JP2010209562A - Binding structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such problems that a ready-made binding implement employs a large number of components, has a complicated constitution, and is expensive. <P>SOLUTION: This binding structure includes studs (1a and 1b), tube bolts (2a and 2b), and a binding member (3). The studs comprise shanks (11a and 11b) and heads (12a and 12b), respectively; and one-side ends of the shanks (11a and 11b) are embedded in bodies (51a and 51b) to be bound, and exposed in such a manner as to face connecting grooves (52a and 52b) formed in the bodies (51a and 51b), together with the heads (12a and 12b), the shanks (11a and 11b), and the tube bolts (2a and 2b). External threads (22a and 22b) opposite to each other are cut on the outer peripheral surfaces of the tube bolts (2a and 2b), respectively. The binding member (3) is screwed in a turnbuckle manner to each of the different bolts (2a and 2b) via reversely-directed internal threads (31a and 31b) at both ends; and its own turning brings both the tube bolts (2a and 2b) closer to each other, so that the bodies (51a and 51b) can be bound to each other in a state in which the tube bolts (2a and 2b) get closest to each other in the binding member (3). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、被緊結体、例えばコンクリート製品、相互を緊密に結合する緊結構造に関する。   The present invention relates to an object to be fastened, for example, a concrete product, and a tight structure for tightly bonding each other.

コンクリート製品相互を連結するための連結金具は種々開発されている。例えば特開２０００−１７９０５３では、符号１００で連結金具が示されており、第１締結部材１０、第２締結部材２０、係止ナット３０及び２つの保持ナット４０が採用されている。
特開２０００−１７９０５３ Various connection fittings for connecting concrete products to each other have been developed. For example, in Japanese Patent Laid-Open No. 2000-179053, reference numeral 100 indicates a connection fitting, and a first fastening member 10, a second fastening member 20, a locking nut 30 and two holding nuts 40 are employed.
JP 2000-179053 A

この特許文献に記載された発明は、部品点数が多く、構成が複雑で簡便な使用ができず、高価となり、単価の低いコンクリート製品には向かない。そこで、本発明は被緊結体相互を簡単にかつ緊密に結合する緊結構造を提供することを目的とする。   The invention described in this patent document has a large number of parts, has a complicated structure, cannot be used easily, is expensive, and is not suitable for a concrete product with a low unit price. In view of the above, an object of the present invention is to provide a tightening structure that easily and tightly couples the objects to be fastened together.

（請求項１）本発明に係る緊結構造は、一対のスタッドと、一対の筒ボルトと、緊結部材を有している。該一対のスタッドはそれぞれ軸部と頭部を備え、該軸部の一端部は各別の被緊結体に埋設され、該頭部は該軸部の他端部と共に該被緊結体に形成された各別の連結溝に臨出している。該一対の筒ボルトはそれぞれ回転用部を有し、かつ外面に互いに逆向きの雄ねじが切られ、該スタッドの該軸部に各別に緩合している。該緊結部材は筒状で両端部に該一対の筒ボルトの逆向きの雄ねじに各別に螺合する逆向きの雌ねじが切られている。そして、該緊結部材内での両筒ボルトの最接近状態で被緊結体が緊結されている。 (Claim 1) A fastening structure according to the present invention includes a pair of studs, a pair of cylindrical bolts, and a fastening member. Each of the pair of studs includes a shaft portion and a head portion, and one end portion of the shaft portion is embedded in each other fastened body, and the head portion is formed on the fastened body together with the other end portion of the shaft portion. It protrudes to each separate connecting groove. Each of the pair of cylindrical bolts has a rotating portion, and external threads are cut in opposite directions on the outer surface, and are loosely engaged with the shaft portion of the stud. The binding member has a cylindrical shape, and opposite female threads that are respectively screwed into opposite male threads of the pair of cylindrical bolts are cut at both ends. And the to-be-tightened body is fastened in the closest state of both cylinder bolts in the fastening member.

スタッドは被緊結体同士の緊結に際し大きな軸力がかかるので、軸部の一端部は被緊結体中に抜け出ないように埋設されており、抜け抵抗を大きくするため、異形棒鋼を採用したり、軸部端を曲げてＬ型やＵ型としたり、端部を圧縮して平板状のアンカーを形成したり、更には軸部にこれと直角方向の透孔を穿って抵抗棒を嵌合したりしている。そして、この軸部の他端部は被緊結体に形成された連結溝に頭部及び筒ボルトと共に臨出している。   Since a large axial force is applied when the studs are fastened to each other, one end of the shaft is embedded so as not to come out in the fastened body, and a deformed steel bar is used to increase the pulling resistance. Bend the end of the shaft to make it L-shaped or U-shaped, compress the end to form a flat anchor, and further drill a through hole in the direction perpendicular to the shaft to fit a resistance rod It is. The other end portion of the shaft portion protrudes together with the head portion and the cylinder bolt into a connecting groove formed in the member to be fastened.

各筒ボルトに形成された回転用部は、各筒ボルトを緊結部材と螺合する際、各筒ボルトを軸部上で自由に回転させるためのものである。   The rotation portion formed on each cylinder bolt is for freely rotating each cylinder bolt on the shaft portion when each cylinder bolt is screwed to the fastening member.

