JP4469714B2 - Connecting device and connecting device for concrete member using the same - Google Patents

Connecting device and connecting device for concrete member using the same Download PDF

Info

Publication number
JP4469714B2
JP4469714B2 JP2004373034A JP2004373034A JP4469714B2 JP 4469714 B2 JP4469714 B2 JP 4469714B2 JP 2004373034 A JP2004373034 A JP 2004373034A JP 2004373034 A JP2004373034 A JP 2004373034A JP 4469714 B2 JP4469714 B2 JP 4469714B2
Authority
JP
Japan
Prior art keywords
female
male
screw
locking member
spiral
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.)
Active
Application number
JP2004373034A
Other languages
Japanese (ja)
Other versions
JP2006145023A (en
Inventor
秀史 深谷
晃 椙山
Original Assignee
株式会社三ツ知
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社三ツ知 filed Critical 株式会社三ツ知
Priority to JP2004373034A priority Critical patent/JP4469714B2/en
Publication of JP2006145023A publication Critical patent/JP2006145023A/en
Application granted granted Critical
Publication of JP4469714B2 publication Critical patent/JP4469714B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Lining And Supports For Tunnels (AREA)

Description

本発明は連結具とそれを用いたコンクリート部材の連結装置に関する。 The present invention relates to a connecting tool and a connecting device for a concrete member using the same .

従来、部材相互の連結具として図13に示すように、内部にテーパ穴101を形成するとともに、そのテーパ穴101の内面に軸方向に沿った摺動案内突条102を周方向に分割して複数形成したケーシング103と、外面を前記テーパ穴101に沿うテーパ面に形成するとともに内面に雌ねじ104を形成した楔ナット105と、この楔ナット105を押圧する圧縮バネ106とで構成されたナット107と、該ナット107に連結するボルト108とからなる連結具が知られている。そして、該連結具における連結に際しては、そのナット107を回転することなく該ナット107に前記ボルト108を挿通することにより、分割された楔ナット105の雌ねじ104がボルト108の雄ねじ109に係合してその楔ナット105が圧縮バネ106に抗して大径側へ押され、複数個の楔ナット105で形成される雌ねじ孔の内径が拡径してナット107をボルト108の所定位置まで挿通でき、その挿通が終ると、圧縮バネ106の付勢力によって楔ナット105の雌ねじ104がボルト108の雄ねじ109に噛合し、ナット107とボルト108の連結が行われるようになっている。   Conventionally, as shown in FIG. 13 as a connecting member between members, a tapered hole 101 is formed inside, and a sliding guide protrusion 102 along the axial direction is divided into the inner surface of the tapered hole 101 in the circumferential direction. A plurality of casings 103, a nut 107 having an outer surface formed into a tapered surface along the tapered hole 101 and a female nut 104 formed on the inner surface, and a compression spring 106 that presses the wedge nut 105. In addition, a connecting tool including a bolt 108 connected to the nut 107 is known. When the connecting tool is connected, the bolt 108 is inserted into the nut 107 without rotating the nut 107 so that the female screw 104 of the divided wedge nut 105 is engaged with the male screw 109 of the bolt 108. The wedge nut 105 is pushed to the large diameter side against the compression spring 106, the inner diameter of the female screw hole formed by the plurality of wedge nuts 105 is increased, and the nut 107 can be inserted into a predetermined position of the bolt 108. When the insertion is finished, the female screw 104 of the wedge nut 105 is engaged with the male screw 109 of the bolt 108 by the urging force of the compression spring 106, and the nut 107 and the bolt 108 are connected.

このような楔ナット105の雌ねじ104とボルト108の雄ねじ109の軸方向の断面は、図14に示すように、軸方向X−Xのねじ山の両面121と122を軸方向X−Xに対して同角度で反対側に傾斜した面に形成して二等辺三角形状に形成されている。また、この雌ねじ104と雄ねじ109は、JISで規定されている並目ねじか或いは細目ねじで形成されている。   As shown in FIG. 14, the axial cross section of the female thread 104 of the wedge nut 105 and the male thread 109 of the bolt 108 is such that the screw threads 121 and 122 in the axial direction XX are made to face the axial direction XX. Are formed on a surface inclined at the same angle to the opposite side and formed in an isosceles triangle shape. The female screw 104 and the male screw 109 are formed of coarse screws or fine screws defined by JIS.

ところで、前記のように構成された連結具を用いて、例えばコンクリート製のシールドセグメント相互を連結する要望がある。この場合、図15に示すように、前記連結具のナット107を一方のシールドセグメント110に設け、ボルト108を他方のシールドセグメント111に設ける。そして、連結に際してはナット107をボルト108に挿通した状態で一方のシールドセグメント110を他方のシールドセグメント111に当接するまで移動して連結するが、ナット107における楔ナット105の雌ねじ104が、ボルト108における雄ねじ109の最終的に噛合すべきねじ山を乗り越えることができず、一方のシールドセグメント110の接合端面112と他方のシールドセグメント111の接合端面113との間に隙間D1が発生する。この隙間D1は可能な限り小さいことが要求される。また、雌ねじ104と雄ねじ109の軸方向の面が共に傾斜しているため、雄ねじ109の先端部のねじ山が雌ねじ104のねじ山をわずかに乗り越えた場合には係止力が小さく、1山もどってしまうおそれがある。   By the way, there is a demand to connect shield segments made of concrete, for example, using the connector configured as described above. In this case, as shown in FIG. 15, the nut 107 of the connector is provided on one shield segment 110 and the bolt 108 is provided on the other shield segment 111. When the nut 107 is inserted into the bolt 108, the one shield segment 110 is moved and connected until it abuts against the other shield segment 111. The female screw 104 of the wedge nut 105 in the nut 107 is connected to the bolt 108. In this case, a thread D1 that can be finally engaged with the male screw 109 cannot be overcome, and a gap D1 is generated between the joint end surface 112 of one shield segment 110 and the joint end surface 113 of the other shield segment 111. This gap D1 is required to be as small as possible. Further, since the axial surfaces of the female screw 104 and the male screw 109 are both inclined, the locking force is small when the screw thread at the tip of the male screw 109 slightly exceeds the screw thread of the female screw 104. There is a risk of returning.

また、前記従来のように、楔ナット105とボルト108のねじがJISで規定されている並目ねじか或いは細目ねじで形成されているものにおいては、比較的大きな隙間を生じる。   Further, as in the prior art, when the threads of the wedge nut 105 and the bolt 108 are formed by coarse threads or fine threads defined by JIS, a relatively large gap is generated.

例えば、呼び径M24の場合において、JISに規定するメートル並目ねじの場合にはねじピッチが3mmであるため、隙間D1が約1.5〜6mmとなり、メートル細目ねじの場合にはねじピッチが2mm又は1.5mm又は1mmであるため、隙間D1が1〜4mm又は0.75〜3mm又は0.5〜2mmとなる。   For example, in the case of the nominal diameter M24, the screw pitch is 3 mm in the case of a metric coarse screw specified in JIS, so the gap D1 is about 1.5 to 6 mm, and the screw pitch is in the case of a metric fine screw. Since it is 2 mm, 1.5 mm, or 1 mm, the gap D1 is 1 to 4 mm, 0.75 to 3 mm, or 0.5 to 2 mm.

また、呼び径M30の場合において、JISに規定するメートル並目ねじの場合にはねじピッチが3.5mmであるため、隙間D1が約1.75mm〜7mmとなり、メートル細目ねじの場合にはねじピッチが3mm又は2mm又は1.5mm又は1mmであるため隙間D1はそれぞれの半分〜2倍の寸法となる。   In the case of the nominal diameter M30, the thread pitch is 3.5 mm in the case of the metric coarse thread specified in JIS, so the gap D1 is about 1.75 mm to 7 mm. Since the pitch is 3 mm, 2 mm, 1.5 mm, or 1 mm, the gap D1 is half or twice as large as each other.

前記のように隙間D1が大きくなると、シールドセグメント110,111の接合間での水もれが発生しやすくなる問題がある。   As described above, when the gap D1 is increased, there is a problem that water leaks easily between the shield segments 110 and 111.

そこで本発明は、連結される部材間の隙間をできる限り小さくし、かつ、連結強度も高くする連結具とそれを用いたコンクリート部材の連結装置を提供することを目的とするものである。 Therefore, an object of the present invention is to provide a connector that reduces the gap between the members to be connected as much as possible and also increases the connection strength, and a connecting device for a concrete member using the same .

