に
は、上記雌ねじ部（６）（９）よりも外周側に位置する
複数条の突条（１１）を軸方向に延設して成る筒状素材
を鋳造により一体成形しておき、その後、ねじ軸と平行
な回転軸を有するカッターで上記筒状部（２０）を、上
記突条（１１）を残して全周にわたって切断し、これに
より上記圧着面（２５）（２７）と上記ブリッジ（１
１）とを形成することを特徴とする継手構成部材の製造
方法。7. The first lock nut (7) and the coupler (5) for manufacturing the joint component according to claim 4.
The part which becomes the opposite end with the female screw part (6)
The cylindrical portion (20) located on the outer peripheral side with respect to (9) is connected over the entire circumference, and the inner peripheral portion of the cylindrical portion (20) is located on the outer peripheral side with respect to the female screw portions (6) and (9). Is integrally formed by casting a cylindrical material formed by extending a plurality of ridges (11) extending in the axial direction, and thereafter, the cylindrical portion is formed by a cutter having a rotation axis parallel to a screw axis. 20) is cut along the entire circumference except for the ridges (11), whereby the crimping surfaces (25) and (27) and the bridge (1) are cut.
1) The method for producing a joint component member, wherein
の両者にカプラー（５）を螺合させ、上記各雄ねじ部
（３）（４）に螺合したロックナット（７）（８）をカ
プラー（５）の両側に圧着させて成る機械式鉄筋継手に
おいて用いる継手構成部材であって、上記カプラー
（５）と、少なくともいずれか一方のロックナット
（７）とを、その雌ねじ部（６）（９）のピッチが連続
するように配置すると共に、両者（５）（７）を、手動
工具のトルクを受けて破断する程度の強度を有したブリ
ッジ（１１）を介して連結したことを特徴とする継手構
成部材。8. A pair of male threads (3) (4) to be connected
A mechanical rebar joint formed by screwing a coupler (5) onto both of them, and pressing lock nuts (7) and (8) screwed on the male screw portions (3) and (4) onto both sides of the coupler (5). Wherein the coupler (5) and at least one of the lock nuts (7) are arranged such that the pitches of the female screw portions (6) and (9) are continuous. (5) A joint component, wherein (7) is connected via a bridge (11) having such a strength as to be broken by receiving the torque of a manual tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8241392A JPH1061107A (en) | 1996-08-23 | 1996-08-23 | Mechanical type reinforcing bar coupler, coupler composing member and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8241392A JPH1061107A (en) | 1996-08-23 | 1996-08-23 | Mechanical type reinforcing bar coupler, coupler composing member and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1061107A true JPH1061107A (en) | 1998-03-03 |
Family
ID=17073607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8241392A Pending JPH1061107A (en) | 1996-08-23 | 1996-08-23 | Mechanical type reinforcing bar coupler, coupler composing member and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1061107A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101036594B1 (en) | 2011-01-26 | 2011-05-24 | 김병섭 | Reinforcing bar coupler |
| JP2011132773A (en) * | 2009-12-25 | 2011-07-07 | Fuji Bolt Seisakusho:Kk | Joint structure of reinforcing bars |
| KR20130099840A (en) * | 2012-02-29 | 2013-09-06 | 도쿄 데코 가부시키가이샤 | Reinforcing bar connecting device and reinforcing bar connecting method |
| JP2016176229A (en) * | 2015-03-19 | 2016-10-06 | 株式会社ディビーエス | Reinforcement joint, and steel bar and sleeve |
| JP2021113489A (en) * | 2020-01-16 | 2021-08-05 | コソン カンパニー リミテッド | Irregular shape steel bar tie metal |
-
1996
- 1996-08-23 JP JP8241392A patent/JPH1061107A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011132773A (en) * | 2009-12-25 | 2011-07-07 | Fuji Bolt Seisakusho:Kk | Joint structure of reinforcing bars |
| KR101036594B1 (en) | 2011-01-26 | 2011-05-24 | 김병섭 | Reinforcing bar coupler |
| KR20130099840A (en) * | 2012-02-29 | 2013-09-06 | 도쿄 데코 가부시키가이샤 | Reinforcing bar connecting device and reinforcing bar connecting method |
| JP2013181279A (en) * | 2012-02-29 | 2013-09-12 | Tokyo Tekko Co Ltd | Reinforcement connector and reinforcement connection method |
| JP2016176229A (en) * | 2015-03-19 | 2016-10-06 | 株式会社ディビーエス | Reinforcement joint, and steel bar and sleeve |
| JP2021113489A (en) * | 2020-01-16 | 2021-08-05 | コソン カンパニー リミテッド | Irregular shape steel bar tie metal |
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