緊結部材はねじ孔が貫通した筒状体で、このねじ孔は両端部で互いに逆向きとなる雌ねじが切られ、ターンバックルの機能を果たす。一方の雌ねじは前記の筒ボルトの雄ねじに螺合する。他方の雌ねじは、連結される相手側の被緊結体から突き出たスタッドの軸部に緩合した同様の筒ボルトの反対向きの雄ねじに、螺合するようになっている。   The binding member is a cylindrical body through which a screw hole passes, and the screw hole is cut off by female threads that are opposite to each other at both ends, thereby fulfilling the function of a turnbuckle. One female screw is screwed to the male screw of the cylinder bolt. The other female screw is adapted to be screwed into a male screw in the opposite direction of a similar cylinder bolt loosely fitted to the shaft portion of the stud protruding from the mating member to be connected.

緊結するべき一対の被緊結体の連結溝を対向させ、それぞれのスタッドの軸部に緩合した筒ボルトに緊結部材の各端部をそれぞれ螺合し、この緊結部材を一方へ回転して行く。緊結部材の回転に伴い、両筒ボルトが互いに引き寄せられ、遂に被緊結体同士が密接する。更に緊結部材を回転すれば両被緊結体同士が緊結される。
部品点数はスタッド２本、筒ボルト２個、緊結部材１個の５点で済み、極めて少ない点数となる。 The connecting grooves of a pair of objects to be tightened are opposed to each other, each end of the tightening member is screwed into a cylindrical bolt loosely fitted to the shaft portion of each stud, and the tightening member is rotated to one side. . As the tightening member rotates, both cylinder bolts are pulled toward each other, and finally the objects to be tightened come into close contact with each other. Further, if the fastening member is rotated, both the fastened bodies are fastened.
The number of parts is five points including two studs, two cylindrical bolts, and one fastening member, and the number of parts is extremely small.

（請求項２）該連結溝は、それぞれ緊結用の接続面及び該接続面と角度をなして続く操作面で、外部に開口していてもよい。
こうすると、スタッドが該連結溝に臨出するので、筒ボルトに対する緊結部材の螺合操作が接続面を通して行える。 (Claim 2) Each of the connecting grooves may be opened to the outside at a connection surface for fastening and an operation surface that forms an angle with the connection surface.
In this case, since the stud protrudes into the connecting groove, the screwing operation of the fastening member to the cylinder bolt can be performed through the connection surface.

（請求項３）該スタッドの該頭部の端面は該連結溝の該接続面の近傍に届いていてもよい。
こうすると、緊結する相手方との頭部間の間隔が狭くなり、緊結部材の軸長を短くできるので、締結力の作用線を一直線上に近づけることができ、確実な締結を果たせる。 (Claim 3) The end surface of the head of the stud may reach the vicinity of the connection surface of the coupling groove.
In this way, the distance between the heads with the partner to be tightened is narrowed, and the axial length of the tightening member can be shortened, so that the action line of the tightening force can be brought close to a straight line and reliable fastening can be achieved.

（請求項４）該スタッドの該軸部の該他端部はテーパー面を介して該頭部に続いていてもよい。
こうすると、筒ボルトは緊結部材による締め付け力を受けると、軸孔の端縁がこのテーパー面に当接し、締め付け力の作用線が筒ボルトの軸線と多少ずれてもこのテーパー面上を移動して調節し、円滑な伝達を果たす。 (Claim 4) The other end portion of the shaft portion of the stud may continue to the head portion through a tapered surface.
In this way, when the cylinder bolt receives a tightening force from the tightening member, the end of the shaft hole abuts against this tapered surface, and even if the line of action of the tightening force slightly deviates from the axis of the cylinder bolt, it moves on this tapered surface. Adjust to achieve smooth communication.

（請求項５）該筒ボルトは該頭部と当接する面が、該テーパー面に適合するテーパー面となっていてもよい。
こうすると、筒ボルトに締め付け力が作用したとき、筒ボルトとスタッドの頭部はテーパー面で接触するので、応力の分散ができ、頭部の損傷を防げる。 (Claim 5) The surface of the cylindrical bolt that contacts the head may be a tapered surface that conforms to the tapered surface.
In this case, when a tightening force is applied to the cylinder bolt, the cylinder bolt and the head of the stud are in contact with each other with a tapered surface, so that stress can be dispersed and damage to the head can be prevented.

（請求項６）該筒ボルトの該回転用部は周壁面に開口する放射状孔であってもよい。
こうすると、安価な円筒を採用し、これに孔を開けるだけで回転用部を形成でき、放射状孔に棒材を差し込んでこの棒材を該筒ボルトの軸線の回りに回動させれば、筒ボルトを簡単に回転でき、レンチ等の特別な工具は不要となる。 (Claim 6) The rotating portion of the cylindrical bolt may be a radial hole opened in the peripheral wall surface.
In this way, by adopting an inexpensive cylinder, it is possible to form a rotating part simply by drilling a hole in this, if a rod is inserted into the radial hole and this rod is rotated around the axis of the cylinder bolt, The cylinder bolt can be easily rotated, and a special tool such as a wrench is not required.