前記課題を解決するために、請求項1記載の発明は、ケーシング内に先方が開口する収納室を設け、該収納室に、先方が縮径するテーパ面を有するテーパ穴を形成し、該テーパ穴内に、周方向に複数に分割された楔状の雌型係止部材を軸方向に摺動可能に配置するとともに該雌型係止部材の内面に雌ねじを刻設し、該雌型係止部材を付勢手段で先方へ付勢した雌型連結部材と、外周に雄ねじを形成した雄型係止部材を先部に突設した雄型連結部材とからなり、前記雄型係止部材を前記雌型連結部材に開口した挿入口から挿入することにより、前記各雌型係止部材が拡径し、雄型係止部材の挿入停止により雌型係止部材の雌ねじが雄型係止部材の雄ねじに噛合するようにした連結具であって、
前記雄ねじを、のこぎり刃状で、螺旋状に形成し、前記各雌ねじを、のこぎり刃状で、螺旋の一部で形成し、
前記各雌型係止部材が、最も挿入口側に位置した状態において、前記一の雌型係止部材の雌ねじの螺旋と、他の雌型係止部材の雌ねじの螺旋とが一致しないようにした
ことを特徴とする連結具である。
In order to solve the above-mentioned problem, the invention according to claim 1 is provided with a storage chamber having a front opening in a casing, and a tapered hole having a tapered surface whose diameter is reduced at the front is formed in the storage chamber. A wedge-shaped female locking member divided into a plurality in the circumferential direction is disposed in the hole so as to be slidable in the axial direction, and a female screw is formed on the inner surface of the female locking member. And a male coupling member having a male locking member with a male screw formed on the outer periphery thereof protruding from the front, and the male locking member is Each female locking member is expanded in diameter by being inserted through the insertion opening opened in the female coupling member, and the female screw of the female locking member is inserted into the male locking member by stopping the insertion of the male locking member. A connector adapted to mesh with a male screw,
The male screw is formed in a spiral shape with a saw blade, each female screw is formed in a saw blade shape and a part of a spiral,
In a state where each female locking member is located closest to the insertion port, the spiral of the female screw of the one female locking member does not coincide with the spiral of the female screw of the other female locking member. did
It is the coupling tool characterized by this.

請求項記載の発明は、請求項記載の発明において、前記雌型係止部材の雌ねじの軸方向断面形状は、前記雄型係止部を挿入する挿入口側から奥部側に向って縮径する雌側傾斜面と、雌型係止部材の軸方向と直交して、該雌側傾斜面の内径端から外側に向って垂直に形成した雌側垂直面とで構成されるのこぎり刃状に形成され、
前記雄型係止部材の雄ねじの軸方向断面形状は、先端側から後側に向って拡径する雄側傾斜面と、雄型係止部材の軸方向と直交して、該雄側傾斜面の外径端から内側に向って垂直に形成した雄側垂直面とで構成されるのこぎり刃状に形成されていることを特徴とするものである。
According to a second aspect of the present invention, in the first aspect of the present invention, the axial cross-sectional shape of the female thread of the female locking member is from the insertion port side into which the male locking portion is inserted toward the back side. A saw blade comprising a female-side inclined surface that is reduced in diameter and a female-side vertical surface that is formed perpendicularly to the axial direction of the female locking member and perpendicularly outward from the inner diameter end of the female-side inclined surface. Formed into a shape,
The male cross-sectional shape of the male locking member in the axial direction is a male inclined surface that expands from the front end to the rear, and the male inclined surface is orthogonal to the axial direction of the male locking member. It is formed in the shape of a saw blade which is composed of a male-side vertical surface which is formed vertically from the outer diameter end to the inner side.

請求項記載の発明は、請求項1又は記載の発明において、前記雌ねじと、前記雄ねじにおける呼び径に対するねじピッチを、JISに規定する細目ねじの呼び径に対するねじピッチよりも小さく設定したものである。 The invention according to claim 3 is the invention according to claim 1 or 2 , wherein the screw pitch with respect to the nominal diameter of the female screw and the male screw is set smaller than the screw pitch with respect to the nominal diameter of the fine screw specified in JIS. It is.

請求項記載の発明は、請求項1乃至のいずれかに記載の発明において、前記雌型連結部材における前記雌型係止部材を2個対向して設けたことを特徴とするものである。 According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the two female locking members of the female coupling member are provided to face each other. .

請求項記載の発明は、請求項記載の発明において、前記雌型連結部材における前記雌型係止部材の厚みを、前記雄型係止部材の外径よりも小さくしたことを特徴とするものである。 According to a fifth aspect of the present invention, in the fourth aspect of the invention, the thickness of the female locking member in the female connecting member is smaller than the outer diameter of the male locking member. Is.

請求項6記載の発明は、ケーシング内に先方が開口する収納室を設け、該収納室に、先方が縮径するテーパ面を有するテーパ穴を形成し、該テーパ穴内に、周方向に複数に分割された楔状の雌型係止部材を軸方向に摺動可能に配置するとともに該雌型係止部材の内面に雌ねじを刻設し、該雌型係止部材を付勢手段で先方へ付勢した雌型連結部材と、外周に雄ねじを形成した雄型係止部材を先部に突設した雄型連結部材とからなり、前記雄型係止部材を前記雌型連結部材に開口した挿入口から挿入することにより、前記各雌型係止部材が拡径し、雄型係止部材の挿入停止により雌型係止部材の雌ねじが雄型係止部材の雄ねじに噛合するようにした連結具を使用したコンクリート部材の連結装置であって、
前記雄ねじを、のこぎり刃状で、螺旋状に形成し、前記各雌ねじを、のこぎり刃状で、螺旋の一部で形成し、
前記各雌型係止部材が、最も挿入口側に位置した状態において、前記一の雌型係止部材の雌ねじの螺旋と、他の雌型係止部材の雌ねじの螺旋とが一致しないようにし、
前記雌型連結部材を、連結すべき一方のコンクリート部材に固設し、前記雄型連結部材を、連結すべき他方のコンクリート部材に固設したことを特徴とするコンクリート部材の連結装置である
請求項7記載の発明は、請求項6記載の発明において、前記コンクリート部材が、シールドセグメントであることを特徴とするものである。
According to a sixth aspect of the present invention, a storage chamber having a front opening is provided in the casing, a tapered hole having a tapered surface with a diameter reduced at the front is formed in the storage chamber, and a plurality of circumferential holes are formed in the taper hole. The divided wedge-shaped female locking member is disposed so as to be slidable in the axial direction, and a female screw is formed on the inner surface of the female locking member, and the female locking member is attached to the front side by a biasing means. An insertion in which the male locking member is opened and the male locking member having a male locking member formed on the outer periphery with a male locking member projecting from the tip of the male locking member. Each of the female locking members is expanded in diameter by being inserted from the mouth, and the female screw of the female locking member is engaged with the male screw of the male locking member by stopping the insertion of the male locking member. A connecting device for concrete members using tools,
The male screw is formed in a spiral shape with a saw blade, each female screw is formed in a saw blade shape and a part of a spiral,
In a state in which each female locking member is located closest to the insertion port, the spiral of the female screw of the one female locking member and the spiral of the female screw of the other female locking member do not coincide with each other. ,
The female-type connecting member is fixed to one concrete member to be connected, and the male-type connecting member is fixed to the other concrete member to be connected .
The invention according to claim 7 is the invention according to claim 6, wherein the concrete member is a shield segment.

本発明によれば、雄ねじと雌ねじを、のこぎり刃状に形成したので、従来のような軸方向の断面における両面が傾斜するねじに比べて、雄ねじと雌ねじが相互に嵌合する際の両者の噛合が早く、かつ、大きく噛み合い、かつ、連結される部材間の隙間を小さくすることができる。   According to the present invention, since the male screw and the female screw are formed in the shape of a saw blade, both the male screw and the female screw are fitted to each other as compared with a conventional screw having both sides inclined in the axial cross section. Engagement is quick and large, and the gap between the connected members can be reduced.

更に、雌型係止部材を分割して周方向に配置するようにしたので、多数製造された雌型係止部材の中からランダムに雌型係止部材を取り出して使用することにより、その使用した複数個の雌型係止部材のねじ山は、1つの螺旋上に位置することなく、1つの螺旋上から相互に軸方向にずれる確率が極めて高く、このねじ山のずれにより、噛合が早く、かつ、噛合量を多くすることができる。   Furthermore, since the female locking member is divided and arranged in the circumferential direction, the female locking member is randomly taken out from the manufactured female locking members and used. The screw threads of the plurality of female locking members are not located on one spiral, and there is an extremely high probability that they are shifted from each other in the axial direction. And the amount of meshing can be increased.

更に、雄ねじと雌ねじとの噛合状態でのガタつき量も少なくなる。
したがって、のこぎり刃形状と螺旋形状とが相まって、早く、かつ、強固な連結が可能となる。
Furthermore, the amount of play in the meshed state of the male screw and the female screw is reduced.
Therefore, the saw blade shape and the spiral shape are combined to enable fast and strong connection.

請求項の発明によれば、更に、雌型係止部材を2個対向して設けたのみなので、雌型連結部材を薄く形成することができる。 According to the invention of claim 4 , since only two female locking members are provided to face each other, the female connecting member can be formed thin.

請求項の発明によれば、更に、雌型係止部材を雄型係止部材の外径よりも薄く設定することで、雌型連結部材をより薄く形成することができる。 According to the invention of claim 5 , the female coupling member can be formed thinner by setting the female locking member to be thinner than the outer diameter of the male locking member.

本発明の好ましい実施の形態を図1乃至図12に示す実施例に基づいて説明する。   A preferred embodiment of the present invention will be described based on the examples shown in FIGS.

図1乃至図8は実施例1を示す。
雌型連結部材1を構成するケーシング2は、筒状、例えば円筒状に形成され、その内部に収納室3が形成されている。該収納室3の先部には、その内周面を先端側から後方(奥部)にかけて内径が徐々に拡大するテーパ面にしてなるテーパ穴4が形成され、収納室3の中間部は付勢手段収納部5に形成され、収納室3の後部内周には雌ねじ6が刻設されている。前記のテーパ穴4より先部には挿入口7が開口形成されている。
1 to 8 show a first embodiment.
A casing 2 constituting the female connecting member 1 is formed in a cylindrical shape, for example, a cylindrical shape, and a storage chamber 3 is formed therein. A tapered hole 4 having a tapered surface whose inner diameter gradually increases from the front end side to the rear (back part) is formed in the front part of the storage chamber 3, and an intermediate part of the storage chamber 3 is attached. A female screw 6 is formed on the inner periphery of the rear portion of the storage chamber 3. An insertion port 7 is formed in an opening ahead of the tapered hole 4.