（請求項７）該一対の筒ボルトは、それぞれの全長にわたる軸線と平行の割溝でその軸孔が側面にも開放し、該割溝を通して該スタッドの該軸部に各別に嵌合自在となっていてもよい。
こうすると、筒ボルトをスタッドの軸部に、その側面から割溝を通して緩合することができ、緩合状態で筒ボルトを軸部の周りに自由に回転することができ、緊結作業を円滑にできる。 (Claim 7) The pair of cylindrical bolts are split grooves parallel to the axial line of each length, the shaft holes open to the side surfaces, and can be individually fitted to the shaft portions of the studs through the split grooves. It may be.
In this way, the cylinder bolt can be loosely engaged with the shaft portion of the stud through the split groove from the side surface, and the tube bolt can be freely rotated around the shaft portion in the loosely engaged state, and the tightening work can be smoothly performed. it can.

(請求項８)該割溝の溝幅は該スタッドの該軸部の外径より大きく、該軸孔の内径より小さくなっていてもよい。
こうすると、筒ボルトをスタッドの軸部に、その側面から割溝を通して緩合することができ、嵌合状態で筒ボルトを軸部の周りに自由に回転することができ、緊結作業を円滑にできる。 (Claim 8) The groove width of the split groove may be larger than the outer diameter of the shaft portion of the stud and smaller than the inner diameter of the shaft hole.
In this way, the cylindrical bolt can be loosely fitted to the stud shaft from the side through the split groove, and the cylindrical bolt can be freely rotated around the shaft in the fitted state, thereby making the tightening work smooth. it can.

（請求項９）該緊結部材は円筒体で、回転用部を備えていてもよい。
こうすると、価格の安い円筒体を採用でき、この回転用部に回転力を加えることにより回転操作ができる。 (Claim 9) The binding member may be a cylindrical body and may include a rotation portion.
In this way, an inexpensive cylindrical body can be adopted, and a rotating operation can be performed by applying a rotational force to the rotating portion.

(請求項１０)該緊結部材の該回転用部は周壁面に穿った透孔であってもよい。
こうすると、円筒体に孔を開ける単純な作業だけで回転用部としての透孔が形成でき、この透孔に棒材を差し込んで緊結部材をその軸線の周りに回転して筒ボルトとの螺合ができ、レンチ等の格別な工具を必要とせず、両筒ボルトの接近作業を簡単に行える。 (Claim 10) The rotating portion of the binding member may be a through hole formed in a peripheral wall surface.
In this way, a through-hole as a rotating part can be formed only by a simple operation of making a hole in the cylindrical body, and a rod is inserted into the through-hole to rotate the fastening member around its axis to screw with the cylinder bolt. It does not require a special tool such as a wrench, and the two cylinder bolts can be easily approached.

（請求項１１）該緊結部材は角筒体であってもよい。
こうすると、そのままでも回転操作ができ、余計な加工を必要としない。 (Claim 11) The binding member may be a rectangular tube.
In this way, it can be rotated as it is, and no extra machining is required.

（請求項１）本発明によれば、一対のスタッドと、一対の筒ボルトと、単一の緊結部材を採用し、被緊結体に形成した連結溝にスタッドの軸部と頭部が臨出し、この軸部に筒ボルトが緩合しており、両筒ボルトに螺合した緊結部材内で両筒ボルトが最も接近した状態で被緊結体が緊結されているので、少ない部品点数ながら、確実な緊結構造を提供できる。 (Claim 1) According to the present invention, a pair of studs, a pair of cylindrical bolts, and a single tightening member are employed, and the shaft portion and the head of the stud project in the connecting groove formed in the body to be tightened. The cylinder bolt is loosely fitted to this shaft, and the to-be-tightened body is fastened with the two cylinder bolts closest to each other in the fastening member screwed to both the cylinder bolts. Can provide a tight structure.

請求項２によれば、スタッドの頭部とそれに続く軸部が該連結溝に臨出し、この臨出した軸部に筒ボルトが緩合しているので、筒ボルトに対する緊結部材の螺合操作が接続面を通して行える。   According to the second aspect, since the head portion of the stud and the shaft portion following the stud protrude to the connecting groove, and the cylinder bolt is loosely engaged with the protruding shaft portion, the screwing operation of the fastening member to the cylinder bolt is performed. Can be done through the connection surface.

請求項３によれば、緊結する相手方との頭部間の間隔が狭くなり、緊結部材の軸長を短くできるので、緊結力の作用線を一直線上に近づけることができ、確実な緊結を果たせる。   According to the third aspect, the distance between the heads with the other party to be tightened is narrowed, and the axial length of the tightening member can be shortened, so that the line of action of the tightening force can be brought close to a straight line, and reliable tightening can be achieved. .

請求項４によれば、筒ボルトは緊結部材による締め付け力を受けると、軸孔の端縁がこのテーパー面に当接し、締め付け力の作用線が筒ボルトの軸線と多少ずれてもこのテーパー面上を移動して調節し、円滑な伝達を果たす。   According to the fourth aspect of the present invention, when the cylindrical bolt receives the tightening force by the fastening member, the end of the shaft hole comes into contact with the tapered surface, and this tapered surface even if the line of action of the tightening force slightly deviates from the axial line of the cylindrical bolt. Move and adjust up for smooth transmission.