前記テーパ穴4の内面には、ケーシング2の軸方向に沿った摺動案内突条8が、図2に示すように周方向に分割して複数、実施例においては3個形成されている。なお、この摺動案内突条8は無くてもよい。   On the inner surface of the tapered hole 4, a plurality of sliding guide ridges 8 along the axial direction of the casing 2 are formed in the circumferential direction as shown in FIG. The sliding guide protrusion 8 may be omitted.

また、前記テーパ穴4内には、図2に示すように、周方向に複数、例えば3分割してなる楔状の雌型係止部材9A,9B,9Cが、前記摺動案内突条8相互間においてケーシング2の軸方向に摺動可能に配設されている。更に、該楔状の雌型係止部材9A〜9Cの外面は前記テーパ穴4のテーパ面に沿った、すなわち、先端側から後方にかけて外径が徐々に拡大するテーパ面10が形成されている。更に、各雌型係止部材9A〜9Cの内周面には、のこぎり刃状の雌ねじ11が刻設されている。また、該雌ねじ11は、ケーシング2の軸心に沿って形成されている。なお、本実施例において、雌型係止部材9A〜9Cを以下楔ナット9A〜9Cという。また、3個の楔ナット9A〜9Cを代表して楔ナット9ともいう。   Further, as shown in FIG. 2, wedge-shaped female locking members 9A, 9B, 9C formed in a plurality of, for example, three parts in the circumferential direction are inserted into the taper holes 4 with respect to the sliding guide ridges 8. It is arranged so as to be slidable in the axial direction of the casing 2. Furthermore, the outer surface of the wedge-shaped female locking members 9A to 9C is formed with a tapered surface 10 along the tapered surface of the tapered hole 4, that is, the outer diameter gradually increases from the tip side to the rear side. Further, a saw blade-shaped female screw 11 is engraved on the inner peripheral surfaces of the female locking members 9A to 9C. The female screw 11 is formed along the axis of the casing 2. In this embodiment, the female locking members 9A to 9C are hereinafter referred to as wedge nuts 9A to 9C. The three wedge nuts 9A to 9C are also referred to as wedge nuts 9 as representatives.

以上により、複数個の楔ナット9によって図2に示すように雌ねじ穴9Eが形成され、各楔ナット9がテーパ面に沿って後退することにより、その雌ねじ穴9Eが拡径され、先方へ移動することにより、その雌ねじ穴9Eが縮径するようになっている。   As described above, the female screw holes 9E are formed by the plurality of wedge nuts 9 as shown in FIG. 2, and each female nut 9 retreats along the tapered surface, so that the female screw holes 9E are expanded in diameter and moved forward. By doing so, the female screw hole 9E is reduced in diameter.

前記楔ナット9の後端には、各楔ナット9に共通して係合する付勢手段受け12が配置されている。   At the rear end of the wedge nut 9, an urging means receiver 12 that is engaged with each wedge nut 9 is arranged.

前記ケーシング2の後部の雌ねじ6には、中心部にねじ穴13を設けた蓋板14が螺着されている。前記付勢手段収納部5内には付勢手段であるバネ15が、前記付勢手段受け12と蓋板14間に圧縮した状態で介在され、該バネ15の付勢力により各楔ナット9を常時先方へ付勢している。なお、付勢手段15は、コイルバネ、ゴム、樹脂、ウレタンなどの弾性部材で形成される。   A cover plate 14 having a screw hole 13 in the center is screwed to the female screw 6 at the rear of the casing 2. A spring 15 as a biasing means is interposed in the biasing means housing 5 in a compressed state between the biasing means receiver 12 and the cover plate 14, and each wedge nut 9 is moved by the biasing force of the spring 15. Always energized to the other side. The biasing means 15 is formed of an elastic member such as a coil spring, rubber, resin, or urethane.

前記蓋板14にはアンカーバー16が螺着して固設されている。
前記の雌型連結部材1とアンカーバー16は、一方の連結部材、例えば図4に示すような一方のコンクリート部材であるシールドセグメント17に、ケーシング2の前端面がシールドセグメント17の接合面17aと面一になるように埋設して固設される。
An anchor bar 16 is screwed and fixed to the lid plate 14.
The female connecting member 1 and the anchor bar 16 are connected to the shield segment 17 which is one connecting member, for example, one concrete member as shown in FIG. 4, and the front end surface of the casing 2 is connected to the joint surface 17 a of the shield segment 17. It is buried and fixed so as to be flush with each other.

20は雄型連結部材で、円筒状のケーシング21内に、内周に雌ねじ22を刻設した連結体23を固設し、該連結体23の先部に雄型係止部材を形成する雄ねじ体24の基部を螺着して構成されている。該雄ねじ体24は、ケーシング21及び連結体23の先端面よりも先部へ突出している。また、該雄ねじ体24の外周に形成した雄ねじ25の直径は、前記各楔ナット9が最前進した場合におけるこれらで形成される雌ねじ穴9Eの直径よりも若干大径に設定されている。   Reference numeral 20 denotes a male connecting member. A connecting body 23 having a female screw 22 engraved on the inner periphery thereof is fixed in a cylindrical casing 21, and a male locking member is formed at the tip of the connecting body 23. The base portion of the body 24 is screwed. The male screw body 24 protrudes beyond the front end surfaces of the casing 21 and the connecting body 23. The diameter of the male screw 25 formed on the outer periphery of the male screw body 24 is set to be slightly larger than the diameter of the female screw hole 9E formed by the wedge nuts 9 when the wedge nuts 9 are most advanced.

前記連結体23の後部にはアンカーバー26が螺着して固設されている。
前記の雄型連結部材20とアンカーバー26は、他方の連結部材、例えば図4に示すような他方のコンクリート部材であるシールドセグメント27に、ケーシング21と連結体23の前端面がシールドセグメント27の接合面27aと面一になるように埋設して固設される。
An anchor bar 26 is screwed and fixed to the rear portion of the connecting body 23.
The male connecting member 20 and the anchor bar 26 are connected to a shield segment 27 which is the other connecting member, for example, the other concrete member as shown in FIG. It is buried and fixed so as to be flush with the joint surface 27a.

前記一方のシールドセグメント17における接合面17aにはシール材28が突出して設けられ、他方のシールドセグメント27における接合面27aにはシール材29が突出して設けられている。   A sealing material 28 projects from the joint surface 17 a of the one shield segment 17, and a sealing material 29 projects from the joint surface 27 a of the other shield segment 27.

次に、前記本発明の実施例1における楔ナット9の雌ねじ11と、雄ねじ体24の雄ねじ25について説明する。   Next, the female screw 11 of the wedge nut 9 and the male screw 25 of the male screw body 24 in the first embodiment of the present invention will be described.

前記雄ねじ体24の雄ねじ25は、図5乃至図8に示すように、その雄ねじ体24の軸方向X‐Xの断面を、のこぎり刃状にして形成されている。   As shown in FIGS. 5 to 8, the male screw 25 of the male screw body 24 is formed so that the cross section in the axial direction XX of the male screw body 24 has a saw blade shape.

より詳しくは、ねじ山25aの軸方向X‐Xの断面は、雄ねじ体24の挿入側である先端側Aから後側Bに向って拡径する傾斜面25bと、該傾斜面25bの外径端(頂部)25cから内側に向って前記軸方向X‐Xと直交して垂直に形成した垂直面25dとによって、のこぎり刃状に形成されている。   More specifically, the cross section of the screw thread 25a in the axial direction XX includes an inclined surface 25b whose diameter increases from the front end side A which is the insertion side of the male screw body 24 toward the rear side B, and the outer diameter of the inclined surface 25b. It is formed in a saw-tooth shape by a vertical surface 25d formed perpendicularly to the axial direction XX inward from the end (top) 25c.

更に、前記ねじ山25aと、これにより形成される谷部は、雄ねじ体24の軸心X−Xを中心とする螺旋状に形成され、そのねじピッチPは後述するように設定されている。   Further, the screw thread 25a and the valley formed thereby are formed in a spiral shape centering on the axis XX of the male screw body 24, and the screw pitch P is set as described later.

次に、楔ナット9の雌ねじ11について説明する。
前記楔ナット9の雌ねじ11は図5乃至図8に示すように、前記ケーシング2の軸方向、すなわち、楔ナット9が進退する方向(雌ねじ穴5Eの軸方向)X−Xにおける断面を、のこぎり刃状にして形成されている。
Next, the female thread 11 of the wedge nut 9 will be described.
As shown in FIGS. 5 to 8, the female screw 11 of the wedge nut 9 has a cross section in the axial direction of the casing 2, that is, the direction in which the wedge nut 9 advances and retreats (the axial direction of the female screw hole 5E) XX. It is formed in a blade shape.

より詳しくは、ねじ山9aのX−X方向の断面は、雄ねじ25を挿入する挿入口側Cから奥部D側に向って縮径する傾斜面9bと、該傾斜面9bの内径端(頂部)9cから、前記軸方向X‐Xと直交して外側に向って垂直に形成した垂直面9dとによって、のこぎり刃状に形成されている。   More specifically, the cross section of the screw thread 9a in the XX direction includes an inclined surface 9b whose diameter decreases from the insertion port side C into which the male screw 25 is inserted toward the back D side, and an inner diameter end (top portion) of the inclined surface 9b. ) From 9c to a vertical surface 9d formed perpendicularly to the outside in the direction perpendicular to the axial direction XX.

そして、この各楔ナット9で形成された雌ねじ穴9Eに前記雄ねじ体24が挿入された場合に、各楔ナット9のねじ山9aが、挿入された雄ねじ体24の隣接するねじ山25a間(谷部)に嵌合するように、各楔ナット9のねじ山9aと谷は、前記雄ねじ体24のねじ山25aと谷の螺旋と同一の螺旋上に配置されるように形成されている。   When the male screw body 24 is inserted into the female screw hole 9E formed by each wedge nut 9, the thread 9a of each wedge nut 9 is located between the adjacent screw threads 25a of the inserted male screw body 24 ( The thread 9a and the valley of each wedge nut 9 are formed so as to be arranged on the same spiral as the thread 25a and the valley of the male screw body 24 so as to be fitted to the valley).

また、前記楔ナット9は、次のように製造される。
前記のようにX‐X方向の断面の肉厚が楔状に形成され、その内周に前記のような、のこぎり刃状で、かつ螺旋状の雌ねじ11を刻設した1個の円筒体(周方向に連続した一体状の筒)を、周方向の等間隔、例えば3等分間隔の位置で、軸方向に切断して、前記の楔ナット9を複数、例えば3個製造する。これにより、3個の楔ナットの雌ねじ11は、螺旋の一部で形成される。このように製造された3個の楔ナットは、そのねじ山が1つの螺旋上に位置する。
The wedge nut 9 is manufactured as follows.
As described above, the thickness of the cross-section in the XX direction is formed in a wedge shape, and a single cylindrical body (circumferential) having a saw blade-like and spiral female screw 11 as described above is formed on the inner periphery thereof. A plurality of, for example, three wedge nuts 9 described above are manufactured by cutting an axially continuous cylinder) in the axial direction at equal intervals in the circumferential direction, for example, at three equal intervals. Thereby, the internal thread 11 of three wedge nuts is formed by a part of spiral. The three wedge nuts manufactured in this way have their threads located on one spiral.

そして、このように製造されて貯蔵された多数の楔ナット9の中から、選択することなくランダムに必要な数、例えば実施例では3個の楔ナット9A〜9Cを取り出し、前記のようにケーシング2内へ挿入する。   Then, a necessary number (for example, three wedge nuts 9A to 9C in the embodiment) is taken out randomly from a number of wedge nuts 9 manufactured and stored in this manner, and the casing as described above. Insert into 2.

ここで、前記のように、螺旋状の雌ねじ11を刻設した1個の円筒体を3分割し、この3分割されたその楔ナット9自体をそのままケーシング2内へ挿入すると、図5において第2の楔ナット9Bのねじ山9aは、第1の楔ナット9Aのねじ山9aにおける頂点の螺旋の延長線上、すなわち、図5の鎖線で示す延長線上の点Fに形成される。   Here, as described above, one cylindrical body engraved with the helical female screw 11 is divided into three parts, and the wedge nut 9 itself divided into three parts is inserted into the casing 2 as it is. The thread 9a of the second wedge nut 9B is formed at a point F on the extension line of the spiral at the apex of the thread 9a of the first wedge nut 9A, that is, on the extension line indicated by the chain line in FIG.

しかし、前記のように、楔ナット9A〜9Cを、多数貯蔵された中から、ランダムに取出して使用することにより、図5に示すように、第2の楔ナット9Bとして、そのねじ山9aの頂点が前記F点より軸方向X‐Xにずれたねじ山9aを有する楔ナット9Bが使用される確率が極めて高い。また、第3の楔ナット9Cも、そのねじ山9aが、第1及び第2の楔ナット9A,9Bのねじ山に対して前記のようにずれる確率が極めて高い。   However, as described above, the wedge nuts 9A to 9C are taken out from a large number of stored nuts at random, and used as a second wedge nut 9B as shown in FIG. There is a very high probability that a wedge nut 9B having a thread 9a whose apex is displaced in the axial direction XX from the point F will be used. In addition, the third wedge nut 9C also has a very high probability that the thread 9a is displaced as described above with respect to the threads of the first and second wedge nuts 9A and 9B.

次に前記楔ナット9の雌ねじ11と、前記雄ねじ体24の雄ねじ25のねじピッチPについて説明する。   Next, the thread pitch P of the internal thread 11 of the wedge nut 9 and the external thread 25 of the external thread body 24 will be described.

前記楔ナット9の雌ねじ11と、前記雄ねじ体24の雄ねじ25のねじピッチP(図5及び図8参照)は所望に形成するもので、JISに規定する細目ねじの呼び径に対するねじピッチとしてもよく、また、JISに規定する細目ねじの呼び径に対するねじピッチよりも小さくしてもよい。   The thread pitch P (see FIGS. 5 and 8) of the female thread 11 of the wedge nut 9 and the male thread 25 of the male thread body 24 is formed as desired, and may be a thread pitch with respect to the nominal diameter of the fine thread defined in JIS. It may be smaller than the thread pitch with respect to the nominal diameter of the fine thread defined in JIS.

例として、呼び径がM24(mm)の場合には、前記JIS B 0207のメートル細目ねじではねじピッチPを2mm又は1.5mm又は1mmに形成するが、本発明では、ねじピッチPを0.3mm〜0.8mm、望ましくは0.5mmに設定する。   For example, when the nominal diameter is M24 (mm), the thread pitch P is 2 mm, 1.5 mm, or 1 mm in the metric fine thread of JIS B 0207. It is set to 3 mm to 0.8 mm, preferably 0.5 mm.

また、呼び径がM30(mm)の場合もねじピッチPを0.3mm〜0.8mm、望ましくは0.5mmに設定する。   Further, when the nominal diameter is M30 (mm), the screw pitch P is set to 0.3 mm to 0.8 mm, preferably 0.5 mm.

次に、本発明をシールドセグメントに適用した例に基づいて連結操作を説明する。
先ず、図4に示すように、雌型連結部材1の挿入口7と雄型連結部材20の雄ねじ体24を略同軸上に対向配置した状態で、一方のシールドセグメント17と他方のシールドセグメント27を相対的に接近させる。
Next, a connection operation will be described based on an example in which the present invention is applied to a shield segment.
First, as shown in FIG. 4, one shield segment 17 and the other shield segment 27 are arranged in a state where the insertion port 7 of the female connecting member 1 and the male screw body 24 of the male connecting member 20 are disposed substantially coaxially. Make them relatively close.

これにより、雄ねじ体24が、雌型連結部材1における挿入口7から進入し、その後、雄ねじ体24が各楔ナット9A〜9Cをバネ15の付勢力に抗して後退させて各楔ナット9A〜9Cで形成されるねじ穴9Eを拡径し、各楔ナット9A〜9Cのねじ山を乗り越えつつ挿入する。   As a result, the male screw body 24 enters from the insertion port 7 in the female connecting member 1, and then the male screw body 24 retracts each wedge nut 9 </ b> A to 9 </ b> C against the urging force of the spring 15, and each wedge nut 9 </ b> A. The diameter of the screw hole 9 </ b> E formed by ˜9C is expanded, and the screw holes 9 </ b> A to 9 </ b> C are inserted over the screw threads.

雌型連結部材1におけるケーシング2の先端面、すなわち、一方のシールドセグメント17の接合面17aと、雄型連結部材20におけるケーシング21の先端面、すなわち他方のシールドセグメント27の接合面27aが近接して雄ねじ体24の挿入が停止されると、各楔ナット9はバネ15の付勢力によって先方へ押し戻されるとともにテーパ面4,10によって各楔ナット9で形成される雌ねじ穴9Eの径が縮径し、各楔ナット9の雌ねじ11が雄ねじ体24の雄ねじ25に噛合する。これによって、図3に示すように、雌型連結部材1と雄型連結部材20が連結され、両シールドセグメント17,27は相互に連結される。   The front end surface of the casing 2 in the female connecting member 1, that is, the joining surface 17 a of one shield segment 17, and the front end surface of the casing 21 in the male connecting member 20, that is, the joining surface 27 a of the other shield segment 27 are close to each other. When the insertion of the male screw body 24 is stopped, each wedge nut 9 is pushed back by the urging force of the spring 15 and the diameter of the female screw hole 9E formed by each wedge nut 9 by the tapered surfaces 4 and 10 is reduced. Then, the female screw 11 of each wedge nut 9 meshes with the male screw 25 of the male screw body 24. Thereby, as shown in FIG. 3, the female connection member 1 and the male connection member 20 are connected, and the shield segments 17 and 27 are connected to each other.

この連結状態において、楔ナット9の雌ねじ11と雄ねじ体24の雄ねじ25は前記のような、のこぎり刃状に形成されているため、次のような作用、効果を発揮する。   In this connected state, the female screw 11 of the wedge nut 9 and the male screw 25 of the male screw body 24 are formed in the shape of a saw blade as described above, and thus exhibit the following operations and effects.

前記図14に示すような、ねじ山の両面121と122が軸方向に対して傾斜したものにおいては、連結時において、ボルト108のねじ山が楔ナット105のねじ山をわずかに乗り越えた状態では、ねじ山の相互の噛み込みが少なくなる。   As shown in FIG. 14, in the case where both sides 121 and 122 of the thread are inclined with respect to the axial direction, the thread of the bolt 108 slightly exceeds the thread of the wedge nut 105 at the time of connection. , The mutual biting of the screw thread is reduced.