請求項５によれば、筒ボルトに締め付け力が作用したとき、筒ボルトとスタッドの頭部はテーパー面で接触するので、応力の分散ができ、頭部の損傷を防げる。   According to the fifth aspect, when a tightening force is applied to the cylinder bolt, the cylinder bolt and the head of the stud come into contact with each other with a tapered surface, so that stress can be dispersed and damage to the head can be prevented.

請求項６によれば、筒ボルトの該回転用部は周壁面に開口する放射状孔なので、廉価な筒材を採用でき、棒材をこの放射状孔に差し込んで筒ボルトの軸線の周りに回転させれば、筒ボルトを簡単に回転でき、緊結部材との螺合も容易にできる。   According to the sixth aspect, since the rotating portion of the cylindrical bolt is a radial hole opening in the peripheral wall surface, an inexpensive cylindrical material can be adopted, and a rod is inserted into the radial hole and rotated around the axis of the cylindrical bolt. Then, the cylinder bolt can be easily rotated and can be easily screwed with the fastening member.

請求項７によれば、筒ボルトをスタッドの軸部に、その側面から割溝を通して緩合することができ、緩合状態で筒ボルトを軸部の周りに自由に回転することができ、緊結作業を円滑にできる。   According to the seventh aspect, the cylindrical bolt can be loosely fitted to the shaft portion of the stud from the side surface through the split groove, and the cylindrical bolt can be freely rotated around the shaft portion in the loosened state. Work can be done smoothly.

請求項８によれば、筒ボルトを軸部に緩合するのが容易で、一端緩合してしまえば簡単に外れることがない。   According to the eighth aspect, it is easy to loosely engage the cylinder bolt with the shaft portion, and once it is loosely engaged, it does not come off easily.

請求項９によれば、該緊結部材は円筒体で、回転用部を備えているので、価格の安い円筒体を採用でき、この回転用部に回転力を加えることにより回転操作ができる。   According to the ninth aspect of the present invention, since the fastening member is a cylindrical body and includes a rotation portion, a low-priced cylindrical body can be employed, and the rotation operation can be performed by applying a rotational force to the rotation portion.

請求項１０によれば、円筒体に孔を開ける単純な作業だけで回転用部としての透孔が形成でき、この透孔に棒材を差し込んで緊結部材をその軸線の周りに回転して筒ボルトとの螺合ができ、レンチ等の格別な工具を必要とせず、両筒ボルトの接近作業を簡単に行える。   According to the tenth aspect, the through-hole as the rotating portion can be formed only by a simple operation of making a hole in the cylindrical body, and the rod member is inserted into the through-hole to rotate the fastening member around its axis to form the cylinder. The bolt can be screwed together, and no special tool such as a wrench is required, and the work of approaching the two cylinder bolts can be performed easily.

請求項１１によれば、そのままでも回転操作ができ、余計な加工を必要としない。   According to the eleventh aspect, the rotation operation can be performed as it is, and no extra machining is required.

本発明にかかる緊結構造の具体例を示す断面図である。It is sectional drawing which shows the specific example of the fastening structure concerning this invention. スタッドの頭部及びそれに続く軸部の側面図である。It is a side view of the head of a stud and the axial part following it. 筒ボルトの半分切断側面図である。It is a half cut side view of a cylinder bolt. 別の形式の筒ボルトの半分切断側面図である。It is a half cut side view of another form of cylindrical bolts. 図４の筒ボルトの割溝を正面にして見た側面図である。It is the side view which looked at the split groove of the cylinder bolt of FIG. 緊結部材の半分切断側面図である。It is a half cut side view of a binding member. スタッド、筒ボルト及び六角筒型緊結部材の締結時の位置関係を示す切断斜面図である。It is a cutting slope figure which shows the positional relationship at the time of fastening of a stud, a cylinder bolt, and a hexagonal cylinder type fastening member.

以下に本発明に係る緊結構造の具体例を、図面を参照して、説明する。なお、以下の図面中で、スタッドや筒ボルトのように同様構成の一対の部品については、その一方だけ図示し、他方を省略したものがあり、この場合、説明文の頭書に図面番号を記載する。
図１は緊結構造を示す一部切断正面図、図２はスタッドの頭部部分の側面図、図３筒ボルトの半分断面図、図４は別の態様の筒ボルトの半分断面図、図５はこの筒ボルトを割溝側から見た側面図、図６は緊結部材の半分断面図、図７はスタッド、筒ボルト及び緊結部材の結合状態を示す切断斜面図である。 Hereinafter, specific examples of the fastening structure according to the present invention will be described with reference to the drawings. In addition, in the following drawings, a pair of parts having the same configuration, such as studs and cylinder bolts, is shown with only one of them, and the other is omitted. In this case, the drawing number is described in the head of the description. To do.
1 is a partially cut front view showing a tightening structure, FIG. 2 is a side view of a head portion of a stud, FIG. 3 is a half sectional view of a cylinder bolt, and FIG. 4 is a half sectional view of another embodiment of a cylinder bolt. Fig. 6 is a side view of the cylindrical bolt as viewed from the dividing groove side, Fig. 6 is a half sectional view of the fastening member, and Fig. 7 is a cut slope view showing a coupled state of the stud, the cylindrical bolt and the fastening member.

（請求項１）本発明に係る緊結構造は緊結用の部材として一対のスタッド１ａと１ｂ、一対の筒ボルト２ａと２ｂ及び緊結部材３を有している。一対のスタッド１ａと１ｂはそれぞれ軸部１１ａ、１１ｂと頭部１２ａ、１２ｂを備え、軸部１１ａ、１１ｂの一端部は例えばコンクリート製品である被緊結体５１ａ、５１ｂに各別に埋設され、頭部１２ａ、１２ｂは軸部１１ａ、１１ｂの他端部と及び筒ボルトと共に被緊結体５１ａ、５１ｂに形成された各別の連結溝５２ａ、５２ｂに臨出している。 (Claim 1) The fastening structure according to the present invention includes a pair of studs 1a and 1b, a pair of cylindrical bolts 2a and 2b, and a fastening member 3 as members for fastening. The pair of studs 1a and 1b includes shaft portions 11a and 11b and head portions 12a and 12b, respectively, and one end portions of the shaft portions 11a and 11b are individually embedded in fastened bodies 51a and 51b, which are concrete products, for example. 12a and 12b protrude to the respective connecting grooves 52a and 52b formed in the fastened bodies 51a and 51b together with the other ends of the shaft portions 11a and 11b and the cylinder bolt.

スタッド１ａと１ｂはそれぞれ被緊結体５１ａや５１ｂからの抜け抵抗を大きくする必要がある。そのため、異形鉄筋を用いたり、図示は省略したが、被緊結体５１ａや５１ｂに埋設される部分をＬ型やＵ型に屈曲させたり、プレスによりプレート状のアンカーを形成したり、軸直角の透孔を穿って串を挿通したりしている。   The studs 1a and 1b are required to increase the resistance to coming off from the fastened bodies 51a and 51b, respectively. Therefore, although deformed reinforcing bars are used, illustration is omitted, but the portion embedded in the to-be-tightened bodies 51a and 51b is bent into an L shape or a U shape, a plate-like anchor is formed by pressing, A skewer is inserted through a through hole.

一対の筒ボルト２ａ、２ｂはそれぞれ回転用部２１ａ、２１ｂを有し、かつ外面に互いに逆向きの雄ねじ２２ａ、２２ｂが切られている。   The pair of cylindrical bolts 2a and 2b have rotation portions 21a and 21b, respectively, and external threads 22a and 22b opposite to each other are cut on the outer surfaces.

緊結部材３は筒状で両端部に、一対の筒ボルト２ａ、２ｂの逆向きの雄ねじ２２ａ、２２ｂに各別に螺合する逆向きの雌ねじ３１ａ、３１ｂが切られている。   The binding member 3 has a cylindrical shape, and opposite female screws 31a and 31b that are respectively screwed into opposite male screws 22a and 22b of the pair of cylindrical bolts 2a and 2b are cut at both ends.

そして、緊結部材３を一対のスタッド１ａ、１ｂの軸部１１ａ、１１ｂに緩合している一対の筒ボルト２ａ、２ｂに螺合して回転することにより両スタッド１ａ、１ｂを近づけて被緊結体５１ａ、５１ｂを緊結するようになっている。   Then, the stud member 1a, 1b is brought close to each other by tightening the tight member 3 to a pair of cylindrical bolts 2a, 2b loosely fitted to the shaft portions 11a, 11b of the pair of studs 1a, 1b. The bodies 51a and 51b are fastened together.

緊結するべき１対の被緊結体５１ａと５１ｂの連結溝５２ａと５２ｂを対向させる。それぞれのスタッド１ａと１ｂの軸部１１ａと１１ｂの各他端部に、それぞれ反対向きの雄ねじ２２ａと２２ｂの切られた筒ボルト２ａと２ｂが、各別に緩合している。   The connecting grooves 52a and 52b of the pair of objects to be tightened 51a and 51b to be tightened are opposed to each other. Cylindrical bolts 2a and 2b with oppositely threaded male screws 22a and 22b are loosely fitted to the other end portions of the shaft portions 11a and 11b of the studs 1a and 1b, respectively.

緊結部材３の各端部をそれぞれの筒ボルト２ａと２ｂに螺合し、この緊結部材３を一方へ回転して行く。緊結部材３の回転に伴い、両筒ボルト２ａと２ｂが互いに引き寄せられ、遂に被緊結体５１ａと５１ｂ同士が密接する。更に緊結部材３を回転すれば、両筒ボルト２ａと２ｂが最も接近した状態で両被緊結体５１ａと５１ｂ同士が緊結される。
部品点数はスタッド１ａ及び１ｂの２本、筒ボルト２ａ及び２ｂの２個、緊結部材３が１個の５点で済み、極めて少ない点数となる。 Each end portion of the fastening member 3 is screwed into the respective cylinder bolts 2a and 2b, and the fastening member 3 is rotated to one side. As the tightening member 3 rotates, the two cylinder bolts 2a and 2b are attracted to each other, and finally the members to be tightened 51a and 51b come into close contact with each other. If the tightening member 3 is further rotated, both the to-be-tightened bodies 51a and 51b are fastened together with the two cylinder bolts 2a and 2b being closest to each other.
The number of parts is two points of the studs 1a and 1b, two of the cylindrical bolts 2a and 2b, and the fastening member 3 is five points, and the number is very small.