これに対し、本発明のように、雌ねじ11と雄ねじ25をのこぎり刃状に形成すると、雄ねじ25のねじ山25aが雌ねじ11のねじ山9aを乗り越えると、雄ねじ25の垂直面25dと雌ねじ11の垂直面9dが速やかに、かつ、大きく噛み合い、かつ、シールドセグメント間の隙間を小さくすることができる。   On the other hand, when the female screw 11 and the male screw 25 are formed in a saw blade shape as in the present invention, when the screw thread 25a of the male screw 25 gets over the screw thread 9a of the female screw 11, the vertical surface 25d of the male screw 25 and the female screw 11 The vertical surface 9d can mesh quickly and greatly, and the gap between the shield segments can be reduced.

更に、前記のような、のこぎり刃状の雌ねじ11と、のこぎり刃状の雄ねじ25を螺旋状に形成した効果について説明する。   Furthermore, the effect of forming the sawtooth female screw 11 and the sawtooth male screw 25 in a spiral manner as described above will be described.

例えば、仮に、図16及び図17に示すように、雄ねじ200のねじ山201,202をのこぎり刃状で、かつ、軸心X−Xに対して直交する方向に形成し、更に、これら複数のねじ山201,202を平行に形成し、また、雌ねじ203のねじ山204,205をのこぎり刃状で、かつ、前記雄ねじ200のねじ山201,202と同様に平行に形成した場合には、図17に示すように、雄ねじ200の先端のねじ山201が雌ねじ203における隣接するねじ山204,205間に位置した場合、その先端のねじ山201は、奥部のねじ山205には係止せず入口側のねじ山204に係止することになる。   For example, as shown in FIGS. 16 and 17, the threads 201 and 202 of the male screw 200 are formed in a saw blade shape and in a direction orthogonal to the axis XX, When the threads 201 and 202 are formed in parallel, and the threads 204 and 205 of the female thread 203 are saw-toothed and formed in parallel with the threads 201 and 202 of the male thread 200, 17, when the thread 201 at the tip of the male screw 200 is positioned between the adjacent threads 204 and 205 in the female screw 203, the thread 201 at the tip is not locked to the screw thread 205 at the back. It is locked to the thread 204 on the inlet side.

これに対し、本発明においては、図5及び図6で説明したように、第1〜第3の楔ナット9A〜9Cにおける各ねじ山9aが形成する螺旋が軸方向X‐Xに相対的にずれているため、図6に示すように、雄ねじ25の先端のねじ山25gが第1の楔ナット9Aにおける隣接するねじ山9h,9k間に位置しても、ねじ山25gが第2又は第3の楔ナット9A,9Bにおける前記ねじ山9hより奥部に位置するねじ山9nに係止する。なお、図6の場合は、雄ねじ25のねじ山25gは、第1の楔ナット9Aのねじ山9hに噛合する。   On the other hand, in the present invention, as described with reference to FIGS. 5 and 6, the spiral formed by each thread 9a in the first to third wedge nuts 9A to 9C is relatively in the axial direction XX. As shown in FIG. 6, even if the screw thread 25g at the tip of the male screw 25 is located between the adjacent screw threads 9h and 9k in the first wedge nut 9A, the screw thread 25g is second or second. The third wedge nuts 9A and 9B are engaged with the thread 9n located behind the thread 9h. In the case of FIG. 6, the thread 25g of the male screw 25 meshes with the thread 9h of the first wedge nut 9A.

したがって、本発明においては、雄ねじ25と雌ねじ11との噛合量が、前記図16に示すような、のこぎり刃を平行に形成したものに比べて多く(実施例では楔ナット9の1個分又は2個分多く)なり、連結強度が大きくなる。   Therefore, in the present invention, the amount of engagement between the male screw 25 and the female screw 11 is larger than that in which the saw blades are formed in parallel as shown in FIG. 2) and the connection strength increases.

更に、連結時における噛合が早くなり、更に、連結状態での両ケーシング2,21との隙間D2(図3参照)、すなわち、両シールドセグメント17,27間の隙間も小さくすることができる。   Further, the meshing at the time of connection becomes faster, and the gap D2 (see FIG. 3) between the casings 2 and 21 in the connected state, that is, the gap between the shield segments 17 and 27 can be reduced.

次に、本発明は、前記の雌ねじ11と雄ねじ25のねじピッチPを所望に設定するものであるが、前記のように、通常使用されているJIS規定の細目ねじのピッチよりも小さく形成すると次のような効果を発揮できる。   Next, according to the present invention, the thread pitch P of the female screw 11 and the male screw 25 is set as desired. As described above, when the pitch is formed to be smaller than the pitch of the fine thread defined by JIS which is normally used. The following effects can be demonstrated.

連結時において、各楔ナット9は、最終的に噛合すべき雄ねじ体24のねじ山を乗り越えることができない場合もあり、この場合には、雄ねじ体24には、その軸方向へのガタつきが生じ、両ケーシング2,21の相互間、すなわち、両シールドセグメント17,27の接合面17a,27a相互間に図3に示すように隙間D2が生じる。   At the time of connection, each wedge nut 9 may not be able to get over the thread of the male screw body 24 to be finally engaged, and in this case, the male screw body 24 has a backlash in the axial direction. As a result, a gap D2 is formed between the casings 2 and 21, that is, between the joint surfaces 17a and 27a of the shield segments 17 and 27 as shown in FIG.

しかし、楔ナット9の雌ねじ11と雄ねじ体24の雄ねじ25のねじピッチPが、前記のように、通常使用されているJIS規定の細目ねじのピッチよりも小さく形成されているので、前記のガタつきは極めて小さくなる。   However, since the thread pitch P of the female thread 11 of the wedge nut 9 and the male thread 25 of the male threaded body 24 is formed smaller than the pitch of fine threads stipulated by JIS, which is normally used, as described above, The time is extremely small.

例えば、呼び径がM24(mm)の場合において、ねじピッチPが従来のJIS B 0207の細目ねじのように2mmであると、前記のように隙間D1が1〜4mmになるのに対し、本発明の前記実施例のように呼び径がM24(mm)の場合にねじピッチPを0.5mmに設定すると前記の隙間D2は0.25〜1mmとなる。   For example, when the nominal diameter is M24 (mm) and the thread pitch P is 2 mm as in the conventional fine thread of JIS B 0207, the gap D1 is 1 to 4 mm as described above. When the nominal diameter is M24 (mm) and the screw pitch P is set to 0.5 mm as in the embodiment of the invention, the gap D2 is 0.25 to 1 mm.

このように、隙間が小さくなることは、両シールドセグメント17,27間での水もれを防止を高めることができる。更に、シールドセグメント17,27にシール材28,29を設ける場合においても、このシール材28,29を小さなものにしてコスト低減を図ることができる。   Thus, the reduction in the gap can increase prevention of water leakage between the shield segments 17 and 27. Further, even when the sealing materials 28 and 29 are provided on the shield segments 17 and 27, the sealing materials 28 and 29 can be made small to reduce the cost.

また、ねじピッチPを従来のものよりも小さくすることによって、楔ナット9及び雄ねじ体24の径方向の寸法を従来のものよりも小さくすることができ、これにより、連結具全体を小型化し、シールドセグメントの厚さを薄くすることができ、かつ連結具及びシールドセグメントのコスト低減を図ることができる。   Further, by making the screw pitch P smaller than that of the conventional one, the radial dimension of the wedge nut 9 and the male screw body 24 can be made smaller than that of the conventional one. The thickness of the shield segment can be reduced, and the cost of the connector and the shield segment can be reduced.

また、バネ15の付勢力によって楔ナット9の雌ねじ11が雄ねじ体24の雄ねじ25へ食い込むように作用し、かつ、雄ねじ体24に抜け方向への力が作用すると楔ナット9が食い込むため、ねじピッチPが小さくても強固な連結状態が確保される。   Further, since the female screw 11 of the wedge nut 9 acts to bite into the male screw 25 of the male screw body 24 by the biasing force of the spring 15, and when the force in the pulling direction acts on the male screw body 24, the wedge nut 9 bites in. Even if the pitch P is small, a strong connected state is ensured.

なお、前記実施例のように摺動案内突条8を設けた場合には、雌型連結部材1又は雄型連結部材20のいずれかを回転することにより、これらを分離できるが、このような分離が不要或いは不可にする場合には摺動案内突条8を設けない。   In addition, when the sliding guide protrusion 8 is provided as in the above-described embodiment, these can be separated by rotating either the female connection member 1 or the male connection member 20. When the separation is unnecessary or impossible, the sliding guide protrusion 8 is not provided.

図9乃至図12は実施例2を示す。
雌型連結部材31は、図12に示すように、各平板材を積層して板状に形成されており、その構成する部品である裏カバー32は金属の平板で形成されている。
9 to 12 show a second embodiment.
As shown in FIG. 12, the female connecting member 31 is formed in a plate shape by laminating each flat plate material, and the back cover 32 which is a component constituting the female connecting member 31 is formed of a metal flat plate.

前記裏カバー32の表面には一対の裏スペーサ33、34が、同一平面内において、雄型係止部材35を挿通する軸X−Xを挟んで左右に所定の隙間D3を有して、図12に示すように、平行に配置され、これらの裏スペーサ33、34間の隙間が、収納室36の一部を形成している。   On the surface of the back cover 32, a pair of back spacers 33, 34 has a predetermined gap D3 on the left and right with an axis XX passing through the male locking member 35 in the same plane. As shown in FIG. 12, they are arranged in parallel, and a gap between these back spacers 33 and 34 forms a part of the storage chamber 36.

前記一対の裏スペーサ33、34の表面側には一対のケース板37、38が、前記雄型係止部材35が挿通される軸X−Xを挟んで所定の隙間を有して平行に配置され、これら一対のケース板37、38間の隙間が収納室36の一部を形成している。該一対のケース板37、38の夫々の内側面には、挿入側から奥方に向かうに従い外側へ拡がるテーパ面39、40が形成されている。テーパ面39、40は、テーパ穴36aの一部を形成している。   A pair of case plates 37, 38 are arranged in parallel on the surface side of the pair of back spacers 33, 34 with a predetermined gap across the axis XX through which the male locking member 35 is inserted. A gap between the pair of case plates 37 and 38 forms a part of the storage chamber 36. Tapered surfaces 39 and 40 are formed on the inner side surfaces of the pair of case plates 37 and 38 so as to expand outward from the insertion side toward the back. The tapered surfaces 39 and 40 form a part of the tapered hole 36a.

前記一対のケース板37、38の夫々の内側には楔型の2個の雌型係止部材41、42が図10に示すように、挿入口36b面における一方向において、すなわち、挿入口36bから見て長方形に形成された雌型連結部材31の長手方向に、対向して配置されている。該雌型係止部材41、42は板状に形成され、その内側面には前記雄型係止部材35の挿通方向(軸X−X)に沿って雌ねじ41a、42aが刻設されている。また、該雌型係止部材41、42の外側面は前記テーパ面39、40に沿ったテーパ面41b、42bに形成されている。更に、雌型係止部材41、42の表面側には夫々案内ピン43、44が上方へ突設されている。   As shown in FIG. 10, two wedge-shaped female locking members 41 and 42 are provided inside the pair of case plates 37 and 38 in one direction on the surface of the insertion port 36b, that is, the insertion port 36b. The female connection members 31 that are formed in a rectangular shape as viewed from the side are arranged to face each other in the longitudinal direction. The female locking members 41, 42 are formed in a plate shape, and female screws 41 a, 42 a are engraved on the inner surface along the insertion direction (axis XX) of the male locking member 35. . The outer surfaces of the female locking members 41 and 42 are formed as tapered surfaces 41b and 42b along the tapered surfaces 39 and 40, respectively. Furthermore, guide pins 43 and 44 project upward from the surface side of the female locking members 41 and 42, respectively.

前記一対のケース板37、38の表面には金属の平板からなる一対の表スペーサ45、46が、前記一対の裏スペーサ33、34と同様の隙間を有して平行に配置されている。該一対の表スペーサ45、46には、前記雌型係止部材41、42の案内ピン43、44が摺動可能に嵌合する案内長孔47、48が表裏方向に貫通して形成されている。該案内長孔47、48には前記テーパ面39、40に沿って、すなわち、後方が外側へ拡がるように傾斜して形成されている。また、案内長孔47、48の前側にはストッパ面47a、48aが形成されている。   On the surface of the pair of case plates 37 and 38, a pair of front spacers 45 and 46 made of a metal flat plate are arranged in parallel with the same gap as the pair of back spacers 33 and 34. The pair of front spacers 45, 46 are formed with guide long holes 47, 48 through which the guide pins 43, 44 of the female locking members 41, 42 are slidably fitted in the front and back directions. Yes. The guide elongated holes 47 and 48 are formed so as to be inclined along the tapered surfaces 39 and 40, that is, the rearward side is expanded outward. Stopper surfaces 47a and 48a are formed in front of the guide long holes 47 and 48, respectively.

また、雌型連結部材41、42の雌ねじ41a、42aは、前記実施例1の楔ナット9の雌ねじ11と同様の、のこぎり刃状のねじ山形状を有し、かつ、螺旋状の一部に形成されている。またねじピッチPについても同様に設定する。   The female threads 41a, 42a of the female coupling members 41, 42 have a sawtooth-like thread shape similar to the female thread 11 of the wedge nut 9 of the first embodiment, and are part of the spiral shape. Is formed. The screw pitch P is set in the same manner.

また、前記ケース板37、38には、雌型係止部材41、42の後部に付勢手段収納室49、50が形成されており、該収納室49、50内に前記実施例1と同様の付勢手段51、52が収納されている。前記裏スペーサ33、34と表スペーサ45、46で付勢手段51、52の外脱が阻止されている。そして、該付勢手段51、52により前記雌型係止部材41、42を常時挿入側方向へ付勢している。   Further, the case plates 37 and 38 are formed with biasing means storage chambers 49 and 50 at the rear portions of the female locking members 41 and 42, respectively, and the storage chambers 49 and 50 are the same as in the first embodiment. The urging means 51 and 52 are accommodated. The back spacers 33 and 34 and the front spacers 45 and 46 prevent the biasing means 51 and 52 from coming off. The urging means 51 and 52 always urge the female locking members 41 and 42 in the insertion side direction.

前記一対の表スペーサ35、36の表面側には、これらの間にわたる1枚の表カバー53が配置されている。該表カバー53には、前記案内長孔47、48と同一位置において、かつ、同一方向に傾斜する一対の案内長孔54、55が形成されている。該一対の案内長孔54、55は表カバー53の表裏方向に貫通している。   On the surface side of the pair of front spacers 35, 36, a single front cover 53 is disposed between them. The front cover 53 is formed with a pair of guide long holes 54 and 55 that are inclined at the same position and in the same direction as the guide long holes 47 and 48. The pair of guide long holes 54 and 55 penetrates the front cover 53 in the front and back direction.

裏カバー32、裏スペーサ33、34、ケース板37、38、表スペーサ45、46及び、表カバー53によりケーシング56が形成されている。   A casing 56 is formed by the back cover 32, the back spacers 33 and 34, the case plates 37 and 38, the front spacers 45 and 46, and the front cover 53.

また、収納室36は、裏カバー32、裏スペーサ33、34、ケース板37、38、表スペーサ45、46及び、表カバー53により形成された空間であり、雄型係止部材35の挿入側の開口部は、挿入口36bを形成している。また、裏カバー32、裏スペーサ33、34、テーパ面39、40によりテーパ穴36aが形成されている。   The storage chamber 36 is a space formed by the back cover 32, the back spacers 33 and 34, the case plates 37 and 38, the front spacers 45 and 46, and the front cover 53, on the insertion side of the male locking member 35. The opening forms an insertion port 36b. Further, a taper hole 36 a is formed by the back cover 32, the back spacers 33 and 34, and the tapered surfaces 39 and 40.

前記表カバー53の表面側には、抜き治具57が前後方向に摺動可能に配置されている。   On the surface side of the front cover 53, a punching jig 57 is disposed so as to be slidable in the front-rear direction.

前記抜き治具57は、後部に幅の広い係止部58を有する金属の平板で形成され、該係止部58に前端係止面58aと後端係止面58bが形成されている。更に、該抜き治具57の裏側には、前記両案内ピン43、44が夫々嵌合する凹部59、60が形成されている。該凹部59、60の前後方向長は案内ピン43、54の前後方向長と略同長に形成され、左右方向長は案内ピン43、54の左右方向長よりも長く形成されている。更に、抜き治具57の表面には、係止部58の左右幅より短い幅の操作部61が一体に突設されている。   The extraction jig 57 is formed of a metal flat plate having a wide locking portion 58 at the rear, and a front end locking surface 58 a and a rear end locking surface 58 b are formed on the locking portion 58. Further, on the back side of the extraction jig 57, recesses 59 and 60 into which the guide pins 43 and 44 are respectively fitted are formed. The front and rear lengths of the recesses 59 and 60 are substantially the same as the front and rear lengths of the guide pins 43 and 54, and the left and right lengths are longer than the left and right lengths of the guide pins 43 and 54. Further, an operation portion 61 having a width shorter than the left and right widths of the locking portion 58 is integrally projected on the surface of the extraction jig 57.

前記抜き治具57の表側にはカバー62が配置されている。
該表カバー62の裏側には裏面が開口する案内凹部63が形成されており、該案内凹部63内に前記抜き治具57が前後方向に移動可能に嵌合される。更に、該案内凹部63の前端は前記抜き治具57の前端係止面58aが当たる前端規制面63aとなっており、後端は抜き治具57の後端係止面58bが当たる後端規制面63bになっている。更に、カバー62の中央部には前記操作部61が前後方向に移動可能に嵌合する窓64が形成されている。
A cover 62 is disposed on the front side of the extraction jig 57.
A guide recess 63 having an open rear surface is formed on the back side of the front cover 62, and the extraction jig 57 is fitted in the guide recess 63 so as to be movable in the front-rear direction. Further, the front end of the guide recess 63 is a front end regulating surface 63a against which the front end locking surface 58a of the extraction jig 57 abuts, and the rear end is a rear end regulation against which the rear end locking surface 58b abuts against the extraction jig 57. It is the surface 63b. Furthermore, a window 64 is formed in the center of the cover 62 so that the operation unit 61 can be moved in the front-rear direction.

前記案内ピン43、44、案内長孔47、48、抜き治具57、操作部61などにより解除手段65を形成している。   A release means 65 is formed by the guide pins 43 and 44, the guide long holes 47 and 48, the extraction jig 57, the operation portion 61, and the like.