（請求項２）連結溝５２ａと５２ｂは、それぞれ緊結用の接触面５３ａと５３ｂ及び、それぞれの接触面と角度をなして続く操作面５４ａと５４ｂで、外部に開口している。
この場合、スタッド１ａの頭部１２ａ、それに続く軸部１１ａ及び筒ボルト２ａが連結溝５２ａに臨出し、またスタッド１ｂの頭部１２ｂ、それに続く軸部１１ｂ及び筒ボルト２ｂが連結溝５２ｂに臨出するので、筒ボルト２ａや２ｂに対する緊結部材３の螺合操作が操作面５４ａ及び５４ｂを通して行え、作業がし易い。 (Claim 2) The connecting grooves 52a and 52b are opened to the outside at the contact surfaces 53a and 53b for fastening and the operation surfaces 54a and 54b that make an angle with the contact surfaces, respectively.
In this case, the head portion 12a of the stud 1a, the subsequent shaft portion 11a, and the cylindrical bolt 2a are exposed to the connecting groove 52a, and the head portion 12b of the stud 1b, and the subsequent shaft portion 11b and the cylindrical bolt 2b are exposed to the connecting groove 52b. Therefore, the screwing operation of the fastening member 3 to the cylinder bolts 2a and 2b can be performed through the operation surfaces 54a and 54b, and the operation is easy.

（請求項３）スタッド１ａ及び１ｂの頭部１２ａや１２ｂの端面はそれぞれ、連結溝５２ａや５２ｂの接触面５３ａや５３ｂの近傍に届いている。
この場合、緊結する相手方との頭部１２ａと１２ｂ間の間隔が狭くなり、緊結部材３の軸長を短くできるので、緊結力の作用線を一直線上に近づけることができ、確実な緊結を果たせる。 (Claim 3) The end surfaces of the heads 12a and 12b of the studs 1a and 1b reach the vicinity of the contact surfaces 53a and 53b of the connecting grooves 52a and 52b, respectively.
In this case, the distance between the heads 12a and 12b with the partner to be tightened is narrowed, and the axial length of the tightening member 3 can be shortened, so that the line of action of the tightening force can be brought close to a straight line, and reliable tightening can be achieved. .

（請求項４）スタッド１ａ及び１ｂの軸部１１ａや１１ｂの他端部は、それぞれテーパー面１３ａや１３ｂを介して頭部１２ａや１２ｂに続いている。
この場合、筒ボルト２ａや２ｂは緊結部材３による締め付け力を受けると、軸孔２４ａや２４ｂの端縁がテーパー面１３ａや１３ｂに当接し、締め付け力の作用線が筒ボルト２ａや２ｂの軸線と多少ずれてもこのテーパー面１３ａや１３ｂ上を移動して調節し、円滑な伝達を果たす。 (Claim 4) The other end portions of the shaft portions 11a and 11b of the studs 1a and 1b continue to the head portions 12a and 12b through the tapered surfaces 13a and 13b, respectively.
In this case, when the cylindrical bolts 2a and 2b receive the tightening force by the fastening member 3, the end edges of the shaft holes 24a and 24b abut against the tapered surfaces 13a and 13b, and the action line of the tightening force is the axial line of the cylindrical bolts 2a and 2b. Even if it deviates somewhat, it moves on the tapered surfaces 13a and 13b and adjusts to achieve smooth transmission.

（請求項５）図３で、筒ボルト２ａは頭部１２ａと当接する面が、テーパー面１３ａに適合するテーパー面２５ａとなっている。
この場合、筒ボルト２ａに締め付け力が作用したとき、筒ボルト２ａとスタッド１ａの頭部１２ａはテーパー面２５ａで接触するので、応力の分散ができ、頭部１２ａの損傷を防げる。 (Claim 5) In FIG. 3, the surface of the cylindrical bolt 2a that contacts the head 12a is a tapered surface 25a that conforms to the tapered surface 13a.
In this case, when a tightening force is applied to the cylindrical bolt 2a, the cylindrical bolt 2a and the head portion 12a of the stud 1a come into contact with each other at the tapered surface 25a, so that stress can be dispersed and damage to the head portion 12a can be prevented.

（請求項６）筒ボルト２ａや２ｂの回転用部２１ａや２１ｂは周壁面に開口する放射状孔である。
この場合、廉価な筒材を採用でき、棒材をこの放射状孔に差し込んで筒ボルト２ａや２ｂの軸線の周りに回転させれば、筒ボルト２ａや２ｂを簡単に回転でき、緊結部材３との螺合も容易にできる。 (Claim 6) The rotating portions 21a and 21b of the cylindrical bolts 2a and 2b are radial holes opened in the peripheral wall surface.
In this case, an inexpensive cylinder material can be used, and if the rod is inserted into the radial hole and rotated around the axis of the cylinder bolts 2a and 2b, the cylinder bolts 2a and 2b can be easily rotated. Can be easily screwed.

（請求項７）図４で、筒ボルト２ａはその軸線Ｘと平行の、かつこの筒ボルト２ａの全長にわたる割溝２３ａでその軸孔２４ａが側面にも開放し、この割溝２３ａを通してスタッド１ａの軸部１１ａに、側方から緩合自在となっている。
この場合、筒ボルト２ａをスタッド１ａの軸部１１ａに、その側面から割溝２３ａを通して緩合することができ、緩合状態で筒ボルト２ａを軸部１１ａの周りに自由に回転することができ、緊結作業を円滑にできる。 (Claim 7) In FIG. 4, the cylinder bolt 2a is a split groove 23a that is parallel to the axis X of the cylinder bolt 2a and extends over the entire length of the cylinder bolt 2a. The shaft portion 11a can be loosely fitted from the side.
In this case, the tubular bolt 2a can be loosely fitted to the shaft portion 11a of the stud 1a from the side surface through the split groove 23a, and the tubular bolt 2a can be freely rotated around the shaft portion 11a in the loosened state. , Tightening work can be done smoothly.

（請求項８）割溝２３ａの溝幅ｗはスタッド１ａの軸部１１ａの外径Ｄより大きく、軸孔２４ａの内径ｄより小さくなっている。
この場合、筒ボルト２ａをスタッド１ａの軸部１１ａに、それぞれの側面から割溝２３ａを通して緩合することができ、緩合状態で筒ボルト２ａを軸部１１ａの周りに自由に回転することができ、緊結作業を円滑にできる。 (Claim 8) The groove width w of the split groove 23a is larger than the outer diameter D of the shaft portion 11a of the stud 1a and smaller than the inner diameter d of the shaft hole 24a.
In this case, the cylindrical bolt 2a can be loosely fitted to the shaft portion 11a of the stud 1a through the split grooves 23a from the respective side surfaces, and the cylindrical bolt 2a can be freely rotated around the shaft portion 11a in the loosened state. Can be tightened smoothly.

（請求項９） 緊結部材３は円筒体で、回転用部３２を備えている。
この場合、価格の安い円筒体を採用でき、この回転用部３２に回転力を加えることにより回転操作ができる。 (Claim 9) The binding member 3 is a cylindrical body and includes a rotation portion 32.
In this case, a cheap cylindrical body can be employed, and rotation operation can be performed by applying a rotational force to the rotating portion 32.

（請求項１０）緊結部材３の回転用部３２は周壁面に穿った透孔である。
この場合、円筒体に孔を開ける単純な作業だけで回転用部３２としての透孔が形成でき、この透孔に棒材を差し込んで緊結部材３をその軸線の周りに回転して筒ボルト２ａや２ｂとの螺合ができ、レンチ等の格別な工具を必要としない。 (Claim 10) The rotating portion 32 of the binding member 3 is a through hole formed in the peripheral wall surface.
In this case, the through-hole as the rotation portion 32 can be formed by only a simple operation of making a hole in the cylindrical body, and a rod is inserted into the through-hole to rotate the fastening member 3 around its axis to form the cylinder bolt 2a. And 2b can be screwed together, and no special tool such as a wrench is required.

（請求項１１）図７に示すように、緊結部材３は角筒体であってもよい。
この場合、そのままでも回転操作ができるので、余計な加工を必要としない。 (Claim 11) As shown in FIG. 7, the fastening member 3 may be a rectangular tube.
In this case, since the rotation operation can be performed as it is, no extra processing is required.

１ａ、１ｂ スタッド
２ａ、２ｂ 筒ボルト
３ 緊結部材
１１ａ、１１ｂ 軸部
１２ａ、１２ｂ 頭部
１３ａ、１３ｂ テーパー面
２１ａ、２１ｂ 回転用部
２２ａ、２２ｂ 雄ねじ
２３ａ、２３ｂ 割溝
２４ａ、２４ｂ 軸孔
２５ａ、２５ｂ テーパー面
３１ａ、３１ｂ 雌ねじ
５１ａ、５１ｂ 被緊結体
５２ａ、５２ｂ 連結溝
５３ａ、５３ｂ 接触面
５４ａ、５４ｂ 操作面

1a, 1b stud
2a, 2b Tube bolt
3 Tightening material
11a, 11b Shaft part 12a, 12b Head
13a, 13b Tapered surfaces 21a, 21b Rotating parts 22a, 22b Male threads 23a, 23b Split grooves 24a, 24b Shaft holes 25a, 25b Tapered surfaces 31a, 31b Female threads 51a, 51b Tightened bodies 52a, 52b Connecting grooves 53a, 53b Contact surfaces 54a, 54b Operation surface

Claims (11)