前記各部材には共通する位置に取付用穴66が形成され、該各取付用穴66にビス67などの連結部材を挿通して各部材を一体的に連結し、雌型連結部材31を構成している。   A mounting hole 66 is formed at a common position in each member, and a connecting member such as a screw 67 is inserted into each mounting hole 66 to integrally connect each member, thereby forming a female connecting member 31. is doing.

雄型係止部材35は、前記実施例1の雄型係止部材20の雄ねじ体(雄型係止部材)24と同様の構造を有し、前記実施例1と同様ののこぎり刃状で、かつ、螺旋状に形成された雄ねじが刻設されている。またねじピッチPについても同様に設定する。   The male locking member 35 has the same structure as the male screw body (male locking member) 24 of the male locking member 20 of the first embodiment, and has a saw blade shape similar to that of the first embodiment. A male screw formed in a spiral shape is engraved. The screw pitch P is set in the same manner.

前記雌型連結部材31は、例えば、図9に示すような一方のパネル71の連結側端面71aに雌型連結部材31の収納室36の挿入側端が位置するように一方のパネル71に適宜手段で固定して備え、また、雄型係止部材35は、その先部が、例えば図9に示すような他方のパネル72の連結側端面72aより突出させて適宜手段により他方のパネル72に固定して備えられている。   For example, the female connection member 31 is appropriately attached to one panel 71 such that the insertion side end of the storage chamber 36 of the female connection member 31 is positioned on the connection side end surface 71a of one panel 71 as shown in FIG. The male locking member 35 is fixed to the other panel 72 by an appropriate means so that the tip of the male locking member 35 protrudes from the connecting side end surface 72a of the other panel 72 as shown in FIG. It is fixedly provided.

前記雌型連結部材31と雄型係止部材35の連結方法は、雄型係止部材35を雌型連結部材31の収納室36内へ挿入することにより、前記実施例1と同様に、雌型係止部材41、42の雌ねじ41a、42aが雄型係止部材35の雄ねじ35aに噛合して連結される。   The female connection member 31 and the male locking member 35 are connected by inserting the male locking member 35 into the storage chamber 36 of the female connection member 31, as in the first embodiment. The female screws 41 a and 42 a of the mold locking members 41 and 42 are engaged with and connected to the male screw 35 a of the male locking member 35.

次に、前記の連結状態から両パネル71、72を分離する場合には、カバー62に露出した操作部61の先端を手操作で後方へ移動させて雌型係止部材41、42を後方へ移動させる。これにより、雌型係止部材41、42が案内長孔47、48により外側へ移動し、雌型係止部材41、42で形成される雌ねじ穴が拡径するため、雄型係止部材35を抜き外すことができ、この雄型係止部材35を抜き外すことにより両パネル71、72を分離することができる。   Next, when separating both the panels 71 and 72 from the connected state, the distal end of the operation portion 61 exposed to the cover 62 is moved rearward by manual operation to move the female locking members 41 and 42 rearward. Move. As a result, the female locking members 41, 42 are moved outward by the guide elongated holes 47, 48, and the female screw holes formed by the female locking members 41, 42 are expanded, so that the male locking member 35 The panels 71 and 72 can be separated by removing the male locking member 35.

また、本実施例2においても、雄ねじ35aと雌ねじ41aを前記実施例1と同様な、のこぎり刃状に形成したので、前記実施例1と同様の効果を奏する。   Also in the second embodiment, since the male screw 35a and the female screw 41a are formed in the same saw blade shape as in the first embodiment, the same effects as in the first embodiment are obtained.

更に、本実施例2においては、雄型係止部材35を挿入する挿入口36bから見て長方形の偏平状に形成された雌型連結部材31において、その長手方向に対向して雌型係止部材41、42を2個のみ設けたので、実施例1の図2に示すような、周方向全体に雌型係止部材を配置したものに比べて、雌型係止部材を板状に薄く形成して、薄型の雌型連結部材に本発明を適用することができる。更に、雌型係止部材41、42の(図10の上下方向の)厚みは、雄型係止部材35の外径よりも小さく設定することで、雌型連結部材31の厚みをより薄くすることができ、厚みの薄い連結部材(例えば、シールドセグメント、パネル等)相互の連結に特に有効である。   Furthermore, in the second embodiment, the female coupling member 31 formed in a rectangular flat shape as viewed from the insertion port 36b into which the male locking member 35 is inserted is opposed to the longitudinal direction of the female coupling member 31. Since only two members 41 and 42 are provided, the female locking member is made thinner in a plate shape as compared with the case where the female locking member is disposed in the entire circumferential direction as shown in FIG. The present invention can be applied to a thin female connecting member. Furthermore, by setting the thickness of the female locking members 41 and 42 (in the vertical direction in FIG. 10) to be smaller than the outer diameter of the male locking member 35, the thickness of the female coupling member 31 is made thinner. This is particularly effective for connecting thin connecting members (for example, shield segments, panels, etc.) to each other.

更に、部品のほとんどを平板で形成できるため、プレスや鍛造で部品を製造でき、製造コストの低減を図ることができる。   Furthermore, since most of the components can be formed of flat plates, the components can be manufactured by pressing or forging, and the manufacturing cost can be reduced.

本発明の実施例1を示すもので、雄型連結部材と雌型連結部材を分離した側断面図。The side sectional view which separated Example 1 and the female type | mold connection member which shows Example 1 of this invention. 図1におけるP−P線断面図。The PP sectional view taken on the line in FIG. 図1の雄型連結部材と雌型連結部材を連結した側断面図1 is a sectional side view of the male connecting member and the female connecting member in FIG. 図1の雄型連結部材と雌型連結部材をシールドセグメントに設けた実施例を示す図。The figure which shows the Example which provided the male type | mold connection member and the female type | mold connection member of FIG. 1 in the shield segment. 本発明の雄ねじ体と楔ナットを示す図。The figure which shows the external thread body and wedge nut of this invention. 図5の雄ねじ体と楔ナットとの噛合を説明する図。The figure explaining meshing | engagement of the external thread body and wedge nut of FIG. 図6の噛合状態を示す図。The figure which shows the meshing state of FIG. 本発明の雄ねじと雌ねじを示す断面図。Sectional drawing which shows the external thread and internal thread of this invention. 本発明の実施例2を示す斜視図。The perspective view which shows Example 2 of this invention. 図9における雌型連結部材の正面図。The front view of the female type | mold connection member in FIG. 図9におけるQ−Q線断面図。The QQ sectional view taken on the line in FIG. 図9における部品を分離した斜視図。The perspective view which isolate | separated the components in FIG. 従来の連結具を示す側断面図。The sectional side view which shows the conventional connector. 従来の雄ねじと雌ねじを示す側断面図。The side sectional view showing the conventional external thread and internal thread. 図13の連結具の連結状態を示す側断面図。FIG. 14 is a side sectional view showing a connected state of the connector of FIG. 13. 本発明を説明するための仮想の雄ねじと雌ねじを示す図。The figure which shows the virtual male screw and female screw for demonstrating this invention. 図16のねじの噛合状態を示す図。The figure which shows the meshing state of the screw of FIG.

符号の説明Explanation of symbols

1、31 雌型連結部材
2、56 ケーシング
3、36 収納室
4、36a テーパ穴
7、36b 挿入口
9、41、42 型係止部材である楔ナット
10、41b、42b テーパ面
11、41a、42a 雌ねじ
15、51、52 付勢手段
17、27、71、72 シールドセグメント
20 雄型連結部材
24、35 型係止部材である雄ねじ体
P ねじピッチ

DESCRIPTION OF SYMBOLS 1,31 Female type | mold connection member 2,56 Casing 3,36 Storage chamber 4,36a Tapered hole 7,36b Insertion port 9,41,42 Wedge nut 10,41b, 42b Tapered surface 11,41a which is a female type locking member 42a Female thread 15, 51, 52 Biasing means 17, 27, 71, 72 Shield segment 20 Male connecting member 24, 35 Male thread body P which is a male locking member P Thread pitch

Claims (7)

ケーシング内に先方が開口する収納室を設け、該収納室に、先方が縮径するテーパ面を有するテーパ穴を形成し、該テーパ穴内に、周方向に複数に分割された楔状の雌型係止部材を軸方向に摺動可能に配置するとともに該雌型係止部材の内面に雌ねじを刻設し、該雌型係止部材を付勢手段で先方へ付勢した雌型連結部材と、外周に雄ねじを形成した雄型係止部材を先部に突設した雄型連結部材とからなり、前記雄型係止部材を前記雌型連結部材に開口した挿入口から挿入することにより、前記各雌型係止部材が拡径し、雄型係止部材の挿入停止により雌型係止部材の雌ねじが雄型係止部材の雄ねじに噛合するようにした連結具であって、
前記雄ねじを、のこぎり刃状で、螺旋状に形成し、前記各雌ねじを、のこぎり刃状で、螺旋の一部で形成し、
前記各雌型係止部材が、最も挿入口側に位置した状態において、前記一の雌型係止部材の雌ねじの螺旋と、他の雌型係止部材の雌ねじの螺旋とが一致しないようにした
ことを特徴とする連結具。
A housing chamber having an opening at the tip is provided in the casing, a tapered hole having a tapered surface whose diameter is reduced at the tip is formed in the housing chamber, and a wedge-shaped female engagement member divided into a plurality of circumferential directions in the taper hole A female connecting member in which a stopper member is slidably disposed in the axial direction and a female screw is engraved on the inner surface of the female locking member, and the female locking member is biased forward by a biasing means; A male locking member having a male screw formed on the outer periphery thereof, and a male coupling member projecting from the tip, and inserting the male locking member from an insertion opening opened in the female coupling member, Each of the female locking members has a diameter expanded, and a coupling tool in which the female screw of the female locking member meshes with the male screw of the male locking member by stopping the insertion of the male locking member,
The male screw is formed in a spiral shape with a saw blade, each female screw is formed in a saw blade shape and a part of a spiral,
In a state where each female locking member is located closest to the insertion port, the spiral of the female screw of the one female locking member does not coincide with the spiral of the female screw of the other female locking member. coupling characterized in that the <br/>.
前記雌型係止部材の雌ねじの軸方向断面形状は、前記雄型係止部を挿入する挿入口側から奥部側に向って縮径する雌側傾斜面と、雌型係止部材の軸方向と直交して、該雌側傾斜面の内径端から外側に向って垂直に形成した雌側垂直面とで構成されるのこぎり刃状に形成され、
前記雄型係止部材の雄ねじの軸方向断面形状は、先端側から後側に向って拡径する雄側傾斜面と、雄型係止部材の軸方向と直交して、該雄側傾斜面の外径端から内側に向って垂直に形成した雄側垂直面とで構成されるのこぎり刃状に形成されていることを特徴とする請求項記載の連結具。
The axial cross-sectional shape of the female thread of the female locking member includes a female inclined surface that is reduced in diameter from the insertion port side into which the male locking portion is inserted toward the back side, and the axis of the female locking member. Orthogonal to the direction, formed in a saw blade shape composed of a female side vertical surface formed vertically from the inner diameter end of the female side inclined surface toward the outside,
The male cross-sectional shape of the male locking member in the axial direction is a male inclined surface that expands from the front end to the rear, and the male inclined surface is orthogonal to the axial direction of the male locking member. 2. The coupling tool according to claim 1 , wherein the coupling tool is formed in a saw blade shape including a male-side vertical surface formed vertically from an outer diameter end of the male side.
前記雌ねじと、前記雄ねじにおける呼び径に対するねじピッチを、JISに規定する細目ねじの呼び径に対するねじピッチよりも小さく設定した請求項1又は記載の連結具。 The coupling tool according to claim 1 or 2 , wherein a screw pitch with respect to a nominal diameter of the female screw and the male screw is set to be smaller than a screw pitch with respect to a nominal diameter of a fine screw defined in JIS. 前記雌型連結部材における前記雌型係止部材を2個対向して設けたことを特徴とする請求項1乃至のいずれかに記載の連結具。 The connector according to any one of claims 1 to 3 , wherein two female locking members in the female connecting member are provided to face each other. 前記雌型連結部材における前記雌型係止部材の厚みを、前記雄型係止部材の外径よりも小さくしたことを特徴とする請求項記載の連結具。 The connector according to claim 4 , wherein a thickness of the female locking member in the female connecting member is smaller than an outer diameter of the male locking member. ケーシング内に先方が開口する収納室を設け、該収納室に、先方が縮径するテーパ面を有するテーパ穴を形成し、該テーパ穴内に、周方向に複数に分割された楔状の雌型係止部材を軸方向に摺動可能に配置するとともに該雌型係止部材の内面に雌ねじを刻設し、該雌型係止部材を付勢手段で先方へ付勢した雌型連結部材と、外周に雄ねじを形成した雄型係止部材を先部に突設した雄型連結部材とからなり、前記雄型係止部材を前記雌型連結部材に開口した挿入口から挿入することにより、前記各雌型係止部材が拡径し、雄型係止部材の挿入停止により雌型係止部材の雌ねじが雄型係止部材の雄ねじに噛合するようにした連結具を使用したコンクリート部材の連結装置であって、
前記雄ねじを、のこぎり刃状で、螺旋状に形成し、前記各雌ねじを、のこぎり刃状で、螺旋の一部で形成し、
前記各雌型係止部材が、最も挿入口側に位置した状態において、前記一の雌型係止部材の雌ねじの螺旋と、他の雌型係止部材の雌ねじの螺旋とが一致しないようにし、
前記雌型連結部材を、連結すべき一方のコンクリート部材に固設し、前記雄型連結部材を、連結すべき他方のコンクリート部材に固設したことを特徴とするコンクリート部材の連結装置
A housing chamber having an opening at the tip is provided in the casing, a tapered hole having a tapered surface whose diameter is reduced at the tip is formed in the housing chamber, and a wedge-shaped female engagement member divided into a plurality of circumferential directions in the taper hole A female connecting member in which a stopper member is slidably disposed in the axial direction and a female screw is engraved on the inner surface of the female locking member, and the female locking member is biased forward by a biasing means; A male locking member having a male screw formed on the outer periphery thereof, and a male coupling member projecting from the tip, and inserting the male locking member from an insertion opening opened in the female coupling member, Connection of concrete members using a connecting tool in which each female locking member is expanded in diameter and the female screw of the female locking member meshes with the male screw of the male locking member by stopping insertion of the male locking member A device ,
The male screw is formed in a spiral shape with a saw blade, each female screw is formed in a saw blade shape and a part of a spiral,
In a state where each of the female locking members is located closest to the insertion port, the spiral of the female screw of the one female locking member and the spiral of the female screw of the other female locking member do not coincide with each other. ,
A connecting apparatus for a concrete member, wherein the female connecting member is fixed to one concrete member to be connected, and the male connecting member is fixed to the other concrete member to be connected .
前記コンクリート部材が、シールドセグメントであることを特徴とする請求項6記載のコンクリート部材の連結装置。The concrete member connecting device according to claim 6, wherein the concrete member is a shield segment.
JP2004373034A 2004-10-18 2004-12-24 Connecting device and connecting device for concrete member using the same Active JP4469714B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004373034A JP4469714B2 (en) 2004-10-18 2004-12-24 Connecting device and connecting device for concrete member using the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004302908 2004-10-18
JP2004373034A JP4469714B2 (en) 2004-10-18 2004-12-24 Connecting device and connecting device for concrete member using the same

Publications (2)

Publication Number Publication Date
JP2006145023A JP2006145023A (en) 2006-06-08
JP4469714B2 true JP4469714B2 (en) 2010-05-26

Family

ID=36624934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004373034A Active JP4469714B2 (en) 2004-10-18 2004-12-24 Connecting device and connecting device for concrete member using the same

Country Status (1)

Country Link
JP (1) JP4469714B2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4814059B2 (en) * 2006-11-08 2011-11-09 株式会社三ツ知 CONNECTING DEVICE AND CONCRETE MEMBER CONNECTING DEVICE USING THE SAME
JP5197281B2 (en) * 2008-10-02 2013-05-15 株式会社三ツ知 Connector
JP6047824B2 (en) * 2012-08-13 2016-12-21 ダイソン テクノロジー リミテッド Vacuum cleaner head
JP6587926B2 (en) * 2015-12-19 2019-10-09 株式会社Seto Anchor bolt and anchor bolt installation method
WO2019192550A1 (en) * 2018-04-07 2019-10-10 玉环胜友工具有限公司 Olive-shaped bidirectional tapered external thread and conventional thread connection structure having large left taper and small right taper
US11220868B2 (en) * 2018-06-13 2022-01-11 Schlumberger Technology Corporation Split threads for fixing accessories to a body

Also Published As

Publication number Publication date
JP2006145023A (en) 2006-06-08

Similar Documents

Publication Publication Date Title
US11092267B2 (en) Fitting, ferrule, and ferrule manufacturing method
JP4084699B2 (en) Connecting device
JP4469714B2 (en) Connecting device and connecting device for concrete member using the same
US9660407B2 (en) Crimp head quick-change structure of a crimping tool
JP2018534506A (en) Threaded bolt with separate screw spiral and different partial flank angles
US7255026B1 (en) One-way monkey wrench
JP4339305B2 (en) A connector and a connecting device for a concrete member using the same.
CN108856916A (en) Internal screw thread screw tap
JP2018112199A (en) Female type connection member
JP3750931B2 (en) CONNECTION TOOL AND CONCRETE MEMBER CONNECTION DEVICE USING THE SAME
JP2016061365A (en) Frame connector
JP4748821B2 (en) Connecting device for corner part of frame structure
JP3863170B2 (en) Concrete member connection device
DE102014014273A1 (en) A cooling pipe connection for engine cooling and an engine cooling device equipped with a cooling pipe connection
JP4718062B2 (en) nut
GB2039660A (en) Fastener inserts
KR101870317B1 (en) A expanding hexagonal wrench
JP2006144956A (en) Connector
KR101273638B1 (en) Motor separation function having improved reduction gear
JP2010043728A (en) Screw grommet
JP5908797B2 (en) CONNECTING DEVICE AND CONCRETE MEMBER CONNECTING DEVICE USING THE SAME
JP2005054814A (en) Connecting tool
JP5908798B2 (en) CONNECTING DEVICE AND CONCRETE MEMBER CONNECTING DEVICE USING THE SAME
JP6618742B2 (en) Blade fixing structure
JP2004144181A (en) Connecting tool and concrete member connecting device using the same

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070918

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090618

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090630

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090819

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100216

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100301

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130305

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130305

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20250305

Year of fee payment: 15

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350