一対のスタッド(1a,1b)と、一対の筒ボルト(2a,2b)と、緊結部材(3)を有し、
該一対のスタッド(1a,1b)はそれぞれ軸部(11a,11b)と頭部(12a,12b)を備え、該軸部(11a,11b)の一端部は各別の被緊結体(51a,51b)に埋設され、該頭部(12a,12b)は該軸部(11a,11b)の他端部と共に該被緊結体(51a,51b)に形成された各別の連結溝(52a,52b)に臨出しており、
該一対の筒ボルト(2a,2b)はそれぞれ回転用部(21a,21b)を有し、かつ外面に互いに逆向きの雄ねじ(22a,22b)が切られ、該スタッド(1a,1b)の該軸部(11a,11b)に各別に緩合しており、
該緊結部材(3)は筒状で両端部に該一対の筒ボルト(2a,2b)の逆向きの雄ねじ(22a,22b)に各別に螺合する逆向きの雌ねじ(31a,31b)が切られており、
該緊結部材(3)内での両筒ボルト(2a,2b)の最接近状態で被緊結体(51a,51b)が緊結されている
ことを特徴とする緊結構造。 A pair of studs (1a, 1b), a pair of cylindrical bolts (2a, 2b), and a fastening member (3);
Each of the pair of studs (1a, 1b) includes a shaft portion (11a, 11b) and a head portion (12a, 12b), and one end portion of the shaft portion (11a, 11b) is connected to each other fastened body (51a, 11b). 51b), the heads (12a, 12b) are connected to the respective other connecting grooves (52a, 52b) formed in the fastened bodies (51a, 51b) together with the other ends of the shafts (11a, 11b). )
The pair of cylindrical bolts (2a, 2b) each have a rotating portion (21a, 21b), and external threads (22a, 22b) opposite to each other are cut on the outer surface, and the stud (1a, 1b) It is loosely fitted to the shaft (11a, 11b) separately,
The binding member (3) is cylindrical and has opposite female screws (31a, 31b) which are respectively screwed into opposite male screws (22a, 22b) of the pair of cylindrical bolts (2a, 2b) at both ends. And
Tightened structure characterized in that the to-be-tightened bodies (51a, 51b) are fastened in the closest state of both cylinder bolts (2a, 2b) in the fastened member (3). 該連結溝(52a,52b)は、それぞれ緊結用の接続面(53a,53b)及び該接続面と角度をなして続く操作面(54a,54b)で、外部に開口している請求項１に記載の緊結構造。   The connection grooves (52a, 52b) are opened to the outside at the connection surfaces (53a, 53b) for fastening and the operation surfaces (54a, 54b) continuing at an angle with the connection surfaces, respectively. Tightened structure as described. 該スタッド(1a,1b)の該頭部(12a,12b)の端面は該連結溝(52a,52b)の該接触面(53a,53b)の近傍に届いている請求項１又は２に記載の緊結構造。   The end face of the head (12a, 12b) of the stud (1a, 1b) reaches the vicinity of the contact surface (53a, 53b) of the coupling groove (52a, 52b). Tight structure. 該スタッド(1a,1b)の該軸部(11a,11b)の該他端部はテーパー面(13a,13b)を介して該頭部(12a,12b)に続いている請求項１、２又は３に記載の緊結構造。   The other end of the shaft portion (11a, 11b) of the stud (1a, 1b) continues to the head portion (12a, 12b) via a tapered surface (13a, 13b). 3. Tightened structure according to 3. 該筒ボルト(2a,2b)は該頭部(12a,12b)と当接する面が、該テーパー面(13a,13b)に適合するテーパー面(25a,25b)となっている請求項１、２、３又は４に記載の緊結構造。   The cylindrical bolt (2a, 2b) has a tapered surface (25a, 25b) adapted to the tapered surface (13a, 13b) at a surface that contacts the head (12a, 12b). 3. Tightened structure according to 3 or 4. 該筒ボルト(2a,2b)の該回転用部(21a,21b)は周壁面に開口する放射状孔である請求項１から５の一つの項に記載の緊結構造。   The fastening structure according to any one of claims 1 to 5, wherein the rotating portions (21a, 21b) of the cylindrical bolt (2a, 2b) are radial holes opened in a peripheral wall surface. 該一対の筒ボルト(2a,2b)は、それぞれの全長にわたる軸線(X)と平行の割溝(23a,23b)でその軸孔(24a,24b)が側面にも開放し、該割溝(23a,23b)を通して該スタッド(1a,1b)の該軸部(11a,11b)に各別に緩合自在となっている請求項１から６の一つの項に記載の緊結構造。   The pair of cylindrical bolts (2a, 2b) are split grooves (23a, 23b) parallel to the axis (X) over their entire length, and the shaft holes (24a, 24b) are also opened on the side surfaces. The fastening structure according to one of claims 1 to 6, wherein the fastening structure is freely loosely fitted to the shaft portions (11a, 11b) of the studs (1a, 1b) through 23a, 23b). 該割溝(23a,23b)の溝幅(W)は該スタッド(1a,1b)の該軸部(11a,11b)の外径(D)より大きく、該軸孔(24a,24b)の内径(d)より小さくなっている請求項７に記載の緊結構造。   The groove width (W) of the split groove (23a, 23b) is larger than the outer diameter (D) of the shaft portion (11a, 11b) of the stud (1a, 1b), and the inner diameter of the shaft hole (24a, 24b). The tight structure according to claim 7, which is smaller than (d). 該緊結部材(3)は円筒体で、回転用部(32)を備えている請求項１に記載の緊結構造。   The fastening structure according to claim 1, wherein the fastening member (3) is a cylindrical body and includes a rotating portion (32). 該緊結部材(3)の該回転用部(32)は周壁面に穿った透孔である請求項９に記載の緊結構造。   The fastening structure according to claim 9, wherein the rotating part (32) of the fastening member (3) is a through hole formed in a peripheral wall surface. 該緊結部材(3)は角筒体である請求項１に記載の緊結構造。
The fastening structure according to claim 1, wherein the fastening member (3) is a rectangular tube.

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